WO2019095258A1 - 一种铝基板耐压测试平台 - Google Patents

一种铝基板耐压测试平台 Download PDF

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Publication number
WO2019095258A1
WO2019095258A1 PCT/CN2017/111557 CN2017111557W WO2019095258A1 WO 2019095258 A1 WO2019095258 A1 WO 2019095258A1 CN 2017111557 W CN2017111557 W CN 2017111557W WO 2019095258 A1 WO2019095258 A1 WO 2019095258A1
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test
plate
base
withstand voltage
aluminum substrate
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PCT/CN2017/111557
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English (en)
French (fr)
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何雪明
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太仓市何氏电路板有限公司
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Priority to PCT/CN2017/111557 priority Critical patent/WO2019095258A1/zh
Publication of WO2019095258A1 publication Critical patent/WO2019095258A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing

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  • the utility model relates to a circuit board testing device, in particular to an aluminum substrate withstand voltage testing platform.
  • the aluminum substrate is undoubtedly one of the effective means to solve the heat dissipation.
  • the aluminum substrate is a metal-based copper clad plate with good heat dissipation function, and is composed of a circuit layer (copper foil), an insulating layer and a metal base layer.
  • the circuit layer is required to have a large current carrying capacity, and the high voltage test for the circuit layer is required.
  • the surface of the power device is loaded with a circuit layer, and the heat generated during operation of the device is conducted to the metal base layer through the insulating layer, and then the heat is transferred by the metal base layer to achieve heat dissipation of the device.
  • the pressure test is performed after the test and forming of the aluminum substrate, the time taken for the detected defective product in the process of processing will inevitably reduce the work efficiency, so in order to avoid this, the withstand voltage test of the aluminum substrate In the material link, it is necessary to carry out the withstand voltage test.
  • the commonly used test method is to slide the probe of the withstand voltage tester back and forth on the tested product to check whether the object to be tested is qualified. During the test, the artificial test probe is required. Keep the plane of the product under test at 60°-70°, keep people and objects 10-20mm, and test only one product at a time. The test efficiency is very low. It is not safe to test the product with the handheld test probe.
  • the object of the present invention is to provide an aluminum substrate withstand voltage test platform, and at the same time realize testing of multiple products, with high test efficiency and good safety.
  • a hand-held probe is required to slide back and forth over the product to be tested to ensure personal safety.
  • an aluminum substrate withstand voltage test platform includes a test stand and a withstand voltage tester, and the test stand includes a base, a bottom plate, a test support plate, an upper pressure plate and a pneumatic pressure a bed, the base is provided with a first start button, a reset button, an emergency stop button and a second start button, and a support column is arranged between the base and the pneumatic press, and the bottom of the pneumatic press and the upper press plate pass through the hollow
  • the test support plate is disposed directly under the upper pressure plate, the bottom of the upper pressure plate is provided with a negative electrode plate, the test support plate is provided with a positioning pin and a positive test pin, and the bottom of the test support plate is provided with a pillar, The pillar is fixedly connected to the bottom plate disposed above the base.
  • the negative electrode of the withstand voltage tester is electrically connected to the negative electrode plate at the bottom of the upper platen by a wire
  • the positive electrode of the withstand voltage tester is electrically connected to the positive electrode test pin through a wire.
  • At least six sets of positioning pins are disposed above the base, the positive test pins are retractable test pins, and the bottom of the telescopic test pins is conical.
  • a round hole is arranged above the aluminum substrate to be tested, and the test pin can realize positioning of a plurality of aluminum substrates, complete the withstand voltage test on the plurality of aluminum substrates, and improve the test efficiency.
  • test support is one of a fiberglass board or an acrylic board.
  • the fiberglass board and the acrylic sheet are evenly insulated to ensure the safety of the staff when placing and removing the aluminum substrate. At the same time, it has good mechanical properties and dielectric properties, good heat resistance and moisture resistance, and service life. long.
  • the area of the bottom plate is larger than the area of the test support.
  • an insulating protective layer is disposed on the mesa and the hollow pillar of the base.
  • the insulating cover is designed to isolate the base from the base.
  • An aluminum substrate withstand voltage test platform directly places a plurality of aluminum substrates on a test stand for testing, and simultaneously tests a plurality of sets of aluminum substrates, and the operator can manually place a plurality of sets of aluminum substrates. After being placed, press the test button to start the work of the pneumatic press, which not only reduces the labor intensity of the operator, but also ensures the personal safety of the staff and increases the work efficiency.
  • test pin is a retractable test pin, and only when the upper press plate is lowered to the upper side of the aluminum substrate, the telescopic test pin is in contact with the bottom plate, and the test pin bottom is tested. The contact between the end and the bottom plate makes the test pin become the negative contact, thereby simultaneously pressing the plurality of sets of aluminum substrates.
  • Figure 1 is a schematic view of the structure of the present invention.
  • An aluminum substrate withstand voltage test platform as shown in FIG. 1 includes a test stand 1 and a withstand voltage tester 2, the test stand 1 includes a base 11, a bottom plate 12, a test support plate 13, a support 14, and an upper pressure plate 15,
  • the hollow column 16 and the pneumatic press 17 are provided with a first start button 111, a reset button 112, an emergency stop button 113 and a second start button 114.
  • the base 11 is provided between the base 11 and the pneumatic press 17 Support column 17, below the pneumatic press 17 and the upper platen 15
  • the test column 13 is disposed directly below the upper platen 14, the test support plate 13 is disposed directly below the upper platen 14, and the bottom of the upper platen is provided with a negative plate on which the test plate 13 is disposed.
  • a positioning pin 19 and a positive test pin are provided.
  • the bottom of the test strut 13 is provided with a post (15) which is fixedly connected to the bottom plate 12 disposed above the base 11.
  • the negative electrode of the withstand voltage tester 2 in this embodiment passes through the wire and the bottom of the upper platen 15
  • the negative electrode plate is electrically connected, and the positive electrode of the withstand voltage tester is electrically connected to the positive electrode test pin 12 through a wire.
  • At least six sets of positioning pins 19 are disposed above the base 11 , the positive test pins are retractable test pins, and the bottom of the telescopic test pins is conical.
  • the test support plate 13 in this embodiment is a fiberglass board.
  • the area of the bottom plate 12 in this embodiment is larger than the area of the test support plate 13.
  • the mesa and the hollow column of the base 11 are provided with an insulation protection layer.
  • the pneumatic press 17 drives the upper pressing plate 15 to move downward along the hollow column 16 until the upper pressing plate 15 is pressed over the aluminum substrate, and the test on the test plate 13 is tested.
  • the needle 19 is compressed, and the bottom end of the test pin 19 is in contact with the bottom plate 12 to achieve pressurization of the product;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

一种铝基板耐压测试平台，包括测试架（1）和耐压测试仪（2），测试架（1）包括底座（11）、底板（12）、测试支板（13）、上压板（15）和气动压床（17），底座（11）上设有第一启动按钮（111）、复位按钮（112）、急停按钮（113）和第二启动按钮（114），底座（11）与气动压床（17）之间设有支撑柱（18），气动压床（17）下方与上压板（15）通过空心立柱（16）连接，测试支板（13）设置在上压板（14）正下方，测试支板（13）上设有测试针，测试支板（13）底部设有支柱（15），支柱（15）与设置在底座（11）上方的底板（12）固定连接。本测试平台能够同时实现多个产品的测试，测试效率高，安全性好，不需要手持探头在被测产品上来回滑动，保证人身安全。

Description

一种铝基板耐压测试平台 技术领域
本实用新型涉及电路板测试装置，具体是铝基板耐压测试平台。
背景技术
热量是LED和其它硅胶累半导体的大敌。随着电子工业的飞速发展，电子产品的体积越来越小，功率密度越来越大，如何寻求散热及结构设计的最佳方法，成为当今电子工业设计的一个巨大挑战。铝基板无疑是解决散热的有效手段之一。铝基板是一种具有良好散热功能的金属基覆铜板，由电路层(铜箔)、绝缘层和金属基层组成，其中电路层，要求具有很大的载流能力，针对电路层的高压测试，又称为铝基板的工作原理，功率器件表面贴装载电路层，器件运行时所产生的热量通过绝缘层传导到金属基层，然后由金属基层将热量传递出去，从而实现对器件的散热。如果铝基板的测试加工成型之后再做耐压测试，那么检测出的不合格产品在加工的过程中占用的时间必然会降低工作效率，因此为避免这一情况的发生，铝基板的耐压测试在材料环节就需要进行耐压测试，目前常用的测试方式是将耐压测试仪的探头在被测产品上来回滑动逐点测试，查看被测物体是否合格，测试过程中，需要人为控制测试探头与被测产品的平面保持60°-70°左右，人与物体保持10-20mm，而且一次只能对一个产品进行测试，测试效率很低，手持测试探头对产品进行测试不安全。
实用新型内容
实用新型目的：针对上述现有技术中的存在的问题和不足，本实用新型的目的是提供一种铝基板耐压测试平台，同时实现多个产品的测试，测试效率高，安全性好，不需要手持探头在被测产品上来回滑动，保证人身安全。
技术方案：为达到上述目的，本实用新型所述的一种铝基板耐压测试平台，包括测试架和耐压测试仪，所述测试架包括底座、底板、测试支板、上压板和气动压床，所述底座上设有第一启动按钮、复位按钮、急停按钮和第二启动按钮，所述底座与气动压床之间设有支撑柱，所述气动压床下方与上压板通过空心立柱连接，所述测试支板设置在上压板正下方，所述上压板底部设有负极板，所述测试支板上设有定位针和正极测试针，测试支板底部设有支柱，所述支柱与设置在底座上方的底板固定连接。
进一步地，所述耐压测试仪的负极通过导线与上压板底部的负极板电连接，所述耐压测试仪的正极通过导线与正极测试针电连接。这种设计通过对上压板和底座加压，将铝基板放置到测试支板上方，上压板下降到铝基板上方发生挤压，测试针被压缩，测试针底端与 底板接触使得测试针成为负极触点，进而同时实现对多组铝基板加压。
进一步地，所述底座上方设有至少6组定位针，所述正极测试针为可伸缩型测试针，所述可伸缩型测试针底部为圆锥形。待测铝基板上方设有圆孔，测试针可以实现对多块铝基板进行定位，完成对多块铝基板的耐压测试，提高测试效率。
进一步地，所述测试支板为玻璃纤维板或压克力板中的一种。玻璃纤维板和压克力板均匀绝缘材质，保证工作人员放置和取下铝基板时的人身安全，同时还具有较好的机械性能和介电性能，较好的耐热性和耐潮性，使用寿命长。
进一步地，所述底板的面积大于测试支板的面积。
进一步地，所述底座的台面和空心立柱上均设有绝缘保护层。绝缘保护层的设计将底板与底座隔离。
上述技术方案可以看出，本实用新型的有益效果为：
(1)本实用新型所述的一种铝基板耐压测试平台，直接将多块铝基板放置到测试支架上进行测试，同时对多组铝基板进行测试，操作人员可手动放置多组铝基板，放置好后，按下测试按钮使气动压床开始工作，既降低了操作人员的劳动强度，保证工作人员的人身安全，又增加了工作效率。
(2)本实用新型所述的一种铝基板耐压测试平台，测试针为可伸缩测试针，只有当上压板下降到铝基板上方发生挤压时，伸缩测试针与底板接触，测试针底端与底板接触使得测试针成为负极触点，进而同时实现对多组铝基板加压。
附图说明
图1为本实用新型的结构示意图。
图中：1-测试架、2-耐压测试仪、11-底座、12-底板、13-测试支板、14-支柱、15-上压板、16-空心立柱、17-气动压床、18-支撑柱、19-测试针、111-第一启动按钮、112-复位按钮、113-急停按钮、114-第二启动按钮。
具体实施方式
下面结合附图和具体实施例，进一步阐明本实用新型。
实施例
如图1所示的一种铝基板耐压测试平台，包括测试架1和耐压测试仪2，所述测试架1包括底座11、底板12、测试支板13、支柱14、上压板15、空心立柱16和气动压床17，所述底座11上设有第一启动按钮111、复位按钮112、急停按钮113和第二启动按钮114，所述底座11与气动压床17之间设有支撑柱17，所述气动压床17下方与上压板15通过空 心立柱16连接，所述测试支板13设置在上压板14正下方，所述测试支板13设置在上压板14正下方，所述上压板底部设有负极板，所述测试支板13上设有定位针19和正极测试针，测试支板13底部设有支柱(15，所述支柱14与设置在底座11上方的底板12固定连接。
本实施例中所述耐压测试仪2的负极通过导线与上压板15底部
的负极板电连接，所述耐压测试仪的正极通过导线与正极测试针12电连接。
本实施例中所述底座11上方设有至少6组定位针19，所述正极测试针为可伸缩型测试针，所述可伸缩型测试针底部为圆锥形。
本实施例中所述测试支板13为玻璃纤维板。
本实施例中所述底板12的面积大于测试支板13的面积。
本实施例中所述底座11的台面和空心立柱上均设有绝缘保护层。
本实施例中所述的一种铝基板耐压测试平台的具体工作方法如下：
1)准备好待测产品，将耐压测试仪2的正极和负极分别与测试架1的上压板15和底板12通过导线连接施加电压；
2)将耐压测试仪2开关打开，选定测试电压值，设定耐压测试仪2的电流量，调节耐压测试所需的时间；
3)确定电压指示是否为“0”，然后将铝基板依次放置到测试支板13的测试针19上方；
4)同时按压第一启动按钮111和第二启动按钮114，气动压床17带动上压板15沿着空心立柱16向下运动，直至上压板15压在铝基板上方，测试支板13上的测试针19被压缩，测试针19底端与底板12接触，实现对产品的加压；
5)取下被测产品前按下复位按钮112，在保证高压输出“0”及在“复位”状态，取下被测产品；
6)观察被测铝基板是否被击穿、烧焦或变色等现象，如果有其中一种情况即表示产品不合格。
实施例仅用于说明本实用新型而不用于限制本实用新型的范围，在阅读了本实用新型之后，本领域技术人员对本实用新型的各种等价均落于本申请所附权利要求所限定的范围。

Claims (6)

  1. 一种铝基板耐压测试平台，包括测试架(1)和耐压测试仪(2)，其特征在于：所述测试架(1)包括底座(11)、底板(12)、测试支板(13)、支柱(14)、上压板(15)、空心立柱(16)和气动压床(17)，所述底座(11)上设有第一启动按钮(111)、复位按钮(112)、急停按钮(113)和第二启动按钮(114)，所述底座(11)与气动压床(17)之间设有支撑柱(18)，所述气动压床(17)下方与上压板(15)通过空心立柱(16)连接，所述测试支板(13)设置在上压板(14)正下方，所述上压板底部设有负极板，所述测试支板(13)上设有定位针(19)和正极测试针，测试支板(13)底部设有支柱(15)，所述支柱(14)与设置在底座(11)上方的底板(12)固定连接。
  2. 根据权利要求1所述的一种铝基板耐压测试平台，其特征在于：所述耐压测试仪(2)的负极通过导线与上压板(15)底部的负极板电连接，所述耐压测试仪的正极通过导线与正极测试针(12)电连接。
  3. 根据权利要求1所述的一种铝基板耐压测试平台，其特征在于：所述底座(11)上方设有至少6组定位针(19)，所述正极测试针为可伸缩型测试针，所述可伸缩型测试针底部为圆锥形。
  4. 根据权利要求1所述的一种铝基板耐压测试平台，其特征在于：所述测试支板(13)为玻璃纤维板或压克力板中的一种。
  5. 根据权利要求1所述的一种铝基板耐压测试平台，其特征在于：所述底板(12)的面积大于测试支板(13)的面积。
  6. 根据权利要求1所述的一种铝基板耐压测试平台，其特征在于：所述底座(11)的台面和空心立柱上均设有绝缘保护层。
PCT/CN2017/111557 2017-11-17 2017-11-17 一种铝基板耐压测试平台 WO2019095258A1 (zh)

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CN111812470A (zh) * 2020-07-21 2020-10-23 上海恩捷新材料科技有限公司 一种薄膜连续耐电压的测试方法
TWI760897B (zh) * 2019-12-05 2022-04-11 仁寶電腦工業股份有限公司 測試治具及測試方法

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