WO2022041519A1 - 一种车用整流二极管基座及车用整流二极管 - Google Patents

一种车用整流二极管基座及车用整流二极管 Download PDF

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Publication number
WO2022041519A1
WO2022041519A1 PCT/CN2020/131106 CN2020131106W WO2022041519A1 WO 2022041519 A1 WO2022041519 A1 WO 2022041519A1 CN 2020131106 W CN2020131106 W CN 2020131106W WO 2022041519 A1 WO2022041519 A1 WO 2022041519A1
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Prior art keywords
base
rectifier diode
base body
vehicle
outer edge
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PCT/CN2020/131106
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English (en)
French (fr)
Inventor
宋国华
曹榆
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江苏英达富电子科技有限公司
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Publication of WO2022041519A1 publication Critical patent/WO2022041519A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/02—Containers; Seals
    • H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/02—Containers; Seals
    • H01L23/10—Containers; Seals characterised by the material or arrangement of seals between parts, e.g. between cap and base of the container or between leads and walls of the container
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
    • H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
    • H01L29/861—Diodes

Definitions

  • the invention relates to the technical field of vehicle electronic devices, in particular to a vehicle rectifier diode base and a vehicle rectifier diode.
  • the current vehicle generators are all alternators.
  • the battery is the energy source of all vehicle transportation tools, especially when the vehicle engine is started, its current is quite high, so during normal operation, the generator must be used to store energy in the battery at any time, so that all the vehicles in the vehicle transportation tool can be stored.
  • the electrical appliances can operate normally and perform their normal functions, and among them, the rectifying power element (or diode rectifier) is usually arranged in the generator to rectify the alternating current into direct current and transmit it to various electrical devices in the automobile system, such as: audio, Headlights, etc., as well as the work of charging the battery, so as to supply the power for its continuous rotation, and at the same time, the car can not use the power of the battery while driving, and by maintaining the sufficient power of the battery for the next start.
  • alternators are usually configured with 6 to 8 rectified power elements.
  • the purpose of the present invention is to provide a vehicle rectifier diode base and a vehicle rectifier diode, which solve the technical problems of inconvenient use and poor finished product compactness of the welding type vehicle rectifier diode in the prior art.
  • the embodiment of the present application discloses a vehicle rectifier diode base, which includes an integrally formed base body, and a gripping portion is provided on the outer edge of the base body.
  • the embodiment of the present application improves the base body, and changes the existing base body structure, so that when it is wrapped, the outer part is wrapped; at the same time, the grip part and the plastic sealing layer cooperate with each other, which can improve the stability of the subsequent wrapping of the plastic sealing layer.
  • the present invention can also do following improvement:
  • the base body is divided into an upper base portion and a base lower portion, the base upper portion is located above the base lower portion, and the cross-sectional area of the base upper portion is smaller than the cross-sectional area of the base lower portion.
  • the shape of the upper part of the base and the lower part of the base are the same, and the outer circumference of the upper part of the base is circular, square or hexagonal.
  • the beneficial effect of this step is that it can be designed according to customer needs.
  • the gripping portion is located at the outer edge of the upper portion of the base, and the beneficial effect of this step is that the gripping portion grips the subsequent plastic encapsulation layer.
  • the gripping portion is an annular protrusion, and the annular protrusion is located on the upper outer edge of the base.
  • the gripping portion is a plurality of bumps arranged at intervals, and the bumps are arranged at intervals on the outer edge of the upper portion of the base.
  • the embodiment of the present application also discloses a vehicle rectifier diode, comprising:
  • the lead wire is arranged above the base body
  • the die is disposed between the lead and the base body;
  • the plastic sealing layer is wrapped around the bottom of the lead and the outer edge of the base.
  • the plastic sealing layer is a rigid plastic sealing layer.
  • the base body is designed in the embodiment of the present application, and the gripping part of the base body is used to improve the stability of the connection between the base body and the subsequent plastic sealing layer; at the same time, the structure of the base body can also improve the heat dissipation.
  • the plastic sealing layer of the embodiments of the present application is processed by plastic sealing, which is convenient for processing while improving the compactness.
  • FIG. 1 is a schematic structural diagram of a vehicle rectifier diode base according to a specific embodiment of the present invention
  • FIG. 2 is another schematic structural diagram of a vehicle rectifier diode base according to a specific embodiment of the present invention.
  • FIG. 3 is an exploded schematic diagram of a vehicle rectifier diode according to a specific embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a vehicle rectifier diode according to a specific embodiment of the present invention.
  • 1-base body 2-grip part; 3-lead; 4-die; 5-plastic encapsulation layer;
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements.
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements.
  • the vehicle rectifier diode base and the vehicle rectifier diode provided by the embodiments of the present application solve the technical problems of inconvenient processing and poor finished product compactness of the vehicle rectifier diode in the prior art.
  • the base is designed, and the gripping portion cooperates with the rigid plastic sealing layer wrapped on the outside to improve the compactness and the stability of the finished product; the finished product of the embodiment of the present application is easy to process and dissipates heat. Good performance.
  • this embodiment provides a vehicle rectifier diode base, which includes an integrally formed base body 1 , and a gripping portion 2 is provided on the outer edge of the base body 1 ; the embodiment of the present application The gripping part 2 in the middle cooperates with the plastic sealing layer wrapped by the outer edge to fix the plastic sealing layer, thereby improving the stability of the finished product.
  • the base body 1 is divided into a base upper part 101 and a base lower part 102 , the base upper part 101 is located above the base lower part 102 , and the cross-sectional area of the base upper part 101 is smaller than that of the base The cross-sectional area of the lower part 102; in the embodiment of the present application, the base body 1 is divided into two parts, which is convenient for subsequent connection and processing.
  • the upper base 101 and the lower base 102 have the same shape, and the outer circumference of the upper base 101 is circular, square or hexagonal, which can be made into different shapes according to customer requirements.
  • the gripping part 2 is located at the outer edge of the upper part 101 of the base.
  • the upper part 101 of the base in the embodiment of the present application is subsequently wrapped and connected with the plastic sealing layer, and the gripping part 2 can improve the gripping force. Improve the stability of the plastic wrapping.
  • the gripping portion 2 is an annular protrusion 201, and the annular protrusion 201 is located at the outer edge of the upper portion 101 of the base.
  • the longitudinal section of the annular protrusion 201 may be a rectangle, a triangle, or a polygon. , mainly to improve the gripping force and ensure the stability of the plastic sealing layer when it cooperates with the plastic sealing layer in the future. When it is impacted by external force, the product will not be damaged and affect the use.
  • the gripping portion 2 can also be a plurality of bumps 202 arranged at intervals, and the bumps 202 are arranged at intervals on the outer edge of the upper portion 101 of the base.
  • the purpose of the bumps 202 is to ensure the protection of the plastic sealing layer. stability.
  • the embodiment of the present application also discloses a vehicle rectifier diode, comprising:
  • Lead wire 3 the lead wire 3 is arranged above the base body 1;
  • the die 4 is arranged between the lead 3 and the base body 1;
  • the plastic sealing layer 5 is wrapped around the bottom of the lead 3 and the outer edge of the base body 1.
  • the plastic sealing layer 5 in the embodiment of the present application is a thermoplastic material, and the plastic sealing layer is a rigid plastic sealing layer, which can improve the product quality. stability and prolong the service life of the product.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Rectifiers (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)

Abstract

一种车用整流二极管基座及车用整流二极管，车用整流二极管基座，包括一体成型的基座本体（1），基座本体（1）的外缘设置有抓持部（2）；车用整流二极管包括基座、引线（3）、晶粒（4）和塑封层（5），解决了现有焊接型车用整流二极管使用不方便及成品致密性差的技术问题。

Description

一种车用整流二极管基座及车用整流二极管 技术领域
本发明涉及车用电子器件技术领域，尤其涉及一种车用整流二极管基座及车用整流二极管。
背景技术
在现有汽车运输系统中，由于交流发电机之效率及寿命皆远高于直流发电机，因此目前车用发电机均为交流发电机。再者，电瓶乃是一切汽车运输工具的能量来源，尤其是汽车引擎启动时，其电流相当高，因此在正常运转时，必须利用发电机随时对电瓶储能，以使汽车运输工具内的所有电器能正常运作发挥其正常功能，而其中，整流功率元件(或二极管整流器)通常是设置于发电机内，以将交流电整流成直流电并传送至汽车系统中的各种电器装置，如：音响、头灯等，以及对电瓶作充电之工作，藉此供应其持续转动的电力，同时让汽车于行驶间能不使用电瓶之电力，通过维持电瓶充沛的电力，以待下一次的启动。一般而言，交流发电机通常配置有6至8个整流功率元件。
现有的整流功率元件通常采用的是软性白胶包裹制成的成品，加工步骤繁琐，稳定性差，在受到撞击或者外力作用时，易发生损坏。
发明内容
本发明的目的是提供一种车用整流二极管基座及车用整流二极管，解决现有技术中焊接型车用整流二极管使用不方便及成品致密性差的技术问题。
本申请实施例公开了一种车用整流二极管基座，包括一体成型的基座本体，所述基座本体的外缘设置有抓持部。
本申请实施例对基座本体进行改进，改变现有的基座本体结构，使得其包裹时，是外部部分包裹；同时抓持部与塑封层相互配合，能够提高后续塑封层包裹的稳定性。
在上述技术方案的基础上，本发明还可以做如下改进：
进一步地，所述基座本体分为基座上部和基座下部，所述基座上部位于所述基座下部上方，且基座上部的横截面面积小于所述基座下部的横截面面积。
进一步地，所述基座上部和基座下部形状一致，所述基座上部的外周为圆形、方形或者六角形，采用本步的有益效果是可以根据客户的需求进行设计。
进一步地，所述抓持部位于所述基座上部的外缘，采用本步的有益效果是通过抓持部抓紧后续的塑封层。
进一步地，所述抓持部为环形凸起，所述环形凸起位于所述基座上部外缘。
进一步地，所述抓持部为多个间隔设置的凸块，所述凸块间隔设置在所述基座上部外缘。
本申请实施例还公开了一种车用整流二极管，包括：
上述的基座本体；
引线，所述引线设置在所述基座本体上方；
晶粒，所述晶粒设置在所述引线和基座本体之间；
塑封层，所述塑封层包裹于所述引线底部和基座外缘。
其中，所述塑封层为硬性塑封层。
本申请实施例中提供的一个或者多个技术方案，至少具有如下技术效果或者优点：
1.本申请实施例对基座本体进行设计，利用基座本体的抓持部，提高基座本体与后续塑封层连接的稳定性；同时基座本体的结构也能提高散热性。
2.本申请实施例的塑封层是采用塑封的方式加工，在提高致密性的同时，便于进行加工。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面 将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明具体实施例所述的一种车用整流二极管基座的结构示意图；
图2为本发明具体实施例所述的一种车用整流二极管基座的另一结构示意图；
图3为本发明具体实施例所述的一种车用整流二极管的爆炸示意图；
图4为本发明具体实施例所述的一种车用整流二极管的结构示意图；
附图标记：
1-基座本体；2-抓持部；3-引线；4-晶粒；5-塑封层；
101-基座上部；102-基座下部；
201-环形凸起；202-凸块。
具体实施方式
下面将结合附图对本发明技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本发明的技术方案，因此只作为示例，而不能以此来限制本发明的保护范围。
需要注意的是，除非另有说明，本申请使用的技术术语或者科学术语应当为本发明所属领域技术人员所理解的通常意义。
在本申请的描述中，需要理解的是，术语“中心”、“上”、“下”、“顶”、“底”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的限制。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接 相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
本申请实施例提供的一种车用整流二极管基座及车用整流二极管，解决了现有技术中车用整流二极管加工不方便及成品致密性差技术问题。
本申请实施例的总体思路如下：对基座进行设计，通过抓持部与外部包裹的硬性塑封层相互配合，提高致密性，提高成品的稳定性；本申请实施例的成品便于加工，而且散热性能好。
为了更好的理解上述技术方案，下面将结合说明书附图以及具体实施方式对上述技术方案进行详细说明。
实施例
如图1-4所示，本实施例提供一种车用整流二极管基座，包括一体成型的基座本体1，所述基座本体1的外缘设置有抓持部2；本申请实施例中的抓持部2与外缘包裹的塑封层相互配合，对塑封层进行固定，从而提高成品的稳定性。
具体地，所述基座本体1分为基座上部101和基座下部102，所述基座上部101位于所述基座下部102上方，且基座上部101的横截面面积小于所述基座下部102的横截面面积；本申请实施例中基座本体1分成两部分，便于后续进行连接和加工，基座上部101是用于承载晶粒，通过焊接的方式连接。
具体地，所述基座上部101和基座下部102形状一致，所述基座上部101的外周为圆形、方形或者六角形，可以根据客户的需求做成不同的形状。
具体地，所述抓持部2位于所述基座上部101的外缘，本申请实施例中的基座上部101是后续与塑封层进行包裹连接的，而抓持部2可以提高抓力，提高塑封层包裹的稳定性。
具体地，所述抓持部2为环形凸起201，所述环形凸起201位于所述基座上部101外缘，本申请实施例中环形凸起201的纵截面可以是矩形或三角形或者多边形，主要是为了后续与塑封层相互配合时，提高抓力，保证塑封 层的稳定性，在受到外力冲击时，产品不会受到损坏，影响使用。
具体地，所述抓持部2也可以为多个间隔设置的凸块202，所述凸块202间隔设置在所述基座上部101外缘，同样凸块202的目的也是为了保证塑封层的稳定性。
本申请实施例还公开了一种车用整流二极管，包括：
上述的基座本体1；
引线3，所述引线3设置在所述基座本体1上方；
晶粒4，所述晶粒4设置在所述引线3和基座本体1之间；
塑封层5，所述塑封层5包裹于所述引线3底部和基座本体1外缘，本申请实施例中的塑封层5为热塑性材料，而且该塑封层为硬性塑封层，这样能够提高产品的稳定性，延长产品的使用寿命。
本发明的说明书中，说明了大量具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围，其均应涵盖在本发明的权利要求和说明书的范围当中。

Claims (8)

  1. 一种车用整流二极管基座，其特征在于，包括一体成型的基座本体，所述基座本体的外缘设置有抓持部。
  2. 根据权利要求1所述的一种车用整流二极管基座，其特征在于，所述基座本体分为基座上部和基座下部，所述基座上部位于所述基座下部上方，且基座上部的横截面面积小于所述基座下部的横截面面积。
  3. 根据权利要求2所述的一种车用整流二极管基座，其特征在于，所述基座上部和基座下部形状一致，所述基座上部的外周为圆形、方形或者六角形。
  4. 根据权利要求2所述的一种车用整流二极管基座，其特征在于，所述抓持部位于所述基座上部的外缘。
  5. 根据权利要求4所述的一种车用整流二极管基座，其特征在于，所述抓持部为环形凸起，所述环形凸起位于所述基座上部外缘。
  6. 根据权利要求4所述的一种车用整流二极管基座，其特征在于，所述抓持部为多个间隔设置的凸块，所述凸块间隔设置在所述基座上部外缘。
  7. 一种车用整流二极管，其特征在于，包括：
    权利要求1-6任一所述的基座本体；
    引线，所述引线设置在所述基座本体上方；
    晶粒，所述晶粒设置在所述引线和基座本体之间；
    塑封层，所述塑封层包裹于所述引线底部和基座外缘。
  8. 根据权利要求7所述的一种车用整流二极管，其特征在于，所述塑封层为硬性塑封层。
PCT/CN2020/131106 2020-08-28 2020-11-24 一种车用整流二极管基座及车用整流二极管 WO2022041519A1 (zh)

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CN111916401A (zh) * 2020-08-28 2020-11-10 江苏英达富电子科技有限公司 一种车用整流二极管基座及车用整流二极管

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