Antitheft detection circuit for emergency power supply storage battery
A technology of emergency power supply and detection circuit, which is applied in the field of electricity and can solve the problem of emergency power battery being stolen
Inactive Publication Date: 2016-12-14
合肥联信电源有限公司
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Problems solved by technology
[0005] The invention provides an anti-theft detection circuit for an emergency power storage battery, which solves the problem of whether the emergency power storage battery is stolen
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[0014] An anti-theft detection circuit for an emergency power supply battery, such as figure 1 As shown, it includes a sampling circuit, a voltage dividing circuit, a current limiting circuit, an isolation circuit, and an alarm module, wherein the sampling circuit includes a battery pack and an anti-reverse diode D, the voltage dividing circuit includes resistors R1 and R2, and the current limiting circuit includes resistors R3 , the isolation circuit includes a photocoupler, and the alarm module uses a buzzer to alarm.
[0015] One output terminal of the charger is connected to the cathode of the battery pack through a relay, and the other output terminal is connected to the anode of the battery pack. The cathode of the battery pack is connected to the DC bus DC-, and the anode of the battery pack is connected to the anode of the anti-reverse diode and the DC bus bar. DC+ connection, resistor R1 and resistor R2 are connected in series and then connected in parallel with the b...
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The invention discloses an antitheft detection circuit for an emergency power supply storage battery, and the circuit is characterized in that the circuit comprises a sampling circuit, a voltage-dividing circuit, a current limiting circuit, and an isolation circuit; the sampling circuit comprises a storage battery pack and an anti-inversing diode D, and is used for supply power to an emergency power supply; the voltage-dividing circuit comprises a resistor R1 and a resistor R2, and enables the voltage of the storage battery pack to be reduced to a DC voltage 20V; the current limiting circuit comprises a resistor R3, and is used for the dividing of a current in the voltage-dividing circuit; the isolation circuit comprises a photoelectric coupler, and is used for the isolation of a signal inputted by the current limiting circuit; the circuit judges whether an emergency power supply storage battery is stolen or not through detecting the voltage of the M signal end of the circuit, thereby guaranteeing that the emergency power supply can resist an emergency power fault; moreover, the circuit can detect the condition of the emergency power supply, thereby avoiding the impact on the people's life and the operation and production of an enterprise.
Description
technical field [0001] The invention belongs to the field of electricity and relates to a detection circuit, in particular to an anti-theft detection circuit for an emergency power storage battery. Background technique [0002] Emergency power supplies include chargers, inverters, batteries, isolation transformers, and switches. Emergency power supplies can convert DC power into AC power. They are mainly used in high-rise buildings, financial centers, hospital wards, civil aviation airports, exhibition venues, theaters, theaters, etc. Provide emergency lighting power supply in important places such as government offices, subway light rail, commercial real estate, petrochemical industry, shopping malls and supermarkets. [0003] Batteries are one of the important components of emergency power supply products, occupying a large proportion, and the recycling price of batteries is high, the market capacity is large, and they have great commercial value. If the battery is stolen...
Claims
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IPC IPC(8): G08B13/22
CPCG08B13/22
Inventor 李多山张云欢
Owner 合肥联信电源有限公司