Electric circuit breaker with pyrotechnic actuation

A pyrotechnic, actuation technology, applied in circuits, electrical switches, electrical components, etc., to solve problems such as jeopardizing the correct operation of circuit breakers, difficulty in automation, high productivity, and poor sealing

Inactive Publication Date: 2013-03-27
海瑞克里兹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device is complex because it requires a large number of precision parts that are relatively expensive to produce
Also, the assembly of these components requires mastery of assembly and joining operations with small mechanical tolerances, making it difficult to automate for high productivity
Furthermore, when pyrotechnic pressure builds up, the device can have poor seals that cause gas leakage, which can jeopardize the correct operation of the circuit breaker

Method used

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  • Electric circuit breaker with pyrotechnic actuation
  • Electric circuit breaker with pyrotechnic actuation
  • Electric circuit breaker with pyrotechnic actuation

Examples

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Embodiment Construction

[0031] More specifically, considering figure 1 , 2 And 3A, 3B show a pyrotechnic actuated electrical switch 11 constituting a circuit breaker, which has a housing 13 and a pyrotechnic actuated gas generator 15 installed in the housing, the housing defining a cavity 17, The structure of the cavity 17 changes when the gas generator emits gas. In this example, as further described, when the gas generator 15 emits gas under pressure, the volume of the cavity increases. A rectangular conductive blade 19 made of copper, for example, passes through the housing 13. The ends 20a, 20b of the conductive blades extend outward from the housing and thus achieve the electrical connection of the switch in a contactable manner, that is, allow the switch to be inserted into the circuit to make it safe.

[0032] According to an important feature of the present invention, before the aforementioned pyrotechnic trip (ie, before the ignition of the gas generator and the emission of gas under pressure,...

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PUM

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Abstract

Electric circuit breaker forming a breaker switch in particular, in which a conducting blade is broken by the tripping of a pyrotechnic activation gas generator. According to the invention, a gas generator (15) with pyrotechnic actuation is designed so as to emit gases resulting from the combustion of a charge, and the generator is associated with a variable-configuration chamber (17) and a breakable conducting blade (19) constitutes a back wall of this chamber, the breaking of the blade under the actuation of the gases causing the interruption of the electric circuit of which the blade forms part.

Description

Technical field [0001] The present invention relates to a pyrotechnic actuated electrical switch, which is used, for example, as a circuit breaker and preferably uses a known gas micro generator. A preferred application field is an electric vehicle that requires a circuit breaker, so that the safety of the vehicle and its passengers can be guaranteed when the battery and / or related circuits fail, such as when an accident occurs. Therefore, the present invention mainly aims to protect the passengers of electric vehicles by providing emergency shutdown of the drive train components. However, this device can also be used in other fields, such as aviation, aerospace, navigation and so on. Background technique [0002] The development of electric vehicles has led to the use of high storage capacity and high power batteries such as lithium batteries. Therefore, the safe use of this battery has become the focus of attention. However, the safety of electric vehicles does not only depe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H39/00
CPCH01H2039/008H01H39/00H01H2239/058
Inventor 埃夫拉尔·博格
Owner 海瑞克里兹
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