Charging detection method and device for small-capacity battery
A charging detection and battery charging technology, applied in battery circuit devices, secondary battery charging/discharging, measuring devices, etc., can solve the problems of complex circuits and high costs, and achieve the effect of simple circuits and low costs
Inactive Publication Date: 2011-04-06
SHENZHEN H&T INTELLIGENT CONTROL
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a charging detection method and device for a small-capacity battery with a relatively simple circuit and low cost in view of the above-mentioned defects of the prior art that the circuit is relatively complicated and the cost is high
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Embodiment Construction
[0039] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0040] Such as figure 1 As shown, in the first embodiment of the small-capacity battery charging detection method and device of the present invention, the method flow includes the following steps:
[0041] Step S11 sets the first port electrically connected to the small-capacity battery to the analog-to-digital conversion mode: in this embodiment, the small-capacity battery is electrically connected to the first port of the microcontroller (see image 3 ), the first port of the microcontroller is actually a port with multiple configurable functions in the microcontroller, for example, the first port can become the port of the analog-to-digital conversion input function under software settings (also Even if it is set to analog-to-digital conversion mode), it can also become an input / output port (that is, the so-called I / O port) under software settings. ...
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The invention relates to a charging detection method for a small-capacity battery, which comprises the following steps of: setting a first port of a microcontroller to be a digital to analog conversion port mode; and obtaining the current voltage of the small-capacity battery through the first port; judging whether the current voltage is higher than a set voltage value, if so, waiting for a first set time and returning; otherwise charging the small-capacity battery through the first port within a second set time and returning. The invention also relates to a charging detection device for the small-capacity battery. In implementation, the charging detection method and the device for the small-capacity battery have the following advantages of simple circuit and low cost because the state of the first port of the microcontroller is set according to different states of the small-capacity battery, the actions of charging, detection and the like of the battery are all realized at the same microcontroller port by using rest ports of the microcontroller without extra charging circuits and detection circuits.
Description
technical field [0001] The invention relates to charging and control of a battery, and more specifically, to a charging detection method and device for a small-capacity battery. Background technique [0002] In many control circuits or devices using microcontrollers, it is necessary to maintain data or clocks during power outages, so that data in the circuit or device will not be lost during power outages, and clocks will not be interrupted during power outages, so that Preserves the state of a circuit or device prior to the loss of power. Typically, in this case, the batteries used to provide power during a power outage are rechargeable, small-capacity batteries. Generally, an independent charging control circuit is used to charge the small-capacity battery when the circuit or device has power, and the main function of the circuit or device is implemented by a microcontroller. However, this method requires an additional charging and control circuit, and the circuit is rel...
Claims
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IPC IPC(8): H02J7/00H01M10/44G01R31/36
CPCY02E60/12Y02E60/10
Inventor 姜西辉邹志华
Owner SHENZHEN H&T INTELLIGENT CONTROL