Charge-discharge protection circuit and explosion-proof lamps using it
A charge-discharge circuit and protection circuit technology, applied in the field of explosion-proof lamps, can solve the problems of increased voltage at the input end of the drive circuit, low drive conversion efficiency, and reduced battery energy utilization, so as to improve the utilization rate, improve energy conversion efficiency, The effect of improving stability and reliability
Active Publication Date: 2018-09-14
SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1
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Problems solved by technology
However, according to the latest regulations of the currently implemented explosion-proof standards, the battery pack installed in explosion-proof electrical equipment can only be composed of "several single cells in series", which will inevitably limit the connection method of the battery pack in this type of explosion-proof lamps
For example, because the number of single cells in the series-connected battery pack in this type of explosion-proof lamps increases, if a single cell in the series-connected battery pack fails, it will cause the entire battery pack to fail to supply power, thus increasing the unreliability of the battery pack accordingly. sex
In addition, with the increase in the number of single cells connected in series in the battery pack, the voltage at the input terminal of the drive circuit increases, and the drive conversion efficiency is generally low, which may reduce the energy efficiency of the battery
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0019] see figure 1 , the embodiment of the present invention provides a charging and discharging protection circuit 100, which is applied to explosion-proof lighting products such as handheld explosion-proof lighting lamps and multi-purpose explosion-proof lighting lamps, so as to provide reliable power support for the explosion-proof lighting fixtures. The charging and discharging protection circuit 100 includes a power supply energy storage module 10 , a coordin...
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The invention provides a charge / discharge protection circuit which comprises a power supply energy storage module and a coordinative processing module. The power supply energy storage module comprises two battery packs. The coordinative processing module comprises two battery protection circuits, two switching tubes and a micro-control unit electrically connected with the two switching tubes. The two battery packs are arranged independently from each other. Each battery pack is electrically connected with a corresponding battery protection circuit and switching tube to form a charge / discharge circuit. The individual charge / discharge circuits are independent from each other. The micro-control unit controls the switch-on / -off of the switching tubes to control the corresponding battery packs to discharge through the charge / discharge circuit. Instead of a plurality of parallel battery packs, the battery packs are arranged separately and independently, so that when any one of the battery packs is in a fault, other battery packs can still work normally, which not only meets the standard requirements but also improves the overall stability and reliability of the battery packs. Besides, the voltage of the drive circuit input end is reduced, so that the circuit energy conversion efficiency and electric energy utilization are improved.
Description
technical field [0001] The invention relates to a protection circuit, in particular to a charge and discharge protection circuit applied to an explosion-proof lamp and an explosion-proof lamp using the charge and discharge protection circuit. Background technique [0002] Most of the existing explosion-proof lighting products such as handheld explosion-proof lighting and multi-purpose explosion-proof lighting are directly powered by batteries. This explosion-proof luminaire provides electrical power support. However, according to the latest regulations of the currently implemented explosion-proof standards, the battery pack installed in explosion-proof electrical equipment can only be composed of "several single cells in series", which will inevitably limit the connection method of the battery pack in this type of explosion-proof lamps. For example, because the number of single cells in the series-connected battery pack in this type of explosion-proof lamps increases, if a ...
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IPC IPC(8): H02H7/18H05B37/00
Inventor 周明杰张飞
Owner SHENZHEN OCEANS KING LIGHTING ENG CO LTD