Battery system tray, battery device and vehicle

Abstract

In order to solve the problems that full welding cannot be realized and the air tightness of the tray is difficult to guarantee due to the adoption of double joints in the conventional cooling system, the utility model provides a battery system tray which comprises a frame assembly, a cold plate assembly and a connecting panel, the frame assembly is connected to the periphery of the cold plate assembly and extends along the direction perpendicular to the plane on which the cold plate assembly is positioned, and the connecting panel is connected with the cold plate assembly and extends along the direction perpendicular to the plane on which the cold plate assembly is positioned. A first connector is arranged on the cold plate assembly, the first end of the first connector is connected with the plane where the cold plate assembly is located, the second end of the first connector extends towards the frame assembly, a first receding hole position is formed in the position, corresponding to the second end of the first connector, of the frame assembly, and the connecting panel is installed at the first receding hole position. The first connector penetrates through the first receding hole position and is installed on the connecting panel. According to the utility model, the connecting panel is additionally arranged, so that the assembly of the whole bag is realized on the premise of not changing the original technological process, and the air tightness of the whole bag is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery system tray, a battery device and a vehicle. Background Art

[0002] In recent years, power batteries have been widely used in fields such as electric vehicles, electric bicycles, and electric trains due to their advantages of high energy density, good cycle stability, and long service life.

[0003] A battery device includes a battery pack and a battery management system for monitoring the battery state. During operation, since the batteries in the battery pack generate heat, in order to avoid overheating effects, cooling devices are provided in the battery devices in the related art to cool the batteries.

[0004] Most of the trays in the prior art are composed of extruded aluminum parts welded together, and their cooling systems adopt a single-joint form. The assembly process flow is to first weld the four surrounding frames and then perform a hermeticity test to ensure that the welds at the joints of the frames are qualified. Then, the cold plate and the bottom of the tray frame are connected by friction stir welding, and a hermeticity test is performed again to ensure that the friction stir welds are qualified.

[0005] It should be noted that the single-joint cold plate can be installed at the bottom of the tray frame by tilting at an angle without interference. However, after the cooling system adopts a double-joint, if the original process is used for assembly, the cold plate cannot be installed at the bottom of the tray frame. Therefore, the process flow needs to be adjusted to assemble the cold plate and the frame first and then weld them together. At this time, since the overlapping parts between the original tray frames are shielded by the cold plate at the bottom, full welding cannot be achieved, and it is difficult to ensure the hermeticity of the tray; therefore, how to overcome the above existing technical problems and defects has become a key problem to be solved. Summary of the Utility Model

[0006] Aiming at the problem that full welding cannot be achieved with the double-joint of the existing cooling system and it is difficult to ensure the hermeticity of the tray, the utility model provides a battery system tray, a battery device and a vehicle.

[0007] The technical solutions adopted by the utility model to solve the above technical problems are as follows:

[0008] On the one hand, the present utility model provides a battery system tray, which includes a frame assembly, a cold plate assembly and a connection panel. The frame assembly is connected to the outer periphery of the cold plate assembly and extends in a direction perpendicular to the plane where the cold plate assembly is located. A first connector is provided on the cold plate assembly. The first end of the first connector is connected to the plane where the cold plate assembly is located, and the second end of the first connector extends towards the frame assembly. A first avoidance hole position is provided on the frame assembly corresponding to the second end of the first connector. The connection panel is installed at the first avoidance hole position. The first connector passes through the first avoidance hole position and is installed on the connection panel.

[0009] Optionally, a plurality of medium ports are provided on the first connector.

[0010] Optionally, a second avoidance hole position is provided on the connection panel corresponding to the first avoidance hole position. The second end of the first connector sequentially passes through the first avoidance hole position and the second avoidance hole position and extends out of the second avoidance hole position.

[0011] Optionally, the connection panel includes a first panel, a second panel, a third panel and a fourth panel. The first panel, the second panel, the third panel and the fourth panel are connected end to end. The first panel, the second panel, the third panel and the fourth panel are arranged on the outer periphery of the first avoidance hole position. One end of the fourth panel away from the first avoidance hole position is bent in a direction perpendicular to the plane where the first avoidance hole position is located to form a bending part.

[0012] Optionally, it further includes a first fixing structure, and the connection panel and the frame assembly are connected through the first fixing structure.

[0013] Optionally, the first fixing structure includes a plurality of first bolt holes, a plurality of second bolt holes and a plurality of first fastening bolts. The first bolt holes are arranged around the connection panel, and the second bolt holes are provided at positions on the frame assembly corresponding to the first bolt holes. The first fastening bolts sequentially pass through the correspondingly arranged first bolt holes and the second bolt holes to form a threaded connection structure.

[0014] Optionally, the first fixing structure includes a plurality of first gaskets. A plurality of the first gaskets are provided on the side of the connection panel close to the frame assembly. First gasket grooves are provided at positions on the frame assembly corresponding to the first gaskets. The first gaskets are respectively embedded into the corresponding first gasket grooves.

[0015] Optionally, a sealing structure is provided between the area where the second end of the first connector extends out of the second avoidance hole position and the connection panel.

[0016] Optionally, the sealing structure includes a first sealing structure. A welding area is formed on the outer surface of the second end of the first joint extending out of the second avoidance hole position. The second end of the first joint and the connection panel form the first sealing structure by welding in the welding area.

[0017] Optionally, the sealing structure includes a second sealing structure. The sealing structure includes a fitting and a second fixing structure. The fitting is provided with a second through hole corresponding to the position of the second avoidance hole position. The end of the second end of the first joint extending out of the second avoidance hole position is embedded in the second through hole.

[0018] Optionally, the second fixing structure includes a plurality of third bolt holes, a plurality of fourth bolt holes and a plurality of second fastening bolts. The third bolt holes are arranged on the outer periphery of the second through hole. The fourth bolt holes are arranged on the connection panel corresponding to the positions of the third bolt holes. The second fastening bolts sequentially pass through the third bolt holes and the fourth bolt holes to fixedly connect the fitting and the connection panel.

[0019] Optionally, the second fixing structure includes a plurality of second sealing gaskets. A plurality of the second sealing gaskets are arranged on one side of the fitting close to the connection panel. The second sealing grooves are arranged on the connection panel corresponding to the positions of the second sealing gaskets. The second sealing gaskets are respectively embedded in the corresponding second sealing grooves.

[0020] Optionally, the sealing structure includes a third sealing structure. The third sealing structure is connected to the outer periphery of the second avoidance hole position and extends in a direction perpendicular to the plane where the connection panel is located. The end of the second end of the first joint extending out of the second avoidance hole position is embedded in the third sealing structure.

[0021] Optionally, the direction perpendicular to the cold plate assembly is the width direction of the first joint and the first avoidance hole position. The width of the first joint is W1, and the width of the first avoidance hole position is W2. W1 and W2 satisfy the relational expression: 2 ≤ W2 - W1 ≤ 3; the unit is mm.

[0022] Optionally, at least one second joint is further arranged on the cold plate assembly. A single medium port is arranged on the second joint.

[0023] Optionally, a third avoidance hole position is arranged on the frame assembly corresponding to the second end of the second joint. The second joint passes through the third avoidance hole position.

[0024] Optionally, the frame assembly includes a first frame, a second frame, a third frame and a fourth frame. The first frame, the second frame, the third frame and the fourth frame are connected end to end to form the frame assembly.

[0025] Optionally, at least one of the first frame, the second frame, the third frame, and the fourth frame is provided with the first avoidance hole position and / or the third avoidance hole position.

[0026] Optionally, the cold plate assembly further includes a first cooling plate and a second cooling plate. Along the direction perpendicular to the first cooling plate, the projection of the second cooling plate falls within the first cooling plate, and the second cooling plate is disposed at one end of the first cooling plate; the first cooling plate is communicated with the first joint, and the second cooling plate is communicated with the second joint.

[0027] On the other hand, the present invention provides a battery device, including the battery system tray and the battery as described above, and the battery is disposed within the battery system tray.

[0028] On yet another aspect, the present invention provides a vehicle, and the vehicle includes the battery device as described above.

[0029] According to the battery system tray provided by the present invention, by adding a connection panel, the assembly of the whole package is realized without changing the original process flow, and the airtightness of the whole package is ensured. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0031] Figure 1 is a schematic structural diagram of a battery system tray provided by the first embodiment of the present invention;

[0032] Figure 2 is Figure 1 a partial enlarged schematic view of A in

[0033] Figure 3 is Figure 1 a cross-sectional schematic view of

[0034] Figure 4 is Figure 1 a schematic structural diagram of the connection panel in

[0035] Figure 5 is a schematic structural diagram of a battery system tray provided by the second embodiment of the present invention;

[0036] Figure 6 is Figure 5 a partial enlarged schematic view of B in

[0037] Figure 7 is Figure 5 a schematic cross-sectional view;

[0038] Figure 8 is Figure 5 a schematic structural view of the mating parts in

[0039] Figure 9 a schematic structural view of the battery system tray provided by the third embodiment of the present utility model;

[0040] Figure 10 is Figure 9 a partially enlarged schematic view of C in

[0041] Figure 11 is Figure 9 a schematic structural view of the connection panel in

[0042] The reference numerals in the accompanying drawings of the specification are as follows:

[0043] Frame assembly; 11 - First avoidance hole position; 12 - First frame; 13 - Second frame; 14 - Third frame; 15 - Fourth frame; 16 - Third avoidance hole position; 17 - Vertical plate; 18 - Horizontal plate; 2 - Cold plate assembly; 21 - First joint; 22 - Second joint; 23 - First cooling plate; 24 - Second cooling plate; 25 - Medium port; 3 - Connection panel; 31 - Second avoidance hole position; 32 - First panel; 33 - Second panel; 34 - Third panel 34; 35 - Fourth panel; 351 - Bending part; 4 - First fixing structure; 41 - First bolt hole; 42 - Second bolt hole; 43 - First fastening bolt; 44 - First gasket; 45 - First sealing groove; 5 - First sealing structure; 51 - Welding area; 6 - Second sealing structure; 61 - Mating part; 611 - Second through hole; 62 - Second fixing structure; 621 - Third bolt hole; 622 - Fourth bolt hole; 623 - Second fastening bolt; 624 - Second gasket; 625 - Second sealing groove; 7 - Third sealing structure. Detailed implementation manners

[0044] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0046] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] As Figure 1 , Figure 4 , Figure 5 and Figure 9 shown, in an embodiment, the present utility model provides a battery system tray on the one hand, which includes a frame assembly 1, a cold plate assembly 2 and a connection panel 3. The frame assembly 1 is connected to the outer periphery of the cold plate assembly 2 and extends in a direction perpendicular to the plane where the cold plate assembly 2 is located. A first joint 21 is provided on the cold plate assembly 2. The first end of the first joint 21 is connected to the plane where the cold plate assembly 2 is located, and the second end of the first joint 21 extends towards the frame assembly 1. A first avoidance hole 11 is provided at the position corresponding to the second end of the first joint 21 on the frame assembly 1. The first joint 21 passes through the first avoidance hole 11 and is installed on the connection panel 3.

[0048] Most of the trays in the prior art are formed by welding extruded aluminum parts, and their cooling systems use joints with a single medium port 25. Its assembly process flow is to connect the bottom of the cold plate assembly 2 and the frame assembly 1 by friction stir welding, and perform a primary airtightness test to ensure that the friction stir welding seam is qualified.

[0049] The joint provided on the cold plate assembly 2 can be installed at the bottom of the frame assembly 1 by tilting at an angle without interference. After the cooling system adopts the first joint 21 (a joint with multiple medium ports 25), if assembled according to the original process, the cold plate assembly 2 cannot be installed at the bottom of the frame assembly 1. Therefore, the process flow needs to be adjusted to assemble the cold plate assembly 2 and the frame assembly 1 first and then weld them together. At this time, since the overlapping part between the original frame assemblies 1 is shielded by the cold plate assembly 2 at the bottom, full welding cannot be achieved, and it is difficult to ensure the airtightness of the tray.

[0050] Specifically, in this application, by adding the connection panel 3, without changing the assembly process, the tray with the double-joint form in this application still has the same assembly process as the traditional single-joint form, that is, the cold plate assembly 2 and the bottom of the frame assembly 1 are connected by friction stir welding.

[0051] The specific assembly process is as follows: The second end of the first joint 21 passes through the first avoidance hole 11 and extends out of the first avoidance hole 11, and then the cold plate assembly 2 and the bottom of the frame assembly 1 are connected by friction stir welding. After that, the connection panel 3 is moved towards the direction close to the first avoidance hole 11, so that the second end of the first joint 21 passes through the second avoidance hole 31 and extends out of the second avoidance hole 31.

[0052] Furthermore, the connection panel 3 has a simple structure and is easy to process and manufacture. It can be manufactured by stamping, and it is easy to achieve mass production. At the same time, the structural form of the connection panel 3 changes less for different forms of the first joint 21; there are various materials for the connection panel 3 without limitation: the panel material can be the same as the frame material, such as 6-series aluminum alloy or 5-series aluminum alloy; under the condition of ensuring that the connection meets the corrosion resistance requirements of the whole package, the panel material can also be different from the frame material, such as using steel.

[0053] Furthermore, the number and position of the first joints 21 are not limited; the battery pack can add the first joints 21 on one or more sides of the frame assembly 1 according to requirements to achieve sub-region cooling inside the package. The increase in the number of the first joints 21 can be achieved by changing the number of the connection panels 3.

[0054] As Figure 2 shown, in an embodiment, a plurality of medium ports 25 are provided on the first joint 21.

[0055] Specifically, the medium includes cooling liquid and / or cooling gas. When the medium is cooling liquid, the medium port 25 includes a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet do not share the same medium port 25; when the medium is cooling gas, the medium port 25 includes an air inlet and an air outlet, and the air inlet and the air outlet do not share the same medium port 25.

[0056] A plurality of medium ports 25 are provided on the first connector 21, which can improve the cooling efficiency of the battery system.

[0057] Furthermore, the number and position of the first connectors 21 are not limited; a plurality of first connectors 21 are provided on the cold plate assembly 2, first avoidance hole positions 11 are provided at the positions corresponding to the second ends of the first connectors 21 on the frame assembly 1, and a plurality of connection panels 3 are also provided. The plurality of first connectors 21 respectively pass through the first avoidance hole positions 11 and are installed on the connection panels 3.

[0058] The battery pack increases the number of the first connectors 21, the first avoidance hole positions 11 and the connection panels 3 on one or more sides of the frame assembly 1 according to requirements to achieve sub-region cooling within the battery pack.

[0059] As Figure 4 shown, in an embodiment, a second avoidance hole position 31 is opened at the position of the connection panel 3 corresponding to the first avoidance hole position 11, and the second end of the first connector 21 sequentially passes through the first avoidance hole position 11 and the second avoidance hole position 31 and extends out of the second avoidance hole position 31.

[0060] Specifically, by adding the connection panel 3, without changing the assembly process, the double-connector form tray of the present application still has the same assembly process as the traditional single-connector form, that is, the cold plate assembly 2 and the bottom of the frame assembly 1 are connected by friction stir welding.

[0061] Furthermore, the second end of the first connector 21 extends out of the second avoidance hole position 31, which is convenient for sealing the connection panel 3 and the frame assembly 1 to ensure the airtightness of the tray.

[0062] As Figure 4 shown, in an embodiment, the connection panel 3 includes a first panel 32, a second panel 33, a third panel 34 and a fourth panel 35. The first panel 32, the second panel 33, the third panel 34 and the fourth panel 35 are connected end to end. The first panel 32, the second panel 33, the third panel 34 and the fourth panel 35 are arranged on the outer periphery of the first avoidance hole position 11, and one end of the fourth panel 35 far from the first avoidance hole position 11 is bent along a direction perpendicular to the plane where the first avoidance hole position 11 is located to form a bending portion 351.

[0063] Specifically, along the direction perpendicular to the plane of the cold plate assembly 2, the cross-section of the frame assembly 1 is L-shaped. The frame assembly includes a vertical plate 17 and a horizontal plate 18. The first avoidance hole position 11 is provided on the vertical plate 17. Therefore, the first panel 32, the second panel 33, the third panel 34 and the fourth panel 35 are arranged on the outer periphery of the first avoidance hole position 11, and the bending portion 351 of the fourth panel 35 contacts the horizontal plate 18 of the frame assembly.

[0064] As Figure 1 、Figure 4 , Figure 5 and Figure 9 As shown in Figure 4 , Figure 5 and Figure 9 , in one embodiment, it further includes a first fixing structure 4, and the connecting panel 3 and the frame assembly 1 are connected through the first fixing structure 4.

[0065] Specifically, in this application, by using the connection between the connecting panel 3 and the frame assembly 1 through the first fixing structure 4, the assembly of the whole package is realized without changing the original process flow, ensuring the airtightness of the whole package.

[0066] As Figure 2-3 shown, in one embodiment, the first fixing structure 4 includes a plurality of first bolt holes 41, a plurality of second bolt holes 42 and a plurality of first fastening bolts 43. The first bolt holes 41 are arranged around the connecting panel 3, and the frame assembly 1 is provided with second bolt holes 42 corresponding to the positions of the first bolt holes 41. The first fastening bolts 43 sequentially pass through the correspondingly arranged first bolt holes 41 and second bolt holes 42 to form a threaded connection structure.

[0067] Specifically, the first bolt holes 41 are arranged at one ends of the first panel 32, the second panel 33, the third panel 34 and the fourth panel 35 away from the first avoidance hole position 11. By setting the first fixing structure 4, the frame assembly 1 and the connecting panel 3 are fixedly connected, and the assembly of the whole package is realized without changing the original process flow, ensuring the airtightness of the whole package.

[0068] Furthermore, the positions and quantities of the first bolt holes 41, the second bolt holes 42 and the first fastening bolts 43 can be correspondingly changed according to the positions and sizes of the first avoidance hole position 11 and the first joint 21.

[0069] As Figure 2-3 shown, in one embodiment, the first fixing structure 4 includes a plurality of first gaskets 44. A plurality of first gaskets 44 are arranged on the side of the connecting panel 3 close to the frame assembly 1, and first gasket grooves 45 corresponding to the first gaskets 44 are arranged on the frame assembly 1. The first gaskets 44 are respectively embedded in the corresponding first gasket grooves 45.

[0070] Specifically, the first gaskets 44 are embedded in the corresponding first gasket grooves 45, thus ensuring the airtightness between the connecting panel 3 and the frame assembly 1.

[0071] Furthermore, the positions and quantities of the first gaskets 44 and the first gasket grooves 45 can be correspondingly changed according to the positions and sizes of the first avoidance hole position 11 and the first joint 21.

[0072] As Figure 2-3 shown, in one embodiment, there is a sealing structure between the area where the second end of the first joint 21 extends out of the second avoidance hole position 31 and the connecting panel 3.

[0073] By setting up a sealing structure to seal the first joint 21 and the connection panel 3, the connection performance and sealing performance between the connection panel 3 and the first joint 21 are improved, thereby enhancing the connection performance and sealing performance between the connection panel 3 and the battery pack.

[0074] As Figure 2-3 shown, in the first embodiment, the sealing structure includes a first sealing structure 5. A welding area 51 is formed on the outer surface where the second end of the first joint 21 extends out of the second avoidance hole position 31. The second end of the first joint 21 and the connection panel 3 form the first sealing structure 5 by welding in the welding area 51.

[0075] Specifically, by welding to form the first sealing structure 5 between the second end of the first joint 21 and the connection panel 3, the connection performance and sealing performance between the connection panel 3 and the battery pack are improved, and the strength and airtightness between the connection panel 3 and the frame assembly 1 are also enhanced.

[0076] As Figure 5-8 shown, in the second embodiment, the sealing structure includes a second sealing structure 6. The sealing structure includes a fitting 61 and a second fixing structure 62. The fitting 61 is provided with a second through hole 611 corresponding to the position of the second avoidance hole position 31, and the end of the second end of the first joint 21 extending out of the second avoidance hole position 31 is embedded in the second through hole 611.

[0077] Specifically, the second sealing structure 6 fixedly connects the fitting 61 and the connection panel 3 through the second fixing structure 62, and the connection method of the fitting 61 and the second fixing structure 62 completely replaces the welding method.

[0078] As Figure 6-8 shown, in one embodiment, the second fixing structure 62 includes a plurality of third bolt holes 621, a plurality of fourth bolt holes 622, and a plurality of second fastening bolts 623. The third bolt holes 621 are provided on the outer periphery of the second through hole 611, the fourth bolt holes 622 are provided at positions corresponding to the third bolt holes 621 on the connection panel 3, and the second fastening bolts 623 sequentially pass through the third bolt holes 621 and the fourth bolt holes 622 to fixedly connect the fitting 61 and the connection panel 3.

[0079] Specifically, by setting up the second fixing structure 62 to fixedly connect the fitting 61 and the connection panel 3, completely replacing the welding method, the connection performance and sealing performance between the connection panel 3 and the first joint 21 are improved, thereby enhancing the connection performance and sealing performance between the connection panel 3 and the battery pack.

[0080] Furthermore, the positions and quantities of the third bolt holes 621, the fourth bolt holes 622, and the second fastening bolts 623 can be correspondingly changed according to the positions and sizes of the first avoidance hole position 11 and the first joint 21.

[0081] As Figure 6-8 shown, in one embodiment, the second fixing structure 62 includes a plurality of second gaskets 624. A plurality of second gaskets 624 are provided on the side of the fitting 61 close to the connection panel 3. Second sealing grooves 625 are provided at positions corresponding to the second gaskets 624 on the connection panel 3, and the second gaskets 624 are respectively embedded in the corresponding second sealing grooves 625.

[0082] Specifically, the second gaskets 624 are embedded in the corresponding second sealing grooves 625, thereby ensuring the airtightness between the connection panel 3 and the frame assembly 1.

[0083] Furthermore, the positions and numbers of the second gaskets 624 and the second sealing grooves 625 can be correspondingly changed according to the positions and sizes of the first avoidance holes 11 and the first connectors 21.

[0084] The second sealing structure 6 uses the second fixing structure 62 to fixedly connect the fitting 61 and the connection panel 3. At the same time, a plurality of second gaskets 624 are provided on the side of the fitting 61 close to the connection panel 3. Compared with the first sealing structure 5, the second sealing structure 6 can reduce the welding deformation and stress between the first connector 21 and the connection panel 3.

[0085] As Figure 9-11 shown, in one embodiment, the sealing structure includes a third sealing structure 7. The third sealing structure 7 is connected to the outer periphery of the second avoidance hole 31 and extends in a direction perpendicular to the plane of the connection panel 3. The second end of the first connector 21 extending out of the end of the second avoidance hole 31 is embedded in the third sealing structure 7.

[0086] The third sealing structure 7 is equivalent to integrating the connection panel 3 onto the fitting 61 of the first connector 21. Compared with Embodiment 1, the welding process can be reduced, and compared with Embodiment 2, the second fixing structure 62 can be reduced.

[0087] The third sealing structure 7 has a simple structure, is easy to process and manufacture, is convenient for installation, and improves production efficiency.

[0088] As Figure 1 、 Figure 5 and Figure 9 shown, in one embodiment, the direction perpendicular to the cold plate assembly 2 is the width direction of the first connector 21 and the first avoidance hole 11. The width of the first connector 21 is W1, and the width of the first avoidance hole 11 is W2. W1 and W2 satisfy the relational expression: 2≤W2 - W1≤3; the unit is mm.

[0089] If the width difference between the first joint 21 and the first avoidance hole position 11 is less than 2 mm, it will affect the assembly of the cold plate assembly 2 and the frame assembly 1; if the width difference between the first joint 21 and the first avoidance hole position 11 is greater than 3 mm, it will cause the position of the friction stir welding at the bottom of the cold plate assembly 2 and the frame assembly 1 to shift outwards, affecting the maximum contour size of the entire battery pack.

[0090] As Figure 1 , Figure 5 and Figure 9 shown, in one embodiment, at least one second joint 22 is further provided on the cold plate assembly 2, and a single medium port 25 is provided on the second joint 22.

[0091] Specifically, the medium includes a cooling liquid and / or a cooling gas. When the medium is a cooling liquid, the medium port 25 is a liquid medium buckle, which can both inlet and outlet liquid, and the inlet and outlet share a single medium port 25; when the medium is a cooling gas, the medium port 25 is a gas medium buckle, which can both inlet and outlet gas, and the inlet and outlet share a single medium port 25.

[0092] As Figure 1 , Figure 5 and Figure 9 shown, in one embodiment, a third avoidance hole position 16 is provided on the frame assembly 1 corresponding to the second end of the second joint 22, and the second joint 22 passes through the third avoidance hole position 16.

[0093] Specifically, the first end of the second joint 22 is connected to the plane where the cold plate assembly 2 is located, and the second end of the second joint 22 extends towards the frame assembly 1.

[0094] Furthermore, the number and position of the second joints 22 are not limited; the battery pack can add the second joints 22 and the third avoidance hole positions 16 on one or more sides of the frame assembly 1 according to requirements to achieve sub-region cooling within the battery pack.

[0095] As Figure 1 , Figure 5 and Figure 9 shown, in one embodiment, the frame assembly 1 includes a first frame 12, a second frame 13, a third frame 14, and a fourth frame 15, and the first frame 12, the second frame 13, the third frame 14, and the fourth frame 15 are connected end to end to form the frame assembly 1.

[0096] Specifically, the lap joints of the first frame 12, the second frame 13, the third frame 14, and the fourth frame 15 are connected by welding.

[0097] As Figure 1 , Figure 5 and Figure 9As shown, in one embodiment, at least one of the first frame 12, the second frame 13, the third frame 14, and the fourth frame 15 is provided with a first avoidance hole position 11 and / or a third avoidance hole position.

[0098] Specifically, the position and size of the first avoidance hole position 11 can be set accordingly according to the position and size of the first joint 21; the position and size of the third avoidance hole position 11 can be set accordingly according to the position and size of the second joint 21; the first joint and the second joint 21 can be located on the frames on the same side or can be set on the frames on different sides, and multiple first joints 21 and / or multiple second joints 22 can be set on the frames on the same side.

[0099] Multiple first joints 21 and second joints 22 can be provided to achieve sub-region cooling within the battery pack.

[0100] Such as Figure 1 、 Figure 5 and Figure 9 As shown, in one embodiment, the cold plate assembly 2 further includes a first cooling plate 23 and a second cooling plate 24. Along the direction perpendicular to the first cooling plate 23, the projection of the second cooling plate 24 falls within the first cooling plate 23, and the second cooling plate 24 is provided at one end of the first cooling plate 23; the first cooling plate 23 is in communication with the first joint 21, and the second cooling plate 24 is in communication with the second joint 22.

[0101] Specifically, multiple first joints 21 can be connected to the first cooling plate 23, and multiple second joints 22 can be connected to the second cooling plate 24.

[0102] Furthermore, the first cooling plate 23 and the second cooling plate 24 can be direct cooling or liquid cooling.

[0103] On the other hand, the present utility model provides a battery device, including the battery system tray and the battery as described above, and the battery is disposed within the battery system tray.

[0104] The number of batteries can be one or more. When the number of batteries is multiple, the multiple batteries can be connected in series or in parallel. For example, the multiple batteries can be connected in series in sequence. The multiple batteries can also all be connected in parallel. Of course, a part of the multiple batteries can be connected in series, and another part can be connected in parallel, and the two parts of the battery parts are then connected in series.

[0105] On yet another aspect, the present utility model provides a vehicle, and the vehicle includes the battery device as described above.

[0106] In the embodiments of the present application, an automobile having the above battery device can make the battery device have good airtightness.

[0107] Specifically, the vehicle includes but is not limited to a pure electric vehicle, an extended-range electric vehicle, a plug-in hybrid vehicle, and a non-plug-in hybrid vehicle. In one embodiment, an on-vehicle power supply may be provided on the vehicle. The on-vehicle power supply can supply electric energy to the electrical devices on the vehicle. The miniaturization of the on-vehicle power supply is conducive to the reasonable configuration of the structure on the vehicle.

[0108] It can be understood that the series connection mode of multiple batteries can be adjusted adaptively according to the output voltage of the battery device, and details are not described herein.

[0109] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery system tray, characterized in that: It includes a frame assembly, a cold plate assembly and a connecting panel, the frame assembly is connected to the outer periphery of the cold plate assembly and extends in a direction perpendicular to the plane where the cold plate assembly is located, the cold plate assembly is provided with a first joint, the first end of the first joint is connected to the cold plate assembly, the second end of the first joint extends toward the direction of the frame assembly, a first avoidance hole is provided at a position on the frame assembly corresponding to the second end of the first joint, the connecting panel is installed at the first avoidance hole, and the first joint passes through the first avoidance hole and is installed on the connecting panel.

2. The battery system tray according to claim 1, characterized in that: The first joint is provided with a plurality of medium ports.

3. The battery system tray according to claim 1, characterized in that: A second avoidance hole is provided on the connection panel at a position corresponding to the first avoidance hole, and the second end of the first connector passes through the first avoidance hole and the second avoidance hole in sequence and extends out of the second avoidance hole.

4. The battery system tray according to claim 1, characterized in that: The connecting panel includes a first panel, a second panel, a third panel and a fourth panel, the first panel, the second panel, the third panel and the fourth panel are connected end to end, the first panel, the second panel, the third panel and the fourth panel are arranged on the periphery of the first avoidance hole, and one end of the fourth panel away from the first avoidance hole is bent in a direction perpendicular to the plane where the first avoidance hole is located to form a bent portion.

5. The battery system tray according to claim 4, characterized in that: It also includes a first fixing structure, and the connecting panel and the frame assembly are connected via the first fixing structure.

6. The battery system tray according to claim 5, characterized in that: The first fixing structure includes a plurality of first bolt holes, a plurality of second bolt holes and a plurality of first fastening bolts. The first bolt holes are arranged around the connecting panel, and the second bolt holes are arranged at positions corresponding to the first bolt holes in the frame assembly. The first fastening bolts pass through the corresponding first bolt holes and the second bolt holes in sequence to form a threaded connection structure.

7. The battery system tray according to claim 5, characterized in that: The first fixing structure includes a plurality of first sealing pads, and a plurality of the first sealing pads are arranged on a side of the connecting panel close to the frame assembly. Positions on the frame assembly corresponding to the first sealing pads are each provided with a first sealing groove, and the first sealing pads are respectively embedded in the corresponding first sealing grooves.

8. The battery system tray according to claim 3, characterized in that: A sealing structure is provided between the area where the second end of the first joint extends out of the second avoidance hole and the connection panel.

9. The battery system tray according to claim 8, characterized in that: The sealing structure includes a first sealing structure, wherein a welding area is formed on the outer surface of the second avoidance hole extending from the second end of the first joint, and the second end of the first joint and the connecting panel are welded in the welding area to form the first sealing structure.

10. The battery system tray according to claim 8, characterized in that: The sealing structure includes a second sealing structure, which includes a matching piece and a second fixing structure. The matching piece is provided with a second through hole at a position corresponding to the second avoidance hole. The second end of the first joint extends out of the end of the second avoidance hole and is embedded in the second through hole.

11. The battery system tray according to claim 10, characterized in that: The second fixing structure includes a plurality of third bolt holes, a plurality of fourth bolt holes and a plurality of second fastening bolts. The third bolt holes are arranged on the periphery of the second through hole, and the fourth bolt holes are arranged at positions corresponding to the third bolt holes on the connecting panel. The second fastening bolts pass through the third bolt holes and the third bolt holes in sequence to fix the mating piece and the connecting panel.

12. The battery system tray according to claim 10, characterized in that: The second fixing structure includes a plurality of second sealing pads, and a plurality of second sealing pads are arranged on a side of the mating piece close to the connecting panel. Second sealing grooves are arranged at positions corresponding to the second sealing pads on the connecting panel, and the second sealing pads are respectively embedded in the corresponding second sealing grooves.

13. The battery system tray according to claim 8, characterized in that: The sealing structure includes a third sealing structure, which is connected to the outer periphery of the second avoidance hole and extends in a direction perpendicular to the plane where the connection panel is located. The second end of the first joint extends out of the end of the second avoidance hole and is embedded in the third sealing structure.

14. The battery system tray according to claim 1, characterized in that: The direction perpendicular to the cold plate assembly is the width direction of the first joint and the first avoidance hole, the width of the first joint is W1, the width of the first avoidance hole is W2, W1 and W2 satisfy the relationship: 2≤W2-W1≤3; the unit is mm.

15. The battery system tray according to claim 1, characterized in that: The cold plate assembly is also provided with at least one second joint, and the second joint is provided with a single medium port.

16. The battery system tray according to claim 15, characterized in that: A third avoidance hole is provided on the frame assembly at a position corresponding to the second end of the second joint, and the second joint passes through the third avoidance hole.

17. The battery system tray according to claim 16, characterized in that: The frame assembly includes a first frame, a second frame, a third frame and a fourth frame. The first frame, the second frame, the third frame and the fourth frame are connected end to end to form the frame assembly.

18. The battery system tray according to claim 17, characterized in that: The first avoidance hole position and / or the third avoidance hole position is arranged on at least one of the first frame, the second frame, the third frame and the fourth frame.

19. The battery system tray according to claim 15, characterized in that: The cold plate assembly also includes a first cooling plate and a second cooling plate. Along a direction perpendicular to the first cooling plate, the projection of the second cooling plate falls into the first cooling plate, and the second cooling plate is arranged at one end of the first cooling plate; the first cooling plate is connected to the first joint, and the second cooling plate is connected to the second joint.

20. A battery device, characterized in that: It comprises a battery system tray and a battery as described in any one of claims 1 to 19, wherein the battery is arranged in the battery system tray.

21. A vehicle, characterized in that: The vehicle includes the battery device of claim 20.

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