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Electric vehicle inter-vehicle direct current power transmission system and control method

A technology of power transmission and electric vehicles, applied in the field of electric vehicles, can solve the problems of DC discharge blank, unable to meet the time requirements of road rescue, etc., and achieve the effect of quick rescue

Pending Publication Date: 2018-06-26
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the power transmission between vehicles has not been commercialized. The existing literature and patented technical solutions rely on bidirectional AC / DC converters for vehicle-to-vehicle AC charging, but DC discharge is still blank.
Moreover, only relying on AC mode charging between vehicles cannot meet the time requirements for road rescue. How to coordinate and unify the power transmission system, how to ensure safety and reliability, and how to make users feel convenient and intelligent, the corresponding technology still has room for improvement.

Method used

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  • Electric vehicle inter-vehicle direct current power transmission system and control method

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Effect test

Embodiment 1

[0059] This embodiment provides an electric vehicle inter-vehicle DC power transmission system, which includes a power supply vehicle 100 , a power receiving vehicle 200 and a charging cable 300 .

[0060] The power supply vehicle 100 includes a human-computer interaction device 10, a discharge control device 20, a power battery 30, a discharge DC / DC 40, a discharge relay 50, a DC charging relay 60, a safety monitoring module 70, an auxiliary power relay 80, a storage battery 90, Output port and emergency switch 99.

[0061] The human-computer interaction device 10 can be an instrument of a vehicle, a multimedia device or a user communication terminal, and can at least display a demand confirmation interface 11, a command interface 12 and a prompt warning interface 13, so that the human-computer interaction device 10 can pass the demand The confirmation interface 11 sets the power value or discharge time of the discharge transmission, and at the same time displays the estimate...

Embodiment 2

[0090] This embodiment provides a method for controlling DC power transmission between electric vehicles, including a demand confirmation stage, a start-up stage and a discharge monitoring stage.

[0091] Wherein, the requirement confirmation stage includes:

[0092] S10 , the user inputs the planned transmission power value through the demand confirmation interface 11 , and sends it to the discharge control device 20 and the power battery 30 .

[0093] S11. The discharge control device 20 recognizes whether the charging cable 100 connected to the output port of the power supply vehicle 100 is qualified by detecting the CC1 terminal voltage, and checks the contact temperature and the locking state reported by the safety monitoring module 70 to check the power supply vehicle 100 The fault information reported by the power battery 30, if the above information meets the requirements, then execute step S12; otherwise, the process jumps back to the demand confirmation interface 11,...

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Abstract

The invention discloses an electric vehicle inter-vehicle direct current power transmission system, which comprises an electric power supply vehicle, an electric power receiving vehicle and a chargingcable, wherein the electric power supply vehicle comprises a man-machine interaction device, a discharge control device, a power battery, a discharge DC / DC, a discharge relay, a safety monitoring module, an auxiliary power relay, a storage battery, an output port and an emergency switch; the electric power receiving vehicle comprises a charging relay, a power battery, a charging controller and areceiving port; and the charging cable comprises a discharge connection port, a charging connection port and a transmission cable. According to the power transmission system, direct-current charging can be performed on different types of electric automobiles through the discharge DC / DC; safety and energy monitoring is carried out on the whole power transmission process through the discharge control device, so that a safe and rapid electric vehicle inter-vehicle rescue is realized, and the problem of the residual mileage of the rescue vehicles and the rescued vehicles can be taken into consideration; the charging electric quantity can be coordinated; and convenience is brought to users.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a DC power transmission system and method between electric vehicles. Background technique [0002] In recent years, despite the rapid development of the electric vehicle industry, under the environment where the charging facilities are not perfect in the short term, how to provide road rescue for vehicles with power battery failure has become a concern of users and an unavoidable problem for car companies. The core of this technology lies in the coordinated control of two different types of electric vehicles and their battery management systems, and safe, reliable, convenient and intelligent power transmission through power transmission cables. At present, the power transmission between vehicles has not yet been commercialized. The existing literature and patented technical solutions rely on bidirectional AC / DC converters for vehicle-to-vehicle AC charging, but DC disch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00B60L11/18
CPCH02J7/0029H02J7/0047B60L53/00B60L58/10B60L58/12H02J7/342Y02T10/70Y02T10/7072Y02T90/14
Inventor 曲振宁张天强梁士福贾晓波顾家闻张鹏姜瑞王微
Owner CHINA FIRST AUTOMOBILE
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