CN111370229A - Improved structure of metallized safety film explosion-proof capacitor - Google Patents
Improved structure of metallized safety film explosion-proof capacitor Download PDFInfo
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- CN111370229A CN111370229A CN202010184245.XA CN202010184245A CN111370229A CN 111370229 A CN111370229 A CN 111370229A CN 202010184245 A CN202010184245 A CN 202010184245A CN 111370229 A CN111370229 A CN 111370229A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0003—Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
Abstract
The invention discloses an improved structure of a metallized safety film explosion-proof capacitor, which mainly uses graphene mixed with activated carbon and doped with nickel oxide as a first electrode layer of a first polar plate, so that the characteristic that the graphene has good conductivity can be kept, the problem of small energy density of the graphene is solved through the nickel oxide, and the conductivity and the energy density of the whole metallized safety film explosion-proof capacitor can be greatly improved. In addition, the graphene mixed with the activated carbon and doped with the tungsten oxide can be used as a second electrode layer of the second electrode plate, so that the first electrode and the second electrode are matched with each other, the conductivity is better, the surface area is larger, the internal resistance of the whole body is greatly reduced, the whole body can have more complete capacitance characteristics, and the specific capacitance, the power density, the energy density and the like can be well expressed.
Description
Technical Field
The invention relates to the technical field of capacitors, in particular to an improved structure of a metallized safety film explosion-proof capacitor.
Background
As electronic products are continuously developed, consumers have demands on the electronic products in terms of performance, innovation, and appearance, and also gradually pay attention to whether the electronic products can be continuously used for a long time. However, since the conventional storage battery is slightly insufficient in energy storage performance, the storage battery has excellent performance in energy storage performance and output power since the capacitor gradually begins to be developed, so that competitive research is carried out to greatly improve the output power and energy storage capacity of the capacitor.
Disclosure of Invention
Aiming at the problems, the invention provides an improved structure of a metallized safety film explosion-proof capacitor, which adopts the following technical scheme:
the utility model provides an explosion-proof type condenser configuration amendment of metallized safety film which characterized in that includes:
the capacitor comprises a shell and a metallized safety film explosion-proof capacitor body, wherein the metallized safety film explosion-proof capacitor body is arranged in the shell and comprises a first polar plate, the first polar plate comprises a first substrate and a first electrode layer arranged on the surface of the first substrate, and the first electrode layer is made of graphene mixed activated carbon and doped with nickel oxide;
the first electrode plate is manufactured by the following method:
(1) adding activated carbon powder into the graphene solution, stirring for a period of time, putting into an oven, baking for a period of time at the temperature of 200 ℃, and then grinding to obtain first mixed powder of graphene mixed activated carbon.
(2) Putting nickel acetate powder and a dimethoxy ethanol solution into a first container, soaking the first container into oil body at 90 ℃, stirring the liquid in the first container for a period of time, and standing the first container until the temperature is reduced to room temperature.
(3) Adding the first mixed powder into the first container, stirring for a period of time to obtain a first mixed solution, and filtering the first mixed solution to obtain a first slurry; and carrying out heat treatment on the first slurry, then standing until the temperature is reduced to room temperature, and then grinding to obtain second mixed powder of the graphene mixed activated carbon and doped nickel oxide.
(4) And adding polyvinyl butyral powder into a dimethylvinylamine solution, mixing and stirring to obtain an adhesive, and adding the second mixed powder into the adhesive to obtain a first coating paste.
(5) And arranging the first coating paste on the surface of the first substrate, rotating the first substrate for a period of time, and then baking the first substrate in an oven at the temperature of 200 ℃ for a period of time to enable the first coating paste to form the first electrode layer.
Compared with the prior art, the invention has the advantages that: the first electrode layer is made of graphene mixed with activated carbon and doped with nickel oxide, so that the characteristic of good conductivity of graphene is retained, and the problem of small energy density of graphene is solved through nickel oxide, so that the conductivity and the energy density of the whole metallized safety film explosion-proof capacitor can be greatly improved.
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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the appearance of the present creation
FIG. 2 is a schematic view of an embodiment of a conductive terminal
FIG. 3 shows a method for fabricating a plate
FIG. 4 shows a method for preparing an electrolyte
FIG. 5 is a schematic view showing the connection of the components
FIG. 6 is a schematic diagram of a layered structure of a first plate and a second plate
The figures in the drawings represent:
1 casing
11 ceiling wall
2 metallized safety film explosion-proof capacitor body
21 first electrode
211 first substrate
212 first electrode layer
22 second electrode
221 second substrate
222 second electrode layer
3 conductive terminal
4 strip plate
5 discharge resistance
6 temperature controller
7 breaker
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
Referring to fig. 1 and 6, the present invention relates to an improved structure of an explosion-proof capacitor with a metallized safety film, which is characterized in that the structure comprises:
the capacitor comprises a shell 1 and a metallized safety film explosion-proof capacitor body 2, wherein the metallized safety film explosion-proof capacitor body 2 is arranged in the shell 1, the metallized safety film explosion-proof capacitor body 2 comprises a first polar plate 21 and a second polar plate 22, the first polar plate 21 is preferably used as an anode, the second polar plate 22 is preferably used as a cathode, the first polar plate 21 comprises a first substrate 211 and a first electrode layer 212 arranged on the surface of the first substrate 211, and the first electrode layer 212 is made of graphene mixed activated carbon and doped with nickel oxide; the second electrode plate 22 includes a second substrate 221 and a second electrode layer 222 disposed on a surface of the second substrate 221, and the second electrode layer 222 is made of graphene mixed with activated carbon and doped with tungsten oxide. Fig. 6 is only for illustrating the layered structure of the first and second electrode plates 21 and 22.
Referring to fig. 3, the first electrode plate 21 is fabricated by:
(1) adding activated carbon powder into the graphene solution, stirring for a period of time, putting into an oven, baking for a period of time at the temperature of 200 ℃, and then grinding to obtain first mixed powder of graphene mixed activated carbon.
Before the manufacturing method (1) is performed, the graphene solution is preferably stirred for a period of time to allow the graphene solution to have a better dispersion degree, and the activated carbon powder is baked for a period of time to remove moisture on the surface.
(2) Putting nickel acetate powder and a dimethoxy ethanol solution into a first container, soaking the first container in oil body at 90 ℃, stirring the liquid in the first container for a period of time, and standing the first container until the temperature is reduced to room temperature, thereby obtaining a nickel oxide solution.
(3) Adding the first mixed powder into the first container, stirring for a period of time to obtain a first mixed solution, and filtering the first mixed solution to obtain a first slurry; and carrying out heat treatment on the first slurry, then standing until the temperature is reduced to room temperature, heating the temperature to 250 ℃ in a constant speed mode in the process, standing for a period of time, then reducing the temperature to the room temperature, and then grinding to obtain second mixed powder of the graphene mixed activated carbon and the doped nickel oxide.
(4) And adding polyvinyl butyral powder into a dimethylvinylamine solution, mixing and stirring to obtain an adhesive, and adding the second mixed powder into the adhesive, and stirring to obtain a first coating paste.
(5) The first coating paste is arranged on the surface of the first substrate 211, the first substrate 211 is rotated for a period of time to remove the redundant paste, and then the first substrate 211 is put into an oven to be baked for a period of time at the temperature of 200 ℃, so that the first coating paste forms the first electrode layer 212.
The method of making the second plate 22 is described initially below:
(6) adding tungstic acid powder and hydrogen peroxide into a second container, soaking the second container in oil bodies at 90 ℃, stirring the liquid in the second container for a period of time, adding dimethyl ethanol into the second container, stirring the liquid in the second container for a period of time, standing the second container until the temperature is reduced to room temperature, and obtaining the tungsten oxide solution.
(7) Adding the first mixed powder into the second container, stirring for a period of time to obtain a second mixed solution, and filtering the second mixed solution to obtain a second slurry; and carrying out heat treatment on the second slurry, then standing until the temperature is reduced to room temperature, heating the temperature to 100 ℃ in a constant speed mode in the process, standing for a period of time, then reducing the temperature to the room temperature, and then grinding to obtain third mixed powder of the graphene mixed activated carbon and the doped tungsten oxide.
(8) Adding the third mixed powder into an adhesive, and stirring to obtain a second coating paste; the second coating paste is disposed on the surface of the second substrate 221, and after the second substrate 221 is rotated for a period of time, the second substrate 221 is placed in an oven and baked at a temperature of 200 ℃ for a period of time, so that the second coating paste forms the second electrode layer 222.
The invention uses the first polar plate and the second polar plate as the anode and the cathode respectively, which not only has better conductivity, but also has larger surface area, and can greatly reduce the integral internal resistance, so that the metallized safety film explosion-proof capacitor body 2 can have more complete capacitance characteristics, and has good performance in the aspects of specific capacitance value, power density, energy density and the like.
Example 2:
referring to fig. 4, the electrolyte of the metallized rupture disk capacitor body 2 is preferably a colloidal polyelectrolyte film. The following describes a method of manufacturing the colloidal polyelectrolyte thin film:
(1) adding polyethylene glycol (PEG), deionized water and nitrogen into a double-neck reactor, heating and stirring for a period of time, preferably at about 40 ℃, adding acrylonitrile (PAN) into the double-neck reactor, and heating and stirring for a period of time, preferably at about 40 ℃; dissolving ceric nitrate amine into a nitric acid solution to obtain a third mixed solution; and slowly adding the third mixed solution into the double-neck reactor until complete reaction to obtain a heterogeneous solution, performing air-suction filtration on the heterogeneous solution, then repeatedly cleaning the heterogeneous solution by deionized water and acetone for multiple times, and then performing drying treatment, preferably drying the heterogeneous solution in a vacuum oven at about 80 ℃ to obtain PAN-b-PEG-b-PAN triblock copolymer polymer, wherein the chain segment ratio between AN and EG in the PAN-b-PEG-b-PAN triblock copolymer polymer can be adjusted by changing the weight of acrylonitrile. The molecular formula of the PAN-b-PEG-b-PAN triblock copolymer is as follows:
(2) putting PAN-b-PEG-b-PAN triblock copolymer polymer, lithium perchlorate and dimethylformamide into a container, heating the container by a high-temperature oven at about 80 ℃ to obtain a homogeneous polymer electrolyte solution, putting a trace (such as 0.1g) of the homogeneous polymer electrolyte solution into an aluminum disc, and heating the aluminum disc to evaporate the dimethylformamide to obtain the colloidal polymer electrolyte film.
The colloidal polyelectrolyte film has a special linear structure through the triblock copolymer, and can effectively reduce the ion mobility resistance (equivalent series resistance) and the mass transfer diffusion resistance (Warburgregation) in impedance. In sum, the synergistic effect of acrylonitrile and ethylene glycol greatly improves the surface of the self-healing dry capacitor in terms of energy storage performance, specific energy, specific power and the like, for example, the specific power is 10 kW kg-1Under the condition of (1), the specific energy can reach up to 21Wh kg-1At a low discharge rate of 0.12A g-1Under the condition of (2), the maximum specific energy can also be up to 30kW kg-1。
Example 3:
please refer to fig. 2, the embodiment is: the surface of the shell 1 is provided with a plurality of conductive terminals 3 which are arranged in sequence at intervals, each conductive terminal 3 is electrically connected with the metallized safety film explosion-proof capacitor body 2, the bottom end of each conductive terminal 3 penetrates through the top wall 11 of the shell 1 and the strip-shaped plate body 4 in sequence, and a space is formed between the strip-shaped plate body 4 and the top wall 11 of the shell 1.
Therefore, through the top wall 11 and the strip-shaped plate 4 which are spaced apart from each other, the conductive terminals 3 can be more stably disposed on the top surface of the housing 1, and are not easily damaged by external force.
Example 4:
referring to fig. 5, in order to ensure the safety of the present invention during the use of electricity, the present invention further makes each conductive terminal 3 electrically connected to a discharge resistor 5, and each discharge resistor 5 is disposed outside the top wall 11 of the housing 1.
Example 5:
referring to fig. 5, in order to ensure the safety of the power utilization of the present invention, the operation is stopped when the temperature rises to the default value to avoid accidents, and for this reason, the present invention may further be implemented as follows: the shell 1 is internally provided with a temperature controller 6, a circuit breaker 7 is arranged at one section of a path of each conductive terminal 3 electrically connected with the metallized safety film explosion-proof capacitor body 2, and when the temperature controller 6 detects that the temperature of the metallized safety film explosion-proof capacitor body 2 exceeds the default temperature, the circuit breaker 7 is controlled to form a circuit break.
Example 6:
in order to avoid the over-high temperature of the present creation during use, the housing 1 is preferably made of metal material, and a plurality of heat dissipation fins are disposed on the outer side of the housing, so that the creation can keep a low temperature during use and is not easy to cause accidents.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an explosion-proof type condenser configuration amendment of metallized safety film which characterized in that includes:
the capacitor comprises a shell and a metallized safety film explosion-proof capacitor body, wherein the metallized safety film explosion-proof capacitor body is arranged in the shell and comprises a first polar plate, the first polar plate comprises a first substrate and a first electrode layer arranged on the surface of the first substrate, and the first electrode layer is made of graphene mixed activated carbon and doped with nickel oxide;
the first electrode plate is manufactured by the following method:
(1) adding activated carbon powder into the graphene solution, stirring for a period of time, putting into an oven, baking for a period of time at the temperature of 200 ℃, and then grinding to obtain first mixed powder of graphene mixed activated carbon;
(2) putting nickel acetate powder and a dimethoxy ethanol solution into a first container, soaking the first container in oil body at 90 ℃, stirring the liquid in the first container for a period of time, and standing the first container until the temperature is reduced to room temperature;
(3) adding the first mixed powder into the first container, stirring for a period of time to obtain a first mixed solution, and filtering the first mixed solution to obtain a first slurry; carrying out heat treatment on the first slurry, then standing until the temperature is reduced to room temperature, and then grinding to obtain second mixed powder of the graphene mixed with the activated carbon and doped with nickel oxide;
(4) adding polyvinyl butyral powder into a dimethylvinylamine solution, mixing and stirring to obtain an adhesive, and adding the second mixed powder into the adhesive to obtain a first coating paste;
(5) and arranging the first coating paste on the surface of the first substrate, rotating the first substrate for a period of time, and then baking the first substrate in an oven at the temperature of 200 ℃ for a period of time to enable the first coating paste to form the first electrode layer.
2. The improved structure of the metallized rupture disk explosion-proof capacitor as claimed in claim 1, wherein the metallized rupture disk explosion-proof capacitor body comprises a second plate, the first plate is used as an anode, the second plate is used as a cathode, the second plate comprises a second substrate and a second electrode layer arranged on the surface of the second substrate, the second electrode layer is made of graphene mixed with activated carbon and doped with tungsten oxide, and the second electrode layer is made by the following steps:
(6) adding tungstic acid powder and hydrogen peroxide into a second container, soaking the second container in oil bodies at 90 ℃, stirring liquid in the second container for a period of time, adding dimethyl ethanol into the second container, stirring the liquid in the second container for a period of time, and standing the second container until the temperature is reduced to room temperature;
(7) adding the first mixed powder into the second container, stirring for a period of time to obtain a second mixed solution, and filtering the second mixed solution to obtain a second slurry; carrying out heat treatment on the second slurry, then standing until the temperature is reduced to room temperature, and then grinding to obtain third mixed powder of the graphene mixed with the activated carbon and doped with tungsten oxide;
(8) adding the third mixed powder into an adhesive to obtain a second coating paste; and arranging the second coating paste on the surface of the second substrate, rotating the second substrate for a period of time, and then baking the second substrate in an oven at the temperature of 200 ℃ for a period of time to enable the second coating paste to form the second electrode layer.
3. The improvement of the structure of the metallized safety film explosion-proof capacitor as claimed in claim 2, wherein before the manufacturing method (1) is performed, the graphene solution is stirred for a period of time, and the activated carbon powder is baked for a period of time.
4. The improved structure of the metallized rupture disk capacitor as claimed in claim 3, wherein the electrolyte of the metallized rupture disk capacitor body is a colloidal polyelectrolyte film, and the colloidal polyelectrolyte film is prepared by the following steps:
(1) adding polyethylene glycol (PEG), deionized water and nitrogen into a double-neck reactor, heating and stirring for a period of time, adding acrylonitrile (PAN) into the double-neck reactor, and heating and stirring for a period of time; dissolving ceric nitrate amine into a nitric acid solution to obtain a third mixed solution; slowly adding the third mixed solution into the double-neck reactor, obtaining a heterogeneous solution after complete reaction, performing air-extraction filtration on the heterogeneous solution, then respectively cleaning with deionized water and acetone, and then drying to obtain a PAN-b-PEG-b-PAN triblock copolymer polymer; the molecular formula of the PAN-b-PEG-b-PAN triblock copolymer is as follows:
(2) putting PAN-b-PEG-b-PAN triblock copolymer polymer, lithium perchlorate and dimethylformamide into a container, heating the container by a high-temperature oven to obtain homogeneous polyelectrolyte solution, putting a trace amount of the homogeneous polyelectrolyte solution into an aluminum disc, and heating the aluminum disc to evaporate the dimethylformamide to obtain the colloidal polyelectrolyte film.
5. The improved structure of the metallized rupture disk explosion-proof capacitor as claimed in claim 4, wherein the housing has a plurality of conductive terminals arranged in sequence at intervals, each conductive terminal is electrically connected to the metallized rupture disk explosion-proof capacitor body, the bottom end of each conductive terminal is inserted through the top wall of the housing and the strip plate in sequence, and a space is formed between the strip plate and the top wall of the housing.
6. The improved structure of the metallized safety film explosion-proof capacitor as claimed in claim 5, wherein each conductive terminal is electrically connected to a discharge resistor, and each discharge resistor is disposed outside the top wall of the housing.
7. The improvement of claim 6, wherein a temperature controller is disposed in the housing, and a circuit breaker is disposed at a section of the path where each conductive terminal is electrically connected to the metallized rupture capacitor body, and when the temperature controller detects that the temperature of the metallized rupture capacitor body exceeds a predetermined temperature, the circuit breaker is controlled to open.
8. The improved structure of the metallized safety film explosion-proof capacitor as claimed in claim 7, wherein the housing is made of metal material, and a plurality of heat dissipation fins are disposed on the outer side of the housing.
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| CN202010184245.XA CN111370229A (en) | 2020-03-17 | 2020-03-17 | Improved structure of metallized safety film explosion-proof capacitor |
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| CN202010184245.XA CN111370229A (en) | 2020-03-17 | 2020-03-17 | Improved structure of metallized safety film explosion-proof capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111863452A (en) * | 2020-07-15 | 2020-10-30 | 宁波市江北九方和荣电气有限公司 | Oil-immersed capacitor with explosion-proof and flame-retardant structure |
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Application publication date: 20200703 |