Electric power management method and device for high-temperature situation of battery

A power management device and power management technology, applied in battery circuit devices, circuit devices, emergency protection circuit devices, etc., can solve problems such as impact, capacity decline, volume expansion, and unstable operating characteristics, and achieve the effect of stable operating characteristics

Inactive Publication Date: 2008-10-15
郭献元
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  • Abstract
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Problems solved by technology

[0003] However, one of the disadvantages of lithium batteries in practical applications is that their operating characteristics often show instability in high-temperature environments, which causes abnormal phenomena in the output voltage value and adversely affects the operating functions of the electronic devices it is matched with.
At the same time, lithium batteries are prone to danger under high temperature storage, and there are doubts about capacity decline and volume expansion.

Method used

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  • Electric power management method and device for high-temperature situation of battery
  • Electric power management method and device for high-temperature situation of battery

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Embodiment Construction

[0036] Embodiments of the power management method and device for battery high temperature conditions of the present invention are disclosed in detail below with reference to the accompanying drawings.

[0037] FIG. 1 shows the application of the power management device (such as the part included in the block indicated by reference numeral 100 ) of the battery high temperature condition of the present invention. As shown in the figure, the power management device 100 for battery high temperature condition of the present invention is matched with a battery unit 10 in practical application, especially a rechargeable battery unit, such as a lithium battery unit, and the lithium battery unit 10 is used for example Power is provided to the internal host circuit 20 (hereinafter referred to as "load circuit") of a portable electronic device (such as a digital camera, a mobile phone, a walkman, or a palmtop computer). In actual application, the power management device 100 of the batter...

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Abstract

The invention relates to a method and device for managing the electric power of batteries in a state of high temperature, which can be applied to matching with a battery unit and used for providing the battery unit with an electric power managing function in the state of high temperature. The method and device of the invention are characterized in that the power switch of the circuit of the battery unit is opened to cut off the discharging voltage when the temperature of the operating environment of the battery unit exceeds the value of the upper critical temperature; if the cut-off discharging voltage is higher than the value of the upper critical temperature, the discharging loop is started up to discharge the battery unit. With the characteristic, the battery unit can still have comparatively stable operating property and the property of storing charges under high temperature when the temperature of the operating environment is over high.

Description

technical field [0001] The present invention relates to a battery power management technology, in particular to a power management method and device for battery high temperature conditions, which can be applied to a battery unit, such as a lithium battery unit, to provide power management for the battery unit in high temperature conditions Features. Background technique [0002] Lithium battery is a rechargeable battery, which has been widely used in various electronic devices, especially portable electronic devices, such as digital cameras, mobile phones, walkman audio devices, palmtop computers, etc., to power these electronic devices The device provides electricity. The advantages of lithium batteries are that they are small in size but large in capacity, have no capacity storage effect, and have an extremely low rate of power loss when not in use. [0003] However, one of the disadvantages of lithium batteries in practical applications is that their operating character...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02H7/18H01M10/44
CPCY02E60/10
Inventor 郭献元
Owner 郭献元
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