WO2024251262A1 - Boîtier de batterie et bloc-batterie - Google Patents

Boîtier de batterie et bloc-batterie Download PDF

Info

Publication number
WO2024251262A1
WO2024251262A1 PCT/CN2024/098106 CN2024098106W WO2024251262A1 WO 2024251262 A1 WO2024251262 A1 WO 2024251262A1 CN 2024098106 W CN2024098106 W CN 2024098106W WO 2024251262 A1 WO2024251262 A1 WO 2024251262A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
pressure relief
filter
battery case
filler
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2024/098106
Other languages
English (en)
Chinese (zh)
Inventor
刘勇
张轩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Batterotech Co Ltd
Original Assignee
Batterotech Co Ltd
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 Batterotech Co Ltd filed Critical Batterotech Co Ltd
Publication of WO2024251262A1 publication Critical patent/WO2024251262A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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 disclosure provides a battery box and a battery pack, which can cool the exhaust gas from the battery pack and can achieve the effect of suppressing open flames.
  • an embodiment of the present disclosure provides a battery box, comprising:
  • a buffer support member the buffer support member is disposed in the exhaust chamber, the buffer support member has an accommodating inner cavity;
  • the buffer support is configured to release the filler in case of rupture to cool down the smoke in the exhaust chamber or extinguish the fire.
  • the box body includes a box guard plate and a box shell, the box shell and the box guard plate are connected, and the box shell and the box guard plate jointly define the exhaust chamber, and the buffer support member abuts between the box shell and the box guard plate.
  • the box shell is provided with a pressure relief channel and a pressure relief port, and the exhaust chamber, the pressure relief channel and the pressure relief port are connected in sequence.
  • a portion of the housing shell protrudes toward the exhaust chamber to form a pressure relief groove.
  • the battery box further includes a filter plate, the filter plate is disposed in the exhaust chamber, and a first filter hole is provided on the filter plate.
  • a second filter hole is further provided on the filter plate, and an inner diameter of the first filter hole is smaller than an inner diameter of the second filter hole.
  • the ratio of the volume of the accommodating inner cavity to the volume of the buffer support member is less than three quarters.
  • the ratio of the volume of the accommodating inner cavity to the volume of the buffer support member is one-half.
  • the filter plate is provided with a plurality of the first filter holes, and/or the number of the second filter holes is plural.
  • the number of the filter plates is multiple, some of the filter plates are arranged in a straight line to form a first column of filter plates, and another part of the filter plates are arranged in a straight line to form a second column of filter plates, and the first column of filter plates and the second column of filter plates are distributed at intervals.
  • a pressure relief hole is provided on the box shell, the pressure relief hole is a through hole, a pressure relief plate is provided on the pressure relief hole, the pressure relief plate covers the pressure relief hole, and the pressure relief plate has a weak area.
  • the filler is a phase change filler.
  • the filler is a fire extinguishing filler.
  • a battery pack in an embodiment of the present disclosure, comprising a battery module and a battery case as described in any one of the aforementioned embodiments, wherein the battery module is disposed in the battery case.
  • part of the box shell protrudes toward the exhaust chamber to form a pressure relief groove
  • the battery cells in the battery module of the battery pack are arranged on the box shell, and the area of the side of the battery cells in contact with the box shell is larger than the opening area of the notch of the pressure relief groove.
  • the battery box and battery pack of the embodiments of the present disclosure have the following beneficial effects, for example:
  • the present disclosure provides a battery case, including a case body, a buffer support and a filler, wherein the case body is provided with an exhaust chamber, the buffer support is arranged in the exhaust chamber, the buffer support has a containing inner cavity, and the filler is arranged in the containing inner cavity; wherein the buffer support is configured to release the filler in case of rupture, so as to cool down or extinguish the smoke in the exhaust chamber. It can be seen that by releasing the filler in case of rupture of the buffer support, the exhaust gas of the battery pack can be cooled and the effect of suppressing open flames can be achieved.
  • the present disclosure provides a battery pack, which includes a battery module and the above-mentioned battery case, wherein the battery module is arranged in the battery case, and the battery pack has all the functions of the above-mentioned battery case.
  • FIG1 is a cross-sectional view of a battery box provided in an embodiment of the present disclosure.
  • FIG3 is a schematic diagram of a filter plate provided in an embodiment of the present disclosure.
  • FIG. 4 is an enlarged view of the battery case A in FIG. 1 .
  • Icons 100-box body; 101-exhaust chamber; 110-box guard plate; 120-box shell; 121-pressure relief channel; 122-pressure relief port; 123-pressure relief groove; 200-buffer support; 201-containing inner cavity; 300-filter plate; 301-first filter hole; 302-second filter hole; 400-filler.
  • the present disclosure provides a battery pack, which includes a battery module and a battery case, wherein the battery module is arranged in the battery case.
  • the battery case includes a case body 100 , a buffer support 200 and a filler.
  • the case body 100 is provided with an exhaust chamber 101
  • the buffer support 200 is arranged in the exhaust chamber 101
  • the buffer support 200 has an accommodating inner cavity 201
  • the filler 400 is arranged in the accommodating inner cavity 201 .
  • the buffer support 200 is configured to release the filler 400 when it is broken, so as to cool down or extinguish the smoke in the exhaust chamber 101. It can be seen that in a high temperature environment, the buffer support 200 is broken. Releasing the filler 400 can cool the exhaust gas from the battery pack and suppress open flames.
  • the filler 400 can be a phase change filler, such as an organic, inorganic, solid or liquid phase change material, or it can be a fire extinguishing filler, such as a filler made of a fire extinguishing material, such as perfluorohexanone, a fluorinating agent, etc.
  • phase change filler such as an organic, inorganic, solid or liquid phase change material
  • fire extinguishing filler such as a filler made of a fire extinguishing material, such as perfluorohexanone, a fluorinating agent, etc.
  • the box body 100 includes a box guard plate 110 and a box shell 120.
  • the box shell 120 can be understood as a lower box.
  • the lower box shown in Figure 2 is a partial structure of the lower box, that is, the box bottom plate of the lower box and the side beam with a cavity, and the inner wall of the cavity defines a pressure relief channel 121 (described in detail below).
  • the bottom plate of the box body is a bottom cold plate, which can dissipate heat for the battery module.
  • the box body guard plate 110 can be understood as a bottom guard plate.
  • the box body shell 120 serves to separate the battery module and the exhaust chamber 101.
  • the box body bottom plate of the box body shell 120 can carry the battery module.
  • the box body shell 120 and the box body guard plate 110 are connected, and the box body shell 120 and the box body guard plate 110 jointly define the exhaust chamber 101.
  • the buffer support member 200 abuts between the box shell 120 and the box guard plate 110 .
  • There are multiple buffer support members 200 and the multiple buffer support members 200 are distributed in an array.
  • box shell 120 may also be a box cover, or the box shell 120 includes both the box cover and the lower box.
  • the type of the box shell 120 is not limited.
  • the ratio of the volume of the accommodating inner cavity 201 to the volume of the buffer support 200 is less than three quarters, so that the buffer support 200 has a certain wall thickness.
  • the ratio of the volume of the accommodating inner cavity to the volume of the buffer support 200 can be one half.
  • the buffer support member 200 is generally supported by a foamed polymer or a silicone-type support, and is waterproof and resistant to low temperatures.
  • the buffer support member 200 is a rectangular parallelepiped structure, and the accommodating inner cavity 201 may also be a rectangular inner cavity.
  • the box shell 120 is provided with a pressure relief channel 121 and a pressure relief port 122, and the exhaust chamber 101, the pressure relief channel 121 and the pressure relief port 122 are connected in sequence.
  • pressure relief ports 122 there may be a plurality of pressure relief ports 122 , and the shape of the pressure relief ports 122 is a circular pressure relief port 122 .
  • the battery box In order to filter the high-temperature shell and prevent the high-temperature particles from directly being discharged and encountering air to cause open flames, the battery box also includes a filter plate 300, which is arranged in the exhaust chamber 101.
  • the filter plate 300 is provided with a first filter hole 301, and the first filter hole 301 is configured to filter the high-temperature particles in the exhaust chamber 101.
  • a plurality of first filtering holes 301 are provided on the filter plate 300. Large high-temperature particles will completely block the first filter hole 301 on the filter plate 300. On the one hand, it also has a certain high-temperature small particle filtering effect.
  • a second filter hole 302 is also provided on the filter plate 300. The inner diameter of the first filter hole 301 is smaller than the inner diameter of the second filter hole 302. In this way, the second filter hole 302 can avoid the situation where the first filter hole 301 is blocked and the high-temperature particles cannot be filtered. Among them, the number of the second filter holes 302 is also multiple.
  • the filter plate 300 also uses filter holes of different sizes, which, on the one hand, prevent larger high-temperature particles from completely blocking the first filter hole 301, and on the other hand, have a certain high-temperature small particle filtering effect to prevent high-temperature particles from directly discharging and encountering air to cause open flames.
  • the high-temperature flue gas in the exhaust chamber 101 can pass through the filter plate 300 and then enter the pressure relief channel 121 and the pressure relief port 122 .
  • filter plates 300 there are multiple filter plates 300, some of the filter plates 300 are arranged in a straight line to form a first column of filter plates 300, and another part of the filter plates 300 are arranged in a straight line to form a second column of filter plates 300, and the first column of filter plates 300 and the second column of filter plates 300 are distributed at intervals.
  • the pressure relief groove 123 is a rectangular groove.
  • the number of the pressure relief grooves 123 is multiple and distributed in an array.
  • the pressure relief groove 123 can also be a circular groove.
  • the shape of the pressure relief groove 123 is not limited.
  • the battery cells in the battery module of the battery pack are arranged on the box shell 120, and the area of the side of the battery cell in contact with the box shell 120 is larger than the opening area of the notch of the pressure relief groove 123. That is to say, the side of the battery cell in contact with the box shell 120 can cover the notch of the pressure relief groove 123.
  • the notch has a certain accommodating space, when other surfaces of the battery cell are constrained, part of the non-constrained surface can be reserved through the pressure relief groove 123, so that when the battery pack loses control and causes internal pressure to increase, high-temperature substances are discharged from the non-constrained surface of the battery cell, and the high-temperature substances break through the box shell 120, that is, the box shell 120 ruptures and the pressure relief groove 123 ruptures, and enters the exhaust chamber 101.
  • a pressure relief hole can also be provided on the box shell 120, and the pressure relief hole is a through hole.
  • a pressure relief plate (not shown) is provided on the pressure relief hole, and the pressure relief plate covers the pressure relief hole.
  • the pressure relief plate has a weak area.
  • the weak area here can be understood as an area where an annular groove is provided on the pressure relief plate.
  • the annular groove can reduce the thickness of a part of the pressure relief plate, so that when the high-temperature material is discharged from the non-constrained surface of the battery cell, the weak area can be broken, so that the high-temperature material can enter the exhaust chamber 101 through the pressure relief hole.
  • the pressure relief plate can be made of PET film (polyester substrate) or other plastic polymers, or it can be a hard plate body with a weak area, such as a mica board.
  • the present disclosure provides a battery case, which includes a case body 100, a buffer support member 200 and a filler 400.
  • the case body 100 is provided with an exhaust chamber 101, the buffer support member 200 is arranged in the exhaust chamber 101, the buffer support member 200 has an accommodating inner cavity 201, and the filler 400 is arranged in the accommodating inner cavity 201; wherein the buffer support member 200 is configured to release the filler 400 in the event of rupture, so as to cool down or extinguish the smoke in the exhaust chamber 101.
  • the battery case provided in this embodiment proposes an improvement plan for exhaust cooling at the bottom of the battery pack and reducing the risk of open flames.
  • the buffer support 200 is changed to a hollow structure with a built-in phase change filler or a filler made of a fire extinguishing material.
  • the internal phase change filler or fire extinguishing material is exposed to enhance the cooling of the smoke in the exhaust chamber 101 and achieve the effect of suppressing open flames.
  • the filter plate 300 also uses filter holes of different sizes, which can prevent larger high-temperature particles from completely blocking the first filter hole 301, and also have a certain high-temperature small particle filtering effect to prevent high-temperature particles from igniting open flames when they encounter air after being directly discharged.
  • the present disclosure provides a battery pack, which includes a battery module and the above-mentioned battery case, the battery module is arranged in the battery case, and the battery pack has all the functions of the above-mentioned battery case.
  • the present disclosure provides a battery case and a battery pack, which can cool the exhaust gas from the battery pack and suppress open flames by releasing the filler when the buffer support member is ruptured.
  • the battery case proposes an improvement plan for cooling the exhaust gas at the bottom of the battery pack and reducing the risk of open flames.

Landscapes

  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un boîtier de batterie et un bloc-batterie, appartenant au domaine technique des batteries. Le boîtier de batterie comprend un corps de boîtier (100), des éléments de support d'amortissement (200) et une charge (400). Le corps de boîtier (100) est pourvu d'une chambre de décharge de gaz (101). Les éléments de support d'amortissement (200) sont disposés dans la chambre d'évacuation de gaz (101). Chaque élément de support d'amortissement (200) est pourvu d'une cavité interne de réception (201). La charge (400) est disposée dans la cavité interne de réception (201). Chaque élément de support d'amortissement (200) est conçu pour libérer la charge (400) lorsque l'élément de support d'amortissement (200) est cassé, de façon à refroidir le gaz de combustion dans la chambre d'évacuation de gaz (101) ou à éteindre un incendie, de telle sorte que le gaz évacué d'un bloc-batterie peut être refroidi et l'effet de suppression d'une flamme ouverte peut être obtenu.
PCT/CN2024/098106 2023-06-09 2024-06-07 Boîtier de batterie et bloc-batterie Ceased WO2024251262A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202321473795.9U CN220042111U (zh) 2023-06-09 2023-06-09 电池箱体及电池包
CN202321473795.9 2023-06-09

Publications (1)

Publication Number Publication Date
WO2024251262A1 true WO2024251262A1 (fr) 2024-12-12

Family

ID=88733668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/098106 Ceased WO2024251262A1 (fr) 2023-06-09 2024-06-07 Boîtier de batterie et bloc-batterie

Country Status (2)

Country Link
CN (1) CN220042111U (fr)
WO (1) WO2024251262A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN220042111U (zh) * 2023-06-09 2023-11-17 兰钧新能源科技有限公司 电池箱体及电池包
CN222168592U (zh) * 2024-03-28 2024-12-13 惠州亿纬锂能股份有限公司 电池箱及电池包
CN222883789U (zh) * 2024-03-29 2025-05-16 宁德时代新能源科技股份有限公司 电池箱体、电池及用电装置
CN120237362B (zh) * 2025-05-30 2025-08-22 江苏正力新能电池技术股份有限公司 电池包及其制备方法、脱胶检测方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111668406A (zh) * 2019-03-08 2020-09-15 比亚迪股份有限公司 电池托盘、动力电池包及车辆
WO2021191921A1 (fr) * 2020-03-26 2021-09-30 Tvs Motor Company Limited Structure de boîtier de batterie
CN216055028U (zh) * 2021-11-01 2022-03-15 中航锂电科技有限公司 电池箱以及电池装置
US20220255184A1 (en) * 2021-02-09 2022-08-11 Audi Ag Degassing device, battery, and motor vehicle
CN218351654U (zh) * 2022-09-09 2023-01-20 江苏正力新能电池技术有限公司 电池包
CN115966832A (zh) * 2023-02-27 2023-04-14 上汽大众汽车有限公司 防热扩散的电池包箱体
CN220042111U (zh) * 2023-06-09 2023-11-17 兰钧新能源科技有限公司 电池箱体及电池包
CN220065997U (zh) * 2023-05-30 2023-11-21 上海兰钧新能源科技有限公司 电池包及其收集腔结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111668406A (zh) * 2019-03-08 2020-09-15 比亚迪股份有限公司 电池托盘、动力电池包及车辆
WO2021191921A1 (fr) * 2020-03-26 2021-09-30 Tvs Motor Company Limited Structure de boîtier de batterie
US20220255184A1 (en) * 2021-02-09 2022-08-11 Audi Ag Degassing device, battery, and motor vehicle
CN216055028U (zh) * 2021-11-01 2022-03-15 中航锂电科技有限公司 电池箱以及电池装置
CN218351654U (zh) * 2022-09-09 2023-01-20 江苏正力新能电池技术有限公司 电池包
CN115966832A (zh) * 2023-02-27 2023-04-14 上汽大众汽车有限公司 防热扩散的电池包箱体
CN220065997U (zh) * 2023-05-30 2023-11-21 上海兰钧新能源科技有限公司 电池包及其收集腔结构
CN220042111U (zh) * 2023-06-09 2023-11-17 兰钧新能源科技有限公司 电池箱体及电池包

Also Published As

Publication number Publication date
CN220042111U (zh) 2023-11-17

Similar Documents

Publication Publication Date Title
WO2024251262A1 (fr) Boîtier de batterie et bloc-batterie
JP7489330B2 (ja) パック電池
KR102768757B1 (ko) 방폭밸브, 배터리 팩 및 장치
EP4179595B1 (fr) Dispositif de batterie
CN112448077B (zh) 储能模块
CN215816174U (zh) 一种电池模组及电池包
CN209183609U (zh) 电池包
JP7570708B2 (ja) 断熱部材を含む電池モジュール及びこれを含む電池パック
JP2023550400A (ja) 電池の筐体、電池、電力消費装置、電池の製造方法と装置
JP2019514191A (ja) バッテリーシステム内の熱暴走ガスを管理する方法及び装置
WO2023273886A1 (fr) Compartiment inférieur de bloc-batterie, bloc-batterie et véhicule
JP2014135234A (ja) 電池パック
CN213124586U (zh) 一种电池包容纳装置
JP2015533609A (ja) 携帯電池駆動式の電子機器用火災封じ込めケース
CN111617410A (zh) 灭火装置
JP7640142B2 (ja) 遮断プレートを含む電池セルアセンブリー及び前記電池セルアセンブリーを含む電池パック
WO2023091829A1 (fr) Boîtier de batterie rechargeable et ensemble évent d'emballement thermique associé
WO2025167315A1 (fr) Élément de batterie, batterie et appareil électrique
CN115803941A (zh) 包括用于抑制热扩散的结构的电池组
CN215771408U (zh) 一种电池包结构
JP7460321B2 (ja) 電池収納体
CN115347317A (zh) 电池模块及电池组
WO2025140458A1 (fr) Boîtier de batterie, bloc-batterie et centrale électrique de stockage d'énergie
CN217405636U (zh) 储能装置
CN224177504U (zh) 泄压装置及电池包

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: 24818789

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE