Method for measuring influence of temperature on power performance of lithium ion battery pack

A technology for lithium-ion battery packs and lithium-ion batteries, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc. low cost effect

Pending Publication Date: 2022-05-27
WANXIANG 123 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention ignores the influence of temperature on battery power characteristics, has techni

Method used

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Examples

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Example Embodiment

[0037] Example:

[0038] A method for measuring the influence of temperature on the power performance of a lithium-ion battery pack in this embodiment includes the following steps:

[0039] S1: Place the battery in a temperature-controlled constant temperature room, and place all test devices in a temperature-controlled constant temperature room, such as figure 1 As shown, all test devices and lithium-ion batteries are placed in a temperature-controlled constant temperature chamber. The single cell of each lithium-ion battery is packaged in a separate copper chamber, and the surface of the copper chamber is uniformly covered with a high thermal conductivity resin film Sheet (including one of graphene film, polyimide film, boron nitride thermally conductive film, aluminum-plastic film, etc.) or metal foil (including one of silver, gold, copper, aluminum, platinum, zinc and other metals) type), the thickness of the diaphragm or foil is 0.5-1mm, and the distance between the foil an

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Abstract

The invention discloses a method for measuring the influence of temperature on the power performance of a lithium ion battery pack. In order to solve the influence of the temperature gradient on the power performance of the lithium ion battery pack, the method comprises the following steps: placing a battery in a temperature-controllable constant-temperature chamber; regulating the external temperature of the batteries to form a temperature gradient difference between the batteries; performing an HPPC test on the battery; and 3, repeating the step 3 for a plurality of times according to the same method under the same condition, then stopping the experiment, recording experiment data, and evaluating the influence of the temperature on the power performance of the lithium ion battery according to the experiment data. The method has the advantages of being suitable for all types of existing lithium ion batteries, high in applicability, easy to operate, low in measurement cost and beneficial to design and development of the lithium ion battery module.

Description

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Claims

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Application Information

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Owner WANXIANG 123 CO LTD
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