A method for estimating battery charge and discharge power and a power correction method for power-on

A technology for discharging electricity and battery electricity, which is applied in the direction of measuring electric variables, measuring electricity, measuring devices, etc., can solve problems such as low voltage accuracy, large voltage fluctuations, and large electric quantity fluctuations, so as to solve electric quantity fluctuations and improve accuracy degree of effect

Active Publication Date: 2021-04-06
GUANGDONG TRANSTEK MEDICAL ELECTRONICS CO LTD
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Problems solved by technology

The voltage method can save cost and layout space, but in the use of equipment, due to large voltage fluctuations, the calculated power fluctuations are large
In addition, as the battery ages, the full voltage of the battery will gradually decrease, which will cause the calculated power of the battery to be smaller than the actual power, which will affect the battery life of the device.
Therefore, the voltage method is less accurate and has a greater impact on user experience

Method used

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  • A method for estimating battery charge and discharge power and a power correction method for power-on
  • A method for estimating battery charge and discharge power and a power correction method for power-on
  • A method for estimating battery charge and discharge power and a power correction method for power-on

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Embodiment Construction

[0055] Attached below Figure 1-Figure 8 The technical scheme of the present disclosure is described in detail with the examples.

[0056] see figure 1 , a battery charge estimation method, comprising the following steps:

[0057] S101: Collect the battery voltage at the beginning of the current power estimation cycle and the battery voltage saved at the end of the previous power estimation cycle through the ADC;

[0058] In this step, the battery voltage saved at the end of the previous power estimation cycle is used as the initial voltage of this power estimation cycle, and by querying Figure 5 The charging curve shown in the figure obtains the battery power stored at the end of the previous power estimation cycle as the initial battery power at the beginning of the current power estimation cycle.

[0059] S102: Judging whether the battery voltage is greater than the threshold voltage Uct at the beginning of the power estimation cycle, if yes, go to step S103; otherwise,...

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Abstract

The present disclosure discloses a method for estimating the charge and discharge capacity of a battery. The disclosure also discloses a method for correcting battery power when the battery is turned on. The disclosure combines the voltage and the charge and discharge state to estimate the charge and discharge current to obtain the power, which is closer to the real charge and discharge curve; it can solve the power fluctuation caused by the large voltage fluctuation, and improves the measurement accuracy of the battery power at low cost.

Description

technical field [0001] The disclosure belongs to the field of batteries, and in particular relates to a method for estimating battery charge and discharge power and a power correction method for power-on. Background technique [0002] Battery power is an important indicator of an electronic device. Through the battery power, a user can obtain the current power state of the electronic device and determine whether to charge it. [0003] At present, there are mainly coulomb counting method and voltage method for detecting the battery power of mobile portable devices. Among them, the coulomb counting method mainly detects the charge and discharge current by installing a current detection module in the device, and then integrates the current to obtain the battery power. Although the coulomb counting method can obtain relatively more accurate battery power, it needs to add additional current detection devices, resulting in increased hardware costs and occupied layout space, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/388
CPCG01R31/388
Inventor 不公告发明人
Owner GUANGDONG TRANSTEK MEDICAL ELECTRONICS CO LTD
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