WO2024254764A1 - Bloc-batterie et dispositif électrique - Google Patents

Bloc-batterie et dispositif électrique Download PDF

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Publication number
WO2024254764A1
WO2024254764A1 PCT/CN2023/100019 CN2023100019W WO2024254764A1 WO 2024254764 A1 WO2024254764 A1 WO 2024254764A1 CN 2023100019 W CN2023100019 W CN 2023100019W WO 2024254764 A1 WO2024254764 A1 WO 2024254764A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
cooling plate
guide channel
battery
explosion
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/CN2023/100019
Other languages
English (en)
Chinese (zh)
Inventor
韩劼成
陈成
刘勇
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 Coperation Ltd
Original Assignee
Batterotech Coperation 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 Coperation Ltd filed Critical Batterotech Coperation Ltd
Priority to PCT/CN2023/100019 priority Critical patent/WO2024254764A1/fr
Publication of WO2024254764A1 publication Critical patent/WO2024254764A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • 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 application relates to the field of new energy technology, and in particular to a battery pack and an electrical device.
  • a battery pack comprising:
  • an isolation component which is disposed in the box body and forms a receiving cavity and a guide channel inside the box body, wherein the guide channel is connected to the exhaust hole, and the isolation component is formed with a plurality of guide holes connecting the receiving cavity and the guide channel;
  • a plurality of battery cells are contained in the accommodating cavity and are arranged one by one corresponding to the plurality of flow guide holes.
  • Each of the battery cells is provided with an explosion-proof valve, and one end of each of the battery cells provided with the explosion-proof valve is in contact with the inner wall of the accommodating cavity, and the explosion-proof valve faces the corresponding flow guide hole.
  • the box body includes a top wall, a bottom wall arranged opposite to the top wall, and an annular wall connecting the top wall and the bottom wall, and the exhaust hole is opened in the annular wall.
  • the guide channel is formed in the middle of the box body and extends along the first direction, the accommodating cavity is distributed on both sides of the guide channel in the second direction, the second direction is perpendicular to the first direction, and each battery cell is provided with a pole at one end away from the explosion-proof valve.
  • the accommodating chamber and the guide channel are formed in plurality, and the plurality of accommodating chambers and the plurality of guide channels are arranged in one-to-one correspondence, and the accommodating chamber is connected to the corresponding guide channel through the guide hole.
  • the isolation component includes a cooling plate, and the cooling plate constitutes the guide channel and at least one side wall of the accommodating cavity.
  • the cooling plate includes a first cooling plate and a second cooling plate, and the two second cooling plates are relatively arranged on the same side of the first cooling plate, and the two second cooling plates, the first cooling plate and the inner wall of the box together form the guide channel, and the guide holes are opened on the second cooling plates; each second cooling plate, the first cooling plate and the inner wall of the box together form a containing cavity.
  • the first cooling plate is suspended in the box, and two second cooling plates are disposed on opposite sides of the first cooling plate to form the accommodating cavity and the guide channel on opposite sides of the first cooling plate.
  • the isolation assembly further includes a partition plate, and the partition plate is disposed between two opposite second cooling plates located on the same side of the first cooling plate.
  • a heat conductive adhesive layer is further included, and the heat conductive adhesive layer is arranged in the accommodating cavity.
  • the battery cell is sandwiched between the battery cell and the cooling plate.
  • a sealing ring is arranged along the circumference of the explosion-proof valve.
  • the battery cell is a rectangular lithium-ion battery.
  • a phase change heat absorption structure is arranged in the flow guide channel.
  • the phase change temperature of the phase change material constituting the phase change heat absorption structure is 50°C to 55°C.
  • the phase change material constituting the phase change heat absorption structure is paraffin.
  • the phase change material constituting the phase change heat absorption structure is coated on the inner wall of the guide channel.
  • An electrical device comprises a battery pack as described in any one of the preferred embodiments above.
  • the power-consuming device is a new energy vehicle
  • the battery pack is disposed at the bottom of the new energy vehicle.
  • the isolation component can effectively separate the accommodating chamber from the guide channel, and the high-temperature and high-pressure substances entering the guide channel are eventually discharged in a direction from the exhaust hole and are not easy to flow back into the accommodating chamber. It can be seen that when some battery cells experience thermal runaway, other battery cells are less affected, so the entire battery pack can be effectively prevented from thermal runaway, thereby improving safety performance.
  • FIG1 is a schematic diagram of the structure of a battery pack in a preferred embodiment of the present application.
  • FIG2 is an exploded view of the battery pack shown in FIG1 ;
  • FIG3 is a schematic diagram of the structure of the battery pack shown in FIG1 with the upper cover omitted;
  • FIG. 4 is a schematic diagram of the structure of a battery cell in the battery pack shown in FIG. 1 .
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of this application, “Multiple” means at least two, such as two, three, etc., unless otherwise clearly defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.
  • installed can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.
  • the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.
  • a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
  • the present application discloses an electric device and a battery pack 10 .
  • the electric device includes the battery pack 10 and can be provided with electric energy by the battery pack 10 .
  • the above-mentioned electrical devices can be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, electric tools, energy storage equipment, amusement equipment, elevators and lifting equipment, etc.
  • the vehicles can be fuel vehicles, gas vehicles or new energy vehicles.
  • New energy vehicles can be pure electric vehicles, hybrid vehicles, Hybrid vehicles or extended-range vehicles, etc.
  • spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.
  • electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys or electric airplane toys, etc.
  • power tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.
  • energy storage equipment can be energy storage walls, base station energy storage, container energy storage, etc.
  • amusement equipment can be carousels, jumping machines, etc. This application does not impose special restrictions on the above-
  • the battery pack 10 can be used as a driving power source to replace fossil fuels to provide driving power.
  • the battery pack 10 in the preferred embodiment of the present application includes a box body 100 , an isolation component 200 and a battery cell 300 .
  • the box 100 has a receiving space inside for receiving the isolation assembly 200 and the battery cell 300.
  • the outer contour of the box 100 can be a rectangular shape or the like, which can be adapted to the electrical device used.
  • the box 100 has an exhaust hole 121. When the battery cell 300 inside the box 100 undergoes thermal runaway, the high-temperature and high-pressure substances generated can be discharged outward from the exhaust hole 121 to maintain the pressure inside the box 100 stable and avoid the explosion of the box 100 as a whole.
  • valve components such as an exhaust valve and a safety valve can also be provided on the exhaust hole 121.
  • the box body 100 includes a top wall (not marked in the figure), a bottom wall arranged opposite to the top wall, and an annular wall (not marked in the figure) connecting the top wall (not marked in the figure) and the bottom wall, and the exhaust hole 121 is opened in the annular wall.
  • the top wall and the bottom wall are arranged opposite to each other along the height direction of the box body 100.
  • the box body 100 includes a bottom plate 110 and an upper cover 120.
  • the upper cover 120 is buckled on the bottom plate 110 and can be detachably connected to the bottom plate 110 by threaded fasteners. In this way, it is convenient to inspect the interior of the battery pack 10.
  • the upper cover 120 is a box-shaped structure with an opening on one side, and its top wall constitutes the top wall of the box body 100, and its side wall constitutes the annular wall of the box body 100.
  • the isolation assembly 200 is disposed in the box body 100, and a receiving chamber 101 and a flow guiding channel 102 are formed inside the box body 100.
  • the flow guiding channel 102 is connected to the exhaust hole 121, and the isolation assembly 200 is formed with a plurality of flow guiding holes 103 connecting the receiving chamber 101 and the flow guiding channel 102. It should be noted that the receiving chamber 101 and the flow guiding channel 102 are only connected through the exhaust hole 121, and other positions are isolated from each other.
  • the battery cell 300 is provided in plurality, and the number is the same as the number of the guide holes 103.
  • the accommodating cavity 101 and the guide channel 102 are connected through 24 exhaust holes 121, and the battery cell 300 is provided with 24.
  • the battery cell 300 can be a lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, and its outer contour can be a cylinder, a flat body, a rectangular parallelepiped or other shapes, but it is not limited thereto.
  • the battery pack 10 generally also includes a battery management system (BMS), and multiple battery cells 300 can be electrically connected in series, parallel, or a mixture of series and parallel, and communicate with the battery management system.
  • BMS battery management system
  • the above-mentioned battery management system controls and monitors the working status of each battery cell 300.
  • multiple battery cells 300 can also be connected in series and/or in parallel first, and form a battery module with the module management system, and then multiple battery modules are electrically connected in series, parallel, or a mixture of series and parallel, and together with the battery management system, form a battery pack 10.
  • Each battery cell 300 and the battery cell 300 and the battery management system can be electrically connected through a busbar.
  • each battery cell 300 includes a housing (not shown) and a battery cell assembly (not shown) contained in the housing.
  • Each battery cell 300 is provided with an explosion-proof valve 310.
  • the explosion-proof valve 310 is installed in the housing of the battery cell 300. When the battery cell 300 has thermal runaway, the explosion-proof valve 310 opens so that high-temperature and high-pressure substances are ejected from the housing.
  • the battery cell 300 in this embodiment is a rectangular lithium battery.
  • the battery cell 300 has four side surfaces and two top surfaces, and the explosion-proof valve 310 is disposed on one of the top surfaces.
  • a plurality of battery cells 300 are accommodated in the accommodating chamber 101 and are arranged in one-to-one correspondence with a plurality of flow guide holes 103. Moreover, each battery cell 300 is provided with an explosion-proof valve 310, one end of which is in contact with the inner wall of the accommodating chamber 101, and the explosion-proof valve 310 is directed toward the corresponding flow guide hole 103.
  • the aperture of the flow guide hole 102 is slightly larger than the diameter of the explosion-proof valve 310, so the explosion-proof valve 310 is located within the range of the flow guide hole 102 as a whole.
  • the battery cell 300 is in contact with the inner wall of the accommodating chamber 101, so that there is no gap between the edge of the explosion-proof valve 310 and the inner wall of the accommodating chamber 101.
  • the high-temperature and high-pressure material ejected from the explosion-proof valve 310 will be directly sprayed into the flow guide hole 103 and enter the flow guide channel 102, and will not spread into the accommodating chamber 101.
  • a sealing ring (not shown) may be provided along the circumference of the explosion-proof valve 310 .
  • the high-temperature and high-pressure substances After entering the diversion channel 102, the high-temperature and high-pressure substances will eventually be discharged outward from the exhaust holes 121, thereby realizing the directional discharge of the high-temperature and high-pressure substances. Since the other positions between the accommodating cavity 101 and the diversion channel 102 except the diversion holes 103 are separated, the high-temperature and high-pressure substances entering the diversion channel 102 are not easy to flow back to the accommodating cavity 101. It can be seen that when some battery cells 300 in the above-mentioned battery pack 10 have thermal runaway, the other battery cells 300 are less affected, so the entire battery pack 10 can be effectively prevented from thermal runaway, thereby improving safety performance.
  • the guide channel 102 is formed in the middle of the box body 100 and extends along the first direction.
  • the accommodating cavity 101 is distributed on both sides of the guide channel 102 in the second direction.
  • the second direction is perpendicular to the first direction.
  • Each battery cell 300 is provided with a pole 320 at one end away from the explosion-proof valve 310.
  • the first direction may be the width direction of the box 100
  • the second direction may be the length direction of the box 100.
  • the first direction and the second direction can also be interchanged.
  • the guide channel 102 is arranged in the middle of the box 100, and the battery cells 300 are arranged on both sides of the guide channel 102.
  • the layout is reasonable and can improve the space utilization rate in the box 100.
  • the path of the guide channel 102 is short, which can quickly guide out the high-temperature and high-pressure substances sprayed out of each battery cell 300.
  • the pole 320 is used to connect with components such as busbars, so as to realize electrical connection between battery cells 300 and between battery cells 200 and other components.
  • the pole 320 is arranged at one end of the battery cell 30 away from the explosion-proof valve 310, so that the pole 320 of each battery cell 300 faces outward, thereby facilitating the connection operation of the pole 320.
  • the guide channel 102 and the accommodating cavity 101 do not overlap in the height direction of the box body 100, and the battery cell 300 is placed flat in the accommodating cavity 101. Therefore, the height dimension of the box body 100 can be significantly reduced, thereby reducing the height of the battery pack 10 and improving the volume capacity density of the battery pack 10.
  • the above battery pack 10 is applied to new energy vehicles, it is beneficial to the improvement and utilization of the space of the entire vehicle.
  • a plurality of accommodating cavities 101 and a plurality of guiding channels 102 are formed, and the plurality of accommodating cavities 101 and the plurality of guiding channels 102 are arranged in one-to-one correspondence, and the accommodating cavities 101 are connected with the corresponding guiding channels 102 through the guiding holes 103 .
  • the multiple accommodating chambers 101 are not connected to each other, and the multiple guide channels 102 are also not connected to each other.
  • the multiple battery cells 300 are distributed in the multiple accommodating chambers 101.
  • 24 battery cells 300 are respectively arranged in 4 accommodating chambers 101.
  • the isolation assembly 200 includes a cooling plate 210 .
  • the cooling plate 210 constitutes at least one side wall of the guiding channel 102 and the accommodating cavity 101 .
  • the cooling plate 210 may be provided with a cooling channel (not shown) inside, and may also be provided with a The inlet and outlet (not shown) are located outside the box 100.
  • the coolant or cooling gas can circulate in the cooling channel through the inlet and outlet, thereby taking away the heat inside the box 100 to cool the battery cell 300. Since the cooling plate 210 can form at least one side wall of the accommodating cavity 101, the battery cell 300 can directly exchange heat with the cooling plate 210, thereby improving the cooling effect on the battery cell 300.
  • the cooling plate 210 can also constitute at least one side wall of the guide channel 102, the cooling plate 210 can also directly exchange heat with the high-temperature and high-pressure material entering the guide channel 102, thereby cooling the high-temperature and high-pressure material. In this way, the temperature of the high-temperature and high-pressure material can be reduced to a certain extent before being discharged through the exhaust hole 121, thereby further avoiding adverse effects on other battery cells 300. Moreover, after the temperature of the high-temperature and high-pressure material discharged through the exhaust hole 121 drops, it is not easy to cause subsequent chain effects such as fire and explosion.
  • the battery pack 10 further includes a thermally conductive adhesive layer 500, which is disposed in the accommodating cavity 101 and clamped between the battery cell 300 and the cooling plate 210.
  • the thermally conductive adhesive layer 500 can improve the heat exchange efficiency between the battery cell 300 and the cooling plate 210, thereby further improving the cooling effect on the battery cell 300.
  • the cooling plate 210 includes a first cooling plate 211 and a second cooling plate 212, and the two second cooling plates 212 are arranged on the same side of the first cooling plate 210.
  • the two second cooling plates 212, the inner wall of the box 100 and the first cooling plate 211 are collectively arranged to form a guide channel 102, and the guide holes 103 are opened on the second cooling plates 212; each second cooling plate 212, the inner wall of the box 100 and the first cooling plate 211 are collectively arranged to form a receiving cavity 101.
  • the first cooling plate 211 is arranged substantially perpendicular to the height direction of the box 100, and the second cooling plate 212 is substantially perpendicular to the first cooling plate 211.
  • the guide channel 102 can extend along the length or width direction of the box 100, and two accommodating cavities 101 can be formed on one side of the first cooling plate 211, and the two accommodating cavities 101 are respectively located on opposite sides of the width direction of the guide channel 102. Both are provided with cooling channels, and the cooling channels of the two are interconnected.
  • the first cooling plate 211 and the second cooling plate 212 can constitute the side wall of the guide channel 102 and the side wall of the accommodating cavity 101. In other words, at least two side walls of the accommodating cavity 101 and the guide channel 102 will be formed by the cooling plate 210.
  • the first cooling plate 211 and the second cooling plate 212 can not only play the role of isolating the accommodating cavity 101 and the guide channel 102 in structure, but also play the role of dissipating heat for the battery cell 300, and can also exchange heat with the high-temperature and high-pressure materials in the battery cell 300 and the guide channel 102. Therefore, the cooling effect of the accommodating cavity 101 and the guide channel 102 can be improved by the cooling plate 210 without adding additional structures.
  • the structural reuse of the cooling plate 210 simplifies the volume of the heat dissipation structure, leaving more structures for placing the battery cells 300, improving the space occupancy rate of the battery cells 300 in the accommodating cavity 101, and thus improving the energy density of the battery pack.
  • a phase-change heat-absorbing structure (not shown) is provided in the flow-guiding channel 102.
  • the phase-change heat-absorbing structure can be formed of a phase-change heat-absorbing material such as paraffin.
  • the phase-change heat-absorbing structure can absorb heat and undergo phase change, thereby preventing the temperature of the cooling plate 210 constituting the flow-guiding channel 102 from rising suddenly, affecting the heat dissipation of the battery cells 300 that are also in thermal contact with the cooling plate 210, and preventing the high-temperature and high-pressure substances from causing a temperature rise on other battery cells 300, leading to a chain reaction.
  • the phase change temperature of the phase change endothermic material is higher than the normal operating temperature of the battery cell 300 (about 35°C-45°C), but lower than the temperature of the high temperature and high pressure material (about 500°C-600°C). Therefore, when the battery pack 10 is working normally, the phase change endothermic material can be in a state where the phase change latent heat is not released. Only when the battery pack 10 has thermal runaway, its phase change latent heat will be released to play a cooling role.
  • the phase change temperature of the phase change material is preferably 50°C-55°C, which is slightly higher than the normal operating temperature of the battery cell 300. Therefore, when the high-temperature and high-pressure material is ejected, the phase change material will participate in the phase change and absorb heat in a very short time. During the phase change and heat absorption process of the phase change material, the temperature can be kept constant. The temperature is controlled near the phase change temperature to further avoid a chain reaction caused by the high temperature and high pressure material on the battery cell 300.
  • the phase change material is preferably coated on the inner wall of the guide channel 102. In this way, when thermal runaway occurs and the heat in the heat conduction channel 102 spreads from the out-of-control position to the surrounding area, the heat absorption effect of the phase change material can greatly reduce the heat spread speed in the heat conduction channel 102, further reducing the probability of a chain reaction.
  • the cooling plate 210 can also play a role in heat equalization, so that the temperature of the battery cell 300 in the accommodating cavity 101 on both sides of the guide channel 102 tends to be consistent.
  • the first cooling plate 211 is suspended in the box body 100 , and two second cooling plates 212 are disposed on opposite sides of the first cooling plate 211 to form a receiving cavity 101 and a guide channel 102 on opposite sides of the first cooling plate 211 .
  • the isolation assembly 200 can form two layers of accommodating chambers 101 in the height direction of the box 100, and guide channels 102 are formed on opposite sides of the first cooling plate 211. In this way, multiple battery cells 300 are stacked in two layers in the box 100, so the space utilization rate is higher.
  • the isolation assembly 200 further includes a partition plate 220 , and the partition plate 220 is disposed between two opposite second cooling plates 212 located on the same side of the first cooling plate 211 .
  • the partition 220 can divide the flow guide channel 102 into two, thereby separating one flow guide channel 102 into two independent flow guide channels 102.
  • the high-temperature and high-pressure substances ejected from the flow guide holes 103 can be blocked by the partition 220, thereby preventing the high-temperature and high-pressure substances from affecting the battery cell 300 in the accommodating cavity 101 on the other side.
  • the battery pack 10 and the electric device described above are provided with an explosion-proof valve 310 at one end of the battery cell 300 and the capacitor.
  • the inner wall of the receiving chamber 101 is in close contact, so there is no gap between the edge of the explosion-proof valve 310 and the inner wall of the receiving chamber 101. Therefore, when the battery cell 300 has thermal runaway and causes the explosion-proof valve 310 to open, the high-temperature and high-pressure substances ejected from the explosion-proof valve 310 will be directly sprayed to the guide hole 103 and enter the guide channel 102, and will not spread to the receiving chamber 101.
  • the isolation component 200 can effectively separate the receiving chamber 101 from the guide channel 102, and the high-temperature and high-pressure substances entering the guide channel 102 are finally discharged in a direction from the exhaust hole 121, and are not easy to flow back to the receiving chamber 101. It can be seen that when some battery cells 300 have thermal runaway, other battery cells 300 are less affected, so the entire battery pack 10 can be effectively prevented from thermal runaway, thereby improving safety performance.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente demande porte sur un bloc-batterie et un dispositif électrique. Le bloc-batterie comprend un corps de boîtier, un ensemble d'isolation et une pluralité d'éléments de batterie, l'ensemble d'isolation étant disposé dans le corps de boîtier et formant une cavité de réception et un canal de guidage d'écoulement dans le corps de boîtier. Étant donné qu'une extrémité de chaque élément de batterie pourvue d'une soupape antidéflagrante est fixée à une paroi interne de la cavité de réception, un espace n'existe pas entre un bord de la soupape antidéflagrante et la paroi interne de la cavité de réception. Ainsi, lorsque les éléments de batterie sont soumis à un emballement thermique, puis les soupapes antidéflagrantes sont ouvertes, des substances à haute température et haute pression éjectées des soupapes antidéflagrantes sont directement pulvérisées dans des trous de guidage d'écoulement et entrent dans le canal de guidage d'écoulement sans s'étendre dans la cavité de réception. De plus, l'ensemble d'isolation peut séparer efficacement la cavité de réception du canal de guidage d'écoulement, et enfin, les substances à haute température et haute pression entrant dans le canal de guidage d'écoulement sont évacuées de manière directionnelle par des trous d'échappement et sont moins susceptibles de refluer vers la cavité de réception. Par conséquent, lorsque certains élément de batterie sont soumis à un emballement thermique, d'autres éléments de batterie sont moins affectés, et ainsi l'ensemble du bloc-batterie peut être efficacement empêché d'être soumis à un emballement thermique, ce qui permet d'améliorer les performances de sécurité.
PCT/CN2023/100019 2023-06-13 2023-06-13 Bloc-batterie et dispositif électrique Ceased WO2024254764A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/100019 WO2024254764A1 (fr) 2023-06-13 2023-06-13 Bloc-batterie et dispositif électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/100019 WO2024254764A1 (fr) 2023-06-13 2023-06-13 Bloc-batterie et dispositif électrique

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WO2024254764A1 true WO2024254764A1 (fr) 2024-12-19

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Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2019091628A (ja) * 2017-11-15 2019-06-13 スカッドエレクトロニクスジャパン株式会社 リチウムイオン電池モジュール
CN110190211A (zh) * 2018-12-29 2019-08-30 比亚迪股份有限公司 电池托盘、动力电池包及车辆
CN111384328A (zh) * 2018-12-29 2020-07-07 比亚迪股份有限公司 电池托盘、动力电池包及车辆
CN115133191A (zh) * 2022-07-20 2022-09-30 天津市捷威动力工业有限公司 一种电池包、其排气方法和电动装置
US20220320651A1 (en) * 2021-03-31 2022-10-06 Contemporary Amperex Technology Co., Limited Box of battery, battery, power consumption device, and method and device for producing battery
CN218586254U (zh) * 2022-11-30 2023-03-07 蜂巢能源科技股份有限公司 一种电池包

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019091628A (ja) * 2017-11-15 2019-06-13 スカッドエレクトロニクスジャパン株式会社 リチウムイオン電池モジュール
CN110190211A (zh) * 2018-12-29 2019-08-30 比亚迪股份有限公司 电池托盘、动力电池包及车辆
CN111384328A (zh) * 2018-12-29 2020-07-07 比亚迪股份有限公司 电池托盘、动力电池包及车辆
US20220320651A1 (en) * 2021-03-31 2022-10-06 Contemporary Amperex Technology Co., Limited Box of battery, battery, power consumption device, and method and device for producing battery
CN115133191A (zh) * 2022-07-20 2022-09-30 天津市捷威动力工业有限公司 一种电池包、其排气方法和电动装置
CN218586254U (zh) * 2022-11-30 2023-03-07 蜂巢能源科技股份有限公司 一种电池包

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