WO2023174295A1 - 用于电池托盘的边梁、电池托盘、电池包以及车辆 - Google Patents

用于电池托盘的边梁、电池托盘、电池包以及车辆 Download PDF

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Publication number
WO2023174295A1
WO2023174295A1 PCT/CN2023/081413 CN2023081413W WO2023174295A1 WO 2023174295 A1 WO2023174295 A1 WO 2023174295A1 CN 2023081413 W CN2023081413 W CN 2023081413W WO 2023174295 A1 WO2023174295 A1 WO 2023174295A1
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WO
WIPO (PCT)
Prior art keywords
cavity
battery
wall
battery tray
side beam
Prior art date
Application number
PCT/CN2023/081413
Other languages
English (en)
French (fr)
Inventor
唐江龙
李建强
廖正远
万龙
何为
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2023174295A1 publication Critical patent/WO2023174295A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • 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
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • 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

Definitions

  • the present application relates to the field of batteries, and in particular to a side beam for a battery tray, a battery tray, a battery pack and a vehicle.
  • the battery pack is equipped with a battery tray.
  • the battery tray includes a frame, and the frame includes side beams.
  • the structural strength of the side beams is insufficient and the stability is poor, causing the side beams to easily deform, affecting the service life of the side beams, and the side beams are impacted.
  • the force is high, the collision force transmitted to the interior of the battery pack is relatively large, and the risk of the cells in the battery pack being damaged is high, which affects the safety of the battery pack.
  • one purpose of this application is to propose a side beam for a battery tray, which can improve the structural strength and stiffness of the side beam, and can also ensure that the battery pack mode is appropriate and the sub-cavity It can absorb the collision force when struck, reducing the amount of collision force transmitted to the interior of the battery pack, thereby improving the safety of the battery pack, reducing the risk of side beam deformation, and extending the service life of the side beam and battery tray.
  • This application further proposes a battery tray.
  • This application further proposes a battery pack.
  • This application further proposes a vehicle.
  • the battery tray has a placement slot for placing batteries
  • the side beam includes: a side beam body, the side beam body defines a cavity, and the side beam The body has a partition located in the cavity, and the partition is connected between the top wall and the bottom wall of the cavity to separate the cavity into a first sub-cavity and a second sub-cavity.
  • cavity, the first sub-cavity and the second sub-cavity are arranged in sequence in the first direction of the side beam, the cross-sectional area of the first sub-cavity is S1, and the cross-sectional area of the second sub-cavity is The area is S2 and satisfies the relationship: 0.8 ⁇ S1/S2 ⁇ 1.
  • the structural strength and stiffness of the side beam can be improved through the side beam body of the present application, and the battery pack mode can also be ensured to be appropriate, and the risk of deformation of the side beam can be reduced, thereby extending the side beam.
  • the service life of the beam and battery tray can make the battery pack have better collision protection capabilities while ensuring that the battery pack has a suitable mode.
  • the first sub-cavity in the first direction of the side beam, is located between the second sub-cavity and the placement groove.
  • the partition is connected obliquely between the top wall and the bottom wall of the cavity.
  • the partition is inclined away from the placement groove from the upper end to the lower end of the side beam.
  • the cross-sectional shape of the first sub-cavity and the cross-sectional shape of the second sub-cavity are both triangular or trapezoidal.
  • the side rails are constructed as one-piece moldings.
  • the cavity in the width direction of the side beam, has a first side wall disposed away from the placement slot, and the first side wall is connected to the top wall of the cavity and between the bottom walls, and the first side wall is connected to the partition.
  • the lower end of the first side wall is connected to a first connecting portion extending toward the cavity, and the first connecting portion is located on the bottom wall of the cavity toward the cavity.
  • One side of the top wall, the first side wall is connected to the bottom wall of the cavity and the partition through the first connecting part, and the first connecting part is connected to the bottom wall of the cavity Fixed connection.
  • the cavity has a second side wall close to the placement slot, the second side wall is connected between the top wall and the bottom wall of the cavity, and the second side wall is connected between the top wall and the bottom wall of the cavity.
  • the side walls are connected to the partition.
  • the upper end of the second side wall is connected to a second connecting portion extending toward the cavity, and the second connecting portion is located on the top wall of the cavity toward the cavity.
  • One side of the bottom wall, the second side wall is connected to the top wall of the cavity and the partition through the second connecting part, and the second connecting part is connected to the top wall of the cavity Fixed connection.
  • the side beam includes a support portion, the support portion is provided on a side of the side beam body close to the placement slot, and the support portion is used to support the battery core.
  • the lower end of the second side wall is connected to a support portion extending toward the placement groove, and the second side wall is connected to the bottom wall of the cavity through the support portion.
  • the second side wall is connected obliquely between the top wall and the bottom wall of the cavity, and from the upper end to the lower end of the side beam, the second side wall faces closer to The placement slot is inclined.
  • the bottom wall of the cavity has a structural reinforcement portion extending below the support portion, and the structural reinforcement portion and the support portion are close to the Place the end connections of the slot.
  • the structural reinforcement part is provided with a boss protruding toward the support part, and the boss is connected to the support part.
  • the cavity in the width direction of the side beam, has a first side wall disposed away from the placement slot, and the first side wall is connected to the top wall of the cavity and between the bottom walls; the cavity has a second side wall close to the placement slot, the second side wall is connected between the top wall and the bottom wall of the cavity, the top wall of the cavity, The bottom wall of the cavity, the first side wall and the second side wall jointly define the cavity, and the bottom wall of the cavity extends toward the placement groove to form a support for the placement groove.
  • the support part of the battery core in the width direction of the side beam.
  • the battery tray according to the present application includes the above-mentioned side beam for the battery tray.
  • the battery tray according to the present application includes: a tray bottom plate, the tray bottom plate includes a bottom plate body and an extension portion, the bottom plate body defines a placement slot for placing battery cores, and the extension portion is along the circumferential direction of the bottom plate body Edge extension; frame, the frame includes side beams, front end beams and rear end beams, the side beams are the side beams, the side beams, the front end beams and the rear end beams are connected to form an installation space, The bottom plate body is installed in the installation space. In the height direction of the battery tray, the extension is located above the frame and is provided on the frame. The side beams, the front end beam and the rear end At least one of the beams has a support portion extending toward the installation space, and the support portion is used to support the pallet bottom plate.
  • the battery pack according to the present application includes: a battery core; and a battery tray.
  • the battery tray is the above-mentioned battery tray.
  • the battery tray has a placement slot, and the battery core is placed in the placement slot.
  • a vehicle according to the present application includes the above-mentioned battery pack.
  • Figure 1 is an exploded view of a battery pack according to an embodiment of the present application
  • Figure 2 is a cross-sectional view of a battery pack according to an embodiment of the present application.
  • Figure 3 is an enlarged view of point A in Figure 2;
  • FIG. 4 is a schematic assembly diagram of the battery tray and battery core according to the embodiment of the present application.
  • Figure 5 is a schematic diagram of a battery tray according to an embodiment of the present application.
  • Figure 6 is an exploded view of a battery tray according to an embodiment of the present application.
  • Figure 7 is a schematic diagram of the tray bottom plate of the battery tray according to an embodiment of the present application.
  • Figure 8 is a schematic diagram of the frame of a battery tray according to an embodiment of the present application.
  • Figure 9 is a schematic diagram of a side beam of a battery tray according to an embodiment of the present application.
  • Figure 10 is an enlarged view of B in Figure 9;
  • Figure 11 is a partial enlarged view of the battery tray and battery cell assembly according to an embodiment of the present application.
  • Figure 12 is a cross-sectional view of a side beam according to an embodiment of the present application.
  • Figure 13 is a schematic diagram of another embodiment of a side beam according to an embodiment of the present application.
  • Figure 14 is a schematic diagram of a vehicle according to an embodiment of the present application.
  • Multiple side beams 23 are connected to form the frame 20 of the battery tray 100 .
  • the frame 20 defines the installation space 21 .
  • the battery tray 100 Applied to the battery pack 200, the battery tray 100 has a tray bottom plate 10 for supporting the battery cells 201, and the side beams 23 are connected to the tray bottom plate 10.
  • the battery tray 100 has a placement slot 111 for placing the battery cell 201 .
  • the side beam 23 includes a side beam body 231, the side beam body 231 defines a cavity 2311, the side beam body 231 has a partition 232, and the partition 232 Located in the cavity, the partition 232 is connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311.
  • the partition 232 can separate the cavity 2311 into a first sub-cavity 2351 and a second sub-cavity 2352,
  • the first sub-cavity 2351 and the second sub-cavity 2352 are arranged in sequence in the first direction of the side beam 23 .
  • the first direction of the side beam 23 refers to the width direction of the side beam 23 or the width direction of the battery tray 100 or the battery tray 100 .
  • the width direction of the side beam 23 refers to the left-right direction in FIG. 11 .
  • the partition 232 connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311 can divide the cavity 2311 into a plurality of sub-cavities 235.
  • the partition 232 separates the cavity 2311 into two
  • the two sub-cavities 235 are respectively the first sub-cavity 2351 and the second sub-cavity 2352.
  • the partition 232 divides the cavity 2311 into four sub-cavities 235
  • the four sub-cavities 235 are located on the first side of the side beam 23.
  • the directions are arranged in sequence, two adjacent sub-cavities 235 constitute the first sub-cavity 2351, and the other two adjacent sub-cavities 235 constitute the second sub-cavity 2352.
  • the partition 232 divides the cavity 2311 into six sub-cavities 235
  • the six sub-cavities 235 The cavities 235 are arranged sequentially in the first direction of the side beam 23.
  • Three adjacent sub-cavities 235 constitute the first sub-cavity 2351, and three adjacent sub-cavities 235 constitute the second sub-cavity 2352.
  • this application uses a partition 232 divides the cavity 2311 into two sub-cavities 235 as an example for illustration.
  • the cross-sectional area of the first sub-cavity 2351 is S1
  • the cross-sectional area of the second sub-cavity 2352 is S2, satisfying the relationship: 0.8 ⁇ S1/S2 ⁇ 1, and further, 0.8 ⁇ S1/S2 ⁇ 0.99.
  • the cross-sectional area of the first sub-cavity 2351 refers to the cross-sectional area in the width direction of the side beam 23, that is, the cross-sectional area of the first sub-cavity 2351 perpendicular to the length direction of the side beam 23, and the second sub-cavity
  • the cross-sectional area 2352 refers to the cross-sectional area in the width direction of the side beam 23 , that is, the cross-sectional area of the second sub-cavity 2352 perpendicular to the length direction of the side beam 23 .
  • the structural strength and stiffness of the side beam 23 can be improved, and the risk of deformation of the side beam 23 can be reduced, thereby extending the side beam 23 and the battery tray.
  • the hit sub-cavity 235 can absorb the collision force, reducing the transmission to The internal collision force of the battery pack 200 can reduce the risk of the battery cells 201 in the battery pack 200 being damaged, thereby improving the safety of the battery pack 200.
  • the partition 232 is obliquely connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311.
  • the partition 232 is obliquely connected between the top wall 233 of the cavity 2311 and the cavity.
  • the partition 232 can be reliably supported between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, which can improve the structural strength and rigidity of the side beam body 231 and also improve the side beam.
  • the structural stability of the body 231 can reduce the risk of deformation of the side beam 23, thereby extending the service life of the side beam 23 and the battery tray 100.
  • the first sub-cavity 2351 is located between the second sub-cavity 2352 and the placement groove 111, which can also be understood as the first sub-cavity 2351.
  • Sub-cavity 2351 is located between the second sub-cavity 2352 and between the installation spaces 21 of the battery tray 100 .
  • the cavity 2352 is arranged by arranging the first sub-cavity 2351 and the second sub-cavity 2352 in sequence in the width direction of the side beam 23.
  • the sub-cavity 235 of the multiple sub-cavities 235 that is far away from the placement groove 111 is hit, it will be located in Figure 12
  • the impacted second sub-cavity 2352 can absorb the impact force, reducing the impact force transmitted to the interior of the battery pack 200, which can reduce the risk of the battery core 201 in the battery pack 200 being damaged. , thereby improving the safety of use of the battery pack 200.
  • the cross-sectional area of the sub-cavity 235 close to the placement slot 111 has a greater impact on the mode of the battery pack 200, that is, the cross-sectional area of the first sub-cavity 2351 has a greater impact on the mode of the battery pack 200. Influence, the larger the cross-sectional area S1 of the first sub-cavity 2351, the worse the stiffness of the battery pack 200, the lower the mode of the battery pack 200, and the greater the probability of resonance of the battery pack 200.
  • the cross-sectional area has a greater impact on the collision protection of the entire vehicle, that is, the cross-sectional area of the second sub-cavity 2352 has a greater impact on the collision protection of the entire vehicle.
  • the smaller the pressure area the smaller the energy that the side beam 23 can absorb when the entire vehicle collides and an external force invades, and the greater the risk of collision safety. Therefore, by making 0.8 ⁇ S1/S2 ⁇ 1, it is possible to ensure that the battery pack 200 has a suitable mode, reduce the probability of resonance in the battery pack 200, and ensure that the battery pack 200 has a better mode while ensuring that the battery pack 200 has a suitable mode.
  • the collision protection capability allows the battery pack 200 to achieve a balance between the entire package mode and the entire vehicle collision protection.
  • the partition 232 when the side beam 23 is placed in the placement manner in FIG. 11 , from the upper end to the lower end of the side beam 23 , the partition 232 faces away from the placement slot 111 The direction is tilted. It can also be understood that the partition 232 is tilted in a direction away from the installation space 21 of the battery tray 100 . It can also be understood that the partition 232 is tilted in a direction away from the placement slot 111 from above to below the battery tray 100 . Extended, the partition 232 divides the cavity 2311 into a first sub-cavity 2351 and a second sub-cavity 2352. This arrangement can improve the structural strength of the side beam 23, improve the stability of the side beam 23, and thus improve the support of the side beam 23.
  • the battery core 201 capacity can also further reduce the risk of frame 20 deformation.
  • the partition 232 is vertically connected between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311 .
  • Such arrangement can make the partition 232 more reliably supported between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311, which can improve the structural strength of the side beam 23 and improve the stability of the side beam 23, thereby improving the side beam 23.
  • the ability of the beam 23 to support the battery core 201 can also further reduce the risk of deformation of the frame 20 .
  • the cross-sectional shape of the first sub-cavity 2351 and the cross-sectional shape of the second sub-cavity 2352 are both triangular or trapezoidal. Such an arrangement can enhance the side beam 23 The structural stability can further reduce the risk of deformation of the side beam 23, thereby further extending the service life of the side beam 23 and the battery tray 100.
  • the first sub-cavity 2351 is located on a side of the second sub-cavity 2352 close to the installation space 21.
  • the cross-sectional shape of the first sub-cavity 2351 is a triangle. Further, the triangle is an isosceles triangle or An equilateral triangle, the bottom wall 234 of the cavity 2311 forms the bottom wall of the triangle. This arrangement can further improve the structural stability of the side beam 23 and further reduce the risk of deformation of the side beam 23, thereby further extending the length of the side beam 23 and the battery tray 100. service life.
  • the angle between the bottom wall 234 of the cavity 2311 and the partition 232 is configured as the base angle of a triangle, and the angle of the base angle is ⁇ 1, satisfying the relationship: 50° ⁇ 1 ⁇ 70° , for example, ⁇ 1 is 60°.
  • This setting can further improve the structural stability of the side beam 23 and further reduce the risk of deformation of the side beam 23, thereby further extending the service life of the side beam 23 and the battery tray 100.
  • the vertex angle of the triangle is ⁇ 1, which satisfies the relationship: 50° ⁇ 1 ⁇ 70°.
  • ⁇ 1 is 60°.
  • This setting can set the cross-sectional shape of the first sub-cavity 2351 to Equilateral triangle, such an arrangement can further improve the structural stability of the side beam 23 and further reduce the risk of deformation of the side beam 23, thereby further extending the service life of the side beam 23 and the battery tray 100.
  • the first sub-cavity 2351 is located on the side of the second sub-cavity 2352 close to the mounting groove 111.
  • the cross-sectional shape of the cavity 2351 is set to a trapezoid.
  • the bottom wall 234 of the cavity 2311 constitutes a trapezoidal bottom wall.
  • the angle between the bottom wall 234 of the cavity 2311 and the partition 232 is configured as the angle of the first sub-cavity 2351
  • the base angle of the trapezoid, the angle of the base angle is ⁇ 2, and satisfies the relationship: 50° ⁇ 2 ⁇ 70°, for example, ⁇ 2 is 60°.
  • This setting can further improve the structural stability of the side beam 23, further reduce the risk of deformation of the side beam 23, and thereby further extend the service life of the side beam 23 and the battery tray 100. .
  • the angle between the two waists of the trapezoid of the first sub-cavity 2351 is ⁇ 2, which satisfies the relationship: 50° ⁇ 2 ⁇ 70°.
  • ⁇ 2 is 60°. This setting can further improve the structural stability of the side beam 23 and further reduce the risk of deformation of the side beam 23, thus further extending the service life of the side beam 23 and the battery tray 100.
  • the cross-sectional shape of the second sub-cavity 2352 is set to a trapezoid, and the bottom wall 234 of the cavity 2311 constitutes the trapezoidal top wall of the second sub-cavity 2352.
  • the cavity 2311 The top wall 233 constitutes the trapezoidal bottom wall of the second sub-cavity 2352.
  • the side beam body 231 also has a support portion 22 extending toward the installation groove 111 of the battery tray 100 .
  • the support portion 22 is located below the tray bottom plate 10 .
  • the support portion 22 is used to support the components in the tray bottom plate 10 .
  • the battery cells 201 and the side beams 23 mainly bear the weight of the battery cells 201.
  • the tray bottom plate 10 of the battery tray 100 carries a small part of the weight of the battery cells 201, which greatly reduces the load-bearing requirements of the pallet bottom plate 10.
  • the side beam 23 is constructed as a one-piece molded piece.
  • the side beam 23 can be made of aluminum material, and the side beam 23 can also be made of steel material, but the application is not limited thereto.
  • the side beam 23 can also be made of other metal materials that have the same function as steel materials.
  • the side beam 23 is made of steel material.
  • the side beam 23 can be formed by rolling of steel material.
  • the side beam 23 can also be formed by extrusion of steel material. Among them, by arranging the side beam 23 as an integrally formed part, the load-bearing capacity of the side beam 23 can be improved, and the risk of deformation of the side beam 23 can be reduced.
  • the side beam 23 made of steel material can withstand high temperatures above 1500°C, ensuring the integrity of the side beam 23 when the battery core 201 thermally runs away.
  • the cavity 2311 in the width direction of the side beam 23 , has a first side wall 236 disposed away from the placement groove 111 , and the first side wall 236 is connected to the cavity. 2311 and the bottom wall 234 of the cavity 2311, and the first side wall 236 is connected to the partition 232.
  • FIG. 10 in the width direction of the side beam 23 , the cavity 2311 has a first side wall 236 disposed away from the placement groove 111 , and the first side wall 236 is connected to the cavity. 2311 and the bottom wall 234 of the cavity 2311, and the first side wall 236 is connected to the partition 232.
  • the lower end of the first side wall 236 is connected to a first connecting portion 238 extending toward the cavity 2311 , and the first connecting portion 238 is located on the bottom wall 234 of the cavity 2311 Facing the side of the top wall 233 of the cavity 2311, the first side wall 236 is connected to the bottom wall 234 and the partition 232 of the cavity 2311 through the first connecting portion 238, and the first connecting portion 238 is connected to the bottom wall of the cavity 2311.
  • 234 is fixedly connected, for example, the first connecting portion 238 is welded to the bottom wall 234 of the cavity 2311. This arrangement can further improve the structural strength of the side beam 23 and further improve the stability of the side beam 23.
  • the cavity 2311 in the width direction of the side beam 23 , has a second side wall 237 close to the placement slot 111 , and the second side wall 237 is connected to the cavity. 2311 and the bottom wall 234 of the cavity 2311, and the second side wall 237 is connected to the partition 232. In some optional embodiments, as shown in FIG.
  • the upper end of the second side wall 237 is connected to a second connecting portion 239 extending toward the cavity 2311 , and the second connecting portion 239 is located on the top wall 233 of the cavity 2311 Facing the side of the bottom wall 234 of the cavity 2311, the second side wall 237 is connected to the top wall 233 and the partition 232 of the cavity 2311 through the second connecting portion 239, and the second connecting portion 239 is connected to the top wall of the cavity 2311.
  • the second connecting part 239 is welded to the top wall 233 of the cavity 2311, and the top wall 233 of the cavity 2311, the bottom wall 234 of the cavity 2311, the first side wall 236 and the second side wall 237 are jointly defined
  • this arrangement can further enhance the structural strength of the side beam 23 and further improve the stability of the side beam 23.
  • the side beam 23 includes a support portion 22.
  • the support portion 22 is provided on the side of the side beam body 231 close to the placement groove 111.
  • the support portion 22 is used for supporting Cell 201. That is, the side beam body 231 is connected to a support portion 22 extending toward the placement groove 111 .
  • the support portion 22 is used to support the battery core 201 in the tray bottom plate 10 of the battery tray 100 .
  • the support portion 22 is supported on the lower surface of the tray bottom plate 10 to Supporting the battery cells 201, the side beams 23 bear most of the weight of the battery cells 201.
  • the tray bottom plate 10 of the battery tray 100 does not bear the weight of the battery cells 201 or only carries a small part of the weight of the battery cells 201, which greatly reduces the load-bearing requirements of the pallet bottom plate 10. .
  • the lower end of the second side wall 237 is connected to a support portion 22 extending toward the placement slot 111 .
  • the support portion 22 can be used to support the tray bottom plate 10
  • the second side wall 237 is connected to the bottom of the tray through the support portion 22 .
  • the bottom wall 234 of the cavity 2311 is connected.
  • the wall 234 has a structural reinforcement part 2341 that extends to the bottom of the support part 22.
  • the structural reinforcement part 2341 is connected to the end of the support part 22 close to the pallet bottom 10. It can also be understood that the structural reinforcement part 2341 extends to the bottom of the support part 22, leaving no space.
  • the end of the bottom wall 234 of the cavity 2311 close to the placement slot 111 is connected to the end of the structural reinforcement 2341 close to the placement slot 111.
  • the structural reinforcement 2341 is provided with a boss protruding toward the support portion 22 (i.e., a boss structure 2391), the boss structure 2391 is connected to the support part 22. This arrangement can further improve the structural strength of the side beam 23 and further improve the stability of the side beam 23.
  • the structural reinforcement 2341 is provided with multiple boss structures 2391.
  • the multiple boss structures 2391 are sequentially arranged in the width direction of the side beam 23. At least one boss in the multiple boss structures 2391
  • the structure 2391 is located below the battery core 201. This arrangement enables the boss structure 2391 to support the battery core 201, which can further improve the load-bearing capacity of the frame 20 and reduce the risk of deformation of the support portion 22.
  • the cavity 2311 in the width direction of the side beam 23 , has a first side wall 236 disposed away from the placement slot 111 , and the first side wall 236 is connected to the cavity 2311 Between the top wall 233 and the bottom wall 234 of the cavity 2311, the cavity 2311 has a second side wall 237 close to the placement groove 111. The second side wall 237 is connected between the top wall 233 of the cavity 2311 and the bottom wall of the cavity 2311.
  • the top wall 233 of the cavity 2311, the bottom wall 234 of the cavity 2311, the first side wall 236 and the second side wall 237 jointly define the cavity 2311, and the bottom wall 234 of the cavity 2311 faces the placement slot 111 Extend to form a support portion 22 for supporting the pallet bottom plate 10.
  • the support portion 22 is located below the pallet bottom plate 10.
  • the support portion 22 extends to below the battery core 201. Such an arrangement can enable the support portion 22 to support the battery core 201 and further enhance the side rails. 23 load bearing capacity.
  • the second side wall 237 is connected obliquely between the top wall 233 of the cavity 2311 and the bottom wall 234 of the cavity 2311 , from the upper end to the lower end of the side beam 23 , the second side wall 237 Inclined toward the placement slot 111, such an arrangement can further improve the structural strength of the side beam 23, further improve the stability of the side beam 23, thereby further improving the side beam 23's ability to support the battery core 201, and further reducing the risk of deformation of the frame 20. .
  • the battery tray 100 includes: a tray bottom plate 10 (the tray bottom plate 10 in the above embodiment) and a frame 20 (the frame 20 in the above embodiment).
  • the tray bottom 10 includes a bottom body 11 and an extension 12.
  • the bottom body 11 defines a placement slot 111 for placing the battery core 201 or the battery module.
  • This application uses the placement slot 111 to place the battery core 201 as an example for illustration.
  • the battery core 201 It can be bonded in the placement groove 111 through structural glue.
  • the placement slot 111 has a bottom wall 113 of the placement slot, and the bottom wall 113 of the placement slot has a pressure-bearing area 112 for supporting the battery core 201.
  • the pressure-bearing area 112 refers to the area where the battery core 201 is installed.
  • the orthographic projection of the bottom wall 113 of the placing slot coincides with the orthographic projection of the battery core 201 , or it can also be understood as, when the battery core 201 is installed in the placing slot 111 , the contact area between the battery core 201 and the bottom wall 113 of the placement slot.
  • the contact area includes the area where the battery core 201 is in direct contact with the bottom wall 113 of the placement slot or the area in indirect contact.
  • the battery core 201 when the battery core 201 is in contact with the bottom wall 113 of the placement slot, When there is adhesive or cooling structure between the battery core 201 and the bottom wall 113 of the placement slot, the battery core 201 is in indirect contact with the bottom wall 113 of the placement slot. When there is no other object between the battery core 201 and the bottom wall 113 of the placement slot, the battery core 201 and the bottom wall 113 of the placement slot.
  • the area where the wall 113 is in direct contact, or it can also be understood that the weight of the battery core 201 directly acts on the bottom wall 113 of the placement slot is the pressure area 112 .
  • the orthographic projection of the bottom wall 113 of the placement groove is the projection of the bottom wall 113 of the placement groove in a plane perpendicular to the height direction of the battery tray 100 .
  • the orthographic projection of the battery core 201 is also the projection of the battery core 201 in a plane perpendicular to the height direction of the battery tray 100 .
  • the battery core 201 When the battery core 201 is installed in the battery tray 100, the battery core 201 is located in the pressure area 112 of the placement groove 111, and the extension portion 12 extends along the circumferential edge of the base plate body 11. Further, the extension portion 12 is configured as a ring structure. , specifically, the extension portion 12 is configured as a closed loop structure.
  • the frame 20 defines an installation space 21, and the base plate body 11 is installed on the frame 20. Further, the base plate body 11 is fixedly installed on the frame 20. The base plate body 11 can be bonded to the frame 20. The base plate body 11 can also be installed on the frame 20 through bolts. The specific assembly method of the bottom plate body 11 and the frame 20 is not specifically limited and can be selected according to actual needs.
  • the base body 11 is installed in the installation space 21 , and the extension portion 12 is located outside the installation space 21 . In the height direction of the battery tray 100 , the extension portion 12 is located above and provided on the frame 20 .
  • the frame 20 includes side beams, a front end beam 24 and a rear end beam 25 , and at least one of the side beams, the front end beam 24 and the rear end beam 25 is
  • the side beam 23, the front end beam 24 and the rear end beam 25 are connected to form the installation space 21.
  • the connection between the side beam, the front end beam 24 and the rear end beam 25 includes direct connection and indirect connection, for example:
  • the connection between the side beam and the front end beam 24 is taken as an example.
  • the side beam and the front end beam 24 can be directly connected, and the side beam and the front end beam 24 can also be indirectly connected through other beams.
  • the side beams and/or the front end beams 24 and/or the rear end beams 25 have support portions 22 extending toward the installation space 21 , which can also be understood as the side beams, the front end beams 24 and the rear end beams. At least one of the beams 25 has a support portion 22 extending toward the installation space 21 , and the support portion 22 is used to support the pallet bottom 10 .
  • the number of side beams can be two, and the number of the rear end beam 25 and the front end beam 24 can each be one.
  • the front end beam 24 and the rear end beam 25 are spaced apart in the front and rear directions of the frame 20 so that the front end beam 24 and the rear end beam 25 Together with the two side beams, the installation space 21 is defined.
  • the battery cores 201 are extended and placed along the left-right direction in FIG. 8 , by arranging the support portion 22 on the side beam, it can be ensured that each battery core 201 is supported by the support portion 22 , and it can further ensure that the support portion 22 is opposite to the battery core.
  • 201 for support can further ensure that the frame 20 is mainly used to carry the weight of the battery core 201, so that the support portion 22 can be set in a reasonable position.
  • the width direction of the battery tray 100 may be consistent with the vehicle width direction, and the length direction of the battery tray 100 may be consistent with the vehicle length direction.
  • the width direction of the battery tray 100 can also be consistent with the vehicle length direction, and the length direction of the battery tray 100 can be consistent with the vehicle width direction.
  • the support portion 22 is used to support the pressure-bearing area 112 of the pallet bottom 10 .
  • this application takes the battery tray 100 placed in the up and down direction as an example.
  • the extension 12 is provided outside the installation space 21, and the battery In the up and down direction of the tray 100, the extension part 12 is arranged corresponding to the frame 20.
  • the extension portion 12 can cover the entire upper surface of the frame 20 .
  • the battery core 201 when the battery core 201 is installed in the placement slot 111, the battery core 201 is located in the pressure area 112, the support part 22 supports the pressure area 112, and the weight of the battery core 201 is carried on the frame 20.
  • the frame 20 carries most of the weight of the battery cells 201, and the pallet bottom plate 10 does not bear the weight of the battery cells 201 or carries a small part of the weight of the battery cells 201, which greatly reduces the load-bearing requirements of the pallet bottom plate 10.
  • the pallet bottom plate 10 can be used with lower strength and thicker Made of thin material.
  • the pallet bottom 10 is provided as a non-metallic piece.
  • the pallet bottom plate 10 is configured as an insulating member, and the pallet bottom plate 10 made of lightweight non-metallic composite materials can be used.
  • the lightweight non-metallic composite material can be made of resin and fiberglass.
  • the resin can be epoxy resin or polyurethane, but the application is not limited thereto.
  • the lightweight composite material can also be made of other composite materials that play the same role as resin and glass fiber. Such an arrangement can reduce the size of the pallet.
  • the weight of the bottom plate 10 is conducive to the lightweight design of the battery tray 100 and the battery pack 200.
  • the existing tray bottom plate 10 is made of aluminum material. This application can reduce the weight of the pallet bottom plate 10 by using non-metallic composite materials to make the tray bottom plate 10.
  • the production cost is beneficial to reducing the production cost of the battery tray 100 and the battery pack 200 .
  • the pallet bottom plate 10 made of non-metallic composite materials has excellent electrical insulation properties. When the vehicle 2000 is severely grounded, the battery pack 200 will not be exposed to high-voltage risks such as arcing.
  • the pallet bottom plate 10 is constructed as a one-piece molded part, and the pallet bottom plate 10 is molded using a lightweight non-metallic composite material. During the molding process, the pallet bottom plate 10 forms a good airtight seal due to the resin melt flow and solidification. At the same time, the mold molding can ensure that the pallet bottom plate 10 has good flatness and dimensional accuracy, and ensures the sealing function of the pallet bottom plate 10.
  • the frame 20 can be formed by metal tailor welding. After welding, only the strength of the welding structure and the necessary product flatness need to be ensured. The tailor welding efficiency is high, which improves the production efficiency of the battery tray 100.
  • the bottom plate 10 of the tray is responsible for sealing and does not require welding.
  • the pallet bottom plate 10 can be molded using composite materials.
  • the pallet bottom plate 10 has high production efficiency and high mold precision, thereby achieving higher flatness and reducing the size requirements of the battery core 201 .
  • the existing battery tray 100 does not differentiate between the two functions of load-bearing and sealing in the product structure.
  • the battery tray 100 it is necessary to consider that both the overall load-bearing and sealing requirements must be met, resulting in poor manufacturing efficiency of the battery tray 100.
  • the rate and yield rate are low.
  • the two functions of load-bearing and sealing are distinguished.
  • the frame 20 is mainly responsible for load-bearing, and the tray bottom plate 10 is mainly responsible for sealing, which improves the manufacturing efficiency and low yield rate of the battery tray 100 .
  • the frame 20 mainly carries the weight of the battery core 201, and the tray bottom plate 10 only carries a small part of the weight of the battery core 201.
  • the tray bottom plate 10 mainly plays a sealing role, which can reduce the thickness of the tray bottom plate 10.
  • the tray bottom plate 10 made of lightweight composite materials can be used, which is beneficial to the lightweight design and cost reduction of the battery tray 100 and the battery pack 200.
  • the tray bottom plate 10 and the frame 20 are assembled together, there is no welding that causes the battery tray to 100 The risk of seal failure is eliminated, and there is no need to perform weld grinding or battery tray 100 air tightness testing, which improves battery tray 100 production efficiency.
  • the pallet bottom 10 and the frame 20 are sealedly connected.
  • the frame 20 is provided with a plurality of bolt holes 28 .
  • the extension 12 is provided with a plurality of escape through holes 122 .
  • the plurality of bolt holes 28 and the plurality of escape through holes 122 are arranged in one-to-one correspondence.
  • There are pre-embedded in the frame 20 A plurality of blind rivet nuts are arranged in one-to-one correspondence with a plurality of bolt holes 28 , and the blind rivet nuts pass through the avoidance through holes 122 and the bolt holes 28 .
  • the battery pack 200 includes a cover 40 .
  • the cover 40 and the tray bottom 10 jointly define a placement cavity 41 for placing the battery core 201 , and the cover 40 is connected to the frame 20 .
  • the cover 40 covers the open end of the placement groove 111 to define the placement cavity 41.
  • the extension 12 is sandwiched between the cover 40 and the frame 20. Bolts are used to pass through the cover 40 and the extension 12 to avoid The through holes 122 and the bolt holes 28 of the frame 20 are connected with rivet nuts, thereby assembling the cover 40 , the tray bottom plate 10 and the frame 20 together. Through the sealing connection between the tray bottom plate 10 and the frame 20, the bolts and the bolt holes 28 are sealed, which can improve the sealing performance of the battery tray 100 and prevent water vapor from flowing into the placement groove 111 from the bolt holes 28 on the frame 20. It can also be This prevents the battery pack 200 from short-circuiting, thereby improving the safety of the battery pack 200.
  • the tray bottom 10 and the frame 20 are sealingly connected through a sealing structure 13.
  • the sealing structure 13 is constructed as sealant, and the sealing structure 13 can also be constructed as a rubber piece, but The application is not limited to this, and the sealing structure 13 may also be configured as a sealing member that plays the same role as the sealant.
  • the sealing structure 13 can be sandwiched in the entire space between the pallet bottom plate 10 and the frame 20.
  • the sealing structure 13 can be sandwiched in part of the space between the pallet bottom plate 10 and the frame 20.
  • the sealing structure 13 can surround the bolt holes 28 and avoid.
  • the through hole 122 is provided.
  • the sealing structure 13 can extend into the bolt hole 28 and the avoidance through hole 122.
  • Such an arrangement can achieve a sealed connection between the pallet bottom plate 10 and the frame 20, and can effectively prevent water vapor from flowing through the bolts on the frame 20.
  • the hole 28 flows into the placement cavity 41 .
  • a sealing structure 13 is provided between the extension part 12 and the frame 20 . Since the avoidance through hole 122 is provided at the extension part 12 , the sealing structure 13 is provided at Between the extension part 12 and the frame 20, the sealing structure 13 can be ensured to seal the bolt hole 28 and the avoidance through hole 122, so that the sealing structure 13 can be installed in a reasonable position.
  • the orthogonal projection of the support portion 22 and the orthogonal projection of the pressure area 112 has an overlapping area.
  • this arrangement can ensure that the support portion 22 supports the battery core 201 and ensure that the frame 20 is mainly used to bear the weight of the battery core 201.
  • the bottom wall 113 of the placement groove 111 is formed with a pressure area 112. It can also be understood that the pressure area 112 is provided on the bottom wall 113 of the placement groove 111.
  • the support part 22 is located below the bottom plate body 11, and the support part 22 is supported on the bottom wall 113. This arrangement can ensure that the support part 22 is supported below the pressure area 112, which can further ensure support.
  • the portion 22 supports the battery core 201, which can further ensure that the frame 20 is mainly used to carry the weight of the battery core 201, so that the pressure-bearing area 112 can be set in a reasonable position.
  • the frame 20 also includes a support beam 26, which is connected between the two side beams 23, or the support beam 26 is connected between the front end beam 24 and the rear end beam 25. between, or the support beam 26 is connected between the front end beam 24 and the side beam 23, or the support beam 26 is connected between the rear end beam 25 and the side beam 23, this arrangement can improve the structural strength of the frame 20, thereby improving the battery Structural strength of pallet 100.
  • the battery tray 100 also includes an expansion beam 27 .
  • the expansion beam 27 is provided on the side of the tray bottom plate 10 away from the frame 20 .
  • the expansion beam 27 is arranged above the pallet bottom plate 10.
  • the expansion beam 27 is installed on the support beam 26 through bolts. After the battery core 201 is installed in the placement slot 111, when the battery core 201 expands, the expansion beam 27 can limit the battery core 201. position to improve the safety of battery cell 201.
  • a plurality of support beams 26 are provided, and the plurality of support beams 26 are spaced apart in sequence along the length direction of the side beam 23.
  • the length direction of the side beam 23 refers to the front and rear direction in Figure 6.
  • a plurality of expansion beams 27 are arranged at intervals along the length direction of the side beam 23.
  • a plurality of expansion beams 27 and a plurality of support beams 26 are arranged in one-to-one correspondence.
  • An expansion beam 27 is installed on a support beam 26 through bolts, so that the expansion beam 27 can be Securely mounted on frame 20.
  • the support part 22 is provided close to the lower end of the side beam 23. It can also be understood that the support part 22 is provided close to the end of the side beam 23 away from the pallet bottom plate 10, and the bottom plate body 11 is installed in the installation space 21, by arranging the support part 22 close to the end of the side beam 23 away from the pallet bottom plate 10, it can ensure that the support part 22 is supported under the bottom plate body 11, and also ensure that the bottom plate body 11 can be installed in the installation space. Within space 21.
  • the upper end of the placement slot 111 is open, and the battery core 201 can be removed from the placement slot.
  • the open end of 111 is put into the placement slot 111.
  • the extension portion 12 extends circumferentially along the open end of the placement slot 111.
  • the extension portion 12 is connected to the upper end of the base plate body 11. After the base plate body 11 is installed in the installation space 21, such an arrangement can make the extension
  • the portion 12 is disposed outside the placement groove 111, which ensures that the extension portion 12 is disposed corresponding to the frame 20 in the up and down direction of the battery tray 100, thereby ensuring the sealing of the battery tray 100.
  • the surface of the support part 22 close to the pallet bottom 10 is configured as a plane. That is to say, as shown in FIG. 11 , the upper surface of the support part 22 It is set as a plane, so that the support area of the support part 22 and the bottom plate body 11 can be ensured, and the support part 22 can better support the battery core 201 .
  • the support portion 22 is located below the base body 11 and is fixedly connected to the base body 11 .
  • the tray bottom 10 is bonded to the frame 20 . Further, by applying adhesive (such as structural glue) between the tray bottom plate 10 and the frame 20, the support portion 22 and the bottom plate body 11 are bonded and connected, and the thickness control of the adhesive is used to absorb the dimensional tolerance of the frame 20. At the same time, the pallet bottom plate 10 has good flatness, and the adhesive can absorb tolerances to reduce the manufacturing requirements for the pallet bottom plate 10 and the frame 20 .
  • adhesive such as structural glue
  • the tray bottom plate 10 is easily deformed during the welding process, which increases the size requirements for the battery cells 201 during the subsequent assembly process of the battery pack 200, affecting the assembly efficiency of the battery pack 200.
  • the deformation of the tray bottom plate 10 can be prevented, and the impact on the battery cells 201 during the subsequent assembly process of the battery pack 200 is reduced.
  • the size requirements improve the assembly efficiency of the battery pack 200.
  • the pallet bottom plate 10 is constructed as a one-piece molded part, and the pallet bottom plate 10 is molded using lightweight composite materials. During the molding process, the pallet bottom plate 10 forms good airtightness after the resin melts, flows, and solidifies. At the same time, mold molding can ensure that the pallet bottom plate 10 has good flatness and dimensional accuracy, and ensures the sealing function of the pallet bottom plate 10 .
  • the frame 20 is constructed as a metal piece.
  • the frame 20 can be made of aluminum material.
  • the frame 20 can also be made of steel material.
  • the frame 20 can also be made of other steel materials.
  • the material is made of the same metal material.
  • the frame 20 is made of steel material.
  • the frame 20 can be formed by rolling of steel material.
  • the frame 20 can also be formed by extrusion of steel material. Among them, by arranging the frame 20 as a metal piece, the load-bearing capacity of the frame 20 can be improved, and the risk of deformation of the frame 20 can be reduced.
  • the frame 20 is connected to a lifting eye structure 30.
  • the lifting eye structure 30 is provided with mounting holes, and the lifting eye structure 30 is installed through fasteners (such as bolts).
  • fasteners such as bolts
  • a battery pack 200 includes a battery core 201 , a battery tray 100 and a cover 40 .
  • the battery tray 100 is the battery tray 100 of the above embodiment.
  • the battery tray 100 has a placement slot 111.
  • the battery core 201 is placed in the placement slot 111.
  • the cover 40 and the tray bottom plate 10 jointly define a placement cavity 41 for placing the battery core 201.
  • the cover 40 is connected to the frame 20 . Further, the cover 40 covers the open end of the placement groove 111 to define the placement cavity 41.
  • the extension 12 is sandwiched between the cover 40 and the frame 20. Bolts are used to pass through the cover 40, the extension 12 and the side.
  • the frame 20 assembles the cover 40 , the tray bottom 10 and the frame 20 together. Further, a seal 203 (such as a sealing ring) is sandwiched between the extension 12 and the cover 40.
  • the seal 203 can seal the placement cavity 41, and the cover 40 and the tray bottom 10 define a sealed insulating cavity ( That is, the placement cavity 41), after the battery core 201 is placed in the placement cavity 41, the battery core 201 can be completely isolated from the frame 20.
  • the battery core 201 is in a completely insulated environment, and the battery pack 200 has no risk of leakage.
  • the battery pack 200 may further include: a pressure plate 202 configured as a closed ring structure, with the cover 40 , the seal 203 and the extension 12 sandwiched between the pressure plate 202 and the extension 12 .
  • a pressure plate 202 configured as a closed ring structure, with the cover 40 , the seal 203 and the extension 12 sandwiched between the pressure plate 202 and the extension 12 .
  • the pressure plate 202 can press the entire seal 203 Uniformly, ensuring that the placement cavity 41 is sealed reliably.
  • a vehicle 2000 includes the battery pack 200 of the above embodiment.
  • the battery pack 200 is installed on the vehicle 2000 to provide electric energy to the vehicle 2000.
  • the frame 20 of the battery pack 200 carries most of the battery cells 201.
  • Weight, the pallet bottom plate 10 only carries a small part of the weight of the battery cell 201, and the pallet bottom plate 10 is mainly responsible for the sealing function.
  • the pallet bottom plate 10 made of lightweight composite materials can be used, which is beneficial to the battery tray 100, the battery pack 200, and the vehicle 2000.
  • the pallet bottom plate 10 made of composite materials has excellent electrical insulation properties.
  • the battery pack 200 will not be exposed to high-voltage risks such as arcing, which improves the safety of the vehicle 2000.

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Abstract

一种用于电池托盘（100）的边梁（23）、电池托盘（100）、电池包（200）以及车辆（2000），边梁（23）包括：边梁本体（231），边梁本体（231）限定出空腔（2311），边梁本体（231）具有分隔部（232），分隔部（232）位于空腔内，分隔部（232）连接在空腔的顶壁（233）和底壁（234）之间以将空腔（2311）分隔为第一子腔（2351）和第二子腔（2352），第一子腔（2351）和第二子腔（2352）在边梁（23）的第一方向依次排布，第一子腔（2351）的横截面面积为S1，第二子腔（2352）的横截面面积为S2，满足关系式：0.8＜S1/S2＜1。

Description

用于电池托盘的边梁、电池托盘、电池包以及车辆
相关申请的交叉引用
本申请要求“比亚迪股份有限公司”于2022年03月14日提交的、名称为“用于电池托盘的边梁、电池托盘、电池包以及车辆”的、中国专利申请号“2022102495003”的优先权。
技术领域
本申请涉及电池领域，尤其是涉及一种用于电池托盘的边梁、电池托盘、电池包以及车辆。
背景技术
相关技术中，电池包设置有电池托盘，电池托盘包括边框，边框包括边梁，边梁的结构强度不足、稳定性差，导致边梁容易发生变形，影响边梁使用寿命，并且，边梁受到撞击时，传递至电池包内部碰撞力较大，电池包内电芯被撞坏风险高，影响电池包使用安全性。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请的一个目的在于提出了一种用于电池托盘的边梁，该用于电池托盘的边梁能够提升边梁的结构强度、刚度，也能够保证电池包模态适宜，子腔受到撞击时能够吸收碰撞力，降低了传递至电池包内部碰撞力大小，从而可以提升电池包使用安全性，也可以降低边梁变形风险，可以延长边梁、电池托盘的使用寿命。
本申请进一步地提出了一种电池托盘。
本申请进一步地提出了一种电池包。
本申请进一步地提出了一种车辆。
根据本申请的用于电池托盘的边梁，所述电池托盘具有用于放置电芯的放置槽，所述边梁包括：边梁本体，所述边梁本体限定出空腔，所述边梁本体具有分隔部，所述分隔部位于所述空腔内，所述分隔部连接在所述空腔的顶壁和底壁之间以将所述空腔分隔为第一子腔和第二子腔，所述第一子腔和所述第二子腔在所述边梁的第一方向依次排布，所述第一子腔的横截面面积为S1，所述第二子腔的横截面面积为S2，满足关系式：0.8＜S1/S2＜1。
根据本申请的用于电池托盘的边梁，通过本申请的边梁本体，能够提升边梁的结构强度、刚度，也能够保证电池包模态适宜，可以降低边梁变形风险，从而可以延长边梁、电池托盘的使用寿命，在保证电池包具有适宜模态情况下可以使电池包具有较好的碰撞防护能力。
在本申请的一些示例中，在所述边梁的第一方向上，所述第一子腔位于所述第二子腔和所述放置槽之间。
在本申请的一些示例中，所述分隔部倾斜连接在所述空腔的顶壁和底壁之间。
在本申请的一些示例中，从所述边梁的上端至下端方向，所述分隔部朝向远离所述放置槽倾斜。
在本申请的一些示例中，所述第一子腔的横截面形状和所述第二子腔的横截面形状均为三角形或梯形。
在本申请的一些示例中，所述边梁构造为一体成型件。
在本申请的一些示例中，在所述边梁的宽度方向，所述空腔具有远离所述放置槽设置的第一侧壁，所述第一侧壁连接在所述空腔的顶壁和底壁之间，且所述第一侧壁与所述分隔部连接。
在本申请的一些示例中，所述第一侧壁的下端连接有朝向所述空腔内延伸的第一连接部，所述第一连接部位于所述空腔的底壁朝向所述空腔的顶壁的一侧，所述第一侧壁通过所述第一连接部与所述空腔的底壁及所述分隔部连接，且所述第一连接部与所述空腔的底壁固定连接。
在本申请的一些示例中，所述空腔具有靠近所述放置槽的第二侧壁，所述第二侧壁连接在所述空腔的顶壁和底壁之间，且所述第二侧壁与所述分隔部连接。
在本申请的一些示例中，所述第二侧壁的上端连接有朝向所述空腔内延伸的第二连接部，所述第二连接部位于所述空腔的顶壁朝向所述空腔的底壁的一侧，所述第二侧壁通过所述第二连接部与所述空腔的顶壁及所述分隔部连接，且所述第二连接部与所述空腔的顶壁固定连接。
在本申请的一些示例中，所述边梁包括支撑部，所述支撑部设于所述边梁本体的靠近所述放置槽的一侧，所述支撑部用于支撑所述电芯。
在本申请的一些示例中，所述第二侧壁的下端连接有朝向所述放置槽延伸的支撑部，所述第二侧壁通过所述支撑部与所述空腔的底壁连接。
在本申请的一些示例中，所述第二侧壁倾斜连接在所述空腔的顶壁和底壁之间，且从所述边梁的上端至下端方向，所述第二侧壁朝向靠近所述放置槽倾斜。
在本申请的一些示例中，在所述边梁的宽度方向，所述空腔的底壁具有延伸至所述支撑部下方的结构加强部，所述结构加强部与所述支撑部靠近所述放置槽的端部连接。
在本申请的一些示例中，所述结构加强部设有朝向所述支撑部凸出的凸台，所述凸台与所述支撑部连接。
在本申请的一些示例中，在所述边梁的宽度方向，所述空腔具有远离所述放置槽设置的第一侧壁，所述第一侧壁连接在所述空腔的顶壁和底壁之间；所述空腔具有靠近所述放置槽的第二侧壁，所述第二侧壁连接在所述空腔的顶壁和底壁之间，所述空腔的顶壁、所述空腔的底壁、所述第一侧壁和所述第二侧壁共同限定出所述空腔，且所述空腔的底壁朝向所述放置槽延伸以形成用于支撑所述电芯的支撑部。
根据本申请的电池托盘，包括上述的用于电池托盘的边梁。
根据本申请的电池托盘，包括：托盘底板，所述托盘底板包括底板本体和延伸部，所述底板本体限定出用于放置电芯的放置槽，所述延伸部沿所述底板本体的周向边缘延伸；边框，所述边框包括侧梁、前端梁和后端梁，所述侧梁为所述边梁，所述侧梁、所述前端梁和所述后端梁相连以形成安装空间，所述底板本体安装于所述安装空间，在所述电池托盘的高度方向，所述延伸部位于所述边框上方且设于所述边框，所述侧梁、所述前端梁和所述后端梁中的至少一个具有朝向所述安装空间内延伸的支撑部，所述支撑部用于支撑所述托盘底板。
根据本申请的电池包，包括：电芯；电池托盘，所述电池托盘为上述的电池托盘，所述电池托盘具有放置槽，所述电芯放置在所述放置槽内。
根据本申请的车辆，包括上述的电池包。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1是根据本申请实施例的电池包的爆炸图；
图2是根据本申请实施例的电池包的截面图；
图3是图2中A处放大图；
图4是根据本申请实施例的电池托盘和电芯的装配示意图；
图5是根据本申请实施例的电池托盘的示意图；
图6是根据本申请实施例的电池托盘的爆炸图；
图7是根据本申请实施例的电池托盘的托盘底板的示意图；
图8是根据本申请实施例的电池托盘的边框的示意图；
图9是根据本申请实施例的电池托盘的侧梁的示意图；
图10是图9中B处放大图；
图11是根据本申请实施例的电池托盘和电芯装配的局部放大图；
图12是根据本申请实施例的边梁的截面图；
图13是根据本申请实施例的边梁的另一个实施例示意图；
图14是根据本申请实施例的车辆示意图。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
下面参考图1-图13描述根据本申请实施例的用于电池托盘100的边梁23，多个边梁23相连构造为电池托盘100的边框20，边框20限定出安装空间21，电池托盘100应用于电池包200，电池托盘100具有用于支撑电芯201的托盘底板10，边梁23与托盘底板10连接。电池托盘100具有用于放置电芯201的放置槽111。
如图1-图13所示，根据本申请实施例的边梁23，边梁23包括边梁本体231，边梁本体231限定出空腔2311，边梁本体231具有分隔部232，分隔部232位于空腔内，分隔部232连接在空腔2311的顶壁233和空腔2311的底壁234之间，分隔部232可以将空腔2311分隔为第一子腔2351和第二子腔2352，第一子腔2351和第二子腔2352在边梁23的第一方向依次排布，边梁23的第一方向是指边梁23的宽度方向或者电池托盘100的宽度方向或电池托盘100的长度方向，当电池托盘100以图11中的放置方式放置时，边梁23的宽度方向是指图11中的左右方向。需要解释的是，分隔部232连接在空腔2311的顶壁233和空腔2311的底壁234之间可以将空腔2311分隔为多个子腔235，当分隔部232将空腔2311分隔为两个子腔235时，两个子腔235分别为第一子腔2351和第二子腔2352，当分隔部232将空腔2311分隔为四个子腔235时，四个子腔235在边梁23的第一方向依次排布，相邻两个子腔235构成第一子腔2351，另外相邻两个子腔235构成第二子腔2352，当分隔部232将空腔2311分隔为六个子腔235时，六个子腔235在边梁23的第一方向依次排布，相邻三个子腔235构成第一子腔2351，另外相邻三个子腔235构成第二子腔2352，以此类推，本申请以分隔部232将空腔2311分隔为两个子腔235为例进行说明。
第一子腔2351的横截面面积为S1，第二子腔2352的横截面面积为S2，满足关系式：0.8＜S1/S2＜1，进一步地，0.8＜S1/S2＜0.99。其中，第一子腔2351的横截面面积是指在边梁23的宽度方向上的截面面积，也即，第一子腔2351的与边梁23的长度方向垂直的截面面积，第二子腔2352的横截面面积是指在边梁23的宽度方向上的截面面积，也即，第二子腔2352的与边梁23的长度方向垂直的截面面积。通过分隔部232将空腔2311分隔为第一子腔2351和第二子腔2352，能够提升边梁23的结构强度、刚度，可以降低边梁23变形风险，从而可以延长边梁23、电池托盘100的使用寿命，并且，第一子腔2351和第二子腔2352中远离电池托盘100的安装空间21的子腔235受到撞击时，受到撞击的子腔235能够吸收碰撞力，降低了传递至电池包200内部碰撞力大小，可以降低电池包200内电芯201被撞坏风险，从而可以提升电池包200使用安全性。同时，通过0.8＜S1/S2＜1，能够保证电池包200模态适宜，降低电池包200发生共振的概率，在保证电池包200具有适宜模态情况下可以使电池包200具有较好的碰撞防护能力，可以使电池包200在整包模态和整车碰撞防护之间取得平衡。在本申请的一些实施例中，分隔部232倾斜连接在空腔2311的顶壁233和空腔2311的底壁234之间，通过分隔部232倾斜连接在空腔2311的顶壁233和空腔2311的底壁234之间，使分隔部232可靠支撑在空腔2311的顶壁233和空腔2311的底壁234之间，能够提升边梁本体231的结构强度和刚度，也能够提升边梁本体231结构稳定性，可以降低边梁23变形风险，从而可以延长边梁23、电池托盘100的使用寿命。
在本申请的一些实施例中，如图12所示，在边梁23的第一方向上，第一子腔2351位于第二子腔2352和放置槽111之间，也可以理解为，第一子腔2351位于第二子腔2352和 电池托盘100的安装空间21之间。其中，当边梁23以图12中的放置方式放置时，边梁23的左侧为放置槽111，左侧的子腔235为第一子腔2351，右侧的子腔235为第二子腔2352，通过将第一子腔2351和第二子腔2352在边梁23的宽度方向依次排布设置，多个子腔235中远离放置槽111的子腔235受到撞击时，即位于图12中右侧的第二子腔2352受到撞击时，受到撞击的第二子腔2352能够吸收碰撞力，降低了传递至电池包200内部碰撞力大小，可以降低电池包200内电芯201被撞坏风险，从而可以提升电池包200使用安全性。
并且，在电池包200中，靠近放置槽111的子腔235的横截面面积对于电池包200模态有较大影响，即第一子腔2351的横截面面积对于电池包200模态有较大影响，第一子腔2351的横截面面积S1越大，电池包200刚度越差，电池包200模态越低，电池包200发生共振的概率越大，远离放置槽111的子腔235的横截面面积对于整车碰撞防护有较大影响，即第二子腔2352的横截面面积对于整车碰撞防护有较大影响，第二子腔2352的横截面面积S2越大，第二子腔2352受压区域越小，当整车碰撞有外力侵入时边梁23可以吸收的能量越小，碰撞安全风险越大。因此，通过使0.8＜S1/S2＜1，能够保证电池包200模态适宜，降低电池包200发生共振的概率，在保证电池包200具有适宜模态情况下可以使电池包200具有较好的碰撞防护能力，可以使电池包200在整包模态和整车碰撞防护之间取得平衡。
在本申请的一些实施例中，如图11和图12所示，当边梁23以图11中的放置方式放置时，从边梁23的上端至下端方向，分隔部232朝向远离放置槽111方向倾斜设置，也可以理解为，分隔部232朝向远离电池托盘100的安装空间21方向倾斜设置，也可以理解为，从电池托盘100上方至下方方向，分隔部232朝向远离放置槽111的方向倾斜延伸设置，分隔部232将空腔2311分隔为第一子腔2351和第二子腔2352，这样设置能够提升边梁23结构强度，可以提高边梁23的稳定性，从而可以提升边梁23支撑电芯201能力，也可以进一步降低边框20变形风险。
在本申请的一些实施例中，分隔部232竖直连接在空腔2311的顶壁233和空腔2311的底壁234之间。如此设置能够使分隔部232更加可靠支撑在空腔2311的顶壁233和空腔2311的底壁234之间，可以提升边梁23结构强度，可以提高边梁23的稳定性，从而可以提升边梁23支撑电芯201能力，也可以进一步降低边框20变形风险。
在本申请的一些实施例中，如图11和图12所示，第一子腔2351的横截面形状和第二子腔2352的横截面形状均为三角形或者梯形，如此设置能够提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
根据本申请的一个具体实施例，第一子腔2351位于第二子腔2352的靠近安装空间21的一侧，第一子腔2351的横截面形状为三角形，进一步地，三角形为等腰三角形或等边三角形，空腔2311的底壁234构成三角形的底壁，这样设置能够进一步提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
在一些可选的实施例中，空腔2311的底壁234和分隔部232之间的夹角构造为三角形的底角，底角的角度为β1，满足关系式：50°≤β1≤70°，例如，β1为60°，如此设置能够进一步提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
在一些可选的实施例中，三角形的顶角为α1，满足关系式：50°≤α1≤70°，例如，α1为60°，这样设置能够将第一子腔2351的横截面形状设置为等边三角形，这样设置能够进一步提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
根据本申请的另一个具体实施例，如图11和图12所示，在边梁23宽度方向上，第一子腔2351位于第二子腔2352的靠近安装槽111的一侧，第一子腔2351的横截面形状设置为梯形，进一步地，空腔2311的底壁234构成梯形的底壁，空腔2311的底壁234和分隔部232之间的夹角构造为第一子腔2351的梯形的底角，底角的角度为β2，满足关系式： 50°≤β2≤70°，例如，β2为60°，这样设置能够进一步提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
在一些可选的实施例中，如图12所示，第一子腔2351的梯形的两个腰之间的夹角为α2，满足关系式：50°≤α2≤70°，例如，α2为60°，如此设置能够进一步提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
在本申请的一些实施例中，如图12所示，第二子腔2352的横截面形状设置为梯形，空腔2311的底壁234构成第二子腔2352的梯形的顶壁，空腔2311的顶壁233构成第二子腔2352的梯形的底壁，这样设置能够进一步提升边梁23结构稳定性，可以进一步降低边梁23变形风险，从而可以进一步延长边梁23、电池托盘100的使用寿命。
在本申请的一些实施例中，边梁本体231还具有朝向电池托盘100的安装槽111延伸的支撑部22，支撑部22位于托盘底板10的下方，支撑部22用于支撑托盘底板10内的电芯201，边梁23主要承载电芯201重量，电池托盘100的托盘底板10承载电芯201的小部分重量，大大减轻托盘底板10的承重要求。
在本申请的一些实施例中，如图12和图13所示，边梁23构造为一体成型件。进一步地，边梁23可以由铝材料制成，边梁23也可以由钢材料制成，但本申请不限于此，边梁23也可以由其他与钢材料起到相同的金属材料制成，例如，边梁23由钢材料制成，边梁23可以由钢材料辊压形成，边梁23也可以由钢材料挤出形成。其中，通过将边梁23设置为一体成型件，能够提高边梁23承重能力，可以降低边梁23变形风险。并且，钢材料制成的边梁23能够耐受1500℃以上的高温，保证了边梁23在电芯201热失控时的完整性。
根据本申请的一个实施例，如图10和图11所示，在边梁23的宽度方向，空腔2311具有远离放置槽111设置的第一侧壁236，第一侧壁236连接在空腔2311的顶壁233和空腔2311的底壁234之间，且第一侧壁236与分隔部232连接。在一些可选的实施例中，如图11所示，第一侧壁236的下端连接有朝向空腔2311内延伸的第一连接部238，第一连接部238位于空腔2311的底壁234朝向空腔2311的顶壁233的一侧，第一侧壁236通过第一连接部238与空腔2311的底壁234及分隔部232连接，且第一连接部238与空腔2311的底壁234固定连接，例如第一连接部238与空腔2311的底壁234焊接连接，如此设置能够进一步提升边梁23结构强度，可以进一步提高边梁23的稳定性。
在一些可选的实施例中，如图10和图11所示，在边梁23的宽度方向，空腔2311具有靠近放置槽111的第二侧壁237，第二侧壁237连接在空腔2311的顶壁233和空腔2311的底壁234之间，且第二侧壁237与分隔部232连接。在一些可选的实施例中，如图11所示，第二侧壁237的上端连接有朝向空腔2311内延伸的第二连接部239，第二连接部239位于空腔2311的顶壁233朝向空腔2311的底壁234的一侧，第二侧壁237通过第二连接部239与空腔2311的顶壁233及分隔部232连接，且第二连接部239与空腔2311的顶壁233固定连接，例如第二连接部239与空腔2311的顶壁233焊接连接，空腔2311的顶壁233、空腔2311的底壁234、第一侧壁236和第二侧壁237共同限定出空腔2311，这样设置能够进一步提升边梁23结构强度，可以进一步提高边梁23的稳定性。
在一些可选的实施例中，如图10和图11所示，边梁23包括支撑部22，支撑部22设于边梁本体231的靠近放置槽111的一侧，支撑部22用于支撑电芯201。也即，边梁本体231连接有朝向放置槽111延伸的支撑部22，支撑部22用于支撑电池托盘100的托盘底板10内的电芯201，支撑部22支撑在托盘底板10的下表面以支撑电芯201，边梁23承载电芯201的大部分重量，电池托盘100的托盘底板10不承载电芯201的重量或只承载电芯201的小部分重量，大大减轻托盘底板10的承重要求。
在一些可选的实施例中，第二侧壁237的下端连接有朝向放置槽111延伸的支撑部22，支撑部22可以用于支撑托盘底板10，且第二侧壁237通过支撑部22与空腔2311的底壁234连接。在一些可选的实施例中，如图12所示，在边梁23的宽度方向，空腔2311的底 壁234具有延伸至支撑部22下方的结构加强部2341，结构加强部2341与支撑部22靠近托盘底板10的端部连接，也可以理解为，结构加强部2341延伸至支撑部22的下方，空腔2311的底壁234靠近放置槽111的端部与结构加强部2341靠近放置槽111的端部连接，进一步地，结构加强部2341设置有朝向支撑部22凸出的凸台(即凸台结构2391)，凸台结构2391与支撑部22连接，如此设置能够进一步提升边梁23结构强度，可以进一步提高边梁23的稳定性。
在一些可选的实施例中，结构加强部2341设置有多个凸台结构2391，多个凸台结构2391在边梁23的宽度方向依次设置，多个凸台结构2391中的至少一个凸台结构2391位于电芯201下方，这样设置能够使凸台结构2391支撑电芯201，可以进一步提升边框20的承重能力，降低支撑部22变形风险。
根据本申请的另一个实施例，如图13所示，在边梁23的宽度方向，空腔2311具有远离放置槽111设置的第一侧壁236，第一侧壁236连接在空腔2311的顶壁233和空腔2311的底壁234之间，空腔2311具有靠近放置槽111的第二侧壁237，第二侧壁237连接在空腔2311的顶壁233和空腔2311的底壁234之间，空腔2311的顶壁233、空腔2311的底壁234、第一侧壁236和第二侧壁237共同限定出空腔2311，且空腔2311的底壁234朝向放置槽111延伸以形成用于支撑托盘底板10的支撑部22，支撑部22位于托盘底板10的下方，支撑部22延伸至电芯201下方，如此设置能够使支撑部22支撑电芯201，可以进一步边梁23的承重能力。
在本申请的一些实施例中，第二侧壁237倾斜连接在空腔2311的顶壁233和空腔2311的底壁234之间，从边梁23的上端至下端方向，第二侧壁237朝向靠近放置槽111倾斜设置，如此设置能够进一步提升边梁23结构强度，可以进一步提高边梁23的稳定性，从而可以进一步提升边梁23支撑电芯201能力，也可以进一步降低边框20变形风险。
如图1-图13所示，根据本申请实施例的电池托盘100包括：托盘底板10(上述实施例中的托盘底板10)和边框20(上述实施例中的边框20)。托盘底板10包括底板本体11和延伸部12，底板本体11限定出用于放置电芯201或电池模组的放置槽111，本申请以放置槽111放置电芯201为例进行说明，电芯201可以通过结构胶粘接于放置槽111内。在一些可选的实施例中，放置槽111具有放置槽的底壁113，放置槽的底壁113具有用于支撑电芯201的受压区域112，受压区域112是指电芯201安装于放置槽111内时，在电池托盘100的高度方向，放置槽的底壁113的正投影与电芯201的正投影重合的区域，或者也可以理解为，电芯201安装于放置槽111内时，电芯201与放置槽的底壁113的接触区域，接触区域包括电芯201与放置槽的底壁113直接接触的区域或者间接接触的区域，例如：当电芯201和放置槽的底壁113之间具有粘胶剂或者冷却结构时属于电芯201与放置槽的底壁113间接接触，当电芯201和放置槽的底壁113之间没有其他物体时电芯201与放置槽的底壁113直接接触，或者也可以理解为电芯201的重量直接作用在放置槽的底壁113的区域为受压区域112。其中，在电池托盘100的高度方向，放置槽的底壁113的正投影也即放置槽的底壁113在与电池托盘100的高度方向相垂直的平面内的投影。在电池托盘100的高度方向，电芯201的正投影也即电芯201在与电池托盘100的高度方向相垂直的平面内的投影。
电芯201安装于电池托盘100内时，电芯201位于放置槽111的受压区域112内，延伸部12沿底板本体11的周向边缘延伸设置，进一步地，延伸部12构造为环型结构，具体地，延伸部12构造为闭环型结构。
边框20限定出安装空间21，底板本体11安装于边框20，进一步地，底板本体11固定安装于边框20，底板本体11可以粘接于边框20，底板本体11也可以通过螺栓安装于边框20，底板本体11和边框20的具体装配方式不具体限定，根据实际需要进行选择。底板本体11安装于安装空间21内，延伸部12位于安装空间21外部，在电池托盘100的高度方向，延伸部12位于边框20上方且设于边框20。
在本申请的一些实施例中，如图6和图8所示，边框20包括侧梁、前端梁24和后端梁25，侧梁、前端梁24和后端梁25中的至少一者为上述实施例中的边梁23，边梁23、前端梁24和后端梁25相连以形成安装空间21，侧梁、前端梁24和后端梁25相连包括直接连接和间接连接，例如：以侧梁和前端梁24连接为例进行说明，侧梁和前端梁24可以直接连接，侧梁和前端梁24也可以通过其他梁间接连接。
在一些可选的实施例中，侧梁和/或前端梁24和/或后端梁25具有朝向安装空间21内延伸的支撑部22，也可以理解为，侧梁、前端梁24和后端梁25中的至少一个具有朝向安装空间21内延伸的支撑部22，支撑部22用于支撑托盘底板10。其中，侧梁的数量可以为两个，后端梁25和前端梁24的数量可以均为一个，当边框20以图8中的放置方式放置时，两个侧梁在图8中的左右方向间隔开设置，前端梁24、后端梁25均连接在两个侧梁之间，前端梁24和后端梁25在边框20的前后方向间隔开设置，从而使前端梁24、后端梁25和两个侧梁共同限定出安装空间21。并且，当电芯201沿图8中的左右方向延伸放置时，通过将支撑部22设置于侧梁，能够保证每个电芯201都被支撑部22支撑，可以进一步保证支撑部22对电芯201进行支撑，可以进一步保证边框20主要用于承载电芯201重量，从而使支撑部22设置位置合理。可以理解的，当电池托盘100安装于车辆2000上时，电池托盘100的宽度方向可以与车宽方向一致，电池托盘100的长度方向可以与车长方向一致。当然，电池托盘100的宽度方向也可以与车长方向一致，电池托盘100的长度方向可以与车宽方向一致。
进一步地，支撑部22用于支撑托盘底板10的受压区域112。如图6、图8和图11所示，本申请以电池托盘100沿上下方向放置为例进行说明，底板本体11安装于安装空间21内后，延伸部12设置在安装空间21外部，在电池托盘100的上下方向，延伸部12与边框20对应设置，具体地，如图11所示，延伸部12位于边框20的上方，延伸部12与边框20正对设置，在电池托盘100的上下方向，延伸部12可以遮挡边框20的整个上表面。
其中，如图11所示，当电芯201安装于放置槽111内时，电芯201位于受压区域112内，支撑部22支撑受压区域112，电芯201的重量搭载在边框20上，边框20承载电芯201的大部分重量，托盘底板10不承载电芯201重量或承载电芯201的小部分重量，大大减轻托盘底板10的承重要求，托盘底板10可以使用强度更低、厚度更薄的材料制成。在一些可选的实施例中，托盘底板10设置为非金属件。在一些可选的实施例中，托盘底板10设置为绝缘件，使用轻质的非金属复合材料制成的托盘底板10即可，例如：轻质的非金属复合材料可以由树脂和玻璃纤维制成，树脂可以为环氧树脂或者聚氨脂，但本申请不限于此，轻质的复合材料也可以由其他与树脂和玻璃纤维起到相同作用的复合材料制成，这样设置能够减小托盘底板10重量，有利于电池托盘100、电池包200的轻量化设计，并且，现有托盘底板10由铝材料制成，本申请通过使用非金属复合材料制成托盘底板10，能够降低托盘底板10生产成本，有利于降低电池托盘100、电池包200的生产成本。需要说明的是，由非金属复合材料制成的托盘底板10具有优异的电绝缘性能，当车辆2000发生严重的搁底事故时，电池包200不会出现拉弧等高压风险。
在一些可选的实施例中，托盘底板10构造为一体成型件，托盘底板10采用轻质的非金属复合材料模压成型，在模压过程中托盘底板10因树脂熔融流动固化后形成良好的气密性，同时通过模具件成型可以保证托盘底板10具有良好的平面度及尺寸精度，保证托盘底板10密封功能。边框20可以通过金属拼焊成型，焊接成型后只需保证焊接结构强度及必要的产品平面度，拼焊效率高，提升了电池托盘100生产效率，且托盘底板10负责密封，不需进行焊缝打磨及气密性检测，没有焊接导致的密封失效风险。托盘底板10可以采用复合材料模压成型，托盘底板10生产效率高，模具精度高从而可以获得较高的平面度，降低电芯201的尺寸要求。
另外，现有电池托盘100未在产品结构上对承重和密封两个功能进行区分，在制造电池托盘100时需要同时考虑整体的承重和密封都需要满足要求，导致电池托盘100的制造效 率及良品率低。而在本申请中，对承重和密封两个功能进行区分，边框20主要负责承重，托盘底板10主要承担密封作用，提升了电池托盘100的制造效率及良品率低。
由此，通过托盘底板10和边框20配合，边框20主要承载电芯201重量，托盘底板10只承载电芯201的小部分重量，托盘底板10主要承担密封作用，可以减小托盘底板10厚度，使用轻质的复合材料制成的托盘底板10即可，有利于电池托盘100、电池包200的轻量化设计以及成本降低，并且，托盘底板10和边框20装配在一起后，没有焊接导致电池托盘100密封失效风险，不需进行焊缝打磨及电池托盘100气密性检测，提升了电池托盘100生产效率。
在本申请的一些实施例中，托盘底板10和边框20之间密封连接。边框20设置有螺栓孔28，螺栓孔28为多个，延伸部12设有多个避让通孔122，多个螺栓孔28与多个避让通孔122一一对应设置，边框20内预埋有多个拉铆螺母，多个拉铆螺母与多个螺栓孔28一一对应设置，拉铆螺母穿过避让通孔122、螺栓孔28。电池包200包括盖体40，盖体40和托盘底板10共同限定出用于放置电芯201的放置腔41，且盖体40与边框20连接。进一步地，盖体40盖设于放置槽111的敞开端以限定出放置腔41，延伸部12夹设在盖体40和边框20之间，使用螺栓穿过盖体40、延伸部12的避让通孔122和边框20的螺栓孔28与拉铆螺母连接，从而将盖体40、托盘底板10和边框20装配在一起。通过托盘底板10和边框20之间密封连接，使螺栓与螺栓孔28之间密封，能够提升电池托盘100密封性，可以避免水蒸气从边框20上的螺栓孔28流入放置槽111内，也可以防止造成电池包200短路，从而提升电池包200使用安全性。
在本申请的一些实施例中，如图11所示，托盘底板10和边框20通过密封结构13密封连接，进一步地，密封结构13构造为密封胶，密封结构13也可以构造为橡胶件，但本申请不限于此，密封结构13也可以构造为与密封胶起到相同作用的密封件。密封结构13可以夹设在托盘底板10和边框20之间的整个空间内，密封结构13可以夹设在托盘底板10和边框20之间的部分空间内，密封结构13可以围绕螺栓孔28和避让通孔122设置，进一步地，密封结构13可以伸入螺栓孔28和避让通孔122内，这样设置能够实现托盘底板10和边框20之间密封连接，可以有效避免水蒸气从边框20上的螺栓孔28流入放置腔41内。
在本申请的一些实施例中，如图11所示，延伸部12和边框20之间设有密封结构13，其中，由于避让通孔122设置在延伸部12处，通过将密封结构13设置在延伸部12和边框20之间，能够保证密封结构13密封螺栓孔28和避让通孔122，可以使密封结构13设置位置合理。
在本申请的一些实施例中，如图11所示，当电池托盘100以图11中的放置方式放置时，在电池托盘100的高度方向，支撑部22的正投影与受压区域112的正投影具有重合区域，当电芯201放置在放置槽111内后，如此设置能够保证支撑部22对电芯201进行支撑，可以保证边框20主要用于承载电芯201重量。
在本申请的一些实施例中，放置槽111的底壁113形成有受压区域112，也可以理解为，受压区域112设置在放置槽111的底壁113，如图11所示，当电池托盘100以图11中的放置方式放置时，支撑部22位于底板本体11的下方，支撑部22支撑于底壁113，这样设置能够保证支撑部22支撑在受压区域112下方，可以进一步保证支撑部22对电芯201进行支撑，可以进一步保证边框20主要用于承载电芯201重量，从而使受压区域112设置位置合理。
在本申请的一些实施例中，如图8所示，边框20还包括支撑梁26，支撑梁26连接在两个边梁23之间，或者支撑梁26连接在前端梁24和后端梁25之间，或者支撑梁26连接在前端梁24和边梁23之间，或者支撑梁26连接在后端梁25和边梁23之间，这样设置能够提升边框20的结构强度，从而可以提升电池托盘100的结构强度。
在本申请的一些实施例中，如图5和图6所示，电池托盘100还包括膨胀梁27，膨胀梁27设置在托盘底板10远离边框20一侧，当电池托盘100以如图5和图6中方式放置时， 膨胀梁27设置在托盘底板10的上方，膨胀梁27通过螺栓安装于支撑梁26，电芯201安装于放置槽111内后，电芯201发生膨胀时，膨胀梁27可以对电芯201进行限位，提升电芯201使用安全性。
进一步地，支撑梁26设置为多个，多个支撑梁26沿边梁23的长度方向依次间隔开设置，边梁23的长度方向是指图6中的前后方向，膨胀梁27为多个，多个膨胀梁27沿边梁23的长度方向依次间隔开设置，多个膨胀梁27和多个支撑梁26一一对应设置，一个膨胀梁27通过螺栓安装于一个支撑梁26，从而可以将膨胀梁27稳固地安装于边框20。
在本申请的一些实施例中，如图11所示，支撑部22靠近边梁23的下端设置，也可以理解为，支撑部22靠近边梁23的远离托盘底板10的端部设置，底板本体11安装于安装空间21内后，通过将支撑部22靠近边梁23的远离托盘底板10的端部设置，能够保证支撑部22支撑在底板本体11下方，也能够保证底板本体11可安装于安装空间21内。
在本申请的一些实施例中，如图5-图7、图11所示，当电池托盘100以图11中的放置方式放置时，放置槽111的上端敞开设置，电芯201可以从放置槽111的敞开端放入放置槽111内。并且，延伸部12沿放置槽111的敞开端周向延伸设置，如图11所示，延伸部12与底板本体11的上端连接，底板本体11安装于安装空间21内后，这样设置能够使延伸部12设置在放置槽111外部，可以保证延伸部12在电池托盘100的上下方向与边框20对应设置，从而可以保证电池托盘100的密封。
在本申请的一些实施例中，如图8、图10和图11所示，支撑部22靠近托盘底板10的表面构造为平面，也就是说，如图11所示，支撑部22的上表面设置为平面，如此设置能够保证支撑部22与底板本体11的支撑面积，可以使支撑部22更好地支撑电芯201。
在本申请的一些实施例中，支撑部22位于底板本体11下方且与底板本体11固定连接。在一些可选的实施例中，托盘底板10粘接于边框20。进一步地，通过在托盘底板10和边框20之间打胶黏剂(例如结构胶)使支撑部22和底板本体11粘接连接，利用胶黏剂的厚度控制对边框20的尺寸公差进行吸收，同时托盘底板10具有较好的平面度，利用胶黏剂可以吸收公差的特点降低对托盘底板10及边框20的制造要求。并且，现有的托盘底板10和边框20焊接时，托盘底板10在焊接过程中容易变形，在后续电池包200组装过程中加大了对电芯201的尺寸要求，影响电池包200装配效率。而在本申请中，通过将托盘底板10和边框20粘接连接，避免托盘底板10和边框20焊接连接，可以防止托盘底板10变形，在后续电池包200组装过程中减小了对电芯201的尺寸要求，提升了电池包200装配效率。
在本申请的一些实施例中，托盘底板10构造为一体成型件，托盘底板10采用轻质的复合材料模压成型，在模压过程中托盘底板10因树脂熔融流动固化后形成良好的气密性，同时通过模具件成型可以保证托盘底板10具有良好的平面度及尺寸精度，保证托盘底板10密封功能。
在本申请的一些实施例中，边框20构造为金属件，边框20可以由铝材料制成，边框20也可以由钢材料制成，但本申请不限于此，边框20也可以由其他与钢材料起到相同的金属材料制成，例如，边框20由钢材料制成，边框20可以由钢材料辊压形成，边框20也可以由钢材料挤出形成。其中，通过将边框20设置为金属件，能够提高边框20承重能力，可以降低边框20变形风险。
在本申请的一些实施例中，如图5和图6所示，边框20连接有吊耳结构30，吊耳结构30设置有安装孔，通过紧固件(例如螺栓)将吊耳结构30安装于车辆2000上，实现将电池包200安装于车辆2000的目的。
如图1-图11所示，根据本申请实施例的电池包200包括电芯201、电池托盘100和盖体40。电池托盘100为上述实施例的电池托盘100，电池托盘100具有放置槽111，电芯201放置在放置槽111内，盖体40和托盘底板10共同限定出用于放置电芯201的放置腔41，且盖体40与边框20连接。进一步地，盖体40盖设于放置槽111的敞开端以限定出放置腔41，延伸部12夹设在盖体40和边框20之间，使用螺栓穿过盖体40、延伸部12和边 框20将盖体40、托盘底板10和边框20装配在一起。进一步地，延伸部12和盖体40之间夹设有密封件203(例如密封圈)，密封件203可以将放置腔41密封，盖体40与托盘底板10限定出一个密封的绝缘空腔(即放置腔41)，电芯201放入放置腔41内后，能够将电芯201与边框20完全隔离开，电芯201处在一个完全绝缘的环境中，电池包200无漏电风险。
在本申请的一些实施例中，如图1所示，电池包200还可以包括：压板202，压板202构造为闭环形结构，盖体40、密封件203和延伸部12夹设在压板202和边框20之间，使用螺栓穿过压板202、盖体40、延伸部12和边框20将压板202、盖体40、托盘底板10和边框20装配在一起，压板202可以使整个密封件203受压均匀，保证放置腔41密封可靠。
如图14所示，根据本申请实施例的车辆2000，包括上述实施例的电池包200，电池包200安装于车辆2000为车辆2000提供电能，电池包200的边框20承载电芯201的大部分重量，托盘底板10只承载电芯201的小部分重量，托盘底板10主要承担密封作用，使用轻质的复合材料制成的托盘底板10即可，有利于电池托盘100、电池包200、车辆2000的轻量化设计以及成本降低，并且，托盘底板10和边框20装配在一起后，没有焊接导致电池托盘100密封失效风险，不需进行焊缝打磨及电池托盘100气密性检测，提升了电池托盘100、车辆2000生产效率。同时，由复合材料制成的托盘底板10具有优异的电绝缘性能，当车辆2000发生严重的搁底事故时，电池包200不会出现拉弧等高压风险，提升车辆2000安全性。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (20)

  1. 一种用于电池托盘(100)的边梁(23)，所述电池托盘(100)具有用于放置电芯(201)的放置槽(111)，其特征在于，所述边梁(23)包括：
    边梁本体(231)，所述边梁本体(231)限定出空腔(2311)，所述边梁本体(231)具有分隔部(232)，所述分隔部(232)位于所述空腔(2311)内，所述分隔部(232)连接在所述空腔(2311)的顶壁(233)和底壁(234)之间以将所述空腔(2311)分隔为第一子腔(2351)和第二子腔(2352)，所述第一子腔(2351)和所述第二子腔(2352)在所述边梁(23)的第一方向依次排布，所述第一子腔(2351)的横截面面积为S1，所述第二子腔(2352)的横截面面积为S2，满足关系式：0.8＜S1/S2＜1。
  2. 根据权利要求1所述的用于电池托盘(100)的边梁(23)，其特征在于，在所述边梁(23)的第一方向上，所述第一子腔(2351)位于所述第二子腔(2352)和所述放置槽(111)之间。
  3. 根据权利要求1或2所述的用于电池托盘(100)的边梁(23)，其特征在于，所述分隔部(232)倾斜连接在所述空腔(2311)的顶壁(233)和底壁(234)之间。
  4. 根据权利要求1-3中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，从所述边梁(23)的上端至下端方向，所述分隔部(232)朝向远离所述放置槽(111)倾斜。
  5. 根据权利要求1-4中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，所述第一子腔(2351)的横截面形状和所述第二子腔(2352)的横截面形状均为三角形或梯形。
  6. 根据权利要求1-5中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，所述边梁(23)构造为一体成型件。
  7. 根据权利要求1-6中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，在所述边梁(23)的宽度方向，所述空腔(2311)具有远离所述放置槽(111)设置的第一侧壁(236)，所述第一侧壁(236)连接在所述空腔(2311)的顶壁(233)和底壁(234)之间，且所述第一侧壁(236)与所述分隔部(232)连接。
  8. 根据权利要求7所述的用于电池托盘(100)的边梁(23)，其特征在于，所述第一侧壁(236)的下端连接有朝向所述空腔(2311)内延伸的第一连接部(238)，所述第一连接部(238)位于所述空腔(2311)的底壁(234)朝向所述空腔(2311)的顶壁(233)的一侧，所述第一侧壁(236)通过所述第一连接部(238)与所述空腔(2311)的底壁(234)及所述分隔部(232)连接，且所述第一连接部(238)与所述空腔(2311)的底壁(234)固定连接。
  9. 根据权利要求1-8中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，所述空腔(2311)具有靠近所述放置槽(111)的第二侧壁(237)，所述第二侧壁(237)连接在所述空腔(2311)的顶壁(233)和底壁(234)之间，且所述第二侧壁(237)与所述分隔部(232)连接。
  10. 根据权利要求9所述的用于电池托盘(100)的边梁(23)，其特征在于，所述第二侧壁(237)的上端连接有朝向所述空腔(2311)内延伸的第二连接部(239)，所述第二连接部(239)位于所述空腔(2311)的顶壁(233)朝向所述空腔(2311)的底壁(234)的一侧，所述第二侧壁(237)通过所述第二连接部(239)与所述空腔(2311)的顶壁(233)及所述分隔部(232)连接，且所述第二连接部(239)与所述空腔(2311)的顶壁(233)固定连接。
  11. 根据权利要求9或10所述的用于电池托盘(100)的边梁(23)，其特征在于，所述边梁(23)包括支撑部(22)，所述支撑部(22)设于所述边梁本体(231)的靠近所述放置槽(111)的一侧，所述支撑部(22)用于支撑所述电芯(201)。
  12. 根据权利要求11所述的用于电池托盘(100)的边梁(23)，其特征在于，所述第二侧壁(237)的下端连接有朝向所述放置槽(111)延伸的支撑部(22)，所述第二侧壁(237)通过所述支撑部(22)与所述空腔(2311)的底壁(234)连接。
  13. 根据权利要求9-12中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，所述第二侧壁(237)倾斜连接在所述空腔(2311)的顶壁(233)和底壁(234)之间，且从所述边梁(23)的上端至下端方向，所述第二侧壁(237)朝向靠近所述放置槽(111)倾斜。
  14. 根据权利要求11或12所述的用于电池托盘(100)的边梁(23)，其特征在于，在所述边梁(23)的宽度方向，所述空腔(2311)的底壁(234)具有延伸至所述支撑部(22)下方的结构加强部(2341)，所述结构加强部(2341)与所述支撑部(22)靠近所述放置槽(111)的端部连接。
  15. 根据权利要求14所述的用于电池托盘(100)的边梁(23)，其特征在于，所述结构加强部(2341)设有朝向所述支撑部(22)凸出的凸台，所述凸台与所述支撑部(22)连接。
  16. 根据权利要求1-6中任一项所述的用于电池托盘(100)的边梁(23)，其特征在于，在所述边梁(23)的宽度方向，所述空腔(2311)具有远离所述放置槽(111)设置的第一侧壁(236)，所述第一侧壁(236)连接在所述空腔(2311)的顶壁(233)和底壁(234)之间；
    所述空腔(2311)具有靠近所述放置槽(111)的第二侧壁(237)，所述第二侧壁(237)连接在所述空腔(2311)的顶壁(233)和底壁(234)之间，所述空腔(2311)的顶壁(233)、所述空腔(2311)的底壁(234)、所述第一侧壁(236)和所述第二侧壁(237)共同限定出所述空腔(2311)，且所述空腔(2311)的底壁(234)朝向所述放置槽(111)延伸以形成用于支撑所述电芯(201)的支撑部(22)。
  17. 一种电池托盘(100)，其特征在于，包括根据权利要求1-16中任一项所述的用于电池托盘(100)的边梁(23)。
  18. 根据权利要求17所述的电池托盘(100)，其特征在于，包括：
    托盘底板(10)，所述托盘底板(10)包括底板本体(11)和延伸部(12)，所述底板本体(11)限定出用于放置电芯(201)的放置槽(111)，所述延伸部(12)沿所述底板本体(11)的周向边缘延伸；
    边框(20)，所述边框(20)包括侧梁、前端梁(24)和后端梁(25)，所述侧梁、所述前端梁(24)和所述后端梁(25)中的至少一者为所述边梁(23)，所述侧梁、所述前端梁(24)和所述后端梁(25)相连以形成安装空间(21)，所述底板本体(11)安装于所述安装空间(21)中，在所述电池托盘(100)的高度方向，所述延伸部(12)位于所述边框(20)上方且设于所述边框(20)，所述侧梁、所述前端梁(24)和所述后端梁(25)中的至少一个具有朝向所述安装空间(21)内延伸的支撑部(22)，所述支撑部(22)用于支撑所述托盘底板(10)。
  19. 一种电池包(200)，其特征在于，包括电芯(201)和根据权利要求17或18所述的电池托盘(100)，所述电池托盘(100)具有放置槽(111)，所述电芯(201)放置在所述放置槽(111)内。
  20. 一种车辆(2000)，其特征在于，包括根据权利要求19所述的电池包(200)。
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