The invention discloses an electric automobile air heater gear control circuit which comprises a plurality of relays, contacts of a first relay and a second relay are connected in series in power supply loops of a first fan and a second fan respectively, one end of a coil of the first relay is connected with a first voltage input end, and the other end of the coil of the first relay is grounded. One end of a coil of the second relay is connected with the second voltage input end, the other end of the coil of the second relay is grounded, contacts of the fourth relay and the fifth relay are respectively connected in series in power supply loops of the first heating element and the second heating element, one end of a coil of the fourth relay is connected with the first voltage input end and the second voltage input end, and the other end of the coil of the fourth relay is grounded; one end of a fifth relay coil is connected with a second voltage input end, the other end is grounded, and the first voltage input end and the second voltage input end are connected with input voltage through a gear control switch. According to the invention, the PTC can be heated through the high-voltage battery at low cost, and then hot air is sent out through the fan to warm a driver.
本发明公开了一种电动汽车风加热器挡位控制电路,包括多个继电器,第一继电器、第二继电器的触点分别串联在第一风扇、第二风扇的供电回路中,第一继电器的线圈一端与第一电压输入端连接,另一端接地,第二继电器的线圈一端与第二电压输入端连接,另一端接地,第四继电器、第五继电器的触点分别串联在第一加热元件、第二加热元件的供电回路中,第四继电器线圈的一端与第一电压输入端、第二电压输入端均连接,另一端接地,第五继电器线圈的一端与第二电压输入端连接,另一端接地,第一电压输入端、第二电压输入端通过挡位控制开关与输入电压连接。本发明可以低成本实现通过高压电池给PTC加热,在通过风扇送出热风,给驾驶员取暖。
Gear control circuit for air heater of electric automobile
一种电动汽车风加热器挡位控制电路
2022-12-13
Patent
Elektronische Ressource
Chinesisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |
Europäisches Patentamt | 2022
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