WO2021196772A1 - 箱体、电池组及装置 - Google Patents

箱体、电池组及装置 Download PDF

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Publication number
WO2021196772A1
WO2021196772A1 PCT/CN2020/139626 CN2020139626W WO2021196772A1 WO 2021196772 A1 WO2021196772 A1 WO 2021196772A1 CN 2020139626 W CN2020139626 W CN 2020139626W WO 2021196772 A1 WO2021196772 A1 WO 2021196772A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
box
protective member
protrusion
protection
Prior art date
Application number
PCT/CN2020/139626
Other languages
English (en)
French (fr)
Inventor
姜利文
许金梅
方伍梅
Original Assignee
江苏时代新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏时代新能源科技有限公司 filed Critical 江苏时代新能源科技有限公司
Priority to EP20929153.3A priority Critical patent/EP4027436A4/en
Priority to KR1020227026165A priority patent/KR102691489B1/ko
Priority to JP2022540861A priority patent/JP7404543B2/ja
Publication of WO2021196772A1 publication Critical patent/WO2021196772A1/zh
Priority to US17/715,079 priority patent/US12057595B2/en

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/249—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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • 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

  • This application relates to the field of battery technology, in particular to a box, a battery pack and a device.
  • the mounted part of the battery pack belongs to the boundary of the battery pack, and ensuring the performance and integrity of the battery pack is essential to the safety of the entire vehicle.
  • the part of the battery pack in the related technology is exposed outside the battery pack. Therefore, when the car loses control or crashes, this part is also the most prone to failure, which in turn causes the battery pack to be squeezed, resulting in the battery pack and the entire vehicle. The poor safety performance follows.
  • the present application provides a box, a battery pack and a device, which alleviate the problem that the mounting part of the battery pack is prone to failure when the entire vehicle collides.
  • the first aspect of the embodiments of the present application provides a box, which includes:
  • the frame member is used to form the accommodating cavity.
  • the fixing member is used for installing the box body, and the fixing member is connected to the frame member.
  • the protective member is used to connect the frame member, and the protective member includes a hollow portion, and at least part of the fixing member is accommodated in the hollow portion.
  • the protective member includes a first protective member and a second protective member, and the first protective member and the second protective member are connected to each other to form the hollow portion.
  • the protective member With a hollow part, even if the automobile is squeezed by a side impact, the protective member is squeezed first, and the protective member bears the squeezing force. At the same time, the protective member is provided with a hollow part, which can resist the squeezing force of the side impact.
  • the function of absorption and buffering improves the ability to resist side impact and squeezing, which effectively guarantees the performance and integrity of the battery pack.
  • the problem that the mounting part of the battery pack is prone to failure when the entire vehicle is in a collision is alleviated, and the safety performance of the battery pack and the entire vehicle is improved.
  • first protection member and the second protection member are provided separately, which has the advantage of higher strength compared with the integrally formed protection member.
  • the first protection member and the second protection member are separately provided independently, and the first protection member and the second protection member The joint of the two protective members can withstand a relatively high squeezing force, thereby greatly improving the ability of the protective member to resist side impact and squeeze.
  • the fixing member is connected to the outer circumference of the frame member.
  • the fixing member is connected to the outer periphery of the frame member, and the protective member is used to connect the frame member, and the hollow part of the protective member accommodates at least part of the fixing member, and then the fixing member and the protective member are both connected to the outer periphery of the frame member;
  • the protection member is squeezed first, and the protection member bears the squeezing force.
  • the protection member is provided with a hollow part, which can absorb and buffer the side impact squeezing force, improve the ability to resist side impact squeeze, and effectively This guarantees the performance and integrity of the battery pack.
  • the first protection member includes a first protrusion, and the first protrusion is arranged to protrude away from the second protection member, and the first protrusion and the corresponding A portion of the second shield member forms the hollow portion.
  • the first protruding part is arranged to protrude away from the second protective member, so it is convenient to form a hollow part for accommodating the fixing member.
  • the provision of the first protruding part can improve the performance of the first protective member. Strength, thereby improving the strength of the entire protective member, thereby improving the ability to resist side impact extrusion, effectively ensuring the performance and integrity of the battery pack.
  • the second protection member includes a second protrusion, and the second protrusion protrudes toward the first protection member.
  • the strength of the second protection member can be improved by the arrangement of the second protrusion, and thus the strength of the entire protection member.
  • the second protrusion is arranged protruding toward the first protection member, which can reduce the overall protection member's strength. Volume, reducing the volume of the entire battery pack.
  • the second protrusion and the first protective member are arranged in close contact with each other.
  • the second protrusion and the first protective member are arranged in close contact with each other, which can increase the strength of the joint. After the side impact compression occurs, the protective member is not easily deformed, and the resistance is improved. The ability to squeeze by side impact guarantees the safety performance of the battery pack.
  • the fixing member includes a hanging part for fixing the box body, and the hanging part is accommodated in the hollow part.
  • the mounting part in this embodiment is used to mount the box on the car, and the mounting part is accommodated in the hollow part.
  • the hollow part can play a buffering role to avoid mounting
  • the battery pack is directly impacted, which improves the ability of the battery pack to resist side impact and squeeze.
  • the top of the mounting part is arranged in close contact with the protective member; and/or the bottom of the hanging part is arranged in close contact with the protective member.
  • the top or bottom of the mounting part is arranged in close contact with the protective member, which can play a role in supporting the hollow part.
  • both the top and bottom of the mounting part are attached to the protective member. Since the mounting part is located in the hollow part, the mounting part and the protective member can be arranged in close contact with the hollow part to support the hollow part, and at the same time, the strength of the protective member can be strengthened.
  • the mounting portion includes a third protrusion, and the third protrusion protrudes toward the first protection member, and there is a gap between the third protrusion and the first protection member.
  • the strength of the mounting portion can be improved by the arrangement of the third protrusion, and the protrusion direction of the third protrusion is consistent with the protrusion direction of the first protrusion, which can save the space of the protective member.
  • the second aspect of the embodiments of the present application provides a battery pack, the box body; and a battery housed in the accommodating cavity of the box body.
  • the battery pack in this embodiment includes the above-mentioned box, it effectively guarantees the performance and integrity of the battery pack, alleviates the problem that the mounting part of the battery pack is prone to failure in the event of a collision of the whole vehicle, and improves the battery pack and the integrity of the battery pack.
  • the safety performance of the car since the battery pack in this embodiment includes the above-mentioned box, it effectively guarantees the performance and integrity of the battery pack, alleviates the problem that the mounting part of the battery pack is prone to failure in the event of a collision of the whole vehicle, and improves the battery pack and the integrity of the battery pack. The safety performance of the car.
  • a third aspect of the embodiments of the present application provides a device including a battery pack, and the battery pack is used to provide electrical energy.
  • the device in this embodiment adopts the above-mentioned battery pack, it effectively guarantees the performance and integrity of the battery pack, alleviates the problem of easy failure of the mounted part of the battery pack when the entire vehicle collides, and improves the battery pack and the entire vehicle. The safety performance.
  • Figure 1 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a battery pack provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a box provided by an embodiment of the present application.
  • Figure 4 is a bottom view of a box provided by an embodiment of the present application.
  • Figure 5 is a cross-sectional view based on A-A shown in Figure 4.
  • Fig. 6 is a schematic structural diagram of a frame member of a box provided by an embodiment of the present application.
  • Fig. 7 is a partial enlarged view based on Fig. 6;
  • Figure 8 is a top view of the first protective member of the box provided by the embodiment of the present application.
  • Figure 9 is a bottom view of the second protective member of the box provided by the embodiment of the present application.
  • Fig. 10 is a partial enlarged view based on the figure shown in Fig. 9.
  • FIG. 1 is a schematic structural diagram of a device provided by an embodiment of this application
  • FIG. 2 is a schematic structural diagram of a battery pack P provided by an embodiment of this application.
  • the embodiment of the present application provides a device, which can be a mobile device such as a vehicle, an energy storage cabinet, a ship, a small aircraft, etc.
  • the device includes a power source, and the power source is used for The device provides the driving force.
  • the driving force of the device can be all electric energy, or it can include electric energy and other energy sources (such as mechanical energy)
  • the power source can be the battery module L (or battery pack P)
  • the power source can also be the battery module L (or Battery pack P) and engine, etc. Therefore, any device capable of using the battery module L (or battery pack P) to provide electrical energy is within the protection scope of the present application.
  • the vehicle in the embodiment of the present application may be a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle, etc.
  • the vehicle may include a battery pack P and a vehicle body.
  • the battery pack P is arranged on the vehicle body.
  • the vehicle body is also provided with a drive motor, and the drive motor is electrically connected to the battery pack P.
  • the battery pack P provides electrical energy to drive the motor.
  • the transmission mechanism is connected with the wheels on the vehicle body to drive the vehicle to travel.
  • the battery pack P may be horizontally arranged at the bottom of the vehicle body.
  • a battery pack P provided in this embodiment includes a box M and a battery module L provided in the box M.
  • the battery module L includes a plurality of batteries, wherein the battery may be a secondary battery that can be repeatedly charged and discharged.
  • the plurality of batteries are located in the inner cavity of the box M and stacked on each other in the inner cavity, and the stacking direction may be the length direction , Width direction or height direction.
  • the battery includes an electrode assembly, a top cover assembly and a casing.
  • the casing can be a hexahedron shape or other shapes.
  • a cavity is formed inside the casing for accommodating the electrode assembly and electrolyte.
  • the electrode assembly consists of a positive electrode.
  • the sheet, the negative pole piece, and the separator are wound or laminated; one end of the housing is opened so that the electrode assembly can be placed in the cavity of the housing through the opening, and multiple electrode assemblies can be arranged in the cavity, and multiple electrode assemblies Stacked on top of each other.
  • the housing may include metal materials, such as aluminum or aluminum alloy, and may also include insulating materials, such as plastic.
  • the box body M has an open top structure and includes an upper box cover.
  • the size of the upper box cover is equivalent to the size of the opening on the top of the box body M.
  • the upper box cover can be fixed on Open up.
  • a sealing element may be provided between the upper box cover and the box body M.
  • the box M can be made of aluminum, aluminum alloy or other metal materials.
  • the box M has a containing cavity 11 in which multiple batteries can be accommodated.
  • the multiple batteries can form a battery module L.
  • the battery module L is in the box.
  • the inside of the body M can be arranged side by side along the length direction (X) of the battery pack P, or can be arranged side by side along the width direction (Y) of the battery pack P, and each battery module L is fixed to the box body M.
  • the mounted part of the battery pack P belongs to the boundary of the battery pack P, this part is most prone to failure when the entire vehicle collides, but the mounted part is exposed outside the battery pack P, and there is no protective structure to protect it. Therefore, when the car loses control or crashes, the mounted part is most likely to collide and deform. At the same time, the box M will be squeezed, which will cause the battery module L to be squeezed, which is prone to danger and poor safety performance.
  • FIG. 3 is a schematic structural diagram of a box M provided by an embodiment of this application
  • FIG. 4 is a bottom view of a box M provided by an embodiment of this application
  • FIG. 5 is a cross-sectional view based on A-A shown in FIG. 4.
  • this embodiment provides a box M for the battery pack P, which includes a frame member 1, a fixing member 3, and a protective member 2, wherein the frame member 1 is used to form a receiving cavity 11 ,
  • the fixing member 3 is used to install the box M, and the fixing member 3 is connected to the frame member 1, the protective member 2 is used to connect the frame member 1, and the protective member 2 includes a hollow portion 23, and at least part of the fixing member 3 is accommodated in the hollow portion twenty three.
  • the provision of the protective member 2 with the hollow part 23 alleviates the problem that the mounting part of the battery pack P is prone to failure when the entire vehicle collides, and improves the safety performance of the battery pack P and the entire vehicle.
  • the fixing member 3 Since the fixing member 3 is used to mount the frame member 1 on the car, it is the mounting part of the battery pack P.
  • a protective member 2 with a hollow portion 23 is provided.
  • the hollow portion 23 of the protective member 2 accommodates at least a part of the fixing member 3 to protect the fixing member 3. Therefore, after a side impact extrusion, the protective member 2
  • the protective member 2 is squeezed first, and the protective member 2 bears the squeezing force.
  • the protective member 2 is provided with a hollow part 23, which can absorb and buffer the squeezing force, improve the ability to resist side impact and squeeze, and effectively protect the battery
  • the performance and integrity of Group P improve the safety performance of the vehicle.
  • a reinforcing plate 12 is provided at the bottom of the frame member 1 to support the battery module L and play a role of reinforcement.
  • the fixing member 3 is a structure in which the reinforcing plate 12 extends along the width direction (Y) of the box M.
  • the box body M includes a cross beam 13 and a longitudinal beam 14.
  • the cross beam 13 and the longitudinal beam 14 divide the frame member 1 into a plurality of accommodating cavities 11, and the battery module L can be accommodated in the accommodating cavity 11.
  • the cross beam 13 and the longitudinal beam 14 are respectively fixedly connected to the battery module L, and the battery module L is fixed in the accommodating cavity 11 of the box M to prevent the battery module L from loosening.
  • the protective member 2 in the embodiment of the present application includes a first protective member 21 and a second protective member 22, and the first protective member 21 and the second protective member 22 are connected to each other to form a hollow portion 23.
  • the first protection member 21 and the second protection member 22 are arranged up and down, and form a hollow portion 23 for accommodating the fixing member 3.
  • the first protection member 21 and the second protection member 22 are provided separately.
  • the first protection member 21 and the second protection member 22 are provided independently, and the first protection member The connection between the member 21 and the second protective member 22 can withstand a relatively high squeezing force, thereby greatly improving the ability of the protective member 2 to resist the side impact squeezing.
  • the first protective member 21 includes a first connector 213, and the second protective member 22 includes a second connector 224.
  • the first connector 213 and the second connector 224 are connected to form the protective member 2.
  • the two connectors are arranged , Can improve the ability of the protective member 2 to withstand the squeezing force.
  • the first connecting piece 213 and the second connecting piece 224 are respectively fixedly connected to the frame member 1 to fix the first protective member 21 and the second protective member 22 to the box M, respectively, to improve the structural strength.
  • the first protection member 21 includes a first protrusion 211, and the first protrusion 211 is protrudingly disposed away from the second protection member 22, and the first protrusion 211 is corresponding to the second protection member 22.
  • the part of the member 22 forms a hollow portion 23.
  • the first protrusion 211 is arranged to protrude away from the second protection member 22, so it is convenient to form the hollow part 23 for accommodating the fixing member 3.
  • the arrangement of the first protrusion 211 can improve the performance of the first protection member 21. The strength, thereby increasing the strength of the entire protective member 2 and further improving the ability to resist side impact extrusion, effectively guarantees the performance and integrity of the battery pack P.
  • the second protection member 22 includes a second protrusion 222, and the second protrusion 222 protrudes toward the first protection member 21.
  • the arrangement of the second protrusion 222 can increase the strength of the second protection member 22, thereby increasing the strength of the entire protection member 2.
  • the second protrusion 222 is arranged protruding toward the first protection member 21, which can reduce the entire protection member.
  • the volume of 2 reduces the volume of the entire battery pack P.
  • the second protrusion 222 and the first protective member 21 are arranged in close contact with each other, which can increase the strength of the joint. After the side impact compression occurs, the protective member 2 there is not easily deformed, and the resistance side is improved. The ability to collide and squeeze ensures the safety performance of the battery pack P.
  • the second protrusion 222 includes a body 222a and an extension 222b, and the body 222a and the extension 222b are in communication; wherein the body 222a extends along the length direction (X) of the box M, and the extension 222b extends along the box. M extends in the width direction (Y), and the arrangement of the extension 222b can enhance the energy absorption and buffering effects of the protective member 2 and improve the ability to resist side impact compression.
  • the second protection member 22 further includes a beam main body 221, the beam main body 221 is arranged corresponding to the first protrusion 211, and forms a hollow portion 23 for accommodating the fixing member 3.
  • the first protective member 21 further includes a fourth raised portion 212, the fourth raised portion 212 and the first raised portion 211 are spaced apart, and the fourth raised portion 212 and the second raised portion 222 are arranged in close contact with each other to improve the protective member The intensity of 2.
  • FIG. 6 is a schematic structural diagram of the frame member 1 of the box M provided by an embodiment of the application
  • FIG. 7 is a partial enlarged view based on FIG. 6.
  • the fixing member 3 includes a hanging part 31 for fixing the box M, and the hanging part 31 is accommodated in the hollow part 23.
  • the mounting part 31 is used to mount the box M on the car, and the mounting part 31 is accommodated in the hollow part 23.
  • the hollow part 23 can be provided as a buffer to avoid mounting
  • the portion 31 is directly impacted, which improves the ability of the battery pack P to resist side impact compression.
  • the mounting portion 31 includes a third protruding portion 311, the third protruding portion 311 is protrudingly arranged toward the first protective member 21, and there is a gap between the third protruding portion 311 and the first protective member 21, leaving a gap The gap is used to install the bushing.
  • the arrangement of the third protrusion 311 can increase the strength of the mounting portion 31, and the protrusion direction of the third protrusion 311 is consistent with the protrusion direction of the first protrusion 211, which can save the space of the protective member 2.
  • the top or bottom of the mounting portion 31 is arranged in close contact with the protective member 2 to support the hollow portion 23.
  • both the top and bottom of the mounting portion 31 are attached to the protective member 2. Since the mounting portion 31 is located in the hollow portion 23, the mounting portion 31 and the protective member 2 are arranged so as to support the hollow portion 23 and strengthen the strength of the protective member 2 at the same time.
  • the mounting portion 31 is configured as a bent structure, which can further improve the strength of the mounting portion 31.
  • the first protrusion 211 is provided with a first through hole 211a
  • the second protection member 22 is provided with a second through hole 223
  • the third protrusion 311 is provided with a third through hole 312
  • the first through-hole 211a, the second through-hole 223, and the third through-hole 312 are correspondingly arranged, and are used to allow bolts to pass through and mount the battery pack P on the car.
  • the fixing member 3 is connected to the outer periphery of the frame member 1.
  • the fixing member 3 is connected to the outer periphery of the frame member 1, and the protective member 2 is used to connect the frame member 1, and the hollow part of the protective member 2 accommodates at least part of the fixing member 3, and the fixing member 3 and the protective member 2 are both connected to the frame member
  • the protective member 2 is provided with a hollow portion 23, which can absorb and buffer the side impact squeezing force The role of, improves the ability to resist side impact extrusion, and effectively guarantees the performance and integrity of the battery pack P.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Inorganic Chemistry (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

一种箱体(M)、电池组(P)及装置，涉及储能器件技术领域。该箱体(M)包括框架构件(1)、固定构件(3)和防护构件(2)，框架构件(1)用于形成容纳腔(11)；固定构件(3)用于安装所述箱体(M)，且所述固定构件(3)连接于所述框架构件(1)；以及防护构件(2)用于连接所述框架构件(1)，且所述防护构件(2)包括中空部(23)，至少部分的固定构件(3)容纳于所述中空部(23)。电池组(P)包括所述的箱体(M)和收容于所述箱体(M)的所述容纳腔(11)内的电池。装置包括所述的电池组(P)，所述电池组(P)用于提供电能。通过带有中空部(23)的防护构件(2)的设置，缓解了整车发生碰撞时电池组挂载部分容易失效的问题，提高了电池组和整车的安全性能。

Description

箱体、电池组及装置
相关申请的交叉引用
本申请要求享有于2020年03月31日提交的名称为“箱体、电池组及装置”的中国专利申请202010244822.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，特别是涉及一种箱体、电池组及装置。
背景技术
新能源汽车的市场需求，促进了新能源汽车的蓬勃发展。在电池组结构设计中需确保设计的可靠性。一般来说，电池组挂载的部分是属于电池组的边界，保障电池组的性能和完好性，对于整车的安全性至关重要。但是相关技术中电池组挂载的部分裸露在电池组的外部，因此当汽车失控或发生碰撞时，这部分也是最容易发生失效的部分，进而使电池组被挤压，导致电池组及整车的安全性能不佳随着。
发明内容
本申请提供了一种箱体、电池组及装置，缓解了整车发生碰撞时电池组挂载部分容易失效的问题。
本申请实施例的第一方面提供了一种箱体，其包括：
框架构件，用于形成容纳腔。
固定构件，用于安装所述箱体，且所述固定构件连接于所述框架构 件。
防护构件，用于连接所述框架构件，且所述防护构件包括中空部，至少部分的所述固定构件容纳于所述中空部。
所述防护构件包括第一防护构件和第二防护构件，所述第一防护构件与所述第二防护构件相互连接以形成所述中空部。
通过带有中空部的防护构件的设置，即使汽车侧撞挤压，也是防护构件先被挤压，防护构件承受挤压力，同时防护构件设置有中空部，能够对侧撞挤压力起到吸收和缓冲的作用，提高抵抗侧撞挤压的能力，有效的保障了电池组的性能和完好性。缓解了整车发生碰撞时电池组挂载部分容易失效的问题，提高了电池组和整车的安全性能。
另外，第一防护构件和第二防护构件分体设置，相较于一体成型的防护构件，具有强度高的优点，第一防护构件和第二防护构件分别独立设置，且第一防护构件和第二防护构件的连接处能够承受较高的挤压力，进而大幅度的提高了防护构件抵抗侧撞挤压的能力。
在一些实施例中，固定构件连接于框架构件的外周。
固定构件连接于框架构件的外周，而防护构件用于连接框架构件，且防护构件具有的中空部容纳至少部分固定构件，进而固定构件和防护构件均连接于框架构件的外周；即使汽车侧撞挤压，也是防护构件先被挤压，防护构件承受挤压力，同时防护构件设置有中空部，能够对侧撞挤压力起到吸收和缓冲的作用，提高抵抗侧撞挤压的能力，有效的保障了电池组的性能和完好性。
在一些实施例中，所述第一防护构件包括第一凸起部，所述第一凸起部朝向远离所述第二防护构件凸出设置，所述第一凸起部与对应的所述第二防护构件的部分形成所述中空部。
在本实施例中，通过第一凸起部朝向远离第二防护构件凸出设置， 因此便于形成中空部，用于容纳固定构件，同时由于第一凸起部的设置能够提高第一防护构件的强度，进而提高整个防护构件的强度，进而提高了抵抗侧撞挤压的能力，有效的保障了电池组的性能和完好性。
在一些实施例中，所述第二防护构件包括第二凸起部，所述第二凸起部朝向所述第一防护构件凸出设置。
本实施例通过第二凸起部的设置能够提高第二防护构件的强度，进而提高整个防护构件的强度，同时第二凸起部朝向第一防护构件凸出设置，能够减小整个防护构件的体积，减少了整个电池组的体积。
在一些实施例中，所述第二凸起部与所述第一防护构件贴合设置。
在本实施例中，通过第二凸起部与第一防护构件贴合设置，能够提高贴合处的强度，在发生侧撞挤压后，该处的防护构件不容易发生变形，提高了抵抗侧撞挤压的能力，保障了电池组的安全性能。
在一些实施例中，所述固定构件包括挂载部，用于固定所述箱体，所述挂载部容纳于所述中空部。
本实施例中的挂载部用于将箱体挂载于汽车，且挂载部容纳于中空部，当发生侧撞挤压后，通过中空部的设置能够起到缓冲的作用，避免挂载部直接被撞击，提高了电池组抵抗侧撞挤压的能力。
在一些实施例中，所述挂载部的顶部与所述防护构件贴合设置；和/或所述挂载部的底部与所述防护构件贴合设置。
在本实施例中，挂载部的顶部或底部与防护构件贴合设置，能够起到支撑中空部的作用。
或者，挂载部的顶部和底部均与防护构件贴合设置。由于挂载部位于中空部，因此挂载部与防护构件贴合设置能够对中空部起到支撑的作用，同时还能够加强防护构件的强度。
所述挂载部包括第三凸起部，所述第三凸起部朝向所述第一防护构 件凸出设置，且所述第三凸起部与所述第一防护构件之间具有间隙。
本实施例中，通过第三凸起的设置能够提高挂载部的强度，而且第三凸起部的凸出方向与第一凸起部的凸出方向一致，能够节省防护构件的空间。
且第三凸起部与第一防护构件之间具有间隙，该间隙用于安装衬套。
本申请实施例的第二方面提供了一种电池组，所述的箱体；和收容于所述箱体的所述容纳腔内的电池。
由于本实施例中的电池组包括上述的箱体，因此有效的保障了电池组的性能和完好性，缓解了整车发生碰撞时电池组挂载部分容易失效的问题，提高了电池组和整车的安全性能。
本申请实施例的第三方面提供一种装置，包括电池组，所述电池组用于提供电能。
由于本实施例中的装置采用上述的电池组，因此有效的保障了电池组的性能和完好性，缓解了整车发生碰撞时电池组挂载部分容易失效的问题，提高了电池组和整车的安全性能。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述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，还可以根据附图获得其他的附图。
图1是本申请实施例所提供的装置的结构示意图；
图2是本申请实施例所提供的电池组的结构示意图；
图3是本申请实施例所提供的箱体的结构示意图；
图4是本申请实施例所提供的箱体的仰视图；
图5是基于图4所示A-A的剖视图；
图6是本申请实施例所提供的箱体的框架构件的结构示意图；
图7是基于图6所示的局部放大图；
图8是本申请实施例所提供的箱体的第一防护构件俯视图；
图9是本申请实施例所提供的箱体的第二防护构件仰视图；
图10是基于图9所示的局部放大图。
在附图中，附图并未按照实际的比例绘制。
标记说明：
P-电池组；
L-电池模块；
M-箱体；
1-框架构件；
11-容纳腔；
12-加强板；
13-横梁；
14-纵梁；
2-防护构件；
21-第一防护构件；
211-第一凸起部；
211a-第一通孔；
212-第四凸起部；
213-第一连接件；
22-第二防护构件；
221-梁主体；
222-第二凸起部；
222a-本体；
222b-延伸部；
223-第二通孔；
224-第二连接件；
23-中空部；
3-固定构件；
31-挂载部；
311-第三凸起部；
312-第三通孔。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指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”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
下述描述中出现的方位词均为图中示出的方向，并不是对本申请的具体结构进行限定。在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具 体情况理解上述术语在本申请中的具体含义。
在一种具体实施例中，下面通过具体的实施例并结合附图对本申请做进一步的详细描述。
图1为本申请实施例所提供的装置的结构示意图；图2为本申请实施例所提供的电池组P的结构示意图。如图1和图2所示，本申请实施例提供了一种装置，该装置可以是车辆、储能电柜、船舶、小型飞机等移动设备，该装置包括动力源，该动力源用于为装置提供驱动力。其中，该装置的驱动力可全部为电能，也可包括电能和其他能源(例如机械能)，该动力源可为电池模块L(或电池组P)，该动力源也可为电池模块L(或电池组P)和发动机等。因此，只要能够使用电池模块L(或电池组P)提供电能的装置均在本申请的保护范围内。
以车辆为例，本申请实施例中的车辆可为新能源汽车，该新能源汽车可为纯电动汽车，也可为混合动力汽车或增程式汽车等。其中，该车辆可包括电池组P和车辆主体，该电池组P设置于车辆主体，该车辆主体还设置有驱动电机，且驱动电机与电池组P电连接，由电池组P提供电能，驱动电机通过传动机构与车辆主体上的车轮连接，从而驱动车辆行进。具体地，该电池组P可水平设置在车辆主体的底部。
如图2所示，本实施例提供的一种电池组P，包括箱体M以及设置在箱体M的电池模块L。电池模块L包括多个电池，其中，电池可以为能够重复充放电使用的二次电池，多个电池位于箱体M的内腔，并在该内腔中相互堆叠设置，堆叠方向可为长度方向、宽度方向或高度方向。
电池包括电极组件、顶盖组件和壳体，其中，壳体可为六面体形，也可为其他形状，且该壳体内部形成腔体，用于容纳电极组件和电解液，电极组件由正极极片、负极极片、隔离膜卷绕或层叠形成；壳体的一端开口，使得电极组件可通过该开口放置于壳体的腔体，且腔体内可设置有多个电极组件，多个电极组件相互堆叠。其中，壳体可包括金属材料，例如铝或铝合金等，也可包括绝缘材料，例如塑胶等。
在一种可能的设计中，箱体M为顶部敞开的结构，并包括上箱盖，上箱盖的尺寸与箱体M顶部的开口的尺寸相当，上箱盖可通过螺栓等固定 件固定在开口。同时，为了提高箱体M的密封性，在上箱盖与箱体M之间还可设置密封件。
其中，箱体M可由铝、铝合金或其他金属材料制成，箱体M具有容纳腔11，容纳腔11内可容置多个电池，多个电池可以形成电池模块L，电池模块L在箱体M内可以沿电池组P的长度方向(X)并排设置，也可以沿电池组P的宽度方向(Y)并排设置，且各电池模块L与箱体M固定。
相关技术中，由于电池组P挂载的部分是属于电池组P的边界，整车发生碰撞时这部分最容易发生失效，但是挂载的部分裸露在电池组P的外部，没有防护结构进行保护，因此当汽车失控或发生碰撞时，挂载的部分最容易发生碰撞而变形，同时还会对箱体M进行挤压，进而导致电池模块L被挤压，容易发生危险，安全性能不佳。
图3为本申请实施例所提供的箱体M的结构示意图；图4为本申请实施例所提供的箱体M的仰视图；图5为基于图4所示A-A的剖视图。如图3-图5所示，本实施例提供了一种用于电池组P的箱体M，包括框架构件1、固定构件3和防护构件2，其中，框架构件1用于形成容纳腔11，固定构件3用于安装箱体M，且固定构件3连接于框架构件1，防护构件2用于连接框架构件1，且防护构件2包括中空部23，至少部分的固定构件3容纳于中空部23。通过带有中空部23的防护构件2的设置，缓解了整车发生碰撞时电池组P挂载部分容易失效的问题，提高了电池组P和整车的安全性能。
由于固定构件3用于将框架构件1挂载于汽车上，即为电池组P的挂载部分，汽车侧撞挤压时，会挤压固定构件3，进而对框架构件1及电池模块L进行挤压，因此设置有带有中空部23的防护构件2，通过防护构件2的中空部23容纳至少部分固定构件3，对固定构件3进行保护，因此在发生侧撞挤压后，防护构件2先被挤压，防护构件2承受挤压力，同时防护构件2设置有中空部23，能够对挤压力起到吸收和缓冲的作用，提高抵抗侧撞挤压的能力，有效的保障了电池组P的性能和完好性，提高整车的安全性能。
其中，沿箱体M的高度方向(H)，框架构件1的底部设置有加强 板12，用于对电池模块L进行支撑，并起到加强的作用。同时，固定构件3为加强板12沿箱体M的宽度方向(Y)延伸出的结构，当汽车发生侧撞挤压后，会挤压防护构件2，固定构件3也会受挤压，但固定构件3将力传到加强板12上，能够缓解框架构件1挤压电池模块L，进而提高电池组P的安全性能。
在一种可能的设计中，箱体M包括横梁13和纵梁14，横梁13和纵梁14将框架构件1分隔成多个容纳腔11，容纳腔11内可容置电池模块L。同时横梁13和纵梁14分别与电池模块L固定连接，将电池模块L固定于箱体M的容纳腔11中，避免电池模块L松动。
图8为本申请实施例所提供的箱体M的第一防护构件21俯视图；图9为本申请实施例所提供的箱体M的第二防护构件22仰视图；图10为基于图9所示的局部放大图。如图8-图10所示，本申请实施例中防护构件2包括第一防护构件21和第二防护构件22，第一防护构件21与第二防护构件22相互连接以形成中空部23。其中，沿箱体M的高度方向(H)，第一防护构件21和第二防护构件22上下设置，并形成用于容纳固定构件3的中空部23。第一防护构件21和第二防护构件22分体设置，相较于一体成型的防护构件2，具有强度高的优点，第一防护构件21和第二防护构件22分别独立设置，且第一防护构件21和第二防护构件22的连接处能够承受较高的挤压力，进而大幅度的提高了防护构件2抵抗侧撞挤压的能力。
其中，第一防护构件21包括第一连接件213，第二防护构件22包括第二连接件224，第一连接件213和第二连接件224连接后形成防护构件2，两个连接件的设置，能够提高防护构件2承受挤压力的能力。同时第一连接件213和第二连接件224分别与框架构件1固定连接，分别将第一防护构件21和第二防护构件22固定于箱体M，提高结构强度。
在一种可能的设计中，第一防护构件21包括第一凸起部211，第一凸起部211朝向远离第二防护构件22凸出设置，第一凸起部211与对应的第二防护构件22的部分形成中空部23。通过第一凸起部211朝向远离第二防护构件22凸出设置，因此便于形成中空部23，用于容纳固定构件3，同时由于第一凸起部211的设置能够提高第一防护构件21的强度，进而提 高整个防护构件2的强度，进而提高了抵抗侧撞挤压的能力，有效的保障了电池组P的性能和完好性。
具体的，第二防护构件22包括第二凸起部222，第二凸起部222朝向第一防护构件21凸出设置。第二凸起部222的设置能够提高第二防护构件22的强度，进而提高整个防护构件2的强度，同时第二凸起部222朝向第一防护构件21凸出设置，能够减小整个防护构件2的体积，减少了整个电池组P的体积。
进一步地，第二凸起部222与第一防护构件21贴合设置，能够提高贴合处的强度，在发生侧撞挤压后，该处的防护构件2不容易发生变形，提高了抵抗侧撞挤压的能力，保障了电池组P的安全性能。
如图10所示，第二凸起部222包括本体222a和延伸部222b，且本体222a和延伸部222b连通；其中本体222a沿箱体M的长度方向(X)延伸，延伸部222b沿箱体M的宽度方向(Y)延伸，延伸部222b的设置能够增强防护构件2吸能和缓冲的作用，提高抵抗侧撞挤压的能力。
如图5所示，第二防护构件22还包括梁主体221，梁主体221与第一凸起部211对应设置，并形成中空部23，用于容纳固定构件3。第一防护构件21还包括第四凸起部212，第四凸起部212与第一凸起部211间隔设置，第四凸起部212与第二凸起部222贴合设置，提高防护构件2的强度。
图6为本申请实施例所提供的箱体M的框架构件1的结构示意图；图7为基于图6所示的局部放大图。如图6和图7所示，固定构件3包括挂载部31，用于固定箱体M，挂载部31容纳于中空部23。挂载部31用于将箱体M挂载于汽车，且挂载部31容纳于中空部23，当发生侧撞挤压后，通过中空部23的设置能够起到缓冲的作用，避免挂载部31直接被撞击，提高了电池组P抵抗侧撞挤压的能力。
具体的，挂载部31包括第三凸起部311，第三凸起部311朝向第一防护构件21凸出设置，且第三凸起部311与第一防护构件21之间具有间隙，留出的间隙用于安装衬套。同时第三凸起部311的设置能够提高挂载部31的强度，而且第三凸起部311的凸出方向与第一凸起部211的凸出方 向一致，能够节省防护构件2的空间。
进一步地，挂载部31的顶部或底部与防护构件2贴合设置，能够起到支撑中空部23的作用。或者，挂载部31的顶部和底部均与防护构件2贴合设置。由于挂载部31位于中空部23，因此挂载部31与防护构件2贴合设置能够对中空部23起到支撑的作用，同时还能够加强防护构件2的强度。
其中，挂载部31设置为弯折结构，能够更进一步的提高挂载部31的强度。
如图7-图9所示，第一凸起部211设置有第一通孔211a，第二防护构件22设置有第二通孔223，第三凸起部311设置有第三通孔312，第一通孔211a、第二通孔223和第三通孔312对应设置，用于使螺栓穿过，将电池组P挂载在汽车。
在一些实施例中，如图4-图6可看出，固定构件3连接于框架构件1的外周。
固定构件3连接于框架构件1的外周，而防护构件2用于连接框架构件1，且防护构件2具有的中空部容纳至少部分固定构件3，进而固定构件3和防护构件2均连接于框架构件1的外周；即使汽车侧撞挤压，也是防护构件2先被挤压，防护构件2承受挤压力，同时防护构件2设置有中空部23，能够对侧撞挤压力起到吸收和缓冲的作用，提高抵抗侧撞挤压的能力，有效的保障了电池组P的性能和完好性。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (10)

  1. 一种用于电池组(P)的箱体(M)，包括：
    框架构件(1)，用于形成容纳腔(11)；
    固定构件(3)，用于安装所述箱体(M)，且所述固定构件(3)连接于所述框架构件(1)；以及
    防护构件(2)，用于连接所述框架构件(1)，且所述防护构件(2)包括中空部(23)，至少部分的所述固定构件(3)容纳于所述中空部(23)；
    所述防护构件(2)包括第一防护构件(21)和第二防护构件(22)，所述第一防护构件(21)与所述第二防护构件(22)相互连接以形成所述中空部(23)。
  2. 根据权利要求1所述的箱体(M)，其中，所述固定构件(3)连接于所述框架构件(1)的外周。
  3. 根据权利要求1或2所述的箱体(M)，其中，所述第一防护构件(21)包括第一凸起部(211)，所述第一凸起部(211)朝向远离所述第二防护构件(22)凸出设置，所述第一凸起部(211)与对应的所述第二防护构件(22)的部分形成所述中空部(23)。
  4. 根据权利要求1-3任一项所述的箱体(M)，其中，所述第二防护构件(22)包括第二凸起部(222)，所述第二凸起部(222)朝向所述第一防护构件(21)凸出设置。
  5. 根据权利要求4所述的箱体(M)，其中，所述第二凸起部(222)与所述第一防护构件(21)贴合设置。
  6. 根据权利要求1-5任一项所述的箱体(M)，其中，所述固定构件(3)包括挂载部(31)，用于固定所述箱体(M)，所述挂载部(31)容 纳于所述中空部(23)。
  7. 根据权利要求6所述的箱体(M)，其中，所述挂载部(31)的顶部与所述防护构件(2)贴合设置；和/或
    所述挂载部(31)的底部与所述防护构件(2)贴合设置。
  8. 根据权利要求6或7所述的箱体(M)，其中，所述挂载部(31)包括第三凸起部(311)，所述第三凸起部(311)朝向所述第一防护构件(21)凸出设置，且所述第三凸起部(311)与所述第一防护构件(21)之间具有间隙。
  9. 一种电池组(P)，包括：如权利要求1-8任一项所述的箱体(M)；和
    收容于所述箱体(M)的所述容纳腔(11)内的电池。
  10. 一种装置，包括根据权利要求9所述的电池组(P)，所述电池组(P)用于提供电能。
PCT/CN2020/139626 2020-03-31 2020-12-25 箱体、电池组及装置 WO2021196772A1 (zh)

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