WO2017016508A1 - 压接式功率模块阀段 - Google Patents

压接式功率模块阀段 Download PDF

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Publication number
WO2017016508A1
WO2017016508A1 PCT/CN2016/092095 CN2016092095W WO2017016508A1 WO 2017016508 A1 WO2017016508 A1 WO 2017016508A1 CN 2016092095 W CN2016092095 W CN 2016092095W WO 2017016508 A1 WO2017016508 A1 WO 2017016508A1
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WIPO (PCT)
Prior art keywords
end plate
loading
valve
power module
insulating
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Ceased
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PCT/CN2016/092095
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English (en)
French (fr)
Inventor
李华君
朱新华
肖晋
谢云龙
张承
姚志国
宋全刚
孙晶晶
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XJ Electric Co Ltd
State Grid Corp of China SGCC
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XJ Electric Co Ltd
State Grid Corp of China SGCC
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Application filed by XJ Electric Co Ltd, State Grid Corp of China SGCC filed Critical XJ Electric Co Ltd
Publication of WO2017016508A1 publication Critical patent/WO2017016508A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W78/00—Detachable holders for supporting packaged chips in operation
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Definitions

  • the invention relates to a crimped power module valve segment.
  • Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converter, turn-off device and pulse width modulation technology. Compared with the traditional thyristor-based current source DC transmission technology, the flexible DC transmission technology uses a fully controlled power electronic device-insulated gate bipolar transistor (IGBT), which has a fast response, good controllability, and operation. Flexible mode, which can reduce system short circuit capacity and improve power quality. It has obvious advantages in the connection of renewable energy, grid-connected power generation, island power supply, and urban power grid.
  • IGBT fully controlled power electronic device-insulated gate bipolar transistor
  • the embodiment of the invention provides a pressure-connected power module valve segment, comprising an intermediate frame extending in the left-right direction and left and right end plates disposed at the left and right ends of the intermediate frame, and the two end plates are configured to cooperate with each other to
  • the two clamping devices of the valve group formed by the at least two power modules arranged in series are clamped in the direction
  • the intermediate frame includes insulating rods respectively fixed to the left and right end plates at both ends, and the left and right end plates are respectively disposed
  • the left end plate includes a left end plate support fixedly assembled with the right end plate and a movable end plate assembled on the left end plate support guided in the left and right direction, and the left end of the insulating rod is fixedly connected with the movable end plate.
  • a fixing tie rod is fixedly connected to the left end plate, and a fixed mounting portion on the left end plate is disposed on the left end plate support, one of the two clamping devices is disposed on the right end plate, and the other is disposed at the On the active end board.
  • the movable end plate is movably fitted on the left end plate support by a dovetail guide structure extending between the movable end plate and the left end plate support extending in the left-right direction.
  • the right end plate and the movable end plate respectively comprise an end plate body configured to install a corresponding clamping device, and the two clamping devices are correspondingly applied to the two end plate bodies for applying a force to the external loading mechanism.
  • the loading device, the two top pressure loading devices respectively have a top pressure clamping portion configured to press the corresponding end portion of the valve group, and at least one of the two top pressure loading devices is an elastic pressing device.
  • the elastic top loading device includes a loading shaft that is guided and moved on the corresponding end plate body in a left-right direction.
  • One end of the loading shaft facing the valve group is an inner end, and the loading shaft is provided with an outer end.
  • the lock nut that secures the loading shaft to the corresponding end plate body when the disc spring moves into position.
  • one of the two top loading devices is the elastic pressing device, and the other is a rigid pressing device.
  • the rigid pressing device includes axially assembling the corresponding end plate body in the left and right direction.
  • the spherical adjusting bolt on the upper side of the spherical adjusting bolt is pressed against the transmission shaft, and the driving shaft is slidably mounted in the left and right direction in a guiding sleeve fixed on the corresponding end plate body, and the driving shaft faces the valve block.
  • One end is a rigid pressing end for applying a rigid pressing force to the valve block.
  • the right end plate includes a right end plate support and a fixed end plate fixed to the right end plate support by a bolt coupling structure, and the fixed installation portion of the right end plate is disposed on the right end plate support, and the right end of the insulation rod passes
  • the fixed end plate is fixedly connected to realize the fixing of the insulating rod and the right end plate.
  • the right end plate and the movable end plate respectively comprise an end plate body configured to install a corresponding clamping device, and two ends of the insulating pull rod are respectively fixedly connected with the two end plate bodies, and are disposed on the side surface of the end plate body a card slot extending in the left-right direction, the corresponding end of the insulating rod is locked in the card slot in the left-right direction, and is detachably fixed on the end plate body and configured to press the insulating rod into the The platen in the card slot.
  • the left end plate supports of the right end plate and the left end plate are fixedly assembled by the insulating support beams extending in the left-right direction.
  • the power module is an IGBT sub-module
  • the valve group includes an IGBT sub-module and an inter-module insulation block arranged in sequence in the left-right direction, and the ends of the valve group and the two clamping devices are respectively provided with ends Insulation block.
  • the left end plate of the intermediate frame includes a left end plate support and a left end plate support that is guided and moved in the left and right direction.
  • the fixed mounting portion of the left end plate is disposed on the left end plate support, and the left end of the insulating tie rod of the intermediate frame is fixedly connected to the movable end plate. Due to the action of the insulating tie rod, the movable end plate cooperates with the right end plate to clamp the positioning valve group through the two clamping devices.
  • the movable end plate When the internal part of the valve section is internally stressed due to the rigid connection or when the components or the insulating rod inside the valve block are caused by thermal expansion and contraction, the movable end plate is driven by the stress in the left and right direction at the left end plate support.
  • the fine adjustment movement is carried out to ensure the self-adjustment of the system stress in the left and right direction of the valve section as a whole, effectively eliminating the internal stress generated by the rigid connection inside the traditional valve section and the deformation of the part due to thermal expansion and contraction.
  • the internal stress effectively improves the stability of the pressing force of the valve section of the crimping power module.
  • FIG. 1 is a schematic structural view of an embodiment of a crimping power module valve segment provided by the present invention
  • Figure 2 is a schematic structural view of the frame of Figure 1;
  • Figure 3 is a schematic view of the left clamping structure of Figure 1;
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a schematic view of the right clamping structure of Figure 1;
  • Figure 6 is a cross-sectional view taken along line B-B of Figure 5;
  • the left and right end plates are respectively fixed on the frame beam as the mounting base by bolt fixing, and the insulating pull rods connecting the left and right end plates are also fixedly assembled on the two end plates.
  • the valve block and the insulating tie rod in the valve section are deformed by the influence of stress, thermal expansion and contraction, etc., but the existing valve section structure is mostly rigid connection structure, the whole valve The segment itself does not have self-regulating ability, and the entire valve segment will generate large mechanical stress.
  • the left end plate of the intermediate frame in the crimping power module valve section, includes a left end plate support and a movable end plate mounted on the left end plate support guided in the left and right direction.
  • the fixed mounting portion of the left end plate is disposed on the left end plate support, and the left end of the insulating pull rod of the intermediate frame is fixedly connected to the movable end plate.
  • an embodiment of a pressure-connected power module valve segment the power module valve segment in this embodiment is specifically an IGBT valve segment, and the IGBT valve segment includes an intermediate frame 100 extending in the left-right direction. And a left end plate 200 and a right end plate 300 disposed at the left and right ends of the intermediate frame 100, that is, a left end plate 200 is disposed at a left end of the intermediate frame 100, and a right end plate 300 is disposed at a right end of the intermediate frame 100, and two end plates (left end plate 200 and right end)
  • the plate 300) is respectively provided with clamping devices, and the two clamping devices are configured to cooperate to clamp and position the valve group formed by the plurality of IGBT sub-modules arranged in series in the left-right direction, and the valve group includes the left and right
  • the IGBT sub-module 19 and the inter-module insulating block 20 are sequentially arranged in the direction, and the end insulating block 18 is disposed between the left and
  • the left end plate includes a left end plate support 2 and a movable end plate 5 movably mounted on the left end plate support 2 in the left-right direction, and the fixed mounting portion on the left end plate is correspondingly disposed.
  • the movable end plate 5 is movably fitted to the left end plate support by a dovetail guide structure extending between the movable end plate 5 and the left end plate support 2 in the left-right direction. 2 on.
  • the right end plate includes a right end plate support 3 and a fixed end plate 6 fixed to the right end plate support 3 by a bolt coupling structure, and the fixed end portion of the right end plate is disposed at the right end plate. Support 3.
  • the two ends of the insulating rod 7 of the intermediate frame are respectively fixed to the left end plate and the right end plate.
  • the left end of the insulating rod 7 is fixedly connected to the movable end plate 5 to realize the fixing of the insulating rod 7 and the left end plate.
  • the right end of the insulating rod 7 is fixedly connected to the fixed end plate 6 to fix the insulating rod 7 and the right end plate.
  • the right end plate support 3 of the right end plate and the left end plate support 2 of the left end plate are fixedly assembled by the insulating support beams 4 extending in the left-right direction.
  • One of the two clamping devices on the intermediate frame is disposed on the right end plate and the other is disposed on the movable end plate 5, and the right end plate and the movable end plate 5 respectively include an end plate body for mounting the corresponding clamping device
  • the two clamping devices are corresponding pressure loading devices corresponding to the external loading mechanism installed on the two end plate bodies, wherein the pressing device mounted on the movable end plate 5 is a rigid pressing device, and
  • the top pressure loading device disposed on the right end plate is specifically an elastic top loading device.
  • the rigid top pressure loading device is disposed on the baffle body of the movable end plate 5.
  • the rigid top pressure loading device specifically includes an axially spirally assembled to the movable end plate 5 in the left and right direction.
  • the spherical adjusting bolt 11 on the baffle body, the end of the spherical adjusting bolt 11 facing the valve block is a ball head, the ball head of the spherical adjusting bolt 11 is press-fitted to the transmission shaft 10, and the transmission shaft 10 is slidably mounted in the left and right direction.
  • one end of the transmission shaft 10 facing the valve block is a rigid pressing end for applying a rigid pressing force to the valve block, and the rigid top of the transmission shaft 10
  • the inner end pressing plate 12 is fixed at the pressing end, and the inner pressing plate 12 and the corresponding side end are fixed
  • the positioning slot on the insulating block 18 is fitted and fitted.
  • the elastic pressing device is disposed on the end plate body of the fixed end plate 6, and the elastic pressing device comprises guiding and moving in the left and right direction to be assembled on the fixed end plate 6.
  • the loading shaft 13 on the end plate body defines an end of the loading shaft 13 facing the valve block as an inner end, and the loading shaft 13 is provided with a disc spring 14 whose outer end is pressed against the loading shaft, on the loading shaft 13 A retaining flange is provided with a press fit corresponding to the disc spring 14.
  • the inner section of the disc spring 14 is an elastic pressing end configured to apply an elastic pressing force to the valve block, and the inner end of the loading shaft 13 is also coaxially fitted.
  • the loading shaft 13 is fixed with a baffle 16 for moving inwardly of the disc spring 14 and the retaining ring 15 to disengage the loading shaft.
  • the inner end of the retaining ring 15 corresponds to the end of the corresponding side.
  • the positioning slot on the insulating block 18 is fitted and fitted.
  • the loading shaft 13 is further provided with a lock disposed outside the disc spring 13 to fix the loading shaft 13 to the end plate body of the fixed end plate 6 when the loading shaft pushing the disc spring 13 is moved and loaded into position.
  • the tightening nut 17 , the lock nut 17 here is screwed specifically on the loading shaft 13 , and the end plate body of the fixed end plate 6 is arranged to wear the stepped hole of the loading shaft 13 with the stepped surface facing inward, locking The outer end of the nut 17 is pressed against the inward step surface of the stepped bore.
  • valve segments can be assembled as follows:
  • Step 1 Fix the left end plate support 2 and the right end plate support 3 of the valve section on the operating platform as the base body, and lock the left end plate support 2 and the right end plate support 3 by screwing the insulating support beams 4 at both ends. Fixedly assembled together.
  • Step 2 the fixed end plate 6 and the right end plate support 3 are locked and fixed by bolts; the movable end plate 5 and the left end plate support 2 are clamped into position by the dovetail groove structure, and the two insulating rods with the end of the metal fitting are 7
  • the card plates 8 are respectively fitted into the card slots pre-set on the side surfaces of the end plate bodies of the fixed end plate 6 and the movable end plate 5, and the pressure plate 8 is locked by bolts on the end plate bodies of the fixed end plate 6 and the movable end plate 5.
  • Step 3 the guide sleeve 9 is fixed to the inner side of the movable end plate 5, and the inner side of the guide sleeve 9 is inserted into the transmission shaft 10, and the ball stud bolt 11 is screwed into the movable end plate 5, and the end of the ball stud bolt 11 is provided in the groove.
  • a semi-circular ball head, the end face of the semi-spherical ball head is matched with the end surface of the transmission shaft 10, and continues to rotate
  • the bolt is screwed out of the drive shaft 10 to the guide device 9, and inserted into the groove of the pressure plate 12 on the inner side of the valve section to be in mating contact with it.
  • Step 4 the disc spring 14 and the retaining ring 15 are respectively set on the side of the loading shaft 13, and the above parts are fixed by the stopper 16, and the other side of the loading shaft 13 is screwed with the lock nut 17, and the assembled elastic pressing is performed.
  • the loading device is slid over the fixed end plate 6.
  • Step 5 the above structures collectively constitute the intermediate frame 100 of the crimping type IGBT valve segment, and the structure of the intermediate frame 100 is as shown in FIG.
  • step 6 the end insulating block 18, the IGBT sub-module 19, and the inter-module insulating block 20 are sequentially assembled into the intermediate frame 1 as needed.
  • the end insulating block 18, the IGBT sub-module 19, and the inter-module insulating block 20 are connected by internal axial screw connection, and the IGBT sub-module 19 is embedded in the insulating support beam 4 by a fixed block card protruding from the bottom of the heat sink.
  • step 8 the ball stud 11 is screwed by a mechanical wrench, and the side of the valve section is pressed, and the tooling is just inserted into the surface of the drive shaft 10 to stop the pressing.
  • Step 9 on the right side of the valve section, the top end of the hydraulic tool is sleeved on the fixed end plate 6, and the valve section is pressed with a hydraulic tool, and the central axis of the hydraulic tool is pressed against the loading shaft 13, so that the retaining ring 15 is limited
  • the disc spring 14 and the disc spring 14 are deformed.
  • the power module is an IGBT module. In other embodiments, the power module may also be a thyristor or other fully controlled power module.
  • one of the two clamping devices is a rigid top loading device and the other is an elastic pressing device.
  • the two clamping devices can also be two elastic pressing devices.
  • the left end plate of the intermediate frame includes a left end plate support and a movable end plate assembled on the left end plate support guided and moved in the left-right direction, and the left end plate is fixedly mounted.
  • the portion is disposed on the left end plate support, and the left end of the insulating rod of the intermediate frame is fixedly connected to the movable end plate. Due to the action of the insulating tie rod, the movable end plate cooperates with the right end plate to clamp the positioning valve group through the two clamping devices.
  • the two clamping devices are all the top loading devices for applying the force to the external loading mechanism, so that one end loading or both ends can be loaded according to actual needs, or one end unloading or simultaneous unloading at both ends according to actual needs.
  • the entire valve section is more flexible and convenient to operate. Especially when clamping a power module with large deformation, if only one-side loading is used, since the deformation of the power module during the loading process is large, the loading stroke of the one-side loading is long, and the operation is inconvenient, and the two ends are used. If loaded, it can effectively reduce the one-side loading stroke and reduce the volume of the top pressure loading device. Moreover, at least one of the two top loading devices is an elastic pressing device, so that the safety of the power module can be ensured during the loading process.
  • the insulating rod is fixedly connected to the corresponding end plate body through the structure of the card slot and the pressing plate, thereby eliminating the connection of the insulating rod and the end plate body by bolt connection, thereby increasing system reliability.

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  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Power Conversion In General (AREA)
  • Fuel Cell (AREA)

Abstract

提供一种压接式功率模块阀段，包括中间框架（100）和左（200）、右端板（300），两端板上设有两夹持装置，中间框架（100）包括两端分别与左（200）、右端板（300）固连的绝缘拉杆（7），左（200）、右端板（300）上分别设有用于将阀段固定在安装基体上的固定安装部，左端板（200）包括用于与右端板（300）固定装配的左端板支座（2）及沿左右方向导向移动的装配在左端板支座（2）上的活动端板（5），绝缘拉杆（7）的左端通过与活动端板（5）固连实现绝缘拉杆（7）与左端板（200）的固连，左端板（200）上的固定安装部设置在左端板支座（2）上，两夹持装置中的其中一个设置在右端板（300）上、另一个设置在活动端板（5）上。

Description

压接式功率模块阀段 技术领域
本发明涉及一种压接式功率模块阀段。
背景技术
柔性直流输电技术是一种以电压源变流器、可关断器件和脉宽调制技术为基础的新型直流输电技术。与传统基于晶闸管的电流源型直流输电技术相比，柔性直流输电技术采用了全控型的电力电子器件-绝缘栅双极型晶体管(IGBT)，系统反应速度快、可控性较好、运行方式灵活，能够减少系统短路容量，提高电能质量。在可再生能源并网、分布式发电并网、孤岛供电、城市电网供电等方面具有明显的优势。
传统的压接式IGBT阀段与晶闸管阀段压接方式相似，多为刚性连接结构，整个阀段自身不具备自我调节能力，因此整个阀段容易产生较大的机械应力。
发明内容
为解决现有存在的技术问题，本发明实施例提供一种压接式功率模块阀段。
为达到上述目的，本发明实施例的技术方案是这样实现的：
本发明实施例提供了一种压接式功率模块阀段，包括沿左右方向延伸的中间框架和设置在中间框架左右两端的左、右端板，两端板上设有配置为配合使用以在左右方向上夹持定位由串列布置的至少两个功率模块所形成的阀组的两夹持装置，中间框架包括两端分别与左、右端板固连的绝缘拉杆，左、右端板上分别设有用于将阀段固定在安装基体上的固定安装部， 所述左端板包括配置为与右端板固定装配的左端板支座及沿左右方向导向移动的装配在左端板支座上的活动端板，所述绝缘拉杆的左端通过与活动端板固连实现绝缘拉杆与所述左端板的固连，所述左端板上的固定安装部设置在所述左端板支座上，所述两夹持装置中的一个设置在右端板上、另一个设置在所述活动端板上。
上述方案中，所述活动端板通过设置在活动端板和左端板支座之间的沿左右方向延伸的燕尾槽导向结构导向可移动地装配在所述左端板支座上。
上述方案中，所述右端板和活动端板分别包括配置为安装相应夹持装置的端板本体，两夹持装置为对应安装在两端板本体上的供外界加载机构施加作用力的顶压加载装置，两顶压加载装置分别具有配置为顶压夹持所述阀组的相应端部的顶压夹持部，两顶压加载装置中至少一个顶压加载装置为弹性顶压加载装置。
上述方案中，所述弹性顶压加载装置包括沿左右方向导向移动装配在对应端板本体上的加载轴，加载轴的朝向所述阀组的一端为内端，加载轴上套装有外端顶压在加载轴上的碟簧，碟簧具有配置为向阀组施加弹性顶压作用力的弹性顶压端，加载轴上还套装有布置在所述碟簧外侧的配置为在加载轴顶推碟簧移动加载到位时将加载轴固定在相应端板本体上的锁紧螺母。
上述方案中，所述两顶压加载装置中的一个为所述弹性顶压加载装置、另一个为刚性顶压加载装置，刚性顶压加载装置包括轴向沿左右方向螺旋装配在对应端板本体上的球形调整螺栓，球形调整螺栓的朝向阀组的一端顶压配合传动轴，传动轴沿左右方向滑动穿装在固设于对应端板本体上的导向套中，传动轴的朝向阀组的一端为用于向阀组施加刚性顶压作用力的刚性顶压端。
上述方案中，所述右端板包括右端板支座和通过螺栓联接结构固设在右端板支座上的固定端板，右端板的固定安装部设置在右端板支座上，绝缘拉杆的右端通过与固定端板固连以实现绝缘拉杆与右端板的固连。
上述方案中，所述右端板和活动端板分别包括配置为安装相应夹持装置的端板本体，所述绝缘拉杆的两端分别与两端板本体固连，在端板本体的侧面上设有沿左右方向延伸的卡槽，所述绝缘拉杆的相应端沿左右方向卡装在所述卡槽中，在端板本体上还可拆地固设有配置为将绝缘拉杆压装在所述卡槽中的压板。
上述方案中，所述右端板和左端板的左端板支座通过沿左右方向延伸的绝缘支撑梁固定装配在一起。
上述方案中，所述功率模块为IGBT子模块，所述阀组包括沿左右方向依次相间布置的IGBT子模块和模块间绝缘挡块，阀组两端和两夹持装置之间分别设有端部绝缘挡块。
上述方案中，所述端部绝缘挡块的朝向阀组的一侧面为顶压平面、朝向对应夹持装置的一端设有配置为与对应夹持装置的顶压夹持部吻合插接卡装的定位卡槽。
本发明实施例所提供的有益效果是：本发明实施例所提供的压接式功率模块阀段中，中间框架的左端板包括左端板支座和沿左右方向导向移动的装配在左端板支座上的活动端板，左端板的固定安装部设置在左端板支座上，中间框架的绝缘拉杆的左端与活动端板固连。由于绝缘拉杆的作用，活动端板与右端板配合通过两夹持装置夹持定位阀组。当阀段内部因为刚性连接而产生内应力或者是在阀组内部各零部件或绝缘拉杆出现因热胀冷缩导致产生应力时，由活动端板在应力驱动下沿左右方向在左端板支座上进行微调移动，保证阀段整体在左右方向上的系统应力的自我调节，有效消除传统阀段内部刚性连接产生的内应力及零件因热胀冷缩变形而产生的 内应力，有效提高了压接式功率模块阀段压紧力的稳定性。
附图说明
图1为本发明所提供的压接式功率模块阀段的一种实施例的结构示意图；
图2为图1中框架的结构示意图；
图3为图1中左侧夹持结构示意图；
图4为图3中A-A剖视图；
图5为图1中右侧夹持结构示意图；
图6为图5中B-B剖视图。
具体实施方式
下面结合附图及实施例对本发明再作进一步详细的描述。
传统的压接式功率模块阀段多为刚性连接结构，比如：在申请公布号为CN103354233A的中国发明专利申请中公开了一种压接式的晶闸管阀段，晶闸管阀段包括沿左右方向间隔布置的左端板和右端板，左端板和由端板通过中间框架固定装配，在右端板上设置弹性夹紧装置，在左端板上设有顶压装置，弹性夹紧装置和顶压装置作为两夹持装置夹持定位由相间设置的晶闸管和散热器组成的阀组。使用时，由弹性夹紧装置一侧承压，另一侧使用顶压工具顶压以对阀组进行加压，实现对阀组的有效定位。
上述的功率模块阀段的压接方式中，左右端板分别通过螺栓固定的方式安装在作为安装基体的框架横梁上，且连接左右端板的绝缘拉杆也是分别固定的装配在两端板上，这使得整个阀段整体为刚性连接结构。在不同的运行工况下，阀段中的阀组及绝缘拉杆等零部件存在受应力、热胀冷缩等影响产生的变形，但由于现有的阀段结构多为刚性连接结构，整个阀段自身不具备自我调节能力，整个阀段会产生较大的机械应力。
基于此，在本发明的各种实施例中：压接式功率模块阀段中，中间框架的左端板包括左端板支座和沿左右方向导向移动的装配在左端板支座上的活动端板，左端板的固定安装部设置在左端板支座上，中间框架的绝缘拉杆的左端与活动端板固连。
如图1至图6所示，一种压接式功率模块阀段的实施例，该实施例中的功率模块阀段具体为IGBT阀段，该IGBT阀段包括沿左右方向延伸的中间框架100和设置在中间框架100左右两端的左端板200和右端板300，即中间框架100的左端设置有左端板200，中间框架100的右端设置有右端板300，两个端板(左端板200和右端板300)上分别设有夹持装置，两个夹持装置配置为配合使用，以在左右方向上夹持定位由串列布置的多个IGBT子模块所形成的阀组，阀组包括沿左右方向依次相间布置的IGBT子模块19和模块间绝缘挡块20，阀组左右两端和两夹持装置之间分别设有端部绝缘挡块18，端部绝缘挡块18的朝向阀组的一侧面为顶压平面、朝向对应夹持装置的一端设有配置为与对应夹持装置的顶压夹持部吻合插接卡装的定位卡槽。
在一实施例中，如图2所示，中间框架包括左端板和右端板，左右端板上分别设有配置为将阀段固定在安装基体上的固定安装部，此处的固定安装部均为螺栓安装孔。
如图2至图4所示，左端板包括左端板支座2及沿左右方向导向可移动地装配在左端板支座2上的活动端板5，左端板上的所述固定安装部对应设置在左端板支座2上，且活动端板5通过设置在活动端板5和左端板支座2之间的沿左右方向延伸的燕尾槽导向结构导向可移动地装配在所述左端板支座2上。如图2、图5及图6所示，右端板包括右端板支座3和通过螺栓联接结构固设在右端板支座3上的固定端板6，右端板的固定安装部设置在右端板支座3上。
中间框架的绝缘拉杆7的两端分别与左端板和右端板固连，具体来说，绝缘拉杆7的左端与通过与活动端板5固连实现绝缘拉杆7与所述左端板的固连，而绝缘拉杆7的右端通过与固定端板6固连以实现绝缘拉杆7与右端板的固连。
具体来说，固定端板6和活动端板5分别包括配置为安装相应夹持装置的端板本体，所述绝缘拉杆7的两端分别与两端板本体固连，在端板本体的侧面上设有沿左右方向延伸的卡槽，所述绝缘拉杆7的相应端沿左右方向卡装在所述卡槽中，在端板本体上还可拆地固设有配置为将绝缘拉杆7压装在对应卡槽中的压板8。
并且，在一实施例中，为提高阀段的整体结构强度，右端板的右端板支座3和左端板的左端板支座2通过沿左右方向延伸的绝缘支撑梁4固定装配在一起。
中间框架上的两个夹持装置中的一个设置在右端板上、另一个设置在所述活动端板5上，右端板和活动端板5分别包括用于安装相应夹持装置的端板本体，两夹持装置为对应安装在两端板本体上的供外界加载机构施加作用力的顶压加载装置，其中，设置在活动端板5上的顶压加载装置为刚性顶压加载装置，而设置在右端板上的顶压加载装置具体为弹性顶压加载装置。
本实施例中，如图3、图4所示，刚性顶压加载装置设置在活动端板5的挡板本体上，刚性顶压加载装置具体包括轴向沿左右方向螺旋装配在活动端板5的挡板本体上的球形调整螺栓11，球形调整螺栓11的朝向阀组的一端为球头，球形调整螺栓11的球头顶压配合传动轴10，传动轴10沿左右方向滑动穿装在固设于活动端板5的端板本体上的导向套9中，传动轴10的朝向阀组的一端为用于向阀组施加刚性顶压作用力的刚性顶压端，在传动轴10的刚性顶压端固设有内侧压盘12，内侧压盘12与相对应侧的端 部绝缘挡块18上的定位卡槽吻合嵌装。
在一实施例中，如图5、图6所示，弹性顶压加载装置设置在固定端板6的端板本体上，弹性顶压加载装置包括沿左右方向导向移动装配在固定端板6的端板本体上的加载轴13，将加载轴13的朝向所述阀组的一端定义为内端，加载轴13上套装有外端顶压在加载轴上的碟簧14，在加载轴13上设有与碟簧14对应顶压配合的挡止凸缘，碟簧14的内段为配置为向阀组施加弹性顶压作用力的弹性顶压端，在加载轴13内端还同轴套装有挡圈15，加载轴13的内端面上固设有用于放置在碟簧14和挡圈15向内移动以脱出加载轴的挡板16，挡圈15的内端对应与相对应侧的端部绝缘挡块18上的定位卡槽吻合嵌装。并且，在加载轴13上还套装有布置在所述碟簧13外侧的配置为在加载轴顶推碟簧13移动加载到位时将加载轴13固定在固定端板6的端板本体上的锁紧螺母17，此处的锁紧螺母17具体螺旋装配在加载轴13上，在固定端板6的端板本体上配置为穿装加载轴13的穿孔为阶梯面朝内的阶梯孔，锁紧螺母17的外端顶压在阶梯孔的朝内的阶梯面上。
本实施例中，可按照下述步骤组装阀段：
步骤1，将阀段的左端板支座2和右端板支座3固定在作为基体的操作平台上，并通过两端螺纹锁紧绝缘支撑梁4将左端板支座2和右端板支座3固定装配在一起。
步骤2，将固定端板6与右端板支座3通过螺栓锁紧固定；将活动端板5与左端板支座2通过燕尾槽结构卡装到位，将两根带金具端头的绝缘拉杆7分别卡装到固定端板6和活动端板5的端板本体的侧面上预设有的卡槽中，压板8通过螺栓锁紧在固定端板6和活动端板5的端板本体上。
步骤3，将导向套9固定到活动端板5内侧，导向套9内侧装入传动轴10，球头螺栓11通过螺纹旋进活动端板5内，球头螺栓11端部凹槽内设有一半圆形球头，该半圆形球头的端面与传动轴10端面配合，通过继续旋 拧螺栓将传动轴10部分旋出导向装置9，插入阀段内侧压盘12的凹槽，与之配合接触。
步骤4，将加载轴13一侧分别套装碟簧14、挡圈15，并用挡块16固定上述零件，将加载轴13的另一侧旋拧锁紧螺母17，将上述组装好的弹性顶压加载装置卡套在固定端板6上。
步骤5，上述结构共同构成压接式IGBT阀段的中间框架100，中间框架100的结构如图2所示。
组装阀段：
步骤6，依次将端部绝缘挡块18、IGBT子模块19、模块间绝缘挡块20根据需要装配入中间框架1内。端部绝缘挡块18、IGBT子模块19、模块间绝缘挡块20通过内部轴向螺丝连接限位，IGBT子模块19通过散热器底部伸出的固定块卡嵌入绝缘支撑梁4定位。
步骤7，阀段左侧的刚性顶压加载装置依靠内侧压盘12卡嵌入左侧的端部绝缘挡块18限位，阀段右侧的弹性顶压加载装置依靠挡圈15卡嵌入右侧的端部绝缘挡块18限位。
步骤8，通过机械扳手旋拧球头螺栓11，对阀段一侧顶压，待工装正好卡入传动轴10旋出表面，停止顶压。
步骤9，阀段右侧，将液压工具的顶压端头卡套在固定端板6上，用液压工具给阀段顶压，液压工具的中心轴顶压加载轴13，使挡圈15限位碟簧14，碟簧14发生变形，待液压工具的仪表显示到所需压力时，停止顶压，用特制扳手锁紧加载轴上的锁紧螺母17，液压工具缓慢泄压，泄压结束后从固定端板6上移走工装，阀段安装结束。
这里，步骤8～9为阀段阀段顶压过程。
步骤10，同理，阀段维护时，可以根据阀段在阀组件上的安装位置任意选择左、右侧阀段进行卸压。
本实施例中，功率模块为IGBT模块，在其他实施例中，功率模块也可以为晶闸管或者其他的全控功率模块。
本实施例中，在采用双向加压或双向卸压的方式装拆阀段，在其他实施例中，也可以通过单侧加压或单侧卸压的方式装拆阀端，此处功率模块最好为夹持后变形不大的晶闸管等功率模块。
本实施例中，活动端板通过燕尾槽导向结构导向移动装配在左端板支座上，在其他实施例中，活动端板也可以通过其他的导向装配结构导向移动的装配在左端板支座上。
本实施例中，两夹持装置中的其中一个为刚性顶压加载装置，另一个为弹性顶压加载装置，在其他实施例中，两夹持装置也可以为两个弹性顶压加载装置。
本实施例中，刚性顶压加载装置也可以采用现有技术常用的刚性的顶压装置，而弹性顶压加载装置也可以采用现有技术中阀段装配时所用的弹性顶压加载装置。
本发明实施例所提供的压接式功率模块阀段中，中间框架的左端板包括左端板支座和沿左右方向导向移动的装配在左端板支座上的活动端板，左端板的固定安装部设置在左端板支座上，中间框架的绝缘拉杆的左端与活动端板固连。由于绝缘拉杆的作用，活动端板与右端板配合通过两夹持装置夹持定位阀组。当阀段内部因为刚性连接而产生内应力或者是在阀组内部各零部件或绝缘拉杆出现因热胀冷缩导致产生应力时，由活动端板在应力驱动下沿左右方向在左端板支座上进行微调移动，保证阀段整体在左右方向上的系统应力的自我调节，有效消除传统阀段内部刚性连接产生的内应力及零件因热胀冷缩变形而产生的内应力，有效提高了压接式功率模块阀段压紧力的稳定性。采用本发明实施例提供的方案，能解决现有技术中存在的传统规定压接式功率模块阀段自身缺少调节能力导致阀段容易产 生较大机械应力的技术问题。
另外，通过燕尾槽导向结构实现活动端板与左端板支座的导向装配，不仅可实现对活动端板的稳定导向，还可以在前后及上下方向上实现对活动端板的有效定位。
两夹持装置均为供外界加载机构施加作用力的顶压加载装置，这样就可以根据实际需要采用一端加载或两端同时加载，也可以根据实际需要进行一端卸载或两端同时卸载的操作，整个阀段操作更加灵活、方便。特别是在夹持变形较大的功率模块时，如果仅采用单侧加载的话，由于加载过程中功率模块的变形量较大，单侧加载的加载行程较长，操作较为不便，而采用两端加载的话，就可以有效减少单侧加载行程，减少顶压加载装置的体积。并且，两顶压加载装置中的至少一个顶压加载装置为弹性顶压加载装置，这样可以在加载过程中保证功率模块的安全。
除此以外，绝缘拉杆通过卡槽和压板的结构将绝缘拉杆与对应的端板本体固连在一起，省去通过螺栓联接将绝缘拉杆与端板本体固连，增加系统可靠性。
通过绝缘支撑梁将右端板和左端板的左端板支座固定装配，可以提高阀段的整体强度。
功率模块具体为IGBT子模块，通过在IGBT子模块两侧布置模块间绝缘挡块及在阀组两端和两夹持装置之间设置端部绝缘挡块，保证阀段中各IGBT子模块之间的电气独立。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。

Claims (10)

  1. 一种压接式功率模块阀段，包括沿左右方向延伸的中间框架和设置在中间框架左右两端的左、右端板，两端板上设有配置为配合使用以在左右方向上夹持定位由串列布置的至少两个功率模块所形成的阀组的两夹持装置，中间框架包括两端分别与左、右端板固连的绝缘拉杆，左、右端板上分别设有用于将阀段固定在安装基体上的固定安装部，所述左端板包括配置为与右端板固定装配的左端板支座及沿左右方向导向移动的装配在左端板支座上的活动端板，所述绝缘拉杆的左端通过与活动端板固连实现绝缘拉杆与所述左端板的固连，所述左端板上的固定安装部设置在所述左端板支座上，所述两夹持装置中的一个设置在右端板上、另一个设置在所述活动端板上。
  2. 根据权利要求1所述的压接式功率模块阀段，其中，所述活动端板通过设置在活动端板和左端板支座之间的沿左右方向延伸的燕尾槽导向结构导向可移动地装配在所述左端板支座上。
  3. 根据权利要求1或2所述的压接式功率模块阀段，其中，所述右端板和活动端板分别包括配置为安装相应夹持装置的端板本体，两夹持装置为对应安装在两端板本体上的供外界加载机构施加作用力的顶压加载装置，两顶压加载装置分别具有配置为顶压夹持所述阀组的相应端部的顶压夹持部，两顶压加载装置中至少一个顶压加载装置为弹性顶压加载装置。
  4. 根据权利要求3所述的压接式功率模块阀段，其中，所述弹性顶压加载装置包括沿左右方向导向移动装配在对应端板本体上的加载轴，加载轴的朝向所述阀组的一端为内端，加载轴上套装有外端顶压在加载轴上的碟簧，碟簧具有配置为向阀组施加弹性顶压作用力的弹性顶压端，加载轴上还套装有布置在所述碟簧外侧的配置为在加载轴顶推碟簧移动加载到位时将加载轴固定在相应端板本体上的锁紧螺母。
  5. 根据权利要求4所述的压接式功率模块阀段，其中，所述两顶压加载装置中的一个为所述弹性顶压加载装置、另一个为刚性顶压加载装置，刚性顶压加载装置包括轴向沿左右方向螺旋装配在对应端板本体上的球形调整螺栓，球形调整螺栓的朝向阀组的一端顶压配合传动轴，传动轴沿左右方向滑动穿装在固设于对应端板本体上的导向套中，传动轴的朝向阀组的一端为用于向阀组施加刚性顶压作用力的刚性顶压端。
  6. 根据权利要求1或2所述的压接式功率模块阀段，其中，所述右端板包括右端板支座和通过螺栓联接结构固设在右端板支座上的固定端板，右端板的固定安装部设置在右端板支座上，绝缘拉杆的右端通过与固定端板固连以实现绝缘拉杆与右端板的固连。
  7. 根据权利要求1或2所述的压接式功率模块阀段，其中，所述右端板和活动端板分别包括配置为安装相应夹持装置的端板本体，所述绝缘拉杆的两端分别与两端板本体固连，在端板本体的侧面上设有沿左右方向延伸的卡槽，所述绝缘拉杆的相应端沿左右方向卡装在所述卡槽中，在端板本体上还可拆地固设有配置为将绝缘拉杆压装在所述卡槽中的压板。
  8. 根据权利要求7所述的压接式功率模块阀段，其中，所述右端板和左端板的左端板支座通过沿左右方向延伸的绝缘支撑梁固定装配在一起。
  9. 根据权利要求3所述的压接式功率模块阀段，其中，所述功率模块为IGBT子模块，所述阀组包括沿左右方向依次相间布置的IGBT子模块和模块间绝缘挡块，阀组两端和两夹持装置之间分别设有端部绝缘挡块。
  10. 根据权利要求9所述的压接式功率模块阀段，其中，所述端部绝缘挡块的朝向阀组的一侧面为顶压平面、朝向对应夹持装置的一端设有配置为与对应夹持装置的顶压夹持部吻合插接卡装的定位卡槽。
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