US4672422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor rectifier unit
Assignee: Semikron GmbH and Co KG
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Filing: 1985-09-24
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Granted: 1987-06-09
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Expires: 2005-09-24
Abstract
Abstract A semiconductor rectifier unit composed of at least two rectifier elements,late-shaped contact elements contacting each rectifier element, components producing spring pressure for clamping the rectifier elements between the contact elements, and a carrier body supporting the rectifier elements, contact elements and clamping components. Each rectifier element is composed of a semiconductor body having contact electrodes on opposite surfaces thereof and two contact members contacting the electrodes and forming a separable stack with the semiconductor body. A body of insulating material surrounds each rectifier element and is interposed between the contact elements to define therewith an enclosure for each rectifier element, and sealing rings form a sealed joint between the body of insulating material and each contact element for sealing the enclosure for each rectifier element. At least one plate-shaped cooling element is associated with, and dimensionally matched to, each rectifier element and is connected to one side of its associated rectifier element. The clamping components include at lest one member located at the side of the cooling element remote from the associated rectifier element for loading each rectifier element with a given contact pressure.
Inventors
- 👤 Winfried Schierz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:23
CPC Classifications
H; H10; H10W; H10W78/00; H10W90/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
264 words
A semocinductor rectifier unit comprising: at least two rectifier elements; plate-shaped contact elements contacting each said rectifier element; means producing spring pressure for clamping each said rectifier element between said contact elements; and a carrier body supporting said at least two rectifier elements, said contact elements and said clamping means, wherein each said rectifier element comprises a semiconductor body having contact electrodes on opposite surfaces thereof and two contact members contacting said electrodes and forming a separable stack with said semiconductor body, said contact members being loosely assembled with said semiconductor body to permit ready disassembly of said contact members from said semiconductor body; said unit further comprising a body of insulating material surrounding each said rectifier element and interposed between said contact elements to define therewith an enclosure for each said rectifier element, in which each said rectifier element is connected between said contact elements, sealing rings associated with said body of insulating material to form a sealed joint between said body of insulating material and each said contact element for sealing said enclosure for each said rectifier element, at least two plate-shaped cooling elements each associated with, and dimensionally matched to, a respective said rectifier element and disposed at one side of its associated rectifier element, and a yieldable bar member connected between said cooling elements; and further wherein said means producing spring pressure comprise a respective pressure contacting device for each said rectifier element located at the side of said cooling element remote from said associated rectifier element for individually loading its associated said rectifier element with a given contact pressure.
Claim 2
Dependent Claim
264 words
A semocinductor rectifier unit comprising: at least two rectifier elements; plate-shaped contact elements contacting each said rectifier element; means producing spring pressure for clamping each said rectifier element between said contact elements; and a carrier body supporting said at least two rectifier elements, said contact elements and said clamping means, wherein each said rectifier element comprises a semiconductor body having contact electrodes on opposite surfaces thereof and two contact members contacting said electrodes and forming a separable stack with said semiconductor body, said contact members being loosely assembled with said semiconductor body to permit ready disassembly of said contact members from said semiconductor body; said unit further comprising a body of insulating material surrounding each said rectifier element and interposed between said contact elements to define therewith an enclosure for each said rectifier element, in which each said rectifier element is connected between said contact elements, sealing rings associated with said body of insulating material to form a sealed joint between said body of insulating material and each said contact element for sealing said enclosure for each said rectifier element, at least two plate-shaped cooling elements each associated with, and dimensionally matched to, a respective said rectifier element and disposed at one side of its associated rectifier element, and a yieldable bar member connected between said cooling elements; and further wherein said means producing spring pressure comprise a respective pressure contacting device for each said rectifier element located at the side of said cooling element remote from said associated rectifier element for individually loading its associated said rectifier element with a given contact pressure.
Claim 3
Dependent Claim
86 words
A rectifier unit as defined in claim 1 wherein: said unit further comprises a cooling body common to all of said rectifier elements and contacting that side of each said rectifier element which is opposite the side at which said associated cooling element is connected, and said body of insulating material is provided with an opening shaped to surround at least one said rectifier element and having opposed end faces each directed toward a respective one of said contact elements which contact said one rectifier element.
Claim 4
Dependent Claim
26 words
A rectifier unit as defined in claim 2 wherein each said end face of said body of insulating material is configured for accommodating a sealing ring.
Claim 5
Dependent Claim
43 words
A rectifier unit as defined in claim 2 wherein said cooling body and said cooling elements are provided with coolant channels for liquid coolant, and said bar is provided with a longitudinal channel for interconnecting said coolant channels provided in said cooling elements.
Claim 6
Dependent Claim
123 words
A rectifier unit as defined in claim 1 wherein: said unit further comprises a cooling body common to all of said rectifier elements and contacting that side of each said rectifier element which is opposite the side at which said associated cooling element is connected; said body of insulating material is plate-shaped and is provided with a through opening shaped to surround at least one said rectifier element and with a plurality of through bores symmetrically arranged relative to the center of said through opening; and said pressure contacting device for said one rectifier element comprises clamping bolts extending through said through bores for fixing said body of insulating material between said contact elements which contact opposite sides of said one rectifier element.
Claim 7
Dependent Claim
132 words
A rectifier unit as defined in claim 1 wherein: each of said plate-shaped cooling elements contacts its associated rectifier; said unit further comprises at least two additional cooling elements each contacting a respective rectifier element at the side thereof opposite the one side of said rectifier element; said body of insulating material is common to all of said rectifier elements and is provided with a plurality of openings each shaped to surround a respective rectifier element and with groups of through bores, each group being symmetrically arranged relative to the center of a respective one of said openings; and each said pressure contacting device comprises clamping bolts extending through said through bores for fixing said body of insulating material between said contact elements which contact opposite sides of each said rectifier element.
Claim 8
Dependent Claim
28 words
A rectifier unit as defined in claim 1 wherein said contact elements are current conductor members at least one of which is securely connected with said cooling element.
Claim 9
Dependent Claim
57 words
A rectifier unit as defined in claim 1 wherein each said cooling element constitutes one of said contact elements for one said rectifier element, and further comprising a cooling body common to all said rectifier elements and constituting one said contact element for each said rectifier element, and current conductor members permenently connected to said contact elements.
Claim 10
Dependent Claim
62 words
A rectifier unit as defined in claim 1 wherein each of said cooling elements constitutes one of said contact elements for a respective one of said rectifier elements and all of said cooling elements are disposed at the same side of said rectifier elements for conducting current, and further comprising a single current conductor member connected to all of said cooling elements.
Claim 11
Dependent Claim
62 words
A rectifier unit as defined in claim 1 wherein all of said cooling elements are disposed at the same side of said rectifier elements, and said contact elements include one such element which is common to all of said rectifier elements, is disposed at the same side of said rectifier elements as said cooling elements, and is secured to said cooling elements.
Claim 12
Dependent Claim
20 words
A rectifier unit as defined in claim 1 wherein all of said rectifier elements are positioned in a common plane.
Claim 13
Dependent Claim
21 words
A rectifier unit as defined in claim 1 wherein each said rectifier element is a controllable rectifier having a control electrode.
Claim 14
Dependent Claim
68 words
A rectifier unit as defined in claim 12 wherein said control electrode of each said rectifier element is located at the center of one surface of said associated semiconductor body, and said contact member contacting said contact electrode at said one surface of said semiconductor body and contact element contacting that said contact member are provided with openings for the passage of a conductor for said control electrode.
Claim 15
Dependent Claim
51 words
A rectifier unit as defined in claim 1 wherein said pressure contacting device for each said rectifier element comprises at least one Belleville spring, a pressure plate bearing against said spring and clamping bolts coupled to said pressure plate for causing said sprinq to apply clamping pressure to said rectifier element.
Claim 16
Dependent Claim
57 words
A rectifier unit as defined in claim 1 wherein said contact elements, said cooling elements and said cooling body are provided with through bores each lined with a tube of insulating material or with a plastic coating so as to provide an insulated passage, and said pressure contacting devices comprise clamping bolts passing through said insulated passages.
Claim 17
Dependent Claim
59 words
A rectifier unit as defined in claim 1 wherein: said carrier body has the form of an angle profile provided with an arm; said rectifier elements, said contact elements and said cooling elements form an assembly carried by said arm of said carrier body; and said pressure contacting devices comprise clamping bolts firmly connecting said assembly with said arm.
Claim 18
Dependent Claim
119 words
A rectifier unit as defined in claim 1 wherein each said pressure contacting device comprises: a pressure applying member; spring means interposed between said pressure applying member and the side of said cooling element which is remote from said associated rectifier means, said spring means having a center axis which is axially centered with respect to said enclosure for said associated rectifier element; and a plurality of clamping elements distributed symmetrically around said spring means and operatively coupled to said pressure applying member, each said clamping element being individually adjustable for applying to said spring means a clamping force which is applied to said spring means at a location laterally offset from said center axis of said spring means.
Claim 19
Dependent Claim
49 words
A rectifier unit as defined in claim 17 wherein each said clamping element comprises a clamping bolt connected to said carrier body for clamping said spring means, said associated rectifier element and said contact elements contacting said associated rectifier element between said pressure applying member and said carrier body.
Claim 20
Dependent Claim
42 words
A rectifier unit as defined in claim 18 wherein said body of insulating material is provided with through bores through which said clamping bolts pass for positioning said body of insulating material relative to said carrier body and said pressure applying member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |