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Electric automobile smooth capacitor

A technology for smoothing capacitors and electric vehicles, applied in the field of capacitors, can solve the problems of large equivalent series resistance and equivalent series inductance, poor anti-vibration performance, poor high temperature and low temperature performance, etc., to reduce the equivalent series resistance and equivalent Series inductance, suppression of common mode interference, good effect of anti-vibration

Inactive Publication Date: 2015-10-07
ANHUI SAFE ELECTRONICS
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AI Technical Summary

Problems solved by technology

[0003] 1. Unable to suppress common mode interference;
[0004] 2. The equivalent series resistance (ie ESR) and equivalent series inductance (ie ESL) are large;
[0005] 3. Poor weather resistance, that is, poor high temperature and low temperature resistance, easy moisture absorption, and poor vibration resistance;

Method used

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  • Electric automobile smooth capacitor
  • Electric automobile smooth capacitor
  • Electric automobile smooth capacitor

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Embodiment Construction

[0029] The content of the present invention will be described below in conjunction with specific embodiments.

[0030] Such as Figure 1 to Figure 3 As shown, it is a structural schematic diagram of a smoothing capacitor for an electric vehicle according to the present invention. A smoothing capacitor for an electric vehicle according to the present invention includes: a main capacitor bank 1 and two lead-out terminals 2 respectively connected to the two poles of the main capacitor bank 1, and two series connection terminals 2 are arranged between the two lead-out ends 2. Then Y capacitors 3 connected in parallel with the main capacitor bank 1, between the two Y capacitors 3 is a neutral point leading ground terminal 4. Specifically, the capacitance of the main capacitor bank 1 is 600 μF, the capacitance of the two Y capacitors 3 is 0.175 μF, and a discharge resistor R is also connected in parallel between the two poles of the main capacitor bank 1, and the discharge resistor...

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Abstract

The invention discloses an electric automobile smooth capacitor, comprising a main capacitor set, and two leading-out terminals respectively connected to two poles of the main capacitor set; two Y capacitors which are in parallel connection with the main capacitor set after series connection are arranged between the two leading-out terminals; a neutral point leading-out ground terminal is arranged between the two Y capacitors. The main capacitor set is composed of a plurality of capacitor element in parallel connection. The electric automobile smooth capacitor can restrain common mode interference, and has the characteristics of smaller ESR and ESL, and good weather fastness.

Description

technical field [0001] The invention relates to a smoothing capacitor for an electric vehicle, belonging to the technical field of capacitors. Background technique [0002] With the development of pure electric vehicles and hybrid electric vehicles, capacitors for electric vehicles have also been greatly developed. In addition to supercapacitors for storing electric energy, electric vehicles also have smoothing capacitors, whose main purpose is to smooth and filter various irregular harmonics in the electric vehicle power system and improve the operating environment of the power system. In the actual use of smoothing capacitors for electric vehicles in the prior art, there are mainly the following disadvantages: [0003] 1. Unable to suppress common mode interference; [0004] 2. The equivalent series resistance (ie ESR) and equivalent series inductance (ie ESL) are large; [0005] 3. Poor weather resistance, that is, poor high temperature and low temperature resistance, ...

Claims

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Application Information

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IPC IPC(8): H01G4/38H01G4/224H01G4/228
Inventor 汤泽波周峰
Owner ANHUI SAFE ELECTRONICS
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