Heating method of lithium ion battery, oscillation power supply and battery management system
A technology of lithium ion battery and heating method, applied in the direction of secondary battery, secondary battery repair/maintenance, circuit, etc., can solve the problems of uneven heating and damage to the battery, and achieve the effect of prolonging the service life
Inactive Publication Date: 2022-02-18
SVOLT ENERGY TECHNOLOGY CO LTD
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[0006] The main purpose of the present invention is to provide a lithium-ion battery heating method, an oscillating power supply, and a battery management system to solve the problems in the related art that heating lithium-ion batteries in a low-temperature environment leads to uneven heating and damage to the battery cells
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[0024] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0026] It should be noted that the terms "first...
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The invention discloses a heating method of a lithium ion battery, an oscillation power supply and a battery management system. The method comprises the following steps: collecting the temperature of the lithium ion battery, and determining whether the lithium ion battery enters a heating stage or not according to the temperature of the lithium ion battery; under the condition that it is determined that the lithium ion battery enters the heating stage, determining target performance parameters of oscillation current according to the temperature of the lithium ion battery, wherein the target performance parameters at least comprise the positive amplitude and the negative amplitude of the oscillation current, the frequency of the oscillation current and the duty ratio of the oscillation current; and applying oscillating current with the target performance parameters to the lithium ion battery. According to the invention, the problems of non-uniform heating and battery cell damage caused by heating the lithium ion battery in a low-temperature environment in the prior art are solved.
Description
technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a heating method for lithium-ion batteries, an oscillating power supply, and a battery management system. Background technique [0002] In related technologies, lithium-ion batteries quickly occupy the new energy highlands with many advantages such as high energy density, high power density, and low self-discharge, becoming a leader in the battery industry. Although lithium-ion batteries have penetrated into all walks of life by virtue of their advantages, at low temperatures, the reactivity of the internal materials that make up lithium-ion batteries is reduced, resulting in a serious decline in service life. At the same time, during the charging process, due to the increase in polarization, the charged power is extremely low or even impossible to charge. If it is charged forcibly, lithium ions will be reduced to produce metal lithium crystals attached to the surface of the ...
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IPC IPC(8): H01M10/42H01M10/615H01M10/633
CPCH01M10/615H01M10/42H01M10/425H01M10/633H01M2010/4271Y02E60/10
Inventor 尹海旭苏树发刘道淦
Owner SVOLT ENERGY TECHNOLOGY CO LTD