CN212182443U - Battery module and electrical device having the same - Google Patents

Abstract

The application provides a battery module includes that pile up the electric core group that sets up or set up side by side, first electric connector and second electric connector by a plurality of electric cores. Each electricity core includes casing, insulating part and utmost point post, the casing with the material of utmost point post is conducting material, the insulating part is located the casing with between the utmost point post, the casing includes first terminal surface, back to the second terminal surface of first terminal surface with be located first terminal surface with side between the second terminal surface, the side includes a side plane, utmost point post is located on the side plane. The first electric connecting piece is electrically connected with the pole of each battery cell, part of the first electric connecting piece is exposed to the battery cell group, the second electric connecting piece is electrically connected with the shell of each battery cell, and part of the second electric connecting piece is exposed to the battery cell group. The battery module in this application has high battery capacity. The application also provides an electric device with the battery module.

Description

Battery module and electrical device having the same

technical field

The present application relates to the field of electrochemistry, and in particular, to a battery module and an electrical device having the battery module.

Background technique

With the continuous innovation of electronic technology, more and more electronic products are flooding into the market. At the same time, in order to become the mainstream of the market, these electronic products are gradually developing in the direction of being light and easy to carry. Therefore, in order to make electronic products conform to the design concept of small and portable shape, more stringent requirements are put forward for the design of batteries. . Button batteries are popular in various small electronic products due to their small size and easy size adjustment. However, due to the development trend of multi-functional integration of electronic products, higher-capacity batteries are required to support the operation of electronic products, and button batteries cannot meet the capacity requirements.

Utility model content

In view of this, it is necessary to provide a battery module to solve the above problems.

The application provides a battery module, including:

A cell group consisting of a plurality of cells stacked or arranged side by side, each of the cells includes a housing, an insulating member and a pole, the housing and the pole are made of conductive materials, and the insulating member between the housing and the pole, the housing includes a first end surface, a second end surface facing away from the first end surface, and a side surface between the first end surface and the second end surface , the side surface includes a side plane, and the pole post is located on the side plane;

a first electrical connector electrically connecting the poles of each of the battery cells, and a part of the first electrical connector is exposed to the battery pack; and

A second electrical connector is electrically connected to the housing of each of the battery cells, and a part of the second electrical connector is exposed to the battery pack, wherein the electrical leads drawn from the second electrical connector The polarity of the core is different from the polarity of the electric core drawn from the first electrical connector.

Optionally, the cell group includes a first surface, a second surface facing away from the first surface, and a peripheral surface connected between the first surface and the second surface;

Wherein, the plurality of cells are stacked and arranged, wherein the second end face of one cell is opposite to the first end face or the second end face of the cell adjacent to it, and the sides of each cell are aligned to form the peripheral surface;

Alternatively, the plurality of battery cells are arranged side by side, the side surfaces of each of the battery cells are arranged side by side, and some of the side surfaces in each of the battery cells together constitute the peripheral surface.

Optionally, each of the battery cells further includes an electrode assembly, the electrode assembly is accommodated in the housing, and the electrode assembly includes a first pole piece and a second pole with a different polarity from the first pole piece. The first pole piece and the second pole piece are laminated or rolled to form the electrode assembly, the shell is electrically connected to the first pole piece, and the pole post is electrically connected to the second pole piece. pole piece.

Optionally, the first electrical connector includes a first cell connection end and a first external device connection end, the first cell connection end is connected to a pole on each of the cells, and the first cell connection end is connected to a pole on each cell. The external device connection end is connected to the first battery cell connection end and is exposed to the battery cell group; the second electrical connection piece includes a second battery cell connection end and a second external device connection end, the second electric cell connection end The core connection end is connected to the housing of each of the battery cells; the second external device connection end is connected to the second battery cell connection end and is exposed to the battery cell group.

Optionally, the battery module further includes a protection body, the protection body covers the peripheral surface, the first surface and the second surface, the first cell connection end and the second The cell connecting end is located in the protective body, the first external device connecting end and the second external device connecting end are exposed to the protective body, wherein the protective body is formed by an injection molding process.

Optionally, the battery module further includes a packaging film covering the peripheral surface, wherein the first cell connection end and/or the second cell connection end are located in the packaging within the membrane.

Optionally, the battery module further includes a first insulating member and a second insulating member, the first insulating member is disposed on the first surface, and the second insulating member is disposed on the second surface;

Wherein, the first external device connection end and the second external device connection end are exposed to the first insulating member or the second insulating member;

Alternatively, the first external device connecting end is exposed to the first insulating member, and the second external device connecting end is exposed to the second insulating member.

Optionally, the first insulating member includes a first insulating portion and a second insulating portion connected to the first insulating portion, the first insulating portion is disposed on the first surface, and the second insulating portion is connected to the first insulating portion. between the peripheral surface and the first cell connecting end, wherein the pole on each cell is exposed to the surface of the second insulating portion facing the first cell connecting end, and is connected to the first cell connection end.

Optionally, the battery module further includes an external component, and the external component is respectively connected to the first external device connection end and the second external device connection end.

Optionally, the external components include one or more of elastic sheets, terminal wires and flexible circuit boards.

Optionally, the first electrical connection member is a conductive sheet, and the second electrical connection member is a conductive sheet.

Optionally, the battery cell group further includes a third insulating member, and the third insulating member connects two adjacently arranged battery cells.

The present application also provides an electrical device including the above-mentioned battery module.

In the present application, the plurality of cells stacked or arranged side by side in the cell group are electrically connected by means of the first electrical connector and the second electrical connector, so that the plurality of electrical cells are The cores are connected in parallel, thereby increasing the capacity of the entire battery module, thereby improving the battery life of the electrical device.

Description of drawings

FIG. 1 is a schematic structural diagram of a battery module according to an embodiment of the present application.

FIG. 2 is an exploded schematic view of the battery module shown in FIG. 1 .

FIG. 3 is an exploded schematic view of the cell group shown in FIG. 2 .

FIG. 4 is a schematic structural diagram of a battery module according to another embodiment of the present application.

FIG. 5 is an exploded schematic view of the battery module shown in FIG. 4 .

FIG. 6 is an exploded schematic view of the cell group shown in FIG. 5 .

FIG. 7 is a partial structural schematic diagram of an electrode assembly according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a battery module according to another embodiment of the present application.

FIG. 9 is an exploded schematic view of the battery module shown in FIG. 8 .

FIG. 10 is a schematic structural diagram of a battery module according to another embodiment of the present application.

FIG. 11 is an exploded schematic view of the battery module shown in FIG. 10 .

FIG. 12 is a schematic structural diagram of a battery module according to another embodiment of the present application.

FIG. 13 is an exploded schematic view of the battery module shown in FIG. 12 .

FIG. 14 is a schematic block diagram of an electrical device according to an embodiment of the present application.

Description of main component symbols

battery module 100

Cell pack 10

first surface 101

second surface 102

Perimeter 103

Cell 11

Housing 111

first end face 1111

Second end face 1112

Side 1113

side plane 1114

Electrode assembly 112

first pole piece 1121

Second pole piece 1122

Separator 1123

pole 113

third insulation 12

first filling section 121

second filling section 122

Vacancies 13

first electrical connector 20

The first cell connection terminal 201

The first external device connection terminal 202

second electrical connector 30

The second cell connection terminal 301

The second external device connection terminal 302

Adapter 40

Packaging Film 50

first insulator 60

first insulating part 601

second insulating part 602

Through hole 6021

Second insulation 70

External accessories 80

Shrapnel 801

Terminal wire 802

Flexible circuit board 803

Electrical device 200

The following specific embodiments will further illustrate the present application in conjunction with the above drawings.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are for the purpose of describing specific embodiments only, and are not intended to limit the application.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and features in the embodiments may be combined with each other without conflict.

Referring to FIG. 1 and FIG. 4 , an embodiment of the present application discloses a battery module 100 . The battery module 100 can be applied to the electrical device 200 (refer to FIG. 14 ).

Referring to FIGS. 1 to 6 , the battery module 100 includes a battery cell group 10 , a first electrical connector 20 and a second electrical connector 30 , which are stacked or arranged side by side with a plurality of battery cells 11 . Each of the cells 11 includes a casing 111 , an insulating member (not shown) and a pole 113 . The material of the casing 111 and the pole 113 is a conductive material. The insulating member (not shown) is located between the casing 111 and the pole 113 , so as to electrically insulate the pole 113 and the casing 111 . The housing 111 includes a first end surface 1111 , a second end surface 1112 facing away from the first end surface 1111 , and a side surface 1113 connected between the first end surface 1111 and the second end surface 1112 . The side surface 1113 includes a side plane 1114 . The pole 113 is located on the side plane 1114 . The first electrical connector 20 is electrically connected to the pole 113 of each of the cells 11 , and a part of the first electrical connector 20 is exposed to the battery pack 10 . The second electrical connector 30 is electrically connected to the housing 111 of each of the cells 11 , and a part of the second electrical connector 30 is exposed to the battery pack 10 . Wherein, the polarity of the battery cells 11 drawn from the second electrical connector 30 is different from the polarity of the battery cells 11 drawn from the first electrical connector 20 .

In one embodiment, the conductive material may be steel alloy, aluminum alloy, iron alloy, copper alloy, nickel alloy, or stainless steel.

In this application, the first electrical connector 20 and the second electrical connector 30 are used to electrically connect the plurality of cells 11 stacked or side by side in the cell group 10 , so that all the cells 11 are electrically connected. The plurality of battery cells 11 are connected in parallel, thereby increasing the capacity of the entire battery module 100 , thereby improving the battery life of the electrical device 200 .

Referring to FIGS. 3 and 6 , the battery pack 10 includes a first surface 101 , a second surface 102 facing away from the first surface 101 and connected between the first surface 101 and the second surface 102 The peripheral surface 103.

In one embodiment, referring to FIG. 3 , the plurality of battery cells 11 are stacked. In this way, the second end face 1112 of one cell 11 is disposed opposite to the second end face 1112 or the first end face 1111 of the adjacent cell 11 . The side surfaces 1113 of each of the cells 11 are aligned to form the peripheral surface 103 . The first surface 101 is the second end surface 1112 or the first end surface 1111 of the topmost cell 11 in the cell group 10 , and the second surface 102 is the bottommost cell in the cell group 10 . The second end face 1112 or the first end face 1111 of the battery cell 11 .

In another embodiment, referring to FIG. 6 , the plurality of battery cells 11 are arranged side by side. In this way, the first end faces 1111 of each of the cells 11 are aligned on the same horizontal plane to form the first surface 101 ; the second end faces 1112 of each of the cells 11 are aligned on the same horizontal plane to form the first face 101 . The second surface 102 is described. The side surfaces 1113 of each of the battery cells 11 are arranged side by side, and some of the side surfaces 1113 in each of the battery cells 11 together constitute the peripheral surface 103 .

3 and 7 , each of the battery cells 11 further includes an electrode assembly 112 . Further, each of the battery cells 11 further includes an electrolyte (not shown). The electrolyte is accommodated in the casing 111 .

Referring to FIG. 3 and FIG. 7 , the electrode assembly 112 is accommodated in the casing 111 . The electrode assembly 112 includes a first pole piece 1121 and the second pole piece 1122 having a different polarity from the first pole piece 1121 . The first pole piece 1121 and the second pole piece 1122 are laminated or rolled to form the electrode assembly 112 . The casing 111 is electrically connected to the first pole piece 1121 , and the pole post 113 is electrically connected to the second pole piece 1122 . Further, the electrode assembly 112 may further include a separator 1123 . The isolation film 1123 is disposed between the first pole piece 1121 and the second pole piece 1122 .

In this application, the casing 111 is made of conductive material and is electrically connected to the first pole piece 1121 in the electrode assembly 112 . In this way, the surface of the casing 111 can be used as an electrical connection terminal of the battery cell 11 . , so that the polarity of the first pole piece 1121 in the electrode assembly 112 is drawn out through the casing 111 .

2 and 3 , the first electrical connector 20 includes a first cell connection end 201 and a first external device connection end 202 . The first cell connecting end 201 is connected to the pole 113 on each of the cells 11 . The first external device connection end 202 is connected to the first cell connection end 201 and is exposed to the battery cell group 10 . Wherein, the first electrical connector 20 may be a conductive sheet.

2 and 3 , the second electrical connector 30 includes a second cell connection end 301 and a second external device connection end 302 . The second cell connecting end 301 is connected to the casing 111 of each of the cells 11 . The second external device connection end 302 is connected to the second cell connection end 301 and is exposed to the battery cell group 10 . Wherein, the second electrical connector 30 may be a conductive sheet.

In one embodiment, the battery module 100 further includes a packaging film 50 . The packaging film 50 covers the peripheral surface 103 . Wherein, the first cell connection end 201 and/or the second cell connection end 301 are located in the packaging film 50 .

Further, the battery module 100 further includes a first insulating member 60 and a second insulating member 70 . The first insulating member 60 is disposed on the first surface 101 , and the second insulating member 70 is disposed on the second surface 102 . Wherein, the first external device connecting end 202 and the second external device connecting end 302 are exposed to the first insulating member 60 or the second insulating member 70; or, the first external device connecting end 202 Exposed to the first insulating member 60 , and the second external device connecting end 302 is exposed to the second insulating member 70 .

In another embodiment, the battery module 100 includes a protection body (not shown). The protective body covers the peripheral surface 103 , the first surface 101 and the second surface 102 . The first cell connection end 201 and the second cell connection end 301 are located in the protection body. The first external device connection end 202 and the second external device connection end 302 are exposed to the protective body to assist the battery module 100 to be electrically connected to external components (not shown). In this way, the protector can be used to replace the packaging film 50 , the first insulating member 60 and the second insulating member 70 described above. Wherein, the protective body can be formed by an injection molding process.

Referring to FIGS. 1 and 2 , the battery module 100 further includes an external component 80 . The external components 80 are respectively connected to the first external device connection end 202 and the second external device connection end 302 for electrically connecting the battery module 100 with external components (not shown). In other embodiments, the external member 80 may be omitted. In this way, the battery module 100 can be electrically connected to external elements through the first external device connection end 202 and the second external device connection end 302 .

Wherein, the external component 80 includes one or more of elastic pieces 801 , terminal wires 802 and flexible circuit boards 803 .

Referring to FIG. 2 , the cell group 10 further includes a third insulating member 12 . The third insulating member 12 connects the two adjacent battery cells 11 to achieve electrical insulation between the battery cells 11 .

Hereinafter, the battery module 100 of the present application will be specifically described through embodiments.

Example 1

1 , 2 and 3 , a battery module 100 includes a cell pack 10 , a first electrical connector 20 , a second electrical connector 30 , a packaging film 50 , a first insulator 60 , and a second insulator 70 and external components 80.

Referring to FIG. 2 and FIG. 3 , the battery cell group 10 includes two stacked battery cells 11 and a third insulating member 12 . In other embodiments, the number of the battery cells 11 in the battery cell group 10 may be adaptively adjusted according to actual needs, and may be three, four, five, and the like.

Referring to FIG. 2 , the cell group 10 includes a first surface 101 , a second surface 102 facing away from the first surface 101 , and a side surface 1113 connected between the first surface and the second surface 102 .

In Embodiment 1, each of the battery cells 11 is cylindrical. In other embodiments, the structure of the battery cell 11 can be adaptively adjusted according to actual needs, and can be a regular shape such as a cuboid or other irregular shapes.

Referring to FIGS. 2 , 3 and 7 , each of the battery cells 11 includes a casing 111 , an electrode assembly 112 , a pole 113 and an insulating member (not shown). Wherein, the material of the casing 111 and the pole 1113 is a conductive material. The insulating member (not shown) is located between the casing 111 and the pole 113 to electrically insulate the casing 111 and the pole 113 .

3 , the housing 111 includes a first end surface 1111 , a second end surface 1112 facing away from the first end surface 1111 , and a side surface 1113 connected between the first end surface 1111 and the second end surface 1112 . The side surface 1113 includes a side plane 1114 . The pole 113 is located on the side plane 1114 .

Referring to FIG. 3 , in Embodiment 1, the second end face 1112 of one cell 11 and the second end face 1112 of the other cell 11 are disposed opposite to each other. The side surfaces 1113 of the two battery cells 11 are aligned to form the peripheral surface 103 . The first surface 101 is the first end surface 1111 of the cell 11 located at the top of the cell group 10 , and the second surface 102 is the first end surface 1111 of the cell 11 located at the bottom end of the cell group 10 . The casing 111 is a metal casing.

Referring to FIG. 3 and FIG. 7 , the electrode assembly 112 is accommodated in the casing 111 . The electrode assembly 112 includes a first pole piece 1121 , a separator 1123 and the second pole piece 1122 having a different polarity from the first pole piece 1121 . The first pole piece 1121 , the separator 1123 and the second pole piece 1122 are wound to form the electrode assembly 112 . The casing 111 is electrically connected to the first pole piece 1121 . The pole 113 is electrically connected to the second pole piece 1122 .

Referring to FIG. 2 , the third insulating member 12 is connected between the two battery cells 11 . In Embodiment 1, the third insulating member 12 is DuPont paper with double-sided tape. In this way, while the two battery cells 11 are connected by the third insulating member 12 , electrical insulation between the two battery cells 11 is also ensured.

2 and 3 , the first electrical connector 20 includes a first cell connection end 201 and a first external device connection end 202 . The first cell connecting end 201 is connected to the pole 113 on each of the cells 11 . The first external device connection end 202 is connected to the first cell connection end 201 and is exposed to the first surface 101 . Wherein, the first electrical connector 20 is a conductive sheet. The conductive sheet may be a nickel sheet.

Referring to FIG. 2 , the first insulating member 60 includes a first insulating portion 601 and a second insulating portion 602 connected to the first insulating portion 601 .

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the first insulating portion 601 is disposed on the first surface 101 . The first external device connecting end 202 is exposed to the first insulating portion 601 .

Referring to FIGS. 2 and 3 , the second insulating portion 602 is connected between the peripheral surface 103 and the first cell connecting end 201 . Wherein, the second insulating portion 602 is provided with a through hole 6021 which is matched with the pole 113 on each of the battery cells 11 . The pole 113 on each of the cells 11 passes through the through hole 6021 and is exposed on the surface of the second insulating portion 602 facing the first cell connection end 201 , so that the pole 113 is electrically connected to the first cell connection end 201 .

Wherein, with the help of the design of the second insulating portion 602 , while ensuring the electrical connection between the first cell connection end 201 and the pole 113 , the first cell connection end 201 is connected to the housing. 111 is electrically insulated to avoid the short circuit problem of the battery module 100 .

Referring to FIG. 2 and FIG. 3 , the second insulating member 70 is disposed on the second surface 102 .

Referring to FIGS. 1 , 2 and 3 , the second electrical connector 30 includes a second cell connection end 301 and a second external device connection end 302 . The second cell connecting end 301 is connected to the side surface 1113 of each of the cells 11 . The second external device connection end 302 is connected to the second cell connection end 301 and is exposed to the first insulating portion 601 . Wherein, the second electrical connector 30 is a conductive sheet. The conductive sheet may be a nickel sheet.

1 , 2 and 3 , the packaging film 50 covers the peripheral surface 103 . The first cell connection end 201 and the second cell connection end 301 are located in the packaging film 50 . Wherein, the packaging film 50 may be a shrink film.

In Embodiment 1, referring to FIGS. 1 and 2 , the external member 80 includes two terminal wires 802 . The two terminal wires 802 are respectively electrically connected to the first external device connection end 202 and the second external device connection end 302 . Wherein, by means of the outgoing method of the two terminal wires 802, the degree of freedom of the connection between the battery module 100 and the host end (not shown) is ensured, and at the same time, it also solves the problem that the battery module 100 cannot be connected to the host end (not shown in the figure) due to insufficient welding space. shown) to realize the problem of electrical connection.

Example 2

The difference between Embodiment 2 and Embodiment 1 lies in the external component 80 .

8 and 9 , in Embodiment 2, the external component 80 includes two elastic pieces 801 , and the two elastic pieces 801 are respectively electrically connected to the first external device connection end 202 and the second external device connection end 302 . Wherein, the first electrical connector 20 and one of the elastic pieces 801 may be integrally formed, and the second electrical connector 30 and the other elastic piece 801 may be integrally formed.

Example 3

The difference between Embodiment 3 and Embodiment 1 lies in the external component 80 .

In Embodiment 3, referring to FIGS. 10 and 11 , the external component 80 includes a flexible circuit board 803 . The flexible circuit board 803 is electrically connected to the first external device connection end 202 and the second external device connection end 302 .

Further, referring to FIG. 11 , the battery module 100 further includes two adapters 40 . The flexible circuit board 803 and the first external device connecting end 202, and the flexible circuit board 803 and the second external device connecting end 302 are respectively connected through the two adapters 40, so as to improve the first external device connection. The reliability of the connection between an external device connecting end 202 and the second external device connecting end 302 and the flexible circuit board 803 . Wherein, the adapter 40 is a nickel sheet.

Among them, the battery module 100 in the present application has a variety of outgoing methods (ie, using elastic sheets 801, terminal wires 802 or flexible circuit boards 803) to facilitate electrical connection with the host (not shown).

Example 4

4 , 5 and 6 , a battery module 100 includes a cell pack 10 , a first electrical connector 20 , a second electrical connector 30 , a packaging film 50 , a first insulator 60 and a second insulator 70.

Referring to FIG. 5 and FIG. 6 , the battery cell group 10 includes two battery cells 11 and a third insulating member 12 arranged side by side. In other embodiments, the number of the battery cells 11 in the battery cell group 10 may be adaptively adjusted according to actual needs, and may be three, four, five, and the like.

Referring to FIG. 6 , the cell group 10 includes a first surface 101 , a second surface 102 facing away from the first surface 101 , and a side surface 1113 connected between the first surface and the second surface 102 .

5 , 6 and 7 , each of the cells 11 includes a casing 111 , an electrode assembly 112 , a pole 113 and an insulating member (not shown). Wherein, the material of the casing 111 and the pole 1113 is a conductive material. The insulating member (not shown) is located between the casing 111 and the pole 113 to electrically insulate the casing 111 and the pole 113 .

6 , the housing 111 includes a first end surface 1111 , a second end surface 1112 facing away from the first end surface 1111 , and a side surface 1113 connected between the first end surface 1111 and the second end surface 1112 . The side surface 1113 includes a side plane 1114 . The pole 113 is located on the side plane 1114 .

Referring to FIG. 6 , in Embodiment 4, the first end faces 1111 of the two battery cells 11 are aligned on the same horizontal plane to form the first surface 101 ; the second end faces 1112 of the two battery cells 11 are on the same horizontal plane Aligned to form the second surface 102 . The side surfaces 1113 of the two battery cells 11 are arranged side by side, and some of the side surfaces 1113 in each of the battery cells 11 together form the peripheral surface 103 . The casing 111 is a metal casing.

Referring to FIG. 6 and FIG. 7 , the electrode assembly 112 is accommodated in the casing 111 . The electrode assembly 112 includes a first pole piece 1121 , a separator 1123 and a second pole piece 1122 having a different polarity from the first pole piece 1121 . The first pole piece 1121 , the separator 1123 and the second pole piece 1122 are wound to form the electrode assembly 112 . The casing 111 is electrically connected to the first pole piece 1121 . The pole 113 is electrically connected to the second pole piece 1122 .

In Embodiment 2, referring to FIG. 6 , each of the battery cells 11 is cylindrical. Then, when the two battery cells 11 are arranged side by side, due to the cylindrical structure of the battery cells 11 , the two battery cells 11 together form two opposite vacancies 13 . In other embodiments, the structure of the battery cell 11 can be adaptively adjusted according to actual needs, and can be a regular shape such as a cuboid or other irregular shapes.

Referring to FIG. 6 , the third insulating member 12 includes a first filling part 121 and a second filling part 122 . The shapes of the first filling part 121 and the second filling part 122 match the shape of the void 13 , and are substantially triangular. The first filling portion 121 and the second filling portion 122 are respectively accommodated in the two vacancies 13 , so as to connect the two battery cells 11 while ensuring electrical insulation between the two battery cells 11 . Wherein, the first filling part 121 and the second filling part 122 may be foam with double-sided tape.

In other embodiments, the shapes of the first filling part 121 and the second filling part 122 can be adaptively adjusted according to the shape of the battery cell 11 .

Referring to FIG. 5 and FIG. 6 , the first electrical connector 20 includes a first cell connection end 201 and a first external device connection end 202 . The first cell connecting end 201 is connected to the pole 113 on each of the cells 11 . The first external device connection end 202 is connected to the first cell connection end 201 and is exposed to the first surface 101 . Wherein, the first electrical connector 20 is a conductive sheet. The conductive sheet may be a nickel sheet.

Referring to FIG. 5 and FIG. 6 , the first insulating member 60 is disposed on the first surface 101 . Wherein, the first external device connection end 202 is exposed to the first insulating member 60 .

Referring to FIG. 5 and FIG. 6 , the second insulating member 70 is disposed on the second surface 102 .

Referring to FIG. 5 and FIG. 6 , the second electrical connector 30 includes a second cell connection end 301 and a second external device connection end 302 . The second cell connecting end 301 is connected to the second end face 1112 of each cell 11 and is located between the second surface 102 and the second insulating member 70 . The second external device connection end 302 is connected to the second cell connection end 301 and is exposed to the second insulating member 70 . Wherein, the second electrical connector 30 is a conductive sheet. The conductive sheet may be a nickel sheet.

Referring to FIG. 5 and FIG. 6 , the packaging film 50 covers the peripheral surface 103 . The first cell connecting end 201 is located in the packaging film 50 . Wherein, the packaging film 50 may be a shrink film.

Example 5

The difference between Embodiment 5 and Embodiment 4 lies in the external component 80 .

Referring to FIGS. 12 and 13 , in Embodiment 5, the external member 80 includes two terminal wires 802 . The two terminal wires 802 are respectively electrically connected to the first external device connection end 202 and the second external device connection end 302 .

Referring to FIG. 14 , the present application further provides an electrical device 200 . The electrical device 200 includes the battery module 100 described above. The electrical device 200 may be a mobile electronic device, an energy storage device, an electric vehicle, a hybrid electric vehicle, or the like. The mobile electronic device may be a mobile phone, a wearable electronic device, a tablet computer, a notebook computer, and the like.

The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced. , without departing from the spirit and essence of the technical solutions of the present application.

Claims (13)

1. The utility model provides a battery module which characterized in that, battery module includes:

the battery core group is formed by stacking a plurality of battery cores or arranging the battery cores side by side, each battery core comprises a shell, an insulating part and a pole, the shell and the pole are made of conductive materials, the insulating part is positioned between the shell and the pole, the shell comprises a first end face, a second end face back to the first end face and a side face positioned between the first end face and the second end face, the side face comprises a side plane, and the pole is positioned on the side plane;

the first electric connecting piece is electrically connected with the pole of each battery cell, and part of the first electric connecting piece is exposed to the battery cell group; and

and the second electric connecting piece is electrically connected with the shell of each battery cell, and part of the second electric connecting piece is exposed to the battery core group, wherein the polarity of the battery cell led out by the second electric connecting piece is different from the polarity of the battery cell led out by the first electric connecting piece.

2. The battery module according to claim 1, wherein the electric core pack comprises a first surface, a second surface opposite to the first surface, and a circumferential surface connected between the first surface and the second surface;

the plurality of battery cells are stacked, a second end face of one battery cell is opposite to a first end face or a second end face of a battery cell adjacent to the second end face, and side faces of the battery cells are aligned to form the peripheral face;

or the plurality of battery cells are arranged side by side, the side surface of each battery cell is arranged side by side, and part of the side surfaces in each battery cell together form the peripheral surface.

3. The battery module of claim 1, wherein each of the cells further comprises an electrode assembly, the electrode assembly is housed in the casing, the electrode assembly comprises a first pole piece and a second pole piece having a polarity different from that of the first pole piece, the first pole piece and the second pole piece are laminated or wound to form the electrode assembly, the casing is electrically connected to the first pole piece, and the pole is electrically connected to the second pole piece.

4. The battery module of claim 2, wherein the first electrical connector comprises a first cell connection end and a first external device connection end, the first cell connection end connects to a terminal post on each of the cells, and the first external device connection end connects to the first cell connection end and is exposed to the cell pack; the second electric connector comprises a second battery cell connecting end and a second external equipment connecting end, and the second battery cell connecting end is connected with the shell of each battery cell; and the second external equipment connecting end is connected with the second battery cell connecting end and is exposed to the battery cell group.

5. The battery module of claim 4, further comprising a protective body covering the peripheral surface, the first surface, and the second surface, wherein the first cell connection end and the second cell connection end are located in the protective body, and the first external device connection end and the second external device connection end are exposed out of the protective body, wherein the protective body is formed by an injection molding process.

6. The battery module of claim 2, further comprising a packaging film that covers the peripheral surface, wherein the first cell connection end and/or the second cell connection end is located within the packaging film.

7. The battery module according to claim 4, further comprising a first insulating member disposed on the first surface and a second insulating member disposed on the second surface;

wherein the first external device connection end and the second external device connection end are exposed out of the first insulating member or the second insulating member;

or, the first external device connection end is exposed out of the first insulating member, and the second external device connection end is exposed out of the second insulating member.

8. The battery module of claim 7, wherein the first insulating member includes a first insulating portion and a second insulating portion connected to the first insulating portion, the first insulating portion is disposed on the first surface, and the second insulating portion is connected between the peripheral surface and the first cell connecting terminal, and wherein a terminal post on each of the cells is exposed on a surface of the second insulating portion facing the first cell connecting terminal and is connected to the first cell connecting terminal.

9. The battery module according to any one of claims 4 to 8, further comprising external connectors that connect the first external device connection terminal and the second external device connection terminal, respectively.

10. The battery module of claim 9, wherein the external connector comprises one or more of a spring plate, a terminal wire and a flexible circuit board.

11. The battery module according to any one of claims 1 to 8, wherein the first electrical connector is a conductive sheet and the second electrical connector is a conductive sheet.

12. The battery module according to any one of claims 1 to 8, wherein the cell group further comprises a third insulating member, and the third insulating member connects two adjacently arranged cells.

13. An electric device characterized by comprising the battery module according to any one of claims 1 to 12.

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