CN209313513U - A device that uses soil to generate electricity - Google Patents

Abstract

The utility model discloses a device for generating electricity by using soil, which comprises a soil battery pack, a charging switch and an electrolytic capacitor, and the charging switch and the electrolytic capacitor are connected in series with the poles of the soil battery pack through wires; the soil battery pack Including at least two soil batteries, the soil batteries are connected in series to form a soil battery pack; the soil battery includes a battery case, anode, soil, cathode and water, the soil is placed at the bottom of the battery case, the water covers the soil surface, and the anode is buried in the soil , the cathode is submerged in water. When the capacitor is fully stored with the electric energy generated by the soil, it can discharge to small electrical appliances to drive the electrical appliances to run. The device has the advantages of long power generation time, no chemical reagents used in the power generation process, and no pollution.

Description

A device that uses soil to generate electricity

technical field

The invention belongs to the technical field of new energy, and in particular relates to a device for generating electricity by using soil.

Background technique

Outdoor sports, field rescue, and field expeditions all need to run various small electrical appliances, such as sensors, LED lights, fans, mobile phones, electronic clocks, etc. However, in the field or in some remote areas, power is not readily available. Therefore, currently in the field mainly rely on chemical batteries to maintain the operation of these small electrical appliances. Although chemical batteries can provide stable power and are easy to carry, the power they provide is limited and cannot maintain the operation of small electrical appliances for a long time, and discarding chemical batteries is very easy to cause pollution.

The inventors have found in previous studies that soil generally contains a variety of electricity-producing bacteria, and these bacteria can convert chemical energy generated by decomposing organic matter into electrical energy. The principle is: after the soil is flooded, the electricity-producing bacteria anaerobically decompose the organic matter to generate electrons, and transfer the electrons to the anode buried in the soil. A voltage is generated between the anode and cathode. Due to the rich content of organic matter in the soil, soil batteries can sustain power generation for more than a year. In addition, compared with chemical batteries, the soil power generation process does not use any chemical reagents, and the product of the power generation process is H ₂ O.

Contents of the invention

Technical problem to be solved: In order to solve the problem of power supply to small electrical appliances under field conditions and make up for the shortage of conventional electric energy, the utility model provides a device that uses soil to generate electricity and uses it to drive small electrical appliances. The device has the advantages of long power generation time, no chemical reagents used in the power generation process, and no pollution.

Technical solution: a device that utilizes soil to generate electricity, including a soil battery pack, a charging switch and an electrolytic capacitor, the charging switch and the electrolytic capacitor are connected in series to the two poles of the soil battery pack through wires;

The soil battery pack includes at least two soil batteries, and the soil batteries are connected in series to form a soil battery pack;

The soil battery includes a battery casing, an anode, soil, a cathode and water, the soil is placed at the bottom of the battery casing, the water covers the soil surface, the anode is embedded in the soil, and the cathode is immersed in the water.

Further, the capacity of the electrolytic capacitor is > 1 mF.

Further, the battery case is made of insulating material, preferably plastic or glass.

Further, the material of the anode and the cathode is selected from stainless steel, titanium, platinum, carbon felt, carbon cloth or graphite.

Further, the material of the wire is selected from copper, aluminum or titanium.

Further, the organic carbon content of the soil is > 5 mg/kg, and the source includes but not limited to forest land, grassland, farmland, paddy field or wetland.

Further, the water includes but not limited to distilled water, deionized water, tap water or water obtained from wetlands.

The method for using the above-mentioned device to drive small electrical appliances specifically includes the following steps:

Step 1, put the soil into the battery casing and pour water, bury the anode in the soil and immerse the cathode in the water to form a soil battery, connect at least two soil batteries in series through wires to form a series soil battery pack, and Obtain an open circuit voltage higher than 1 V;

Step 2, connect the charging switch in series with the electrolytic capacitor, connect the two poles of the soil battery pack in step 1 with wires, connect the power switch in series with the small electrical appliance, and then connect it in parallel with the electrolytic capacitor. When the power switch is disconnected and the charging switch is connected, the soil battery group to charge the electrolytic capacitor;

Step 3. When the capacitor voltage reaches or approaches the voltage of the soil battery pack, turn off the charging switch and turn on the power switch. At this time, the electrolytic capacitor provides the electric energy stored in the soil to the small electrical appliance, and drives the operation of the small electrical appliance.

Soil generally contains a variety of electrogenic bacteria, which can convert the chemical energy generated by the decomposition of organic matter into electrical energy. After the soil is flooded, the electricity-producing bacteria anaerobically decompose the organic matter to generate electrons, and transfer the electrons to the anode buried in the soil. The electrons reach the cathode through the wire, and undergo a reduction reaction with the dissolved oxygen in the water, thereby forming a current and flowing between the anode and the cathode. A voltage is generated between them. A soil battery is composed of water-covered soil and a pair of cathode and anode. Due to the high internal resistance of the soil, the voltage and current of a single soil battery are low, so two soil batteries need to be connected in series to obtain a voltage above 1 V. Capacitors can also be used to accumulate and store lower electric energy. When the capacitor is full of electric energy generated by the soil, it can discharge to small electrical appliances to drive them to run.

Beneficial effects: the utility model can solve the problem of power supply to small electrical appliances under field conditions. Due to the rich content of organic matter in the soil, the power generation time of the soil battery is long-lasting, and the power generation process does not use any chemical reagents and does not generate pollution.

Description of drawings

Figure 1 Schematic diagram of the power generation device in Example 1, in which 1-soil battery, 2-charging switch, 3-power supply switch, 4-electrolytic capacitor, 5-small electrical appliances, 10-glass beaker, 11-anode, 12-rice Soil, 13-cathode, 14-overlying water.

Detailed ways

The following examples further illustrate the content of the present utility model, but should not be interpreted as a limitation of the present utility model. Under the condition of not departing from the spirit and essence of the utility model, the modifications and replacements made to the methods, steps or conditions of the utility model all belong to the scope of the utility model. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

Example 1

The utility model provides a device which utilizes soil to generate electricity, and utilizes the device to drive small electric appliances to run.

As shown in Figure 1, 1.5 kg of paddy soil (with an organic carbon content of 33 g/kg) 12 was put into a glass beaker 10, and an anode carbon felt (8 cm in diameter) 11 was buried at a depth of 6 cm below the paddy soil, and drawn out Titanium wire lead; pour tap water into the glass beaker to make the paddy soil completely submerge, and keep the overlying water 14 of 3 cm depth; place the platinum net 13 as the cathode above the flooded soil, completely submerge in the overlying water, and remove the The net leads to another titanium wire lead; thereby completing the construction of a soil battery 1 .

Use the above method to construct three same soil batteries, and connect the three soil batteries in series through wires to form a soil battery pack. After running for a week, use a multimeter to detect the series voltage reaches 1.52 V.

Connect the electrolytic capacitor 4 with a capacity of 1 F to the charging switch 2 with a wire, and connect it to the positive and negative poles of the soil battery pack, turn on the charging switch 2, and the soil battery 1 connected in series starts to charge the electrolytic capacitor 4. At the same time, after the electronic timer 5 with a rated voltage of 1.5 V is connected in series with the power supply switch 3, it is connected in parallel with the electrolytic capacitor 4. During the charging process of the electrolytic capacitor, the power supply switch 3 is kept in an off state. Use a multimeter to measure the voltage at both ends of the electrolytic capacitor. When the voltage reaches 1.5 V, turn off the charging switch 2 and turn on the power supply switch 3. At this time, the electronic timer starts counting and clearly displays the time, indicating that the electric energy drive using soil power generation has been successfully realized. Small appliances.

Claims (6)

1. a kind of device to be generated electricity using soil, it is characterised in that: including soil battery pack, charge switch and electrolytic capacitor, institute It is connect by conducting wire with the two poles of the earth of soil battery pack after stating charge switch and electrolytic capacitor series connection；

The soil battery pack includes at least two soil batteries, and soil battery is serially connected to form soil battery pack；

The soil battery includes battery case, anode, soil, cathode and water, and soil is placed in battery case inner bottom, and water covers It covers in soil surface, anode is embedded in the soil, and cathode is submerged in water.

2. the device according to claim 1 to be generated electricity using soil, it is characterised in that: capacity > 1 of the electrolytic capacitor mF。

3. the device according to claim 1 to be generated electricity using soil, it is characterised in that: the material of the battery case is exhausted Edge material is selected from plastics or glass.

4. the device according to claim 1 to be generated electricity using soil, it is characterised in that: the material of the anode and cathode is selected From stainless steel, titanium, platinum, carbon felt, carbon cloth or graphite.

5. it is according to claim 1 using soil generate electricity device, it is characterised in that: the material of the conducting wire be selected from copper, Aluminium or titanium.

6. the device according to claim 1 to be generated electricity using soil, it is characterised in that: the organic carbon content of the soil > 5 mg/kg, source include but are not limited to forest land, meadow, farmland, paddy field or wetland.