Capacitor module for use in an inverter
AssigneeValeo Siemens eAutomotive (Shenzhen) Co., Ltd.
InventorsRonghui Li, Yu Qiu, Jun Liu, Huiling Wang
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Abstract
A capacitor module, in particular for use in an inverter of an electrical or a hybrid vehicle, said capacitor module comprising a housing, at least one capacitor element mounted in said housing and at least one busbar at least partially mounted into said housing and being electrically connected to said capacitor element, the housing comprising a bottom wall, a side wall and an upper wall, wherein said upper wall comprises a peripheral portion made of a sealing material and an central portion made of a thermal dissipation material, the thermal conductivity of the thermal dissipation material being bigger than the thermal conductivity of the sealing material.
Claims20
A capacitor module, in particular for use in an inverter of an electrical or a hybrid vehicle, said capacitor module comprising a housing, at least one capacitor element mounted in said housing and at least one busbar at least partially mounted into said housing and being electrically connected to said capacitor element, the housing comprising a bottom wall, a side wall and an upper wall, wherein said upper wall comprises a peripheral portion made of a sealing material and a central portion made of a thermal dissipation material, the thermal conductivity of the thermal dissipation material being bigger than the thermal conductivity of the sealing material.
An inverter, in particular for use in an electrical or a hybrid vehicle, said inverter being configured for changing direct current to alternating current, said inverter comprising a casing and a capacitor module mounted on said casing, said casing comprising a mounting wall, said capacitor module being mounted on said mounting wall, wherein the capacitor module comprises a housing, at least one capacitor element mounted in said housing and at least one busbar at least partially mounted into said housing and being electrically connected to said capacitor element, the housing comprising a bottom wall, a side wall and an upper wall, wherein said upper wall comprises a peripheral portion made of a sealing material and a central portion made of a thermal dissipation material, the thermal conductivity of the thermal dissipation material being bigger than the thermal conductivity of the sealing material.
A method of assembling a capacitor module for use in an inverter, said method comprising the steps of:
- placing an assembly comprising at least one capacitor element and at least one busbar electrically connected to said capacitor element into a housing comprising a bottom wall and a side wall,
- placing a mask tool onto said assembly,
- pouring a sealing material around said mask tool, forming a peripheral portion of an upper wall of the housing, so as to seal the gap between the side wall, the at least one busbar and the mask tool,
- removing the mask tool, therefore forming an opening within the sealing material,
- placing at least one thermal dissipation layer integrally covering said opening, forming a central portion of the upper wall of the housing, the thermal conductivity of the thermal dissipation material being bigger than the thermal conductivity of the sealing material, and
- sealing the area between the peripheral portion and the central portion of the upper wall of the housing.
Dependencies are inferred from the claim text.