CN111937286A - Llc谐振转换器 - Google Patents

Llc谐振转换器 Download PDF

Info

Publication number
CN111937286A
CN111937286A CN201980021773.9A CN201980021773A CN111937286A CN 111937286 A CN111937286 A CN 111937286A CN 201980021773 A CN201980021773 A CN 201980021773A CN 111937286 A CN111937286 A CN 111937286A
Authority
CN
China
Prior art keywords
llc resonant
resonant converter
resin
capacitor
inductor
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.)
Granted
Application number
CN201980021773.9A
Other languages
English (en)
Other versions
CN111937286B (zh
Inventor
木村真也
别所寿彦
小南智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Automotive Electronic Systems Co ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of CN111937286A publication Critical patent/CN111937286A/zh
Application granted granted Critical
Publication of CN111937286B publication Critical patent/CN111937286B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/122—Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/01—Resonant DC/DC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33573—Full-bridge at primary side of an isolation transformer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

本发明的LLC谐振转换器(100)中，利用树脂(200)，将构成串联谐振部的电容器(Cr)、电感(Lr)、以及电容器(Cr)与电感(Lr)之间的电力线(引出线160)树脂封装。由此，由于将作为高电压部分的串联谐振部一并树脂封装，因此，即使在高电压化、高频化的情况下，也能够缩短绝缘距离，能够抑制大型化。

Description

LLC谐振转换器
技术领域
本发明例如涉及车载充电器中使用的LLC谐振转换器。
背景技术
以往，作为在电动汽车(EV：electric vehicle)或插电式混合动力汽车(PHV：plug-in hybrid vehicle)等中搭载的充电器，已知有具备进行电力转换的LLC谐振转换器的结构。典型的LLC谐振转换器具备：具有一次绕组和二次绕组的变压器、与变压器的一次侧连接的谐振电容器、对向变压器和谐振电容器的通电进行控制的开关电路、以及与变压器的二次侧连接的整流电路等。
LLC谐振转换器通过减小变压器的耦合系数而积极地使漏电感产生，从而将其作为谐振用电感来利用。也就是说，LLC谐振转换器具有由变压器的漏电感和谐振电容器构成的谐振电路。
关于LLC谐振转换器，例如在专利文献1、2等中被公开。
现有技术文献
专利文献
专利文献1：日本特开2017-77078号公报
专利文献2：国际公开第2017/022477号
发明内容
发明要解决的问题
在LLC谐振转换器构成为包括由电容器和阻抗构成的串联谐振部的情况下，在串联谐振部(LC串联谐振部)产生较大的电压。
另一方面，为了使LLC谐振转换器小型化，期望提高谐振频率(驱动频率)。
根据这样的情况，可设想串联谐振部(LC串联谐振部)要承受高电压和高频率。
在此，基于在IEC60664-4(日本工业标准JIS C 60664-4)中规定的绝缘距离(爬电距离)，电压越高，所需要的绝缘距离越长，且频率越高，所需要的绝缘距离越长。其结果，LLC谐振转换器的高电压化、高频化导致LLC谐振转换器的大型化。
本发明是鉴于以上问题而完成的，其提供即使在高电压化、高频化的情况下也能够抑制大型化的LLC谐振转换器。
解决问题的方案
本发明的LLC谐振转换器的一个形态，是至少包含串联谐振部的LLC谐振转换器，
构成所述串联谐振部的电容器、电感、以及所述电容器与所述电感之间的电力线被树脂封装。
发明效果
根据本发明，可以实现即使在高电压化、高频化的情况下也能够抑制大型化的LLC谐振转换器。
附图说明
图1是包含实施方式的LLC谐振转换器的电路图。
图2是从上部斜向观察封装后的LLC谐振转换器的立体图。
图3是在图2中去掉壳体后的立体图。
图4是图2的A-A’剖面图。
图5是表示将LLC谐振转换器作为升压型的DC-DC转换器(直流-直流转换器)使用的结构例的电路图。
具体实施方式
下面，参照附图对本发明的实施方式进行说明。
图1是包含本发明的一个实施方式的LLC谐振转换器100的电路图。图1的例子是将本实施方式的LLC谐振转换器100使用于车载充电器的例子。
在图1中，LLC谐振转换器100经由AC/DC转换器(交流/直流转换器)2与外部电源1连接。外部电源1例如是供给60Hz、200V的单相交流电力的商用电源，对AC/DC转换器2的输入侧供给交流电力。
AC/DC转换器2将从外部电源1输入的交流电力转换为直流电力，并向LLC谐振转换器100供给。AC/DC转换器2例如具有整流电路和平滑化电容器。此外，AC/DC转换器2也可以在输出侧还设置有功率因数改善电路等。AC/DC转换器2例如将从外部电源1输入的200V的单相交流电力转换为400V的直流电力。
LLC谐振转换器100在将外部电源1与电池3绝缘的同时，向电池3供给通过AC/DC转换器2得到的直流电力。
LLC谐振转换器100具有逆变器101，逆变器101利用从AC/DC转换器2输入的直流电力，形成具有规定的驱动频率的送电电力，并将其输出至第一节点N1和第二节点N2。
并且，LLC谐振转换器100具有变压器(换言之，送电线圈)T1、T2、电容器(换言之，电容元件)Cr和电感(换言之，电感元件)Lr。在第一节点N1与第二节点N2之间，电连接有变压器的一次绕组T1。另外，在第一节点N1与一次绕组T1之间，串联连接有电容器Cr和电感Lr。从而，由电容器Cr和电感Lr构成串联谐振部。
在设置于变压器的二次绕组T2的两端的第三节点N3和第四节点N4，连接有整流电路102，经由整流电路102连接有作为充电对象的电池3。
根据该结构，LLC谐振转换器100能够在将外部电源1与电池3绝缘的同时，向电池3供给通过AC/DC转换器2得到的直流电力。此外，在LLC谐振转换器100从AC/DC转换器2输入400V的直流电力的情况下，LLC谐振转换器100的串联谐振部例如以驱动频率0.35MHz、峰值电压2000V工作。
关于逆变器101和整流电路102，可以使用已知的结构，因此在此简单地进行说明。逆变器101由多个开关元件构成，将与开关元件的开关相应的频率的驱动电力作为向LLC谐振转换器100送电的送电电力输出。整流电路102由多个整流元件、平滑电容器等构成。
图2～图4是表示本实施方式的LLC谐振转换器100的封装结构的图。图2是从上部斜向观察封装后的LLC谐振转换器100的立体图。图3是在图2中去掉壳体110后的立体图。图4是表示图2的A-A’剖面的剖面图。
LLC谐振转换器100构成为，在壳体110内容纳一次绕组T1、二次绕组T2、绕线管120、上部磁芯131、下部磁芯132、印刷电路板140和隔板150等。
壳体110由金属形成。此外，壳体110例如也可以由树脂形成，但是，通过由金属形成，散热性提高，由此，从小型化的观点来看也是有利的。
绕线管120例如由具有绝缘性的合成树脂材料形成。绕线管120具有卷绕一次绕组T1和二次绕组T2的绕组部(省略附图标记)。根据图4可知，绕线管120例如在下侧具有卷绕一次绕组T1的第一绕组部(省略附图标记)，在上侧具有卷绕二次绕组T2的第二绕组部(省略附图标记)。第一绕组部与第二绕组部被隔板150分离。一次绕组T1和二次绕组T2以被隔板150绝缘的状态卷绕于绕线管120的绕组部。此外，在图4的例子中，隔板150以介于从一次绕组T1和二次绕组T2引出的引出线161、162之间的方式，从绕线管120的内部向外部延伸，由此，引出线161、162之间也被绝缘。
上部磁芯131和下部磁芯132例如是由铁氧体等磁性材料形成的EE型磁芯。上部磁芯131和下部磁芯132组装于卷绕有一次绕组T1和二次绕组T2的绕线管120，在向一次绕组T1和二次绕组T2通电时形成磁路。
从一次绕组T1引出的引出线161和从二次绕组T2引出的引出线162与印刷电路板140电连接，该印刷电路板140以在变压器部分的上侧层叠于变压器部分之上的方式配置。在此，实际上，一次绕组T1的引出线161和二次绕组T2的引出线162各有两根，从而共计四根引出线160(图3)与印刷电路板140的布线图案电连接。
引出线160通过印刷电路板140的布线以以下方式连接。一次绕组T1的两根引出线161中的一根经由电容器Cr与第一节点N1连接，另一根与第二节点N2连接。二次绕组T2的2根引出线162中的一根与第三节点N3连接，另一根与第四节点N4连接。
此外，在本实施方式中，电容器Cr通过串联连接多个电容器而构成。作为电容器例如使用陶瓷电容器(ceramic condenser)。
除了这样的结构以外，本实施方式的LLC谐振转换器100还如图4所示，在壳体110内填充有热固化性的树脂200。当在壳体110内配置上述的部件后，使树脂200流入到壳体110内。
由此，构成串联谐振部的电容器Cr、电感Lr(本实施方式中，一次绕组T1兼作电感Lr)、以及电容器Cr与电感Lr之间的电力线(引出线160)被树脂封装。
此外，本实施方式中，使一次绕组(变压器)T1具有与电感Lr的作用相当的作用。也就是说，一次绕组(变压器)T1与电感Lr一体形成。由此，与分体地构成电感Lr和变压器的情况相比能够实现小型化。当然，电感Lr也可以与一次绕组(变压器)T1分体地构成。在将电感Lr与一次绕组(变压器)T1分体地构成的情况下，一次绕组(变压器)T1被排除在高电压部分之外，因此也可以不将一次绕组(变压器)T1树脂封装。但是，也可以从树脂封装的工序的容易度的观点出发，将变压器树脂封装。
作为进行封装的树脂200，使用绝缘性较高的树脂。进而，作为树脂200，优选使用耐电压较高的树脂。进而，优选使用导热性较高的树脂。进而，为了防止热固化时的上部磁芯131、下部磁芯132和电容器Cr的破损，优选使用热固化时的收缩较小的树脂。作为树脂200，例如可以使用包括硅树脂、环氧树脂、聚氨酯树脂等的树脂。
在此，若使LLC谐振转换器100工作，则尤其是图1中示出的串联谐振部会成为高电压状态。因此，需要将绝缘距离设为较长。例如，一次绕组T1的引出线161中的与电容器Cr连接的一方的引出线161处的电位成为高电位，因此，需要将该引出线161与壳体110之间、该引出线161与其他引出线之间、以及该引出线161与磁芯131、132之间等的绝缘距离设为较长。另外，由于电容器Cr成为高电压状态，因此需要将配置于电容器Cr的上方的壳体110的上盖(未图示)与电容器Cr之间的绝缘距离设为较长。另外，需要将一次绕组T1与磁芯131之间的绝缘距离设为较长。若提高了LLC谐振转换器100的驱动频率，则有必要进一步加长上述绝缘距离。
本实施方式中，会成为高电压状态的电容器Cr、电感Lr(本实施方式中，为一次绕组T1)、以及电容器Cr与电感Lr之间的电力线(引出线160)被树脂封装，因此能够做到即使是在以高电压、高频率使其工作的情况下，所需的绝缘距离也较短。具体地，能够将如下的绝缘距离，即，会成为高电压状态的引出线161与壳体110之间、会成为高电压状态的引出线161与其他引出线之间、会成为高电压状态的引出线161与磁芯131、132之间、以及电容器Cr与壳体110的上盖之间的绝缘距离，设为较短。其结果，即使在使LLC谐振转换器高电压化、高频化的情况下，也能够抑制大型化。
如以上说明的那样，根据本实施方式，通过将构成串联谐振部的电容器Cr、电感Lr(本实施方式中，一次绕组T1兼作电感Lr)、以及电容器Cr与电感Lr之间的电力线(引出线160)树脂封装，从而即使在高电压化、高频化的情况下，也能够抑制LLC谐振转换器的大型化。
上述的实施方式不过是示出了实施本发明时的具体化的一例，本发明的技术范围不被其限定性地解释。即，在不脱离本发明的主旨、或其主要特征的范围内，能够以各种各样的形式实施本发明。
上述的实施方式中，示出了将构成电容器Cr的多个电容器全部树脂封装的情况，但是，也可以只将多个电容器中的会成为高电压状态的一部分的电容器树脂封装，而不将其他电容器树脂封装。同样地，在上述的实施方式中，示出了将所有的引出线(电力线)160树脂封装的情况，但是，也可以只将会成为高电压状态的一部分的引出线(电力线)160树脂封装，而不将其他引出线(电力线)160树脂封装。
上述的实施方式中，以将本发明的LLC谐振转换器用于车载充电器的情况为例进行了说明，但是，也可以将本发明的LLC谐振转换器用于车载充电器以外的用途。例如，如图5所示，本发明的LLC谐振转换器也可以作为设置于电池10与负载30之间的将电池10的电压升压后向负载30供给的升压型的DC-DC转换器来使用。具体说明的话，图5的LLC谐振转换器100输入电池10的电力，并将其升压后输出。例如，200V左右的电池10的电压被LLC谐振转换器100升压为500V左右的电压。被LLC谐振转换器100升压后的电力向电机等负载30供给。同样地，本发明的LLC谐振转换器也可以作为降圧型的DC-DC转换器使用。
在2018年3月28日提出的日本专利申请特愿2018-061917中包含的说明书、附图及摘要的公开内容全部引用于本申请。
工业实用性
本发明的LLC谐振转换器具有即使在高电压化、高频化的情况下也能够抑制大型化的效果，能够适宜地用于各种DC-DC转换器。
附图标记说明
1 外部电源
2AC/DC 转换器(交流/直流转换器)
3、10 电池
30 负载
100 LLC谐振转换器
101 逆变器
102 整流电路
110 壳体
120 绕线管
131 上部磁芯
132 下部磁芯
140 印刷电路板
150 隔板
160、161、162 引出线(电力线)
200 树脂
Cr 电容器
Lr 电感
N1～N4 节点
T1 一次绕组(送电线圈)
T2 二次绕组

Claims (5)

1.一种LLC谐振转换器，其至少包含串联谐振部，所述LLC谐振转换器的特征在于，
构成所述串联谐振部的电容器、电感、以及所述电容器与所述电感之间的电力线被树脂封装。
2.如权利要求1所述的LLC谐振转换器，其中，
所述LLC谐振转换器具备电连接于逆变器的第一节点与第二节点之间的送电线圈，所述逆变器将具有规定的驱动频率的送电电力输出至所述第一节点与所述第二节点之间，
构成所述串联谐振部的所述电容器和所述电感串联连接于所述第一节点与所述送电线圈之间。
3.如权利要求2所述的LLC谐振转换器，其中，
所述送电线圈与所述电感一体形成，
一体形成的所述送电线圈和所述电感被树脂封装。
4.如权利要求2所述的LLC谐振转换器，其中，
所述LLC谐振转换器还具备容纳所述串联谐振部和所述送电线圈的壳体，
通过在所述壳体内填充树脂，将所述串联谐振部和所述送电线圈一并树脂封装。
5.如权利要求3所述的LLC谐振转换器，其中，
在上表面开口的壳体中容纳有一体形成的所述送电线圈和所述电感，
通过在所述电容器层叠于所述一体形成的所述送电线圈和所述电感的上侧的状态下，在所述壳体内填充树脂，从而将所述串联谐振部和所述送电线圈一并树脂封装。
CN201980021773.9A 2018-03-28 2019-03-25 Llc谐振转换器 Active CN111937286B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018-061917 2018-03-28
JP2018061917A JP6975902B2 (ja) 2018-03-28 2018-03-28 Ｌｌｃ共振コンバーター
PCT/JP2019/012575 WO2019189018A1 (ja) 2018-03-28 2019-03-25 Ｌｌｃ共振コンバーター

Publications (2)

Publication Number Publication Date
CN111937286A true CN111937286A (zh) 2020-11-13
CN111937286B CN111937286B (zh) 2024-05-14

Family

ID=68058315

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980021773.9A Active CN111937286B (zh) 2018-03-28 2019-03-25 Llc谐振转换器

Country Status (5)

Country Link
US (1) US11336184B2 (zh)
JP (1) JP6975902B2 (zh)
CN (1) CN111937286B (zh)
DE (1) DE112019001586T5 (zh)
WO (1) WO2019189018A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113937906A (zh) * 2021-10-29 2022-01-14 中国石油天然气集团有限公司 基于lcc能量传输拓扑的集成电感耦合机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110460242B (zh) * 2019-09-12 2020-11-10 台达电子企业管理（上海）有限公司 双向隔离型谐振变换器
JP7364506B2 (ja) 2020-03-18 2023-10-18 ローム株式会社 電力変換装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020064057A1 (en) * 2000-11-30 2002-05-30 Zhang Alpha J. Dc to dc converter for operating in selectable voltage modes
US20030142513A1 (en) * 2002-01-31 2003-07-31 Patrizio Vinciarelli Factorized power architecture with point of load sine amplitude converters
JP2010233294A (ja) * 2009-03-26 2010-10-14 Honda Motor Co Ltd 車両用電力変換装置
US20130016534A1 (en) * 2011-07-15 2013-01-17 Sanken Electric Co., Ltd. Resonant converter
KR101286509B1 (ko) * 2012-01-06 2013-07-16 서울과학기술대학교 산학협력단 직렬 공진 컨버터를 이용한 배터리 충전기
JP2013188010A (ja) * 2012-03-08 2013-09-19 Mitsubishi Electric Corp 絶縁型スイッチング電源装置
JP2014039384A (ja) * 2012-08-14 2014-02-27 Hitachi Automotive Systems Ltd Ｄｃ−ｄｃコンバータ装置
US20150180351A1 (en) * 2013-12-25 2015-06-25 Delta Electronics (Shanghai) Co., Ltd. Power electronic circuit and power module
JP5813184B1 (ja) * 2014-07-07 2015-11-17 三菱電機株式会社 直流変換装置
CN106329930A (zh) * 2015-07-06 2017-01-11 台达电子工业股份有限公司 功率变换器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200191747Y1 (ko) * 2000-02-29 2000-08-16 중앙전자통신주식회사 안정기의 트랜스
JP3557990B2 (ja) * 2000-03-09 2004-08-25 ソニーケミカル株式会社 情報記録タグ
JP2002272106A (ja) * 2001-03-13 2002-09-20 Sony Corp スイッチング電源回路
JP2009224933A (ja) * 2008-03-14 2009-10-01 Mitsubishi Electric Corp Ｌｃ直列回路部品
CN104426408B (zh) * 2013-09-05 2017-06-30 台达电子企业管理（上海）有限公司 变换电路以及应用于变换电路的变换电力的切换方法
US10333398B2 (en) 2015-08-06 2019-06-25 Hitachi Automotive Systems, Ltd. Charging apparatus
JP6621293B2 (ja) 2015-10-14 2019-12-18 新電元工業株式会社 スイッチング電源装置
US9847727B1 (en) * 2016-11-29 2017-12-19 National Chung Shan Institute Of Science And Technology Half-bridge resonant bidirectional DC-DC converter circuit having a half-bridge buck-boost converter and a resonant DC-DC converter
JP6784585B2 (ja) * 2016-12-16 2020-11-11 ローム株式会社 絶縁同期整流型ｄｃ／ｄｃコンバータ、同期整流コントローラ、電源アダプタおよび電子機器
CN111164889B (zh) * 2017-09-29 2023-11-03 株式会社村田制作所 混合滤波器装置以及多路调制器

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020064057A1 (en) * 2000-11-30 2002-05-30 Zhang Alpha J. Dc to dc converter for operating in selectable voltage modes
US20030142513A1 (en) * 2002-01-31 2003-07-31 Patrizio Vinciarelli Factorized power architecture with point of load sine amplitude converters
JP2010233294A (ja) * 2009-03-26 2010-10-14 Honda Motor Co Ltd 車両用電力変換装置
US20130016534A1 (en) * 2011-07-15 2013-01-17 Sanken Electric Co., Ltd. Resonant converter
KR101286509B1 (ko) * 2012-01-06 2013-07-16 서울과학기술대학교 산학협력단 직렬 공진 컨버터를 이용한 배터리 충전기
JP2013188010A (ja) * 2012-03-08 2013-09-19 Mitsubishi Electric Corp 絶縁型スイッチング電源装置
JP2014039384A (ja) * 2012-08-14 2014-02-27 Hitachi Automotive Systems Ltd Ｄｃ−ｄｃコンバータ装置
US20150180351A1 (en) * 2013-12-25 2015-06-25 Delta Electronics (Shanghai) Co., Ltd. Power electronic circuit and power module
CN104753338A (zh) * 2013-12-25 2015-07-01 台达电子企业管理（上海）有限公司 电力电子电路与功率模块
JP5813184B1 (ja) * 2014-07-07 2015-11-17 三菱電機株式会社 直流変換装置
CN106329930A (zh) * 2015-07-06 2017-01-11 台达电子工业股份有限公司 功率变换器

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
KANAKO SUGIMURA: "Surface-Oxidized Amorphous Alloy Powder/Epoxy-Resin Composite Bulk Magnetic Core and Its Application to Megahertz Switching LLC Resonant Converter", IEEE TRANSACTIONS ON MAGNETICS, vol. 11, no. 53, 21 July 2017 (2017-07-21) *
江志: "低功率高压电源的模块化设计", 火控雷达技术, no. 04, 30 December 2003 (2003-12-30) *
魏智: "用于雷达发射机的140kW高压开关电源", 现代雷达, no. 03, 30 May 2000 (2000-05-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113937906A (zh) * 2021-10-29 2022-01-14 中国石油天然气集团有限公司 基于lcc能量传输拓扑的集成电感耦合机构
CN113937906B (zh) * 2021-10-29 2022-10-18 中国石油天然气集团有限公司 基于lcc能量传输拓扑的集成电感耦合机构

Also Published As

Publication number Publication date
CN111937286B (zh) 2024-05-14
US20200412252A1 (en) 2020-12-31
JP6975902B2 (ja) 2021-12-01
DE112019001586T5 (de) 2021-02-11
WO2019189018A1 (ja) 2019-10-03
JP2019176611A (ja) 2019-10-10
US11336184B2 (en) 2022-05-17

Similar Documents

Publication Publication Date Title
US11336184B2 (en) Power converter
KR101896631B1 (ko) 비접촉 충전모듈 및 비접촉 충전기기
US20160372250A1 (en) Transformer and Power Converter Using the Same
WO2011154993A1 (ja) 絶縁トランスおよび電源装置
EP1717826B1 (en) Transformer
US9461549B2 (en) Electric power source device
CN106849714B (zh) 功率转换装置
KR101604325B1 (ko) 변압기와 이를 포함하는 고전압 전원장치
KR101018625B1 (ko) 맞춤형 트랜스포머 및 인덕터
JP7432077B2 (ja) 中周波変圧器のための一体構造の一部分としての巻線構成
CN114787948A (zh) 变压器及其制造方法、充电装置以及电源装置
JP6393668B2 (ja) Ｄｃ−ｄｃコンバータ装置
CN111668000B (zh) 强化绝缘变压器以及其设计方法
US10937591B2 (en) Coil unit, wireless power transmission device, wireless power receiving device, and wireless power transmission system
US20220410738A1 (en) Power conversion apparatus, vehicle including the same, and method of controlling
WO2022079871A1 (ja) トランス、及び電力変換装置
JP7420092B2 (ja) 絶縁トランス
WO2024080038A1 (ja) トランス、及び電源装置
JP4300718B2 (ja) 共振型ｄｃ−ｄｃコンバータ
WO2023171136A1 (ja) トランスとその製造方法、充電装置及び電源装置
US20240047120A1 (en) Balanced boost dc/dc converter
JP7059760B2 (ja) コイルユニット、ワイヤレス送電装置、ワイヤレス受電装置及びワイヤレス電力伝送システム
US10923271B2 (en) Core and transformer
JP6492992B2 (ja) 電力変換装置
KR101626151B1 (ko) 누설자속 저감을 위한 고주파 변압기

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20240409

Address after: Kanagawa Prefecture, Japan

Applicant after: Panasonic Automotive Electronic Systems Co.,Ltd.

Country or region after: Japan

Address before: Osaka, Japan

Applicant before: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co.,Ltd.

Country or region before: Japan

GR01 Patent grant
GR01 Patent grant