A battery module assembly

Abstract

The application discloses a battery module assembly, which comprises a protective shell, a connector and a flexible circuit board, the protective shell is wrapped outside the connector, the flexible circuit board is installed on the top surface of the connector, the protective shell comprises a support and a cover plate, the connector is installed on the support, the cover plate is riveted on the top of the support, and the cover plate presses the flexible circuit board on the connector. The application provides all-round physical protection for the connector through the surrounding wrapping structure, and effectively isolates external collision and mechanical impact which may cause certain damage.

Description

Technical Field

[0001] This application relates to the technical field of battery modules, and more particularly to a battery module assembly. Background Technology

[0002] In the field of new energy electric vehicles, the FPC (flexible printed circuit board) in the battery module, as a core component of the CCS (Cell Contact System), plays a crucial role in the battery management system. It undertakes important functions such as real-time acquisition of key battery performance data, temperature monitoring, and overheat protection, and is a key link in ensuring the safe and stable operation of the battery pack.

[0003] However, current process design and manufacturing processes present numerous problems with precision connector components on FPCs. During assembly and transportation, these connector components lack necessary protective measures, leaving them exposed to a complex and ever-changing external environment for extended periods. The exposed design of the connectors makes them highly susceptible to accidental collisions during transportation and assembly, potentially leading to structural damage and affecting electrical performance due to contact with contaminants.

[0004] More significantly, existing designs lack connector-wrapping protection. This leaves the connector without effective cushioning when subjected to external impacts or vibrations, making the fragile structure susceptible to hidden damage due to stress concentration and resulting in poor impact resistance. This potential defect may gradually become apparent during long-term use, ultimately affecting the reliability of the entire BMS (Battery Management System). Utility Model Content

[0005] The purpose of this application is to provide a battery module assembly that can solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, this application adopts the following technical solution: On one hand, a battery module assembly is provided, including: a protective housing, a connector, and a flexible circuit board. The protective housing is wrapped around the outside of the connector, and the flexible circuit board is mounted on the top surface of the connector. The protective housing includes a bracket and a cover plate. The connector is mounted on the bracket, and the cover plate is riveted to the top of the bracket, and the cover plate presses the flexible circuit board tightly onto the connector.

[0007] Furthermore, a first positioning element is provided at the bottom of the bracket, which can be used to position and fix it with the packaging box.

[0008] Furthermore, the first positioning element is an elastic buckle.

[0009] Furthermore, a second positioning element is provided on the inner side of the bracket for positioning in conjunction with the connector.

[0010] Furthermore, the second positioning element is a positioning buckle.

[0011] Furthermore, limiting grooves are provided on both sides of the top of the bracket, and the cover plate is fitted into the limiting grooves.

[0012] Furthermore, a connecting post protrudes from the limiting groove, and a connecting hole corresponding to the connecting post is provided on the cover plate. The connecting post is hot-riveted into the connecting hole.

[0013] Furthermore, the connector has a plug-in interface that enables electrical connection with the battery.

[0014] Furthermore, the connector has positioning buckles protruding on both sides of its top, and the flexible circuit board has positioning holes corresponding to the positioning buckles.

[0015] Furthermore, the protective housing, the connector, and the flexible circuit board are integrally molded.

[0016] The beneficial effects of this application are as follows: by setting a protective housing consisting of a bracket and a cover plate that encloses the connector, the connector can be effectively prevented from being accidentally collided with the outside world during transportation and assembly, preventing structural damage and reducing contact with contaminants to ensure electrical performance; its enclosed design can enhance the connector's impact and vibration resistance, avoid stress concentration that could cause hidden damage, reduce the risk of potential defects during long-term use, and improve the reliability of the entire battery management system; at the same time, the cover plate presses the flexible circuit board tightly onto the connector, ensuring a stable connection and comprehensively protecting the safe and stable operation of the battery pack. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the battery module assembly described in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the battery module assembly described in the embodiments of this application. Figure 2 (Excluding the cover plate); Figure 3 This is an assembly drawing of the bracket and cover plate described in the embodiments of this application; Figure 4 This is an exploded view of the bracket and cover plate described in the embodiments of this application.

[0019] In the diagram: 1. Protective housing; 101. Bracket; 102. Cover plate; 103. First positioning component; 104. Second positioning component; 105. Connecting post; 106. Limiting groove; 107. Connecting hole; 2. Connector; 201. Insertion interface; 202. Positioning buckle; 3. Flexible circuit board; 301. Positioning hole. Detailed Implementation

[0020] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] like Figures 1-4 As shown, this embodiment provides a battery module assembly, including: a protective housing 1, a connector 2, and a flexible circuit board 3. The protective housing 1 covers the outside of the connector 2, and the flexible circuit board 3 is mounted on the top surface of the connector 2. The protective housing 1 includes a bracket 101 and a cover plate 102. The connector 2 is mounted on the bracket 101, and the cover plate 102 is riveted to the top of the bracket 101, and the cover plate 102 presses the flexible circuit board 3 tightly onto the connector 2.

[0024] Based on the above scheme, the protective housing 1 wraps around the outside of the connector 2. The protective housing 1 consists of a bracket 101 and a cover plate 102. The connector 2 is mounted on the bracket 101, and the cover plate 102 is riveted to the top of the bracket 101. This structure provides all-around enclosed protection for the connector 2. During transportation and assembly, because the connector 2 is enclosed by the protective housing 1, it is no longer directly exposed to the complex and ever-changing external environment, avoiding accidental collisions and thus preventing structural damage caused by collisions. At the same time, the enclosed protection allows the protective housing 1 to effectively buffer the connector 2 when it suffers external impacts or vibrations, avoiding hidden damage to the fragile structure of the connector 2 caused by stress concentration, and enhancing the impact resistance of the connector 2. In addition, the flexible circuit board 3 is mounted on the top surface of the connector 2. After the cover plate 102 is riveted, it presses the flexible circuit board 3 tightly onto the connector 2, ensuring a stable connection between the flexible circuit board 3 and the connector 2, and also preventing contaminants from contacting the connector 2 to a certain extent, thus ensuring electrical performance.

[0025] Furthermore, a first positioning member 103 is provided at the bottom of the bracket 101, which can be used to position and fix the battery module assembly with the packaging box. When the battery module assembly is placed inside the packaging box, the first positioning member 103 will accurately insert into or fit into the corresponding positioning structure of the packaging box. This precise fitting method ensures that the battery module assembly is firmly fixed in a specific position inside the packaging box, thereby effectively resisting the external forces caused by vehicle bumps and shaking during logistics transportation, and preventing the connector 2 from shifting or vibrating excessively along with the battery module assembly.

[0026] Furthermore, the first positioning element 103 is an elastic buckle. During the process of placing the battery module assembly into the packaging box, the elastic buckle, due to its own elastic properties, will undergo elastic deformation under compression when it comes into contact with the matching slots or holes on the packaging box, generating an inward contraction force. As the battery module assembly continues to be lowered, when the elastic buckle reaches the appropriate position in the slot or hole, its elastic restoring force will cause the buckle to quickly pop out and lock into the slot or hole, forming a tight locking connection. During logistics transportation, if the battery module assembly is subjected to external forces and tends to shift, the locking structure between the elastic buckle and the slot or hole will generate significant friction and resistance, hindering the movement of the battery module assembly. At the same time, the elasticity of the elastic buckle can also buffer external impacts to a certain extent and absorb some vibration energy.

[0027] Meanwhile, the inner side of the bracket 101 is provided with a second positioning element 104 for positioning in conjunction with the connector 2. This second positioning element 104 is a positioning latch. During installation, the positioning latch provides precise positioning guidance for the connector 2, allowing operators to quickly and accurately install the connector 2 into the designated position, greatly improving installation efficiency and reducing the time and effort spent on repeated positioning adjustments. Furthermore, the latching connection between the positioning latch and the connector 2 forms a stable fixing structure, effectively preventing misalignment or loosening of the connector 2 after assembly, ensuring the connection stability between the connector 2 and the bracket 101. This stable connection is crucial for ensuring the stability of signal transmission, reducing signal interference and transmission interruptions, improving the overall reliability and performance stability of the battery module assembly, and reducing the risk of failure and maintenance costs caused by connection problems.

[0028] In some embodiments, limiting grooves 106 are formed on both sides of the top of the bracket 101, and the cover plate 102 is fitted into the limiting grooves 106. During the process of installing the cover plate 102 onto the bracket 101, because the limiting grooves 106 are formed on both sides of the top of the bracket 101, as the cover plate 102 gradually approaches the top of the bracket 101 and is placed downwards, the edge of the cover plate 102 will move along the contour of the limiting groove 106. The shape and size of the limiting groove 106 are precisely designed to fit the edge of the cover plate 102, and can guide the installation position of the cover plate 102. As the cover plate 102 continues to be pressed down, its edge will be completely embedded in the limiting groove 106. At this time, the side wall of the limiting groove 106 will exert a lateral constraint force on the cover plate 102, restricting the movement of the cover plate 102 in the horizontal direction. At the same time, the depth of the limiting groove 106 can also limit the excessive movement of the cover plate 102 in the vertical direction to a certain extent, so that the cover plate 102 can be accurately positioned at the preset position on the top of the bracket 101 to achieve a tight fit.

[0029] Furthermore, a connecting post 105 protrudes from the limiting groove 106, and a connecting hole 107 corresponding to the connecting post 105 is provided on the cover plate 102. The connecting post 105 is hot-riveted into the connecting hole 107. The cooperation between the connecting post 105 and the connecting hole 107 provides more precise positioning for the installation of the cover plate 102. Based on the cover plate 102 being embedded in the limiting groove 106, the accuracy of the installation position of the cover plate 102 is further ensured, making the installation process more efficient and precise, and reducing installation errors. Compared with traditional bolt or snap-fit ​​connections, the hot-riveting connection method does not require additional parts, simplifies the structure, reduces costs, and avoids the risk of connection failure due to loose bolts or aging snaps. The strong connection formed after hot riveting can effectively resist external vibration, impact, and tension, greatly enhancing the stability and reliability of the connection between the cover plate 102 and the bracket 101, and ensuring the integrity of the overall structure of the protective shell 1.

[0030] Generally, the connector 2 has a socket 201 that can be electrically connected to the battery. The socket 201 provides a clear and precise mating position for the connection between the battery and the connector 2. Operators can quickly and accurately insert the battery plug into the socket 201, which greatly improves assembly efficiency, reduces the time spent on repeated adjustments due to inaccurate connection positions, and lowers assembly difficulty and error rate.

[0031] Preferably, the connector 2 has positioning buckles 202 protruding on both sides of its top, and the flexible circuit board 3 has positioning holes 301 corresponding to the positioning buckles 202. Before the cover plate 102 is hot-riveted onto the bracket 101, the flexible circuit board 3 is accurately installed on the connector 2 through the positioning engagement of the positioning holes 301 and the positioning buckles 202. This ensures the precise connection between the flexible circuit board 3 and the connector 2, thereby ensuring the stability of the electrical connection. At the same time, it can also prevent the flexible circuit board 3 from loosening during the subsequent riveting of the cover plate 102, ensuring the consistency of the connection and installation.

[0032] It is worth mentioning that the protective housing 1, the connector 2, and the flexible circuit board 3 are integrally molded components. During the manufacturing process of the battery module assembly, specific molds and molding processes are used to place the materials of the support 101 constituting the protective housing 1, the cover plate 102, the connector 2, and the flexible circuit board 3 together within the mold. Through heating and pressurization, these materials are fused and solidified in the mold according to a predetermined shape and structure, ultimately forming a single unit—the integrally molded protective housing 1, connector 2, and flexible circuit board 3. This integral molding method ensures a tight bond between the components at the microscopic level, eliminating the gaps and weak points in connections caused by component splicing in traditional assembly methods.

[0033] Meanwhile, unibody molding eliminates the need for separate manufacturing of multiple components and subsequent cumbersome assembly processes, greatly simplifying the production process, improving production efficiency, reducing production costs, and decreasing product defect rates due to assembly errors. From a product performance perspective, unibody molding eliminates gaps between components, effectively improving overall sealing and protection. It better prevents dust, moisture, and other contaminants from entering, protecting the internal connectors and circuit structure, and enhancing the adaptability and stability of the battery module assembly in complex environments. Furthermore, the unibody structure makes the connections between parts more robust, preventing loosening or separation of components under external impact or vibration. This significantly improves the product's impact and vibration resistance, ensuring the stability and reliability of electrical signal transmission, thereby enhancing the overall performance of the battery management system and extending the lifespan of the battery module assembly.

[0034] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0037] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A battery module assembly, characterized by, include: The protective housing (1), connector (2) and flexible circuit board (3) are provided. The protective housing (1) is wrapped around the outside of the connector (2). The flexible circuit board (3) is mounted on the top surface of the connector (2). The protective housing (1) includes a bracket (101) and a cover plate (102). The connector (2) is mounted on the bracket (101). The cover plate (102) is riveted to the top of the bracket (101) and the cover plate (102) presses the flexible circuit board (3) onto the connector (2).

2. The battery module assembly according to claim 1, characterized in that, The bottom of the bracket (101) is provided with a first positioning element (103), which can be used to position and fix the packaging box.

3. The battery module assembly of claim 2, wherein, The first positioning element (103) is an elastic buckle.

4. The battery module assembly of claim 1, wherein, The inner side of the bracket (101) is provided with a second positioning element (104) for positioning in conjunction with the connector (2).

5. The battery module assembly of claim 4, wherein, The second positioning element (104) is a positioning buckle.

6. The battery module assembly of any one of claims 1-5, wherein, The bracket (101) has limiting grooves (106) on both sides of its top, and the cover plate (102) is fitted into the limiting grooves (106).

7. The battery module assembly of claim 6, wherein, The limiting groove (106) is provided with a connecting post (105) protruding inside, and the cover plate (102) is provided with a connecting hole (107) corresponding to the connecting post (105). The connecting post (105) is hot-riveted into the connecting hole (107).

8. The battery module assembly of any one of claims 1-5, wherein, The connector (2) has a plug interface (201) that can be electrically connected to the battery.

9. The battery module assembly of any one of claims 1-5, wherein, The connector (2) has positioning buckles (202) protruding on both sides of its top, and the flexible circuit board (3) has positioning holes (301) corresponding to the positioning buckles (202).

10. The battery module assembly of any one of claims 1-5, wherein, The protective housing (1), the connector (2), and the flexible circuit board (3) are integrally molded parts.

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