CN219419330U - End plate structure and battery module - Google Patents

Abstract

The utility model provides an end plate structure and a battery module, and relates to the field of battery processing and manufacturing. The end plate structure comprises a bottom plate, a supporting plate and two fixing plates, wherein the bottom plate comprises a body and a bending part, the bending part is arranged on the side edge of the body, the supporting plate is welded to the middle part of the body and is welded with the bending part, and the fixing plates are welded to the two sides of the body and are welded with the bending part. The bending part is arranged on the body, and the supporting plate is arranged in the middle of the body and is connected with the bending part, so that the deformation of the body and the middle of the bending part is limited; the fixing plates are arranged on two sides of the body and connected with the bending parts, so that deformation of the body and two sides of the bending parts is limited. Therefore, the whole end plate structure is not easy to deform, the consistency of the installation of the whole battery module is improved, the qualification rate of the processing of the battery module is ensured, and poor appearance is prevented.

Description

End plate structure and battery module

Technical Field

The utility model relates to the field of battery processing and manufacturing, in particular to an end plate structure and a battery module.

Background

Because of the limitation of factors such as technology and materials, the electric performance parameters such as the electric quantity, voltage and the like of a single battery often cannot meet the use requirements of large electric equipment such as an electric vehicle and the like, and therefore, a battery module formed by connecting a plurality of batteries in parallel or in series is produced. The battery module mainly comprises a plurality of batteries and a fixing component for fixing the batteries, wherein the common fixing component comprises a frame formed by welding a plurality of plates, a binding structure formed by end plates and fixing belts, and the like.

In the prior art, the end plate is easy to deform due to the expansion acting force after the battery is compressed in the mounting process, and the battery module is difficult to align with an external mounting hole in the mounting process, so that the mounting defect and the disqualification of the appearance of the whole battery module are caused.

Disclosure of Invention

In order to overcome the defect that the end plate is easy to deform in the prior art, the application provides an end plate structure and a battery module.

The application provides an end plate structure, including bottom plate, backup pad and two fixed plates, the bottom plate includes body and kink, the kink is located the side of body, the backup pad weld in body middle part and with kink welded connection, the fixed plate weld in body both sides and with kink welded connection.

In one possible implementation manner, the bending part is provided with a mounting hole, and the mounting hole is an elongated hole.

In one possible implementation manner, the supporting plate includes a supporting body and two connecting portions, the two connecting portions are respectively disposed on two sides of the supporting body, the connecting portions connect the body with the bending portion, and the supporting body connects with the bending portion.

In one possible embodiment, the support body is provided with a lifting hole.

In one possible implementation manner, the supporting plate further comprises a guiding part, the guiding part is arranged on the supporting body and opposite to the connecting part, the guiding part is connected with the body and the bending part, and a guiding groove is formed between the guiding part and the corresponding connecting part.

In one possible embodiment, the bottom plate includes two bending portions, and the two bending portions are oppositely disposed on two opposite sides of the body.

In one possible implementation manner, the bottom plate further comprises a fixing portion, the fixing portion is arranged on the bending portion, and a fixing hole is formed in the fixing portion.

In one possible embodiment, a stopper is provided on the fixing plate.

In one possible embodiment, the bottom plate, the support plate and the fixing plate are all formed by bending sheet metal parts.

The application also provides a battery module, which comprises a plurality of batteries, a steel belt and the end plate structure.

Compared with the prior art, the beneficial effect of this application:

according to the end plate structure and the battery module, the bending part is arranged on the body, and the supporting plate is welded to the middle part of the body and is welded with the bending part, so that deformation of the middle parts of the body and the bending part is limited; the fixing plates are welded on two sides of the body and are welded with the bending parts, so that deformation of the body and two sides of the bending parts is limited. Therefore, the whole end plate structure is not easy to deform, the end plate structure cannot deviate among all connecting plates in the using process, the mounting consistency of the whole battery module is improved, the processing qualification rate of the battery module is ensured, and poor appearance is prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic structural view of an end plate structure according to an embodiment of the present application;

FIG. 2 illustrates a schematic view of an end plate structure from another perspective according to one embodiment of the present application;

FIG. 3 illustrates a partially exploded schematic view of the endplate structure of FIG. 1;

fig. 4 is a schematic view showing the structure of a battery module according to an embodiment of the present application.

Description of main reference numerals:

100-end plate structure; 10-a bottom plate; 11-a body; 12-bending part; 121-mounting holes; 13-a fixing part; 131-fixing holes; 20-supporting plates; 21-a support body; 211-lifting holes; 22-connecting part; 23-a guide; 231-guide slots; 232-a viewing aperture; 30-fixing plates; 31-fixing the body; 311-limiting blocks; 32-extensions; 200-battery module; 201-steel strip; 202-bracket.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, 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. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Example 1

Referring to fig. 1 and 4, an embodiment of the present application provides an end plate structure 100. The end plate structure 100 is applied to the battery module 200 to fix both ends of the battery module 200. The deformation of the end plate structure 100 is small, the consistency of the appearance of the battery module 200 after being installed can be ensured, and the qualification rate of the battery module 200 during processing is improved.

Referring to fig. 2, the end plate structure 100 includes a bottom plate 10, a support plate 20, and two fixing plates 30. The bottom plate 10 is used for contacting with the battery so as to support and limit the battery. The support plate 20 and the fixing plate 30 are both disposed on a surface of the bottom plate 10 facing away from the battery. The support plate 20 serves to support the middle portion of the base plate 10, thereby preventing the base plate 10 from being deformed. The fixing plates 30 are disposed at both sides of the support plate 20. The fixing plate 30 serves to support both sides of the base plate 10, thereby preventing the base plate 10 from being deformed.

Specifically, referring to fig. 3, the bottom plate 10 includes a main body 11 and a bending portion 12. The body 11 is plate-shaped. The bending part 12 is arranged at the side edge of the body 11. The bent portion 12 is also plate-shaped. The bending part 12 is perpendicular to the body 11.

The support plate 20 is disposed in the middle of the body 11 and connected to the bending portion 12, so as to limit deformation of the body 11 and the middle of the bending portion 12.

The fixing plates 30 are disposed at two sides of the body 11 and connected to the bending portion 12, so as to limit deformation of the body 11 and the bending portion 12.

The bending part 12 is provided with a mounting hole 121. The mounting holes 121 are used for passing through screws or the like to fix the base plate 10, thereby mounting the battery module 200.

In some embodiments, the mounting hole 121 is an elongated hole. The mounting hole 121 extends in a direction perpendicular to the body 11. The mounting holes 121 of the elongated holes may be adjusted in mounting position according to the actual size of the battery module 200, so that the range of the length dimension of the module may be properly widened.

In some embodiments, the body 11 and the bending portion 12 are integrally formed. The bending part 12 may be formed on the body 11 by bending a plate. But not limited thereto, the bending portion 12 may be connected to the body 11 by welding.

In some embodiments, the base plate 10 includes two bends 12. The two bending parts 12 are oppositely arranged at two opposite sides of the body 11.

In some embodiments, the base plate 10 further comprises a securing portion 13. The fixing portion 13 is disposed on the bending portion 12. The fixing portion 13 is also plate-shaped. The fixing portion 13 is perpendicular to the bending portion 12. The fixing part 13 serves to fix the bracket of the battery module 200, thereby facilitating the welding installation of, for example, aluminum bars.

The fixing portion 13 is provided with a fixing hole 131. The fixing holes 131 are used for passing through fixing members such as screws to fix the bracket on the battery module 200.

The fixing portion 13 is provided with two fixing holes 131. The two fixing holes 131 are also elongated holes so that the brackets mounted thereon can be adjusted according to the actual demands of the battery module 200.

In some embodiments, the base plate 10 includes two securing portions 13. The two fixing portions 13 are disposed on the same bending portion 12 and are disposed opposite to each other.

In some embodiments, the body 11, the bending portion 12 and the fixing portion 13 are integrally formed. The fixing portion 13 is formed on the bending portion 12 by bending a plate material.

The support plate 20 is generally U-shaped. The support plate 20 includes a support body 21 and two connection portions 22. The support body 21 is plate-shaped. The two connecting portions 22 are respectively disposed on two sides of the supporting body 21. The connecting portion 22 is also plate-shaped. The connection portion 22 is perpendicular to the support body 21. The connecting portion 22 connects the main body 11 and the bending portion 12. The supporting body 21 is connected to the bending portion 12.

Specifically, one side of the connecting portion 22 away from the supporting body 21 is welded to the body 11, and two ends of the connecting portion 22 are respectively welded to a corresponding one of the bending portions 12. Both ends of the supporting body 21 are welded to a corresponding one of the bending portions 12, respectively, so as to form a hollow rectangular frame.

The supporting body 21 is provided with a lifting hole 211. The lifting holes 211 are used for allowing a lifting tool to pass through so as to lift the battery module 200, thereby facilitating movement of the assembled battery module 200 and saving labor.

In some embodiments, the support body 21 is provided with two lifting holes 211, and the two lifting holes 211 are symmetrically arranged in the middle of the support body 21. The lifting hole 211 adopts a round hole with the diameter of 10mm, so that the selection of a lifting tool is facilitated.

In some embodiments, the support body 21 and the two connecting portions 22 are integrally formed. The two connection portions 22 are formed on the supporting body 21 by bending two sides of the plate respectively. But not limited thereto, the connection portion 22 may be connected to the support body 21 by welding.

In some embodiments, the mounting holes 121 are located between the connection parts of the two connection parts 22 and the bent parts 12 so as to pass through the hollow frame formed by the support plate 20 and the bottom plate 10 using screws or the like for mounting and fixing the battery module 200.

Preferably, the support plate 20 further includes a guide 23. The guide portion 23 is provided on the support body 21 and faces the connection portion 22. The guide portion 23 has a plate shape. The guide 23 is perpendicular to the support body 21. The guide portion 23 connects the main body 11 and the bending portion 12. A guide groove 231 is formed between the guide portion 23 and the corresponding connection portion 22. The guide groove 231 is used for guiding the screw inserted into the mounting hole 121, so as to limit the mounting position of the screw, and the screw can be quickly and accurately matched with an external mounting hole in the mounting process of the module, so that the mounting time of the module is saved.

The guide portion 23 is further provided with a viewing hole 232. The observation hole 232 is located at one end of the guiding portion 23 near the bending portion 12. The observation hole 232 is used for an operator to observe when the screw passes through, so that the screw is convenient to install.

In some embodiments, the support body 21, the connecting portion 22, and the guiding portion 23 are integrally formed. The guide portion 23 is formed on the support body 21 by bending a plate material.

The fixing plate 30 is also U-shaped. The fixing plate 30 includes a fixing body 31 and two extending portions 32. The fixing body 31 is plate-shaped. The two extending portions 32 are respectively disposed on two sides of the fixing body 31. The extension 32 is also plate-shaped. The extension 32 is perpendicular to the fixed body 31. The extension portion 32 connects the main body 11 and the bending portion 12. The fixing body 31 is connected to the bending portion 12.

Specifically, one side of the extending portion 32 away from the fixing body 31 is welded to the body 11, two ends of the extending portion 32 are respectively welded to a corresponding one of the bending portions 12, one side of one of the extending portions 32 is welded to a side edge of the body 11, and two ends of the extending portion are respectively welded to a side edge of a corresponding one of the bending portions 12. The two ends of the fixing body 31 are welded to a corresponding one of the bending portions 12.

The bottom plate 10, the support plate 20 and the two fixing plates 30 are all fixed by adopting a welding mode, so that the connection of the end plate structure 100 is hard connection, and in the use process, the relative deviation of each connecting plate can not occur, and the problem of poor installation is caused.

The fixed body 31 is provided with a limiting block 311. The limiting block 311 is used for limiting the winding position of the steel belt and the like when the steel belt and the like are bound and wound, so as to prevent the steel belt and the like from being separated.

In some embodiments, four limiting blocks 311 are disposed on the fixed body 31. Four limiting blocks 311 are disposed at two ends of the fixed body 31, respectively, so as to limit two steel belts disposed up and down.

In some embodiments, the thickness of the limiting block 311 is 2mm, which can limit the steel belt and prevent the steel belt from protruding into the battery module 200 to cause interference.

In some embodiments, the fixing body 31 and the two extending portions 32 are integrally formed. The two extending portions 32 are respectively formed on the fixing body 31 by bending two sides of the plate. But not limited thereto, the extension 32 may be further connected to the fixing body 31 by welding.

In some embodiments, the bottom plate 10, the support plate 20 and the two fixing plates 30 are all formed by bending sheet metal parts, so that the processing is facilitated.

The end plate structure 100 is provided with a bending portion 12 vertically arranged on the body 11, and the support plate 20 is arranged in the middle of the body 11 and connected with the bending portion 12, so as to limit the deformation of the middle of the body 11 and the bending portion 12; the fixing plates 30 are provided on both sides of the body 11 and connected to the bending portion 12, thereby restricting deformation of both sides of the body 11 and the bending portion 12. Thereby making the entire end plate structure 100 not easily deformed, improving the consistency of the installation of the entire battery module 200, ensuring the qualification rate of the processing of the battery module 200, and preventing the appearance from being bad.

Example two

Referring to fig. 1 to 4, a battery module 200 according to the present embodiment includes a plurality of batteries, two end plate structures 100 and a steel belt 201. The end plate structure 100 is the end plate structure 100 according to the first embodiment.

The plurality of cells are stacked one on another. The two end plate structures 100 are respectively disposed at two sides of the plurality of stacked cells along the stacking direction. The steel strips 201 are sleeved outside the two end plate structures 100.

When the battery module 200 is assembled, the end plate structure 100 and the battery are stacked, and then the module is compressed, and then the steel belt 201 is sleeved on the fixing plate 30 and arranged between a group of two limiting blocks 311; after the compression is released, the battery is restored to a natural state, the steel belt 201 is clamped on the fixed plate 30 under the action of the expansion force of the battery restoration, and the steel belt 201 is prevented from being separated from the module due to the limiting effect of the limiting block 311.

The fixing part 13 is also fixedly provided with a bracket 202 through a fixing piece.

The battery module 200 has the advantages that the design structure of the end plate structure 100 is not easy to deform in assembly, so that when the specifications of the selected steel belts 201 are consistent, the consistent size of the battery module 200 after installation can be ensured, the qualification rate of the battery module 200 during processing is ensured, and poor appearance caused by deformation is prevented.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The utility model provides an end plate structure, its characterized in that includes bottom plate, backup pad and two fixed plates, the bottom plate includes body and kink, the kink is located the side of body, the backup pad weld in body middle part and with kink welded connection, the fixed plate weld in body both sides and with kink welded connection.

2. The end plate structure of claim 1, wherein the bending portion is provided with a mounting hole, and the mounting hole is a strip-shaped hole.

3. The end plate structure according to claim 2, wherein the support plate includes a support body and two connection portions, the two connection portions are respectively disposed on two sides of the support body, the connection portions connect the body and the bending portion, and the support body is connected with the bending portion.

4. An end plate structure according to claim 3, wherein the support body is provided with a lifting hole.

5. An end plate structure according to claim 3, wherein the support plate further comprises a guide portion, the guide portion is disposed on the support body and opposite to the connection portion, the guide portion connects the body and the bending portion, and a guide groove is formed between the guide portion and the corresponding connection portion.

6. The end plate structure of claim 1, wherein the bottom plate includes two bending portions, and the two bending portions are disposed opposite to each other on opposite sides of the body.

7. The end plate structure according to claim 1, wherein the bottom plate further comprises a fixing portion provided on the bending portion, and a fixing hole is provided on the fixing portion.

8. The end plate structure according to claim 1, wherein a stopper is provided on the fixing plate.

9. The end plate structure according to claim 1, wherein the bottom plate, the support plate and the fixing plate are formed by bending sheet metal parts.

10. A battery module comprising a plurality of cells, a steel strip, and an end plate structure according to any one of claims 1-9.