CN115101896A - A new energy vehicle battery module nickel sheet stamping and packaging integrated processing technology - Google Patents

Abstract

The invention is suitable for the technical field of new energy automobile battery modules, and provides an integrated processing technology for stamping and packaging nickel sheets of a new energy automobile battery module, which comprises the following steps: conveying the raw material along a set path, punching at a plurality of preset positions on the set path, and separating a nickel sheet from the raw material after punching at the last preset position; the nickel sheet automatically falls to the carrier band, and moves forward continuously along with the carrier band to perform positioning adjustment; the nickel sheet is packaged, and the beneficial technical effects of the implementation of the invention are as follows: as the step of manually placing the qualified nickel sheets to the carrier belt is eliminated, the labor cost of manually placing the qualified nickel sheets to the carrier belt is saved, the price of the product has great advantage in the market, and the production capacity is improved.

Description

A new energy vehicle battery module nickel sheet stamping and packaging integrated processing technology

technical field

The invention belongs to the field of new energy vehicle battery modules, and in particular relates to an integrated processing technology of nickel sheet stamping and packaging for new energy vehicle battery modules.

Background technique

With the intensification of environmental and energy problems in recent years, new energy electric vehicles have gradually entered the public's field of vision, and lithium-ion power battery packs have also received extensive attention as the main source of power for new energy vehicles. Among them, the power battery module is the most important part of the power battery pack, and the battery module is composed of multiple cells. In the battery module, a plurality of cells are arranged side by side to form a battery pack; the ends of the cells lead out tabs and are welded with nickel sheets, so that the tabs of two adjacent cells are connected to each other. For example, a resistance welding machine is used to weld the positive electrode and the positive electrode, and the negative electrode and the negative electrode of the multi-cell battery through the nickel sheet. The current nickel sheet production process is as follows: firstly, the raw material is partially tinned; then the raw material is punched and formed to obtain scattered nickel sheets; The chips are placed on the carrier tape; the carrier tape transports the nickel chips to the packaging equipment to complete the packaging; finally, the packaged nickel chips are packaged and put into storage. In the above process, since the nickel sheet is manually placed on the carrier tape, the production capacity is low, and the manufacturing labor cost is high.

SUMMARY OF THE INVENTION

The invention provides an integrated processing technology for stamping and packaging nickel sheets of a battery module of a new energy vehicle, aiming at solving the problem of low efficiency caused by artificially placing the nickel sheets on the carrier tape in the prior art.

The present invention is achieved in this way, a new energy vehicle battery module nickel sheet stamping and packaging integrated processing technology, including:

The raw material is conveyed along a predetermined path, punched at several preset positions on the predetermined path, and the nickel sheet is separated from the raw material after stamping at the last preset position;

The nickel sheet automatically falls to the carrier tape, and continues to move forward with the carrier tape and adjust the positioning;

The nickel sheet is encapsulated.

In the above-mentioned process, since the nickel sheet is punched and formed, it falls off and falls naturally to the carrier tape. Compared with the existing nickel sheet production process, the step of manually placing the qualified nickel sheet on the carrier tape is eliminated, which saves the manual labor for testing. The labor cost of placing qualified nickel sheets on the carrier tape makes the price of the product have a great advantage in the market, and at the same time increases the production capacity.

Further, at least three preset positions are set on the predetermined path, one of which is to perform punching and edge-cutting processing on the nickel sheet, and one of which is to perform the bending processing of the nickel sheet, one of which is In this process, the raw materials are formed by step-by-step stamping. Compared with one-time stamping, the stress-bearing area of the raw materials is smaller and the shear stress is greater during step-by-step stamping. It can avoid the situation that the raw material cannot be cut off during punching, and at the same time can effectively improve the accuracy of punching position and punching position.

Further, the predetermined path crosses the carrier tape, the predetermined path includes a lower die hole, a lower die groove is formed on the carrier tape, and the separated nickel sheet falls from the lower die hole to the lower die hole. In the lower die groove, the raw material is punched at the above at least three preset positions and then the nickel sheets are separated. When the raw material reaches the last preset position, the lower die hole is located directly above the lower die groove, and the punching tool pushes the raw material. The nickel sheet is obtained by punching, and the nickel sheet naturally falls into the lower die groove due to its own weight, which saves the labor cost of manually placing the qualified nickel sheet on the carrier tape. Belt to transport nickel sheets.

Further, the raw materials are partially tinned before stamping, the tin coating has good stability, strong corrosion resistance and discoloration resistance, and the coating is non-toxic, soft, and has good solderability and ductility. Therefore, it is widely used in industry. has a wide range of applications. In the present invention, tin is plated on the raw material as a cathodic coating, and the nickel sheet can be mechanically protected from corrosion only when the coating has no pores. The product formed from layers and organics is not toxic.

Further, the local tin plating step of the raw material is as follows:

Paste the electroplating film and cover the designated part of the raw material;

The exposed parts of the raw material are tinned in the plating bath.

Since the electroplating film has no electrical conductivity, the exposed part of the raw material releases electrons as a cathode in the electroplating tank, and the tin ions in the electroplating tank are reduced to nickel at the exposed part of the raw material and form a tin layer, that is, local tin plating is completed. The principle is simple and easy to implement.

Further, the described carrying tape continues to move forward and performs positioning adjustment, and the steps are as follows:

The positioning adjustment is realized by a positioning device, the positioning device includes a guide needle cylinder and a guide needle, and the carrier tape transports the nickel sheet to the positioning device;

The guide needle cylinder drives the guide needle to move down to position the nickel sheet.

After the nickel sheet is adjusted in angle and position through the positioning device, it is convenient for size detection and alignment detection.

Further, the described nickel sheet is encapsulated, and the steps are as follows:

The encapsulation device includes an encapsulation cylinder, and the nickel sheet is conveyed to the encapsulation device;

The sealing cylinder drives the hot pressing plate connected to it to move to press the carrier tape and the heat sealing film to complete the heat sealing.

Furthermore, in order to avoid the formation of a dense oxide film on the surface of the nickel sheet in the humid air at room temperature, thereby affecting the conductivity of the battery module after welding, the inert gas is filled when the thermal encapsulation is completed by the encapsulation device, and the encapsulation is completed. The air tightness test is also carried out to prevent the water vapor and oxygen in the air from contacting the nickel sheet.

Further, in order to ensure the qualified rate of products packaged and put into storage, the following steps are performed on the packaged nickel sheets:

Carry out a qualified inspection to determine the qualified and unqualified products;

Eliminate unqualified products detected;

Pack the detected qualified products;

The packaged qualified products are put into storage.

Further, in order to ensure that the number of qualified products after each batch of packaging reaches the preset value, the following steps are performed. After rejecting the unqualified products, the number of rejected products is determined and supplemented, and the number of qualified products is replenished before packaging and storage. .

The beneficial technical effects of implementing the present invention are: because the raw materials are conveyed along a predetermined path, punching is performed at several preset positions on the predetermined path, and nickel sheets are separated from the raw materials after stamping at the last preset position; It automatically drops to the carrier tape, eliminating the manual step of placing the qualified nickel sheets on the carrier tape, so it saves the labor cost of manually placing the qualified nickel sheets on the carrier tape, so that the price of the product has the highest price in the market. Great advantage while increasing productivity.

Description of drawings

Fig. 1 is the process flow schematic diagram of the present invention;

Fig. 2 is the step-by-step stamping process schematic diagram of the present invention;

FIG. 3 is a schematic structural diagram of the stamping and packaging integrated equipment of the present invention.

In the above drawings, the meanings represented by the marks are: 101, preheating cylinder; 102, cover plate; 103, backing plate; 104, heat insulation plate; 105, heating layer; 106, plywood; 107, stripping plate; 108 , Lower die base; 2. Positioning device; 3. Packaging device; 4. Carrier tape pulling device; 5. Carrier tape fixture.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Referring to FIG. 1 , the present embodiment is a new energy vehicle battery module nickel sheet stamping and packaging integrated processing technology, including:

The raw material is conveyed along a predetermined path, punched at several preset positions on the predetermined path, and the nickel sheet is separated from the raw material after stamping at the last preset position;

The nickel sheet automatically falls to the carrier tape, and continues to move forward with the carrier tape and adjust the positioning;

The nickel sheet is encapsulated.

In the above-mentioned process, since the nickel sheet is punched and formed, it falls off and falls naturally to the carrier tape. Compared with the existing nickel sheet production process, the step of manually placing the qualified nickel sheet on the carrier tape is eliminated, which saves the manual labor for testing. The labor cost of placing qualified nickel sheets on the carrier tape makes the price of the product have a great advantage in the market, and at the same time increases the production capacity. At least three preset positions are set on a predetermined path, one of which is for punching and cutting edge processing of the nickel sheet, one of which is for bending of the nickel sheet, and one of which is preset. The nickel sheet is cut to short sides. In this process, the raw material is formed by step-by-step stamping. Compared with one-time stamping, the stress area of the raw material is smaller and the shear stress is larger during the step-by-step stamping process, which can avoid the stamping process. In the case where the raw material cannot be cut, it can effectively improve the accuracy of the punching position and punching position.

This scheme does not limit the specific number of stamping times and the position of each stamping. Referring to FIG. 2, in this embodiment, the raw materials are transported from left to right, and the raw materials are transported by steel belts and punched at the above three preset positions. When reaching the first preset position (A in the figure), execute S1: punching and trimming the raw material by the punching mechanism; when reaching the second preset position (B in the figure), execute S2: punching The mechanism bends the nickel sheet; when it reaches the third preset position (C in the figure), S3 is performed: the punching mechanism cuts the nickel sheet to short sides; finally, the nickel sheet is obtained by punching, in some other schemes , the order of the above steps S1, S2 and S3 can be exchanged, for example, S2 is executed first, then S1 is executed, and finally S3 is executed.

The predetermined path and the carrier tape are crossed, the predetermined path includes a lower die hole, a lower die groove is formed on the carrier tape, the separated nickel sheet falls from the lower die hole to the lower die groove, and the raw material passes through the above at least three presets. After the position step is punched, the nickel sheet is separated. When the raw material reaches the last preset position, the lower die hole is located directly above the lower die groove. At this time, the punching tool punches the raw material to obtain the nickel sheet, and the nickel sheet falls naturally due to its own weight. In the lower die groove, the labor cost of manually placing the qualified nickel sheets on the carrier tape is saved, and the carrier tape is clamped and pulled by the carrier tape pulling device 4 to transport the nickel sheets.

The raw materials are partially tinned before stamping. The tin coating has good stability, strong corrosion resistance and discoloration resistance. The coating is non-toxic, soft, and has good solderability and ductility. Therefore, it is widely used in industry. In the present invention, tin is plated on the raw material as a cathodic coating, and the nickel sheet can be mechanically protected from corrosion only when the coating has no pores. The product formed from layers and organics is not toxic.

The steps of local tin plating of raw materials are as follows:

Paste the electroplating film and cover the designated part of the raw material;

The exposed parts of the raw material are tinned in the plating bath.

Since the electroplating film has no electrical conductivity, the exposed part of the raw material releases electrons as a cathode in the electroplating tank, and the tin ions in the electroplating tank are reduced to nickel at the exposed part of the raw material and form a tin layer, that is, local tin plating is completed. The principle is simple and easy to implement.

The steps for positioning adjustment are as follows:

The positioning adjustment is realized by the positioning device 2, the positioning device 2 includes a guide needle cylinder and a guide needle, and the carrier tape transports the nickel sheet to the positioning device;

The guide needle cylinder drives the guide needle to move down to position the nickel sheet.

After the nickel sheet is adjusted in angle and position through the positioning device 2 , it is convenient for size detection and alignment detection.

Preferably, the positioning device further includes an industrial camera. During the positioning process, the industrial camera takes pictures of the position of the nickel sheet according to a preset frequency and compares it with the preset angle and position of the nickel sheet, and feedbacks the control needle cylinder to drive the guide by analyzing the photo data. The needle moves to adjust the position of the nickel piece until the nickel piece reaches the preset angle and position. After the nickel piece is adjusted by the positioning device, the industrial camera takes a picture of the nickel piece and compares the obtained photo with the preset nickel piece. , by analyzing the photo data to carry out size detection and alignment detection, and reject the nickel sheets that fail the detection.

The encapsulation processing steps are as follows:

The encapsulation device 3 includes an encapsulation cylinder, and the nickel sheet is transported to the encapsulation device;

The sealing cylinder drives the hot pressing plate connected to it to move to press the carrier tape and the heat sealing film to complete the heat sealing.

Preferably, the nickel sheet that has passed the size detection and alignment detection is adjusted to a preset position by the positioning device 2, and the packaging cylinder drives the hot pressing plate connected to it to move, isolates each nickel sheet separately, and presses the heat sealing film. With carrier tape, thermal encapsulation is completed.

Preferably, referring to FIG. 3 , before the positioning adjustment of the nickel sheet, the carrier tape is preheated by a preheating mechanism to facilitate subsequent thermal packaging. The preheating mechanism includes a preheating cylinder 101 , which is vertical and The piston rod of the preheating cylinder 101 passes through the upper cover plate 102 and is connected to a backing plate 103 for buffering. The heating layer 105, the lower end of the heating layer 105 is connected to a splint 106 for conducting heat energy, a stripper plate 107 and a lower die base 108 are arranged directly under the splint 106, and the preheating cylinder 101 drives the splint 106 to move down to fit the carrier tape and perform preheating .

This solution does not limit the structure of the heating layer 105 . Specifically, in this solution, the heating layer 105 is made of copper and has a heating tube inside. Copper has a large thermal conductivity and can conduct heat quickly.

Preferably, before the above-mentioned preheating step, the carrier tape is positioned by the carrier tape jig 5 to be aligned.

In order to avoid the formation of a dense oxide film on the surface of the nickel sheet in humid air at room temperature, thereby affecting the conductivity of the battery module after welding, an inert gas (such as nitrogen) is charged when the thermal packaging is completed by the packaging device, and the packaging is completed. Air tightness detection can prevent water vapor and oxygen in the air from contacting the nickel sheet.

In order to ensure the qualified rate of products packaged and put into storage, the following steps are performed on the packaged nickel sheets:

Determine the qualified and unqualified products through the test results of the above-mentioned size inspection, alignment inspection and air tightness inspection;

Eliminate unqualified products detected;

Pack the detected qualified products;

The packaged qualified products are put into storage.

In order to ensure that the number of qualified products after each batch of packaging reaches the preset value, the following steps are carried out. After rejecting the unqualified products, determine the number of rejected products and make up for the number. The variable X is counted. In some schemes, the initial value of the variable X is set to 0. When a qualified product is detected, X is automatically incremented by 1. When a non-conforming product is detected, the value of X is not changed until the value of X reaches the preset value. It can be packaged and put into storage; in other schemes, the unqualified product variable Y with an initial value of 0 is added, and X will increase by 1 regardless of whether the product is qualified or not, and Y will increase by 1 only when the product is detected to be unqualified. When the value reaches the preset value, it can be packaged and put into storage, and the product qualification rate can be obtained through calculation.

The working principle of the present embodiment is as follows: the raw materials are sequentially transported to three preset positions by the steel belt for stamping, and when the raw materials reach the first preset position, (S1) the stamping mechanism performs punching and long edge processing on the raw materials; When reaching the second preset position, (S2) the punching mechanism performs bending processing on the nickel sheet; when reaching the third preset position, (S3) the punching mechanism performs short-cut processing on the nickel sheet; finally, the nickel sheet is obtained by punching The nickel sheet naturally falls into the lower die groove on the carrier tape and moves to the positioning device with the carrier tape. After the positioning device adjusts the angle and position, the nickel sheet is transported to the packaging device for packaging and qualified inspection. When the quantity reaches the preset value, it will be packaged and put into storage.

The beneficial technical effects of this embodiment are: since the raw materials are conveyed along a predetermined path, punching is performed at several preset positions on the predetermined path, and nickel sheets are separated from the raw materials after stamping at the last preset position; It automatically drops to the carrier tape, eliminating the manual step of placing the qualified nickel sheets on the carrier tape, so it saves the labor cost of manually placing the qualified nickel sheets on the carrier tape, so that the price of the product has the highest price in the market. Great advantage while increasing productivity.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. The utility model provides a new energy automobile battery module nickel piece punching press encapsulation integration processing technology which characterized in that includes:

conveying the raw material along a set path, punching at a plurality of preset positions on the set path, and separating a nickel sheet from the raw material after punching at the last preset position;

the nickel sheet automatically falls to the carrier band, and moves forward continuously along with the carrier band to perform positioning adjustment;

and packaging the nickel sheet.

2. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology of claim 1, characterized in that: at least three preset positions are arranged on the set path, wherein one preset position is used for punching and cutting long edges of the nickel sheet, one preset position is used for bending the nickel sheet, and one preset position is used for cutting short edges of the nickel sheet.

3. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology according to claim 1, wherein the nickel sheet automatically falls to the carrier tape, and the new energy automobile battery module nickel sheet stamping and packaging integrated processing technology is characterized in that: the established path and the carrier band are crossed, the established path comprises a lower die hole, a lower die groove is formed in the carrier band, and the separated nickel sheet falls into the lower die groove from the lower die hole.

4. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology of claim 1, characterized in that: the raw material is locally tin-plated prior to stamping.

5. The stamping and packaging integrated processing technology for the nickel sheet of the new energy automobile battery module according to claim 4, wherein the local tinning step of the raw material is as follows:

adhering the electroplating film to cover the appointed position of the raw material;

the bare part of the raw material is tinned in an electroplating bath.

The feeder drives the nickel sheet to move and pokes the nickel sheet to a preset angle and a preset position through the guide needle so as to complete positioning.

6. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology as claimed in claim 1, wherein the new energy automobile battery module nickel sheet stamping and packaging integrated processing technology continues to move forward along with the carrier tape and carries out positioning adjustment, and the new energy automobile battery module nickel sheet stamping and packaging integrated processing technology is characterized in that:

positioning adjustment is achieved through a positioning device, the positioning device comprises a guide needle cylinder and a guide needle, and the carrier tape conveys the nickel sheet to a conveying positioning device;

the guide needle cylinder drives the guide needle to move downwards so as to position the nickel sheet.

7. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology according to claim 1, wherein the nickel sheet is packaged, and the new energy automobile battery module nickel sheet stamping and packaging integrated processing technology is characterized in that:

the packaging device comprises a packaging cylinder, and the nickel sheet is conveyed to the packaging device;

and the packaging cylinder drives the hot pressing plate connected with the packaging cylinder to move so as to press the carrier tape and the heat sealing film, so that heat packaging is completed.

8. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology of claim 7, characterized in that: and the packaging device also performs air tightness detection after heat packaging is finished.

9. The integrated processing technology for stamping and packaging the nickel sheet of the new energy automobile battery module according to claim 7, further comprising:

carrying out qualification inspection on the packaged nickel sheet, and determining qualified products and unqualified products;

removing the detected unqualified products;

packaging the detected qualified products;

and warehousing the packaged qualified products.

10. The new energy automobile battery module nickel sheet stamping and packaging integrated processing technology of claim 9, characterized in that: and after the unqualified products are removed, determining the removed quantity and complementing the quantity, and packaging and warehousing after the quantity of the qualified products is complemented.

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