Battery power state estimation method and system and computer equipment
A battery power and power state technology, applied in battery/fuel cell control devices, measuring electricity, electric vehicles, etc., can solve the problem of overcharging or overdischarging of the power battery, affecting the power performance of the vehicle, and the power performance of the power battery is not up to the mark Vehicle demand and other issues to achieve the effect of improving estimation accuracy and reducing battery overcharge or overdischarge problems
Pending Publication Date: 2022-07-01
宝能汽车集团有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] When the estimated value of SOP is too large, the power battery may be overcharged or over-discharged, causing safety problems; when the estimated value of SOP is too small, the power performance of the power battery may not meet the needs of the entire vehicle, thus affecting the entire vehicle Power performance
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the embodiments of the present application, and should not be construed as limitations on the embodiments of the present application.
[0023] see figure 1 , an embodiment of the present application provides a battery cell-based battery power state estimation method. The battery power state estimation method includes:
[0024] S12: Obtain the cell power state in the current battery charging state;
[0025] S14: Estimating the cell power state at the next moment according to the preset correspondence between the battery power state and the cell power state;
[0026] S16: According to...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a battery power state estimation method based on a battery cell. The method comprises the following steps: acquiring a battery cell power state in a current battery charging state; estimating the power state of the battery cell at the next moment according to a preset corresponding relation between the power state of the battery and the power state of the battery cell; estimating the pulse duration of the pulse power of the battery cell and the interval time of two adjacent pulse powers according to the current battery cell power state and the characteristics of the battery cell power; and estimating the battery power state at the next moment, the pulse duration of the pulse power of the battery and the interval time of two adjacent pulse powers according to the estimated battery cell power state at the next moment, the pulse duration of the pulse power of the battery and the interval time of the two adjacent pulse powers. According to the invention, the SOP of the battery is estimated from the aspects of power data, internal resistance, aging characteristics, inconsistency and life attenuation characteristics of the battery cell, the SOP estimation precision is improved, and the problem of over-charging or over-discharging of the battery cell is reduced.
Description
technical field [0001] The present application relates to the technical field of battery power, and more particularly, to a battery power state estimation method and system, and computer equipment. Background technique [0002] With the rapid development of the new energy vehicle industry, the demand for power batteries continues to increase. Therefore, the battery management system (BMS) is one of the key components of the power battery system, and its technical requirements are constantly improving. The battery power state (State of Power, SOP) is one of the main estimation parameters of the battery management system (BMS), and the accuracy of its estimation will affect the power characteristics of the power battery system. [0003] When the estimated value of SOP is too large, the power battery may be overcharged or overdischarged, causing safety problems; when the estimated value of SOP is too small, the power performance of the power battery may not meet the needs of t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B60L58/12G01R31/367G01R31/382
CPCB60L58/12G01R31/367G01R31/382Y02T10/70
Inventor 董云鹏崔忠慧沈远亮
Owner 宝能汽车集团有限公司