阅读说明：本技术 一种铅蓄电池用板栅及其制备方法 (Grid for lead storage battery and preparation method thereof ) 是由 王新虎 刘孝伟 于 2020-05-19 设计创作，主要内容包括：本发明涉及一种铅蓄电池用板栅及其制备方法,属于铅蓄电池技术领域,用以解决现有铅蓄电池板栅腐蚀性差、铅用量大的问题。本发明的铅蓄电池用板栅,包括绝缘边框和导电部,绝缘边框用于稳固导电部,导电部用于传导电流。本发明仅在导电部处使用了铅,导致板栅铅用量大幅减少,电池正极每片板栅用铅量为12g,负极用铅量是10g(传统电池正极每片板栅用铅量的20g,负极用铅量是16g),板栅的铅用量降低40％左右；通过在铅丝外设置绝缘边框,能够有效限制活性物质的膨胀,不易发生正负物质接触短路,同时提高板栅的抗蠕变、耐腐蚀性,进而提高电池的使用寿命。(The invention relates to a grid for a lead storage battery and a preparation method thereof, belongs to the technical field of lead storage batteries, and is used for solving the problems of poor corrosion and large lead consumption of the conventional grid for the lead storage battery. The grid for the lead storage battery comprises an insulating frame and a conductive part, wherein the insulating frame is used for stabilizing the conductive part, and the conductive part is used for conducting current. According to the invention, lead is only used at the conductive part, so that the lead consumption of the grid is greatly reduced, the lead consumption of each grid of the positive electrode of the battery is 12g, the lead consumption of the negative electrode of the battery is 10g (20 g of the lead consumption of each grid of the positive electrode of the traditional battery, and 16g of the lead consumption of the negative electrode of the traditional battery), and the lead consumption of the grid is reduced by about 40%; through set up insulating frame outside the plumbous silk, can effectively restrict active material's inflation, be difficult for taking place positive negative material contact short circuit, improve creep resistance, the corrosion resistance of grid simultaneously, and then improve the life of battery.)

1. The grid for the lead storage battery is characterized by comprising an insulating frame (1) and a conductive part (2), wherein the insulating frame (1) is used for stabilizing the conductive part (2), and the conductive part (2) is used for conducting current.

2. The grid for lead-acid batteries according to claim 1, characterized in that the conductive portion (2) comprises a lead wire (21), a bus bar (22) and a tab (23), the lead wire (21) is arranged in the insulating frame (1), one side of the bus bar (22) is connected with the lead wire (21), and the other side of the bus bar (22) is connected with the tab (23).

3. The grid for lead-acid batteries according to claim 2, characterized in that said lead wire (21) is a composite lead wire.

4. The grid for lead-acid batteries according to claim 2, characterized in that the distribution of the lead wires (21) inside the insulating frame (1) is: transverse distribution along the polar plate direction, longitudinal distribution along the polar plate direction or fan-shaped distribution.

5. Grid for lead-acid batteries according to any of claims 1 to 4, characterized in that said insulating frame (1) is a plastic frame.

6. The grid for lead storage batteries according to claim 5, wherein the plastic of the plastic frame is an acid-resistant and high-temperature-resistant engineering plastic.

7. The grid for lead-acid batteries according to claim 5, characterized in that reinforcing ribs (11) are provided in the insulating frame (1).

8. A method for producing a grid for a lead-acid battery, characterized by comprising, for producing a grid for a lead-acid battery according to claims 1 to 7, the steps of:

the method comprises the following steps: preparing an insulating general frame (3), wherein the insulating general frame (3) comprises a casting area (31) and a plate grid area (32);

step two: arranging a lead wire (21) into the insulation header (3);

step three: casting lead alloy in the casting area (31) by adopting a gravity casting method, and after cooling, stamping and forming the casting area (31) to form a confluence belt (22) and a tab (23);

step four: and cutting to obtain the grid for the lead storage battery.

9. The method for preparing the grid for the lead storage battery according to claim 8, wherein in the first step, the insulation frame (3) comprises n casting areas (31) and 2n grid areas (32), n is an integer and is not less than 1, and the grid areas (32) are symmetrically distributed on two sides of the casting areas (31).

10. The method for preparing the grid for lead storage batteries according to claim 9, wherein in the second step, each lead wire (21) penetrates through the casting area (31) and the grid areas (32) on both sides of the casting area (31);

in the third step, the casting area (31) is punched and formed to form two sets of oppositely arranged bus bars (22) and lugs (23).

Technical Field

The invention relates to the field of lead storage batteries, in particular to a grid for a lead storage battery and a preparation method thereof.

Background

The lead accumulator is widely used as starting power supply, uninterrupted power supply for automobile, power supply and energy storage power supply from electric bicycle to diesel submarine, and the lead accumulator is the first to face chemical power supply for output and energy storage.

The grid of the traditional lead storage battery has three preparation methods: firstly, gravity casting is carried out, the method has wide application range, but has low efficiency and high pollution, and oxides are generated in the grid manufacturing process to cause the loss of alloy lead; the grid is punched, the method is to prefabricate the lead belt first, then process by punching a hole, its advantage is high in efficiency, but will produce 70-80% blanking while punching a hole, the energy consumption is high, and can only make the sheet bar below 1.2 mm; and thirdly, continuous casting and rolling, the method has the advantages of high efficiency and low energy consumption, but the grid is not corrosion-resistant and can only be used for manufacturing a thin grid with the thickness of less than 1.5 mm.

The glass fiber composite lead wire and the lead net grid manufactured by the textile technology are manufactured by two different manufacturing methods of weaving by a shuttleless loom and organically weaving, namely, the glass fiber composite lead wire is woven to form a net. The existing glass fiber composite lead wire is only used for manufacturing a horizontal quasi-bipolar lead-acid storage battery, but the manufacturing process of a grid of a horizontal lead-acid network battery determines that the polar plate of the horizontal lead-acid network battery has no frame, so that the active substances of the polar plate can swell around in the later period of circulation.

However, the gravity casting, the plate grid punching, the continuous casting and the continuous rolling, and the shuttle loom and the shuttleless loom have the following defects: lead is used vertically and horizontally, and the lead consumption is large; the lead mesh grid has no frame, so that the expansion of active substances cannot be limited in the charging and discharging processes of the battery, the contact short circuit of positive and negative active substances and the softening and falling of positive active substances are easy to occur, and the service life of the battery is reduced; the grid has no pole lug, the bus bar needs to be prefabricated, and then the grid is welded with the weft lead wire to form the pole lug, so that the process is complex and the efficiency is low.

Disclosure of Invention

In view of the above analysis, the embodiment of the present invention aims to provide a grid for a lead storage battery and a preparation method thereof, so as to solve the problems of poor corrosion and large lead consumption of the existing grid for the lead storage battery.

In one aspect, the invention provides a grid for a lead storage battery, which comprises an insulating frame and a conductive part, wherein the insulating frame is used for stabilizing the conductive part, and the conductive part is used for conducting current.

Furthermore, the conductive part comprises a lead wire, a bus bar and a lug, the lead wire is arranged in the insulating frame, one side of the bus bar is connected with the lead wire, and the other side of the bus bar is connected with the lug.

Further, the lead wire is a composite lead wire.

Further, the distribution mode of the lead wires in the insulating frame is as follows: transverse distribution along the polar plate direction, longitudinal distribution along the polar plate direction or fan-shaped distribution.

Further, the insulating frame is a plastic frame.

Furthermore, the plastic of the plastic frame is acid-resistant and high-temperature-resistant engineering plastic.

Furthermore, reinforcing ribs are arranged in the insulating frame.

In another aspect, the present invention provides a method for preparing a grid for a lead storage battery, which is used for preparing the grid for the lead storage battery, and comprises the following steps:

the method comprises the following steps: preparing an insulation general frame, wherein the insulation general frame comprises a casting area and a plate grid area;

step two: arranging a lead wire into the insulation general frame;

step three: casting lead alloy in a casting area by adopting a gravity casting method, and after cooling, carrying out punch forming on the casting area to form a confluence belt and a tab;

step four: and cutting to obtain the grid for the lead storage battery.

Further, in the first step, the insulation general frame comprises n casting areas and 2n grid areas, n is an integer and is not less than 1, and the grid areas are symmetrically distributed on two sides of the casting areas.

Further, in the second step, each lead wire penetrates through the casting area and the plate grid areas on two sides of the casting area;

and in the third step, the casting area is punched and formed into two sets of oppositely arranged bus bars and lugs.

Compared with the prior art, the invention can realize at least one of the following beneficial effects:

(1) lead is only used at the conductive part, so that the lead consumption of the grid is greatly reduced, the lead consumption of each grid of the positive electrode of the battery is 12g, the lead consumption of the negative electrode of the battery is 10g (20 g of the lead consumption of each grid of the positive electrode of the traditional battery, and 16g of the lead consumption of the negative electrode of the traditional battery), and the lead consumption of the grid is reduced by about 40%;

(2) the insulating frame is arranged outside the lead wire, so that the expansion of active substances can be effectively limited, the contact short circuit of positive and negative substances is not easy to occur, the creep resistance and the corrosion resistance of the grid are improved, and the service life of the battery is further prolonged;

(3) the lead wire is a composite lead wire, and the insulating frame is a plastic frame, so that in the process of charging and discharging the battery, the expansion of active substances can be limited in the cycle life, the contact short circuit of positive and negative active substances is not easy to occur, and the lead wire has the characteristics of creep resistance and strong corrosion resistance, and the service life of the battery is prolonged;

(4) the plastic frame has strong corrosion resistance and does not participate in electrode reaction, so that the service life of the grid is prolonged without a service life termination period, the bus bars and the lugs are arranged on the sides of the plastic frame, and the coating and filling reaction substances are bound by the plastic frame;

(5) the lead wire is a composite lead wire, the core wire of the composite lead wire is glass fiber or carbon fiber, the coating layer is alloy lead or solid pure lead, and the coating layer is wrapped outside the core wire through extrusion, so that the composite lead wire has stronger creep resistance and tensile resistance, and the service life of the grid is further prolonged.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

Fig. 1 is a structural view of a grid for a lead storage battery according to a first embodiment;

FIG. 2 is a structural diagram of a conductive part according to the first embodiment;

FIG. 3 is a structural view of a lead wire according to the first embodiment;

FIG. 4 is a structural diagram of an insulation block in step one of the second embodiment;

FIG. 5 is a structural diagram of an insulation block with a lead wire in step two of the second embodiment;

FIG. 6 is a structural view of an insulation block with lead wires after casting in step three of the second embodiment;

FIG. 7 is a structural diagram of the second embodiment after casting and punching an insulating frame with lead wires in the third step;

fig. 8 is a structural view of a grid for a lead-acid battery cut in step four of example two.

Reference numerals:

1-an insulating frame; 11-reinforcing ribs; 2-a conductive portion; 21-lead wire; 211-core wire; 212-a cladding layer; 22-bus bars; 23-a tab;

3-insulating general frame; 31-a casting zone; 32-plate gate region.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.

The general working surface of the invention can be a plane or a curved surface, can be inclined or horizontal. For convenience of explanation, the embodiments of the present invention are placed on a horizontal plane and used on the horizontal plane, and are defined as "high and low" and "up and down".