Flexible connection structure for output electrode of battery module
By using hardware stamping molds and polymer diffusion welding equipment in the output extremely soft connection structure of the battery module, the risk of aluminum foil layering is solved, cost savings and time shortening is achieved, and the normal working performance of the battery module is ensured.
Patent Information
- Application Number
- CN202422562503.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-23
AI Technical Summary
In the prior art, the extremely soft output connection of the CCS battery module of the new energy vehicle is likely to cause aluminum foil to be layered when machining the thinner welding area, causing cracking risks, and the machining cost is high and the time is long.
The hardware stamping mold is used to form a welding cavity on the first connection part of the aluminum row, and multi-layer soft aluminum foil is welded through polymer diffusion welding equipment. The circular hole position and locking hole position are punched using the hardware stamping mold. The bending part is bent through the hardware forming mold, and 0.1mm thickness nickel foil is attached to the surface layer of the hole position.
It effectively avoids the risk of aluminum foil layering, saves machining costs, shortens process time, improves finished product quality, and ensures the electrical, thermal and corrosion resistance of the battery module.
Smart Images
Figure CN223156228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery modules, in particular to a soft connection structure for the output pole of a battery module. Background Technique
[0002] During the daily use of the CCS battery module of new energy vehicles, there is a certain degree of vibration. When designing the battery module, in order to consider the absorption of vibration energy during daily use, a soft connection structure is adopted for the output pole. For the positive and negative output pole aluminum bars of the new energy CCS battery module to meet the laser welding process with the battery cells, the substrate thickness of the welding area needs to be reduced to 1.5 mm, and the common processing method is machining.
[0003] In the actual production process, since the welding peel strength of aluminum material is lower than the downward pressure of the machining tool, the machining scheme of thinning the material in the welding area has the risk of causing aluminum foil delamination, which is likely to cause cracking of the soft connection of the output pole.
[0004] Therefore, those skilled in the art provide a soft connection structure for the output pole of a battery module to solve the problems raised in the above background technique. Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the utility model provides a soft connection structure for the output pole of a battery module, which solves the problems raised in the above background technique.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A soft connection structure for the output pole of a battery module, which includes: an aluminum bar, which is composed of a first connection part, a bending part and a second connection part; a welding cavity, which is opened on the first connection part, a first locking hole position is penetrated on the inner wall surface of the welding cavity, and a circular hole position is penetrated on the first connection part; a cutting position is cut on one side of the bending part and the second connection part; a second locking hole position, which is penetrated through the second connection part, and the number of the second locking hole positions is two.
[0008] According to the soft connection structure for the output pole of the battery module, the aluminum bar is laminated by multiple layers of soft aluminum foils to the designed thickness and welded by a polymer diffusion welding device.
[0009] According to the soft connection structure for the output pole of the battery module, the welding cavity is thinned by a hardware stamping die, the welding cavity is circular, and the first locking hole position is at the center of the welding cavity.
[0010] According to the soft connection structure for the output pole of the battery module, the cutting position is blanked on one side of the bending part and the second connection part by a hardware stamping die.
[0011] According to the battery module output pole soft connection structure, the circular hole and the second locking hole are punched out by a metal stamping die.
[0012] According to the battery module output pole soft connection structure, the bent portion is formed by bending through a hardware forming die.
[0013] According to the battery module output pole soft connection structure, the surfaces of the first locking hole, the circular hole and the second locking hole are attached with 0.1 mm thick nickel foil.
[0014] The utility model provides a battery module output pole soft connection structure. It has the following beneficial effects:
[0015] (1) In the actual production process, since the welding peel strength of the aluminum material is lower than the downward pressure of the machining tool, the scheme of machining thinning the material of the welding area has the risk of causing the aluminum foil to be delaminated, which is easy to cause the output extremely soft connection to crack. The present application uses a metal stamping die to thin the first connection part to form a welding cavity, which can save machining costs and shorten the machining process time, effectively avoid the risk of delamination caused by machining, and improve the quality of the finished product.
[0016] (2) A metal stamping die is used to form a welding cavity on the first connection part, which effectively avoids the risk of delamination caused by machining. A circular hole and a second locking hole are punched out by a metal stamping die, and the bent part is bent by a metal forming die, which facilitates the connection between the output pole and the battery cell.
[0017] (3) A 0.1 mm thick nickel foil is attached to the surface of the first locking hole, the circular hole, and the second locking hole. The excellent electrical conductivity, thermal conductivity, and corrosion resistance of the nickel foil ensure the normal operation of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a three-dimensional schematic diagram of a battery module output terminal soft connection structure of the utility model Figure 1 ;
[0019] Figure 2 This is a three-dimensional schematic diagram of a battery module output terminal soft connection structure of the utility model Figure 2 ;
[0020] Figure 3 This is a front view of a battery module output terminal soft connection structure of the utility model;
[0021] Figure 4 It is a bottom view of a battery module output pole flexible connection structure of the utility model.
[0022] Legend:
[0023] 10. First connection part; 11. Welding cavity; 12. First locking hole position; 13. Bending part; 14. Second connection part; 15. Circular hole position; 16. Second locking hole position; 17. Cutting position. Detailed implementation mode
[0024] It should be noted that like reference numerals and letters indicate like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0025] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0026] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.
[0027] As Figures 1-4 shown: A soft connection structure for the output pole of a battery module, which includes: an aluminum row, the aluminum row is composed of a first connection part 10, a bending part 13 and a second connection part 14; a welding cavity 11, the welding cavity 11 is opened on the first connection part 10, a first locking hole position 12 is penetrated and opened on the inner wall surface of the welding cavity 11, and a circular hole position 15 is penetrated and opened on the first connection part 10; a cutting position 17 is cut on one side of the bending part 13 and the second connection part 14; a second locking hole position 16, the second locking hole position 16 is penetrated and opened on the second connection part 14, and the number of the second locking hole positions 16 is two.
[0028] Specifically, during the actual production process, since the welding peel strength of the aluminum material is lower than the downward pressure of the machining tool, the solution of machining and thinning the material in the welding area has a risk of causing delamination of the aluminum foil, which is likely to cause cracking of the output soft connection. In this application, the welding cavity 11 is formed by thinning on the first connecting portion 10 using a hardware stamping die, which can save machining costs and shorten the machining process time, effectively avoid the delamination risk caused by machining, and improve the finished product quality.
[0029] The aluminum row is laminated by multiple layers of soft aluminum foils to the designed thickness and welded by a polymer diffusion welding device.
[0030] Specifically, by setting that the aluminum row is laminated by multiple layers of soft aluminum foils to the designed thickness and welded by a polymer diffusion welding device, the aluminum row is used to meet the soft connection between the output pole and the battery cell.
[0031] The welding cavity 11 is formed by thinning using a hardware stamping die. The welding cavity 11 is circular, and the first locking hole position 12 is at the center of the welding cavity 11.
[0032] Specifically, by using a hardware stamping die to thin the first connecting portion 10 to form the welding cavity 11, the delamination risk caused by machining is effectively avoided. The first locking hole position 12 is opened in the welding cavity 11 to facilitate the locking of the first connecting portion 10.
[0033] The cutting position 17 is blanked on one side of the bending portion 13 and the second connecting portion 14 using a hardware stamping die.
[0034] Specifically, by using a hardware stamping die to blank one side of the bending portion 13 and the second connecting portion 14, the excess aluminum row material is removed.
[0035] The circular hole position 15 and the second locking hole position 16 are blanked using a hardware stamping die. The bending portion 13 is bent using a hardware forming die.
[0036] Specifically, the circular hole position 15 and the second locking hole position 16 are blanked using a hardware stamping die, and the bending portion 13 is bent using a hardware forming die, which is convenient for the connection between the output pole and the battery cell.
[0037] A nickel foil with a thickness of 0.1 mm is attached to the surfaces of the first locking hole position 12, the circular hole position 15, and the second locking hole position 16.
[0038] Specifically, by attaching a nickel foil with a thickness of 0.1 mm to the surfaces of the first locking hole position 12, the circular hole position 15, and the second locking hole position 16, the excellent electrical conductivity, thermal conductivity, and corrosion resistance of the nickel foil ensure the normal operation of the battery module.
[0039] The working principle of a soft connection structure for the output pole of a battery module in this application is as follows: In this application, a welding cavity 11 is formed by thinning the first connecting portion 10 using a hardware stamping die, which can save machining costs and shorten the machining process time, effectively avoid the delamination risk caused by machining, and improve the finished product quality.
[0040] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.
Claims
1. A soft connection structure for the output pole of a battery module, characterized in that, Including: An aluminum row, which is composed of a first connecting part (10), a bending part (13) and a second connecting part (14); A welding cavity (11), which is opened on the first connecting part (10). A first locking hole position (12) is penetrated and opened on the inner wall surface of the welding cavity (11), and a circular hole position (15) is penetrated and opened on the first connecting part (10); A cutting position (17) is cut on one side of the bending part (13) and the second connecting part (14); A second locking hole position (16), which is penetrated and opened on the second connecting part (14), and the number of the second locking hole positions (16) is two.
2. The output pole soft connection structure of the battery module according to claim 1, wherein: The aluminum row is laminated by multiple layers of soft aluminum foils to the designed thickness and welded by a polymer diffusion welding device.
3. The output pole soft connection structure of the battery module according to claim 1, characterized in that: The welding cavity (11) is thinned by a hardware stamping die. The welding cavity (11) is circular, and the first locking hole position (12) is at the center position of the welding cavity (11).
4. The output pole soft connection structure of the battery module according to claim 1, characterized in that: The cutting position (17) is punched on one side of the bending part (13) and the second connecting part (14) by a hardware stamping die.
5. The soft connection structure of the output pole of the battery module according to claim 1, characterized in that: The circular hole position (15) and the second locking hole position (16) are punched by a hardware stamping die.
6. The soft connection structure of the output pole of the battery module according to claim 1, wherein: The bending part (13) is bent by a hardware forming die.
7. The output pole soft connection structure of the battery module according to claim 1, characterized in that: A nickel foil with a thickness of 0.1 mm is attached to the surfaces of the first locking hole position (12), the circular hole position (15) and the second locking hole position (16).