Capacitor used for electric driving and manufacturing method thereof
A manufacturing method and capacitor technology, applied in the field of capacitors, can solve the problems of limited space for electric drive capacitors, increased energy density, large self-inductance ESL and equivalent series resistance ESR, etc., to improve space utilization and capacitor energy density , Reduce the effect of ESL and ESR
Active Publication Date: 2017-10-24
上海赛特康贸易有限公司
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Problems solved by technology
[0003]Due to the small interior space of the car, there is limited space for electric drive capacitors. Generally, snubber capacitors are removed from the circuit system, and the existing capacitors still have self-inductance ESL and The equivalent series resistance (ESR) is relatively large, and the round shape of the capacitor core leads to low space utilization, and the energy density needs to be improved
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Embodiment 2
[0044] The specification of the electric driving capacitor in the second embodiment is 600V-390μF.
[0045] Such as Figure 3 ~ Figure 5 As shown, the capacitor includes two 195μF flat capacitor cores connected in parallel to form a capacitor bank 2, a busbar assembly, a casing 1 and a potting resin 8. The busbar assembly has two main bodies bent at 90° Composed of the first copper bar and the second copper bar, the first mounting plate 4 of the first copper bar is laminated on the second mounting plate 6 of the second copper bar, most of the laminated parts overlap, and the busbar insulation layer (Fig. not shown in ) inserted between the first mounting plate 4 and the second mounting plate 6, the first connecting plate 3 and the second connecting plate 5 of the vertical part of the first copper bar and the second copper bar are parallel and symmetrical, on the first connecting plate 3 and the second connecting board 5 have the same number of first lead-out ends 17 and secon...
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Abstract
The invention provides a capacitor used for electric driving and a manufacturing method thereof. The capacitor comprises a shell, a capacitor group, a busbar component, a potting resin and a top sealing resin, wherein the shell is a structure whose one end is opened; the capacitor group is arranged in the shell; a busbar component is arranged on the capacitor group, and a capacitance insulating layer is arranged between the busbar component and the capacitor group; the potting resin is filled between an inner wall of the shell and the capacitor group; and the top sealing resin covers the capacitor group located at an opening of the shell. Compared to the prior art, by using the capacitor and the method of the invention, there are the following advantages that through using a specially-designed busbar as a leading-out terminal, a capacitor ESL and an ESR can be effectively reduced; the capacitor group consists of a plurality of same-size and flat capacitor cores without hard core rods which are connected in parallel; and through a design of the capacitor shell, a space utilization rate and capacitor energy density are effectively increased.
Description
technical field [0001] The invention relates to the field of capacitors, in particular to an electric drive capacitor and a manufacturing method thereof. Background technique [0002] With the development of pure electric vehicles and hybrid electric vehicles, capacitors for electric drive have also been greatly developed. In addition to supercapacitors for storing electric energy, electric vehicles also have electric drive 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. [0003] Due to the small space inside the car, there is limited space for electric drive capacitors. The snubber capacitors are generally removed from the circuit system. The existing capacitors still have large self-inductance ESL and equivalent series resistance ESR. The round shape of the capacitor core results in space The utilization rate is low, and the energy density nee...
Claims
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Login to View More IPC IPC(8): H01G4/236H01G4/224
CPCH01G4/224H01G4/236
Inventor 汤泽波庞猛张献伟
Owner 上海赛特康贸易有限公司