Self-driven ignition device without external power supply and preparing method of self-driven ignition device
An ignition device and external power supply technology, which is applied in the field of pyrotechnics, can solve problems such as poor reliability and complex drive circuits, and achieve the effect of reducing volume and power consumption
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 Such as figure 1 As shown, the self-driven ignition device of this embodiment without external power supply includes: ignition device housing 1, anode electret thin layer 2, anode conductive film 3, cathode electret thin layer 7, cathode conductive film 6, starting Pyrotechnic agent 4, ignition tip 5 and limiter 8; wherein, ignition device shell 1 adopts insulating material; A limiting device 8 is set between the electret cathode and the ignition device; the anode electret thin layer 2 and the cathode electret thin layer 7 face each other, are filled with positive and negative charges respectively, and the surfaces are respectively covered with the anode conductive film 3 and the cathode electret thin layer. The cathode conductive film 6; the anode conductive film 3 is opposite to the cathode conductive film 6, and the opposite surfaces of the two are respectively filled with positive charges and negative charges to form an electrostatic field; an initial pyrotechnic ag...
 Such as figure 2 As shown, in this embodiment, a thrust providing device 9 is arranged between the electret cathode and the ignition device housing, the thrust providing device adopts a spring, and a plurality of springs are symmetrically arranged between the electret cathode and the ignition device housing, Others are the same as embodiment one. When the ignition device does not receive external force or the external force is less than the overload force threshold, limit the position of the electret cathode so that it cannot move, as shown in (a); when the axial force of the ignition device exceeds the overload force of the limit device When the threshold is reached, the limit device releases the electret cathode, and the electret cathode moves to the electret anode under the action of the electrostatic field, and the thrust provides transposition 9 to further provide external force to push the electret cathode to move to the electret anode, When the ignition tip of ...
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