CN213583982U

CN213583982U - Battery module and power battery package

Info

Publication number: CN213583982U
Application number: CN202023143987.2U
Authority: CN
Inventors: 叶鹏; 黄韦森; 张波; 侯远强
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-06-29
Anticipated expiration: 2030-12-23

Abstract

The utility model relates to a battery provides a battery module and power battery package. The utility model provides a battery module includes first mounting panel (1), second mounting panel (2) and a plurality of electric core module (3), every electric core module (3) are respectively including electric core (31) that the multilayer level was arranged, the multilayer electric core (31) are arranged along upper and lower direction in proper order, and are a plurality of electric core module (3) are along upper and lower direction stack setting in proper order first mounting panel (1) with between second mounting panel (2), first mounting panel (1) with second mounting panel (2) are connected through fastener (4). The utility model also provides a power battery package including above-mentioned battery module. The utility model discloses well battery module has higher energy density, and spare part is simple, with low costs.

Description

Battery module and power battery package

Technical Field

The utility model relates to a battery, in particular to battery module. The utility model discloses still relate to a power battery package including this battery module.

Background

With the improvement of science and technology and the enhancement of human environmental protection consciousness, the green energy industry at home and abroad has entered the stage of high-speed development, and new energy automobiles are more and more concerned by society, especially electric automobiles. In an electric automobile, a power battery pack is an important component, and a battery module is a core component of the power battery pack, so that competition and development of a new energy market also put forward higher and higher requirements on energy density, safety and production cost of the battery module.

The packaging form of the power battery pack is closely related to the energy density and the safety of the power battery pack, the current common battery packaging forms mainly include a cylinder, a square and a soft pack, and the permeability of the soft pack battery in the new energy automobile market is continuously improved due to the advantages of good safety performance, light weight, large capacity, flexible design and the like. However, in the prior art, the soft package module design of the power battery pack still has the defects of more types of parts and higher cost. If can design the laminate polymer battery module of producing low cost, high energy density, be favorable to the market competitiveness in whole new energy automobile market.

In addition, because the battery core generates heat, the heat accumulation of the battery module can lead to the expansion of the battery core and the reduction of the consistency of the battery, and the consistency and the balance of each battery in the battery module are influenced, so that the cycle life of the battery module is shortened.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is first to provide a battery module, which has a high energy density, simple components and low cost.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a battery module, includes first mounting panel, second mounting panel and a plurality of electric core module, every electric core module includes the electric core that the multilayer level was arranged respectively, the multilayer electric core is arranged along upper and lower direction in proper order, and is a plurality of electric core module stacks the setting in proper order along upper and lower direction first mounting panel with between the second mounting panel, first mounting panel with the second mounting panel passes through the fastener and connects.

Further, the battery cell module further comprises a first frame plate and a second frame plate, and the battery cells are located between the first frame plate and the second frame plate in multiple layers.

Furthermore, the first frame plate and the second frame plate are horizontal plates, and the plurality of layers of battery cores are stacked at intervals through partition plates.

Furthermore, the first frame plate, the second frame plate and the partition plate are respectively provided with a spacing cavity matched with the battery cell and respectively provided with a hollow structure.

Furthermore, the first frame plate and the second frame plate are vertical plates and are respectively provided with a plurality of layers of limiting grooves matched with the battery cell, one end of the battery cell is installed in the corresponding limiting groove on the first frame plate, and the other end of the battery cell is installed in the corresponding limiting groove on the second frame plate.

Furthermore, the multilayer limiting grooves are arranged along the vertical direction at intervals so that a cooling air channel is formed between two adjacent layers of the battery cores.

Furthermore, the number of the battery cells on each layer in the battery cell module is 2-6, and the first mounting plate and the second mounting plate are respectively provided with a heat dissipation hole.

Further, the fastener is a cable tie.

Compared with the prior art, battery module have following advantage:

(1) battery module, with the mode installation formation electric core module that electric core arranged with the multilayer level, set up the superimposed mode about the electric core module again between first mounting panel and second mounting panel, utilize the fastener to connect first mounting panel and second mounting panel fixed in order to form battery module at last to make electric core set up in battery module with the mode of piling up of the formula of lying, not only improve the energy density of battery module, simplified the spare part quantity of battery module moreover, save manufacturing cost.

(2) The fastener of the utility model adopts the ribbon or the bolt with lower cost, the assembly operation is simple, the practicability is strong, and the cost is low; be provided with the louvre on first mounting panel and the second mounting panel respectively for cooling air between the electric core module can follow the louvre and go out the air, thereby strengthen the turbulent motion of the cooling air between the electric core module and between the electric core, with the radiating efficiency who improves electric core, further improve the security that electric core used.

Another object of the present invention is to provide a power battery pack, which can have a higher energy density, and the components are simple and low in cost.

a power battery pack is provided with the battery module according to any one of the technical schemes.

Furthermore, the power battery pack also comprises an air cooling assembly for carrying out air cooling heat dissipation on the battery module.

The advantages of the power battery pack and the battery module are the same compared with the prior art, and are not described herein again.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a first battery module according to an embodiment of the present invention;

fig. 2 is an exploded view of the structure of the battery module shown in fig. 1;

fig. 3 is a schematic structural diagram of a cell module in the battery module shown in fig. 1;

fig. 4 is a schematic structural diagram of a second battery module according to the embodiment of the present invention.

Description of reference numerals:

1 first mounting plate 2 second mounting plate

3 cell module 31 cell

32 first frame plate 33 second frame plate

34 spacing cavity 35 partition board

36 hollow-out structure 4 fastener

5 heat dissipation hole a electric core output electrode direction

Detailed Description

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

In addition, the term "front" referred to in the embodiments of the present invention refers to the cell output pole direction a of the cell module 3, "rear" refers to the direction opposite to the cell output pole direction a, "up and down" refers to the up and down direction of the cell output pole direction a, "left and right" refers to the left and right direction of the cell output pole direction a. The terminology is based on the orientations and positional relationships illustrated in the drawings and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

It is to be understood that, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "contacting" are intended to be open-ended, i.e., connected as either a fixed or removable connection or an integral connection; the components may be directly connected or indirectly connected through an intermediate medium, or the components may be connected through an intermediate medium or the components may be in an interactive relationship with each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a battery module, refer to fig. 1 to fig. 4, including first mounting panel 1, second mounting panel 2 and a plurality of electric core module 3, every electric core module 3 includes the electric core 31 that the multilayer level was arranged respectively, and multilayer electric core 31 is arranged along upper and lower direction in proper order, and a plurality of electric core modules 3 stack in proper order along upper and lower direction and set up between first mounting panel 1 and second mounting panel 2, and first mounting panel 1 passes through fastener 4 with second mounting panel 2 and is connected.

It should be noted that the first mounting plate 1 and the second mounting plate 2 can be mounting plates with completely identical structures, so that the mounting plates can be used as a standard component for mounting the battery module; the battery cell 31 may be a cylindrical lithium battery, a square lithium battery or a soft package lithium battery, and is preferably a soft package lithium battery; the cell output pole directions a of the plurality of cells 31 are preferably arranged in the same direction.

The utility model discloses in, on a plurality of electric core modules 3 along the upper and lower direction superpose the basis that sets up between first mounting panel 1 and second mounting panel 2 in proper order, utilize fastener 4 to be connected first mounting panel 1 and second mounting panel 2 and fix, so that a plurality of electric core modules 3 fix first mounting panel 1 and second mounting panel 2 in order forming into the battery module, consequently, fastener 4 can be arbitrary one kind can be with first mounting panel 1 and second mounting panel 2 be connected fixed connecting piece, fastener 4 sets up to form the encapsulated situation for arbitrary one side between can not making first mounting panel 1 and the second mounting panel 2. Under the preferred circumstances, fastener 4 is the ribbon, utilizes the ribbon to make first mounting panel 1, electric core module 3 and second mounting panel 2 form the structure of tying up the formula to make the structural stability of battery module higher, specifically, fastener 4 can adopt the ribbon that does not have the elasticity such as plastics ribbon. The fastening member 4 may also be a bolt, fixing holes corresponding to the positions are formed in the edges of the first mounting plate 1 and the second mounting plate 2, and after the battery cell module 3 is mounted between the first mounting plate 1 and the second mounting plate 2, the bolt passes through the fixing holes corresponding to the positions to fasten the battery cell module. The ribbon and the bolt pieces are adopted as the fastening pieces 4, the ribbon and the bolt pieces are all parts which are common in application and low in cost, extra design is not needed, and automatic operation can be achieved.

The utility model discloses above-mentioned basic technical scheme's battery module, during the installation, earlier form electric core module 3 with the mode installation that the multilayer level was arranged electric core 31, set up electric core module 3 between first mounting panel 1 and second mounting panel 2 with the mode of stack from top to bottom, utilize fastener 4 to connect first mounting panel 1 and second mounting panel 2 fixed at last, with the battery module that forms high energy density, thereby make electric core 31 set up in the battery module with the mode of piling up of the formula of lying, and can dispel the heat to electric core 31 in battery module working process.

As a preferred embodiment of the present invention, the cell module 3 further includes a first frame plate 32 and a second frame plate 33, and the multilayer cell 31 is located between the first frame plate 32 and the second frame plate 33. The cell 31 arranged in multiple layers is fixed by the first frame plate 32 and the second frame plate 33, so as to improve the mounting stability of the cell 31. The first frame plate 32 and the second frame plate 33 may be provided as frame plates having identical structures, so that they may be used as another standard component for mounting the battery module.

As a first installation form of the battery cells 31 in the battery cell module 3, referring to fig. 3, the first frame plate 32 and the second frame plate 33 are horizontal plates, and multiple layers of the battery cells 31 are stacked at intervals by the partition plates 35. The two adjacent layers of battery cells 31 are separated by the partition plate 35, so that direct contact of the battery cells 31 is avoided, and the heat dissipation performance in the battery cell module 3 is improved.

Preferably, the first frame plate 32, the second frame plate 33 and the partition plate 35 are respectively provided with a limiting cavity 34 matched with the battery cell 31, and respectively provided with a hollow structure 36. At this moment, spacing chamber 34 sets up to placing electric core 31 for the level can be used for, arrange electric core 31 level in first framed panel 32 when the installation, corresponding spacing intracavity on second framed panel 33 and the baffle 35, in order to realize the limiting displacement to electric core 31, avoid electric core 31 to take place the displacement in the use, simultaneously first framed panel 32, second framed panel 33 and baffle 35 are provided with hollow out construction 36, make the cooling air between electric core module 3, can form a plurality of air-out passageways through hollow out construction 36 between electric core 31, can guarantee that the upper and lower face of electric core 31 can both evenly dispel the heat well, strengthen the turbulent flow of cooling air in battery module inside, the heat radiating rate to electric core 31 production is fast, high efficiency.

As a second installation form of the battery cell 31 in the battery cell module 3, the first frame plate 32 and the second frame plate 33 are vertical plates, and are respectively provided with a plurality of layers of limiting grooves matched with the battery cell 31, one end of the battery cell 31 is installed in a corresponding limiting groove on the first frame plate 32, and the other end of the battery cell 31 is installed in a corresponding limiting groove on the second frame plate 33. At this moment, the first frame plate 32 and the second frame plate 33 are set to be vertical plates with a certain thickness, and preferably can be independently supported, so that the two ends of the battery cell 31 are respectively inserted into corresponding limiting grooves, the battery cell 31 is fixedly mounted, a structure for stacking and mounting the multiple layers of battery cells 31 is formed, and the stability of the whole structure of the battery cell module 3 can be ensured.

Preferably, the spacing between the plurality of layers of limiting grooves along the vertical direction is set to enable a cooling air channel to be formed between two adjacent layers of battery cores 31. Set up certain interval between the two adjacent layers of spacing groove so that battery cell 31 installs behind the spacing groove, has certain clearance as the cooling air passageway between the two adjacent layers of battery cell 31 to strengthen the turbulent flow of cooling air between battery cell 31, accelerate battery cell 31's rate of heat dissipation. It is further preferable that a plurality of vent holes are further provided on the first frame plate 32 and the second frame plate 33, so as to form more cooling air channels and enhance the turbulence of the cooling air between the battery cells 31.

As a preferred embodiment of the present invention, the number of each layer of battery cells 31 in the battery cell module 3 is 2-6, and the first mounting plate 1 and the second mounting plate 2 are respectively provided with heat dissipation holes 5. The number of each layer of battery cells 31 can be set to be multiple, so that the overall energy density of the battery module is further improved; the setting of louvre 5 on first mounting panel 1 and the second mounting panel 2 for cooling air between the electric core module 3 can follow louvre 5 and go out the air, thereby strengthens the turbulent motion of the cooling air between the electric core module 3 and between electric core 31, with the radiating efficiency who improves electric core 31, further improves the security that electric core 31 used.

As a first relatively optimized embodiment of the battery module in the present invention, the battery module includes a first mounting plate 1, a second mounting plate 2 and a plurality of battery cell modules 3, each battery cell module 3 includes two horizontal plates and two layers of horizontally arranged battery cells 31 located between the two horizontal plates, two layers of battery cells 31 are provided between the two layers of battery cells 31, a partition plate 35 is provided between the two layers of battery cells 31, two limiting cavities 34 matched with the battery cells 31 are provided on the two horizontal plates and the partition plate 35, and a hollow structure 36 is provided respectively; the battery cell modules 3 are sequentially overlapped and arranged between the first mounting plate 1 and the second mounting plate 2 along the vertical direction, and the first mounting plate 1 and the second mounting plate 2 are bound and connected through a plastic binding belt; the first mounting plate 1 and the second mounting plate 2 are respectively provided with a heat dissipation hole 5.

The battery module that this embodiment provided, the installation is: firstly, placing two battery cores 31 in the limiting cavities of the horizontal plate, placing a partition plate 35 on the layer of battery cores 31, then placing the two battery cores 31 in the limiting cavities of the partition plate 35, and placing another horizontal plate on the layer of battery cores 31 to complete the assembly of the battery core module 3; then install a plurality of electric core modules 3 stack in proper order on second mounting panel 2, install first mounting panel 1 at electric core module 3's top, recycle the plastics ribbon and bind in order to form the battery module.

As a second relatively optimized embodiment of the battery module in the present invention, the battery module includes a first mounting plate 1, a second mounting plate 2 and a plurality of battery cell modules 3, each battery cell module 3 includes two vertical plates with a certain thickness and four battery cells 31 located between the two vertical plates, two layers of limiting grooves matched with the battery cells 31 are provided on the vertical plates, and each layer of limiting grooves is two; the battery cell modules 3 are sequentially overlapped and arranged between the first mounting plate 1 and the second mounting plate 2 along the vertical direction, and the first mounting plate 1 and the second mounting plate 2 are bound and connected through a plastic binding belt; the first mounting plate 1 and the second mounting plate 2 are respectively provided with a heat dissipation hole 5.

The battery module that this embodiment provided, the installation is: firstly, sequentially installing four battery cores 31, wherein one end of each battery core 31 is inserted into a corresponding limiting groove on one vertical plate, and the other end of each battery core 31 is inserted into a corresponding limiting groove on the other vertical plate, so that the battery core module 3 is assembled; then install a plurality of electric core modules 3 stack in proper order on second mounting panel 2, install first mounting panel 1 at electric core module 3's top, recycle the plastics ribbon and bind in order to form the battery module.

In the utility model discloses on the basis of foretell battery module, the utility model discloses the second aspect provides a power battery package, is provided with an arbitrary technical scheme of above-mentioned battery module. Therefore, the battery module has at least all the advantages brought by the technical scheme of the embodiment of the battery module.

The utility model discloses in, power battery package is preferred still to be provided with and is used for carrying out the radiating air-cooled subassembly of forced air cooling to the battery module. The air cooling assembly may be configured as a fan, and the battery cell module 3 is located on a cooling air path of the air cooling assembly. The air-cooled component is preferably arranged on the side surface of the battery module except the first mounting plate 1 and the second mounting plate 2 so as to improve the utilization rate of cooling air of the air-cooled component.

Further preferably, with respect to the cell output pole direction a, the left side or the right side of the cell module 3 is provided with a fan that blows air toward the cell module 3.

As can be seen from the above description, the utility model provides a battery module sets up battery module with the mode of piling up of formula of lying down with electric core 31, and connects first mounting panel 1 and second mounting panel 2 with fastener 4, not only improves the energy density of battery module, has simplified the spare part quantity of battery module moreover, saves manufacturing cost.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery module, its characterized in that includes first mounting panel (1), second mounting panel (2) and a plurality of electric core module (3), every electric core module (3) respectively include electric core (31) that the multilayer level was arranged, the multilayer electric core (31) are arranged along upper and lower direction in proper order, and are a plurality of electric core module (3) are along upper and lower direction stack setting in proper order first mounting panel (1) with between second mounting panel (2), first mounting panel (1) with second mounting panel (2) are connected through fastener (4).

2. The battery module according to claim 1, wherein the cell module (3) further comprises a first frame plate (32) and a second frame plate (33), and the plurality of layers of the cells (31) are located between the first frame plate (32) and the second frame plate (33).

3. The battery module according to claim 2, wherein the first frame plate (32) and the second frame plate (33) are horizontal plates, and a plurality of layers of the battery cells (31) are stacked at intervals through separators (35).

4. The battery module according to claim 3, wherein the first frame plate (32), the second frame plate (33) and the partition plate (35) are respectively provided with a limiting cavity (34) matched with the battery cell (31) and a hollow structure (36).

5. The battery module according to claim 2, wherein the first frame plate (32) and the second frame plate (33) are vertical plates and are respectively provided with a plurality of layers of limiting grooves matched with the battery cell (31), one end of the battery cell (31) is installed in the corresponding limiting groove on the first frame plate (32), and the other end of the battery cell is installed in the corresponding limiting groove on the second frame plate (33).

6. The battery module according to claim 5, wherein the spacing between the plurality of layers of limiting grooves in the vertical direction is set to enable a cooling air channel to be formed between two adjacent layers of the battery cores (31).

7. The battery module according to any one of claims 1 to 6, wherein the number of the battery cells (31) in each layer of the battery cell module (3) is 2-6, and the first mounting plate (1) and the second mounting plate (2) are respectively provided with heat dissipation holes (5).

8. The battery module according to any one of claims 1 to 6, wherein the fastener (4) is a tie.

9. A power battery pack, characterized in that the power battery pack is provided with the battery module according to any one of claims 1 to 8.

10. The power battery pack of claim 9, further comprising an air cooling assembly for air cooling the battery module.