The invention relates to the field of battery protection, in particular to a vehicle-mounted lithium battery power supply system and method.The vehicle-mounted lithium battery power supply system comprises a lithium battery, a current detection resistor and a power MOSFET module which are connected in series, and is characterized by further comprising a control module which comprises a CPU unit, a current comparison unit and a power supply unit; the current comparison unit is respectively connected with the power supply unit and the current detection resistor and is used for waking up the power supply unit when detecting that the current flowing through the current detection resistor is greater than or equal to a first threshold value; the power supply unit is connected with the CPU unit and is used for supplying power to the CPU unit; wherein under the first threshold value, the vehicle-mounted lithium battery power supply system is in a safe state; the CPU unit is connected with the current detection resistor and is used for detecting the current flowing through the current detection resistor; the CPU unit is connected with the power MOSFET module and is used for controlling the power MOSFET module to be opened and closed according to the current flowing through the current detection resistor; and the second output end is used for being connected with a vehicle load. The safety of a vehicle-mounted lithium battery power supply system is guaranteed, and the loss of the system is reduced.
本申请涉及电池保护领域,具体涉及一种车载锂电池供电系统及方法,包括串联的锂电池、检流电阻和功率MOSFET模块,其特征在于,还包括:控制模块,包括CPU单元、电流比较单元和电源单元;电流比较单元与电源单元、检流电阻分别连接,用于在检测到流经检流电阻的电流大于等于第一阈值时,唤醒电源单元;电源单元与CPU单元连接,用于对CPU单元供电;其中,在第一阈值下,车载锂电池供电系统处于安全状态;CPU单元与检流电阻连接,用于检测流经检流电阻的电流;CPU单元与功率MOSFET模块连接,用于根据流经检流电阻的电流,控制功率MOSFET模块的开闭;第二输出端,用于与车上负载连接。不仅保障车载锂电池供电系统的安全,还减少系统的损耗。
Vehicle-mounted lithium battery power supply system and method
车载锂电池供电系统及方法
2022-04-29
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Vehicle-mounted auxiliary power supply system based on low-voltage lithium battery
European Patent Office | 2024
|VEHICLE-MOUNTED POWER SUPPLY, VEHICLE BATTERY SYSTEM, AND VEHICLE
European Patent Office | 2025
|VEHICLE-MOUNTED POWER SUPPLY, BATTERY SYSTEM OF VEHICLE, AND VEHICLE
European Patent Office | 2025
|VEHICLE MOUNTED POWER SUPPLY DEVICE AND VEHICLE MOUNTED POWER SUPPLY SYSTEM
European Patent Office | 2017
|