CN218525681U

CN218525681U - Support multilayer structure's battery module

Info

Publication number: CN218525681U
Application number: CN202222848502.2U
Authority: CN
Inventors: 吴小磊; 陆海洋
Original assignee: Wuxi Mingheng Hybrid Power Technology Co ltd
Current assignee: Wuxi Mingheng Hybrid Power Technology Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-02-24
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a battery module supporting a multilayer structure, which comprises a battery box body and a battery body, wherein the battery box body is provided with a cavity; the battery box body is formed by enclosing a top cover, a bottom plate, a group of opposite side plates and a group of opposite end plates, wherein the group of opposite side plates and the group of opposite end plates are positioned on the side surfaces, support columns are formed on the side plates and/or the end plates, the upper end surfaces and/or the lower end surfaces of the support columns are arranged in a mode of protruding the end surfaces of the top cover and/or the bottom plate, and connecting column holes are formed in the support columns in a penetrating mode from top to bottom; the axes of the corresponding connecting column holes in the two battery box bodies which are adjacently arranged from top to bottom are positioned on the same straight line, and the connecting column body can penetrate through at least two adjacent connecting column holes. The stability of structure has both been guaranteed to the realization, has the space of saving middle level support and taking up, realizes the multilayering setting of battery module, improves space utilization greatly, reduces the effect of battery system's overall quality.

Description

Support multilayer structure's battery module

Technical Field

The utility model relates to a battery module structure field specifically relates to a support multilayer structure's battery module.

Background

With the steady development of new energy automobiles, a power battery system becomes a current hot research device, a battery system PACK (PACK means packaging, and the battery PACK means a combined battery, namely the packaging, packaging or assembling process of the power battery) is one of important links, wherein the lightweight problem of the power battery system is to improve the performance of the new energy automobiles; the driving experience is enhanced; the key problem of reducing power consumption also becomes one of the technical problems that PACK engineers want to overcome. However, it is very difficult to reduce the mass of the power battery system while ensuring the structural strength and energy density of the power battery system. By means of structural decomposition, in the power battery system, the proportion of the battery module is the largest, which is about seventy percent of the power battery system, so the key of the light weight of the power battery is the light weight of the battery module. And the plate body on the lightweight structure that can realize most directly in the module is the module, especially end plate and curb plate on the module, mainly play the fixed and upper and lower fixed action between the module of being connected between the electric core.

The upper module and the lower module adopt middle level leg joint at present mostly, and such connected mode's advantage is connected stably, and structural strength is high, but such connected mode not only influences space utilization, can't accomplish the multilayer structure of module, has still increased power battery system's overall quality, and this is undoubtedly an important influence factor to new energy automobile's wholeness ability and power consumption.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned prior art, the utility model aims to overcome among the prior art often need adopt the middle level support to connect between the multiunit battery module, lead to whole quality to increase, space utilization reduces the scheduling problem to provide one kind and can both guarantee the stability of structure, have the space of saving middle level support and occupy, realize the multilayering setting of battery module, improve space utilization greatly, reduce the battery system's the battery module that supports multilayer structure of overall quality.

In order to achieve the above object, the present invention provides a battery module supporting a multi-layer structure, which includes a battery box body formed with a cavity, and a battery body disposed in the cavity; wherein,

the battery box body is formed by enclosing a top cover, a bottom plate, a group of opposite side plates and a group of opposite end plates, wherein the side plates and/or the end plates are/is provided with support columns, the upper end surfaces and/or the lower end surfaces of the support columns are/is arranged to protrude out of the end surfaces of the top cover and/or the bottom plate, and the support columns are communicated from top to bottom to form connection column holes;

the axes of the corresponding connecting column holes in the two battery box bodies which are adjacently arranged from top to bottom are positioned on the same straight line, and the connecting column body can penetrate through at least two adjacent connecting column holes.

Preferably, the side face of the side plate, which is in contact with the end plate, is an edge, and the supporting columns are located on the edges of the side plate and/or the end plate.

Preferably, the support column is located on the end plate, and the upper end face of the end plate protrudes out of the upper end faces of the top cover and the side plates.

Preferably, the top cover is located between a set of the opposite end plates and covers the upper surfaces of the side plates.

Preferably, the upper surface part of the side plate extends inwards along the direction parallel to the end surface to form a mounting lug, the end part of the top cover close to the side surface is sunken to form a mounting groove, the mounting lug is matched with the mounting groove to form a mounting hole group, and the connecting piece penetrates through the mounting hole group to fixedly connect the side plate and the top cover.

Preferably, two side portions of the end plate, which are close to the side plate, are recessed inwards to form an accommodating groove, and the end portion of the side plate is bent inwards to form a surrounding edge capable of being clamped in the accommodating groove.

Preferably, the surface of the end plate contacting the side plate is formed as a welding surface.

Preferably, a plurality of lightweight holes are formed in the end plate in a penetrating manner, and a plurality of reinforcing ribs are formed on the inner end surface of the end plate in a protruding manner.

Preferably, the upper surface part of the side plate and/or the end plate is upwards convexly provided with a positioning pin, and the lower surface part of the side plate and/or the end plate is downwards concavely provided with a positioning hole which can be inserted into the positioning pin.

Preferably, the support posts are formed as a unitary structure with the panel body portions of the side panels and/or end panels.

Through above-mentioned technical scheme, set up the support column on the curb plate of battery box and/or end plate, improved the intensity of whole battery module effectively. Based on this, run through on the support column and set up the connecting post hole to make the connecting post hole on every battery module can the axis be located same straight line and set up, through the setting of running through of connecting the cylinder, can realize the connection setting of a plurality of battery modules. Such mode is improved from the end plate or the curb plate of battery module, the connected mode of two battery modules that link to each other from top to bottom has been adjusted, make can the multilayering connect between a plurality of battery modules, no longer restrict the fixed mode in traditional middle level supporting structure simultaneously, overall structure's stability has both been guaranteed, the structure that has saved middle level support again sets up the space, under the prerequisite that battery module multilayering set up, space utilization has been improved greatly, whole battery system's overall quality has been reduced.

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

Drawings

The accompanying drawings, which 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 principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of one of two assembled battery modules according to the present invention;

fig. 2 is a schematic structural diagram of another view angle after two groups of battery modules are assembled according to the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

fig. 4 is a schematic structural diagram of a battery module provided by the present invention;

fig. 5 is a schematic structural diagram of an end plate provided by the present invention.

Description of the reference numerals

1-a top cover; 2-a bottom plate; 3-side plates; 4-end plate; 5-a support column; 6-positioning pins; 7-positioning holes;

11-mounting grooves; 12-a connector;

31-mounting ears; 32-a surrounding edge;

41-accommodating grooves; 42-lightweight holes; 43-reinforcing ribs;

51-connecting post holes; 52-connecting cylinder; 53-weld face.

Detailed Description

The following describes the embodiments of the present invention in detail. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1-4, the utility model provides a support multilayer structure's battery module, support multilayer structure's battery module is including the battery box that is formed with the cavity, and set up in battery body in the cavity. The battery box body is formed by enclosing a top cover 1, a bottom plate 2, a group of opposite side plates 3 and a group of opposite end plates 4, wherein the side plates 3 and/or the end plates 4 are provided with support pillars 5, the upper end surfaces and/or the lower end surfaces of the support pillars 5 protrude out of the end surfaces of the top cover 1 and/or the bottom plate 2, and the support pillars 5 are penetrated from top to bottom to form connecting pillar holes 51; the axes of the corresponding connecting post holes 51 in two adjacent battery box bodies from top to bottom are located on the same straight line, and the connecting post 52 can penetrate through at least two adjacent connecting post holes 51. The supporting columns 5 are one of the parts of the side plate 3 or the end plate 4, that is, the supporting columns 5 are columnar structures located on the side plate 3 or the end plate 4, and can be integrally die-cast with the plate body part on the side plate 3 or the end plate 4 during the machining process.

It should be noted that the battery body may be disposed according to an inner core of a battery module, which can be understood and conventionally used by those skilled in the art, and may include, for example:

FPC gathers the board: important components required to be equipped in the BMS realize monitoring of the voltage and the temperature of the battery cell; the device is connected with data acquisition and transmission and has an overcurrent protection function;

an output bus: the busbar is a connection mode of incoming lines of the batteries, and mainly increases the contact area, reduces energy consumption and reduces temperature rise;

aluminum bars are connected in series: the battery cell is used for connecting the battery cells in series, and has the characteristics of high electric conductivity, large current-carrying capacity, good heat conduction, light weight, no magnetism, convenience in recovery and the like;

a wire harness isolation plate: separating the battery core from the FPC acquisition board;

negative electrode terminal: connecting the copper bar with the negative output bus bar to play a role in fastening;

battery cell: the minimum unit of the power battery is an electric energy storage unit;

a positive electrode terminal: the copper bar is connected with the positive output bus bar to play a role in fastening.

Of course, the present invention is not limited to the above-described structures, and structures and specific arrangements that can be understood and used by those skilled in the art can be used herein. )

In a preferred embodiment, the support struts 5 are located on both sides of the side plate 3 and/or of the end plate 4, for example, the side faces of the side plate 3 and of the end plate 4 that are in contact define edges, and the support struts 5 are located on the edges of the side plate 3 and/or of the end plate 4. Such a mode of setting up can all be provided with support column 5 on four edges of whole battery box to overall structure's after connecting can further improve a plurality of battery module equipment stability.

In a more preferred embodiment of the present invention, the supporting column 5 is located on the end plate 4, and the upper end surface of the end plate 4 is protruded from the top cover 1 and the upper end surface of the side plate 3. Specifically, the top cover 1 may be disposed between a set of the opposite end plates 4 and covered on the upper surface of the side plate 3. By adopting the arrangement mode, the arrangement requirement that the end plate 4 protrudes out of the top cover 1 can be conveniently realized, and meanwhile, the relative closed arrangement of the whole battery box body can be realized.

Meanwhile, in order to effectively realize the fixed closing of the side plate 3 and the top cover 1, the upper surface part of the side plate 3 extends inwards along the direction parallel to the end surface to form a mounting lug 31 (the inner part here refers to the inward extension along the direction of the plane of the end surface towards the direction of the cavity, for example, the side plate 3 is vertically placed, the plane of the end surface is a horizontal plane, the mounting lug 31 extends along the horizontal direction towards the direction of the cavity to form a horizontally arranged mounting sheet), the end part of the top cover 1 close to the side surface is recessed to form a mounting groove 11, the mounting lug 31 is matched with the mounting groove 11 to form a mounting hole group, and the connecting piece 12 penetrates through the mounting hole group to fixedly connect the side plate 3 and the top cover 1.

In order to make the end plate 4 can be connected with the curb plate 3 between block effectively to improve the stability of the mounting structure of whole battery box, further improve the support dynamics to the stack setting of multilayer battery module, be close to in the end plate 4 two side parts of curb plate 3 are inwards sunken to be formed with holding tank 41, the inside bending of tip of curb plate 3 is formed with can the joint in the surrounding edge 32 in holding tank 41.

In a more preferred embodiment, as shown in fig. 5, the surface of the end plate 4 contacting the side plate 3 may be formed as a welding surface 53. The welding surfaces of the end plates 4 and the side plates 3 may be welded together by a laser welding machine, and the welds may be a plurality of linear welds in the length direction, so that the structural strength of the entire battery module can be further enhanced.

Meanwhile, a plurality of lightweight holes 42 may be further formed in the end plate 4 in a penetrating manner, and a plurality of reinforcing ribs 43 are formed on the inner end surface of the end plate 4 in a protruding manner. The lightweight hole 42 is a through hole structure, and the strength of the whole structure is improved and the whole weight is further reduced by matching the reinforcing ribs 43.

The upper surface part of the side plate 3 and/or the end plate 4 is upwards convexly provided with a positioning pin 6, and the lower surface part of the side plate 3 and/or the end plate 4 is downwards concavely provided with a positioning hole 7 which can be inserted and arranged with the positioning pin 6. Through the addition of locating pin 6, overall structure's stability has further been guaranteed, no longer constrain in traditional middle level supporting structure's fixed setting, space utilization has been improved greatly, and, can realize the location between the adjacent battery module effectively, further promote overall connection's stability through the grafting mode, compare in the above-mentioned connected mode that realizes through connecting cylinder 52 in edge department, overall connection's stability has further been promoted, further provide effectual assurance for the connection of module multilayering structure, space utilization has been improved greatly.

The connection between the upper and lower adjacent battery modules can be more compact in the above mode, the space utilization rate can be effectively improved, the quality of the whole battery system is reduced, and the effective realization of the multi-layer structure of the battery modules is ensured.

The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be arbitrarily combined with each other, and the disclosed content of the present invention should be considered as the same as long as it does not violate the idea of the present invention.

Claims

1. The battery module supporting the multilayer structure is characterized by comprising a battery box body and a battery body, wherein a cavity is formed in the battery box body; wherein,

the battery box body is formed by enclosing a top cover (1), a bottom plate (2), a group of opposite side plates (3) and a group of opposite end plates (4), wherein the side plates (3) and/or the end plates (4) are/is provided with support columns (5), the upper end surfaces and/or the lower end surfaces of the support columns (5) are/is arranged in a mode of protruding the end surfaces of the top cover (1) and/or the bottom plate (2), and the support columns (5) are formed with connecting column holes (51) in a penetrating mode from top to bottom;

the axes of the corresponding connecting column holes (51) in the two battery box bodies which are adjacently arranged from top to bottom are positioned on the same straight line, and the connecting column body (52) can penetrate through at least two adjacent connecting column holes (51).

2. The battery module supporting the multilayer structure as recited in claim 1, wherein the side surfaces of the side plates (3) and the end plates (4) that are in contact with each other are edges, and the support columns (5) are located on the edges of the side plates (3) and/or the end plates (4).

3. A battery module supporting a multi-layered structure according to claim 2, wherein the support posts (5) are located on the end plates (4), and the upper end surfaces of the end plates (4) are disposed to protrude from the upper end surfaces of the top cover (1) and the side plates (3).

4. A battery module supporting a multi-layered structure according to claim 3, wherein the top cover (1) is located between a set of opposite end plates (4) and is covered on the upper surface of the side plate (3).

5. A battery module supporting a multi-layer structure according to claim 3 or 4, wherein the upper surface of the side plate (3) is formed with a mounting ear (31) extending inwards in a direction parallel to the end surface, the end of the top cover (1) near the side surface is formed with a mounting groove (11) in a concave manner, the mounting ear (31) is formed with a mounting hole group matched with the mounting groove (11), and the connecting member (12) is used for fixedly connecting the side plate (3) and the top cover (1) by penetrating through the mounting hole group.

6. The battery module supporting the multilayer structure according to claim 3 or 4, wherein two side portions of the end plates (4) adjacent to the side plates (3) are recessed inward to form receiving grooves (41), and the end portions of the side plates (3) are bent inward to form peripheral edges (32) capable of being engaged in the receiving grooves (41).

7. The battery module supporting a multi-layered structure according to claim 6, wherein the surface of the end plate (4) contacting the side plate (3) is formed as a welding surface (53).

8. The battery module supporting a multi-layer structure according to any one of claims 1 to 4, wherein a plurality of lightening holes (42) are further formed through the end plate (4), and a plurality of reinforcing ribs (43) are formed on the inner end surface of the end plate (4) in a protruding manner.

9. The battery module supporting the multilayer structure according to any one of claims 1 to 4, wherein the upper surface portions of the side plates (3) and/or the end plates (4) are formed with positioning pins (6) protruding upward, and the lower surface portions of the side plates (3) and/or the end plates (4) are formed with positioning holes (7) recessed downward so as to be insertably disposed with the positioning pins (6).

10. The battery module supporting a multi-layered structure according to any one of claims 1 to 4, wherein the support posts (5) are formed as an integral structure with the side plates (3) and/or the plate body portions of the end plates (4).