CN217788619U - Tray assembly, battery pack and vehicle - Google Patents

Abstract

The utility model discloses a tray subassembly, battery package and vehicle, tray subassembly includes: the battery cell accommodating device comprises a tray, a battery cell accommodating cavity and a battery cell accommodating cavity, wherein the tray is provided with the battery cell accommodating cavity; the protection plate is arranged at the bottom of the tray; a buffer layer disposed between the tray and the guard plate; wherein at least a portion of the tray is configured as an insulator. According to the utility model discloses a tray assembly is provided with guard plate and buffer layer bottom the tray, and tray assembly's anti bottom impact ability is strong, and the tray structure is the insulating part, has good high-pressure protective capability, and lightweight more.

Description

Tray assembly, battery pack and vehicle

technical field

The utility model relates to the field of battery packs, in particular to a tray assembly, a battery pack and a vehicle.

Background technique

In the related technology, the battery tray adopts a metal structure, and when the metal structure increases the strength, the strength of the tray can only be enhanced by increasing the thickness of the structure, but while improving the strength of the tray, the weight of the tray is increased, which cannot achieve light weight , and the metal tray needs to be insulated before it can realize the high-voltage protection function of the internal battery core, and the process is complicated and costly.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. For this reason, an object of the utility model is to propose a pallet assembly, which is provided with a protective plate and a buffer layer at the bottom of the pallet. capacity and is lighter.

The utility model also proposes a battery pack with the above-mentioned tray assembly.

The utility model also proposes a vehicle with the above-mentioned battery pack.

The tray assembly according to the present utility model includes: a tray, the tray is formed with a cell accommodating cavity; a protective plate, the protective plate is arranged at the bottom of the tray; a buffer layer, the buffer layer is arranged between the tray and the Between the fenders; wherein at least part of the tray is configured as insulation.

According to the tray assembly of the utility model, the tray assembly can have a good bottom impact resistance by setting the tray, the protective plate, the buffer layer and the insulator, and the buffer layer can effectively buffer the impact force and reduce the impact on the inside of the cell accommodating cavity. s damage. At the same time, the tray is constructed as an insulator, and the insulator has the function of high-voltage insulation protection for the battery cells in the tray, which further improves the safety performance of the battery pack. In addition, the tray has strong impact resistance and light weight, which further improves the tray assembly. The protection ability of the battery cell and the energy density of the battery pack are improved.

According to an embodiment of the present utility model, the insulating member is configured as a carbon fiber member or a glass fiber member.

According to an embodiment of the present invention, the top surface area of the protective plate is greater than or equal to the bottom area of the tray, the buffer layer is arranged on the top surface of the protective plate, and the top surface area of the protective plate is S1, the coverage area of the buffer layer on the protective plate is S2, and satisfies: 85%≤S1/S2≤98%.

According to an embodiment of the present invention, the buffer layer is directly opposite to the cell containing cavity, and the covering area of the buffer layer on the bottom surface of the tray is greater than or equal to the bottom surface area of the cell containing cavity.

According to an embodiment of the present utility model, the buffer layer is configured as a rigid foam.

According to an embodiment of the present invention, the thickness of the buffer layer is D1, and satisfies 6mm≤D1≤12mm.

According to an embodiment of the present utility model, the buffer layer is configured as a PU piece, a PPO piece, a PET piece or an MPP piece.

According to an embodiment of the present invention, the tray includes: a tray body, the tray body is formed with the cell accommodating cavity; an outer frame part, the outer frame part is configured as a metal piece and surrounds the tray body At least part of the outer periphery of the tray body is connected to the outer periphery of the tray body; wherein the tray body is configured as an insulating member.

According to an embodiment of the present invention, the tray body includes multiple plies laid sequentially in the thickness direction, and the fiber extension directions of two adjacent plies are arranged orthogonally.

According to an embodiment of the present invention, the number of layers of the layup is n and satisfies 10≤n≤18.

According to an embodiment of the present utility model, the protective plate is fixedly connected to the outer frame part, and the thickness of the protective plate is D2 and satisfies 0.5mm≤D2≤2mm.

The following briefly describes the battery pack according to the present invention.

The battery pack according to the present invention is provided with the tray assembly described in any one of the above embodiments. Since the battery pack according to the present invention is provided with the tray assembly described in any one of the above embodiments, the battery pack’s Strong protection ability, good safety, can effectively protect against physical impact from the bottom, the battery pack has good high-voltage insulation protection capability, and the energy density of the battery pack is high.

The vehicle according to the present invention will be briefly described below.

The vehicle according to the present utility model is provided with the battery pack described in any one of the above embodiments. Since the vehicle according to the present invention is provided with the battery pack described in any one of the above embodiments, the battery of the vehicle The service life of the bag is long, the mileage of the vehicle is long, it has excellent bottom impact resistance, and the safety performance of the vehicle is good.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic structural view of a tray assembly according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of a tray according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of cooperation between the tray body and the outer frame according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of the laying direction of the inner laying layer of the tray body according to the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.

Reference signs:

tray assembly 1;

tray 11, tray body 111, outer frame portion 112,

Protective plate 12, buffer layer 13,

layup 101,

Battery pack 2, cell 3.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

The tray assembly according to the embodiment of the present invention will be described below with reference to FIGS. 1-5 .

The tray assembly 1 according to the present utility model includes a tray 11, a protective plate 12 and a buffer layer 13. A cell accommodation cavity is formed in the tray 11. The tray 11 can be used to accommodate a module battery or a single cell 3. The protective plate 12 is provided The bottom of the tray 11 is used to improve the strength of the bottom of the tray assembly 1. The foreign matter at the bottom of the vehicle may hit the tray 11 during driving, and the protective plate 12 can improve the strength of the bottom of the tray assembly 1 to avoid electric shocks in the tray 11. The core 3 is affected to improve the structural strength of the bottom of the tray assembly 1 , thereby improving the protection capability of the tray assembly 1 for the battery core 3 . A cushioning layer 13 is arranged between the protective plate 12 and the tray 11, and the cushioning layer 13 can be configured as a foam material for absorbing impact. After the tray assembly 1 is impacted by the bottom, during the high-speed running of the vehicle, foreign matter will The impact force of the tray assembly 1 is relatively large, and the buffer layer 13 can effectively buffer the impact force of foreign objects and absorb energy through deformation to reduce the damage caused by foreign objects to the battery cell 3 in the battery cell accommodating chamber.

According to an embodiment of the present invention, the tray 11 according to the present invention is configured as an insulating member, and the tray 11 is configured as an insulating member so that the tray assembly 1 has a high-voltage insulation protection effect on the electric core 3 in the electric core receiving chamber. In addition In this application, the tray 11 is constructed as an insulator, and the insulator can be made of carbon fiber composite material or glass fiber composite material, and both carbon fiber composite material and glass fiber composite material have a multi-layer layer 101 structure, which can effectively consume Dissipate the impact energy from the outside, further improving the impact resistance of the tray assembly 1. In addition, the tray 11 made of carbon fiber composite material or glass fiber composite material has a low density and is lighter than the existing tray 11 , which can increase the energy density of the battery pack 2 . Furthermore, the composite material itself has strong acid resistance and alkali resistance, and good high temperature aging performance. At the same time, it has a low thermal conductivity, and has the effect of heat preservation and heat insulation on the bottom of the battery pack 2 .

According to the tray assembly 1 of the present utility model, the tray assembly 1 can be provided with good bottom impact resistance by setting the tray 11, the protective plate 12, the buffer layer 13 and the insulator, and the buffer layer 13 can effectively buffer the impact force and reduce the Damage to the inside of the cell housing. At the same time, the tray 11 is constructed as an insulator, and the insulator has the function of insulating and protecting the battery cells 3 in the tray 11, which further improves the safety performance of the battery pack 2. In addition, the tray 11 has strong impact resistance and light weight, which further improves the safety performance of the battery pack 2. The protection ability of the tray assembly 1 for the battery cells 3 is improved, and the energy density of the battery pack 2 is improved.

According to an embodiment of the present invention, the top surface area of the protective plate 12 is greater than or equal to the bottom area of the tray 11, the buffer layer 13 is arranged on the top surface of the protective plate 12, the top surface area of the protective plate 12 is S1, and the buffer layer 13 The coverage area on the protective plate 12 is S2, and satisfies: 85%≤S1/S2≤98%.

By arranging the top surface area of the protective plate 12 to be greater than the bottom surface area of the tray 11, the protective plate 12 can be used to protect the bottom surface of the tray 11 in all directions and improve the protective effect of the bottom of the tray assembly 1. The buffer layer 13 is arranged on the top of the protective plate 12. On the other hand, the ratio between the top surface area of the protective plate 12 and the coverage area of the buffer layer 13 is set in the range of 85%≤S1/S2≤98%, so that the buffer layer 13 can fully cover the protective plate 12, and can achieve shock absorption At the same time, the buffer layer 13 can also play a role of heat preservation for the cell accommodating cavity in the tray 11 .

According to an embodiment of the present utility model, the buffer layer 13 is directly opposite to the cell housing cavity and the coverage area of the buffer layer 13 on the bottom surface of the tray 11 is greater than or equal to the bottom surface area of the cell housing cavity. By setting the coverage area of the buffer layer 13 larger than Or equal to the bottom surface area of the cell accommodating cavity, the cell 3 is accommodated in the cell accommodating cavity, and by setting the coverage area of the buffer layer 13 to be greater than or equal to the bottom surface area of the cell accommodating cavity, the buffer layer 13 can effectively protect the cell The bottom of the containing cavity is protected to buffer the impact force of foreign objects hitting the bottom wall of the cell containing cavity. At the same time, the thermal insulation effect of the battery cells 3 in the battery cell accommodating cavity can be improved.

According to an embodiment of the present utility model, the cushioning layer 13 is constructed as a rigid foaming part, and the buffering layer 13 is constructed as a rigid foaming part, which can improve the cushioning capacity of the cushioning layer 13 on the one hand, and the cost of the rigid foaming part Low, stable chemical properties, good flame retardant effect, can increase the spreading speed of battery pack 2 combustion after the vehicle is impacted.

According to an embodiment of the present invention, the thickness of the buffer layer 13 is D1, and satisfies 6mm≤D1≤12mm. The thickness of the buffer layer 13 is set within the above range, so that the buffer layer 13 can effectively buffer and absorb energy against mechanical shocks, and at the same time, the thickness of the battery pack 2 will not be excessively reduced, and the buffer layer 13 is guaranteed within the above range. For the cushioning effect of the tray 11 , it is ensured that the overall size of the battery pack 2 will not be too thick, and the remaining space in the battery pack 2 is fully utilized.

According to an embodiment of the present invention, the PU part, PPO part, PET part or MPP part adopts the above-mentioned type of hard foaming material, so that the Shore hardness of the surface of the buffer layer 13 can be in the range of 60-100°. The hardness and compressive strength of the foamed material are determined by the relative density of the material, and the foaming ratio design of the material is recommended to be 5, 10, and 15 times. The bottom protection of the tray 11 can be achieved, and the space compression of the protective plate 12 after plastic deformation can be effectively buffered. The buffer layer 13 can be installed and attached to the groove structure corresponding to the protective plate 12, covering the entire battery pack 2. The effective area of the cell 3 is the cell accommodation cavity, which realizes the overall protection of the cell 3 inside the battery pack 2 .

According to an embodiment of the present utility model, the tray 11 includes a tray body 111 and an outer frame portion 112, the tray body 111 is formed with a cell accommodating cavity, and the tray body 111 is configured as an insulating member, and the tray body 111 can be made of carbon fiber composite material or glass Composed of fiber composite materials; the outer frame portion 112 is constructed as a metal piece and surrounds at least part of the outer periphery of the tray body 111 and is connected with the outer periphery of the tray body 111. The outer frame portion 112 surrounds the outer periphery of the tray body 111 and can help to improve the tray body. For the structural strength of the outer periphery of the body 111 , the outer frame portion 112 can be adhesively connected to the tray body 111 , and the outer frame portion 112 can be provided with mounting points for the protective plate 12 .

According to an embodiment of the present utility model, the tray body 111 includes multiple layers of layers 101 laid in sequence in the thickness direction, the extension direction of fibers in each layer of layers 101 is the same, and the fiber extension direction of two adjacent layers 101 The included angle is α, and the α satisfies: 0°<α<180°. The fiber extension directions of the two plies 101 are arranged orthogonally, so that the structural strength of the tray body 111 can be consistent in the length direction and the width direction.

In addition, the laminated layers 101 of the tray 11 can be configured as even-numbered layers, and by setting the number of laminated layers 101 of the tray 11 as an even-numbered layer, the balance consistency of the battery tray 11 in the length direction and the width direction can be further improved.

According to an embodiment of the present invention, the number of layers 101 is n and satisfies 10≤n≤18, setting the number of layers 101 within the above range can make the tray body 111 have better structural strength and can The thermal insulation capability of the tray body 111 and the buffering effect on the cell accommodating cavity are improved.

According to an embodiment of the present invention, the protective plate 12 is fixedly connected to the outer frame portion 112, and the thickness of the protective plate 12 is D2 and satisfies 0.5mm≤D2≤2mm. The protective plate 12 can be constructed as a high-strength steel protective plate 12, and the protective plate 12 can be made of DP780 high-strength steel plate. By setting the thickness of the protective plate 12 within the above range, the impact resistance of the protective plate 12 can be improved. The outer frame portion 112 may be provided with mounting holes suitable for fasteners to pass through, and the fasteners pass through the protective plate 12 and cooperate with the mounting holes to fix the protective plate 12 on the outer frame portion 112 .

The following briefly describes the battery pack 2 according to the present invention.

The battery pack 2 according to the present invention is provided with the tray assembly 1 described in any one of the above embodiments, since the battery pack 2 according to the present invention is provided with the tray assembly 1 described in any one of the above embodiments, therefore The battery pack 2 has strong protection capability and good safety, and can effectively protect against physical impact from the bottom. The battery pack 2 has good high-voltage insulation protection capability, and the battery pack 2 has high energy density.

The vehicle according to the present invention will be briefly described below.

The vehicle according to the present utility model is provided with the battery pack 2 described in any one of the above-mentioned embodiments. Since the vehicle according to the present utility model is provided with the battery pack 2 described in any one of the above-mentioned embodiments, the vehicle The battery pack 2 has a long service life, the vehicle has a long cruising range, has excellent bottom impact resistance, and the vehicle has good safety performance.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

In the description of the present utility model, "plurality" means two or more.

In the description of the present utility model, "above" or "under" a first feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but through Additional characteristic contacts between them.

In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is high in level on the second feature.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (13)

1. A tray assembly (1), characterized in that, comprising: a tray (11), the tray (11) is formed with a cell accommodating cavity; A protective plate (12), the protective plate (12) is arranged at the bottom of the tray (11); A buffer layer (13), the buffer layer (13) is arranged between the tray (11) and the protective plate (12); wherein At least part of the tray (11) is configured as an insulation. 2. The pallet assembly (1) according to claim 1, characterized in that, the insulating member is configured as a carbon fiber member or a glass fiber member. 3. The tray assembly (1) according to claim 1, characterized in that, the top surface area of the protective plate (12) is greater than or equal to the bottom area of the tray (11), and the buffer layer (13) It is arranged on the top surface of the protective plate (12), the top surface area of the protective plate (12) is S1, the coverage area of the buffer layer (13) on the protective plate (12) is S2, and Satisfy: 85%≤S1/S2≤98%. 4. The tray assembly (1) according to claim 3, characterized in that, the buffer layer (13) is directly opposite to the cell accommodating cavity and the buffer layer (13) is on the bottom surface of the tray (11) The covering area is greater than or equal to the area of the bottom surface of the cell accommodating cavity. 5. The tray assembly (1) according to Claim 1, characterized in that, the cushioning layer (13) is configured as a rigid foam. 6. The pallet assembly (1) according to Claim 1, characterized in that, the thickness of the buffer layer (13) is D1, and satisfies 6mm≤D1≤12mm. 7. The tray assembly (1) according to Claim 1, characterized in that, the buffer layer (13) is configured as a PU piece, a PPO piece, a PET piece or an MPP piece. 8. The tray assembly (1) according to claim 1, characterized in that, the tray (11) comprises: a tray body (111), the tray body (111) is formed with the cell accommodating cavity; The outer frame part (112), the outer frame part (112) is configured as a metal piece and surrounds at least part of the outer periphery of the tray body (111) and is connected to the outer periphery of the tray body (111); wherein The tray body (111) is configured as an insulator. 9. The pallet assembly (1) according to claim 8, characterized in that, the pallet body (111) comprises multiple layers (101) laid sequentially in the thickness direction, two adjacent layers of the layers (101) is arranged orthogonally to the fiber extending direction. 10. The pallet assembly (1) according to Claim 9, characterized in that, the number of layers of the layup (101) is n and satisfies 10≤n≤18. 11. The tray assembly (1) according to claim 8, characterized in that, the protective plate (12) is fixedly connected to the outer frame portion (112), the thickness of the protective plate (12) is D2 and Satisfy 0.5mm≤D2≤2mm. 12. A battery pack (2), characterized in that it comprises the tray assembly (1) according to any one of claims 1-11. 13. A vehicle, characterized by comprising the battery pack (2) according to claim 12.

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