Battery module end plate

Abstract

The utility model discloses a battery module end plate and aims to overcome the defect that a hoisting position is difficult to use due to high cost and high difficulty of a longitudinal opening of an existing die-casting battery module end plate. The roller comprises roller bodies on the two sides and a plate body between the two roller bodies, the roller bodies and the plate body are of an integrated structure, hoisting holes are formed in the roller bodies, the hoisting holes are formed in the normal direction of the plate body and penetrate through the roller bodies, and the hoisting holes are formed in the upper portions and the lower portions of the roller bodies. And the hoisting holes are formed in the normal direction of the plate body and penetrate through the roller body, so that the complexity of mold design is reduced, and hoisting is easy to carry out in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electricity storage, more specifically, it relates to a battery module end plate. BACKGROUND

[0002] The battery cell is connected in series or parallel through an aluminum row, is controlled and managed through a BMS, is constrained through a steel band in physics, has a battery module end plate at both ends of the battery module formed by the battery cell, the battery module end plate is pressed tightly during production, and the steel band is wound on the outside.

[0003] In the battery module, the end plate is an important component for realizing hoisting, fixing, electrical connection and other functions of the battery module, and ensures the stability and safety of the module during the working process. The end plate material is generally aluminum alloy, located at both ends of the module, and can resist the expansion of the battery cell, stabilize the cell spacing and ensure the stability of the electrical connection during the working process of the battery module. In addition, the end plate has good electrical conductivity and is also a key component for ensuring the equipotential and grounding safety of the modules in the battery pack.

[0004] The existing aluminum alloy end plate forming process is mainly divided into extruded profiles and die casting. The extruded profiles are widely used, the mold is simple, but the plasticity is low, the material is more, the cost is high, the positioning of the module steel band is difficult to realize and needs post-processing for use. The die-casting end plate is integrally formed, has high plasticity, less corner burrs, and can be directly used after forming, and has great advantages in mass production. However, the current die-casting aluminum alloy end plate is difficult to open longitudinally, making it difficult to hoist after the battery module is assembled. SUMMARY

[0005] The utility model overcomes the insufficient of the existing die-casting battery module end plate due to high cost and difficulty of longitudinal opening, which makes the hoisting position difficult to use, and provides a battery module end plate which can improve this deficiency and make the die-casting battery module end plate easy to hoist.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A battery module end plate, comprising two rollers and a plate body between the two rollers, the roller and the plate body are integrated structure, the roller is provided with a lifting hole, the lifting hole is arranged along the normal direction of the plate body and the lifting hole penetrates the roller, the upper part and the lower part of the roller are provided with the lifting hole.

[0008] The roller body and the plate body are produced by pressure casting, the material is aluminum alloy, the lifting hole on the roller body is arranged along the normal direction, the structure can be easily realized by the mold closing of the upper mold and the lower mold in the pressure casting process, the complexity of the mold design is reduced, the design of the lifting hole penetrating makes the lifting device have more contact area with the end plate of the mold set, and the complexity of lifting is reduced. The structure of arranging the lifting hole on the upper part and the lower part can make the lifting more stable.

[0009] As preferred, the bottom of the roller body is provided with a positioning hole, and the positioning hole is a waist-shaped counterbore, so that the installation and fixation of the mold set are more accurate, and the damage of the bottom heat-conducting gel layer caused by repeated lifting and installation is reduced.

[0010] As preferred, the positioning hole penetrates the roller body along the height direction. The structure realizes the lightweight of the roller body.

[0011] As preferred, the top of the end plate is provided with a mounting notch for mounting an insulating seat of a battery module, and an active gap is arranged between the mounting notch and the insulating seat. The feature makes the electrode lead-out installation of the mold set more flexible.

[0012] As preferred, the roller body is provided with a steel belt buckle extending along the normal direction of the plate body, and the upper part and the lower part of the roller body are both provided with the steel belt buckle. The steel belt buckle is used for limiting the steel belt, preventing the steel belt from being displaced and falling off due to vibration or cell expansion, thereby improving the stability and safety of the mold set.

[0013] As preferred, the steel belt buckle includes an upper buckle and a lower buckle, and the upper buckle and the lower buckle are both provided with a limiting wall, and the two limiting walls form a limiting groove with a width suitable for the steel belt.

[0014] As preferred, a plurality of reinforcing columns are arranged on the plate body, and transverse, longitudinal or diagonal reinforcing ribs are arranged between the reinforcing columns. The areas outside the reinforcing columns and the reinforcing ribs are hollowed out to leave a thin wall. The structure realizes the lightweight of the plate body.

[0015] As preferred, the roller body is provided with a plurality of weight-reducing holes including the lifting hole on the front and back surfaces of the plate body, the weight-reducing holes are communicated with the positioning hole, and the adjacent weight-reducing holes on the front and back surfaces have a part overlap in the normal projection of the plate body. The structure further realizes the lightweight of the roller body and reduces the amount of aluminum alloy.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] (1) The lifting hole is arranged along the normal direction of the plate body and penetrates the roller body, the complexity of the mold design is reduced, and the lifting is easy to carry out in the use process;

[0018] (2) The plate body and the roller body are hollowed out and holed, the lightweight of the end plate of the battery module is realized, and the amount of aluminum alloy is reduced. Attached Figure Description

[0019] Figure 1 This is an isometric drawing of this utility model;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 This is a rear view of the present invention;

[0022] Figure 4 This is a side view of the present invention;

[0023] Figure 5 This is a bottom view of the present invention;

[0024] In the picture:

[0025] Roller body 1, plate body 2, lifting hole 3, positioning hole 4, mounting groove 5, steel belt buckle 6, upper buckle 61, lower buckle 62, reinforcing column 7, reinforcing rib plate 8, weight reduction hole 9. Detailed Implementation

[0026] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] In this disclosure, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements in this disclosure, and do not specifically refer to any component or element in this disclosure, nor should they be construed as limiting this disclosure.

[0030] In the present disclosure, terms such as "fixedly connected", "connected", "connected" and the like should be broadly understood, which can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in the art, the specific meaning of the above terms in the present disclosure can be determined according to the specific circumstances, and cannot be understood as a limitation on the present disclosure.

[0031] Embodiments:

[0032] A battery module end plate, as shown in Figures 1 to 5 , including two roller bodies 1 and a plate body 2 between the two roller bodies 1, the roller body 1 and the plate body 2 are integrated structure, the wide side of the plate body 2 connects the side of the roller body 1, the roller body 1 is provided with lifting hole 3, the lifting hole 3 is arranged along the normal direction of the plate body 2 and the lifting hole 3 penetrates the roller body 1, the upper and lower parts of the roller body 1 are provided with the lifting hole 3.

[0033] , as shown in Figure 5 , the bottom of the roller body 1 is provided with a positioning hole 4, the positioning hole 4 is a waist-shaped counterbore, so that the installation of the module is more accurate, and the damage of the bottom heat-conducting gel layer caused by repeated lifting and installation is reduced. The positioning hole 4 penetrates the roller body 1 along the height direction. The structure realizes the lightweight of the roller body 1.

[0034] , as shown in Figure 2 , the top of the end plate is provided with a mounting slot 5 for mounting an insulating seat of a battery module, and an active gap is provided between the mounting slot 5 and the insulating seat. The feature makes the electrode lead-out installation of the module more flexible.

[0035] , as shown in Figure 4 , the roller body 1 is provided with a steel belt buckle 6 extending along the normal direction of the plate body 2, and the upper and lower parts of the roller body 1 are provided with the steel belt buckle 6. The steel belt buckle 6 is used for limiting the steel belt to prevent the steel belt from falling off due to vibration or cell expansion, thereby improving the stability and safety of the module. The steel belt buckle 6 includes an upper buckle 61 and a lower buckle 62, and the upper buckle 61 and the lower buckle 62 are provided with limiting walls, and the limiting walls are surrounded to form a limiting groove adapted to the width of the steel belt.

[0036] , as shown in Figure 1 , 2 , the plate body 2 is provided with a plurality of reinforcing columns 7, and the reinforcing columns 7 are provided with transverse, longitudinal or diagonal reinforcing rib plates 8. The area outside the reinforcing columns 7 and the reinforcing rib plates 8 is hollowed out to leave a thin wall. The structure realizes the lightweight of the plate body 2. Figure 3As shown, the roller body 1 is provided with a plurality of lightening holes 9 including the lifting hole 3 on the front and back surfaces of the plate body 2, the lightening holes 9 are communicated with the positioning holes 4, and the adjacent lightening holes 9 on the front and back surfaces have partially overlapped normal projections on the plate body 2. The structure further realizes the light weight of the roller body 1 and reduces the amount of aluminum alloy.

[0037] The roller body 1 and the plate body 2 are produced by pressure casting and are made of aluminum alloy, the lifting hole 3 on the roller body 1 is arranged along the normal direction, the structure can be easily realized by the mold closing of the upper mold and the lower mold in the pressure casting process, the complexity of the mold design is reduced, the design that the lifting hole 3 penetrates makes the lifting device have more contact area with the end plate of the mold set, the complexity of the lifting is reduced, and the structure that the lifting hole 3 is arranged on the upper part and the lower part can make the lifting more stable.

[0038] The above-mentioned embodiments are only preferred schemes of the present application and do not limit the present application in any form, and other variants and modifications can be made without exceeding the technical schemes recited in the claims.

Claims

1. A battery module end plate, characterized by, The roller body and the plate body are integrally formed, the roller body is provided with a lifting hole, the lifting hole is arranged along the normal direction of the plate body and penetrates the roller body, and the upper part and the lower part of the roller body are both provided with the lifting hole.

2. The battery module end plate of claim 1, wherein, The bottom of the roller body is provided with a positioning hole, and the positioning hole is a waist-shaped counterbore.

3. The battery module end plate of claim 2, wherein, The positioning hole penetrates the roller body along the height direction.

4. The battery module end plate of claim 1, wherein, The top of the end plate is provided with a mounting notch for mounting an insulating seat of a battery module, and an active gap is arranged between the mounting notch and the insulating seat.

5. The battery module end plate of claim 1, wherein, The roller body is provided with a steel belt buckle extending along the normal direction of the plate body, and the upper part and the lower part of the roller body are both provided with the steel belt buckle.

6. A battery module end plate according to claim 5, wherein The steel belt buckle includes an upper buckle and a lower buckle, and the upper buckle and the lower buckle are both provided with a limiting wall, and the two limiting walls form a limiting groove with a width suitable for the steel belt.

7. The battery module end plate of claim 1, wherein, The plate body is provided with a plurality of reinforcing columns, and the reinforcing columns are provided with transverse, longitudinal or diagonal reinforcing rib plates.

8. The battery module end plate of claim 7, wherein, The roller body is provided with a plurality of weight-reducing holes including the lifting hole on the front and back surfaces of the plate body, the weight-reducing holes are communicated with the positioning hole, and the adjacent weight-reducing holes on the front and back surfaces have a partially overlapped normal projection on the plate body.

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