Temperature control method of low-temperature lithium battery heating device

A temperature control method and low-temperature lithium battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of poor temperature control effect and energy saving effect, achieve good customer experience, prolong the service cycle life, prolong Effects on service life and safety
CN112928359APending Publication Date: 2021-06-08LIAONING KAIXIN NEW ENERGY TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIAONING KAIXIN NEW ENERGY TECH
Publication Date
2021-06-08

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Abstract

The invention provides a temperature control method of a low-temperature lithium battery heating device, which comprises the following steps that different heating start and stop conditions are set when a battery is in different charging and discharging states, and when the battery is in the discharging state, the starting and stopping conditions of the heating device need to consider the temperature of a battery core, the residual capacity of the battery and the minimum voltage of a single string of batteries at the same time. The lithium ion separation and dendritic crystal caused by low-temperature charging are avoided, the safety of the battery is improved, when the battery is stored and standby, under the condition of minimum energy consumption, it is guaranteed that after a rider changes the battery, the discharging power of a battery pack is strong, the riding use experience is powerful, and meanwhile the service cycle life of the battery pack can be prolonged.
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Description

technical field

[0001] The invention relates to the technical field of lithium batteries, in particular to a temperature control method for a low-temperature lithium battery heating device. Background technique

[0002] In order to improve the low-temperature performance of the battery, there is now a method of adding a heating device to the battery to heat the battery in a low-temperature environment. For example, the Chinese patent with the publication number CN 207852865 U discloses a low-temperature battery pack. A heating device is added, and the temperature sensor built into each battery is detected by the battery BMS to control the heating temperature.

[0003] However, we found in actual use that the temperature control effect and energy-saving effect of general heating temperature control devices are not good. Therefore, we have developed a temperature control method for heating devices for low-temperature lithium batteries to achieve lower energy consumption. The ...

Claims

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