CN106994453A - Method for cleaning plate head of battery polar plate - Google Patents

Abstract

The present invention relates to a battery plate head cleaning method, which is to use a laser to clean the battery plate head before lead bridge welding, so that the plate head can reduce dirt attached to the surface or oxides and dust generated on the surface after laser cleaning, so as to facilitate the combination with the lead bridge welding, and avoid the problem that the dirt on the surface or oxides and dust generated on the surface become obstacles during the lead bridge welding process, thereby causing a decrease in the heat and energy conductivity coefficient.

Description

How to clean battery plate head

technical field

The invention relates to a method for cleaning the head of a battery pole plate, in particular to a method for cleaning the head of a battery pole plate with a laser.

Background technique

The storage battery seen on the market can also be called wet battery or water-free maintenance or battery. It mainly uses the plate and electrolyte to have a chemical effect, converts electrical energy into chemical energy and stores it, and converts the chemical energy during use. Those who can release and convert into electrical energy.

Among them, the storage battery contains many plates with positive and negative electrodes staggered, and in order to make the positive and negative plates bridge each other correctly, each positive plate and negative plate will be provided with a plate head, and then The head of each positive plate is connected in parallel with a lead bridge, and the head of each negative plate is also connected in parallel with a lead bridge, so that each positive plate and each negative plate are respectively connected through the parallel connection of the lead bridge.

However, in the process of serial welding, the cleanliness of the board head will affect the welding (welding) and conductive effect of the subsequent lead bridge. Therefore, the industry will clean the board head before the lead bridge welding process of the board head. , to remove the dirt on the surface of the board head or the oxides and dust generated on the surface.

The traditional method of cleaning the plate head is to stack the anode plate and the cathode plate separately, and then manually clean the surface of the plate head one by one with a steel brush, and then stack the anode plate head, separator, and cathode plate head alternately after cleaning , but this cleaning method will have the following disadvantages:

1. Because the steel brush is used to directly scrub the surface of the board head, it is easy to cause the force of the steel brush to remove the surface of the board head due to the different force, and to form different depths of brushing lines on the surface of the board head, which is easy to make the board Head thickness is getting thinner.

2. Because the steel brush is used to directly scrub the surface of the board head, the cleanliness of the board head surface will be different due to the different force applied, so that after the lead bridge welding, there will be gaps due to poor cleanliness, which will affect the pole. The heat and energy transfer coefficient between plates.

3. Because it is labor-intensive and time-consuming to directly scrub the surface of the board head with a steel brush, the required labor cost is also relatively high.

4. Because the steel brush is used to directly scrub the surface of the board head, lead dust will be generated by the steel brush rubbing against the board head during the cleaning process, which is harmful to the environment and human body, so dust collection facilities must be installed.

5. The traditional way of cleaning the plate head is to stack the anode plate and the cathode plate separately, and then manually clean the surface of the plate head one by one with a steel brush, and then stack the anode plate head and the cathode plate head alternately after cleaning. Therefore, the cleaning process is relatively complicated and wastes man-hours.

Now, the present inventors have developed the present invention in view of the deficiencies in the practical implementation of the above-mentioned cleaning methods.

Contents of the invention

The main purpose of the present invention is to provide a method for cleaning the head of the battery plate, which mainly uses laser technology to remove the dirt on the surface of the head or the oxides and dust generated on the surface, so that the surface of the head can be cleaned to obtain good cleanliness. It is beneficial to the welding of lead bridges and avoids the generation of gaps, while not affecting the heat and energy transfer coefficient between the plates.

The above-mentioned main purpose and effect of the present invention are achieved by the following specific technical means:

A method for cleaning the plate head of a battery plate, which uses a laser to treat the surface of the plate head of the battery plate, so that the surface of the plate head is removed from the surface of the plate due to the removal of attached dirt or oxides and dust generated on the surface. The microstructure after descaling is produced on the head surface.

The method for cleaning the head of the battery plate as described above, wherein the depth of the microstructure after descaling is 0.01 mm to 0.1 mm.

The method for cleaning the head of a battery plate as described above, wherein the microstructure distribution after descaling has at least one microstructure after descaling in the area of 0.01 mm ² to 0.05 mm ² .

The method for cleaning the head of a battery plate as described above, wherein the battery plate includes an anode plate and a cathode plate, and before performing the cleaning step of the surface treatment, first clean the respective stacked anode plates and the cathode plates Plates and separators are stacked alternately, and the laser is used again to clean the plate heads of the battery plates.

The advantages of the present invention are:

1. Because the surface of the board head is cleaned by laser, and the depth of the descaling microstructure on the surface of the board head after cleaning is 0.01mm ~ 0.1mm, and the density of the distribution is 0.01mm ² ~ 0.05mm ² , there is at least one descaling area. The post-scaling microstructure is the set value, so the cleanliness of the surface of the board head can be made consistent, and the thickness of the board head will not be made thinner and thinner.

2. Because the surface of the board head is cleaned by laser, and the depth of the descaling microstructure on the surface of the cleaned board head is set to be 0.01mm~0.1mm, and the density of the distribution is at least within the area of 0.01mm ² to 0.05mm ² There is a microstructure after descaling, which can make the surface of the plate head consistent in cleanliness, and greatly reduce the gap between the plate heads of each pole piece after lead bridge welding, so as to avoid affecting the heat and energy conduction coefficient between the plates.

3. Because the surface of the board head is cleaned by laser, it not only saves labor and time, but also requires lower labor costs.

4. Because the surface of the board head is cleaned by laser, there will be no debris during the cleaning process, which will not affect the cleanliness of the board head. In addition, only a small amount of lead fume will be produced during the cleaning process. It is only necessary to set up a wet dust collection facility with a small suction volume, and a large waste gas recovery device is not required.

5. The present invention directly stacks the stacked anode plates, cathode plates and separators in a staggered manner before performing the cleaning step of the plate head surface treatment of the cathode and anode plates, and uses the laser to stagger the stacked anode plates and cathode plates again. The board head is cleaned, so the cleaning process is more convenient, simple, trouble-saving and labor-saving.

Description of drawings

Figure 1 is the situation of the surface of the head without surface cleaning (surface treatment).

Fig. 2 cleans (surface treats) the surface of the board head with laser energy intensity that can produce a microstructure after descaling with a depth of 0.01 mm on the surface of the board head, and the situation of cleaning the surface of the back head.

Fig. 3 cleans (surface treats) the surface of the board head with laser energy intensity that can produce a microstructure after descaling with a depth of 0.05 mm on the surface of the board head, and the situation of cleaning the surface of the head.

FIG. 4 is a partially enlarged view of FIG. 3 .

Fig. 5 cleans (surface treats) the surface of the board head with laser energy intensity that can produce a microstructure after descaling with a depth of 0.1 mm on the surface of the board head, and the situation of cleaning the surface of the head.

Figure 6 shows the appearance of one side of the board head after laser cleaning, while the other side is not cleaned and descaled.

Figure 7A is a cut surface situation where one side of the head is laser cleaned, and the other side is not cleaned and descaled.

Fig. 7B is a comparison of the cut surface of the laser-cleaned surface and the uncleaned surface of the plate head after lead bridge welding in the state of Fig. 7A.

Fig. 7C is an enlarged view of Fig. 7B.

detailed description

In order to have a more complete and clear disclosure of the technical content used in the present invention, the purpose of the invention and the effects achieved, it will be described in detail below, and please also refer to the disclosed drawings and drawing numbers:

The method for cleaning the plate head of the battery pole plate of the present invention is mainly to carry out the cleaning step of the plate head before the plate head of the battery pole plate is welded by lead bridge, so that the plate head can reduce the dirt or surface attached to the surface after cleaning. The oxides and dust generated are beneficial to the combination with the lead bridge and the head, and avoid the gaps generated during the welding process of the lead bridge due to the dirt on the surface or the oxides and dust generated on the surface, which will lead to the conduction of heat and energy The problem of falling coefficients.

The method for cleaning the plate head of the battery pole plate of the present invention is to carry out the surface treatment of the plate head of the battery pole plate with laser, so that the surface of the plate head will be clean on the plate due to the removal of attached dirt or oxides and dust generated on the surface. The microstructure after descaling is produced on the surface of the head. The depth of these microstructures after descaling is 0.01mm~0.1mm, and the density of the distribution is at least one microstructure after descaling in the area of 0.01mm ² ~0.05mm ² structure.

Please refer to Figure 1, which is the condition of the surface of the board head without surface cleaning (surface treatment). The surface of the head is cleaned (surface treated) with laser energy intensity that can produce a microstructure after descaling at a depth of 0.01 mm on the surface of the head. The surface of the head after cleaning, in this figure, the dirt attached to the surface of the head or the surface generated Due to the removal of oxides and dust, the metal light appears; please refer to Figure 3, the surface of the board head is cleaned (surface treated) with the laser energy intensity that can produce a microstructure with a depth of 0.05mm on the surface of the board head after descaling , the situation of the surface of the head after cleaning. In this figure, the dirt attached to the surface of the head or the oxides and dust generated on the surface are removed, showing a metallic light. Figure 4 is a partial enlarged view of Figure 3; please refer to Figure 5 , is to clean (surface treat) the surface of the head with the laser energy intensity that can produce a microstructure after descaling with a depth of 0.1mm on the surface of the head. The dirt or oxides and dust generated on the surface, but because the laser energy is too strong, it will cause carbonization, but there is no cleaning effect. It can be seen from Figures 1 to 5 that the laser method can indeed remove the dirt on the surface of the board head or the oxides and dust generated on the surface, but the laser energy intensity must be set to avoid carbonization on the surface of the board head.

Please refer to Figure 6, which is the appearance of laser cleaning on one side of the board head, and the other side is not cleaned and descaled; please refer to Figure 7A, which is the cutting surface of one side of the board head which is laser cleaned, and the other side is not cleaned and descaled Situation, Fig. 7B is after the lead bridge welding is carried out under the state of Fig. 7A, the laser cleaning surface of the pole plate head and the cutting surface of the uncleaned surface are contrasted, and Fig. 7C is an enlarged view of Fig. 7B, from Fig. 7A, Fig. It can be clearly seen in 7C that there is no gap after lead bridge welding on the laser clean surface of the plate head, but there is a gap after lead bridge welding on the uncleaned surface of the plate head.

Since the present invention uses laser to clean the surface of the board head, and the intensity of laser energy is within the range of 0.01 mm to 0.1 mm and the density of the distribution of the microstructure after descaling on the surface of the cleaned board head to 0.01 ^mm2 to 0.05 ^mm2 At least one microstructure after descaling is the set value, so the cleanliness of the surface of the plate head can be made consistent, the thickness of the plate head will not become thinner, and the number of plate heads welding each pole piece with a lead bridge can be greatly reduced. The resulting gap avoids affecting the heat and energy transfer coefficient between the plates, and does not use manual cleaning, which not only saves labor and time, but also requires low labor costs, especially during the cleaning process. The situation of chip falling will not affect the cleanliness of the board head, and will not produce dust, which will affect the human body and the environment.

Claims (5)

1. a kind of battery pole plates wrench clean method, it is characterised in that be the wrench that battery pole plates are carried out with laser Surface treatment, makes the wrench surface because removing oxide, the dust that the dirt of attachment removal or surface are produced, and in institute State wrench surface and produce micro-structural after scale removal.

2. battery pole plates wrench clean method as claimed in claim 1, it is characterised in that the laser is with energy The energy intensity of micro-structural cleans institute after depth is produced on the wrench surface for the 0.01mm~0.1mm scale removal State wrench surface.

3. battery pole plates wrench clean method as claimed in claim 1 or 2, it is characterised in that the laser is The wrench surface is cleaned with the energy intensity that micro-structural after the scale removal can be produced on the wrench surface；The scale removal The density of cavity disperse characteristic is in 0.01mm afterwards²~0.05mm²Region in micro- knot after at least one described scale removal Structure.

4. battery pole plates wrench clean method as claimed in claim 3, it is characterised in that the battery pole plates bag Positive plate and minus plate are included, in carrying out before the cleaning of the surface treatment, first by the positive plate each stacked It is staggeredly stacked with the minus plate and dividing plate, again using the wrench of battery pole plates described in the laser cleaning.

5. battery pole plates wrench clean method as claimed in claim 1 or 2, it is characterised in that the battery pole Plate includes positive plate and minus plate, in carrying out before the cleaning of the surface treatment, first by the sun each stacked Pole plate is staggeredly stacked with the minus plate and dividing plate, again using the plate of battery pole plates described in the laser cleaning Head.