Upper cover plate assembly, battery pack and vehicle

Abstract

The utility model belongs to the technical field of power batteries, and particularly relates to an upper cover plate assembly, a battery pack and a vehicle, the upper cover plate assembly comprises an upper cover plate body and a plurality of cooling plates, the upper cover plate body is provided with a plurality of reinforcing ribs, the reinforcing ribs are arranged at intervals, accommodating grooves are formed in the reinforcing ribs, and the cooling plates are arranged in the accommodating grooves. An accommodating groove is formed in the upper cover plate body, an opening is formed in one side, facing a battery cell, of the accommodating groove, the plurality of cooling plates are respectively connected with the upper cover plate body, the cooling plates are positioned in the accommodating groove, and the plurality of cooling plates are in one-to-one correspondence with the plurality of reinforcing ribs. The upper cover plate assembly provided by the utility model can improve the space utilization rate in the battery cell and the electric quantity of the battery pack.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of power batteries, and specifically relate to an upper cover plate assembly, a battery pack and a vehicle. Background Art

[0002] The driving range is an important evaluation index of electric vehicle performance. The power of the battery pack is one of the important factors affecting the driving range of electric vehicles. The larger the available space of the battery cells in the battery pack, the higher the battery pack power. However, during the operation of the battery pack, it needs to be adjusted to a suitable temperature to ensure the normal operation of the battery cells.

[0003] In the prior art, thermal management of battery packs generally involves cooling and heating the battery cells through a liquid cooling plate. Since the liquid cooling plate needs to maintain contact with the battery cells, it needs to occupy a portion of the available space of the battery cells in the battery pack, which in turn reduces the available space of the battery cells in the battery pack and causes a decrease in the battery pack charge. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides an upper cover assembly, which can improve the space utilization rate inside the battery core and the battery pack power.

[0005] An embodiment of the utility model further provides a battery pack.

[0006] An embodiment of the utility model also provides a vehicle.

[0007] The upper cover assembly of the embodiment of the utility model comprises:

[0008] An upper cover body, wherein the upper cover body has a plurality of reinforcing ribs, the plurality of reinforcing ribs are arranged at intervals, the reinforcing ribs have a receiving groove therein, and the receiving groove has an opening on a side facing the battery cell;

[0009] A plurality of cooling plates are respectively connected to the upper cover plate body, the cooling plates are located in the accommodating grooves, and the plurality of cooling plates correspond to the plurality of reinforcing ribs one by one.

[0010] The upper cover plate assembly of the embodiment of the utility model can improve the space utilization rate inside the battery cell and the power of the battery pack.

[0011] In some embodiments, the reinforcing ribs extend along the length direction of the upper cover body, a plurality of the reinforcing ribs are arranged at intervals in the width direction of the upper cover body, and a plurality of the reinforcing ribs are arranged parallel to each other, and / or a plurality of the cooling plates are arranged parallel to each other.

[0012] In some embodiments, a first adhesive layer is provided between the cooling plate and the upper cover plate body, the thickness of the first adhesive layer is A, and 0.8 mm ≤ A ≤ 3 mm.

[0013] In some embodiments, the cooling plate includes a plate body and an outer coating, wherein the outer coating covers the outside of the plate body, and a plurality of independent cooling channels are arranged inside the plate body.

[0014] In some embodiments, the width of the cooling plate is L1, and 50mm≤L1≤200mm, the height of the cooling plate is H1, and 2.5mm≤H1≤7.5mm, the width of the cooling channel is L2, and 5mm≤L2≤40mm, the thickness of the outer coating is T2, and 0.25mm≤T2≤1mm, and the thickness of the plate body is T1, and 0.5mm≤T1≤2mm.

[0015] In some embodiments, the plate body has a plurality of partitions, the partitions are arranged in parallel and spaced apart in the width direction of the cooling plate, the width of the partitions is L3, and 0.5 mm ≤ L3 ≤ 3 mm.

[0016] The battery pack of the present utility model embodiment includes:

[0017] A plurality of battery cells, wherein the plurality of battery cells are arranged in sequence;

[0018] An upper cover plate assembly, wherein the upper cover plate assembly is any of the upper cover plate assemblies described above, and the upper cover plate assembly is located above the battery cell.

[0019] The battery pack of the embodiment of the utility model adopts the above-mentioned upper cover plate assembly, which can improve the space utilization rate inside the battery cell and the power of the battery pack.

[0020] In some embodiments, an extension direction of the cooling plate and an arrangement direction of the plurality of battery cells have a preset angle.

[0021] In some embodiments, the thickness of the upper cover plate body is T3, and 0.6 mm ≤ T3 ≤ 1.5 mm, a heat conductive layer is provided between the cooling plate and the battery core, and the thickness of the heat conductive layer is T4, and 0.8 mm ≤ T4 ≤ 3 mm.

[0022] The vehicle of the embodiment of the utility model includes a battery pack as described in any one of the above items.

[0023] The vehicle of the embodiment of the utility model adopts the above-mentioned upper cover plate assembly, which can improve the space utilization rate inside the battery cell and the battery pack power. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an upper cover plate assembly of an embodiment of the utility model.

[0025] Figure 2 It is a cross-sectional view of an upper cover plate assembly according to an embodiment of the utility model.

[0026] Figure 3 Schematic diagram of a cooling plate according to an embodiment of the present invention.

[0027] Figure 4 It is a cross-sectional view of a battery pack according to an embodiment of the present utility model.

[0028] Figure 5 It is a schematic diagram of a battery pack according to an embodiment of the present utility model.

[0029] Figure 6 It is a schematic diagram of the upper cover body of an embodiment of the utility model.

[0030] Reference numerals:

[0031] Upper cover body 1, reinforcing rib 11, receiving groove 12,

[0032] Cooling plate 2, plate body 21, partition 211, outer coating 22, cooling channel 23,

[0033] The first adhesive layer 3,

[0034] Heat conducting layer 4, bottom plate 5,

[0035] Battery cell 10, upper cover assembly 20, DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0037] The upper cover assembly 20 of the embodiment of the utility model includes an upper cover body 1 and multiple cooling plates 2. The upper cover body 1 has multiple reinforcing ribs 11, and the multiple reinforcing ribs 11 are arranged at intervals. The reinforcing ribs 11 have accommodating grooves 12, and the accommodating grooves 12 have an opening on the side facing the battery cell 10. The multiple cooling plates 2 are respectively connected to the upper cover body 1, and the cooling plates 2 are located in the accommodating grooves 12, and the multiple cooling plates 2 correspond to the multiple reinforcing ribs 11 one by one.

[0038] Specifically, Figure 1 and Figure 2 As shown, the upper cover body 1 extends in the front-to-back direction, and a plurality of reinforcing ribs 11 are provided on the upper cover body 1. The plurality of reinforcing ribs 11 are arranged at intervals in the left-to-right direction.

[0039] A receiving groove 12 is provided below the reinforcing rib 11. The receiving groove 12 has an opening downward to install a cooling plate 2. The cooling plate 2 is arranged in the receiving groove 12 and connected to the upper cover body 1. A plurality of cooling plates 2 correspond to a plurality of reinforcing ribs 11 one by one.

[0040] It can be understood that the lower end surface of the upper cover body 1 is recessed upward to form a receiving groove 12, that is, after the cooling plate 2 is installed on the upper cover body, since the cooling plate 2 is arranged in the receiving groove 12, there is no need to set up a separate installation space for the cooling plate 2. Furthermore, since the cooling plate 2 is arranged in the receiving groove 12, the lower end surface of the upper cover body 1 can be a plane, which is convenient for leaving more space for the battery pack to install a larger capacity battery. Multiple cooling plates 2 correspond to multiple reinforcing ribs 11 one by one to improve the cooling or heating effect of the battery pack.

[0041] The upper cover assembly 20 of the embodiment of the utility model is provided with a receiving groove 12 at the lower end of the upper cover body 1 to install the cooling plate 2. There is no need to set a separate installation space for the cooling plate 2, which is convenient for leaving more space for the battery pack to install batteries with larger capacity, thereby improving the space utilization inside the battery cell 10 and the battery pack power.

[0042] In some embodiments, the reinforcing ribs 11 extend along the length direction of the upper cover body 1, multiple reinforcing ribs 11 are arranged at intervals in the width direction of the upper cover body 1, and multiple reinforcing ribs 11 are arranged parallel to each other, and / or multiple cooling plates 2 are arranged parallel to each other.

[0043] Specifically, Figures 1 to 5 As shown, the reinforcing ribs 11 extend in the front-to-back direction, and the plurality of reinforcing ribs 11 are arranged at intervals in the left-to-right direction. The plurality of reinforcing ribs 11 are arranged in parallel in the left-to-right direction. At this time, the plurality of cooling plates 2 can be arranged in parallel to each other to improve the uniformity of cooling the battery pack by the cooling plates 2, or the plurality of cooling plates 2 can be arranged non-parallel, and then the plurality of cooling plates 2 can be arranged according to the difference in the overall heat dissipation of the battery pack. For example, more reinforcing ribs 11 and corresponding cooling plates 2 are arranged in areas with greater heat dissipation requirements to improve the cooling effect, and the arrangement of the reinforcing ribs 11 and corresponding cooling plates 2 can be reduced in non-heat dissipation areas.

[0044] Alternatively, multiple cooling plates 2 are arranged in parallel with each other, that is, multiple reinforcing ribs 11 are arranged at intervals in the left-right direction, and the cooling plates 2 arranged in the receiving grooves 12 are arranged in parallel at intervals in the left-right direction, so as to facilitate the cooling effect of different cooling effects.

[0045] The upper cover assembly 20 of the embodiment of the utility model can arrange the cooling plates 2 in the left-right direction on the upper edge of the upper cover body 1 to improve the uniformity of cooling the battery pack, or arrange the cooling plates 2 on the upper cover body 1 in a non-parallel manner to meet different heat dissipation requirements, thereby improving the applicability of the upper cover assembly 20.

[0046] The structural strength of the upper cover is improved, and the parallel arrangement improves the uniformity of the structural strength of the upper cover body 1.

[0047] In some embodiments, a first adhesive layer 3 is provided between the cooling plate 2 and the upper cover plate body 1 , and the thickness of the first adhesive layer 3 is A, and 0.8 mm≤A≤3 mm.

[0048] Specifically, Figures 1 to 4 As shown, a first adhesive layer 3 is provided between the upper end of the cooling plate 2 and the upper cover body 1, the lower end of the first adhesive layer 3 is connected to the upper end of the cooling plate 2, and the upper end of the first adhesive layer 3 is connected to the upper cover body 1 to fix the cooling plate 2 to prevent the cooling plate 2 from vibrating up and down during the driving of the vehicle and colliding with the upper cover or the battery pack.

[0049] The thickness of the first adhesive layer 3 in the vertical direction is A, and A can be 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.9mm, 2.0mm, 2.3mm, 2.5mm, 2.6mm, 2.8mm, 2.9mm, 3.0mm. When A is 0.8mm, the structural strength of the connection between the first adhesive layer 3 and the upper cover body 1 and the cooling plate 2 can be ensured, and the connection stability is prevented from being reduced due to the low thickness of the first adhesive layer 3. When assembling, if the cooling plate 2 has sufficient reserved installation space, the thickness of the first adhesive layer 3 can be set to 3mm to improve the stability of the connection between the cooling plate 2 and the upper cover body 1.

[0050] The upper cover assembly 20 of the utility model embodiment fixes the cooling plate 2 by setting the first adhesive layer 3, and sets the dimension A of the first adhesive layer 3 in the up and down directions to avoid the first adhesive layer 3 being too thin, which causes the connection strength between the cooling plate 2 and the upper cover body 1 to be lower than a preset range, and to avoid the first adhesive layer 3 being too thick, which causes interference between the cooling plate 2 and the upper cover body 1, thereby improving the stability of the installation of the upper cover assembly 20.

[0051] The cooling plates 2 can be arranged at intervals in the left-right direction on the upper edge of the upper cover body 1 to improve the uniformity of cooling the battery pack, or the cooling plates 2 can be arranged non-parallel on the upper cover body 1 to meet different heat dissipation requirements, thereby improving the applicability of the upper cover assembly 20.

[0052] In some embodiments, the cooling plate 2 includes a plate body 21 and an outer coating 22 , wherein the outer coating 22 is coated on the outside of the plate body 21 , and a plurality of mutually independent cooling channels 23 are disposed inside the plate body 21 .

[0053] Specifically, Figure 1 and Figure 6As shown, the cooling plate 2 includes a plate body 21 and an outer coating 22. The outer coating 22 is coated on the outside of the plate body 21 to prevent the plate body 21 from oxidation or conductivity. A plurality of interconnected cooling channels 23 are provided in the plate body 21 to facilitate the circulation of cooling liquid in the plate body 21, thereby transferring the heat of the plate body 21 and improving the cooling effect.

[0054] The outer coating 22 may be an insulating coating to prevent electrical conduction between the plate 21 and the internal components of the vehicle.

[0055] The upper cover assembly 20 of the utility model embodiment, the cooling plate 2 includes a plate body 21 and an outer coating 22, a plurality of cooling channels 23 are provided in the plate body 21 to facilitate the circulation of cooling liquid, thereby improving the cooling effect of the plate body 21, the outer coating 22 is an insulating coating, and the outer coating 22 is coated on the outside of the plate body 21 to prevent the plate body 21 from being conductive, thereby preventing a short circuit from occurring inside the car, and improving the safety of the upper cover assembly 20.

[0056] In some embodiments, the width of the cooling plate 2 is L1, and 50mm≤L1≤200mm, the height of the cooling plate 2 is H1, and 2.5mm≤H1≤7.5mm, the width of the cooling channel 23 is L2, and 5mm≤L2≤40mm, the thickness of the outer coating 22 is T2, and 0.25mm≤T2≤1mm, and the thickness of the plate body 21 is T1, and 0.5mm≤T1≤2mm.

[0057] Specifically, Figures 1 to 6 As shown, the cooling plate 2 extends in the front-to-back direction, and the dimension of the cooling plate 2 in the front-to-back direction is L1, and L1 can be 50mm, 55mm, 65mm, 75mm, 86mm, 96mm, 100mm, 105mm, 109mm, 115mm, 126mm, 138mm, 142mm, 156mm, 164mm, 176mm, 188mm, 190mm, 191mm, 192mm, 193mm, 194mm, 195mm, 196mm, 196mm , 197mm, 198mm, 199mm, 200mm, when the installation space of the heat dissipation part is reduced, that is, when part of the battery pack needs to dissipate heat, because a larger cooling plate 2 cannot be accommodated, L1 is set to 50mm to facilitate the installation of the cooling plate 2 to the heat dissipation part, so as to facilitate the installation of the cooling plate 2 for heat dissipation. When the heat dissipation range is large, that is, when the entire battery pack is cooled, L1 is set to 200mm to dissipate heat for the entire battery pack, and the cooling plates 2 are arranged at intervals in the left and right directions to expand the heat dissipation range.

[0058] The height of the cooling plate 2 is H1, and 2.5mm≤H1≤7.5mm, and H1 can be 2.5mm, 3.5mm, 4.5mm, 5.5mm, 6.5mm, or 7.5mm. When the heat dissipation demand of the battery pack is small, the cooling plate 2 can be set to 2.5mm, and the small size of the cooling plate 2 in the vertical direction also makes it easy to assemble the cooling plate 2 into the receiving groove 12, avoiding interference between the cooling plate 2 and the upper cover body 1, and improving the installation efficiency. When the size of the cooling plate 2 in the vertical direction is less than 2.5mm, the structural strength of the cooling plate 2 decreases due to the excessive size of the cooling plate 2 in the vertical direction, thereby affecting the stability of the upper cover.

[0059] When the heat dissipation demand of the battery pack is large, setting the size of the cooling plate 2 in the up and down direction to 7.5 mm facilitates the setting of a larger cooling channel 23, thereby improving the cooling effect of the cooling plate 2. The increase in the size of the cooling plate 2 in the up and down direction also improves the structural strength of the cooling plate 2.

[0060] The width of the cooling channel 23 is L2, and 5mm≤L2≤40mm, and L2 can be 5mm, 5.5mm, 6.5mm, 7.5mm, 8.5mm, 9.5mm, 10.5mm, 12.5mm, 14.5mm, 20.5mm, 27.5mm, 30.5mm, 34.5mm, 37.5mm, 39.5mm, or 40mm.

[0061] When the flow resistance of the cooling liquid flowing in the cooling channel 23 is large, L2 is set to 40 mm to increase the flow rate of the cooling liquid in the cooling plate 2, thereby improving the cooling effect of the cooling plate 2. When the flow resistance of the cooling liquid flowing in the cooling channel 23 is small, L2 can be set to 5 mm. Cooling channels 23 of different widths can be set for cooling liquids with different flow resistances to improve the cooling stability of the cooling plate 2.

[0062] The thickness of the outer coating 22 is T2, and 0.25mm≤T2≤1mm, and T2 can be 0.25mm, 0.35mm, 0.45mm, 0.55mm, 0.75mm, 0.86mm, 0.95mm, 1mm. When the thickness T2 of the outer coating 22 is set to 0.25mm, while ensuring the insulation of the outer coating 22, it is convenient to reduce the overall size of the cooling plate 2, facilitate the assembly of the cooling plate 2 into the receiving groove 12, and reduce the manufacturing cost of the cooling plate 2.

[0063] When the thickness T2 of the outer coating layer 22 is set to 1 mm, the insulation of the cooling plate 2 is improved to prevent the plate body 21 from being conductive and causing a short circuit.

[0064] The thickness of the plate body 21 is T1, and 0.5mm≤T1≤2mm. T1 can be 0.5mm, 0.55mm, 0.75mm, 0.86mm, 0.95mm, 1mm, 1.2mm, 1.3mm, 1.5mm, 1.6mm, 2.0mm. When T1 can be 0.5mm, the plate body 21 meets the structural strength and is convenient for assembling the cooling plate 2, thereby reducing the manufacturing cost. When the plate body 21 is 2.0mm, the structural strength of the plate body 21 is improved, and the size of the plate body 21 in the up and down direction is prevented from exceeding the preset range, resulting in the cooling plate 2 being unable to be assembled into the receiving groove 12.

[0065] The upper cover plate assembly 20 of the embodiment of the utility model improves the applicability of the cooling plate 2 by setting cooling plates 2 of different sizes in the front-to-back direction to correspond to different heat dissipation requirements, and limits the height of the cooling plate 2 in the up-down direction to avoid the cooling plate 2 being too large in the up-down direction, which makes it impossible to install the cooling plate 2 in the receiving groove 12, or to avoid the cooling plate 2 being too small in the up-down direction, which makes the structural strength too small, thereby improving the assembly accuracy and stability of the cooling plate 2. Cooling channels 23 of different widths are set for cooling liquids with different flow resistances to improve the stability of the cooling plate 2 during cooling operation. The thickness of the outer coating 22 is set to avoid the outer coating 22 thickness being too low and exceeding the preset range to reduce insulation, and the outer coating 22 thickness range is set to avoid the outer coating 22 thickness being too large and exceeding the preset range, which makes the manufacturing cost too high, and to avoid the outer coating 22 thickness being too large and making it impossible to assemble the cooling plate 2 in the receiving groove 12.

[0066] In some embodiments, the plate body 21 has a plurality of partitions 211 therein, and the partitions 211 are arranged in parallel and spaced apart in the width direction of the cooling plate 2 . The width of the partitions 211 is L3 , and 0.5 mm ≤ L3 ≤ 3 mm.

[0067] Specifically, Figure 2 and Figure 6As shown, a plurality of partitions 211 are provided in the plate body 21, and the partitions 211 divide the plurality of cooling channels 23. The plurality of partitions 211 are arranged in parallel and spaced apart in the left-right direction. The width of the partition 211 in the left-right direction is L3, and L3 can be 0.25mm, 0.35mm, 0.45mm, 0.55mm, 0.75mm, 0.86mm, 0.95mm, 1mm, 1.2mm, 1.3mm, 1.5mm, 1.6mm, 2.0mm, 2.5mm, 2.8mm, 3.0mm. The partitions 211 with different widths in the left-right direction are arranged to meet different structural strength requirements. For example, when a cooling plate 2 with a larger structural strength is not required, L3 can be set to 0.25mm to reduce the manufacturing cost. At this time, a cooling channel 23 with a larger size in the left-right direction can be arranged to improve the cooling effect. Or, when a cooling plate 2 with a larger structural strength is required, L3 can be set to 3.0mm.

[0068] The upper cover plate assembly 20 of the embodiment of the utility model sets the width of the partition plate 211 in the left-right direction. By adopting the partition plates 211 with different widths in the left-right direction to manufacture cooling plates 2 with different structural strengths, the applicability of the cooling plates 2 is improved.

[0069] The battery pack of the embodiment of the utility model comprises: a plurality of battery cells 10 and an upper cover assembly 20, wherein the plurality of battery cells 10 are arranged in sequence;

[0070] The upper cover plate assembly 20 is any of the upper cover plate assemblies 20 described above, and the upper cover plate assembly 20 is located above the battery cell 10 .

[0071] Specifically, Figure 2 and Figure 3 As shown, the upper end of the cooling plate 2 is connected to the upper cover body 1 through the first adhesive layer 3, and the cooling plate 2 is suitable for conducting heat to the battery cell 10.

[0072] The battery pack of the embodiment of the utility model adopts the above-mentioned upper cover plate assembly 20, and the cooling plate 2 is arranged in the receiving groove 12. The cooling plate 2 does not occupy the installation space of the battery cell 10, which can improve the space utilization inside the battery cell 10 and the battery pack power.

[0073] In some embodiments, an extension direction of the cooling plate 2 and an arrangement direction of the plurality of battery cells 10 have a preset angle.

[0074] Specifically, the arrangement direction of the battery cell 10 is the front-to-back direction, and the preset angle may be 0°, that is, the battery cell 10 and the cooling plate 2 are arranged relatively parallel, for example, the battery cell 10 and the cooling plate 2 extend in the front-to-back direction, and the battery cell 10 and the cooling plate 2 are arranged in parallel in the front-to-back direction.

[0075] Alternatively, the preset angle may be 90°, that is, the cooling plate 2 is orthogonal to the arrangement direction of the battery cells 10 , or the preset angle may be 45°, and the cooling plate 2 may be configured according to actual heat dissipation requirements to cope with different usage environments.

[0076] In the battery pack of an embodiment of the utility model, the extension direction of the cooling plate 2 is arranged at a preset angle with the arrangement direction of the multiple battery cells 10, and the cooling plate 2 can be parallel, orthogonal or inclined relative to the arrangement direction of the battery cells 10. The cooling plate 2 can be arranged according to the heat dissipation requirements to face different usage environments and improve the adaptability of the cooling plate 2.

[0077] In some embodiments, the thickness of the upper cover body 1 is T3, and 0.6 mm ≤ T3 ≤ 1.5 mm, a heat conductive layer 4 is provided between the cooling plate 2 and the battery core 10 , and the thickness of the heat conductive layer 4 is T4, and 0.8 mm ≤ T4 ≤ 3 mm.

[0078] Specifically, the thickness of the upper cover plate in the vertical direction is T3, and T3 can be 0.6mm, 0.7mm, 0.8mm, 1.0mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm. By setting the size range of the upper cover plate body 1 in the vertical direction, it is possible to avoid the upper cover plate body 1 being too thin in the vertical direction, resulting in too low a structural strength, or to avoid the upper cover plate body 1 being too thick in the vertical direction, resulting in too high a manufacturing cost.

[0079] T4 can be 0.8mm, 1.0mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.8mm, 3.0mm. Avoid the size of the heat-conducting layer 4 in the vertical direction being too small to affect the connection strength between the cooling plate 2 and the battery cell 10, and avoid the size of the heat-conducting layer 4 in the vertical direction being too large to affect the heat transfer between the cooling plate 2 and the battery cell 10, and avoid occupying the installation space of the battery cell 10.

[0080] It should be noted that the heat-conducting layer 4 may be an existing heat-conducting structural adhesive, or the heat-conducting layer 4 may be other existing adhesives.

[0081] The battery pack of the embodiment of the utility model sets the thickness of the upper cover body 1 to avoid that the thickness of the upper cover body 1 in the up-down direction is too small, resulting in too low structural strength, or that the thickness of the upper cover body 1 in the up-down direction is too large, resulting in too high manufacturing cost, and sets the size range of the thermal conductive layer 4 in the up-down direction to avoid that the size of the thermal conductive layer 4 in the up-down direction is too small, which affects the connection strength between the cooling plate 2 and the battery cell 10, and that the size of the thermal conductive layer 4 in the up-down direction is too large, which affects the heat transfer between the cooling plate 2 and the battery cell 10, thereby improving the stability and safety of the operation of the cooling plate 2.

[0082] The vehicle of the embodiment of the present invention includes a battery pack as described above.

[0083] Specifically, the vehicle also includes a base plate 5, and a preset gap is provided between the lower end surface of the base plate 5 and the upper end of the upper cover assembly 20. When the base plate 5 is not parallel to the upper cover body 1, the preset gap is 10 mm. When the base plate 5 is parallel to the upper cover body 1, the preset gap can be 8 mm. The gain of 2 mm can be used to increase the height of the battery pack, increase the available space of the battery cells 10 in the battery pack, and further increase the battery pack power.

[0084] The vehicle of the embodiment of the utility model adopts the above-mentioned upper cover assembly 20, which can improve the space utilization rate inside the battery cell 10 and the battery pack power.

[0085] 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.

[0086] 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0089] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics 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.

[0090] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An upper cover assembly, characterized in that: include: An upper cover body, wherein the upper cover body has a plurality of reinforcing ribs, the plurality of reinforcing ribs are arranged at intervals, the reinforcing ribs have a receiving groove therein, and the receiving groove has an opening on a side facing the battery cell; A plurality of cooling plates are respectively connected to the upper cover plate body, the cooling plates are located in the accommodating grooves, and the plurality of cooling plates correspond to the plurality of reinforcing ribs one by one.

2. The upper cover assembly according to claim 1, characterized in that: The reinforcing ribs extend along the length direction of the upper cover body, a plurality of the reinforcing ribs are arranged at intervals in the width direction of the upper cover body, and a plurality of the reinforcing ribs are arranged parallel to each other, and / or a plurality of the cooling plates are arranged parallel to each other.

3. The upper cover assembly according to claim 1, characterized in that: A first adhesive layer is provided between the cooling plate and the upper cover plate body, the thickness of the first adhesive layer is A, and 0.8 mm≤A≤3 mm.

4. The upper cover assembly according to claim 1, characterized in that: The cooling plate comprises a plate body and an outer coating, wherein the outer coating covers the outside of the plate body, and a plurality of mutually independent cooling channels are arranged inside the plate body.

5. The upper cover assembly according to claim 4, characterized in that: The width of the cooling plate is L1, and 50mm≤L1≤200mm, the height of the cooling plate is H1, and 2.5mm≤H1≤7.5mm, the width of the cooling channel is L2, and 5mm≤L2≤40mm, the thickness of the outer coating is T2, and 0.25mm≤T2≤1mm, and the thickness of the plate body is T1, and 0.5mm≤T1≤2mm.

6. The upper cover assembly according to claim 4 or 5, characterized in that: The plate body is provided with a plurality of partitions, and the partitions are arranged in parallel and spaced apart in the width direction of the cooling plate. The width of the partitions is L3, and 0.5 mm ≤ L3 ≤ 3 mm.

7. A battery pack, characterized in that: include: A plurality of battery cells, wherein the plurality of battery cells are arranged in sequence; An upper cover plate assembly, wherein the upper cover plate assembly is the upper cover plate assembly according to any one of claims 1 to 6, and the upper cover plate assembly is located above the battery cell.

8. The battery pack according to claim 7, characterized in that: An extension direction of the cooling plate and an arrangement direction of the plurality of battery cells have a preset angle.

9. The battery pack according to claim 7, characterized in that: The thickness of the upper cover plate body is T3, and 0.6mm≤T3≤1.5mm. A heat-conducting layer is provided between the cooling plate and the battery core, and the thickness of the heat-conducting layer is T4, and 0.8mm≤T4≤3mm.

10. A vehicle, characterized in that: Comprising a battery pack as claimed in any one of claims 7 to 9.

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