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Method and device for detecting configuration error of rated capacity of battery

A technology of rated capacity and detection method, which is applied in the direction of measuring devices, secondary batteries, and measuring electrical variables, etc., can solve problems such as safety problems, error-prone, and affecting battery charge and discharge control, and achieve the effect of life prevention

Active Publication Date: 2013-01-30
HUAWEI DIGITAL POWER TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Due to the differences in the configuration of battery capacity in different application scenarios, battery replacement and maintenance, natural consumption and other reasons, artificial configuration of battery capacity is prone to errors, and the calculation of the remaining capacity of the battery and the prediction of the life of the battery is generated. A large deviation will affect the charge and discharge control of the battery, thereby affecting the battery life, and even causing safety problems

Method used

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  • Method and device for detecting configuration error of rated capacity of battery
  • Method and device for detecting configuration error of rated capacity of battery
  • Method and device for detecting configuration error of rated capacity of battery

Examples

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Embodiment 1

[0025] Embodiment 1 of the present invention provides a detection method for battery capacity configuration errors, the flow of which is as follows figure 1 As shown, the method includes:

[0026] Step 101, measuring and recording the actual voltage of the battery after different discharge times;

[0027] Step 102, obtaining the theoretical voltage after different discharge times under the current discharge current and the currently configured rated capacity;

[0028] Step 103 , judging whether the currently configured rated capacity of the battery is wrong according to the absolute value error between the theoretical voltage and the actual voltage when the same discharge time elapses.

[0029] The embodiment of the present invention measures and records the actual voltage of the battery at different discharge times during the discharge operation of the battery, and compares it with the theoretical voltage at different discharge times under the current discharge current and t...

Embodiment 2

[0031] Embodiment 2 of the present invention provides a detection method for the wrong configuration of the rated capacity of the battery, which is an improvement on the basis of Embodiment 1, and can automatically detect the human-made wrong configuration of the rated capacity of the battery. In the embodiment, a battery with an actual rated capacity of 100AH ​​is used as an example for illustration, and the process is as follows figure 2 shown, including:

[0032] Step 201. When the battery is being discharged, the battery controller measures and records the actual voltage of the battery after different discharge times;

[0033] When the battery is discharging, generally, the battery controller sets the discharge current of the battery as (discharge coefficient × rated capacity of the battery), wherein the battery controller itself cannot obtain the rated capacity of the battery, and the battery stored in the battery controller The rated capacity of the battery is artifici...

Embodiment 3

[0059] This embodiment provides a detection device for a battery rated capacity configuration error, such as image 3 As shown, the device includes:

[0060] The actual voltage acquisition module 301 is used to measure and record the actual voltage of the battery when different discharge times have elapsed;

[0061] A theoretical voltage acquisition module 302, configured to acquire the theoretical voltage after different discharge times under the current discharge current and the currently configured rated capacity;

[0062] The error detection module 303 is configured to judge whether the currently configured rated capacity of the battery is wrong according to the absolute value error between the theoretical voltage and the actual voltage when the same discharge time elapses.

[0063] Further, as Figure 4 As shown, the above-mentioned device also includes:

[0064] The mapping acquisition module 304 is used to acquire the mapping of the corresponding relationship between...

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Abstract

A detection method and device for the configuration error of a battery nominal capacity is presented. The invention is involved in the battery management and control. Actual voltages of a battery at different times are measured and recorded when the battery is discharged. Actual voltages are compared with theory voltages, which are in the present discharge current, present configured nominal capacity, and at different times. Absolute errors are obtained by the comparison, and used to judge whither there is an error on the current configuration of the battery nominal capacity. If the method is used to detect the configuration of the battery nominal capacity, two problems can be prevented. One is the large calculation deviation of the battery residual capacity detection and the battery life forecasting, which is caused by the configuration error of the battery nominal capacity. The other is the influence to the charge and discharge of the battery and then the life of the battery, which is caused by that also.

Description

technical field [0001] The invention relates to the field of battery management and control, in particular to a method and device for detecting wrong battery rated capacity configuration. Background technique [0002] At present, in the implementation of hydrochloric acid battery management and control, the charging control of the battery, the detection of the remaining capacity of the battery, and the prediction of the battery life all rely on the capacity of the battery for calculation. For example, current limiting is required during battery charging control, and the current during current limiting is generally 0.15×the capacity of the battery, where 0.15 is the discharge coefficient. [0003] In the existing implementation, the battery controller cannot automatically detect the capacity of the battery, but manually configures the capacity of the battery, and sends the configured capacity obtained through manual configuration to the battery rated capacity controller, so a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
CPCY02E60/12H01M10/42H01M10/48Y02E60/10
Inventor 吴滨
Owner HUAWEI DIGITAL POWER TECH CO LTD
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