CN108899200A - A kind of recombiner condenser, preparation method and application - Google Patents

A kind of recombiner condenser, preparation method and application Download PDF

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Publication number
CN108899200A
CN108899200A CN201810457807.6A CN201810457807A CN108899200A CN 108899200 A CN108899200 A CN 108899200A CN 201810457807 A CN201810457807 A CN 201810457807A CN 108899200 A CN108899200 A CN 108899200A
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CN
China
Prior art keywords
recombiner condenser
shell
leading
out piece
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810457807.6A
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Chinese (zh)
Inventor
王党辉
黎旗明
李建全
黄镇萍
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Ramway New Energy Co Ltd
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Ramway New Energy Co Ltd
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Filing date
Publication date
Application filed by Ramway New Energy Co Ltd filed Critical Ramway New Energy Co Ltd
Priority to CN201810457807.6A priority Critical patent/CN108899200A/en
Publication of CN108899200A publication Critical patent/CN108899200A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10Housing; Encapsulation
    • H01G2/103Sealings, e.g. for lead-in wires; Covers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G13/00Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
    • H01G13/003Apparatus or processes for encapsulating capacitors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/12Protection against corrosion

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The present invention provides a kind of recombiner condenser, and capacitor includes capacitor winding assembly, the anti-fluorine lid that accommodates the shell of capacitor winding assembly and match with shell, and shell and capacitor winding assembly form cavity, and anti-fluorine lid seals recombiner condenser;Capacitor winding assembly includes capacitor core, positive leading-out piece and cathode leading-out piece, and capacitor core is coaxial winding-structure, and positive leading-out piece and cathode leading-out piece are arranged in capacitor core both ends, cathode leading-out piece and cage connection;Anti- fluorine lid includes the positive pole piece for being in inverted " t ", the cover for being divided into the insulator of positive pole piece two sides and connecting with the insulator, positive leading-out piece is connect with positive pole piece, and the material of composite insulator includes one or both of not silica containing glass or not silica containing ceramics.The beneficial effects of the present invention are the service life that recombiner condenser all-sealed structure improves recombiner condenser, recombiner condenser is able to take the variation of -40~85 DEG C of broad temperature ranges, and chemical property is more excellent.

Description

A kind of recombiner condenser, preparation method and application
Technical field
The present invention is battery and capacitor field, and in particular to a kind of recombiner condenser, preparation method and application.
Background technique
With the continuous development of technology of Internet of things and national smart grid, industrial control product, battery and recombiner condenser are produced The performance requirement of product is higher and higher.Although lithium primary battery especially lithium thionyl chloride cell has wide temperature range, It is that it haves the shortcomings that significant voltage delay, multiplying power fan-out capability are weak.
The positive and negative anodes isolation of hermetically sealed recombiner condenser is to be sintered to be formed with metal-glass, the electrolysis of present recombiner condenser Liquid electrolyte component is all lithium hexafluoro phosphate(LiPF6)Material, the material can generate a small amount of free hydrofluoric acid(HF), hydrofluoric acid Silica in etching glass(SiO2), and generate water(H2O), H2O continues and LiPF6Reaction generates HF, so causes to make It is corroded for the glass insulation terminal of recombiner condenser positive and negative anodes is isolated, eventually leads to capacitor leakage failure.To avoid the feelings The design of condition majority is isolated by the way of metal-plastic riveting, cannot because the temperature expansion coefficient of plastic-metal is different Accomplish really hermetically sealed.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of recombiner condenser, preparation method and application.
Specific technical solution is as follows:
A kind of recombiner condenser, the difference is that, the capacitor includes capacitor winding assembly, accommodates the capacitor winding The shell of component and the anti-fluorine lid matched with the shell, the shell and the capacitor winding assembly form cavity, described Anti- fluorine lid seals the recombiner condenser;
The capacitor winding assembly includes capacitor core, positive leading-out piece and cathode leading-out piece, and the capacitor core is coaxial volume Around structure, the anode leading-out piece and the cathode leading-out piece are arranged at capacitor core both ends, the cathode leading-out piece with The cage connection;
The anti-fluorine lid include in inverted " t " positive pole piece, be divided into the positive pole piece two sides insulator and with the insulator The cover of connection, the anode leading-out piece are connect with the positive pole piece, and the material of the composite insulator includes being free of titanium dioxide One or both of the glass of silicon or not silica containing ceramics;
In above-mentioned technical proposal, the electrolyte of the ingredient containing lithium hexafluoro phosphate is perfused in the recombiner condenser;The cover is set There are liquid injection hole and sealant beads, in the cavity that shell described in the electrolyte filling and the capacitor winding assembly are formed, uses institute It states sealant beads and seals the liquid injection hole.
In above-mentioned technical proposal, the anode leading-out piece and the positive plate laser welding, the cathode leading-out piece and institute State shell laser welding, the anti-fluorine lid and the shell laser welding.
In above-mentioned technical proposal, laser fusion welding is used between the anti-fluorine lid and the shell.
In above-mentioned technical proposal, the material of the shell, positive pole piece and the sealant beads is stainless steel.
A kind of preparation method of above-mentioned recombiner condenser, the difference is that, include the following steps:
A:After the insulator, cover and positive pole piece again mold fixation, high temperature sintering is carried out under inert gas protection, is burnt Cool down after forming type, is then processed by shot blasting that the anti-fluorine lid is made;
B:The cathode leading-out piece is spoted weld on the shell, vacuum drying is then carried out and removes moisture removal, it, will be described after dry Positive leading-out piece is spoted weld in low moisture environments on the positive pole piece;
C:It after the anti-fluorine lid is pressed into the shell, is sintered and is melted together with laser welder in low moisture environments, formed Semi-finished product;
D:The electrolyte is injected into the semi-finished product in low moisture environments by liquid injection hole, it is then close with the sealant beads Envelope, is made the recombiner condenser.
In above-mentioned technical proposal, inert gas described in step A is nitrogen, and the high temperature sintering temperature is 1400 DEG C or more; Vacuum drying temperature described in step B is 80 DEG C ~ 90 DEG C, and drying time is 12 hours ~ 48 hours.
In above-mentioned technical proposal, step B, low moisture environments dew-point temperature described in C and step D is -40 DEG C, step D electrolyte Injection rate be 1.0g ~ 1.4g, the sealant beads are pressed into the liquid injection hole with cylinder.
A kind of application of above-mentioned recombiner condenser, the difference is that, the use temperature range of the recombiner condenser It is -40 DEG C ~ 85 DEG C.
The beneficial effects of the present invention are the uses of the anti-fluorine material of insulator, and corruption of the hydrofluoric acid to glass can be effectively prevented Erosion avoids the failure of capacitor, cooperates welded seal technique, forms the all-sealed structure of recombiner condenser, further mention The high service life of recombiner condenser;The metal coefficient of expansion identical with insulator glass material, make recombiner condenser be able to take- The variation of 40~+85 DEG C of broad temperature ranges, chemical property is more excellent, and especially in ultralow temperature, advantage is more It is obvious.
Detailed description of the invention
Fig. 1 is composite capacitor structure schematic diagram;
Wherein, 1- capacitor winding assembly, 2- shell, the anti-fluorine lid of 3-, 101- capacitor core, 102- anode leading-out piece, 103- cathode Leading-out piece, the positive pole piece of 301-, 302- insulator, 303- cover, the non-anti-fluorine part of 3021-, the anti-fluorine part of 3022-, 3031- liquid injection hole, 3032- sealant beads, 4- laser fusion welding pearl, 5- electrolyte.
Fig. 2 is pulse behaviors of the recombiner condenser at -40 DEG C;
It is brighter in harsh low temperature environment performance than domestic and same kind of products at abroad using the totally-enclosed recombiner condenser of the technology of the present invention It is aobvious good very much.
Fig. 3 is pulse behaviors of the recombiner condenser at -20 DEG C;
It is more preferable in low temperature environment performance compared to domestic and same kind of products at abroad using the totally-enclosed recombiner condenser of the technology of the present invention.
Fig. 4 is pulse behaviors of the recombiner condenser at 40 DEG C;
It is more preferable in hot environment performance compared to domestic and same kind of products at abroad using the totally-enclosed recombiner condenser of the technology of the present invention.
Fig. 5 is pulse behaviors of the recombiner condenser at 60 DEG C;
It is more preferable in hot environment performance compared to domestic and same kind of products at abroad using the totally-enclosed recombiner condenser of the technology of the present invention.
Fig. 6 is pulse behaviors of the recombiner condenser at 80 DEG C;
Using the totally-enclosed recombiner condenser of the technology of the present invention compared to domestic and same kind of products at abroad in harsh hot environment performance It is with the obvious advantage.
Wherein, 1-1 of the present invention described in Fig. 2 ~ Fig. 6 is first time measurement data of the invention, and 1-2 of the present invention is of the invention Second of measurement data;The home brands 1-1 is a kind of common home brands first time measurement data on the market, the country Brand 1-2 second of measurement data of brand thus;The foreign brand name 2-1 is the first time of another common foreign brand name to measure number According to second of measurement data of, foreign brand name 2-2 brand thus.
Specific embodiment
This programme is described in detail with attached drawing combined with specific embodiments below.
Embodiment
A kind of recombiner condenser, the difference is that, the capacitor includes capacitor winding assembly 1, accommodates the electricity The anti-fluorine lid 3 for holding the shell 2 of winding assembly and being matched with the shell, the shell 2 and the capacitor winding assembly 1 formation Cavity, the anti-fluorine lid 3 seal the shell 2;
The capacitor winding assembly 1 includes capacitor core 101, positive leading-out piece 102 and cathode leading-out piece 103, the capacitor volume Core 101 is coaxial winding-structure, and the anode leading-out piece 102 is arranged with the cathode leading-out piece 103 in the capacitor core 101 Both ends, the cathode leading-out piece 103 are connect with the shell 2;
The anti-fluorine lid 3 include in inverted " t " positive pole piece 301, be divided into the positive pole piece two sides insulator 302 and with it is described The cover 303 of insulator connection, the anode leading-out piece 102 are connect with the positive pole piece 301, the material of the insulator 301 Including not silica containing glass or in not silica containing ceramics;Electrolyte in recombiner condenser electrolyte generally contains There is LiPF6, LiPF6It meets water and following reactions occurs:LiPF6+H2O=2HF+LiF+POF3, due to can not on the make accomplish completely Water-less environment, so there is free HF in electrolyte, and HF acid can be with the SiO in glass2It reacts:4HF+SiO2=2H2O +SiF4, because there is the presence of water inside product, cyclic chemical effect is formed, is existed so the water of even trace also results in glass It is corroded in lithium-ion electrolyte, the insulated terminal used in the present invention is using not silica containing glass or without titanium dioxide Silicon ceramic material is to play the role of anti-fluorine corrosion.
Preferably, described to contain the not glass of silica or its not silica containing ceramic coefficient of expansion and steel material It is similar, including silicate glass containing alpha -aluminum, silicon carbide ceramics or boron carbide ceramics.
Preferably, insulator 302 divides for anti-fluorine part 3022 and non-anti-fluorine part 3021, and the non-anti-fluorine part 3021 is by containing dioxy The simple glass of SiClx or the material of conventional ceramic are made, and the anti-fluorine part 3022 is by not silica containing glass or not Material containing ceramics is made, and the anti-fluorine part 3022 is directly contacted with the electrolyte inside, in this way solution fluorine-resistant material The high problem of price, reduces cost.
Preferably, the electrolyte 5 of the ingredient containing lithium hexafluoro phosphate is perfused in the recombiner condenser;Its electrolyte is specifically matched Fang Wei(Solvent component:DMC, EC, EMC, PC, DEC's is three kinds or more, content 80%~90%;Solute:LiPF6, content 5~ 15%;0.5~5% VC additive), the electrolyte prescription can be that it does not freeze at -40 DEG C, viscosity does not increase, from And guarantee use of the recombiner condenser in ultralow temperature.
The cover 303 is equipped with liquid injection hole 3031 and sealant beads 3032, and the shell 2 and institute is perfused in the electrolyte 5 In the cavity for stating the formation of capacitor winding assembly 1, the liquid injection hole 3031 is sealed with the sealant beads 3032, using sealant beads 3032 Direct machinery, which presses, after fluid injection can form metal with intermetallic close connection to reach sealing effect, rather than conventional Carry out welded seal after aperture liquid filling again in lid group, reduce the difficulty of processing and manufacturing cost of product.
Preferably, the positive leading-out piece 102 and positive 301 laser welding of pole piece, the cathode leading-out piece 103 and institute State 2 laser welding of shell, the anti-fluorine lid 3 and 2 laser welding of shell.
Preferably, it is provided with laser fusion welding pearl 4 between the anti-fluorine lid 3 and the shell 2, when laser welding, melts, into One step ensure that the leakproofness between anti-fluorine lid group and shell.
Preferably, the material of the shell 2, positive pole piece 301 and the sealant beads 3032 is stainless steel.
A kind of preparation method of above-mentioned recombiner condenser, the difference is that, include the following steps:
A:After preparing the material of insulator 302, cover 303 and positive pole piece 301 mold being fixed again, under inert gas protection High temperature sintering is carried out, cools down after sinter molding, is then processed by shot blasting that the anti-fluorine lid 3 is made;
B:The cathode leading-out piece 103 is spoted weld on the shell, vacuum drying is then carried out and removes moisture removal, it, will after dry The anode leading-out piece 102 is spoted weld in low moisture environments on the positive pole piece 301;
C:After the anti-fluorine lid 3 is pressed into the shell 2, it is sintered and is melted together with laser welder in low moisture environments, shape At semi-finished product;
D:The electrolyte 5 is injected into the semi-finished product in low moisture environments by liquid injection hole 3031, then with described close It seals pearl 3032 to seal, the recombiner condenser is made.
Preferably, inert gas described in step A is nitrogen, and the high temperature sintering temperature is 1400 DEG C or more;Described in step B Vacuum drying temperature is 80 DEG C ~ 90 DEG C, and drying time is 12 hours ~ 48 hours.
Preferably, step B, low moisture environments dew-point temperature described in C and step D is -40 DEG C, the injection rate of step D electrolyte For 1.0g ~ 1.4g, the sealant beads are pressed into the liquid injection hole with cylinder.
A kind of application of above-mentioned recombiner condenser, the difference is that, the use temperature range of the recombiner condenser It is -40 DEG C ~ 85 DEG C.Under the premise of insulator anti-fluorine materials'use, under the premise of anti-fluorine lid is not corroded by HF, using welding Technique just can guarantee the leakproofness of its recombiner condenser.
The utilization of examples detailed above is merely to illustrate the protection scope that the present invention is not intended to limit the present invention.In addition, reading After technology contents of the invention, those skilled in the art can make various changes, modification or modification, all this to the present invention A little equivalent forms also belong within the required protection scope limited of the application.

Claims (9)

1. a kind of recombiner condenser, the difference is that, the capacitor includes capacitor winding assembly, accommodates the capacitor volume Around the shell of component and the anti-fluorine lid matched with the shell, the shell and the capacitor winding assembly form cavity, institute Anti- fluorine lid is stated to seal the recombiner condenser;
The capacitor winding assembly includes capacitor core, positive leading-out piece and cathode leading-out piece, and the capacitor core is coaxial volume Around structure, the anode leading-out piece and the cathode leading-out piece are arranged at capacitor core both ends, the cathode leading-out piece with The cage connection;
The anti-fluorine lid include in inverted " t " positive pole piece, be divided into the positive pole piece two sides insulator and with the insulator The cover of connection, the anode leading-out piece are connect with the positive pole piece, and the material of the insulator includes not silica containing One or both of glass or not silica containing ceramics.
2. a kind of recombiner condenser according to claim 1, which is characterized in that be perfused in the recombiner condenser containing hexafluoro The electrolyte of lithium phosphate ingredient.
3. a kind of recombiner condenser according to claim 1, which is characterized in that the anode leading-out piece and the positive pole piece swash Photocoagulation, the cathode leading-out piece and the shell laser welding.
4. a kind of recombiner condenser according to claim 1, which is characterized in that be provided between the cover and the shell Laser fusion welding pearl.
5. a kind of recombiner condenser according to claim 1, which is characterized in that the shell, positive pole piece and the sealing The material of pearl is stainless steel.
6. a kind of any one of claim 1 ~ 5 preparation method of recombiner condenser, which is characterized in that include the following steps:
A:After the material for preparing insulator, cover and positive pole piece again mold fixation, carry out under inert gas protection High temperature sintering cools down after sinter molding, is then processed by shot blasting that the anti-fluorine lid is made;
B:The cathode leading-out piece is spoted weld on the shell, vacuum drying is then carried out and removes moisture removal, it, will be described after dry Positive leading-out piece is spoted weld in low moisture environments on the positive pole piece;
C:It after the anti-fluorine lid is pressed into the shell, is sintered and is melted together with laser welder in low moisture environments, formed Semi-finished product;
D:The electrolyte is injected into the semi-finished product in low moisture environments by liquid injection hole, it is then close with the sealant beads Envelope, is made the recombiner condenser.
7. a kind of recombiner condenser preparation method according to claim 6, which is characterized in that inert gas described in step A is Nitrogen, the high temperature sintering temperature are 1400 DEG C or more;Vacuum drying temperature described in step B is 80 DEG C ~ 90 DEG C, and drying time is 12 hours ~ 48 hours.
8. a kind of preparation method of recombiner condenser according to claim 6, which is characterized in that step B, described in C and step D Low moisture environments dew-point temperature is -40 DEG C, and the injection rate of step D electrolyte is 1.0g ~ 1.4g, and the sealant beads are pressed into institute with cylinder State liquid injection hole.
9. a kind of application of recombiner condenser of any one of claim 1 ~ 5, which is characterized in that the recombiner condenser makes It is -40 DEG C ~ 85 DEG C with temperature range.
CN201810457807.6A 2018-05-14 2018-05-14 A kind of recombiner condenser, preparation method and application Pending CN108899200A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114242451A (en) * 2021-11-24 2022-03-25 安徽铜峰电子股份有限公司 Capacitor electrode assembly structure and capacitor electrode assembly method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101531473A (en) * 2009-04-03 2009-09-16 西安华泰有色金属实业有限责任公司 Metal-glass sealing process
CN201397827Y (en) * 2009-04-03 2010-02-03 西安华泰有色金属实业有限责任公司 Sealing insulator for lithium batteries
CN103022388A (en) * 2011-09-26 2013-04-03 比亚迪股份有限公司 Battery seal assembly, manufacturing method thereof and lithium-ion battery
CN205845713U (en) * 2016-07-06 2016-12-28 株洲日望电子科技股份有限公司 A kind of insulator and high-energy tantalum mixed capacitor
CN106531447A (en) * 2016-12-30 2017-03-22 惠州亿纬锂能股份有限公司 Square battery capacitor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101531473A (en) * 2009-04-03 2009-09-16 西安华泰有色金属实业有限责任公司 Metal-glass sealing process
CN201397827Y (en) * 2009-04-03 2010-02-03 西安华泰有色金属实业有限责任公司 Sealing insulator for lithium batteries
CN103022388A (en) * 2011-09-26 2013-04-03 比亚迪股份有限公司 Battery seal assembly, manufacturing method thereof and lithium-ion battery
CN205845713U (en) * 2016-07-06 2016-12-28 株洲日望电子科技股份有限公司 A kind of insulator and high-energy tantalum mixed capacitor
CN106531447A (en) * 2016-12-30 2017-03-22 惠州亿纬锂能股份有限公司 Square battery capacitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114242451A (en) * 2021-11-24 2022-03-25 安徽铜峰电子股份有限公司 Capacitor electrode assembly structure and capacitor electrode assembly method
CN114242451B (en) * 2021-11-24 2024-06-11 安徽铜峰电子股份有限公司 Capacitor electrode assembly structure and capacitor electrode assembly method

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Application publication date: 20181127