CN118198378B - Lead carbon battery negative electrode plate and lead carbon battery - Google Patents

Lead carbon battery negative electrode plate and lead carbon battery Download PDF

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Publication number
CN118198378B
CN118198378B CN202410317953.4A CN202410317953A CN118198378B CN 118198378 B CN118198378 B CN 118198378B CN 202410317953 A CN202410317953 A CN 202410317953A CN 118198378 B CN118198378 B CN 118198378B
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Prior art keywords
lead
fixedly arranged
negative electrode
battery
groups
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CN118198378A (en
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曹阳
袁朝勇
袁朝明
严学庆
钱军
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JIANGSU OLITER ENERGY TECHNOLOGY CO LTD
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JIANGSU OLITER 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H01M4/73—Grids for lead-acid accumulators, e.g. frame plates
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/665—Composites
    • H01M4/667—Composites in the form of layers, e.g. coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/68—Selection of materials for use in lead-acid accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Primary Cells (AREA)

Abstract

The invention discloses a lead-carbon battery negative electrode plate and a lead-carbon battery, which belong to the technical field of lead-carbon batteries, and comprise grids; the grid comprises an outer frame, a plurality of groups of metal supporting rods are fixedly arranged on the outer frame, and the interiors of the plurality of groups of metal supporting rods are hollow structures; the surface of a plurality of groups of metal supporting rods is provided with a plurality of through holes, palladium membranes are arranged in hollow structures in the metal supporting rods, and the palladium membranes can absorb hydrogen through the through holes. Compared with the prior art, the invention fully utilizes the hydrogen absorption characteristic of the metal palladium to enable the hydrogen separated out from the negative electrode plate to be absorbed inwards, effectively avoids the active substances in the lead plaster from being washed outwards, and prevents the negative electrode plate from serious powder removal; through desorption to hydrogen, make hydrogen can retrieve the conversion and become water and flow back to electrolyte, ensure that electrolyte can not reduce because of hydrogen evolution, ensure lead carbon battery's performance, extension lead carbon battery's life.

Description

Lead carbon battery negative electrode plate and lead carbon battery
Technical Field
The invention belongs to the technical field of lead-carbon batteries, and particularly relates to a lead-carbon battery negative electrode plate and a lead-carbon battery.
Background
Lead-carbon batteries have been improved over conventional lead-acid batteries. According to the method, active carbon (such as graphene) is added into the negative electrode of the lead-acid battery, so that the service life of the lead-acid battery is remarkably prolonged. The carbon material (C) in the lead-carbon battery is combined with the spongy lead (Pb) cathode to form the lead-carbon dual-function composite electrode (lead-carbon electrode for short) with both capacitance and battery characteristics. The composite electrode is matched and assembled with a PbO2 positive electrode, and the lead-carbon battery is formed.
The lead-carbon battery consists of a positive electrode, a negative electrode, electrolyte and a shell, wherein the negative electrode adopts a carbon material as an electrode material, and is an important component in the lead-carbon battery. The current lead-carbon battery cathode plate is generally of a structure that lead plaster is coated on a grid, and due to the large difference of density of carbon and lead, carbon materials are directly mixed into the cathode lead plaster, so that the problems that the carbon materials are difficult to uniformly disperse and the binding force of the lead plaster and the grid is poor exist, the strength of the plate is reduced, the lead plaster is easy to pulverize and fall off in the cyclic charge and discharge process of the battery, and the service life of the battery is reduced.
Particularly, in the process of rapid charge and discharge of high current of the battery, the negative electrode plate can release hydrogen outwards to wash active substances in the lead plaster, so that serious powder removal is caused, meanwhile, the water in the electrolyte of the battery can be reduced due to the fact that the hydrogen outwards is released, the concentration of the electrolyte is increased, and the performance of the battery is influenced.
Therefore, in order to solve the above-mentioned problems, it is necessary to provide a lead-carbon battery negative electrode plate and a lead-carbon battery.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a lead-carbon battery negative electrode plate and a lead-carbon battery, which can solve the problems that the negative electrode plate is subjected to hydrogen evolution outwards to wash active substances in lead plaster, so that serious powder removal is caused, water in battery electrolyte is reduced, the concentration of the electrolyte is increased, and the battery performance is influenced.
In order to achieve the above object, a specific embodiment of the present invention provides a lead-carbon battery anode plate, including: a grid;
The grid comprises an outer frame, a plurality of groups of metal supporting rods are fixedly arranged on the outer frame, and the interiors of the plurality of groups of metal supporting rods are hollow structures;
The surfaces of the metal supporting rods are provided with a plurality of through holes, palladium membranes are arranged in hollow structures in the metal supporting rods, and the palladium membranes can absorb hydrogen through the through holes;
The palladium membrane is cylindrical, an inner framework is arranged in the cylindrical palladium membrane, and an electric heating wire is embedded in the inner framework and is used for heating and desorbing the palladium membrane;
The outer frame is fixedly provided with a confluence box, the interiors of a plurality of groups of metal struts are communicated with the interiors of the confluence boxes, and a conduit is fixedly arranged on the confluence box, and hydrogen generated by desorption of the palladium membrane can enter the confluence box and be led out outwards through the conduit.
In one or more embodiments of the present invention, a binding post is fixedly installed on the outer frame, a plurality of groups of heating wires are all connected in series on the binding post, and a wire is fixedly connected to the binding post and is used for externally connecting a power supply to realize the energizing heating of the plurality of groups of heating wires.
In one or more embodiments of the present invention, the inner frame is made of a heat conductive metal material, the heating wire is completely wrapped inside the inner frame, and the heating wire conducts heat through the inner frame to indirectly heat the palladium membrane.
In order to achieve the above object, a specific embodiment of the present invention further provides a lead-carbon battery, including: the battery comprises a battery shell, an inner layer packaging plate, a reaction box, a buffer cooling box and a packaging cover plate;
A plurality of groups of negative electrode plates and a plurality of groups of positive electrode plates are arranged in the battery shell, a collecting pipe is fixedly arranged above the plurality of groups of negative electrode plates, and the interior of the collecting pipe is communicated with the interior of the guide pipe on the plurality of groups of negative electrode plates;
The inner packaging plate is fixedly arranged in the battery shell and is used for primarily packaging the battery shell;
The reaction box is fixedly arranged on the inner-layer packaging plate, a connecting pipe is fixedly arranged on the reaction box, one end of the connecting pipe is communicated with the collecting pipe, and hydrogen desorbed from the palladium film can be led into the reaction box through the connecting pipe;
An igniter is fixedly arranged on the reaction box, and the igniter can provide a fire source to enable hydrogen entering the reaction box to react with oxygen in air under the combustion condition to generate water vapor;
The buffer cooling box is fixedly arranged on the inner packaging plate, an intermediate pipe is fixedly arranged between the reaction box and the buffer cooling box, water vapor generated by the reaction in the reaction box can enter the buffer cooling box through the intermediate pipe, a heat exchange cooling assembly is arranged in the buffer cooling box, and the water vapor can be buffered and cooled into liquid drops in the buffer cooling box through the heat exchange cooling assembly;
a second return pipe is fixedly arranged on the buffer cooling box, a second electromagnetic valve is fixedly arranged on the second return pipe, and the second electromagnetic valve is used for controlling the on-off of the second return pipe;
One end of the second return pipe penetrates through the lower part of the inner packaging plate, and liquid drops in the buffer cooling box can flow back to the inside of the battery shell through the second return pipe;
the packaging cover plate is fixedly arranged at the top end of the battery shell through bolts and used for final packaging of the battery shell.
In one or more embodiments of the present invention, an inner peripheral edge is fixedly mounted on an inner wall of the battery case, a plurality of sets of screw holes are formed on the inner peripheral edge, the inner packaging plate is fixed on the inner peripheral edge through bolts, and an edge of the inner packaging plate is tightly attached to the inner peripheral edge.
In one or more embodiments of the present invention, the heat exchange cooling assembly includes a thermoelectric power generation module fixedly installed at a top end of the buffer cooling box, a heat release end is fixedly installed at the top end of the thermoelectric power generation module, a heat absorption end is fixedly installed at a bottom end of the thermoelectric power generation module, the heat absorption end is located inside the buffer cooling box, and the thermoelectric power generation module is capable of generating power by using a temperature difference between the heat absorption end and the heat release end.
In one or more embodiments of the present invention, an energy storage battery is fixedly installed at one side of the thermoelectric generation module, and the energy storage battery is used for storing the electric energy generated by the thermoelectric generation module.
In one or more embodiments of the present invention, a first conductive wire and a second conductive wire are fixedly installed on the energy storage battery, a main wire is fixedly installed above the negative electrode plate, a plurality of groups of conductive wires on the negative electrode plate are all connected in series on the main wire, one end of the first conductive wire is electrically connected with the main wire, and one end of the second conductive wire is electrically connected with the igniter.
In one or more embodiments of the present invention, a fireproof lining is fixedly installed on the inner wall of the reaction box, and a temperature monitoring probe is fixedly installed on the inner wall of the fireproof lining.
In one or more embodiments of the present invention, a first return pipe is fixedly installed on the reaction box, a first electromagnetic valve is fixedly installed on the first return pipe, and one end of the first return pipe penetrates below the inner layer packaging plate.
Compared with the prior art, the invention fully utilizes the hydrogen absorption characteristic of the metal palladium to enable the hydrogen separated out from the negative electrode plate to be absorbed inwards, effectively avoids the active substances in the lead plaster from being washed outwards, and prevents the negative electrode plate from serious powder removal;
Through desorption to hydrogen, make hydrogen can retrieve the conversion and become water and flow back to electrolyte, ensure that electrolyte can not reduce because of hydrogen evolution, ensure lead carbon battery's performance, extension lead carbon battery's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a grid structure diagram of a lead-carbon battery negative plate in accordance with one embodiment of the present invention;
FIG. 2 is a diagram showing a metal strut structure of a negative electrode plate of a lead-carbon battery according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a metal strut of a negative plate of a lead-carbon battery in accordance with one embodiment of the present invention;
FIG. 4 is a block diagram of a lead-carbon battery according to an embodiment of the present invention;
FIG. 5 is an exploded view of a lead-carbon battery according to an embodiment of the present invention;
FIG. 6 is a top view of a battery housing of a lead-carbon battery according to an embodiment of the invention;
FIG. 7 is a top view of an inner package plate of a lead-carbon battery according to an embodiment of the invention;
FIG. 8 is a front cross-sectional view of a buffer cooling box of a lead-carbon battery according to an embodiment of the invention;
Fig. 9 is a top cross-sectional view of a lead-carbon battery reaction cassette according to an embodiment of the invention.
The main reference numerals illustrate:
1. A grid; 101. an outer frame; 1011. a tab; 102. a metal strut; 1021. a through hole; 1022. a palladium membrane; 10221. an inner skeleton; 10222. heating wires; 103. a junction box; 1031. a conduit; 1032. a manifold; 104. a wiring strip; 1041. a wire; 1042. a main line; 2. a battery case; 201. an inner peripheral edge; 3. packaging the cover plate; 301. a heat radiation port; 302. perforating; 303. a wiring sheath; 4. a positive electrode plate body; 5. a positive terminal; 6. a negative electrode binding post; 7. an inner package plate; 8. a reaction cassette; 801. a connecting pipe; 8011. a first one-way valve; 802. an air inlet pipe; 8021. a second one-way valve; 803. a first return pipe; 8031. a first electromagnetic valve; 804. a middle tube; 805. an igniter; 806. a fire-resistant liner; 807. a temperature monitoring probe; 9. a buffer cooling box; 901. a second return pipe; 9011. a second electromagnetic valve; 902. a pressure release valve; 10. a thermoelectric generation module; 1001. a heat release end; 1002. a heat absorbing end; 11. an energy storage battery; 1101. a first conductive line; 1102. a second conductive line; 12. a negative electrode plate body.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
As shown in fig. 1 to 3, a negative electrode plate of a lead-carbon battery in an embodiment of the invention comprises a grid 1 and lead plaster coated on the surface of the grid 1.
The grid 1 comprises an outer frame 101, and a tab 1011 is welded and fixed on the outer frame 101, and the tab 1011 facilitates the series connection between the negative electrode plates.
A plurality of groups of metal struts 102 are welded and fixed on the outer frame 101, and the outer frame 101 and the metal struts 102 are assembled together to form the grid 1. The lead carbon battery negative electrode plate is prepared by filling the surface of the grid 1 with lead paste with capacitive carbon materials such as carbon nano tubes and graphene oxide materials.
The inside of the plurality of groups of metal supporting rods 102 is of a hollow structure, so that the weight of the grid can be effectively reduced, and the weight of the negative electrode plate is reduced.
The surfaces of the plurality of groups of metal supporting rods 102 are provided with a plurality of through holes 1021, and the contact area between the lead plaster and the metal supporting rods 102 can be effectively increased through the plurality of through holes 1021, so that the lead plaster is combined with the grid 1 more firmly, and the structural strength of the negative electrode plate is enhanced.
As shown in fig. 2 and 3, the hollow structures inside the groups of metal struts 102 are each internally provided with a cylindrical palladium membrane 1022, and the palladium membrane 1022 can absorb hydrogen through the through holes 1021. Among them, spongy palladium and gelatinous palladium differ in the ability to absorb hydrogen. 1 volume of palladium sponge can absorb 850 volumes of hydrogen; 1 volume of colloidal palladium, 1200 volumes of hydrogen can be absorbed. Therefore, in this embodiment, the palladium film 1022 is preferably made of colloidal palladium.
Specifically, when the lead-carbon battery is charged and discharged with a large current, the palladium membrane 1022 can absorb the hydrogen gas separated out from the inside of the negative electrode plate to the inside of the metal support rod 102 through the through holes 1021, so that the hydrogen gas can not be separated out to wash out the lead plaster, the pulverization of the negative electrode plate in the use process is avoided, and the service life of the negative electrode plate is effectively prolonged.
It is noted that the process of absorbing hydrogen by the palladium membrane 1022 is an endothermic process, i.e., absorbs heat during the reaction. In the process of rapid charging and discharging of the lead-carbon battery with large current, heat is inevitably generated, and the battery heats. At this time, the palladium film 1022 absorbs hydrogen and can absorb part of the inside of the battery, so that the cooling effect on the battery is realized due to the heat generated by rapid charge and discharge, and the safe and efficient use of the lead-carbon battery is facilitated.
The inside of the cylindrical palladium membrane 1022 is supported by the inner frame 10221, so that the palladium membrane 1022 can be inserted into the metal strut 102, and the assembly is convenient.
The inside of the inner frame 10221 is embedded with the heating wire 10222, and the heating wire 10222 is completely wrapped inside the inner frame 10221. Wherein, the inner skeleton 10221 is made of heat-conducting metal, and the heat generated by the electric heating wire 10222 after being electrified can be conducted into the hollow structure inside the metal supporting rod 102 through the inner skeleton 10221, so as to indirectly heat the palladium membrane 1022.
Specifically, when the palladium membrane 1022 is heated to 40 to 50 ℃, the absorbed gas can be discharged. After the palladium membrane 1022 absorbs a certain amount of hydrogen, the inner skeleton 10221 is heated by the electric heating wire 10222, so that the inner skeleton 10221 heats the palladium membrane 1022 to 40-50 ℃, at this time, the hydrogen absorbed inside the palladium membrane 1022 can be released into the hollow structure inside the metal support rod 102, desorption of the palladium membrane 1022 is realized, and the palladium membrane 1022 is recovered to a normal state.
As shown in fig. 1, the outer frame 101 is fixedly provided with a confluence box 103, the interiors of a plurality of groups of metal struts 102 are communicated with the interior of the confluence box 103, and hydrogen generated by desorption of palladium membranes 1022 in the interiors of a plurality of groups of metal struts 102 can enter the interior of the confluence box 103. The conduit 1031 is fixedly arranged on the confluence box 103, and hydrogen entering the confluence box 103 can be led out outwards through the conduit 1031, so that the hydrogen can be conveniently recycled.
The outer frame 101 is also fixedly provided with a wiring strip 104, a plurality of groups of heating wires 10222 are connected in series on the wiring strip 104, and the electric heating of the plurality of groups of heating wires 10222 can be realized simultaneously through the wiring strip 104. The wire connecting strip 104 is fixedly connected with a wire 1041, and the wire 1041 is used for externally connecting a power supply to the wire connecting strip 104.
As shown in fig. 4 to 9, the embodiment of the invention further discloses a lead-carbon battery, which comprises: the battery case 2, the inner packaging plate 7, the reaction box 8, the buffer cooling box 9 and the packaging cover plate 3.
Wherein, battery case 2 inside fixed mounting has multiunit negative pole polar plate body 12 and multiunit positive pole polar plate body 4, fixedly connected with negative pole terminal 6 between the multiunit negative pole polar plate body 12, fixedly connected with positive pole terminal 5 between the multiunit positive pole polar plate body 4. The wiring of the lead carbon battery is facilitated through the positive electrode wiring terminal 5 and the negative electrode wiring terminal 6.
As shown in fig. 6, a collecting pipe 1032 is fixedly installed above the plurality of sets of negative electrode plate bodies 12, and the inside of the collecting pipe 1032 is communicated with the inside of a conduit 1031 on the plurality of sets of negative electrode plate bodies 12. The hydrogen gas discharged through the conduit 1031 can be collected inside the collecting pipe 1032, and concentrated discharge can be achieved.
As shown in fig. 5, an inner peripheral edge 201 is fixedly mounted on the inner wall of the battery case 2, the inner peripheral edge 201 is a four-side frame, screw holes are formed in four corners of the inner peripheral edge 201, insertion holes corresponding to the screw holes are formed in four corners of the inner packaging plate 7, bolts penetrate through the insertion holes and are screwed into the screw holes, and the inner packaging plate 7 can be locked and fixed at the top end of the inner peripheral edge 201.
At this time, the edge of the inner packaging plate 7 is tightly attached to the inner peripheral edge 201, so that good sealing performance is achieved between the inner packaging plate 7 and the inner peripheral edge 201, and therefore the inner packaging plate 7 is utilized to realize primary sealing and packaging of the battery shell 2, the sealing effect of the lead-carbon battery is improved, and the situation of battery leakage is not easy to occur.
As shown in fig. 5 and 7, the reaction cassette 8 is fixedly mounted on the inner packaging plate 7, a connection pipe 801 is fixedly mounted on the reaction cassette 8, and one end of the connection pipe 801 is communicated with the manifold 1032, so that the hydrogen gas collected inside the manifold 1032 can be introduced into the reaction cassette 8 through the connection pipe 801.
Wherein, the first check valve 8011 is fixedly installed on the connection pipe 801 to ensure that the hydrogen gas entering the reaction box 8 does not flow back.
An igniter 805 is fixedly installed on the reaction cassette 8, and one end of the igniter 805 penetrates into the reaction cassette 8. After the hydrogen gas enters the reaction cassette 8 through the connection pipe 801, the hydrogen gas can react with oxygen in the air to generate steam under the condition of ignition by the igniter 805.
The chemical equation of the reaction is 2h2+ o2=2h2o, provided that ignition occurs.
That is, the hydrogen desorbed from the palladium membrane 1022 passes through the junction box 103, the conduit 1031, the junction tube 1032 and the connection tube 801 in order, finally enters the reaction box 8, and reacts with the oxygen in the air inside the reaction box 8 under the ignition condition to generate water vapor, so as to realize the conversion of hydrogen.
The top of the reaction box 8 is fixedly provided with an air inlet pipe 802, the inside of the reaction box 8 is communicated with the outside air through the air inlet pipe 802, and the air required by the reaction can be provided for the inside of the reaction box 8 through the air inlet pipe 802. The air inlet pipe 802 is fixedly provided with a second one-way valve 8021, and water vapor can be prevented from being lost outwards through the air inlet pipe 802 in the reaction process through the second one-way valve 8021.
As shown in fig. 9, a fireproof lining 806 is fixedly installed on the inner wall of the reaction box 8, the fireproof lining 806 adopts a double-layer structure of fireproof gypsum board and flame delay type glass, the reaction box 8 can have excellent fireproof and heat-insulating properties through the fireproof lining 806, and the hydrogen conversion reaction inside the reaction box 8 is ensured not to affect the lead-carbon battery.
The inner wall of the fireproof lining 806 is fixedly provided with a temperature monitoring probe 807, and the temperature inside the reaction box 8 can be monitored in real time through the temperature monitoring probe 807, so that the safe operation of the hydrogen conversion reaction can be conveniently controlled.
As shown in fig. 5 and 7, a first return pipe 803 is fixedly installed on the reaction box 8, and one end of the first return pipe 803 penetrates below the inner packaging plate 7, that is, the inside of the reaction box 8 is communicated with the inside of the lead-carbon battery through the first return pipe 803. The first electromagnetic valve 8031 is fixedly arranged on the first return pipe 803, and the on-off of the first return pipe 803 can be intelligently controlled through the first electromagnetic valve 8031.
Specifically, during the hydrogen conversion reaction in the reaction box 8, the first electromagnetic valve 8031 is always in a closed state, so that high-temperature steam is prevented from entering the battery through the first return pipe 803. After the reaction is finished, by monitoring the internal temperature of the reaction box 8, whether the water vapor is completely condensed into liquid drops can be judged, and the first electromagnetic valve 8031 is opened only when the temperature is lower than 40 ℃, and the liquid drops in the reaction box 8 can flow back to the electrolyte in the battery shell 2 through the first return pipe 803 after being collected at the moment, so that the electrolyte loss caused by partial hydrogen evolution can be supplemented.
As shown in fig. 5 and 7, the top end of the inner packaging plate 7 is also fixedly provided with a buffer cooling box 9, and an intermediate pipe 804 is fixedly arranged between the reaction box 8 and the buffer cooling box 9. The reaction inside the reaction box 8 is increased due to the temperature rise, and the internal pressure of the reaction box 8 is also increased, at this time, the water vapor generated by the reaction inside the reaction box 8 can enter the buffer cooling box 9 through the intermediate pipe 804, and buffer pressure relief can be performed inside the reaction box 8 by using the buffer cooling box 9, so that the danger of explosion of the reaction box 8 due to the continuous increase of the internal temperature and pressure is avoided.
The buffer cooling box 9 is also fixedly provided with a pressure relief valve 902, and the pressure relief valve 902 can automatically relieve pressure when the inside of the buffer cooling box 9 is over-pressurized, so that the explosion-proof protection function is further realized.
A second return pipe 901 is fixedly arranged on the buffer cooling box 9, and one end of the second return pipe 901 penetrates through the lower part of the inner layer packaging plate 7. The inside of the buffer cooling box 9 is also communicated with the inside of the lead-carbon battery through a second return pipe 901. The water vapor entering the buffer cooling box 9 is condensed into droplets, and then can be returned to the inside of the battery case 2 through the second return pipe 901.
A second electromagnetic valve 9011 is fixedly arranged on the second return pipe 901, and the second electromagnetic valve 9011 is used for controlling the on-off of the second return pipe 901.
Specifically, the temperature inside the buffer cooling cassette 9 can be determined by monitoring the temperature inside the reaction cassette 8 with the temperature monitoring probe 807, because the reaction cassette 8 serves as a reaction chamber, the temperature is always higher than the temperature inside the buffer cooling cassette 9. When the first solenoid valve 8031 is opened to return the droplets collected in the reaction cassette 8 to the inside of the electrolyte, the second solenoid valve 9011 is opened accordingly to return the droplets collected in the buffer cooling cassette 9 to the inside of the electrolyte in the battery case 2 through the second return pipe 901.
Thus, the hydrogen precipitated from the negative electrode plate can be returned to the electrolyte again after a series of recovery conversion treatment, so that the defect of water reduction and concentration increase of the electrolyte caused by hydrogen evolution is overcome, and the service performance of the battery is effectively ensured.
As shown in fig. 5 and 8, the buffer cooling box 9 is internally provided with a heat exchange cooling assembly, the heat exchange cooling assembly comprises a thermoelectric power generation module 10, the thermoelectric power generation module 10 is fixedly arranged at the top end of the buffer cooling box 9, the top end of the thermoelectric power generation module 10 is fixedly provided with a heat release end 1001, and the heat release end 1001 is used for outward heat dissipation and serves as a low-temperature end.
The bottom fixed mounting of thermoelectric generation module 10 has the heat absorption end 1002, and the heat absorption end 1002 is located the inside of buffer cooling box 9, and the heat absorption end 1002 can absorb the heat that gets into in the inside vapor of buffer cooling box 9 to realize the heat transfer cooling to vapor, make the inside vapor of buffer cooling box 9 can the rapid condensation.
Meanwhile, the heat absorbing end 1002 can be a high temperature end, so that power generation can be performed between the heat absorbing end 1002 and the heat releasing end 1001 based on the seebeck effect by using the temperature difference therebetween.
It is noted that the hydrogen conversion reaction is carried out periodically, and the temperature inside the lead-carbon battery is also relatively high when the reaction is not carried out and the battery is operating normally. At this time, the second electromagnetic valve 9011 may be kept in a normally open state, so that hot air in the battery may enter the buffer cooling box 9, and the temperature in the buffer cooling box 9 may be increased, and at this time, the temperature of the heat absorbing end 1002 may also be increased, so that a temperature difference may occur between the heat absorbing end 1002 and the heat releasing end 1001. Thus, as long as the lead-carbon battery is normally used, the thermoelectric generation module 10 can be used for generating electricity, so that the heat dissipation of the lead-carbon battery is facilitated, the energy source can be reused, the energy loss is reduced, and the energy source is saved.
As shown in fig. 5 and 7, an energy storage battery 11 is fixedly installed at one side of the thermoelectric generation module 10, and the energy storage battery 11 is used for storing electric energy generated by the thermoelectric generation module 10. The first and second conductive wires 1101 and 1102 are fixedly mounted on the energy storage battery 11. A main line 1042 is fixedly arranged above the negative electrode plates, the leads 1041 on the plurality of groups of negative electrode plates are all connected in series on the main line 1042, one end of the first conductive line 1101 is electrically connected with the main line 1042, so that the energy storage battery 11 can supply power for the electric heating wire 10222 through the first conductive line 1101.
One end of the second conductive wire 1102 is electrically connected to the igniter 805, so that the energy storage battery 11 can supply power to the igniter 805 through the second conductive wire 1102.
In this way, the electric energy generated by the thermoelectric generation module 10 can be fully utilized for the heating desorption of the palladium membrane 1022 and the conversion reaction of hydrogen, and no external energy source is needed, so that energy is saved.
As shown in fig. 4 and 5, the package cover 3 is fixedly mounted on the top end of the battery case 2 by bolts for final packaging of the battery case 2. The double packaging of the battery can be realized through the inner packaging plate 7 and the packaging cover plate 3, so that the battery is safer and more reliable to use, and the condition of liquid leakage is not easy to occur.
Wherein, two sets of wiring sheath 303 of fixed mounting have on the encapsulation apron 3, and the top of anodal terminal 5 and negative pole terminal 6 all passes inlayer packing plate 7 and encapsulation apron 3 in proper order to insert respectively to two sets of inside wiring sheath 303, make things convenient for lead carbon battery's wiring, and can protect junction through wiring sheath 303.
The packaging cover plate 3 is also provided with a heat dissipation opening 301 and two groups of perforations 302, the heat dissipation opening 301 is matched with a heat dissipation end 1001, and the heat dissipation end 1001 penetrates through the heat dissipation opening 301 and is exposed to the outside air, so that efficient heat dissipation is facilitated.
The top ends of the air inlet pipe 802 and the pressure relief valve 902 respectively penetrate through the two groups of perforations 302 and extend to the outside, so that the air inlet pipe 802 can normally inlet air, and the pressure relief valve 902 can normally exhaust and relieve pressure.
When the lead-carbon battery is used, hydrogen gas separated out from a negative electrode plate in the high-current rapid charge and discharge process can be absorbed by the palladium film 1022 through the plurality of through holes 1021, after the palladium film 1022 absorbs a certain amount of hydrogen gas, the palladium film 1022 is heated by the electric heating wire 10222 to desorb the hydrogen gas, the desorbed hydrogen gas sequentially enters the reaction box 8 through the confluence box 103, the guide pipe 1031, the confluence pipe 1032 and the connecting pipe 801, and the igniter 805 is responsible for ignition at the moment, so that the hydrogen gas reacts with oxygen in the air to generate water vapor; at this time, part of the water vapor enters the buffer cooling box 9, and part of the water vapor remains in the reaction box 8, and after the water vapor in the reaction box 8 and the buffer cooling box 9 is completely condensed into droplets, the droplets flow back to the electrolyte respectively to compensate for the loss of the electrolyte.
The water vapor in the buffer cooling box 9 can also drive the thermoelectric generation module 10 to perform efficient thermoelectric generation, the generated electric energy is stored in the energy storage battery 11, and the electric energy stored in the energy storage battery 11 can be utilized for heating and desorbing the palladium membrane 1022 and igniting and supplying energy to the igniter 805, so that the full and reasonable utilization of energy is realized.
The invention fully utilizes the hydrogen absorption characteristic of the metallic palladium to enable the hydrogen separated out from the negative electrode plate to be absorbed inwards, thereby effectively avoiding the active substances in the lead plaster from being washed outwards and preventing the negative electrode plate from serious powder removal;
Through desorption to hydrogen, make hydrogen can retrieve the conversion and become water and flow back to electrolyte, ensure that electrolyte can not reduce because of hydrogen evolution, ensure lead carbon battery's performance, extension lead carbon battery's life.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. A lead carbon battery negative electrode plate, comprising:
The grid comprises an outer frame, a plurality of groups of metal supporting rods are fixedly arranged on the outer frame, and the interiors of the plurality of groups of metal supporting rods are hollow structures;
The surfaces of the metal supporting rods are provided with a plurality of through holes, palladium membranes are arranged in hollow structures in the metal supporting rods, and the palladium membranes can absorb hydrogen through the through holes;
The palladium membrane is cylindrical, an inner framework is arranged in the cylindrical palladium membrane, and an electric heating wire is embedded in the inner framework and is used for heating and desorbing the palladium membrane;
The outer frame is fixedly provided with a confluence box, the interiors of a plurality of groups of metal struts are communicated with the interiors of the confluence boxes, and a conduit is fixedly arranged on the confluence box, and hydrogen generated by desorption of the palladium membrane can enter the confluence box and be led out outwards through the conduit.
2. The lead-carbon battery negative electrode plate according to claim 1, wherein the outer frame is fixedly provided with a binding post, a plurality of groups of heating wires are connected in series with the binding post, the binding post is fixedly connected with a wire, and the wire is used for externally connecting a power supply to realize the electrified heating of the plurality of groups of heating wires.
3. The negative electrode plate of the lead-carbon battery according to claim 1, wherein the inner framework is made of heat-conducting metal, the electric heating wire is completely wrapped inside the inner framework, and the electric heating wire conducts heat through the inner framework to indirectly heat the palladium membrane.
4. A lead-carbon battery employing the lead-carbon battery negative electrode plate according to any one of claims 1 to 3, comprising:
The battery shell is internally provided with a plurality of groups of negative electrode plates and a plurality of groups of positive electrode plates, a collecting pipe is fixedly arranged above the plurality of groups of negative electrode plates, and the interior of the collecting pipe is communicated with the interior of the guide pipe on the plurality of groups of negative electrode plates;
The inner layer packaging plate is fixedly arranged in the battery shell and used for primarily packaging the battery shell;
The reaction box is fixedly arranged on the inner-layer packaging plate, a connecting pipe is fixedly arranged on the reaction box, one end of the connecting pipe is communicated with the collecting pipe, and hydrogen desorbed from the palladium film can be led into the reaction box through the connecting pipe;
An igniter is fixedly arranged on the reaction box, and the igniter can provide a fire source to enable hydrogen entering the reaction box to react with oxygen in air under the combustion condition to generate water vapor;
The buffer cooling box is fixedly arranged on the inner packaging plate, an intermediate pipe is fixedly arranged between the reaction box and the buffer cooling box, water vapor generated by the reaction in the reaction box can enter the buffer cooling box through the intermediate pipe, a heat exchange cooling assembly is arranged in the buffer cooling box, and the water vapor can be buffered and cooled into liquid drops in the buffer cooling box through the heat exchange cooling assembly;
a second return pipe is fixedly arranged on the buffer cooling box, a second electromagnetic valve is fixedly arranged on the second return pipe, and the second electromagnetic valve is used for controlling the on-off of the second return pipe;
One end of the second return pipe penetrates through the lower part of the inner packaging plate, and liquid drops in the buffer cooling box can flow back to the inside of the battery shell through the second return pipe;
And the packaging cover plate is fixedly arranged at the top end of the battery shell through bolts and is used for final packaging of the battery shell.
5. The lead-carbon battery according to claim 4, wherein an inner peripheral edge is fixedly arranged on the inner wall of the battery shell, a plurality of groups of screw holes are formed in the inner peripheral edge, the inner packaging plate is fixed on the inner peripheral edge through bolts, and the edge of the inner packaging plate is tightly attached to the inner peripheral edge.
6. The lead-carbon battery according to claim 4, wherein the heat exchange cooling assembly comprises a thermoelectric power generation module, the thermoelectric power generation module is fixedly arranged at the top end of the buffer cooling box, a heat release end is fixedly arranged at the top end of the thermoelectric power generation module, a heat absorption end is fixedly arranged at the bottom end of the thermoelectric power generation module, the heat absorption end is positioned in the buffer cooling box, and the thermoelectric power generation module can generate power by utilizing the temperature difference between the heat absorption end and the heat release end.
7. The lead-carbon battery according to claim 6, wherein an energy storage battery is fixedly arranged on one side of the thermoelectric generation module, and the energy storage battery is used for storing electric energy generated by the thermoelectric generation module.
8. The lead-carbon battery of claim 7, wherein the energy storage battery is fixedly provided with a first conductive wire and a second conductive wire, a main wire is fixedly arranged above the negative electrode plate, a plurality of groups of conductive wires on the negative electrode plate are all connected in series on the main wire, one end of the first conductive wire is electrically connected with the main wire, and one end of the second conductive wire is electrically connected with the igniter.
9. The lead-carbon battery of claim 4, wherein a fireproof lining is fixedly arranged on the inner wall of the reaction box, and a temperature monitoring probe is fixedly arranged on the inner wall of the fireproof lining.
10. The lead-carbon battery of claim 4, wherein the reaction box is fixedly provided with a first return pipe, the first return pipe is fixedly provided with a first electromagnetic valve, and one end of the first return pipe penetrates below the inner-layer packaging plate.
CN202410317953.4A 2024-03-20 2024-03-20 Lead carbon battery negative electrode plate and lead carbon battery Active CN118198378B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103618067A (en) * 2013-12-03 2014-03-05 国家电网公司 Tubular negative plate of lead-carbon battery
CN107029559A (en) * 2016-02-04 2017-08-11 中国科学院大连化学物理研究所 A kind of palladium membrane component for integrating electrical heating and Hydrogen Separation

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CN1132260C (en) * 1993-04-06 2003-12-24 C及D技术公司 Recombinant load-acid cell and long life battery
TWM367424U (en) * 2009-06-16 2009-10-21 Pilot Battery Co Ltd Slab lattice structure for lead-acid battery
CN213976971U (en) * 2020-11-16 2021-08-17 赣州联悦气体有限公司 Hydrogen adsorbs desorption apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103618067A (en) * 2013-12-03 2014-03-05 国家电网公司 Tubular negative plate of lead-carbon battery
CN107029559A (en) * 2016-02-04 2017-08-11 中国科学院大连化学物理研究所 A kind of palladium membrane component for integrating electrical heating and Hydrogen Separation

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