CN102522353A - Partial discharge test device and method for ceramic liner - Google Patents
Partial discharge test device and method for ceramic liner Download PDFInfo
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- CN102522353A CN102522353A CN2012100024168A CN201210002416A CN102522353A CN 102522353 A CN102522353 A CN 102522353A CN 2012100024168 A CN2012100024168 A CN 2012100024168A CN 201210002416 A CN201210002416 A CN 201210002416A CN 102522353 A CN102522353 A CN 102522353A
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- lining plate
- ceramic lining
- extraction electrode
- ceramic liner
- partial discharge
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Abstract
The invention discloses a partial discharge test device and a partial discharge test method for a ceramic liner. The ceramic liner is sealed in a nonmetallic shell, and insulating cement is filled into the nonmetallic shell to keep the ceramic liner insulated from an ambient environment. A metallic layer is covered on each of the two surfaces of the ceramic liner, and is extended out of the nonmetallic shell through an extraction electrode. Voltage is loaded to the ceramic liner through the extraction electrodes to perform a partial discharge test on the ceramic liner. By the device, test voltage can be directly loaded to the ceramic liner, and the accurate insulating property data of the ceramic liner can be obtained; and moreover, the partial discharge test in the ceramic liner can be performed before a power insulated gate bipolar transistor (IGBT) module is packaged, so that the insulating quality of the ceramic liner is ensured, and the insulating quality of the power IGBT module is further improved.
Description
Technical field
The application relates to technical field of semiconductors, particularly relates to the partial discharge testing apparatus and the method for ceramic lining plate.
Background technology
At power IGBT (Insulated Gate Bipolar Transistor); Insulated gate bipolar transistor) in the module package process; The insulation property of ceramic lining plate play a part very crucial to the reliable and stable operation of IGBT module; Therefore, the insulation property data of acquisition ceramic lining plate are most important.
At present; The insulation property of power IGBT module both domestic and external are normally tested the insulation property data that the obtain insulation property data as ceramic lining plate through power IGBT module being carried out partial discharge; But in this test mode, test voltage is not on the direct loading ceramic lining plate; Therefore, the partial discharge of power IGBT module is tested the insulation property that the insulation property data that obtain can not accurately reflect ceramic lining plate.
Summary of the invention
For solving the problems of the technologies described above, the application embodiment provides a kind of partial discharge testing apparatus and method of ceramic lining plate, and to obtain the insulation property parameter of ceramic lining plate accurately, technical scheme is following:
The present invention provides a kind of ceramic lining plate partial discharge testing apparatus, comprising: non-metal shell, insulating cement, ceramic lining plate and extraction electrode, wherein,
Said ceramic lining plate is arranged in the inner chamber of said non-metal shell formation, and said ceramic lining plate two sides is coated with metal level;
Said insulating cement is poured in the inner chamber that said non-metal shell forms;
Said extraction electrode is electrically connected with said metal level, and extends to outside the said non-metal shell, is used for to said ceramic lining plate on-load voltage signal.
Preferably, also comprise: be arranged on the said non-metal shell inwall, be used to support the supporter of said ceramic lining plate.
Preferably, the material of said metal level is copper or aluminium.
Preferably, the material of said extraction electrode is copper or aluminium.
Preferably, extraction electrode is connected on the said metal level through the mode of welding or ultrasonic bonding.
Preferably, said extraction electrode comprises first extraction electrode and second extraction electrode, and wherein, said first extraction electrode is electrically connected with the metal level of said ceramic lining plate one side, and said second extraction electrode is electrically connected with the metal level of said ceramic lining plate another side.
The present invention also provides a kind of ceramic lining plate local discharge measuring method, comprising:
Said ceramic lining plate is sealed in the inner chamber that non-metal shell forms, and the two sides of said ceramic lining plate is coated with metal level, and said metal level extends said non-metal shell through extraction electrode;
In the inner chamber that said non-metal shell forms, pour into insulating cement;
To said extraction electrode energising.
Technical scheme by above the application embodiment provides is visible, in the partial discharge testing apparatus and method of said ceramic lining plate, ceramic lining plate is sealed in the non-metal shell; And in said non-metal shell, pour into insulating cement; Make said ceramic lining plate and surrounding environment keep insulation, the two sides of said ceramic lining plate all is coated with metal level, and said metal level extends said non-metal shell through extraction electrode; Through extraction electrode to said ceramic lining plate on-load voltage; Ceramic lining plate is carried out partial discharge test because this device can directly be loaded into test voltage on the said ceramic lining plate, can access ceramic lining plate accurate insulation property data and; Utilize this device can be before power IGBT module package; Ceramic lining plate is carried out the partial discharge test, thereby guaranteed the insulation quality of ceramic lining plate, and then improved the insulation quality of power IGBT module.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the partial discharge testing apparatus of a kind of ceramic lining plate of the application embodiment;
Fig. 2 is the structural representation of the partial discharge testing apparatus of the another kind of ceramic lining plate of the application embodiment;
Fig. 3 is the structural representation of the application embodiment ceramic lining plate partial discharge testing apparatus and test circuit;
The schematic flow sheet of the local discharge measuring method of a kind of ceramic lining plate that Fig. 4 provides for the application embodiment.
Embodiment
In order to make those skilled in the art person understand the technical scheme among the application better; To combine the accompanying drawing among the application embodiment below; Technical scheme among the application embodiment is carried out clear, intactly description; Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
See also Fig. 1, show the structural representation of the partial discharge testing apparatus of a kind of ceramic lining plate of the application embodiment, this device comprises: ceramic lining plate 100, non-metal shell 200, insulating cement 300, extraction electrode 400.
Said ceramic lining plate 100 is arranged in the inner chamber of non-metal shell 200 formation; Insulating cement 300 is filled in the inner chamber of said non-metal shell 200 formation; Said insulating cement 300 is full of in the inner chamber of said non-metal shell 200; The effect of said insulating cement 300 is, guarantees that ceramic lining plate 100 and surrounding environment keep insulation.
The two sides of said ceramic lining plate 100 is coated with metal level 110; Extraction electrode 400 is electrically connected with said metal level; And extraction electrode 400 extends outside the said non-metal shell 200; Be used for to said ceramic lining plate on-load voltage, ceramic lining plate 100 is carried out the partial discharge test, the material of said metal level 110 is copper or aluminium.
Concrete, said extraction electrode comprises first extraction electrode 410, second extraction electrode 420, wherein,
Said first extraction electrode 410 can be connected with the metal level 110 of said ceramic lining plate 100 1 sides through welding or ultrasonic bonding mode;
Said second extraction electrode 420 can be connected with the metal level 110 of said ceramic lining plate 100 opposite sides through welding or ultrasonic bonding mode.
The material of said first extraction pole 410 and said second extraction pole 420 is copper or aluminium.
Preferably; See also Fig. 2; Show the structural representation of the partial discharge testing apparatus of another kind of ceramic lining plate, this device also comprises supporter 500, and this supporter 500 is arranged on said non-metal shell 200 inwalls; Be used to support said ceramic lining plate 100, guarantee that ceramic lining plate 100 can be stablized to be arranged in the said non-metal shell 200.Guarantee that this ceramic lining plate can stably be positioned at the inner assigned address of non-metal shell.
Concrete, in conjunction with Fig. 3, introduce the partial discharge test process of ceramic lining plate in detail:
As shown in Figure 3; Test circuit 600 is electrically connected with the partial discharge testing apparatus of above-mentioned ceramic lining plate; Said test circuit 600 provides test voltage for said ceramic lining plate 100; And measure said ceramic lining plate 100 under said test voltage, the quantity of electric charge of collecting at the appointed time, and the quantity of electric charge of the said ceramic lining plate 100 that will record is as the insulation property parameter of this ceramic lining plate 100.
According to different standards, for ceramic lining plate loads different test voltages, measure the quantity of electric charge that this moment, ceramic lining plate produced, when the said quantity of electric charge that records is not more than corresponding preset value, think that then these ceramic lining plate insulation property satisfy the insulation quality requirement.
The ceramic lining plate partial discharge testing apparatus that present embodiment provides is sealed in ceramic lining plate in the non-metal shell, and in said non-metal shell, pours into insulating cement; Make said ceramic lining plate and surrounding environment keep insulation, the two sides of said ceramic lining plate all is coated with metal level, and said metal level extends said non-metal shell through extraction electrode; Through extraction electrode to said ceramic lining plate on-load voltage; Ceramic lining plate is carried out partial discharge test because this device can directly be loaded into test voltage on the said ceramic lining plate, can access ceramic lining plate accurately the Insulation test data and; Utilize this device can be before power IGBT module package; Ceramic lining plate is carried out the partial discharge test, thereby guaranteed the insulation quality of ceramic lining plate, and then improved the insulation quality of power IGBT module.
Corresponding to above-mentioned ceramic lining plate partial discharge testing apparatus embodiment, the present invention also provides a kind of ceramic lining plate local discharge measuring method.
See also Fig. 4, show the schematic flow sheet of said ceramic lining plate local discharge measuring method, this method comprises:
S101 is sealed in said ceramic lining plate in the inner chamber that non-metal shell forms, and the two sides of said ceramic lining plate is coated with metal level, and said metal level extends said non-metal shell through extraction electrode.
The material of said metal level specifically can be copper or aluminium, and the material of said extraction electrode also can be copper or aluminium, and said extraction electrode can be connected with said metal level through welding or ultrasonic bonding mode.
S102 pours into insulating cement in the inner chamber that said non-metal shell forms.
The effect of said insulating cement is to guarantee that ceramic lining plate 100 and surrounding environment keep insulation, thereby guarantees the accuracy of ceramic lining plate partial discharge test data.
S103 is to said extraction electrode energising.
Concrete, for the ceramic lining plate of unlike material and the requirement of different insulative standard, can load different voltages with different, thereby obtain the insulation property data of ceramic lining plate ceramic lining plate.
The ceramic lining plate local discharge measuring method that present embodiment provides is sealed in ceramic lining plate in the non-metal shell, and in said non-metal shell, pours into insulating cement; Make said ceramic lining plate and surrounding environment keep insulation, the two sides of said ceramic lining plate all is coated with metal level, and said metal level extends said non-metal shell through extraction electrode; Through extraction electrode to said ceramic lining plate on-load voltage; Ceramic lining plate is carried out partial discharge test because this method of testing can directly be loaded into test voltage on the said ceramic lining plate, can access ceramic lining plate accurate Insulation test data and; This method of testing can be before power IGBT module package; Ceramic lining plate is carried out the partial discharge test, thereby guaranteed the insulation quality of ceramic lining plate, and then improved the insulation quality of power IGBT module.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is the difference with other embodiment.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
Need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.
The above only is the application's a embodiment; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the application's protection range.
Claims (7)
1. a ceramic lining plate partial discharge testing apparatus is characterized in that, comprising: non-metal shell, insulating cement, ceramic lining plate and extraction electrode, wherein,
Said ceramic lining plate is arranged in the inner chamber of said non-metal shell formation, and said ceramic lining plate two sides is coated with metal level;
Said insulating cement is poured in the inner chamber that said non-metal shell forms;
Said extraction electrode is electrically connected with said metal level, and extends to outside the said non-metal shell, is used for to said ceramic lining plate on-load voltage signal.
2. device according to claim 1 is characterized in that, also comprises: be arranged on the said non-metal shell inwall, be used to support the supporter of said ceramic lining plate.
3. device according to claim 1 is characterized in that, the material of said metal level is copper or aluminium.
4. device according to claim 1 is characterized in that, the material of said extraction electrode is copper or aluminium.
5. according to claim 1 or 4 described devices, it is characterized in that extraction electrode is connected on the said metal level through the mode of welding or ultrasonic bonding.
6. according to claim 1 or 4 described devices; It is characterized in that; Said extraction electrode comprises first extraction electrode and second extraction electrode; Wherein, said first extraction electrode is electrically connected with the metal level of said ceramic lining plate one side, and said second extraction electrode is electrically connected with the metal level of said ceramic lining plate another side.
7. a ceramic lining plate local discharge measuring method is characterized in that, comprising:
Said ceramic lining plate is sealed in the inner chamber that non-metal shell forms, and the two sides of said ceramic lining plate is coated with metal level, and said metal level extends said non-metal shell through extraction electrode;
In the inner chamber that said non-metal shell forms, pour into insulating cement;
To said extraction electrode energising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100024168A CN102522353A (en) | 2012-01-05 | 2012-01-05 | Partial discharge test device and method for ceramic liner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100024168A CN102522353A (en) | 2012-01-05 | 2012-01-05 | Partial discharge test device and method for ceramic liner |
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| CN102522353A true CN102522353A (en) | 2012-06-27 |
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| CN2012100024168A Pending CN102522353A (en) | 2012-01-05 | 2012-01-05 | Partial discharge test device and method for ceramic liner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749569A (en) * | 2012-07-23 | 2012-10-24 | 西安永电电气有限责任公司 | Method for detecting early failure of IGBT (Insulated Gate Bipolar Transistor) module |
| CN113376484A (en) * | 2021-06-10 | 2021-09-10 | 上海富乐华半导体科技有限公司 | Partial discharge test method for double-sided copper-clad ceramic substrate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629476U (en) * | 1979-08-13 | 1981-03-20 | ||
| JPS6234076A (en) * | 1985-08-07 | 1987-02-14 | Hitachi Cable Ltd | Method for measuring dielectric breakdown of sheet like insulator |
| JPH05229059A (en) * | 1992-02-24 | 1993-09-07 | Hitachi Chem Co Ltd | Metal clad laminated plate |
-
2012
- 2012-01-05 CN CN2012100024168A patent/CN102522353A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629476U (en) * | 1979-08-13 | 1981-03-20 | ||
| JPS6234076A (en) * | 1985-08-07 | 1987-02-14 | Hitachi Cable Ltd | Method for measuring dielectric breakdown of sheet like insulator |
| JPH05229059A (en) * | 1992-02-24 | 1993-09-07 | Hitachi Chem Co Ltd | Metal clad laminated plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749569A (en) * | 2012-07-23 | 2012-10-24 | 西安永电电气有限责任公司 | Method for detecting early failure of IGBT (Insulated Gate Bipolar Transistor) module |
| CN113376484A (en) * | 2021-06-10 | 2021-09-10 | 上海富乐华半导体科技有限公司 | Partial discharge test method for double-sided copper-clad ceramic substrate |
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Application publication date: 20120627 |