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Bidirectional charging and discharging type portable battery replacing method and system

A technology of charging and discharging and electricity method, which is applied in the field of portable battery replacement method and system, can solve the problems of energy waste and high cost, and achieve the effect of improving utilization rate and avoiding waste

Pending Publication Date: 2022-02-11
SHENZHEN IMMOTOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide a two-way charging and discharging portable battery replacement method and system, aiming to solve the problems of energy waste and high cost in the traditional electric vehicle range extension method

Method used

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  • Bidirectional charging and discharging type portable battery replacing method and system
  • Bidirectional charging and discharging type portable battery replacing method and system
  • Bidirectional charging and discharging type portable battery replacing method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1 It shows a schematic diagram of a two-way charging and discharging portable battery replacement method provided by the embodiment of the present application. In this embodiment, the method includes the following steps:

[0051] S1. The electric vehicle determines the electric quantity of the electric vehicle battery and the portable battery and the operating state of the electric vehicle;

[0052] S2. The electric vehicle controls the bidirectional DC / DC converter according to the power of the electric vehicle battery and the portable battery and the operating state of the electric vehicle, so that the portable battery charges the electric vehicle battery, or the electric vehicle battery charges the portable battery;

[0053]S3. The electric vehicle receives the real-time power of the portable battery of the battery of the electric vehicle through a bidirectional DC / DC converter.

[0054] Optionally, the electric vehicle can be connected to the communication l...

Embodiment 2

[0073] In order to better understand the above-mentioned embodiment 1, the embodiment 1 of the present application will be further described through the embodiment 2 below.

[0074] Optionally, in this embodiment, the first preset power threshold can be set as 20%, and the second preset power threshold can be set as 95%. In actual operation, the first preset power threshold and the second preset The power threshold can be set to any value between 0% and 100%, and the first preset power threshold should be smaller than the second preset power threshold. In a specific implementation plan, for the convenience of operation, the second The preset power threshold is set to 100%. At the beginning of driving, the battery power of the electric vehicle is 100%, which is greater than the first preset power threshold and the second preset power threshold. At this time, the bidirectional DC / DC converter converts The energy feedback power is charged into the portable battery through the ba...

Embodiment 3

[0083] Such as image 3 As shown, the bidirectional DC / DC converter 2 obtains the voltage and power of the portable battery 1 and the electric vehicle battery 3 in real time through the communication cable. The information is transmitted to the electric vehicle through the bidirectional DC / DC converter 2 via the vehicle bus. The electric vehicle judges the driving state of the electric vehicle based on other relevant parameters. When the vehicle is in the driving state, the driving motor decelerates from high speed to low speed In the process, due to the mechanical inertia of the motor, regenerative energy will be generated, which can be recharged into the battery of the electric vehicle through the energy feedback device of the motor controller to realize energy recovery.

[0084] When the electric quantity of the electric vehicle battery 3 acquired by the bidirectional DC / DC converter 2 indicates that the electric quantity of the electric vehicle battery is less than or equa...

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PUM

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Abstract

The invention discloses a bidirectional charging and discharging type portable battery replacing method and system. The method comprises the steps that an electric vehicle obtains the electric quantity of an electric vehicle battery and the electric quantity of a portable battery through a controller or a battery management system; and the portable battery charges the electric vehicle battery or the electric vehicle battery charges the portable battery according to the electric quantity of the electric vehicle battery and the electric quantity of the portable battery. Through the bidirectional DC / DC converter, the portable battery can supplement electricity to the electric vehicle battery, operation feedback energy of the electric vehicle can be stored to the portable battery in reverse, and energy consumption is avoided. Meanwhile, the portable battery can be charged while the battery of the electric vehicle is charged in the charging process, so that the utilization rate of the portable battery is further improved.

Description

technical field [0001] The application belongs to the technical field of electric vehicle range extension, and in particular relates to a method and system for two-way charging and discharging of portable batteries. Background technique [0002] At present, as a means of transportation, electric vehicles can meet the current travel requirements of people due to their environmental protection, greenness and low cost, and have less impact on the environment than traditional fuel vehicles. But current electric vehicle is owing to be subjected to the limitation of the capacity of power battery pack, generally can only travel shorter mileage, comparatively inconvenient in long-distance travel. [0003] In order to solve the above problems, the existing common solutions include installing and replacing portable batteries in the battery exchange cabinet or replacing electric vehicle batteries at the battery exchange station to achieve the purpose of increasing the battery capacity ...

Claims

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Application Information

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IPC IPC(8): B60L53/22B60L58/12B60L58/18B60L50/60
CPCB60L53/22B60L58/12B60L58/18B60L50/66B60L2210/10B60L2240/54Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 黄瑞光唐梅宣沈剑黄嘉曦
Owner SHENZHEN IMMOTOR TECH CO LTD