a momentary breaker
A technology of breakers and openings, which is applied in the direction of electric switches, contact electrical connections, electrical components, etc., can solve the problems of arc extinguishing melt failure, arc extinguishing melt aging failure, electric shock, etc., and reduce the risk of rupture Risk, simple structure, and the effect of improving the arc extinguishing effect
Active Publication Date: 2021-02-09
杭州超熔科技有限公司
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Problems solved by technology
However, the disadvantages of this method are: (1) The arc extinguishing melt is always connected in parallel with the main conductor, and it will share part of the current during normal operation, which may cause premature aging and failure of the arc extinguishing melt; (2) In the line current When it is cut off when it is zero or very small, the arc extinguishing melt cannot be fused and the electrical connection is maintained, and there is a safety hazard of electric shock
Method used
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[0039] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0040] Please refer to figure 1 and figure 2 As shown, a momentary breaker provided by an embodiment of the present invention includes: a lower housing 1 , a conductive part 2 , an upper housing 3 , a grille part 4 , a gas generating device 5 and a piston striker 6 .
[0041]The lower housing 1 is provided with a receiving groove 11, and t...
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The invention discloses an instantaneous breaker, which comprises a lower shell, wherein an accommodating groove is formed in the lower shell, a grid part is accommodated in the accommodating groove,an arc extinguishing narrow slit is formed in the grid part in the first direction, grid narrow slits are formed in the second direction, a pressure relief channel is formed between the side wall of the grid part and the inner wall of the accommodating groove, a pressure relief cavity is formed between the bottom of the grid part and the bottom of the accommodating groove, the pressure relief channel is communicated with the pressure relief cavity, the first end of each grid narrow slit is communicated with the arc extinguishing narrow slit, and the second end of each grid narrow slit is communicated with the pressure relief channel; a conductive part arranged on the lower shell, wherein the middle portion of the conductive part is provided with an easy-to-break metal sheet, and the easy-to-break metal sheet corresponds to the arc extinguishing narrow slit; and an upper shell covering the conductive part, wherein a gas generation device and a piston firing pin are sequentially arrangedin the upper shell from top to bottom, the piston firing pin corresponds to the easy-to-break metal sheet, and the gas generation device can push the piston firing pin to cut off the easy-to-break metal sheet and insert the easy-to-break metal sheet into the arc extinguishing narrow slit. According to the breaker, arc extinguishing is carried out in a mode that the narrow slits are matched with the grids, so that the arc extinguishing effect is improved.
Description
technical field [0001] The invention relates to the fields of electric power control and electric vehicles, in particular to an instantaneous breaker which utilizes narrow slits and grids to jointly extinguish arcs. Background technique [0002] When an electric vehicle has an internal cable short circuit or a car crash, it is necessary to quickly cut off the line to avoid battery pack fire and electric shock; when a branch of the data center power supply is short-circuited, it is necessary to cut off the branch within ms-level time to avoid the entire network. collapse; where power electronic devices are used to achieve power conversion, the use of instantaneous breakers can minimize damage to power electronic devices. [0003] The working principle of the momentary breaker is divided into two parts: 1. Use the gas generating device to break the main conductor, and an arc will be generated after the main conductor is disconnected; 2. Try to extinguish the arc on the main co...
Claims
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IPC IPC(8): H01H9/30H01H9/02H01H1/58
CPCH01H1/58H01H9/02H01H9/30
Inventor 戴超
Owner 杭州超熔科技有限公司