Temperature difference storage battery

摘要

A storage type temperature difference battery is presented. The battery includes a solution 2 which contains redox ion couples having a temperature-dependent redox potential. A low-temperature electrode 1 and a high-temperature electrode 3 are disposed in the solution 2. A membrane film 6 which is impervious to the redox ion couples is disposed between the high-temperature electrode 3 and the low-temperature electrode 1. A low-temperature power electrode 7 is disposed between the low-temperature electrode 1 and the membrane film 6, and a high-temperature power electrode 8 is disposed between the high-temperature electrode 3 and the membrane film 6. When there is a temperature difference between the electrodes 1, 3, the redox potential of the ion couples change, and thermoelectric power is generated between the low-temperature electrode 1 and the high-temperature electrode 3, which is used to charge the battery. The concentration of the redox ion couples in the low temperature region and in the high temperature region increases as charging progresses, and the membrane 6 maintains the concentration difference thus storing the electrical power. Because the power electrodes 7, 8 are disposed in the solutions of different concentrations, an emf is generated by the concentration effect, and a steady power is delivered. By open circuiting the electrodes 1, 3, the steady power deliver and can be continued until the concentration difference disappears, even after the temperature difference is eliminated. Therefore, the invented battery possesses charge storage, generation and power delivery capabilities. The battery can be used effectively for waste heat utilization.