Lithium ion battery system, lithium ion battery direct current output control method and device
A lithium-ion battery, lithium-ion battery pack technology, applied in battery circuit devices, secondary batteries, transportation and packaging, etc., can solve problems such as inconvenience in popularization and application
Active Publication Date: 2013-01-09
BEIJING KINGTEC
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Problems solved by technology
The basic idea of the method and device is to ensure that the lithium-ion battery is not over-discharged at any time, for example, when the operating environment of the battery does not meet the required conditions, so as to improve the effectiveness and practicability of the lithium-ion battery system, thereby solving the problem of lithium-ion batteries. When the battery has a large capacity in a single cell and is connected in series to form a high-voltage battery pack, it is inconvenient to popularize and apply in fields such as electric vehicles and mobile communication base stations.
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[0033] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, not to limit the present invention.
[0034] Lithium iron battery uses lithium iron phosphate (LiFePO 4 ) as a cathode material for lithium-ion batteries. In each preferred embodiment of the present invention, the present invention is described by taking an iron-lithium battery as an example of a lithium-ion battery. However, those skilled in the art should understand that other types of lithium-ion batteries can also be used in the present invention, such as other lithium-ion batteries whose positive electrode material is nickel-cobalt-lithium, nickel-cobalt lithium manganate, lithium manganate, and the like.
[0035] figure 1 Exemplary discharge curves for LiFe batteries at different discharge rates are shown. from f...
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The invention discloses a lithium ion battery system. The lithium ion battery system comprises a lithium ion battery pack, a current and voltage feedback module and a direct current output control module, wherein the lithium ion battery pack is used for supplying power for a loader; the current and voltage feedback module is used for acquiring the current and the voltage of the lithium ion battery pack in the discharge process; and the direct current output control module is used for controlling the power supply of the lithium ion battery pack for the loader according to the variation of the current and the voltage of the lithium ion battery pack in the discharge process, thus the over-discharge of the lithium ion battery pack is prevented. The invention also discloses a lithium ion battery direct current output control method and device. According to the invention, the over-discharge is ensured not to occur in the discharge process of the lithium ion battery, thus the non-recoverable discard of the lithium ion battery is avoided.
Description
technical field [0001] The invention relates to the field of mobile communication power supplies, and in particular to a lithium-ion battery DC output control method and equipment. Background technique [0002] Lithium-ion batteries have the advantages of high capacity, high voltage, no pollution, high safety, high energy density and excellent cycle performance, so they have attracted widespread attention and are developing rapidly. Lithium-ion batteries are the development trend of backup power technology for small and medium-sized backup power supplies and harsh environments in the future, and have gradually become the first choice for high-demand backup power solutions. [0003] In the communication industry, lithium-ion batteries are positioned in the application scenarios of miniaturization, decentralization, and harsh environments, and can be used as an effective supplement to lead-acid batteries. [0004] Lithium-ion batteries will be irretrievably scrapped due to on...
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IPC IPC(8): H01M10/0525H01M10/42H02J7/00
CPCY02E60/122Y02E60/10
Inventor 包静何心刚蔡晶贺延敏张乐巩欣刘宝昌
Owner BEIJING KINGTEC