CN113506863A - Magnesium seawater dissolved oxygen battery - Google Patents
Magnesium seawater dissolved oxygen battery Download PDFInfo
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- CN113506863A CN113506863A CN202110788684.6A CN202110788684A CN113506863A CN 113506863 A CN113506863 A CN 113506863A CN 202110788684 A CN202110788684 A CN 202110788684A CN 113506863 A CN113506863 A CN 113506863A
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- carbon fiber
- piece
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- magnesium alloy
- magnesium
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- 239000013535 sea water Substances 0.000 title claims abstract description 78
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 41
- 239000001301 oxygen Substances 0.000 title claims abstract description 41
- 239000011777 magnesium Substances 0.000 title claims abstract description 30
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 28
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 106
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 91
- 239000004917 carbon fiber Substances 0.000 claims abstract description 91
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 89
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000001125 extrusion Methods 0.000 claims abstract description 47
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 31
- 239000010935 stainless steel Substances 0.000 claims abstract description 31
- 239000000565 sealant Substances 0.000 claims abstract description 14
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 35
- 239000000956 alloy Substances 0.000 claims description 22
- 238000005260 corrosion Methods 0.000 claims description 22
- 230000007797 corrosion Effects 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 6
- 229920002943 EPDM rubber Polymers 0.000 claims description 5
- 241001264766 Callistemon Species 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 230000005518 electrochemistry Effects 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 229910000619 316 stainless steel Inorganic materials 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000010070 extrusion (rubber) Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/30—Deferred-action cells
- H01M6/32—Deferred-action cells activated through external addition of electrolyte or of electrolyte components
- H01M6/34—Immersion cells, e.g. sea-water cells
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/46—Alloys based on magnesium or aluminium
- H01M4/466—Magnesium based
-
- 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
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
- H01M4/80—Porous plates, e.g. sintered carriers
- H01M4/806—Nonwoven fibrous fabric containing only fibres
-
- 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
Abstract
The invention discloses a magnesium seawater dissolved oxygen battery, which belongs to the technical field of electrochemistry and is characterized by comprising the following components: two circular frames; the central shaft of each circular frame is provided with a carbon fiber brush current collecting piece; a plurality of circles of carbon fiber brushes uniformly distributed around the carbon fiber brush current collector; the magnesium alloy anode is positioned between the two circular frames; the seal structure includes: an inverted funnel-shaped insulating water sealing piece positioned at the upper end of the magnesium alloy anode; water sealant is filled between the inverted funnel-shaped insulating water sealing piece and the magnesium alloy anode; a fixing member positioned on an upper surface of the inverted funnel-shaped insulating water seal member; a sealing shell located above the fixing piece; the sealing shell is provided with an extrusion sealing piece B and a current collection cable connecting piece; a squeeze seal A located above the seal housing; the fixing piece, the inverted funnel-shaped insulating water seal piece and the stainless steel collecting column of the magnesium alloy anode are sequentially inserted from top to bottom; the stainless steel column is provided with external threads for connecting with screws.
Description
Technical Field
The invention belongs to the technical field of electrochemistry, and particularly relates to a magnesium seawater dissolved oxygen battery.
Background
The deployment position of the far-sea deep-sea equipment is far away from the continent, and long-distance power transmission can not be carried out by laying submarine cables, so that a distributed independent power supply for long-term power generation must be equipped for the far-sea deep-sea equipment, continuous and stable power support is provided for underwater electronic equipment, and the survival time of the underwater power equipment is guaranteed. However, the deep sea environment is complex and limited by environments such as low temperature, high pressure, no light and corrosion, and the conventional electric energy source technology has the defects of short service life, incapability of maintenance, poor safety and reliability and the like.
The metal seawater battery is a kind of high specific energy primary chemical battery developed specially for marine environment application, and it adopts primary battery principle, and uses active metal material (Li, Mg, Al, Zn, etc.) as negative electrode and AgCl, CuCl, PbCl, etc. as negative electrode2、H2O2The electrodes or the water system metal-air battery directly taking the dissolved oxygen reduction electrode in the seawater as the anode.
The magnesium seawater dissolved oxygen battery technology can meet the power consumption requirements of low-power and long-life deep sea electronic equipment. The battery adopts high negative potential magnesium alloy as an anode, an inert carbon fiber brush electrode as a cathode (dissolved oxygen in electrocatalysis seawater), is designed to be an open structure, uses natural seawater as electrolyte, uses the dissolved oxygen in the seawater as a positive active substance, and realizes oxygen supply by using ocean current. The cell reaction principle is as follows:
and (3) anode reaction: mg → Mg2++2e-；
And (3) cathode reaction: o is2+2H2O+4e-→4OH-；
There is also a self-corrosion process at the anode metal Mg:
Mg+2H2O→Mg2++2OH-+H2↑
the electrolyte of the magnesium seawater battery is taken from natural seawater, so that the electrolyte does not need to be carried when in use, the battery quality is reduced, and the energy density of the battery is improved; the seawater battery has an open structure, and compared with a conventional power supply, the seawater battery does not need to be installed in a specific pressure-resistant container when being used in deep sea, so that the battery has a simpler structure and better safety performance; the metal seawater battery is stored in a dry state, the storage time can be infinite, the metal seawater battery can be activated after being immersed in seawater, the reaction product of the battery can be taken away from the surface of an electrode by the flowing seawater in work, the influence of the reaction byproduct on the performance of the battery is reduced, and the output voltage of the battery is more stable.
Patent 201110376269.6, china ocean university, applied for the positive electrode of seawater dissolved oxygen battery and the content of seawater dissolved oxygen battery using the positive electrode, invented the positive electrode material of carbon-based high-activity seawater battery, and proposed the principle structure of magnesium seawater dissolved oxygen battery with magnesium alloy material as the negative electrode material, but did not propose the specific design of the structure of the related battery.
Patent 202010199010.8, the seventh two fifth research institute of the company, ship re-engineering group, china, applied for the content of aluminum alloy-carbon fiber seawater dissolved oxygen cell, invented a seawater dissolved oxygen cell structure with metal-carbon fiber flexible composite material as the positive electrode and high-activation low-self-corrosion aluminum alloy as the negative electrode, and its structure cut and separated the reaction environment of the positive and negative electrodes, which is not good for the transmission of dissolved oxygen and reaction by-products in seawater.
Since the magnesium seawater dissolved oxygen battery needs to be arranged in seawater for a long time and continuously reacts, the requirement on the structure of the battery is high, such as corrosion resistance, water sealing and the like. The structure of the magnesium seawater battery has important influence on the performance and power characteristics of the battery.
In conclusion, the development of a basic structure of a seawater battery capable of assisting the stable performance exertion of a magnesium seawater dissolved oxygen battery is a problem to be solved in the field of magnesium seawater dissolved oxygen batteries.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a magnesium seawater dissolved oxygen battery which can assist the stable exertion of the positive and negative polarity performance of a seawater battery.
The invention aims to provide a magnesium seawater dissolved oxygen battery, which comprises:
two annular frames (201) coaxially arranged; a carbon fiber brush current collecting piece (203) is arranged at the central shaft of each circular frame (201);
a plurality of circles of carbon fiber brushes (202) uniformly distributed around the carbon fiber brush current collector (203);
a magnesium alloy anode (4) positioned between the two circular frames (201); the upper end of the magnesium alloy anode (4) is connected with the central shaft on the lower surface of the upper annular frame through a sealing structure (1); the length of the magnesium alloy anode (4) is less than the distance between the two circular frames (201); wherein:
the seal structure (1) includes:
an inverted funnel-shaped insulating water sealing member (110) positioned at the upper end of the magnesium alloy anode (4); a water sealant (111) is filled between the inverted funnel-shaped insulating water sealing piece (110) and the magnesium alloy anode (4);
a fixing member (108) provided on an upper surface of the inverted funnel-shaped insulating water seal member (110);
a sealed housing (102) positioned over the fixture (108); the sealing shell (102) is provided with an extrusion sealing piece B (103) and a current collection cable connecting piece (104);
a press seal A (101) located above the seal case (102);
a stainless steel collecting column (105) of a fixing piece (108), an inverted funnel-shaped insulating water sealing piece (110) and a magnesium alloy anode (4) are inserted from top to bottom in sequence; the stainless steel collecting column (105) is provided with an external thread for connecting with a screw (106).
Preferably, an insulating gasket (107) is arranged between the screw (106) and the fixing piece (108).
Preferably, an insulating press packing (109) is disposed between the fixing member (108) and the inverted funnel-shaped insulating water seal member (110).
Preferably, the press seal a (101) and the press seal B (103) are identical in structure.
Preferably, the compressive seal a (101) comprises an epdm compressive seal ring (1013), a compressive gasket (1012) above and below the epdm compressive seal ring (1013), a lower compressive seal (1014) below the lower compressive gasket, and upper compressive seals (1011) above the upper compressive gasket.
Preferably, the sealing shell (102) is a square titanium alloy piece, and the inside of the sealing shell is filled with water sealing insulating glue.
Preferably, the carbon fiber brush is connected with the annular frame (201) through a titanium alloy screw, and the cathode of the carbon fiber brush is bound into a bottle brush shape through a titanium wire.
Preferably, the inverted funnel-shaped insulating water sealing member (110) is made of hard insulating corrosion-resistant material.
Preferably, the annular frame (201) is made of a titanium alloy material.
The beneficial effect of this application is:
the battery can be distributed in seawater, seawater is used as electrolyte, the carbon fiber brush cathode catalyzes and reduces dissolved oxygen in seawater to obtain electrons, the magnesium alloy anode discharges to lose electrons, the sealing structure at the electrical connection part of the magnesium alloy anode and the carbon fiber brush cathode assists the seawater dissolved oxygen battery to discharge stably, and the multi-circle carbon fiber brush parallel-connection surrounding alternate arrangement structure effectively improves the current of the seawater dissolved oxygen battery and improves the power performance of the seawater battery.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a side view of a preferred embodiment of the present invention;
FIG. 2 is a top view of a preferred embodiment of the present invention;
FIG. 3 is a block diagram of part 1 in a preferred embodiment of the invention;
fig. 4 is a schematic view showing the structure of an inverted funnel-shaped insulating water seal in the preferred embodiment of the present invention.
FIG. 5 is a schematic diagram of the structure of the positive and negative cable extrusion seal in the preferred embodiment of the present invention;
FIG. 6 is a graph of constant current discharge voltage and time for 3000 hours in shallow sea 1A of a magnesium seawater dissolved oxygen battery.
Wherein: 1. a sealing structure; 2. the multi-circle carbon fiber brushes are connected in parallel and are arranged in a surrounding and alternating mode; 3. a carbon fiber brush cathode; 4. a magnesium alloy anode; 101. extruding the sealing element A; 102. sealing the shell; 103. pressing the sealing element B; 104. a current collecting cable connector; 105. stainless steel collecting columns; 106. a screw; 107. an insulating spacer; 108. a fixing member; 109. insulating the compression gasket; 110. inverting the funnel-shaped insulating water seal; 111. water sealing glue; 1011. extruding the sealing element; 1012. extruding the gasket; 1013. extruding the ethylene propylene diene monomer rubber to form a sealing ring; 1014. pressing under the seal.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 6, a magnesium seawater dissolved oxygen battery includes:
two annular frames 201 coaxially arranged; the central shaft of each circular frame 201 is provided with a carbon fiber brush collector 203;
a plurality of circles of carbon fiber brushes 202 uniformly distributed around the carbon fiber brush manifold 203;
a magnesium alloy anode 4 positioned between the two circular frames 201; the upper end of the magnesium alloy anode 4 is connected with the central shaft of the lower surface of the upper annular frame through a sealing structure 1; the length of the magnesium alloy anode 4 is less than the distance between the two circular frames (201); wherein:
the seal structure 1 includes:
an inverted funnel-shaped insulating water seal member 110 positioned at the upper end of the magnesium alloy anode 4; a water sealant 111 is filled between the inverted funnel-shaped insulating water sealing piece 110 and the magnesium alloy anode 4;
a fixing member 108 provided on an upper surface of the inverted funnel-shaped insulating water seal member 110;
a sealing shell 102 located above the fixture 108; the sealing shell 102 is provided with a compression sealing piece B103 and a current collection cable connecting piece 104;
a press seal a101 located above the seal housing 102;
the fixing piece 108, the inverted funnel-shaped insulating water seal piece 110 and the stainless steel cluster column 105 of the magnesium alloy anode 4 are inserted from top to bottom in sequence; the stainless steel stem 105 is provided with an external thread for connection with a screw 106.
The above preferred embodiment mainly comprises: the magnesium alloy brush comprises a magnesium alloy anode, a carbon fiber brush cathode, a sealing structure 1 at the connection part of the magnesium alloy anode and the carbon fiber brush cathode, a multi-circle carbon fiber brush parallel and surrounding alternate arrangement structure 2, a carbon fiber brush cathode 3, a magnesium alloy anode 4 and the like. Wherein:
and a sealing structure 1 is arranged at the electric connection position of the magnesium alloy anode 4 and the carbon fiber brush cathode 3.
The extrusion sealing piece A101 of the magnesium alloy anode connecting cable and the extrusion sealing piece B103 of the carbon fiber brush cathode connecting cable are made of titanium alloy materials. The two extrusion sealing elements are made of titanium alloy materials;
the compression seal a101 comprises an epdm compression seal 1013, compression spacers 1012 above and below the epdm compression seal 1013, a lower compression seal 1014 below the lower compression spacer, and upper compression seals 1011 above the upper compression spacer.
The number of the extrusion sealing rubber gaskets and the number of the titanium alloy extrusion gaskets are two.
The cubic sealing shell at the electrical connection part of the magnesium alloy anode and the carbon fiber brush cathode is a titanium alloy piece.
The carbon fiber brush parallel connection current collection cable connecting piece is made of a titanium alloy material and is provided with internal threads.
The magnesium alloy anode current-collecting cable is connected with a stainless steel collecting column, is made of stainless steel and is provided with internal threads and external threads.
The magnesium alloy anode current-collecting cable is connected with a stainless steel current-collecting column screw and is made of stainless steel.
The insulating gasket is made of insulating rubber and matched with the stainless steel column collecting screw.
The electric connector of the magnesium alloy anode and the carbon fiber brush cathode and the frame fixing part are titanium alloy plates, and the middle of each titanium alloy plate is provided with a hole.
The insulating extrusion sealing gasket is an insulating corrosion-resistant rubber wafer, and the middle of the insulating extrusion sealing gasket is provided with a hole.
The inverted funnel-shaped insulating water sealing piece is made of hard insulating corrosion-resistant materials.
The water sealant between the inverted funnel-shaped sealing element and the magnesium alloy anode is a seawater corrosion resistant water sealant.
The seawater dissolved oxygen battery magnesium alloy anode is made of corrosion-resistant magnesium alloy material.
The multi-circle carbon fiber brushes are connected in parallel and are arranged in an alternating surrounding mode.
The carbon fiber brush is surrounded and arranged round frame and is made of titanium alloy materials, is a fixing part of the overall structure of the seawater battery, is a fixing part of the cathode of the carbon fiber brush, and is a current transmission part of the cathode of the carbon fiber brush.
The carbon fiber brushes are connected in parallel and surround the alternate arrangement structure, are connected in parallel from inside to outside in multiple circles, and are fixed through titanium alloy screws. The carbon fiber brush cathode is bundled with the titanium wires and is in a bottle brush shape.
The multi-circle carbon fiber brush current collecting piece collects the cathode current of all the carbon fiber brushes.
The magnesium alloy anode connecting cable extrusion sealing element and the carbon fiber brush cathode connecting cable extrusion sealing element are made of titanium alloy materials, are fixed on the upper surface and the side surface of a cubic sealing shell (made of titanium alloy materials and filled with water sealing insulating glue inside) at the cathode connecting part of the magnesium alloy anode and the carbon fiber brush cathode, and are internally provided with an ethylene propylene diene monomer rubber extrusion sealing glue cushion and two extrusion gaskets made of titanium alloy to realize the water sealing of the cable through the joint extrusion on the extrusion sealing element and under the extrusion sealing element.
The insulating extrusion sealing gasket is an insulating corrosion-resistant rubber wafer, the middle of the insulating extrusion sealing gasket is provided with a hole, and the frame fixing piece and the inverted funnel-shaped insulating water sealing piece are used for clamping and extruding water seal to prevent seawater from entering the joint of the magnesium alloy anode and the stainless steel current collecting column through a gap so as to prevent the magnesium alloy anode from being corroded in an accelerated manner.
The inverted funnel-shaped insulating water sealing piece is made of hard insulating corrosion-resistant materials and is sleeved on the top of the magnesium alloy anode, and the stainless steel current collecting column extends out of the opening.
The water sealant between the inverted funnel-shaped sealing piece and the magnesium alloy anode is seawater corrosion resistant water sealant, is poured into a gap between the inner side of the inverted funnel-shaped insulating water sealing piece and the magnesium alloy anode, hydrogen generated by hydrogen evolution reaction upwards fills the gap between the inverted funnel-shaped insulating water sealing piece and the magnesium alloy anode, can effectively inhibit seawater from further upwards permeating along a corrosion gap, can also avoid a stainless steel collecting column from touching seawater, and cannot accelerate corrosion of the magnesium alloy anode.
The carbon fiber brush is surrounded and arranged round frame and is made of titanium alloy materials, is a fixing part of the overall structure of the seawater battery, is a fixing part of the cathode of the carbon fiber brush, and is a current transmission part of the cathode of the carbon fiber brush.
The carbon fiber brushes are connected in parallel and surround the alternate arrangement structure, are connected in parallel from inside to outside in multiple circles, and are fixed on the circular frame through titanium alloy screws at two ends, so that the cathodes of the carbon fiber brushes are convenient to disassemble and replace. And current passes through the multi-circle carbon fiber brush current collecting piece, and all current is collected at the carbon fiber brush parallel current collecting cable connecting piece.
The magnesium alloy anode and carbon fiber brush cathode electrical connection part sealing structure 1 is composed of the following components:
the magnesium alloy anode 4 connecting cable extrusion sealing element A101 and the carbon fiber brush cathode connecting cable extrusion sealing element B103 are made of titanium alloy materials, are fixed on the upper surface and the side surface of a cubic sealing shell 102 (made of titanium alloy materials and filled with water sealing insulating glue) at the electrical connection part of the magnesium alloy anode and the carbon fiber brush cathode, are internally provided with extrusion sealing rubber gaskets 1013 and extrusion gaskets 1012 made of titanium alloy materials, and are jointly extruded through the upper part 1011 of the extrusion sealing element and the lower part 1014 of the extrusion sealing element to realize the water sealing of the cable.
The carbon fiber brush parallel current collecting cable connecting piece 104 is made of titanium alloy materials, is provided with internal threads, is connected with a carbon fiber brush cathode cable through a right-angle copper terminal through screws, and extends out through an extrusion sealing piece B103.
The magnesium alloy anode current collecting cable is connected with the stainless steel current collecting column 105, is made of stainless steel, is provided with internal threads and external threads, is connected with the magnesium alloy anode cable through a right-angle copper terminal through screws, and extends out of the cable through the extrusion sealing element 101.
The magnesium alloy anode current-collecting cable is connected with a stainless steel current-collecting column screw 106, is made of stainless steel materials, is matched with a stainless steel current-collecting column, and is fixed with the magnesium alloy anode 4 through the external thread of the current-collecting column 105.
The insulating gasket 107 is made of insulating rubber, is matched with the stainless steel column collecting screw 106, and is screwed and fixed through the screw 106, so that the magnesium alloy anode 4 and the electrical connection piece of the magnesium alloy anode and the carbon fiber brush cathode are insulated from the frame fixing piece 108 (which is a titanium alloy plate with a hole in the middle) and also insulated from the carbon fiber brush cathode 3.
The insulating extrusion sealing gasket 109 is an insulating corrosion-resistant rubber wafer, the middle of the insulating extrusion sealing gasket is provided with a hole, and the frame fixing piece 108 and the inverted funnel-shaped insulating water sealing piece 110 are used for clamping and extruding water seal to prevent seawater from entering the joint of the magnesium alloy anode 4 and the stainless steel current collecting column 105 through gaps so as to prevent the magnesium alloy anode 4 from being corroded in an accelerated manner.
The inverted funnel-shaped insulating water sealing piece 110 is made of hard insulating corrosion-resistant materials and is sleeved on the top of the magnesium alloy anode 4, and the stainless steel current collecting column 105 extends out of the opening.
The water sealant 111 between the inverted funnel-shaped sealing piece and the magnesium alloy anode is seawater corrosion resistant water sealant, is poured into a gap between the inner side of the inverted funnel-shaped insulating water sealing piece 110 and the magnesium alloy anode 4, hydrogen generated by hydrogen evolution reaction upwards fills the gap between the inverted funnel-shaped insulating water sealing piece and the magnesium alloy anode 4, can effectively inhibit seawater from further upwards permeating along a corrosion gap, can also avoid the stainless steel collector column 105 from touching seawater, cannot accelerate the corrosion of the magnesium alloy anode 4, and ensures the stable discharge of the magnesium seawater dissolved oxygen battery.
The structure 2 with the multiple circles of carbon fiber brushes alternately arranged in parallel and in surrounding mode is composed of:
the carbon fiber brushes are arranged around the circular frame 201, are made of titanium alloy materials, are fixing parts of the overall structure of the seawater battery, are fixing parts of the cathodes of the carbon fiber brushes and are current transmission parts of the cathodes of the carbon fiber brushes.
The carbon fiber brushes are connected in parallel and alternately arranged in a surrounding mode 202 in a multi-turn mode from inside to outside, the carbon fiber brushes are connected in parallel, two ends of the carbon fiber brush cathode 3 are fixed on the circular frame 201 through titanium alloy screws, and the carbon fiber brush cathode 3 is convenient to disassemble and replace. The current passes through the multi-turn carbon fiber brush current collector 203 and all of the current is collected at the carbon fiber brush parallel current collection cable connector 104.
The working principle of the invention is as follows:
the battery with the structure is distributed and used in seawater, the seawater is used as electrolyte, dissolved oxygen in the seawater is catalytically reduced by the carbon fiber brush cathode 3 to obtain electrons, the magnesium alloy anode 4 loses electrons through discharging, the sealing structure 1 at the cathode connection part of the magnesium alloy anode and the carbon fiber brush cathode assists the seawater dissolved oxygen battery to discharge integrally and stably, the current of the seawater dissolved oxygen battery is effectively improved by the multi-circle carbon fiber brush parallel connection and surrounding alternate arrangement structure 2, the power performance of the seawater battery is improved, and the seawater battery overall structure is formed by the above components.
The magnesium alloy anode and carbon fiber brush cathode electrical connection part sealing structure is composed of the following components: the magnesium alloy anode connecting cable extrusion sealing element and the carbon fiber brush cathode connecting cable extrusion sealing element are both made of TC1 titanium alloy materials, are fixed on the upper surface and the side surface of a cubic sealing shell (made of TC1 titanium alloy materials and filled with epoxy resin transparent pouring sealant) at the connecting part of the magnesium alloy anode and the carbon fiber brush cathode, and are internally provided with an ethylene propylene diene monomer rubber extrusion sealing sealant rubber pad and two extrusion gaskets made of titanium alloy to realize water sealing of the cable through co-extrusion on the extrusion sealing elements and under the extrusion sealing elements.
The carbon fiber brush parallel connection current collection cable connecting piece is made of TC1 titanium alloy materials, is provided with M8 internal threads, is connected with a carbon fiber brush cathode cable through a right-angle copper terminal through a screw, and extends out of the cable through an extrusion sealing piece. The stainless steel current collection post is connected to magnesium alloy positive pole current collection cable, and diameter 20mm, length 120mm are 316 stainless steel, have internal thread and external screw thread, are connected through screw thread and magnesium alloy positive pole, pass through screwed connection through right angle copper terminal and magnesium alloy positive pole cable, and the cable stretches out through the extrusion sealing member. The magnesium alloy anode current-collecting cable is connected with a stainless steel current-collecting column screw, is made of 316 stainless steel materials, is matched with a 316 stainless steel current-collecting column, and is used for fixing a magnesium alloy anode through external threads of the current-collecting column, wherein the diameter of the magnesium alloy anode is 120mm, the length of the magnesium alloy anode is 285mm, and the exposed length of the magnesium alloy anode is 250 mm. The insulating gasket is made of polytetrafluoroethylene, is matched with a stainless steel column collecting screw, and is screwed and fixed through the screw, so that the magnesium alloy anode is insulated from the frame fixing piece (the thickness of the frame fixing piece is 20mm, and the TC1 titanium alloy material) and is also insulated from the carbon fiber brush cathode. The insulating extrusion sealing gasket is a fluororubber circular sheet, has a hole with the middle diameter of 26mm, and is clamped and extruded to be watertight through the frame fixing piece and the inverted funnel-shaped insulating watertight sealing piece. The inverted funnel-shaped insulating water seal piece and the PVC material are sleeved on the top of the magnesium alloy anode, and the stainless steel flow concentration column extends out of the opening. The water sealant between the inverted funnel-shaped sealing piece and the magnesium alloy anode is epoxy resin transparent pouring sealant, is poured into a gap of 5mm between the inner side of the inverted funnel-shaped insulating water sealing piece and the magnesium alloy anode, hydrogen generated by hydrogen evolution reaction upwards fills the gap between the inverted funnel-shaped insulating water sealing piece and the magnesium alloy anode, can effectively inhibit seawater from further upwards permeating along a corrosion gap, can also avoid a stainless steel collecting column from touching seawater, cannot accelerate corrosion of the magnesium alloy anode, and ensures stable discharge of the magnesium seawater dissolved oxygen battery.
The structure with the multiple circles of carbon fiber brushes alternately arranged in parallel and in surrounding mode comprises the following components: the carbon fiber brush encircles the circular frame of arranging, is TC1 titanium alloy material, and thickness 2mm, size 600X 460mm are sea water battery overall structure mounting, are the anodal mounting of carbon fiber brush, are the anodal current transmission spare of carbon fiber brush. The carbon fiber brushes are connected in parallel and alternately arranged in a surrounding mode, the carbon fiber brushes are 2 circles from inside to outside, the diameter of each carbon fiber brush is 70mm, the length of each carbon fiber brush is 180mm, 32 carbon fiber brushes are connected in parallel, TC1 titanium alloy material sheets are extruded at the two ends of each carbon fiber brush, M6 holes are formed in the carbon fiber brushes, the carbon fiber brushes are fixed on the circular frame through matched TC1 titanium alloy screws, and the carbon fiber brush cathodes are convenient to disassemble and replace. The current passes through the multi-circle carbon fiber brush current collecting piece, and all the current is collected at the carbon fiber brush parallel current collecting cable connecting piece.
FIG. 6 is a time-voltage curve under constant current discharge of 1A in shallow sea (water depth 7-9 m, affected by tide) designed for magnesium seawater dissolved oxygen battery. Within 140 hours from the beginning of discharging, the discharging voltage of the battery is gradually reduced to 1.52V at the lowest; and then the discharge voltage is continuously increased to reach 1.7V after 240 hours, and the discharge voltage of the seawater battery is stabilized in the range of 1.7-1.8V until 3000 hours.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A magnesium seawater dissolved oxygen battery is characterized by at least comprising:
two annular frames (201) coaxially arranged; a carbon fiber brush current collecting piece (203) is arranged at the central shaft of each circular frame (201);
a plurality of circles of carbon fiber brushes (202) uniformly distributed around the carbon fiber brush current collector (203);
a magnesium alloy anode (4) positioned between the two circular frames (201); the upper end of the magnesium alloy anode (4) is connected with the central shaft on the lower surface of the upper annular frame through a sealing structure (1); the length of the magnesium alloy anode (4) is less than the distance between the two circular frames (201); wherein:
the seal structure (1) includes:
an inverted funnel-shaped insulating water sealing member (110) positioned at the upper end of the magnesium alloy anode (4); a water sealant (111) is filled between the inverted funnel-shaped insulating water sealing piece (110) and the magnesium alloy anode (4);
a fixing member (108) provided on an upper surface of the inverted funnel-shaped insulating water seal member (110);
a sealed housing (102) positioned over the fixture (108); the sealing shell (102) is provided with an extrusion sealing piece B (103) and a current collection cable connecting piece (104);
a press seal A (101) located above the seal case (102);
a stainless steel collecting column (105) of a fixing piece (108), an inverted funnel-shaped insulating water sealing piece (110) and a magnesium alloy anode (4) are inserted from top to bottom in sequence; the stainless steel collecting column (105) is provided with an external thread for connecting with a screw (106).
2. The magnesium seawater dissolved oxygen battery of claim 1, wherein: an insulating gasket (107) is arranged between the screw (106) and the fixing piece (108).
3. The magnesium seawater dissolved oxygen battery of claim 1, wherein: and an insulating extrusion sealing gasket (109) is arranged between the fixing piece (108) and the inverted funnel-shaped insulating water sealing piece (110).
4. The magnesium seawater dissolved oxygen battery of claim 1, wherein: the structure of the compression seal A (101) is the same as that of the compression seal B (103).
5. The magnesium seawater dissolved oxygen battery of claim 4, wherein: the extrusion sealing element A (101) comprises an ethylene propylene diene monomer extrusion sealing ring (1013), an extrusion gasket (1012) positioned above and below the ethylene propylene diene monomer extrusion sealing ring (1013), a lower extrusion sealing element (1014) positioned below the lower extrusion gasket, and an upper extrusion sealing element (1011) positioned above the upper extrusion gasket.
6. The magnesium seawater dissolved oxygen battery of claim 1, wherein: the sealing shell (102) is a square titanium alloy part, and water sealing insulating glue is filled in the sealing shell.
7. The magnesium seawater dissolved oxygen battery of claim 1, wherein: the carbon fiber brush is connected with the annular frame (201) through a titanium alloy screw, and the cathode of the carbon fiber brush is bound into a bottle brush shape through a titanium wire.
8. The magnesium seawater dissolved oxygen battery of claim 1, wherein: the inverted funnel-shaped insulating water sealing piece (110) is made of hard insulating corrosion-resistant materials.
9. The magnesium seawater dissolved oxygen battery of claim 1, wherein: the annular frame (201) is made of titanium alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788684.6A CN113506863A (en) | 2021-07-13 | 2021-07-13 | Magnesium seawater dissolved oxygen battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788684.6A CN113506863A (en) | 2021-07-13 | 2021-07-13 | Magnesium seawater dissolved oxygen battery |
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| CN113506863A true CN113506863A (en) | 2021-10-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859136A (en) * | 1973-05-18 | 1975-01-07 | Esb Inc | Seawater battery with valve |
| JPH07230813A (en) * | 1994-02-15 | 1995-08-29 | Yuasa Corp | Sea water battery |
| US20130236763A1 (en) * | 2010-11-29 | 2013-09-12 | Gongquan Sun | Seawater battery of dissolved oxygen type |
| CN105489834A (en) * | 2015-11-26 | 2016-04-13 | 中国电子科技集团公司第十八研究所 | Magnesium seawater battery anode and manufacturing method |
| CN111224198A (en) * | 2020-03-20 | 2020-06-02 | 中国船舶重工集团公司第七二五研究所 | Aluminum alloy-carbon fiber seawater dissolved oxygen battery |
-
2021
- 2021-07-13 CN CN202110788684.6A patent/CN113506863A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859136A (en) * | 1973-05-18 | 1975-01-07 | Esb Inc | Seawater battery with valve |
| JPH07230813A (en) * | 1994-02-15 | 1995-08-29 | Yuasa Corp | Sea water battery |
| US20130236763A1 (en) * | 2010-11-29 | 2013-09-12 | Gongquan Sun | Seawater battery of dissolved oxygen type |
| CN105489834A (en) * | 2015-11-26 | 2016-04-13 | 中国电子科技集团公司第十八研究所 | Magnesium seawater battery anode and manufacturing method |
| CN111224198A (en) * | 2020-03-20 | 2020-06-02 | 中国船舶重工集团公司第七二五研究所 | Aluminum alloy-carbon fiber seawater dissolved oxygen battery |
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