Battery module screening method and power battery pack screening method
A technology for power battery packs and battery modules, which is applied in the automotive field and can solve problems such as battery safety issues, overcharge/overdischarge of power battery packs/battery modules, unsaturated capacity, etc., to ensure safety and accuracy Judgmental effect
Active Publication Date: 2018-09-11
WATTPACK TECH CO LTD
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, there are differences in technical parameters such as capacity, voltage, and internal resistance among multiple power battery packs and multiple battery modules in a power battery pack. Once the difference is too large, the power battery pack / battery module Unbalanced distribution of working voltage and working current will inevitably lead to problems such as overcharging / overdischarging of power battery packs / battery modules, or unsaturated capacity, and even lead to battery safety issues
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
[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0028] The following describes the battery module screening method of the power battery pack and the power battery pack screening method of the battery power system according to the embodiments of the present invention with reference to the accompanying drawings. First, the batteries of the power battery pack proposed according to the embodiments of the present invention will be described with reference to the drawings Mod filter method.
[0029] figure 1 It is a flowchart of a battery module screening method for a power battery...
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 module screening method for a power battery pack. The method comprises the steps that dynamic voltage data of the power battery pack are detected; whether the first screening condition is met or not is judged according to the voltage extreme value, generated during charging and / or discharging, in the dynamic voltage data; if the first screening condition is not met, a battery module corresponding to any extreme value is replaced till the first screening condition is met; a fitting function is obtained according to the dynamic voltage data; whether the second screening condition is met or not is judged according to the intercept of the fitting function and / or the standard deviation of the slope; and if the second screening condition is not met, a battery module corresponding to any intercept and / or slope extreme value is replaced till the second screening condition is met. By means of the method, whether charging and discharging consistency of the power battery pack is good or not can be rapidly and accurately judged so that the power battery pack with good charging and discharging consistency can be obtained finally, the using safety of batteries is better guaranteed, and the battery module screening method is simple and easy to achieve. The invention further discloses a power battery pack screening method of a power battery system.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a battery module screening method and a power battery pack screening method. Background technique [0002] As the core component of electric vehicles, the power battery pack provides a source of power for electric vehicles. Usually, electric vehicles are equipped with multiple power battery packs in order to meet different power requirements and different layout space requirements. In a single power battery pack, battery modules are usually combined in different series and parallel to meet different voltage and power output requirements. However, there are differences in technical parameters such as capacity, voltage, and internal resistance among multiple power battery packs and multiple battery modules in a power battery pack. Once the difference is too large, the power battery pack / battery module Unbalanced distribution of working voltage and working current will inevita...
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 Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/344B07C5/36
CPCB07C5/344B07C5/361
Inventor 王克坚曹瑜琦
Owner WATTPACK TECH CO LTD