Electronic equipment quick charge device and using method thereof based on dynamic switching
Technical field
The present invention relates to a kind of charging device and using method thereof, be specifically related to a kind of charging device of electronic appliances and using method thereof.
Background technology
Battery is made of chemical substance, and its specific charge characteristic is arranged, and not only can influence useful life if violate its intrinsic charge characteristic, but also can cause leakage blast etc.Electronic equipment all uses lithium ion battery now, and its GB regulation charging is 25 degrees centigrade of following 1C chargings to the maximum.Also be under the open environment that in the laboratory, guarantees below 25 degree in the detection, use the 1C charging.
But for electronic equipment, battery often is in the shell of sealing, and therefore heat radiation can't guarantee, its internal temperature tends to be higher than 25 degree.Therefore, in the electronic system charging design, particularly battery capacity surpasses on the above consumer electronics terminal of 1000mAh, for example e-book is 1530mAh, can't use 1C charging (electric current is big more warm all the more), but get about fixing 0.5C, can make the charging interval elongated like this.The charging interval of for example present e-book product is more than 4 hour, and the user feels that charging is very slow.
We also usually can run into such a case in daily life: when being badly in need of using electronic equipment; but find electronic equipment do not had the electricity or electric weight seldom; under this situation; we just are starved of and fill next emergent use of a part of electricity fast; at this moment; do not require electricity is full of, only require that can quick charge dealing with the use of a period of time gets final product.After emergent using, the user can be more at a slow speed carry out battery charge.
Summary of the invention
Technical problem to be solved by this invention provides a kind of electronic equipment quick charge device based on dynamic switching, and it can be the rechargeable battery charging fast and effectively, and guarantees the safety of battery.
In order to solve above technical problem, the invention provides a kind of electronic equipment quick charge device based on dynamic switching; Comprise: be the n road charging circuit of battery charge, the charging current difference of each charging circuit, n is the integer more than or equal to 2; Temperature sensor, it is positioned near the battery; Linking to each other with temperature sensor is connected to processor, and described processor is controlled described n road charging circuit.
Beneficial effect of the present invention is: can dynamically adjust the mode of charging current size fully guaranteeing to design the feedback according to temperature sensor under the prerequisite of battery principle and fail safe, can realize the quick charge of high capacity cell.
The present invention also provides the using method of above-mentioned electronic equipment quick charge device based on dynamic switching, may further comprise the steps: step 1, set in advance temperature threshold values T1, T2 ... Tn, wherein T1<T2<...<Tn, n are the integer more than or equal to 2; In step 2, when charging,, when temperature is in T1 when following, the circuit of gating charging current maximum adopts charging the most at a high speed; When temperature arrives T2, switch to charging circuit than the low one-level of maximum charging current; By that analogy, when temperature arrives Tn, switch to charging circuit than the low one-level of upper level charging current.
The present invention also provides the another kind of using method of above-mentioned electronic equipment quick charge device based on dynamic switching, and may further comprise the steps: processor provides a user selection interface, and described user selection interface comprises fast charge option and the option that charges at a slow speed; When the user selects fast charge option, the charging circuit that processor gating charging current is big; When the user selects to send the electric separation item at a slow speed, the charging circuit that processor gating charging current is little.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the schematic diagram of the described n of embodiment of the invention road charging circuit;
Fig. 2 is the schematic diagram of described 2 road charging circuits of the embodiment of the invention.
Embodiment
As shown in Figure 1, the invention provides a kind of electronic equipment quick charge device based on dynamic switching; Comprise: be the n road charging circuit of battery charge, the charging current difference of each charging circuit, n is the integer more than or equal to 2; Temperature sensor, it is positioned near the battery; Linking to each other with temperature sensor is connected to processor, and described processor is controlled described n road charging circuit.
The present invention dynamically adjusts the mode of charging current size fully guaranteeing to design the feedback according to the temperature sensor network under the prerequisite of battery principle and fail safe, can realize the quick charge of high capacity cell.
The using method of the electronic equipment quick charge device based on dynamic switching of the present invention can may further comprise the steps: step 1, set in advance temperature threshold values T1, T2 ... Tn, wherein T1<T2<...<Tn, n are the integer more than or equal to 2; In step 2, when charging,, when temperature is in T1 when following, the circuit of gating charging current maximum adopts charging the most at a high speed; When temperature arrives T2, switch to charging circuit than the low one-level of maximum charging current; By that analogy, when temperature arrives Tn, switch to charging circuit than the low one-level of upper level charging current.The present invention can set when temperature and drop to T1 again when following, and the circuit that switches to the charging current maximum again charges.Can also in step 1, set in advance upscale protection temperature T max, when battery temperature surpasses Tmax, cut off charging circuit.When temperature is reduced to Tmax when following, repeating step one and step 2 again.
Illustrate, as a kind of mode of simplifying most, described charging circuit can be for 2 the tunnel.As shown in Figure 2, charging circuit wherein is divided into high electric current (about 1C), low current (about industry 0.5C) two branch roads; Temperature sensor is placed on nearly battery place.Set in advance temperature threshold values T1, T2, Tmax, wherein T1<T2<Tmax.
During charging, when temperature is in T1 when following, high current path gating; Adopt (about 1C) charging the most at a high speed, when temperature arrives T2, switch to low current (about industry 0.5C), little in the hope of caloric value.When temperature drops to T1 when following again, switch to high electric current again and charge.The Tmax temperature is the upscale protection temperature, when battery temperature surpasses Tmax, cuts off charging circuit, to ensure cell safety.After temperature is got off, said process again again.
In fact charging paths can also according to circumstances be extended for into n bar branch road, selects corresponding to Tn kind temperature, realizing more precise current setting, and is not limited to two-stage.The invention is not restricted to be used for e-book, go for all and need be the equipment of battery charge.
Another kind of using method as device of the present invention.The present invention has also solved another technical problem, promptly can select soon charge mode at a slow speed by the user, and when the emergent use of needs, the user can independently select quick charge, and in the usual time, the user can select to charge at a slow speed.Therefore, the another kind of using method of above-mentioned electronic equipment quick charge device based on dynamic switching, may further comprise the steps: processor provides a user selection interface, and described user selection interface comprises fast charge option and the option that charges at a slow speed; When the user selects fast charge option, the charging circuit that processor gating charging current is big; When the user selects to send the electric separation item at a slow speed, the charging circuit that processor gating charging current is little.Like this, when being badly in need of wanting quick charge, the user is free to select the option of quick charge to fill the emergent use of a part of electricity fast; When the user thinks when can charge at a slow speed, can select the option that charges at a slow speed, with the mode of charging at a slow speed battery is full of.
The present invention is not limited to execution mode discussed above.More than the description of embodiment is intended in order to describe and illustrate the technical scheme that the present invention relates to.Based on the conspicuous conversion of the present invention enlightenment or substitute and also should be considered to fall into protection scope of the present invention.Above embodiment is used for disclosing best implementation method of the present invention, so that those of ordinary skill in the art can use numerous embodiments of the present invention and multiple alternative reaches purpose of the present invention.