Battery power management system and battery power supply system
A power management system and battery technology, applied in the direction of battery disconnection circuit, battery circuit device, different battery charging, etc., can solve the problems of battery emptying and battery damage, and achieve the effect of protecting battery safety.
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Embodiment 1
[0036] This embodiment provides a battery power management system, which is used to control the power supply of a battery-powered terminal. Such as figure 1 As shown, the battery power management system includes a mechanical switch 1, a first battery control module 2 and an MCU3.
[0037] One end of the mechanical switch 1 is electrically connected to the battery, and the other end of the mechanical switch 1 is electrically connected to the power consumption terminal and the first battery control module 2 . When the mechanical switch 1 is closed, the power consumption terminal is activated and electrically connects the battery to the first battery control module 2 .
[0038] The first battery control module 2 is electrically connected to the power supply pin and the first output pin of the MCU3; the MCU3 is electrically connected to the power consumption terminal for starting control or protection shutdown of the power consumption terminal. The battery is generally equipped ...
Embodiment 2
[0044] In this embodiment, on the basis of Embodiment 1, the first electronic switch circuit 21 and the second electronic switch circuit 22 are specifically implemented.
[0045] Such as figure 2 As shown, the first electronic switch circuit 21 includes a voltage reference chip Z1, a first triode Q1, a second triode Q2, a first diode D1, a second diode D2, a first capacitor C1, a second Resistor R2, third resistor R3, fourth resistor R4 and fifth resistor R5.
[0046] The other end of the mechanical switch 1 is electrically connected to the cathode of the first diode D1, the anode of the second diode D2 and the emitter of the first triode Q1, and the anode of the first diode D1 is connected to the second triode The base of the tube Q2 is electrically connected, the cathode of the second diode D2 is electrically connected to one end of the second resistor R2, the collector of the first triode Q1, and one end of the fifth resistor R5 are electrically connected to the power pin...
Embodiment 3
[0057] This embodiment is a further improvement on Embodiment 2. Such as Figure 4 As shown, the power management system of the battery of the present embodiment also includes a second battery control module 4, and the second battery control module 4 is connected with the first input pin, the second output pin, the power supply pin and the power consumption pin of the battery and MCU3. The electrical connection of the electrical parts in the terminal that need to be turned off with a delay.
[0058] The second battery control module 4 is a power-on circuit that does not pass through the mechanical switch 1, and the purpose is to ensure that the power control system of the battery can still supply power for a period of time after the mechanical switch 1 is turned off. When the mechanical switch 1 is turned off, the second battery control module 4 continues to supply power to the MCU3 and the power-consuming components in the power-consuming terminals that need to be turned off...
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Abstract
Description
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