Module side plate, battery module, battery pack and vehicle

Abstract

The utility model provides a module side plate, battery module, battery pack and vehicle, relates to battery technical field, including side plate body, lining plate and side plate mounting bracket, the lining plate is provided in the side of side plate body facing the battery cell, the side plate mounting bracket is provided in the side of side plate body back to the battery cell, the side plate mounting bracket is provided in the side of side plate body back to the battery cell. The side plate mounting support comprises a first plate and a second plate, the joint of the first plate and the second plate protrudes outwards to form a support portion, a plurality of mounting holes are formed in the support portion, and the thickness of the portion, provided with the mounting holes, of the support portion is larger than that of the portion, not provided with the mounting holes, of the support portion. The side plate mounting bracket is locally thickened, and the mounting hole is thickened, so that the light weight is realized on the basis of meeting the strength requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a module side plate, a battery module, a battery pack and a vehicle. Background Art

[0002] The module side panel is a structure arranged on the side of the battery module and used to fix the battery module. The battery module needs to meet certain structural strength requirements, and at the same time, it needs to be as lightweight as possible to reduce the weight of the battery pack, thereby reducing the weight of the entire vehicle. In order to meet the lightweight requirements while ensuring strength, the Chinese utility model patent with authorization announcement number CN217426966U discloses module side panels and modules. By designing the side panels as a combination of the second panel and the first panel, the weight of the side panels is reduced while ensuring strength. However, the patent only focuses on the side panels themselves, ignoring that other structures on the side panels still have room for improvement. Utility Model Content

[0003] In order to address the deficiencies of the prior art, the purpose of the utility model is to provide a module side panel, a battery module, a battery pack and a vehicle, which further achieve lightweighting while meeting strength requirements by optimizing the structure of the side panel mounting bracket.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the utility model provides a module side panel, including a side panel body, a lining plate and a side panel mounting bracket, the lining plate is arranged on the side of the side panel body facing the battery cell, the side panel mounting bracket is arranged on the side of the side panel body facing away from the battery cell, the side panel mounting bracket includes a first plate member and a second plate member, the connection between the first plate member and the second plate member protrudes outward to form a bracket portion, a plurality of mounting holes are opened on the bracket portion, and the thickness of the bracket portion where the mounting holes are opened is greater than the thickness where the mounting holes are not opened.

[0005] Preferably, the mounting holes are distributed on the bracket portion at equal intervals.

[0006] Preferably, the bracket portion includes a plurality of protrusions and grooves distributed at intervals, each mounting hole is arranged at the protrusion, and the thickness at the protrusion position is greater than the thickness at the groove position.

[0007] Preferably, it further comprises a plurality of mounting gaskets, the number of which is equal to the number of mounting holes, a through hole is opened in the middle of the mounting gasket, and the specification of the through hole matches the specification of the mounting hole.

[0008] Preferably, the first plate member includes a first bending portion, a second bending portion and a third bending portion, the first bending portion is fixedly connected to the side panel body, the second bending portion is connected between the first bending portion and the third bending portion, and the third bending portion is used to be fixedly connected to the second plate member to form a bracket portion.

[0009] Preferably, the first plate component and the second plate component have the same shape.

[0010] Preferably, the side plate body has connecting parts on both sides, the bottom of the side plate body has a first supporting part, and the connecting part and the first supporting part are both bent vertically toward the direction of the battery cell; the bottom of the lining plate has a second supporting part, and the second supporting part is bent vertically toward the direction of the battery cell.

[0011] The second aspect of the utility model provides a battery module, comprising a plurality of battery cells, two module side plates provided above, two end plates and a bottom plate, wherein the module side plates, the end plates and the bottom plate are fixedly connected to accommodate the battery cells; the module side plates and the end plates are arranged around the outside of the battery cells, the two module side plates are arranged opposite to each other, and the two end plates are arranged opposite to each other; the bottom plate is arranged at the bottom of the battery cells.

[0012] A third aspect of the utility model provides a battery pack, comprising a box body and at least one battery module provided above, wherein a mounting beam is provided inside the box body, and the battery module is fixedly connected to the mounting beam via a side panel mounting bracket on a module side panel.

[0013] A fourth aspect of the present invention provides a vehicle, comprising a battery pack provided above.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a module side panel, a battery module, a battery pack and a vehicle. The side panel mounting bracket is partially thickened, the mounting hole is thickened to ensure the structural strength, and the remaining positions can use relatively thin materials. With the design of double-layer side panels, further lightweighting is achieved on the basis of meeting the strength requirements. In addition, the bracket part adopts a design of protrusions and grooves, and a thickening design is adopted at the position where bolt connection is required, and thinner materials are used at the remaining positions to further reduce the weight of the side panel mounting bracket; a mounting gasket is added at the mounting hole to disperse the stress to the entire bracket to prevent stress concentration from causing structural failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the side panel of the module of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the side panel mounting bracket.

[0018] Among them, 1. side panel body; 11. connecting part; 12. first supporting part; 2. lining plate; 21. second supporting part; 3. side panel mounting bracket; 31. first plate; 311. first bending part; 312. second bending part; 313. third bending part; 32. second plate; 33. bracket part; 331. mounting hole; 332. protrusion; 333. groove; 4. mounting gasket. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1

[0021] like Figure 1-Figure 2 As shown, this embodiment provides a module side panel, including a side panel body 1, a lining plate 2 and a side panel mounting bracket 3, the lining plate 2 is arranged on the side of the side panel body 1 facing the battery cell, the side panel mounting bracket 3 is arranged on the side of the side panel body 1 facing away from the battery cell, the side panel mounting bracket 3 includes a first plate member 31 and a second plate member 32, the connection between the first plate member 31 and the second plate member 32 protrudes outward to form a bracket portion 33, a plurality of mounting holes 331 are opened on the bracket portion 33, and the thickness of the bracket portion 33 where the mounting holes are opened is greater than the thickness where the mounting holes are not opened.

[0022] In order to achieve lightweighting while ensuring structural strength, the utility model further optimizes the structure of the side panel mounting bracket of the module side panel on the basis of the prior art. The side panel mounting bracket is connected to the battery pack box by bolts. The side panel mounting bracket in the prior art is usually formed by a complete plate, while the utility model proposes to design the side panel mounting bracket into two parts, upper and lower. Both parts can be made of lighter and thinner materials than the prior art. The two parts are respectively connected to the side panel body to ensure the strength of the connection structure. The connection between the two parts protrudes outward to form a bracket part, which is used to connect to the battery pack box. The bracket part formed by the first plate and the second plate can also be designed to be a thinner material than the prior art to achieve lightweighting. In order to meet the strength requirements on the basis of lightweighting and avoid stress concentration, the contact part of the mounting bracket with the bolt, that is, the mounting hole, is locally thickened.

[0023] The mounting holes 331 are evenly distributed on the bracket portion 33 at equal intervals to facilitate connection with the box body.

[0024] In order to further reduce weight, the bracket part adopts an interval protrusion design, including a plurality of intervally distributed protrusions 332 and grooves 333, each mounting hole 331 is correspondingly arranged at the protrusion 332, and the protrusion 332 is locally thickened, and the thickness is greater than the thickness at the groove 333.

[0025] In addition, to avoid stress concentration, a mounting gasket 4 is also designed corresponding to each mounting hole 331, which is used to disperse the stress to the entire bracket when bolted, so as to prevent stress concentration from causing structural failure. The mounting gasket 4 can be designed to be circular, square or other shapes according to actual needs, and a through hole is opened in the middle of the mounting gasket 4, the inner diameter of which is equal to the mounting hole and matches the bolt.

[0026] The first plate 31 and the second plate 32 are both formed by bending a single layer of plate. The structures of the first plate 31 and the second plate 32 are preferably designed to be the same for ease of production and processing. The first plate 31 is produced by bending twice, and includes a first bending portion 311, a second bending portion 312 and a third bending portion 313, wherein the first bending portion 311 is used to be fixedly connected to the side plate body 1, the second bending portion 312 is located between the first bending portion 311 and the third bending portion 313, and the third bending portion 313 is used to be fixedly connected to the second plate 32 to form a bracket portion 33. The second plate 32 has the same structure as the first plate 31, and will not be described here.

[0027] The third bends of the first plate 31 and the second plate 32 are welded together to enhance the support strength, and the first bends 311 of the two parts are respectively welded to the sheet metal side plate body, and the second bends 312 form a triangular support structure to ensure structural strength. Thus, the strength requirements can be met while using lightweight materials.

[0028] Both sides of the side panel body 1 have a connecting portion 11 bent inwards, and the bottom of the side panel body also has a first supporting portion 12 bent inwards, and the connecting portion 11 and the first supporting portion 12 are both bent vertically toward the direction of the battery cell. The bottom of the lining plate 2 correspondingly has a second supporting portion 21, and the second supporting portion 21 is also bent vertically toward the direction of the battery cell. The connecting portion 11 is processed by sheet metal, and a plurality of rivet connection holes are provided on the connecting portion, which is connected to the end plate through the rivet connection holes. A first supporting portion is provided at the bottom of the side panel body for supporting the battery cell and also for supporting the lining plate. A second supporting portion is correspondingly designed at the bottom of the lining plate 2 so as to be fixedly connected to the side panel body and receive support from the side panel body to ensure the connection stability between the two.

[0029] The lining plate 2 is a composite material lining plate, which has a lower density than the side plate body 1, and can reduce weight while ensuring strength; the composite material lining plate can also avoid direct metal contact between the battery cell and the side plate body 1, reducing the risk of insulation failure; the composite material lining plate has a better heat insulation effect than metal materials, and can also better prevent heat diffusion. The side plate body and the lining plate are connected together by hot pressing to form a double-layer structure side plate.

[0030] Embodiment 2

[0031] Based on the first embodiment, this embodiment further provides a battery module, which includes a plurality of battery cells, two module side plates provided in the first aspect, two end plates and a bottom plate. The module side plates, the end plates and the bottom plate are fixedly connected to form a cavity to accommodate the battery cells; the module side plates and the end plates surround the outside of the battery cells, the two module side plates are arranged opposite to each other, and the two end plates are arranged opposite to each other; the bottom plate is arranged at the bottom of the battery cells.

[0032] Embodiment 3

[0033] Based on the second embodiment, this embodiment further provides a battery pack, including a box body and at least one battery module provided in the second embodiment. A mounting beam is provided inside the box body, and the mounting beam has bolt holes corresponding to the battery module. The battery module is fixedly connected to the mounting beam through the side plate mounting bracket on the module side plate, and the battery module is fixedly connected to the battery pack by bolt connection.

[0034] Embodiment 4

[0035] This embodiment further provides a vehicle based on the third embodiment. The vehicle is a hybrid vehicle or a pure electric vehicle. The vehicle includes a battery pack provided in the third embodiment to provide electrical energy for the vehicle.

[0036] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A module side panel, characterized in that: It includes a side panel body, a lining plate and a side panel mounting bracket, wherein the lining plate is arranged on the side of the side panel body facing the battery cell, and the side panel mounting bracket is arranged on the side of the side panel body facing away from the battery cell. The side panel mounting bracket includes a first plate member and a second plate member, and the connection between the first plate member and the second plate member protrudes outward to form a bracket portion, and a plurality of mounting holes are opened on the bracket portion. The thickness of the bracket portion where the mounting holes are opened is greater than the thickness where the mounting holes are not opened.

2. A module side panel as claimed in claim 1, characterized in that: The mounting holes are distributed on the bracket part at equal intervals.

3. A module side plate as claimed in claim 2, characterized in that: The bracket part includes a plurality of protrusions and grooves distributed at intervals, each mounting hole is arranged at the protrusion, and the thickness at the protrusion position is greater than the thickness at the groove position.

4. A module side plate as claimed in claim 1, characterized in that: It also includes a plurality of mounting gaskets, the number of which is equal to the number of mounting holes, a through hole is opened in the middle of the mounting gasket, and the specification of the through hole matches the specification of the mounting hole.

5. A module side panel as claimed in claim 1, characterized in that: The first plate member includes a first bending portion, a second bending portion and a third bending portion, the first bending portion is fixedly connected to the side plate body, the second bending portion is connected between the first bending portion and the third bending portion, and the third bending portion is used to be fixedly connected to the second plate member to form a bracket portion.

6. A module side plate as claimed in claim 5, characterized in that: The first plate member and the second plate member have the same shape.

7. A module side plate as claimed in claim 1, characterized in that: The side plate body has connecting parts on both sides, and the bottom of the side plate body has a first supporting part, and the connecting part and the first supporting part are both bent vertically toward the battery cell; the bottom of the lining plate has a second supporting part, and the second supporting part is bent vertically toward the battery cell.

8. A battery module, characterized in that: It comprises a plurality of battery cells, two module side plates as described in any one of claims 1 to 7, two end plates and a bottom plate, wherein the module side plates, the end plates and the bottom plate are fixedly connected to accommodate the battery cells; the module side plates and the end plates are arranged around the outside of the battery cells, the two module side plates are arranged opposite to each other, and the two end plates are arranged opposite to each other; the bottom plate is arranged at the bottom of the battery cells.

9. A battery pack, characterized in that: It comprises a box body and at least one battery module as claimed in claim 8, wherein a mounting beam is arranged inside the box body, and the battery module is fixedly connected to the mounting beam via a side panel mounting bracket on a module side panel.

10. A vehicle, characterized in that: The vehicle comprises a battery pack as claimed in claim 9.

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