Electric vehicle, power system of the same, and charging method of said power system

A power battery and power system technology, applied in the field of electric vehicles, can solve the problems of large internal resistance of the battery and difficulty in charging, and achieve the effects of saving energy consumption, simple and reliable charging method, and saving charging time

Active Publication Date: 2014-12-31
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the vehicle-mounted power battery works at low temperature, the internal resistance of the battery is large, and charging becomes very difficult.

Method used

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  • Electric vehicle, power system of the same, and charging method of said power system
  • Electric vehicle, power system of the same, and charging method of said power system
  • Electric vehicle, power system of the same, and charging method of said power system

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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PUM

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Abstract

The invention provides a power system for an electric vehicle. The system comprises a power battery; a charging and discharging socket; a bidirectional DC / DC module; a drive control switch; a bidirectional DC / AC module; a motor control switch; a charging and discharging control module; a battery manager; and a controller module connected with the drive control switch, the motor control switch, the charging and discharging control module and the battery manager. The motor control module is used for controlling the drive control switch, the motor control switch and the charging and discharging control module to control the power system to enter the charging and discharging mode, as well as controlling the power battery to perform pulse charging and discharging to heat the power battery when the temperature of the power battery is lower than the preset temperature. When the temperature of the power battery is low, the power system can control the power battery to perform pulse charging and discharging to heat the power battery for temperature rise, so as to activate the power battery. The invention further provides an electric vehicle and a charging method for a power battery of the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a power system for an electric vehicle, an electric vehicle with the power system, and a charging method for a power battery of the electric vehicle. Background technique [0002] With the development of science and technology, environmentally friendly and energy-saving electric vehicles are playing the role of replacing fuel vehicles. However, the popularization of electric vehicles still faces some problems. Among them, high mileage and fast charging technology have become a major issue in the promotion of electric vehicles. problem. [0003] At present, the power batteries of electric vehicles basically use lithium iron phosphate batteries. The performance of lithium iron phosphate batteries is especially suitable for power applications, especially in large discharge rate discharge (5_10C discharge), stable discharge voltage, and safe use (small Combustion, small ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B60L15/00H01M10/44H01M10/615H01M10/625
CPCB60L2240/545Y02T10/7072Y02T90/14B60L53/14B60L53/22B60L50/52B60L53/00B60L53/60B60L58/24B60L58/27B60L53/55B60L53/53H02J2310/48H02J7/02H02J2207/20Y02T10/70Y02T90/12H02J3/322Y04S30/12Y02T90/167H02J5/00Y02T10/92Y04S10/126Y02E60/00Y02T90/16
Inventor 杨广明刘建喻轶龙
Owner BYD CO LTD
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