| 摘要 |
PURPOSE:To detect the electrolyte level of a battery with a simple constitution, by forming device of a float which is floating in the electrolyte and contains a magnet, magnetic switches which operate depending on the position of the float, and a display which comprises liquid crystal. CONSTITUTION:A level detecting part 6 is provided which penetrates floatingly a float 5 which is floating in an electrolyte surface 3 and contains a magnet 4, and in the part 6 magnet switches 7a to 7b, which sloses by the magnet 4 when the position of the float 5 coincides with the maximum, optimum, and minimum electrolyte level, is provided. A display plate 8 is provided on the top of the detecting part 6, and in it a display 10 comprising liquid crystal and a silicon solar cell 11 to operate the display 10 are provided through a transparent window 9. Thus the external electric source is needless, magnetic switches 7a to 7c are operated through vertical movement of the float 5 to display a figure on the display plate 8, and the electrolyte level can be detected. |
