Voltage conversion device and method for electric vehicle and electric driving system

An electric drive system and voltage conversion technology, applied in electric vehicle charging technology, output power conversion devices, electric vehicles, etc., can solve the problems of high unit cost, increased vehicle cost, unfavorable vehicle layout and light weight, etc. , to achieve the effect of saving charging costs, reducing the weight of the vehicle, and optimizing the layout of the vehicle

Pending Publication Date: 2021-04-30
NIO TECH ANHUI CO LTD
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  • Claims
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Problems solved by technology

[0003] As far as power batteries are concerned, when switching from 400V to 800V platforms, in order to be compatible with 400V charging equipment, an existing solution is to add a step-up DC/DC transformer to charge at a 400V DC charging pile At this time, the voltage of the charging pile will not be directly applied to the power battery terminal, but the power battery will be charged a

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  • Voltage conversion device and method for electric vehicle and electric driving system
  • Voltage conversion device and method for electric vehicle and electric driving system
  • Voltage conversion device and method for electric vehicle and electric driving system

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[0015]Specific details are proposed in the following description to provide a thorough understanding of the present invention. However, those skilled in the art will clearly known that embodiments of the present invention can be implemented even without these specific details. In the present invention, specific digital references, such as "first components", "second device", and the like. However, specific digital references should not be understood as must be subject to its literal order, but should be understood as "first components" different from "second components".

[0016]The specific details presented in the present invention are merely exemplary, and the specific details can be varied, but still fall within the spirit and scope of the invention. The term "coupling" is defined as an interconnect connection to the assembly directly or indirectly connected to the component through another component.

[0017]A preferred embodiment of a method, system, and apparatus suitable for implemen

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Abstract

The present invention relates to a voltage conversion device for an electric vehicle, comprising: an inverter unit comprising three batches of a plurality of switch assemblies for providing three-phase current required by a motor of the electric vehicle, and a first input end and a second input end; a third input end, connected with the three-phase output end of the inverter unit in a configurable manner; wherein the inverter unit is configured to convert a second direct-current voltage input through the third input end and the second input end into a first direct-current voltage so as to provide the first direct-current voltage between the first input end and the second input end. According to the voltage conversion device, the charging cost of the electric vehicle is saved, the economical efficiency of whole vehicle manufacturing is improved, the weight of the whole vehicle is reduced, and whole vehicle layout optimization is facilitated.

Description

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Claims

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Application Information

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Owner NIO TECH ANHUI CO LTD
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