Rectifier apparatus with improved heat sink and diode mounting
AssigneeRobert Bosch GmbH
InventorsPeter Lack, Stefan Renner
Life of this patent
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Abstract
In a rectifier in which button diodes are mounted in pairs as columns on bases which also constitute heat sinks, the connector connecting the diodes to the AC phase is made of a material which has high thermal and electrical conductivity. The columns are fastened to the base-heat sink by use of additional heat sink members which in turn are fastened to the base by bolts or screws. The latter are electrically insulating. The base-heat sink is star-shaped, the diode columns being mounted on the rays of the star. Preferably, the additional heat sink members have extensions which increase their effective cooling area.
Claims13
In rectifier apparatus comprising a positive and negative output terminal, a base also constituting a heat sink, and first and second diodes respectively connected to said positive and negative output terminals and mounted in pairs as columns, the improvement comprising
- phase connectors having high thermal and electrical conductivity interposed between said diodes in each of said pairs;
- additional heat sink members (15;
- 31;
- 32) for fastening said diode columns (12;
- 14;
- 12a;
- 12b;
- 14a;
- 14b) to said base (11;
- 111;
- 115);
- and
- a plurality of electrically insulating members for fastening said additional heat sink members to said base.
In rectifier apparatus comprising a positive and negative output terminal, a first base also constituting a heat sink, and first and second diodes respectively connected to said positive and negative output terminals and mounted in pairs as columns, the improvement comprising
- phase connectors having high thermal and electrical conductivity interposed between said diodes in each of said pairs;
- additional heat sink members (15;
- 31;
- 32) for fastening said diode columns (12;
- 14;
- 12a, 12b;
- 14a, 14b) to said first base;
- a second base also constituting a heat sink;
- and
- wherein said first and second diodes are mounted on said second and first base, respectively.
Dependencies are inferred from the claim text.