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Low-cost battery power estimation method

A battery power, low-cost technology, applied in the field of low-cost battery power estimation, can solve the problem of increasing the overall cost of the solution, achieve the effect of small error, reduce production cost, and accurate calculation results

Inactive Publication Date: 2018-12-07
厦门芯阳科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in order to realize the current sampling in the circuit, it is necessary to increase the sampling resistance, which will bring additional power loss. The step-up circuit and the sampling current circuit not only need the DC-DC module to realize, but also require the single-chip microcomputer to have an AD acquisition function module, which increases the solution. overall cost of

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments 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 creative efforts fall within the protection scope of the present invention.

[0026] "First", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "One end", "the other end" and other similar words only indicate that the orientation or positional relationship of the device or element is based on t...

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Abstract

The invention provides a low-cost battery power estimation method which comprises discharging, during the first use, a battery until the power of the battery is completely consumed; estimating the charging current and the discharging current of the battery, and recording charging duration when the battery is in a charged state; and recording discharging duration while the battery is in a discharged state. The low-cost battery power estimation method estimates the charging current and the discharging current of the battery, and calculates the battery power according to the battery charging duration and the discharge duration. Thus, there is no need to design matching hardware required by high-precision sampling current. The circuit only needs an ordinary single-chip microcomputer, does notneed to stabilize the single-chip microcomputer power supply by a step-up and step-down module, and does not need a current sampling loop, which greatly reduces production cost.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a low-cost battery power estimation method. Background technique [0002] With the development of science and technology, batteries have become an indispensable power source and are widely used in portable electrical products such as mobile phones, notebook computers, hair clippers and shavers. Generally speaking, for the convenience of use, electric products usually have a battery power detection function to provide information about the remaining battery power to the user. [0003] Existing nickel-metal hydride batteries and nickel-cadmium batteries usually use current integration to realize the calculation of battery power, that is, to accurately monitor the current flowing into and out of the battery, so as to accurately determine the remaining capacity of the battery. However, because this algorithm needs to accurately determine the magnitude of the current, it i...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 刘双春刘家斌魏肃柴智黄志强刘全喜
Owner 厦门芯阳科技股份有限公司
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