CN203151175U - A solar-energy portable emergency power supplying system - Google Patents

Abstract

The utility model discloses a solar portable emergency power supply system, which comprises a lithium battery pack, a charger connected to the lithium battery pack and to the mains, a DC converter and an AC converter respectively connected to the lithium battery pack It is connected with LED lights, solar panels, and the solar panel and the lithium battery pack respectively, and charges the lithium battery pack with maximum power when the light is sufficient and the lithium battery pack is insufficient. The solar portable emergency power supply system of the utility model can not only ensure that the solar battery panel works in the best state during the normal charging process, but also improve the charging efficiency of the solar battery panel, and improve the portability of the emergency power supply system.

Description

A solar portable emergency power supply system

technical field

The utility model relates to a portable emergency power supply system, in particular to a solar portable emergency power supply system which utilizes solar panels to generate electric energy to provide emergency lighting and power supply for emergency repair sites.

Background technique

In outdoor emergency repair equipment, emergency rescue and disaster relief, etc., it is impossible to obtain power supply from the grid normally, so there is a wide demand for emergency lighting and power supply independent of the grid in these occasions.

The existing solution is to use diesel generators and energy storage devices such as lead-acid batteries or lithium batteries to provide energy. However, when the energy of the emergency power supply system is exhausted, the energy cannot be replenished in a timely manner, and the energy storage capacity of the equipment is often increased at the expense of the portability of the emergency power supply system.

At present, although there are emergency power supply devices that use solar panels to ensure energy supply, which can reduce the energy storage capacity to a certain extent and improve the portability of the system, the energy conversion efficiency between photovoltaics is not high enough to maximize the use of solar energy. converted into electricity.

Contents of the invention

The purpose of this utility model is to provide a solar portable emergency power supply system in order to solve the above problems. The emergency power supply system not only has good portability, but also can ensure extremely high energy conversion efficiency between photoelectric Power point tracking (MPPT), which converts light energy into electrical energy to the greatest extent, is used in emergency power supply occasions.

The purpose of this utility model is achieved in that:

A solar portable emergency power supply system of the utility model comprises a lithium battery pack, a charger connected to the lithium battery pack and to the mains, and a DC converter, an AC converter and a DC converter respectively connected to the lithium battery pack. LED lights, the solar portable emergency power supply system also includes a solar panel and a charging controller connected to the solar panel and the lithium battery pack respectively.

In the above solar portable emergency power supply system, wherein the charge controller is a charge controller that charges the lithium battery pack with maximum power when the light is sufficient and the lithium battery pack is insufficient.

The solar energy portable emergency power supply system of the utility model can not only ensure that the solar battery panel works in the best state during the normal charging process, but also improve the charging efficiency of the solar battery panel, and improve the portability of the emergency power supply system.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Figure 2 is a schematic diagram of the Buck circuit.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Please refer to Fig. 1, the solar portable emergency power supply system of the utility model includes a lithium battery pack 1, a charger 2 connected to the lithium battery pack 1 and to the mains, and a DC converter 3 connected to the lithium battery pack 1 respectively , an AC converter 4, an LED lamp 5, a solar battery panel 6, and a charge controller 7 connected to the solar battery panel 6 and the lithium battery pack 7 respectively.

Under normal circumstances, use 220V commercial power to connect the charger 2 to charge the lithium battery pack 1 . Under the situation that the solar energy portable emergency power supply system of the utility model cannot obtain commercial power, the solar panel 6) is connected to the charging controller 7, and the lithium battery pack 1 is charged in time on the spot.

The utility model can meet different electricity demands. The DC converter 3 and the AC inverter 4 are electrically connected to the lithium battery pack 1 respectively, and provide 5V direct current and 220V alternating current for the lithium battery pack 1 respectively; Emergency lighting can be provided.

The charging controller 7 adopts the perturbation and observation method to realize maximum power point tracking (MPPT) when the light is sufficient and the lithium battery pack 1 is insufficient, and the lithium battery pack 1 is charged with the maximum power.

The maximum power point tracking can be realized in the following way: by sampling the output voltage V(k) and current I(k) of the charging controller 7 to calculate the charging power P(k), and calculate the charging power P(k) with the charging power calculation value P( k-1) to compare, and determine the shifting direction of the output voltage according to the voltage shifting situation. The cycle repeats to ensure that the charging power is stable near the maximum value and realizes maximum power point tracking.

The change of the output voltage is realized through the Buck circuit. In Figure 3, when Q1 is turned on, the solar panel 6 serves as a power source to supply power to the equivalent load _R0 , and the current flows through the inductor L1, charging the capacitor C1 while providing energy for the load _R0 ; when Q1 is turned off, The capacitor C1 discharges the load _R0 , and at the same time, the current supplies power to the load _R0 through the freewheeling diode D1. The output voltage is D*Vs, where D is the duty cycle of the PWM wave shown in Figure 3.

The above embodiments are only for illustrating the utility model, rather than limiting the utility model. Those skilled in the art can also make various transformations or modifications without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should also belong to the category of the present utility model, and should be defined by each claim.

Claims (2)

1. A solar portable emergency power supply system, comprising a lithium battery pack, a charger connected to the lithium battery pack, and connected to the mains, and a DC converter, an AC converter and an LED lamp respectively connected to the lithium battery pack , It is characterized in that, the solar portable emergency power supply system also includes a solar battery panel and a charging controller connected to the solar battery panel and the lithium battery pack respectively. 2. A kind of solar energy portable emergency power supply system as claimed in claim 1, is characterized in that, described charge controller is the charging control that carries out maximum power charging to lithium battery pack when illumination is sufficient and described lithium battery pack electric quantity is insufficient device.

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