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Parallel battery relay diagnosis device and method

A battery relay and diagnosis device technology, applied in the field of relay devices, can solve problems such as battery pack interference, misdiagnosis, and increased manufacturing cost control logic, and achieve the effects of preventing misdiagnosis, simplifying control logic, and reducing costs

Pending Publication Date: 2022-02-25
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the parallel battery pack configuration, the pre-charging circuit is used redundantly, resulting in increased manufacturing cost and unnecessarily applying complex control logic
[0007] On the other hand, in the prior art parallel battery pack structure, if relay control and diagnostic logic for one battery is used, interference may occur between parallel connected battery packs, which may lead to misdiagnosis

Method used

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  • Parallel battery relay diagnosis device and method
  • Parallel battery relay diagnosis device and method
  • Parallel battery relay diagnosis device and method

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Embodiment Construction

[0022] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the present disclosure, the same reference numerals are used for the same elements in the drawings, and repeated descriptions of the same elements are omitted.

[0023] Among the various embodiments of the present disclosure disclosed herein, specific structural or functional descriptions are merely exemplary for the purpose of describing the embodiments of the present disclosure, and the various embodiments of the present disclosure can be implemented in various forms, and should not be construed as limited to the embodiments described herein.

[0024] As used in various embodiments, terms such as "first," "second," "the first," or "the second" may modify various components regardless of order and / or importance , but does not limit components. For example, a first element could be termed a second element, and, similarly, a second elem...

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PUM

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Abstract

A battery relay diagnosis device according to one embodiment of the present invention is a battery relay diagnosis device for diagnosing a battery system comprising a plurality of battery packs connected in parallel, and a charging and discharging control unit for controlling charging and discharging of the plurality of battery backs by being connected between the plurality of battery packs and a load side, wherein a battery pack comprises a battery cell module comprising a plurality of battery cells, and a switching unit comprising a first switch provided between the (+) end of the battery cell module and the load side, and a second switch provided between the (-) end of the battery cell module and the load side, and the battery relay diagnosis device comprises a switching control unit for controlling a current being applied to the battery cell module by on / off controlling the switching unit, and may comprise a diagnosis unit for diagnosing the first switch and the second switch on the basis of an on / off state of the first switch and the second switch.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2019-0172452 filed with the Korean Intellectual Property Office on December 20, 2019, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to an apparatus and method for diagnosing relays of multiple battery packs connected in parallel. Background technique [0004] In recent years, research and development of secondary batteries have been actively performed. Here, the secondary battery is a battery capable of recharging and discharging, and in its meaning, includes all existing Ni / Cd batteries, Ni / MH batteries, etc., and recent lithium ion batteries. Among secondary batteries, Li-ion batteries have the advantage of much higher energy density than existing Ni / Cd batteries and Ni / MH batteries. In addition, lithium ion batteries can be made small in s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00G01R31/36
CPCH02J7/0013H02J7/0031H02J7/0036H02J7/0047H02J7/0068G01R31/36G01R31/3278H01M10/425H01M2010/4271Y02E60/10H01M10/482H01M10/4257H01M50/569H01M50/512H01M10/488
Inventor 朴钟壹
Owner LG ENERGY SOLUTION LTD