WO2024036542A1 - 电池箱体、电池及车辆 - Google Patents

电池箱体、电池及车辆 Download PDF

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Publication number
WO2024036542A1
WO2024036542A1 PCT/CN2022/113171 CN2022113171W WO2024036542A1 WO 2024036542 A1 WO2024036542 A1 WO 2024036542A1 CN 2022113171 W CN2022113171 W CN 2022113171W WO 2024036542 A1 WO2024036542 A1 WO 2024036542A1
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WO
WIPO (PCT)
Prior art keywords
battery
bearing plate
load
battery box
vehicle
Prior art date
Application number
PCT/CN2022/113171
Other languages
English (en)
French (fr)
Inventor
何润泳
陈兴地
王鹏
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/113171 priority Critical patent/WO2024036542A1/zh
Priority to CN202280006355.4A priority patent/CN116157952A/zh
Priority to CN202223524593.0U priority patent/CN219226446U/zh
Publication of WO2024036542A1 publication Critical patent/WO2024036542A1/zh

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    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • 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
    • H01M50/233—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
    • H01M50/244—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of battery technology, and more specifically, to a battery box, a battery and a vehicle.
  • the design of the load-bearing plate of the battery box is often not rigid enough.
  • the load-bearing plate lacks the necessary rigidity and strength, and the battery box has poor impact resistance, so that the battery box inside The battery cells are damaged, thus affecting the normal use of the battery cells.
  • this application discloses a battery box, a battery and a vehicle.
  • a battery box includes a box body, a load-bearing plate and a reinforcing member.
  • the inside of the box body is used to accommodate battery cells.
  • the box body is located on one side of the load-bearing plate; the reinforcing member is fixed on the side of the load-bearing plate away from the box body.
  • the reinforcing member has a first protrusion protruding along a side direction away from the load-bearing plate, and a cavity is formed between the first protrusion and the load-bearing plate. In this way, a cavity is formed between the reinforcing member and the load-bearing plate. When the battery box is impacted, the cavity can absorb the impact energy, thereby providing a better buffering effect on the load-bearing plate and improving the impact resistance of the load-bearing plate.
  • the depth of the cavity is greater than or equal to 1.5 times the thickness of the carrier plate. In this way, by controlling the depth of the cavity, the depth of the cavity is within an optimal range, which can not only buffer the load-bearing plate, but also not occupy too much space on one side of the load-bearing plate in the thickness direction.
  • the reinforcing member has at least two first protrusions, and all first protrusions are spaced side by side. In this way, the buffering effect of the reinforcing member on the load-bearing plate can be further enhanced.
  • all first protrusions are strip-shaped and have equal sizes. In this way, batch processing of the first protrusions on the reinforcing member is facilitated, which is beneficial to improving production efficiency.
  • the reinforcing member further includes a reinforcing body connected to the first protruding portion, and the thickness of the reinforcing body ranges from 0.6 mm to 2 mm. In this way, by controlling the thickness of the reinforcing body, the thickness of the reinforcing member is in the optimal range, which can not only reinforce the load-bearing plate, but also not occupy too much space on one side of the load-bearing plate in the thickness direction. .
  • the number of reinforcing members is at least two, and all the reinforcing members are stacked on the side of the load-bearing plate away from the box body. In this way, the stiffness of the load-bearing plate can be locally enhanced and the reinforcing effect of the load-bearing plate can be further enhanced.
  • the reinforcement is removably connected to the carrier plate. In this way, it facilitates the quick disassembly and assembly of the reinforcing parts and is conducive to user operation.
  • the thickness of the carrier plate ranges from 0.6 mm to 3 mm. In this way, by controlling the thickness of the load-bearing plate, the thickness of the load-bearing plate is within an optimal range, which can effectively resist impact without occupying too much space in the thickness direction of the vehicle.
  • the load-bearing plate has a second protrusion protruding in a direction away from the side of the load-bearing plate. In this way, the buffering effect of the bearing plate on ground impact can be further improved.
  • the battery box is used in a vehicle.
  • the battery box has a first cantilever connected to the front axle of the vehicle and a second cantilever connected to the rear axle of the vehicle.
  • the load-bearing plate is provided on the first cantilever and the second cantilever. Between the two cantilevers, the reinforcing member is arranged close to the second cantilever. In this way, the strength of the load-bearing plate near the rear axle of the vehicle can be locally enhanced, further enhancing the impact resistance of the vehicle body.
  • a battery includes a battery cell and the above-mentioned battery box, and the battery cell is accommodated in the battery box.
  • the load-bearing plate of the battery box is provided with reinforcing members to locally enhance the stiffness of the load-bearing plate and enhance the impact resistance of the load-bearing plate.
  • a vehicle includes the battery described above.
  • the battery has good impact resistance.
  • Figure 1 is a schematic diagram of a vehicle in an embodiment provided by the present application.
  • Figure 2 is a top view of the combination of the load-bearing plate and the reinforcing member in an embodiment provided by the present application;
  • Figure 3 is a partial cross-sectional view of Figure 2;
  • FIG 4 is a schematic diagram of the load-bearing plate and reinforcing parts in the battery box shown in Figure 2;
  • FIG. 5 is a schematic diagram of the battery box shown in Figure 2.
  • Second cantilever 20. Battery; 21. Battery box; 22. Battery cell; 100. Bearing plate; 110. Second Protruding part; 200, reinforcing member; 201, cavity; 210, first protruding part; 220, reinforcing body; 300, box body; 310, first part; 320, second part.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • connection In this application, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; 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 an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • a first feature being “on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.
  • Power battery is a rechargeable battery that is the power source of new energy vehicles and is widely used in the field of new energy vehicles.
  • the battery box is used in vehicles.
  • the design of the load-bearing plate of the battery box is often insufficiently rigid.
  • the load-bearing plate lacks the necessary rigidity and strength.
  • the impact resistance of the battery box is poor, so that the battery cells in the battery box are subject to damage, thus affecting the normal use of the battery cells.
  • a battery box, battery and vehicle were designed.
  • a cavity is formed between the reinforcement and the load-bearing plate.
  • the cavity can absorb impact energy, thus playing a better buffering role on the load-bearing plate and improving the impact resistance of the load-bearing plate.
  • Embodiments of the present application provide an electrical device that uses a battery as a power source.
  • the electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc.
  • electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, electric airplane toys, etc.
  • spacecraft can include airplanes, rockets, space shuttles, spaceships, etc.
  • an electrical device in an embodiment of the present application is a vehicle 10 as an example.
  • FIG. 1 is a schematic structural diagram of a vehicle 10 provided by some embodiments of the present application.
  • the vehicle 10 may be a fuel vehicle, a gas vehicle, or a new energy vehicle.
  • the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range-extended vehicle.
  • the battery 20 is disposed inside the vehicle 10 , and the battery 20 can be disposed at the bottom, head, or tail of the vehicle 10 .
  • the battery 20 may be used to power the vehicle 10 , for example, the battery 20 may serve as an operating power source for the vehicle 10 .
  • the vehicle 10 may also include a controller 11 and a motor 12.
  • the controller 11 is used to control the battery 20 to provide power to the motor 12, for example, for starting, navigating, and driving the vehicle 10 to meet the operating power requirements.
  • the battery 20 can not only be used as an operating power source of the vehicle 10 , but also can be used as a driving power source of the vehicle 10 , replacing or partially replacing fuel or natural gas to provide driving force for the vehicle 10 .
  • the battery box 21 includes a box body 300, a load-bearing plate 100 and a reinforcing member 200.
  • the box body 300 is used to accommodate the battery cells 22.
  • the box body 300 is disposed on the load-bearing plate 100.
  • the reinforcing member 200 is fixed to the side of the load-bearing plate 100 facing away from the box body 300 .
  • the bearing plate 100 is a part of the battery box 21 and plays a bearing role.
  • the load-bearing plate 100 can be made of steel, aluminum or other metal materials, which has high mechanical strength and good load-bearing performance.
  • the reinforcing member 200 is a component fixed on one side of the load-bearing plate 100 and plays a role in reinforcing and buffering the load-bearing plate 100 .
  • the reinforcing member 200 can be made of metal materials such as steel, aluminum, or non-metallic composite materials.
  • the stiffness of the load-bearing plate 100 can be locally enhanced and the impact resistance of the battery box 21 can be enhanced.
  • the reinforcing member 200 has a first protruding portion 210 protruding along a side direction away from the bearing plate 100 , and the first protruding portion 210 is in contact with the bearing plate 100 A cavity 201 is formed therebetween.
  • the first protruding portion 210 is punched from the reinforcing body 220 of the reinforcing member 200 along a side away from the load-bearing plate 100 .
  • the cavity 201 may be cylindrical, V-shaped, or other shapes, and the shape of the cavity 201 is not specifically limited here.
  • a cavity 201 is formed between the reinforcing member 200 and the load-bearing plate 100.
  • the cavity 201 can absorb the impact energy, thus playing a better buffering effect on the load-bearing plate 100 and improving the load-bearing plate. 100% impact resistance.
  • the depth of the cavity 201 is greater than or equal to 1.5 times the thickness of the carrier plate 100 .
  • both the depth direction and the thickness direction are the Z direction shown in FIG. 4 .
  • the depth of the cavity 201 is in an optimal range, which can not only play a buffering role for the load-bearing plate 100, but also not occupy too much of one side of the load-bearing plate 100 in terms of thickness. direction space.
  • the reinforcing member 200 has at least two first protrusions 210 , and all the first protrusions 210 are arranged side by side and spaced apart.
  • a cavity 201 is formed between each first protruding part 210 and the carrier plate 100, and the number of the cavities 201 corresponds to the number of the first protruding parts 210.
  • all the first protrusions 210 are arranged side by side and spaced apart along the same direction.
  • all the first protrusions 210 are arranged side by side and spaced apart along the X direction shown in FIG. 3 .
  • all the first protrusions 210 may also be arranged side by side and spaced apart along at least two directions.
  • the buffering effect of the reinforcing member 200 on the bearing plate 100 can be further enhanced.
  • all first protrusions 210 are strip-shaped and have equal sizes.
  • the shapes and sizes of all the first protrusions 210 may not be exactly the same or may be completely different.
  • the reinforcing member 200 further includes a reinforcing body 220 connected to the first protruding portion 210.
  • the thickness of the reinforcing body 220 ranges from 0.6 mm to 2 mm.
  • the reinforcing member 200 will have a poor reinforcing effect on the load-bearing plate 100; if the thickness of the reinforcing body 220 is too large, it will occupy one side of the load-bearing plate 100. direction space.
  • the reinforcing body 220 and the first protruding portion 210 are an integrally formed structure, which has good integrity and high mechanical strength.
  • the thickness of the reinforcing body 220 of the reinforcing member 200 is in the optimal range, which can not only reinforce the load-bearing plate 100, but also It occupies too much space in the thickness direction on one side of the carrier plate 100 .
  • the number of reinforcing members 200 is at least two, and all the reinforcing members 200 are stacked on one side of the load-bearing plate 100 .
  • all reinforcing members 200 are in a stacked shape, that is, the reinforcing members 200 are stacked in the thickness direction, so as to reinforce the load-bearing plate 100 in the thickness direction.
  • all the reinforcing members 200 have the same shape and size. As shown in FIG. 3 , all the reinforcing members 200 are rectangular and have the same size. In other embodiments, the shapes and sizes of all reinforcing members 200 may not be exactly the same.
  • the stiffness of the load-bearing plate 100 can be locally enhanced and the reinforcing effect of the load-bearing plate 100 can be further enhanced.
  • the reinforcing member 200 is detachably connected to the load-bearing plate 100 .
  • the reinforcing member 200 can be detachably connected to one side of the load-bearing plate 100 by screwing, gluing, or snapping. It should be noted that in other embodiments, the reinforcing member 200 can also be connected to one side of the load-bearing plate 100 in a non-detachable manner such as welding or riveting.
  • the reinforcing member 200 can be quickly disassembled and assembled, which is beneficial to user operation.
  • the thickness of the bearing plate 100 ranges from 0.6 mm to 3 mm.
  • the thickness of the load-bearing plate 100 is too small, the stiffness of the load-bearing plate 100 is poor and cannot effectively resist impact; if the thickness of the load-bearing plate 100 is too large, the space in the thickness direction of the vehicle 10 will be occupied.
  • the thickness of the load-bearing plate 100 is in an optimal range, which can effectively resist impact without occupying too much space in the thickness direction of the vehicle 10 .
  • the carrier plate 100 has a second protruding portion 110 protruding along a side direction away from the carrier plate 100 .
  • all the second protrusions 110 are arranged side by side and spaced apart along the same direction. In other embodiments, all the second protrusions 110 may also be arranged side by side and spaced apart along at least two directions.
  • a battery box 21 is used for a vehicle 10 .
  • the battery box 21 has a first cantilever 13 connected to the front axle of the vehicle 10 and a second cantilever 13 connected to the rear axle of the vehicle 10 .
  • the cantilever 14, the load-bearing plate 100 is disposed between the first cantilever 13 and the second cantilever 14, and the reinforcing member 200 is disposed close to the second cantilever 14.
  • the side of the load-bearing plate 100 facing away from the box body 300 can be completely covered by one reinforcing member 200 , or covered by a combination of multiple reinforcing members 200 , and the shapes of the multiple reinforcing members 200 can be the same. It doesn't have to be exactly the same.
  • the second cantilever 14 connected to the rear axle is located in the middle and rear of the vehicle, that is, at a place where the stiffness is weak and the impact force is large.
  • the reinforcing member 200 can reinforce the load plate 100 there. To resist impact.
  • the strength of the load-bearing plate 100 near the rear axle of the vehicle 10 can be locally enhanced, further enhancing the impact resistance of the vehicle body.
  • the battery 20 in one embodiment includes a battery cell 22 and the above-mentioned battery box 21 .
  • the battery cell 22 is accommodated in the battery box 21 .
  • the battery box 21 includes a box body 200 , and the box body 200 may include a first part 310 and a second part 320 , and the first part 310 is connected to the bearing plate 100 .
  • the first part 310 and the second part 320 cover each other, and the first part 310 and the second part 320 jointly define an accommodation space for accommodating the battery cell 22 .
  • the second part 320 may be a hollow structure with one end open, and the first part 310 may be a plate-like structure.
  • the first part 310 covers the open side of the second part 21b, so that the first part 310 and the second part 320 jointly define a receiving space.
  • the first part 310 and the second part 320 may also be hollow structures with one side open, and the open side of the first part 310 is covered with the open side of the second part 320.
  • the box body 200 formed by the first part 310 and the second part 320 can be in various shapes, such as a cylinder, a cuboid, etc.
  • the battery 20 there may be a plurality of battery cells 22 , and the plurality of battery cells 22 may be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the plurality of battery cells 22 are connected in series and in parallel.
  • the plurality of battery cells 22 can be directly connected in series or in parallel or mixed together, and then the whole composed of the plurality of battery cells 22 can be accommodated in the battery box 21 ; of course, the battery 20 can also be a plurality of battery cells. 22 are first connected in series, parallel or mixed to form a battery module form, and then multiple battery modules are connected in series, parallel or mixed to form a whole, and are accommodated in the battery box 21 .
  • Each battery cell 22 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 22 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped or other shapes.
  • the battery cell 22 may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., which is not limited in the embodiment of the application.
  • the battery cell 22 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped or other shapes, and the embodiments of the present application are not limited thereto.
  • the load-bearing plate 100 of the battery box 21 is provided with a reinforcing member 200 to locally enhance the stiffness of the load-bearing plate 100 and enhance the impact resistance of the load-bearing plate 100.
  • a vehicle 10 in one embodiment includes a battery 20 .
  • the battery 20 may be a secondary battery 20 or a primary battery 20; it may also be a lithium-sulfur battery 20, a sodium-ion battery 20 or a magnesium-ion battery 20, but is not limited thereto.
  • the battery 20 has good impact resistance. .
  • the battery box 21 includes a box body 300 , a load-bearing plate 100 and a reinforcing member 200 .
  • the box body 300 is used for storage.
  • the battery cells 22 and the box body 300 are arranged on one side of the bearing plate 100 , and the reinforcing member 200 is fixed on the side of the bearing plate 100 away from the box body 300 .
  • the reinforcing member 200 has at least two first protrusions 210 protruding in a direction away from the load-bearing plate 100.
  • a cavity 201 is formed between each first protrusion 210 and the load-carrying plate 100. The depth of a cavity 201 is greater than or equal to 1.5 times the thickness of the carrier plate 100.
  • All the first protrusions 210 are arranged side by side and are spaced apart. All the first protrusions 210 are strip-shaped and have equal sizes.
  • the reinforcing member 200 also includes a reinforcing body 220 connected to the first protruding part 210.
  • the thickness of the reinforcing body 220 ranges from 0.6 mm to 2 mm.
  • the thickness of the load-bearing plate 100 ranges from 0.6 mm to 3 mm.
  • the load-bearing plate 100 has a second protrusion protruding along a direction away from the load-bearing plate 100 .
  • the battery 20 includes a battery cell 22 and the above-mentioned battery box 21 .
  • the battery cell 22 is contained in the battery box 21 .
  • a vehicle 10 includes the above-mentioned battery 20 .

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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)

Abstract

本申请公开了一种电池箱体(21)、电池(20)及车辆(10)，一种电池箱体(21)包括箱本体(300)、承载板(100)及补强件(200)，箱本体(300)内部用于收容电池单体(22)，箱本体(300)设于承载板(100)的一侧，补强件(200)固定于承载板(100)背离箱本体(300)的一侧。一种电池(20)包括电池单体(22)及上述的电池箱体(21)，电池单体(22)收容于电池箱体(21)内。一种车辆(10)包括上述的电池(20)。上述的电池箱体(21)、电池(20)及车辆(10)，通过在承载板(100)上设置补强件(200)，能够在局部增强承载板(100)的刚度，增强电池箱体(21)的抗冲击性能。

Description

电池箱体、电池及车辆 技术领域
本申请涉及电池技术领域，更具体的说，涉及一种电池箱体、电池及车辆。
背景技术
在一些情形下电池箱体的承载板设计往往刚性不足，当汽车在行驶过程中发生碰撞或晃动时，承载板缺乏必要的刚性和强度，电池箱体抗冲击性能较差，以使电池箱体内的电池单体受损，从而影响电池单体正常使用。
发明内容
有鉴于此，本申请公开一种电池箱体、电池及车辆。
一种电池箱体包括箱本体、承载板及补强件，箱本体内部用于收容电池单体，箱本体设于承载板的一侧；补强件固定于承载板背离箱本体的一侧。上述的电池箱体，通过在承载板上设置补强件，能够在局部增强承载板的刚度，增强电池箱体的抗冲击性能。
在一些实施例中，补强件具有沿远离承载板的一侧方向凸出的第一凸起部，第一凸起部与承载板之间形成空腔。如此，补强件与承载板之间形成空腔，在电池箱体受到冲击时空腔能吸收冲击能量，从而对承载板起到较好的缓冲作用，提高承载板的抗冲击性能。
在一些实施例中，空腔的深度大于等于承载板的厚度的1.5倍。如此，通过控制空腔的深度大小，使空腔的深度处于最优范围，既能对承载板起到缓冲作用，也不会过多地占用承载板的一侧在厚度方向上的空间。
在一些实施例中，补强件具有至少两个第一凸起部，全部第一凸起部并排间隔设置。如此，能够进一步加强补强件对承载板的缓冲作用。
在一些实施例中，全部第一凸起部均呈条形且尺寸相等。如此，便于对补强件上的第一凸起部的批量加工，有利于提高生产效率。
在一些实施例中，补强件还包括与第一凸起部连接的补强本体，补强本体的厚度范围为0.6mm～2mm。如此，通过控制补强本体的厚度，使补强件的厚度处于最优范围，既能对承载板起到补强作用，也不会过多地占用承载板的一侧在厚度方向上的空间。
在一些实施例中，补强件的数量为至少两个，全部补强件呈层叠状设于承载板背离箱本体的一侧。如此，能够在局部增强承载板的刚度，进一步加强对承载板的补强作用。
在一些实施例中，补强件可拆卸地连接于承载板。如此，便于补强件的快速拆装，有利于用户操作。
在一些实施例中，承载板的厚度范围为0.6mm～3mm。如此，通过控制承载板的厚度，使承载板的厚度处于最优范围，既能有效抗冲击，也不会过多地占用车辆在厚度方向上的空间。
在一些实施例中，承载板具有沿远离承载板的一侧方向凸出的第二凸起部。如此，能够进一步地提高承载板对地面冲击的缓冲作用。
在一些实施例中，电池箱体用于车辆，电池箱体具有与车辆的前桥连接的第一悬臂及与车辆的后桥连接的第二悬臂，承载板设于第一悬臂及所述第二悬臂之间，补强件靠近第二悬臂设置。如此，能够局部增强承载板靠近车辆的后桥处的强度，进一步增强车身的抗冲击性能。
一种电池包括电池单体及上述的电池箱体，电池单体收容于电池箱体内。上述的电池，电池箱体的承载板设有补强件，在局部增强承载板的刚度，增强承载板的抗冲击性能。
一种车辆包括上述的电池。上述的车辆，电池的抗冲击性能好。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，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，还可以根据公开的附图获得其他的附图。
图1为本申请提供的一实施例中车辆的示意图；
图2为本申请提供的一实施例中承载板及补强件的组合俯视图；
图3为图2的局部剖视图；
图4为图2所示电池箱体中承载板及补强件的示意图；
图5为图2所示电池箱体的示意图。
附图标记：
10、车辆；11、控制器；12、马达；13、第一悬臂；14、第二悬臂；20、电池；21、电池箱体；22、电池单体；100、承载板；110、第二凸起部；200、补强件；201、空腔；210、第一凸起部；220、补强本体；300、箱本体；310、第一部分；320、第二部分。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、 “厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”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至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，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，除非另有明确的限定。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。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
随着新能源汽车的普及和推广，新能源汽车的充放电性能、续航能力等日益引起人们的关注和重视。动力电池为一种可充电的电池是新能源汽车的动力来源，在新能源汽车领域中被广泛应用。
电池箱体用于车辆，在一些情形下电池箱体的承载板设计往往刚性不足，承载板缺乏必要的刚性和强度，电池箱体抗冲击性能较差，以使电池箱体内的电池单体受损，从而影响电池单体正常使用。
基于上述考虑，经深入研究，设计了一种电池箱体、电池及车辆，在电池箱体中，通过在补强件与承载板之间形成空腔，在电池箱体受到冲击时空腔能吸收冲击能量，从而对承载板起到较好的缓冲作用，提高承载板的抗冲击性能。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备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设备为车辆10为例进行说明。
请参考图1，图1为本申请一些实施例提供的车辆10的结构示意图。车辆10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10的内部设置有电池20，电池20可以设置在车辆10的底部或头部或尾部。电池20可以用于车辆10的供电，例如，电池20可以作为车辆10的操作电源。车辆10还可以包括控制器11和马达12，控制器11用来控制电池20为马达12供电，例如，用于车辆10的启动、导航和行驶时的工作用电需求。在本申请另一些实施例中，电池20不仅可以作为车辆10的操作电源，还可以作为车辆10的驱动电源，代替或部分地代替燃油或天然气为车辆10提供驱动力。
请参考图2及图3，一实施例中的电池箱体21包括箱本体300、承载板100及补强件200，箱本体300用于收容电池单体22，箱本体300设于承载板100的一侧，补强件200固定于承载板100背离箱本体300的一侧。
本申请的一些实施例中，承载板100为电池箱体21的一部分，起到承载作用。承载板100可以选用钢、铝等金属材质，机械强度高且承载性能好。
本申请的一些实施例中，补强件200为固定于承载板100的一侧，并对承载板100起到补强及缓冲作用的构件。补强件200可以选用钢、铝等金属材质或者非金属复合材料。
上述的电池箱体21，通过在承载板100上设置补强件200，能够在局部增强承载板100的刚度，增强电池箱体21的抗冲击性能。
根据本申请的一些实施例，请参考图2及图3，补强件200具有沿远离承载板100的一侧方向凸出的第一凸起部210，第一凸起部210与承载板100之间形成空腔201。
此处，沿远离承载板100的一侧方向也即沿图3所示Z方向。
本申请的一些实施例中，第一凸起部210由补强件200的补强本体220沿远离承载板100的一侧方向冲压而成。
本申请的一些实施例中，空腔201可以呈圆柱形、V形或其他形状，在此对空腔201的形状不作具体限定。
通过上述设置，补强件200与承载板100之间形成空腔201，在电池箱体21受到冲击时空腔201能吸收冲击能量，从而对承载板100起到较好的缓冲作用，提高承载板100的抗冲击性能。
根据本申请的一些实施例，请参考图3，空腔201的深度大于等于承载板100的厚度的1.5倍。
此处，深度方向及厚度方向均为图4所示Z方向。
可以理解的是，当空腔201的深度过小时，空腔201对承载板100的缓冲作用不明显；当空腔201的深度过大时，会占用承载板100的一侧在厚度方向上的空间。
通过上述设置，通过控制空腔201的深度大小，使空腔201的深度处于最优范围，既能对承载板100起到缓冲作用，也不会过多地占用承载板100的一侧在厚度方向上的空间。
根据本申请的一些实施例，请参考图3，补强件200具有至少两个第一凸起部210，全部第一凸起部210并排间隔设置。
需说明的是，每一第一凸起部210与承载板100之间形成一个空腔201，空腔201的数量与第一凸起部210的数量一一对应。
本实施例中，全部第一凸起部210沿同一方向并排间隔设置。例如，如图5所示，全部第一凸起部210沿图3所示X方向并排间隔设置。在其他实施例中，全部第一凸起部210还可以沿至少两个方向并排间隔设置。
通过上述设置，能够进一步加强补强件200对承载板100的缓冲作用。
根据本申请的一些实施例，请参考图4，全部第一凸起部210均呈条形且尺寸相等。
需说明的是，在其他实施例中，全部第一凸起部210的形状及尺寸还可以不完全相同或者完全不同。
通过上述设置，便于对补强件200上的第一凸起部210的批量加工，有利于提高生产效率。
根据本申请的一些实施例，请参考图3及图4，补强件200还包括与第一凸起部210连接的补强本体220，补强本体220的厚度范围为0.6mm～2mm。
可以理解的是，若补强本体220的厚度过小，补强件200对承载板100的补强作用较差；若补强本体220的厚度过大，会占用承载板100的一侧在厚度方向上的空间。
本实施例中，补强本体220及第一凸起部210为一体成型结构，整体性好且机械强度高。
通过上述设置，通过控制补强件200的补强本体220的厚度，使补强件200的补强本体220的厚度处于最优范围，既能对承载板100起到补强作用，也不会过多地占用承载板100的一侧在厚度方向上的空间。
根据本申请的一些实施例，请参考图3，补强件200的数量为至少两个，全部补强件200呈层叠状设于承载板100的一侧。
本申请的一些实施例中，全部补强件200呈层叠状也即补强件200在厚度方向上进行堆叠，以使在厚度方向上补强承载板100。
在本实施例中，全部补强件200的形状及尺寸均相同，如图3所示，全部补强件200均呈矩形且尺寸均相同。在其他实施例中，全部补强件200的形状及尺寸还可以不完全相同。
通过上述设置，能够在局部增强承载板100的刚度，进一步加强对承载板100的补强作 用。
根据本申请的一些实施例，请参考图3，补强件200可拆卸地连接于承载板100。
本申请的一些实施例中，补强件200可以通过螺钉固定、胶粘或卡接等方式可拆卸地连接于承载板100的一侧。需说明的是，在其他实施例中，补强件200还可以通过焊接或铆接等不可拆卸方式连接于承载板100的一侧。
通过上述设置，便于补强件200的快速拆装，有利于用户操作。
根据本申请的一些实施例，请参考图3，承载板100的厚度范围为0.6mm～3mm。
可以理解的是，若承载板100的厚度过小，承载板100的刚度较差，无法有效抗冲击；若承载板100的厚度过大，会占用车辆10在厚度方向上的空间。
通过上述设置，通过控制承载板100的厚度，使承载板100的厚度处于最优范围，既能有效抗冲击，也不会过多地占用车辆10在厚度方向上的空间。
根据本申请的一些实施例，请参考图4，承载板100具有沿远离承载板100的一侧方向凸出的第二凸起部110。
本实施例中，全部第二凸起部110沿同一方向并排间隔设置。在其他实施例中，全部第二凸起部110还可以沿至少两个方向并排间隔设置。
通过上述设置，能够进一步地提高承载板100对地面冲击的缓冲作用。
根据本申请的一些实施例，请参考图2，电池箱体21用于车辆10，电池箱体21具有与车辆10的前桥连接的第一悬臂13及与车辆10的后桥连接的第二悬臂14，承载板100设于第一悬臂13及所述第二悬臂14之间，补强件200靠近第二悬臂14设置。
本申请的一些实施例中，承载板100背离箱本体300的一侧可以通过一个补强件200完全覆盖，或者通过多个补强件200组合覆盖，多个补强件200的形状可以相同也可以不完全相同。此处，与后桥连接的第二悬臂14处位于整车中后部，也即处于刚度薄弱且受冲击力较大处，补强件200能够对此处的承载板100起到补强作用以抗冲击。
通过上述设置，能够局部增强承载板100靠近车辆10的后桥处的强度，进一步增强车身的抗冲击性能。
请参考图3及图5，一实施例中的电池20包括电池单体22及上述的电池箱体21，电池单体22收容于电池箱体21内。
本申请的一些实施例中，电池箱体21包括箱本体200，箱本体200可以包括第一部分310和第二部分320，第一部分310连接于承载板100。第一部分310和第二部分320相互盖合，第一部分310和第二部分320共同限定出用于容纳电池单体22的容纳空间。第二部分320可以为一端开口的空心结构，第一部分310可以为板状结构，第一部分310盖合于第二部分21b的开口侧，以使第一部分310和第二部分320共同限定出容纳空间；第一部分310和第二部分320也可以是均为一侧开口的空心结构，第一部分310的开口侧盖合于第二部分320的开 口侧。当然，第一部分310和第二部分320形成的箱本体200可以是多种形状，比如，圆柱体、长方体等。
在电池20中，电池单体22可以是多个，多个电池单体22之间可串联或并联或混联，混联是指多个电池单体22中既有串联又有并联。多个电池单体22之间可直接串联或并联或混联在一起，再将多个电池单体22构成的整体容纳于电池箱体21内；当然，电池20也可以是多个电池单体22先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于电池箱体21内。
其中，每个电池单体22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22可呈圆柱体、扁平体、长方体或其它形状等。本申请中，电池单体22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22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。
上述的电池20，电池箱体21的承载板100设有补强件200，在局部增强承载板100的刚度，增强承载板100的抗冲击性能
请参考图1，一实施例中的车辆10包括电池20。
本申请的一些实施例中，电池20可以为二次电池20或一次电池20；还可以是锂硫电池20、钠离子电池20或镁离子电池20，但不局限于此。
上述的车辆10，电池20的抗冲击性能好。。
根据本申请的一些实施例，请参考图3至图5，一实施例中的电池箱体21包括电池箱体21包括箱本体300、承载板100及补强件200，箱本体300用于收容电池单体22，箱本体300设于承载板100的一侧，补强件200固定于承载板100背离箱本体300的一侧。
其中，补强件200具有沿远离承载板100的一侧方向凸出的至少两个第一凸起部210，每一第一凸起部210与承载板100之间形成一个空腔201，每一空腔201的深度大于等于承载板100的厚度的1.5倍，全部第一凸起部210并排间隔设置，全部第一凸起部210均呈条形且尺寸相等。补强件200还包括与第一凸起部210连接的补强本体220，补强本体220的厚度范围为0.6mm～2mm。承载板100的厚度范围为0.6mm～3mm，承载板100具有沿远离承载板100的一侧方向凸出的第二凸起部。
根据本申请的一些实施例，请参考图3及图5，一实施例中的电池20包括电池单体22及上述的电池箱体21，电池单体22收容于电池箱体21内。
根据本申请的一些实施例，请参考图1，一实施例中的车辆10包括上述的电池20。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因 此，本申请专利的保护范围应以所附权利要求为准。

Claims (13)

  1. 一种电池箱体(21)，包括：
    箱本体(300)，内部用于收容电池单体(22)；
    承载板(100)，所述箱本体(300)设于所述承载板(100)的一侧；
    补强件(200)，固定于所述承载板(100)背离所述箱本体(300)的一侧。
  2. 根据权利要求1所述的电池箱体(21)，其中，所述补强件(200)具有沿远离所述承载板(100)的一侧方向凸出的第一凸起部(210)，所述第一凸起部(210)与所述承载板(100)之间形成空腔(201)。
  3. 根据权利要求2所述的电池箱体(21)，其中，所述空腔(201)的深度大于等于所述承载板(100)的厚度的1.5倍。
  4. 根据权利要求2所述的电池箱体(21)，其中，所述补强件(200)具有至少两个所述第一凸起部(210)，全部所述第一凸起部(210)并排间隔设置。
  5. 根据权利要求4所述的电池箱体(21)，其中，全部所述第一凸起部(210)均呈条形且尺寸相等。
  6. 根据权利要求4所述的电池箱体(21)，其中，所述补强件(200)还包括与所述第一凸起部(210)连接的补强本体(220)，所述补强本体(220)的厚度范围为0.6mm～2mm。
  7. 根据权利要求1-6任一项所述的电池箱体(21)，其中，所述补强件(200)的数量为至少两个，全部所述补强件(200)呈层叠状设于所述承载板(100)背离所述箱本体(300)的一侧。
  8. 根据权利要求1-6任一项所述的电池箱体(21)，其中，所述补强件(200)可拆卸地连接于所述承载板(100)。
  9. 根据权利要求1-6任一项所述的电池箱体(21)，其中，所述承载板(100)的厚度范围为0.6mm～3mm。
  10. 根据权利要求1-6任一项所述的电池箱体(21)，其中，所述承载板(100)具有沿远离所述承载板(100)的一侧方向凸出的第二凸起部(110)。
  11. 根据权利要求1-6任一项所述的电池箱体(21)，其中，所述电池箱体(21)用于车辆(10)，所述电池箱体(21)具有与所述车辆(10)的前桥连接的第一悬臂(13)及与所述车辆(10)的后桥连接的第二悬臂(14)，所述承载板(100)设于所述第一悬臂(13)及所述第二悬臂(14)之间，所述补强件(200)靠近所述第二悬臂(14)设置。
  12. 一种电池(20)，包括电池单体(22)及权利要求1-11任一项所述的电池箱体(21)，所述电池单体(22)收容于所述电池箱体(21)内。
  13. 一种车辆(10)，包括如权利要求12所述的电池(20)。
PCT/CN2022/113171 2022-08-18 2022-08-18 电池箱体、电池及车辆 WO2024036542A1 (zh)

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