Production process of output pole piece of new energy battery

Abstract

The invention relates to the technical field of battery pole pieces, in particular to a production process of an output pole piece of a new energy battery, which comprises the following steps: step 1, placing a partial region of an aluminum strip in a nickel plating pool for local nickel plating; 2, conveying the aluminum strip subjected to local nickel plating to stamping equipment for bending, punching and cutting treatment to obtain a primary pole piece product; 3, cleaning the primary pole piece product in cleaning equipment to remove oil stains and impurities on the surface of the primary pole piece product; an output pole piece finished product is obtained; according to the invention, the aluminum strip is subjected to local nickel plating treatment, and then stamping and cleaning are carried out, so that the new energy battery output pole piece meeting the technical requirements can be obtained; compared with a traditional aluminum roll stamping and blanking, oil stain cleaning, welding position polishing, polymer diffusion welding, trimming and punching, nickel surface polishing, bending, cleaning, sorting and packaging machining process in the prior art, the production process can be greatly reduced, the production cost can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pole pieces, and in particular to a production process for output pole pieces of new energy batteries. Background Art

[0002] At present, in order to reduce the manufacturing cost of new energy batteries and reduce the weight of the batteries themselves, in the process of converting aluminum to nickel for the positive electrode tabs of the batteries, thin aluminum plates stamped from pure aluminum are usually used as the positive electrode tab materials of the batteries. Moreover, since the positive electrode tabs made of pure aluminum also have the characteristics of pure aluminum being active and easily oxidized, if soldering is performed directly, it will lead to the problem of loose soldering on the aluminum tabs, thereby affecting the detection or use of new energy batteries. For this reason, in the welding process of the aluminum positive tabs of new energy batteries, it is often achieved by welding a section of nickel sheet to the lead-out end of the new energy battery, and then soldering the nickel sheet to achieve electrical connection of the battery, thereby avoiding the problem of cold soldering or desoldering during the aluminum-to-nickel welding process. That is, the battery output tabs produced by our company have a structure of an aluminum sheet welded to a section of nickel sheet.

[0003] However, at present, the production process of the battery output electrode is to punch out the aluminum coil, and then go through the steps of cleaning oil stains, polishing the welding position, polymer diffusion welding, edge cutting and punching, nickel surface polishing, bending, and cleaning in sequence before the battery output electrode production is completed. The process is complicated, which reduces production efficiency and also causes an increase in production costs. For this reason, the present invention proposes a production process for new energy battery output electrodes. Summary of the Invention

[0004] The purpose of the present invention is to provide a production process for output pole pieces of new energy batteries to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a production process for output electrodes of new energy batteries, comprising the following steps:

[0006] Step 1: Placing a portion of the aluminum strip in a nickel plating bath for local nickel plating;

[0007] Step 2: After the partial nickel plating is completed, the aluminum strip is transported to the stamping equipment for bending, punching, and cutting to obtain the initial electrode product;

[0008] Step three: Place the primary electrode in a cleaning device for cleaning to remove surface oil and impurities; and obtain the finished electrode.

[0009] As a preferred technical solution of the present invention, it also includes: after step three, placing the output electrode finished product in a sorting and packaging system for sorting and packaging.

[0010] As a preferred technical solution of the present invention, the aluminum strip is made of AL1060-H24 material.

[0011] As a preferred technical solution of the present invention, the density of the aluminum strip is 2.7 g / cm3.

[0012] As a preferred technical solution of the present invention, the thermal conductivity of the aluminum strip at 20° C. is greater than 230 w / mk.

[0013] As a preferred technical solution of the present invention, the electrical conductivity of the aluminum strip is greater than 34ms / m, and the resistivity thereof is 2.5μQ.cm.

[0014] As a preferred technical solution of the present invention, the expansion coefficient of the aluminum strip is 23.6 cm / cm / °C.

[0015] As a preferred technical solution of the present invention, support frames are fixedly installed on both sides of the nickel plating pool, slide seats are installed on the two support frames, clamps are fixedly installed on the opposite sides of the two slide seats, and the aluminum strip is fixedly installed on the two clamps.

[0016] As a preferred technical solution of the present invention, a linear actuator is installed on the top of the support frame, and one end of the output rod of the linear actuator is fixedly connected to the sliding seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The production process of the new energy battery output electrode of the present invention can obtain the new energy battery output electrode that meets the technical requirements by partially nickel-plating the aluminum strip and then stamping and cleaning it. Compared with the traditional aluminum coil stamping and blanking, oil cleaning, welding position polishing, polymer diffusion welding, edge trimming and punching, nickel surface polishing, bending, cleaning, sorting and packaging processing in the prior art, it can greatly simplify the production process, reduce production costs and improve production efficiency.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a production process flow chart of the present invention;

[0021] Figure 2 The production process flow chart of the prior art;

[0022] Figure 3 It is a structural schematic diagram of the nickel plating pool of the present invention.

[0023] In the figure: 1. Nickel plating tank; 2. Support frame; 3. Sliding seat; 4. Clamp; 5. Aluminum belt; 6. Linear actuator. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] See also Figure 1-Figure 3 In this embodiment, a production process for a new energy battery output electrode is provided, including the following steps:

[0028] Step 1: Placing a partial area of ​​an aluminum strip in a nickel plating bath for local nickel plating, wherein the aluminum strip is AL1060-H24 material, specifically, the density of the aluminum strip is 2.7 g / cm3, the thermal conductivity of the aluminum strip at 20°C is greater than 230 W / mK, the thermal conductivity of the aluminum strip at 20°C is greater than 230 W / mK, the electrical conductivity of the aluminum strip is greater than 34 ms / m, its resistivity is 2.5 μΩ.cm, and the expansion coefficient of the aluminum strip is 23.6 cm / cm / °C;

[0029] Step 2: After the partial nickel plating is completed, the aluminum strip is transported to the stamping equipment for bending, punching, and cutting to obtain the initial electrode product;

[0030] Step 3: Place the electrode in a cleaning device to clean it to remove surface oil and impurities; and obtain the finished electrode.

[0031] After step three, the output electrode products are placed in a sorting and packaging system for sorting and packaging.

[0032] The above production process can greatly simplify the production process, reduce production costs (by about 15%), and improve production efficiency compared to the traditional aluminum coil stamping, oil cleaning, welding position polishing, polymer diffusion welding, edge trimming and punching, nickel surface polishing, bending, cleaning, sorting and packaging processing in the existing technology.

[0033] It should be noted that, since the nickel plating layer in the present invention is relatively thin, the inventors use nickel plating material with a hardness of H24, which has no effect on the torque after testing.

[0034] Currently, the HN-DJ2308 project is in mass use. The early development of the DJ2252 project is aluminum-welded nickel sheets, which will be adjusted to AL1060-H24 material production after verification.

[0035] In this embodiment, support frames 2 are fixedly installed on both sides of the nickel plating pool 1, and slide seats 3 are installed on the two support frames 2. Clamps 4 are fixedly installed on the opposite sides of the two slide seats 3, and the aluminum strip 5 is fixedly installed on the two clamps 4. A linear actuator 6 is installed on the top of the support frame 2, and one end of the output rod of the linear actuator 6 is fixedly connected to the slide seat 3. By arranging the support frame 2 and the slide seat 3 on the nickel plating pool 1, the slide seat 3 can be driven up and down at the support frame 2 by the linear actuator 6, so that the position adjustment of the clamp 4 and the aluminum strip 5 can be realized, so that the local nickel plating position of the aluminum strip 5 can be well adjusted according to the specific local nickel plating area.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The production process of the output electrode of the new energy battery is characterized by: The steps include: Step 1: Placing a portion of the aluminum strip in a nickel plating bath for local nickel plating; Step 2: After the partial nickel plating is completed, the aluminum strip is transported to the stamping equipment for bending, punching, and cutting to obtain the initial electrode product; Step 3: Place the electrode in a cleaning device to clean it and remove surface oil and impurities; The finished output electrode is obtained.

2. The production process of the new energy battery output electrode according to claim 1, characterized in that: Also includes: After step three, the output electrode products are placed in a sorting and packaging system for sorting and packaging.

3. The production process of the new energy battery output electrode according to claim 1, characterized in that: The aluminum strip is made of AL1060-H24 material.

4. The production process of the new energy battery output electrode according to claim 3, characterized in that: The density of the aluminum strip is 2.7 g / cm3.

5. The production process of the new energy battery output electrode according to claim 3, characterized in that: The thermal conductivity of the aluminum strip at 20° C. is greater than 230 W / mK.

6. The production process of the new energy battery output electrode according to claim 3, characterized in that: The electrical conductivity of the aluminum strip is greater than 34 ms / m, and the resistivity thereof is 2.5 μΩ·cm.

7. The production process of the new energy battery output electrode according to claim 3, characterized in that: The expansion coefficient of the aluminum strip is 23.6 cm / cm / °C.

8. The production process of the new energy battery output electrode according to claim 1, characterized in that: Support frames (2) are fixedly mounted on both sides of the nickel plating pool (1), a sliding seat (3) is mounted on each of the two support frames (2), clamps (4) are fixedly mounted on opposite sides of the two sliding seats (3), and the aluminum strip (5) is fixedly mounted on the two clamps (4).

9. The production process of the output electrode of the new energy battery according to claim 8, characterized in that: A linear actuator (6) is installed on the top of the support frame (2), and one end of an output rod of the linear actuator (6) is fixedly connected to the sliding seat (3).

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