A charging method for automatic gear shifting of a charger and its charging and detection circuit
A technology for detecting circuits and charging methods, which is applied to battery circuit devices, secondary battery charging/discharging, circuits, etc., and can solve the problems of reduced rechargeable capacity, battery scrapping, and non-identifying rechargeable battery attributes.
Active Publication Date: 2017-07-28
厦门乐人电子有限公司
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Problems solved by technology
However, due to the phenomenon that the internal resistance of rechargeable batteries such as Ni-MH and Ni-Cd will increase after repeated charging for a long time, their rechargeable capacity will decrease. Waiting for the rechargeable battery to charge, due to the lack of pertinence, if the charging current is too high, the internal resistance will continue to rise and the capacity will continue to decline due to the failure to cut off the power in time after the rechargeable battery is fully charged, and finally the charging capacity will be lower, or even not fully charged. The input leads to the scrapping of the battery, resulting in the waste of the available battery
Secondly, rechargeable batteries such as Ni-MH and Ni-Cd are often only suitable for Ni-MH and Ni-Cd batteries but not for lithium batteries. Existing chargers often do not have the function of identifying the properties of rechargeable batteries.
Method used
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[0029] Please check Figure 1 to Figure 3 , a charging and detection circuit, installed in the charger, it includes a controller, a PWM charging module 10, a current detection module 20, a voltage detection module 30, a discharge module 40, a temperature detection module 50 and a display module 60.
[0030] The current detection module 20 is connected to the rechargeable battery 70 in series with the PWM charging module 10, and the voltage detection module 30 is connected to the rechargeable battery 70 in parallel; The PWM charging signal and the charging control signal (corresponding to a charging control terminal of the PWM charging module 10) of the corresponding frequency and amplitude of the charging current file; the output terminal of the controller is also connected to the display module 60 and can provide output prompt signal; the current detection module 20 and the voltage detection module 30 are also connected to the input terminal of the controller and can send the...
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The invention discloses an automatic gear shift charging method of a charger and a charging and detecting circuit thereof. The charging and detecting circuit is installed and connected in the charger, and comprises a controller, a PWM charging module, a current detecting module, a voltage detecting module and display module. The charging method comprises the following steps: (1) placing a rechargeable battery in a charger seat; step (2) judging that whether the rechargeable battery is applicable to the charger or not; step (3) adjusting a charging current gear matched with the rechargeable battery; and step (4) accurately controlling current output according to the charging current gear matched with the rechargeable battery and continuously charging the rechargeable battery by using the charging and detecting circuit. The charging method and the charging and detecting circuit have the advantages of achieving rapid charging, and prolonging the service life of the battery, so that the battery is sufficiently utilized.
Description
technical field [0001] The invention relates to a charging method and a charging circuit for a battery, in particular to a charging method for automatically shifting gears of a charger and a charging and detecting circuit thereof. Background technique [0002] In the prior art, when rechargeable batteries such as nickel-metal hydride and nickel-cadmium are charged, they are directly charged with a fixed current until they are fully charged and cut off. However, due to the phenomenon that the internal resistance of rechargeable batteries such as Ni-MH and Ni-Cd will increase after repeated charging for a long time, their rechargeable capacity will decrease. Waiting for the rechargeable battery to charge, due to the lack of pertinence, if the charging current is too high, the internal resistance will continue to rise and the capacity will continue to decline due to the failure to cut off the power in time after the rechargeable battery is fully charged, and finally the chargin...
Claims
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IPC IPC(8): H01M10/44H02J7/00G01R31/36G01R19/165
CPCG01R19/165G01R31/382H01M10/46H01M10/486H01M10/488Y02E60/10
Inventor 钟传奇李龙泉
Owner 厦门乐人电子有限公司