CHARGING DEVICE FOR A BATTERY PACK

摘要

A charging device for a battery pack has a housing defining a charging receptacle for accommodating the battery pack. Power electronics are arranged in the housing. A cooling air fan is provided in the housing which draws a suction air flow into the housing via an air inlet opening and blows the suction air flow out of the housing, as a first cooling air flow via an air outlet opening. A battery air flow flows through the battery pack and enters as a first cooling air flow via the air inlet opening. A further suction air flow is drawn into the housing from the surroundings of the housing via a further air inlet opening formed in the housing. The further suction air flow is formed as a second cooling air flow separate from the battery air flow. The power electronics are situated in the flow path between the second air inlet opening and the cooling air fan. The second cooling air flow, after cooling the power electronics, is supplied to the cooling air fan.

主权项

1. A charging device for a battery pack, the charging device comprising:
a housing having a charging receptacle formed thereon; said charging receptacle having outer connecting contacts configured to form an electrical connection with the battery pack; said housing further having an electrical connector configured to connect to a supply voltage; power electronics arranged between said electrical connector and said connecting contacts; said housing defining a first air inlet opening and an air outlet opening; a cooling air fan arranged in said housing and configured to generate a cooling air flow entering said housing as a first suction air flow via said first air inlet opening and exiting said housing via said air outlet opening; said first air inlet opening communicating with a battery air flow flowing through the battery pack so as to permit said battery air flow to flow to said first air inlet opening as a cooling air flow; said housing defining a second air inlet opening configured to permit a further suction air flow to flow into said housing from the ambient of said housing as a second cooling air flow; said second cooling air flow being separate from said battery air flow; said second air inlet opening and said cooling air fan conjointly defining a flow path therebetween; said power electronics being disposed in said flow path; and, said second cooling air flow being guided along said flow path to said cooling air fan after cooling said power electronics.