Tray structure and battery pack

Abstract

The utility model discloses a tray structure and a battery pack, the tray structure comprises a cold plate, a cooling channel is formed in the cold plate, and mounting parts are formed on the two sides of the cold plate in the width direction; the edge beam is connected with the cold plate and is positioned at the position of the mounting part; the end plates are arranged at the two ends of the edge beam and connected with the cold plate and the edge beam. According to the tray structure, the boundary beams are connected with the mounting parts of the cold plate, so that the design of the tray structure is simplified, the number of parts of the tray structure is reduced, the universality and the production efficiency of the tray structure are improved, the production cost of the tray structure is reduced, and the space volume of the tray structure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a tray structure and a battery pack. Background Art

[0002] It is pointed out in the related art that the energy storage battery cluster is usually composed of multiple battery packs, and the battery packs PACK have a shell and other structures, and their structures are all waterproof and sealed; the volumetric cell utilization rate (Volumetric Cell To System, VCTS) has been downgraded twice, and the volumetric cell utilization rate has decreased. Generally, the volumetric cell utilization rate is less than 28%, resulting in low energy density, and the battery pack structure design is also complex, the installation process is cumbersome, and the cost of structural parts and labor is also high. In particular, the blade cells with higher height are used for energy storage. In order to meet the thermal management requirements for the temperature difference between the upper and lower parts of the cells, cooling of the upper and lower parts is usually required, which is more expensive. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a tray structure, which has an ingenious design and low production cost.

[0004] The utility model also provides a battery pack having the above tray structure.

[0005] According to the first aspect of the present invention, the tray structure includes: a cold plate, in which a cooling channel is formed, and mounting portions are formed on both sides of the cold plate in the width direction; a side beam, which is connected to the cold plate and located at the position of the mounting portion; and an end plate, which is arranged at both ends of the side beam and is connected to the cold plate and the side beam.

[0006] According to the pallet structure of the utility model, the side beams are connected to the mounting portion of the cold plate, which simplifies the design of the pallet structure, reduces the number of parts of the pallet structure, improves the versatility and production efficiency of the pallet structure, reduces the production cost of the pallet structure, and reduces the spatial volume of the pallet structure.

[0007] In some embodiments, a blocking piece is provided between the end plate and the cold plate, and avoidance grooves are formed at both ends of the cold plate in the length direction, and the blocking piece is arranged in the avoidance grooves.

[0008] In some embodiments, the blocking member at at least one end is formed with a liquid inlet and a liquid outlet connected to the cooling channel, a liquid inlet pipe is provided at the position of the liquid inlet, and a liquid outlet pipe is provided at the position of the liquid outlet.

[0009] In some embodiments, in the height direction of the side beam, the distance between the bottom surface of the side beam and the bottom surface of the end plate is not less than 10 mm.

[0010] In some embodiments, a connection hole is formed on the bottom surface of the mounting portion of the cold plate, and the cold plate and the side beam are connected by fasteners penetrating the connection hole.

[0011] In some embodiments, a ratio between a depth of the connection hole and a thickness of the cold plate is not less than 0.5.

[0012] In some embodiments, the pallet structure further includes: a support member, wherein the support member is disposed in the middle of the side beam and is vertically disposed with respect to the side beam.

[0013] In some embodiments, a positioning piece is provided at one of the top and bottom ends of the end plate, a positioning hole is formed at one of the top and bottom ends of the end plate, and the stacked tray structures are positioned by the positioning piece cooperating with the positioning hole.

[0014] In some embodiments, the cold plate is an aluminum extrusion, and / or the side beams and the end plates are both steel parts.

[0015] A battery pack according to a second aspect of the present invention comprises a tray structure according to the first aspect of the present invention.

[0016] According to the battery pack of the present invention, by providing the tray structure of the first aspect, the structure of the battery pack is simplified, the production efficiency of the battery pack is improved, the production cost and thermal management cost of the battery pack are reduced, and the spatial volume of the battery pack is reduced.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a tray structure according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of an exploded view of the pallet structure shown in ;

[0020] Figure 3 yes Figure 1 A bottom view schematic diagram of the tray structure shown in ;

[0021] Figure 4 yes Figure 1 A schematic cross-sectional view of the tray structure shown in ;

[0022] Figure 5 yes Figure 1 A schematic side view of the tray structure shown in ;

[0023] Figure 6 yes Figure 1 A rear view schematic diagram of the tray structure shown in ;

[0024] Figure 7 yes Figure 1 A front view schematic diagram of the tray structure shown in ;

[0025] Figure 8 yes Figure 1 An internal schematic diagram of the tray structure shown in;

[0026] Fig. 9 yes Figure 1 Schematic diagram of the cold plate shown in;

[0027] Fig.10 yes Fig. 9 A side view of the cold plate shown in;

[0028] Fig.11 yes Figure 1 The assembly diagram of the tray structure shown in ;

[0029] Fig.12 yes Fig.11 A schematic diagram of the support member shown in ;

[0030] Fig.13 yes Fig.11 Schematic diagram of the stacking structure of the tray for vegetarian dishes.

[0031] Reference numerals:

[0032] 100. Pallet structure;

[0033] 1. cold plate; 11. mounting portion; 111. connecting hole; 12. cooling channel; 13. avoidance groove;

[0034] 2. Side beam;

[0035] 3. end plate; 31. avoidance portion; 32. positioning hole;

[0036] 4. Blocking parts;

[0037] 5. Liquid inlet pipe; 6. Liquid outlet pipe;

[0038] 7. Supporting parts; 8. Positioning parts. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] Reference below Figure 1-Figure 13 A tray structure 100 according to an embodiment of the first aspect of the present invention is described.

[0041] like Figure 1 As shown, the pallet structure 100 according to the embodiment of the first aspect of the utility model includes: a cold plate 1, a side beam 2 and an end plate 3.

[0042] Specifically, a cooling channel 12 is formed in the cold plate 1, mounting portions 11 are formed on both sides of the cold plate 1 in the width direction, the side beam 2 is connected to the cold plate 1 and is located at the mounting portion 11, and the end plate 3 is disposed at both ends of the side beam 2 and is connected to the cold plate 1 and the side beam 2. Thus, the overall structure of the tray structure 100 is simplified, and the assembly difficulty of the tray structure 100 is reduced.

[0043] According to the pallet structure 100 of the embodiment of the utility model, the side beam 2 is connected to the mounting portion 11 of the cold plate 1, which simplifies the design of the pallet structure 100, reduces the number of parts of the pallet structure 100, improves the versatility and production efficiency of the pallet structure 100, reduces the production cost of the pallet structure 100, and reduces the spatial volume of the pallet structure 100.

[0044] In some embodiments of the present invention, Figure 1 As shown, a blocking member 4 is provided between the end plate 3 and the cold plate 1, and avoidance grooves 13 are formed at both ends of the cold plate 1 in the length direction, and the blocking member 4 is arranged in the avoidance grooves 13. Therefore, the connection between the end plate 3 and the cold plate 1 is simple, and the formation of the avoidance grooves 13 shortens the overall length of the tray structure 100, reduces the spatial volume of the tray structure 100, and improves the space utilization rate.

[0045] In some embodiments of the utility model, the plugging member 4 at least at one end is formed with a liquid inlet and a liquid outlet communicating with the cooling channel 12, and a liquid inlet pipe 5 is provided at the position of the liquid inlet, and a liquid outlet pipe 6 is provided at the position of the liquid outlet. In other words, the plugging member 4 provided at the front end is formed with a liquid inlet and a liquid outlet communicating with the cooling channel 12. Thus, the connection structure between the plugging member 4 and the cold plate 1 and the end plate 3 is simplified, the production difficulty is reduced, and the production efficiency is improved.

[0046] In some embodiments of the present invention, in the height direction of the side beam 2, the distance between the bottom surface of the side beam 2 and the bottom surface of the end plate 3 is not less than 10 mm. For example, the distance between the bottom surface of the side beam 2 and the bottom surface of the end plate 3 can be 10 mm, 10.1 mm, 10.2 mm, 10.3 mm, 10.4 mm, 10.5 mm, etc.

[0047] In some embodiments of the present invention, Figure 3As shown, a connection hole 111 is formed on the bottom surface of the mounting portion 11 of the cold plate 1, and the cold plate 1 is connected to the side beam 2 by fasteners penetrating the connection hole 111. Thus, the connection between the cold plate 1 and the side beam 2 is simple, ensuring that the fasteners do not protrude from the bottom surface of the cold plate 1, and reducing the height dimension of the battery pack.

[0048] In other embodiments, the cold plate 1 and the side beam 2 can be locked by FDS process.

[0049] Furthermore, if Figure 2 As shown, the end plate 3 disposed at the front end is formed with an escape portion 31, which is used to escape the liquid inlet pipe 5 and the liquid outlet pipe 6, ensuring that the fasteners do not protrude from the bottom surface of the cold plate 1, thereby reducing the height dimension of the battery pack.

[0050] In some embodiments of the present invention, the ratio between the depth of the connection hole 111 and the thickness of the cold plate 1 is not less than 0.5, thereby ensuring the connection stability between the connection hole 111 and the fastener, with a simple structure and ingenious design.

[0051] In some embodiments of the present invention, Fig.11 As shown, the pallet structure 100 further includes: a support member 7, which is disposed in the middle of the side beam 2 and is disposed perpendicular to the side beam 2. When the pallet structures 100 are stacked, the support member 7 provides support force for the side beam 2 of the upper pallet structure 100, preventing the side beam 2 from bending downward at the maximum force position in the middle of the side beam 2, thereby ensuring the overall stability of the pallet structure 100.

[0052] In some embodiments of the present invention, Figure 1 As shown, a positioning member 8 is provided at one of the top and bottom ends of the end plate 3, and a positioning hole 32 is formed at one of the top and bottom ends of the end plate 3. The stacked tray structures 100 are positioned by the positioning member 8 and the positioning hole 32. That is, the upper tray structure 100 and the lower tray structure 100 are constrained in the length direction by the positioning member 8 and the positioning hole 32, so as to prevent the battery cell module in the lower frame from expanding and avoid the situation where the front and rear end plates 3 are turned outward and deformed.

[0053] Preferably, the positioning member 8 is a positioning pin.

[0054] Furthermore, if Fig.13As shown, multiple tray structures 100 are stacked, which realizes the sharing of the cold plate 1 and double-sided cooling, and reduces the cooling cost. At the same time, the lower tray structure 100 provides support and positioning for the upper tray structure 100, and the upper tray structure 100 provides anti-expansion constraint for the lower tray structure 100. The functions are complementary and reused, which simplifies the structural design and installation process difficulty, improves production efficiency, reduces manufacturing costs, and reduces the height occupancy. The side beam 2 and the end plate 3 and the battery cell module only need to reserve the gap required for safety. The surrounding space is extremely small, and the space utilization rate of the entire structural design is extremely high.

[0055] Preferably, the cold plate 1 is an aluminum extrusion part, and / or the side beam 2 and the end plate 3 are both steel parts. In addition, the side beam 2 and the end plate 3 are welded together.

[0056] The battery pack according to the embodiment of the second aspect of the utility model includes the tray structure 100 according to the embodiment of the first aspect of the utility model.

[0057] According to the battery pack of the embodiment of the utility model, by setting the tray structure 100 of the first embodiment, the structure of the battery pack is simplified, the production efficiency of the battery pack is improved, the production cost and thermal management cost of the battery pack are reduced, and the spatial volume of the battery pack is reduced.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tray structure, characterized in that: include: A cold plate, wherein a cooling channel is formed in the cold plate, and mounting portions are formed on both sides of the cold plate in a width direction; A side beam connected to the cold plate and located at the mounting portion; End plates are arranged at both ends of the side beams and connected to the cold plate and the side beams.

2. The tray structure according to claim 1, characterized in that: A blocking piece is provided between the end plate and the cold plate, and avoidance grooves are formed at both ends of the cold plate in the length direction, and the blocking piece is arranged in the avoidance grooves.

3. The tray structure according to claim 2, characterized in that: The blocking member at at least one end is formed with a liquid inlet and a liquid outlet communicated with the cooling flow channel, a liquid inlet pipe is provided at the position of the liquid inlet, and a liquid outlet pipe is provided at the position of the liquid outlet.

4. The tray structure according to claim 1, characterized in that: In the height direction of the side beam, the distance between the bottom surface of the side beam and the bottom surface of the end plate is not less than 10 mm.

5. The tray structure according to claim 1, characterized in that: A connecting hole is formed on the bottom surface of the mounting portion of the cold plate, and the cold plate and the side beam are connected by fasteners penetrating through the connecting hole.

6. The tray structure according to claim 5, characterized in that: The ratio between the depth of the connection hole and the thickness of the cold plate is not less than 0.

5.

7. The tray structure according to any one of claims 1 to 6, characterized in that: Also includes: A support member is arranged at a middle position of the side beam and is vertically arranged with respect to the side beam.

8. The tray structure according to any one of claims 1 to 6, characterized in that: A positioning piece is provided at one of the top and bottom ends of the end plate, and a positioning hole is formed at one of the top and bottom ends of the end plate. The stacked tray structures are positioned by the positioning piece cooperating with the positioning hole.

9. The tray structure according to any one of claims 1 to 6, characterized in that: The cold plate is an aluminum extrusion part, and / or the side beam and the end plate are both steel parts.

10. A battery pack, characterized in that: The pallet structure comprises the pallet structure described in any one of claims 1 to 9.

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