CN112242568A - A kind of pole plate connection method of lead-acid battery - Google Patents

A kind of pole plate connection method of lead-acid battery Download PDF

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CN112242568A
CN112242568A CN202011023212.3A CN202011023212A CN112242568A CN 112242568 A CN112242568 A CN 112242568A CN 202011023212 A CN202011023212 A CN 202011023212A CN 112242568 A CN112242568 A CN 112242568A
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mold
cavity
fusible metal
welded
lead
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CN112242568B (en
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丁建华
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Lead Lithium Zhixing Beijing Technology Co ltd
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Bengbu Ruide New Energy Technology Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/06—Lead-acid accumulators
    • H01M10/12—Construction or manufacture
    • H01M10/14—Assembling a group of electrodes or separators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本发明涉及一种铅酸蓄电池的极板连接方法，将极群的极耳深入模具内；对所述模具内的可熔金属进行热熔；待所述可熔金属熔化为液态后，冷却凝固并与所述极耳连为一体；脱模。本发明的制造方法，效率高、成本低。

Figure 202011023212

The invention relates to a method for connecting pole plates of a lead-acid battery. The pole ears of a pole group are deep into a mold; the fusible metal in the mold is hot-melted; after the fusible metal is melted into a liquid state, it is cooled and solidified And it is integrated with the pole ear; demoulding. The manufacturing method of the present invention has high efficiency and low cost.

Figure 202011023212

Description

Polar plate connecting method of lead-acid storage battery
Technical Field
The invention relates to the field of lead-acid storage battery manufacturing.
Background
The connection technology of the lead-acid storage battery pole plates in the prior art adopts a manual welding mode or a welding mode through a cast-weld machine, the manual welding can generate a large amount of toxic gas, the health is not facilitated, the production efficiency is also seriously influenced, an empty welding phenomenon exists in the welding mode of the cast-weld machine on one hand, the battery quality is influenced, and the cast-weld machine is low in efficiency and high in cost on the other hand.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for connecting polar plates of a lead-acid storage battery, which is characterized in that the polar lugs of a polar group are deeply inserted into a die; carrying out hot melting on the fusible metal in the mold; after the meltable metal is melted into a liquid state, cooling and solidifying; and (6) demolding.
Furthermore, the hot melting mode is to heat the fusible metal in the mold by electrifying.
Further, the hot melting mode is that the fusible metal in the mold is subjected to microwave heating.
Furthermore, the mode of inserting the pole lugs of the pole group into the mold is that the mold moves towards the pole lugs of the pole group.
Further, the mold is located below the tabs of the pole group.
Further, before the pole lugs of the pole group are deeply inserted into the die, the step of placing the pole group into a battery shell is also included.
Further, the mold is mounted on the battery case.
Further, the fusible metal in the mold is lead.
Further, the mold is provided with a first cavity, the fusible metal is located in the first cavity, and the tab penetrates into the first cavity.
Further, the mold is provided with a first cavity and a second cavity, the fusible metal is located in the first cavity, and the tab penetrates into the second cavity. The first cavity is in communication with the second cavity.
The invention also discloses a die, a using method of the die and a welding method.
The pole plate connecting method has high efficiency and low cost.
Drawings
FIG. 1 is a schematic diagram of a lead acid battery of the present invention with the battery cover removed;
FIG. 2 is a schematic view of a single pole group of a lead acid battery of the present invention;
FIG. 3 is a cross-sectional view of the inventive die;
FIG. 4 is a schematic view of the tab welding of the lead acid battery of the present invention;
FIG. 5 is a schematic view of a mold installation according to another embodiment of the present invention;
fig. 6 is a schematic view of a mold according to another embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the specific drawings.
As shown in fig. 1 and 2, the lead-acid storage battery of the invention comprises a battery shell 1, a pole group 2 arranged on the battery shell 1, a pole group 2 and a pole plate, wherein the pole plate is provided with a pole ear 3, and a bus bar 10 for connecting the pole ear.
As shown in fig. 3, the die 4 includes a die housing 5, a cavity 6 is disposed in the housing 5, the cavity 6 is used for receiving a body to be welded, such as the electrode group 2, a fusible metal 7 is disposed in the cavity 6, the fusible metal 7 is preferably a metal lead, a positive electrical connection port 8 and a negative electrical connection port 9 are formed on the housing 5 of the die 4, the positive electrical connection port 8 and the negative electrical connection port 9 are electrically connected to two ends 7a and 7b of the fusible metal 7, respectively, and the positive electrical connection port 8 and the negative electrical connection port 9 are electrically connected to an external power source through a conducting wire. The metal lead can use lead bars or lead wires and other lead with different shapes and sizes according to the requirements, does not achieve better hot melting effect, has the cross section size as small as possible and the length size as large as possible, and thus has large resistance and good hot melting effect. As another embodiment, the positive electrical connection port 8 and the negative electrical connection port 9 on the housing 5 of the mold 4 may be replaced with a microwave source, such as an electromagnetic wave, or other source that heats and melts the metal, at the corresponding locations. In addition, in order to achieve a better heat fusing effect, a positive electrical connection port 8 and a negative electrical connection port 9 and a wave source can be arranged on the housing 5 of the die 4 at the same time to realize heat fusing of the metal lead.
As shown in fig. 4, a method for connecting pole plates of a lead-acid storage battery comprises the following steps that a pole lug 3 of a pole group penetrates into a cavity 6 of a mold 4 (metal lead 7 can be shown in fig. 4, and the pole lug 3 does not penetrate into the bottom of the cavity 6); the positive electric connection port 8 and the negative electric connection port 9 on the shell 5 are externally connected with a power supply (not shown in the figure) through leads, metal lead in the cavity 6 of the die 4 is electrified, the temperature of the metal lead is continuously increased due to the passing of current in the metal lead and the resistance of the metal lead, the metal lead is continuously melted into liquid lead, the melted liquid lead is fused with the pole lugs of the pole plates, the current passing pole lugs fused with the liquid lead and the surface resistance of the pole lugs passing the current are large, so that the temperature of the pole lugs passing the current is increased, lead oxide and lead sulfate on the surface of the pole lugs can fall off from the surfaces of the pole lugs, the melted liquid lead is favorably fused with the pole lugs of the pole plates, and in addition, the density of the lead oxide and the lead sulfate is lower than that of the liquid lead; disconnecting the external power supply; and demolding the mold 4 after the liquid lead is cooled and solidified with the pole lugs. Lead oxide and lead sulfate can be finally formed on the surface of the bus bar formed after liquid lead is cooled, and the electric conduction is basically not influenced.
The pole group 2 can be put into the battery shell 1 to be completely put into the groove, and then the tab 3 of the pole group 2 is deeply inserted into the cavity 6 of the die 4 to be die-welded; or the tab 3 of the electrode group 2 is placed into the battery shell 1 and is completely put into the groove after being welded and demoulded. In addition, since the weight of the die is much lighter than the weight of the body to be welded, such as a pole group, the way in which the tab 3 of the pole group 2 of the present invention is inserted into the cavity 6 of the die 4 is preferably that the die 4 is moved in the direction of the tab 3 of the pole group 2, and further, in order to avoid the liquid lead from dripping onto the body to be welded, such as a pole group, during welding, the die 4 is preferably located below the tab 3 of the pole group 2. Of course, the manner of inserting the tab 3 of the electrode group 2 into the cavity 6 of the mold 4 may also be that the mold 4 moves from the top to the direction of the tab 3 of the electrode group 2, as shown in fig. 5 and 6, the mold 4 has a cavity 6, a fusible metal such as lead (not shown in the figures) is placed in the cavity 6, the cavity 6 has a bottom 12, a tab hole 11 is formed on the bottom 12, the mold 4 moves from the top to the direction of the tab 3 of the electrode group 2, that is, the tab 3 passes through the tab hole 11, and the bottom 12 of the cavity 6 realizes the isolation and sealing of the tab to be welded and the tab below. The mold 4 may be mounted on the battery case or on the body to be welded, such as a tab, or fixed by other means, as desired. According to the invention, the metal lead is electrified and melted, so that the melting of the metal lead is realized, and impurities such as lead oxide and lead sulfate on the surface of the tab are effectively removed, so that the welding effect is ensured, and the defect that the surface of the tab needs to be polished by a traditional welding machine is avoided.
Alternatively, the metallic lead in the cavity 6 of the mould 4 may be heated by microwaves to form liquid lead, and the object of the invention may be achieved.
The polar plate connecting method of the lead-acid storage battery can also realize the aim of the invention by firstly carrying out hot melting on the fusible metal in the mould and then inserting the polar lugs of the polar group into the mould.
The method for using the mold of the present invention, the first embodiment method: a body to be welded, such as a tab, is inserted into a cavity of the mold; energizing a fusible metal, such as lead, disposed within the mold cavity to fuse; after the liquid state is formed, the power is cut off, and the die is demolded after the liquid state is cooled and solidified with the body to be welded. The second embodiment: a body to be welded, such as a tab, is inserted into a cavity of the mold; microwave melting of a fusible metal such as lead disposed within the mold cavity; and after the liquid state is formed, closing the microwave, cooling and solidifying the microwave and the body to be welded, and demolding. In addition, the use method of the mold can also melt the fusible metal arranged in the cavity of the mold; then the body to be welded is inserted into the cavity of the mould.
In addition, the welding method of the invention can be applied to welding the battery tab and can also be applied to other occasions needing welding. When the method is applied to other occasions, the body to be welded is only required to be inserted into the cavity of the die, namely the welding part of the body to be welded is ensured to be inserted into the cavity, and the fusible metal arranged in the cavity of the die is subjected to electrified hot melting or microwave hot melting to be melted into liquid; after the solid metal is melted into liquid state; and demolding after the liquid metal is cooled and solidified with the body to be welded. Also, the body to be welded is preferably inserted into the cavity of the mold by moving the mold from below to the body to be welded located above. In the welding method, the fusible metal arranged in the cavity of the die can be melted; then the body to be welded is inserted into the cavity of the mould.
In addition, the fusible metal and the part to be welded of the body to be welded can be in the same cavity or different cavities, and as long as the cavities are communicated, the liquid metal can circulate and can realize welding, namely, the die is provided with a first cavity and a second cavity, the fusible metal such as lead is positioned in the first cavity, the part to be welded of the body to be welded is positioned in the second cavity, the first cavity is communicated with the second cavity, and the liquid metal can flow into the second cavity from the first cavity, so that the welding of the body to be welded is realized.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.

Claims (28)

1.一种铅酸蓄电池的极板连接方法，其特征在于，将极群的极耳深入模具内；对所述模具内的可熔金属进行热熔；待所述可熔金属熔化为液态后，冷却凝固并与所述极耳连为一体；脱模。1. a pole plate connection method of a lead-acid battery, is characterized in that, the pole lug of the pole group is deeply in the mould; the fusible metal in the described mould is hot-melted; after the described fusible metal is melted into a liquid state; , cooled and solidified and integrated with the tab; demoulding. 2.如权利要求1所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述热熔方式为通过对所述模具内的可熔金属进行通电热熔。2 . The method for connecting the pole plates of a lead-acid battery according to claim 1 , wherein the hot-melting method is to energize and hot-melt the fusible metal in the mold. 3 . 3.如权利要求1所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述热熔方式为通过对所述模具内的可熔金属进行微波热熔。3 . The method for connecting pole plates of a lead-acid battery according to claim 1 , wherein the hot-melting method is to perform microwave hot-melting on the fusible metal in the mold. 4 . 4.如权利要求1所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述将极群的极耳深入模具内的步骤由对所述模具内的可熔金属进行热熔的步骤代替，所述对所述模具内的可熔金属进行热熔的步骤由将极群的极耳深入模具内的步骤代替。4. the pole plate connection method of a kind of lead-acid battery as claimed in claim 1, is characterized in that, the described step that the pole lug of the pole group is deep in the mould is performed by hot-melting the fusible metal in the mould The step of hot-melting the fusible metal in the mold is replaced by the step of digging the pole ears of the pole group into the mold. 5.如权利要求1-4任意一项所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述极群的极耳深入模具内的方式为所述模具向所述极群的极耳方向移动。5. The method for connecting the pole plates of a lead-acid battery according to any one of claims 1 to 4, wherein the way in which the tabs of the pole group go deep into the mold is that the mold moves toward the pole group. move in the direction of the polar ear. 6.如权利要求5所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述模具位于所述极群的极耳的下方。6 . The method for connecting pole plates of a lead-acid battery according to claim 5 , wherein the mold is located below the tabs of the pole group. 7 . 7.如权利要求1-4任意一项所述的一种铅酸蓄电池的极板连接方法，其特征在于，将所述极群的极耳深入所述模具内之前，还有将所述极群放入电池壳体内的步骤。7. The method for connecting the pole plates of a lead-acid battery according to any one of claims 1 to 4, characterized in that, before the pole lugs of the pole group are penetrated into the mold, the pole The steps of placing the group into the battery case. 8.如权利要求7所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述模具安装在所述电池壳体上。8 . The method for connecting pole plates of a lead-acid battery according to claim 7 , wherein the mold is mounted on the battery case. 9 . 9.如权利要求1-4任意一项所述的一种铅酸蓄电池的极板连接方法，其特征在于，所述模具内的可熔金属是铅。9 . The pole plate connection method of a lead-acid battery according to claim 1 , wherein the fusible metal in the mold is lead. 10 . 10.如权利要求1-4任意一项所述的一种铅酸蓄电池的制造方法，其特征在于，所述模具具有第一空腔，所述可熔金属位于所述第一空腔内，所述极耳深入所述第一空腔内。10. The method for manufacturing a lead-acid battery according to any one of claims 1 to 4, wherein the mold has a first cavity, and the fusible metal is located in the first cavity, The tabs penetrate deep into the first cavity. 11.如权利要求1-4任意一项所述的一种铅酸蓄电池的制造方法，其特征在于，所述模具具有第一空腔和第二空腔，所述可熔金属位于所述第一空腔内，所述极耳深入所述第二空腔内。所述第一空腔与所述第二空腔连通。11. The method for manufacturing a lead-acid battery according to any one of claims 1 to 4, wherein the mold has a first cavity and a second cavity, and the fusible metal is located in the first cavity. In a cavity, the tabs penetrate deep into the second cavity. The first cavity communicates with the second cavity. 12.一种模具，包括壳体、壳体内形成有空腔，其特征在于，所述空腔用于安装可熔金属。12. A mold, comprising a shell, and a cavity is formed in the shell, wherein the cavity is used for installing a fusible metal. 13.如权利要求12所述的模具，其特征在于，所述壳体上设置有正负电连接端口，所述正负电连接端口可与所述可熔金属形成电连接。13 . The mold of claim 12 , wherein positive and negative electrical connection ports are provided on the housing, and the positive and negative electrical connection ports can be electrically connected to the fusible metal. 14 . 14.如权利要求12所述的模具，其特征在于，所述壳体上设置有用于热熔可熔金属的微波源。14. The mold of claim 12, wherein a microwave source for hot-melting fusible metal is provided on the shell. 15.如权利要求12-14任意一项所述的模具，其特征在于，所述可熔金属为铅块。15. The mold according to any one of claims 12-14, wherein the fusible metal is a lead block. 16.如权利要求12-14任意一项所述的模具，其特征在于，所述模具具有第一空腔，所述可熔金属位于所述第一空腔内。16. The mold of any one of claims 12-14, wherein the mold has a first cavity, and the fusible metal is located in the first cavity. 17.如权利要求12-14任意一项所述的模具，其特征在于，所述模具具有第一空腔和第二空腔，所述可熔金属位于所述第一空腔内，所述第一空腔与所述第二空腔连通。17. The mold according to any one of claims 12-14, wherein the mold has a first cavity and a second cavity, the fusible metal is located in the first cavity, the The first cavity communicates with the second cavity. 18.如权利要求12-14任意一项所述的模具，其特征在于，所述模具应用于铅酸蓄电池的极群焊接。18. The mold according to any one of claims 12 to 14, wherein the mold is used for pole group welding of lead-acid batteries. 19.如权利要求12-14任意一项所述的模具使用方法，其特征在于，将待焊本体深入所述模具空腔内；将设置在所述模具空腔内的可熔金属熔化；待所述可熔金属熔化为液态后，冷却并与待焊本体凝固后；脱模。19. The method for using a mold according to any one of claims 12 to 14, wherein the body to be welded is deep into the mold cavity; the fusible metal disposed in the mold cavity is melted; After the fusible metal is melted into a liquid state, it is cooled and solidified with the body to be welded; demolding. 20.如权利要求12-14任意一项所述的模具使用方法，其特征在于，将设置在所述模具空腔内的可熔金属熔化；将待焊本体深入所述模具空腔内；待所述可熔金属熔化为液态后，冷却并与待焊本体凝固后；脱模。20. The method for using a mold according to any one of claims 12 to 14, wherein the fusible metal disposed in the mold cavity is melted; the body to be welded is deep into the mold cavity; After the fusible metal is melted into a liquid state, it is cooled and solidified with the body to be welded; demolding. 21.一种待焊接本体的焊接方法，其特征在于，将待焊本体深入模具内；对设置在模具内的可熔金属的进行熔化，形成液态后，冷却并与待焊本体凝固后；脱模。21. A welding method for a body to be welded, characterized in that, the body to be welded is deep into the mold; the fusible metal disposed in the mold is melted to form a liquid state, cooled and solidified with the body to be welded; mold. 22.如权利要求21所述的一种待焊接本体的焊接方法，其特征在于，所述壳体上设置有正负电连接端口，所述正负电连接端口分别与所述可熔金属形成电连接。22. The welding method of a body to be welded according to claim 21, wherein positive and negative electrical connection ports are provided on the housing, and the positive and negative electrical connection ports are respectively formed with the fusible metal. electrical connection. 23.如权利要求21所述的一种待焊接本体的焊接方法，其特征在于，所述壳体上设置有用于熔化所述可熔金属微波源。23. The welding method for bodies to be welded according to claim 21, wherein a microwave source for melting the fusible metal is provided on the casing. 24.如权利要求21所述的一种待焊接本体的焊接方法，其特征在于，所述将待焊本体深入模具内的步骤由对设置在模具内的可熔金属的进行熔化的步骤代替，所述对设置在模具内的可熔金属的进行熔化的步骤由述将待焊本体深入模具内的步骤代替。24. The welding method of a body to be welded according to claim 21, wherein the step of penetrating the body to be welded into the mold is replaced by the step of melting the fusible metal disposed in the mold, The step of melting the fusible metal disposed in the mold is replaced by the step of penetrating the body to be welded into the mold. 25.如权利要求21-24意一项所述的一种待焊接本体的焊接方法，其特征在于，所述模具具有壳体，所述壳体内形成有第一空腔，所述第一空腔内安装有可熔金属。25. The welding method of a body to be welded according to any one of claims 21 to 24, wherein the mold has a shell, and a first cavity is formed in the shell, and the first cavity is A fusible metal is installed in the cavity. 26.如权利要求25述的一种待焊接本体的焊接方法，其特征在于，所述壳体内形成有第二空腔，所述待焊本体深入所述所述第二空腔内。26 . The method for welding a body to be welded according to claim 25 , wherein a second cavity is formed in the casing, and the body to be welded penetrates into the second cavity. 27 . 27.如权利要求21-24意一项所述的一种待焊接本体的焊接方法，其特征在于，所述待焊本体深入模具内的方式为所述模具向所述待焊本体的方向移动。27. The welding method of a body to be welded according to any one of claims 21 to 24, wherein the way the body to be welded goes deep into the mold is that the mold moves in the direction of the body to be welded . 28.权利要求27所述的一种待焊接本体的焊接方法，其特征在于，所述模具位于所述待焊本体的下方。28. The method for welding a body to be welded according to claim 27, wherein the mold is located below the body to be welded.
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US20220069422A1 (en) * 2020-08-31 2022-03-03 Apple Inc. Cast-in-place busbars for battery pack

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