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Low-temperature battery charging method

A charging method and battery temperature technology, applied in secondary battery charging/discharging, secondary battery, secondary battery repair/maintenance, etc., can solve problems such as limited improvement effect, achieve high charging efficiency and prolong battery life

Inactive Publication Date: 2013-05-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is limited by the environment, and the improvement effect is very limited

Method used

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Embodiment Construction

[0019] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.

[0020] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the descrip...

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Abstract

The invention discloses a low-temperature battery charging method which comprises the following steps that: when the battery temperature is lower than a temperature threshold, a battery is subjected to pulsed charging; and when the battery temperature reaches the temperature threshold, the battery is charged normally. The low-temperature battery charging method provided by the invention can be used for charging a battery at a low temperature according to the super long cycle service of the novel battery and avoidance of side effects of separation out of lithium ions at a negative electrode in high-magnification charging at a low temperature and the like, and the battery can be charged at a low temperature to a degree which is equivalent to that of charging at a normal temperature. The low-temperature battery charging method has the advantages of safety, reliability, high charge efficiency and prolongation of service life of the battery.

Description

technical field [0001] The invention belongs to the technical field of battery charging, and in particular relates to a battery charging method at low temperature. Background technique [0002] With the increasingly prominent problems of environmental pollution, energy crisis, and greenhouse effect, people are paying more and more attention to rechargeable batteries. Whether it is an electric vehicle, a storage power station, or a mobile phone or a laptop, batteries are vital energy storage components. At present, the battery charging method is mainly constant current to constant voltage charging, but the low temperature charging of the battery has always been a problem that is difficult to break through. [0003] For lithium-ion batteries using graphite as the negative electrode material, due to the increase in battery internal resistance at low temperatures, especially when the temperature is lower than 0 degrees, charging can easily lead to side reactions such as the pre...

Claims

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Application Information

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IPC IPC(8): H01M10/44H01M10/50
CPCY02E60/12Y02E60/10
Inventor 韩雪冰卢兰光李建秋欧阳明高
Owner TSINGHUA UNIV
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