The invention relates to the technical field of circuit design, and concretely relates to a battery charging and discharging control circuit and method, and a new energy automobile. A discharging control loop comprises a first switch, a second switch, a third switch, a fourth switch and a pre-charging resistor. One end of the first switch is connected with the negative electrode of a battery; theother end is connected with the negative electrode of a discharge load; the positive electrode of the discharge load is connected with one end of the second switch; the other end of the second switchis connected with one end of the third switch; the other end of the third switch is connected with the positive electrode of the battery; one end of the pre-charging resistor is connected with the positive electrode of the battery; the other end is connected with one end of the fourth switch; and the other end of the fourth switch is connected with the other end of the second switch. During discharging, pre-charging operation is carried out on the discharge load firstly, so that the current in the circuit rises slowly, and discharging is carried out after the pre-charging operation is completed, so damage to each component in the circuit or damage to the whole circuit due to large current generated by directly closing a plurality of switches can be avoided.
本发明涉及电路设计技术领域,具体涉及一种电池充放电控制电路、控制方法和新能源汽车。该放电控制回路包括第一开关、第二开关、第三开关、第四开关和预充电阻,第一开关的一端与电池的负极连接,另一端与放电负载的负极连接,放电负载的正极与第二开关的一端连接,第二开关的另一端与第三开关的一端连接,第三开关的另一端电池的正极连接,预充电阻的一端与电池的正极连接,另一端与第四开关的一端连接,第四开关的另一端与第二开关的另一端连接,在放电时首先对放电负载进行预充操作,使得电路中电流缓慢上升,当完成预充操作后,再进行放电,这样避免了直接闭合多个开关产生的大电流对中各元件造成损害,使得元器件损坏或者整个电路损坏。
Battery charging and discharging control circuit and method, and new energy automobile
一种电池充放电控制电路、控制方法和新能源汽车
2020-07-31
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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