CN211980767U - Deep circulation power battery positive plate - Google Patents
Deep circulation power battery positive plate Download PDFInfo
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- CN211980767U CN211980767U CN202020188091.7U CN202020188091U CN211980767U CN 211980767 U CN211980767 U CN 211980767U CN 202020188091 U CN202020188091 U CN 202020188091U CN 211980767 U CN211980767 U CN 211980767U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a deep circulation power battery positive plate, which comprises a positive plate grid and a positive active substance, wherein the structure of the positive plate grid adopts a radiation type structural design; preparing a positive grid from the lead-calcium-tin-silver-selenium-lanthanum aluminum alloy through a process of belt making and net punching; adding acrylic staple fiber, active carbon, tetrabasic lead sulfate, red lead, antimony trioxide, titanium dioxide, stannous sulfate, porous glass beads, distilled water and dilute sulfuric acid into oxidized lead powder according to a formula ratio to serve as raw materials, and preparing the raw materials into a positive active substance by adopting a paste mixing process; and filling the prepared positive active substance on a positive grid, and then sending the positive active substance into a high-temperature curing chamber for curing to prepare the deep-cycle power battery positive plate. The utility model discloses the positive plate of preparation has the characteristics of power height, internal resistance are little, the battery is dark long-circulating life.
Description
Technical Field
The utility model relates to a lead accumulator technical field specifically says, relates to a dark circulation power battery positive plate.
Background
With the development of science and technology and the continuous improvement of people's living standard, electric tools and electric equipment are more and more popularized, such as electric ascending vehicles, electric cranes, electric cleaning vehicles and the like. The core component of these vehicles, the power battery, also depends primarily on the import of flooded power batteries from the united states. Therefore, such battery maintenance is troublesome, users lack knowledge of maintenance or management is not in place, and battery life is greatly reduced. By tracking the use working conditions of corresponding vehicle types and carrying out anatomical analysis on batteries after the service life of domestic power batteries is ended after application, the vehicle is generally considered to have the phenomena of high discharge power, deep cycle depth, irregular charge and discharge, violent use and overdischarge.
In the prior art, the conventional battery positive plate used for the vehicle is easy to have polarization internal resistance under the condition of large-current discharge, the corrosion resistance of the positive plate grid is usually more common, the positive active substance is easy to soften and fall off, and the binding force between the positive plate grid and the positive active substance is also common; therefore, the positive plate of the battery has low mechanical strength, general consistency of the manufactured battery, short deep cycle life of the battery and large contact resistance of an active material grid.
For this reason, a new technical solution needs to be designed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model discloses a deep cycle power battery positive plate and preparation method thereof.
The technical scheme of the utility model is that:
the positive plate of the deep-cycle power battery comprises a positive plate grid and a positive active substance, wherein the positive plate grid adopts a radiation type structural design, the positive plate grid specifically comprises a frame, a lug arranged on the frame, and a main inclined rib, a sub inclined rib and a transverse rib which are arranged in the frame, and the main inclined ribs which are separated in pairs are radiated to form the sub inclined ribs in a mode of dividing the main inclined ribs into two parts in the interval range of the two transverse ribs in the middle position of the frame.
Preferably, the upper and lower surfaces of the frame, the main diagonal rib, the sub diagonal ribs and the transverse rib are all provided with knurls.
Preferably, the positive grid is made of a lead-calcium-tin-silver-selenium-lanthanum-aluminum alloy, and the positive grid comprises the following components in percentage by weight: 0.05-0.10% of calcium, 0.8-1.5% of tin, 0.001-0.004% of silver, 0.02-0.10% of selenium, 0.02-0.08% of lanthanum, 0.03-0.05% of aluminum and the balance of lead.
Preferably, the positive grid is manufactured by adopting a belt manufacturing and net punching preparation process, the lead-calcium-tin-silver-selenium-lanthanum-aluminum alloy is firstly melted, a lead belt with the width of 380mm and the thickness of 0.8mm is prepared through multi-stage rolling, then the grid is prepared by utilizing net punching equipment (punching equipment or punching equipment sold in the market can be selected), pollutants on the surface of the grid are cleaned by using ultrasonic waves after the net punching, and meanwhile, knurling is added on the surface of the grid, namely, the roughening treatment is carried out.
Preferably, the positive electrode active material includes, by mass: lead powder with the oxidation degree of 72-85%, acrylic staple fiber 0.07-0.15%, active carbon 0.3-0.6%, tetrabasic lead sulfate 1-5%, red lead 5-15%, antimony trioxide 0.08-0.2%, titanium dioxide 0.05-0.1%, stannous sulfate 0.08-0.2%, porous glass micro-beads 0.3-1%, distilled water 10-15%, and dilute sulfuric acid 8-10% with the density of 1.450 g/ml.
Preferably, the preparation process of the positive electrode active material comprises the following steps: putting the lead powder, acrylic staple fiber, activated carbon, tetrabasic lead sulfate, red lead, antimony trioxide, titanium dioxide, stannous sulfate and porous glass beads in a formula amount into a vacuum paste mixing machine for dry stirring for 2-5 min, then quickly adding distilled water in the formula amount, continuously stirring for 3-5 min, adding dilute sulfuric acid in the formula amount of 1.450g/ml for 4 times, controlling the vacuum degree in the process, controlling the reaction to be kept for 5min at the temperature of 75-80 ℃ by utilizing the heat generated by the reaction of the sulfuric acid and the lead oxide, finally stirring for 3-5 min, testing the apparent specific gravity of 4.3-4.6 g/cm3, and mixing the paste.
Preferably, the vacuum degree during four times of adding the dilute sulfuric acid is controlled as follows: 380mbar, 330mbar, 280mbar and 260 mbar.
A preparation method of a deep cycle power battery positive plate comprises the steps of filling the prepared positive active substance on a positive grid by adopting continuous plate coating equipment according to the standard of 380 +/-5 g, putting 15-20 positive grids in a stacking mode, and conveying the positive grids into a high-temperature curing chamber for curing, wherein the curing process is as follows:
and after solidification, testing that the water content in the active substance of the positive plate is less than or equal to 0.5 percent, the free lead content is less than or equal to 8 percent, and finishing the preparation of the positive plate.
The utility model has the advantages that: the positive plate grid adopts a radiation type structural design, so that the polarization internal resistance of the positive plate under the condition of large-current discharge is effectively reduced; the positive grid adopts a preparation process of belt making and net punching, the alloy of the positive grid is subjected to multi-stage rolling, the material is compact, the corrosion resistance of the positive grid can be effectively improved, knurling is added on the surface of the positive grid, the binding force between the positive grid and positive active substances can be effectively improved, and the contact resistance between the grid and the positive active substances is reduced; the positive active substance prepared by adopting the formula and the paste mixing process of the utility model has the characteristics of high porosity, low shrinkage-expansion ratio of the positive active substance under deep circulation and difficult softening and dropping of the positive active substance; the positive plate prepared by the utility model has the characteristics of high power, small internal resistance and long battery deep cycle life; the utility model discloses the finished product battery that the positive plate of preparation, according to internalization formation battery production technology made compares with ordinary battery, and polar plate mechanical strength is high, the battery uniformity is good, active material grid contact resistance is little, the battery is long in deep cycle life.
Drawings
Fig. 1 is a schematic structural diagram of the positive grid of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Wherein: 1. the electrode lug is 2, the main inclined rib is 3, the sub inclined rib is 4, the frame is 5, the transverse rib is 6 and the knurl is formed.
Detailed Description
Example 1
As shown in fig. 1 and 2, the deep cycle power battery positive plate comprises a positive plate grid and a positive active material, wherein the positive plate grid adopts a radiation type structural design, the positive plate grid specifically comprises a frame 4, a tab 1 arranged on the frame 4, and a main diagonal rib 5, a sub diagonal rib 3 and a transverse rib 5 which are arranged in the frame 4, and the sub diagonal ribs 3 are formed by radiation in a manner of dividing two main diagonal ribs 2 which are spaced in pairs into two parts within the interval range of the two transverse ribs 5 on the middle position of the frame.
The positive grid is made of a lead-calcium-tin-silver-selenium-lanthanum aluminum alloy material, and the positive grid comprises the following components in percentage by weight: 0.08 percent of calcium, 0.125 percent of tin, 0.25 percent of silver, 0.02 percent of selenium, 0.03 percent of lanthanum and 0.035 percent of aluminum.
The positive grid is manufactured by adopting a belt manufacturing and net punching preparation process, firstly, a lead-calcium-tin-silver-selenium-lanthanum-aluminum alloy is melted, a lead belt with the width of 380mm and the thickness of 0.8mm is prepared through multi-stage rolling, then, a grid is prepared by utilizing net punching equipment, pollutants on the surface of the grid are cleaned by using ultrasonic waves after the net punching, and meanwhile, knurling is added on the surface of the grid, namely, rough treatment is performed.
The positive active material comprises the following components in percentage by mass: 0.08% of acrylic staple fiber, 0.4% of activated carbon, 3% of tetrabasic lead sulfate, 10% of red lead, 0.1% of antimony trioxide, 0.05% of titanium dioxide, 0.2% of stannous sulfate, 0.5% of porous glass micro-beads, 10% of distilled water, 1.450g/ml of dilute sulfuric acid, and the balance of lead powder with the oxidation degree of 72-85%.
The preparation process of the positive active material comprises the following steps: putting the lead powder, acrylic staple fiber, activated carbon, tetrabasic lead sulfate, red lead, antimony trioxide, titanium dioxide, stannous sulfate and porous glass beads in a formula amount into a vacuum paste mixing machine for dry stirring for 2-5 min, then quickly adding distilled water in the formula amount, continuously stirring for 3-5 min, adding dilute sulfuric acid in the formula amount of 1.450g/ml for 4 times, controlling the vacuum degree in the process, controlling the reaction to be kept for 5min at the temperature of 75-80 ℃ by utilizing the heat generated by the reaction of the sulfuric acid and the lead oxide, finally stirring for 3-5 min, testing the apparent specific gravity of 4.3-4.6 g/cm3, and mixing the paste.
The vacuum degree in the four times of dilute sulfuric acid addition processes is sequentially controlled as follows: 380mbar, 330mbar, 280mbar and 260 mbar.
The preparation method of the deep cycle power battery positive plate comprises the following steps of filling the prepared positive active substance on a positive grid by adopting continuous plate coating equipment according to the standard of 380 +/-5 g, stacking 15-20 positive grids, and conveying the positive grids into a high-temperature curing chamber for curing, wherein the curing process is as follows:
and after solidification, testing that the water content in the active substance of the positive plate is less than or equal to 0.5 percent, the free lead content is less than or equal to 8 percent, and finishing the preparation of the positive plate.
The finished battery product internalized by the positive plate of the embodiment has the highest capacity of 226 Ah for three times, the discharge capacity of 3.6C3 is 196 min, and the 100 percent DOD cycle life is 675 times; the maximum three-time capacity of the conventional battery is 212 Ah, the 3.6C3 discharge capacity is 162 min, and the 100 percent DOD cycle life is 432 times. Dissecting the battery internalized by the positive plate of the embodiment after the service life is ended, wherein the positive plate grid is intact, and the positive active substance falls off normally; the positive grid of the conventional battery is seriously corroded, the ribs are brittle and broken, and the positive active substances are completely argillized after being blocked and falling off.
Example 2
The positive grid is made of a lead-calcium-tin-silver-selenium-lanthanum aluminum alloy material, and the positive grid comprises the following components in percentage by weight: 0.05% of calcium, 1.5% of tin, 0.001% of silver, 0.08% of selenium, 0.02% of lanthanum and 0.05% of aluminum.
The positive active material comprises the following components in percentage by mass: 0.07 percent of acrylic staple fiber, 0.6 percent of active carbon, 1 percent of tetrabasic lead sulfate, 15 percent of red lead, 0.2 percent of antimony trioxide, 0.08 percent of titanium dioxide, 0.08 percent of stannous sulfate, 1 percent of porous glass micro-bead, 15 percent of distilled water, 10 percent of 1.450g/ml dilute sulfuric acid and the balance of lead powder with the oxidation degree of 72-85 percent.
The preparation process of the positive electrode active material and the positive grid and the structure of the positive grid are the same as those of example 1.
The finished battery product internalized by the positive plate of the embodiment has the highest three-time capacity of 228Ah, 3.6C3 discharge capacity of 195min and 100% DOD cycle life of 623 times through detection; the maximum three-time capacity of the conventional battery is 212 Ah, the 3.6C3 discharge capacity is 162 min, and the 100 percent DOD cycle life is 432 times. Dissecting the battery internalized by the positive plate of the embodiment after the service life is ended, wherein the positive plate grid is intact, and the positive active substance falls off normally; the positive grid of the conventional battery is seriously corroded, the ribs are brittle and broken, and the positive active substances are completely argillized after being blocked and falling off.
Example 3
The positive grid is made of a lead-calcium-tin-silver-selenium-lanthanum aluminum alloy material, and the positive grid comprises the following components in percentage by weight: 0.10% of calcium, 0.8% of tin, 0.004% of silver, 0.10% of selenium, 0.08% of lanthanum and 0.03% of aluminum.
The positive active material comprises the following components in percentage by mass: 0.15 percent of acrylic staple fiber, 0.3 percent of active carbon, 5 percent of tetrabasic lead sulfate, 5 percent of red lead, 0.2 percent of antimony trioxide, 0.1 percent of titanium dioxide, 0.10 percent of stannous sulfate, 0.3 percent of porous glass micro-bead, 12 percent of distilled water, 8 percent of dilute sulfuric acid with the concentration of 1.450g/ml and the balance of lead powder with the oxidation degree of 72-85 percent.
The preparation process of the positive electrode active material and the positive grid and the structure of the positive grid are the same as those of example 1.
In the finished battery product internalized by the positive plate, the detection shows that the maximum capacity of the battery product internalized by the positive plate is 227Ah, the 3.6C3 discharge capacity is 197min, and the 100% DOD cycle life is 715 times; the maximum three-time capacity of the conventional battery is 212 Ah, the 3.6C3 discharge capacity is 162 min, and the 100 percent DOD cycle life is 432 times. Dissecting the battery internalized by the positive plate of the embodiment after the service life is ended, wherein the positive plate grid is intact, and the positive active substance falls off normally; the positive grid of the conventional battery is seriously corroded, the ribs are brittle and broken, and the positive active substances are completely argillized after being blocked and falling off.
Claims (2)
1. The deep-cycle power battery positive plate comprises a positive plate grid and a positive active substance, and is characterized in that the structure of the positive plate grid adopts a radiation type structural design, the specific structure of the positive plate grid comprises a frame (4), a lug (1) arranged on the frame (4), a main diagonal rib (2) arranged in the frame (4), a sub diagonal rib (3) and a transverse rib (5), and the main diagonal ribs (2) which are separated in pairs are radiated to form the sub diagonal ribs (3) in a mode of dividing one into two within the interval range of the two transverse ribs (5) on the middle position of the frame (4).
2. The deep cycle power battery positive plate according to claim 1, wherein the upper and lower surfaces of the frame (4), the main tilted rib (2), the sub tilted rib (3) and the transverse rib (5) are provided with knurls (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020188091.7U CN211980767U (en) | 2020-02-20 | 2020-02-20 | Deep circulation power battery positive plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020188091.7U CN211980767U (en) | 2020-02-20 | 2020-02-20 | Deep circulation power battery positive plate |
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| Publication Number | Publication Date |
|---|---|
| CN211980767U true CN211980767U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020188091.7U Active CN211980767U (en) | 2020-02-20 | 2020-02-20 | Deep circulation power battery positive plate |
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| Country | Link |
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| CN (1) | CN211980767U (en) |
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- 2020-02-20 CN CN202020188091.7U patent/CN211980767U/en active Active
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Address after: 226400 No. 118 Yalujiang Road, New Area of Rudong Economic Development Zone, Nantong City, Jiangsu Province Patentee after: Jiangsu Haibao New Energy Co.,Ltd. Address before: 226400 No. 118 Yalujiang Road, New Area of Rudong Economic Development Zone, Nantong City, Jiangsu Province Patentee before: Jiangsu Hairui Power Supply Co.,Ltd. |