| 摘要 |
<p>To provide a high-quality, high-output, and low-cost automotive alternator by suppressing heat generation through the reduction of current loss in a heat dissipating plate of a rectifier without expanding a space for placing the heat dissipating plate and reducing the cooling performance of the heat dissipating plate. An automotive alternator (31) includes a rectifier (18), wherein the rectifier (18) is configured such that a heat dissipating plate (20) of positive pole to which the rectifier element (22) of positive pole is mounted is disposed opposite to a heat dissipating plate (21) of negative pole to which a plurality of rectifier elements (23) of negative pole are mounted; wherein the heat dissipating plate (20) of positive pole is made up of a first heat dissipating plate (201) and a second heat dissipating plate (202), which are made of two different materials, the first heat dissipating plate (201) is in a form that a plurality of rectifier elements (22) of positive pole are electrically connected with an output terminal, and the second heat dissipating plate (202) is provided with a large number of cooling fins so as to cover the first heat dissipating plate (201); and wherein the first heat dissipating plate (21) of negative pole is made up of a first heat dissipating plate (211) and a second heat dissipating plate (212), which are made of two different materials, the first heat dissipating plate (211) is in a form that a plurality of rectifier elements (23) of negative pole are electrically connected, and the second heat dissipating plate (212) is provided with a large number of cooling fins so as to cover the first heat dissipating plate (211).</p> |
