The invention relates to the technical field of protection circuits, in particular to an electric bicycle battery output overload short circuit automatic power-off protection circuit which comprises a DC1 end connected with a battery in an electric bicycle, the DC1 end is provided with a first end and a second end, the first end is connected to the positive electrode of the battery, and the second end is connected to the negative electrode of the battery and grounded; the end 1 is connected to one end of the AN1 button switch, one end of the R2 resistor, the collector electrode of the Q2 triode, the emitter electrode of the Q3 triode and the end A of the L1 current detection coil; the other end of the AN1 button switch is respectively connected to the base electrode of the Q1 triode and the collector electrode of the Q5 triode through the R1 resistor; when the electric bicycle is overloaded or short-circuited due to aging of internal circuits or other reasons caused by long-term use, automatic power-off of the output end can be realized through the protection circuit, and spontaneous combustion and fire hazards caused by heating of the internal wires of the electric bicycle due to overloading or short circuit are avoided.
本发明涉及保护电路技术领域,特别涉及一种电动自行车电池输出过载短路自动断电保护电路,包括与电动自行车内电池相连的DC1端,所述DC1端具有1端和2端,其中1端连接至所述电池的正极,2端连接至所述电池的负极并接地;所述1端连接至AN1按钮开关的一端、R2电阻的一端、Q2三极管的集电极、Q3三极管的发射极和L1电流检测线圈的A端;所述AN1按钮开关的另一端通过R1电阻分别连接至Q1三极管的基极和Q5三极管的集电极;当电动自行车长期使用导致内部线路出现老化或其它原因而出现过载或短路时,通过该保护电路可实现输出端的自动断电,避免了过载或短路而使电动自行车内电线发热而发生自燃,发生火灾危险。
Electric bicycle battery output overload short circuit automatic power-off protection circuit
电动自行车电池输出过载短路自动断电保护电路
2022-07-12
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |
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