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Multipoint temperature control protective method and device of lithium-ion power battery

A power battery, temperature control and protection technology, applied in the repair/maintenance of secondary batteries, secondary batteries, circuits, etc., can solve the problems of reducing battery life, accelerating battery capacity decay, and not being able to protect batteries in time, so as to slow down Effects of capacity fading and prolonging service life

Active Publication Date: 2014-02-19
SHENZHEN LONGOOD INTELLIGENT ELECTRIC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a battery that can protect the battery in time and prolong the service life of the battery in view of the above-mentioned defects in the prior art that cannot protect the battery in time, reduce the service life of the battery, accelerate the decay of the battery capacity, and cannot reflect the actual temperature of the battery in time. Lithium-ion power battery multi-point temperature control protection method and device for life, slowing down battery capacity attenuation, and being able to reflect the actual temperature of the battery in time

Method used

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  • Multipoint temperature control protective method and device of lithium-ion power battery

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0042] In the embodiment of the lithium-ion power battery multi-point temperature control protection method and device of the present invention, the structural diagram of the mobile energy storage device where the lithium-ion power battery is located is as follows figure 1 shown. figure 1 Among them, the structure of the mobile energy storage device is similar to a small square box, and a powerful 18650 type cylindrical lithium-ion power battery is installed inside...

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Abstract

The invention discloses a multipoint temperature control protective method of a lithium-ion power battery. Multiple thermistors which are used for detecting the temperatures of measuring points are mounted on a lithium-ion power battery, and the thermistors are connected with a fixed resistor. The protective method comprises the following steps: acquiring values of the thermistors at the current measuring points; obtaining temperature values of various measuring points according to the values of the thermistors; comparing the temperature values of the various measuring points, and taking corresponding measures according to a compared result. The invention also relates to a device for realizing the protective method. The multipoint temperature control protective method and device of the lithium-ion power battery have the beneficial effects that the battery can be protected in time, the service life of the battery can be prolonged, the capacity fading of the battery can be slowed down, and the actual temperature of the battery can be reflected in time.

Description

technical field [0001] The invention relates to the field of battery protection, in particular to a multi-point temperature control protection method and device for a lithium-ion power battery. Background technique [0002] At present, in the secondary protection of lithium-ion power batteries, temperature protection is used. Its temperature protection adopts single-point temperature protection, which basically meets the protection function under the use of conventional lithium-ion power batteries. However, due to the discreteness of each lithium-ion power battery, in the discharge state, the individual heating temperature of each battery is inconsistent, which seriously delays the temperature detection and fails to protect the battery in time, thereby reducing the service life of the lithium-ion power battery. At the same time, it also accelerates the capacity decay of lithium-ion power batteries. The main reason for the temperature delay is the slow heat transfer. The 18...

Claims

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Application Information

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IPC IPC(8): H01M10/48
CPCH01M10/425H01M10/486Y02E60/10
Inventor 唐冬明颜勇
Owner SHENZHEN LONGOOD INTELLIGENT ELECTRIC
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