The embodiment of the invention provides a battery heating circuit based on a transformer and an electric vehicle, and relates to the technical field of power batteries. In the battery heating circuit, a first sub-battery and a second sub-battery are connected in series to form a first battery half-bridge circuit, a third sub-battery and a fourth sub-battery are connected in series to form a second battery half-bridge circuit, and the first battery half-bridge circuit and the second battery half-bridge circuit are connected in parallel; the transformer is provided with a primary side and a secondary side, two ends of the secondary side are respectively connected with the midpoint of the first battery half-bridge circuit and the midpoint of the second battery half-bridge circuit, and one end of the primary side is connected with one endpoint of a preset endpoint set; the three-phase motor is connected with the other end of the primary side and the three-phase inverter, and the three-phase motor is connected with the transformer through the heating relay. The battery heating circuit can realize the technical effects that the heating of components is less when the battery is heated, the battery heating circuit can be used in a driving state, and the influence on the dynamic property of a motor is very small.
本申请实施例提供一种基于变压器的电池加热电路及电动车辆,涉及动力电池技术领域。该电池加热电路中第一分电池和第二分电池串联为第一电池半桥电路,第三分电池和第四分电池串联为第二电池半桥电路,第一电池半桥电路和第二电池半桥电路并联;变压器设置有原边和副边,副边的两端分别连接第一电池半桥电路的中点、第二电池半桥电路的中点,原边的一端连接预设端点集合的其中一个端点;三相电机分别与原边的另一端、三相逆变器连接,三相电机通过加热继电器连接变压器。该电池加热电路可以实现在加热电池时部件发热少,并可以在行车状态下使用,而且对电机动力性影响很小的技术效果。
Battery heating circuit based on transformer and electric vehicle
一种基于变压器的电池加热电路及电动车辆
2022-12-13
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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