WO2016187818A1 - Bloc-batterie au lithium-ion longue durée - Google Patents

Bloc-batterie au lithium-ion longue durée Download PDF

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Publication number
WO2016187818A1
WO2016187818A1 PCT/CN2015/079842 CN2015079842W WO2016187818A1 WO 2016187818 A1 WO2016187818 A1 WO 2016187818A1 CN 2015079842 W CN2015079842 W CN 2015079842W WO 2016187818 A1 WO2016187818 A1 WO 2016187818A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
lithium ion
long
package assembly
ion battery
Prior art date
Application number
PCT/CN2015/079842
Other languages
English (en)
Chinese (zh)
Inventor
张甘霖
Original Assignee
张甘霖
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 张甘霖 filed Critical 张甘霖
Priority to PCT/CN2015/079842 priority Critical patent/WO2016187818A1/fr
Publication of WO2016187818A1 publication Critical patent/WO2016187818A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • lithium-ion batteries have been widely used due to their high operating voltage, high energy density, no memory effect, long cycle life and no pollution, and their performance requirements have been continuously improved.
  • the original capacity lithium battery has been widely used in portable electronic devices such as mobile phones, notebook computers, digital cameras, etc.
  • high-current high-rate discharge power lithium batteries are also used in power tools, battery cars, miner's lamps, etc. Inseparable electronic devices.
  • lithium-ion battery packs increase capacity by means of parallel connection, and it is required that all the cells in parallel are balanced with each other and have good consistency.
  • the cells are not balanced, when charging, some of the cells are charged and some of the cells are not fully charged.
  • the battery that has been charged first will have an overcharge problem; Some of the cells are discharged and some of the cells are not discharged yet. As a result, the battery that has been discharged first will have an overdischarge problem. Overcharging or overdischarging can seriously damage the life of the battery pack, causing the battery pack to fail prematurely.
  • the present invention provides a long-life lithium ion battery pack including an outer package assembly, a protection circuit, and a battery pack packaged in the outer package assembly, the protection circuit being disposed outside the outer package assembly for
  • the battery pack is protected by charging and discharging, wherein the battery pack is formed by connecting a plurality of lithium batteries in parallel, and each of the single-cell lithium batteries, the positive electrode of each single-cell lithium battery and the external positive electrode of the battery pack plus the negative electrode thereof The sum of the lengths of the connecting lines with the outer negative electrode of the battery pack are respectively equal; wherein the outer positive electrode of the battery pack is disposed at the top of the outer package assembly, and the outer negative electrode of the battery pack is disposed at the bottom of the outer package assembly.
  • the external positive electrode of the battery pack and the external negative electrode of the battery pack are on the outer package assembly Diagonal setting.
  • the outer package assembly includes a battery pack base, and the battery pack base includes a base body and a plurality of positioning grooves arranged on the base body, the positioning groove is for placing a lithium battery, and the positioning
  • the groove includes a blind hole, a through hole is defined in a bottom of the blind hole, and four channels are formed in a sidewall of the through hole, and the channel communicates with adjacent positioning grooves, and the channel is used for the channel Place the connection wires connecting the lithium-ion batteries adjacent to each other.
  • the four channels are symmetrically distributed in a center.
  • the base body is formed by splicing a plurality of bases, and each of the bases is provided with two positioning grooves.
  • two adjacent outer walls of the base unit are provided with convex portions, and the other two adjacent outer walls are provided with grooves adapted to the convex portions, by singling the front base
  • the raised portion of the body is embedded in the groove of the rear base unit, and the adjacent two base units are spliced together.
  • the lithium ion battery pack provided by the invention has the same length of the positive electrode connector of each single cell and the length of the negative electrode connector, which is beneficial to the balance of each single cell, and improves the continuous output capability and cycle life of the battery pack. Security performance.
  • the battery pack base provided in the embodiment is formed by splicing a plurality of base units, and can be assembled into an array of multi-cell lithium batteries along the longitudinal direction or the transverse direction, which is beneficial to maintaining the stability of the battery pack and being set in the battery pack base.
  • the regular groove for placing the connecting line helps to control the accuracy of the connecting line and improve the balance of each single battery.
  • FIG. 1 is a schematic structural view of a lithium ion battery pack provided by an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a battery pack base according to an embodiment of the present invention.
  • FIG 3 is a front elevational view of a base unit according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of a rear perspective view of a base unit according to an embodiment of the present invention.
  • a long-life lithium ion battery pack provided in this embodiment includes an outer package component 1 , a protection circuit 2 , and a battery pack 3 packaged in the outer package assembly 1 .
  • the protection circuit 2 is disposed on the battery pack 3 .
  • the outside of the outer package assembly 1 is used to protect the charge and discharge of the battery pack 3.
  • the battery pack 3 is formed by parallel connection of multi-cell lithium batteries 3a, 3b, 3c, 3d, between each single-cell lithium battery, the positive pole of each single-cell lithium battery 3a, 3b, 3c, 3d and the external positive pole of the battery pack.
  • the sum of the length of the connecting line of 4 plus the negative line of the negative electrode and the negative electrode 5 of the external battery pack is equal.
  • the battery pack 3 includes four single-cell lithium batteries as an example.
  • L11 is the connection line between the anode of the first single-cell lithium battery 3a and the anode 4 of the battery pack
  • L12 is the first single.
  • L21 is the connection line between the positive electrode of the second single-cell lithium battery 3b and the positive electrode 4 of the battery pack
  • L22 is the negative electrode of the second single-cell lithium battery 3b.
  • connection line with the external negative electrode 5 of the battery pack L31 is the connection line between the positive electrode of the third single-cell lithium battery 3c and the positive electrode 4 of the battery pack, and L32 is the negative electrode of the third single-cell lithium battery 3c and the negative electrode of the external battery pack 5
  • the length of the positive electrode connector of each single cell is equal to the sum of the lengths of the negative electrode connectors, the balance of each single cell is facilitated, and the continuous output capability, cycle life and safety performance of the battery pack are improved.
  • the battery pack base 1a includes a base body 10 and a plurality of arrays disposed on the base body 10.
  • the positioning groove 20 is positioned to place the lithium batteries 3a, 3b, 3c, 3d.
  • the positioning recess 20 includes a blind hole 201 , and a through hole 202 is defined in the bottom of the blind hole 201 .
  • a channel 203 that communicates with adjacent positioning grooves 20 for placing connections connecting the lithium ion batteries adjacent to each other. Further, the four channels 203 are symmetrically distributed in a center; the width of the channel (203) is 10-15 mm.
  • the base body 10 is formed by splicing a plurality of base units 10a, and each of the base units 10a is provided with two positioning grooves 20.
  • two adjacent outer walls of the base unit 10a are provided with protrusions 101, and the other two adjacent outer walls are provided with grooves adapted to the protrusions 101. 102.
  • the adjacent two base units 10a are spliced together by embedding the boss 101 of the former base unit 10a into the recess 102 of the rear base unit 10a.
  • it can be longitudinally and horizontally spliced into an array structure in which a plurality of lithium batteries are placed (this embodiment only shows a row arranged in the lateral direction).
  • the battery pack base provided above is formed by splicing a plurality of base units, and can be assembled into an array of multi-cell lithium batteries along the longitudinal direction or the transverse direction, which is advantageous for maintaining the stability of the battery pack, and the battery pack base is provided with regular use.
  • the groove for placing the connecting line is advantageous for controlling the precision of the connecting line and improving the balance of each single battery.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un bloc-batterie au lithium-ion longue durée, comprenant un composant d'encapsulation externe, un circuit de protection, et un bloc-batterie encapsulé dans le composant d'encapsulation externe ; le circuit de protection est disposé à l'extérieur du composant d'encapsulation externe et est conçu de façon à protéger la charge et la décharge du bloc-batterie ; le bloc-batterie est constitué d'une pluralité de batteries au lithium qui sont connectées en parallèle ; parmi toutes les batteries au lithium uniques, les longueurs totales des lignes de connexion entre les pôles positifs de toutes les batteries au lithium uniques et un pôle positif situé à l'extérieur du bloc-batterie et des lignes de connexion entre les pôles négatifs de toutes les batteries au lithium uniques et un pôle négatif situé à l'extérieur du bloc-batterie sont respectivement égales ; et le pôle positif situé à l'extérieur du bloc-batterie est disposé sur la partie supérieure du composant d'encapsulation externe, et le pôle négatif situé à l'extérieur du bloc-batterie est agencé au niveau de la partie inférieure du composant d'encapsulation externe. Selon le bloc-batterie au lithium-ion de la présente invention, les longueurs totales des pièces de connexion de pôle positif de toutes les batteries uniques et les pièces de connexion de pôle négatif de toutes les batteries uniques sont égales, de telle sorte que l'équilibre de toutes les batteries uniques est mieux maintenu, et la capacité de sortie continue, la durée de vie et les performances de sécurité du bloc-batterie sont améliorées.
PCT/CN2015/079842 2015-05-26 2015-05-26 Bloc-batterie au lithium-ion longue durée WO2016187818A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/079842 WO2016187818A1 (fr) 2015-05-26 2015-05-26 Bloc-batterie au lithium-ion longue durée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/079842 WO2016187818A1 (fr) 2015-05-26 2015-05-26 Bloc-batterie au lithium-ion longue durée

Publications (1)

Publication Number Publication Date
WO2016187818A1 true WO2016187818A1 (fr) 2016-12-01

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Family Applications (1)

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PCT/CN2015/079842 WO2016187818A1 (fr) 2015-05-26 2015-05-26 Bloc-batterie au lithium-ion longue durée

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WO (1) WO2016187818A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107732059A (zh) * 2017-09-07 2018-02-23 合肥英俊新能源科技有限公司 一种新型方形锂电池标准化模组封装壳体及pack方法
CN112505541A (zh) * 2020-12-12 2021-03-16 国网辽宁省电力有限公司铁岭供电公司 基于智能芯片控制的高压断路器失灵保护检测装置及方法
FR3142610A1 (fr) * 2022-09-01 2024-05-31 Ctrl Energy Conception d’un nouveau système de stockage et distribution d'énergie modulaire et autonome

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263214A (zh) * 2010-05-31 2011-11-30 索尼公司 电池单元、导电端子和电池组
CN103247771A (zh) * 2012-02-01 2013-08-14 三星Sdi株式会社 可再充电电池组件和包括其的可再充电电池组
CN104538667A (zh) * 2014-12-23 2015-04-22 西宁共进新材料科技有限公司 长寿命锂离子电池组

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263214A (zh) * 2010-05-31 2011-11-30 索尼公司 电池单元、导电端子和电池组
CN103247771A (zh) * 2012-02-01 2013-08-14 三星Sdi株式会社 可再充电电池组件和包括其的可再充电电池组
CN104538667A (zh) * 2014-12-23 2015-04-22 西宁共进新材料科技有限公司 长寿命锂离子电池组

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107732059A (zh) * 2017-09-07 2018-02-23 合肥英俊新能源科技有限公司 一种新型方形锂电池标准化模组封装壳体及pack方法
CN107732059B (zh) * 2017-09-07 2023-08-29 江苏新晟新能源科技有限公司 一种方形锂电池标准化模组封装壳体及pack方法
CN112505541A (zh) * 2020-12-12 2021-03-16 国网辽宁省电力有限公司铁岭供电公司 基于智能芯片控制的高压断路器失灵保护检测装置及方法
FR3142610A1 (fr) * 2022-09-01 2024-05-31 Ctrl Energy Conception d’un nouveau système de stockage et distribution d'énergie modulaire et autonome

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