Liquid cooling plate, liquid cooling system, battery and electric device

Abstract

The utility model provides a liquid cooling plate, a liquid cooling system, a battery and an electric device, and relates to the technical field of batteries. An empty chamber; a first baffle is arranged between the cooling liquid flow channel and the empty chamber in a spaced mode, the first baffle is provided with a weak part, and when the first baffle is broken, the cooling liquid flow channel is communicated with the empty chamber. The liquid cooling plate can effectively solve the problems that when the liquid cooling plate is extruded, the caliber of the cooling liquid flow channel is compressed, so that the overall volume of the liquid cooling plate is reduced, and the flow resistance of the cooling liquid flowing in the cooling liquid flow channel is increased, and therefore it is guaranteed that the heat exchange effect of the liquid cooling plate cannot be deteriorated due to extrusion.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a liquid cooling plate, a liquid cooling system, a battery, and an electrical device. Background Technology

[0002] The liquid cooling plate in a liquid cooling system is a key component in the battery thermal management system that directly exchanges heat with the battery. Typically, a battery consists of multiple cells, and the liquid cooling system comprises multiple liquid cooling plates, usually positioned between the large surfaces of two adjacent cells. However, if the liquid cooling plate is tightly fitted to the cells on both sides, the cells will gradually expand in volume over time, causing inward pressure on the liquid cooling plate. This compresses the flow channel diameter within the liquid cooling plate, increasing the flow resistance of the coolant and significantly deteriorating its heat exchange efficiency. It can even lead to coolant overflow from the flow channels. Utility Model Content

[0003] This application provides a liquid cooling plate, a liquid cooling system, a battery, and an electrical device, which can overcome the problem that when the liquid cooling plate is squeezed, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a reduction in the volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the flow channel.

[0004] In a first aspect, a liquid cooling plate is provided, comprising: a coolant flow channel; and a cavity; wherein a first baffle is provided between the coolant flow channel and the cavity, the first baffle having a weak portion, such that when the first baffle breaks, the coolant flow channel and the cavity are connected.

[0005] For example, the thickness of the liquid cooling plate is usually designed to be in the range of [0.5mm, 2mm], so a reinforcing rib can be used as the first baffle in the liquid cooling plate.

[0006] For example, the liquid cooling plate described above can be sandwiched between two adjacent battery cells.

[0007] For example, one large surface of the liquid cooling plate is in close contact with the large surface of a battery cell, and the other large surface of the liquid cooling plate is in close contact with the large surface of another battery cell.

[0008] As the battery cells are used for a longer period of time, their volume gradually expands. Since the liquid cooling plate is sandwiched between two adjacent battery cells, the expansion of the battery cells will exert pressure on the liquid cooling plate, compressing the diameter of the flow channel inside the liquid cooling plate. Because the first baffle has a weak part, when the liquid cooling plate is subjected to a certain pressure, the first baffle will break, so that the cavity and the coolant flow channel (such as the first flow channel part mentioned above) merge into one flow channel, increasing the diameter of part of the coolant flow channel. This reduces the flow resistance of the coolant in the coolant flow channel, ensuring that the flow resistance of the coolant in the flow channel does not increase significantly due to the battery cells squeezing the liquid cooling plate, and ensuring that the heat exchange effect of the liquid cooling plate remains at a high level.

[0009] Based on the above technical solution, when the liquid cooling plate is subjected to a certain amount of force generated by the expansion and compression of the battery cell, the baffle with a weak part between the coolant flow channel and the cavity inside the liquid cooling plate will break, so that the coolant flow channel is connected to the cavity. This increases the overall diameter of the coolant flow channel, which can effectively overcome the problem that the diameter of the coolant flow channel is compressed when the liquid cooling plate is squeezed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the coolant flow channel. This ensures that the heat exchange effect of the liquid cooling plate will not deteriorate due to compression.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the first baffle includes a bend that is used to generate stress concentration.

[0011] For example, when the first baffle is subjected to a certain pressure, the stress concentration generated by the bend will concentrate the stress on the bent part of the bend, making the bent part more prone to breakage than other parts.

[0012] Based on the above technical solution, by designing the weak part of the first baffle, the first baffle can be broken when subjected to a certain amount of pressure or after a certain period of time, so that the cavity in the liquid cooling plate can be connected with the coolant flow channel, thus avoiding the problem that the overall volume of the liquid cooling plate decreases and the coolant flow resistance in the coolant flow channel increases when the liquid cooling plate is compressed.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the thickness of the first portion of the first baffle is less than the thickness of the second portion of the first baffle.

[0014] For example, grooves or thinning can be made in the first part of the first baffle, making the first part of the first baffle the weak part mentioned above, which is more likely to break when subjected to a certain pressure.

[0015] Based on the above technical solution, by designing the weak part of the first baffle, the first baffle can be broken when subjected to a certain amount of pressure or after a certain period of time, so that the cavity in the liquid cooling plate can be connected with the coolant flow channel, thus avoiding the problem that the overall volume of the liquid cooling plate decreases and the coolant flow resistance in the coolant flow channel increases when the liquid cooling plate is compressed.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the first part of the first baffle includes a first material, and the second part of the first baffle includes a second material, wherein the strength of the first material is greater than the strength of the second material.

[0017] Since the strength of the first material is greater than that of the second material, the first part of the first baffle is the aforementioned weak point, and it is more likely to break when subjected to a certain pressure.

[0018] Based on the above technical solution, by designing the weak part of the first baffle, the first baffle can be broken when subjected to a certain amount of pressure or after a certain period of time, so that the cavity in the liquid cooling plate can be connected with the coolant flow channel, thus avoiding the problem that the overall volume of the liquid cooling plate decreases and the coolant flow resistance in the coolant flow channel increases when the liquid cooling plate is compressed.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the first baffle includes a third material that is soluble in the coolant.

[0020] Since the third material is soluble in the coolant, as the first baffle continues to be immersed in the coolant, the third material gradually dissolves over time, eventually allowing the first baffle to be completely dissolved, thus enabling the coolant flow channel to connect with the cavity.

[0021] For example, the dissolution rate of the aforementioned third material in the coolant may be related to the expansion rate of the cell, or the cumulative usage time of the cell (or battery), or the remaining service life of the cell (or battery).

[0022] For example, the dissolution rate of the first baffle can be determined by one or more methods such as experience, theoretical derivation, experiment, or simulation, so that the dissolution rate of the first baffle is adapted to the expansion rate of the battery cell. When the battery cell expands to a certain extent (i.e., the remaining lifespan of the battery is reduced to a certain threshold), the first baffle is completely dissolved, thereby making the cavity completely connected with the coolant flow channel, so that the flow resistance of the coolant in the liquid cooling plate flow channel does not decrease significantly.

[0023] Based on the above technical solution, by designing the weak part of the first baffle, the first baffle can be broken when subjected to a certain amount of pressure or after a certain period of time, so that the cavity in the liquid cooling plate can be connected with the coolant flow channel, thus avoiding the problem that the overall volume of the liquid cooling plate decreases and the coolant flow resistance in the coolant flow channel increases when the liquid cooling plate is compressed.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, a plurality of first baffles are spaced between the coolant flow channel and the cavity, and the plurality of first baffles have different strengths.

[0025] Based on the above technical solution, multiple first baffles can be broken in a certain order at different times, gradually increasing the volume of the empty chamber that is merged into the coolant flow channel, thereby better controlling the overall volume of the coolant flow channel.

[0026] In conjunction with the first aspect, in some implementations of the first aspect, the first baffle is located at the end of the empty chamber.

[0027] For example, the first baffle located at the end comprises the aforementioned third material.

[0028] Based on the above technical solution, a first baffle is set at the end of the empty chamber. When the first baffle includes a third material soluble in the coolant, the first baffle will gradually crack over time. At the same time, the battery cells on both sides of the liquid cooling plate will gradually expand over time, causing compression on the liquid cooling plate. Since the first baffle at the end of the empty chamber in the liquid cooling plate will gradually dissolve, the degree of openness of the empty chamber is adapted to the force of the battery cell expansion on the liquid cooling plate. When the battery cell expands to a certain extent, the first baffle is completely dissolved, so that the empty chamber is connected to the coolant flow channel, thereby increasing the diameter of part of the flow channel. This can effectively overcome the problem that when the liquid cooling plate is compressed, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the coolant flow channel. This ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared to before compression, thereby ensuring that the heat exchange effect of the liquid cooling plate will not deteriorate due to compression.

[0029] In conjunction with the first aspect, in some implementations of the first aspect, valves are provided at the first and second ends of the empty chamber.

[0030] For example, the opening degree of the valve located at the first or second end of the empty chamber is controllable.

[0031] For example, the valve located at the first end and / or the valve located at the second end are controllable throttle valves.

[0032] For example, the valve at the first end is a controllable throttle valve, and the valve at the second end is a check valve; or, the valve at the second end is a controllable throttle valve, and the valve at the first end is a check valve.

[0033] For example, the first and second ends of the empty chamber are blocked by a first baffle, and the valve is disposed on the first baffle.

[0034] For example, the valve opening of the aforementioned controllable throttle valve is related to the remaining battery life.

[0035] For example, the remaining lifespan of the battery can also be characterized by the cumulative usage time of the battery, or by the state of health (SOH) value of the battery.

[0036] For example, the controllable throttle valve gradually increases its opening as the energizing time accumulates. As the battery cell's usage time increases, the remaining battery life gradually decreases, and the cell's volume gradually expands. Since the liquid cooling plate is sandwiched between two adjacent cells, the cell's expansion exerts pressure on the liquid cooling plate, compressing the flow channel diameter inside the plate. During this process, the controllable throttle valve also gradually increases its opening, allowing coolant to flow into the cavity. When the cell's volume expands to a certain threshold, the controllable throttle valve reaches its maximum opening, completely connecting the cavity with the coolant flow channel. This effectively increases the overall volume of the liquid cooling plate and the diameter of some coolant flow channels, preventing a significant increase in flow resistance.

[0037] For example, when the SOH value is 100%, the battery cells in the battery will not expand under normal circumstances; when the SOH value is 0%, the battery cells in the battery have expanded significantly under normal circumstances, and can exert a large compressive force on the liquid cooling plate. At this time, the opening of the controllable throttle valve can be controlled to reach the maximum opening or close to the maximum opening to avoid a significant decrease in the overall volume of the liquid cooling plate and a significant increase in the flow resistance of the coolant inside the liquid cooling plate.

[0038] For example, the relationship between the valve opening of a controllable throttle valve and the cumulative usage time of the battery cell or the remaining service life of the battery can be determined through one or more methods such as experience, theoretical derivation, experimentation, or simulation.

[0039] Based on the above technical solution, a valve can be installed at the end of the internal cavity of the liquid cooling plate. The valve opening is controlled to gradually open as the battery cell's cumulative usage time increases, so that the opening degree of the cavity adapts to the squeezing force of the battery cell expansion on the liquid cooling plate. When the battery cell expands to a certain extent, the valve opening reaches its maximum, allowing the cavity to connect with the coolant flow channel, thereby increasing the diameter of this flow channel and thus increasing the overall coolant volume of the liquid cooling plate. This effectively overcomes the problem that when the liquid cooling plate is squeezed, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the flow channel. It ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared to before squeezing, thus ensuring that the heat exchange effect of the liquid cooling plate does not deteriorate due to squeezing.

[0040] In conjunction with the first aspect, in some implementations of the first aspect, a second baffle is provided between the coolant flow channel and the cavity, the strength of which is greater than that of the first baffle.

[0041] For example, there can be multiple second baffles that separate the coolant flow channel from the cavity.

[0042] Based on the above technical solution, the coolant flow channel can form a loop of a certain shape in the liquid cooling plate, such as a U-shape or an S-shape.

[0043] Secondly, a liquid cooling plate is provided, comprising: a coolant flow channel; a cavity; wherein a first baffle is spaced between the coolant flow channel and the cavity, and the first baffle is movable within the cavity.

[0044] It should be noted that whether the first baffle is raised and lowered within the chamber by a lifting mechanism, or a weak point is incorporated into the first baffle, the purpose of these designs is to expand the original coolant flow channel volume of the liquid-cooled plate. This addresses the problem of reduced coolant flow channel volume and increased flow resistance due to external pressure on the liquid-cooled plate. Therefore, the various liquid-cooled plate structures proposed in this application share a unified inventive concept and can be used to solve the same technical problem.

[0045] Based on the above technical solution, the problem that the diameter of the coolant flow channel is compressed when the liquid cooling plate is squeezed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the coolant flow channel can be effectively overcome, thereby ensuring that the heat exchange effect of the liquid cooling plate will not deteriorate due to compression.

[0046] In conjunction with the second aspect, in some implementations of the second aspect, the aforementioned empty room includes a lifting mechanism whose lifting end is fixed to the first baffle.

[0047] Thirdly, a liquid cooling system is provided, including a liquid cooling plate that may be present in either the first or second aspect described above.

[0048] Fourthly, a battery is provided, comprising a plurality of cells and a liquid cooling system as described in any of the possible implementations of the third aspect above, wherein a liquid cooling plate is sandwiched between two cells.

[0049] Fifthly, an electrical device is provided, including a battery as described in any of the fourth aspects above.

[0050] In conjunction with the fifth aspect, in some implementations of the fifth aspect, the aforementioned electrical device is a new energy vehicle. Attached Figure Description

[0051] Figure 1This is a functional block diagram of the vehicle 100 provided in an embodiment of this application;

[0052] Figure 2 This is a schematic diagram of a solution to prevent battery cells from squeezing the liquid cooling plate;

[0053] Figure 3 This is a schematic diagram of the structure of a liquid cooling plate 300 according to an embodiment of this application;

[0054] Figure 4 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0055] Figure 5 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0056] Figure 6 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0057] Figure 7 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0058] Figure 8 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0059] Figure 9 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0060] Figure 10 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0061] Figure 11 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0062] Figure 12 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0063] Figure 13 This is a flowchart illustrating a control method 1300 proposed in an embodiment of this application;

[0064] Figure 14 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0065] Figure 15 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application;

[0066] Figure 16 This is a flowchart illustrating a control method 1600 proposed in an embodiment of this application;

[0067] Figure 17 This is a schematic block diagram of a control device 1700 provided in an embodiment of this application. Detailed Implementation

[0068] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0069] It should be noted that, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0070] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more, and "at least one" and "one or more" refer to one, two, or more than two. The singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context explicitly indicates otherwise.

[0071] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0072] In the description of the embodiments of this application, the terms "upper," "lower," "left," "right," "inner," "outer," "vertical," and "horizontal," etc., indicate orientations or positional relationships relative to the indicated placement of components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and not to indicate or imply a specific orientation that the device or component must have, or its construction and operation in a specific orientation. They can change accordingly depending on the orientation of the components in the accompanying drawings, and therefore should not be construed as limiting this application. Furthermore, "vertical" in this application is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0073] In the embodiments of this application, the same reference numerals are used to denote the same component or part. For the same part in the embodiments of this application, only one part or component may be labeled with reference numerals in the figures. It should be understood that the reference numerals also apply to other identical parts or components. In addition, the various parts in the figures are not drawn to scale, and the dimensions and sizes of the parts shown in the figures are only exemplary and should not be construed as limiting this application.

[0074] The liquid cooling plate or liquid cooling system provided in this application can be applied to mobile carriers. Mobile carriers in this application can include road vehicles, water vehicles, air vehicles, industrial equipment, agricultural equipment, or entertainment equipment. For example, a mobile carrier can be a vehicle, which is a vehicle in a broad sense, including transportation vehicles (such as commercial vehicles, passenger cars, motorcycles, flying cars, trains, etc.), industrial vehicles (such as forklifts, trailers, tractors, etc.), engineering vehicles (such as excavators, bulldozers, cranes, etc.), agricultural equipment (such as lawnmowers, harvesters, etc.), amusement equipment, toy vehicles, etc. This application does not specifically limit the type of vehicle. Furthermore, a mobile carrier can be an airplane or a ship, which have a need for battery cooling.

[0075] For ease of description, this application will use a smart car as an example for illustration.

[0076] Figure 1 This is a schematic diagram of an application scenario where a liquid cooling plate is installed between battery cells.

[0077] The battery of a smart car consists of multiple cells, see reference. Figure 1As shown, the liquid cooling plate 101 is disposed between two adjacent battery cells (102 and 103), and the liquid cooling plate 101 is sandwiched between battery cells 102 and 103. That is, the left side of the liquid cooling plate 101 is in close contact with the right side of the battery cell 102 (usually the large side of the battery cell), and the right side of the liquid cooling plate 101 is in close contact with the left side of the battery cell 103 (usually the large side of the battery cell).

[0078] As the battery cells are used over time, their volume gradually expands. This expansion of cells 102 and 103 exerts pressure on the interior of the liquid cooling plate 101. The liquid cooling plate 101 contains multiple channels for coolant flow, arranged longitudinally to form a harmonica tube structure. When the liquid cooling plate 101 is subjected to pressure from both sides, the diameter of the channels (i.e., the diameter of the multiple pipes in the harmonica tube structure) is compressed, leading to increased flow resistance of the coolant and even coolant overflow, thus reducing the heat exchange efficiency of the liquid cooling plate.

[0079] Figure 2 This is a schematic diagram of a solution to prevent battery cells from squeezing the liquid cooling plate.

[0080] refer to Figure 2 As shown, to solve the above problems, the existing solution involves reserving a gap 01 inside the liquid cooling plate 101, with coolant flow channels 02 of the liquid cooling plate deployed at both ends of the gap 01, and reinforcing ribs 03 set on the outside of the coolant flow channels 02 to ensure that the coolant flow channels 02 are not over-compressed. Based on this, even if the battery cells 102 and 103 expand and squeeze the liquid cooling plate 101, the reserved gap 01 inside the liquid cooling plate 101 will be compressed first. Since the coolant flow channels 02 of the liquid cooling plate 101 with reinforcing ribs 03 will not be over-compressed, the two sides of the liquid cooling plate 101 will be concave towards the middle due to the compression to absorb the squeezing force generated by the expansion of the battery cells, thereby helping to alleviate the problem of increased flow resistance of the coolant in the flow channels.

[0081] However, the above solution requires reserving a space for each liquid cooling plate. This will reduce the heat exchange efficiency of the liquid cooling plate and occupy too much space in the battery box, reducing the number of battery cells that can be installed in the vehicle, and thus reducing the overall vehicle power.

[0082] In view of this, embodiments of this application propose a liquid cooling plate, a liquid cooling system, a battery, and an electrical device, which can overcome the problem that when the liquid cooling plate is squeezed by the battery cell, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a reduction in the volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the flow channel, thereby ensuring that the heat exchange effect of the liquid cooling plate will not deteriorate due to compression.

[0083] Figure 3This is a schematic diagram of the structure of a liquid cooling plate 300 according to an embodiment of this application. Figure 3 (a) in the figure is a cross-sectional view of the 300mm surface of the liquid cooling plate. The arrows in the figure are used to indicate the direction of coolant flow. Figure 3 (b) is a cross-sectional view of the side of the liquid cooling plate 300; Figure 3 (c) is a three-dimensional view of the liquid cooling plate 300.

[0084] refer to Figure 3 As shown, the liquid cooling plate 300 includes:

[0085] Coolant flow channel 310;

[0086] Empty room 320;

[0087] A first baffle 301 is provided between the coolant flow channel 310 and the empty chamber 320. The first baffle 301 has a weak part. When the first baffle 301 breaks, the coolant flow channel 310 and the empty chamber 320 will be connected.

[0088] In some possible embodiments, the coolant flow channel 310 may be Figure 3 The U-shaped flow channel structure shown (the U-shaped flow channel structure after clockwise rotation, also known as the C-shaped flow channel structure) can also be an S-shaped flow channel structure (or a serpentine flow channel structure).

[0089] In some possible embodiments, reference Figure 3 The U-shaped coolant flow channel 310 shown includes a first flow channel portion 311 and a second flow channel portion 312. The first flow channel portion 311 and the second flow channel portion 312 can be connected by a flow channel connecting portion, for example, based on... Figure 3 As shown, the left end of the first flow channel portion 311 and the left end of the second flow channel portion 312 are connected by the flow channel connecting portion to form a U-shaped flow channel structure. The aforementioned cavity 320 is located between the first flow channel portion 311 and the second flow channel portion 312, and the three are arranged side by side.

[0090] In some possible embodiments, the cooling medium in the liquid cooling plate 300 can be water or a coolant other than water.

[0091] In some possible embodiments, a certain amount of coolant may also be contained in the empty chamber 320 before the first baffle 301 breaks.

[0092] In some possible embodiments, since the liquid cooling plate is very thin, the thickness of the liquid cooling plate is usually designed to be in the range of [0.5mm, 2mm], so a reinforcing rib can be used as the first baffle 301 in the liquid cooling plate 300 proposed in the embodiments of this application.

[0093] In some possible embodiments, the liquid cooling plate 300 described above can be sandwiched between two adjacent battery cells.

[0094] In some possible embodiments, one large surface of the liquid cooling plate 300 is in close contact with the large surface of a battery cell, and the other large surface of the liquid cooling plate 300 is in close contact with the large surface of another battery cell.

[0095] As explained above, as the battery cell's usage time increases, the cell's volume gradually expands. Since the liquid cooling plate 300 is sandwiched between two adjacent battery cells, the expanded battery cell will exert pressure on the liquid cooling plate 300, compressing the diameter of the flow channel inside the liquid cooling plate 300. Because the first baffle 301 has a weak part, when the liquid cooling plate 300 is subjected to a certain pressure, the first baffle 301 will rupture, causing the cavity 320 and the coolant flow channel 310 (such as the first flow channel portion 311 mentioned above) to merge into one flow channel, increasing the diameter of part of the coolant flow channel. This reduces the flow resistance of the coolant in the coolant flow channel 310, ensuring that the flow resistance of the coolant in the flow channel does not increase significantly due to the battery cell squeezing the liquid cooling plate 300, thus ensuring that the heat exchange effect of the liquid cooling plate 300 remains at a high level.

[0096] Based on the above technical solution, when the liquid cooling plate is subjected to a certain amount of force generated by the expansion and compression of the battery cell, the baffle with a weak part between the coolant flow channel and the cavity inside the liquid cooling plate will break, so that the coolant flow channel is connected to the cavity. This increases the overall diameter of the coolant flow channel, which can effectively overcome the problem that the diameter of the coolant flow channel is compressed when the liquid cooling plate is squeezed, resulting in increased flow resistance of the coolant in the coolant flow channel. This ensures that the heat exchange effect of the liquid cooling plate will not deteriorate due to compression.

[0097] In some possible embodiments, the first baffle 301 described above may be a baffle located at the bottom or top of the empty chamber 320.

[0098] In some possible embodiments, the weak portion of the first baffle 301 can be achieved from both a material and structural perspective. For example, for the first baffle 301 located at the bottom or top of the chamber 320, the first baffle 301 may include a bend, which is used to generate stress concentration; when the first baffle 301 is subjected to a certain pressure, the stress concentration generated by the bend will concentrate the stress on the bent portion of the bend, making the bent portion more prone to breakage than other portions. Alternatively, the thickness of the first portion of the first baffle 301 may be less than the thickness of the second portion of the second baffle 302, for example, by providing grooves or thinning the first portion of the first baffle 301, then the first portion of the first baffle 301 is the aforementioned weak portion, which is more prone to breakage when subjected to a certain pressure. Alternatively, the first portion of the first baffle 301 may include a first material, the second portion of the first baffle 301 may include a second material, and the strength of the first material is greater than the strength of the second material, then the first portion of the first baffle 301 is the aforementioned weak portion, which is more prone to breakage when subjected to a certain pressure. Alternatively, the first baffle 301 may include a third material that is soluble in the coolant. As the first baffle 301 is continuously immersed in the coolant, the third material gradually dissolves over time, and eventually the first baffle 301 can be completely dissolved, thereby enabling the coolant flow channel 310 to communicate with the cavity 320.

[0099] In some possible embodiments, the corresponding manufacturing process for the weak part of the baffle can be adopted according to different liquid cooling plate manufacturing process conditions.

[0100] Based on the above technical solutions, various designs for the weak parts of the baffle are provided, making the liquid cooling plate flow channel design more flexible and diverse.

[0101] In some possible embodiments, in the liquid cooling plate 300, the coolant flow channel 310 surrounds the cavity 320. In order to ensure that the circuit of the coolant flow channel 310 in the liquid cooling plate 300 is U-shaped or S-shaped, a second baffle 302 is also provided between the coolant flow channel 310 and the cavity 320. The strength of the second baffle 302 is greater than that of the first baffle 301. The purpose is that the second baffle 302 will not break even if it is subjected to external pressure.

[0102] In some possible embodiments, the first baffle 301 and the second baffle 302 can have different strengths in the following ways: the materials of the first baffle 301 and the second baffle 302 can be different; for example, the material of the first baffle 301 has a lower elongation at break, while the material of the second baffle 302 has a higher elongation at break; or the material of the first baffle 301 is a brittle material or a material that will dissolve spontaneously in the coolant, while the material of the second baffle 302 is a rigid material; or, the shape of the reinforcing rib used as the first baffle 301 can be made into a mountain shape, i.e., a bend (see reference). Figure 3 As shown in (b) of the figure, the shape of the reinforcing rib used as the second baffle 302 can be made into an arc shape (see reference). Figure 3 (as shown in (b)) This is because mountain-shaped reinforcing ribs are more prone to breakage by external forces than arc-shaped reinforcing ribs.

[0103] In some possible embodiments, a reinforcing rib may be used as the second baffle 302 in the liquid cooling plate 300 proposed in the embodiments of this application.

[0104] In some possible embodiments, reference Figure 3 As shown, the first baffle 301 can be located between the empty chamber 320 and the second flow channel portion 312, and correspondingly, the second baffle 302 can be located between the empty chamber 320 and the first flow channel portion 311.

[0105] In some possible embodiments, in Figure 3 In the liquid cooling plate 300 shown, the positions of the first baffle 301 and the second baffle 302 can be interchanged. Then, after the first baffle 301 breaks, the cavity 320 is specifically connected to the first flow channel portion 311.

[0106] Based on the above technical solution, by setting a non-breakable baffle between the empty chamber and the coolant flow channel, the overall coolant flow channel can still have a U-shaped or S-shaped flow channel structure after part of the coolant flow channel is merged with the empty chamber, ensuring that the flow mode of the coolant is not affected.

[0107] In some possible embodiments, reference Figure 3 As shown, when the liquid cooling plate 300 is not subjected to pressure from the battery cell, the first baffle 301 and the second baffle 302 can be recessed (or bent) into the cavity 320 respectively.

[0108] If the first baffle 301 and / or the second baffle 302 bends into the coolant flow channel 310 after the liquid cooling plate 300 is squeezed by the battery cell, part of the space in the coolant flow channel 310 will be occupied by the bent first baffle 301 and / or the second baffle 302. This will cause the diameter of part of the coolant flow channel 310 to become smaller, increasing the flow resistance of the coolant in the flow channel and reducing the heat exchange effect of the coolant.

[0109] Based on the aforementioned structural design where the first baffle 301 and the second baffle 302 can be recessed into the cavity 320, after the liquid cooling plate 300 is compressed by the battery cell, the first baffle 301 and the second baffle 302 will continue to bend into the cavity 320, occupying only a portion of the space in the cavity 320. When the first baffle 301 is not broken, coolant does not need to circulate inside the cavity 320. Therefore, even if the first baffle 301 or the second baffle 302 bends, it will not occupy the flow channel space of the coolant channel 310, i.e., it will not increase the flow resistance of the coolant in the coolant channel 310.

[0110] Based on the above technical solution, the coolant filling volume of each flow channel can be increased as much as possible during the process of the liquid cooling plate being squeezed.

[0111] In some possible embodiments, the above Figure 3 The coolant flow channel 310 shown includes a U-shaped flow channel structure. Furthermore, the coolant flow channel 310 may also include multiple independent flow channel sections, which may not be interconnected. An example of this structure of a liquid cooling plate is given below.

[0112] Figure 4 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Figure 4 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0113] refer to Figure 4 As shown, the coolant flow channel 310 includes a first flow channel portion 311 and a second flow channel portion 312, and the first flow channel portion 311 and the second flow channel portion 312 are parallel to each other and not connected to each other. The inlet and outlet of the first flow channel portion 311 and the second flow channel portion 312 are respectively connected to the water supply pipe of a water pump.

[0114] In some possible embodiments, the liquid cooling plate 300 may include multiple chambers 320, at least one of which may be used to communicate with the coolant flow channel 320, that is, to be separated from the coolant flow channel 320 by the aforementioned first baffle 301. For example, when the liquid cooling plate 300 includes N chambers for communicating with the coolant flow channel 320, the number of the aforementioned first baffles 301 also corresponds to N, where N is a positive integer.

[0115] Figure 5 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Wherein, Figure 5 (a) in the figure is a cross-sectional view of the 300mm liquid cooling plate. Figure 5 (b) is a cross-sectional view of the side of the liquid cooling plate 300.

[0116] In some possible embodiments, the cavity 320 and the coolant flow channel 310 are separated by a first baffle 301, and at least one first baffle 301 may also be provided inside the cavity 320 to divide the internal space of the cavity 320 into two or more cavity portions laterally.

[0117] refer to Figure 5 As shown, the chamber 320 and the coolant flow channel 310 are separated by a first baffle 301A. A first baffle 301B is installed inside the chamber 320, dividing it into upper and lower parts. Therefore, when the pressure on the liquid cooling plate 300 is the first pressure, the first baffle 301A breaks, while the first baffle 301B remains intact. At this time, the lower half of the chamber 320 is connected to the coolant flow channel 310. When the pressure on the liquid cooling plate 300 is the second pressure, which is greater than the first pressure, the first baffle 301B breaks, and the upper half of the chamber 320 is also connected to the coolant flow channel 310.

[0118] In some possible embodiments, reference Figure 5 As shown in (b), the liquid cooling plate 300 may include multiple first baffles 301, and the strength of the multiple first baffles 301 may be different so that the multiple first baffles 301 break in a certain order.

[0119] In some possible embodiments, based on Figure 5 The structure of the shown empty chamber 320 can be considered to include: a first empty chamber 321 and a second empty chamber 322, wherein the first empty chamber 321 and the second empty chamber 322 are arranged side by side and adjacent to each other. For ease of description, the following description focuses on the first empty chamber 321 and the second empty chamber 322.

[0120] by Figure 5 Taking the structure shown as an example, a first baffle 301A is spaced between the second flow channel portion 312 and the second chamber 322 of the coolant flow channel 310, and a first baffle 301B is spaced between the first chamber 321 and the second chamber 322. The strength of the first baffle 301A is less than that of the first baffle 301B. A second baffle 302 is spaced between the first flow channel portion 311 and the first chamber 321. The second baffle 302 does not include a weak part. When the pressure on the liquid cooling plate 300 is the first pressure, the first baffle 301A breaks, while the first baffle 301B does not break. At this time, the second chamber 322 is connected to the coolant flow channel 310. When the pressure on the liquid cooling plate 300 is the second pressure, which is greater than the first pressure, the first baffle 301B breaks. At this time, both the first chamber 321 and the second chamber 322 are connected to the coolant flow channel 310.

[0121] In some possible embodiments, the baffle located between the first chamber 321 and the second chamber 322 may also be the aforementioned second baffle 302, so that the first chamber 321 is not used for the flow of coolant, but is used to further increase the sealing between the first flow channel portion 311 and the second chamber 322, and to form a U-shaped structure with a more obvious drop.

[0122] In the above-described structural example of the liquid cooling plate 300, a liquid cooling plate 300 including a U-shaped flow channel structure is proposed. Of course, the liquid cooling plate 300 may also include multiple liquid cooling plates 300 with sequentially connected U-shaped flow channel structures to form a liquid cooling plate 300 with an S-shaped flow channel structure or a serpentine flow channel structure. The following provides an example of a liquid cooling plate including an S-shaped flow channel structure.

[0123] Figure 6 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Wherein, Figure 6 (a) in the figure is a cross-sectional view of the 300mm liquid cooling plate. Figure 6 (b) is a cross-sectional view of the side of the liquid cooling plate 300.

[0124] Figure 6 The coolant flow channel 310 of the liquid cooling plate 300 shown may include: a first flow channel portion 311, a second flow channel portion 312 and a third flow channel portion 313, and the cavity 320 may include: a first cavity 321, a second cavity 322, a third cavity 323, a fourth cavity 324 and a fifth cavity 325.

[0125] Specifically, the first flow channel section 311 is separated from the first chamber 321 by a second baffle 302, the first chamber 321 is separated from the second chamber 322 by a first baffle 301, the second chamber 322 is separated from the second flow channel section 312 by a first baffle 301, the second flow channel section 312 is separated from the third chamber 323 by a second baffle 302, the third chamber 323 is separated from the third flow channel section 313 by a first baffle 301, the third flow channel section 313 is separated from the fourth chamber 324 by a first baffle 301, and the fourth chamber 324 is separated from the fifth chamber 325 by a first baffle 301.

[0126] In some possible embodiments, the strengths of the plurality of first baffles 301 described above may differ. Based on this, the plurality of first baffles 301 can be arranged in a certain order (see reference...). Figure 6 (as shown in (b)) breaks at different times, gradually increasing the number of empty chambers merged into the coolant flow channel 310, thereby better controlling the overall volume of the coolant flow channel 310.

[0127] Furthermore, even if multiple first baffles 301 break in sequence, the presence of the second baffle 302 can ensure that the coolant flow channel 310 presents an overall S-shaped flow channel structure.

[0128] In some possible embodiments, the second baffle 302 between the first flow channel portion 311 and the first chamber 321 may be recessed into the first chamber 321; the first baffle 301 between the first chamber 321 and the second chamber 322 may be recessed into the first chamber 321; the first baffle 301 between the second chamber 322 and the second flow channel portion 312 may be recessed into the second chamber 322; the second baffle 302 between the second flow channel portion 312 and the third chamber 323 may be recessed into the third chamber 323; the first baffle 301 between the third chamber 323 and the third flow channel portion 313 may be recessed into the third chamber 323; the first baffle 301 between the third flow channel portion 313 and the fourth chamber 324 may be recessed into the fourth chamber 324; and the first baffle 301 between the fourth chamber 324 and the fifth chamber 325 may be recessed into the fifth chamber 325. Based on this, the negative impact on the coolant filling volume of each flow channel can be minimized as much as possible during the compression of the liquid cooling plate.

[0129] In some possible embodiments, the first baffle 301 between the first chamber 321 and the second chamber 322 can be replaced with a second baffle 302, and the first baffle 301 between the third chamber 323 and the third flow channel portion 313 can also be replaced with a second baffle 302. Based on this, the sealing between the first flow channel portion 311 and the second chamber 322, the sealing between the second flow channel portion 312 and the third flow channel portion 313 can be improved, and an S-shaped flow channel structure with a significant drop can be formed, which helps to increase the effective liquid cooling area of ​​the liquid cooling plate 300 and improve the heat dissipation effect of the liquid cooling plate 300.

[0130] Based on the above technical solution, designing the coolant flow channel inside the liquid cooling plate as an S-shaped or serpentine flow channel structure can effectively overcome the problem that the diameter of the flow channel inside the liquid cooling plate is compressed when the liquid cooling plate is squeezed, resulting in an increase in the flow resistance of the coolant in the flow channel. At the same time, it can also increase the effective liquid cooling area of ​​the liquid cooling plate as much as possible, which helps to further increase the heat dissipation effect of the liquid cooling plate.

[0131] Figure 7 This is a schematic diagram of another liquid cooling plate 300 proposed in the embodiments of this application. Figure 7 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0132] refer to Figure 7 As shown, the liquid cooling plate 300 includes:

[0133] Coolant flow channel 310;

[0134] Empty room 320;

[0135] The coolant flow channel 310 and the chamber 320 are separated by a second baffle 302. Furthermore, the first end 3201 and the second end 3202 of the chamber 320 are each provided with a first baffle 301 including a weak portion to seal either the first end 3201 or the second end 3202 of the chamber 320. In this embodiment, the first baffle 301 may include a third material soluble in the coolant, thereby demonstrating that the first baffle 301 has a weak portion.

[0136] refer to Figure 3 As shown, the first baffle 301, which separates the coolant flow channel 310 from the cavity 320, can be arranged laterally to block the top and / or bottom of the cavity 320. (Reference) Figure 7 As shown, the first baffle 301 that separates the coolant flow channel 310 from the cavity 320 can be arranged longitudinally to block the left end (e.g., the first end 3201 mentioned above) and the right end (e.g., the second end 3202 mentioned above) of the cavity 320.

[0137] In some possible embodiments, the dissolution rate of the third material in the coolant may be related to the expansion rate of the cell, or the cumulative usage time of the cell (or battery), or the remaining service life of the cell (or battery).

[0138] As can be seen from the foregoing description, as the battery cell's usage time increases, its remaining lifespan decreases, and its volume gradually expands. The liquid cooling plate 300 is sandwiched between two adjacent battery cells, so the battery cell will exert pressure on the liquid cooling plate 300 after its volume expands, thereby compressing the flow channel diameter inside the liquid cooling plate 300. During this process, the first baffle 301, which is blocking the first end 3201 and the second end 3202 of the empty chamber 320, is in a continuous and slow dissolution process, so that coolant gradually flows into the empty chamber 320 through the first end 3201 and flows out of the empty chamber 320 through the second end 3202. When the cell volume expands to a certain threshold, the first baffle 301 completely dissolves due to prolonged contact with the coolant. At this time, the empty chamber 320 is connected to the coolant flow channel 310, which is equivalent to increasing the diameter of part of the coolant flow channel 310, thereby reducing the flow resistance of the second flow channel 312. This ensures that the overall volume of the liquid cooling plate 300 remains as consistent as possible compared to before it was compressed, thus ensuring that the heat exchange effect of the liquid cooling plate 300 remains at a high level.

[0139] Based on the above technical solution, as the battery cell gradually expands due to accumulated usage time, the first baffles at the first and second ends of the internal cavity of the liquid cooling plate will gradually dissolve due to contact with the coolant. This allows the openness of the cavity to adapt to the squeezing force of the battery cell expansion on the liquid cooling plate. When the battery cell expands to a certain extent, the first baffle is completely dissolved, allowing the cavity to connect with the coolant flow channel. This increases the diameter of part of the flow channel, effectively overcoming the problem that when the liquid cooling plate is squeezed, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the flow channel. This ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared to before the compression, thus ensuring that the heat exchange effect of the liquid cooling plate does not deteriorate due to compression.

[0140] In some possible embodiments, the dissolution rate of the first baffle 301 can be determined by one or more methods such as experience, theoretical derivation, experiment, or simulation, so that the dissolution rate of the first baffle 301 is adapted to the expansion rate of the battery cell. When the battery cell expands to a certain extent (i.e. the remaining lifespan of the battery is reduced to a certain threshold), the first baffle 301 is completely dissolved, thereby making the cavity 320 completely connected with the coolant flow channel 310, so that the flow resistance of the coolant in the flow channel of the liquid cooling plate 300 does not decrease significantly.

[0141] In some possible embodiments, as described above Figure 3 Similar to the liquid cooling plate 300 shown above, Figure 7 When the liquid cooling plate 300 shown is not squeezed by the battery cell, the second baffle 302 can be recessed into the cavity 320 respectively. Based on this, the coolant filling volume of each flow channel can be increased as much as possible during the process of the liquid cooling plate being squeezed.

[0142] Figure 8 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Wherein, Figure 8 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0143] refer to Figure 8 As shown, compared to Figure 7 The structure of the liquid cooling plate 300 shown is as follows: Figure 8 The liquid cooling plate 300 shown includes a first chamber 321 and a second chamber 322, wherein the first chamber 321 and the second chamber 322 are arranged side by side and adjacent to each other.

[0144] In some possible embodiments, the coolant flow channel 310 and the first chamber 321, the first chamber 321 and the second chamber 322, and the coolant flow channel 310 and the second chamber 322 can be separated by the second baffle 302.

[0145] In some possible embodiments, the two ends of the first chamber 321 can be sealed by the first baffle 301, and the two ends of the second chamber 322 can also be sealed by the first baffle 301. Based on this structure, as time accumulates, the first baffle 301 gradually dissolves, and both the first chamber 321 and the second chamber 322 can communicate with the coolant flow channel 310.

[0146] In some possible embodiments, the two ends of the first chamber 321 can be directly sealed with baffles containing materials that are insoluble in the coolant, or the two ends of the second chamber 322 can be directly sealed with baffles containing materials that are insoluble in the coolant, thereby ensuring that the first chamber 321 or the second chamber 322 will not gradually connect with the coolant flow channel 310, thereby forming a U-shaped flow channel structure with a significant drop inside the liquid cooling plate 300.

[0147] In some possible embodiments, the second baffle 302 described above may be recessed into the first cavity 321 or the second cavity 322.

[0148] Figure 9 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Wherein, Figure 9 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0149] Figure 9 The coolant flow channel 310 of the liquid cooling plate 300 shown may include: a first flow channel portion 311, a second flow channel portion 312 and a third flow channel portion 313, and the cavity 320 may include: a first cavity 321, a second cavity 322, a third cavity 323, a fourth cavity 324 and a fifth cavity 325.

[0150] The first flow channel portion 311 and the first chamber 321, the first chamber 321 and the second chamber 322, the second chamber 322 and the second flow channel portion 312, the second flow channel portion 312 and the third chamber 323, the third chamber 323 and the third flow channel portion 313, the third flow channel portion 313 and the fourth chamber 324, and the fourth chamber 324 and the fifth chamber 325 can be separated by the second baffle 302; in addition, the two ends of the first chamber 321 to the fifth chamber 325 can be sealed by the first baffle 301 that is soluble in coolant.

[0151] In some possible embodiments, the dissolution rates of the first baffles 301 used to seal different chambers are different. Based on this, multiple chambers can be connected to the coolant channel 310 in a certain order at different times, thereby better controlling the overall volume of the coolant channel 310.

[0152] In some possible embodiments, the first baffle 301 between the first chamber 321 and the second chamber 322 can be replaced with a second baffle 302, and the first baffle 301 between the third chamber 323 and the third flow channel portion 313 can also be replaced with a second baffle 302. Based on this, the sealing between the first flow channel portion 311 and the second chamber 322, the sealing between the second flow channel portion 312 and the third flow channel portion 313 can be improved, and an S-shaped flow channel structure with a significant drop can be formed, which helps to increase the effective liquid cooling area of ​​the liquid cooling plate 300 and improve the heat dissipation effect of the liquid cooling plate 300.

[0153] In some possible embodiments, the second baffle 302 between the first flow channel portion 311 and the first chamber 321 may be recessed into the first chamber 321; the second baffle 302 between the first chamber 321 and the second chamber 322 may be recessed into the first chamber 321; the second baffle 302 between the second chamber 322 and the second flow channel portion 312 may be recessed into the second chamber 322; the second baffle 302 between the second flow channel portion 312 and the third chamber 323 may be recessed into the third chamber 323; the second baffle 302 between the third chamber 323 and the third flow channel portion 313 may be recessed into the third chamber 323; the second baffle 302 between the third flow channel portion 313 and the fourth chamber 324 may be recessed into the fourth chamber 324; and the second baffle 302 between the fourth chamber 324 and the fifth chamber 325 may be recessed into the fifth chamber 325. Based on this, the coolant filling volume of each flow channel can be increased as much as possible during the compression of the liquid cooling plate.

[0154] Based on the above technical solution, designing the coolant flow channel inside the liquid cooling plate as an S-shaped or serpentine flow channel structure can effectively overcome the problem that the diameter of the flow channel inside the liquid cooling plate is compressed when the liquid cooling plate is squeezed, resulting in an increase in the flow resistance of the coolant in the flow channel. At the same time, it can also increase the effective liquid cooling area of ​​the liquid cooling plate as much as possible, which helps to further increase the heat dissipation effect of the liquid cooling plate.

[0155] Figure 10 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Wherein, Figure 10 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0156] refer to Figure 10 As shown, the liquid cooling plate 300 includes:

[0157] Coolant flow channel 310;

[0158] Empty room 320;

[0159] The coolant flow channel 310 and the chamber 320 are separated by a second baffle 302. In addition, valves 350 are respectively provided at the first end 3201 and the second end 3202 of the chamber 320.

[0160] In some possible embodiments, the first end 3201 of the empty chamber 320 can be blocked by a first baffle 301, and the first baffle 301 is provided with a valve 350. Similarly, the second end 3202 of the empty chamber 320 can also be blocked by a first baffle 301, and the first baffle 301 is also provided with a valve 350. The valve 350 can serve as a weak point in the first baffle 301 because it can penetrate the first baffle 301 to allow coolant to flow through it. The opening degree of the valve 350 can be used to characterize the weakness of the first baffle 301. The valve 350 provided in the first baffle 301 includes a valve with controllable opening, such as a controllable throttle valve.

[0161] In some possible embodiments, the valve located at the first end 3201 and / or the valve located at the second end 3202 is a controllable throttle valve 351.

[0162] In some possible embodiments, the valve located at the first end 3201 is a controllable throttle valve 351, and the valve located at the second end 3202 is a check valve 352; or, the valve located at the second end 3202 is a controllable throttle valve 351, and the valve located at the first end 3201 is a check valve 352.

[0163] In some possible embodiments, the valve opening of the controllable throttle valve 351 described above is related to the remaining battery life.

[0164] In some possible embodiments, the remaining lifespan of the battery can also be characterized by the cumulative usage time of the battery or by the SOH value of the battery.

[0165] For example, the controllable throttle valve 351 can gradually increase its opening degree as the energizing time accumulates. As the battery cell's usage time increases, the remaining battery life gradually decreases, and the cell's volume gradually expands. Since the liquid cooling plate 300 is sandwiched between two adjacent battery cells, the expanding cell exerts pressure on the liquid cooling plate 300, compressing the flow channel diameter inside the liquid cooling plate 300. During this process, the controllable throttle valve 351 also gradually increases its opening degree, allowing coolant to gradually flow into the empty chamber 320. When the cell's volume expands to a certain threshold, the controllable throttle valve 351 reaches its maximum opening degree, completely connecting the empty chamber 320 with the coolant flow channel 310. This effectively increases the overall volume of the liquid cooling plate 300 and the diameter of part of the coolant flow channel 310, preventing a significant increase in the flow resistance of the coolant in the coolant flow channel 310.

[0166] For example, when the SOH value is 100%, it indicates that the battery is in the beginning of life (BOL) state. Under normal circumstances, the cells in the battery will not expand. When the SOH value is 0%, it indicates that the battery is in the end of life (EOL) state. At this time, the expansion volume of the cells in the battery reaches its maximum. However, under normal circumstances, when the SOH value is 70%, the cells in the battery have already expanded significantly and can exert a large compressive force on the liquid cooling plate 300. At this time, the opening of the controllable throttle valve 351 can be controlled to reach the maximum opening or close to the maximum opening to avoid a significant decrease in the overall volume of the liquid cooling plate 300 and a significant increase in the flow resistance of the coolant inside the liquid cooling plate 300.

[0167] In some possible embodiments, the relationship between the valve opening of the controllable throttle valve 351 and the cumulative usage time of the battery cell or the remaining service life of the battery can be determined by one or more methods such as experience, theoretical derivation, experimentation, or simulation.

[0168] In some possible embodiments, the controllable throttle valve 351 described above can be powered and controlled by an electronic control structure, which can be located on the surface (e.g., a large surface) or in the gap of the liquid cooling plate 300 that does not contact the battery cell.

[0169] Based on the above technical solution, a valve can be installed at the end of the internal cavity of the liquid cooling plate. The valve opening is controlled to gradually open as the battery cell's cumulative usage time increases, so that the opening degree of the cavity adapts to the squeezing force of the battery cell expansion on the liquid cooling plate. When the battery cell expands to a certain extent, the valve opening reaches its maximum, allowing the cavity to connect with the coolant flow channel, thereby increasing the diameter of this flow channel and thus increasing the overall coolant volume of the liquid cooling plate. This effectively overcomes the problem that when the liquid cooling plate is squeezed, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the flow channel. It ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared to before squeezing, thus ensuring that the heat exchange effect of the liquid cooling plate does not deteriorate due to squeezing.

[0170] In some possible embodiments, as described above Figure 3 Similar to the liquid cooling plate 300 shown above, Figure 10 When the liquid cooling plate 300 shown is not subjected to pressure from the battery cell, the second baffle 302 can be recessed into the cavity 320, thereby maximizing the coolant filling volume of each flow channel during the process of the liquid cooling plate being compressed.

[0171] Figure 11 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Figure 11 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0172] refer to Figure 11 As shown, compared to Figure 10 The structure of the liquid cooling plate 300 shown is as follows: Figure 11 The liquid cooling plate 300 shown includes a first chamber 321 and a second chamber 322, wherein the first chamber 321 and the second chamber 322 are arranged side by side and adjacent to each other.

[0173] In some possible embodiments, the first flow channel portion 311 of the coolant flow channel 310 may be separated from the first chamber 321, the first chamber 321 from the second chamber 322, and the second chamber 322 from the coolant flow channel 310 by a second baffle 302.

[0174] In some possible embodiments, the two ends of the first chamber 321 can be sealed by the first baffle 301 and equipped with valves 350, one of which is a controllable throttle valve 351 and the other is a one-way valve 352; the two ends of the second chamber 322 can also be sealed by the first baffle 301 and equipped with valves 350, one of which is a controllable throttle valve 351 and the other is a one-way valve 352. Based on this structure, as time accumulates, the opening degree of the controllable throttle valve 351 gradually increases, eventually allowing both the first chamber 321 and the second chamber 322 to communicate with the coolant flow channel 310.

[0175] In some possible embodiments, the two ends of the first chamber 321 can be directly sealed without valve 350, or the two ends of the second chamber 322 can also be directly sealed without valve 350.

[0176] In some possible embodiments, the second baffle 302 described above may be recessed into the first cavity 321 or the second cavity 322.

[0177] Figure 12 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Figure 12 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0178] Figure 12 The coolant flow channel 310 of the liquid cooling plate 300 shown may include: a first flow channel portion 311, a second flow channel portion 312 and a third flow channel portion 313, and the cavity 320 may include: a first cavity 321, a second cavity 322, a third cavity 323, a fourth cavity 324 and a fifth cavity 325.

[0179] The first flow channel section 311 and the first empty chamber 321, the first empty chamber 321 and the second empty chamber 322, the second empty chamber 322 and the second flow channel section 312, the second flow channel section 312 and the third empty chamber 323, the third empty chamber 323 and the third flow channel section 313, the third flow channel section 313 and the fourth empty chamber 324, and the fourth empty chamber 324 and the fifth empty chamber 325 can be separated by the second baffle 302.

[0180] In addition, the two ends of each cavity are sealed by a first baffle 301 equipped with a valve 350 (controllable throttle valve 351 or check valve 352) to seal the first end (e.g. Figure 12 The first baffle 301 at the right end of the hollow chamber is equipped with a one-way valve for sealing the second end (e.g., Figure 12 The first baffle 301 at the left end of the hollow chamber is equipped with a controllable throttle valve.

[0181] In some possible embodiments, the valve opening rate of the controllable throttle valves provided on the first baffle 301 of different chambers increases at different rates. Based on this, multiple chambers can be fully connected to the coolant flow channel 310 at different times in a certain sequence.

[0182] Taking the first and second controllable throttle valves among the multiple controllable throttle valves provided in the aforementioned multiple first baffles 301 as examples, the control logic of the first and second controllable throttle valves can be different. For example, as the remaining battery life decreases, the first controllable throttle valve increases its valve opening rate faster, while the second controllable throttle valve increases its valve opening rate slower, and vice versa. Based on this, the first and second controllable throttle valves can reach their maximum valve opening at different times, thereby allowing each chamber to reach a fully open state sequentially.

[0183] Based on this, multiple chambers can be fully opened in a certain order, thereby gradually increasing the number of chambers connected to the coolant flow channel and thus better controlling the overall volume of the coolant flow channel.

[0184] In some possible embodiments, the second baffle 302 between the first flow channel portion 311 and the first chamber 321 may be recessed into the first chamber 321; the second baffle 302 between the first chamber 321 and the second chamber 322 may be recessed into the first chamber 321; the second baffle 302 between the second chamber 322 and the second flow channel portion 312 may be recessed into the second chamber 322; the second baffle 302 between the second flow channel portion 312 and the third chamber 323 may be recessed into the third chamber 323; the second baffle 302 between the third chamber 323 and the third flow channel portion 313 may be recessed into the third chamber 323; the second baffle 302 between the third flow channel portion 313 and the fourth chamber 324 may be recessed into the fourth chamber 324; and the second baffle 302 between the fourth chamber 324 and the fifth chamber 325 may be recessed into the fifth chamber 325.

[0185] Based on the above technical solution, designing the coolant flow channel inside the liquid cooling plate as an S-shaped or serpentine flow channel structure can effectively overcome the problem that the diameter of the flow channel inside the liquid cooling plate is compressed when the liquid cooling plate is squeezed, resulting in an increase in the flow resistance of the coolant in the flow channel. At the same time, it can also increase the effective liquid cooling area of ​​the liquid cooling plate as much as possible, which helps to further increase the heat dissipation effect of the liquid cooling plate.

[0186] Regarding the liquid cooling plate based on the controllable throttle valve mentioned above, this application also proposes a control method. This control method is used to control the valve opening of the controllable throttle valve so as to realize the function of gradually increasing the valve opening of the controllable throttle valve as the remaining service life of the battery decreases, so as to avoid the problem of increased flow resistance in the flow channel caused by the expansion and compression of the battery cell.

[0187] Figure 13 This is a schematic flowchart of a control method 1300 according to an embodiment of this application. The control method 1300 is described using the aforementioned controllable throttle valve as an example. The control method 1300 can be executed by a controller connected to the valve, which can be a controllable throttle valve. The control method 1300 may include the following steps:

[0188] S1310: Obtain battery status information, which indicates the remaining lifespan of the current battery.

[0189] S1320: Determine the target valve opening based on battery status information.

[0190] S1330: Adjust the valve opening to the target opening.

[0191] In some possible embodiments, in new energy vehicles, the aforementioned battery status information can be sent by the battery management system and received by the controller.

[0192] In some possible embodiments, the battery state information described above may include the battery SOH value.

[0193] In some possible embodiments, the liquid cooling plate may include multiple controllable throttle valves, the opening of which may be controlled by a separate controller or by a single master controller.

[0194] In some possible embodiments, the valve opening of the controllable throttle valve can be set to multiple levels. When the battery SOH value is in different ranges, the controller can control the valve opening of the controllable throttle valve to a specified level.

[0195] For example, when the battery SOH value is (95%, 100%), the controller controls the controllable throttle valve to be in the first position, which corresponds to a valve opening of 0%; when the battery SOH value is (90%, 95%), the controller controls the controllable throttle valve to be in the second position, which corresponds to a valve opening of 20%; when the battery SOH value is (85%, 90%), the controller controls the controllable throttle valve to be in the third position, which corresponds to a valve opening of 40%. When the battery SOH value is (80%, 85%), the controller controls the controllable throttle valve to the fourth position, which corresponds to a valve opening of 60%. When the battery SOH value is (70%, 80%), the controller controls the controllable throttle valve to the fifth position, which corresponds to a valve opening of 80%. When the battery SOH value is (0%, 70%), the controller controls the controllable throttle valve to the sixth position, which corresponds to a valve opening of 100%.

[0196] Based on the above technical solution, by controlling the valve opening of the controllable throttle valve to gradually open with the cumulative usage time of the battery cell, the valve opening of the controllable throttle valve reaches its maximum when the battery cell expands to a certain extent, so that the corresponding cavity is completely connected with the coolant flow channel, thereby increasing the diameter of the flow channel. This can effectively overcome the problem that when the liquid cooling plate is squeezed, the diameter of the flow channel inside the liquid cooling plate is compressed, resulting in a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the coolant flow channel. This ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared with before being squeezed, thereby ensuring that the heat exchange effect of the liquid cooling plate will not deteriorate due to squeezing.

[0197] Based on the above technical principle of setting a valve at the end of the empty chamber 320 and controlling the valve opening to gradually increase in order to indirectly increase the flow channel diameter and reduce the flow resistance of the coolant in the flow channel, the following liquid cooling plate structure is further proposed.

[0198] Figure 14 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Figure 14 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0199] refer to Figure 14 As shown, the liquid cooling plate 300 includes:

[0200] Coolant flow channel 310;

[0201] Empty room 320;

[0202] A first baffle 301 is provided between the coolant flow channel 310 and the empty chamber 320, and the first baffle 301 can be raised and lowered within the empty chamber 320.

[0203] In some possible embodiments, the above-mentioned empty chamber 320 includes a lifting mechanism 360, the lifting end of which is fixed to the first baffle 301.

[0204] Among them, reference Figure 14 As shown, the lifting mechanism 360 is used to drive the first baffle 301 to move upward, and the amount of movement of the first baffle 301 is related to the remaining service life of the battery.

[0205] In some possible embodiments, the lifting mechanism 360 may be located on one of the two ends of the empty chamber 320; or the lifting mechanism 360 may include two sets of lifting components, one set of which is located on the left end of the empty chamber 320 and the other set of which is located on the right end of the empty chamber 320.

[0206] The translation range of the first baffle 301 is [0, W], where W is the width of the cavity 320. Therefore, the translation range of the first baffle 301 is within [0, W]. Figure 14 The range within the empty chamber 320 in the example that allows for longitudinal translation.

[0207] In some possible embodiments, the remaining lifespan of the battery can also be characterized by the cumulative usage time of the battery or by the SOH value of the battery.

[0208] In some possible embodiments, the correspondence between the translation amount of the first baffle 301 and the cumulative usage time of the cell or the remaining service life of the battery can be determined by one or more methods such as experience, theoretical derivation, experimentation, or simulation.

[0209] In some possible embodiments, the lifting mechanism 360 described above can be powered and controlled by an electronic control structure, which can be located on the surface (e.g., a large surface) or in the gap of the liquid cooling plate 300 that does not contact the battery cell.

[0210] Based on the above technical solution, the longitudinal translation of the first baffle, which is positioned between the empty chamber and the coolant channel, is controlled by a lifting mechanism to integrate at least a portion of the empty chamber with the coolant channel. When the cell expands to a certain extent, the longitudinal translation of the first baffle reaches its maximum, ensuring complete communication between the empty chamber and the coolant channel. This effectively overcomes the problem that when the liquid cooling plate is compressed, the diameter of the channel within the liquid cooling plate is reduced, leading to a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the channel. This ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared to before compression, thus preventing the heat exchange effect of the liquid cooling plate from deteriorating due to compression.

[0211] In some possible embodiments, as described above Figure 3 Similar to the liquid cooling plate 300 shown above, Figure 14When the liquid cooling plate 300 shown is not subjected to pressure from the battery cell, the first baffle 301 is recessed into the cavity 320.

[0212] Figure 15 This is a schematic diagram of another liquid cooling plate 300 proposed in an embodiment of this application. Figure 15 This is a cross-sectional view of the 300mm surface of the liquid cooling plate.

[0213] Figure 15 The coolant flow channel 310 of the liquid cooling plate 300 shown may include: a first flow channel portion 311, a second flow channel portion 312 and a third flow channel portion 313, and the cavity 320 may include: a first cavity 321, a second cavity 322, a third cavity 323, a fourth cavity 324 and a fifth cavity 325.

[0214] Specifically, the first flow channel section 311 is separated from the first chamber 321 by a second baffle 302, the first chamber 321 is separated from the second chamber 322 by a second baffle 302, the second chamber 322 is separated from the second flow channel section 312 by a first baffle 301, the second flow channel section 312 is separated from the third chamber 323 by a second baffle 302, the third chamber 323 is separated from the third flow channel section 313 by a first baffle 301, the third flow channel section 313 is separated from the fourth chamber 324 by a first baffle 301, and the fourth chamber 324 is separated from the fifth chamber 325 by a second baffle 302.

[0215] The second chamber 322 is equipped with a first lifting mechanism 361, the lifting end of which is fixed to a first baffle 301 used to separate the second chamber 322 from the second flow channel portion 312; in addition, the fourth chamber 324 is equipped with a second lifting mechanism 362, which is fixed to a first baffle 301 used to separate the fourth chamber 324 from the third flow channel portion 313.

[0216] In some possible embodiments, the second baffle 302 between the first flow channel portion 311 and the first chamber 321 may be recessed into the first chamber 321; the first baffle 301 between the first chamber 321 and the second chamber 322 may be recessed into the first chamber 321; the first baffle 301 between the second chamber 322 and the second flow channel portion 312 may be recessed into the second chamber 322; the second baffle 302 between the second flow channel portion 312 and the third chamber 323 may be recessed into the third chamber 323; the first baffle 301 between the third chamber 323 and the third flow channel portion 313 may be recessed into the third chamber 323; the first baffle 301 between the third flow channel portion 313 and the fourth chamber 324 may be recessed into the fourth chamber 324; and the first baffle 301 between the fourth chamber 324 and the fifth chamber 325 may be recessed into the fifth chamber 325. Based on this, the negative impact on the coolant filling volume of each flow channel can be minimized as much as possible during the compression of the liquid cooling plate.

[0217] In some possible embodiments, the second baffle 302 may not be provided between the first cavity 321 and the second cavity 322 to form a larger cavity, and the first baffle 301 in the original second cavity 322 may be raised and lowered in the larger cavity; and the second baffle 302 may not be provided between the fourth cavity 324 and the fifth cavity 325.

[0218] Based on the above technical solution, designing the coolant flow channel inside the liquid cooling plate as an S-shaped or serpentine flow channel structure can effectively overcome the problem that the diameter of the flow channel inside the liquid cooling plate is compressed when the liquid cooling plate is squeezed, resulting in an increase in the flow resistance of the coolant in the flow channel. At the same time, it can also increase the effective liquid cooling area of ​​the liquid cooling plate as much as possible, which helps to further increase the heat dissipation effect of the liquid cooling plate.

[0219] Based on the above technical solution, the multiple flow channels inside the liquid cooling plate are designed in an S-shape or serpentine arrangement. This can effectively overcome the problem that when the liquid cooling plate is squeezed, the diameter of the flow channels inside the liquid cooling plate is compressed, which leads to an increase in the flow resistance of the coolant in the flow channels. At the same time, it can also increase the effective liquid cooling area of ​​the liquid cooling plate as much as possible, which helps to further increase the heat dissipation effect of the liquid cooling plate.

[0220] In some possible embodiments, the specific control methods of the first lifting mechanism 361 and the second lifting mechanism 362 described above can be different. For example, as the remaining battery life decreases, the first lifting mechanism 361 raises the first baffle 301 at a faster rate, while the second lifting mechanism 362 raises the first baffle 301 at a slower rate, and vice versa. Based on this, multiple chambers can be made to be fully connected to the coolant flow channel 310 in a certain order, thereby enabling better control of the overall volume of the coolant flow channel.

[0221] Similarly, for the liquid cooling plate based on the lifting mechanism mentioned above, this application also proposes another control method. This control method is used to control the translation amount of the translation baffle of the lifting mechanism, so that as the remaining service life of the battery decreases, the baffle connected to the lifting mechanism gradually rises in the position of the empty chamber, so that at least part of the empty chamber merges with the adjacent flow channel, avoiding the problem of increased flow resistance caused by the expansion and compression of the battery cell.

[0222] The control method is illustrated using the first lifting mechanism 361 mentioned above as an example.

[0223] Figure 16 This is a flowchart illustrating a control method 1600 according to an embodiment of this application. The control method 1600 can be executed by a controller connected to the lifting mechanism, and the control method 1600 may include the following steps:

[0224] S1610: Obtain battery status information, which indicates the remaining lifespan of the current battery.

[0225] S1620: Determine the target translation amount based on battery status information.

[0226] S1630: Control the lifting mechanism to drive the first baffle to rise upward in the empty chamber by the target translation amount.

[0227] In some possible embodiments, in new energy vehicles, the aforementioned battery status information can be sent by the battery management system and received by the controller.

[0228] In some possible embodiments, the battery state information described above may include the battery SOH value.

[0229] In some possible embodiments, the liquid cooling plate may include multiple lifting mechanisms, each of which may be controlled by a separate controller to adjust the valve opening, or the valve opening may be controlled by a single master controller.

[0230] In some possible embodiments, the position to which the lifting mechanism raises the first baffle in the empty chamber can be set to multiple position levels. When the battery SOH value is in different ranges, the controller can control the lifting mechanism to raise the first baffle in the empty chamber to a specified position level.

[0231] For example, when the battery SOH value is (95%, 100%), the controller controls the valve opening of the controllable throttle valve to be in the first position, and the translation amount of the first baffle corresponding to the first position is 0; when the battery SOH value is (90%, 95%), the controller controls the valve opening of the controllable throttle valve to be in the second position, which corresponds to 20% of the overall width of the empty chamber; when the battery SOH value is (85%, 90%), the controller controls the lifting mechanism to drive the first baffle to rise to the third position, which corresponds to 40% of the overall width of the empty chamber. When the battery SOH value is (80%, 85%), the controller controls the lifting mechanism to raise the first baffle to the fourth position, which corresponds to 60% of the overall width of the empty compartment; when the battery SOH value is (70%, 80%), the controller controls the lifting mechanism to raise the first baffle to the fifth position, which corresponds to 80% of the overall width of the empty compartment; when the battery SOH value is (0%, 70%), the controller controls the lifting mechanism to raise the first baffle to the sixth position, which corresponds to 100% of the overall width of the empty compartment.

[0232] Based on the above technical solution, by controlling the longitudinal translation of the first baffle, which is spaced between the empty chamber and the coolant flow channel, within the empty chamber, at least a portion of the empty chamber is integrated with the coolant flow channel. When the cell expands to a certain extent, the longitudinal translation of the first baffle within the empty chamber reaches its maximum, ensuring complete communication between the empty chamber and the coolant flow channel. This effectively overcomes the problem that when the liquid cooling plate is compressed, the diameter of the flow channel inside the liquid cooling plate is reduced, leading to a decrease in the overall volume of the liquid cooling plate and an increase in the flow resistance of the coolant in the coolant flow channel. This ensures that the overall volume of the liquid cooling plate remains as consistent as possible compared to before compression, thereby ensuring that the heat exchange effect of the liquid cooling plate does not deteriorate due to compression.

[0233] Furthermore, embodiments of this application also provide an apparatus for implementing any of the above methods. For example, a control device is provided, which includes a unit (or means) for implementing any of the above control methods.

[0234] Figure 17 This is a schematic block diagram of a control device 1700 provided in an embodiment of this application. The control device 1700 includes:

[0235] The acquisition unit 1710 is used to acquire battery status information, which is used to indicate the remaining lifespan of the current battery.

[0236] The determination unit 1720 is used to determine the target opening degree of the valve based on the battery status information.

[0237] The actuator 1730 is used to adjust the valve opening to the target opening.

[0238] Based on this, the device 1700 can be used to implement the control method 1300 described above.

[0239] In some possible embodiments, the determining unit 1720 may also be configured to determine the target translation amount based on battery state information. The executing unit 1730 may also be configured to control the lifting mechanism to raise the first baffle upward in the empty chamber by the target translation amount.

[0240] Based on this, the device 1700 can be used to implement the control method 1600 described above.

[0241] This application also proposes a liquid cooling system, which includes a plurality of liquid cooling plates 300 as proposed in any of the embodiments of this application.

[0242] In some possible embodiments, the plurality of liquid cooling plates 300 described above may be arranged side by side and spaced apart, wherein the spacing between two adjacent liquid cooling plates 300 corresponds to the width of the battery cell.

[0243] This application also proposes a battery comprising multiple cells and a liquid cooling system as proposed in this application.

[0244] In some possible embodiments, the liquid cooling plate 300 in the above-described liquid cooling system is sandwiched between two battery cells, for example, it may be sandwiched between the large surfaces of the two battery cells.

[0245] Furthermore, embodiments of this application also propose an electrical device, which includes the battery proposed in embodiments of this application.

[0246] In some possible embodiments, the aforementioned electrical device may be a new energy vehicle.

[0247] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules within the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, power-on erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0248] It should be understood that in the embodiments of this application, the memory may include read-only memory and random access memory, and provides instructions and data to the processor.

[0249] It should also be understood that, in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0250] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0251] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0252] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0253] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0254] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0255] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0256] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be covered. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A liquid-cooled plate, characterized in that, include: Coolant flow channels; empty room; The coolant flow channel and the empty chamber are separated by a first baffle. The first baffle has a weak part. When the first baffle breaks, the coolant flow channel and the empty chamber are connected.

2. The liquid cooling plate according to claim 1, characterized in that, The first baffle includes a bend, which is used to generate stress concentration.

3. The liquid cooling plate according to claim 1, characterized in that, The thickness of the first part of the first baffle is less than the thickness of the second part of the first baffle.

4. The liquid cooling plate according to claim 1, characterized in that, The first part of the first baffle includes a first material, and the second part of the first baffle includes a second material, wherein the strength of the first material is greater than the strength of the second material.

5. The liquid cooling plate according to claim 1, characterized in that, The first baffle includes a third material that is soluble in the coolant.

6. The liquid-cooled plate according to any one of claims 1 to 5, characterized in that, The coolant flow channel and the empty chamber are spaced apart by a plurality of first baffles, and the strength of the plurality of first baffles is different.

7. The liquid-cooled plate according to claim 5, characterized in that, The first baffle is located at the end of the empty chamber.

8. The liquid cooling plate according to claim 7, characterized in that, Valves are provided at the first and second ends of the empty chamber.

9. The liquid-cooled plate according to any one of claims 1 to 5, 7, and 8, characterized in that, A second baffle is also provided between the coolant flow channel and the cavity, and the strength of the second baffle is greater than that of the first baffle.

10. A liquid-cooled plate, characterized in that, include: Coolant flow channels; empty room; A first baffle is provided between the coolant flow channel and the empty chamber, and the first baffle can be raised and lowered within the empty chamber.

11. The liquid cooling plate according to claim 10, characterized in that, The empty room includes a lifting mechanism, and the lifting end of the lifting mechanism is fixed to the first baffle.

12. A liquid cooling system, characterized in that, It includes multiple liquid cooling plates as described in any one of claims 1 to 11.

13. A battery, characterized in that, It includes multiple battery cells and a liquid cooling system as described in claim 12, wherein the liquid cooling plate is sandwiched between two adjacent battery cells.

14. An electrical appliance, characterized in that, Includes the battery as described in claim 13.

15. The electrical appliance according to claim 14, characterized in that, The electrical device in question is a new energy vehicle.

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