Battery power characteristic test method and device

A technology for characteristic testing and battery power, applied in the field of battery power characteristic testing methods and devices, can solve problems such as long test cycles, achieve complete test results, improve test accuracy, and shorten test time.

Pending Publication Date: 2022-05-24
HUBEI JINQUAN NEW MATERIALS CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing SOP test method ha

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Battery power characteristic test method and device
  • Battery power characteristic test method and device
  • Battery power characteristic test method and device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] figure 1 It is a flow chart of a battery power characteristic testing method provided in Embodiment 1 of the present invention. This embodiment can be applied to the battery power characteristic testing situation. The method can be performed by a battery power characteristic testing device, which can be performed by software and / or hardware implementation. refer to figure 1 , the method specifically includes the following steps:

[0044] S110. At the set temperature, for the battery to be tested with the set state of charge, use the first set power P1 Perform an electrical test to obtain a first test time; wherein, the electrical test includes a charge test or a discharge test; the charge test includes charging the battery under test to an upper limit cutoff voltage; the discharge test includes discharging the battery under test to the lower cut-off voltage.

[0045] Specifically, the test equipment is selected according to the parameters of the...

Example Embodiment

[0061] Embodiment 2

[0062] On the basis of the above embodiment, optionally, if the first test time is equal to the set time, the first set power is the power value to be tested of the battery to be tested at the set temperature and the set state of charge; A set power is the maximum power of the test equipment for conducting the electrical test on the battery to be tested. If the first test time is greater than the set time, the battery to be tested is subjected to the next set state of charge electrical test at the set temperature.

[0063] Specifically, when the first test time is equal to the set time, the first set power for the electrical test of the battery under test is the power required for the power characteristic test. When the first test time is greater than the set time, it indicates that the first set power is too small, and the first set power needs to be increased, but at this time the first set power has reached the limit of the maximum power of the chargin...

Example Embodiment

[0074] Embodiment 3

[0075] figure 2 This is a flowchart of a method for testing battery charging power characteristics provided in Embodiment 3 of the present invention. Refer to figure 2 , the following is an example of the power characteristic test of the battery to be tested:

[0076] S201. Under the set temperature, for the battery to be tested with the set state of charge, use the first set power P 1 A charging test is performed to obtain the first test time; the charging test includes charging the battery to be tested to the upper limit cut-off voltage.

[0077] S202. Determine the relationship between the first test time and the set time. If the first test time is equal to the set time, execute S203; if the first test time is greater than the set time, execute S204; if the first test time is less than the set time, execute S205.

[0078]S203 , the first set power for the charging test of the battery to be tested is the power required for the power characteristic...

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

No PUM Login to view more

Abstract

The embodiment of the invention discloses a battery power characteristic test method and device. The method comprises the following steps: performing an electrical test on a to-be-tested battery with a set state of charge at a set temperature at a first set power P1 to obtain a first test time; if the first test time is less than the set time, adjusting the charge state of the to-be-tested battery to a set charge state, and performing an electrical test at a second set power P2 to obtain a second test time; and if the mth test time is not equal to the set time, calculating a difference value delta P between the mth set power Pm and the (m-1) th set power Pm-1, and if the delta P meets a set error condition, determining the mth set power Pm as a to-be-tested power value of the to-be-tested battery under the set temperature and the set state of charge. According to the embodiment of the invention, a method for setting the test power error by combining successive approximation iteration is adopted in the power characteristic test, so that the test precision is improved, and the test period is shortened while the automatic mass test requirement is met.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of battery testing, and in particular, to a method and device for testing battery power characteristics. Background technique [0002] With the development and wide application of electric vehicles in the field of new energy, the estimation of the state of charge, state of health and power state of lithium-ion batteries has become one of the research hotspots, and its test and estimation accuracy directly affects the utilization efficiency and Safe to use. The power battery power state (State Of Power, SOP) is used to characterize the maximum peak charge and discharge power that the battery can withstand under a certain state (temperature / state of charge / duration / preset cut-off voltage). Acceleration start, hill climbing and braking force recovery performance have important evaluation and strategic control significance. The existing SOP test method has the problem of long test period....

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
no application Login to view more
IPC IPC(8): G01R31/36
CPCG01R31/36Y02T10/70
Inventor 苑丁丁程鹏邓力
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap