WO2015106693A1 - 一种铝电解电容器 - Google Patents
一种铝电解电容器 Download PDFInfo
- Publication number
- WO2015106693A1 WO2015106693A1 PCT/CN2015/070761 CN2015070761W WO2015106693A1 WO 2015106693 A1 WO2015106693 A1 WO 2015106693A1 CN 2015070761 W CN2015070761 W CN 2015070761W WO 2015106693 A1 WO2015106693 A1 WO 2015106693A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- explosion
- electrolytic capacitor
- proof gasket
- core package
- package
- Prior art date
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000003990 capacitor Substances 0.000 title claims abstract description 39
- 239000004411 aluminium Substances 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000013461 design Methods 0.000 claims abstract description 8
- 238000004880 explosion Methods 0.000 claims abstract description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000010892 electric spark Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract 5
- 239000005030 aluminium foil Substances 0.000 abstract 1
- 239000012634 fragment Substances 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 239000011888 foil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
- H01G9/08—Housing; Encapsulation
- H01G9/12—Vents or other means allowing expansion
Definitions
- the invention belongs to the technical field of aluminum electrolytic capacitors, and particularly relates to an aluminum electrolytic capacitor with explosion-proof function and safety.
- the package of wet aluminum electrolytic capacitor is made by sealing and sealing the explosion-proof aluminum shell and the sealing rubber rubber.
- the internal vapor pressure release is completed by the two pressure relief valves (such as aluminum film or rubber film).
- the utility model has the automatic release pressure of the internal vapor pressure peak (threshold value), and the self-operated pressure relief valve can effectively meet the safety requirements of the electronic circuit under the normal working condition. However, it is incapable of preventing the failure of the capacitor bomber combustion.
- the purpose of the present embodiment is to provide an aluminum electrolytic capacitor that is safe, reliable, explosion-proof, and has a long service life.
- An aluminum electrolytic capacitor comprising a core package having a polarity lead wire, a polarity lead wire lead pin drawn from the core package, and a package metal case encasing the core package; wherein the bottom of the package metal case is sandwiched and packaged An anti-riot gasket is arranged between the bottom of the metal casing and the bottom of the core package, and an air passage is formed between the explosion-proof gasket and the bottom of the core package and the metal packaging casing.
- the impact of the explosion-proof gasket corresponding to the core package is matched with the core package, and the center of the explosion-proof gasket is provided with a small hole to fit the round hole of the core package; the explosion-proof gasket is provided with a concave Slots and protrusions.
- grooves and protrusions are disposed on one or both sides of the explosion-proof gasket.
- the double-sided staggered surface of the explosion-proof gasket is provided with the groove and the protrusion, wherein the groove on one side of the explosion-proof gasket forms the protrusion at a corresponding position on the other surface.
- the explosion-proof gasket is provided with a mesh, and the plurality of meshes are plural.
- the package metal casing is an aluminum casing; and the riot gasket is made of special high-purity aluminum.
- the core package has a circular design
- the explosion-proof gasket has a circular shape corresponding to the core package.
- An aluminum electrolytic capacitor comprising a core package having a polarity lead wire, a polarity lead wire lead pin drawn from the core package, and a package metal case encasing the core package; wherein the bottom of the package metal case is sandwiched and packaged An anti-riot gasket is arranged between the bottom of the metal casing and the bottom of the core package, and an air passage is formed between the explosion-proof gasket and the bottom of the core package and the metal packaging casing.
- the explosion-proof gasket is arranged in a shape corresponding to the core package, and the center of the explosion-proof gasket is provided with a small hole to fit the round hole of the core package.
- the explosion-proof gasket is provided with a groove and a protrusion.
- grooves and protrusions are disposed on one or both sides of the explosion-proof gasket.
- the double-sided staggered surface of the explosion-proof gasket is provided with the groove and the protrusion, wherein the groove on one side of the explosion-proof gasket forms the protrusion at a corresponding position on the other surface.
- the package metal casing is an aluminum casing; and the riot gasket is made of special high-purity aluminum.
- the core package has a circular design, and the explosion-proof gasket has a circular shape corresponding to the core package.
- the explosion-proof pad of the aluminum electrolytic capacitor is changed by adding the explosion-proof gasket to the bottom layer of the package metal casing, and the previous point is the bursting straight path to the "Z" path.
- the impact of the explosive debris is changed to the friction of the aluminum gasket and the side wall of the package aluminum shell, effectively weakening the impact kinetic energy, effectively filtering the aluminum foil and the separation paper, and finally releasing the pressure-removing only steam gas. It does not cause the sparks to be ejected, which is safe and reliable.
- FIG. 1 is a structural diagram of an aluminum electrolytic capacitor in which an explosion-proof gasket is not mounted;
- Figure 2 is a mechanism diagram of an explosion-proof gasket
- Fig. 3 is a structural diagram of an aluminum electrolytic capacitor in which an explosion-proof gasket is mounted.
- installation shall be understood broadly, and may be fixedly connected, integrally connected, unless otherwise specifically defined and defined. It can also be a detachable connection; it can be the internal connection of the two components; it can be directly connected or indirectly connected through an intermediate medium, and those skilled in the art can understand the above terms in the creation of the present invention. The specific meaning.
- the present aluminum electrolytic capacitor 100 includes a core package 20 having a polarity lead wire, a polarity lead wire guide pin 50 drawn from the core package 20, and a package metal case 10 encasing the core package 20.
- the bottom of the package metal casing 10 is provided with a sandwich design, and a riot shield 200 is disposed between the bottom of the package metal casing 10 and the bottom of the core package 20.
- the tamper-proof gasket 200 can be made of any material, such as plastic, resin, metal, and electrical insulating materials.
- the explosion-proof gasket 200 is disposed in a shape matching the core package 20 to match the core package 20.
- the center of the explosion-proof gasket 200 is provided with a small hole 203 to conform to the core hole (not shown) of the core package 20. Match.
- the explosion-proof gasket 200 is assembled to the bottom of the core package 20, an air passage is formed between the explosion-proof gasket 200 and the bottom of the core package 20 and the metal package casing 10.
- the explosion-proof gasket 200 is provided with a groove 202 and a protrusion 201.
- the groove 202 and the protrusion 201 are disposed on one or both sides of the explosion-proof gasket 200, and one side of the explosion-proof gasket 200
- the upper groove 202 forms the protrusion 201 at a corresponding position on the other side.
- the groove 202 is a straight strip, or a curved strip, a turbine, an impeller, or any other geometric planar shape.
- the two sides of the explosion-proof gasket 200 are alternately provided with the groove 202 and the protrusion 201, and the grooves of one side are three, and correspondingly, the protrusions correspond to three.
- the groove is installed in a straight strip to change the explosion impact path of the aluminum electrolytic capacitor, and the previous point is the bursting straight path to the "Z" type path, so that the impact of the explosive debris is changed to the explosion-proof gasket and
- the friction of the side wall of the package metal shell effectively weakens the impact kinetic energy, and can effectively filter the aluminum foil and the separation paper, and finally can safely release only the steam gas for releasing the pressure, and does not cause the electric spark to be ejected.
- the explosion-proof gasket is provided with a mesh, specifically a mesh structure of one or more holes.
- the package metal casing is an aluminum casing; and the riot gasket is made of special high-purity aluminum.
- the core package 20 has a circular design and includes a positive aluminum foil, electrolytic paper disposed on both sides of the positive aluminum foil, a negative aluminum foil, an electrolytic solution, and an electronic tape (not shown).
- the negative aluminum foil is disposed on the outermost layer of the core package 20, and is close to or in contact with the metal outer casing surrounding the core package 20.
- the explosion-proof gasket has a circular design corresponding to the core package.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Pile Receivers (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
本创作公开一种铝电解电容器，包括具有极性引出线的芯包、自芯包引出的极性引出线导针、包裹住芯包的封装金属外壳；其中，所述封装金属外壳底部采用夹层设计，封装金属外壳底部与芯包底部之间设置有防暴垫片，防爆垫片与芯包底部以及金属封装外壳之间形成有气道，铝电解电容器发生爆炸时，气流通过气道缓冲，从降低爆炸发生的冲击，并且有效过滤铝箔与隔离纸碎末，最终能安全的释放泄压的只有蒸汽气体，没有引起电火花碎末喷出，安全可靠。
Description
【技术领域】
本发明属于铝电解电容器技术领域，尤其涉及一种具有防爆功能、安全的铝电解电容器。
【背景技术】
湿式铝电解电容的封装是由防爆铝壳与密封橡胶胶粒压合密封而成，内部蒸汽压释放则是由该两者自带泄压阀（如：铝膜或橡胶膜）完成，该两者具有内部蒸汽压峰值（阀值）自动释放能力，自带泄压阀工作常态下可以有效的达到电子线路安全要求。但是对于防止电容器炸机燃烧等故障无能为力，通过统计国内外铝电解电容器产品故障案例发现，多数炸机产品的同一特征为电容器内部电芯结构组织被炸碎冲出，造成线路板大面积短路，电容器越大，电路板受害面积越大，甚至有起火烧机等恶劣事故，对于贵重电器或者消防安全高级别的场所，目前所有铝电解电容器都存在有此类隐患。
故，针对上述现有技术存在的缺陷，有必进行开发研究，以提出一种技术方案，以解决此问题，提供安全可靠、防爆的铝电解电容器。
【发明内容】
本创作实施例的目的在于提供一种安全可靠、防爆、使用寿命长的铝电解电容器。
本发明实施例是这样实现的：
一种铝电解电容器，包括具有极性引出线的芯包、自芯包引出的极性引出线导针、包裹住芯包的封装金属外壳；其中，所述封装金属外壳底部采用夹层设计，封装金属外壳底部与芯包底部之间设置有防暴垫片，防爆垫片与芯包底部以及金属封装外壳之间形成有气道，铝电解电容器发生爆炸时，气流通过气道缓冲，从降低爆炸发生的冲击；所述防爆垫片对应芯包设置成与芯包相匹配的形状，防爆垫片的中心设置有小孔，以与芯包的卷心圆孔相适配；所述防爆垫片设置有凹槽和突起。
进一步地，所述凹槽和突起设置于防爆垫片的一面或者两面。
进一步地，所述防爆垫片的双面交错设置有所述凹槽和突起，其中，防爆垫片一面上的凹槽于另一面的对应位置处形成所述突起。
进一步地，所述防爆垫片上设置有网孔，所述网孔为复数个。
进一步地，所述封装金属外壳为铝壳；所述防暴垫片为特型高纯铝制成。
进一步地，所述芯包呈圆形设计，所述防爆垫片对应芯包呈圆形。
本发明还提供另一实施例：
一种铝电解电容器，包括具有极性引出线的芯包、自芯包引出的极性引出线导针、包裹住芯包的封装金属外壳；其中，所述封装金属外壳底部采用夹层设计，封装金属外壳底部与芯包底部之间设置有防暴垫片，防爆垫片与芯包底部以及金属封装外壳之间形成有气道，铝电解电容器发生爆炸时，气流通过气道缓冲，从降低爆炸发生的冲击。
进一步地，所述防爆垫片对应芯包设置成与芯包相匹配的形状，防爆垫片的中心设置有小孔，以与芯包的卷心圆孔相适配。
进一步地，所述防爆垫片设置有凹槽和突起。
进一步地，所述凹槽和突起设置于防爆垫片的一面或者两面。
进一步地，所述防爆垫片的双面交错设置有所述凹槽和突起，其中，防爆垫片一面上的凹槽于另一面的对应位置处形成所述突起。
进一步地，所述封装金属外壳为铝壳；所述防暴垫片为特型高纯铝制成。进一步地，所述芯包呈圆形设计，所述防爆垫片对应芯包呈圆形。
在本发明创作的实施例中，通过对封装金属外壳底部夹层设计，加装防爆垫片，改变铝电解电容器的爆炸冲击路线，由以前的以点为爆发直冲路径改变为“Z”型路径，使爆炸碎末的冲击改变为对铝制垫片和封装铝壳侧壁的磨擦，有效的弱化了冲击动能，有效过滤铝箔与隔离纸碎末，最终能安全的释放泄压的只有蒸汽气体，没有引起电火花碎末喷出，安全可靠。
【附图说明】
图1是未安装防爆垫片的铝电解电容器的结构图示；
图2是防爆垫片的机构图示；
图3是安装有防爆垫片的铝电解电容器的结构图示。
【具体实施方式】
为了使本创作的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本创作进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
在本发明创作的描述中，需要理解的是，术语
“上”、“下”、“前”、“后”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明创作和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明创作的限制。
在本发明创作的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，一体地连接，也可以是可拆卸连接；可以是两个部件内部的连通；可以是直接相连，也可以通过中间媒介间接相连，对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明创作中的具体含义。
参照图1-3所示，本创作铝电解电容器100包括具有极性引出线的芯包20、自芯包20引出的极性引出线导针50、包裹住芯包20的封装金属外壳10，所述封装金属外壳10底部采用夹层设计，封装金属外壳10底部与芯包20底部之间设置有防暴垫片200。所述防暴垫片200可以为任意材质制成，如：塑料、树脂、金属以及电工绝缘材料等。所述防爆垫片200对应芯包20设置成与芯包20相匹配的形状，防爆垫片200的中心设置有小孔203，以与芯包20的卷心圆孔（未图示）相适配。当防爆垫片200组装到芯包20底部后，防爆垫片200与芯包20底部以及金属封装外壳10之间形成有气道，铝电解电容器发生爆炸时，气流通过气道缓冲，从而以大大减弱爆炸发生的冲击。本发明实施例中，所述防爆垫片200设置有凹槽202和突起201，具体地，所述凹槽202和突起201设置于防爆垫片200的一面或者两面，所述防爆垫片200一面上的凹槽202于另一面的对应位置处形成所述突起201。
所述凹槽202为直条状，或弧形条，涡轮状，叶轮状，或其他任意几何平面形状。本发明实施例中，防爆垫片200的双面交错设置有凹槽202和突起201，单面的凹槽为三个，相应地，突起对应为三个。所述凹槽成直条装，从而改变铝电解电容器的爆炸冲击路线，由以前的以点为爆发直冲路径改变为“Z”型路径，使爆炸碎末的冲击改变为对防爆垫片和封装金属外壳侧壁的磨擦，有效的弱化了冲击动能，并且，可有效过滤铝箔与隔离纸碎末，最终能安全的释放泄压的只有蒸汽气体，没有引起电火花碎末喷出。
本发明另一实施例中，所述防爆垫片上设置有网孔，具体为一个或一个孔以上的网孔结构。
在本发明实施例中，所述封装金属外壳为铝壳；所述防暴垫片为特型高纯铝制成。所述芯包20呈圆形设计，其包括有正极性铝箔、设置于正极性铝箔两侧的电解纸、负极性铝箔、电解液以及电子胶带（未图示）。负极性铝箔设置于芯包20的最外层，近距或接触包裹芯包20的金属外壳。所述防爆垫片对应芯包呈圆形设计。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
Claims (14)
- 一种铝电解电容器，包括具有极性引出线的芯包、自芯包引出的极性引出线导针、包裹住芯包的封装金属外壳，其中：所述封装金属外壳底部采用夹层设计，封装金属外壳底部与芯包底部之间设置有防暴垫片，防爆垫片与芯包底部以及金属封装外壳之间形成有气道，铝电解电容器发生爆炸时，气流通过气道缓冲，从降低爆炸发生的冲击；所述防爆垫片对应芯包设置成与芯包相匹配的形状，防爆垫片的中心设置有小孔，以与芯包的卷心圆孔相适配；所述防爆垫片设置有凹槽和突起。
- 如权利要求1所述的铝电解电容器，其中：所述凹槽和突起设置于防爆垫片的一面或者两面。
- 如权利要求1所述的铝电解电容器，其中：所述防爆垫片的双面交错设置有所述凹槽和突起，其中，防爆垫片一面上的凹槽于另一面的对应位置处形成所述突起。
- 如权利要求1所述的铝电解电容器，其中：所述防爆垫片上设置有网孔，所述网孔为复数个。
- 如权利要求3所述的铝电解电容器，其中：所述封装金属外壳为铝壳；所述防暴垫片为特型高纯铝制成。
- 如权利要求5所述的铝电解电容器，其中：所述芯包呈圆形设计，所述防爆垫片对应芯包呈圆形。
- 一种铝电解电容器，包括具有极性引出线的芯包、自芯包引出的极性引出线导针、包裹住芯包的封装金属外壳，其中：所述封装金属外壳底部采用夹层设计，封装金属外壳底部与芯包底部之间设置有防暴垫片，防爆垫片与芯包底部以及金属封装外壳之间形成有气道，铝电解电容器发生爆炸时，气流通过气道缓冲，从降低爆炸发生的冲击。
- 如权利要求7所述的铝电解电容器，其中：所述防爆垫片对应芯包设置成与芯包相匹配的形状，防爆垫片的中心设置有小孔，以与芯包的卷心圆孔相适配。
- 如权利要求7所述的铝电解电容器，其中：所述防爆垫片设置有凹槽和突起。
- 如权利要求9所述的铝电解电容器，其中：所述凹槽和突起设置于防爆垫片的一面或者两面。
- 如权利要求9所述的铝电解电容器，其中：所述防爆垫片的双面交错设置有所述凹槽和突起，其中，防爆垫片一面上的凹槽于另一面的对应位置处形成所述突起。
- 如权利要求7所述的铝电解电容器，其中：所述防爆垫片上设置有网孔，所述网孔为复数个。
- 如权利要求11所述的铝电解电容器，其中：所述封装金属外壳为铝壳；所述防暴垫片为特型高纯铝制成。
- 如权利要求13所述的铝电解电容器，其中：所述芯包呈圆形设计，所述防爆垫片对应芯包呈圆形。
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| CN101013631A (zh) * | 2006-11-08 | 2007-08-08 | 深圳清华大学研究院 | 一种防止电容芯子变形的方法及铝电解电容器 |
| CN201440429U (zh) * | 2009-07-27 | 2010-04-21 | 温州市宏艺锂电池配件有限公司 | 防爆片和铝盖板 |
| CN202363264U (zh) * | 2011-11-21 | 2012-08-01 | 南通新联电子有限公司 | 一种电解电容器用的防爆铝壳 |
| CN103794375A (zh) * | 2014-01-16 | 2014-05-14 | 深圳江浩电子有限公司 | 一种铝电解电容器 |
| CN203659641U (zh) * | 2014-01-16 | 2014-06-18 | 深圳江浩电子有限公司 | 一种铝电解电容器 |
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| CN201638691U (zh) * | 2009-12-24 | 2010-11-17 | 张云锋 | 一种电解电容器的防爆阻燃结构 |
| CN202230884U (zh) * | 2011-09-14 | 2012-05-23 | 深圳江浩电子有限公司 | 一种铝电解电容器 |
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| CN201440429U (zh) * | 2009-07-27 | 2010-04-21 | 温州市宏艺锂电池配件有限公司 | 防爆片和铝盖板 |
| CN202363264U (zh) * | 2011-11-21 | 2012-08-01 | 南通新联电子有限公司 | 一种电解电容器用的防爆铝壳 |
| CN103794375A (zh) * | 2014-01-16 | 2014-05-14 | 深圳江浩电子有限公司 | 一种铝电解电容器 |
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