Cooling plate, battery pack and vehicle

Abstract

The utility model discloses an embodiment proposes a kind of cooling plate, battery pack and vehicle, cooling plate includes inlet flow passage and outlet flow passage, inlet flow passage and outlet flow passage are spaced apart along first direction distribution, multiple cooling flow passages along second direction parallel distribution are communicated between inlet flow passage and outlet flow passage, first direction and second direction intersect;Wherein, cooling plate is equipped with with inlet flow passage and outlet flow passage of the communication of inlet flow passage, the flow cross section of inlet flow passage is gradually increased from inlet along second direction, and / or the flow cross section of outlet flow passage is gradually increased gradually increased from outlet along second direction gradually increased.The cooling plate of the utility model embodiment, can reduce the flow resistance in cooling plate, to reduce heat loss, improve the flow distribution uniformity of each cooling flow passage, and can guarantee the consistency of liquid flow rate in each cooling flow passage, and then can improve the heat exchange effect of cooling plate whole, guarantee cooling plate use reliability, use effect is better.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a cooling plate, a battery pack, and a vehicle. Background Technology

[0002] With the development of the national economy and the continuous improvement of people's living standards, vehicles are becoming increasingly important in daily life and travel. In order to improve the environmental friendliness of travel, existing vehicles are equipped with battery packs for driving. The operational reliability of battery packs is an important issue that needs to be considered during the manufacturing process.

[0003] Existing battery packs are mostly equipped with cooling plates. When the battery pack is running, the internal structure of the battery pack will generate high temperatures. The cooling plate can carry low-temperature liquid, which can exchange heat with the other structures in the battery pack to cool down the internal structure of the battery pack and ensure that the battery pack operates within a suitable temperature range, thereby ensuring the reliability of the battery pack operation. However, the existing cooling plates have high flow resistance, poor heat exchange capacity, and difficulty in flow distribution, resulting in significant heat loss, and there is room for improvement. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a cooling plate with a simple structure that can reduce the flow resistance within the cooling plate, thereby improving the heat exchange effect of the cooling plate, and can also improve the uniformity of flow distribution, reduce heat loss, and ensure the reliability of the cooling plate in use.

[0005] According to an embodiment of the present invention, the cooling plate includes an inlet channel and an outlet channel, the inlet channel and the outlet channel being spaced apart along a first direction, and a plurality of cooling channels arranged in parallel along a second direction communicating between the inlet channel and the outlet channel, the first direction intersecting the second direction; wherein, the cooling plate is provided with an inlet communicating with the inlet channel and an outlet communicating with the outlet channel, the flow cross-section of the inlet channel being configured to gradually increase from the inlet along the second direction, and / or the flow cross-section of the outlet channel being configured to gradually increase from the outlet along the second direction.

[0006] According to the embodiments of the present invention, the cooling plate, by constructing the flow cross-section of the inlet channel to gradually increase from the inlet along the second direction, can gradually reduce the flow resistance of the liquid in the inlet channel from the inlet along the second direction. Similarly, by constructing the flow cross-section of the outlet channel to gradually increase from the outlet along the second direction, can gradually reduce the flow resistance of the liquid in the outlet channel from the outlet along the second direction. This reduces heat loss, improves the uniformity of flow distribution in each cooling channel, and ensures the consistency of liquid flow velocity in each cooling channel. Consequently, it improves the overall heat exchange effect of the cooling plate, ensures the reliability of the cooling plate, provides better performance, and has a wider range of applications.

[0007] According to some embodiments of the present invention, the width and / or thickness of the inlet channel of the cooling plate are configured to gradually increase from the inlet along the second direction;

[0008] And / or, the width and / or thickness of the outflow channel are configured to gradually increase from the outflow port along the second direction.

[0009] According to some embodiments of the present invention, the minimum width of the inlet channel of the cooling plate is set to L1, and satisfies: 6mm≤L1≤7mm;

[0010] And / or, the maximum width of the inlet channel is set to L2, and satisfies: 17.5mm≤L2≤18.5mm;

[0011] And / or, the minimum width of the outflow channel is set to L3, and satisfies: 6mm≤L3≤7mm;

[0012] And / or, the maximum width of the outflow channel is set to L4, and satisfies: 17.5mm≤L4≤18.5mm.

[0013] According to some embodiments of the present invention, the cooling plate of the inlet channel has a flow-guiding inner wall and a flow-dividing inner wall that are relatively distributed in the width direction, and the flow-dividing inner wall is provided with a plurality of flow-dividing ports that are respectively connected to the plurality of cooling channels in a one-to-one correspondence.

[0014] Wherein, the extension direction of the inner wall of the drainage and the second direction have an included angle α, and satisfy: 9°≤α≤11°;

[0015] And / or, there is an angle b between the extension direction of the inner wall of the drainage and the extension direction of the inner wall of the diversion, and the following condition is met: 14°≤b≤16°.

[0016] According to some embodiments of the present invention, the cooling plate of the plurality of cooling channels is configured to have equal widths, and the thickness of the plurality of cooling channels is configured to gradually increase from the inlet along the second direction;

[0017] And / or, the length of the plurality of cooling channels is set to gradually decrease from the inlet along the second direction.

[0018] According to some embodiments of the present invention, the minimum thickness of the cooling channel of the cooling plate is set as h1, and satisfies: 0.5mm≤h1≤0.7mm;

[0019] And / or, the maximum thickness of the cooling channel is set to h2, and satisfies: 3.3mm≤h2≤3.5mm.

[0020] According to some embodiments of the present invention, the thickness of the cooling plate is configured to gradually increase from the inlet or the outlet along the second direction.

[0021] According to some embodiments of the present invention, the cooling plate has two inlet channels and two outlet channels. The two inlet channels are symmetrically distributed on both sides of the inlet, and the two outlet channels are symmetrically distributed on both sides of the outlet.

[0022] This utility model also proposes a battery pack.

[0023] The battery pack according to an embodiment of the present invention includes the cooling plate described in any of the above claims.

[0024] This utility model also proposes a vehicle.

[0025] The vehicle according to an embodiment of the present invention includes the battery pack described above.

[0026] The vehicle, the battery pack, and the aforementioned cooling plate all have the same advantages over the prior art, which will not be repeated here.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the structure of the cooling plate according to an embodiment of the present utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of the cooling plate according to an embodiment of the present utility model. Figure 2 ;

[0031] Figure 3 This is a partial structural schematic diagram of the cooling plate according to an embodiment of the present utility model;

[0032] Figure 4 This is a partial cross-sectional view of the cooling plate according to an embodiment of the present utility model.

[0033] Figure label:

[0034] Cooling plate 100,

[0035] Inlet channel 1, inner wall for guiding flow 11, inner wall for branching flow 12, inlet 2, cooling channel 3, outlet 4, outlet channel 5. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The following is for reference. Figures 1-4The cooling plate 100 according to the embodiment of the present utility model has a simple structure, can reduce the flow resistance in the cooling plate 100, thereby improving the heat exchange effect of the cooling plate 100, and can also improve the uniformity of flow distribution, reduce heat loss, and ensure the reliability of the cooling plate 100.

[0040] like Figures 1-4 As shown, according to an embodiment of the present invention, a cooling plate 100 includes an inlet channel 1 and an outlet channel 5. The inlet channel 1 and the outlet channel 5 are spaced apart along a first direction. A plurality of cooling channels 3 are connected between the inlet channel 1 and the outlet channel 5 and are arranged in parallel along a second direction. The first direction intersects the second direction. The cooling plate 100 is provided with an inlet 2 connected to the inlet channel 1 and an outlet 4 connected to the outlet channel 5. The flow cross section of the inlet channel 1 is configured to gradually increase from the inlet 2 along the second direction, and / or the flow cross section of the outlet channel 5 is configured to gradually increase from the outlet 4 along the second direction.

[0041] The cooling plate 100 is disposed within the battery pack, and the battery pack typically uses the cooling plate 100 for heat dissipation. The cooling plate 100 is part of the liquid cooling system and can directly contact the battery modules of the battery pack, thereby effectively conducting heat and maintaining the battery pack temperature within a safe range. The coolant in the cooling plate 100 can exchange heat with the battery pack through the cooling plate 100, thus achieving efficient thermal management and ensuring the reliability of the battery pack.

[0042] Specifically, the cooling plate 100 is provided with an inlet channel 1 and an inlet 2, which is connected to the inlet channel 1. Coolant can enter the cooling plate 100 from the inlet 2 and then flow into the inlet channel 1 through the inlet 2. The cooling plate 100 is also provided with an outlet channel 5 and an outlet 4, which is connected to the outlet channel 5. After heat exchange in the cooling plate 100, the coolant can flow into the outlet channel 5 and then flow into the outlet 4. The outlet 4 is connected to the outside, so that the cooled coolant after heat exchange can flow out of the cooling plate 100 through the outlet 4 to ensure the reliability of the cooling plate 100.

[0043] Furthermore, the inlet channel 1 and the outlet channel 5 are spaced apart along the first direction. Multiple cooling channels 3 are provided between the inlet channel 1 and the outlet channel 5. That is, the cooling channels 3 can be set to two, three, or four, etc. The multiple cooling channels 3 are connected between the inlet channel 1 and the outlet channel 5. The number of cooling channels 3 can be set according to the size of the battery module in the battery pack. When the battery module size is large, the number of cooling channels 3 can be increased accordingly. When the battery module size is small, the number of cooling channels 3 can be reduced accordingly. This can ensure the reliability of cooling the battery module and reduce the installation cost.

[0044] Furthermore, multiple cooling channels 3 are distributed in parallel along the second direction between the inlet channel 1 and the outlet channel 5, with the first and second directions intersecting. That is, multiple cooling channels 3 can be connected to the inlet channel 1 in the extension direction of the inlet channel 1, and multiple cooling channels 3 can be connected to the outlet channel 5 in the extension direction of the outlet channel 5, so that the coolant in the inlet channel 1 can flow into the multiple cooling channels 3 respectively, and the coolant after heat exchange in the multiple cooling channels 3 can flow into the outlet channel 5, so as to flow out of the cooling plate 100 through the outlet 4, ensuring the cooling effect of the cooling plate 100 on the battery module at all points.

[0045] In addition, the flow cross-section of the inlet channel 1 is configured to gradually increase from the inlet 2 along the second direction, and / or the flow cross-section of the outlet channel 5 is configured to gradually increase from the outlet 4 along the second direction. Alternatively, the flow cross-section of the inlet channel 1 can be configured to gradually increase from the inlet 2 along the second direction, or the flow cross-section of the outlet channel 5 can be configured to gradually increase from the outlet 4 along the second direction. Alternatively, the flow cross-section of the inlet channel 1 can be configured to gradually increase from the inlet 2 along the second direction, and the flow cross-section of the outlet channel 5 can be configured to gradually increase from the outlet 4 along the second direction at the same time.

[0046] In this embodiment, the flow cross-section of the inlet channel 1 gradually increases from the inlet 2 along the second direction, and the flow cross-section of the outlet channel 5 gradually increases from the outlet 4 along the second direction. This allows the liquid flow resistance in the inlet channel 1 to gradually decrease from the inlet 2 along the second direction, and the liquid flow resistance in the outlet channel 5 to gradually decrease from the outlet 4 along the second direction. This reduces the heat loss of the coolant in the inlet channel 1 and the outlet channel 5, allowing the coolant to flow evenly into each cooling channel 3 and ensuring that the flow rate of the coolant in each cooling channel 3 remains consistent. This ensures the cooling effect of the cooling plate 100 at all points, thereby guaranteeing the reliability of the cooling plate 100.

[0047] According to the embodiment of the present invention, the cooling plate 100, by constructing the flow cross section of the inlet channel 1 to gradually increase from the inlet 2 along the second direction, can gradually reduce the flow resistance of the liquid in the inlet channel 1 from the inlet 2 along the second direction. And by constructing the flow cross section of the outlet channel 5 to gradually increase from the outlet 4 along the second direction, can gradually reduce the flow resistance of the liquid in the outlet channel 5 from the outlet 4 along the second direction. This can reduce heat loss, improve the flow distribution uniformity of each cooling channel 3, and ensure the consistency of the liquid flow velocity in each cooling channel 3. This can improve the overall heat exchange effect of the cooling plate 100, ensure the reliability of the cooling plate 100, improve the performance, and broaden the application range.

[0048] In some embodiments, the width and / or thickness of the inlet channel 1 is configured to gradually increase from the inlet 2 along the second direction. This can be achieved by setting only the width of the inlet channel 1 to gradually increase from the inlet 2 along the second direction, setting only the thickness of the inlet channel 1 to gradually increase from the inlet 2 along the second direction, or setting both the width and thickness of the inlet channel 1 to gradually increase from the inlet 2 along the second direction. In this embodiment, both the width and thickness of the inlet channel 1 are configured to gradually increase from the inlet 2 along the second direction.

[0049] Therefore, the flow cross section of the inlet channel 1 can be constructed to gradually increase from the outlet 4 along the second direction, thereby making the flow resistance of the inlet channel 1 gradually decrease from the inlet 2 along the second direction. This facilitates the delivery of coolant from the inlet channel 1 to the cooling channel 3 away from the inlet 2, ensuring the flow rate of coolant in each cooling channel 3, thereby ensuring the cooling effect of each cooling channel 3 and ensuring the reliability of the cooling plate 100.

[0050] In other embodiments, the width and / or thickness of the outflow channel 5 is configured to gradually increase from the outlet 4 along the second direction. This can be achieved by setting only the width of the outflow channel 5 to gradually increase from the outlet 4 along the second direction, setting only the thickness of the outflow channel 5 to gradually increase from the outlet 4 along the second direction, or setting both the width and thickness of the outflow channel 5 to gradually increase from the outlet 4 along the second direction. In this embodiment, both the width and thickness of the outflow channel 5 are configured to gradually increase from the outlet 4 along the second direction.

[0051] Therefore, the flow cross section of the outflow channel 5 can be constructed to gradually increase from the outlet 4 along the second direction, thereby making the flow resistance of the outflow channel 5 gradually decrease from the outlet 4 along the second direction. This facilitates the cooling channels 3 away from the outlet 4 to transport coolant into the outflow channel 5, ensuring the coolant flow rate in each cooling channel 3, thereby ensuring the cooling effect of each cooling channel 3 and ensuring the reliability of the cooling plate 100.

[0052] In some embodiments, the minimum width of the inlet channel 1 is set to L1, and satisfies: 6mm≤L1≤7mm.

[0053] Specifically, the width of the inlet channel 1 is set to gradually increase from the inlet 2 along the second direction, that is, the minimum width of the inlet channel 1 is the end of the inlet channel 1 near the inlet 2, and the minimum width of the inlet channel 1 is set to L1, and satisfies: 6mm≤L1≤7mm, that is, the minimum width L1 of the inlet channel 1 can be set to 6mm, 6.1mm, 6.2mm, 6.3mm, 6.4mm, 6.5mm, 6.6mm, 6.7mm, 6.8mm, 6.9mm, 7mm, or other values ​​between 6mm and 7mm. In this embodiment, the minimum width L1 of the inlet channel 1 is set to 6.4mm.

[0054] Therefore, setting the minimum width L1 of the inlet channel 1 to satisfy 6mm≤L1≤7mm can avoid the inlet end size of the inlet channel 1 being too small, which would affect the total flow rate of the coolant in the inlet channel 1. It can also avoid the inlet end size of the inlet channel 1 being too large, which would result in the coolant pressure being too low and the coolant delivery distance being insufficient. This ensures both the total flow rate and the delivery distance of the coolant, thereby ensuring the reliability of the inlet channel 1.

[0055] In other embodiments, the maximum width of the inlet channel 1 is set to L2, and satisfies: 17.5mm≤L2≤18.5mm.

[0056] Specifically, the width of the inlet channel 1 is set to gradually increase from the inlet 2 along the second direction, that is, the maximum width of the inlet channel 1 is the end of the inlet channel 1 away from the inlet 2, and the maximum width of the inlet channel 1 is set to L2, and satisfies: 17.5mm≤L2≤18.5mm, that is, the maximum width L2 of the inlet channel 1 can be set to 17.5mm, 17.6mm, 17.7mm, 17.8mm, 17.9mm, 18mm, 18.1mm, 18.2mm, 18.3mm, 18.4mm, 18.5mm, or other values ​​between 17.5mm and 18.5mm. In this embodiment, the maximum width L2 of the inlet channel 1 is set to 18mm.

[0057] Therefore, setting the maximum width L2 of the inlet channel 1 to satisfy 17.5mm≤L2≤18.5mm can avoid the inlet channel 1 being too small at the end away from the inlet 2, resulting in excessive flow resistance, and can also avoid the inlet channel 1 being too large at the end away from the inlet 2, resulting in uneven coolant distribution. This can reduce the flow resistance of the coolant while ensuring the flow rate of the coolant in each cooling channel 3, thereby ensuring the reliability of the inlet channel 1.

[0058] In other embodiments, the minimum width of the outflow channel 5 is set to L3, and satisfies: 6mm≤L3≤7mm.

[0059] Specifically, the width of the outflow channel 5 is set to gradually increase from the outlet 4 along the second direction, that is, the minimum width of the outflow channel 5 is the end of the outflow channel 5 near the outlet 4, and the minimum width of the outflow channel 5 is set to L3, and satisfies: 6mm≤L3≤7mm, that is, the minimum width L3 of the outflow channel 5 can be set to 6mm, 6.1mm, 6.2mm, 6.3mm, 6.4mm, 6.5mm, 6.6mm, 6.7mm, 6.8mm, 6.9mm, 7mm, or other values ​​between 6mm and 7mm. In this embodiment, the minimum width L3 of the outflow channel 5 is set to 6.4mm.

[0060] Therefore, setting the minimum width L3 of the outflow channel 5 to satisfy 6mm≤L3≤7mm can avoid the outflow end size of the outflow channel 5 being too small, which would affect the speed at which the outflow channel 5 delivers the cooled liquid after heat exchange to the outside. It can also avoid the outflow end size of the outflow channel 5 being too large, which would cause the cooled liquid at the end away from the outlet 4 to flow towards the outlet 4 at a slower speed. This ensures that the cooled liquid after heat exchange is delivered to the outlet 4 synchronously, thereby ensuring the reliability of the outflow channel 5.

[0061] In other embodiments, the maximum width of the outflow channel 5 is set to L4, and satisfies: 17.5mm≤L4≤18.5mm.

[0062] Specifically, the width of the outflow channel 5 is set to gradually increase from the outlet 4 along the second direction, that is, the maximum width of the outflow channel 5 is the end of the outflow channel 5 away from the outlet 4, and the maximum width of the outflow channel 5 is set to L4, and satisfies: 17.5mm≤L4≤18.5mm, that is, the maximum width L4 of the outflow channel 5 can be set to 17.5mm, 17.6mm, 17.7mm, 17.8mm, 17.9mm, 18mm, 18.1mm, 18.2mm, 18.3mm, 18.4mm, 18.5mm, or other values ​​between 17.5mm and 18.5mm. In this embodiment, the maximum width L4 of the outflow channel 5 is set to 18mm.

[0063] Therefore, setting the maximum width L4 of the outflow channel 5 to satisfy 17.5mm≤L4≤18.5mm can avoid the size of the end of the outflow channel 5 away from the outlet 4 being too small, resulting in excessive flow resistance. It can also avoid the size of the end of the outflow channel 5 away from the outlet 4 being too large, resulting in a slower flow velocity of the coolant at the end of the outflow channel 5 away from the outlet 4. This can reduce the flow resistance of the coolant while ensuring the speed at which the outflow channel 5 delivers the heat-exchanged coolant to the outside, thereby ensuring the reliability of the outflow channel 5.

[0064] In some embodiments, the inlet channel 1 has a flow-guiding inner wall 11 and a flow-diverting inner wall 12 that are relatively distributed in the width direction. The flow-diverting inner wall 12 is provided with a plurality of flow-diverting ports that are respectively connected to a plurality of cooling channels 3.

[0065] Specifically, the coolant can enter the inlet channel 1 through the inlet 2, and as... Figure 2 As shown, the inlet channel 1 is provided with a guiding inner wall 11 and a branching inner wall 12. The guiding inner wall 11 and the branching inner wall 12 are distributed relative to each other in the width direction of the inlet channel 1, and the branching inner wall 12 is set close to the cooling channel 3. The guiding inner wall 11 is set to be inclined along the second direction and inclined towards the cooling channel 3, so that when the coolant enters the inlet channel 1, it can flow along the guiding inner wall 11, and the guiding inner wall 11 can guide the coolant along the extension direction of the inlet channel 1, so that the coolant flows away from the inlet 2, and then delivers coolant to each cooling channel 3 respectively.

[0066] Furthermore, the inner wall 12 of the diversion channel is located close to the cooling channel 3, and the inner wall 12 of the diversion channel is provided with multiple diversion ports, that is, the diversion ports can be set to two, three or four, etc. The multiple diversion ports and the multiple cooling channels 3 are connected one-to-one, so that after the inner wall 11 guides the coolant to various places in the inlet channel 1, the coolant can flow into the corresponding cooling channel 3 through the multiple diversion ports, so as to ensure the reliability of delivering coolant to each cooling channel 3.

[0067] In actual setup, the outflow channel 5 can also be provided with a guide inner wall and a branch inner wall. Multiple cooling channels 3 can deliver coolant to the outflow channel 5 through corresponding branch ports, and the coolant in the outflow channel 5 can flow to the outflow port 4 through the guide inner wall, ensuring the reliability of the outflow channel 5.

[0068] Among them, such as Figure 3 As shown, the extension direction of the inner drainage wall 11 and the second direction have an included angle α, which satisfies: 9°≤a≤11°. That is, the included angle α between the extension direction of the inner drainage wall 11 and the second direction can be set to 9°, 9.2°, 9.4°, 9.6°, 9.8°, 10°, 10.2°, 10.4°, 10.6°, 10.8°, 11°, or other angles between 9° and 11°. In this embodiment, the included angle α between the extension direction of the inner drainage wall 11 and the second direction is set to 10°.

[0069] Setting the angle α between the extension direction and the second direction of the inner wall 11 of the inlet to be too large will result in the width of the inlet channel 1 near the inlet 2 being too small, which will increase the flow resistance of the inlet channel 1. On the other hand, setting the angle α between the extension direction and the second direction of the inner wall 11 of the inlet to be too small will affect the flow-guiding effect of the inner wall 11 of the inlet. Therefore, setting the angle α between the extension direction and the second direction of the inner wall 11 of the inlet to be 9°≤a≤11° can ensure the width of the inlet channel 1 while also ensuring the flow-guiding effect of the inner wall 11 of the inlet, thus ensuring the reliability of the inlet channel 1.

[0070] In other embodiments, such as Figure 3 As shown, there is an angle b between the extending direction of the inner wall 11 and the extending direction of the inner wall 12, and the angle b satisfies: 14°≤b≤16°. That is, the angle b between the extending direction of the inner wall 11 and the extending direction of the inner wall 12 can be set to 14°, 14.2°, 14.4°, 14.6°, 14.8°, 15°, 15.2°, 15.4°, 15.6°, 15.8°, 16°, or other angles between 14° and 16°. In this embodiment, the angle b between the extending direction of the inner wall 11 and the extending direction of the inner wall 12 can be set to 15°.

[0071] Setting the angle b between the extending directions of the inner wall 11 and the inner wall 12 of the diversion channel to be too small will result in an insufficient width of the inlet channel 1 near the inlet 2, thus increasing the flow resistance of the inlet channel 1. Conversely, setting the angle b between the extending directions of the inner wall 11 and the inner wall 12 of the diversion channel to be too large will affect the flow guiding effect of the inner wall 11. Therefore, setting the angle b between the extending directions of the inner wall 11 and the inner wall 12 of the diversion channel to satisfy 14°≤b≤16° ensures both the width of the inlet channel 1 and the flow guiding effect of the inner wall 11, guaranteeing the reliability of the inlet channel 1. The outlet channel 5 can be configured to be the same as the inlet channel 1.

[0072] In some embodiments, the widths of the plurality of cooling channels 3 are configured to be equal, and the thickness of the plurality of cooling channels 3 is configured to gradually increase from the inlet 2 along the second direction.

[0073] Specifically, multiple cooling channels 3 are configured, and these multiple cooling channels 3 are distributed in parallel along the second direction between the inlet channel 1 and the outlet channel 5, and as shown in the figure. Figure 4 As shown, the widths of the multiple cooling channels 3 are equal, and the thickness of the multiple cooling channels 3 is set to gradually increase from the inlet 2 along the second direction. That is, the flow cross-section of the multiple cooling channels 3 is set to gradually increase from the inlet 2 along the second direction, thereby making the flow resistance in the multiple cooling channels 3 gradually decrease from the inlet 2 along the second direction.

[0074] Therefore, when the coolant flows into the inlet channel 1, the flow resistance at the end of the inlet channel 1 away from the inlet 2 is small, and the flow resistance in the cooling channel 3 away from the inlet 2 is also small. This facilitates the delivery of coolant to the cooling channel 3 on the side away from the inlet 2, thereby ensuring the uniformity of coolant delivery to multiple cooling channels 3, ensuring the cooling effect of each cooling channel 3, and thus improving the performance of the cooling plate 100.

[0075] In other embodiments, the length of the plurality of cooling channels 3 is set to gradually decrease from the inlet 2 along a second direction.

[0076] Specifically, the flow cross-section of the multiple cooling channels 3 is configured to gradually increase from the inlet 2 along the second direction, so that the flow resistance within the multiple cooling channels 3 gradually decreases from the inlet 2 along the second direction, thereby causing the flow velocity of the coolant within the multiple cooling channels 3 to gradually decrease from the inlet 2 along the second direction, and as... Figures 1-2 As shown, the length of the multiple cooling channels 3 is set to gradually decrease from the inlet 2 along the second direction, which can ensure the consistency of the flow time of the coolant in each cooling channel 3, and thus ensure that the heat exchange time of the coolant in each cooling channel 3 is the same, so as to ensure the consistency of the heat exchange effect of each cooling channel 3, thereby ensuring the cooling effect at all parts of the cooling plate 100 and improving the reliability of the cooling plate 100.

[0077] In some embodiments, the minimum thickness of the cooling channel 3 is set to h1, and satisfies: 0.5mm≤h1≤0.7mm.

[0078] Specifically, the thickness of the multiple cooling channels 3 is set to gradually increase from the inlet 2 along the second direction, that is, the thickness of the cooling channel 3 near the inlet 2 is the smallest, such as... Figure 4 As shown, the minimum thickness of the cooling channel 3 is set to h1, and satisfies: 0.5mm≤h1≤0.7mm. That is, the minimum thickness h1 of the cooling channel 3 can be set to 0.5mm, 0.52mm, 0.54mm, 0.56mm, 0.58mm, 0.6mm, 0.62mm, 0.64mm, 0.66mm, 0.68mm, 0.7mm, or other values ​​between 0.5mm and 0.7mm. In this embodiment, the minimum thickness h1 of the cooling channel 3 is set to 0.6mm.

[0079] Therefore, it is possible to avoid setting the minimum thickness h1 of the cooling channel 3 too small, which would result in excessive flow resistance within the cooling channel 3. It is also possible to avoid setting the minimum thickness h1 of the cooling channel 3 too large, which would result in excessive coolant flow in the cooling channel 3 near the inlet 2, affecting the uniformity of coolant flow in the other cooling channels 3. That is, setting the minimum thickness h1 of the cooling channel 3 to satisfy: 0.5mm≤h1≤0.7mm can reduce the flow resistance of the cooling channel 3 while ensuring the uniformity of coolant flow in each cooling channel 3, so as to ensure the cooling effect of each cooling channel 3.

[0080] In other embodiments, the maximum thickness of the cooling channel 3 is set to h2, and satisfies: 3.3mm≤h2≤3.5mm.

[0081] Specifically, the thickness of the multiple cooling channels 3 is set to gradually increase from the inlet 2 along the second direction, that is, the thickness of the cooling channels 3 furthest from the inlet 2 is the largest, such as... Figure 4 As shown, the maximum thickness of the cooling channel 3 is set to h2, and satisfies: 3.3mm≤h2≤3.5mm. That is, the maximum thickness h2 of the cooling channel 3 can be set to 3.3mm, 3.32mm, 3.34mm, 3.36mm, 3.38mm, 3.4mm, 3.42mm, 3.44mm, 3.46mm, 3.48mm, 3.5mm, or other values ​​between 3.3mm and 3.5mm. In this embodiment, the maximum thickness h2 of the cooling channel 3 is set to 3.45mm.

[0082] Therefore, it is possible to avoid setting the maximum thickness h2 of the cooling channel 3 too small, which would result in excessive flow resistance within the cooling channel 3. It is also possible to avoid setting the maximum thickness h2 of the cooling channel 3 too large, which would result in excessive coolant flow in the cooling channel 3 far from the inlet 2, affecting the uniformity of coolant flow in the other cooling channels 3. That is, setting the maximum thickness h2 of the cooling channel 3 to satisfy: 3.3mm≤h2≤3.5mm can reduce the flow resistance of the cooling channel 3 while ensuring the uniformity of coolant flow in each cooling channel 3, so as to ensure the cooling effect of each cooling channel 3.

[0083] In this embodiment, the spacing between two adjacent cooling channels 3 and the width of each cooling channel 3 are equal, and the spacing between two adjacent cooling channels 3 is set to be greater than the width of the cooling channel 3. In this embodiment, the spacing between two adjacent cooling channels 3 can be set to 7mm, and the width of each cooling channel 3 can be set to 6.4mm, thereby improving the heat exchange rate of the cooling channel 3 and ensuring the heat exchange effect of the cooling channel 3.

[0084] In some embodiments, such as Figure 1As shown, the thickness of the cooling plate 100 is constructed to gradually increase from the inlet 2 or the outlet 4 along the second direction. That is, the thickness of the inlet channel 1 gradually increases from the inlet 2 along the second direction, the thickness of the outlet channel 5 gradually increases from the outlet 4 along the second direction, and the thickness of the multiple cooling channels 3 is also constructed to gradually increase from the inlet 2 or the outlet 4 along the second direction. This makes the flow resistance of the cooling plate 100 closer to the inlet 2 or the outlet 4 larger and the flow resistance of the side farther from the inlet 2 or the outlet 4 smaller. This facilitates the delivery of coolant to the side of the cooling plate 100 away from the inlet 2 or the outlet 4, ensuring the uniformity of coolant throughout the cooling plate 100. This, in turn, ensures the cooling effect of the cooling plate 100 on the battery module and improves the reliability of the cooling plate 100.

[0085] In some embodiments, there are two inlet channels 1 and two outlet channels 5. The two inlet channels 1 are symmetrically distributed on both sides of the inlet port 2, and the two outlet channels 5 are symmetrically distributed on both sides of the outlet port 4.

[0086] Specifically, such as Figures 1-2 As shown, there can be two inlet channels 1, and the two inlet channels 1 can be symmetrically distributed on both sides of the inlet port 2. Both inlet channels 1 are connected to the inlet port 2, so that the inlet port 2 can deliver coolant to the two inlet channels 1 respectively. The two inlet channels 1 can be connected to multiple cooling channels 3 respectively, so that the two inlet channels 1 can deliver coolant to multiple cooling channels 3 respectively, thereby increasing the cooling range of the cooling plate 100 and increasing the speed of delivering coolant to multiple cooling channels 3, thereby improving the reliability of the cooling plate 100.

[0087] And such as Figures 1-2 As shown, the outflow channel 5 can also be configured as two, and the two outflow channels 5 can be symmetrically distributed on both sides of the outlet 4. Both outflow channels 5 are connected to the outlet 4, and multiple cooling channels 3 can be connected to the two outflow channels 5 respectively, so that the coolant in the multiple cooling channels 3 can be transported to the two outflow channels 5 respectively, and the coolant in the two outflow channels 5 can be transported to the outlet 4, so as to flow to the external structure through the outlet 4, thereby improving the transport efficiency and ensuring the cooling effect of the cooling plate 100.

[0088] This utility model also proposes a battery pack.

[0089] The battery pack according to the present invention includes the cooling plate 100 of any of the above.

[0090] According to the embodiment of this utility model, the battery pack is provided with a cooling plate 100 to cool the internal structure of the battery pack, ensuring the reliability of battery pack operation. The cooling plate 100, by constructing the flow cross-section of the inlet channel 1 to gradually increase from the inlet 2 along the second direction, can gradually reduce the flow resistance of the liquid in the inlet channel 1 from the inlet 2 along the second direction. And by constructing the flow cross-section of the outlet channel 5 to gradually increase from the outlet 4 along the second direction, can gradually reduce the flow resistance of the liquid in the outlet channel 5 from the outlet 4 along the second direction. This can reduce heat loss, improve the uniformity of flow distribution in each cooling channel 3, and ensure the consistency of liquid flow velocity in each cooling channel 3. This can improve the overall heat exchange effect of the cooling plate 100, ensure the reliability of the cooling plate 100, improve the performance, and broaden the application range.

[0091] This utility model also proposes a vehicle.

[0092] The vehicle according to an embodiment of the present invention includes the battery pack described above.

[0093] The vehicle according to this utility model embodiment is equipped with a battery pack, which can improve the environmental friendliness of the vehicle during operation. The battery pack is equipped with a cooling plate 100. The cooling plate 100 is configured such that the flow cross-section of the inlet channel 1 gradually increases from the inlet 2 along the second direction, so that the flow resistance of the liquid in the inlet channel 1 gradually decreases from the inlet 2 along the second direction. And by configuring the flow cross-section of the outlet channel 5 to gradually increase from the outlet 4 along the second direction, the flow resistance of the liquid in the outlet channel 5 gradually decreases from the outlet 4 along the second direction. This can reduce heat loss, improve the flow distribution uniformity of each cooling channel 3, and ensure the consistency of the liquid flow velocity in each cooling channel 3. This can improve the overall heat exchange effect of the cooling plate 100, ensure the reliability of the cooling plate 100, improve the performance, and broaden the application range.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cooling plate, characterized in that, The cooling plate includes an inlet channel and an outlet channel, which are spaced apart along a first direction. A plurality of cooling channels are connected between the inlet channel and the outlet channel and are arranged in parallel along a second direction. The first direction intersects the second direction. The cooling plate is provided with an inlet communicating with the inlet channel and an outlet communicating with the outlet channel. The flow cross-section of the inlet channel is configured to gradually increase from the inlet along the second direction, and / or the flow cross-section of the outlet channel is configured to gradually increase from the outlet along the second direction.

2. The cooling plate according to claim 1, characterized in that, The width and / or thickness of the inlet channel are configured to gradually increase from the inlet along the second direction; And / or, the width and / or thickness of the outflow channel are configured to gradually increase from the outflow port along the second direction.

3. The cooling plate according to claim 2, characterized in that, The minimum width of the inlet channel is set to L1, and satisfies: 6mm≤L1≤7mm; And / or, the maximum width of the inlet channel is set to L2, and satisfies: 17.5mm≤L2≤18.5mm; And / or, the minimum width of the outflow channel is set to L3, and satisfies: 6mm≤L3≤7mm; And / or, the maximum width of the outflow channel is set to L4, and satisfies: 17.5mm≤L4≤18.5mm.

4. The cooling plate according to claim 1, characterized in that, The inlet channel has a flow-guiding inner wall and a flow-diverting inner wall that are relatively distributed in the width direction. The flow-diverting inner wall is provided with a plurality of flow-diverting ports that are respectively connected to the plurality of cooling channels one by one. Wherein, the extension direction of the inner wall of the drainage and the second direction have an included angle α, and satisfy: 9°≤α≤11°; And / or, there is an angle b between the extension direction of the inner wall of the drainage and the extension direction of the inner wall of the diversion, and the following condition is met: 14°≤b≤16°.

5. The cooling plate according to claim 1, characterized in that, The widths of the plurality of cooling channels are configured to be equal, and the thickness of the plurality of cooling channels is configured to gradually increase from the inlet along the second direction; And / or, the length of the plurality of cooling channels is set to gradually decrease from the inlet along the second direction.

6. The cooling plate according to claim 1, characterized in that, The minimum thickness of the cooling channel is set to h1, and satisfies: 0.5mm≤h1≤0.7mm; And / or, the maximum thickness of the cooling channel is set to h2, and satisfies: 3.3mm≤h2≤3.5mm.

7. The cooling plate according to claim 1, characterized in that, The thickness of the cooling plate is configured to gradually increase from the inlet or the outlet along the second direction.

8. The cooling plate according to any one of claims 1-7, characterized in that, There are two inlet channels and two outlet channels. The two inlet channels are symmetrically distributed on both sides of the inlet, and the two outlet channels are symmetrically distributed on both sides of the outlet.

9. A battery pack, characterized in that, Includes the cooling plate according to any one of claims 1-8.

10. A vehicle, characterized in that, Includes the battery pack as described in claim 9.

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