System used for conducting electric leakage detection and protection for power battery pack of electric car
A technology for power battery packs and electric vehicles, which is applied in electric vehicles, electrical devices, measuring electricity, etc., and can solve problems such as driver and passenger injury, human body electric shock, and large discharge capacity
Inactive Publication Date: 2017-01-25
陈妮娜
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- Application Information
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Problems solved by technology
The voltage value of the power battery pack used in vehicles is generally above 300V, and the discharge capacity is extremely large. If the insulation between the battery pack and the car body fails, and there are no other effective detection and protection measures, accidental short circuits and human electric shocks are prone to occur If a dangerous situation occurs, it will cause great harm to the driver and passengers.
Method used
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Embodiment 1
[0025] As shown in the figure, a system of this patent for leakage detection side protection of the power battery pack of an electric vehicle includes a backup power supply module, a detection module, an alarm module, a single-chip microcomputer, an optical MOSFET switch circuit and a voltage dividing resistor network.
[0026] The backup power supply module includes a backup battery pack Va and a DC relay K1, the backup battery pack Va is connected to the power battery pack through the DC relay K1, and is used as a backup power supply to provide power to the electric vehicle; the detection module includes a motion sensor, which is connected with a single-chip microcomputer for Detect whether the electric vehicle is in motion; the alarm module includes an audible and visual alarm, which is connected with the single-chip microcomputer for sound and light alarm; the single-chip microcomputer is connected with the optical MOSFET switch circuit for controlling the optical MOSFET swi...
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The invention provides a system used for conducting electric leakage detection and protection for a power battery pack of an electric car. The system is characterized by comprising a reserve power supply module, a detection module, an alarm module, a single-chip, a light MOSFET switch circuit and a divider resistance network; the reserve power supply pack is used as reserve power supplies to provide the electric car with power; the detection module detects if the electric car is in state of motion; the alarm module is used for emitting sound and light to conduct alarm; the single-chip is used for controlling the light MOSFET switch circuit; the light MOSFET switch circuit is composed of a light MOSFET tube; the divider resistance network is composed of a precision resistor and connected with the light MOSFET switch circuit; the circuit is used for in real time detecting and protecting the power battery pack of the electric car, sending sound and light alarm in an abnormal state of the power battery pack and providing the reserve battery group, which maximizes safety of the drivers and crew.
Description
technical field [0001] The invention relates to the field of electric leakage detection and protection, in particular to a system for carrying out electric leakage detection side protection on a power battery pack of an electric vehicle. Background technique [0002] At present, the new energy industry is developing rapidly. The new energy vehicle based on the power battery pack as the energy source is a hot development direction of major domestic and foreign OEMs, and they are actively and continuously developing and trying to solve various problems in the application of power battery packs. As a core energy storage component, the power battery pack has always been the focus of attention on its safety and reliability. The voltage value of the power battery pack used in vehicles is generally above 300V, and the discharge capacity is extremely large. If the insulation between the battery pack and the car body fails, and there are no other effective detection and protection me...
Claims
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IPC IPC(8): B60L3/00G01R31/02
CPCB60L3/0046G01R31/50
Inventor 陈妮娜
Owner 陈妮娜