Battery cooling plate assembly and thermal management plate assembly

Abstract

The battery cooling plate assembly can include an upper plate, a lower plate, a cooling channel disposed between the upper plate and the lower plate, an inlet port, and an outlet port. The cooling channel can include an inlet channel connected to the inlet port, an outlet channel connected to the outlet port, a branch channel disposed downstream of the inlet channel and configured to split the flow path into a first branch path and a second branch path, a plurality of first branch path channels arranged between the branch channel and the outlet channel, and a plurality of second branch path channels arranged between the branch channel and the outlet channel. The first branch path and the second branch path can converge at the outlet channel.

Description

Technical Field

[0001] This application is based on and claims priority to U.S. Patent Application No. 19 / 048,291, filed with the U.S. Patent and Trademark Office on February 7, 2025, the disclosure of which is incorporated herein by reference in its entirety.

[0002] Various embodiments of this disclosure generally relate to battery cooling plate assemblies for battery cells and battery systems including such battery cooling plate assemblies. Background Technology

[0003] Batteries are increasingly being integrated into a wide range of mobile devices, including smartphones, laptops, electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and energy storage systems (ESS).

[0004] Batteries can generate significant amounts of heat during operation, which can adversely affect performance, lifespan, and safety. Overheating can lead to various problems, including reduced battery capacity, shortened lifespan, and various safety issues.

[0005] Therefore, effective cooling technologies are essential for maintaining optimal operating temperatures, improving battery life, and ensuring safe use. One option for cooling technology could be a cooling plate designed to dissipate heat generated during battery operation.

[0006] Cooling plates prevent overheating and ensure optimal performance. As energy storage demands continue to increase across various applications, particularly in electric vehicles and grid storage systems, the need for more efficient and reliable cooling plate designs has become increasingly important. Summary of the Invention

[0007] Technical issues

[0008] According to certain aspects of this disclosure, a battery cooling plate assembly for a battery cell and a battery system including the battery cooling plate assembly are disclosed.

[0009] The purpose of this disclosure is to provide a battery cooling plate assembly that improves battery performance by using cooling water to remove heat from the battery cell.

[0010] Additional objects and advantages of the disclosed embodiments will be set forth in part in the description which follows, and will be apparent in part from the description, or may be learned by practice of the disclosed embodiments.

[0011] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and not intended to limit the claimed and disclosed embodiments.

[0012] Technical solution

[0013] According to one aspect of this disclosure, a battery cooling plate assembly is provided, comprising: a top plate; a bottom plate; a cooling channel disposed between the top plate and the bottom plate and configured to provide a flow path for coolant; an inlet port connected to the cooling channel and configured to receive coolant; and an outlet port connected to the cooling channel and configured to discharge coolant, wherein the cooling channel includes: an inlet channel connected to the inlet port; an outlet channel connected to the outlet port; a diversion channel disposed downstream of the inlet channel and configured to divide the flow path into a first diversion path and a second diversion path; and a plurality of first diversion path channels disposed between the diversion channel and the outlet channel, wherein the first diversion path channels include a plurality of direct-flow channels. The system includes a first diversion path channel and one or more rerouting first diversion path channels; and a plurality of second diversion path channels disposed between the diversion channel and the outlet channel, wherein the second diversion path channels include a plurality of straight-through second diversion path channels and one or more rerouting second diversion path channels, wherein the first diversion path and the second diversion path converge at the outlet channel, wherein at least one of the straight-through first diversion path channels is substantially parallel to at least one of the straight-through second diversion path channels, and wherein the length of at least one of the straight-through second diversion path channels is longer than the length of the longest straight-through first diversion path channel.

[0014] In an embodiment, when viewed from above, the battery cooling plate assembly may define: an upper portion, a lower portion, and a middle portion between the upper and lower portions; and a left portion, a right portion, and a middle portion between the left and right portions, wherein an inlet port and an inlet channel may be disposed in the upper and left portions, and wherein an outlet port and an outlet channel may be disposed in the lower and left portions.

[0015] In an embodiment, the straight-through first diversion path channel may include a first straight-through first diversion path channel having a first end connected to the diversion channel and a second end opposite to the first end. The straight-through second diversion path channel may include a first straight-through second diversion path channel having a first end connected to the diversion channel and a second end opposite to the first end. The diversion channel, the first straight-through first diversion path channel, and the first straight-through second diversion path channel may be disposed in the middle portion, and the first straight-through first diversion path channel and the first straight-through second diversion path channel may extend along the middle and lower portions, respectively.

[0016] In one embodiment, one or more flow path diversion type first diversion path channels may include a first flow path diversion type first diversion path channel having a first end connected to the second end of a first straight-through type first diversion path channel and a second end opposite to the first end. The first flow path diversion type first diversion path channel may be configured to divert the flow of coolant along a first diversion path at a first predetermined angle. One or more flow path diversion type second diversion path channels may include a first flow path diversion type second diversion path channel having a first end connected to the second end of a first straight-through type second diversion path channel and a second end opposite to the first end. The first flow path diversion type second diversion path channel may be configured to divert the flow of coolant along a second diversion path at a second predetermined angle. The first flow path diversion type first diversion path channel and the first flow path diversion type second diversion path channel may be disposed in the lower portion.

[0017] In the implementation, the first predetermined angle and the second predetermined angle can be in the range of about 120 degrees to about 190 degrees.

[0018] In one embodiment, the second end of the first straight-through type first diversion path channel may be formed into a tapered shape, having a width that gradually decreases toward the first flow path diversion type first diversion path channel, and wherein the second end of the first straight-through type second diversion path channel may be formed into a tapered shape, having a width that gradually decreases toward the first flow path diversion type second diversion path channel.

[0019] In one embodiment, the straight-through first diversion path channel may include a second straight-through first diversion path channel. The second straight-through first diversion path channel has a first end connected to the second end of the first diversion path channel and a second end opposite to the first end. The straight-through second diversion path channel may include a second straight-through second diversion path channel. The second straight-through second diversion path channel has a first end connected to the second end of the first diversion path channel and a second end opposite to the first end. The second straight-through first diversion path channel and the second straight-through second diversion path channel may extend along the lower, middle and upper portions.

[0020] In one embodiment, the shape and size of the battery cooling plate assembly can be configured to receive a first battery cell at the top, a second battery cell at the middle, and a third battery cell at the bottom.

[0021] In one implementation, the diversion channel may define a central axis, wherein the arrangement of the plurality of first diversion path channels and the arrangement of the plurality of second diversion path channels may be asymmetrical with respect to the central axis of the diversion channel.

[0022] In one embodiment, the battery cooling plate assembly may further include a plurality of support protrusions disposed in the cooling channel and extending between the top plate and the bottom plate.

[0023] In one implementation, multiple support protrusions may be arranged in an interlaced pattern along the cooling channels.

[0024] In some implementations, the entry channel may not include any support protrusions.

[0025] In one implementation, the diversion channel may define a central axis, wherein the diversion channel may include a support protrusion disposed on the central axis of the diversion channel.

[0026] In an implementation, the outlet channel may include a first outlet channel connected to one of the first diversion path channels and a second outlet channel connected to one of the second diversion path channels, wherein the first outlet channel and the second outlet channel may have substantially constant widths.

[0027] In an implementation, the angle formed between the first exit channel and the second exit channel can be in the range of about 45 degrees to about 120 degrees.

[0028] In one embodiment, the inlet channel may include a deep recess having a depth greater than that of other portions of the cooling channel, wherein the inlet port may include a first end and a second end, the second end being closer to the cooling channel than the first end, wherein, when viewed from above, the second end of the inlet port may be located above the deep recess of the inlet channel.

[0029] In an implementation, the ratio between the diameter of the inlet port and the depth of the recess can be in the range of about 1.0:0.3 to about 1.0:0.42.

[0030] In an implementation, the shortest distance along the second diversion path can be greater than the shortest distance along the first diversion path.

[0031] In an embodiment, the cooling channel may further include a connector channel disposed between the inlet channel and the branch channel, wherein the width of the connector channel may be narrower than the width of the straight-through first branch path channel.

[0032] In another aspect of this disclosure, a thermal management plate assembly is also provided, comprising: a top plate; a bottom plate; a channel disposed between the top plate and the bottom plate and configured to provide a flow path for a liquid; an inlet port connected to the channel and configured to receive liquid; and an outlet port connected to the channel and configured to discharge liquid, wherein the channel includes: an inlet channel connected to the inlet port; an outlet channel connected to the outlet port; a diversion channel disposed downstream of the inlet channel and upstream of the outlet channel, wherein the diversion channel is configured to divide the flow path into a first diversion path and a second diversion path; and a plurality of first diversion path channels, the plurality of first diversion paths being connected to the inlet port and the outlet port. The channel is disposed between the diversion channel and the outlet channel, wherein the first diversion path channel includes multiple straight-through first diversion path channels and one or more flow path rerouting first diversion path channels; and multiple second diversion path channels are disposed between the diversion channel and the outlet channel, wherein the second diversion path channels include multiple straight-through second diversion path channels and one or more flow path rerouting second diversion path channels, wherein the inlet channel includes a deep recess having a depth greater than the depth of other parts of the channel, wherein the inlet port includes a first end and a second end, the second end being closer to the channel than the first end, wherein, when viewed from the top, the second end of the inlet port is located above the deep recess of the inlet channel.

[0033] Beneficial effects

[0034] The embodiments disclosed herein have the effect of improving battery performance by using cooling water to remove heat from the battery cell.

[0035] However, the effects that can be obtained through this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the following disclosure other technical effects not mentioned herein. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate various exemplary embodiments and, together with the specification, serve to explain the principles of the disclosed embodiments.

[0037] Figure 1a This is a perspective view of a battery cooling plate assembly according to an example of this disclosure. Figure 1b yes Figure 1a Exploded view of the battery cooling plate assembly.

[0038] Figure 2a , Figure 2b and Figure 3 For clarity, the top plate has been omitted. Figure 1a Top view of the battery cooling plate assembly.

[0039] Figure 4a yes Figure 1a An unfolded diagram of the cooling channel distribution channels in the battery cooling plate assembly.

[0040] Figure 4b yes Figure 1a An unfolded diagram of the outlet channel of the cooling channel in the battery cooling plate assembly.

[0041] Figure 4c yes Figure 1a An unfolded diagram of a portion of the cooling channels in the battery cooling plate assembly.

[0042] Figure 4d yes Figure 1a An unfolded diagram of the inlet channel of the cooling channel in the battery cooling plate assembly.

[0043] Figure 4e yes Figure 1a A partial view of the battery cooling plate assembly (right) and an unfolded view of a portion of the top plate of the battery cooling plate assembly (left).

[0044] Figure 4f It is a cut along line 4F-4F. Figure 4e A cross-sectional view of a portion of the battery cooling plate assembly.

[0045] Figure 5 The setting is shown Figure 1a A battery system with battery cells on a battery cooling plate assembly.

[0046] Figure 6aAn example velocity diagram illustrating the velocity variation of coolant flow through a cooling channel of a battery cooling plate assembly according to an example of this disclosure is shown. Figure 6b Example thermal diagrams are shown illustrating temperature changes on battery cells 1, 2, and 3 respectively disposed on the upper, middle, and lower portions of a battery cooling plate assembly according to an example of the present disclosure.

[0047] Figure 7a An example pressure diagram illustrating pressure variation near the inlet channel of a battery cooling plate assembly according to an example of the present disclosure is shown, wherein a deep recess and an inlet extension are provided near the inlet channel. Figure 7b An example pressure diagram illustrating the pressure variation near the inlet channel of a battery cooling plate assembly according to a comparative example is shown, wherein no deep recess or inlet extension is provided near the inlet channel.

[0048] Figure 8a An example temperature graph is shown illustrating the temperature changes of the coolant / cooling channel of a comparative sample 1 and samples 1, 2, and 3 according to the present disclosure.

[0049] Figure 8b and Figure 8c An example temperature graph is shown illustrating the temperature changes of the top plate of a comparison sample 1 and samples 1, 2, and 3 according to the present disclosure. Detailed Implementation

[0050] In general, this disclosure relates to a battery cooling plate assembly for a battery cell and a battery system including the battery cooling plate assembly.

[0051] Various aspects of this disclosure can provide a battery cooling plate assembly that uses a liquid coolant to extract heat from the battery cells to enhance battery performance. The flow channel design of the battery cooling plate assembly can provide a uniform temperature distribution across the plate surface under high heat transfer potential. For example, the battery cooling plate assembly can exchange heat by using an indirect liquid cooling mechanism (a liquid coolant flowing within the cooling channels). The cooling channel design of the battery cooling plate assembly according to the examples of this disclosure can minimize the temperature difference across the battery cooling plate assembly.

[0052] Additionally, battery cooling plate assemblies according to examples of this disclosure may include various features that can keep pressure drop within acceptable limits and allow for better fluid mixing, while providing structural stiffness to the battery cooling plate assembly. For example, aspects of this disclosure may provide a deep recess having a depth greater than other portions of the cooling channels and positioned near the inlet port / inlet channel, which can help reduce pressure drop near the inlet port / inlet channel. Battery cooling plate assemblies according to examples of this disclosure may also include support protrusions in the cooling channels that can increase the structural stiffness of the battery cooling plate assembly to withstand high internal operating pressures and improve coolant mixing, thereby enabling a robust heat transfer process.

[0053] The battery cooling plate assembly according to the examples of this disclosure can also be used as a structural support for the battery pack structure, thereby reducing the need for additional structural components and the overall weight of the battery pack. In this way, several aspects of this disclosure can provide an enhanced battery cooling plate assembly that can provide balanced performance by utilizing uniform temperature distribution and optimal voltage drop across the battery cells, as well as structural support, to contribute to higher energy density, which is critical for large battery applications such as heavy-duty trucks.

[0054] Figure 1a This is a perspective view of a battery cooling plate assembly 100 according to an example of this disclosure. Figure 1b yes Figure 1a An exploded view of the battery cooling plate assembly 100. The battery cooling plate assembly 100 may be configured to reduce or maintain the temperature of one or more battery cells adjacent to the battery cooling plate assembly, for example, by using a coolant circulating in the cooling plate assembly 100.

[0055] In some examples, each battery cell can have a modular design. For example, each battery cell in a battery pack can be a battery module. Each battery module can include multiple battery cells. In other examples, each battery cell can have a module-less design. In this case, each battery cell in a battery pack can include one or more battery cells within the battery pack, for example, without any module packaging / casing between them.

[0056] In some examples, the number of battery cells in each battery cell can range from 2 to 4096. For example, each battery cell may include 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096 battery cells. In other examples, each battery cell may include any other suitable number of battery cells.

[0057] like Figure 1a and Figure 1b As shown, the battery cooling plate assembly 100 may include a top plate 110, a bottom plate 120, a cooling channel 130, an inlet port 101, and an outlet port 105.

[0058] In some examples, the top plate 110 and the bottom plate 120 may be made of metals and alloys, such as aluminum, aluminum alloys, stainless steel, copper, and / or silver. For example, the top plate 110 and the bottom plate 120 may be made of aluminum alloys, following the ANSI / AA (American National Standards Institute / Aluminum Institute) numbering system (e.g., AAYXXX, where Y varies from 1 to 8, and AA represents aluminum alloy). In other examples, the top plate 110 and the bottom plate 120 may be made of any other suitable material (e.g., any material with high thermal conductivity). In some examples, the thickness of the top plate 110 may be in the range of about 1.5 mm to 3.0 mm. In other examples, the top plate 110 may have any other suitable thickness. In some examples, the thickness of the bottom plate 120 may be in the range of about 1.0 mm to 3.0 mm. In other examples, the bottom plate 120 may have any other suitable thickness.

[0059] Cooling channel 130 may be disposed between top plate 110 and bottom plate 120. In some examples, cooling channel 130 may be formed on bottom plate 120. For example, cooling channel 130 may be etched into bottom plate 120 (e.g., by forming grooves in bottom plate 120), and top plate 110 may serve as a top housing for cooling channel 130. Cooling channel 130 provides a flow path for coolant. Examples of coolant may include industrial-grade chemical compounds, such as ethylene glycol, which has a relatively low melting point.

[0060] Inlet port 101 and outlet port 105 can be connected to cooling channel 130. Inlet port 101 can be configured to receive coolant, and outlet port 105 can be configured to discharge coolant. For example, coolant can enter cooling channel 130 via inlet port 101 and exit cooling channel 130 via outlet port 105.

[0061] Figure 2a and Figure 2b This is a top view of the battery cooling plate assembly 100. Figure 2a and Figure 2b For clarity, the top plate 110 is omitted. (See reference...) Figure 1a , Figure 2a and Figure 2b In some examples, the battery cooling plate assembly 100 may extend along a first axis (e.g., the x-axis). The length L of the battery cooling plate assembly 100 in the direction of the first axis is... X0The length can range from approximately 675 mm to approximately 700 mm. In some examples, the battery cooling plate assembly 100 can extend along a second axis (e.g., the y-axis). The length L of the battery cooling plate assembly 100 in the direction of the second axis... Y0 It can be in the range of approximately 700 mm to approximately 750 mm. In some examples, the angle formed between the first axis and the second axis can be in the range of approximately 60 degrees to approximately 120 degrees. In other examples, the angle formed between the first axis and the second axis can have any other suitable value.

[0062] In some examples, the battery cooling plate assembly 100 may extend along a third axis (e.g., the z-axis). The third axis may be perpendicular to the first and second axes. The thickness of the battery cooling plate assembly 100 in the direction of the third axis may range from about 3.0 mm to about 7.0 mm.

[0063] In some examples, the battery cooling plate assembly 100 may define a virtual quadrilateral 150 when viewed from above (e.g., from the third axis). The virtual quadrilateral 150 may be defined as the smallest quadrilateral that can include the entire battery cooling plate assembly 100 (excluding inlet port 101 and outlet port 105). In some examples, the length L of the battery cooling plate assembly 100 in the direction of the first axis... X0 This can refer to the length of the virtual quadrilateral 150 in the direction of the first axis. Similarly, the length L of the battery cooling plate assembly 100 in the direction of the second axis... Y0 It can refer to the length of the virtual quadrilateral 150 in the direction of the second axis.

[0064] The virtual quadrilateral 150 may include an upper portion 151, a lower portion 155, and a middle portion 153 between the upper portion 151 and the lower portion 155. In some examples, the upper portion 151 has a length L in the direction of a second axis (e.g., the y-axis). Y1 It can be L Y0 Approximately 25% to 40%. In other examples, the upper portion 151 can have any other suitable length in the direction of the second axis. In some examples, the middle portion 153 has a length L in the direction of the second axis (e.g., the y-axis). Y2 It can be L Y0 Approximately 25% to 40%. In other examples, the middle portion 153 can have any other suitable length in the direction of the second axis. In some examples, the lower portion 155 has a length L in the direction of the second axis (e.g., the y-axis). Y3 It can be L Y0 Approximately 25% to 40%. In other examples, the lower part 155 may have any other suitable length in the direction of the second axis.

[0065] The virtual quadrilateral 150 may also include a left portion 152, a right portion 156, and a middle portion 154 between the left portion 152 and the right portion 156. In some examples, the length L of the left portion 152 in the direction of a first axis (e.g., the x-axis) is... X1 It can be L X0 Approximately 25% to 50%. In other examples, the left portion 152 can have any other suitable length in the direction of the first axis. In some examples, the length L of the middle portion 154 in the direction of the first axis (e.g., the x-axis) is... X2 It can be L X0 Approximately 20% to 40%. In other examples, the middle portion 154 can have any other suitable length in the direction of the first axis. In some examples, the right portion 156 has a length L in the direction of the first axis (e.g., the x-axis). X3 It can be L X0 Approximately 25% to 40%. In other examples, the right portion 156 may have any other suitable length in the direction of the first axis.

[0066] In some examples, when viewed from above, the upper portion 151, middle portion 153, and / or lower portion 155 may include empty portions 157 not occupied by the battery cooling plate assembly 100. The empty portions of the upper portion 151, middle portion 153, and / or lower portion 155 may be less than 10%, 7%, 5%, or 3% of the upper portion 151, middle portion 153, and / or lower portion 155. Similarly, in some examples, when viewed from above, the left portion 152, middle portion 154, and / or right portion 156 may include empty portions not occupied by the battery cooling plate assembly 100. The empty portions of the left portion 152, middle portion 154, and / or right portion 156 may be less than 10%, 7%, 5%, or 3% of the left portion 152, middle portion 154, and / or right portion 156.

[0067] In some examples, inlet port 101 and / or inlet channel 131-1 may be located in the upper portion 151 and left portion 152. Outlet port 105 and / or outlet channel 131-2 may be located in the lower portion 155 and left portion 152. In some examples, inlet port 101 and outlet port 105 may be located on the left edge portion. In other examples, inlet port 101 and outlet port 105 may be located on any other suitable portion of the battery cooling plate assembly 100 (e.g., upper edge portion, right edge portion, lower edge portion). In some examples, such as Figure 3 As shown, inlet port 101 and outlet port 105 can be located on the same edge portion. In other examples, inlet port 101 and outlet port 105 can be located on different edge portions.

[0068] In some examples, the top plate 110 and / or the bottom plate 120 can be a basic rectangular shape, such as Figure 1a, Figure 1b , Figure 2a and Figure 2b As shown in the diagram. In this case, the virtual quadrilateral 150 may be rectangular in shape. The top plate 110 and / or the bottom plate 120 may include one or more protrusions (when viewed from above) for the areas of the inlet port 101 and / or the outlet port 105.

[0069] Reference Figure 3 In some examples, the cooling aisle 130 may include an inlet aisle 131-1 connected to inlet port 101 and an outlet aisle 131-2 connected to outlet port 105. In some examples, inlet aisle 131-1 may refer to a portion of the cooling aisle 130 within a predetermined distance from inlet port 101. This predetermined distance may be in the range of about 150 mm to about 200 mm. In some examples, outlet aisle 131-2 may refer to a portion of the cooling aisle 130 within a predetermined distance from outlet port 105. This predetermined distance may be in the range of about 170 mm to about 220 mm.

[0070] In some examples, the cooling channel 130 may further include a diversion channel 135 disposed downstream of the inlet channel 131-1 and upstream of the outlet channel 131-2. In some examples, the diversion channel 135 may be disposed only in the middle section 154. In other examples, the diversion channel 135 may be disposed in at least one of the left section 152, the middle section 154, and the right section 156. In some examples, the diversion channel 135 may be disposed only in the upper section 151. In other examples, the diversion channel 135 may be disposed in at least one of the upper section 151, the middle section 153, and the lower section 155.

[0071] Diversion channel 135 can divide the flow path into multiple different diversion paths. (Refer to...) Figure 4a The diversion channel 135 may include: a diversion inlet channel 135-1 configured to receive coolant from the inlet channel 131-1; a plurality of diversion outlet channels configured to discharge coolant; and a diversion main channel 135-2 disposed between the diversion inlet channel 135-1 and the diversion outlet channels.

[0072] In some examples, the main diversion channel 135-2 may be tapered, having a width that increases from the diversion inlet channel 135-1 toward the diversion outlet channel. In some examples, the diversion channel 135 may define a central axis 135. C The diversion channel 135, including the diversion inlet channel 135-1, the diversion main channel 135-2, and the diversion outlet channel, can be positioned relative to the central axis 135. CSymmetry. The middle part 154 can define the central axis 154. C In some examples, the central axis 154 of the middle section 154 C It can be aligned with the central axis 135 of the diversion channel 135 C Coaxial.

[0073] In some examples, the width W of the diversion inlet channel 135-1 SPI The width W of each of the flow outlet channels can be calculated. SPOn Narrower. In other examples, the width W of the diversion inlet channel 135-1 is... SPI The width W of at least one of the flow outlet channels can be [specified]. SPOn Narrower, and equal to or wider than the width W of at least one of the diversion outlet channels. SPOn In some examples, the width W of the diversion outlet channel section... SPOn They can be the same. In other examples, the width W of the diversion outlet channel is... SPOn These can be different from each other. As used herein, the term "width" of a channel can refer to the length of the channel in a direction perpendicular to the flow direction of the liquid / coolant along the channel.

[0074] In some examples, the diversion outlet channel may include a first diversion outlet channel 135-3 and a second diversion outlet channel 135-4. The first diversion outlet channel 135-3 may be configured to discharge a portion of the coolant along a first diversion path. The second diversion outlet channel 135-4 may be configured to discharge a portion of the coolant along a second diversion path. Although only two diversion outlet channels are shown, the diversion channel 135 may include more than two diversion outlet channels (e.g., three, four, five, etc.).

[0075] In some examples, the cooling aisle 130 may include multiple diversion path channels disposed between the diversion channel 135 and the outlet channel 131-2. The cooling aisle 130 may also include multiple diversion path channels between the diversion outlet channel section and the outlet channel 131-2. For example, the cooling aisle 130 may include multiple first diversion path channels between the first diversion outlet channel section 135-3 and the outlet channel 131-2, and multiple second diversion path channels between the second diversion outlet channel section 135-4 and the outlet channel 131-2.

[0076] Each of the diversion path channels may include one or more extended diversion path channels and / or one or more flow path rerouting diversion path channels. For example, the first diversion path channel may include one or more extended first diversion path channels 137-n and / or one or more flow path rerouting first diversion path channels 141-n. Similarly, the second diversion path channel may include one or more extended second diversion path channels 138-n and / or one or more flow path rerouting second diversion path channels 142-n.

[0077] As used herein, the term "elongation" can mean a dimension (e.g., length) that is significantly larger (e.g., at least two, three, four, or more times) than other dimensions (e.g., width or height). The one or more elongated diversion path channels can have a (substantially) straight shape along their length. One or more elongated diversion path channels can be configured to allow coolant to flow substantially directly (or in a straight line) along the respective diversion path without any detours (e.g., changes in flow path / direction). In some examples, the diversion paths may converge at outlet channel 131-2. For example, the first diversion path and the second diversion path may converge at outlet channel 131-2.

[0078] In some examples, at least one of the extended branch path channels from one branch path may be substantially parallel to at least one of the extended branch path channels from another branch path. For example, at least one of the extended first branch path channels (137-n) may be substantially parallel to at least one of the extended second branch path channels (138-n). In some examples, all the extended branch path channels from one branch path may be substantially parallel to all the extended branch path channels from another branch path. For example, as... Figure 3 As shown, all elongated first diversion path channels 137-n can be substantially parallel to all elongated second diversion path channels 138-n.

[0079] In some examples, the length of at least one of the extended diversion path channels from one diversion path can be greater than the length of the longest extended diversion path channel of another diversion path. For example, the length of at least one of the extended second diversion path channels 138-n can be greater than the length of the longest extended first diversion path channel among the extended first diversion path channels 137-n.

[0080] In some examples, such as Figure 3 As shown, the arrangement of the multiple first diversion path channels and the multiple second diversion path channels can be relative to the central axis 135 of the diversion channel 135. C and / or the central axis 154 of the intermediate part 154C Asymmetry. In other examples, the arrangement of multiple first diversion path channels and multiple second diversion path channels may be relative to the central axis 135 of the diversion channel 135. C and / or the central axis 154 of the intermediate part 154 C symmetry.

[0081] In some examples, such as Figure 3 As shown, the shortest distance of a second diversion path channel (e.g., one or more extended second diversion path channels 138-n and one or more flow path rerouting second diversion path channels 142-n) along the second diversion path can be greater than the shortest distance of a first diversion path channel (e.g., one or more extended first diversion path channels 137-n and one or more flow path rerouting first diversion path channels 141-n) along the first diversion path. In other examples, the shortest distance of a second diversion path channel along the second diversion path can be equal to or less than the shortest distance of a first diversion path channel along the first diversion path.

[0082] Reference Figure 3 In some examples, the elongated first diversion path channel 137-n for the first diversion path may include a first elongated first diversion path channel 137-1 having a first end connected to the diversion channel 135 (e.g., the first diversion outlet channel portion 135-3) and a second end opposite to the first end. The elongated second diversion path channel 138-n for the second diversion path may include a first elongated second diversion path channel 138-1 having a first end connected to the diversion channel 135 (e.g., the second diversion outlet channel portion 135-4) and a second end opposite to the first end. As used herein, the term "end" of an object may refer to a terminal segment of the object having a length equal to or less than 10%, 7%, 5%, or 3% of the total length of the object.

[0083] In some examples, the first elongated first diversion path channel 137-1 and / or the first elongated second diversion path channel 138-1 may be provided in at least one of the left portion 152, the middle portion 154, and the right portion 156. For example, as Figure 3 As shown, the first elongated first diversion path channel 137-1 and the first elongated second diversion path channel 138-1 can be disposed in the middle portion 154. In some examples, the first elongated first diversion path channel 137-1 and the first elongated second diversion path channel 138-1 can extend along at least one of the upper portion 151, the middle portion 153, and the lower portion 155. For example, as Figure 3As shown, the first elongated first diversion path channel 137-1 and the first elongated second diversion path channel 138-1 can extend along the middle 153 and the lower 155.

[0084] One or more flow path rerouting type first diversion path channels 141-n and one or more flow path rerouting type second diversion path channels 142-n can be configured to divert the flow of coolant along the respective diversion path at a predetermined angle. In some examples, the predetermined angle can be in the range of about 60 degrees to about 190 degrees. In other examples, the predetermined angle can have any other suitable value.

[0085] In some examples, one or more flow-diversion type first diversion path channels 141-n for the first diversion path may include a first flow-diversion type first diversion path channel 141-1, which has a first end connected to the second end of a first extended type first diversion path channel 137-1 and a second end opposite to the first end. The first flow-diversion type first diversion path channel 141-1 may be configured to divert the flow of coolant along the first diversion path at a first predetermined angle. In some examples, the first predetermined angle may be in the range of about 120 degrees to about 190 degrees. In other examples, the first predetermined angle may have any other suitable value.

[0086] In some examples, the first diversion path channel 141-1 can be located in at least one of the upper part 151, the middle part 153, and the lower part 155. For example, as Figure 3 As shown, the first diversion path channel 141-1 can be located in the lower part 155. In some examples, the first diversion path channel 141-1 can be located in at least one of the left part 152, the middle part 154, and the right part 156. For example, as Figure 3 As shown, the first diversion path channel 141-1 of the first flow path rerouting type can be set in the left part 152 and the middle part 154.

[0087] In some examples, one or more flow-diversion type second diversion path channels 142-n for the second diversion path may include a first flow-diversion type second diversion path channel 142-1, which has a first end connected to the second end of a first extended type second diversion path channel 138-1 and a second end opposite to the first end. The first flow-diversion type second diversion path channel 142-1 may be configured to divert the flow of coolant along the second diversion path at a second predetermined angle. In some examples, the second predetermined angle may be in the range of about 120 degrees to about 190 degrees. In other examples, the second predetermined angle may have any other suitable value.

[0088] In some examples, the first flow path rerouting type second diversion path channel 142-1 can be located in at least one of the upper part 151, the middle part 153, and the lower part 155. For example, as Figure 3 As shown, the first flow path rerouting type second diversion path channel 142-1 can be disposed in the lower part 155. In some examples, the first flow path rerouting type second diversion path channel 142-1 can be disposed in at least one of the left part 152, the middle part 154, and the right part 156. For example, as Figure 3 As shown, the second diversion path channel 142-1 of the first flow path diversion type can be set in the middle part 154 and the right part 156.

[0089] In some examples, the elongated first diversion path channel 137-n may further include a second elongated first diversion path channel 137-2, which has a first end connected to the second end of the first diversion path channel 141-1 and a second end opposite to the first end. The elongated second diversion path channel 138-n may further include a second elongated second diversion path channel 138-2, which has a first end connected to the second end of the first diversion path channel 142-1 and a second end opposite to the first end.

[0090] In some examples, the second elongated first diversion path channel 137-2 and / or the second elongated second diversion path channel 138-2 may be provided in at least one of the left portion 152, the middle portion 154, and the right portion 156. For example, as Figure 3As shown, the second elongated first diversion path channel 137-2 can be disposed in the left portion 152, and the second elongated second diversion path channel 138-2 can be disposed in the right portion 156. In some examples, the second elongated first diversion path channel 137-2 and the second elongated second diversion path channel 138-2 can extend along at least one of the upper portion 151, the middle portion 153, and the lower portion 155. For example, as Figure 3 As shown, the second elongated first diversion path channel 137-2 and the second elongated second diversion path channel 138-2 can extend along the lower part 155, the middle part 153 and the upper part 151.

[0091] In some examples, one or more flow-path diversion type first diversion path channels 141-n for the first diversion path may include a second flow-path diversion type first diversion path channel 141-2, which has a first end connected to a second end of a second extended type first diversion path channel 137-2 and a second end opposite to the first end. The second flow-path diversion type first diversion path channel 141-2 may be configured to divert the flow of coolant along the first diversion path at a third predetermined angle. In some examples, the third predetermined angle may be in the range of about 120 degrees to about 190 degrees. In other examples, the third predetermined angle may have any other suitable value.

[0092] In some examples, the second flow path rerouting type first diversion path channel 141-2 can be located in at least one of the upper part 151, the middle part 153, and the lower part 155. For example, as Figure 3 As shown, the second flow path rerouting type first diversion path channel 141-2 can be disposed in the upper part 151. In some examples, the second flow path rerouting type first diversion path channel 141-2 can be disposed in at least one of the left part 152, the middle part 154, and the right part 156. For example, as Figure 3 As shown, the second flow path rerouting type first diversion path channel 141-2 can be set in the left part 152.

[0093] In some examples, one or more flow-diversion type second diversion path channels 142-n for the second diversion path may include a second flow-diversion type second diversion path channel 142-2 having a first end connected to the second end of the second extended type second diversion path channel 138-2 and a second end opposite to the first end. The second flow-diversion type second diversion path channel 142-2 may be configured to divert the flow of coolant along the second diversion path at a fourth predetermined angle. In some examples, the fourth predetermined angle may be in the range of about 120 degrees to about 190 degrees. In other examples, the fourth predetermined angle may have any other suitable value.

[0094] In some examples, the second diversion path channel 142-2 can be located in at least one of the upper 151, middle 153, and lower 155. For example, as Figure 3 As shown, the second flow path diversion type second diversion path channel 142-2 can be disposed in the upper part 151. In some examples, the second flow path diversion type second diversion path channel 142-2 can be disposed in at least one of the left part 152, the middle part 154, and the right part 156. For example, as Figure 3 As shown, the second diversion path channel 142-2 of the second flow path rerouting type can be set in the right part 156.

[0095] In some examples, the elongated first diversion path channel 137-n may further include a third elongated first diversion path channel 137-3, which has a first end connected to the second end of the second diversion path channel 141-2 and a second end opposite to the first end. The elongated second diversion path channel 138-n may further include a third elongated second diversion path channel 138-3, which has a first end connected to the second end of the second diversion path channel 142-2 and a second end opposite to the first end.

[0096] In some examples, the third elongated first diversion path channel 137-3 and / or the third elongated second diversion path channel 138-3 may be provided in at least one of the left portion 152, the middle portion 154, and the right portion 156. For example, as Figure 3As shown, the third elongated first diversion path channel 137-3 can be disposed in the left portion 152, and the third elongated second diversion path channel 138-3 can be disposed in the right portion 156. In some examples, the third elongated first diversion path channel 137-3 and the third elongated second diversion path channel 138-3 can extend along at least one of the upper portion 151, the middle portion 153, and the lower portion 155. For example, as Figure 3 As shown, the third elongated first diversion path channel 137-3 and the third elongated second diversion path channel 138-3 can extend along the upper part 151, the middle part 153 and the lower part 155.

[0097] In some examples, one or more flow-diversion type second diversion path channels 142-n for the second diversion path may include a third flow-diversion type second diversion path channel 142-3, which has a first end connected to the second end of a third extended type second diversion path channel 138-3 and a second end opposite to the first end. The third flow-diversion type second diversion path channel 142-3 may be configured to divert the flow of coolant along the second diversion path at a fifth predetermined angle. In some examples, the fifth predetermined angle may be in the range of about 60 degrees to about 120 degrees. In other examples, the fifth predetermined angle may have any other suitable value.

[0098] In some examples, the third flow path rerouting type second diversion path channel 142-3 can be located in at least one of the upper part 151, the middle part 153, and the lower part 155. For example, as Figure 3 As shown, the third flow path rerouting type second diversion path channel 142-3 can be disposed in the lower part 155. In some examples, the third flow path rerouting type second diversion path channel 142-3 can be disposed in at least one of the left part 152, the middle part 154, and the right part 156. For example, as Figure 3 As shown, the third flow path diversion type second diversion path channel 142-3 can be set in the right part 156.

[0099] The elongated second diversion path channel 138-n may further include a fourth elongated second diversion path channel 138-4, which has a first end connected to the second end of the third flow path diversion type second diversion path channel 142-3 and a second end opposite to the first end. In some examples, the fourth elongated second diversion path channel 138-4 may extend along at least one of the left portion 152, the middle portion 154, and the right portion 156. For example, as Figure 3As shown, the fourth elongated second diversion path channel 138-4 can extend along the right portion 156, the middle portion 154, and the left portion 152. In some examples, the fourth elongated second diversion path channel 138-4 can be located in at least one of the upper portion 151, the middle portion 153, and the lower portion 155. For example, as Figure 3 As shown, the fourth elongated second diversion path channel 138-4 can be set in the lower part 155.

[0100] In some examples, outlet channel 131-2 may include multiple outlet channels for multiple flow paths, each outlet channel connecting to one of the branch path channels. For example, refer to Figure 4b The outlet channel 131-2 may include a first outlet channel 131-2 connected to one of the first diversion path channels (e.g., the second end of the third extended first diversion path channel 137-3). P1 and a second outlet channel 131-2 connected to one of the second diversion path channels (e.g., the second end of the fourth extended second diversion path channel 138-4). P2 .

[0101] In some examples, the first exit channel 131-2 P1 and / or second exit passage 131-2 P2 It can have a substantially constant width. That is, the first exit channel 131-2 P1 and / or second exit passage 131-2 P2 The width can be substantially uniform along its entire length. In some examples, the first exit channel 131-2 P1 The width can be matched with the second exit channel 131-2 P2 The widths are basically the same. In other examples, the first exit channel 131-2 P1 The width can be matched with the second exit channel 131-2 P2 The widths are different.

[0102] In some examples, the first exit channel 131-2 P1 It can extend along the first direction 191, and the second exit channel 131-2 P2 It can extend along the second direction 192. An angle 193 can be formed between the first direction 191 and the second direction 192. In some examples, the angle 193 formed between the first outlet channel and the second outlet channel can be in the range of about 45 degrees to about 120 degrees. In some examples, the outlet channel 131-2 can be V-shaped. In other examples, the outlet channel 131-2 can have any other suitable shape.

[0103] In some examples, exit channel 131-2 can define virtual line 195, the first exit channel 131-2 P1 Second Exit Channel 131-2 P2 They can converge at virtual line 195. In some examples, exit port 105 can be set on virtual line 195.

[0104] In some examples, the cooling passage 130 may also include one or more connector passages disposed between the inlet passage 131-1 and the diversion passage 135. The one or more connector passages may include one or more elongated connector passages 133-n and one or more flow path diversion connector passages 134-n.

[0105] In some examples, one or more elongated connector channels 133-n may include a first elongated connector channel 133-1. The first elongated connector channel 133-1 may have a first end coupled to the inlet channel 131-1 and a second end opposite to the first end. In some examples, the first elongated connector channel 133-1 may extend along at least one of the left portion 152, the middle portion 154, and the right portion 156. For example, as... Figure 3 As shown, the first elongated connector channel 133-1 can extend along the left portion 152 and the middle portion 154. In some examples, the first elongated connector channel 133-1 can be located in at least one of the upper portion 151, the middle portion 153, and the lower portion 155. For example, as Figure 3 As shown, the first elongated connector channel 133-1 can be disposed in the upper part 151.

[0106] In some examples, one or more flow path diversion type connector channels 134-n may include a first flow path diversion type connector channel 134-1. The first flow path diversion type connector channel 134-1 may have a first end connected to a second end of a first elongated connector channel 133-1 and a second end connected to a diversion inlet channel portion 135-1. The first flow path diversion type connector channel 134-1 may be configured to divert the flow of coolant along the flow path at a sixth predetermined angle. In some examples, the sixth predetermined angle may be in the range of about 60 degrees to about 120 degrees. In other examples, the sixth predetermined angle may have any other suitable value.

[0107] In some examples, the first flow path redirection type connector channel 134-1 can be disposed in at least one of the left portion 152, the middle portion 154, and the right portion 156. For example, as Figure 3As shown, the first flow path rerouting connector channel 134-1 can be disposed in the middle portion 154. In some examples, the first flow path rerouting connector channel 134-1 can be disposed in at least one of the upper portion 151, the middle portion 153, and the lower portion 155. For example, as Figure 3 As shown, the first flow path rerouting type connector channel 134-1 can be set in the upper part 151.

[0108] In some examples, the width of one or more connector channels may be narrower than the width of at least one of the elongated first shunt path channels 137-n. For example, the width of the first elongated connector channel 133-1 may be narrower than the width of the first elongated first shunt path channel 137-1, the second elongated first shunt path channel 137-2, and / or the third elongated first shunt path channel 137-3.

[0109] In some examples, the width of one or more connector channels may be narrower than the width of at least one of the elongated second shunt path channels 138-n. For example, the width of the first elongated connector channel 133-1 may be narrower than the width of the first elongated second shunt path channel 138-1, the second elongated second shunt path channel 138-2, the third elongated second shunt path channel 138-3, and / or the fourth elongated second shunt path channel 138-4.

[0110] In some examples, inlet channel 131-1 can be defined as any portion of cooling channel 130 located upstream of branch channel 135 (e.g., between the first end and branch channel 135). In this case, one or more elongated connector channels 133-n and one or more flow path redirection connector channels 134-n can be part of inlet channel 131-1.

[0111] In some examples, one or more branch channels may be provided between the first branch path channels. In this case, the first branch path can be further divided into multiple branch paths. In some examples, one or more branch channels may be provided between the second branch path channels. In this case, the second branch path can be further divided into multiple branch paths. In some examples, no branch channels are provided between the inlet channel 131-1 and the branch channel 135 and / or between these connector channels.

[0112] In some examples, the total volume of the cooling channels along the second branch path (e.g., along second branch path channels 138-n, 142-n) can be larger than the total volume of the cooling channels along the first branch path (e.g., along first branch path channels 137-n, 141-n). In other examples, the total volume of the cooling channels along the second branch path can be (substantially) the same as the total volume of the cooling channels along the first branch path. When the distance along the second branch path is greater than the distance along the first branch path, the widths of the channels along the first and second branch paths can be adjusted so that the total volume of the cooling channels along the second branch path becomes (substantially) the same as the total volume of the cooling channels along the first branch path. For example, when the distance along the second branch path is greater than the distance along the first branch path, the first branch path channel can be designed to have a width greater than the width of the second branch path channel.

[0113] In some examples, the cooling channel 130 may include one or more recesses. The recessed portion of the cooling channel may have a narrower width than the other portions of the cooling channel.

[0114] Reference Figure 4c In some examples, the elongated first diversion path channel 137-n and / or the elongated second diversion path channel 138-n may include one or more recesses. For example, the second end of the first elongated first diversion path channel 137-1 may include a recess 181-1, and is tapered to have a width that gradually decreases toward the first diversion path channel 141-1. Therefore, the width W of the portion of the first elongated first diversion path channel 137-1 without recesses is... p1 The narrowest width W at the second end of the first elongated first diversion path channel 137-1 can be compared to the first elongated type. T1 Larger.

[0115] In some examples, such as Figure 4c As shown, the recess 181-1 can be formed only at the second end of the first elongated first diversion path channel 137-1, closer to the central axis 141-1 of the first flow path diversion type first diversion path channel 141-1. C On a portion thereof. In other examples, the recess may be formed on any other suitable portion of the first elongated first diversion path channel 137-1 (e.g., on the second end of the first elongated first diversion path channel 137-1 away from the central axis 141-1). C (on the part).

[0116] In some examples, the first flow path diversion type first diversion path channel 141-1 may include one or more recesses. For example, the first end of the first flow path diversion type first diversion path channel 141-1 that connects to the first elongated type first diversion path channel 137-1 may include a recess (e.g., near its central axis 141-1). C (near a portion thereof). In other examples, the recess may be formed on any other suitable portion of the first diversion path channel 141-1 (e.g., away from its central axis 141-1). C (near part of the area).

[0117] In some examples, the second end of the first elongated second diversion path channel 138-1 may include a recess 182-1 and be tapered to have a width that gradually decreases toward the first diversion type second diversion path channel 142-1. Therefore, the width W of the portion of the first elongated second diversion path channel 138-1 without the recess is... p2 The narrowest width W at the second end of the first elongated second diversion path channel 138-1 can be compared to the first elongated type. T2 Larger.

[0118] In some examples, such as Figure 4c As shown, the recess 182-1 can be formed only at the second end of the first elongated second diversion path channel 138-1, closer to the central axis 142-1 of the first flow path diversion type second diversion path channel 142-1. C On a portion thereof. In other examples, the recess may be formed on any other suitable portion of the first elongated second diversion path channel 138-1 (e.g., on the second end of the first elongated second diversion path channel 138-1 away from the central axis 142-1). C (on the part).

[0119] In some examples, the first flow path rerouting type second diversion path channel 142-1 may include one or more recesses. For example, the first end of the first flow path rerouting type second diversion path channel 142-1 that connects to the first elongated type second diversion path channel 138-1 may include a recess (e.g., near its central axis 142-1). C (near a portion thereof). In other examples, the recess may be formed on any other suitable portion of the first flow path diversion type second diversion path channel 142-1 (e.g., away from its central axis 142-1). C (near part of the area).

[0120] In some examples, other elongated first diversion path channels 137-n, elongated second diversion path channels 138-n, flow path rerouting first diversion path channels 141-n and / or flow path rerouting second diversion path channels 142-n may have one or more recesses, for example, at locations similar to the first elongated first diversion path channels 137-1, the first elongated second diversion path channels 138-1, the first flow path rerouting first diversion path channels 141-1 and / or the first flow path rerouting second diversion path channels 142-1 described above (e.g., at the second end of the elongated first diversion path channels 137-n and / or the elongated second diversion path channels 138-n, and at the first end of the flow path rerouting first diversion path channels 141-n and / or the flow path rerouting second diversion path channels 142-n), and repeated descriptions are omitted. These recesses can be configured to minimize flow stagnation of the coolant in the cooling channel 130 near the diversion corner.

[0121] In some examples, the battery cooling plate assembly 100 may include one or more support protrusions 170 in the cooling channel 130. One or more support protrusions 170 may extend between the top plate 110 and the bottom plate 120.

[0122] In some examples, the support protrusions 170 may be arranged in an interlaced pattern along the cooling channel 130. In other examples, the support protrusions 170 may be arranged in any other suitable pattern (e.g., a grid pattern, a random pattern).

[0123] In some examples, support protrusions may not be formed in at least one of the inlet channel 131-1 and one or more connector channels (e.g., connector channels 133-n, 134-n). In some examples, support protrusions may not be formed in any channel located upstream of the branch channel 135. In some examples, support protrusions may not be formed near the inlet port 101 (e.g., within a predetermined distance from the inlet port 101). This predetermined distance may range from about 450 mm to about 650 mm. In some examples, support protrusions may not be formed near the outlet port 105 (e.g., within a predetermined distance from the outlet port 105). This predetermined distance may range from about 150 mm to about 250 mm. In other examples, one or more support protrusions may be formed in or near the inlet port 101 and / or the outlet port 105.

[0124] In some examples, the diversion channel 135 may include one or more support protrusions. In some examples, at least one of the support protrusions in the diversion channel 135 may be positioned along the central axis 135 of the diversion channel 135. C Up. For example, return to the reference. Figure 4a The main diversion channel 135-2 may be located on the central axis 135 of the diversion channel 135. C One or more support protrusions on the upper part (e.g., in the central part of the main channel section 135-2).

[0125] In some examples, one or more support protrusions 170 may be made of metal, metal alloy, and / or non-metallic materials (e.g., ceramic or carbon-based materials). For example, one or more support protrusions 170 may be made of aluminum alloy. In other examples, one or more support protrusions 170 may be made of any other suitable material (e.g., any other thermally conductive material). In some examples, the cross-sectional area of ​​one or more support protrusions 170 may have a circular shape. In other examples, the cross-sectional area of ​​one or more support protrusions 170 may have any other suitable shape (e.g., square, rectangular, triangular, etc.).

[0126] In some examples, the diameter of one or more support protrusions 170 may range from about 6.0 mm to about 28.0 mm. In other examples, one or more support protrusions 170 may have any other suitable diameter. Although the term "diameter" is used herein for simplicity, it is not required that one or more support protrusions 170 have a circular cross-section. In some examples, the height of one or more support protrusions 170 (e.g., in the direction of the third axis) may range from about 2.0 mm to about 5.0 mm. In other examples, one or more support protrusions 170 may have any other suitable height.

[0127] One or more support protrusions 170 can provide greater structural stiffness, thereby reinforcing the entire battery cooling plate assembly. This also enables the battery cooling plate assembly 100 to withstand high internal operating pressures. In some examples, the battery cooling plate assembly 100 is able to withstand predetermined internal pressures in the range of about 175 kPa to about 200 kPa.

[0128] Additionally, one or more support protrusions 170 can provide more surface area for heat transfer from the top plate 110 / bottom plate 120 to the coolant. Furthermore, one or more support protrusions 170 can be positioned to better mix the coolant and minimize coolant stagnation.

[0129] In some examples, the top plate 110 can be joined to the bottom plate 120 using a laser bonding process. In other examples, the top plate 110 can be joined / attached to the bottom plate 120 using any other suitable joining / welding / attaching process. In some examples, the top plate 110 and the bottom plate 120 can be joined / attached to each other using one or more support protrusions 170. For example, one end of one or more support protrusions 170 can be joined / attached to the top plate 110, and the other end of one or more support protrusions 170 can be joined / attached to the bottom plate 120.

[0130] Reference Figures 4d to 4f In some examples, the inlet channel 131-1 may include a deep recess 121 having a depth greater than that of other portions of the cooling channel. As described above, the cooling channel 130 may be formed on the base plate 120 (e.g., by forming a groove on the base plate 120), and the depth of the cooling channel 130 (without the deep recess 121) may range from about 1.0 mm to about 5.0 mm. In other examples, the cooling channel 130 (without the deep recess 121) may have any other suitable depth value. As used herein, the depth of any portion of the cooling channel 130 may refer to the distance, for example, along a third axis (e.g., the z-axis), between the bottom of a particular portion of the cooling channel 130 and the top plate.

[0131] In some examples, the depth D of the recess 121 w1 The recess 121 can be deeper than the rest of the cooling channel 130 by a first predetermined distance. This first predetermined distance can range from about 1.0 mm to about 3 mm. In some examples, the depth D of the recess 121... w1 It can be in the range of about 3.0 mm to about 6.0 mm. In other examples, the recess 121 can have any other suitable depth value.

[0132] In some examples, the recess 121 may include an inclined portion 123. The inclined portion 123 allows the depth of the cooling channel 130 to gradually change (e.g., decrease) from the recess 121 to other parts of the cooling channel 130. In other examples, the recess 121 may include a stepped portion. This stepped portion allows the depth of the cooling channel 130 to change abruptly from the recess 121 to other parts of the cooling channel 130.

[0133] Reference Figure 4e The top plate 110 may include an aperture 111 in fluid communication with the inlet port 101. The aperture 111 may be disposed between the inlet port 101 and the cooling channel 130. In some examples, the top plate 110 may also include an inlet extension 115. The inlet extension 115 may be a protrusion surrounding the aperture 111 and extending from the aperture 111 in a direction along a third axis (e.g., the z-axis).

[0134] The inlet extension 115 can help extend the shortest distance D between the bottom of the recess 121 and the inlet port 101. W2 For example, returning to the reference. Figure 1b The inlet port 101 may include a first end 102 and a second end 103 closer to the cooling channel 130 than the first end 102. The inlet port 101 (e.g., the second end 103) may be located on top of / inside / around the inlet extension 115. Therefore, the inlet extension 115 may facilitate the extension of the (shortest) distance D between the bottom of the recess 121 and the second end 103 of the inlet port 101. W2 .

[0135] In some examples, the height D of the inlet extension 115 in the direction of the third axis W3 It can be in the range of approximately 3.0 mm to approximately 8.0 mm. In other examples, the inlet extension 115 can have any other suitable height. In some examples, the (shortest) distance D between the bottom of the recess 121 and the inlet port 101 is... W2 It can be in the range of approximately 8.0 mm to approximately 14.0 mm.

[0136] In some examples, such as Figure 4d As shown, when viewed from the top (from the third axis), the second end 103 of the inlet port 101 may be located above the recess 121. The recess 121 and / or the inlet extension 115 may help reduce the pressure drop of the coolant flow near the inlet port 101. In some examples, the pressure drop between the inlet port 101 / inlet channel 131-1 and the outlet port 105 / outlet channel 131-2 may be less than 1.5 kPa, more preferably less than 1.4 kPa, less than 1.3 kPa, or less than 1.2 kPa.

[0137] In some examples, the diameter of the inlet port 101 (e.g., the second end 103) can range from about 10 mm to about 14 mm. In other examples, the inlet port (e.g., the second end 103) can have any other suitable diameter. In some examples, the diameter of the inlet port 101 is related to the depth D of the recess 121. w1 The ratio between them can range from about 1.0:0.2 to about 1.0:0.6, for example, from about 1.0:0.3 to about 1.0:0.42. In some examples, the (shortest) distance D between the diameter of the inlet port 101 and the bottom of the deep recess 121 to the inlet port 101 is... W2The ratio between them can be in the range of about 1.0:0.5 to about 1.0:1.4, for example, about 1.0:0.8 to about 1.0:1.0. Although the term “diameter” is used herein for simplicity, it is not required that the inlet port 101 (and outlet port 105) have a circular cross-section.

[0138] Figure 5 A battery system (e.g., a battery pack assembly) with battery cells is shown disposed on a battery cooling plate assembly 100. In some examples, the shape and size of the battery cooling plate assembly 100 may be configured to receive multiple battery cells on the battery cooling plate assembly 100 to reduce and / or maintain the temperature of the battery cells. For example, as Figure 5 As shown, the shape and size of the battery cooling plate assembly 100 can be configured to receive a first battery cell 210A on the upper part 151, a second battery cell 210B on the middle part 153, and a third battery cell 210C on the lower part 155. Although in Figure 5 Three battery cells are shown, but there may be more or fewer than three battery cells on the battery cooling plate assembly 100 (e.g., 1, 2, 4, 5, 6, 7, 8, 9, 10...).

[0139] In this arrangement, the cooling channels 130 of the battery cooling plate assembly 100 are configured such that the coolant can flow vertically relative to the battery cells 210A to 210C (e.g., along the first elongated first diversion path channel 137-1 and the first elongated second diversion path channel 138-1), so that the initially cooler coolant can pass through the upper, middle and lower sections before the temperature of the coolant rises significantly due to heat from the battery cells 210A to 210C (e.g., exceeding a predetermined temperature value).

[0140] This configuration allows the surface of the top plate or the portions of the cooling channels 130 corresponding to the battery cells 210A to 210C to maintain a more uniform temperature, which can result in a more uniform cooling effect on the battery cells.

[0141] In some examples, the battery cooling plate assembly 100 may be a thermal management plate assembly configured to reduce, increase, and / or maintain the temperature of adjacent thermal management plate assemblies (e.g., the temperature of adjacent devices). The thermal management plate assembly may include a top plate, a bottom plate, a channel disposed between the top and bottom plates and configured to provide a flow path for liquid, an inlet port coupled to the channel and configured to receive liquid, and an outlet port coupled to the channel and configured to discharge liquid. Examples of liquids used for the thermal management plate assembly may include water-based coolants, mineral oils, synthetic fluids, heat transfer fluids, and / or dielectric coolants. The configuration / features / characteristics of the thermal management plate assembly (e.g., the structure of the channel, the material of the components, recesses, support protrusions, deep recesses, inlet extensions, etc.) may be similar to and / or identical to those described above with respect to the battery cooling plate assembly 100, and therefore repeated descriptions are omitted.

[0142] [Example 1]

[0143] Figure 6a This is an example velocity diagram illustrating the change in the velocity of the coolant flow through the cooling channels of a battery cooling plate assembly according to an example of this disclosure. Figure 6b This is an example thermal diagram illustrating the temperature changes (during battery operation) of battery cells 1, 2, and 3 respectively disposed on the upper, middle, and lower parts of a battery cooling plate assembly according to an example of this disclosure. The average temperatures of battery cells 1, 2, and 3 are 43.83°C, 43.76°C, and 48.28°C, respectively.

[0144] like Figure 6a As shown, a depression is formed near the corner where the coolant flow in the cooling channel is diverted, and there is no flow stagnation or the flow stagnation is minimized in the recessed portion of the cooling channel. Furthermore, the "V" shape of the outlet channel reduces flow stagnation at the outlet channel where the first and second diversion paths converge.

[0145] also, Figure 6b The generally uniform temperature distribution across battery cell 1, battery cell 2, and battery cell 3 is shown. In particular, the average temperatures of battery cell 1, battery cell 2, and battery cell 3 are similar, with only small differences between them (e.g., about 4.5°C).

[0146] [Example 2]

[0147] Figure 7a This is an example pressure diagram showing the pressure change near the inlet channel of a battery cooling plate assembly according to an example of the present disclosure, wherein a deep recess 721 and an inlet extension 715 are provided near the inlet channel. Figure 7bThis is an example pressure diagram illustrating the pressure variation near the inlet channel of a battery cooling plate assembly according to a comparative example, wherein no deep recess or inlet extension is provided near the inlet channel. Figure 7a and Figure 7b As shown, when a deep recess and an inlet extension are provided near the inlet channel, a small pressure drop exists near the inlet port / inlet channel.

[0148] [Example 3]

[0149] Figure 8a An example temperature graph illustrating the temperature changes of the coolant / cooling channel in comparative samples 1 and 1, 2, and 3 according to an example of this disclosure is shown. Figure 8b and Figure 8c An example temperature graph illustrating the temperature changes of the top plates of comparative sample 1 and samples 1, 2, and 3 according to an example of this disclosure is shown. Although not shown, three battery cells (e.g., Figure 6b Battery cells 1, 2, and 3 are disposed on the upper, middle, and lower portions of the comparison sample and sample 1, sample 2, and sample 3, respectively, and the temperature is measured when the battery cells are in the test operation. Furthermore, although not shown, deep recesses are formed in sample 1, sample 2, and sample 3 (e.g., in their inlet channels).

[0150] In comparative sample 1, the cooling channel has a series flow path, wherein the coolant first passes through the upper part on which the first battery unit 1 is disposed, then through the middle part on which the second battery unit 2 is disposed, and finally through the lower part on which the third battery unit 3 is disposed. Figure 8a , Figure 8b and Figure 8c As shown, when the coolant first reaches the lower part, the temperature of the coolant is already high, which may cause the third battery cell 3 located in the lower part to have a much higher temperature than the first battery cell 1 and the second battery cell 2.

[0151] like Figure 8a As shown, in samples 1, 2, and 3, the cooling channels allow coolant to flow vertically relative to battery cells 1, 2, and 3 (e.g., along the first elongated first diversion path channel 137-1 and the first elongated second diversion path channel 138-1), such that initially cooler coolant can pass through the upper, middle, and lower portions before the coolant temperature significantly increases due to heat from battery cells 1, 2, and 3 (e.g., exceeding a predetermined temperature value). Compared to comparison sample 1, this allows the surface across the top plate or the portions of the cooling channels corresponding to the battery cells to maintain a more uniform temperature, resulting in a more uniform cooling effect on the battery cells. Figure 8b and Figure 8cAs shown, the difference between the maximum and minimum temperatures on the top plates of samples 1, 2, and 3 (“top plate temperature difference”) is lower than that of comparison sample 1.

[0152] Samples 2 and 3 include depressions formed near the corners where the coolant flow in the cooling channel is diverted. In Sample 3, the outlet channel has a V-shape. It should be noted that the top plate temperature difference of Samples 2 and 3, which have these additional features, is significantly lower than that of Sample 1.

[0153] The terms used above may be interpreted in their broadest and most reasonable manner, even when used in conjunction with the detailed description of certain specific examples of this disclosure. In fact, some terms may even be emphasized above; however, any term intended to be interpreted in any limiting manner will be explicitly and specifically defined in the Detailed Description section. The foregoing general and detailed descriptions are exemplary and explanatory only, and not intended to limit the claimed features.

[0154] As used herein, the terms “width,” “length,” “thickness,” “depth,” “height,” and / or any similar measurement may refer to their average value. As used herein, the terms “comprising,” “including,” “having,” “containing,” or other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but may also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0155] As used herein, “about,” “approximately,” “usually,” and “substantially” should be understood to refer to numbers within a range, such as -10% to +10% of a reference number, preferably -5% to +5%, more preferably -1% to +1%, and most preferably -0.1% to +0.1%. Furthermore, these numerical ranges should be construed as providing support for claims relating to any number or subset of numbers within that range. For example, the disclosure of 1 to 10 should be construed as supporting ranges of 1 to 5, 3 to 6, 1 to 9, 2.5 to 4.7, 2.2 to 9.9, etc.

[0156] It should be noted that the terms “attachable,” “attachable,” “connectable,” and “connectable” used below include directly or indirectly attachable, directly or indirectly attached, directly or indirectly connectable, and directly or indirectly connected, respectively.

[0157] When terms such as “on,” “above,” “below,” “under,” and “beside” are used to describe the positional relationship between two components, one or more components may be located between the two components, unless these terms are used with the terms “immediately” or “directly.” Similarly, as used herein, the terms “attachable,” “connectable,” “connected,” or any similar terms may include directly or indirectly attachable, directly or indirectly connected, and directly or indirectly connected.

[0158] In cases where conventions such as "at least one of A, B, and C" are used, this construction is generally intended to allow those skilled in the art to understand the meaning of the convention (e.g., "a system having at least one of A, B, and C" will include, but is not limited to, systems having a single A, a single B, a single C, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). In cases where conventions such as "at least one of A, B, or C" are used, this construction is generally intended to allow those skilled in the art to understand the meaning of the convention (e.g., "a system having at least one of A, B, or C" will include, but is not limited to, systems having a single A, a single B, a single C, A and B together, A and C together, B and C together, and / or A, B, and C together, etc.). Those skilled in the art will further understand that, unless the context otherwise requires, extractive words and / or phrases generally presenting two or more alternative terms (whether in the specification, claims, or drawings) should be understood to cover the possibility of including one, any, or both of the terms. For example, the phrase “A or B” will generally be understood to include the possibility of “A” or “B” or “A and B”.

[0159] In addition, when describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms may be used to distinguish one component from another, but do not imply or teach the nature, order, sequence, or number of components, unless the context otherwise requires.

[0160] The term “exemplary” is used in the sense of “example” rather than “ideal.” As used herein, the singular forms “a,” “one,” and “the” include plural references unless the context otherwise specifies.

[0161] Other embodiments of the invention disclosed herein will be apparent to those skilled in the art in light of the description and practice thereof. This specification and examples are intended to be illustrative only, and the true scope and spirit of the invention are indicated by the appended claims.

[0162] Industrial applicability

[0163] This disclosure relates to battery cooling plate assemblies and thermal management plate assemblies, and is particularly applicable to industries related to secondary batteries.

Claims

1. A battery cooling plate assembly, the battery cooling plate assembly comprising: roof; Base plate; A cooling channel is disposed between the top plate and the bottom plate and is configured to provide a flow path for the coolant; An inlet port, which is connected to the cooling channel and configured to receive the coolant; as well as An outlet port, connected to the cooling channel and configured to discharge the coolant. The cooling channel includes: An entrance channel, which is connected to the entrance port; An exit channel, which is connected to the exit port; A diversion channel is located downstream of the inlet channel and configured to divide the flow path into a first diversion path and a second diversion path. A plurality of first diversion path channels are provided, wherein the plurality of first diversion path channels are disposed between the diversion channel and the exit channel, wherein the first diversion path channel includes: Multiple direct-access first-branch path channels; and One or more flow path diversion type first branching path channels; and Multiple second diversion path channels are disposed between the diversion channel and the outlet channel, wherein the second diversion path channels include: Multiple straight-through second splitter path channels; and One or more flow path diversion type secondary diversion path channels, The first diversion path and the second diversion path converge at the exit channel. Wherein, at least one of the straight-through first diversion path channels is substantially parallel to at least one of the straight-through second diversion path channels, and Wherein, at least one of the straight-through second diversion path channels is longer than the longest straight-through first diversion path channel.

2. The battery cooling plate assembly according to claim 1, wherein, When viewed from above, the battery cooling plate assembly defines: The upper part, the lower part, and the middle part between the upper part and the lower part; as well as The left portion, the right portion, and the middle portion between the left portion and the right portion. The inlet port and the inlet channel are located in the upper part and the left part, respectively. The outlet port and the outlet channel are located in the lower part and the left part, respectively.

3. The battery cooling plate assembly according to claim 2, in, The straight-through first diversion path channel includes a first straight-through first diversion path channel, which has a first end connected to the diversion channel and a second end opposite to the first end. The straight-through second diversion path channel includes a first straight-through second diversion path channel, which has a first end connected to the diversion channel and a second end opposite to the first end. The diversion channel, the first straight-through first diversion path channel, and the first straight-through second diversion path channel are disposed in the middle section, and The first straight-through first diversion path channel and the first straight-through second diversion path channel extend along the middle and the lower part, respectively.

4. The battery cooling plate assembly according to claim 3, in, The one or more flow path diversion type first diversion path channels include a first flow path diversion type first diversion path channel, the first flow path diversion type first diversion path channel having a first end connected to the second end of the first straight-through type first diversion path channel and a second end opposite to the first end, wherein the first flow path diversion type first diversion path channel is configured to divert the flow of the coolant along the first diversion path at a first predetermined angle. The one or more flow path diversion type second diversion path channels include a first flow path diversion type second diversion path channel, the first flow path diversion type second diversion path channel having a first end connected to the second end of the first straight-through type second diversion path channel and a second end opposite to the first end, wherein the first flow path diversion type second diversion path channel is configured to divert the flow of the coolant along the second diversion path at a second predetermined angle. The first diversion path channel and the second diversion path channel are located in the lower part.

5. The battery cooling plate assembly according to claim 4, wherein, The first predetermined angle and the second predetermined angle are in the range of about 120 degrees to about 190 degrees.

6. The battery cooling plate assembly according to claim 4, in, The second end of the first straight-through first diversion path channel is formed into a tapered shape, having a width that gradually decreases toward the first diversion path channel. The second end of the first straight-through second diversion path channel is formed into a tapered shape, with a width that gradually decreases toward the first diversion second diversion path channel.

7. The battery cooling plate assembly according to claim 4, in, The straight-through first diversion path channel includes a second straight-through first diversion path channel, the second straight-through first diversion path channel having a first end connected to the second end of the first flow path diversion first diversion path channel and a second end opposite to the first end. The straight-through second diversion path channel includes a second straight-through second diversion path channel, which has a first end connected to the second end of the first flow path diversion type second diversion path channel and a second end opposite to the first end. The second straight-through first diversion path channel and the second straight-through second diversion path channel extend along the lower part, the middle part, and the upper part.

8. The battery cooling plate assembly according to claim 2, wherein, The battery cooling plate assembly is shaped and sized to receive a first battery cell at the upper part, a second battery cell at the middle part, and a third battery cell at the lower part.

9. The battery cooling plate assembly according to claim 1, wherein, The diversion channel defines a central axis, wherein the arrangement of the plurality of first diversion path channels and the arrangement of the plurality of second diversion path channels are asymmetrical with respect to the central axis of the diversion channel.

10. The battery cooling plate assembly of claim 1, further comprising a plurality of support protrusions disposed in the cooling channel and extending between the top plate and the bottom plate.

11. The battery cooling plate assembly according to claim 10, wherein, The plurality of support protrusions are arranged in an interlaced pattern along the cooling channels.

12. The battery cooling plate assembly according to claim 10, wherein, The entrance channel does not include any supporting protrusions.

13. The battery cooling plate assembly according to claim 10, wherein, The diversion channel defines a central axis, wherein the diversion channel includes the support protrusion disposed on the central axis of the diversion channel.

14. The battery cooling plate assembly according to claim 1, in, The outlet channel includes a first outlet channel connected to one of the first diversion path channels, and a second outlet channel connected to one of the second diversion path channels. The first and second exit channels have substantially constant widths.

15. The battery cooling plate assembly according to claim 14, wherein, The angle formed between the first exit channel and the second exit channel is in the range of approximately 45 degrees to approximately 120 degrees.

16. The battery cooling plate assembly according to claim 1, in, The inlet channel includes a deep recess that is deeper than other portions of the cooling channel. The inlet port includes a first end and a second end, wherein the second end is closer to the cooling channel than the first end. When viewed from above, the second end of the inlet port is located above the deep recess of the inlet channel.

17. The battery cooling plate assembly according to claim 16, wherein, The ratio between the diameter of the inlet port and the depth of the recess is in the range of about 1.0:0.3 to about 1.0:0.

42.

18. The battery cooling plate assembly according to claim 1, wherein, The shortest distance of the second diversion path channel along the second diversion path is greater than the shortest distance of the first diversion path channel along the first diversion path.

19. The battery cooling plate assembly according to claim 1, wherein, The cooling channel further includes a connector channel disposed between the inlet channel and the branch channel, wherein the width of the connector channel is narrower than the width of the straight-through first branch path channel.

20. A thermal management plate assembly, the thermal management plate assembly comprising: roof; Base plate; A channel disposed between the top plate and the bottom plate and configured to provide a flow path for liquid; An inlet port, which is connected to the channel and configured to receive the liquid; as well as An outlet port, connected to the channel and configured to discharge the liquid. The channel includes: An entrance channel, which is connected to the entrance port; An exit channel, which is connected to the exit port; A diversion channel is disposed downstream of the inlet channel and upstream of the outlet channel, wherein the diversion channel is configured to divide the flow path into a first diversion path and a second diversion path; A plurality of first diversion path channels are provided, wherein the plurality of first diversion path channels are disposed between the diversion channel and the exit channel, wherein the first diversion path channel includes: Multiple direct-access first-branch path channels; and One or more flow path diversion type first branching path channels; and Multiple second diversion path channels are disposed between the diversion channel and the outlet channel, wherein the second diversion path channels include: Multiple straight-through second splitter path channels; and One or more flow path diversion type secondary diversion path channels, The inlet channel includes a deep recess that is deeper than other parts of the channel. The inlet port includes a first end and a second end, wherein the second end is closer to the channel than the first end. When viewed from above, the second end of the inlet port is located above the deep recess of the inlet channel.

Images