Cylindrical module conductive connecting piece integration structure
By using an integrally stamped aluminum busbar and connecting components, the problems of heavy weight, high cost and complexity of the conductive connection structure of traditional cylindrical battery modules are solved. This enables rapid positioning and efficient connection of the busbar, improves production efficiency and module lightweighting, and enhances safety.
Patent Information
- Application Number
- CN202423134263.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Traditional cylindrical battery modules have problems with their conductive connection structure, such as heavy weight, long conductive distance, high resistance, easy loosening and falling screws, and high cost. In addition, the use of plastic brackets increases complexity and cost, affecting production efficiency and module weight.
The first and second aluminum busbars are integrally stamped and combined with limiting and connecting components. They achieve rapid positioning and hot-pressing connection through snap-fit grooves and connecting plates, eliminating the hot riveting process and directly integrating the busbars, thus avoiding the use of plastic brackets.
It enables rapid positioning and efficient connection of busbars, reduces processing time, lowers costs, improves production efficiency and module lightweighting, and enhances safety and ease of use.
Smart Images
Figure CN223566820U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery technology, specifically, it relates to an integrated structure for conductive connectors in cylindrical modules. Background Technology
[0002] With the development of new energy vehicles, energy storage systems, and other fields, cylindrical battery modules, as important energy storage units, directly affect the safety and efficiency of the entire battery system due to the performance of their conductive connection structure. Traditional conductive connection structures often use screw-fastened busbars, which have drawbacks such as heavy weight, long conductive distance, high resistance, and easy loosening and falling off of screws.
[0003] In the integration of conductive connection systems (such as CCS busbars), the unique layout of cylindrical cells requires precise docking between the busbars and each cell, resulting in a significant increase in the number of busbars required.
[0004] The traditional solution involves arranging these dense busbars within plastic components and securing them using thermal riveting. This process not only increases manufacturing complexity but also introduces new problems. Currently, aluminum busbars in CCS integrated busbars often rely on plastic brackets for precise positioning and necessary insulation and flame-retardant treatment. While plastic brackets address insulation and fixation issues to some extent, they significantly increase costs. Plastic materials are relatively expensive, and extensive processing is required during production, directly driving up the overall module cost. The introduction of plastic brackets can also lead to a more complex and bulky module structure. Large plastic brackets not only increase the overall weight of the module, affecting the vehicle's or equipment's range and efficiency, but also cause inconvenience during module assembly. The high installation precision required for plastic brackets makes them difficult to adjust and prone to damage during assembly, impacting overall production efficiency and yield.
[0005] In view of this, this utility model is hereby proposed. Utility Model Content
[0006] To address the aforementioned technical problems of high cost and complex process in busbar connection, the basic concept of this utility model is as follows:
[0007] An integrated structure for conductive connectors in a cylindrical module includes:
[0008] The first aluminum busbar is integrally stamped.
[0009] The second aluminum busbar is located at the bottom of the first aluminum busbar and is integrally stamped.
[0010] The integrated component includes a limiting part and a connecting part. The limiting part includes a first snap-fit groove opened inside the first aluminum busbar and a second snap-fit groove opened inside the second aluminum busbar. The connecting part includes six sets of first connecting plates disposed outside the first aluminum busbar, and four sets of first connectors are fixedly installed on the outer wall of the first connecting plates.
[0011] In a preferred embodiment of the present invention, the limiting part further includes a third snap-fit groove opened inside the second aluminum strip, and the bottom of the first aluminum strip is in close contact with the top of the second aluminum strip.
[0012] In a preferred embodiment of the present invention, the connecting part further includes twenty-one sets of second connecting plates disposed outside the first aluminum busbar, four sets of second connecting heads fixedly installed on the top of the second connecting plates, and four sets of third connecting heads fixedly installed on the top of the second connecting plates.
[0013] In a preferred embodiment of this utility model, the six sets of first connecting plates are respectively disposed on both sides of the second aluminum busbar, and three sets of first connecting plates are disposed on the top of one side of the second aluminum busbar.
[0014] In a preferred embodiment of the present invention, the second connecting plate is snapped onto the top of the second aluminum busbar, one end of the first connector is in close contact with one end of the second connector, one end of the third connector is in close contact with one end of another set of second connectors, and six sets of second aluminum busbars and twenty-one sets of second connecting plates are clamped between the first aluminum busbar and the second aluminum busbar.
[0015] In a preferred embodiment of the present invention, a PI hot-press film and a fiber cloth are placed on the top of the first aluminum busbar, a silicone pad is placed on the bottom of the second aluminum busbar, and a fixture is provided on the top of the first aluminum busbar.
[0016] In a preferred embodiment of this utility model, a hot press is provided on the outside of the first aluminum busbar. The fixture sequentially attaches the silicone pad, fiberglass cloth, aluminum busbar, and PI hot press film, and then places them into the hot press for low-temperature cold pressing, followed by high-temperature hot pressing.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] 1. To achieve the purpose of quickly positioning and placing the busbar, so as to integrate and heat-press the busbar, directly eliminating the hot riveting process. After the busbar is integrated and heat-pressed, there is no need to fix it with plastic parts and for insulation and flame retardancy, eliminating the original plastic bracket and making it easier to install.
[0019] 2. It achieves the purpose of quickly placing the first connecting plate and the second connecting plate, reducing the time spent on busbar integration, improving the processing efficiency of busbar integration, facilitating operation by operators, improving the convenience of using the device, and the device has high integration, small size, and thinness, which can make the module lightweight.
[0020] 3. To protect the hot pressing process, improve the quality of the integrated hot pressing of the busbar, enhance the safety of the equipment, and optimize the user experience.
[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0022] In the attached diagram:
[0023] Figure 1 This is a top view of the present invention;
[0024] Figure 2 This is a schematic diagram of the structure of this utility model;
[0025] Figure 3 This is a schematic diagram showing the connection between the first connector and the second connector of this utility model;
[0026] Figure 4 This is a schematic diagram of the first aluminum busbar structure of this utility model;
[0027] Figure 5 This is a schematic diagram of the second aluminum busbar structure of this utility model;
[0028] Figure 6 This is a schematic diagram of the structure of the first connecting plate and the second connecting plate of this utility model.
[0029] In the diagram: 10, First aluminum busbar; 11, First snap-fit slot; 12, Second aluminum busbar; 13, Second snap-fit slot; 14, Third snap-fit slot; 15, First connecting plate; 16, Second connecting plate; 17, First connector; 18, Second connector; 19, Third connector. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0031] Example 1: An integrated structure for conductive connectors in a cylindrical module, specifically as follows... Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the assembly includes a first aluminum busbar 10, which is integrally stamped and is configured as a stamped part; a second aluminum busbar 12, located at the bottom of the first aluminum busbar 10, which is also integrally stamped and is configured as a stamped part; and an integrated component, which includes a limiting part and a connecting part. The limiting part includes a first snap-fit groove 11 formed inside the first aluminum busbar 10 and a second snap-fit groove 13 formed inside the second aluminum busbar 12. The connecting part includes six sets of first connecting plates 15 disposed outside the first aluminum busbar 10, and four sets of first connectors 17 are fixedly installed on the outer wall of the first connecting plates 15. The aluminum busbars are quickly hot-pressed together using the integrated component.
[0032] Specifically, such as Figure 1 and Figure 5 As shown, the limiting part also includes a third locking groove 14 formed inside the second aluminum busbar 12, with the bottom of the first aluminum busbar 10 in close contact with the top of the second aluminum busbar 12. The first aluminum busbar 10 and the second aluminum busbar 12 are positioned and placed by the second locking groove 13, the third locking groove 14 and the first locking groove 11.
[0033] Specifically, such as Figure 1 , Figure 3 and Figure 6 As shown, the connecting part also includes twenty-one sets of second connecting plates 16 disposed outside the first aluminum busbar 10. Four sets of second connectors 18 are fixedly installed on the top of the second connecting plate 16, and four sets of third connectors 19 are fixedly installed on the top of the second connecting plate 16. Six sets of first connecting plates 15 and twenty-one sets of second connecting plates 16 are snapped together and placed between the first aluminum busbar 10 and the second aluminum busbar 12.
[0034] Based on the above, the structure consists of the first aluminum busbar 10, the first snap-fit groove 11, the second aluminum busbar 12, the second snap-fit groove 13, the third snap-fit groove 14, the first connecting plate 15, the second connecting plate 16, the first connector 17, the second connector 18, and the third connector 19.
[0035] Example 2: Based on Example 1, specifically as follows... Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, six sets of first connecting plates 15 are respectively disposed on both sides of the second aluminum busbar 12, and three sets of first connecting plates 15 are disposed on the top of one side of the second aluminum busbar 12. The six sets of first connecting plates 15 are respectively snapped onto the top of both sides of the second aluminum busbar 12.
[0036] Specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the second connecting plate 16 is snapped onto the top of the second aluminum busbar 12. One end of the first connector 17 is tightly attached to one end of the second connector 18, and one end of the third connector 19 is tightly attached to one end of another set of second connectors 18. Six sets of second aluminum busbars 12 and twenty-one sets of second connecting plates 16 are sandwiched between the first aluminum busbar 10 and the second aluminum busbar 12. The twenty-one sets of second connecting plates 16 are placed alternately on top of the second aluminum busbar 12.
[0037] Based on the above, the structure of the second aluminum busbar 12, the first connecting plate 15, the second connecting plate 16, the first connector 17, the second connector 18 and the third connector 19 achieves the purpose of quickly placing the first connecting plate 15 and the second connecting plate 16, reducing the time consumption of busbar integration, improving the processing efficiency of busbar integration, facilitating operation by operators, improving the convenience of device use, and the device has high integration, small size, and thinness, which can make the module lightweight.
[0038] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 and Figure 2 As shown, a PI hot-press film and a fiber cloth are placed on the top of the first aluminum busbar 10, and a silicone pad is placed on the bottom of the second aluminum busbar 12. A fixture is provided on the top of the first aluminum busbar 10. The first aluminum busbar 10 and the second aluminum busbar 12 are protected by the PI hot-press film, the fiber cloth, and the silicone pad.
[0039] Specifically, such as Figure 1 and Figure 2 As shown, a hot press is installed on the outside of the first aluminum busbar 10. A fixture sequentially attaches a silicone pad, fiberglass cloth, aluminum busbar, and PI hot press film, then places them into the hot press for low-temperature cold pressing followed by high-temperature hot pressing. The hot press processes the silicone pad, fiberglass cloth, aluminum busbar, and PI hot press film, facilitating subsequent high-temperature hot pressing of the busbar. The hot press, silicone pad, fiberglass cloth, aluminum busbar, and PI hot press film are not internal to the busbar and are not shown in the figure; they are essential external equipment for busbar hot pressing and are therefore specifically described here.
[0040] In summary, the structure of the first aluminum busbar 10 and the second aluminum busbar 12 protects the hot pressing process, improves the quality of the integrated hot pressing of the busbar, enhances the safety of the device, and optimizes the user experience.
[0041] Working principle: Both the first aluminum busbar 10 and the second aluminum busbar 12 are integrally die-cast to ensure structural strength and stability. They are initially positioned by close contact, preparing for subsequent connection. The first aluminum busbar 10 has a first locking groove 11, and the second aluminum busbar 12 has a second locking groove 13 and a third locking groove 14. These locking grooves work together to provide precise positioning and placement of the aluminum busbars, ensuring accuracy and consistency during connection. The first connecting plate 15 and the second connecting plate 16 each have connectors, and these connecting plates are cleverly locked between the first aluminum busbar 10 and the second aluminum busbar 12. The first connecting plates 15 are mainly distributed on both sides of the second aluminum busbar 12, while the second connecting plates 16 are staggered on top of the second aluminum busbar 12, forming a stable clamping structure. The first connector 17, the second connector 18, and the third connector 19 are in close contact to ensure stable transmission of current or signals. A PI hot-pressing film and fiber cloth are placed on top of the first aluminum busbar 10, and a silicone pad is placed at the bottom of the second aluminum busbar 12. A fixture is set on top of the first aluminum busbar to provide necessary protection and support. The entire structure is placed in a hot press and first undergoes low-temperature cold pressing to initially bond the components. Then, high-temperature hot pressing is performed, using the temperature and pressure of the hot press to form a tight bond between the PI hot-pressing film, fiber cloth, silicone pad, and aluminum busbar, while ensuring a stable connection between the connecting plates and the aluminum busbar. In this process, the temperature and pressure provided by the hot press are key factors; they work together on the material, causing it to undergo plastic deformation and bond tightly. After the above process, the first aluminum busbar 10 and the second aluminum busbar 12 achieve an efficient and reliable connection through integrated components. This connection not only boasts excellent conductivity but also high mechanical strength and stability, meeting the requirements of cylindrical module conductive connectors in complex working environments. The integrated hot-pressing of the busbar eliminates the need for hot riveting, removes the need for fixing with plastic parts and for insulation and flame retardancy, and directly eliminates the original plastic bracket, making installation easier. It features high integration, small size, and thinness, contributing to the lightweight design of the module.
[0042] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. An integrated structure for conductive connectors in a cylindrical module, characterized in that, include: The first aluminum busbar (10) is integrally stamped; The second aluminum busbar (12) is located at the bottom of the first aluminum busbar (10), and the second aluminum busbar (12) is integrally stamped. The integrated component includes a limiting part and a connecting part. The limiting part includes a first snap-fit groove (11) opened inside the first aluminum busbar (10) and a second snap-fit groove (13) opened inside the second aluminum busbar (12). The connecting part includes six sets of first connecting plates (15) disposed outside the first aluminum busbar (10). Four sets of first connectors (17) are fixedly installed on the outer wall of the first connecting plates (15).
2. The integrated structure of the cylindrical module conductive connector according to claim 1, characterized in that, The limiting part also includes a third snap-fit groove (14) opened inside the second aluminum bar (12), and the bottom of the first aluminum bar (10) is in close contact with the top of the second aluminum bar (12).
3. The integrated structure of the cylindrical module conductive connector according to claim 1, characterized in that, The connecting part also includes twenty-one sets of second connecting plates (16) disposed outside the first aluminum busbar (10), four sets of second connectors (18) are fixedly installed on the top of the second connecting plate (16), and four sets of third connectors (19) are fixedly installed on the top of the second connecting plate (16).
4. The integrated structure of the cylindrical module conductive connector according to claim 1, characterized in that, The six sets of first connecting plates (15) are respectively disposed on both sides of the second aluminum busbar (12), and three sets of first connecting plates (15) are disposed on the top of one side of the second aluminum busbar (12).
5. The integrated structure of the cylindrical module conductive connector according to claim 3, characterized in that, The second connecting plate (16) is snapped onto the top of the second aluminum busbar (12). One end of the first connector (17) is in close contact with one end of the second connector (18), and one end of the third connector (19) is in close contact with one end of another set of second connectors (18). Six sets of second aluminum busbars (12) and twenty-one sets of second connecting plates (16) are sandwiched between the first aluminum busbar (10) and the second aluminum busbar (12).
6. The integrated structure of the cylindrical module conductive connector according to claim 1, characterized in that, The top of the first aluminum busbar (10) is covered with a PI hot-press film and a fiber cloth, the bottom of the second aluminum busbar (12) is covered with a silicone pad, and the top of the first aluminum busbar (10) is covered with a fixture.
7. The integrated structure of the cylindrical module conductive connector according to claim 1, characterized in that, The first aluminum busbar (10) is equipped with a hot press. The fixture sequentially attaches the silicone pad, fiberglass cloth, aluminum busbar and PI hot press film, and puts it into the hot press for low temperature cold pressing, and then performs high temperature hot pressing.