WO2019127957A1 - Module de batterie - Google Patents

Module de batterie Download PDF

Info

Publication number
WO2019127957A1
WO2019127957A1 PCT/CN2018/081085 CN2018081085W WO2019127957A1 WO 2019127957 A1 WO2019127957 A1 WO 2019127957A1 CN 2018081085 W CN2018081085 W CN 2018081085W WO 2019127957 A1 WO2019127957 A1 WO 2019127957A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
explosion
batteries
battery
proof valve
Prior art date
Application number
PCT/CN2018/081085
Other languages
English (en)
Chinese (zh)
Inventor
章华
秦峰
游志毅
肖信福
王娟
马林
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2019127957A1 publication Critical patent/WO2019127957A1/fr

Links

Images

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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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

  • the present invention relates to the field of battery technologies, and in particular, to a battery module.
  • a failed battery In a closed battery module, a failed battery generates a large amount of high-temperature and high-pressure gas at the moment of failure and slowly accumulates inside the battery module, thereby causing damage to other normal batteries, and in severe cases, causing a fire and explosion.
  • an object of the present invention is to provide a battery module capable of discharging a large amount of high-temperature and high-pressure gas out of a battery module in time when a battery fails, and reducing other high-temperature and high-pressure gases to the inside of the battery module.
  • the destruction of the normal battery reduces the probability of fire and explosion due to the accumulation of high temperature and high pressure gas inside the battery module.
  • the present invention provides a battery module comprising: a plurality of batteries arranged side by side, each battery being provided with an explosion-proof valve for a battery; an upper cover located above the plurality of batteries and provided with a module An explosion-proof valve; and a lower case, the plurality of batteries are housed and assembled with the upper cover.
  • a closed passage is arranged between the upper cover and the plurality of batteries, and the explosion-proof valve for the module and the explosion-proof valve for each battery are exposed in the closed passage.
  • the closed passage is provided between the upper cover and the plurality of batteries, and the explosion-proof valve for the module and the explosion-proof valve for each battery are exposed in the closed passage, when any battery in a battery fails, a large amount of high-temperature and high-pressure gas generated at the moment of failure will first open its own battery explosion-proof valve and enter the closed channel and slowly accumulate in the closed channel, which accumulates in the closed channel.
  • the air pressure is greater than the opening air pressure of the explosion-proof valve of the module, the high-temperature and high-pressure gas will be flushed out of the module and then released to the outside of the battery module.
  • the battery module of the invention reduces the damage of the high temperature and high pressure gas to other normal batteries inside the battery module; reduces the probability of fire and explosion due to the accumulation of high temperature and high pressure gas inside the battery module; and avoids the battery mode The uncontrollable situation caused by undirectional exhaust or explosion.
  • FIG. 1 is an exploded view of a battery module in accordance with the present invention.
  • Figure 2 is an assembled view of Figure 1.
  • Figure 3 is a plan view of Figure 2.
  • Fig. 4 is a front plan view of the air guiding member of Fig. 1.
  • Fig. 5 is a rear plan view of the air guiding member of Fig. 1.
  • Figure 6 is a cross-sectional view taken along line A-A of Figure 3 .
  • Figure 7 is a cross-sectional view taken along line B-B of Figure 3 .
  • Figure 8 is a variation of Figure 6.
  • Fig. 9 is a perspective view of the air guiding member of Fig. 8.
  • Fig. 10 is a front plan view of Fig. 9;
  • Fig. 11 is a rear plan view of Fig. 9;
  • Fig. 12 is another modification of Fig. 6.
  • Figure 13 is a perspective view of the air guiding member of Figure 12;
  • Figure 14 is still another variation of Figure 6.
  • Fig. 15 is still another modification of Fig. 6.
  • Figure 16 is a modification of Figure 15.
  • Figure 17 is another variation of Figure 15.
  • a battery module includes a plurality of batteries 1 arranged side by side, each battery 1 being provided with a battery explosion-proof valve 11; an upper cover 2 located above the plurality of batteries 1 and disposed There is a module explosion-proof valve 21; and a lower case 3 for accommodating the plurality of batteries 1 and assembling them with the upper cover 2.
  • a closed passage S is disposed between the upper cover 2 and the plurality of batteries 1, and the explosion-proof valve 21 for the module and the explosion-proof valve 11 for each battery are exposed to the closed passage S.
  • the explosion-proof valve 21 for the module and the explosion-proof valve 11 for each battery are exposed to the closed passage S. Therefore, when any of the plurality of batteries 1 fails, a large amount of high-temperature and high-pressure gas generated at the moment of failure will first open its own battery explosion-proof valve 11 and enter the closed passage S and in the closed passage S. It gradually accumulates. When the air pressure accumulated in the closed channel S is greater than the opening air pressure of the explosion-proof valve 21 for the module, the high-temperature and high-pressure gas will be flushed out of the module and then released to the outside of the battery module.
  • the battery module of the invention reduces the damage of the high temperature and high pressure gas to other normal batteries 1 inside the battery module; reduces the probability of fire and explosion due to the accumulation of high temperature and high pressure gas inside the battery module; and avoids the battery The uncontrollable situation of the module due to undirectional exhaust or explosion.
  • the battery module of the present invention has a simple structure, is easy to assemble, and reduces the cost, and the arrangement of the closed channel S between the upper cover 2 and the plurality of batteries 1 is also various, and now the closed channel S is The following setting methods are described in detail.
  • the battery module may further include: a gas guiding member 4 disposed between the upper cover 2 and the plurality of batteries 1.
  • the air guiding member 4 may have a peripheral wall 41 that abuts and seals face-to-face with the lower surface of the upper cover 2, and the peripheral wall 41 encloses an upper opening 44, the module is exposed to the upper opening 44 by the explosion-proof valve 21; and the bottom wall 42,
  • the upper surface of each of the batteries 1 is surface-contacted and sealed, and the bottom wall 42 is connected to the peripheral wall 41 and forms a groove structure together with the peripheral wall 41 and is provided with a plurality of spaced apart lower openings 45, each of which is exposed to the corresponding explosion-proof valve 11 A lower opening 45.
  • the closed passage S is formed by the peripheral wall 41 of the air guiding member 4, the bottom wall 42, and the upper cover 2.
  • the battery module may further include: a gas guiding member 4 disposed between the upper cover 2 and the plurality of batteries 1.
  • the air guiding member 4 may have a peripheral wall 41 that is surface-contacted and sealed to the lower surface of the upper cover 2, and a lower end surface 412 that is in face-to-face contact with the upper surface of each of the batteries 1 and sealed, and the peripheral wall 41 has an upper opening 44 and the lower opening 45 and the hollow cavity, the module is exposed to the upper opening 44 by the explosion-proof valve 21, and each battery is exposed to the lower opening 45 by the explosion-proof valve 11.
  • the closed passage S is formed by the air guiding member 4, the upper cover 2, and the upper surfaces of all the batteries 1.
  • the battery module may further include a gas guiding member 4 disposed between the upper cover 2 and the plurality of batteries 1 .
  • the air guiding member 4 may have a top wall 43 that is surface-contacted and sealed to the lower surface of the upper cover 2, and the top wall 43 is provided with an upper opening 44, and the module is exposed to the upper opening 44 by the explosion-proof valve 21; the peripheral wall 41, The upper end is connected to the top wall 43; and the bottom wall 42 is in contact with and sealed to the upper surface of each of the batteries 1.
  • the bottom wall 42 is connected to the lower end of the peripheral wall 41 and is provided with a plurality of spaced apart lower openings 45.
  • the valve 11 is exposed in a corresponding one of the lower openings 45.
  • the closed passage S is formed by the top wall 43, the peripheral wall 41, and the bottom wall 42 of the air guiding member 4.
  • the battery module may further include: a gas guiding member 4 disposed between the upper cover 2 and the plurality of batteries 1 .
  • the air guiding member 4 may have a top wall 43 that abuts and seals face-to-face with the lower surface of the upper cover 2, and the top wall 43 is provided with an upper opening 44, the module is exposed to the upper opening 44 by the explosion-proof valve 21; and the peripheral wall 41
  • the upper end surface 411 is connected to the top wall 43, the lower end surface 412 is surface-contacted and sealed to the upper surface of each of the batteries 1, and the peripheral wall 41 encloses a lower opening 45, and each battery is exposed to the lower opening 45 by the explosion-proof valve 11.
  • the closed passage S is formed by the top wall 43 of the air guiding member 4, the peripheral wall 41, and the upper surfaces of all the batteries 1.
  • the air guiding members 4 are used in the above-described several arrangements of the closed passage S, but the specific structure of the air guiding members 4 is different.
  • the air guiding members 4 of the above several structures may be made of plastic or metal materials, but the material of the air guiding members 4 is not limited thereto and the structure of the air guiding members 4 is not limited to the above. According to the different working environment of the battery module, the material and structure of the air guiding member 4 can be reasonably adjusted.
  • the battery module may further include: a spacer (such as a harness isolation board) disposed between the upper cover 2 and the plurality of batteries 1.
  • a spacer such as a harness isolation board
  • the air guiding member 4 may be integrally formed with the partitioning plate (ie, the air guiding member 4 and the partitioning plate are integrated into one body).
  • a closed passage S may be provided between the upper cover 2 and the plurality of batteries 1 by improving the structure of the upper cover 2 or the assembly relationship between the upper cover 2 and the lower case 3, as shown in FIGS. 15 to 17. Show.
  • the upper cover 2 may have an upper wall 22, an explosion-proof valve 21 for a module, and a surrounding wall 23, the upper end of which is connected to the upper wall 22, and the outer peripheral surface of the surrounding wall 23 is sealingly fitted to the lower casing 3.
  • the closed passage S is formed by the upper wall 22 of the upper cover 2, the surrounding wall 23, the lower case 3, and the upper surfaces of all the batteries 1.
  • the upper cover 2 may have: an upper wall 22, an explosion-proof valve 21 for a module; and a surrounding wall 23, the upper end being connected to the upper wall 22; the lower wall 24, facing the upper surface of each of the batteries 1 and Sealed, the lower wall 24 is connected to the lower end of the surrounding wall 23 and is provided with a plurality of spaced apart through holes 25, each of which is exposed to a corresponding through hole 25 by an explosion-proof valve 11.
  • the closed passage S is formed by the upper wall 22 of the upper cover 2, the surrounding wall 23, and the lower wall 24.
  • the upper cover 2 may have an upper wall 22 on which an explosion-proof valve 21 for a module is provided, and an outer peripheral surface of the upper wall 22 is sealingly fitted to the lower casing 3.
  • the closed passage S is formed by the upper wall 22 of the upper cover 2, the lower case 3, and the upper surfaces of all the batteries 1.
  • the upper cover 2 may be made of a metal material.
  • the lower case 3 can also be made of a metal material.
  • the upper cover 2 can be welded and connected to the lower case 3.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

La présente invention concerne un module de batterie, comprenant : une pluralité de batteries, chacune des batteries étant pourvue d'une soupape antidéflagrante de batterie ; un couvercle supérieur pourvu d'une soupape antidéflagrante de module ; et un boîtier inférieur assemblé avec le couvercle supérieur. Un passage fermé est prévu entre le couvercle supérieur et la pluralité de batteries, et la soupape antidéflagrante de module et les soupapes antidéflagrantes de batterie sont exposées au passage fermé. Du fait que la soupape antidéflagrante de module et les soupapes antidéflagrantes de batterie sont exposées au passage fermé, lorsque l'une quelconque de la pluralité de batteries tombe en panne, une grande quantité de gaz à haute température et haute pression générée au moment de la défaillance est d'abord projetée hors de sa propre soupape antidéflagrante de batterie et pénètre dans le passage fermé et s'accumule progressivement dans le passage fermé ; et lorsque la pression de l'air accumulé dans le passage fermé est supérieure à la pression d'ouverture de la soupape antidéflagrante de module, le gaz à haute température et à haute pression est projeté hors de la soupape antidéflagrante de module et est ensuite libéré vers l'extérieur du module de batterie dans une certaine direction. Ainsi, l'endommagement, par le gaz à haute température et à haute pression, des autres batteries normales dans le module de batterie est réduit, ce qui réduit la probabilité d'incendie et d'explosion.
PCT/CN2018/081085 2017-12-28 2018-03-29 Module de batterie WO2019127957A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201721887091.0U CN207818679U (zh) 2017-12-28 2017-12-28 电池模组
CN201721887091.0 2017-12-28

Publications (1)

Publication Number Publication Date
WO2019127957A1 true WO2019127957A1 (fr) 2019-07-04

Family

ID=63328341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/081085 WO2019127957A1 (fr) 2017-12-28 2018-03-29 Module de batterie

Country Status (2)

Country Link
CN (1) CN207818679U (fr)
WO (1) WO2019127957A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110393876A (zh) * 2019-08-05 2019-11-01 清华大学 锂离子电池防火装置
CN113921983A (zh) * 2021-09-28 2022-01-11 浙江锋锂新能源科技有限公司 一种具有定向泄压结构的电池模组
CN115275494A (zh) * 2022-08-18 2022-11-01 合众新能源汽车有限公司 电芯倒置式电池模组
DE102021131912A1 (de) 2021-12-03 2023-06-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batteriemodul einer Hochvolt-Batterie für ein elektrisch oder teilelektrisch angetriebenes Fahrzeug
US11955651B2 (en) 2019-01-09 2024-04-09 Byd Company Limited Power battery pack and electric vehicle
CN110393876B (zh) * 2019-08-05 2024-05-31 清华大学 锂离子电池防火装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209104230U (zh) * 2018-12-27 2019-07-12 宁德时代新能源科技股份有限公司 一种电池箱
CN110190211B (zh) * 2018-12-29 2020-03-31 比亚迪股份有限公司 电池托盘、动力电池包及车辆
CN110190212B (zh) * 2018-12-29 2020-02-04 比亚迪股份有限公司 动力电池包及车辆
CN111668422A (zh) * 2019-03-08 2020-09-15 比亚迪股份有限公司 电池模组、动力电池包和车辆
CN111200088B (zh) * 2020-03-13 2022-09-16 合肥工业大学 一种热安全管控电池模组结构
CN112038528B (zh) * 2020-09-08 2023-08-08 北京未来智酷汽车科技有限公司 一种电池箱
CN112701393B (zh) * 2020-12-29 2023-06-09 长城汽车股份有限公司 电池模组以及具有其的车辆
DE102021129317A1 (de) 2021-11-11 2023-05-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batterieeinrichtung für ein wenigstens teilweise elektrisch betriebenes Kraftfahrzeug
CN117497928B (zh) * 2023-12-29 2024-03-19 深圳海辰储能科技有限公司 端盖组件、储能装置和用电设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130065100A1 (en) * 2011-09-09 2013-03-14 Duk-Jung Kim Rechargeable battery and module thereof
CN204651372U (zh) * 2015-06-05 2015-09-16 宁德时代新能源科技有限公司 用于电池模组的上盖组件
CN206040913U (zh) * 2016-09-29 2017-03-22 宁德时代新能源科技股份有限公司 电池模组

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130065100A1 (en) * 2011-09-09 2013-03-14 Duk-Jung Kim Rechargeable battery and module thereof
CN204651372U (zh) * 2015-06-05 2015-09-16 宁德时代新能源科技有限公司 用于电池模组的上盖组件
CN206040913U (zh) * 2016-09-29 2017-03-22 宁德时代新能源科技股份有限公司 电池模组

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11955651B2 (en) 2019-01-09 2024-04-09 Byd Company Limited Power battery pack and electric vehicle
CN110393876A (zh) * 2019-08-05 2019-11-01 清华大学 锂离子电池防火装置
CN110393876B (zh) * 2019-08-05 2024-05-31 清华大学 锂离子电池防火装置
CN113921983A (zh) * 2021-09-28 2022-01-11 浙江锋锂新能源科技有限公司 一种具有定向泄压结构的电池模组
DE102021131912A1 (de) 2021-12-03 2023-06-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batteriemodul einer Hochvolt-Batterie für ein elektrisch oder teilelektrisch angetriebenes Fahrzeug
CN115275494A (zh) * 2022-08-18 2022-11-01 合众新能源汽车有限公司 电芯倒置式电池模组
CN115275494B (zh) * 2022-08-18 2024-05-24 合众新能源汽车股份有限公司 电芯倒置式电池模组

Also Published As

Publication number Publication date
CN207818679U (zh) 2018-09-04

Similar Documents

Publication Publication Date Title
WO2019127957A1 (fr) Module de batterie
WO2020134054A1 (fr) Bloc-batterie d'alimentation et véhicule
WO2020135152A1 (fr) Boîtier de batterie
CN111106277B (zh) 电池包
AU2021419120B2 (en) Two-way vent valve, battery, and electrical device
JP6702554B2 (ja) 防爆防水ケース
WO2019174085A1 (fr) Module de batterie et bloc-batterie
KR101268296B1 (ko) 축전지용 벤트 캡
JP2011175844A (ja) 電池パック
WO2015125675A1 (fr) Bloc batterie
WO2012147150A1 (fr) Ensemble batterie et cellule individuelle
WO2015001972A1 (fr) Bloc-batterie
JPS6015806B2 (ja) ダンパ付エンジンマウント装置
JP2765824B2 (ja) 燃料タンクのガス排出装置
JP2015125944A (ja) 電池パック
WO2023241016A1 (fr) Batterie et module de batterie
KR101159922B1 (ko) 배터리용 안전 밸브
WO2020062696A1 (fr) Module de haut-parleur, et terminal mobile
JP6780366B2 (ja) 電池パック
CN217544846U (zh) 一种新能源车载电池的防爆结构
WO2023093432A1 (fr) Bloc-batterie
CN107658420B (zh) 一种用于锂离子二次电池的顶盖
PL1734598T5 (pl) Pokrywa akumulatora i akumulator z tą pokrywą
JP2017188207A (ja) 電池パック
DE50012351D1 (de) Verschlussstopfenanordnung für Akkumulatoren

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18894797

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18894797

Country of ref document: EP

Kind code of ref document: A1