The invention relates to a battery heating method, a battery heating system and an electric vehicle comprising the battery heating system, and is characterized in that the battery heating method comprises the following steps: 1) when the battery system is charged, the temperature of each part of a battery pack module of the battery system is collected; and 2) according to the collected temperature and a preset condition, external heating, cyclic pulse charging or conventional charging are performed on a battery pack module of the battery system. The heating method is divided into three stages, the first stage is only external heating but not charging, the second stage comprises a plurality of continuous pulse charging cycles, and in the stage phase, pulse charging is stopped for regular charging. According to the method, the heating power of the battery cell can be further improved by combining a special charging process, so that self-heating is achieved, the heating efficiency is high, the temperature consistency is good, and compared with a traditional self-heating mode, additional energy storage devices such as batteries or capacitors and inductors do not need to be added; the method can be widely applied to the field of electric automobiles.
本发明涉及一种电池的加热方法、加热系统及含有该加热系统的电动汽车,其特征在于,电池的加热方法包括以下内容:1)当对电池系统进行充电时,采集电池系统的电池包模组各部位的温度;2)根据采集的温度和预先设定的条件,对电池系统的电池包模组进行外部加热、循环脉冲充电或常规充电,本发明的加热方法分三个阶段,第一阶段只进行外部加热不充电,第二阶段包括多个连续脉冲充电循环,第三阶段停止脉冲充电进行常规充电,本发明结合特殊的充电流程能够进一步提高电芯自身发热功率从而实现自加热,加热效率高、且温度一致性好,相对于传统的自加热方式,无需增加额外的电池或电容电感等储能器件,可以广泛应用于电动汽车领域中。
Battery heating method, a battery heating system and an electric vehicle comprising battery heating system
电池的加热方法、加热系统及含有该加热系统的电动汽车
2021-06-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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