CN215377504U

CN215377504U - Balanced battery module

Info

Publication number: CN215377504U
Application number: CN202121297318.2U
Authority: CN
Inventors: 张宇; 管伟东; 苏小军; 李进
Original assignee: Jiangsu Kesen Medical Devices Co ltd
Current assignee: Jiangsu Kesen Medical Devices Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-31
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a balanced battery module, which comprises a shell and a battery core group positioned in the shell, wherein the battery core group further comprises a plurality of battery cores which are sequentially arranged side by side, adjacent battery cores are connected through a copper bar, and the shell further comprises 2 end plates and 2 side plates which are respectively connected with two ends of the 2 end plates; the side plate further comprises an aluminum substrate, insulating layers and heat conducting silica gel cushion layers, wherein the insulating layers and the heat conducting silica gel cushion layers are located on two sides of the aluminum substrate, the insulating layers in the side plate are connected with the electric core group in an adhering mode, and a plurality of protruding strips are arranged on one surface of the aluminum substrate in the side plate in parallel at intervals. The balanced battery module can enhance the structural strength of the battery module, avoid the problems of stress damage and the like caused by the expansion or contraction of the battery core, and prolong the service life of the battery module.

Description

Balanced battery module

Technical Field

The utility model relates to a balanced battery module, and belongs to the technical field of new energy batteries.

Background

The main structure of the new energy battery module which is generally applied in the market at present is as follows: the structure of PET insulating film is covered after the aluminium panel stamping forming, then the terminal surface is welded with the end plate after bending, plays the effect of cladding and fixed inside electric core. However, as the energy density of the new energy battery module is larger and larger, the battery core and the battery core are more and more compact, and the strength of the module structure concerns the safety of the whole new energy battery module; simultaneously, the inside temperature balance problem of new energy battery module can't be solved always, and the temperature difference between electric core and the electric core changes, leads to the charge-discharge capacity of electric core to appear the difference, leads to the unable accurate energy storage condition of discerning each electric core of BMS.

Disclosure of Invention

The utility model aims to provide an equalizing type battery module which can enhance the structural strength of the battery module, avoid the problems of stress damage and the like caused by expansion or contraction of a battery core and prolong the service life of the battery module.

In order to achieve the purpose, the utility model adopts the technical scheme that: a balanced battery module comprises a shell and a battery core group positioned in the shell, wherein the battery core group further comprises a plurality of battery cores which are sequentially arranged side by side, adjacent battery cores are connected through a copper bar, and the shell further comprises 2 end plates and 2 side plates which are respectively connected with two ends of the 2 end plates;

the side plate further comprises an aluminum substrate, insulating layers and heat conducting silica gel cushion layers, wherein the insulating layers and the heat conducting silica gel cushion layers are located on two sides of the aluminum substrate, the insulating layers in the side plate are connected with the electric core group in an adhering mode, and a plurality of protruding strips are arranged on one surface of the aluminum substrate in the side plate in parallel at intervals.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the plurality of the protruding strips are vertically arranged.

2. In the above scheme, the aluminum substrate is attached to the heat-conducting silica gel cushion layer through the adhesive layer.

3. In the above scheme, the aluminum substrate is an aluminum extruded plate.

4. In the above scheme, the protruding strips on the aluminum substrate are obtained by integrally forming an aluminum extrusion die.

5. In the above scheme, the insulating layer is a PET insulating film layer.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the balanced battery module, the side plate further comprises the aluminum substrate, the insulating layers and the heat-conducting silica gel cushion layers, the insulating layers and the electric core groups are located on two sides of the aluminum substrate, the insulating layers in the side plate are connected with the electric core groups in a bonding mode, heat generated by overcurrent of the electric core can be rapidly transmitted out, the temperature of the electric core is balanced, the internal temperature of the battery module is kept stable in a lower interval, and the use safety of the battery module is improved; in addition, a plurality of protruding strips are arranged on one surface of the aluminum substrate in the side plate in parallel and at intervals, so that the structural strength of the battery module can be enhanced, the problems of stress damage and the like caused by expansion or contraction of the battery core are avoided, and the service life of the battery module is prolonged.

Drawings

FIG. 1 is a schematic structural diagram of an equalizing battery module according to the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

fig. 3 is an enlarged view of a structure in fig. 2.

In the above drawings: 1. an aluminum substrate; 2. an insulating layer; 3. a thermally conductive silica gel cushion layer; 4. a raised strip; 5. an electric core; 6. copper bars; 7. a side plate; 8. and an end plate.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a balanced battery module comprises a shell and a battery core group positioned in the shell, wherein the battery core group further comprises a plurality of battery cores 5 which are sequentially arranged side by side, adjacent battery cores 5 are connected through a copper bar 6, and the shell further comprises 2

end plates

8 and 2 side plates 7 which are respectively connected with two ends of the 2 end plates 8;

the side plate 7 further comprises an aluminum substrate 1, insulating layers 2 and heat-conducting silica gel cushion layers 3, wherein the insulating layers 2 and the heat-conducting silica gel cushion layers are located on two sides of the aluminum substrate 1, the insulating layers 2 in the side plate 7 are connected with the electric core group in an adhering mode, and a plurality of protruding strips 4 are arranged on one surface of the aluminum substrate 1 in the side plate 7 in a parallel mode and at intervals.

A plurality of the convex strips 4 are vertically arranged; the aluminum substrate 1 is attached to the heat-conducting silica gel cushion layer 3 through an adhesive layer.

Example 2: a balanced battery module comprises a shell and a battery core group positioned in the shell, wherein the battery core group further comprises a plurality of battery cores 5 which are sequentially arranged side by side, adjacent battery cores 5 are connected through a copper bar 6, and the shell further comprises 2

end plates

The aluminum substrate 1 is an aluminum extruded plate; the convex strips 4 on the aluminum substrate 1 are obtained by adopting an aluminum extrusion die to be integrally formed; the insulating layer 2 is a PET insulating film layer.

Current flows through the anode and the cathode, the resistor R exists in the thousand-cell and the copper bar, certain difference occurs in the manufacturing process, the resistor R is unequal, the current I in the series circuit is certain, and the resistance is different from the resistance R in the thousand-cell and the copper bar in the manufacturing process according to the P = I²According to the utility model, adjacent battery modules are directly linked by utilizing the heat-conducting silica gel pad, and the heat balance of the whole system is achieved in a heat conduction mode;

the battery core generates heat, the volume of the battery core expands, and the aluminum extruded section bar is used for coating the battery core, so that the battery core has higher strength and better toughness, and safety problems such as stress damage caused by expansion and contraction of the battery core can be avoided.

When the balanced battery module is adopted, the heat generated by overcurrent of the battery core can be quickly transferred out, the temperature of the battery core is balanced, the internal temperature of the battery module is kept stable in a lower interval, and the use safety of the battery module is improved;

in addition, can strengthen battery module's structural strength, avoid because of electric core inflation or shrink lead to the stress failure scheduling problem, prolong battery module's life.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an equalizing type battery module, includes the casing and is located the electric core group of casing, and this electric core group further includes electric core (5) that a plurality of set up side by side in proper order, connects its characterized in that through copper bar (6) between adjacent electric core (5): the shell further comprises 2 end plates (8) and 2 side plates (7) which are respectively connected with two ends of the 2 end plates (8);

the side plate (7) further comprises an aluminum substrate (1), and an insulating layer (2) and a heat-conducting silica gel cushion layer (3) which are positioned on two sides of the aluminum substrate (1), wherein the insulating layer (2) in the side plate (7) is connected with the electric core group in an adhering manner, and a plurality of protruding strips (4) are arranged on one surface of the aluminum substrate (1) in the side plate (7) in a parallel and spaced manner.

2. The balanced battery module as claimed in claim 1, wherein: the plurality of the protruding strips (4) are vertically arranged.

3. The balanced battery module as claimed in claim 1, wherein: the aluminum substrate (1) is attached to the heat-conducting silica gel cushion layer (3) through an adhesive layer.

4. The balanced battery module as claimed in claim 1, wherein: the aluminum substrate (1) is an aluminum extruded plate.

5. The balanced battery module as claimed in claim 1, wherein: the protruding strips (4) on the aluminum substrate (1) are obtained by integrally forming an aluminum extrusion die.

6. The balanced battery module as claimed in claim 1, wherein: the insulating layer (2) is a PET insulating film layer.