Electric vehicle driving and charging integrated circuit based on single-phase filter inductor

A filter inductor and electric vehicle technology, which is applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of many external inductances, low integration, increased system volume and weight, etc., to achieve large equivalent inductance, Simple principle and flexible implementation

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inductance is a key component that affects the volume, weight, and cost of the charger. The above-mentioned solution has more external inductance, which increases the volume and weight of the system, and the integration level is not high.

Method used

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  • Electric vehicle driving and charging integrated circuit based on single-phase filter inductor
  • Electric vehicle driving and charging integrated circuit based on single-phase filter inductor
  • Electric vehicle driving and charging integrated circuit based on single-phase filter inductor

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Such as figure 1 As shown, the electric vehicle driving and charging integrated circuit based on single-phase filter inductance provided in this embodiment includes a power battery 1, a bidirectional DC / DC converter 2, a three-leg DC / AC converter 3, and a three-phase motor 4. Auxiliary inductor 5, changeover contact switch 6, single contact switch 7 and AC interface 8; the three bridge arms of the three-leg DC / AC converter 3 are respectively the first, second and third bridge arms; The three-phase motor 4 includes three stator windings, namely the first, second, and third stator windings, and each stator winding has two terminals; the transfer contact switch 6 includes a common contact and two transfer contacts point, which are the first and second contacts b1 and b2 respectively; the AC interface 8 has three connection terminals, which are respectively the first, second and third connection terminals c1, c2 and c3; the bidirectional DC / DC converter 2 The positive and ...

Embodiment 2

[0066] Such as Figure 9 As shown, the electric vehicle driving and charging integrated circuit based on single-phase filter inductance provided in this embodiment includes a power battery 1, a bidirectional DC / DC converter 2, a three-leg DC / AC converter 3, and a three-phase motor 4. Auxiliary inductance 5, conversion contact switch 6, first single-contact switch 7A, second single-contact switch 7B and AC interface 8; the three bridge arms of the three-leg DC / AC converter 3 are respectively The first, second, and third bridge arms; the three-phase motor 4 includes three stator windings, which are respectively the first, second, and third stator windings, and each stator winding has two terminals; the changeover contact switch 6 It includes a common contact and two conversion contacts, which are respectively the first and second contacts b1 and b2; the AC interface 8 has three terminals, which are respectively the first, second and third terminals c1, c2 and c3; The positive a...

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Abstract

The invention discloses an electric vehicle driving and charging integrated circuit based on a single-phase filter inductance, which is realized in two ways of parallel connection and series connection. Parallel implementations include power batteries, bidirectional DC / DC converters, three-leg DC / AC converters, three-phase motors, auxiliary inductors, transfer contact switches, single-contact switches, and AC interfaces; series implementations include power A battery, a bidirectional DC / DC converter, a three-leg DC / AC converter, a three-phase motor, an auxiliary inductor, a changeover contact switch, a first single-contact switch, a second single-contact switch, and an AC interface. The circuit of the present invention can realize three-phase input fast charging only by externally connecting a one-phase filter inductor, which greatly reduces the volume and weight of the charging system, and has the advantages of high power density, simple principle, and high reliability; in addition, the circuit implementation method Flexible and wide application range: The parallel implementation uses fewer switches and the circuit is simpler, while the series implementation has a larger equivalent inductance and better filtering effect.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle charging, in particular to an electric vehicle driving and charging integrated circuit based on a single-phase filter inductor. Background technique [0002] As is known in the industry, high power density and high reliability motor drive and battery charging systems are the key technology platforms supporting the development of electric vehicles. At present, most electric vehicle drive motors use three-phase permanent magnet synchronous motors or three-phase induction motors; there are two main types of battery charging systems: off-board charging type and on-board charging type. For off-board charging type, the charging pile is built outside the vehicle , can directly provide DC current to the power battery of electric vehicles. Since it does not occupy the volume of the vehicle and increase the weight of the vehicle, it can be designed with a higher power level for fast charging of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L50/60B60L53/22B60L53/24B60L15/00B60K1/00
CPCB60L50/60B60L53/22B60L53/24B60L15/007B60K1/00Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 杜贵平雷雁雄李土焕陈思强
Owner SOUTH CHINA UNIV OF TECH
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