Electric vehicle, power system of electric vehicle and charging method for power battery
A power battery and power system technology, applied in the field of electric vehicles, can solve the problems of difficult charging and large internal resistance of the battery, and achieve the effects of simple and reliable charging method, energy saving and cost saving.
Active Publication Date: 2016-09-07
BYD CO LTD
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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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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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The present invention proposes a power system for electric vehicles, including: power battery; charging and discharging socket; bidirectional DC / DC module; drive control switch; bidirectional DC / AC module; motor control switch; charging and discharging control module; battery manager ; The controller module, the controller module is connected with the drive control switch, the motor control switch, the charge and discharge control module and the battery manager, and the controller module is used to control the drive control switch, the motor control switch and the charge and discharge control module to control the power The system enters the charging and discharging mode, and controls 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, make it warm up, and activate the power battery. The invention also 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 e...
Claims
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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