Electrolytic capacitor with thermal protection function and circuit system
An electrolytic capacitor and thermal protection technology, applied in electrolytic capacitors, liquid electrolytic capacitors, emergency protection circuit devices, etc., can solve problems such as poor reliability, prevent continuous operation, improve reliability, and avoid unexpected problems.
Pending Publication Date: 2020-12-04
GUANGDONG CHANGHONG ELECTRONICS
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Problems solved by technology
[0003] However, the temperature protection circuit detects the working environment temperature of the electrolytic capacitor, not the actual temperature of the electrolytic capacitor. There is a difference between the two, which may lead to the situation that the actual temperature of the electrolytic capacitor has exceeded the threshold, but the temperature protection circuit has not been triggered. Reliable Poor sex
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[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0022] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ...
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The invention discloses an electrolytic capacitor with a thermal protection function and a circuit system. The electrolytic capacitor comprises a shell body which has an accommodation cavity, a capacitor assembly arranged in the accommodating cavity, an electrode pin arranged on the shell body, connected with the capacitor assembly and capable of being connected with an external circuit, a temperature sensing piece arranged in the accommodating cavity, and a connecting pin arranged on the shell body, connected with the temperature sensing piece and capable of being connected with an external circuit. According to the electrolytic capacitor, the capacitor assembly and the temperature sensing piece are both arranged in the accommodating cavity of the shell body, so that the temperature sensing piece can detect the actual working temperature of the capacitor assembly, and the external circuit can obtain the actual working temperature of the capacitor assembly according to the voltage or current of the temperature sensing piece; therefore, the working state of the capacitor assembly can be stopped or adjusted according to the actual working temperature of the capacitor assembly, the accidental problem caused by spraying of the electrolyte in the capacitor assembly is avoided, and the reliability is improved.
Description
technical field [0001] The invention relates to the field of electrolytic capacitors, in particular to an electrolytic capacitor with thermal protection function and a circuit system. Background technique [0002] Due to the structural characteristics of electrolytic capacitors, when the temperature is too high, the problem of electrolytic capacitor bursting is likely to occur if the electrolytic capacitor is working for a long time. Generally, the electrolytic capacitor is provided with explosion-proof lines to reduce the impact of electrolytic capacitor bursting. However, even if the anti-explosion pattern is installed on the electrolytic capacitor, opening the anti-explosion pattern will cause the electrolyte in the electrolytic capacitor to spray out. Due to the high temperature of the electrolyte, it is easy to cause flammable substances to catch fire or high temperature to damage other components, posing a safety risk. Therefore, there is also a way to install a temper...
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IPC IPC(8): H01G9/00H01G9/145H01G9/28H02H7/16H02H5/04
CPCH01G9/0003H01G9/28H01G9/145H02H7/16H02H5/04
Inventor 钟权蒋吉强杨宣华吴翠苹
Owner GUANGDONG CHANGHONG ELECTRONICS