WO2025092199A1 - 电池包及用电设备 - Google Patents

电池包及用电设备 Download PDF

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Publication number
WO2025092199A1
WO2025092199A1 PCT/CN2024/115635 CN2024115635W WO2025092199A1 WO 2025092199 A1 WO2025092199 A1 WO 2025092199A1 CN 2024115635 W CN2024115635 W CN 2024115635W WO 2025092199 A1 WO2025092199 A1 WO 2025092199A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
battery
battery cell
explosion
along
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/CN2024/115635
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English (en)
French (fr)
Inventor
伍智仁
罗峥
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Sunwoda Mobility Energy Technology Co Ltd
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Sunwoda Mobility Energy Technology Co Ltd
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Filing date
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Application filed by Sunwoda Mobility Energy Technology Co Ltd filed Critical Sunwoda Mobility Energy Technology Co Ltd
Publication of WO2025092199A1 publication Critical patent/WO2025092199A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • 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 embodiments of the present application relate to but are not limited to the field of battery technology.
  • battery packs as the core energy storage and supply devices of new energy vehicles, have attracted increasing attention for their safety.
  • battery packs on the market usually have multiple battery cells inside, and explosion-proof valves are set for each battery cell so that pressure can be released through the explosion-proof valve when thermal runaway occurs in the battery cell.
  • the battery cells are usually upright and the explosion-proof valves are set upwards, which makes the explosion-proof valve face the passenger compartment when releasing pressure, increasing the risk of passengers on board; if the battery cells are inverted, the battery cell installation stability will be insufficient, which will also affect the pressure release of the explosion-proof valve and fail to ensure the safety of the battery pack.
  • an embodiment of the present application provides a battery pack, including:
  • a box body the box body has a first direction
  • the box body comprises a bottom plate and a top plate arranged opposite to each other along the first direction
  • the bottom plate comprises a plate body and a protrusion connected to each other, the protrusion protrudes toward the top plate relative to the plate body
  • the box body has a receiving cavity, and the receiving cavity is arranged between the bottom plate and the top plate;
  • a battery cell the battery cell is arranged in the accommodating cavity, the battery cell comprises a bottom wall and a top wall arranged opposite to each other along the first direction, the bottom wall is provided with an explosion-proof valve, the bottom wall is arranged toward the bottom plate and connected to the protruding portion, and the top wall is connected to the top plate;
  • the convex portion has an exhaust channel and an air hole connected to the exhaust channel, and the air hole is arranged toward the battery cell;
  • An orthographic projection of the explosion-proof valve on the protruding portion along the first direction is at least partially located within the air hole.
  • the number of the battery cells is multiple, and the surface of the bottom wall of each battery cell is The area of the projection along the first direction on the bottom wall of each battery cell is A mm 2 , and the projection area of the projection along the first direction on the bottom wall of each battery cell is B mm 2 , satisfying:
  • the housing has a second direction perpendicular to the first direction, the second direction is the extension direction of the exhaust channel, the hole area of the air hole is E mm 2 , the cross-sectional area of the exhaust channel along the second direction is F mm 2 , and the following conditions are satisfied:
  • the bottom wall has an explosion-proof hole
  • the explosion-proof hole is directly opposite to the air hole along the first direction
  • the explosion-proof hole is sealed and connected to the air hole
  • the explosion-proof valve cover is sealed on the explosion-proof hole
  • the battery cells and the air holes are both provided in plural numbers, and the explosion-proof valve of one battery cell corresponds to one air hole.
  • the housing further comprises:
  • a beam body wherein the beam body is connected between the bottom plate and the top plate, the beam body is provided with a confluence channel and a pressure relief device, the confluence channel has an air inlet and an air outlet, the air inlet is connected to the exhaust channel, and the pressure relief device is covered with the air outlet, wherein the air inlet is arranged on a side of the beam body close to the battery cell, the air outlet is arranged between a side of the beam body away from the battery cell, and the pressure relief device is arranged on a side of the beam body away from the battery cell.
  • the protrusion extends along a second direction intersecting the first direction, the protrusion has a first end and a second end oppositely disposed along the second direction, and the first end is provided with an exhaust hole;
  • the beam body is arranged at the first end, and the exhaust hole is communicated between the exhaust channel and the air inlet.
  • a plurality of battery cells are arranged in the accommodating cavity, and the plurality of battery cells are arranged in a row along the second direction, and a plurality of rows of battery cells are arranged in the accommodating cavity along a third direction, and the first direction, the second direction, and the third direction intersect;
  • the bottom plate includes a plurality of the protrusions, the plurality of the protrusions are arranged along the third direction, and one of the protrusions is correspondingly connected to a row of the battery cells.
  • the protrusion is provided with avoidance spaces on both sides along the third direction, and the avoidance spaces are connected to the accommodating cavity;
  • the battery cell includes a pole arranged on the bottom wall, and the battery pack also includes a bus bar, which connects the poles of two adjacent battery cells, and the poles and the bus bar are arranged in the avoidance space.
  • the busbar is arranged in the gap.
  • the battery pack further comprises:
  • a protective layer is connected between the bottom wall and the protruding portion.
  • an embodiment of the present application provides an electrical device, comprising the battery pack described in any of the above embodiments.
  • the battery pack of the embodiment of the present application includes: a box body, the box body has a first direction, the box body includes a bottom plate and a top plate arranged opposite to each other along the first direction, the bottom plate includes a plate body and a protrusion connected to each other, the protrusion protrudes toward the top plate relative to the plate body, the box body has a accommodating cavity, the accommodating cavity is arranged between the bottom plate and the top plate; a battery cell, the battery cell is arranged in the accommodating cavity, the battery cell includes a bottom wall and a top wall arranged opposite to each other along the first direction, the bottom wall is provided with an explosion-proof valve, the bottom wall is arranged toward the bottom plate and connected to the protrusion, and the top wall is connected to the top plate; the protrusion has an exhaust channel and an air hole connected to the exhaust channel, the air hole is arranged toward the battery cell; the orthographic projection of the explosion-proof valve on the protrusion along the first direction is at least partially located in the air hole.
  • the battery pack is provided with a protruding portion protruding toward the top plate on the bottom plate of the box body, and the protruding portion is used to connect the bottom wall of the battery cell, and the top wall of the battery cell is connected to the top plate of the box body, so that the protruding portion can form a support below the battery cell, so that the battery cell can be stably installed in the accommodating cavity of the box body, thereby improving the stability and safety of the battery pack;
  • the electrical equipment of the embodiment of the present application may include all the technical features and beneficial effects of the above-mentioned battery pack, which will not be repeated here.
  • FIG1 is a schematic diagram of the three-dimensional structure of a battery pack provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of an exploded structure of parts of the battery pack in FIG1 ;
  • FIG3 is a schematic diagram of an exploded structure of parts of a battery pack according to an embodiment of the present application viewed from another angle;
  • FIG4 is a schematic diagram of the front structural view of a battery pack according to an embodiment of the present application.
  • FIG5 is a schematic cross-sectional view of the battery pack along line A-A in FIG4 ;
  • FIG6 is a schematic diagram of a partial enlarged structure of area A in FIG5 ;
  • FIG7 is a schematic diagram of a three-dimensional perspective of the cross-sectional structure in FIG5;
  • FIG8 is a schematic diagram of a partial enlarged structure of area B in FIG7;
  • FIG9 is a schematic cross-sectional view of the battery pack along line B-B in FIG4 ;
  • FIG10 is a schematic diagram of a partial enlarged structure of area C in FIG9;
  • FIG11 is a schematic diagram of a three-dimensional perspective of the cross-sectional structure in FIG9;
  • FIG12 is a schematic diagram of a partial enlarged structure of the D area in FIG11;
  • FIG13 is a schematic diagram of an exploded structure of some parts of a box in a battery pack according to an embodiment of the present application.
  • FIG14 is a schematic diagram of the three-dimensional structure of a battery cell in a battery pack according to an embodiment of the present application.
  • Figure numerals 100-box; 110-bottom plate; 111-plate body; 112-raised portion; 113-exhaust channel; 114-air hole; 115-exhaust hole; 120-top plate; 130-beam body; 131-convex channel; 132-pressure relief device; 133-air inlet; 134-air outlet; 140-accommodating chamber; 150-adhesive layer; 160-avoidance space; 200-battery cell; 210-bottom wall; 220-top wall; 230-explosion-proof valve; 240-pole; 250-bus; 260-explosion-proof hole; 300-protective layer; 310-insulating layer; 320-flame retardant and heat-insulating layer.
  • arrows marked with X, Y, and Z respectively represent a first direction X, a second direction Y, and a third direction Z.
  • the first direction X, the second direction Y, and the third direction Z are introduced into the description of the present application in order to more clearly describe the structure and relative position relationship of the components in the battery pack.
  • Direction Y and the third direction Z are three relative directions intersecting each other, rather than absolute directions.
  • the first direction X, the second direction Y, and the third direction Z can point to any direction in space as long as the intersection relationship between the three is maintained.
  • the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.
  • the embodiment of the present application provides a battery pack, which can realize inverted installation of battery cells, thereby avoiding potential safety hazards above the battery pack and ensuring the stability of the installation of the battery cells.
  • the battery pack of the embodiment of the present application includes a box 100 and a battery cell 200.
  • the battery cell 200 is the core component of the battery pack, which is used to store and release electric energy
  • the box 100 is a shell used to protect and fix the battery cell 200, which plays a role in protecting and supporting the battery cell 200, and also plays a role in heat insulation, waterproof and fire prevention, to ensure the safety performance of the battery.
  • the box body 100 includes a bottom plate 110 and a top plate 120 which are arranged opposite to each other along a first direction X, the bottom plate 110 includes a plate body 111 and a protrusion 112, the plate body 111 and the protrusion 112 are connected, and the protrusion 112 is arranged to protrude relative to the plate body 111 toward the top plate 120.
  • the box body 100 has a receiving cavity 140 inside, and the receiving cavity 140 is arranged between the bottom plate 110 and the top plate 120.
  • the battery cell 200 is arranged in the receiving cavity 140, and the battery cell 200 includes a bottom wall 210 and a top wall 220 which are arranged opposite to each other along the first direction X, the bottom wall 210 is provided with an explosion-proof valve 230, the bottom wall 210 is arranged toward the bottom plate 110 and connected to the protrusion 112, and the top wall 220 is connected to the top plate 120.
  • the explosion-proof valve 230 of the battery cell 200 faces the bottom plate 110 of the box body 100, so that when thermal runaway occurs, the explosion-proof valve 230 will rupture and discharge the high-temperature and high-pressure gas flow toward the bottom plate 110, without impacting the top plate 120, thereby avoiding impact on the top of the battery pack and reducing safety risks.
  • the raised portion 112 of the bottom plate 110 is connected to the bottom wall 210 of the battery cell 200, which can form a supporting force for the battery cell 200 from below.
  • the top plate 120 is connected to the top wall 220 of the battery cell, so that it can work together with the raised portion 112 of the bottom plate 110 to clamp and fix the battery cell 200 located between the two, further improving the installation stability of the battery cell 200.
  • the battery cell 200 includes a shell, and a storage space is formed inside the shell.
  • the electrode assembly of the battery cell 200 is arranged in the storage space.
  • the bottom wall 210 of the battery cell 200 is a part of the shell, that is, the bottom wall 210 can be any wall of the shell, and the top wall 220 is another wall of the shell arranged opposite to the bottom wall 210.
  • the bottom wall 210 and the top wall 220 can be an integrated structure, or a detachable structure or a welded fixed structure.
  • the shell can include a main body and a cover part.
  • the main body forms a storage space with an opening at one end.
  • the cover part is connected to the main body by a detachable manner or a welding manner and covers the opening.
  • the bottom wall 210 can be the cover part or any wall of the main body. The specific arrangement can be made according to actual needs.
  • the protrusion 112 has an exhaust passage 113 and a connecting exhaust passage.
  • the gas hole 114 of the convex part 113 is arranged toward the battery cell 200; and the orthographic projection of the explosion-proof valve 230 on the convex part 112 along the first direction X is at least partially located in the gas hole 114. Therefore, when the explosion-proof valve 230 is broken, the high-temperature and high-pressure gas inside the battery cell 200 is discharged outward through the explosion-proof valve 230.
  • the orthographic projection of the explosion-proof valve 230 on the convex part 112 along the first direction X is at least partially located in the gas hole 114, at least part of the high-temperature and high-pressure airflow will be discharged directly toward the gas hole 114, and then be quickly discharged outward through the exhaust channel 113 in the convex part 112 of the bottom plate 110, the discharge path of the airflow can be controlled to avoid affecting other adjacent battery cells 200, thereby improving safety.
  • the battery pack can meet the vibration test and ensure the stability and safety of the internal structure of the battery pack. Please refer to the following test table for details.
  • the vibration test in the above table is carried out in accordance with the 8.2.1 test standard in the national standard GB 38031-2020 Safety requirements for power batteries for electric vehicles.
  • connection is reliable, the structure is intact, there is no shell cracking, and the thermal management function is intact (no debonding);
  • the battery BMS function should be normal, and there should be no errors in the collection of voltage, temperature, etc.
  • the vibration test results show that in the ratio range of 0.4 ⁇ B/A ⁇ 1, the battery pack can meet the vibration test and ensure the stability and safety of the internal structure of the battery pack.
  • the housing 100 has a second direction Y perpendicular to the first direction X, the second direction Y is the extension direction of the exhaust channel 113, the hole area of the air hole 114 is E mm 2 , and the cross-sectional area of the exhaust channel 113 along the second direction Y is F mm 2 , satisfying: 2/7 ⁇ E/F ⁇ 1/2; in this ratio range, the battery pack can meet the safety test of GB/T 31467.3-2015, please refer to the following test table for details.
  • the safety test results show that in the ratio range of 2/7 ⁇ E/F ⁇ 1/2, the battery pack can meet the safety test and ensure the exhaust safety when the battery cell 200 inside the battery pack explodes.
  • the bottom wall 210 is penetrated by an explosion-proof hole 260, which is arranged opposite to the air hole 114 along the first direction X, and the explosion-proof hole 260 and the air hole 114 are sealed and connected, and the explosion-proof valve 230 is sealed on the explosion-proof hole 260. Therefore, when the battery cell 200 has thermal runaway and the explosion-proof valve 230 breaks, the high-temperature and high-pressure airflow can be directly sprayed toward the air hole 114, and the airflow can directly enter the exhaust channel 113 without overflowing from the space between the explosion-proof valve 230 and the air hole 114, thereby avoiding affecting the adjacent battery cells 200 and further improving safety.
  • the number of battery cells 200 and air holes 114 is multiple, and the explosion-proof valve 230 of a battery cell 200 corresponds to a air hole 114. Therefore, each battery cell 200 has a corresponding air hole 114 to avoid mutual influence between the battery cells 200.
  • multiple battery cells 200 are arranged in an array along the second direction Y and the third direction Z.
  • a plurality of protrusions 112 are provided along the third direction Z,
  • the raised portion 112 extends along the second direction Y, and each raised portion 112 is provided with a plurality of air holes 114, and the plurality of air holes 114 are arranged at intervals along the second direction Y.
  • the explosion-proof valve 230 of each battery cell 200 is arranged opposite to a air hole 114, so that when any battery cell 200 has thermal runaway, the pressure relief of its explosion-proof valve 230 can be discharged from the corresponding air hole 114, avoiding affecting other battery cells 200.
  • the exhaust channel 113 extends along the second direction Y, and the cross-sectional area of the exhaust channel 113 perpendicular to the second direction Y is S 3 ; S 3 ⁇ S 1 is satisfied. In this way, when the explosion-proof valve 230 is opened, the ejected material of the battery cell 200 can be more effectively drained, effectively avoiding the valve opening speed being greater than the draining speed, avoiding the accumulation of ejected material, and reducing safety hazards.
  • the high-temperature and high-pressure gas flow discharged from the explosion-proof valve 230 enters the confluence channel 131 through the exhaust channel 113 and is discharged through the pressure relief device 132. Since the pressure relief device 132 is located on the side away from the battery cell 200, the high-temperature and high-pressure gas discharged by the pressure relief device 132 will not affect the battery cell 200, thereby ensuring safety.
  • the beam body 130 is formed by connecting multiple plates to form a hollow structure, and the confluence channel 131 is a hollow pipe formed inside the beam body 130.
  • the raised portion 112 extends along the second direction Y, and the raised portion 112 has a first end and a second end that are relatively arranged along the second direction Y, the first end is sealed and connected to the beam body 130, and the first end is provided with an exhaust hole 115; the beam body 130 is arranged at the first end, and the exhaust hole 115 is connected between the exhaust channel 113 and the air inlet 133. Therefore, the airflow entering the exhaust channel 113 can enter the air inlet 133 through the exhaust hole 115, and enter the confluence channel 131 through the air inlet 133, and finally be discharged through the pressure relief device 132.
  • the beam body 130 is provided with a plurality of air inlets 133, each of which corresponds to a raised portion 112, and is sealed and connected to the exhaust hole 115 on the corresponding raised portion 112, so that the plurality of exhaust channels 113 spaced apart along the third direction Z are all connected to the corresponding air inlet 133, and can all be discharged through the corresponding
  • the air inlet 133 is connected to the confluence channel 131 , so that the discharged high-temperature and high-pressure airflow can flow from the confluence channel 131 to the pressure relief device 132 and be discharged through the pressure relief device 132 .
  • the protrusion 112 is provided with avoidance spaces 160 on both sides along the third direction Z, and the avoidance spaces 160 are connected to the accommodating cavity 140;
  • the battery cell 200 includes a pole 240 disposed on the bottom wall 210, and the battery pack also includes a bus 250, which connects the poles 240 of two adjacent battery cells 200, and the poles 240 and the bus 250 are disposed in the avoidance spaces 160.
  • the pole 240 and the bus 250 can be avoided to provide space for electrical connection, thereby reducing the space occupied by the battery cell 200 in the first direction X; on the other hand, a bottom impact space is provided for the battery pack, and the bottom impact space, exhaust space and electrical connection space of the battery pack are overlapped together, thereby improving the rationality of the battery pack space utilization.
  • the explosion-proof valve 230 and the pole 240 of the battery cell 200 are both arranged on the bottom wall 210, that is, the battery cell 200 is completely inverted.
  • the top wall 220 of the battery cell 200 is connected to the top plate 120 of the box body 100 by means of an adhesive connection.
  • the adhesive connection method itself has a certain fixing effect, but as the use time passes or the temperature of the battery pack changes, the reliability of the adhesive connection will decrease.
  • a fixing effect can be provided at the bottom of the battery cell 200, reducing the dependence on the top connection, reducing the probability of failure, and improving the reliability of the battery and extending the service life.
  • the battery pack further includes a protective layer 300.
  • the layer 300 is connected between the bottom wall 210 and the protrusion 112.
  • the protective layer 300 is used to further provide protection for the battery pack and enhance the safety of the battery pack.
  • the protective layer 300 can be a single-layer structure.
  • the protective layer 300 can be a flame-retardant insulation layer, such as a mica board or a spray layer, which can play a further protective role against thermal runaway. Because when the explosion-proof valve 230 erupts, the temperature of the reactants is extremely high.
  • a flame-retardant insulation layer is provided as the protective layer 300, which can prevent the excessive temperature from affecting the surrounding materials, avoid ignition and ignition, and further reduce the risk of safety accidents.
  • the protective layer 300 can also be an insulating layer, which can play a role in electrical insulation protection, eliminate the problems of electrical clearance and creepage distance, and prevent the occurrence of short circuit problems caused by insulation failure, thereby affecting the electrical safety of the entire package.
  • the battery cell 200 is often provided with insulation protection measures, such as an external insulating blue film, an insulating top cover, etc., but since the battery cell 200 needs to be clamped by force, insulation damage may occur during use. Then, providing an insulating layer as the protective layer 300 can further improve its insulation protection performance.
  • the protective layer 300 may also include an adhesive layer to further fix the connection between the battery cell 200 and the bottom plate 110.
  • An adhesive layer 150 may also be provided between the battery cell 200 and the top plate 120 to strengthen the connection between the top plate 120 and the battery cell 200 and improve the installation stability of the battery cell 200.
  • an embodiment of the present application provides an electrical device, which may be various types of equipment such as new energy vehicles, computers, energy storage power supply devices, etc. It can be understood that the electrical device may include all the technical features and beneficial effects of the above-mentioned battery pack, which will not be repeated here.

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

Abstract

一种电池包及用电设备，属于电池技术领域，该电池包通过在箱体底板（110）设置朝向顶板（120）凸出的凸起部（112），利用凸起部（112）连接电池单体的底壁（210），电池单体的顶壁（220）连接箱体的顶板（120），从而凸起部（112）能够在电池单体的下方形成支撑，使得电池单体（200）能够稳固的安装在箱体（100）的容纳腔（140）内，提升电池包的稳定性和安全性；在另一方面，通过在电池单体的底壁（210）上设置防爆阀（230），且电池单体的底壁（210）朝向箱体的底板（110）设置，使得当电池单体（200）发生热失控时，防爆阀（230）能够朝向底板（110）方向泄压排气，减少对电池包上方的冲击，提升安全性。

Description

电池包及用电设备
本申请要求于2023年10月31日提交中国专利局、申请号为202322939297.5、申请名称为“电池包及用电设备”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
本申请实施例涉及但不限于电池技术领域。
背景技术
随着新能源汽车市场的不断发展，电池包作为新能源汽车核心的能量储存及供应装置，人们对其使用安全的关注日渐增高。目前市场上的电池包，其内部通常会设置有多个电池单体，针对每个电池单体会设置防爆阀，以便于电池单体出现热失控时能通过防爆阀进行泄压。此外，为了能使电池包中电池单体能够安装稳固，其电池单体通常是正置的，其防爆阀朝向上方设置，这就使得防爆阀在泄压时对着乘客舱，增加车载人员的乘车风险；如果将电池单体倒置，会使电池单体安装稳定性不够，也会影响到防爆阀泄压，无法保障电池包的安全性。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
根据本申请的第一方面，本申请实施例提供一种电池包，包括：
箱体，所述箱体具有第一方向，所述箱体包括沿所述第一方向相对设置的底板和顶板，所述底板包括相连接的板体和凸起部，所述凸起部相对于所述板体朝向所述顶板凸出，所述箱体具有容纳腔，所述容纳腔设置于所述底板和所述顶板之间；
电池单体，所述电池单体设于所述容纳腔内，所述电池单体包括沿所述第一方向相对设置的底壁和顶壁，所述底壁设有防爆阀，所述底壁朝向所述底板设置且与所述凸起部相连接，所述顶壁与所述顶板相连接；
所述凸起部具有排气通道和连通所述排气通道的过气孔，所述过气孔朝向所述电池单体设置；
所述防爆阀沿所述第一方向在所述凸起部上的正投影至少部分位于所述过气孔内。
在一些实施例中，所述电池单体的数量设有多个，每个所述电池单体的所述底壁的面 积为A mm2，所述凸起部沿所述第一方向在每个所述电池单体的所述底壁上的投影面积为B mm2，满足：
0.4≤B/A≤1。
在一些实施例中，所述箱体具有与所述第一方向相垂直的第二方向，所述第二方向为所述排气通道的延伸方向，所述过气孔的孔面积为E mm2，所述排气通道沿所述第二方向的截面积为F mm2，满足：
2/7＜E/F＜1/2。
在一些实施例中，所述底壁具有防爆孔，所述防爆孔沿所述第一方向正对所述过气孔，且所述防爆孔和所述过气孔密封连通，所述防爆阀盖封于所述防爆孔。
在一些实施例中，所述电池单体和所述过气孔的数量均设有多个，且一所述电池单体的所述防爆阀对应一所述过气孔。
在一些实施例中，所述箱体还包括：
梁体，所述梁体连接于所述底板和所述顶板之间，所述梁体设有汇流通道和泄压装置，所述汇流通道具有进气口和出气口，所述进气口连通于所述排气通道，和所述泄压装置盖封于所述出气口，其中，所述进气口设置于所述梁体靠近所述电池单体的一侧，所述出气口设置于梁体远离所述电池单体的一侧之间，所述泄压装置设于所述梁体背离所述电池单体的一侧。
在一些实施例中，所述凸起部沿着相交于所述第一方向的第二方向延伸，所述凸起部沿所述第二方向具有相对设置的第一端和第二端，所述第一端设有排气孔；
所述梁体设置于所述第一端，所述排气孔连通于所述排气通道和所述进气口之间。
在一些实施例中，所述容纳腔内设有多个所述电池单体，多个所述电池单体沿着第二方向排成一排，且所述容纳腔内沿第三方向设有多排所述电池单体，所述第一方向、所述第二方向、所述第三方向相交；
所述底板包括多个所述凸起部，多个所述凸起部沿着所述第三方向排布，且一所述凸起部与一排所述电池单体对应连接。
在一些实施例中，所述凸起部沿所述第三方向的两侧设有避让空间，所述避让空间连通所述容纳腔；
所述电池单体包括设置于所述底壁的极柱，所述电池包还包括汇流排，所述汇流排连接相邻两个所述电池单体的所述极柱，所述极柱和所述汇流排设于所述避让空间内。
在一些实施例中，所述极柱和所述板体之间具有间隙，所述汇流排设置于所述间隙内。
在一些实施例中，所述电池包还包括：
保护层，所述保护层连接于所述底壁和所述凸起部之间。
根据本申请的第二方面，本申请实施例提供一种用电设备，包括以上任一实施例所述的电池包。
本申请实施例的电池包包括：箱体，箱体具有第一方向，箱体包括沿第一方向相对设置的底板和顶板，底板包括相连接的板体和凸起部，凸起部相对于板体朝向顶板凸出，箱体具有容纳腔，容纳腔设置于底板和顶板之间；电池单体，电池单体设于容纳腔内，电池单体包括沿第一方向相对设置的底壁和顶壁，底壁设有防爆阀，底壁朝向底板设置且与凸起部相连接，顶壁与顶板相连接；凸起部具有排气通道和连通排气通道的过气孔，过气孔朝向电池单体设置；防爆阀沿第一方向在凸起部上的正投影至少部分位于过气孔内。该电池包通过在箱体底板设置朝向顶板凸出的凸起部，利用凸起部连接电池单体的底壁，电池单体的顶壁连接箱体的顶板，从而凸起部能够在电池单体的下方形成支撑，使得电池单体能够稳固的安装在箱体的容纳腔内，提升电池包的稳定性和安全性；在另一方面，通过在电池单体的底壁上设置防爆阀，且电池单体的底壁朝向箱体的底板设置，使得当电池单体发生热失控时，防爆阀能够朝向底板方向泄压排气，减少对电池包上方的冲击，提升安全性；并且，凸起部设置排气通道和过气孔，防爆阀在破阀时能够朝向过气孔泄压，进而排出的高温高压物质能够从排气通道排出，进一步保障电池包的安全性。
本申请实施例的用电设备可以包括上述电池包的所有技术特征和有益效果，在此不再赘述。
在阅读并理解了附图和详细描述后，可以明白其他方面。
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他的附图。
图1为本申请实施例提供的电池包的立体结构示意图；
图2为图1中电池包的零件爆炸结构示意图；
图3为本申请实施例的电池包沿另一角度观察的零件爆炸结构示意图；
图4为本申请实施例的电池包的主视结构示意图；
图5为图4中电池包沿A-A线的剖视结构示意图；
图6为图5中A区域的局部放大结构示意图；
图7为图5中剖视结构的立体视角示意图；
图8为图7中B区域的局部放大结构示意图；
图9为图4中电池包沿B-B线的剖视结构示意图；
图10为图9中C区域的局部放大结构示意图；
图11为图9中剖视结构的立体视角示意图；
图12为图11中D区域的局部放大结构示意图；
图13为本申请实施例的电池包中箱体的部分零件爆炸结构示意图；
图14为本申请实施例的电池包中电池单体的立体结构示意图；
附图标记：100-箱体；110-底板；111-板体；112-凸起部；113-排气通道；114-过气孔；115-排气孔；120-顶板；130-梁体；131-汇流通道；132-泄压装置；133-进气口；134-出气口；140-容纳腔；150-粘结层；160-避让空间；200-电池单体；210-底壁；220-顶壁；230-防爆阀；240-极柱；250-汇流排；260-防爆孔；300-保护层；310-绝缘层；320-阻燃隔热层。
本申请的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“长度”、“宽度”、“厚度”、“上”、“下”、“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。在本申请的描述中，“多个”的含义是两个或两个以上，至少一个指可以为一个、两个或者两个以上，除非另有明确具体的限定。
还需要说明的是，在本申请实施例的附图中，以标注X、Y、Z的箭头分别表示第一方向X、第二方向Y和第三方向Z，本申请的描述引入第一方向X、第二方向Y和第三方向Z是为了更清楚的表述该电池包中各部件的结构和相对位置关系，其中第一方向X、第二 方向Y和第三方向Z为彼此相交的三个相对方向，而非绝对方位，在实际应用中，第一方向X、第二方向Y和第三方向Z可以指向空间中的任意方位，只要保持三者的相交关系即可。可选地，第一方向X、第二方向Y和第三方向Z相互垂直。
本申请实施例提供一种电池包，该电池包能够实现电池单体的倒置安装，即能够避免对电池包上方形成安全隐患，又保障了电池单体安装的稳定性。
具体而言，请一并参阅图1、图2和图3，本申请实施例的电池包包括箱体100和电池单体200。其中，电池单体200为电池包的核心部件，用于存储和释放电能，箱体100则是用来保护和固定电池单体200的外壳，对电池单体200起到保护和支撑的作用，同时还能起到隔热、防水和防火的作用，确保电池的安全性能。
在本申请实施例中，箱体100包括沿第一方向X相对设置的底板110和顶板120，底板110包括板体111和凸起部112，板体111和凸起部112相连接，且凸起部112相对于板体111朝向顶板120凸出设置。箱体100内部具有容纳腔140，容纳腔140设置于底板110和顶板120之间。电池单体200设于容纳腔140内，电池单体200包括沿第一方向X相对设置的底壁210和顶壁220，底壁210设有防爆阀230，底壁210朝向底板110设置且与凸起部112相连接，顶壁220与顶板120相连接。
也就是说，在本申请实施例的电池包中，电池单体200的防爆阀230朝向箱体100的底板110，从而当出现热失控时，防爆阀230破阀会将高温高压气流向底板110方向排放，而不会冲击顶板120，避免对电池包上方产生冲击，降低安全风险。并且底板110的凸起部112连接电池单体200的底壁210，能够在下方对电池单体200形成支撑力，与此同时顶板120连接电池单体的顶壁220，从而能够与底板110的凸起部112共同作用将位于两者之间的电池单体200夹持固定住，进一步提升电池单体200的安装稳定性。
具体的，电池单体200包括壳体，壳体内部形成容纳空间，电池单体200的电极组件设置于容纳空间内。电池单体200的底壁210为壳体的一个部分，也即底壁210可以为壳体的任意一个壁，顶壁220则为壳体的与底壁210相对设置的另一个壁，底壁210和顶壁220可以为一体式结构，也可以为可拆卸结构或者焊接固定的结构。也就是说，壳体可以包括主体部分和盖部分，主体部分形成一端开口的容纳空间，盖部分通过可拆卸方式或者焊接方式连接主体部分并盖合在开口处，底壁210可以为盖部分，也可以为主体部分的其中任意一个壁，可根据实际需要进行具体的设置。
请参阅图2至图12，在一些实施例中，凸起部112具有排气通道113和连通排气通道 113的过气孔114，过气孔114朝向电池单体200设置；并且，防爆阀230沿第一方向X在凸起部112上的正投影至少部分位于过气孔114内。从而当防爆阀230破阀时，电池单体200内部高温高压气体通过防爆阀230向外排出，由于防爆阀230沿第一方向X在凸起部112上的正投影至少部分位于过气孔114内，使得至少部分高温高压气流会直接朝向过气孔114排放，进而得以经过底板110的凸起部112内的排气通道113迅速向外排出，气流的排放路径能够得到控制，避免对相邻的其他电池单体200造成影响，提升安全性。
在一种可选的实施例中，电池单体200的数量设有多个，每个电池单体200的底壁210的面积为A mm2，凸起部112沿第一方向X在每个电池单体200的底壁210上的投影面积为B mm2，满足：0.4≤B/A≤1，在这个比例区间，电池包可以满足振动测试，保证电池包内部结构的稳定性和安全性，具体请参阅如下测试表。
上表的振动测试按照国标GB 38031-2020电动汽车用动力蓄电池安全要求中8.2.1测试标准进行振动测试。
经过振动测试，满足以下要求即视为通过测试：
(1)不起火，不爆炸，热管理不漏液，电芯结构完好；
(2)连接可靠，结构完好，无外壳破裂，热管理功能完好(无脱胶)；
(3)绝缘电阻大于100Ω/V，漏电流小于1mA；
(4)测试过程中最小监控单元无电压锐变(电压差绝对值不大于0.15V)；
(5)气密性测试满足测试需求；
(6)试验后电池BMS功能应正常，不应出现电压、温度等采集错误的情况。
通过振动测试结果可知，在0.4≤B/A≤1这个比例区间，电池包可以满足振动测试，保证电池包内部结构的稳定性和安全性。
在一种实施例中，箱体100具有与第一方向X相垂直的第二方向Y，第二方向Y为排气通道113的延伸方向，过气孔114的孔面积为E mm2，排气通道113沿第二方向Y的截面积为F mm2，满足：2/7＜E/F＜1/2；在这个比例区间，电池包可以满足GB/T 31467.3-2015的安全测试，具体请参阅如下测试表。
通过安全测试结果可知，在2/7＜E/F＜1/2这个比例区间，电池包可以满足安全测试，保证电池包内部电池单体200爆阀时的排气安全。
进一步的，请一并结合图14，在一些实施例中，底壁210贯穿的设有防爆孔260，防爆孔260沿第一方向X正对过气孔114设置，并且防爆孔260和过气孔114密封连通，防爆阀230盖封于防爆孔260。从而当电池单体200发生热失控且防爆阀230破阀时，能够直接向着过气孔114喷射高温高压气流，气流能直接进入排气通道113而完全不会从防爆阀230和过气孔114之间的空间外溢，避免影响相邻电池单体200，进一步提升安全性。
进一步的，在一些实施例中，电池单体200和过气孔114的数量均设有多个，且一电池单体200的防爆阀230对应一过气孔114。从而，每个电池单体200均有一过气孔114与其对应，避免各电池单体200之间相互影响。示例性的，请一并结合图2和图3，多个电池单体200分别沿第二方向Y和第三方向Z阵列排布。沿第三方向Z设有多个凸起部112， 凸起部112沿着第二方向Y延伸，并且每个凸起部112均设有多个过气孔114，且多个过气孔114沿着第二方向Y间隔排列。在第一方向X上，每个电池单体200的防爆阀230正对一个过气孔114设置，从而任意一电池单体200发生热失控时，其防爆阀230泄压均能从对应的过气孔114排出，避免对其他电池单体200造成影响。
在一些实施例中，过气孔114垂直于第一方向X的截面面积为S1；防爆孔260垂直于第一方向X的截面面积为S2；满足：S1≥S2。从而在防爆阀230喷阀时，喷发物能够直接进入过气孔114，而不会被阻碍，保障泄压效率，提升安全性。
在一些实施例中，排气通道113沿着第二方向Y延伸，排气通道113垂直于第二方向Y的截面面积为S3；满足：S3≥S1。如此，在防爆阀230喷阀时，电池单体200的喷发物能更有效的疏导排出，有效避免喷阀速度大于疏导速度，避免造成喷发物堆积，降低安全隐患。
请一并参阅图2、图3和图13，在一些实施例中，箱体100还包括梁体130，梁体130连接于底板110和顶板120之间，梁体130设有汇流通道131和泄压装置132，汇流通道131具有进气口133和出气口134，进气口133连通排气通道113，泄压装置132盖封于出气口134，其中，进气口133设置于梁体130靠近电池单体200的一侧，出气口134设置于梁体130远离电池单体200的一侧。从而当电池单体200发生热失控时，自防爆阀230排出的高温高压气流经由排气通道113进入汇流通道131，并经由泄压装置132排出，由于泄压装置132位于背离电池单体200的一侧，泄压装置132排出的高温高压气体不会对电池单体200产生影响，保障安全性。具体的，梁体130采用多块板连接形成中空结构，汇流通道131为形成于梁体130内部的中空管道，梁体130与箱体100的底板110板体111连接固定，凸起部112的一端与梁体130密封连接，使得凸起部112内的排气通道113与梁体130内的汇流通道131连通。
具体的，在一些实施例中，凸起部112沿着第二方向Y延伸，凸起部112沿第二方向Y具有相对设置的第一端和第二端，第一端与梁体130密封连接，第一端设有排气孔115；梁体130设置于第一端，排气孔115连通于排气通道113和进气口133之间。因此进入排气通道113的气流能够经由排气孔115进入进气口133，并经由进气口133进入汇流通道131，最后经泄压装置132排出。进一步的，沿着第三方向Z，梁体130设有多个进气口133，每个进气口133对应一个凸起部112，且与对应的凸起部112上的排气孔115密封连通，从而沿第三方向Z间隔设置的多个排气通道113均与对应的进气口133连通，均能通过对应 的进气口133连通汇流通道131，进而排出的高温高压气流均能从汇流通道131流向泄压装置132，并经泄压装置132排出。
请一并参阅图2、图11和图12，在一些实施例中，容纳腔140内设有多个电池单体200，多个电池单体200沿着第二方向Y排成一排，且容纳腔140内沿第三方向Z设有多排电池单体200；底板110包括多个凸起部112，多个凸起部112沿着第三方向Z排布，且一凸起部112与一排电池单体200对应连接。从而，每一排电池单体200组成的模组，均有其对应的凸起部112予以支撑，特别是对于凸起部112内设置排气通道113的实施例，每一排电池单体200中的某一电池单体200发生热失控时，会优先从对应的排气通道113排出高温高压气流，能够避免对相邻排的电池单体200造成影响。
请一并参阅图9、图10、图11和图12，在一些实施例中，凸起部112沿第三方向Z的两侧设有避让空间160，避让空间160连通容纳腔140；电池单体200包括设置于底壁210的极柱240，电池包还包括汇流排250，汇流排250连接相邻两个电池单体200的极柱240，极柱240和汇流排250设于避让空间160内。通过在凸起部112两侧形成避让空间160，能够避让极柱240和汇流排250，从而为相邻电池单体200提供了连接的空间，方便电池单体200间的串并联，能够避免因凸起的极柱240和汇流排250影响电池单体200的固定，提升电池单体200安装的稳定性。并且，通过设置避让空间160一方面能够对极柱240和汇流排250进行避让，为电连接提供空间，减少了电池单体200在第一方向X上的空间占用；另一方面为电池包提供底部冲击空间，将电池包底部冲击空间、排气空间以及电连接空间叠合在一起，提升了电池包空间利用的合理性。
请再次参阅图12，在一些实施例中，极柱240和板体111之间具有间隙，汇流排250设置于间隙内。也即极柱240和底板110的板体111之间间隔设置形成间隙，为汇流排250留出了足够的空间，提升电池包空间利用的合理性。
需要说明的是，在上述实施例中，电池单体200的防爆阀230和极柱240均设置于底壁210，也就是说，电池单体200是完全倒置的。在该方案中，电池单体200的顶壁220与箱体100的顶板120采用胶粘的连接方式进行连接，对于胶粘连接方式而言，本身具备一定的固定效果，但是随着使用时间的推移或者电池包温度变化，胶粘连接的可靠性会降低。在本申请实施例中，由于凸起部112的设置，可在电池单体200的底部提供固定作用，减少对顶部连接的依赖，降低失效概率，可以提升电池可靠性，延长使用寿命。
进一步的，请一并结合图2和图3，在一些实施例中，电池包还包括保护层300，保护 层300连接于底壁210和凸起部112之间。保护层300用于进一步为电池包提供保护，增强电池包的安全性。
保护层300可以为单层结构，例如，保护层300可以为阻燃隔热层，如云母板或者喷涂层，可以起到对热失控时的进一步防护作用，因为当防爆阀230喷发时，反应物的温度极高，设置有阻燃隔热层作为保护层300，可以起到防止温度过高影响周围物质，避免起燃引火，进一步降低安全事故的发生风险。例如，保护层300还可以为绝缘层，绝缘层可以起到电气绝缘防护的作用，杜绝了电气间隙以及爬电距离的问题，同时防止绝缘失效导致短路问题的发生，从而影响整包电气安全。需要说明的是，电池单体200往往是设置有绝缘防护措施的，如外附绝缘蓝膜，绝缘顶盖等，但由于电池单体200需要受力夹持，可能在使用过程中出现绝缘破损，那么设置绝缘层作为保护层300，能够进一步提升其绝缘防护的性能。
当然，保护层300可以为多层的叠层结构。也就是说，例如上述的阻燃隔热层和绝缘层可以结合，即两者之间的隔层设置。当然，也可以设置一层保护层300同时具有绝缘和隔热阻燃功能。
此外，保护层300还可以包括粘结层，进一步固定电池单体200与底板110的连接。并且电池单体200和顶板120之间也可以设置粘结层150，利用粘结层150强化顶板120和电池单体200的连接，提升电池单体200的安装稳定性。
相应的，本申请实施例提供的一种用电设备，该用电设备可以是新能源汽车、计算机、储能供电装置等各种类型的设备，可以理解的是，该用电设备可以包括上述电池包的所有技术特征和有益效果，在此不再赘述。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的电池包及用电设备进行了详细介绍，并应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (15)

  1. 一种电池包，其中，包括：
    箱体，所述箱体具有第一方向，所述箱体包括沿所述第一方向相对设置的底板和顶板，所述底板包括相连接的板体和凸起部，所述凸起部相对于所述板体朝向所述顶板凸出，所述箱体具有容纳腔，所述容纳腔设置于所述底板和所述顶板之间；
    电池单体，所述电池单体设于所述容纳腔内，所述电池单体包括沿所述第一方向相对设置的底壁和顶壁，所述底壁设有防爆阀，所述底壁朝向所述底板设置且与所述凸起部相连接，所述顶壁与所述顶板相连接；
    所述凸起部具有排气通道和连通所述排气通道的过气孔，所述过气孔朝向所述电池单体设置；
    所述防爆阀沿所述第一方向在所述凸起部上的正投影至少部分位于所述过气孔内。
  2. 根据权利要求1所述的电池包，其中，所述电池单体的数量设有多个，每个所述电池单体的所述底壁的面积为A mm2，所述凸起部沿所述第一方向在每个所述电池单体的所述底壁上的投影面积为B mm2，满足：
    0.4≤B/A≤1。
  3. 根据权利要求1所述的电池包，其中，所述箱体具有与所述第一方向相垂直的第二方向，所述第二方向为所述排气通道的延伸方向，所述过气孔的孔面积为E mm2，所述排气通道沿所述第二方向的截面积为F mm2，满足：
    2/7＜E/F＜1/2。
  4. 根据权利要求1所述的电池包，其中，所述底壁具有防爆孔，所述防爆孔沿所述第一方向正对所述过气孔，且所述防爆孔和所述过气孔密封连通，所述防爆阀盖封于所述防爆孔。
  5. 根据权利要求4所述的电池包，其中，所述电池单体和所述过气孔均设有多个，且一所述电池单体的所述防爆阀对应一所述过气孔。
  6. 根据权利要求1所述的电池包，其中，所述箱体还包括：
    梁体，所述梁体连接于所述底板和所述顶板之间，所述梁体设有汇流通道和泄压装置，所述汇流通道具有进气口和出气口，所述进气口连通所述排气通道，所述泄压装置盖封于所述出气口，所述进气口设置于所述梁体靠近所述电池单体的一侧，所述出气口设置于梁 体远离所述电池单体的一侧。
  7. 根据权利要求6所述的电池包，其中，所述凸起部沿着相交于所述第一方向的第二方向延伸，所述凸起部沿所述第二方向具有相对设置的第一端和第二端，所述第一端设有排气孔；
    所述梁体设置于所述第一端，所述排气孔连通于所述排气通道和所述进气口之间。
  8. 根据权利要求1至7中任一项所述的电池包，其中，所述容纳腔内设有多个所述电池单体，多个所述电池单体沿着第二方向排成一排，且所述容纳腔内沿第三方向设有多排所述电池单体，所述第一方向、所述第二方向、所述第三方向相交；
    所述底板包括多个所述凸起部，多个所述凸起部沿着所述第三方向排布，且一所述凸起部与一排所述电池单体对应连接。
  9. 根据权利要求8所述的电池包，其中，所述凸起部沿所述第三方向的两侧设有避让空间，所述避让空间连通所述容纳腔；
    所述电池单体包括设置于所述底壁的极柱，所述电池包还包括汇流排，所述汇流排连接相邻两个所述电池单体的所述极柱，所述极柱和所述汇流排设于所述避让空间内。
  10. 根据权利要求9所述的电池包，其中，所述极柱和所述板体之间具有间隙，所述汇流排设置于所述间隙内。
  11. 根据权利要求8所述的电池包，其中，所述电池包还包括：
    保护层，所述保护层连接于所述底壁和所述凸起部之间。
  12. 根据权利要求11所述的电池包，其中，所述保护层包括：
    阻燃隔热层，所述阻燃隔热层被配置为在所述底壁和所述凸起部之间隔热阻燃。
  13. 根据权利要求11所述的电池包，其中，所述保护层包括：
    绝缘层，所述绝缘层被配置为在所述底壁和所述凸起部之间绝缘防护。
  14. 根据权利要求11所述的电池包，其中，所述保护层包括：
    粘结层，所述粘结层被配置为粘结所述电池单体和所述底板。
  15. 一种用电设备，其中，包括权利要求1至14中任一项所述的电池包。
PCT/CN2024/115635 2023-10-31 2024-08-29 电池包及用电设备 Pending WO2025092199A1 (zh)

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