Energy conversion device, powertrain and vehicle

An energy conversion device and converter technology, applied in the electronic field, can solve problems such as low integration, complex structure, and high cost, and achieve the effects of reducing system cost, high system integration, and high reuse

Active Publication Date: 2022-03-15
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide an energy conversion device, a power system and a vehicle, aiming to solve the problems of complex structure, low integration, large volume and high cost in the overall circuit of the existing motor drive and charging system

Method used

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  • Energy conversion device, powertrain and vehicle
  • Energy conversion device, powertrain and vehicle
  • Energy conversion device, powertrain and vehicle

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0028] The implementation of the present application is described in detail below in conjunction with specific drawings:

[0029] figure 1 The module structure of the energy conversion device provided by the first embodiment of the present application is shown. For the convenience of description, only the parts related to this embodiment are shown, and the details are as follows:

[0030] Such as figure 1 As shown, the energy conversion device 1 provided by the embodiment of the present application includes a motor coil 11 , a bridge arm converter 12 , a bidirectional br...

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Abstract

Energy conversion devices, powertrains and vehicles. In this application, by using an energy conversion device including a motor coil, a bridge arm converter, a bidirectional bridge arm and a first capacitor set driving and charging functions, the energy conversion device can work in a driving mode, a DC charging mode, and an AC charging Mode, and then realize the use of the same system for vehicle motor drive and battery charging, and the multiplexing of capacitors can not only improve the power conversion efficiency and energy utilization rate during DC charging, but also reduce the generation of harmonic currents on the grid side during AC charging noise and pollution to the power grid, improve the power supply quality of the power grid, and absorb the high-frequency switching frequency and high-order harmonics generated by the bridge arm converter in the motor drive, and store energy after boosting through the bridge arm converter. Ensure that the bridge arm converter has a stable and pure DC bus voltage, high degree of component reuse, high system integration and simple structure, thereby reducing system cost and system volume.

Description

technical field [0001] The present application belongs to the field of electronic technology, and in particular relates to an energy conversion device, a power system and a vehicle. Background technique [0002] With the development and rapid popularization of electric vehicles, motor control and battery charging of electric vehicles are becoming more and more important. At present, the motor drive of existing electric vehicles, the AC charging of the battery, and the DC charging of the battery are all independent, and in order to ensure the charging power or drive normally, it is usually necessary to connect the drive circuit, DC charging circuit and AC charging circuit. Set a capacitor in. [0003] However, although the above method can effectively guarantee the normal operation of the motor drive and battery charging of the vehicle, since the motor drive circuit and the battery charging circuit in the above method are independent and irrelevant to each other, and each ci...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B60L53/22B60L53/24H02J7/00H02J7/02H02J7/10H02P27/06H02M7/797
CPCB60L53/22B60L53/24H02J7/02Y02T10/64Y02T10/70Y02T10/7072Y02T90/14
Inventor刘伟冬王超王兴辉
OwnerBYD CO LTD