DC-DC converter unit
First Claim
1. A DC--DC converter unit comprising:
- a high-voltage circuit including a main fuse provided in a case;
a branch circuit branched from said high-voltage circuit on a downstream side of said main fuse;
a subfuse inserted in said branch circuit;
a DC--DC converter connected to a terminal of said branch circuit for supplying a low-voltage circuit;
a housing including a space defined within; and
a fuse holding portion for holding said main fuse, said fuse holding portion including a cover formed of an insulating material for covering said fuse holding portion;
wherein said housing houses said DC--DC converter, said main fuse and said subfuse in said space defined within, and wherein a main battery mounted on an electric vehicle is connected to a primary side of said high-voltage circuit, and a high-voltage load is connected to a secondary side of said high-voltage circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
A DC--DC converter unit includes a high-voltage circuit having a main fuse provided in a case, a branch circuit branched from the high-voltage circuit on a downstream side of the main fuse, a subfuse inserted in the branch circuit, and a DC-DC converter connected to a terminal of the branch circuit. A main battery, mounted on an electric vehicle, is connected to a primary side of the high-voltage circuit. A high-voltage load is connected to a secondary side of the high-voltage circuit. The circuit of the high-voltage portion can be shortened, so that covered harnesses and waterproof connectors used in the high-voltage portion can be reduced to thereby reduce the cost. Further, the reliability of the high-voltage portion can also be improved.
22 Citations
18 Claims
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1. A DC--DC converter unit comprising:
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a high-voltage circuit including a main fuse provided in a case; a branch circuit branched from said high-voltage circuit on a downstream side of said main fuse; a subfuse inserted in said branch circuit; a DC--DC converter connected to a terminal of said branch circuit for supplying a low-voltage circuit; a housing including a space defined within; and a fuse holding portion for holding said main fuse, said fuse holding portion including a cover formed of an insulating material for covering said fuse holding portion; wherein said housing houses said DC--DC converter, said main fuse and said subfuse in said space defined within, and wherein a main battery mounted on an electric vehicle is connected to a primary side of said high-voltage circuit, and a high-voltage load is connected to a secondary side of said high-voltage circuit. - View Dependent Claims (2)
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3. A DC--DC converter unit comprising:
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a housing including a space defined within and a cover for closing said space; a high-voltage line being supplied through said space in said housing; a main fuse operatively connected to said high-voltage line and said main fuse being disposed within said space of said housing; a branch line being disposed within said space in said housing and being operatively connected to said high-voltage line; a subfuse operatively connected to said branch line and said subfuse being disposed within said space of said housing; and a DC--DC converter being operatively connected to said branch line; wherein a waterproof connection is provided for said high-voltage line at connections of the high-voltage line upon entering and exiting from the space of said housing and a cover is provided to seal said space from the environment. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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11. A DC--DC converter unit comprising:
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a housing including a space defined within and a cover for closing said space; a high-voltage line being supplied through one end of said space in said housing; a main fuse operatively connected to said high-voltage line with said main fuse being disposed within said space of said housing; a branch line being disposed within said space in said housing and being operatively connected to said high-voltage line; a subfuse operatively connected to said branch line with said subfuse being disposed within said space of said housing; and a DC--DC converter being operatively connected to said branch line with said DC--DC converter being disposed within said space of said housing; wherein a waterproof connection is provided for said high-voltage line at connections of the high-voltage line upon entering and exiting from the space of said housing and said cover is provided to seal said space from the environment. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification