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Method and device for determining battery target SOC

A determination method and battery technology, applied to measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problem of low accuracy of target SOC

Active Publication Date: 2020-06-23
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, an embodiment of the present invention provides a method and device for determining a battery target SOC, which is used to solve the problem of the accuracy of the target SOC obtained based on the corresponding relationship between the calibrated SOC and the voltage under static conditions in the prior art. low problem

Method used

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  • Method and device for determining battery target SOC
  • Method and device for determining battery target SOC
  • Method and device for determining battery target SOC

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Embodiment 1

[0068] In order to solve the above-mentioned problems existing in the prior art, the embodiment of the present invention provides a method for determining the target SOC, please refer to figure 1 , which is a schematic flowchart of Embodiment 1 of the method for determining the battery target SOC provided by the embodiment of the present invention, as shown in figure 1 As shown, the method includes the following steps:

[0069] S101. When a current flows through the battery, collect the electric quantity of the battery at each sampling point.

[0070] Specifically, when a current flows through the battery, the battery may be in a charging state, or the battery may be in a discharging state, and at this time, the electric quantity may be collected at each sampling point in the battery.

[0071] In the embodiment of the present invention, when collecting the power of the battery at each sampling point, it can be realized by integrating the current with respect to time; or, it c...

Embodiment 2

[0120] Based on the method for determining the target SOC of the battery provided in the first embodiment above, this embodiment of the present invention provides a specific implementation manner of the method for determining the target SOC of the battery.

[0121] Specifically, please refer to image 3 , which is a schematic flowchart of Embodiment 2 of the method for determining the battery target SOC provided by the embodiment of the present invention, as shown in image 3 As shown, the method includes the following steps:

[0122] S301. When a current flows through the battery, collect the electric quantity of the battery at 50 sampling points in real time.

[0123] S302. Determine whether the current of the battery is less than the current threshold and whether the temperature of the battery is greater than the temperature threshold within a specified period of time; if yes, execute S303; if not, execute S301.

[0124] S303. Determine the type of electric quantity of th...

Embodiment 3

[0144] Based on the method for determining the target SOC of the battery provided in the first embodiment above, the embodiment of the present invention further provides an embodiment of a device for implementing each step and method in the above method embodiment.

[0145] Please refer to Figure 4 , which is a functional block diagram of an apparatus for determining a battery target SOC provided by an embodiment of the present invention. Such as Figure 4 As shown, the device includes:

[0146] The collection unit 41 is used to collect the electric quantity of the battery at each sampling point when a current flows through the battery;

[0147] A determination unit 42, configured to determine the current state of the battery according to the power of the battery at each sampling point;

[0148] A selection unit 43, configured to select a target correspondence from at least two correspondences between specified SOC and voltage according to the current state of the battery;...

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Abstract

A battery target SOC determining method and device. The method comprises the following steps: when current flows through a battery, collecting the electric quantity of each sampling point of the battery (S101); then determining the current state of the battery according to the electric quantity of each sampling point of the battery (S102); selecting a target correspondence from at least two correspondences between a specified SOC and voltages according to the current state of the battery (S103); and determining a target SOC according to the target correspondence (S104). The method can solve the problem in the art of low accuracy of target SOC which is obtained based on correspondences between a nominal SOC and voltages under a static condition.

Description

【Technical field】 [0001] The present invention relates to the technical field of batteries, in particular to a method and device for determining a target SOC of a battery. 【Background technique】 [0002] At present, accurately obtaining the state of charge (State Of Charge, SOC) of the battery is a problem that needs to be solved in the battery field. In the prior art, the SOC data of the battery is generally obtained by obtaining the voltage value of the battery under the static condition based on the corresponding relationship between the SOC and the voltage calibrated under the static condition; by battery condition. [0003] In the prior art, since the corresponding relationship between SOC and voltage is obtained under static conditions for a long enough time, it is required that the collected voltage values ​​also need to be kept for a long enough time under static conditions to ensure that the obtained The voltage is stable, so accurate target SOC data can only be o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/388
CPCG01R31/367G01R31/3835
Inventor 颜昱谭俐
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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