End plate assembly, battery module and battery pack

Abstract

The utility model discloses an end plate assembly, a battery module and a battery pack. The end plate assembly comprises an end plate body and a module output electrode, the module output electrode is arranged on the end plate body and is integrated with the end plate body. According to the end plate assembly provided by the utility model, the structure of the end plate assembly is stable and reliable, the assembly process can be simplified, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

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

[0002] In the related technologies, as the current social energy crisis becomes increasingly serious, the new energy industry has received global attention and rapid development, and various consumer groups are paying more and more attention to new energy vehicles and their comprehensive performance. Among them, the production and cost of power batteries have become important factors restricting the development of electric vehicles. The end plate of the battery module, as the fixed end of the positive and negative output terminals, is an important component for fixing the battery cell and ensuring the cycle performance of the battery cell. The end plates, output electrode conductive bars, fixed structures of the liquid cooling plates, and equipotential structures of the existing battery modules are mostly independent parts. The cumbersome assembly process leads to low production efficiency. At the same time, the stability of the battery module structure will also be affected by the assembly quality. In addition, the increase in personnel and process costs reduces the production rhythm, resulting in an increase in the overall cost of battery modules and battery packs. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an end plate assembly, the structure of which is stable and reliable, and can simplify the assembly process and improve production efficiency while reducing production costs.

[0004] The utility model also provides a battery module, which includes the above-mentioned end plate assembly.

[0005] The utility model also provides a battery pack, which includes the above-mentioned battery module.

[0006] The end plate assembly of the battery module according to the embodiment of the utility model comprises an end plate body and a module output pole. The module output pole is arranged on the end plate body and is an integral part with the end plate body.

[0007] According to the end plate assembly of the battery module of the embodiment of the utility model, by directly arranging the module output pole on the end plate body and connecting it with the end plate body as an integral part, it is possible to ensure the stability and reliability of the structure while simplifying the assembly process of the end plate assembly, thereby improving production efficiency and reducing production costs.

[0008] According to some embodiments of the present invention, the module output pole is connected to the end plate body by a hot riveting process.

[0009] In some embodiments of the utility model, a through hole is provided on the module output pole, a fixing column is provided on the end plate body, the fixing column is passed through the through hole, a limiting portion is provided at the free end of the fixing column, and the limiting portion is located on the outside of the module output pole, and is used to limit the module output pole from falling off the fixing column.

[0010] According to some embodiments of the present invention, the end plate assembly of the battery module further includes a bushing, which is embedded in the end plate body and extends along the width direction of the end plate for fixing the battery module.

[0011] In some embodiments of the present invention, the bushing and the end plate body are integrally formed by an injection molding process; and / or the bushing is a plurality of bushings spaced apart along the length direction of the end plate body.

[0012] According to some embodiments of the present invention, the end plate assembly of the battery module further includes an equipotential structure, and the equipotential structure is embedded in the end plate body.

[0013] In some embodiments of the utility model, the equipotential structure and the end plate body are integrally formed by an injection molding process; and / or the equipotential structure is a plurality of structures spaced apart along the length direction of the end plate body; and / or the equipotential structure extends along the width direction of the end plate body, and the equipotential structure has mounting holes connected to the cold plate at both ends along the width direction of the end plate body, or the equipotential structure includes two substructures located at both ends of the end plate body in the width direction, and the two substructures are respectively provided with mounting holes connected to the cold plate.

[0014] According to some embodiments of the present invention, the end plate assembly of the battery module further includes a low-voltage plug-in, and the low-voltage plug-in is riveted to the end plate body.

[0015] A battery module according to an embodiment of the utility model includes: the above-mentioned end plate assembly.

[0016] According to the battery module of the embodiment of the utility model, the module output pole of the end plate assembly is directly arranged on the end plate body and connected thereto as an integral part, which can ensure the structural stability and reliability of the battery module while simplifying the assembly process of the battery module, improving production efficiency and reducing production costs.

[0017] A battery pack according to an embodiment of the present invention includes: the above-mentioned battery module.

[0018] According to the battery pack of the embodiment of the utility model, the module output pole of the end plate assembly is directly arranged on the end plate body and connected thereto as an integral part, which can ensure the structural stability and reliability of the battery pack while simplifying the assembly process of the battery pack, improving production efficiency and reducing production costs.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a stereoscopic view of an end plate assembly according to an embodiment of the utility model;

[0022] Figure 2 It is an exploded view of a battery module according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100, end plate assembly;

[0025] 1. End plate body;

[0026] 2. Module output pole; 21. Limiting part;

[0027] 3. Bushing;

[0028] 4. Equipotential structure; 41. Mounting hole;

[0029] 5. Low voltage plug-in;

[0030] 200. Battery module;

[0031] 6. Cold plate. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Reference below Figure 1 and Figure 2 The end plate assembly 100 of the battery module 200 according to the embodiment of the present invention is described.

[0036] like Figure 1 and Figure 2 As shown, the end plate assembly 100 of the battery module 200 according to the embodiment of the utility model includes an end plate body 1 and a module output pole 2.

[0037] Specifically, Figure 1 As shown, the module output pole 2 is arranged on the end plate body 1 and is an integral part with the end plate body 1. The module output pole 2 can be connected to the end plate body 1 by a hot riveting process or embedded in the end plate body 1, which can ensure the stability and reliability of the structure. On the one hand, the integrated design optimizes the product structure, simplifies the assembly process of the end plate assembly 100, reduces the number of parts and assembly steps that need to be assembled, and makes the assembly process of the end plate assembly 100 and the battery module 200 more efficient. On the other hand, the module output pole 2 is directly connected to the end plate body 1, eliminating additional connecting elements and assembly processes, thereby reducing production time and manufacturing costs.

[0038] Preferably, the end plate body 1 is integrally formed by injection molding, which is convenient for hot riveting processing or directly embedding other components in the end plate body 1. The injection molding processing technology is mature, the production efficiency is high and the manufacturing cost is low.

[0039] Furthermore, if Figure 1 As shown, the end plate body 1 may have multiple partitions and hollow structures, and the partition structure can strengthen the structural strength of the end plate assembly 100. The hollow structure can reduce the weight of the end plate assembly 100, which is beneficial to the heat dissipation of the battery module 200, and also facilitates the production operation of the end plate body 1 in one piece, thereby improving the production yield of the end plate assembly 100. In addition, the specific internal structure and size of the end plate assembly 100 can be adjusted and customized according to the specific application requirements of the battery module 200 to adapt to the requirements of various battery modules 200, and the present invention does not specifically limit this.

[0040] According to the end plate assembly 100 of the battery module 200 of the embodiment of the utility model, by directly arranging the module output pole 2 on the end plate body 1 and connecting it therewith as an integral part, it is possible to ensure the stability and reliability of the structure while simplifying the assembly process of the end plate assembly 100, thereby improving production efficiency and reducing production costs.

[0041] In some embodiments of the present invention, Figure 1 As shown, the module output pole 2 is connected to the end plate body 1 by a hot riveting process. The hot riveting process is used to connect the module output pole 2 and the end plate body 1, which can provide a strong connection and ensure the stability and reliability of the connection between the module output pole 2 and the end plate body 1. On the other hand, the connection method through the hot riveting process enables the end plate assembly 100 to withstand the high current and vibration of the battery module 200, reducing the risk of connection failure.

[0042] In some embodiments of the present invention, Figure 1 As shown, a through hole is provided on the module output pole 2, and a fixing column is provided on the end plate body 1. The fixing column is inserted into the through hole, and a limiting portion 21 is provided at the free end of the fixing column. The limiting portion 21 is located on the outside of the module output pole 2, and is used to limit the module output pole 2 from escaping from the fixing column. Among them, the limiting portion 21 is formed by heating and pressing the free end of the fixing column through a hot riveting process, which can effectively fix and position the module output pole 2, is firm, reliable and low in cost, and improves the stability and reliability of the end plate assembly 100. The fixing column passes through the through hole on the module output pole 2, and limits the detachment of the module output pole 2 through the limiting portion 21, which can effectively prevent the module output pole 2 from accidentally loosening or detaching from the fixing column during use, and further enhances the stability and safety of the end plate assembly 100.

[0043] In some embodiments of the present invention, Figure 1As shown, the end plate assembly 100 of the battery module 200 also includes a bushing 3, which is embedded in the end plate body 1 to ensure the stability and reliability of the structure. The bushing 3 and the end plate body 1 can be made of one piece by embedding. On the one hand, the product structure is optimized, the assembly process of the end plate assembly 100 is simplified, and the number of parts and assembly steps required to be assembled are reduced, making the assembly process of the end plate assembly 100 and the battery module 200 more efficient. On the other hand, the bushing 3 is directly embedded in the end plate body 1, eliminating additional connecting elements and assembly procedures, thereby reducing production time and manufacturing costs. Furthermore, the bushing 3 extends along the width direction of the end plate and is used to fix the battery module 200. Mounting holes 41 can be set at both ends of the bushing 3 to facilitate the installation and fixation of the battery module 200. For example, a mounting portion corresponding to the mounting hole 41 of the bushing 3 can be provided in the battery pack, and the mounting portion and the mounting hole 41 of the bushing 3 can be connected by fasteners, thereby completing the fixation and assembly of the battery module 200 in the battery pack, and also realizing the detachability of the battery module 200 for easy maintenance.

[0044] In some embodiments of the present invention, Figure 1 As shown, the bushing 3 and the end plate body 1 are integrally formed by an injection molding process, and the integrally formed structure simplifies the assembly process, improves the assembly efficiency and the stability of the end plate assembly 100. The injection molding process is convenient for directly embedding the bushing 3 in the end plate body 1, and the injection molding processing technology is mature, with high production efficiency and low manufacturing cost.

[0045] In addition, the bushings 3 are multiple and spaced apart along the length direction of the end plate body 1, which can make the fixed connection of the battery module 200 more stable. On the other hand, the number of bushings 3 can be adjusted to adapt to battery modules 200 of different sizes and shapes to meet different needs and application scenarios, thereby improving the flexibility and adaptability of the end plate assembly 100.

[0046] In some embodiments of the present invention, Figure 1As shown, the end plate assembly 100 of the battery module 200 also includes an equipotential structure 4, which is embedded in the end plate body 1 to ensure the stability and reliability of the structure. The equipotential structure 4 and the end plate body 1 can be integrated by embedding, which optimizes the product structure, simplifies the assembly process of the end plate assembly 100, reduces the number of parts and assembly steps to be assembled, and makes the assembly process of the end plate assembly 100 and the battery module 200 more efficient. On the other hand, the equipotential structure 4 is directly embedded in the end plate body 1, eliminating additional connecting elements and assembly procedures, thereby reducing production time and manufacturing costs. Furthermore, the equipotential structure 4 can provide better electrical connection and balance, ensure uniform charge distribution between the components in the battery module 200, improve the performance and safety of the battery module 200, and thus make the entire battery pack in which the battery module 200 is located safer.

[0047] In some embodiments of the present invention, Figure 1 As shown, the equipotential structure 4 and the end plate body 1 are integrally formed by an injection molding process, and the integrally formed structure simplifies the assembly process, improves the assembly efficiency and the stability of the end plate assembly 100. The injection molding process is convenient for directly embedding the equipotential structure 4 in the end plate body 1, and the injection molding processing technology is mature, with high production efficiency and low manufacturing cost.

[0048] In some embodiments of the present invention, Figure 1 As shown, the equipotential structures 4 are multiple and spaced apart along the length direction of the end plate body 1, which is convenient for connection with more components, and can better realize the electrical connection function and safety protection effect of the equipotential structure 4, thereby improving the safety performance of the battery module 200.

[0049] In some embodiments of the present invention, Figure 1 As shown, the equipotential structure 4 extends along the width direction of the end plate body 1, and the equipotential structure 4 has mounting holes 41 connected to the cold plate 6 at both ends of the end plate body 1 in the width direction, or the equipotential structure 4 includes two substructures located at both ends of the end plate body 1 in the width direction, and the two substructures are respectively provided with mounting holes 41 connected to the cold plate 6. The installation holes 41 are provided to facilitate the connection with the cold plates 6 provided at both ends of the battery module 200, effectively realize the heat dissipation and temperature control of the battery module 200, and help to improve the performance and stability of the battery module 200. On the other hand, the equipotential structure 4 of the battery module 200 is also a connection structure for fixing the end plate assembly 100 and the cold plate 6, which reduces the number of parts of the battery module 200, optimizes the product structure, and further simplifies the assembly steps and production costs.

[0050] In some embodiments of the present invention, Figure 1As shown, the end plate assembly 100 of the battery module 200 also includes a low-voltage plug-in 5, which is riveted to the end plate body 1. The riveting connection process is simple and the connection is firm and reliable. The low-voltage plug-in 5 is provided to facilitate the connection of the low-voltage circuit, provide electrical connection and signal transmission, and enhance the function and usability of the battery module 200.

[0051] The battery module 200 according to an embodiment of the present invention is described below.

[0052] The battery module 200 according to the embodiment of the present invention includes the end plate assembly 100 mentioned above.

[0053] Specifically, Figure 1 and Figure 2 As shown, the end plate assembly 100 of the battery module 200 includes an end plate body 1 and a module output pole 2, and the module output pole 2 is arranged on the end plate body 1 and is an integral part with the end plate body 1. The module output pole 2 can be connected to the end plate body 1 by a hot riveting process or embedded in the end plate body 1, which can ensure the structural stability of the end plate assembly 100, thereby improving the reliability of the battery module 200. On the one hand, the integrated design optimizes the product structure, simplifies the assembly process of the end plate assembly 100, reduces the number of parts and assembly steps that need to be assembled, and makes the assembly efficiency of the battery module 200 higher. On the other hand, the module output pole 2 is directly connected to the end plate body 1, eliminating additional connecting elements and assembly processes, thereby reducing production time and manufacturing costs.

[0054] According to the battery module 200 of the embodiment of the utility model, the module output pole 2 of the end plate assembly 100 is directly arranged on the end plate body 1 and connected thereto as an integral part, which can ensure the structural stability and reliability of the battery module 200 while simplifying the assembly process of the battery module 200, improving production efficiency and reducing production costs.

[0055] A battery pack according to an embodiment of the present invention is described below.

[0056] The battery pack according to the embodiment of the present invention includes the above-mentioned battery module 200 .

[0057] Specifically, the end plate assembly 100 of the battery module 200 includes an end plate body 1 and a module output pole 2, and the module output pole 2 is arranged on the end plate body 1 and is an integral part with the end plate body 1. The module output pole 2 can be connected to the end plate body 1 through a hot riveting process or embedded in the end plate body 1, which can ensure the structural stability of the battery module 200 and the reliability of the electrical connection, thereby improving the reliability and operating performance of the battery pack. On the one hand, the integrated design optimizes the product structure, simplifies the assembly process of the battery module 200, reduces the number of parts and assembly steps that need to be assembled, and makes the assembly efficiency of the battery pack higher. On the other hand, the module output pole 2 is directly connected to the end plate body 1, eliminating additional connecting elements and assembly processes, thereby reducing production time and manufacturing costs.

[0058] According to the battery pack of the embodiment of the utility model, the module output pole 2 of the end plate assembly 100 is directly arranged on the end plate body 1 and connected thereto as an integral part, which can ensure the structural stability and reliability of the battery pack while simplifying the assembly process of the battery pack, improving production efficiency and reducing production costs.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An end plate assembly of a battery module, characterized in that: include: End plate body; A module output pole, the module output pole is arranged on the end plate body and is an integral part with the end plate body; A bushing is embedded in the end plate body and extends along the width direction of the end plate body to fix the battery module.

2. The end plate assembly of the battery module according to claim 1, characterized in that: The module output pole is connected to the end plate body through a hot riveting process.

3. The end plate assembly of the battery module according to claim 2, characterized in that: The module output pole is provided with a through hole, the end plate body is provided with a fixing column, the fixing column is passed through the through hole, and the free end of the fixing column is provided with a limiting portion, the limiting portion is located on the outside of the module output pole, and is used to limit the module output pole from escaping from the fixing column.

4. The end plate assembly of the battery module according to claim 1, characterized in that: The bushing and the end plate body are integrally formed by an injection molding process; And / or, the bushings are multiple and spaced apart along the length direction of the end plate body.

5. The end plate assembly of the battery module according to claim 1, characterized in that: Also includes: The equipotential structure is embedded in the end plate body.

6. The end plate assembly of the battery module according to claim 5, characterized in that: The equipotential structure and the end plate body are integrally formed by an injection molding process; and / or, the equipotential structures are multiple and spaced apart along the length direction of the end plate body; And / or, the equipotential structure extends along the width direction of the end plate body, and the equipotential structure has mounting holes connected to the cold plate at both ends along the width direction of the end plate body, or the equipotential structure includes two substructures located at both ends of the end plate body in the width direction, and the two substructures are respectively provided with mounting holes connected to the cold plate.

7. The end plate assembly of the battery module according to claim 1, characterized in that: Also includes: A low-pressure plug-in is riveted to the end plate body.

8. A battery module, characterized in that: Comprising an end plate assembly according to any one of claims 1-7.

9. A battery pack, characterized in that: Comprising the battery module according to claim 8.

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