A CCS structure

Abstract

This invention proposes a CCS structure, including an aluminum bar and a nickel sheet. The aluminum bar has a trapezoidal groove. One end of the nickel sheet has a U-shaped spring portion, which is inserted into the trapezoidal groove to form a tenon-and-mortise connection. The U-shaped spring portion has a spring tongue, which elastically abuts against the groove wall of the trapezoidal groove in the inserted state to provide elastic self-locking force. This invention enhances the self-locking ability of the nickel sheet before welding through the tenon-and-mortise structure and the spring tongue structure, improves the stability and welding reliability of the nickel sheet after assembly, and solves the problem of poor fixing stability of existing straight hole grooves for U-shaped snap-fit ​​terminals.

Description

Technical Field

[0001] This utility model relates to the field of battery CCS module technology, and in particular to a CCS structure. Background Technology

[0002] In current battery manufacturing processes, especially in the production of CCS modules, the connection between the nickel sheet and the aluminum foil is a critical step. This connection typically requires laser welding to ensure the reliability of the electrical connection and its mechanical strength.

[0003] To prevent the nickel sheet from shifting during welding, existing technologies commonly employ groove structures to position and fix the nickel sheet. For example... Figure 1 As shown, the traditional method of combining nickel sheets and aluminum bars is as follows: a straight hole groove is set on the aluminum bar, and a U-shaped snap-fit ​​terminal is provided at the end of the nickel sheet. The initial fixation is achieved through the elastic deformation of the U-shaped snap-fit ​​and the friction with the edge of the groove.

[0004] As described above, the straight hole groove structure has limited limiting effect on the U-shaped buckle terminal. During handling or operation, the nickel sheet is prone to loosening or even falling off. If the nickel sheet is offset, it will directly affect the positioning accuracy of laser welding, causing defects such as poor welding or off-center welding.

[0005] While it can solve the problem of fixing the nickel sheet to some extent, its straight hole groove has poor stability for fixing U-shaped snap-fit ​​terminals, especially during handling and operation, which can easily cause the nickel sheet to shift, thus affecting the final welding quality. Therefore, it is necessary to provide a CCS structure. Utility Model Content

[0006] In view of this, this utility model proposes a CCS structure, which enhances the self-locking ability of the nickel sheet before welding through the tenon and mortise structure and the spring tongue structure, improves the stability and welding reliability of the nickel sheet after assembly, and solves the problem of poor fixing stability of the existing straight hole groove for U-shaped snap-fit ​​terminals.

[0007] The technical solution of this utility model is implemented as follows:

[0008] This invention provides a CCS structure, including an aluminum foil and a nickel sheet, wherein...

[0009] The aluminum bar is provided with a trapezoidal groove;

[0010] One end of the nickel sheet is provided with a U-shaped spring piece, which is inserted into the trapezoidal groove and forms a tenon-and-mortise connection structure with it;

[0011] The U-shaped spring piece is provided with a spring tongue, which elastically abuts against the wall of the trapezoidal groove in the inserted state to provide elastic self-locking force.

[0012] Based on the above technical solutions, preferably, at least one wall of the trapezoidal groove is inclined, wherein,

[0013] The U-shaped spring piece has one end away from the nickel sheet that elastically abuts against the inclined groove wall, and the other end that elastically abuts against the groove wall opposite to the inclined groove wall.

[0014] Based on the above technical solutions, preferably, at least two spring-loaded portions are provided, wherein,

[0015] One of the spring-loaded portions elastically abuts against the inclined groove wall, and the other spring-loaded portion elastically abuts against the groove wall opposite to the inclined groove wall.

[0016] Based on the above technical solutions, preferably, the width of the trapezoidal groove opening is smaller than the width of the groove bottom.

[0017] Based on the above technical solutions, preferably, the opening width of the U-shaped spring piece is greater than the groove width of the trapezoidal groove when it is not inserted.

[0018] Based on the above technical solutions, preferably, the U-shaped spring portion is provided with a through hole for accommodating the spring tongue portion, and the spring tongue portion can elastically deform in the direction of the through hole under pressure.

[0019] Based on the above technical solutions, preferably, at least one wall of the trapezoidal groove is provided with a limiting groove, wherein,

[0020] When the spring is inserted, its upper end is embedded in the limiting groove.

[0021] Based on the above technical solutions, preferably, the trapezoidal groove is a vertically continuous groove.

[0022] Based on the above technical solutions, preferably, the lower end of the limiting groove extends to the bottom end of the trapezoidal groove.

[0023] Based on the above technical solutions, preferably, the end of the nickel sheet away from the U-shaped spring sheet is provided with a wiring portion.

[0024] The CCS structure of this utility model has the following advantages over the prior art:

[0025] (1) A tenon-and-mortise joint connection structure is formed by combining a trapezoidal groove with a U-shaped spring piece, and a spring tongue is provided on the U-shaped spring piece to enhance the self-locking ability of the nickel sheet before welding. Compared with the traditional combination of straight hole groove and U-shaped buckle, this structure improves the stability of the nickel sheet after assembly, effectively preventing the nickel sheet from loosening or falling off during handling and operation, thereby improving welding accuracy and welding quality.

[0026] (2) By setting a limiting groove on at least one wall of the trapezoidal groove and embedding the top of the spring tongue into the limiting groove in the insertion state, the spring tongue is effectively positioned, thereby further enhancing the structural stability and anti-loosening performance of the nickel sheet after assembly. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the existing nickel sheet and aluminum bar combination structure;

[0029] Figure 2 This is a partial exploded view of a CCS structure according to the present invention;

[0030] Figure 3 This is a schematic diagram of the bonding structure between aluminum foil and nickel sheet;

[0031] Figure 4 This is a schematic diagram of the connection structure between the spring tongue and the limiting groove;

[0032] In the diagram: 1. Aluminum bar; 2. Nickel sheet; 101. Trapezoidal groove; 201. U-shaped spring part; 202. Wiring part; 1011. Limiting groove; 2011. Through hole; 2012. Spring tongue part. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] like Figure 2-4 As shown, a CCS structure of this utility model includes an aluminum bar 1 and a nickel sheet 2.

[0035] The aluminum plate 1 has a trapezoidal groove 101. One end of the nickel plate 2 has a U-shaped spring piece 201, and the end away from the U-shaped spring piece 201 has a wiring part 202, which is a conventional spring terminal structure. The U-shaped spring piece 201 is inserted into the trapezoidal groove 101 to form a tenon-and-mortise connection. The U-shaped spring piece 201 has a spring tongue 2012, which elastically abuts against the groove wall of the trapezoidal groove 101 in the inserted state to provide elastic self-locking force.

[0036] By combining a trapezoidal groove 101 with a U-shaped spring piece 201 to form a mortise and tenon joint connection structure, and in conjunction with the spring tongue 2012, the self-locking capability of the nickel sheet 2 before welding is significantly enhanced. Compared with the traditional combination of straight hole groove and U-shaped buckle, this structure improves the stability of the nickel sheet 2 after assembly, effectively preventing the nickel sheet 2 from loosening or falling off during handling and operation, thereby improving the welding accuracy and welding quality of the subsequent nickel sheet 2.

[0037] In the above CCS structure, at least one wall of the trapezoidal groove 101 is set as an inclined wall, that is, the trapezoidal groove 101 can be a right trapezoid, an isosceles trapezoid, or other asymmetrical trapezoids. The U-shaped elastic piece 201 elastically abuts against the inclined wall at one end away from the nickel sheet 2, and elastically abuts against the wall opposite to the inclined wall at the other end.

[0038] By setting an inclined groove wall, the end of the U-shaped spring piece 201 that contacts the groove wall after insertion will undergo elastic deformation and form an inclined state in accordance with the angle of the groove wall, thereby forming a tenon and mortise joint connection structure together with the inclined groove wall, so as to improve the connection strength and assembly stability after the U-shaped spring piece 201 is inserted.

[0039] In the above CCS structure, at least two spring tongues 2012 are provided, one of which elastically abuts against the inclined groove wall, and the other spring tongue 2012 elastically abuts against the groove wall opposite to the inclined groove wall.

[0040] This structure enables the U-shaped spring piece 201 and the trapezoidal groove 101 to make contact and limit each other in multiple directions, thereby forming a multi-directional stable constraint on the nickel sheet 2 in the assembled state, further enhancing the connection stability and anti-loosening ability of the overall structure, and effectively ensuring the consistency and reliability of welding quality.

[0041] In the aforementioned CCS structure, the width of the trapezoidal groove 101 at the opening is smaller than the width at the bottom, forming a structure that is narrower on the outside and wider on the inside. This generates a certain clamping force after the U-shaped spring piece 201 is inserted, enhancing the fixing effect. Compared to traditional straight hole grooves, this structure can better adapt to U-shaped spring pieces 201 of different sizes, improving assembly flexibility and reliability.

[0042] In the aforementioned CCS structure, the opening width of the U-shaped spring piece 201 is greater than the groove width of the trapezoidal groove 101 when it is not inserted. After insertion, the U-shaped spring piece 201 undergoes elastic deformation, achieving an interference fit with the trapezoidal groove 101.

[0043] This structure ensures that the U-shaped spring piece 201 fits tightly against the wall of the trapezoidal groove 101 after insertion, providing additional friction and self-locking force, further reducing the risk of movement of the nickel sheet 2 during the welding process, and improving welding quality and efficiency.

[0044] In the above CCS structure, the U-shaped spring piece 201 is provided with a through hole 2011 to accommodate the spring tongue 2012 and enable the spring tongue 2012 to elastically deform in the direction of the through hole 2011 under pressure.

[0045] Specifically, the through hole 2011 and the spring tongue 2012 are obtained by stamping. After stamping, the lower end of the spring tongue 2012 remains connected to the bottom of the through hole 2011. In the unpressurized state, the top of the spring tongue 2012 protrudes at least partially beyond the through hole 2011. When subjected to the squeezing action of the trapezoidal groove 101, one side of the protrusion is pushed by the groove wall, while the other side retracts into the through hole 2011, achieving self-adaptive embedding and improving the guiding and limiting reliability during the assembly process.

[0046] In the aforementioned CCS structure, at least one wall of the trapezoidal groove 101 is provided with a limiting groove 1011. When the spring tongue 2012 is inserted, its upper end is embedded in the limiting groove 1011. This effectively positions the spring tongue 2012, further enhancing the structural stability and anti-loosening performance of the assembled nickel sheet 2.

[0047] Furthermore, the trapezoidal groove 101 is a through groove structure that extends vertically, thereby eliminating the restriction on the insertion direction of the U-shaped spring piece 201 by the bottom of the groove, thus removing interference factors during the assembly process and improving the ease of installation and assembly efficiency of the U-shaped spring piece 201. At the same time, the lower end of the limiting groove 1011 extends to the bottom end of the trapezoidal groove 101, facilitating grooving.

[0048] The method of using the CCS structure of this utility model is as follows:

[0049] The U-shaped spring piece 201 is pressed until it undergoes elastic deformation, reducing its width to a state where it can be inserted into the trapezoidal groove 101. After insertion, the U-shaped spring piece 201 recovers its deformation under its own elastic force and forms an elastic abutment with the groove wall of the trapezoidal groove 101. At the same time, the tongue part 2012 is embedded in the limiting groove 1011 to limit the nickel sheet 2.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A CCS structure comprising an aluminum bar (1), characterized in that: It also includes nickel sheets (2), in which, The aluminum bar (1) is provided with a trapezoidal groove (101); The nickel sheet (2) has a U-shaped spring piece (201) at one end, which is inserted into the trapezoidal groove (101) and forms a tenon-and-mortise connection structure with it; The U-shaped spring piece (201) is provided with a spring tongue (2012), which elastically abuts against the groove wall of the trapezoidal groove (101) in the inserted state to provide elastic self-locking force.

2. The CCS structure as described in claim 1, characterized in that: At least one wall of the trapezoidal groove (101) is inclined, wherein, The U-shaped spring piece (201) is elastically abutted against the inclined groove wall at one end away from the nickel sheet (2), and elastically abutted against the groove wall opposite to the inclined groove wall at the other end.

3. A CCS structure as described in claim 2, characterized in that: The spring-loaded part (2012) is provided in at least two parts, wherein, One of the springs (2012) elastically abuts against the inclined groove wall, and the other spring (2012) elastically abuts against the groove wall opposite to the inclined groove wall.

4. A CCS structure as described in claim 1, characterized in that: The width of the opening of the trapezoidal groove (101) is smaller than the width of the bottom of the groove.

5. A CCS structure as described in claim 1, characterized in that: When the U-shaped spring piece (201) is not inserted, its opening width is greater than the slot width of the trapezoidal groove (101).

6. A CCS structure as described in claim 1, characterized in that: The U-shaped spring piece (201) is provided with a through hole (2011) for accommodating the spring tongue (2012) and enabling the spring tongue (2012) to elastically deform in the direction of the through hole (2011) under pressure.

7. A CCS structure as described in claim 1, characterized in that: At least one wall of the trapezoidal groove (101) is provided with a limiting groove (1011), wherein, When the spring tongue (2012) is inserted, its upper end is embedded in the limiting groove (1011).

8. A CCS structure as described in claim 7, characterized in that: The trapezoidal groove (101) is a through groove running vertically.

9. A CCS structure as described in claim 8, characterized in that: The lower end of the limiting groove (1011) extends to the bottom end of the trapezoidal groove (101).

10. A CCS structure as described in claim 1, characterized in that: The nickel sheet (2) has a wiring portion (202) at one end away from the U-shaped spring portion (201).

Images