A battery self-heating method and device

Abstract

This application discloses a battery self-heating method and device. The device includes a battery, a charge pump and a controller. By controlling the charge pump, the charge pump can be charged or discharged. When the status information indicates that the battery needs to be self-heated, the controller controls the charge pump to alternately perform the charging and discharging process, so that the battery correspondingly alternately performs the discharging and charging process to generate heat and realize self-heating. The battery self-heating method and device disclosed in the embodiments of the present invention can automatically control the charge pump to alternately charge and discharge when the battery temperature is low, so that the battery itself can also perform the corresponding discharge and charge process. Since the battery itself has internal resistance, The process of charging and discharging will cause the battery to generate heat, which has the effect of heating itself. This self-heating method of the battery does not need external source-containing equipment, and can be self-heated anytime and anywhere according to the need, which greatly facilitates the use of users.

Description

technical field [0001] The present invention relates to battery management technology, more specifically, to a battery self-heating method and device. Background technique [0002] As the energy supply device of new energy vehicles, battery is of great significance to promote the development of new energy vehicle technology because of its stable and reliable operation. In general, the performance of batteries will drop significantly in low temperature environments. In order to ensure the normal use of the battery at low temperature, it is necessary to heat the battery to reach a suitable working temperature range. [0003] At present, one way to heat the battery is to load the battery with an alternating current, so that the battery generates heat under the action of the alternating current, thereby achieving a self-heating effect. However, this method of using AC current to self-heat the battery requires an external source-containing device to generate AC current, which i...

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Problems solved by technology

However, this method of using AC current to self-heat the battery requires the use of external source-containing equipment to generate AC current, which is difficult to perform without an external power source.

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