WO2024250482A1 - 电池及用电装置 - Google Patents

电池及用电装置 Download PDF

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Publication number
WO2024250482A1
WO2024250482A1 PCT/CN2023/119123 CN2023119123W WO2024250482A1 WO 2024250482 A1 WO2024250482 A1 WO 2024250482A1 CN 2023119123 W CN2023119123 W CN 2023119123W WO 2024250482 A1 WO2024250482 A1 WO 2024250482A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure relief
battery
filter
relief mechanism
channel
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.)
Pending
Application number
PCT/CN2023/119123
Other languages
English (en)
French (fr)
Inventor
吴凯
柯剑煌
李耀
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.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology 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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to JP2025541677A priority Critical patent/JP2026503476A/ja
Priority to KR1020257023903A priority patent/KR20250126075A/ko
Priority to EP23940360.3A priority patent/EP4636922A1/en
Publication of WO2024250482A1 publication Critical patent/WO2024250482A1/zh
Priority to US19/283,247 priority patent/US20250357623A1/en
Anticipated expiration legal-status Critical
Pending 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
    • H01M50/394—Gas-pervious parts or elements
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • 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
    • 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
    • H01M50/358—External gas exhaust passages located on the battery cover or case
    • 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
    • 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
    • H01M50/383—Flame arresting or ignition-preventing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 technical field of battery reliability, and in particular to a battery and an electrical device.
  • Batteries are widely used in various electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc.
  • Batteries can include nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, and secondary alkaline zinc-manganese batteries, etc.
  • the purpose of the embodiments of the present application is to provide a battery and an electrical device to improve the reliability of the battery.
  • an embodiment of the present application provides a battery, comprising a case, a battery module and a pressure relief channel, the battery module being located in the case, the battery module comprising at least one battery cell, each battery cell being provided with a first pressure relief mechanism, and the case having a second pressure relief mechanism; the pressure relief channel connects the first pressure relief mechanism and the second pressure relief mechanism of at least one battery cell, the first pressure relief mechanism being used to release emissions generated inside the battery cell into the pressure relief channel when actuated, the pressure relief channel being used to guide the emissions to the second pressure relief mechanism, and the second pressure relief mechanism being used to release emissions from the pressure relief channel to the outside of the case when actuated; wherein, at least one of the battery cell, the battery module, the case and the pressure relief channel is provided with a filter element, the filter element being provided with filter holes for blocking particulate matter in the emissions from passing through.
  • the first pressure relief mechanism when a battery cell in the battery undergoes thermal runaway, the first pressure relief mechanism is actuated, and emissions generated by the battery cell are released into the pressure relief channel through the first pressure relief mechanism and move along the pressure relief channel to the second pressure relief mechanism; as the thermal runaway continues to intensify, the second pressure relief mechanism is actuated, and emissions in the pressure relief channel are released to the outside of the casing through the second pressure relief mechanism; and in this process, since at least one of the battery cell, battery module, casing and pressure relief channel is provided with a filter element, the filter holes on the filter element can block high-temperature particulate matter in the emissions from passing through, thereby reducing high-temperature particulate matter ejected from the battery, which is beneficial to reducing the risk of excessive exhaust temperature of the battery and improving the reliability of battery use.
  • the first pressure relief mechanism and the filter element are an integrated structure, or the filter element is connected to the shell of the battery cell; when the filter element is provided on the box body, the second pressure relief mechanism and the filter element are an integrated structure, or the filter element is connected to the box body; or the side wall of the box body is provided with filter holes, and the part of the side wall of the box body where the filter holes are provided forms the filter element.
  • the filter element can be flexibly installed on the box body, which is convenient to manufacture.
  • the second pressure relief mechanism when the filter is provided in the box, the second pressure relief mechanism is provided with a filter on the side facing the battery module to prevent particulate matter released by the battery cell from entering the second pressure relief mechanism; and/or, the second pressure relief mechanism is provided with a filter on the side facing away from the battery module to prevent particulate matter released by the second pressure relief mechanism from passing through.
  • the installation position of the filter element is flexible and convenient for processing and manufacturing.
  • the sum of the cross-sectional areas of all the filter holes of the filter element is the filter area; in the case where a filter element is provided on the side of the second pressure relief mechanism facing the battery module, the cross-sectional area of the filter holes on the side of the second pressure relief mechanism facing the battery module is the filter area.
  • the filter element is a first filter element, and the filtering area of the first filter element is larger than the maximum pressure relief area of the second pressure relief mechanism; when a filter element is provided on the side of the second pressure relief mechanism facing away from the battery module, the filter element located on the side of the second pressure relief mechanism facing away from the battery module is the second filter element, and the filtering area of the second filter element is smaller than the maximum pressure relief area of the second pressure relief mechanism.
  • the flow area of the exhaust is reduced along the exhaust path, which can achieve a step-by-step pressure relief effect, which is beneficial to improving the exhaust effect of the exhaust and improving the reliability of battery use; in addition, the gradual reduction of the flow area is also beneficial to reducing design redundancy and reducing manufacturing costs.
  • the plurality of first filters when a plurality of first filters are provided on the side of the second pressure relief mechanism facing the battery module, the plurality of first filters are arranged in sequence along the discharge path of emissions released from the battery cells, and the filtering areas of the plurality of first filters decrease along the discharge path of emissions; when a plurality of second filters are provided on the side of the second pressure relief mechanism facing away from the pressure relief channel, the plurality of second filters are arranged in sequence along the discharge path of emissions released by the second pressure relief mechanism, and the filtering areas of the plurality of second filters decrease along the discharge path of emissions.
  • multi-stage filtration of emissions can be achieved, which is beneficial to reducing the amount of particulate matter emitted.
  • multi-stage pressure relief of emissions can be achieved, and the emission effect of emissions is good, which is beneficial to improving the reliability of battery use.
  • the aperture diameters of the filter holes of the multiple first filters decrease along the discharge path of the emissions; when multiple second filters are provided on the side of the second pressure relief mechanism facing away from the pressure relief channel, the aperture diameters of the filter holes of the multiple second filters decrease along the discharge path of the emissions.
  • step-by-step filtration is beneficial to reducing the probability of filter blockage, reducing the risk of poor pressure relief, and improving the reliability of battery use.
  • the filter element is spaced apart from the second pressure relief mechanism.
  • the filter element includes a plate portion and an annular wall portion arranged around the plate portion, one end of the annular wall portion is connected to the plate portion, and the other end of the annular wall portion is connected to the box body, the annular wall portion is arranged around the second pressure relief mechanism, and at least one of the annular wall portion and the plate portion is provided with a filter hole.
  • the filter element has a simple structure and is easy to process and manufacture.
  • the filter element has a first filter portion and a second filter portion, each of the first filter portion and the second filter portion is provided with a plurality of filter holes, a first discharge path and a second discharge path are formed between the first pressure relief mechanism and the second pressure relief mechanism of at least one battery cell, the first discharge path passes through the filter holes of the first filter portion, and the second discharge path passes through the filter holes of the second filter portion; when the length of the first discharge path is greater than the length of the second discharge path, the aperture diameter of the filter holes of the first filter portion is greater than the aperture diameter of the filter holes of the second filter portion.
  • the aperture of the filter holes of the first filter unit is larger than the aperture of the filter holes of the second filter unit, so that the low-temperature small particles in the emissions flowing along the long discharge path will be directly discharged to the outside of the battery through the filter holes of the first filter unit.
  • the filter holes of the first filter unit will also block the large particles with higher temperatures in the emissions; and the large and small particles with high temperatures in the emissions flowing along the short discharge path will be blocked by the filter holes of the second filter unit and will not be discharged to the outside of the battery, thereby reducing the risk of excessive exhaust temperature of the battery and improving the reliability of the battery.
  • the emissions can be quickly discharged from the battery, reducing the risk of pressure build-up inside the box.
  • any two filter holes are the same, or the pore sizes of at least two filter holes are different.
  • the aperture of the filter hole can be flexibly set, which is convenient for processing and manufacturing.
  • the cross-sectional area of the filter hole with the largest aperture is S
  • the length of the shortest discharge path between the first pressure relief mechanism and the second pressure relief mechanism of at least one battery cell is L, then, That In the figure, the unit of L is m, and the unit of S is mm 2 .
  • the setting makes the cross-sectional area of the largest filter hole of the filter element and the shortest discharge path of the battery cell reasonably designed, reducing the risk of excessive exhaust temperature of the battery and helping to improve the reliability of the battery.
  • the cross-sectional area of the filter hole with the largest aperture is S
  • the shortest discharge path between the first pressure relief mechanism and the second pressure relief mechanism of any battery cell is L
  • the unit of L is m
  • the unit of S is mm 2 .
  • the shortest discharge path of each battery cell and the cross-sectional area of the filter hole with the largest aperture of the filter element are both within a reasonable design range, thereby better improving the reliability of battery use.
  • the cross-sectional area of the largest filter hole of the filter element and the shortest discharge path of the battery cell have a more reasonable design, the risk of excessive exhaust temperature in the battery is reduced, and the battery has better reliability.
  • 0.05m ⁇ L ⁇ 4m In some embodiments, 0.05m ⁇ L ⁇ 4m.
  • the length of the shortest discharge path is within this range, and the shortest discharge path is not designed to be too short, which will result in a short cooling time for the particles, and the high temperature of the particles discharged from the battery will easily cause the external environment of the battery to deteriorate; the shortest discharge path is not designed to be too long, which will result in a long discharge time for the emissions, untimely pressure relief and serious damage to the box.
  • the volume energy density of the battery is E
  • the cross-sectional area of the filter hole with the largest pore size is S
  • the unit of E is Wh/L
  • the unit of S is mm 2 .
  • the setting makes the cross-sectional area of the largest filter hole of the filter element and the volume energy density of the battery have a reasonable design, reducing the risk of excessive exhaust temperature of the battery, which is beneficial to improving the reliability of the battery.
  • the cross-sectional area of the filter hole with the largest pore size of the filter element and the volume energy density of the battery have a more reasonable design, the risk of excessive exhaust temperature in the battery is smaller, and the battery has better reliability in use.
  • the volume energy density E of most batteries is within the above range, so that the above formula can be applied to most batteries and has a wide range of applicability.
  • the cross-sectional area S of the filter hole with the largest aperture is within the above range, and the filter element can effectively intercept most of the high-temperature particulate matter, reducing the risk of excessive exhaust temperature of the battery.
  • the cross-sectional area of the filter hole with the largest aperture is more reasonably designed and can be further reduced, thereby reducing the risk of excessive exhaust temperature of the battery.
  • the pressure relief channel also includes a first sub-pressure relief channel for connecting to a second pressure relief mechanism
  • the battery also includes a partition for separating the battery module from the first sub-pressure relief channel, and the partition is provided with a plurality of first ventilated structures, each first ventilated structure connecting the first pressure relief mechanism and the first sub-pressure relief channel of at least one battery cell.
  • the pressure relief channel includes at least two first sub-pressure relief channels, each of which is connected to a first ventilated structure corresponding to a different battery cell, and the first sub-pressure relief channels are separated by spacer elements.
  • the emissions released by the battery cell enter the first sub-pressure relief channel connected to the battery cell, and the first sub-pressure relief channels are separated by spacing elements, so that the emissions will not directly enter other first sub-pressure relief channels, which helps to reduce the risk of thermal runaway spreading.
  • the pressure relief channel further includes a connecting channel, the wall surface of the partition and the inner wall surface of the box body are arranged to form the connecting channel, and each first sub-pressure relief channel is connected to the second pressure relief mechanism through the connecting channel.
  • the connecting channel is formed by the wall surface of the partition and the inner wall surface of the box body, which has a simple structure and is convenient for processing and manufacturing.
  • the battery module includes at least one column of battery cells, each column of battery cells includes at least one battery cell, each column of battery cells is correspondingly provided with at least one first sub-pressure relief channel, and each first sub-pressure relief channel extends along the arrangement direction of the corresponding column of battery cells; each first ventilated structure corresponding to each column of battery cells is connected to the corresponding first sub-pressure relief channel.
  • the second pressure relief mechanism is located on the side of the end of the battery module along the extension direction of the first sub-pressure relief channel.
  • the emission in the first sub-pressure relief channel can be quickly discharged to the second pressure relief mechanism, and the battery pressure relief and exhaust effect is good.
  • the communication channel is an annular channel, and the annular channel is arranged around the partition.
  • the exhaust discharged from the first sub-pressure relief channel will enter the annular channel and flow along the annular channel, which can extend the exhaust path of the exhaust and thus extend the cooling time of the particulate matter in the exhaust.
  • the risk of excessive exhaust temperature of the battery caused by the discharge of particulate matter outside the battery is small.
  • end plates are provided at both ends of at least one column of battery cells, which are inserted into the annular channel and sealedly connected to the inner wall surface of the box body; the pressure relief channel also includes a second sub-pressure relief channel, which intersects with the first sub-pressure relief channel, and the second sub-pressure relief channel is used to connect the corresponding first sub-pressure relief channel and the annular channel.
  • the emissions released by the battery cells need to flow through the first sub-pressure relief channel, the second sub-pressure relief channel and the annular channel to the second pressure relief mechanism, and finally be discharged out of the battery.
  • This can extend the emission path of the emissions, and the cooling time of the particulate matter in the emissions is long, which is beneficial to reducing the risk of excessive exhaust temperature of the battery.
  • both ends of each column of battery cells are provided with end plates, and each first sub-pressure relief channel is connected to a second sub-pressure relief channel.
  • the released emissions flow into the annular channel through the corresponding first sub-pressure relief channel and second sub-pressure relief channel, then flow through the annular channel to the second pressure relief mechanism, and then are released to the outside of the battery through the second pressure relief mechanism, which is beneficial to improving the reliability of the battery.
  • the pressure relief channel includes a plurality of second sub-pressure relief channels, and the second sub-pressure relief channels are separated by spacer elements.
  • the emissions in the first sub-pressure relief mechanism can be discharged through the multiple second sub-pressure relief channels, which is beneficial to the rapid discharge of emissions, reduces the risks of pressure buildup and excessive temperature inside the box, and improves the reliability of battery use.
  • a plurality of second sub-pressure relief channels are arranged at intervals along the extension direction of the first sub-pressure relief channel.
  • the battery cells arranged in the extension direction of the first sub-pressure relief channel can quickly discharge the released emissions of the battery cells into the annular channel through the corresponding second sub-pressure relief channel, and finally release them to the outside of the box through the second pressure relief mechanism, thereby reducing the risks of pressure buildup and excessive temperature inside the box, which is beneficial to improving the reliability of battery use.
  • the first sub-pressure relief channel and the second sub-pressure relief channel are perpendicular.
  • the first sub-pressure relief channel and the second sub-pressure relief channel are regularly distributed, which is convenient for processing and manufacturing.
  • the annular channel is provided with an annular member connected to the casing, the annular member is used to separate the annular channel into a first sub-annular channel and a second sub-annular channel, the second sub-annular channel is arranged around the first sub-annular channel; the annular member is provided with a second ventilated structure for connecting the first sub-annular channel and the second sub-annular channel, the second sub-annular channel is connected to the second pressure relief mechanism, and the first sub-annular channel is connected to the first sub-pressure relief channel.
  • the emissions released by the battery cells need to go through the first sub-annular channel and the second sub-annular channel, which can extend the emission path of the emissions and prolong the cooling time of the particulate matter in the emissions, which is beneficial to reduce the risk of excessive exhaust temperature of the battery and improve the reliability of the battery.
  • the second ventilable structure is a through hole.
  • the second ventilated structure is a through hole, which has a simple structure and is easy to process and manufacture.
  • the annular member includes at least three side wall portions connected end to end in sequence, and the side wall portion close to the second pressure relief mechanism is provided with a second ventilated structure.
  • the distance between the second ventilated structure and the second pressure relief mechanism is close, and the emissions through the second ventilated structure can quickly move to the second pressure relief mechanism and then be discharged through the second pressure relief mechanism, which is beneficial to reduce the risk of pressure build-up inside the box and is beneficial to improving the reliability of battery use.
  • the side wall portion close to the second pressure relief mechanism is the filter element, and the filter hole is the second ventilated structure.
  • a filter hole is directly opened on the side wall portion close to the second pressure relief mechanism, so that the emissions can be filtered and the first sub-annular channel and the second sub-annular channel can be connected.
  • the annular member and the filter member are integrated, and the structure is simple and convenient for processing and manufacturing.
  • the annular member includes at least three side wall portions connected end to end in sequence, and the side wall portion away from the second pressure relief mechanism is provided with a second ventilated structure.
  • the emissions passing through the second ventilated structure need to move a certain distance before they can flow to the second pressure relief mechanism and thus be discharged from the box. This can extend the emission path of the emissions, lengthen the cooling time of the particulate matter in the emissions, and reduce the outflow temperature of the particulate matter, which is beneficial to reducing the risk of excessive exhaust temperature of the battery and improving the reliability of battery use.
  • the side wall portion close to the second pressure relief mechanism is a first side wall portion, and at least one of a side wall portion adjacent to the first side wall portion and a side wall portion opposite to the first side wall portion is provided with a second ventilable structure.
  • the second ventilated structure is designed to be away from the second pressure relief mechanism, which can extend the discharge path of the emissions and prolong the cooling time of the particulate matter in the emissions, which is beneficial to reducing the risk of excessive exhaust temperature of the battery.
  • the second breathable structure is located in the middle of the corresponding side wall portion.
  • the second ventilated structure is located in the middle of the side wall portion, so that the distance between the battery cells located at both ends and the second ventilated structure is not too far, so that the emissions released by the battery cells located at the ends can also be quickly discharged, which is beneficial to improving the reliability of battery use.
  • the side wall portion away from the second pressure relief mechanism is the filter element, and the filter hole is the second ventilated structure.
  • a filter hole is directly opened on the side wall away from the second pressure relief mechanism, so that the emissions can be filtered and the first sub-annular channel and the second sub-annular channel can be connected.
  • the annular part and the filter part are integrated, and the structure is simple and easy to process and manufacture.
  • the filter element cover when the filter element is disposed on the housing, the filter element cover is disposed on the second ventilable structure.
  • the filter cover is arranged at the second ventilated structure, and its structure is simple and convenient to process and manufacture.
  • the filter element is located between the battery module and the second pressure relief mechanism; the filter element has a first filter portion and a second filter portion, each of the first filter portion and the second filter portion is provided with a plurality of filter holes, a first discharge path and a second discharge path are formed between the first pressure relief mechanism and the second pressure relief mechanism of the battery cell closest to the second pressure relief mechanism, the first discharge path passes through the filter holes of the first filter portion, and the second discharge path passes through the filter holes of the second filter portion; when the length of the first discharge path is greater than the length of the second discharge path, the aperture diameter of the filter holes of the first filter portion is greater than the aperture diameter of the filter holes of the second filter portion.
  • the aperture of the filter hole of the first filter part is larger than the aperture of the filter hole of the second filter part, so that the low-temperature small particles in the emissions flowing along the long discharge path will be directly discharged to the outside of the battery through the filter holes of the first filter part.
  • the filter holes of the first filter part will also block the large particles with higher temperatures in the emissions; and the large and small particles with high temperatures in the emissions flowing along the short discharge path will be blocked by the filter holes of the second filter part and will not be discharged to the outside of the battery, thereby reducing the risk of causing excessive exhaust temperature of the battery and improving the reliability of battery use.
  • the emissions can be quickly discharged from the battery, reducing the risk of pressure build-up inside the box.
  • the box body further includes a bottom plate, the partition is supported on the bottom plate by a spacing element, the battery module is located above the partition, and the first pressure relief mechanism is located at the bottom of the battery cell.
  • the first pressure relief mechanism is located at the bottom of the battery cell.
  • the battery module is separated from the first sub-pressure relief mechanism by a partition, so that the emissions released by the first pressure relief mechanism are difficult to contact the electrical components on the top of the battery cell, thereby reducing the risk of damage to the battery cell and helping to improve the reliability of battery use.
  • the separator is a thermal management component, and the thermal management component is used to exchange heat with the battery module.
  • the separator is directly a thermal management component, which does not require the addition of additional components, is conducive to reducing the number of battery components and facilitates processing and manufacturing.
  • an embodiment of the present application provides an electrical device, comprising a battery according to any of the above embodiments.
  • FIG1 is a schematic diagram of the structure of an electric device provided in one embodiment of the present application.
  • FIG. 2 is a schematic diagram of the structure of a battery provided in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of the structure of a battery cell provided in an embodiment of the present application.
  • FIG. 4 is an exploded schematic diagram of a battery provided in another embodiment of the present application.
  • FIG. 5 is a schematic diagram of a partial structure of a filter element of the battery shown in FIG. 4 from one viewing angle.
  • FIG. 6 is a schematic diagram of a partial structure of the filter element of the battery shown in FIG. 4 from another perspective.
  • FIG. 7 is a schematic structural diagram of the battery shown in FIG. 4 from one viewing angle.
  • FIG8 is a cross-sectional view along line A-A in FIG7.
  • FIG9 is a cross-sectional view along line B-B in FIG7.
  • FIG. 10 is a partial enlarged view of point C in FIG. 8 .
  • FIG. 11 is a partial enlarged view of point D in FIG. 8 .
  • FIG. 12 is a schematic structural diagram of the battery shown in FIG. 4 from another viewing angle.
  • FIG13 is a cross-sectional view along line E-E in FIG12.
  • FIG14 is a schematic diagram of the structure of a battery provided in yet another embodiment of the present application.
  • FIG15 is a cross-sectional view along the line F-F in FIG14.
  • FIG16 is a cross-sectional view along line G-G in FIG15.
  • FIG17 is a schematic diagram of the structure of a battery provided in yet another embodiment of the present application.
  • FIG18 is a cross-sectional view along line H-H in FIG17.
  • FIG19 is a partial enlarged view of point I in FIG18 .
  • FIG. 20 is a partial enlarged view of point J in FIG. 18 .
  • FIG. 21 is a partial enlarged view of point K in FIG. 18 .
  • FIG22 is a cross-sectional view of the battery shown in FIG17.
  • FIG23 is a schematic diagram of the structure of a battery provided in yet another embodiment of the present application.
  • Figure 24 is a cross-sectional view along the M-M line in Figure 23.
  • FIG25 is a cross-sectional view of the battery shown in FIG23.
  • FIG. 26 is a schematic diagram of the structures of various battery cells provided in an embodiment of the present application.
  • FIG27 is a schematic diagram of an exploded view of a battery provided in yet another embodiment of the present application.
  • FIG. 28 is a schematic diagram of the structure of the battery shown in FIG. 27 after the top cover is hidden.
  • FIG29 is a cross-sectional view of the battery shown in FIG27.
  • FIG30 is a schematic diagram of an exploded view of a battery provided in yet another embodiment of the present application.
  • FIG. 31 is a schematic diagram of the structure of the battery shown in FIG. 30 after the top cover is hidden.
  • FIG32 is a cross-sectional view of the battery shown in FIG30 .
  • FIG33 is a schematic diagram of the structure of a battery hidden behind a top cover provided in another embodiment of the present application.
  • FIG34 is a schematic diagram of the structure of a battery hidden behind a top cover provided in yet another embodiment of the present application.
  • FIG35 is a schematic diagram of an exploded view of a battery provided in yet another embodiment of the present application.
  • FIG. 36 is a schematic diagram of the structure of the battery shown in FIG. 35 after the top cover is hidden.
  • FIG37 is a cross-sectional view of the battery shown in FIG35.
  • FIG38 is a schematic diagram of an exploded view of a battery provided in yet another embodiment of the present application.
  • FIG39 is a cross-sectional view of the battery shown in FIG38.
  • FIG40 is a cross-sectional view of the battery shown in FIG38.
  • 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 the indicated technical features.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more, unless otherwise clearly and specifically 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.
  • 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.
  • a and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone.
  • the terms “one embodiment”, “some embodiments”, “example”, “specific example”, or “some examples” etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.
  • the schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.
  • those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two groups), and “multiple sheets” refers to more than two sheets (including two sheets). "At least one” means one or more than one, unless otherwise clearly and specifically defined.
  • the Z axis in the drawings represents the up-down direction
  • the positive direction of the Z axis represents the up direction
  • the negative direction of the Z axis represents the down direction
  • the Y axis in the drawings represents the front-back direction
  • the positive direction of the Y axis represents the back direction
  • the negative direction of the Y axis represents the front direction
  • the X-axis in the figure represents the left and right direction
  • the positive direction of the X-axis represents the right
  • the negative direction of the X-axis represents the left.
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery generally includes a box for encapsulating one or more battery cells.
  • the box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application.
  • the battery cells may be cylindrical, flat, rectangular or other shapes, etc., which are not limited in the embodiments of the present application. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, which are not limited in the embodiments of the present application.
  • a battery cell includes an electrode assembly and an electrolyte.
  • the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator.
  • a battery cell mainly works by the movement of metal ions between the positive electrode sheet and the negative electrode sheet.
  • the main safety hazards come from the charging and discharging process, as well as the appropriate ambient temperature design.
  • the protection measures include at least switching elements, selecting appropriate isolation film materials, and the first pressure relief mechanism.
  • the first pressure relief mechanism refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature or other conditions of the battery cell reaches a predetermined threshold.
  • the threshold design varies according to different design requirements. The threshold may depend on one or more materials of the positive electrode plate, negative electrode plate, electrolyte and isolation membrane in the battery cell.
  • the first pressure relief mechanism can take the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, and can specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature or other conditions of the battery cell reaches a predetermined threshold, the first pressure relief mechanism performs an action or the weak structure provided in the first pressure relief mechanism is destroyed, thereby forming a channel for the internal pressure or temperature to be released.
  • the "actuation" mentioned in the embodiments of the present application means that the first pressure relief mechanism is actuated or activated to a certain state, so that the internal pressure and temperature of the battery cell can be released.
  • the action produced by the first pressure relief mechanism may include but is not limited to: at least a part of the first pressure relief mechanism is ruptured, broken, melted, torn or opened, etc.
  • the first pressure relief mechanism When the first pressure relief mechanism is actuated, the internal emissions of the battery cell will be discharged outward from the actuated part as emissions. In this way, the pressure and temperature of the battery cell can be relieved under controllable pressure or temperature, thereby avoiding potential more serious accidents.
  • the first pressure relief mechanism When the first pressure relief mechanism is activated, the high-temperature and high-pressure substances inside the battery cell are discharged from the activated part as exhaust. In this way, the pressure and temperature of the battery cell can be relieved under controllable pressure or temperature, thereby avoiding potential more serious accidents.
  • the emissions from the battery cells mentioned in the embodiments of the present application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of the isolation membrane, high-temperature and high-pressure gases produced by the reaction, flames, etc.
  • the emissions released by the battery cells spread in the battery box.
  • the box is provided with a second pressure relief mechanism.
  • the emissions are discharged from the actuation part of the box to reduce the further deterioration of the battery thermal runaway.
  • the emissions ejected from the battery often carry high-temperature particles generated by the thermal runaway of the battery cells.
  • the high-temperature particles are ejected from the battery, and the exhaust temperature of the battery is too high, which can easily cause the deterioration of the external environment of the battery and seriously affect the reliability of the battery.
  • the operating principles of the first pressure relief mechanism and the second pressure relief mechanism are similar, which will not be repeated here.
  • the embodiment of the present application provides a battery. After thermal runaway occurs in the body, the first pressure relief mechanism is actuated, and the emissions generated by the battery cell are released into the pressure relief channel through the first pressure relief mechanism and move along the pressure relief channel to the second pressure relief mechanism. As the thermal runaway continues to intensify, the second pressure relief mechanism is actuated, and the emissions in the pressure relief channel are released to the outside of the box through the second pressure relief mechanism.
  • the filter holes on the filter element can block the high-temperature particulate matter in the emissions from passing through, thereby reducing the high-temperature particulate matter ejected from the battery, which is beneficial to reducing the risk of excessive exhaust temperature of the battery and improving the reliability of battery use.
  • the battery disclosed in the embodiments of the present application and the electric device using the battery as a power source may be, but not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc.
  • the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc.
  • the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.
  • FIG. 1 is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of the present application.
  • the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
  • a battery 1100 is provided inside the vehicle 1000, and the battery 1100 may be provided at the bottom, head or tail of the vehicle 1000.
  • the battery 1100 may be used to power the vehicle 1000, for example, the battery 1100 may be used as an operating power source for the vehicle 1000.
  • the vehicle 1000 may also include a controller 1200 and a motor 1300, and the controller 1200 is used to control the battery 1100 to power the motor 1300, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving.
  • the battery 1100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • the battery 1100 includes a box 10 and a battery module 20 , and the battery module 20 is contained in the box 10 .
  • the box 10 is used to provide a storage space for the battery cell 21 , and the box 10 can adopt a variety of structures.
  • the box 10 can include a first part 11 and a second part 12 , the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 21 .
  • the second part 12 can be a hollow structure with one end open, the first part 11 can be a plate-like structure, and the first part 11 covers the open side of the second part 12 , so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12.
  • the box 10 formed by the first part 11 and the second part 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.
  • the box body 10 may further include a top cover 13, a frame 14 and a bottom plate 15, wherein the top cover 13 and the bottom plate 15 are respectively mounted on the upper and lower sides of the frame 14, thereby defining an accommodation space for accommodating the battery cells.
  • the battery module 20 includes one or more battery cells 21 , wherein the multiple battery cells 21 may be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the multiple battery cells 21 may be connected in series or in parallel.
  • multiple battery cells 21 can be directly connected in series, in parallel, or in a hybrid connection, and then the battery module 20 composed of multiple battery cells 21 is accommodated in the box 10; of course, multiple battery modules 20 are connected in series, in parallel, or in a hybrid connection to form a whole, and are accommodated in the box 10.
  • the battery 1100 may also include other structures.
  • the battery 1100 may also include a busbar component for achieving electrical connection between multiple battery cells 21.
  • Each battery cell 21 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto.
  • the battery cell 21 may be cylindrical, flat, rectangular, or in other shapes.
  • FIG. 3 is a schematic diagram of the exploded structure of a battery cell 21 provided in some embodiments of the present application.
  • the battery cell 21 refers to the smallest unit that constitutes a battery.
  • the battery cell 21 includes a housing, an electrode assembly 213 and other functional components.
  • the housing includes an end cap 212 and a shell 211.
  • the end cap 212 is a component that covers the opening of the housing 211 to isolate the internal environment of the battery cell 21 from the external environment.
  • the shape of the end cap 212 can be adapted to the shape of the housing 211 to match the housing 211.
  • the end cap 212 can be made of a material with a certain hardness and strength (such as aluminum alloy). It is not easy to deform when squeezed and collided, so that the battery cell 21 can have a higher structural strength and the safety performance can also be improved.
  • Functional components such as electrode terminals 214 can be provided on the end cap 212. The electrode terminal 214 can be used to electrically connect with the electrode assembly 213 to output or input the electrical energy of the battery cell 21.
  • the end cap 212 can also be provided with a first pressure relief mechanism 215 for releasing the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold.
  • the material of the end cap 212 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose special restrictions on this.
  • an insulating member can also be provided on the inner side of the end cap 212, and the insulating member can be used to isolate the electrical connection components in the housing 211 from the end cap 212 to reduce the risk of short circuit.
  • the insulating member can be plastic, rubber, etc.
  • the shell 211 is a component used to cooperate with the end cap 212 to form the internal environment of the battery cell 21, wherein the formed internal environment can be used to accommodate the electrode assembly 213, the electrolyte and other components.
  • the shell 211 and the end cap 212 can be independent components, and an opening can be set on the shell 211, and the internal environment of the battery cell 21 is formed by covering the opening with the end cap 212 at the opening.
  • the end cap 212 and the shell 211 can also be integrated.
  • the end cap 212 and the shell 211 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 211, the end cap 212 covers the shell 211.
  • the shell 211 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. In one embodiment, the shape of the shell 211 can be determined according to the specific shape and size of the electrode assembly 213.
  • the shell 211 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.
  • the electrode assembly 213 is a component in the battery cell 21 where electrochemical reactions occur.
  • One or more electrode assemblies 213 may be included in the housing 211.
  • the electrode assembly 213 includes a positive electrode, a negative electrode, and a separator.
  • active ions such as lithium ions
  • the separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow active ions to pass through.
  • the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.
  • the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.
  • the separator is a separator.
  • the present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical stability and mechanical stability can be selected.
  • the electrode assembly 213 is a wound structure.
  • the positive electrode sheet and the negative electrode sheet are wound into a wound structure.
  • the electrode assembly 213 is a laminate structure.
  • a battery 1100 which includes a housing 10, a battery module 20 and a pressure relief channel 30.
  • the battery module 20 is located in the housing 10, and the battery module 20 includes at least one battery cell 21.
  • Each battery cell 21 is provided with a first pressure relief mechanism 215.
  • the housing 10 has a second pressure relief mechanism 16.
  • the pressure relief channel 30 connects the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of at least one battery cell 21.
  • the first pressure relief mechanism 215 is used to release the exhaust generated inside the battery cell 21 to the pressure relief channel 30 when actuated.
  • the pressure relief channel 30 is used to guide the exhaust to the second pressure relief mechanism 16.
  • the second pressure relief mechanism 16 is used to release the exhaust from the pressure relief channel 30 to the outside of the housing 10 when actuated.
  • At least one of the battery cell 21, the battery module 20, the housing 10 and the pressure relief channel 30 is provided with a filter 40.
  • the filter 40 is provided with a filter hole 401 for blocking particulate matter in the exhaust from passing through.
  • the first pressure relief mechanism 215 When activated, the first pressure relief mechanism 215 can release the emissions generated by thermal runaway of the battery cell 21 to the outside of the battery cell 21; as shown in Figure 3, under normal use of the battery cell 21, the first pressure relief mechanism 215 can be arranged on the top of the battery cell 21, that is, on the end cover 212 of the battery cell 21; the first pressure relief mechanism 215 can also be arranged on the side wall of the shell 211 of the battery cell 21, and the first pressure relief mechanism 215 can also be arranged at the bottom of the battery cell 21.
  • the second pressure relief mechanism 16 When the second pressure relief mechanism 16 is activated, it can release the exhaust gas from the battery cell 21 into the pressure relief channel 30. Placed outside the box body 10 , wherein the second pressure relief mechanism 16 can be arranged on the top cover 13 , the frame 14 or the bottom plate 15 of the box body 10 .
  • the pressure relief channel 30 may refer to a channel or space for the movement of the discharged matter when the discharged matter released after the first pressure relief mechanism 215 is actuated moves to the second pressure relief mechanism 16.
  • the pressure relief channel 30 is located in the housing 10, that is, the pressure relief channel 30 may be a part of the accommodation space formed by the housing 10, which may be in the same space as the battery cell 21, or may be two separate spaces from the space where the battery cell 21 is located; wherein the pressure relief channel 30 and the battery cell 21 are respectively in two separate spaces, so that the discharged matter can be separated from the battery cell 21, thereby improving the reliability of the battery 1100.
  • the pressure relief channel 30 connects the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of at least one battery cell 21. It can be understood that when the first pressure relief mechanism 215 and the second pressure relief mechanism 16 connected to the pressure relief channel 30 are actuated simultaneously, the pressure relief channel 30 can communicate with the corresponding first pressure relief mechanism 215 and the second pressure relief mechanism 16, so that the discharge released by the first pressure relief mechanism 215 can move to the second pressure relief mechanism 16 and can be discharged from the battery 1100 through the second pressure relief mechanism 16.
  • the pressure relief channel 30 connects the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of the battery cell 21; when the number of battery cells 21 is multiple, the number of battery cells 21 connected to the pressure relief channel 30 includes but is not limited to one, two, three or four.
  • the filter element 40 may refer to a component provided with filter holes 401 , and the filter holes 401 may be a hole structure capable of blocking particulate matter in the exhaust from passing through.
  • At least one of the battery cell 21, the battery module 20, the housing 10 and the pressure relief channel 30 is provided with a filter 40.
  • the filter 40 can be provided on any one of the battery cell 21, the battery module 20, the housing 10 and the pressure relief channel 30; the filter 40 can also be provided on any two of the battery cell 21, the battery module 20, the housing 10 and the pressure relief channel 30; the filter 40 can also be provided on any three of the battery cell 21, the battery module 20, the housing 10 and the pressure relief channel 30; the battery cell 21, the battery module 20, the housing 10 and the pressure relief channel 30 are all provided with a filter 40, wherein the filter 40 provided on the battery cell
  • the filter element 40 of the body 21 can block the particulate matter in the emissions released by the battery cells 21 from entering the pressure relief channel 30, the filter element 40 arranged in the battery module 20 can block the particulate matter in the emissions released by the battery cells 21 in the battery module 20 from entering the pressure relief channel 30 or moving to the second pressure relief mechanism 16, the filter element 40 arranged in the pressure relief channel 30 can block the particulate matter in
  • the first pressure relief mechanism 215 is actuated, and the emissions generated by the battery cell 21 are released into the pressure relief channel 30 through the first pressure relief mechanism 215 and move along the pressure relief channel 30 to the second pressure relief mechanism 16.
  • the second pressure relief mechanism 16 is actuated, and the emissions in the pressure relief channel 30 are released to the outside of the case 10 through the second pressure relief mechanism 16.
  • the filter holes 401 on the filter element 40 can block the high-temperature particulate matter in the emissions from passing through, thereby reducing the high-temperature particulate matter ejected from the battery 1100, which is beneficial to reducing the risk of excessive exhaust temperature of the battery 1100 and improving the reliability of the use of the battery 1100.
  • the filter element 40 when the filter element 40 is disposed on the battery cell 21 , the first pressure relief mechanism 215 and the filter element 40 are an integrated structure.
  • the first pressure relief mechanism 215 and the filter element 40 are integrated together to form an integral structure, wherein the first pressure relief mechanism 215 and the filter element 40 can be connected to form an integral structure by means of screw connection, clamping, welding, bonding, etc.
  • the first pressure relief mechanism 215 and the filter element 40 form an integral structure, and the integral structure can be installed together on the battery cell 21, which is convenient and simple to assemble.
  • the filter element 40 when the filter element 40 is disposed on the battery cell 21 , the filter element 40 is connected to the outer shell of the battery cell 21 .
  • the filter element 40 is fixedly connected to the housing 211 of the battery cell 21 , wherein the filter element 40 can be fixed to the housing 211 by means of screw connection, clamping, welding, bonding, etc.
  • the filter element 40 is directly connected to the housing 211, and the connection structure is simple and the assembly operation is simple.
  • the second pressure relief mechanism 16 and the filter element 40 are an integrated structure.
  • the second pressure relief mechanism 16 and the filter element 40 are integrated together to form an integral structure, wherein the second pressure relief mechanism 16 and the filter element 40 can be connected to form an integral structure by means of screw connection, clamping, welding, bonding, etc.
  • the second pressure relief mechanism 16 and the filter element 40 form an integral structure, and the integral structure can be installed on the box body 10, which is convenient and simple to assemble.
  • the filter element 40 is fixedly connected to the housing 10 , wherein the filter element 40 can be fixed to the housing 10 by means of screw connection, clamping, welding, bonding, etc.
  • the filter element 40 is directly connected to the box body 10, and the connection operation is simple and convenient to manufacture.
  • the side wall of the box body 10 is provided with filter holes 401 , and the portion of the side wall of the box body 10 where the filter holes 401 are disposed forms the filter element 40 .
  • the filter hole 401 is directly provided on the side wall of the box body 10 , so that the part of the side wall of the box body 10 provided with the filter hole 401 directly serves as the filter element 40 , wherein at least any one of the front, back, left, right, top and bottom side walls of the box body 10 is provided with the filter hole 401 .
  • the part of the side wall of the box body 10 with the filter hole 401 is directly used as the filter element 40, so there is no need to add additional filter components, which is conducive to simplifying the structure of the box body 10 and reducing the production cost.
  • the second pressure relief mechanism 16 when the filter element 40 is disposed in the box body 10 , the second pressure relief mechanism 16 is provided with a filter element 40 on the side facing the battery module 20 to prevent particulate matter released by the battery cell 21 from entering the second pressure relief mechanism 16 .
  • the filter element 40 is disposed on the side of the second pressure relief mechanism 16 facing the battery module 20. It can be understood that the filter element 40 is located inside the box body 10 and is not exposed to the box body 10. The filter element 40 has better reliability in use.
  • the particulate matter in the exhaust is first filtered out by the filter element 40 and then discharged out of the battery 1100 through the second pressure relief mechanism 16, thereby reducing the high-temperature particulate matter emitted by the battery 1100 and improving the reliability of the use of the battery 1100; in addition, the probability of the particulate matter contacting the external environment of the box 10 is small, and the risk of causing the exhaust temperature of the battery 1100 to be too high is small, which can better improve the reliability of the battery 1100.
  • a filter element 40 when the filter element 40 is disposed in the box body 10 , a filter element 40 is disposed on the side of the second pressure relief mechanism 16 facing away from the battery module 20 to block the passage of particulate matter released by the second pressure relief mechanism 16 .
  • the filter element 40 is disposed on the side of the second pressure relief mechanism 16 facing away from the battery module 20 . It is understandable that the filter element 40 is located on the side of the second pressure relief mechanism 16 exposed outside the box body 10 , that is, the filter element 40 is exposed outside the box body 10 .
  • the exhaust first passes through the second pressure relief mechanism 16 and then is filtered out of the particulate matter by the filter element 40 before being discharged to the outside of the battery 1100, thereby reducing the particulate matter emitted by the battery 1100 and improving the reliability of the use of the battery 1100.
  • the second pressure relief mechanism 16 when the filter element 40 is arranged in the box body 10, the second pressure relief mechanism 16 is provided with a filter element 40 on the side facing the battery module 20 to prevent particulate matter released by the battery cell 21 from entering the second pressure relief mechanism 16; the second pressure relief mechanism 16 is provided with a filter element 40 on the side facing away from the battery module 20 to prevent particulate matter released by the second pressure relief mechanism 16 from passing through.
  • the emissions are filtered through two filters 40, and the particle filtering effect is good, which is beneficial to reducing the particles emitted by the battery 1100 and improving the reliability of the use of the battery 1100.
  • the sum of the cross-sectional areas of all the filter holes 401 of the filter element 40 is the filtration area; when a filter element 40 is provided on the side of the second pressure relief mechanism 16 facing the battery module 20, the filter element 40 located on the side of the second pressure relief mechanism 16 facing the battery module 20 is a first filter element, and the filtration area of the first filter element is greater than the maximum pressure relief area of the second pressure relief mechanism 16; when a filter element 40 is provided on the side of the second pressure relief mechanism 16 facing away from the battery module 20, the filter element 40 located on the side of the second pressure relief mechanism 16 facing away from the battery module 20 is a second filter element, and the filtration area of the second filter element is less than the maximum pressure relief area of the second pressure relief mechanism 16.
  • the filtration area may refer to the sum of the cross-sectional areas of all the filter holes 401 on the filter element 40, that is, the total area on the filter element 40 through which emissions can pass, wherein the cross-sectional area refers to the area of a figure obtained by cutting the filter hole 401 with a plane perpendicular to the axis of the filter hole 401.
  • the first filter element may refer to the filter element 40 located on the side of the second pressure relief mechanism 16 facing the battery cell 21.
  • the emissions released by the battery cell 21 pass through the first filter element and then through the second pressure relief mechanism 16. That is, the first filter element and the second pressure relief mechanism 16 are arranged in sequence along the discharge path of the emissions.
  • the maximum pressure relief area of the second pressure relief mechanism 16 may refer to the maximum flow area of the exhaust passing through the second pressure relief mechanism 16 when the second pressure relief mechanism 16 is in a fully open state.
  • the second pressure relief mechanism 16 is an explosion-proof disc, and the housing 10 is usually provided with a pressure relief hole 141, which shields the pressure relief hole 141.
  • the area of the damaged region of the explosion-proof disc is smaller than the cross-sectional area of the pressure relief hole 141, the area of the damaged region of the explosion-proof disc is the maximum pressure relief area of the second pressure relief mechanism 16, or, when the area of the damaged region of the explosion-proof disc is larger than the cross-sectional area of the pressure relief hole 141, the cross-sectional area of the pressure relief hole 141 is the maximum pressure relief area of the second pressure relief mechanism 16.
  • the cross-sectional area of the pressure relief hole 141 is the maximum pressure relief area of the second pressure relief mechanism 16.
  • the second pressure relief mechanism 16 is an explosion-proof valve, and the maximum pressure relief area in the technical specification of the explosion-proof valve is the maximum pressure relief area of the second pressure relief mechanism 16.
  • the maximum pressure relief area of the second pressure relief mechanism 16 may refer to the maximum flow area of the discharge flowing through the explosion-proof valve when the explosion-proof valve is in a fully open state.
  • the second filter element may refer to the filter element 40 located on the side of the second pressure relief mechanism 16 facing away from the battery cell 21.
  • the emissions released by the battery cell 21 pass through the second pressure relief mechanism 16 and then are filtered by the second filter element before being discharged. That is, the second pressure relief mechanism 16 and the second filter element are arranged in sequence along the discharge path of the emissions.
  • the filtering area of the first filter element is greater than the maximum pressure relief area of the second pressure relief mechanism 16. It can be understood that as the emissions flow through the first filter element and the second pressure relief mechanism 16 in sequence, the flow area of the emissions decreases in sequence, thereby achieving a step-by-step pressure relief effect, which is beneficial to improving the emission effect of the emissions and improving the reliability of the battery 1100.
  • the filtering area of the second filter element is smaller than the maximum pressure relief area of the second pressure relief mechanism 16. It can be understood that as the emissions flow through the second pressure relief mechanism 16 and the second filter element in sequence, the flow area of the emissions decreases in sequence, thereby achieving a step-by-step pressure relief effect, which is beneficial to improving the emission effect of the emissions and improving the reliability of the battery 1100.
  • the flow area of the exhaust is reduced along the exhaust path, which can achieve a step-by-step pressure relief effect, which is beneficial to improving the exhaust effect of the exhaust and improving the reliability of the battery 1100; in addition, the gradual reduction of the flow area is also beneficial to reducing design redundancy and reducing manufacturing costs.
  • first filter element when a first filter element is provided on the side of the second pressure relief mechanism 16 facing the battery module 20, there are multiple first filter elements, and the multiple first filter elements are arranged in sequence along the discharge path of the emissions released from the battery cell 21, and the filtering areas of the multiple first filter elements decrease along the discharge path of the emissions; when a second filter element is provided on the side of the second pressure relief mechanism 16 facing away from the pressure relief channel 30, there are multiple second filter elements, and the multiple second filter elements are arranged in sequence along the discharge path of the emissions released by the second pressure relief mechanism 16, and the filtering areas of the multiple second filter elements decrease along the discharge path of the emissions.
  • the second pressure relief mechanism 16 is provided with a plurality of first filters on the side of the battery module 20, and the plurality of first filters are arranged in sequence along the discharge path of the emission, wherein the discharge path may refer to the flow path of the emission in the pressure relief channel 30, so that the emission released by the battery cell 21 can pass through each first filter in sequence and then be discharged through the second pressure relief mechanism 16, so that the emission is discharged after passing through multiple layers of filtration, which is conducive to reducing the number of particulate matter discharged by the battery 1100 and improving the reliability of the battery 1100; in addition, the filter area of the plurality of first filters decreases along the discharge path of the emission, and it can be understood that the filter area of the first filter can be smaller and smaller along the discharge path of the emission, or it can be reduced in a step-by-step manner, that is, there is a situation where the filter area of two adjacent first filters is the same.
  • the emission After the emission passes through the first filter with a smaller and smaller filter area, it flows to the second pressure relief mechanism 16, so that the flow area of the emission is smaller and smaller, and the multi-stage pressure relief of the emission can be achieved, and the emission effect of the emission is good, which is conducive to improving the reliability of the battery 1100.
  • the second pressure relief mechanism 16 is provided with a plurality of second filters on the side facing away from the battery module 20.
  • the plurality of second filters are arranged in sequence along the discharge path of the emission, so that the emission released by the second pressure relief mechanism 16 passes through each first filter in sequence and is discharged from the battery 1100. In this way, the emission is discharged after being filtered through multiple layers, which is beneficial to reduce the number of particulate matter discharged from the battery 1100 and improve the reliability of the battery 1100.
  • the filter area of the plurality of second filters decreases along the discharge path of the emission.
  • the filter area of the second filter can be smaller and smaller along the discharge path of the emission, or it can be reduced in a step-by-step manner, that is, there is a situation where the filter area of two adjacent second filters is the same.
  • the emission is discharged from the battery 1100 after passing through the second filter with a smaller and smaller filter area. In this way, the flow area of the emission is smaller and smaller, which can realize multi-stage pressure relief of the emission, and the emission effect is good, which is beneficial to improve the reliability of the battery 1100.
  • multi-stage filtration of emissions can be achieved, which is beneficial to reducing the amount of particulate matter emitted.
  • multi-stage pressure relief of emissions can be achieved, and the emission effect of emissions is good, which is beneficial to improving the reliability of battery 1100.
  • the apertures of the filter holes 401 of the plurality of first filters decrease along the discharge path of the emissions; when a plurality of second filters are provided on the side of the second pressure relief mechanism 16 facing away from the pressure relief channel 30, the apertures of the filter holes 401 of the plurality of second filters decrease along the discharge path of the emissions.
  • the aperture of the filter hole 401 may refer to the radial dimension of the filter hole 401 .
  • the filter hole 401 is a circular hole, and the aperture refers to the diameter of the circular hole.
  • the apertures of the filter holes 401 of the multiple first filter elements decrease along the emission path of the emissions. It can be understood that the emissions first pass through the first filter element with a larger aperture and then pass through the first filter element with a smaller aperture. In this way, large particles in the emissions can be filtered out first, and then small particles in the emissions can be filtered out.
  • Such step-by-step filtration is conducive to reducing the risk of clogging of the filter element 40 and reducing the risk of poor pressure relief, which is conducive to improving the reliability of the battery 1100.
  • the apertures of the filter holes 401 of the plurality of second filter elements 40 decrease along the discharge path of the emission. It can be understood that the emission first passes through the second filter element 40 with a larger aperture and then passes through the second filter element 40 with a smaller aperture. The large particles in the waste are filtered out, and then the small particles in the exhaust are filtered out.
  • Such step-by-step filtering is beneficial to reducing the probability of clogging of the filter element 40, reducing the risk of poor pressure relief, and is beneficial to improving the reliability of the battery 1100.
  • the filter element 40 and the second pressure relief mechanism 16 are spaced apart from each other.
  • the filter element 40 is spaced apart from the second pressure relief mechanism 16. It is understandable that there is a certain space between the second pressure relief mechanism 16 and the filter element 40, which can be used to provide an action space for the actuation of the second pressure relief mechanism 16 to reduce the risk of interference.
  • the size of the space can be set according to the action space of the second pressure relief mechanism 16, and is not limited here.
  • the filter element 40 in combination with Figures 5 and 6, includes a plate portion 41 and an annular wall portion 42 arranged around the plate portion 41, one end of the annular wall portion 42 is connected to the plate portion 41, and the other end of the annular wall portion 42 is connected to the box body 10, the annular wall portion 42 is arranged around the second pressure relief mechanism 16, and at least one of the annular wall portion 42 and the plate portion 41 is provided with a filter hole 401.
  • the filter element 40 is in a square cylinder shape
  • the plate portion 41 may refer to the cylinder bottom portion of the filter element 40
  • the annular wall portion 42 may refer to the cylinder side wall portion 72 of the filter element 40, wherein the annular wall portion 42 may have a variety of shapes, such as circular, square, elliptical, etc.
  • the annular wall portion 42 is disposed around the second pressure relief mechanism 16, so that the filter element 40 is covered on the second pressure relief mechanism 16, thereby filtering out particulate matter in the emissions.
  • At least one of the annular wall portion 42 and the plate portion 41 is provided with a filter hole 401. It can be understood that the annular wall portion 42 is provided with a filter hole 401, or the plate portion 41 is provided with a filter hole 401, or both the annular wall portion 42 and the plate portion 41 are provided with a filter hole 401, so that particulate matter in the emissions is blocked from passing through the filter holes 401, thereby achieving filtration.
  • the filter element 40 has a simple structure and is easy to process and manufacture.
  • the filter element 40 has a first filter portion 43 and a second filter portion 44, and the first filter portion 43 and the second filter portion 44 are both provided with a plurality of filter holes 401.
  • a first discharge path N' and a second discharge path N are formed between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of at least one battery cell 21.
  • the first discharge path N' passes through the filter holes 401 of the first filter portion 43, and the second discharge path N passes through the filter holes 401 of the second filter portion 44.
  • the aperture of the filter holes 401 of the first filter portion 43 is greater than the aperture of the filter holes 401 of the second filter portion 44.
  • the filter element 40 is provided with a plurality of filter holes 401, and the apertures of the plurality of filter holes 401 are different.
  • the area where the filter holes 401 with large apertures are located may be the first filter portion 43, and the area where the filter holes 401 with small apertures are located may be the second filter portion 44.
  • the emissions will have multiple emission paths to flow to the second pressure relief mechanism 16, wherein the emission path flowing through the filter holes 401 of the first filter portion 43 is the first emission path N', and the emission path flowing through the second filter portion 44 is the second emission path N, and the length of the first emission path N' is greater than
  • the length of the second emission path N is such that the emission flowing through the first emission path N' has a long flow time, the small particles in the emission have a long cooling time, the cooling effect is good, the particle outlet temperature is low, and it is not easy for the environment to deteriorate when discharged from the battery 1100; similarly, the emission flowing through the second emission path N has a short flow time, the small particles in the emission have a short cooling time, the particle outlet temperature is high, and it is easy to cause environmental deterioration when discharged from the battery 1100; in addition, for large particles in the emission, the temperature of the large particles may not be significantly reduced after cooling down through a longer emission path compared to small particles, and the large particles discharged to the
  • the aperture of the filter hole 401 of the first filter part 43 is larger than the aperture of the filter hole 401 of the second filter part 44, so that the low-temperature small particles in the exhaust flowing along the long exhaust path will be directly discharged to the outside of the battery 1100 through the filter hole 401 of the first filter part 43.
  • the filter hole 401 of the first filter part 43 will also Large particles with higher temperatures in the exhaust are blocked; and both large and small particles with high temperatures in the exhaust flowing along the short exhaust path are blocked by the filter holes 401 of the second filter unit 44 and will not be discharged outside the battery 1100, thereby reducing the risk of causing the exhaust temperature of the battery 1100 to be too high and improving the reliability of the battery 1100.
  • the exhaust can be quickly discharged from the battery 1100, reducing the risk of pressure build-up inside the box 10.
  • Any two filter holes 401 have the same aperture. It can be understood that all filter holes 401 have the same aperture.
  • the apertures of all the filter holes 401 are the same, the structure of the filter element 40 is simple, and it can be easily processed and manufactured.
  • FIG. 24 there are multiple filter holes 401 , and at least two filter holes 401 have different apertures.
  • At least two filter holes 401 have different apertures. It is understandable that the apertures of the filter holes 401 vary in size and are not all the same.
  • the pore size of the filter hole 401 can be flexibly designed to meet the emission requirements of emissions, thereby improving the reliability of the battery 1100.
  • the pressure relief channel 30 also includes a first sub-pressure relief channel 31 for connecting to the second pressure relief mechanism 16, and the battery 1100 also includes a partition 50, and the partition 50 is used to separate the battery module 20 from the first sub-pressure relief channel 31.
  • the partition 50 is provided with a plurality of first ventilated structures 51, and each first ventilated structure 51 is connected to the first pressure relief mechanism 215 and the first sub-pressure relief channel 31 of at least one battery cell 21.
  • the first sub-pressure relief channel 31 may refer to a channel that can be connected to the second pressure relief mechanism 16 . After the exhaust released by the battery cell 21 enters the first sub-pressure relief channel 31 , it can move along the first sub-pressure relief mechanism to the second pressure relief mechanism 16 .
  • the separator 50 may refer to a component that can separate the battery module 20 from the first sub-pressure relief channel 31.
  • the separator 50 may be a partition or other structure that can separate the battery module 20 from the first sub-pressure relief channel 31.
  • the first ventilable structure 51 may refer to a ventilating structure that can connect the first sub-pressure relief channel 31 and the first pressure relief mechanism 215, and the emissions released by the first pressure relief mechanism 215 can enter the first sub-pressure relief channel 31 through the first ventilable structure 51.
  • the first ventilable structure 51 may be a through hole, a vent valve, etc. However, it is not limited thereto.
  • the first ventilable structure 51 may be a weak area provided on the partition 50. When the first pressure relief mechanism 215 is actuated, the weak area may be destroyed so that the first pressure relief mechanism 215 is connected to the first sub-pressure relief channel 31.
  • Each first ventilated structure 51 is connected to the first pressure relief mechanism 215 and the first sub-pressure relief channel 31 of at least one battery cell 21; it can be understood that when the number of battery cells 21 is one, the first ventilated structure 51 is connected to the first pressure relief mechanism 215 and the first sub-pressure relief channel 31 of the battery cell 21; when the number of battery cells 21 is multiple, the number of battery cells 21 connected to the first ventilated structure 51 includes but is not limited to one, two, three or four.
  • the emissions released by the first pressure relief mechanism 215 of the battery cell 21 enter the first pressure relief channel 30 through the first ventilated structure 51, and the first pressure relief channel 30 is separated from the battery module 20 by the partition 50. This can reduce the risk of contact between the emissions in the first pressure relief channel 30 and other battery cells 21 in the battery module 20, reduce the risk of thermal runaway spreading, and help improve the reliability of the battery 1100.
  • the pressure relief channel 30 includes at least two first sub-pressure relief channels 31 , each first sub-pressure relief channel 31 is connected to a first ventilated structure 51 corresponding to a different battery cell 21 , and the first sub-pressure relief channels 31 are separated by spacer elements 60 .
  • the number of the first sub-pressure relief channels 31 is not limited to two, three, four or five, each of which is connected to the first pressure relief mechanism 215 of a different battery cell 21, so that different battery cells 21 can be connected to the second pressure relief mechanism 16 through different first sub-pressure relief channels 31; the spacing element 60 may refer to the spacing element 60 located between two adjacent first sub-pressure relief channels.
  • a component is provided between the pressure relief channels 31 and separates two adjacent first sub-pressure relief channels 31 , so that the two adjacent first sub-pressure relief channels 31 are two independent channels.
  • the emissions released by the battery cell 21 enter the first sub-pressure relief channel 31 connected to the battery cell 21, and the first sub-pressure relief channels 31 are separated by the spacer elements 60, so that the emissions will not directly enter other first sub-pressure relief channels 31, which is beneficial to reduce the risk of thermal runaway spreading.
  • the pressure relief channel 30 also includes a connecting channel 32.
  • the wall surface of the partition 50 and the inner wall surface of the box body 10 are arranged to form the connecting channel 32.
  • Each first sub-pressure relief channel 31 is connected to the second pressure relief mechanism 16 through the connecting channel 32.
  • the connecting channel 32 may refer to a gap space between the wall surface of the partition 50 and the inner wall surface of the box body 10, and the gap space can connect each first sub-pressure relief channel 31 and the second pressure relief mechanism 16, so that the exhaust flowing out of each first sub-pressure relief channel 31 can move to the second pressure relief mechanism 16 through the connecting channel 32, thereby realizing the pressure relief and discharge of the battery 1100.
  • the connecting channel is formed by the wall surface of the partition 50 and the inner wall surface of the box body 10 to form a connecting channel 32, which has a simple structure and is convenient for processing and manufacturing.
  • the battery module 20 includes at least one column of battery cells 21, each column of battery cells 21 includes at least one battery cell 21, and each column of battery cells 21 is correspondingly provided with at least one first sub-pressure relief channel 31, and each first sub-pressure relief channel 31 extends along the arrangement direction of the corresponding column of battery cells 21; each first ventilated structure 51 corresponding to each column of battery cells 21 is connected to the corresponding first sub-pressure relief channel 31.
  • the battery cells 21 in the battery module 20 are arranged in a matrix, and the battery module 20 includes at least one column of battery cells 21, that is, the number of columns of battery cells 21 in the battery module 20 includes but is not limited to one, two, three, four or five; the number of first sub-pressure relief channels 31 corresponding to each column of battery cells 21 can be one, two, three, four or five, and the first pressure relief mechanism 215 of each column of battery cells 21 can be connected to the corresponding first sub-pressure relief channel 31, so that when the battery cells 21 are thermally runaway, the emissions released will enter through the first ventilated structure 51.
  • the number of columns of battery cells 21 is the same as the number of first sub-pressure relief channels 31, and each column of first pressure relief mechanisms 215 corresponds to a first sub-pressure relief channel 31, and the first sub-pressure relief channel 31 extends along the arrangement direction of the battery cells 21 in the corresponding column and is connected to the first pressure relief mechanism 215 of each battery cell 21 in the corresponding column, so that the emissions released by thermal runaway of the battery cells 21 will enter the corresponding first sub-pressure relief channel 31 and be discharged.
  • the second pressure relief mechanism 16 is located on the side of the end of the battery module 20 along the extension direction (X direction) of the first sub-pressure relief channel 31 .
  • the second pressure relief mechanism 16 is installed on the box body 10 and is located on the side of the end of the battery module 20 along the extension direction (X direction) of the first sub-pressure relief channel 31, that is, the second pressure relief mechanism 16 is located on the side of the end outlet of the first sub-pressure relief channel 31, so that the emissions in the first sub-pressure relief channel 31 can be discharged from the end opening of the first sub-pressure relief channel 31 and then directly discharged from the second pressure relief mechanism 16 outside the battery 1100.
  • the exhaust in the first sub-pressure relief channel 31 can be quickly discharged to the second pressure relief mechanism 16, and the battery 1100 has a good pressure relief and exhaust effect.
  • the communication channel 32 is an annular channel 33 , and the annular channel 33 is arranged around the partition 50 .
  • the communication channel 32 is annular and is disposed around the partition 50 .
  • the exhaust discharged from the first sub-pressure relief channel 31 will enter the annular channel 33 and flow along the annular channel 33, which can extend the exhaust path of the exhaust, thereby extending the particle reduction time in the exhaust.
  • the temperature is kept high for a long time, and the risk of particulate matter being discharged from the battery 1100 causing the exhaust temperature of the battery 1100 to be too high is small.
  • end plates 22 are provided at both ends of at least one column of battery cells 21, and the end plates 22 are inserted into the annular channel 33 and connected to the inner wall surface of the box body 10;
  • the pressure relief channel 30 also includes a second sub-pressure relief channel 34, which intersects with the first sub-pressure relief channel 31, and the second sub-pressure relief channel 34 is used to connect the corresponding first sub-pressure relief channel 31 and the annular channel 33.
  • the end plate 22 may refer to a component used to fix the corresponding column of battery cells 21 and located at the end of the corresponding column of battery cells 21.
  • the end plate 22 and the battery cells 21 may be connected by screwing, clamping or bonding.
  • the end plate 22 is inserted into the annular channel 33 and is sealed with the inner wall of the box body 10.
  • a sealing structure can be formed between the end plate 22 and the inner wall of the box body 10, and the end plate 22 and the wall of the box body 10 can be sealed by welding, sealant, sealing ring and other sealing forms; the sealing structure separates the first sub-pressure relief channel 31 from the second pressure relief mechanism 16, so that the discharge in the first sub-pressure relief channel 31 cannot move directly to the second pressure relief mechanism 16; and the pressure relief channel 30 also includes a second sub-pressure relief channel 34, and the second sub-pressure relief channel 34 can refer to a channel intersecting with the first sub-pressure relief channel 31, so that the second sub-pressure relief channel 34 can extend to the side of the first sub-pressure relief channel 31, thereby connecting the first sub-pressure relief mechanism with the annular channel 33, so that the discharge in the first sub-pressure relief channel 31 will flow into the annular channel 33 through the second sub-pressure relief channel 34, and finally flow to the second pressure relief mechanism 16, thereby being discharge
  • the emissions released by the battery cell 21 need to flow through the first sub-pressure relief channel 31, the second sub-pressure relief channel 34 and the annular channel 33 to the second pressure relief mechanism 16, and finally be discharged from the battery 1100.
  • This can extend the emission path of the emissions, and the cooling time of the particulate matter in the emissions is long, which is beneficial to reduce the risk of excessive exhaust temperature of the battery 1100.
  • end plates 22 are provided at both ends of each column of battery cells 21 , and each first sub-pressure relief channel 31 is connected to the second sub-pressure relief channel 34 .
  • each column of battery cells 21 are inserted into the annular channel 33 and sealed with the inner wall surface of the box body 10, so that the end plates 22 are connected to the inner wall surface of the box body 10 and form a sealing structure, so that the emissions discharged from each first sub-pressure relief channel 31 can be discharged to the annular channel 33 through the second sub-pressure relief channel 34.
  • at least part of the end plates 22 located at the same end can be connected into an integral structure by bolt connection, bonding, clamping, riveting, welding, integrated molding, etc., but not limited to, so that the battery cells 21 in the battery module 20 are more tightly connected.
  • integrated molding refers to the use of extrusion, injection molding, die casting and other integrated processes to form a molding.
  • the released emissions all flow into the annular channel 33 through the corresponding first sub-pressure relief channel 31 and second sub-pressure relief channel 34, then flow to the second pressure relief mechanism 16 through the annular channel 33, and are then released to the outside of the battery 1100 through the second pressure relief mechanism 16, which helps to improve the reliability of the battery 1100.
  • the pressure relief channel 30 includes a plurality of second sub-pressure relief channels 34 , and the second sub-pressure relief channels 34 are separated by spacer elements 60 .
  • second sub-pressure relief channels 34 it can be understood that the number of the second sub-pressure relief channels 34 includes but is not limited to two, three or four.
  • Two adjacent second sub-pressure relief mechanisms are separated by a spacing element 60, it can be understood that the two adjacent second sub-pressure relief channels 34 are not directly connected; in addition, the spacing element 60 simultaneously separates the two adjacent first sub-pressure relief channels 31 and the two adjacent second sub-pressure relief channels 34, and the entire battery 1100 has a good compact structure.
  • the emissions in the first sub-pressure relief mechanism can be discharged through the multiple second sub-pressure relief channels 34, which is beneficial to the rapid discharge of emissions, reduces the risks of pressure buildup and excessive temperature inside the box 10, and improves the reliability of the battery 1100.
  • a plurality of second sub-pressure relief channels 34 are arranged at intervals along the extension direction (X direction) of the first sub-pressure relief channel 31 .
  • extension direction of the first sub-pressure relief channel 31 may refer to the arrangement direction (X direction) of the battery cells 21 in a column of battery cells 21 .
  • the battery cells 21 arranged in the extension direction (X direction) of the first sub-pressure relief channel 31 can quickly discharge the released emissions of the battery cells 21 into the corresponding second sub-pressure relief channel 34.
  • the pressure in the annular channel 33 is finally released to the outside of the box body 10 through the second pressure relief mechanism 16, thereby reducing the risks of pressure buildup and excessive temperature inside the box body 10, which is beneficial to improving the reliability of the battery 1100.
  • the first sub-pressure relief channel 31 and the second sub-pressure relief channel 34 are perpendicular.
  • the first sub-pressure relief channel 31 and the second sub-pressure relief channel 34 are perpendicular. It can be understood that the first sub-pressure relief channel 31 and the second sub-pressure relief channel 34 are arranged vertically and horizontally; for example, the spacing elements 60 are arranged in a matrix, and the first sub-pressure relief channel 31 is formed between two adjacent columns of spacing elements 60, and the second sub-pressure relief channel 34 is formed between two adjacent rows of spacing elements 60.
  • the first sub-pressure relief channel 31 and the second sub-pressure relief channel 34 are regularly distributed, which is convenient for processing and manufacturing.
  • the annular channel 33 is provided with an annular member 70 connected to the housing 10, and the annular member 70 is used to separate the annular channel 33 into a first sub-annular channel 331 and a second sub-annular channel 332, and the second sub-annular channel 332 is arranged around the first sub-annular channel 331;
  • the annular member 70 is provided with a second ventilated structure 71 for connecting the first sub-annular channel 331 and the second sub-annular channel 332, the second sub-annular channel 332 is connected to the second pressure relief mechanism 16, and the first sub-annular channel 331 is connected to the first sub-pressure relief channel 31.
  • the annular member 70 may refer to an annular component located in the annular channel 33 and extending along the circumference of the annular channel 33, and the annular member 70 is connected to the housing 10, and the housing 10 serves as a mounting base for the annular member 70; at the same time, the annular member 70 can separate the annular channel 33 into a first sub-annular channel 331 and a second sub-annular channel 332, wherein the first sub-annular channel 331 is located inside the second sub-annular channel 332, that is, the second sub-annular channel 332 is arranged around the first sub-annular channel 331.
  • the shape of the annular member 70 is adapted to the shape of the annular channel 33; the shape of the annular member 70 may be various, such as circular, triangular, elliptical, quadrilateral, etc.
  • the second ventilable structure 71 may refer to a structure capable of connecting the first sub-annular channel 331 and the second annular sub-channel, wherein the second ventilable structure 71 may be a through hole, a vent valve, a pressure relief valve or the like.
  • the second sub-annular channel 332 is connected to the second pressure relief mechanism 16, and the first sub-annular channel 331 is connected to the first sub-pressure relief channel 31. It can be understood that when the second pressure relief mechanism 16 is actuated, the emissions released by the battery cell 21 first enter the first sub-annular channel 331, and then enter the second sub-annular channel 332 through the second ventilated structure 71, and finally are released to the outside of the box body 10 through the second pressure relief mechanism 16.
  • the emissions released by the battery cell 21 need to go through the first sub-annular channel 331 and the second sub-annular channel 332, which can extend the emission path of the emissions and prolong the cooling time of the particulate matter in the emissions, thereby reducing the risk of excessive exhaust temperature of the battery 1100 and improving the reliability of the battery 1100.
  • the second ventilable structure 71 is a through hole.
  • the through hole may refer to a hole structure penetrating the annular member 70 .
  • the second ventilated structure 71 is a through hole, which has a simple structure and is easy to process and manufacture.
  • the annular member 70 includes at least three side wall portions 72 connected end to end in sequence, and the side wall portion 72 close to the second pressure relief mechanism 16 is provided with a second ventilated structure 71 .
  • the annular member 70 can be divided into multiple sections along its circumference, and the side wall portion 72 can refer to a section of the annular member 70 .
  • the annular member 70 is rectangular, and the side wall portion 72 refers to one side of the annular member 70 .
  • the side wall portion 72 close to the second pressure relief mechanism 16 may refer to the side wall portion 72 that is closest to the second pressure relief mechanism 16 .
  • the distance between the second ventilated structure 71 and the second pressure relief mechanism 16 is close, and the emissions from the second ventilated structure 71 can quickly move to the second pressure relief mechanism 16 and then be discharged through the second pressure relief mechanism 16, which is beneficial to reducing the risk of pressure build-up inside the box body 10 and improving the reliability of the battery 1100.
  • a filter hole 401 is directly opened on the side wall portion 72 close to the second pressure relief mechanism 16, so that the filtering of emissions can be achieved, and the connection between the first sub-annular channel 331 and the second sub-annular channel 332 can be achieved.
  • the annular member 70 and the filter member 40 are integrated, and the structure is simple and convenient for processing and manufacturing.
  • the annular member 70 includes at least three The side wall portion 72 connected to the second pressure relief mechanism 16 is provided with a second ventilable structure 71 .
  • the side wall portion 72 far from the second pressure relief mechanism 16 may refer to the side wall portion 72 excluding the side wall portion 72 closest to the second pressure relief mechanism 16 .
  • the emissions passing through the second ventilated structure 71 need to move a certain distance before flowing to the second pressure relief mechanism 16, and thus discharged from the box body 10. This can extend the emission path of the emissions, and the cooling time of the particulate matter in the emissions is long, which is beneficial to reducing the risk of excessive exhaust temperature of the battery 1100 and improving the reliability of the battery 1100.
  • the side wall portion 72 close to the second pressure relief mechanism 16 is a first side wall portion 73, and at least one of the side wall portion 72 adjacent to the first side wall portion 73 and the side wall portion 72 opposite to the first side wall portion 73 is provided with a second ventilated structure 71.
  • the first side wall portion 73 may refer to the side wall portion 72 closest to the second pressure relief mechanism 16 .
  • the side wall portion 72 adjacent to or opposite to the first side wall portion 73 may be referred to as a side wall portion 72 away from the second pressure relief mechanism 16 .
  • At least one of the side wall portion 72 adjacent to the first side wall portion 73 and the side wall portion 72 opposite to the first side wall portion 73 is provided with a second breathable structure 71. It can be understood that the side wall portion 72 adjacent to the first side wall portion 73 is provided with the second breathable structure 71, or the side wall portion 72 opposite to the first side wall portion 73 is provided with the second breathable structure 71, or the side wall portion 72 adjacent to the first side wall portion 73 and the side wall portion 72 opposite to the first side wall portion 73 are both provided with the second breathable structure 71.
  • the second ventilated structure 71 is designed to be far away from the second pressure relief mechanism 16, which can extend the discharge path of the exhaust and prolong the cooling time of the particulate matter in the exhaust, which is beneficial to reducing the risk of excessive exhaust temperature of the battery 1100.
  • the second ventilated structure 71 is located in the middle of the corresponding side wall portion 72 .
  • the second ventilable structure 71 is located in the middle of the corresponding side wall portion 72 . It can be understood that the second ventilable structure 71 is located in the middle of the corresponding side wall portion 72 .
  • the second ventilated structure 71 is located in the middle of the side wall portion 72, so that the distance between the battery cells 21 located at both ends and the second ventilated structure 71 is not too far, so that the emissions released by the battery cells 21 located at the ends can also be quickly discharged, which is beneficial to improving the reliability of the battery 1100.
  • the filter element 40 when the filter element 40 is disposed in the box body 10 , the side wall portion 72 away from the second pressure relief mechanism 16 is the filter element 40 , and the filter hole 401 is the second ventilated structure 71 .
  • a filter hole 401 is directly opened in the side wall portion 72 away from the second pressure relief mechanism 16, so that the emission can be filtered and the connection between the first sub-annular channel 331 and the second sub-annular channel 332 can be achieved.
  • the annular member 70 and the filter member 40 are integrated, and the structure is simple and convenient for processing and manufacturing.
  • FIGS. 18 to 21 when the filter element 40 is disposed in the housing 10 , the filter element 40 is covered on the second ventilated structure 71 .
  • the filter element 40 is covered on the second ventilated structure 71. It can be understood that the filter element 40 can cover the second ventilated structure 71, wherein the filter element 40 is located on the side of the second ventilated structure 71 facing the first sub-annular channel 331, so that the discharge of the first sub-annular channel 331 is first filtered by the filter element 40, and then enters the second sub-annular channel 332 through the second ventilated structure 71; or, the filter element 40 is located on the side of the second ventilated structure 71 facing away from the first sub-annular channel 331, so that the discharge of the first sub-annular channel 331 is first filtered by the second ventilated structure 71 and then by the filter element 40 before entering the second sub-annular channel 332; or, the second ventilated structure 71 is provided with filter elements 40 on both the side facing the first sub-annular channel 331 and the side facing away from the first sub-annular channel 331, so that double filtration can be achieved, the
  • the filter element 40 is covered on the second ventilated structure 71, and its structure is simple and convenient to process and manufacture.
  • the filter element 40 is located between the battery module 20 and the second pressure relief mechanism 16 ; the filter element 40 has a first filter portion 43 and a second filter portion 44 , and the first filter portion 43 and the second filter portion 44 are
  • the filter parts 44 are provided with a plurality of filter holes 401, and a first discharge path N' and a second discharge path N are formed between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of the battery cell 21 closest to the second pressure relief mechanism 16.
  • the first discharge path N' passes through the filter holes 401 of the first filter part 43, and the second discharge path N passes through the filter holes 401 of the second filter part 44.
  • the aperture of the filter holes 401 of the first filter part 43 is greater than the aperture of the filter holes 401 of the second filter part 44.
  • the battery cell 21 closest to the second pressure relief mechanism 16 may refer to the battery cell 21 close to the second pressure relief mechanism 16 and located at the end of the battery module 20 .
  • the filter 40 is located between the battery module 20 and the second pressure relief mechanism 16. It can be understood that the battery modules 20 are arranged in an array, and the filter 40 and the second pressure relief mechanism 16 are located on the side of the end of the battery module 20 distributed along the column direction (X direction) of the battery cells 21, and the filter 40 is located between the second pressure relief mechanism 16 and the battery module 20; in this way, the length of the first discharge path N' of the emissions released by any battery cell 21 in the battery module 20 through the filter hole 401 of the first filter part 43 will be greater than the length of the second discharge path N of the emissions released by the battery cell 21 through the filter hole 401 of the second filter part 44.
  • the positions of the first filter part 43 and the second filter part 44 can be determined according to the battery cell 21 closest to the second pressure relief mechanism 16, so that it can be ensured that the length of the first discharge path N' of the emissions released by all battery cells 21 through the filter hole 401 of the first filter part 43 will be greater than the length of the second discharge path N through the filter hole 401 of the second filter part 44.
  • the aperture of the filter hole 401 of the first filter part 43 is larger than the aperture of the filter hole 401 of the second filter part 44, so that the low-temperature small particles in the exhaust flowing along the long exhaust path will be directly discharged to the outside of the battery 1100 through the filter hole 401 of the first filter part 43.
  • the filter hole 401 of the first filter part 43 will also block the large particles with higher temperatures in the exhaust; and, the large and small particles with high temperatures in the exhaust flowing along the short exhaust path will be blocked by the filter hole 401 of the second filter part 44 and will not be discharged to the outside of the battery 1100, thereby reducing the risk of causing the exhaust temperature of the battery 1100 to be too high and improving the reliability of the battery 1100; in addition, through the coordinated design of the large and small filter holes 401, the exhaust can be quickly discharged from the battery 1100, reducing the risk of pressure build-up inside the box 10.
  • the box body 10 further includes a bottom plate 15 , a partition 50 is supported on the bottom plate 15 by a spacing element 60 , the battery module 20 is located above the partition 50 , and the first pressure relief mechanism 215 is located at the bottom of the battery cell 21 .
  • the bottom plate 15 may refer to the plate at the bottom of the box body 10.
  • the partition 50 is supported on the bottom plate 15 by the spacing element 60.
  • the partition 50 is supported by the spacing element 60 so that there is a gap between the partition 50 and the bottom plate 15, thereby facilitating the construction of the first sub-pressure relief channel 31 between the partition 50 and the bottom plate 15.
  • the first pressure relief mechanism 215 is located at the bottom of the battery cell 21. At the same time, the battery module 20 is separated from the first sub-pressure relief mechanism by the partition 50. In this way, the emissions released by the first pressure relief mechanism 215 are difficult to contact the electrical components on the top of the battery cell 21, thereby reducing the risk of damage to the battery cell 21 and helping to improve the reliability of the battery 1100.
  • the first pressure relief mechanism 215 may also be located on the side of the battery cell 21, or the first pressure relief mechanism 215 is located on the top of the battery cell 21, and then the partition 50, the spacing element 60, the first sub-pressure relief channel 31 and the second sub-pressure relief channel 34 are designed accordingly according to the position of the first pressure relief mechanism 215, and the specific design can be carried out according to actual needs.
  • the separator 50 is a thermal management component, and the thermal management component is used to exchange heat with the battery module 20 .
  • the thermal management component may refer to a component that exchanges heat with the battery cell 21 , such as a liquid cooling plate or the like.
  • the separator 50 is directly a thermal management component, so there is no need to add additional components, which is beneficial to reducing the number of components of the battery 1100 and facilitating processing and manufacturing.
  • the cross-sectional area of the filter hole 401 with the largest aperture is S
  • the shortest discharge path between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of at least one battery cell 21 is The diameter is L
  • the unit of L is m
  • the unit of S is mm 2 .
  • the cross-sectional area of the filter hole 401 with the largest pore size can be understood as the cross-sectional area of the filter hole 401 with the largest pore size among the filter holes 401 .
  • the shortest discharge path between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of at least one battery cell 21 is L. It can be understood that among the multiple discharge paths through which the discharge released by the first pressure relief mechanism 215 of the battery cell 21 flows to the second pressure relief mechanism 16, the length of the shortest discharge path is L.
  • the cross-sectional area of the largest filter hole 401 of the filter element 40 can be designed to be larger.
  • the setting makes the cross-sectional area of the largest filter hole 401 of the filter element 40 and the shortest discharge path of the battery cell 21 reasonably designed, reducing the risk of excessive exhaust temperature of the battery 1100, which is conducive to improving the reliability of the battery 1100;
  • the cross-sectional area of the filter hole 401 with the largest aperture will not be designed to be too small, so that the filter hole 401 can allow particles to pass smoothly and quickly, thereby reducing the risk of serious damage to the box body 10 due to clogging of the filter element 40, untimely pressure relief, etc.;
  • the cross-sectional area of the filter hole 401 with the largest aperture will not be designed to be too large, so that the filter hole 401 can intercept particles with higher temperatures, thereby reducing the risk of deterioration of the external environment of the battery due to a large number of sparks
  • the first pressure relief mechanism 215 of the battery cell 21 may be located at the top, side, and bottom of the battery cell 21.
  • the positive electrode terminal 214a and the negative electrode terminal 214b of the battery cell 21 may be located at the top of the battery cell 21, or at the same side of the battery cell 21, or at opposite sides of the battery cell 21.
  • the shortest discharge paths of the battery cells 21 are different.
  • the shortest path between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of the battery cells 21 is described below in conjunction with some specific embodiments.
  • the box body 10 includes a top cover 13, a frame 14 and a bottom plate 15.
  • the top cover 13 and the bottom plate 15 are respectively covered on the upper and lower sides of the frame 14 to enclose a storage space for accommodating a battery cell 21.
  • the frame 14 is a rectangular frame.
  • the battery module 20 includes a row of battery cells 21, which are arranged along the length direction (X direction) of the box body 10.
  • Two second pressure relief mechanisms 16 are arranged on the left wall of the frame 14 of the box body 10 in front and back.
  • a first pressure relief mechanism 215 is provided on the top of each battery cell 21.
  • a first exhaust channel 101 is formed between the top surface of the battery cell 21 and the top cover 13.
  • the peripheral wall of the battery module 20 and the inner peripheral wall of the frame 14 enclose an annular channel 33.
  • the exhaust released by the first pressure relief mechanism 215 flows into the annular channel 33 through the first exhaust channel 101, and then moves to the second pressure relief mechanism 16 through the annular channel 33.
  • the discharge path of the leftmost battery cell 21 is taken as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after being released.
  • the dotted arrows in FIG28 illustrate the three discharge paths of the discharge of the battery cell 21 through the first pressure relief mechanism 215 to the second pressure relief mechanism 16.
  • the discharge moves obliquely to the left to the second pressure relief mechanism 16 located at the front side.
  • the discharge path of the exhaust gas moving to the left to the second pressure relief mechanism 16 located on the rear side is the fourth discharge path S'
  • the discharge path of the exhaust gas moving forward to the second pressure relief mechanism 16 located on the front side is the fifth discharge path S".
  • the length of the fourth discharge path S' and the length of the fifth discharge path S" are both greater than the length of the third discharge path S, wherein the third discharge path S can be the shortest discharge path.
  • this embodiment is different from the previous embodiment in that: the number of second pressure relief mechanisms 16 is one, the second pressure relief mechanism 16 is located on the right wall of the frame 14, and an enclosure 80 is provided between the top of the battery cell 21 and the top cover 13.
  • the enclosure 80 encloses a row of battery cells 21 outside the first pressure relief mechanism 215, the enclosure 80 is U-shaped, and the opening of the enclosure 80 faces right.
  • the emissions released by the first pressure relief mechanism 215 flow along the channel enclosed by the enclosure 80 and then flow through the opening of the enclosure 80 into the annular channel 33, and then flow to the second pressure relief mechanism 16 through the annular channel 33.
  • the discharge path of the leftmost battery cell 21 is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after being released.
  • the dotted arrows in FIG31 illustrate two discharge paths of the discharge of the battery cell 21 through the first pressure relief mechanism 215 to the second pressure relief mechanism 16.
  • the discharge path for discharge forward is the third discharge path S; after the discharge is discharged from the opening, the discharge path for discharge backward is the fourth discharge path S'; the length of the third discharge path S is less than the length of the fourth discharge path S', and the third discharge path S can be the shortest discharge path.
  • the length L of the third discharge path S can be measured by the following method; the projection point of the center of the first pressure relief mechanism 215 on the top surface of the battery cell 21 is the first projection point, the projection point of the center of the second pressure relief mechanism 16 on the top surface of the battery cell 21 is the second projection point, the projection line of the periphery of the first pressure relief mechanism 215 on the top surface of the battery cell 21 is the first projection line, the intersection line of the left wall surface of the front frame strip of the enclosure 80 and the top surface of the battery cell 21 is the first intersection line, the line connecting the rear end point of the first intersection line and the first projection point is the second line, and the intersection point of the first projection line and the second line is the third intersection point; the line connecting the front end point of the first intersection line and the second projection point is the third line, and the intersection point of the third line and the right side surface of the rightmost battery cell 21 is the fourth intersection point; the distance between the center of the first pressure relief mechanism 215 and the third intersection point is L4 , the spacing between the
  • the battery module 20 includes two columns of battery cells 21 distributed front and back, each column of battery cells 21 is arranged along the length direction (X direction) of the box body 10, and the two columns of battery cells 21 are arranged along the width direction (Y direction) of the box body 10.
  • the two columns of battery cells 21 are divided into four areas of front, back, left and right. Each area is correspondingly provided with an enclosure 80, and the left and right sides of the frame 14 are provided with a second pressure relief mechanism 16; the rear wall of each enclosure 80 is provided with an opening, and a second exhaust channel 102 is formed between two adjacent enclosures 80.
  • the emissions released by the thermal runaway of the battery cells 21 flow into the second exhaust channel 102 through the opening of the corresponding enclosure 80, and then flow into the annular channel 33 through the second exhaust channel 102, and finally flow to the second pressure relief mechanism 16.
  • the discharge path of the battery cell 21 which is located on the far left and near the front is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after being released.
  • the dashed arrows in FIG33 illustrate the three discharge paths of the discharge of the battery cell 21 through the first pressure relief mechanism 215 to the second pressure relief mechanism 16.
  • the discharge path S is the discharge path in which the discharge is discharged from the opening of the enclosure 80 on the left front side and then discharged to the left to the second pressure relief mechanism 16 on the left side;
  • the fourth discharge path S' is the discharge path in which the discharge is discharged from the opening of the enclosure 80 on the left front side and then discharged to the right to the second pressure relief mechanism 16 on the left side;
  • the fourth discharge path S' is the discharge path in which the discharge is discharged from the opening of the enclosure 80 on the left front side and then discharged to the right to the second pressure relief mechanism 16 on the left side.
  • the discharge path that is discharged to the right to the second pressure relief mechanism 16 on the right side is the fifth discharge path S", and the lengths of the fourth discharge path S' and the fifth discharge path S" are both greater than the length of the third discharge path S, and the third discharge path S can be the shortest discharge path.
  • the length L of the third discharge path S can be measured by the following method; the projection point of the center of the first pressure relief mechanism 215 on the top surface of the battery cell 21 is the first projection point, the projection point of the center of the second pressure relief mechanism 16 on the top surface of the battery cell 21 is the second projection point, the projection line of the periphery of the first pressure relief mechanism 215 on the top surface of the battery cell 21 is the first projection line, the intersection line of the right wall surface of the left rear frame bar of the enclosure 80 and the top surface of the battery cell 21 is the second intersection line, the intersection line of the rear wall surface of the left rear frame bar of the enclosure 80 and the top surface of the battery cell 21 is the third intersection line, the line connecting the first projection point and the front end point of the second intersection line is the fourth line, the intersection point of the fourth line and the first projection line is the fifth intersection point, the line connecting the second projection point and the left end point of the third intersection line is the fifth line, and the intersection point of the fifth line and the left side surface of the leftmost battery cell 21
  • the battery module 20 includes two rows of battery cells 21 distributed front and back, and the two rows of battery cells 21 are divided into two left and right areas. Each area is correspondingly provided with a blocking member 80, and the openings of the two blocking members 80 are arranged opposite to each other.
  • the left and right sides of the frame 14 are provided with a second pressure relief mechanism 16; a second exhaust channel 102 is formed between two adjacent blocking members 80, and the emissions released by the thermal runaway of the battery cell 21 flow into the second exhaust channel 102 through the opening of the corresponding blocking member 80, and then flow into the annular channel 33 through the second exhaust channel 102, and finally flow to the second pressure relief mechanism 16.
  • the discharge path of the battery cell 21 which is located at the far left and near the front is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after being released.
  • the dashed arrows in FIG34 illustrate the three discharge paths of the discharge of the battery cell 21 through the first pressure relief mechanism 215 to the second pressure relief mechanism 16.
  • the discharge path of the discharge from the opening of the left enclosure 80 and then discharged forward to the second pressure relief mechanism 16 located on the left is the third discharge path S; the discharge from the opening of the left enclosure 80 and then discharged backward to the second pressure relief mechanism 16 located on the left is the fourth discharge path S'; the discharge from the opening of the left enclosure 80 and then discharged backward to the second pressure relief mechanism 16 located on the right is the fifth discharge path S", and the lengths of the fourth discharge path S' and the fifth discharge path S" are both greater than the length of the third discharge path S, and the third discharge path S can be the shortest discharge path.
  • the length L of the third discharge path S can be measured by the following method; the projection point of the center of the first pressure relief mechanism 215 on the top surface of the battery cell 21 is the first projection point, the projection point of the center of the second pressure relief mechanism 16 on the top surface of the battery cell 21 is the second projection point, the projection line of the periphery of the first pressure relief mechanism 215 on the top surface of the battery cell 21 is the first projection line, the intersection line of the rear wall surface of the right front frame strip of the enclosure 80 and the top surface of the battery cell 21 is the fourth intersection line, and the right wall surface of the right front frame strip of the enclosure 80 is the fourth intersection line.
  • intersection line of the front wall surface of the front frame strip of the enclosure 80 and the top surface of the battery cell 21 is the fifth intersection line
  • intersection line of the front wall surface of the front frame strip of the enclosure 80 and the top surface of the battery cell 21 is the sixth intersection line
  • the line connecting the first projection point and the left end point of the fourth intersection line is the sixth line
  • the intersection point of the sixth line and the first projection line is the seventh intersection point
  • the line connecting the second projection point and the left end point of the sixth intersection line is the seventh line
  • the intersection point of the seventh line and the left side surface of the battery cell 21 on the leftmost front side is the eighth intersection point
  • the distance between the center of the first pressure relief mechanism 215 and the seventh intersection point is L 15
  • the distance between the seventh intersection and the left endpoint of the fourth intersection is L 16
  • the length of the fourth intersection is L 17
  • the length of the fifth intersection is L 18
  • the length of the sixth intersection is L 19
  • the distance between the eighth intersection and the left endpoint of the sixth intersection is L 20
  • the battery module 20 includes a row of battery cells 21, which are arranged along the length direction (X direction) of the box body 10, and a first pressure relief mechanism 215 is provided on the front side of each battery cell 21.
  • the left wall of the frame 14 is provided with two second pressure relief mechanisms 16 arranged in front and behind.
  • An annular channel 33 is formed between the row of battery cells 21 and the inner wall of the frame 14, and the emissions released by the thermal runaway of the battery cells 21 flow to the second pressure relief mechanism 16 through the annular channel 33.
  • the discharge path of the leftmost battery cell 21 is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after release.
  • the dotted arrows in Figure 36 illustrate the three discharge paths of the discharge of the battery cell 21 to the second pressure relief mechanism 16 via the first pressure relief mechanism 215.
  • the discharge path of the discharge to the left to the second pressure relief mechanism 16 located at the front side is the third discharge path S; the discharge path of the discharge to the right to the second pressure relief mechanism 16 located at the front side is the fourth discharge path S'; the discharge path of the discharge to the left to the second pressure relief mechanism 16 located at the rear side is the fifth discharge path S", and the lengths of the fourth discharge path S' and the fifth discharge path S" are both greater than the length of the third discharge path S, and the third discharge path S can be the shortest discharge path.
  • the battery module 20 includes a row of battery cells 21, which are arranged along the length direction (X direction) of the box body 10, and a first pressure relief mechanism 215 is provided at the bottom of each battery cell 21.
  • the left wall of the frame 14 is provided with two second pressure relief mechanisms 16 arranged front and back.
  • An annular channel 33 is formed between the battery module 20 and the inner wall of the frame 14, and the annular channel 33 also extends between the partition and the inner wall of the frame 14.
  • the battery cell 21 is supported on the bottom plate 15 by a partition 50, and a first sub-pressure relief channel 31 is formed between the partition 50 and the bottom plate 15.
  • the partition 50 is provided with a plurality of first ventilated structures 51, and the plurality of first ventilated structures 51 are respectively connected to the first pressure relief mechanisms 215 of each battery cell 21 in a one-to-one correspondence.
  • the emissions released by the thermal runaway of the battery cell 21 flow to the second pressure relief mechanism 16 through the first sub-pressure relief channel 31 and the annular channel 33 , wherein the first ventilated structure 51 is a through hole and the partition 50 is a liquid cooling plate.
  • the discharge path of the leftmost battery cell 21 is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after release.
  • the dotted arrows in FIG39 illustrate the schematic diagram of three discharge paths of the discharge of the battery cell 21 to the second pressure relief mechanism 16 via the first pressure relief mechanism 215.
  • the discharge path of the discharge to the left to the second pressure relief mechanism 16 located at the rear side is the third discharge path S; the discharge path of the discharge to the right to the second pressure relief mechanism 16 located at the rear side is the fourth discharge path S'; the discharge path of the discharge to the left to the second pressure relief mechanism 16 located at the front side is the fifth discharge path S", and the lengths of the fourth discharge path S' and the fifth discharge path S" are both greater than the length of the third discharge path S, and the third discharge path S can be the shortest discharge path.
  • the battery module 20 includes two columns of battery cells 21, the two columns of battery cells 21 are arranged along the width direction (Y direction) of the box body 10, and both ends of each column of battery cells 21 are connected to end plates 22, and the battery cells 21 are supported on the partition 50, and the partition 50 is supported on the bottom plate 15 through the spacing element 60.
  • the number of spacing elements 60 is three, and the three spacing elements 60 are surrounded to form two first sub-pressure relief channels 31 extending along the width direction (Y direction) of the box body 10.
  • the two first sub-pressure relief channels 31 are respectively connected to the first pressure relief mechanisms 215 of the two columns of battery cells 21, and each column of battery cells 21 is connected to a corresponding first sub-pressure relief channel 31.
  • the emissions released by the thermal runaway of the battery cells 21 flow to the second pressure relief mechanism 16 through the first sub-pressure relief channel 31 and the annular channel 33.
  • the first ventilated structure 51 is a through hole
  • the partition 50 is a liquid cooling plate.
  • the discharge path of the battery cell 21 located on the far right and near the front is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after being released.
  • the dotted arrows in FIG13 illustrate the schematic diagrams of three discharge paths of the discharge of the battery cell 21 to the second pressure relief mechanism 16 via the first pressure relief mechanism 215.
  • the discharge path of the discharge of the discharge released by the battery cell 21 to the right to the second pressure relief mechanism 16 located at the front side is the third discharge path S; the discharge path of the discharge to the right to the second pressure relief mechanism 16 located at the rear side is the fourth discharge path S'; the discharge path of the discharge to the left to the second pressure relief mechanism 16 located at the front side is the fifth discharge path S", and the lengths of the fourth discharge path S' and the fifth discharge path S" are both greater than the length of the third discharge path S, and the third discharge path S can be the shortest discharge path.
  • the length L of the third discharge path S can be measured by the following method; the projection point of the center of the first pressure relief mechanism 215 on the bottom surface of the partition 50 is the first projection point, the projection point of the center of the second pressure relief mechanism 16 on the bottom surface of the partition 50 is the second projection point, the projection line of the periphery of the first ventilated structure 51 on the bottom surface of the partition 50 is the first projection line, the line connecting the first projection point and the second projection point is the tenth line, the intersection of the tenth line and the first projection line is the thirteenth intersection, the intersection of the right side wall of the partition 50 and the tenth line is the fourteenth intersection, the intersection of the plane passing through the tenth line and perpendicular to the bottom surface of the partition 50 and the lower edge line of the right wall of the right end plate 22 is the fifteenth intersection, the distance between the center of the first pressure relief mechanism 215 and the thirteenth intersection is L 28 , the distance between the thirteenth intersection and the fourteenth intersection is L 29 , the distance between the
  • the difference between this embodiment and the previous embodiment is that: the end plate 22 of the battery module 20 extends into the annular channel 33 and forms a sealing structure with the bottom plate 15, the number of the spacing elements 60 is twelve, and the twelve spacing elements 60 are arranged in a matrix and enclosed to form two first sub-pressure relief channels 31 and three second sub-pressure relief channels 34, the first sub-pressure relief channel 31 extends along the width direction (Y direction) of the box body 10, the two first sub-pressure relief channels 31 are arranged at intervals along the width direction (Y direction) of the box body 10, the second sub-pressure relief channel 34 extends along the width direction (Y direction) of the box body 10, and the three second sub-pressure relief channels 34 are arranged at intervals along the length direction (X direction) of the box body 10.
  • the emissions released by the battery cell 21 cannot pass through the end plate 22 to the right into the annular channel 33, but must flow along the first sub-pressure relief channel 31 to the second sub-pressure relief channel 34, and then enter the annular channel 33 through the second sub-pressure relief channel 34, and finally flow to the second pressure relief mechanism 16.
  • the discharge path of the battery cell 21 on the far right and located in the front is selected as an example for explanation.
  • the discharge of the battery cell 21 has multiple discharge paths after being released.
  • the dotted arrows in FIG15 illustrate the schematic diagrams of three discharge paths of the discharge of the battery cell 21 through the first pressure relief mechanism 215 to the second pressure relief mechanism 16.
  • the discharge path of the discharge released by the battery cell 21 to be discharged forward to the second pressure relief mechanism 16 located at the front side is the third discharge path S; the discharge path of the discharge to be discharged backward to the second pressure relief mechanism 16 located at the rear side is the fourth discharge path S'; the discharge path of the discharge to be discharged backward to the second pressure relief mechanism 16 located at the front side is the fifth discharge path S", and the lengths of the fourth discharge path S' and the fifth discharge path S" are both greater than the length of the third discharge path S, and the third discharge path S can be the shortest discharge path.
  • the length L of the third discharge path S can be measured by the following method; the projection point of the center of the first pressure relief mechanism 215 on the bottom surface of the partition 50 is the first projection point, the projection point of the center of the second pressure relief mechanism 16 on the front wall of the rightmost front spacing element 60 is the second projection point, the projection line of the periphery of the first ventilated structure 51 on the bottom surface of the partition 50 is the first projection line, the intersection line of the left wall of the rightmost front spacing element 60 and the bottom surface of the partition 50 is the seventh intersection line, the line connecting the rear end point of the seventh intersection line and the first projection point is the eleventh line, the intersection point of the tenth line and the first projection line is the sixteenth intersection point, the line connecting the front end point of the seventh intersection line and the second projection point is the twelfth line, the intersection point of the right wall of the right end plate 22 and the twelfth line is the seventeenth intersection point, the distance between the center of the first pressure relief mechanism 215 and the sixteenth intersection point is
  • an annular member 70 is provided in the annular channel 33, and the annular member 70 divides the annular channel 33 into a first sub-annular channel
  • the annular member 70 has a second ventilated structure 71 in the middle of the front side wall and the rear side wall, and the second ventilated structure 71 can connect the first sub-annular channel 331 and the second sub-annular channel 332.
  • the second ventilated structure 71 is a through hole.
  • the emissions released by the battery cell 21 are discharged from the second sub-pressure relief channel 34 and then enter the first sub-annular channel 331, then enter the second sub-pressure relief channel 34 through the second ventilated structure 71, and finally flow to the second pressure relief mechanism 16 along the second sub-pressure relief channel 34.
  • the third emission path S extends from the second sub-pressure relief channel 34 and then enters the first sub-annular channel 331 and then enters the second sub-pressure relief channel 34 through the second ventilated structure 71, and finally flows to the second pressure relief mechanism 16.
  • the cross-sectional area of the filter hole 401 with the largest aperture is S
  • the length of the shortest discharge path between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of any battery cell 21 is L
  • the unit of L is m
  • the unit of S is mm 2 .
  • first pressure relief mechanism 215 of any battery cell 21 it can be understood that the first pressure relief mechanism 215 of each battery cell 21 , that is, the shortest discharge path between the first pressure relief mechanism 215 and the second pressure relief mechanism 16 of each battery cell 21 satisfies the above equation.
  • the shortest discharge path L of each battery cell 21 and the cross-sectional area S of the filter hole 401 with the largest aperture of the filter element 40 are both within a reasonable design range, thereby better improving the reliability of the battery 1100.
  • the shortest discharge path L of the battery cell 21 and the cross-sectional area S of the filter hole 401 with the largest aperture of the filter element 40 are both within a more reasonable design range, the risk of excessive exhaust temperature of the battery 1100 is reduced, and the reliability of the battery 1100 is improved.
  • the cross-sectional area S of the filter hole 401 with the largest aperture can be designed to be larger, thereby reducing the risk of bulging of the box body 10 or a large amount of spark particles being ejected from the battery due to poor exhaust.
  • the value of may be, but is not limited to, 0.0021 m/ mm2 , 0.005 m/ mm2 , 0.005 m/ mm2 , 0.08 m/ mm2 , 0.1 m/ mm2 , 1 m/ mm2 , 10 m/ mm2 , 15 m/ mm2 , 16 m/mm2, 20 m/ mm2 , 25 m / mm2 , 30 m/ mm2 , 35 m/ mm2 , 40 m/ mm2 , 45 m/ mm2 , 50 m/ mm2 or 54.9 m/ mm2 .
  • the length of the shortest emission path is within the range, and the shortest emission path is not designed to be too short, which will result in a short cooling time for the particles, and the temperature of the particles discharged from the battery 1100 is high, which may easily cause the external environment of the battery 1100 to deteriorate; the shortest emission path is not designed to be too long, which will result in a long exhaust time, untimely pressure relief, and explosion of the box 10.
  • the value of L may be, but is not limited to, 0.05 m, 0.1 m, 0.5 m, 2 m, 2.5 m, 3 m, 3.5 m, or 4 m.
  • Table 1 shows the parameters of the length L of the shortest discharge path, the parameters of the cross-sectional area S of the filter hole 401 with the largest aperture, and the experimental results used in some experiments.
  • the specific method of the experiment adopts the method described in GB 38031-2020, which will not be repeated here.
  • the housing 10 When the value of is in the range of 16.12 m/mm 2 to 54.1714 m/mm 2 , the housing 10 is prone to bulging. Although the sealing performance of the housing 10 is affected to a certain extent, the battery 1100 can still be used. When the value is equal to or greater than 55 m/mm 2 , the sealing performance of the box body 10 will be seriously damaged, and the box body 10 may be seriously damaged or suffer serious hazards of excessive temperature.
  • the volume energy density of the battery 1100 is E
  • the cross-sectional area of the filter hole 401 with the largest aperture is S
  • the unit of E is Wh/L
  • the unit of S is mm 2 .
  • the volume energy density of the battery 1100 may refer to the energy contained in the volume of a single cell of the battery 1100 . During actual use, the volume energy density of the battery 1100 may be directly read from the nameplate of the battery 1100 .
  • the severity of the thermal runaway of the battery 1100 increases, and the battery cells 21 release emissions more violently, causing emissions with higher temperatures and faster speeds to flow along the pressure relief channel 30 toward the second pressure relief mechanism 16.
  • the risk of overheating of the battery 1100 increases, and the higher the requirements for the filtering function of the filter element 40, the smaller the cross-sectional area of the filter hole 401 with the largest aperture of the filter element 40 can be designed.
  • the setting makes the cross-sectional area S of the filter hole 401 with the largest aperture of the filter element 40 and the volume energy density E of the battery 1100 have a reasonable design, reducing the risk of excessive exhaust temperature of the battery 1100, which is conducive to improving the reliability of the battery 1100;
  • the cross-sectional area of the filter hole 401 with the largest aperture will not be designed to be too small, so that the filter hole 401 can allow particles to pass smoothly and quickly, thereby reducing the risk of serious damage to the box body 10 due to clogging of the filter element 40, untimely pressure relief, etc.;
  • the cross-sectional area of the filter hole 401 with the largest aperture will not be designed to be too large, so that the filter hole 401 can intercept particles with higher temperatures, thereby reducing the risk of the external environment of the battery 1100 deteriorating due to a large number
  • the cross-sectional area S of the filter hole 401 with the largest aperture of the filter element 40 and the volume energy density E of the battery 1100 have a more reasonable design, the risk of excessively high external exhaust temperature of the battery 1100 is reduced, and the reliability of the battery 1100 is improved.
  • the cross-sectional area S of the filter hole 401 with the largest aperture can be designed to be larger, thereby reducing the risk of bulging of the box body 10 or a large amount of spark particles being ejected from the battery due to poor exhaust.
  • the value can be but not limited to 17(Wh/L)/mm 2 , 20(Wh/L)/mm 2 , 23(Wh/L)/mm 2 , 100(Wh/L)/mm 2 , 500(Wh/L)/mm 2 , 1000(Wh/L)/mm 2 , 1500(Wh/L)/mm 2 , 2000(Wh/L)/mm 2 , 2500(Wh/L)/mm 2 , 3000(Wh/L)/mm 2 , 3200(Wh/L)/mm 2 , 3500(Wh/L)/mm 2 , 4000(Wh/L)/mm 2 , 4500(Wh/L)/mm 2 , 5000(Wh/L)/mm 2 , 5500(Wh/L)/mm 2 , 6000(Wh/L)/mm 2 , 6500(Wh/L)/mm 2 , 7000(Wh/L)/mm 2 , 7500(
  • the volume energy density E of most batteries 1100 is within the above range, so that the above formula can be applied to most batteries 1100 and has a wide range of applicability.
  • the value of E may be, but is not limited to, 400Wh/L, 450Wh/L, 500Wh/L, 550Wh/L, 600Wh/L, 650Wh/L, 700Wh/L, 750Wh/L or 800Wh/L.
  • the cross-sectional area S of the filter hole 401 with the largest aperture is within the above range.
  • the filter element 40 can effectively intercept most high-temperature particles, reducing the risk of excessive exhaust temperature of the battery 1100. If the cross-sectional area S of the largest filter hole 401 is designed to be too small, particles are likely to clog the filter element 40, resulting in untimely pressure relief, which can easily cause serious damage to the box 10; if the cross-sectional area S of the largest filter hole 401 is designed to be too large, large particles with higher temperatures can easily pass through the filter element 40, causing the exhaust temperature of the battery 1100 to be too high.
  • the cross-sectional area of the filter hole 401 with the largest aperture is more reasonably designed, which can further reduce the risk of excessive exhaust temperature of the battery 1100.
  • the value of S may be, but is not limited to, 0.06mm2 , 0.1mm2 , 0.15mm2 , 0.2mm2 , 0.25mm2 , 0.3mm2, 1mm2 , 2mm2 , 3mm2 , 4mm2 , 5mm2 , 6mm2 , 6.25mm2, 7mm2, 8mm2, 9mm2, 10mm2 , 12mm2 , 14mm2 , 16mm2 , 18mm2 , 20mm2, 22mm2 , 24mm2 or 25mm2 .
  • Table 2 shows the parameters of the volume energy density E of the battery 1100, the parameters of the cross-sectional area S of the filter hole 401 with the largest aperture, and the experimental results used in some experiments.
  • the specific method of the experiment adopts the method described in GB 38031-2020 and will not be repeated here.
  • the housing 10 When the value of is in the range of 3279 (Wh/L)/mm 2 to 11300 (Wh/L)/mm 2 , the housing 10 will bulge. Although the sealing performance of the housing 10 will be affected to a certain extent, the battery 1100 can still be used. When the value is greater than 11300 (Wh/L)/mm 2 , the sealing of the box body 10 is easily seriously damaged, and the box body 10 may be seriously damaged or suffer serious hazards of excessive temperature.
  • the battery of the embodiment of the present application can effectively intercept high-temperature particulate matter in the thermal runaway emissions of the battery by rationally designing the structure of the filter element 40, while also reducing the risk of poor pressure relief of the battery 1100 or even explosion due to blockage by particulate matter.
  • an electrical device including the battery 1100 according to the above embodiment.

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Abstract

提供一种电池及用电装置，该电池包括箱体、电池模块和泄压通道，电池模块位于箱体内，电池模块包括至少一个电池单体，每个电池单体设有第一泄压机构，箱体具有第二泄压机构；泄压通道连接至少一个电池单体的第一泄压机构与第二泄压机构，第一泄压机构用于在致动的情况下将电池单体内部产生的排放物释放到泄压通道，泄压通道用于将排放物引导至第二泄压机构，第二泄压机构用于在致动的情况下将泄压通道的排放物释放到箱体的外部；其中，电池单体、电池模块、箱体和泄压通道中的至少一个设有过滤件，过滤件设有用于阻挡排放物中的颗粒物通过的过滤孔，减少电池喷出的高温颗粒物，提高电池使用的可靠性。

Description

电池及用电装置
本申请要求于2023年06月07日在中国专利局提交的、申请号为202310675424.7、发明名称为“电池及用电装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池可靠性技术领域，尤其涉及一种电池及用电装置。
背景技术
电池广泛用于各种电子设备，例如手机、笔记本电脑、电瓶车、电动汽车、电动飞机、电动轮船、电动玩具汽车、电动玩具轮船、电动玩具飞机和电动工具等等。电池可以包括镉镍电池、氢镍电池、锂离子电池和二次碱性锌锰电池等。
在电池技术的发展过程中，除了研究电池的性能，如何提高电池使用时的可靠性也是电池的研究重点之一。
上述的陈述仅用于提供与本申请有关的背景技术信息，而不必然地构成现有技术。
申请内容
本申请实施例的目的在于：提供一种电池及用电装置，以提高电池的使用可靠性。
本申请实施例采用的技术方案是：
第一方面，本申请实施例提供了一种电池，包括箱体、电池模块和泄压通道，电池模块位于箱体内，电池模块包括至少一个电池单体，每个电池单体设有第一泄压机构，箱体具有第二泄压机构；泄压通道连接至少一个电池单体的第一泄压机构与第二泄压机构，第一泄压机构用于在致动的情况下将电池单体内部产生的排放物释放到泄压通道，泄压通道用于将排放物引导至第二泄压机构，第二泄压机构用于在致动的情况下将泄压通道的排放物释放到箱体的外部；其中，电池单体、电池模块、箱体和泄压通道中的至少一个设有过滤件，过滤件设有用于阻挡排放物中的颗粒物通过的过滤孔。
本申请实施例的电池，当电池内的电池单体发生热失控后，第一泄压机构致动，电池单体产生的排放物通过第一泄压机构释放到泄压通道内并沿泄压通道运动到第二泄压机构，随着热失控的继续加剧，第二泄压机构致动，泄压通道内的排放物通过第二泄压机构释放到箱体的外部，而在此过程中，由于电池单体、电池模块、箱体和泄压通道中的至少一个设有过滤件，通过过滤件上的过滤孔可阻挡排放物中的高温的颗粒物通过，从而减少电池喷出的高温的颗粒物，有利于降低电池排气温度过高的风险，提高电池使用的可靠性。
在一些实施例中，在过滤件设于电池单体的情况下，第一泄压机构与过滤件为整体化结构，或者，过滤件与电池单体的壳体连接；在过滤件设于箱体的情况下，第二泄压机构与过滤件为整体化结构，或者，过滤件与箱体连接；或者，箱体的侧壁设有过滤孔，箱体的侧壁设有过滤孔的部分形成过滤件。
通过采用该实施例的技术方案，过滤件可灵活安装于箱体，制作方便。
在一些实施例中，在过滤件设于箱体的情况下，第二泄压机构朝向电池模块的侧方设有过滤件，以阻挡电池单体释放的颗粒物进入第二泄压机构；和/或，第二泄压机构背向电池模块的侧方设有过滤件，以阻挡第二泄压机构释放的颗粒物通过。
通过采用该实施例的技术方案，过滤件安装位置灵活，方便加工制作。
在一些实施例中，过滤件的所有的过滤孔的横截面积之和为过滤面积；在第二泄压机构朝向电池模块的侧方设有过滤件的情况下，位于第二泄压机构朝向电池模块的侧方的过 滤件为第一过滤件，第一过滤件的过滤面积大于第二泄压机构的最大泄压面积；在第二泄压机构背向电池模块的侧方设有过滤件的情况下，位于第二泄压机构背向电池模块的侧方的过滤件为第二过滤件，第二过滤件的过滤面积小于第二泄压机构的最大泄压面积。
通过采用该实施例的技术方案，通过采用该实施例的技术方案，排放物的流通面积沿排放路径减小，可达到逐级泄压的效果，有利于提高排放物的排放效果，提高电池的使用可靠性；另外，流通面积逐步减小，也有利于减少设计冗余，有利于降低制作成本。
在一些实施例中，在第二泄压机构朝向电池模块的侧方设有多个第一过滤件的情况下，多个第一过滤件沿电池单体释放出来的排放物的排放路径依次排布，多个第一过滤件的过滤面积沿排放物的排放路径减小；在第二泄压机构背向泄压通道的侧方设有多个第二过滤件的情况下，多个第二过滤件沿第二泄压机构释放的排放物的排放路径依次排布，多个第二过滤件的过滤面积沿排放物的排放路径减小。
通过采用该实施例的技术方案，可实现排放物的多级过滤，有利于减少颗粒物的排放数量，同时，还可实现排放物的多级泄压，排放物的排放效果好，有利于提高电池的使用可靠性。
在一些实施例中，在第二泄压机构朝向电池模块的侧方设有多个第一过滤件的情况下，多个第一过滤件的过滤孔的孔径沿排放物的排放路径减小；在第二泄压机构背向泄压通道的侧方设有多个第二过滤件的情况下，多个第二过滤件的过滤孔的孔径沿排放物的排放路径减小。
通过采用该实施例的技术方案，可先将排放物中的大颗粒物过滤掉，再将排放物中的小颗粒过滤掉，这样逐级过滤有利于降低过滤件堵塞的概率，减少泄压不畅的风险，有利于提高电池的使用可靠性。
在一些实施例中，过滤件与第二泄压机构间隔设置。
通过采用该实施例的技术方案，可减少第二泄压机构和过滤件相干涉的风险。
在一些实施例中，过滤件包括板部以及环设于板部周围的环壁部，环壁部的一端与板部连接，环壁部的另一端与箱体连接，环壁部环设于第二泄压机构的周围，环壁部和板部中的至少一个设有过滤孔。
通过采用该实施例的技术方案，过滤件的结构简单，加工制作简单。
在一些实施例中，过滤件具有第一过滤部和第二过滤部，第一过滤部和第二过滤部均设有多个过滤孔，至少一个电池单体的第一泄压机构和第二泄压机构之间形成有第一排放路径和第二排放路径，第一排放路径经第一过滤部的过滤孔，第二排放路径经第二过滤部的过滤孔；在第一排放路径的长度大于第二排放路径的长度情况下，第一过滤部的过滤孔的孔径大于第二过滤部的过滤孔的孔径。
通过采用该实施例的技术方案，第一过滤部的过滤孔的孔径大于第二过滤部的过滤孔的孔径，这样沿长排放路径流动的排放物中的低温小颗粒物会直接通过第一过滤部的过滤孔排放到电池外，同时，第一过滤部的过滤孔也会将排放物中的温度较高的大颗粒阻挡；并且，而沿短排放路径流动的排放物中的温度高的大小颗粒物均会被第二过滤部的过滤孔阻挡，不会排放到电池外，这样便可减少电池排气温度过高的风险，提高电池的使用可靠性；另外，通过大小过滤孔的配合设计，排放物可快速地排出电池外，减少箱体内部憋压的风险。
在一些实施例中，过滤孔的数量为多个，任意两个过滤孔的孔径相同，或者，至少两个过滤孔的孔径不同。
通过采用该实施例的技术方案，过滤孔的孔径可灵活设置，方便加工制作。
在一些实施例中，孔径最大的过滤孔的横截面积为S，至少一个电池单体的第一泄压机构和第二泄压机构之间的最短排放路径的长度为L，则，其 中，L的单位为m，S的单位为mm2。
通过采用该实施例的技术方案，通过的设定，使得过滤件的孔径最大的过滤孔的横截面积与电池单体的最短排放路径具有合理的设计，减少电池排气温度过高的风险，有利于提升电池的使用可靠性。
在一些实施例中，孔径最大的过滤孔的横截面积为S，任意一个电池单体的第一泄压机构和第二泄压机构之间的最短排放路径为L，则，其中，L的单位为m，S的单位为mm2。
通过采用该实施例的技术方案，每个电池单体的最短排放路径与过滤件的孔径最大的过滤孔的横截面积均处于合理的设计范围内，更好地提升电池的使用可靠性。
在一些实施例中，
通过采用该实施例的技术方案，过滤件的孔径最大的过滤孔的横截面积与电池单体的最短排放路径具有更合理的设计，电池发生排气温度过高的风险更小，电池的使用可靠性更好。
在一些实施例中，0.05m≤L≤4m。
通过采用该实施例的技术方案，最短排放路径的长度位于该范围内，最短排放路径不至于设计的过短，而导致颗粒物降温时间短，电池排出的颗粒物温度高容易引起电池外部环境恶化；最短排放路径不至于设于过长，而导致排放物的排放时间长，泄压不及时而出现箱体损坏严重。
在一些实施例中，电池的体积能量密度为E，孔径最大的过滤孔的横截面积为S，则，其中，E的单位为Wh/L，S的单位为mm2。
通过采用该实施例的技术方案，通过的设定，使得过滤件的孔径最大的过滤孔的横截面积与电池的体积能量密度具有合理的设计，减少电池排气温度过高的风险，有利于提升电池的使用可靠性。
在一些实施例中，
通过采用该实施例的技术方案，过滤件的孔径最大的过滤孔的横截面积与电池的体积能量密度具有更合理的设计，电池发生排气温度过高的风险更小，电池的使用可靠性更好。
在一些实施例中，400Wh/L≤E≤800Wh/L。
通过采用该实施例的技术方案，大部分电池的体积能量密度E位于上述范围内，从而使得上述公式能够适用于大部分电池中，适用范围广。
在一些实施例中，0.06mm2≤S≤25mm2。
通过采用该实施例的技术方案，孔径最大的过滤孔的横截面积S位于上述范围内，过滤件可有效地拦截大部分高温颗粒物，减少电池排气温度过高的风险。
在一些实施例中，0.25mm2≤S≤6.25mm2。
通过采用该实施例的技术方案，孔径最大的过滤孔的横截面积设计更合理，能够进一步地减小，减少电池排气温度过高的风险。
在一些实施例中，泄压通道还包括用于与第二泄压机构连接的第一子泄压通道，电池还包括分隔件，分隔件用于隔开电池模块与第一子泄压通道，分隔件设有多个第一可通气结构，每个第一可通气结构连接至少一个电池单体的第一泄压机构和第一子泄压通道。
通过采用该实施例的技术方案，电池模块中的电池单体热失控后，该电池单体的第一泄压机构释放的排放物经第一可通气结构进入第一泄压通道，而第一泄压通道与电池模块之间通过分隔件隔开，这样可减少第一泄压通道内的排放物与电池模块中的其他电池单体的接触风险，减少热失控蔓延风险，有利于提高电池的使用可靠性。
在一些实施例中，泄压通道包括至少两个第一子泄压通道，每个第一子泄压通道连接不同的电池单体所对应的第一可通气结构，第一子泄压通道间通过间隔元件隔开。
通过采用该实施例的技术方案，当其中一个电池单体发生热失控的情况下，该电池单体释放的排放物进入与该电池单体连接的第一子泄压通道内，且第一子泄压通道间通过间隔元件隔开，这样排放物不会直接进入其他第一子泄压通道，有利于减少热失控蔓延的风险。
在一些实施例中，泄压通道还包括连通通道，分隔件的壁面和箱体的内壁面围设形成连通通道，每个第一子泄压通道通过连通通道与第二泄压机构相连接。
通过采用该实施例的技术方案，连接通道采用分隔件的壁面与箱体的内壁面围设形成连通通道，结构简单，方便加工制作。
在一些实施例中，电池模块包括至少一列电池单体，每列电池单体包括至少一个电池单体，每列电池单体对应设置有至少一个第一子泄压通道，每个第一子泄压通道沿对应的一列电池单体的排布方向延伸；每列电池单体所对应的每个第一可通气结构均与对应的第一子泄压通道连接。
通过采用该实施例的技术方案，电池单体发生热失控的情况下，该电池单体释放的排放物会进入对应的第一子泄压通道排出，排放物不会进入其他第一子泄压通道与其他电池单体接触，减少热失控蔓延的风险，提高电池单体的可靠性。
在一些实施例中，第二泄压机构位于电池模块沿第一子泄压通道的延伸方向的端部的侧方。
通过采用该实施例的技术方案，电池单体热失控后，第一子泄压通道内的排放物可快速地排放到第二泄压机构处，电池泄压排气效果好。
在一些实施例中，连通通道为环形通道，环形通道环设于分隔件的周围。
通过采用该实施例的技术方案，从第一子泄压通道排放出的排放物会进入环形通道并沿环形通道流动，这样可延长排放物的排放路径，从而延长排放物中的颗粒物降温时长，颗粒物排出电池外引起电池排气温度过高的风险小。
在一些实施例中，至少一列电池单体的两端设有端板，端板插入环形通道并与箱体的内壁面密封连接；泄压通道还包括第二子泄压通道，第二子泄压通道与第一子泄压通道相交，第二子泄压通道用于连通对应的第一子泄压通道和环形通道。
通过采用该实施例的技术方案，电池单体释放的排放物需经第一子泄压通道、第二子泄压通道和环形通道后流到第二泄压机构处，最终排出电池外，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于降低电池排气温度过高的风险。
在一些实施例中，每列电池单体的两端均设有端板，每个第一子泄压通道与第二子泄压通道连通。
通过采用该实施例的技术方案，电池单体中任意一个电池单体发生热失控，其释放的排放物均通过对应的第一子泄压通道和第二子泄压通道流入环形通道内，再经环形通道流动第二泄压机构，再经第二泄压机构释放到电池的外部，有利于提高电池的使用可靠性。
在一些实施例中，泄压通道包括多个第二子泄压通道，第二子泄压通道间通过间隔元件隔开。
通过采用该实施例的技术方案，多个第二子泄压通道的设计，使得第一子泄压机构内的排放物可经多个第二子泄压通道内排放，有利于排放物的快速排出，减少箱体内部憋压、温度过高等风险，提高电池的使用可靠性。
在一些实施例中，多个第二子泄压通道沿第一子泄压通道的延伸方向间隔排布。
通过采用该实施例的技术方案，在第一子泄压通道的延伸方向排布的电池单体，可通过与之对应的第二子泄压通道快速将电池单体的释放的排放物排入环形通道内，最终经第二泄压机构释放到箱体的外部，从而减少箱体内部憋压、温度过高等风险，有利于提高电池的使用可靠性。
在一些实施例中，第一子泄压通道和第二子泄压通道垂直。
通过采用该实施例的技术方案，第一子泄压通道和第二子泄压通道分布规整，方便加工制作。
在一些实施例中，环形通道设有与箱体连接的环形件，环形件用于将环形通道分隔为第一子环形通道和第二子环形通道，第二子环形通道环设于第一子环形通道的周围；环形件开设有用于连通第一子环形通道和第二子环形通道的第二可通气结构，第二子环形通道与第二泄压机构连接，第一子环形通道与第一子泄压通道连通。
通过采用该实施例的技术方案，电池单体释放的排放物需将第一子环形通道和第二子环形通道，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于减少电池排气温度过高的风险，有利于提高电池的使用可靠性。
在一些实施例中，第二可通气结构为通孔。
通过该实施例的技术方案，第二可通气结构为通孔，结构简单，方便加工制作。
在一些实施例中，环形件包括至少三个依次首尾连接的侧壁部，靠近第二泄压机构的侧壁部设有第二可通气结构。
通过采用该实施例的技术方案，第二可通气结构与第二泄压机构的距离近，经第二可通气结构的排放物可快速地运动到第二泄压机构，再经第二泄压机构排出，有利于箱体内部憋压等风险，有利于提高电池的使用可靠性。
在一些实施例中，在过滤件设于箱体的情况下，靠近第二泄压机构的侧壁部为过滤件，过滤孔为第二可通气结构。
通过采用该实施例的技术方案，直接在靠近第二泄压机构的侧壁部开设过滤孔，即可实现排放物的过滤，也可以实现第一子环形通道和第二子环形通道的连通，环形件和过滤件集成，其结构简单，方便加工制作。
在一些实施例中，环形件包括至少三个依次首尾连接的侧壁部，远离第二泄压机构的侧壁部设有第二可通气结构。
通过采用该实施例的技术方案，由于第二可通气结构与第二泄压机构之间距离较远，因此，经过第二可通气结构的排放物需要运动一定距离才能流到第二泄压机构处，从而排出箱体，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，颗粒物的出箱温度低，有利于降低电池排气温度过高的风险，提高电池的使用可靠性。
在一些实施例中，靠近第二泄压机构的侧壁部为第一侧壁部，与第一侧壁部相邻的侧壁部和与第一侧壁部相对的侧壁部中的至少一个设有第二可通气结构。
通过采用该实施例的技术方案，第二可通气结构远离第二泄压机构的设计，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于降低电池排气温度过高的风险。
在一些实施例中，第二可通气结构位于对应的侧壁部的中部。
通过采用该实施例的技术方案，第二可通气结构位于侧壁部的中部，这样位于两端的电池单体到第二可通气结构的距离均不会太远，这样位于端部的电池单体释放的排放物也能够快速地排出，有利于提高电池的使用可靠性。
在一些实施例中，在过滤件设于箱体的情况下，远离第二泄压机构的侧壁部为过滤件，过滤孔为第二可通气结构。
通过采用该实施例的技术方案，直接在远离第二泄压机构的侧壁部开设过滤孔，即可实现排放物的过滤，也可以实现第一子环形通道和第二子环形通道的连通，环形件和过滤件集成，其结构简单，方便加工制作。
在一些实施例中，在过滤件设于箱体的情况下，过滤件盖设于第二可通气结构。
通过采用该实施例的技术方案，过滤件盖设在第二可通气结构处，其结构简单，方便加工制作。
在一些实施例中，过滤件位于电池模块和第二泄压机构之间；过滤件具有第一过滤部和第二过滤部，第一过滤部和第二过滤部均设有多个过滤孔，最靠近第二泄压机构的电池单体的第一泄压机构和第二泄压机构之间形成有第一排放路径和第二排放路径，第一排放路径经第一过滤部的过滤孔，第二排放路径经第二过滤部的过滤孔；在第一排放路径的长度大于第二排放路径的长度的情况下，第一过滤部的过滤孔的孔径大于第二过滤部的过滤孔的孔径。
通过采用该实施例的技术方案，第一过滤部的过滤孔的孔径大于第二过滤部的过滤孔的孔径，这样沿长排放路径流动的排放物中的低温小颗粒物会直接通过第一过滤部的过滤孔排放到电池外，同时，第一过滤部的过滤孔也会将排放物中的温度较高的大颗粒阻挡；并且，而沿短排放路径流动的排放物中的温度高的大小颗粒物均会被第二过滤部的过滤孔阻挡，不会排放到电池外，这样便可减少引起电池排气温度过高的风险，提高电池的使用可靠性；另外，通过大小过滤孔的配合设计，排放物可快速地排出电池外，减少箱体内部憋压的风险。
在一些实施例中，箱体还包括底板，分隔件通过间隔元件支撑于底板上，电池模块位于分隔件的上方，第一泄压机构位于电池单体的底部。
通过采用该实施例的技术方案，第一泄压机构位于电池单体的底部，同时，电池模块与第一子泄压机构通过分隔件隔开，这样第一泄压机构释放的排放物难以与电池单体顶部的电气部件接触，减少电池单体的损坏风险，有利于提高电池的使用可靠性。
在一些实施例中，分隔件为热管理部件，热管理部件用于与电池模块进行换热。
通过该实施例的技术方案，分隔件直接为热管理部件，这样无需增加额外的部件，有利于减少电池的零部件数量，方便加工制作。
第二方面，本申请实施例提供了一种用电装置，包括如上任一实施例的电池。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或示范性技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一实施例提供的用电装置的结构示意图。
图2为本申请一实施例提供的电池的结构示意图。
图3为本申请一实施例提供的电池单体的结构示意图。
图4为本申请另一实施例提供的电池的分解示意图。
图5为图4所示的电池的过滤件处的一个视角的局部结构示意图。
图6为图4所示的电池的过滤件处的另一个视角的局部结构示意图。
图7为图4所示的电池的一个视角的结构示意图。
图8为沿图7中A-A线的剖切视图。
图9为沿图7中B-B线的剖切视图。
图10为图8中C处的局部放大图。
图11为图8中D处的局部放大图。
图12为图4所示的电池的另一视角的结构示意图。
图13为沿图12中E-E线的剖切视图。
图14为本申请又一实施例提供的电池的结构示意图。
图15为沿图14中F-F线的剖切视图。
图16为沿图15中G-G线的剖切视图。
图17为本申请又一实施例提供的电池的结构示意图。
图18为沿图17中H-H线的剖切视图。
图19为图18中I处的局部放大图。
图20为图18中J处的局部放大图。
图21为图18中K处的局部放大图。
图22为图17所示的电池的截面图。
图23为本申请又一实施例提供的电池的结构示意图。
图24为沿图23中M-M线的剖切视图。
图25为图23所示的电池的截面图。
图26为本申请实施例提供的多种电池单体的结构示意图。
图27为本申请又一实施例提供的电池的分解示意图。
图28为图27所示的电池隐藏顶盖后的结构示意图。
图29为图27所示的电池的截面图。
图30为本申请又一实施例提供的电池的分解示意图。
图31为图30所示的电池隐藏顶盖后的结构示意图。
图32为图30所示的电池的截面图。
图33为本申请又一实施例提供的电池隐藏顶盖后的结构示意图。
图34为本申请又一实施例提供的电池隐藏顶盖后的结构示意图。
图35为本申请又一实施例提供的电池的分解示意图。
图36为图35所示的电池隐藏顶盖后的结构示意图。
图37为图35所示的电池的截面图。
图38为本申请又一实施例提供的电池的分解示意图。
图39为图38所示的电池的截面图。
图40为图38所示的电池的截面图。
其中，图中各附图标记：
1000、车辆；1100、电池；1200、控制器；1300、马达；10、箱体；11、第一部分；12、第二部分；13、顶盖；14、框架；15、底板；16、第二泄压机构；141、泄压孔；101、第一排气通道；102、第二排气通道；20、电池模块；21、电池单体；211、壳体；212、端盖；213、电极组件；214、电极端子；214a、正电极端子；214b、负电极端子；215、第一 泄压机构；22、端板；30、泄压通道；31、第一子泄压通道；32、连通通道；33、环形通道；34、第二子泄压通道；331、第一子环形通道；332、第二子环形通道；40、过滤件；41、板部；42、环壁部；43、第一过滤部；44、第二过滤部；401、过滤孔；50、分隔件；51、第一可通气结构；60、间隔元件；70、环形件；71、第二可通气结构；72、侧壁部；73、第一侧壁部；80、围挡件。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图1～40中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图1～40描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的描述中，需要说明的是，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
还需说明的是，本申请实施例中以同一附图标记表示同一组成部分或同一零部件，对于本申请实施例中相同的零部件，图中可能仅以其中一个零件或部件为例标注了附图标记，应理解的是，对于其他相同的零件或部件，附图标记同样适用。
在本申请中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。“至少一个”的含义是一个或一个以上，除非另有明确具体的限定。
在本申请中，为了方便描述，附图中的Z轴表示上下方向，Z轴的正向表示上，Z轴的负向表示下，附图中的Y轴表示前后方向，Y轴的正向表示后，Y轴的负向表示前，附 图中的X轴表示左右方向，X轴的正向表示右，X轴的负向表示左。
本申请实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
本申请实施例中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：柱形电池单体、方体方形电池单体和软包电池单体，本申请实施例对此也不限定。
电池单体包括电极组件和电解液，电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。
电池技术的发展要同时考虑多方面的设计因素，例如，能量密度、循环寿命、放电容量、充放电倍率等性能参数，另外，还需要考虑电池在使用过程中的可靠性。
对于电池单体来说，主要的安全危险来自于充电和放电过程，同时还有适宜的环境温度设计，为了有效地避免不必要的损失，对电池单体一般会有至少三重保护措施。具体而言，保护措施至少包括开关元件、选择适当的隔离膜材料以及第一泄压机构。
第一泄压机构是指电池单体的内部压力或温度或其他条件达到预定阈值时致动以泄放内部压力或温度的元件或部件。该阈值设计根据设计需求不同而不同。阈值可能取决于电池单体中的正极极片、负极极片、电解液和隔离膜中一种或几种的材料。第一泄压机构可以采用诸如防爆阀、气阀、泄压阀或安全阀等的形式，并可以具体采用压敏或温敏的元件或构造，即，当电池单体的内部压力或温度或其他条件达到预定阈值时，第一泄压机构执行动作或者第一泄压机构中设有的薄弱结构被破坏，从而形成可供内部压力或温度泄放的通道。
本申请实施例中所提到的“致动”是指第一泄压机构产生动作或被激活至一定的状态，从而使得电池单体的内部压力及温度得以被泄放，从而使得电池单体的内部压力及温度得以被泄放。第一泄压机构产生的动作可以包括但不限于：第一泄压机构中的至少一部分破裂、破碎、熔化、被撕裂或者打开，等等。第一泄压机构在致动时，电池单体的内部的排放物作为排放物会从致动的部位向外排出。以此方式能够在可控压力或温度的情况下使电池单体发生泄压及泄温，从而避免潜在的更严重的事故发生。
第一泄压机构在致动时，电池单体内部的高温高压物质作为排放物会从致动的部位向外排出。以此方式能够在可控压力或温度的情况下使电池单体发生泄压及泄温，从而避免潜在的更严重的事故发生。
本申请实施例中所提到的来自电池单体的排放物包括但不限于：电解液、被溶解或分裂的正负极极片、隔离膜的碎片、反应产生的高温高压气体、火焰等等。
通常，电池单体释放的排放物在电池的箱体内蔓延，箱体设置第二泄压机构，通过第二泄压机构的致动，使得排放物从箱体的致动部位向外排出，减少电池热失控进一步恶化；但从电池喷出排放物往往会携带电池单体热失控所产生的高温的颗粒物，高温的颗粒物喷出电池，电池的排气温度过高，容易引起电池外部环境的恶化，严重影响电池使用的可靠性。其中，第一泄压机构和第二泄压机构的动作原理类似，在此不再赘述。
基于此，为了提高使用的可靠性，本申请实施例提供了一种电池，当电池内的电池单 体发生热失控后，第一泄压机构致动，电池单体产生的排放物通过第一泄压机构释放到泄压通道内并沿泄压通道运动到第二泄压机构，随着热失控的继续加剧，第二泄压机构致动，泄压通道内的排放物通过第二泄压机构释放到箱体的外部，而在此过程中，由于电池单体、电池模块、箱体和泄压通道中的至少一个设有过滤件，通过过滤件上的过滤孔可阻挡排放物中的高温的颗粒物通过，从而减少电池喷出的高温的颗粒物，有利于降低电池排气温度过高的风险，提高电池使用的可靠性。
本申请实施例公开的电池以及使用电池作为电源的用电装置，用电装置可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池1100，电池1100可以设置在车辆1000的底部或头部或尾部。电池1100可以用于车辆1000的供电，例如，电池1100可以作为车辆1000的操作电源。车辆1000还可以包括控制器1200和马达1300，控制器1200用来控制电池1100为马达1300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池1100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，作为电池1100的一种实施例，电池1100包括箱体10和电池模块20，电池模块20容纳于箱体10内。其中，箱体10用于为电池单体21提供容纳空间，箱体10可以采用多种结构。在一些实施例中，箱体10可以包括第一部分11和第二部分12，第一部分11与第二部分12相互盖合，第一部分11和第二部分12共同限定出用于容纳电池单体21的容纳空间。第二部分12可以为一端开口的空心结构，第一部分11可以为板状结构，第一部分11盖合于第二部分12的开口侧，以使第一部分11与第二部分12共同限定出容纳空间；第一部分11和第二部分12也可以是均为一侧开口的空心结构，第一部分11的开口侧盖合于第二部分12的开口侧。当然，第一部分11和第二部分12形成的箱体10可以是多种形状，比如，圆柱体、长方体等。
在另一实施例中，箱体10还可以包括顶盖13、框架14和底板15，顶盖13和底板15分别安装于框架14的上下两侧，从而限定出用于容纳电池单体的容纳空间。
在电池模块20中，电池模块20包括一个或者多个电池单体21，其中，多个电池单体21之间可串联或并联或混联，混联是指多个电池单体21中既有串联又有并联。
在一实施例中，多个电池单体21之间可直接串联或并联或混联在一起，再将多个电池单体21构成的电池模块20容纳于箱体10内；当然，多个电池模块20再串联或并联或混联形成一个整体，并容纳于箱体10内。电池1100还可以包括其他结构，例如，该电池1100还可以包括汇流部件，用于实现多个电池单体21之间的电连接。其中，每个电池单体21可以为二次电池或一次电池；还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。电池单体21可呈圆柱体、扁平体、长方体或其它形状等。
请参照图3，图3为本申请一些实施例提供的电池单体21的分解结构示意图。电池单体21是指组成电池的最小单元。如图3，电池单体21包括外壳、电极组件213以及其他的功能性部件，示例地，外壳包括端盖212和壳体211。
端盖212是指盖合于壳体211的开口处以将电池单体21的内部环境隔绝于外部环境的部件。不限地，端盖212的形状可以与壳体211的形状相适应以配合壳体211。在一实施例中，端盖212可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖212在 受挤压碰撞时就不易发生形变，使电池单体21能够具备更高的结构强度，安全性能也可以有所提高。端盖212上可以设置有如电极端子214等的功能性部件。电极端子214可以用于与电极组件213电连接，以用于输出或输入电池单体21的电能。在一些实施例中，端盖212上还可以设置有用于在电池单体21的内部压力或温度达到阈值时泄放内部压力的第一泄压机构215。端盖212的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。在一些实施例中，在端盖212的内侧还可以设置有绝缘件，绝缘件可以用于隔离壳体211内的电连接部件与端盖212，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
壳体211是用于配合端盖212以形成电池单体21的内部环境的组件，其中，形成的内部环境可以用于容纳电极组件213、电解液以及其他部件。壳体211和端盖212可以是独立的部件，可以于壳体211上设置开口，通过在开口处使端盖212盖合开口以形成电池单体21的内部环境。不限地，也可以使端盖212和壳体211一体化，在一实施例中，端盖212和壳体211可以在其他部件入壳前先形成一个共同的连接面，当需要封装壳体211的内部时，再使端盖212盖合壳体211。壳体211可以是多种形状和多种尺寸的，例如长方体形、圆柱体形、六棱柱形等。在一实施例中，壳体211的形状可以根据电极组件213的具体形状和尺寸大小来确定。壳体211的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
电极组件213是电池单体21中发生电化学反应的部件。壳体211内可以包含一个或更多个电极组件213。电极组件213包括正极、负极以及隔离件。在电池单体充放电过程中，活性离子(例如锂离子)在正极和负极之间往返嵌入和脱出。隔离件设置在正极和负极之间，可以起到防止正负极短路的作用，同时可以使活性离子通过。
在一些实施例中，正极可以为正极片，正极片可以包括正极集流体以及设置在正极集流体至少一个表面的正极活性材料。
在一些实施例中，负极可以为负极片，负极片可以包括负极集流体以及设置在负极集流体至少一个表面上的负极活性材料。
在一些实施方式中，隔离件为隔离膜。本申请对隔离膜的种类没有特别的限制，可以选用任意公知的具有良好的化学稳定性和机械稳定性的多孔结构隔离膜。
在一些实施方式中，电极组件213为卷绕结构。正极片、负极片卷绕成卷绕结构。
在一些实施方式中，电极组件213为叠片结构。
结合图4～8所示，在本申请的一个实施例中，提供一种电池1100，该电池1100包括箱体10、电池模块20和泄压通道30，电池模块20位于箱体10内，电池模块20包括至少一个电池单体21，每个电池单体21设有第一泄压机构215，箱体10具有第二泄压机构16；泄压通道30连接至少一个电池单体21的第一泄压机构215与第二泄压机构16，第一泄压机构215用于在致动的情况下将电池单体21内部产生的排放物释放到泄压通道30，泄压通道30用于将排放物引导至第二泄压机构16，第二泄压机构16用于在致动的情况下将泄压通道30的排放物释放到箱体10的外部；其中，电池单体21、电池模块20、箱体10和泄压通道30中的至少一个设有过滤件40，过滤件40设有用于阻挡排放物中的颗粒物通过的过滤孔401。
第一泄压机构215在致动情况下，能够将电池单体21热失控产生的排放物释放到电池单体21外；结合图3所示，在电池单体21的正常使用状态下，第一泄压机构215可设于电池单体21的顶部，即电池单体21的端盖212上；第一泄压机构215还可设于电池单体21的壳体211的侧壁上，第一泄压机构215还可以设于电池单体21的底部。
第二泄压机构16在致动情况下，能够将电池单体21释放到泄压通道30内的排放物释 放到箱体10外，其中，第二泄压机构16可设于箱体10的顶盖13、框架14或底板15上。
泄压通道30可以是指在第一泄压机构215致动后释放出的排放物运动到第二泄压机构16处的过程中，排放物运动的一个通道或者空间。例如图8～10所示，泄压通道30位于箱体10内，即泄压通道30可以是箱体10围设形成的容纳空间的一部分，该部分可与电池单体21共处一个空间内，可以与电池单体21所处的空间为两个单独的空间；其中，泄压通道30和电池单体21分别处于两个单独的空间，这样可将排放物与电池单体21隔开，提高电池1100的可靠性。
泄压通道30连接至少一个电池单体21的第一泄压机构215与第二泄压机构16，可以理解的是，在与泄压通道30连接的第一泄压机构215和第二泄压机构16同时致动的情况下，泄压通道30能够连通对应的第一泄压机构215和第二泄压机构16，从而使得第一泄压机构215释放的排放物能够运动到第二泄压机构16处，并能够经第二泄压机构16排出电池1100外。另外，当电池单体21的数量为一个的情况下，泄压通道30连接该电池单体21的第一泄压机构215和第二泄压机构16；当电池单体21的数量为多个的情况下，与泄压通道30连接的电池单体21的数量包括但不限于一个、两个、三个或者四个。
过滤件40可以是指设有过滤孔401的部件，过滤孔401可以是能够阻挡排放物中的颗粒物通过的孔结构。
电池单体21、电池模块20、箱体10和泄压通道30中的至少一个设有过滤件40，可以理解的是，过滤件40可设于电池单体21、电池模块20、箱体10和泄压通道30中的任一个上；过滤件40也可以设于电池单体21、电池模块20、箱体10和泄压通道30中的任两个上；过滤件40也可以设于电池单体21、电池模块20、箱体10和泄压通道30中的任三个上；电池单体21、电池模块20、箱体10和泄压通道30均设有过滤件40，其中，设于电池单体21的过滤件40能够阻挡电池单体21释放的排放物中的颗粒物进入泄压通道30，设于电池模块20的过滤件40能够阻挡电池模块20中的电池单体21释放的排放物中的颗粒物进入泄压通道30或者运动到第二泄压机构16，设于泄压通道30内的过滤件40能够阻挡电池单体21释放的排放物中的颗粒物运动到第二泄压机构16，设于箱体10的过滤件40能够阻挡泄压通道30中的颗粒物排出电池1100外，这些方式均可减少电池1100排放的高温的颗粒物。
本申请实施例的电池1100，当电池1100内的电池单体21发生热失控后，第一泄压机构215致动，电池单体21产生的排放物通过第一泄压机构215释放到泄压通道30内并沿泄压通道30运动到第二泄压机构16，随着热失控的继续加剧，第二泄压机构16致动，泄压通道30内的排放物通过第二泄压机构16释放到箱体10的外部，而在此过程中，由于电池单体21、电池模块20、箱体10和泄压通道30中的至少一个设有过滤件40，通过过滤件40上的过滤孔401可阻挡排放物中的高温的颗粒物通过，从而减少电池1100喷出的高温的颗粒物，有利于降低电池1100排气温度过高的风险，提高电池1100使用的可靠性。
在本申请的另一个实施例中，在过滤件40设于电池单体21的情况下，第一泄压机构215与过滤件40为整体化结构。
第一泄压机构215与过滤件40集成在一起形成整体化结构，其中，第一泄压机构215与过滤件40可通过螺接、卡合、焊接、粘接等方式进行连接形成整体结构。
通过采用该实施例的技术方案，第一泄压机构215与过滤件40形成整体结构，可将该整体结构一起安装于电池单体21上，组装方便简单。
在本申请的另一个实施例中，在过滤件40设于电池单体21的情况下，过滤件40与电池单体21的外壳连接。
过滤件40固定连接于电池单体21的壳体211上，其中，过滤件40可通过螺接、卡合、焊接、粘接等方式固定在壳体211上。
通过采用该实施例的技术方案，过滤件40直接连接在壳体211，连接结构简单，组装操作简单。
在本申请的另一个实施例中，在过滤件40设于箱体10的情况下，第二泄压机构16与过滤件40为整体化结构。
第二泄压机构16与过滤件40集成在一起形成整体化结构，其中，第二泄压机构16与过滤件40可通过螺接、卡合、焊接、粘接等方式进行连接形成整体结构。
通过采用该实施例的技术方案，第二泄压机构16与过滤件40形成整体结构，可将该整体结构安装于箱体10上，组装方便简单。
在本申请的另一个实施例中，结合图5和图6所示，在过滤件40设于箱体10的情况下，过滤件40与箱体10连接。
过滤件40固定连接于箱体10上，其中，过滤件40可通过螺接、卡合、焊接、粘接等方式固定在箱体10上。
通过采用该实施例的技术方案，过滤件40直接连接在箱体10，连接操作简单，方便制作。
在本申请的另一个实施例中，在过滤件40设于箱体10的情况下，箱体10的侧壁设有过滤孔401，箱体10的侧壁设有过滤孔401的部分形成过滤件40。
过滤孔401直接设在箱体10的侧壁上，使得箱体10的侧壁设有过滤孔401的部分直接作为过滤件40，其中，至少箱体10的前后左右上下侧壁中任一个设有过滤孔401。
通过采用该实施例的技术方案，箱体10的侧壁开设有过滤孔401的部分直接作为过滤件40，这样无需额外增加过滤部件，有利于简化箱体10的结构，降低制作成本。
在本申请的另一个实施例中，结合图8所示，在过滤件40设于箱体10的情况下，第二泄压机构16朝向电池模块20的侧方设有过滤件40，以阻挡电池单体21释放的颗粒物进入第二泄压机构16。
过滤件40设于第二泄压机构16朝向电池模块20的侧方，可以理解的是，过滤件40位于箱体10的内部，过滤件40不外露于箱体10，过滤件40使用可靠性更好。
通过采用该实施例的技术方案，排放物中的颗粒物先被过滤件40过滤掉后再经第二泄压机构16排出电池1100外，从而减少电池1100排放的高温的颗粒物，提高电池1100使用的可靠性；另外，颗粒物与箱体10外部环境接触的概率小，引起电池1100排气温度过高的风险小，能够更好地提高电池1100的可靠性。
在本申请的另一个实施例中，在过滤件40设于箱体10的情况下，第二泄压机构16背向电池模块20的侧方设有过滤件40，以阻挡第二泄压机构16释放的颗粒物通过。
过滤件40设于第二泄压机构16背向电池模块20的侧方，可以理解的是，过滤件40位于第二泄压机构16外露于箱体10的外部的侧方，即过滤件40外露于箱体10。
通过采用该实施例的技术方案，排放物先经第二泄压机构16后再被过滤件40过滤掉颗粒物后排到电池1100的外部，从而减少电池1100排放的颗粒物，提高电池1100使用的可靠性。
在本申请的另一个实施例中，在过滤件40设于箱体10的情况下，第二泄压机构16朝向电池模块20的侧方设有过滤件40，以阻挡电池单体21释放的颗粒物进入第二泄压机构16；第二泄压机构16背向电池模块20的侧方设有过滤件40，以阻挡第二泄压机构16释放的颗粒物通过。
通过采用该实施例的技术方案，排放物经两道过滤件40过滤，颗粒物过滤效果好，有利于减少电池1100排放的颗粒物，提高电池1100使用的可靠性。
在本申请的另一实施例中，过滤件40的所有的过滤孔401的横截面积之和为过滤面积；在第二泄压机构16朝向电池模块20的侧方设有过滤件40的情况下，位于第二泄压机构16朝向电池模块20的侧方的过滤件40为第一过滤件，第一过滤件的过滤面积大于第二泄压机构16的最大泄压面积；在第二泄压机构16背向电池模块20的侧方设有过滤件40的情况下，位于第二泄压机构16背向电池模块20的侧方的过滤件40为第二过滤件，第二过滤件的过滤面积小于第二泄压机构16的最大泄压面积。
过滤面积可以是指过滤件40上所有的过滤孔401的横截面积之和，即过滤件40上能够供排放物通过的总面积，其中，横截面积是指用垂直于过滤孔401的轴线的一个平面去截过滤孔401所得到的图形的面积。
第一过滤件可以是指位于第二泄压机构16朝向电池单体21的侧方的过滤件40，电池单体21释放的排放物经第一过滤件后再经第二泄压机构16排出，即第一过滤件和第二泄压机构16沿排放物的排放路径依次设置。
第二泄压机构16的最大泄压面积，可以是指，第二泄压机构16处于完全开启状态下，排放物通过第二泄压机构16的最大的流通面积。示例地，第二泄压机构16为防爆片，箱体10通常设有泄压孔141，防爆片遮蔽泄压孔141；当防爆片完全破损后，防爆片的破损区域的面积小于泄压孔141的横截面积时，防爆片的破损区域的面积为第二泄压机构16的最大泄压面积，或者，防爆片的破损区域的面积大于泄压孔141的横截面积时，泄压孔141的横截面积为第二泄压机构16的最大泄压面积；当防爆片与箱体10完全分离后，泄压孔141的横截面积为第二泄压机构16的最大泄压面积；第二泄压机构16为防爆阀，防爆阀的技术说明书中的最大泄压面积，即可第二泄压机构16的最大泄压面积，当防爆阀的技术说明书中未记载最大泄压面积时，第二泄压机构16的最大泄压面积可以是指防爆阀处于完全开启状态下，排放物流过防爆阀的最大的流通面积。
第二过滤件可以是指位于第二泄压机构16背向电池单体21的侧方的过滤件40，电池单体21释放的排放物经第二泄压机构16后再经第二过滤件过滤后排出，即第二泄压机构16和第二过滤件沿排放物的排放路径依次设置。
第一过滤件的过滤面积大于第二泄压机构16的最大泄压面积，可以理解的是，排放物依次流经第一过滤件和第二泄压机构16过程中，排放物的流通面积依次减小，可达到逐级泄压的效果，有利于提高排放物的排放效果，提高电池1100的使用可靠性。
第二过滤件的过滤面积小于第二泄压机构16的最大泄压面积，可以理解的是，排放物依次流经第二泄压机构16和第二过滤件过程中，排放物的流通面积依次减小，可达到逐级泄压的效果，有利于提高排放物的排放效果，提高电池1100的使用可靠性。
通过采用该实施例的技术方案，排放物的流通面积沿排放路径减小，可达到逐级泄压的效果，有利于提高排放物的排放效果，提高电池1100的使用可靠性；另外，流通面积逐步减小，也有利于减少设计冗余，有利于降低制作成本。
在本申请的另一实施例中，在第二泄压机构16朝向电池模块20的侧方设有第一过滤件的情况下，第一过滤件的数量为多个，多个第一过滤件沿电池单体21释放出来的排放物的排放路径依次排布，多个第一过滤件的过滤面积沿排放物的排放路径减小；在第二泄压机构16背向泄压通道30的侧方设有第二过滤件的情况下，第二过滤件的数量为多个，多个第二过滤件沿第二泄压机构16释放的排放物的排放路径依次排布，多个第二过滤件的过滤面积沿排放物的排放路径减小。
第二泄压机构16朝向电池模块20的侧方设有多个第一过滤件，多个第一过滤件沿排放物的排放路径依次设置，其中，排放路径可以是指排放物在泄压通道30内的流动路径，使得电池单体21释放的排放物能够依次经过各第一过滤件后再经第二泄压机构16排出，这样排放物经过多层过滤后排出，有利于减少电池1100排出的颗粒物数量，提高电池1100的使用可靠性；另外，多个第一过滤件的过滤面积沿排放物的排放路径减小，可以理解的是，第一过滤件的过滤面积沿排放物的排放路径可以是越来越小，也可以是阶梯式减小，即存在相邻两个第一过滤件的过滤面积相同的情况。排放物经过过滤面积越来越小的第一过滤件后流到第二泄压机构16，这样排放物的流通面积越来越小，可实现排放物的多级泄压，排放物的排放效果好，有利于提高电池1100的使用可靠性。
第二泄压机构16背向电池模块20的侧方设有多个第二过滤件，多个第二过滤件沿排放物的排放路径依次设置，这样第二泄压机构16释放的排放物依次经过各第一过滤件后排出电池1100外，这样排放物经过多层过滤后排出，有利于减少电池1100排出的颗粒物数量，提高电池1100的使用可靠性；另外，多个第二过滤件的过滤面积沿排放物的排放路径减小，可以理解的是，第二过滤件的过滤面积沿排放物的排放路径可以是越来越小，也可以是阶梯式减小，即存在相邻两个第二过滤件的过滤面积相同的情况。排放物经过过滤面积越来越小的第二过滤件后排出电池1100外，这样排放物的流通面积越来越小，可实现排放物的多级泄压，排放物的排放效果好，有利于提高电池1100的使用可靠性。
通过采用该实施例的技术方案，可实现排放物的多级过滤，有利于减少颗粒物的排放数量，同时，还可实现排放物的多级泄压，排放物的排放效果好，有利于提高电池1100的使用可靠性。
在本申请的另一实施例中，在第二泄压机构16朝向电池模块20的侧方设有多个第一过滤件的情况下，多个第一过滤件的过滤孔401的孔径沿排放物的排放路径减小；在第二泄压机构16背向泄压通道30的侧方设有多个第二过滤件的情况下，多个第二过滤件的过滤孔401的孔径沿排放物的排放路径减小。
过滤孔401的孔径可以是指过滤孔401的径向尺寸，示例地，过滤孔401为圆孔，孔径是指圆孔的直径。
通常过滤孔401的孔径越大，能够通过过滤孔401的颗粒物的尺寸也就越大，过滤孔401的孔径越小，能够通过过滤孔401的颗粒物的尺寸也就越小。
多个第一过滤件的过滤孔401的孔径沿排放物的排放路径减小，可以理解的是，排放物先通过孔径较大的第一过滤件，后通过孔径较小的第一过滤件，这样可先将排放物中的大颗粒物过滤掉，再将排放物中的小颗粒过滤掉，这样逐级过滤有利于降低过滤件40堵塞的风险，减少泄压不畅的风险，有利于提高电池1100的使用可靠性。
多个第二过滤件40的过滤孔401的孔径沿排放物的排放路径减小，可以理解的是，排放物先通过孔径较大的第二过滤件40，后通过孔径较小的第二过滤件40，这样可先将排放 物中的大颗粒物过滤掉，再将排放物中的小颗粒过滤掉，这样逐级过滤有利于降低过滤件40堵塞的概率，减少泄压不畅的风险，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图10所示，过滤件40与第二泄压机构16间隔设置。
过滤件40与第二泄压机构16间隔设置，可以理解的是，第二泄压机构16与过滤件40之间存在一定的空间，该空间可用于给第二泄压机构16致动提供动作空间，减少干涉风险。空间大小可根据第二泄压机构16的动作空间进行设定，在此不作限定。
通过采用该实施例的技术方案，可减少第二泄压机构16和过滤件40相干涉的风险。
在本申请的另一个实施例中，结合图5和图6所示，过滤件40包括板部41以及环设于板部41周围的环壁部42，环壁部42的一端与板部41连接，环壁部42的另一端与箱体10连接，环壁部42环设于第二泄压机构16的周围，环壁部42和板部41中的至少一个设有过滤孔401。
结合图5和图6所示，过滤件40呈方筒状，板部41可以是指过滤件40的筒底部分，环壁部42可以是指过滤件40的筒侧壁部72分，其中，环壁部42的形状可以是多种，例如圆形、方形、椭圆形等。环壁部42环设于第二泄压机构16的周围，使得过滤件40罩设于第二泄压机构16，从而过滤掉排放物中的颗粒物。
环壁部42和板部41中至少一个设有过滤孔401，可以理解的是，环壁部42设有过滤孔401，或者，板部41设有过滤孔401，或者，环壁部42和板部41均设有过滤孔401，这样通过过滤孔401阻挡排放物中的颗粒物通过，从而实现过滤。
通过采用该实施例的技术方案，过滤件40的结构简单，加工制作简单。
在本申请的另一个实施例中，结合图23～25所示，过滤件40具有第一过滤部43和第二过滤部44，第一过滤部43和第二过滤部44均设有多个过滤孔401，至少一个电池单体21的第一泄压机构215和第二泄压机构16之间形成有第一排放路径N’和第二排放路径N，第一排放路径N’经第一过滤部43的过滤孔401，第二排放路径N经第二过滤部44的过滤孔401；在第一排放路径N’的长度大于第二排放路径N的长度情况下，第一过滤部43的过滤孔401的孔径大于第二过滤部44的过滤孔401的孔径。
过滤件40开设有多个过滤孔401，多个过滤孔401的孔径是不一样的，大孔径的过滤孔401所在的区域可为第一过滤部43，小孔径的过滤孔401所在的区域可为第二过滤部44，而电池单体21热失控后，电池单体21释放的排放物流入泄压通道30，并沿泄压通道30运动到电池1100外，而在过程中，排放物会有多条排放路径流到第二泄压机构16，其中，流经第一过滤部43的过滤孔401的排放路径为第一排放路径N’，流经第二过滤部44的排放路径为第二排放路径N，且第一排放路径N’的长度大于第二排放路径N的长度，这样经第一排放路径N’的流动的排放物流动时间长，排放物中的小颗粒降温时间长，降温效果好，颗粒物的出箱温度低，排出电池1100外不容易环境恶化；同理，经第二排放路径N流动的排放物流动时间短，排放物中的小颗粒降温时间短，颗粒物的出箱温度高，排出电池1100外容易引起环境恶化；另外，针对排放物中的大颗粒，大颗粒相对于小颗粒而言，经过较长排放路径的降温后，其温度可能降低不明显，大颗粒排放到电池1100外部，依然可能够引起电池1100排气温度过高的问题。
通过采用该实施例的技术方案，第一过滤部43的过滤孔401的孔径大于第二过滤部44的过滤孔401的孔径，这样沿长排放路径流动的排放物中的低温小颗粒物会直接通过第一过滤部43的过滤孔401排放到电池1100外，同时，第一过滤部43的过滤孔401也会将 排放物中的温度较高的大颗粒阻挡；并且，而沿短排放路径流动的排放物中的温度高的大小颗粒物均会被第二过滤部44的过滤孔401阻挡，不会排放到电池1100外，这样便可减少引起电池1100排气温度过高的风险，提高电池1100的使用可靠性；另外，通过大小过滤孔401的配合设计，排放物可快速地排出电池1100外，减少箱体10内部憋压的风险。
在本申请的另一个实施例中，结合图5和图6所示，过滤孔401的数量为多个，任意两个过滤孔401的孔径相同。
任意两个过滤孔401的孔径相同，可以理解的是，所有的过滤孔401的孔径相同。
通过采用该实施例的技术方案，所有过滤孔401的孔径相同，过滤件40的结构简单，可方便加工制作。
在本申请的另一个实施例中，结合图24所示，过滤孔401的数量为多个，至少两个过滤孔401的孔径不同。
至少两个过滤孔401的孔径不同，可以理解的是，过滤孔401的孔径有大有小，不是全部相同。
通过采用该实施例的技术方案，过滤孔401的孔径大小可灵活设计，从而满足排放物的排放需求，使得电池1100的使用可靠性更好。
在本申请的另一个实施例中，结合图7～13所示，泄压通道30还包括用于与第二泄压机构16连接的第一子泄压通道31，电池1100还包括分隔件50，分隔件50用于隔开电池模块20与第一子泄压通道31，分隔件50设有多个第一可通气结构51，每个第一可通气结构51连接至少一个电池单体21的第一泄压机构215和第一子泄压通道31。
第一子泄压通道31可以是指能够与第二泄压机构16连接的通道，电池单体21释放的排放物进入第一子泄压通道31后，能够沿第一子泄压机构运动到第二泄压机构16处。
分隔件50可以是指能够将电池模块20和第一子泄压通道31隔开的部件。在一些实施例中，分隔件50可以为隔板或者其他能起到分隔电池模块20和第一子泄压通道31的结构。
第一可通气结构51可以是指能够连接第一子泄压通道31和第一泄压机构215的通气结构，第一泄压机构215释放的排放物能够经第一可通气结构51进入第一子泄压通道31。其中，第一可通气结构51可为通孔、通气阀等。但并不限于此，在一些实施例中，第一可通气结构51可以为设置于分隔件50上的薄弱区，在第一泄压机构215致动时，薄弱区可被破坏进而使得第一泄压机构215与第一子泄压通道31连通。
每个第一可通气结构51连接至少一个电池单体21的第一泄压机构215和第一子泄压通道31；可以理解的是，在电池单体21的数量为一个的情况下，第一可通气结构51连接该电池单体21的第一泄压机构215和第一子泄压通道31；在电池单体21的数量为多个的情况下，与第一可通气结构51连接的电池单体21的数量包括但不限于一个、两个、三个或四个。
通过采用该实施例的技术方案，电池模块20中的电池单体21热失控后，该电池单体21的第一泄压机构215释放的排放物经第一可通气结构51进入第一泄压通道30，而第一泄压通道30与电池模块20之间通过分隔件50隔开，这样可减少第一泄压通道30内的排放物与电池模块20中的其他电池单体21的接触风险，减少热失控蔓延风险，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图13所示，泄压通道30包括至少两个第一子泄压通道31，每个第一子泄压通道31连接不同的电池单体21所对应的第一可通气结构51，第一子泄压通道31间通过间隔元件60隔开。
第一子泄压通道31的数量包括但不限于两个、三个、四个或者五个，每个第一子泄压通道31连接不同的电池单体21的第一泄压机构215，这样不同的电池单体21可通过不同的第一子泄压通道31与第二泄压机构16连接；间隔元件60可以是指位于相邻两个第一子 泄压通道31之间并将相邻两个第一子泄压通道31隔开的部件，从而使得相邻两个第一子泄压通道31是两个独立的通道。
通过采用该实施例的技术方案，当其中一个电池单体21发生热失控的情况下，该电池单体21释放的排放物进入与该电池单体21连接的第一子泄压通道31内，且第一子泄压通道31间通过间隔元件60隔开，这样排放物不会直接进入其他第一子泄压通道31，有利于减少热失控蔓延的风险。
在本申请的另一个实施例中，结合图8～11所示，泄压通道30还包括连通通道32，分隔件50的壁面和箱体10的内壁面围设形成连通通道32，每个第一子泄压通道31通过连通通道32与第二泄压机构16相连接。
连通通道32可以是指位于分隔件50的壁面与箱体10的内壁面之间的间隙空间，且该间隙空间能够连接每个第一子泄压通道31和第二泄压机构16，这样每个第一子泄压通道31流出的排放物可通过连通通道32运动到第二泄压机构16处，实现电池1100的泄压排放。
通过采用该实施例的技术方案，连接通道采用分隔件50的壁面与箱体10的内壁面围设形成连通通道32，结构简单，方便加工制作。
在本申请的另一个实施例中，结合图4、图8和图13所示，电池模块20包括至少一列电池单体21，每列电池单体21包括至少一个电池单体21，每列电池单体21对应设置有至少一个第一子泄压通道31，每个第一子泄压通道31沿对应的一列电池单体21的排布方向延伸；每列电池单体21所对应的每个第一可通气结构51均与对应的第一子泄压通道31连接。
电池模块20内的电池单体21呈矩阵排列，电池模块20包括至少一列电池单体21，即电池模块20内的电池单体21的列数包括但不限于为一个、两个、三个、四个或五个；与每列电池单体21对应设置的第一子泄压通道31的数量可以是一个、两个、三个、四个或五个，且每列电池单体21的第一泄压机构215均能够与对应的第一子泄压通道31连通，这样当电池单体21热失控释放的排放物会经第一可通气结构51进入对应的第一子泄压通道31流到第二泄压机构16处，最终经第二泄压机构16排出箱体10外；示例地，电池单体21的列数与第一子泄压通道31的数量相同，且每一列第一泄压机构215对应一个第一子泄压通道31，该第一子泄压通道31沿对应列中的电池单体21的排列方向延伸并与对应列中每个电池单体21的第一泄压机构215连接，这样电池单体21热失控释放的排放物会进入对应的第一子泄压通道31排出。
通过采用该实施例的技术方案，电池单体21发生热失控的情况下，该电池单体21释放的排放物会进入对应的第一子泄压通道31排出，排放物不会进入其他第一子泄压通道31与其他电池单体21接触，减少热失控蔓延的风险，提高电池单体21的可靠性。
在本申请的另一个实施例中，结合图8所示，第二泄压机构16位于电池模块20沿第一子泄压通道31的延伸方向(X方向)的端部的侧方。
第二泄压机构16安装于箱体10并位于电池模块20沿第一子泄压通道31的延伸方向(X方向)的端部的侧方，即第二泄压机构16位于第一子泄压通道31的端部出口的侧方，这样第一子泄压通道31内的排放物从第一子泄压通道31的端部开口排出后，可直接从第二泄压机构16排出电池1100外。
通过采用该实施例的技术方案，电池单体21热失控后，第一子泄压通道31内的排放物可快速地排放到第二泄压机构16处，电池1100泄压排气效果好。
在本申请的另一个实施例中，结合图13所示，连通通道32为环形通道33，环形通道33环设于分隔件50的周围。
连通通道32呈环形且环设于分隔件50的周围。
通过采用该实施例的技术方案，从第一子泄压通道31排放出的排放物会进入环形通道33并沿环形通道33流动，这样可延长排放物的排放路径，从而延长排放物中的颗粒物降 温时长，颗粒物排出电池1100外引起电池1100排气温度过高的风险小。
在本申请的另一个实施例中，结合图14～16所示，至少一列电池单体21的两端设有端板22，端板22插入环形通道33并与箱体10的内壁面连接；泄压通道30还包括第二子泄压通道34，第二子泄压通道34与第一子泄压通道31相交，第二子泄压通道34用于连通对应的第一子泄压通道31和环形通道33。
端板22可以是指用于固定对应列电池单体21并位于对应列电池单体21端部的部件，端板22与电池单体21之间可通过螺接、卡接或者粘接等方式进行连接。
端板22插入环形通道33并与箱体10的内壁面密封连接，可以理解的是，端板22与箱体10的内壁面之间可形成密封结构，端板22与箱体10的壁面可通过焊接、密封胶、密封圈等密封形式密封结构；该密封结构将第一子泄压通道31与第二泄压机构16隔开，这样第一子泄压通道31内的排放物不能直接运动到第二泄压机构16处；而泄压通道30还包括第二子泄压通道34，第二子泄压通道34可以是指与第一子泄压通道31相交的通道，这样第二子泄压通道34可延伸到第一子泄压通道31的侧方，从而将第一子泄压机构与环形通道33连通，这样第一子泄压通道31内的排放物会经第二子泄压通道34流入环形通道33，最终流到第二泄压机构16处，从而排出箱体10外。
通过采用该实施例的技术方案，电池单体21释放的排放物需经第一子泄压通道31、第二子泄压通道34和环形通道33后流到第二泄压机构16处，最终排出电池1100外，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于降低电池1100排气温度过高的风险。
在本申请的另一个实施例中，结合图14～16所示，每列电池单体21的两端均设有端板22，每个第一子泄压通道31与第二子泄压通道34连通。
每列电池单体21两端的端板22均插入环形通道33并与箱体10的内壁面密封连接，这样端板22与箱体10的内壁面连接并形成密封结构，这样每个第一子泄压通道31排放的排放物可经第二子泄压通道34排到环形通道33。另外，在电池模块20中，位于同一端至少部分的端板22可以为但不限于通过螺栓连接、粘接、卡接、铆接、焊接、一体成型方式等连接为一个整体结构，这样电池模块20中的电池单体21连接更为紧密。其中，一体成型是指利用挤压、注塑、压铸等一体工艺制作成型。
通过采用该实施例的技术方案，电池单体21中任意一个电池单体21发生热失控，其释放的排放物均通过对应的第一子泄压通道31和第二子泄压通道34流入环形通道33内，再经环形通道33流动第二泄压机构16，再经第二泄压机构16释放到电池1100的外部，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图14～16所示，泄压通道30包括多个第二子泄压通道34，第二子泄压通道34间通过间隔元件60隔开。
多个第二子泄压通道34，可以理解的是，第二子泄压通道34的数量包括但不限于两个、三个或者四个。相邻两个第二子泄压机构之间通过间隔元件60隔开，可以理解的是，相邻两个第二子泄压通道34之间不直接连通；另外，间隔元件60同时隔开相邻两个第一子泄压通道31和相邻两个第二子泄压通道34，整个电池1100的结构紧凑性好。
通过采用该实施例的技术方案，多个第二子泄压通道34的设计，使得第一子泄压机构内的排放物可经多个第二子泄压通道34内排放，有利于排放物的快速排出，减少箱体10内部憋压、温度过高等风险，提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图14～16所示，多个第二子泄压通道34沿第一子泄压通道31的延伸方向(X方向)间隔排布。
第一子泄压通道31的延伸方向，可以理解的是，可以是指一列电池单体21中的电池单体21的排布方向(X方向)。
通过采用该实施例的技术方案，在第一子泄压通道31的延伸方向(X方向)排布的电池单体21，可通过与之对应的第二子泄压通道34快速将电池单体21的释放的排放物排入 环形通道33内，最终经第二泄压机构16释放到箱体10的外部，从而减少箱体10内部憋压、温度过高等风险，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图14～16所示，第一子泄压通道31和第二子泄压通道34垂直。
第一子泄压通道31和第二子泄压通道34垂直，可以理解的是，第一子泄压通道31和第二子泄压通道34纵横排列；示例地，间隔元件60呈矩阵排列，相邻两列间隔元件60间形成第一子泄压通道31，相邻两行间隔元件60间形成第二子泄压通道34。
通过采用该实施例的技术方案，第一子泄压通道31和第二子泄压通道34分布规整，方便加工制作。
在本申请的另一个实施例中，结合图17～21所示，环形通道33设有与箱体10连接的环形件70，环形件70用于将环形通道33分隔为第一子环形通道331和第二子环形通道332，第二子环形通道332环设于第一子环形通道331的周围；环形件70开设有用于连通第一子环形通道331和第二子环形通道332的第二可通气结构71，第二子环形通道332与第二泄压机构16连接，第一子环形通道331与第一子泄压通道31连通。
环形件70可以是指位于环形通道33内并沿环形通道33的周向延伸的环形部件，且环形件70与箱体10连接，箱体10作为环形件70的安装基体；同时，环形件70能够将环形通道33分隔为第一子环形通道331和第二子环形通道332，其中，位于第一子环形通道331位于第二子环形通道332的内侧，即第二子环形通道332环设于第一子环形通道331的周围。环形件70的形状与环形通道33的形状相适配；环形件70的形状可以是多种，例如圆形、三角形、椭圆形、四边形等。
第二可通气结构71可以是指能够连通第一子环形通道331和第二环形子通道的结构，其中，第二可通气结构71可为通孔、通气阀、泄压阀等结构。
第二子环形通道332与第二泄压机构16连接，第一子环形通道331与第一子泄压通道31连通，可以理解的是，在第二泄压机构16致动的情况下，电池单体21释放的排放先进入第一子环形通道331后，再经第二可通气结构71进入第二子环形通道332，最后再经第二泄压机构16释放到箱体10的外部。
通过采用该实施例的技术方案，电池单体21释放的排放物需将第一子环形通道331和第二子环形通道332，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于减少电池1100排气温度过高的风险，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图20和图21所示，第二可通气结构71为通孔。
通孔可以是指贯穿环形件70的孔结构。
通过该实施例的技术方案，第二可通气结构71为通孔，结构简单，方便加工制作。
在本申请的另一个实施例中，结合图23和图24所示，环形件70包括至少三个依次首尾连接的侧壁部72，靠近第二泄压机构16的侧壁部72设有第二可通气结构71。
环形件70沿其周向可分为多段，侧壁部72可以是指环形件70的一段，例如图18所示，环形件70呈长方形，侧壁部72是指环形件70的一个边。
靠近第二泄压机构16的侧壁部72可以是指与第二泄压机构16距离最近的侧壁部72。
通过采用该实施例的技术方案，第二可通气结构71与第二泄压机构16的距离近，经第二可通气结构71的排放物可快速地运动到第二泄压机构16，再经第二泄压机构16排出，有利于箱体10内部憋压等风险，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图23和图24所示，在过滤件40设于箱体10的情况下，靠近第二泄压机构16的侧壁部72为过滤件40，过滤孔401为第二可通气结构71。
通过采用该实施例的技术方案，直接在靠近第二泄压机构16的侧壁部72开设过滤孔401，即可实现排放物的过滤，也可以实现第一子环形通道331和第二子环形通道332的连通，环形件70和过滤件40集成，其结构简单，方便加工制作。
在本申请的另一个实施例中，结合图18～21所示，环形件70包括至少三个依次首尾连 接的侧壁部72，远离第二泄压机构16的侧壁部72设有第二可通气结构71。
远离第二泄压机构16的侧壁部72，可以是指，除去与第二泄压机构16距离最近的侧壁部72以外的侧壁部72。
通过采用该实施例的技术方案，由于第二可通气结构71与第二泄压机构16之间距离较远，因此，经过第二可通气结构71的排放物需要运动一定距离才能流到第二泄压机构16处，从而排出箱体10，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于降低电池1100排气温度过高的风险，提高电池1100的使用可靠性。
在本申请的另一个实施例中，结合图18～21所示，靠近第二泄压机构16的侧壁部72为第一侧壁部73，与第一侧壁部73相邻的侧壁部72和与第一侧壁部73相对的侧壁部72中的至少一个设有第二可通气结构71。
第一侧壁部73可以是指距离第二泄压机构16最近的侧壁部72。
与第一侧壁部73相邻或相对的侧壁部72可以称为远离第二泄压机构16的侧壁部72。
与第一侧壁部73相邻的侧壁部72和与第一侧壁部73相对的侧壁部72中的至少一个设有第二可通气结构71，可以理解的是，与第一侧壁部73相邻的侧壁部72设有第二可通气结构71，或者，与第一侧壁部73相对的侧壁部72设有第二可通气结构71，或者，与第一侧壁部73相邻的侧壁部72以及与第一侧壁部73相对的侧壁部72均设有第二可通气结构71。
通过采用该实施例的技术方案，第二可通气结构71远离第二泄压机构16设计，这样可延长排放物的排放路径，排放物中的颗粒物的降温时间长，有利于降低电池1100排气温度过高的风险。
在本申请的另一个实施例中，结合图18～21所示，第二可通气结构71位于对应的侧壁部72的中部。
第二可通气结构71位于对应的侧壁部72的中部，可以理解的是，第二可通气结构71位于对应的侧壁部72的中间位置。
通过采用该实施例的技术方案，第二可通气结构71位于侧壁部72的中部，这样位于两端的电池单体21到第二可通气结构71的距离均不会太远，这样位于端部的电池单体21释放的排放物也能够快速地排出，有利于提高电池1100的使用可靠性。
在本申请的另一个实施例中，在过滤件40设于箱体10的情况下，远离第二泄压机构16的侧壁部72为过滤件40，过滤孔401为第二可通气结构71。
通过采用该实施例的技术方案，直接在远离第二泄压机构16的侧壁部72开设过滤孔401，即可实现排放物的过滤，也可以实现第一子环形通道331和第二子环形通道332的连通，环形件70和过滤件40集成，其结构简单，方便加工制作。
在本申请的另一个实施例中，结合图18～21所示，在过滤件40设于箱体10的情况下，过滤件40盖设于第二可通气结构71。
过滤件40盖设在第二可通气结构71，可以理解的是，过滤件40能够覆盖在第二可通气结构71，其中，过滤件40位于第二可通气结构71朝向第一子环形通道331的侧方，这样第一子环形通道331的排放物先经过滤件40过滤后，再经第二可通气结构71进入第二子环形通道332；或者，过滤件40位于第二可通气结构71背向第一子环形通道331的侧方，这样第一子环形通道331的排放物先经第二可通气结构71再经过滤件40过滤后进入第二子环形通道332；或者，第二可通气结构71朝向第一子环形通道331的侧方和背向第一子环形通道331的侧方均设有过滤件40，这样可实现双重过滤，过滤效果更好，电池1100的使用可靠性更好。
通过采用该实施例的技术方案，过滤件40盖设在第二可通气结构71处，其结构简单，方便加工制作。
在本申请的另一个实施例中，结合图23～25所示，过滤件40位于电池模块20和第二泄压机构16之间；过滤件40具有第一过滤部43和第二过滤部44，第一过滤部43和第二 过滤部44均设有多个过滤孔401，最靠近第二泄压机构16的电池单体21的第一泄压机构215和第二泄压机构16之间形成有第一排放路径N’和第二排放路径N，第一排放路径N’经第一过滤部43的过滤孔401，第二排放路径N经第二过滤部44的过滤孔401；在第一排放路径N’的长度大于第二排放路径N的长度的情况下，第一过滤部43的过滤孔401的孔径大于第二过滤部44的过滤孔401的孔径。
最靠近第二泄压机构16的电池单体21，可以是指靠近第二泄压机构16并位于电池模块20端部的电池单体21。
结合图25所示，过滤件40位于电池模块20和第二泄压机构16之间，可以理解的是，而电池模块20呈阵列排放，过滤件40和第二泄压机构16位于电池模块20沿电池单体21的列方向(X方向)分布的端部的侧方，且过滤件40位于第二泄压机构16与电池模块20之间；这样电池模块20内的任一个电池单体21释放的排放物经过第一过滤部43的过滤孔401的第一排放路径N’的长度，均会大于该电池单体21释放的排放物经过第二过滤部44的过滤孔401的第二排放路径N的长度，那么在设计时可根据最靠近第二泄压机构16的电池单体21即可得到判断出第一过滤部43和第二过滤部44的位置，这样便可保证所有的电池单体21释放的排放物经过第一过滤部43的过滤孔401的第一排放路径N’的长度均会大于经过第二过滤部44的过滤孔401的第二排放路径N的长度。
通过采用该实施例的技术方案，第一过滤部43的过滤孔401的孔径大于第二过滤部44的过滤孔401的孔径，这样沿长排放路径流动的排放物中的低温小颗粒物会直接通过第一过滤部43的过滤孔401排放到电池1100外，同时，第一过滤部43的过滤孔401也会将排放物中的温度较高的大颗粒阻挡；并且，而沿短排放路径流动的排放物中的温度高的大小颗粒物均会被第二过滤部44的过滤孔401阻挡，不会排放到电池1100外，这样便可减少引起电池1100排气温度过高的风险，提高电池1100的使用可靠性；另外，通过大小过滤孔401的配合设计，排放物可快速地排出电池1100外，减少箱体10内部憋压的风险。
在本申请的另一个实施例中，结合图9所示，箱体10还包括底板15，分隔件50通过间隔元件60支撑于底板15上，电池模块20位于分隔件50的上方，第一泄压机构215位于电池单体21的底部。
在电池1100的使用状态下，底板15可以是指箱体10底部的板件，分隔件50通过间隔元件60支撑底板15上，分隔件50通过间隔元件60将分隔件50支起，使得分隔件50与底板15之间存在间隙，从而方便分隔件50和底板15之间构建第一子泄压通道31。
通过采用该实施例的技术方案，第一泄压机构215位于电池单体21的底部，同时，电池模块20与第一子泄压机构通过分隔件50隔开，这样第一泄压机构215释放的排放物难以与电池单体21顶部的电气部件接触，减少电池单体21的损坏风险，有利于提高电池1100的使用可靠性。
在另一实施例中，结合图28和图35所示，第一泄压机构215也可以位于电池单体21的侧部，或者，第一泄压机构215位于电池单体21的顶部，然后根据第一泄压机构215的位置对应设计分隔件50、间隔元件60、第一子泄压通道31和第二子泄压通道34，其具体可根据实际需要进行设计。
在本申请的另一个实施例中，分隔件50为热管理部件，热管理部件用于与电池模块20进行换热。
热管理部件可以是指与电池单体21进行换热的部件，例如液冷板等部件。
通过该实施例的技术方案，分隔件50直接为热管理部件，这样无需增加额外的部件，有利于减少电池1100的零部件数量，方便加工制作。
在本申请的另一个实施例中，请一并结合图13所示，孔径最大的过滤孔401的横截面积为S，至少一个电池单体21的第一泄压机构215和第二泄压机构16之间的最短排放路 径为L，则，其中，L的单位为m，S的单位为mm2。
孔径最大的过滤孔401的横截面积，可以理解的是，在过滤孔401中，孔径最大的过滤孔401的横截面积。
至少一个电池单体21的第一泄压机构215和第二泄压机构16之间的最短排放路径为L，可以理解的是，电池单体21的第一泄压机构215释放的排放物流动第二泄压机构16的多条排放路径中，最短的排放路径的长度为L。
在一般情况下，电池单体21热失控，电池单体21的最短排放路径的长度L越大，排放物中的颗粒物能获得更长的降温时间，颗粒物的出箱温度低，对过滤件40的过滤功能要求也就越低，过滤件40的孔径最大的过滤孔401的横截面积也就可以设计的更大。
通过采用该实施例的技术方案，通过的设定，使得过滤件40的孔径最大的过滤孔401的横截面积与电池单体21的最短排放路径具有合理的设计，减少电池1100排气温度过高的风险，有利于提升电池1100的使用可靠性；在满足的设定下，在电池单体21的最短排放路径长度一定的情况下，孔径最大的过滤孔401的横截面积不会设计的过小，可使得过滤孔401能够让颗粒物顺利快速地通过，从而减少因过滤件40堵塞、泄压不及时等而出现箱体10损坏严重的风险；在满足的设定下，在电池单体21的最短排放路径一定的情况下，孔径最大的过滤孔401的横截面积不会设计的过大，可使得过滤孔401能够将温度较高的颗粒物拦下，从而减少因大量火星喷出点燃外部烟气导致电池外部环境恶化的风险。
结合图26所示，在电池1100的使用状态下，通常电池单体21的第一泄压机构215可位于电池单体21的顶部、侧部和底部。示例地，结合图26a)、图26b)和图26e)所示，在第一泄压机构215位于电池单体21的顶部的情况下，电池单体21的正电极端子214a和负电极端子214b可位于电池单体21的顶部，也可以位于电池单体21的同一侧部，还可以分别位于电池单体21的相对两侧部。结合图26c)所示，在第一泄压机构215位于电池单体21的侧部的情况下，电池单体21的正电极端子214a和负电极端子214b中的一个与第一泄压机构215位于电池单体21的同一侧，另一个位于电池单体21与第一泄压机构215相对的另一侧部；结合图26d)所示，在第一泄压机构215位于电池单体21的底部时，电池单体21的正电极端子214a和负电极端子214b可位于电池单体21的顶部。
在不同类型的电池单体21安装在箱体10内时，电池单体21的最短排放路径是不同，以下结合一些具体实施例对电池单体21的第一泄压机构215与第二泄压机构16之间的最短路径进行说明。
在一具体实施例中，结合图27～29所示，箱体10包括顶盖13、框架14和底板15，顶盖13和底板15分别盖设在框架14的上下两侧以围设形成供电池单体21容纳的容纳空间，框架14为长方形框架，电池模块20包括一列电池单体21，该列电池单体21沿箱体10的长度方向(X方向)排列，两个第二泄压机构16前后设置于箱体10框架14的左壁，每个电池单体21的顶部均设有第一泄压机构215，电池单体21的顶面与顶盖13之间形成第一排气通道101，电池模块20的周壁与框架14的内周壁围设形成环形通道33；第一泄压机构215释放的排放物经第一排气通道101流入环形通道33，再经环形通道33运动到第二泄压机构16。
为了方便说明，选取最左侧的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图28中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。该电池单体21的第一泄压机构215将排放物排出后，排放物倾斜向左运动到位于前侧的第二泄压机构16 的排放路径为第三排放路径S，排放物向左运动到位于后侧的第二泄压机构16的排放路径为第四排放路径S’，排放物向前运动到位于前侧的第二泄压机构16的排放路径为第五排放路径S”。第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，其中，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在电池单体21的顶面上的投影点为第一投影点，第二泄压机构16的中心在电池单体21的顶面上的投影点为第二投影点，第一投影点和第二投影点的连线为第一连线，第一泄压机构215的周缘在电池单体21的顶面上的投影线为第一投影线，第一连线与第一投影线的交点为第一交点，第一连线与该电池单体21的左侧面的交点为第二交点，第一交点与第一泄压机构215的中心之间的距离为L1，第一交点和第二交点之间的距离为L2，第二交点与第二泄压机构16的中心之间的距离为L3，其中，L＝L1+L2+L3。
在一具体实施例中，结合图30～32所示，该实施例与上一实施例不同之处在于：第二泄压机构16的数量为一个，第二泄压机构16位于框架14的右壁，电池单体21的顶部与顶盖13之间设有围挡件80，围挡件80围设一列电池单体21的第一泄压机构215外，围挡件80呈U型，围挡件80的开口朝右，第一泄压机构215释放的排放物沿围挡件80围设的通道再经围挡件80的开口流入环形通道33，再经环形通道33流到第二泄压机构16。
为了方便说明，选取最左侧的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图31中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的两种排放路径示意图。该电池单体21的第一泄压机构215释放的排放物从围挡件80的开口排出后，向前排放的排放路径为第三排放路径S；排放物从开口排出后，向后排放的排放路径为第四排放路径S’；第三排放路径S的长度小于第四排放路径S’的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在电池单体21的顶面上的投影点为第一投影点，第二泄压机构16的中心在电池单体21的顶面上的投影点为第二投影点，第一泄压机构215的周缘在电池单体21的顶面上的投影线为第一投影线，围挡件80的前框条的左壁面与电池单体21的顶面的交线为第一交线，第一交线的后端点和第一投影点的连线为第二连线，第一投影线与第二连线的交点为第三交点；第一交线的前端点和第二投影点的连线为第三连线，第三连线与最右侧的电池单体21的右侧面的交点为第四交点；第一泄压机构215的中心与第三交点的距离为L4，第三交点与第一交线的后端点之间的间距为L5，第一交线的长度为L6，第四交点与第一交线的前端点之间的间距为L7，第二泄压机构16的中心与第四交点之间的间距为L8，其中，L＝L4+L5+L6+L7+L8。
在一具体实施例中，请一并结合图33所示，该实施例与上一实施例不同之处在于：电池模块20包括前后分布的两列电池单体21，每列电池单体21沿箱体10的长度方向(X方向)排布，两列电池单体21沿箱体10的宽度方向(Y方向)排布，两列电池单体21分为前后左右四个区域，每个区域均对应设有一个围挡件80，框架14的左右两侧均设有第二泄压机构16；每个围挡件80的后壁开设有开口，相邻两个围挡件80之间间隔设置有形成有第二排气通道102，电池单体21热失控释放的排放物经对应的围挡件80的开口流入第二排气通道102，再经第二排气通道102流入环形通道33，最终流到第二泄压机构16处。
为了方便说明，选取最左侧且靠前设置的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图33中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。排放物从左前侧的围挡件80的开口排出后，再向左排放到位于左侧的第二泄压机构16的排放路径为第三排放路径S；排放物从左前侧的围挡件80的开口排出后，再向右排放到位于左侧的第二泄压机构16的排放路径为第四排放路径S’，排放物从左前侧的围挡件80的开 口排出后，再向右排放到位于右侧的第二泄压机构16的排放路径为第五排放路径S”，第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在电池单体21的顶面上的投影点为第一投影点，第二泄压机构16的中心在电池单体21的顶面上的投影点为第二投影点，第一泄压机构215的周缘在电池单体21的顶面上的投影线为第一投影线，围挡件80的左后框条的右壁面与电池单体21的顶面的交线为第二交线，围挡件80的左后框条的后壁面与电池单体21的顶面的交线为第三交线，第一投影点和第二交线的前端点的连线为第四连线，第四连线与第一投影线的交点为第五交点，第二投影点和第三交线的左端点的连线为第五连线，第五连线与最左侧的电池单体21的左侧面的交点为第六交点；第一泄压机构215的中心与第五交点之间的距离为L9，第五交点和第二交线的前端点之间的距离为L10，第二交线的长度为L11，第三交线的长度为L12，第六交点和第三交线的左端点之间的距离为L13，第六交点和第二泄压机构16的中心之间的间距为L14，其中，L＝L9+L10+L11+L12+L13+L14。
在一具体实施例中，请一并结合图34所示，该实施例与上一实施例不同之处在于：电池模块20包括前后分布的两列电池单体21，两列电池单体21分为左右两个区域，每个区域均对应设有一个围挡件80，两个围挡件80的开口相对设置，框架14的左右两侧均设有第二泄压机构16；相邻两个围挡件80之间形成有第二排气通道102，电池单体21热失控释放的排放物经对应的围挡件80的开口流入第二排气通道102，再经第二排气通道102流入环形通道33，最终流到第二泄压机构16处。
为了方便说明，选取最左侧且靠前设置的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图34中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。排放物从左侧的围挡件80的开口排出后，再向前排放到位于左侧的第二泄压机构16的排放路径为第三排放路径S；排放物从从左侧的围挡件80的开口排出后，再向后排放到位于左侧的第二泄压机构16的排放路径为第四排放路径S’；排放物从左侧的围挡件80的开口排出后，向后排放到位于右侧的第二泄压机构16的排放路径为第五排放路径S”，第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在电池单体21的顶面上的投影点为第一投影点，第二泄压机构16的中心在电池单体21的顶面上的投影点为第二投影点，第一泄压机构215的周缘在电池单体21的顶面上的投影线为第一投影线，围挡件80的右前框条的后壁面与电池单体21的顶面的交线为第四交线，围挡件80的右前框条的右壁面与电池单体21的顶面的交线为第五交线，围挡件80的前框条的前壁面与电池单体21的顶面的交线为第六交线，第一投影点和第四交线的左端点的连线为第六连线，第六连线与第一投影线的交点为第七交点，第二投影点和第六交线的左端点的连线为第七连线，第七连线与最左前侧的电池单体21的左侧面的交点为第八交点；第一泄压机构215的中心与第七交点之间的距离为L15，第七交点和第四交线的左端点之间的距离为L16，第四交线的长度为L17，第五交线的长度为L18，第六交线的长度为L19，第八交点和第六交线的左端点之间的距离为L20，第八交点和第二泄压机构16的中心之间的间距为L21，其中，L＝L15+L16+L17+L18+L19+L20+L21。
在一具体实施例中，结合图35～37所示，电池模块20包括一列电池单体21，该列电池单体21沿箱体10的长度方向(X方向)排布，每个电池单体21的前侧部设有第一泄压机构215，框架14的左壁设有前后设置的两个第二泄压机构16，该列电池单体21与框架14的内壁之间形成环形通道33，电池单体21热失控释放的排放物经环形通道33流到第二泄压机构16处。
为了方便说明，选取最左侧的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图36中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。排放物向左排放到位于前侧的第二泄压机构16的排放路径为第三排放路径S；排放物向右排放到位于前侧的第二泄压机构16的排放路径为第四排放路径S’；排放物向左排放到位于后侧的第二泄压机构16的排放路径为第五排放路径S”，第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在电池单体21的前侧面上的投影点为第一投影点，第二泄压机构16的中心在电池单体21的前侧面上的投影点为第二投影点，第一泄压机构215的周缘在电池单体21的前侧面上的投影线为第一投影线，第一投影点和第二投影点的连线为第八连线，第八连线与第一投影线的交点为第九交点，第八连线与电池单体21的左侧面的交点为第十交点；第一泄压机构215的中心与第九交点之间的距离为L22，第八交点和第十交点之间的距离为L23，第二泄压机构16的中心与第十交点之间的距离为L24，其中，L＝L22+L23+L24。
在一具体实施例中，结合图38～40所示，电池模块20包括一列电池单体21，该列电池单体21沿箱体10的长度方向(X方向)排布，每个电池单体21的底部设有第一泄压机构215，框架14的左壁设有前后设置的两个第二泄压机构16，电池模块20与框架14的内壁之间形成环形通道33，环形通道33也延伸至分割件与框架14的内壁之间，电池单体21通过分隔件50支撑于底板15上，且分隔件50与底板15之间形成有第一子泄压通道31，分隔件50开设有多个第一可通气结构51，多个第一可通气结构51分别与各电池单体21的第一泄压机构215一一对应连接。电池单体21热失控释放的排放物经第一子泄压通道31和环形通道33流到第二泄压机构16处，其中，第一可通气结构51为通孔，分隔件50为液冷板。
为了方便说明，选取最左侧的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图39中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。排放物向左排放到位于后侧的第二泄压机构16的排放路径为第三排放路径S；排放物向右排放到位于后侧的第二泄压机构16的排放路径为第四排放路径S’；排放物向左排放到位于前侧的第二泄压机构16的排放路径为第五排放路径S”，第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在分隔件50的底面上的投影点为第一投影点，第二泄压机构16的中心在分隔件50的底面上的投影点为第二投影点，第一泄压机构215的周缘在分隔件50的底面上的投影线为第一投影线，第一投影点和第二投影点的连线为第九连线，第九连线与第一投影线为第十一交点，第九连线与分隔件50的左壁面的交点为第十二交点，第一泄压机构215的中心与第十一交点之间的间距为L25，第十一交点和第十二交点之间的距离为L26，第十二交点与第二泄压机构16的中心之间的距离为L27，其中，L＝L25+L26+L27。
在一具体实施例中，结合图10和图13所示，该实施例与上一个实施例的不同之处在于：电池模块20包括两列电池单体21，两列电池单体21沿箱体10的宽度方向(Y方向)排布，每列电池单体21的两端均连接有端板22，电池单体21支撑在分隔件50上，分隔件50通过间隔元件60支撑在底板15上，间隔元件60的数量为三个，三个间隔元件60围设形成两个沿箱体10的宽度方向(Y方向)延伸的第一子泄压通道31，两个第一子泄压通道31分别与两列电池单体21的第一泄压机构215连接，每列电池单体21均有一条对应的第一子泄压通道31连接。电池单体21热失控释放的排放物经第一子泄压通道31和环形通道33流到第二泄压机构16处。在一些实施例中，第一可通气结构51为通孔，分隔件50为液冷板。
为了方便说明，选取最右侧并靠前设置的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图13中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。该电池单体21释放的排放物向右排放到位于前侧的第二泄压机构16的排放路径为第三排放路径S；排放物向右排放到位于后侧的第二泄压机构16的排放路径为第四排放路径S’；排放物向左排放到位于前侧的第二泄压机构16的排放路径为第五排放路径S”，第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在分隔件50的底面上的投影点为第一投影点，第二泄压机构16的中心在分隔件50的底面上的投影点为第二投影点，第一可通气结构51的周缘在分隔件50的底面上的投影线为第一投影线，第一投影点和第二投影点的连线为第十连线，第十连线与第一投影线的交点为第十三交点，分隔件50的右侧壁与第十连线的交点为第十四交点，过第十连线且与分隔件50的底面垂直的平面与右侧端板22的右壁面的下边线的交点为第十五交点，第一泄压机构215的中心与第十三交点之间的距离为L28，第十三交点与第十四交点之间的距离为L29，第十四交点与第十五交点之间的距离为L30，第二泄压机构16的中心与第十五交点之间的距离为L31，其中，L＝L28+L29+L30+L31。
在一具体实施例中，结合图15和图16所示，该实施例与上一个实施例的不同之处在于：电池模块20的端板22伸入环形通道33内并与底板15形成密封结构，间隔元件60的数量为十二，十二个间隔元件60呈矩阵排列并围设形成两个第一子泄压通道31和三个第二子泄压通道34，第一子泄压通道31沿箱体10的宽度方向(Y方向)延伸，两个第一子泄压通道31沿箱体10的宽度方向(Y方向)间隔设置，第二子泄压通道34沿箱体10的宽度方向(Y方向)延伸，三个第二子泄压通道34沿箱体10的长度方向(X方向)间隔设置。电池单体21释放的排放物无法向右经过端板22进入环形通道33，而要沿第一子泄压通道31流到第二子泄压通道34内，再经第二子泄压通道34进入环形通道33，最终流到第二泄压机构16处。
为了方便说明，选取最右侧并靠前设置的电池单体21的排放路径作为示例进行说明，该电池单体21的排放物释放后具有多种排放路径，图15中的虚线箭头示意出了该电池单体21的排放物经由第一泄压机构215排放至第二泄压机构16的三种排放路径示意图。该电池单体21释放的排放物向前排放到位于前侧的第二泄压机构16的排放路径为第三排放路径S；排放物向后排放到位于后侧的第二泄压机构16的排放路径为第四排放路径S’；排放物向后排放到位于前侧的第二泄压机构16的排放路径为第五排放路径S”，第四排放路径S’的长度和第五排放路径S”的长度均大于第三排放路径S的长度，第三排放路径S可以为最短排放路径。
第三排放路径S的长度L可通过下述方法测量得到；第一泄压机构215的中心在分隔件50的底面上的投影点为第一投影点，第二泄压机构16的中心在最右前侧的间隔元件60的前壁面上的投影点为第二投影点，第一可通气结构51的周缘在分隔件50的底面上的投影线为第一投影线，最右前侧的间隔元件60的左壁面与分隔件50的底面的交线为第七交线，第七交线的后端点与第一投影点的连线为第十一连线，第一十连线与第一投影线的交点为第十六交点，第七交线的前端点与第二投影点的连线为第十二连线，右侧端板22的右壁面与第十二连线的交点为十七交点，第一泄压机构215的中心与第十六交点之间的距离为L32，第十六交点与第七交线的后端点之间的间距为L33，第七交线的长度为L34，第七交线的前端点与第十七交点之间的距离为L35，第十七交点与第二泄压机构16的中心之间的距离为L36，其中，L＝L32+L33+L34+L35+L36。
在一具体实施例中，结合图18、图20和图22所示，该实施例与上一个实施例的不同之处在于：环形通道33内设有环形件70，环形件70将环形通道33分隔为第一子环形通 道331和第二子环形通道332，环形件70的前侧壁和后侧壁的中部开设有第二可通气结构71，第二可通气结构71可连通第一子环形通道331和第二子环形通道332，第二可通气结构71为通孔。这样电池单体21释放的排放物排出第二子泄压通道34后进入第一子环形通道331，再经第二可通气结构71进入第二子泄压通道34，最后沿第二子泄压通道34流到第二泄压机构16处。参阅图18所示，第三排放路径S从第二子泄压通道34伸出后进入第一子环形通道331然后再经第二可通气结构71进入第二子泄压通道34，最后流到第二泄压机构16处。
第三排放路径S的长度L可通过下述方法测量得到；第二泄压机构16的中心在环形件70的前侧壁部72的前壁面的投影点为第二投影点，第一可通气结构51的中心在环形件70的前侧壁部72的前壁面的投影点为第三投影点，第二投影点和第三投影点的连线为第十三连线，环形件70的右侧壁部72的右壁面与第十三连线的交点为第十八交点，第七交线的前端点与第三投影点之间的距离为L37，第三投影点与第十八交点之间的距离为L38，第十八交点与第二泄压机构16的中心之间的距离为L39，其中，L＝L32+L33+L34+L37+L38+L39。
在本申请的另一个实施例中，结合图10和图13所示，孔径最大的过滤孔401的横截面积为S，任意一个电池单体21的第一泄压机构215和第二泄压机构16之间的最短排放路径的长度为L，则，其中，L的单位为m，S的单位为mm2。
任意一个电池单体21的第一泄压机构215，可以理解的是，每个电池单体21的第一泄压机构215，即每个电池单体21的第一泄压机构215和第二泄压机构16之间的最短排放路径均满足上述方程式。
通过采用该实施例的技术方案，每个电池单体21的最短排放路径L与过滤件40的孔径最大的过滤孔401的横截面积S均处于合理的设计范围内，更好地提升电池1100的使用可靠性。
在本申请的另一个实施例中，
通过采用该实施例的技术方案，电池单体21的最短排放路径L与过滤件40的孔径最大的过滤孔401的横截面积S均处于更合理的设计范围内，电池1100发生排气温度过高的风险更小，电池1100的使用可靠性更好。另外，的设计，孔径最大的过滤孔401的横截面积S可设计的较大，减少因排气不畅而导致箱体10出现鼓胀或者大量火星颗粒喷出电池的风险。
在一些实施例中，的值可以为但不限于0.0021m/mm2、0.005m/mm2、0.005m/mm2、0.08m/mm2、0.1m/mm2、1m/mm2、10m/mm2、15m/mm2、16m/mm2、20m/mm2、25m/mm2、30m/mm2、35m/mm2、40m/mm2、45m/mm2、50m/mm2或54.9m/mm2。
在本申请的另一个实施例中，0.05m≤L≤4m。
通过采用该实施例的技术方案，最短排放路径的长度位于该范围内，最短排放路径不至于设计的过短，而导致颗粒物降温时间短，电池1100排出的颗粒物温度高，容易引起电池1100外部环境恶化；最短排放路径不至于设于过长，而导致排气时间长，泄压不及时而出现箱体10爆炸。
在一些实施例中，L的值可以为但不限于为0.05m、0.1m、0.5m、2m、2.5m、3m、3.5m或4m。
下面表1示出了一些实验采用的最短排放路径的长度L的参数、孔径最大的过滤孔401的横截面积S的参数以及实验结果。该实验具体方法采用GB 38031-2020所记载的方式，在此不再赘述。
表1
通过上表可以看出，在的值小于或等于0.002m/mm2的情况下，从箱体10内部排放的颗粒物的温度较高，电池1100的排气温度高，容易引发较为严重的起火危害。在的值在0.0021m/mm2至0.0078m/mm2的情况下，仅有少量火星从箱体10喷出，其危害较小且可控。在的值在0.008m/mm2至16m/mm2的范围内，箱体10可处于正常状态。在的值在16.12m/mm2至54.1714m/mm2的范围内，箱体10容易产生鼓包，箱体10的密封性虽会受到一定的影响，但电池1100仍可处于可使用状态。在的值等于或大于55m/mm2情况下，箱体10的密封性会受到严重破坏，此时箱体10可能会产生损坏严重或者温度过高的严重危害。
在另一实施例中，电池1100的体积能量密度为E，孔径最大的过滤孔401的横截面积为S，则，其中，E的单位为Wh/L，S的单位为mm2。
电池1100的体积能量密度可以是指电池1100的单体体积内包含的能量，在实际使用过程中，电池1100的体积能量密度可从电池1100的铭牌上直接读取。
在一般情况下，随电池1100的体积能量密度提高，电池1100热失控剧烈程度增加，电池单体21释放排放物更剧烈，导致温度更高、速度更快的排放物沿泄压通道30涌向第二泄压机构16，电池1100温度过高的风险加剧，对过滤件40的过滤功能要求越高，过滤件40的孔径最大的过滤孔401的横截面积也可以设计的更小。
通过采用该实施例的技术方案，通过的设定，使得过滤件40的孔径最大的过滤孔401的横截面积S与电池1100的体积能量密度E具有合理的设计，减少电池1100排气温度过高的风险，有利于提升电池1100的使用可靠性；在满足的设定下，在电池1100的体积能量密度一定的情况下，孔径最大的过滤孔401的横截面积不会设计的过小，可使得过滤孔401能够让颗粒物顺利快速地通过，从而减少因过滤件40堵塞、泄压不及时等而出现箱体10损坏严重的风险；在满足的设定下，在电池1100的体积能量密度一定的情况下，孔径最大的过滤孔401的横截面积不会设计过大，可使得过滤孔401能够将温度较高的颗粒物拦下，从而减少因大量火星喷出点燃外部烟气可能引起电池1100外部环境恶化的风险。
在另一实施例中，
通过采用该实施例的技术方案，使得过滤件40的孔径最大的过滤孔401的横截面积S与电池1100的体积能量密度E具有更合理的设计，电池1100发生外部排气温度过高的风险更小，电池1100的使用可靠性更好。另外，的设计，孔径最大的过滤孔401的横截面积S可设计的较大，减少因排气不畅而导致箱体10出现鼓胀或者大量火星颗粒喷出电池的风险。
在一些实施例中，的值可以为但不限于17(Wh/L)/mm2、20(Wh/L)/mm2、23(Wh/L)/mm2、100(Wh/L)/mm2、500(Wh/L)/mm2、1000(Wh/L)/mm2、1500(Wh/L)/mm2、2000(Wh/L)/mm2、2500(Wh/L)/mm2、3000(Wh/L)/mm2、3200(Wh/L)/mm2、3500(Wh/L)/mm2、4000(Wh/L)/mm2、4500(Wh/L)/mm2、5000(Wh/L)/mm2、5500(Wh/L)/mm2、6000(Wh/L)/mm2、6500(Wh/L)/mm2、7000(Wh/L)/mm2、7500(Wh/L)/mm2、8000(Wh/L)/mm2、8500(Wh/L)/mm2、9000(Wh/L)/mm2、9500(Wh/L)/mm2、10000(Wh/L)/mm2、10500(Wh/L)/mm2、11000(Wh/L)/mm2或11300(Wh/L)/mm2。
在另一实施例中，400Wh/L≤E≤800Wh/L。
通过采用该实施例的技术方案，大部分电池1100的体积能量密度E位于上述范围内，从而使得上述公式能够适用于大部分电池1100中，适用范围广。
在一实施例中，E的值可以为但不限于400Wh/L、450Wh/L、500Wh/L、550Wh/L、600Wh/L、650Wh/L、700Wh/L、750Wh/L或800Wh/L。
在另一实施例中，0.06mm2≤S≤25mm2。
通过采用该实施例的技术方案，孔径最大的过滤孔401的横截面积S位于上述范围内， 过滤件40可有效地拦截大部分高温颗粒物，减少电池1100排气温度过高的风险。若孔径最大的过滤孔401的横截面积S设计的过小，颗粒物容易堵塞过滤件40，造成泄压不及时，容易引起箱体10损坏严重；若孔径最大的过滤孔401的横截面积S设计的过大，温度较高的大颗粒物容易穿过过滤件40，引起电池1100排气温度过高。
在另一实施例中，0.25mm2≤S≤6.25mm2。
通过采用该实施例的技术方案，孔径最大的过滤孔401的横截面积设计更合理，能够进一步地减小电池1100排气温度过高的风险。
在一实施例中，S的值可以为但不限于0.06mm2、0.1mm2、0.15mm2、0.2mm2、0.25mm2、0.3mm2、1mm2、2mm2、3mm2、4mm2、5mm2、6mm2、6.25mm2、7mm2、8mm2、9mm2、10mm2、12mm2、14mm2、16mm2、18mm2、20mm2、22mm2、24mm2或25mm2。
下面表2示出了一些实验采用的电池1100的体积能量密度E的参数、孔径最大的过滤孔401的横截面积S的参数以及实验结果。该实验具体方法采用GB 38031-2020所记载的方式，在此不再赘述。
表2
通过上表可以看出，在的值小于17(Wh/L)/mm2的情况下，从箱体10内部排放的 颗粒物的温度较高，电池1100的排气温度高，容易引发较为严重的起火危害。在的值在17(Wh/L)/mm2至22.8(Wh/L)/mm2的范围内，仅有少量火星从箱体10喷出，其危害较小且可控。在的值在23(Wh/L)/mm2至3200(Wh/L)/mm2的范围内，箱体10可处于正常状态。在的值在3279(Wh/L)/mm2至11300(Wh/L)/mm2的范围内，箱体10会产生鼓包，箱体10的密封性虽会受到一定的影响，但电池1100仍可处于可使用状态。在的值大于11300(Wh/L)/mm2情况下，箱体10的密封性容易受到严重破坏，此时箱体10可能会产生损坏严重或者温度过高的严重危害。
本申请实施例的电池，通过合理设计过滤件40的结构，可对电池热失控排放物中的高温颗粒物实现有效拦截的同时，还可减少因颗粒物堵塞导致电池1100泄压不畅，甚至出现爆炸的风险。
在本申请的另一实施例中，还提供了一种用电装置，包括如上述实施例的电池1100。
上文对各个实施例的描述倾向于强调各个实施例之间的不同之处，其相同或相似之处可以相互参考，为了简洁，本文不再赘述。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (43)

  1. 一种电池，其中，包括：
    箱体；
    电池模块，位于所述箱体内，所述电池模块包括至少一个电池单体，每个所述电池单体设有第一泄压机构，所述箱体具有第二泄压机构；
    泄压通道，所述泄压通道连接至少一个所述电池单体的所述第一泄压机构与所述第二泄压机构，所述第一泄压机构用于在致动的情况下将所述电池单体内部产生的排放物释放到所述泄压通道，所述泄压通道用于将所述排放物引导至所述第二泄压机构，所述第二泄压机构用于在致动的情况下将所述泄压通道的所述排放物释放到所述箱体的外部；
    其中，所述电池单体、所述电池模块、所述箱体和所述泄压通道中的至少一个设有过滤件，所述过滤件设有用于阻挡所述排放物中的颗粒物通过的过滤孔。
  2. 根据权利要求1所述的电池，其中：在所述过滤件设于所述电池单体的情况下，所述第一泄压机构与所述过滤件为整体化结构，或者，所述过滤件与所述电池单体的壳体连接；
    在所述过滤件设于所述箱体的情况下，所述第二泄压机构与所述过滤件为整体化结构，或者，所述过滤件与所述箱体连接；或者，所述箱体的侧壁设有所述过滤孔，所述箱体的侧壁设有所述过滤孔的部分形成所述过滤件。
  3. 根据权利要求1或2所述的电池，其中：在所述过滤件设于所述箱体的情况下，所述第二泄压机构朝向所述电池模块的侧方设有所述过滤件，以阻挡所述电池单体释放的所述颗粒物进入所述第二泄压机构；和/或，所述第二泄压机构背向所述电池模块的侧方设有所述过滤件，以阻挡所述第二泄压机构释放的所述颗粒物通过。
  4. 根据权利要求3所述的电池，其中：所述过滤件的所有的所述过滤孔的横截面积之和为过滤面积；
    在所述第二泄压机构朝向所述电池模块的侧方设有所述过滤件的情况下，位于所述第二泄压机构朝向所述电池模块的侧方的所述过滤件为第一过滤件，所述第一过滤件的所述过滤面积大于所述第二泄压机构的最大泄压面积；
    在所述第二泄压机构背向所述电池模块的侧方设有所述过滤件的情况下，位于所述第二泄压机构背向所述电池模块的侧方的所述过滤件为第二过滤件，所述第二过滤件的所述过滤面积小于所述第二泄压机构的最大泄压面积。
  5. 根据权利要求4所述的电池，其中：在所述第二泄压机构朝向所述电池模块的侧方设有多个所述第一过滤件的情况下，多个所述第一过滤件沿所述电池单体释放出来的所述排放物的排放路径依次排布，多个所述第一过滤件的所述过滤面积沿所述排放物的排放路径减小；
    在所述第二泄压机构背向所述泄压通道的侧方设有多个所述第二过滤件的情况下，多个所述第二过滤件沿所述第二泄压机构释放的所述排放物的排放路径依次排布，多个所述第二过滤件的所述过滤面积沿所述排放物的排放路径减小。
  6. 根据权利要求4或5所述的电池，其中：在所述第二泄压机构朝向所述电池模块的侧方设有多个所述第一过滤件的情况下，多个所述第一过滤件的所述过滤孔的孔径沿所述排放物的排放路径减小；
    在所述第二泄压机构背向所述泄压通道的侧方设有多个所述第二过滤件的情况下，多个所述第二过滤件的所述过滤孔的孔径沿所述排放物的排放路径减小。
  7. 根据权利要求3～6中任一项所述的电池，其中：所述过滤件与所述第二泄压机构间隔设置。
  8. 根据权利要求3～7中任一项所述的电池，其中：所述过滤件包括板部以及环设于所 述板部周围的环壁部，所述环壁部的一端与所述板部连接，所述环壁部的另一端与所述箱体连接，所述环壁部环设于所述第二泄压机构的周围，所述环壁部和所述板部中的至少一个设有所述过滤孔。
  9. 根据权利要求3～8中任一项所述的电池，其中：所述过滤件具有第一过滤部和第二过滤部，所述第一过滤部和所述第二过滤部均设有多个所述过滤孔，至少一个所述电池单体的所述第一泄压机构和所述第二泄压机构之间形成有第一排放路径和第二排放路径，所述第一排放路径经所述第一过滤部的所述过滤孔，所述第二排放路径经所述第二过滤部的所述过滤孔；
    在所述第一排放路径的长度大于所述第二排放路径的长度情况下，所述第一过滤部的所述过滤孔的孔径大于所述第二过滤部的所述过滤孔的孔径。
  10. 根据权利要求1～9中任一项所述的电池，其中：所述过滤孔的数量为多个，任意两个所述过滤孔的孔径相同，或者，至少两个所述过滤孔的孔径不同。
  11. 根据权利要求10所述的电池，其中：孔径最大的所述过滤孔的横截面积为S，至少一个所述电池单体的所述第一泄压机构和所述第二泄压机构之间的最短排放路径为L，则，其中，L的单位为m，S的单位为mm2。
  12. 根据权利要求10或11所述的电池，其中：孔径最大的所述过滤孔的横截面积为S，任意一个所述电池单体的所述第一泄压机构和所述第二泄压机构之间的最短排放路径的长度为L，则，其中，L的单位为m，S的单位为mm2。
  13. 根据权利要求11或12所述的电池，其中：
  14. 根据权利要求11～13中任一项所述的电池，其中：0.05m≤L≤4m。
  15. 根据权利要求10～14中任一项所述的电池，其中：所述电池的体积能量密度为E，孔径最大的所述过滤孔的横截面积为S，则，其中，E的单位为Wh/L，S的单位为mm2。
  16. 根据权利要求15所述的电池，其中：
  17. 根据权利要求15或16所述的电池，其中：400Wh/L≤E≤800Wh/L。
  18. 根据权利要求11～17中任一项所述的电池，其中：0.06mm2≤S≤25mm2。
  19. 根据权利要求18所述的电池，其中：0.25mm2≤S≤6.25mm2。
  20. 根据权利要求1～19中任一项所述的电池，其中：所述泄压通道还包括用于与所述第二泄压机构连接的第一子泄压通道，所述电池还包括分隔件，所述分隔件用于隔开所述电池模块与所述第一子泄压通道，所述分隔件设有多个第一可通气结构，每个所述第一可通气结构连接至少一个所述电池单体的所述第一泄压机构和所述第一子泄压通道。
  21. 根据权利要求20所述的电池，其中：所述泄压通道包括至少两个所述第一子泄压通道，每个所述第一子泄压通道连接不同的所述电池单体所对应的所述第一可通气结构，所述第一子泄压通道间通过间隔元件隔开。
  22. 根据权利要求21所述的电池，其中：所述泄压通道还包括连通通道，所述分隔件的壁面和所述箱体的内壁面围设形成所述连通通道，每个所述第一子泄压通道通过所述连通通道与所述第二泄压机构相连接。
  23. 根据权利要求22所述的电池，其中：所述电池模块包括至少一列所述电池单体，每列所述电池单体包括至少一个所述电池单体，每列所述电池单体对应设置有至少一个所 述第一子泄压通道，每个所述第一子泄压通道沿对应的一列所述电池单体的排布方向延伸；每列所述电池单体所对应的每个所述第一可通气结构均与对应的所述第一子泄压通道连接。
  24. 根据权利要求23所述的电池，其中：所述第二泄压机构位于所述电池模块沿所述第一子泄压通道的延伸方向的端部的侧方。
  25. 根据权利要求24所述的电池，其中：所述连通通道为环形通道，所述环形通道环设于所述分隔件的周围。
  26. 根据权利要求25所述的电池，其中：至少一列所述电池单体的两端设有端板，所述端板插入所述环形通道并与所述箱体的内壁面密封连接；
    所述泄压通道还包括第二子泄压通道，所述第二子泄压通道与所述第一子泄压通道相交，所述第二子泄压通道用于连通对应的所述第一子泄压通道和所述环形通道。
  27. 根据权利要求26所述的电池，其中：每列所述电池单体的两端均设有所述端板，每个所述第一子泄压通道与所述第二子泄压通道连通。
  28. 根据权利要求26或27所述的电池，其中：所述泄压通道包括多个所述第二子泄压通道，所述第二子泄压通道间通过所述间隔元件隔开。
  29. 根据权利要求28所述的电池，其中：多个所述第二子泄压通道沿所述第一子泄压通道的延伸方向间隔排布。
  30. 根据权利要求26～29中任一项所述的电池，其中：所述第一子泄压通道和所述第二子泄压通道垂直。
  31. 根据权利要求25～30中任一项所述的电池，其中：所述环形通道设有与所述箱体连接的环形件，所述环形件用于将所述环形通道分隔为第一子环形通道和第二子环形通道，所述第二子环形通道环设于所述第一子环形通道的周围；所述环形件开设有用于连通所述第一子环形通道和所述第二子环形通道的第二可通气结构，所述第二子环形通道与所述第二泄压机构连接，所述第一子环形通道与所述第一子泄压通道连通。
  32. 根据权利要求31所述的电池，其中：所述第二可通气结构为通孔。
  33. 根据权利要求31或32所述的电池，其中：所述环形件包括至少三个依次首尾连接的侧壁部，靠近所述第二泄压机构的所述侧壁部设有所述第二可通气结构。
  34. 根据权利要求33所述的电池，其中：在所述过滤件设于所述箱体的情况下，靠近所述第二泄压机构的所述侧壁部为所述过滤件，所述过滤孔为所述第二可通气结构。
  35. 根据权利要求31或32所述的电池，其中：所述环形件包括至少三个依次首尾连接的侧壁部，远离所述第二泄压机构的所述侧壁部设有所述第二可通气结构。
  36. 根据权利要求35所述的电池，其中：靠近所述第二泄压机构的所述侧壁部为第一侧壁部，与所述第一侧壁部相邻的所述侧壁部和与所述第一侧壁部相对的所述侧壁部中的至少一个设有所述第二可通气结构。
  37. 根据权利要求35或36所述的电池，其中：所述第二可通气结构位于对应的所述侧壁部的中部。
  38. 根据权利要求35～37中任一项所述的电池，其中：在所述过滤件设于所述箱体的情况下，远离所述第二泄压机构的所述侧壁部为所述过滤件，所述过滤孔为所述第二可通气结构。
  39. 根据权利要求31～33和35～37中任一项所述的电池，其中：在所述过滤件设于所述箱体的情况下，所述过滤件盖设于所述第二可通气结构。
  40. 根据权利要求24～34中任一项所述的电池，其中：所述过滤件位于所述电池模块和所述第二泄压机构之间；
    所述过滤件具有第一过滤部和第二过滤部，所述第一过滤部和所述第二过滤部均设有多个所述过滤孔，最靠近所述第二泄压机构的所述电池单体的所述第一泄压机构和所述第二泄压机构之间形成有第一排放路径和第二排放路径，所述第一排放路径经所述第一过滤部的所述过滤孔，所述第二排放路径经所述第二过滤部的所述过滤孔；
    在所述第一排放路径的长度大于所述第二排放路径的长度的情况下，所述第一过滤部的所述过滤孔的孔径大于所述第二过滤部的所述过滤孔的孔径。
  41. 根据权利要求21～40中任一项所述的电池，其中：所述箱体还包括底板，所述分隔件通过所述间隔元件支撑于所述底板上，所述电池模块位于所述分隔件的上方，所述第一泄压机构位于所述电池单体的底部。
  42. 根据权利要求41所述的电池，其中：所述分隔件为热管理部件，所述热管理部件用于与所述电池模块进行换热。
  43. 一种用电装置，其中：包括权利要求1～42中任一项所述的电池。
PCT/CN2023/119123 2023-06-07 2023-09-15 电池及用电装置 Pending WO2024250482A1 (zh)

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CN221353079U (zh) * 2023-11-16 2024-07-16 惠州亿纬锂能股份有限公司 热管理装置及电池包
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