Program controlled charging circuit for nickel-hydrogen battery
A technology for charging circuits and nickel-metal hydride batteries, which is applied to battery circuit devices, circuit devices, collectors, etc., and can solve problems such as poor performance
Active Publication Date: 2013-06-05
HANGZHOU SUNRISE TECH
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Problems solved by technology
The disadvantage of nickel metal hydride batteries is that the price is much more expensive than nickel cadmium batteries, and the performance is worse than lithium batteries
Method used
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[0016] With reference to accompanying drawing, further illustrate the present invention:
[0017] Program-controlled charging circuit for Ni-MH batteries, including charging power supply POWER, battery J1 to be charged, charging switch connected to charging power supply POWER, charging mode control module connecting charging switch and battery to be charged, and judging the actual voltage of the battery to be charged single-chip microcomputer;
[0018] The charging switch and the charging mode control module are controlled by the single-chip microcomputer, and the charging mode control module charges the battery to be charged through a diode;
[0019] The charging switch includes a MOS transistor Q1 connected to the charging power supply and a switching transistor Q2 connected to the G pole of the MOS transistor, the collector of the switching transistor Q2 is connected to the G pole of the MOS transistor, and the switch The base of the transistor Q2 is connected to the first...
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The invention provides a program controlled charging circuit for a nickel-hydrogen battery. The program controlled charging circuit comprises a charging power supply, a battery to be charged, a charging switch, a charging mode control module and a one-chip microcomputer; the charging mode control module charges the battery to be charged through a diode, the charging switch comprises a switching triode, the base electrode of which is connected with the one-chip microcomputer through a first divider resistor, the charging mode control module comprises a voltage regulator chip which is connectedwith a metal oxide semiconductor (MOS) tube, a first current-limiting resistor and a mode control triode, the base electrode of the mode control triode is connected with the one-chip microcomputer, athird current-limiting resistor is arranged between the base electrode and the emitter electrode of the mode control triode, the first current-limiting resistor and a second current-limiting resistorare both connected with the anode of the diode, and a shunt resistor is provided between the G electrode of the MOS tube and the anode of the diode. The advantages of the invention are as follows when battery voltage is not insufficient, the battery can be charged through the charging power supply, and a proper current can be selected based on the electric quantity of the battery to charge the battery, which enables the battery not to be overcharged.
Description
technical field [0001] The invention relates to a program-controlled charging circuit for nickel-metal hydride batteries. Background technique [0002] Ni-MH batteries are composed of hydrogen ions and metal nickel. They have more power reserves than Ni-Cd batteries, are lighter than Ni-Cd batteries, have a longer service life, and are non-polluting to the environment. The disadvantage of nickel metal hydride batteries is that the price is much more expensive than nickel cadmium batteries, and the performance is worse than lithium batteries. Ni-MH batteries are more and more widely used in production and life. As a rechargeable battery, it is often used in some independent smart devices. Therefore, the design of the charging circuit is more critical. Contents of the invention [0003] The object of the present invention is to provide a program-controlled charging circuit for Ni-MH batteries that charges the battery through a charging power source when the battery voltag...
Claims
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IPC IPC(8): H02J7/00
Inventor 丁敏华杨光高宜华张喜春洪军
Owner HANGZHOU SUNRISE TECH