Thermal management component, battery and electric equipment

Abstract

The invention discloses a heat management component, a battery and electric equipment. The heat management component is provided with a liquid inlet flow channel, a first main flow channel, a second main flow channel, a first group of flow channels and a second group of flow channels, in the second direction, the first main runner is provided with a first inflow end, the second main runner is provided with a second inflow end, and the second direction intersects with the first direction; the first group of runners comprises at least one first sub-runner, and the first inflow end is communicated with the liquid inlet runner through the first group of runners. The second group of runners comprises at least one second sub-runner, and the second inflow end is communicated with the liquid inlet runner through the second group of runners; and in the second direction, the projection of the first group of flow channels falls into the projection of the first inflow end, and the projection of the second group of flow channels falls into the projection of the second inflow end. In the flowing direction of liquid in the liquid inlet flow channel, the second set of flow channels are located on the downstream of the first set of flow channels, and the sum of the cross sectional areas of the second set of flow channels is larger than the sum of the cross sectional areas of the first set of flow channels.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more particularly, to a thermal management component, a battery, and an electrical device. Background Art

[0002] With the development of new energy technologies, batteries are increasingly widely used. Batteries have high energy density, high safety, long service life, and environmental friendliness, and have been widely applied in passenger cars, commercial vehicles, electric bicycles, heavy trucks, energy storage facilities, battery swapping stations, engineering manufacturing, intelligent devices, etc. At the same time, they also promote the technological development and research in the fields of communication terminals, medical devices, energy development, etc.

[0003] In battery technology, if the temperature of a battery cell is too high or too low, the cycle performance of the battery cell will decline, reducing the reliability of the battery. How to improve the cycle life of battery cells and enhance the reliability of batteries is an urgent problem in battery technology. Summary of the Invention

[0004] Embodiments of the present application provide a thermal management component, a battery, and an electrical device, which can improve the flow uniformity of the thermal management component, thereby enhancing the reliability of the battery.

[0005] In a first aspect, embodiments of the present application provide a thermal management component, which has an inlet flow channel, a first set of flow channels, a second set of flow channels, a first main flow channel, and a second main flow channel; the first main flow channel and the second main flow channel are arranged side by side at intervals along a first direction; in a second direction, the first main flow channel has a first inlet end, and the second main flow channel has a second inlet end, and the second direction intersects the first direction; the first set of flow channels includes at least one first shunt channel, and the first inlet end is communicated with the inlet flow channel through the first set of flow channels; the second set of flow channels includes at least one second shunt channel, and the second inlet end is communicated with the inlet flow channel through the second set of flow channels; along the second direction, the projection of the first set of flow channels falls within the projection of the first inlet end, and the projection of the second set of flow channels falls within the projection of the second inlet end; wherein, along the liquid flow direction in the inlet flow channel, the second set of flow channels is located downstream of the first set of flow channels, and the sum of the cross-sectional areas of the second set of flow channels is greater than the sum of the cross-sectional areas of the first set of flow channels.

[0006] In the above technical solution, the first group of flow channels connects the first main flow channel and the liquid inlet flow channel, and the first group of flow channels introduces liquid into the first main flow channel. The second group of flow channels connects the second main flow channel and the liquid inlet flow channel, and the first group of flow channels introduces liquid into the second main flow channel. The second group of flow channels is located downstream of the first group of flow channels, and the sum of the cross-sectional areas of the second group of flow channels is greater than the sum of the cross-sectional areas of the first group of flow channels. In this way, the flow rate of the liquid entering the second main flow channel can be increased, the difference between the flow rate of the liquid in the first main flow channel and the flow rate of the liquid in the second main flow channel can be reduced, so that the liquid flow rates distributed to the first main flow channel and the second main flow channel are more uniform, the liquid flow velocities in the first main flow channel and the second main flow channel are closer, thereby improving the flow uniformity of the heat management component, improving the heat exchange effect of the heat management component, improving the cycling performance of the battery cell, and improving the reliability of the battery.

[0007] In some embodiments, the number of the first shunt channels is one, the number of the second shunt channels is one, and the cross-sectional area of the second shunt channel is greater than the cross-sectional area of the first shunt channel.

[0008] In the above technical solution, one first shunt channel introduces liquid into the first main flow channel, and one second shunt channel introduces liquid into the second main flow channel. The small number of the first shunt channel and the second shunt channel can reduce the manufacturing difficulty of the heat management component.

[0009] In some embodiments, along the first direction, the width of the first shunt channel is W1, and the width of the second shunt channel is W2, satisfying 10 mm ≤ W1 ≤ 20 mm and 15 mm ≤ W2 ≤ 25 mm.

[0010] In the above technical solution, 10 mm ≤ W1, the first shunt channel is not too narrow, which can relieve the pressure drop of the liquid in the first shunt channel; W1 ≤ 20 mm, the first shunt channel is not too wide, so that the liquid flow rate in the first shunt channel 5a is not too large, which is beneficial to improving the flow uniformity of the heat management component; therefore, 10 mm ≤ W1 ≤ 20 mm can balance the pressure drop and the flow uniformity of the heat management component.

[0011] 15 mm ≤ W2, the second shunt channel is not too narrow, which can relieve the pressure drop of the liquid in the second shunt channel and the second shunt channel has a large liquid flow rate; W2 ≤ 25 mm, the second shunt channel is not too large, and a heat management component with a small volume can be obtained. Therefore, 15 mm ≤ W2 ≤ 25 mm can balance the pressure drop and the volume of the heat management component.

[0012] In some embodiments, the number of the first shunt channels is multiple, the multiple first shunt channels are arranged at intervals along the first direction, the number of the second shunt channels is one, and the cross-sectional area of the second shunt channel is greater than the sum of the cross-sectional areas of all the first shunt channels.

[0013] In the above technical solution, liquid is introduced into the first main flow channel through a plurality of first shunt channels, and liquid is introduced into the second main flow channel through one second shunt channel, thereby improving the flow uniformity of the heat management component.

[0014] In some embodiments, the number of the first shunt channels is one, the number of the second shunt channels is multiple, the multiple second shunt channels are arranged at intervals along the first direction, and the sum of the cross-sectional areas of all the second shunt channels is greater than the cross-sectional area of the first shunt channel.

[0015] In the above technical solution, liquid is introduced into the first main flow channel through one first shunt channel, and liquid is introduced into the second main flow channel through a plurality of second shunt channels, thereby improving the flow uniformity of the heat management component.

[0016] In some embodiments, the number of the first shunt channels is multiple, the multiple first shunt channels are arranged at intervals along the first direction; the number of the second shunt channels is multiple, the multiple second shunt channels are arranged at intervals along the first direction, and the sum of the cross-sectional areas of all the second shunt channels is greater than the sum of the cross-sectional areas of all the first shunt channels.

[0017] In the above technical solution, liquid is introduced into the first main flow channel through a plurality of first shunt channels, and liquid is introduced into the second main flow channel through a plurality of second shunt channels. The number of both the first shunt channels and the second shunt channels is multiple, which is convenient for arranging the first shunt channels and the second shunt channels at different positions according to needs, so as to improve the flow uniformity of the heat management component and reduce the manufacturing difficulty of the heat management component.

[0018] In some embodiments, the heat management component has a liquid inlet, and the liquid inlet is arranged at one end of the liquid inlet flow channel.

[0019] In some embodiments, the heat management component further has a first communication flow channel. Along the first direction, the first communication flow channel is arranged between the first inflow end and the second inflow end and is respectively communicated with the first inflow end and the second inflow end.

[0020] In the above technical solution, the first communication flow channel is respectively communicated with the first inflow end and the second inflow end. The first communication flow channel can introduce the liquid at the first inflow end of the first main flow channel into the second main flow channel. In this way, the flow resistance can be reduced, the pressure drop of the liquid can be alleviated, the total flow rate of the liquid in the heat management can be increased, and thus the heat exchange effect of the heat management component can be improved.

[0021] In some embodiments, the heat management component further has a third group of flow channels. The third group of flow channels includes at least one third shunt channel. The first communication flow channel is communicated with the liquid inlet flow channel through the third group of flow channels; along the second direction, the projection of the third group of flow channels falls within the projection of the first communication flow channel.

[0022] In the above technical solution, the first communication flow channel is communicated with the liquid inlet flow channel through the third group of flow channels. The third diversion channel can introduce liquid into the first communication flow channel, which can further reduce the flow resistance, relieve the pressure drop of the liquid, increase the total flow rate of the liquid in the thermal management, and thus improve the heat exchange effect of the thermal management component.

[0023] In some embodiments, the sum of the cross-sectional areas of the third group of flow channels is greater than the sum of the cross-sectional areas of the first group of flow channels, and the sum of the cross-sectional areas of the third group of flow channels is less than the sum of the cross-sectional areas of the second group of flow channels.

[0024] In the above technical solution, the cross-sectional areas of the first flow channel group, the third flow channel group, and the second flow channel group increase in sequence. In this way, along the flow direction of the liquid in the liquid inlet flow channel, the resistance received by the liquid decreases in sequence, which is beneficial to increasing the total flow rate of the liquid in the thermal management component, and thus improving the heat exchange effect of the thermal management component.

[0025] In some embodiments, along the flow direction of the liquid in the liquid inlet flow channel, the liquid inlet flow channel includes a first upstream section located upstream of the first group of flow channels and a first downstream section located downstream of the first group of flow channels. The second group of flow channels is connected to the first downstream section, and the cross-sectional area of the first downstream section is greater than the sum of the cross-sectional areas of the first group of flow channels.

[0026] In the above technical solution, the cross-sectional area of the first downstream section is greater than the sum of the cross-sectional areas of the first group of flow channels. In this way, compared with the first group of flow channels, the liquid can more easily enter the first downstream section, and thus flow into the second main flow channel through the second group of flow channels, thereby further improving the flow uniformity of the thermal management component.

[0027] In some embodiments, the width of the first downstream section is W3, satisfying 15 mm ≤ W3 ≤ 25 mm.

[0028] In the above technical solution, 15 mm ≤ W3, the first downstream section is not too narrow, which can relieve the pressure drop of the liquid in the first downstream section; W3 ≤ 25 mm, the first downstream section is not too wide, which can reduce the width of the first downstream section, thereby obtaining a thermal management component with a smaller volume. Therefore, 15 mm ≤ W3 ≤ 25 mm can balance the pressure drop and volume of the thermal management component.

[0029] In some embodiments, the first downstream section extends along the first direction.

[0030] In the above technical solution, the first downstream section extends along the first direction, and the arrangement directions of the first main flow channel and the second main flow channel are the same as the extension direction of the first downstream section. In this way, it is allowed that the first downstream section, the first main flow channel, and the second main flow channel can be arranged more compactly, thereby obtaining a thermal management component with a smaller volume and improving the energy density of the battery using the thermal management component.

[0031] In some embodiments, the first upstream section is inclined relative to the first downstream section.

[0032] In the above technical solution, the first upstream section is inclined relative to the first downstream section, so that the first upstream section and the first downstream section form an included angle. In this way, when the lengths of the first upstream section and the first downstream section are fixed, the overall size of the liquid inlet channel in the first direction and the second direction is relatively small, and a heat management component with a smaller volume can be obtained, thereby improving the energy density of the battery using the heat management component.

[0033] In some embodiments, the first main channel has a first wall and a second wall opposite to each other along the first direction, and a first flow disturbing member is provided at the first inlet end; along the first direction, the first flow disturbing member is spaced apart from the first wall, and the first flow disturbing member is spaced apart from the second wall; along the second direction, the first flow disturbing member is spaced apart from the first group of channels.

[0034] In the above technical solution, the first flow disturbing member can split the liquid at the first inlet end, so that the liquid can first flow to the positions of the first wall and the second wall, thereby alleviating the problem of uneven liquid flow velocity in the first main channel caused by the resistance of the first wall and the second wall to the liquid.

[0035] In some embodiments, the second main channel has a third wall and a fourth wall opposite to each other along the first direction, and a second flow disturbing member is provided at the second inlet end; along the first direction, the second flow disturbing member is spaced apart from the third wall, and the second flow disturbing member is spaced apart from the fourth wall; along the second direction, the second flow disturbing member is spaced apart from the second group of channels.

[0036] In the above technical solution, the second flow disturbing member can split the liquid at the second inlet end, so that the liquid can first flow to the positions of the third wall and the fourth wall, thereby alleviating the problem of uneven liquid flow velocity in the second main channel caused by the resistance of the third wall and the fourth wall to the liquid.

[0037] In some embodiments, the thermal management component further has an outlet flow channel, a fourth group of flow channels, a fifth group of flow channels, a third main flow channel, and a fourth main flow channel; the third main flow channel and the fourth main flow channel are arranged side by side and spaced apart along the first direction; in the second direction, the third main flow channel has a third outlet end, and the fourth main flow channel has a fourth outlet end; the fourth group of flow channels includes at least one fourth shunt channel, and the third outlet end is communicated with the outlet flow channel through the fourth group of flow channels; the fifth group of flow channels includes at least one fifth shunt channel, and the fourth outlet end is communicated with the outlet flow channel through the fifth group of flow channels; along the second direction, the projection of the fourth group of flow channels falls within the projection of the third outlet end, and the projection of the fifth group of flow channels falls within the projection of the fourth outlet end; wherein, along the liquid flow direction in the outlet flow channel, the fourth group of flow channels is located upstream of the fifth group of flow channels, and the sum of the cross-sectional areas of the fourth group of flow channels is greater than the sum of the cross-sectional areas of the fifth group of flow channels.

[0038] In the above technical solution, the fourth group of flow channels connects the third flow channel and the outlet flow channel, the fourth group of flow channels conducts the liquid out of the third main flow channel, the fifth group of flow channels connects the fourth main flow channel and the outlet flow channel, and the fifth group of flow channels conducts the liquid out of the fourth main flow channel. The fifth group of flow channels is located downstream of the fourth group of flow channels, and the sum of the cross-sectional areas of the fifth group of flow channels is greater than the sum of the cross-sectional areas of the fourth group of flow channels. In this way, the flow rate of the liquid flowing out of the fourth main flow channel can be increased, the difference between the liquid flow rate in the third main flow channel and the liquid flow rate in the fourth main flow channel can be reduced, so that the flow channels for the liquid distributed in the third main flow channel and the fourth main flow channel are more uniform, thereby further improving the flow equalization of the thermal management component, improving the heat exchange effect of the thermal management component, improving the cycling performance of the battery cell, and improving the reliability of the battery.

[0039] In some embodiments, the first main flow channel, the second main flow channel, the third main flow channel, and the fourth main flow channel are arranged in sequence along the first direction.

[0040] In the above technical solution, the first main flow channel, the second main flow channel, the third main flow channel, and the fourth main flow channel are arranged in sequence along the first direction. In this way, the size occupation of the flow channel in the second direction can be reduced, the layout of the flow channel is compact, a thermal management component with a smaller volume can be obtained, and the energy density of the battery using the thermal management component can be improved.

[0041] In some embodiments, in the second direction, the first main flow channel has a first outflow end opposite to the first inflow end, the second main flow channel has a second outflow end opposite to the second inflow end, the third main flow channel has a third inflow end opposite to the third outflow end, and the fourth main flow channel has a fourth inflow end opposite to the fourth outflow end; the heat management component further has a second communication flow channel, and the second communication flow channel communicates with the first outflow end, the second outflow end, the third inflow end, and the fourth inflow end.

[0042] In the above technical solution, the first outflow end, the second outflow end, the third inflow end, and the fourth inflow end are respectively communicated with the second communication flow channel, so that the second communication flow channel can converge the liquids flowing out of the first main flow channel and the second main flow channel, and divert the liquids to the third main flow channel and the fourth main flow channel, thereby balancing the liquid flow rates in the first main flow channel, the second main flow channel, the third main flow channel, and the fourth main flow channel, further improving the flow uniformity of the heat management component, improving the heat exchange effect of the heat management component, improving the cycling performance of the battery cell, and improving the reliability of the battery.

[0043] In some embodiments, the heat management component has a liquid outlet, and the liquid outlet is arranged at one end of the liquid outflow channel.

[0044] In some embodiments, the heat management component further has a third communication flow channel. Along the first direction, the third communication flow channel is arranged between the third outflow end and the fourth outflow end and is respectively communicated with the third outflow end and the fourth outflow end.

[0045] In the above technical solution, the third communication flow channel is respectively communicated with the third outflow end and the fourth outflow end. Except for the fourth group of flow channels, the third communication flow channel can also lead out the liquid in the third main flow channel. In this way, the flow resistance can be further reduced, the pressure drop of the liquid can be alleviated, the liquid flow rate in the heat management can be increased, and thus the heat exchange effect of the heat management component can be improved.

[0046] In some embodiments, the heat management component further has a sixth group of flow channels, and the sixth group of flow channels includes at least one sixth diversion channel. The third communication flow channel is communicated with the liquid outflow channel through the sixth group of flow channels; along the second direction, the projection of the sixth group of flow channels falls within the projection of the third communication flow channel.

[0047] In the above technical solution, the third communication flow channel is communicated with the liquid outflow channel through the sixth group of flow channels. The sixth group of flow channels can lead out the liquid from the third communication flow channel, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, increase the liquid flow rate in the heat management, and thus improve the heat exchange effect of the heat management component.

[0048] In some embodiments, the sum of the cross-sectional areas of the sixth group of flow channels is greater than the sum of the cross-sectional areas of the fourth group of flow channels, and the sum of the cross-sectional areas of the sixth group of flow channels is less than the sum of the cross-sectional areas of the fifth group of flow channels.

[0049] In the above technical solution, the cross-sectional areas of the fourth flow channel group, the sixth flow channel group, and the fifth flow channel group increase in sequence. In this way, along the liquid flow direction in the liquid outlet flow channel, the resistance received by the liquid decreases in sequence, which is beneficial to increasing the liquid flow rate in the heat management component, improving the flow uniformity of the heat management component, and thus improving the heat exchange effect of the heat management component.

[0050] In some embodiments, along the liquid flow direction in the liquid outlet flow channel, the liquid outlet flow channel includes a second upstream section located upstream of the fifth group of flow channels and a second downstream section located downstream of the fifth group of flow channels. The fourth group of flow channels is connected to the second upstream section, and the cross-sectional area of the second upstream section is greater than the sum of the cross-sectional areas of the fourth group of flow channels.

[0051] In the above technical solution, the cross-sectional area of the second downstream section is greater than the sum of the cross-sectional areas of the fourth group of flow channels. In this way, compared with the liquid in the fourth group of flow channels, the pressure received by the liquid in the second upstream section is small, and the second upstream section can relieve the pressure drop, so as to obtain a heat management component with a smaller overall pressure drop, which is beneficial to improving the heat exchange effect of the heat management component.

[0052] In some embodiments, the third main flow channel has a fifth wall and a sixth wall opposite to each other along the first direction, and a third flow disturbing member is provided at the third liquid outlet end; along the first direction, the third flow disturbing member is spaced apart from the fifth wall, and the third flow disturbing member is spaced apart from the sixth wall; along the second direction, the third flow disturbing member is spaced apart from the fourth group of flow channels.

[0053] In the above technical solution, the third flow disturbing member can divert the liquid at the third liquid outlet end, so that the liquid can first flow to the positions of the fifth wall and the sixth wall and then flow out of the third main flow channel, so as to relieve the problem of uneven liquid flow velocity in the third main flow channel caused by the resistance of the fifth wall and the sixth wall to the liquid.

[0054] In some embodiments, the fourth main flow channel has a seventh wall and an eighth wall opposite to each other along the first direction, and a fourth flow disturbing member is provided at the fourth liquid outlet end; along the first direction, the fourth flow disturbing member is spaced apart from the seventh wall, and the fourth flow disturbing member is spaced apart from the eighth wall; along the second direction, the fourth flow disturbing member is spaced apart from the fifth group of flow channels.

[0055] In the above technical solution, the fourth spoiler can divert the liquid at the fourth outflow end, so that the liquid can first flow to the positions of the seventh wall and the eighth wall and then flow out of the fourth main flow channel, thereby alleviating the problem of uneven liquid flow velocity in the fourth main flow channel caused by the resistance of the seventh wall and the eighth wall to the liquid.

[0056] In a second aspect, an embodiment of the present application provides a battery, which includes the thermal management component provided in any embodiment of the first aspect.

[0057] In a third aspect, an embodiment of the present application provides an electrical device, which includes the battery provided in any embodiment of the second aspect, and the battery is used to supply power to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0059] Figure 1 Structural schematic diagram of a vehicle according to some embodiments of the present application;

[0060] Figure 2 Exploded schematic diagram of a battery according to some embodiments of the present application;

[0061] Figure 3 Structural schematic diagram of a thermal management component according to some embodiments of the present application;

[0062] Figure 4 Internal structural schematic diagram of a thermal management component according to some embodiments of the present application;

[0063] Figure 5 For Figure 4 Schematic diagram of the liquid flow direction in the thermal management component shown;

[0064] Figure 6 Partial enlarged view of a thermal management component according to some embodiments of the present application;

[0065] Figure 7 Internal structural schematic diagram of a thermal management component according to some other embodiments of the present application;

[0066] Figure 8 For Figure 7 Schematic diagram of the liquid flow direction in the thermal management component shown;

[0067] Figure 9 Internal structural schematic diagram of a thermal management component according to some other embodiments of the present application;

[0068] Figure 10 For Figure 9 the schematic diagram of the liquid flow direction in the heat management component shown;

[0069] Figure 11 the schematic diagram of the internal structure of the heat management component according to some other embodiments of the present application;

[0070] Figure 12 For Figure 11 the schematic diagram of the liquid flow direction in the heat management component shown.

[0071] Icons: 300 - heat management component; 310 - liquid inlet; 320 - liquid outlet; 330 - liquid inlet channel; 330a - first upstream section; 330b - first downstream section; 340 - liquid outlet channel; 340a - second upstream section; 340b - second downstream section; 1 - first main channel; 1a - first wall; 1b - second wall; 1c - first inlet end; 1d - first outlet end; 2 - second main channel; 2a - third wall; 2b - fourth wall; 2c - second inlet end; 2d - second outlet end; 3 - third main channel; 3a - fifth wall; 3b - sixth wall; 3d - third inlet end; 3c - third outlet end; 4 - fourth main channel; 4a - seventh wall; 4b - eighth wall; 4d - fourth inlet end; 4c - fourth outlet end; 5 - first group of channels; 5a - first diversion channel; 6 - second group of channels; 6a - second diversion channel; 7 - first connecting channel; 8 - second connecting channel; 9 - third connecting channel; 350 - third group of channels; 350a - third diversion channel; 360 - fourth group of channels; 360a - fourth diversion channel; 370 - fifth group of channels; 370a - fifth diversion channel; 380 - sixth group of channels; 380a - sixth diversion channel; 410 - first flow disturbing member; 420 - second flow disturbing member; 430 - third flow disturbing member; 440 - fourth flow disturbing member; 450 - fifth flow disturbing member; 100 - battery; 10 - battery cell; 20 - box body; 21 - first part; 22 - second part; 23 - accommodation space; 1000 - vehicle; 200 - motor; 400 - controller; Y - first direction; X - second direction; S1 - liquid flow direction in the liquid inlet channel; S2 - liquid flow direction in the liquid outlet channel.

[0072] The drawings are not drawn to actual scale. Detailed Embodiments

[0073] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0074] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0075] Reference to "embodiment" in this application means that a specific feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0076] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", and "attached to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of this application, it should be noted that unless otherwise stated, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0078] As used in this application, the term "or" merely describes the relationship between related objects, indicating that there can be two relationships. For example, A or B can represent two situations: A exists alone and B exists alone.

[0079] In the embodiments of this application, the same reference numerals represent the same components. For the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings in the embodiments of this application, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0080] As used in this application, "a plurality of" means two or more (including two).

[0081] In this application, the battery cell may include, but is not limited to, lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, magnesium-ion batteries, etc. The battery cell includes, but is not limited to, cylinders, flat bodies, cuboids, or other shapes, etc. Generally, the battery cell includes cylindrical battery cells, square battery cells, soft-pack battery cells, etc. in a packaged manner.

[0082] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly operates by the movement of metal ions between the positive electrode sheet and the negative electrode sheet. Metal ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive electrode sheet and the negative electrode sheet, and at the same time allow active ions to pass through.

[0083] The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector without the coated positive electrode active material layer protrudes from the positive electrode current collector with the coated positive electrode active material layer. The positive electrode current collector without the coated positive electrode active material layer serves as the positive electrode tab.

[0084] Taking a lithium-ion battery as an example, the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, etc. The positive electrode current collector can adopt a metal foil or a composite current collector. For example, as the metal foil, aluminum with silver plating on the surface, stainless steel with silver plating on the surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. can be used. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0085] The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector without the coated negative electrode active material layer protrudes from the negative electrode current collector with the coated negative electrode active material layer. The negative electrode current collector without the coated negative electrode active material layer serves as the negative electrode tab.

[0086] The negative electrode current collector can be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, titanium, etc. can be used. The negative electrode active material can be carbon or silicon, etc.

[0087] To ensure that large currents can pass through without fusing, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly can be a wound structure or a stacked structure.

[0088] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application can include a battery module or a battery pack, etc. A battery generally includes a box for encapsulating one or more battery cells. The box can reduce the influence of liquid or other foreign objects on the charging or discharging of the battery cells.

[0089] In some embodiments, the battery can be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0090] In some embodiments, the battery can be a battery pack. The battery pack includes a box and battery cells, and the battery cells or battery modules are accommodated in the box.

[0091] In some embodiments, multiple battery cells can be first integrated into at least one battery module, and then the battery module is installed in the box to form a battery pack. In this embodiment, auxiliary structural members such as crossbeams can be provided between the battery modules to improve the installation stability of the battery modules in the box.

[0092] In some embodiments, the box can be part of the chassis structure of a vehicle. For example, part of the box can become at least part of the floor of the vehicle, or part of the box can become at least part of the crossbeam and longitudinal beam of the vehicle.

[0093] In some embodiments, the battery can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0094] The development of battery technology needs to consider various design factors simultaneously. For example, performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, etc. In addition, the reliability of the battery also needs to be considered.

[0095] In battery technology, the cycle performance of a battery cell is related to the temperature of the battery cell. When the battery cell generates heat during use, resulting in too high a temperature of the battery cell, or the ambient temperature causes the temperature of the battery cell to be too high or too low, it will lead to a decline in the cycle performance of the battery cell. Therefore, a thermal management component is usually provided inside the battery to adjust the temperature of multiple battery cells so that the battery cells are within an appropriate temperature range.

[0096] Inside the thermal management component, there are usually multiple main channels for the liquid to flow through. The liquid flow rate in the main channel closer to the liquid inlet is larger and the flow speed is faster, while the liquid flow rate in the main channel farther from the liquid inlet is smaller and the flow speed is slower. The liquid flow rates in each main channel are uneven, the flow uniformity of the thermal management component is poor, the heat exchange effects at different positions of the thermal management component are inconsistent, and the ability of the thermal management component to adjust the temperature of the battery cell is poor, resulting in the cycle life of the battery cell and affecting the reliability of the battery.

[0097] In view of this, in order to improve the problem that the uneven flow rate of the thermal management component affects the battery reliability, the present application provides a technical solution. A first group of channels is provided between the liquid inlet channel and the first main channel, and a second group of channels is provided between the second main channel and the liquid inlet channel. The second group of channels is downstream of the first group of channels, and the sum of the cross-sectional areas of the second channel group is greater than the sum of the cross-sectional areas of the first channel group, so as to increase the flow rate of the liquid entering the second main channel, reduce the difference between the liquid flow rate in the first main channel and the liquid flow rate in the second main channel, make the liquid flow rates distributed to the first main channel and the second main channel more uniform, thereby improving the flow uniformity of the thermal management component, improving the heat exchange effect of the thermal management component, improving the cycle performance of the battery cell, and improving the reliability of the battery.

[0098] Among them, the thermal management component is a component used to accommodate a heat exchange medium to adjust the temperature of multiple battery cells. Adjusting the temperature means heating or cooling multiple battery cells. Accommodating the heat exchange medium is the liquid contained in the flow channels of the thermal management component. In the case of cooling or lowering the temperature of the battery cell, this thermal management component is used to accommodate a cooling medium to lower the temperature of multiple battery cells. At this time, the thermal management component can also be called a cooling component, a cooling system or a cooling plate, etc., and the liquid it contains can also be called a cooling medium or a cooling liquid, and more specifically, it can be called a coolant or a cooling gas. In addition, the thermal management component can also be used for heating to raise the temperature of multiple battery cells. Optionally, the liquid can be water, a mixture of water and ethylene glycol, etc.

[0099] For the convenience of description, the liquid mentioned later refers to the heat exchange medium uniformly.

[0100] The technical solutions disclosed in the embodiments of the present application are applicable to, but not limited to, batteries and electrical equipment using batteries.

[0101] The electrical equipment may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator, and a planer, etc.

[0102] For the convenience of description, the following embodiments will be described by taking the electrical equipment as a vehicle as an example.

[0103] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. A battery 100 is disposed inside the vehicle 1000. The battery 100 may be disposed at the bottom, head, or tail of the vehicle 1000. The battery 100 may be used to supply power to the vehicle 1000. For example, the battery 100 may be used as the operating power source of the vehicle 1000.

[0104] The vehicle 1000 may further include a controller 400 and a motor 200. The controller 400 is used to control the battery 100 to supply power to the motor 200. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0105] In some embodiments of the present application, the battery 100 can not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0106] In some embodiments, please refer to Figure 2 , Figure 2 , which is an exploded schematic diagram of a battery 100 according to some embodiments of the present application. The battery 100 includes a plurality of battery cells 10 and a thermal management component 300. The plurality of battery cells 10 can be connected in series, parallel, or in a series-parallel combination. Among them, the series-parallel combination means that there are both series and parallel connections among the plurality of battery cells 10.

[0107] In some embodiments, the battery 100 may further include a busbar component (not shown in the figure). The plurality of battery cells 10 can be electrically connected through the busbar component to achieve series, parallel, or series-parallel connection of the plurality of battery cells 10.

[0108] The current collecting component can be a metal conductor, such as copper, iron, aluminum, steel, aluminum alloy, etc.

[0109] In some embodiments, the battery 100 may further include a box body 20 for accommodating the battery cells 10. The box body 20 may include a first part 21 and a second part 22, and the first part 21 and the second part 22 cover each other to define an accommodation space 23 for accommodating the battery cells 10. Of course, the connection between the first part 21 and the second part 22 can be sealed by a sealing element (not shown in the figure), and the sealing element can be a sealing ring, sealant, etc.

[0110] Among them, the first part 21 and the second part 22 can be of various shapes, such as a cuboid, a cylinder, etc. The first part 21 can be a hollow structure with one side open, and the second part 22 can also be a hollow structure with one side open. When the open side of the second part 22 covers the open side of the first part 21, the box body 20 with the accommodation space 23 is formed. Of course, it can also be that the first part 21 is a hollow structure with one side open and the second part 22 is a plate-like structure. When the second part 22 covers the open side of the first part 21, the box body 20 with the accommodation space 23 is formed.

[0111] Refer to Figure 2 , in some embodiments, the battery 100 further includes a thermal management component 300. A flow channel is provided inside the thermal management component 300, and the flow channel is used for a liquid to adjust the temperature of the battery cells 10. Among them, the thermal management component 300 can be used to adjust the temperature of the battery cells 10 at the bottom of the battery cells 10. Exemplarily, as Figure 2 shown, the thermal management component 300 is arranged at the bottom of the battery cells 10, and the upper surface of the thermal management component 300 is a heat exchange surface. The thermal management component 300 exchanges heat with the battery cells 10 through the upper surface. The thermal management component 300 can also be used between two adjacent battery cells 10. At this time, both surfaces of the thermal management component 300 in the thickness direction are heat exchange surfaces, and the thermal management component 300 can exchange heat with the battery cells 10 through the two heat exchange surfaces.

[0112] The embodiment of the present application provides a thermal management component 300, which can solve the problem that the poor flow uniformity of the thermal management component 300 affects the reliability of the battery 100. The specific structure of the thermal management component 300 will be elaborated in detail below with reference to the accompanying drawings.

[0113] Figure 3 is a schematic structural diagram of the thermal management component 300 according to some embodiments of the present application; Figure 4 is a schematic internal structure diagram of the thermal management component 300 according to some embodiments of the present application; Figure 5 is Figure 4Schematic diagram of the liquid flow direction in the heat management component 300 shown; Figure 6 Partial enlarged view of the heat management component 300 according to some embodiments of the present application.

[0114] An embodiment of the present application provides a heat management component 300. Referring to Figures 3 to 6 , the heat management component 300 has an inlet liquid flow channel 330, a first group of flow channels 5, a second group of flow channels 6, a first main flow channel 1, and a second main flow channel 2. The first main flow channel 1 and the second main flow channel 2 are arranged side by side at intervals along the first direction Y. In the second direction X, the first main flow channel 1 has a first inlet end, and the second main flow channel 2 has a second inlet end 2c. The second direction X intersects the first direction Y.

[0115] The first group of flow channels 5 includes at least one first sub-flow channel 5a, and the first inlet end is communicated with the inlet liquid flow channel 330 through the first group of flow channels 5. The second group of flow channels 6 includes at least one second sub-flow channel 6a, and the second inlet end 2c is communicated with the inlet liquid flow channel 330 through the second group of flow channels 6.

[0116] Along the second direction X, the projection of the first group of flow channels 5 falls within the projection of the first inlet end, and the projection of the second group of flow channels 6 falls within the projection of the second inlet end 2c. Among them, along the liquid flow direction S1 in the inlet liquid flow channel, the second group of flow channels 6 is located downstream of the first group of flow channels 5, and the sum of the cross-sectional areas of the second group of flow channels 6 is greater than the sum of the cross-sectional areas of the first group of flow channels 5.

[0117] The shape of the heat management component 300 can be various. The heat management component 300 can be constructed as circular, rectangular, oval, irregular, etc. Exemplarily, as Figures 3 to 5 shown, the heat management component 300 is constructed as rectangular.

[0118] It should be understood that the inlet liquid flow channel 330, the first group of flow channels 5, the second group of flow channels 6, the first main flow channel 1, and the second main flow channel 2 are all flow channels in the heat management component 300 for accommodating liquid. Among them, the inlet liquid flow channel 330 is a flow channel for transporting liquid to the first main flow channel 1 and the second main flow channel 2. The liquid in the inlet liquid flow channel 330 entering the first main flow channel 1 and the second main flow channel 2 is also called splitting.

[0119] It should be noted that in the heat management component 300 provided by the embodiment of the present application, there can be multiple main flow channels communicated with the inlet liquid flow channel 330. That is, according to specific requirements, in addition to the first main flow channel 1 and the second main flow channel 2, the heat management component 300 can also have a third, a fourth, an Nth main flow channel communicated with the inlet liquid flow channel 330. Exemplarily, as Figure 4 and Figure 5 shown, the heat management component 300 has two main flow channels communicated with the inlet liquid flow channel 330, namely the first main flow channel 1 and the second main flow channel 2, and the first main flow channel 1 is located upstream of the second main flow channel 2.

[0120] The first main flow channel 1 and the second main flow channel 2 are arranged side by side along the first direction Y, and the first main flow channel 1 and the second main flow channel 2 are in parallel. Among them, the shapes of the first main flow channel 1 and the second main flow channel 2 can be various, and the shapes of the first main flow channel 1 and the second main flow channel 2 can be the same or different. In the second direction X, the first main flow channel 1 and the second main flow channel 2 can extend in a curve, and the first main flow channel 1 and the second main flow channel 2 can also extend in a straight line. Exemplarily, as Figure 4 and Figure 5 shown, both the first main flow channel 1 and the second main flow channel 2 extend in a straight line.

[0121] Along the second direction X, the first main flow channel 1 has an opposite first inlet end and a first outlet end 1d, and the liquid enters the first main flow channel 1 from the first inlet end and flows out of the first main flow channel 1 from the first outlet end 1d. Similarly, the second main flow channel 2 has an opposite second inlet end 2c and a second outlet end 2d, and the liquid enters the first main flow channel 1 from the second inlet end 2c and flows out of the first main flow channel 1 from the second outlet end 2d.

[0122] The first inlet end is communicated with the liquid inlet flow channel 330 through the first group of flow channels 5, which means that the first group of flow channels 5 conducts the first inlet end and the liquid inlet flow channel 330. Understandably, the first group of flow channels 5 is located between the first inlet end and the liquid inlet flow channel 330, and the liquid in the liquid inlet flow channel 330 passes through the first group of flow channels 5 and then enters the first main flow channel 1. It can be understood that the cross-sectional area of the first group of flow channels 5 will affect the size of the liquid flow rate in the first main flow channel 1, and the liquid flow rate in the first main flow channel 1 is related to the size of the first group of flow channels 5.

[0123] The second inlet end 2c is communicated with the liquid inlet flow channel 330 through the second group of flow channels 6, which means that the second group of flow channels 6 conducts the second inlet end 2c and the liquid inlet flow channel 330. Understandably, the second group of flow channels 6 is located between the second inlet end 2c and the liquid inlet flow channel 330, and the liquid in the liquid inlet flow channel 330 passes through the second group of flow channels 6 and then enters the second main flow channel 2. It can be understood that the cross-sectional area of the second group of flow channels 6 will affect the size of the liquid flow rate in the second main flow channel 2, and the liquid flow rate in the second main flow channel 2 is related to the size of the second group of flow channels 6.

[0124] The first group of flow channels 5 includes at least one first sub-flow channel 5a. Understandably, the first sub-flow channel 5a can be one or more. If the first sub-flow channel 5a is one, the cross-sectional area of the first sub-flow channel 5a is the sum of the cross-sectional areas of the first group of flow channels 5; if the first sub-flow channel 5a is one, the sum of the cross-sectional areas of the multiple first sub-flow channels 5a is the sum of the cross-sectional areas of the first group of flow channels 5.

[0125] The second set of flow channels 6 includes at least one second shunt flow channel 6a. Understandably, the second shunt flow channel 6a can be one or more. If the second shunt flow channel 6a is one, the cross-sectional area of the second shunt flow channel 6a is the sum of the cross-sectional areas of the second set of flow channels 6; if the second shunt flow channel 6a is multiple, the sum of the cross-sectional areas of the multiple second shunt flow channels 6a is the sum of the cross-sectional areas of the second set of flow channels 6.

[0126] If the cross-section of the first shunt flow channel 5a or the second shunt flow channel 6a is rectangular, the length multiplied by the width of the cross-section is the cross-sectional area of the first shunt flow channel 5a or the second shunt flow channel 6a; if the cross-section of the first shunt flow channel 5a or the second shunt flow channel 6a is circular, measure the corresponding radius r of the circle, and according to the calculation formula of the circular area πr 2 the cross-sectional area of the first shunt flow channel 5a or the second shunt flow channel 6a can be obtained; if the cross-section of the first shunt flow channel 5a or the second shunt flow channel 6a is irregular, the cutting and patching method or an area measuring instrument can be used to obtain the cross-sectional area of the first shunt flow channel 5a or the second shunt flow channel 6a.

[0127] The heat management component 300 can be integrally formed, or the heat management component 300 can be prepared in separate parts. Optionally, the heat management component 300 is prepared in separate parts. Specifically, the heat management component 300 includes a first plate body and a second plate body arranged in a stacked manner. A groove is stamped on one side of the first plate body facing the second plate body, and the first plate body covers the groove to form a flow channel for accommodating liquid.

[0128] Since the first main flow channel 1 is upstream of the second main flow channel 2, usually the liquid flow rate in the first main flow channel 1 is greater than the liquid flow rate in the second main flow channel, resulting in uneven flow rates in the heat management component 300. In order to balance the liquid flow rate in the first main flow channel 1 and the liquid flow rate in the second flow channel, the cross-sectional area of the second set of flow channels 6 needs to be greater than the cross-sectional area of the first set of flow channels 5. Among them, a larger cross-sectional area of the flow channel means a larger liquid flow rate at that place, and the higher the liquid flow rate.

[0129] In this embodiment, the first set of flow channels 5 connects the first main flow channel 1 with the liquid inlet flow channel 330, and the first set of flow channels 5 guides the liquid into the first main flow channel 1. The second set of flow channels 6 connects the second main flow channel 2 with the liquid inlet flow channel 330, and the first set of flow channels 5 guides the liquid into the second main flow channel 2. The second set of flow channels 6 is located downstream of the first set of flow channels 5, and the sum of the cross-sectional areas of the second set of flow channels 6 is greater than the sum of the cross-sectional areas of the first set of flow channels 5. In this way, the liquid flow rate in the second main flow channel 2 can be increased, the liquid flow rate of the liquid entering the second main flow channel 2 can be increased, the difference between the liquid flow rate in the first main flow channel 1 and the liquid flow rate in the second main flow channel 2 can be reduced, so that the liquid flow rates distributed to the first main flow channel 1 and the second main flow channel 2 are more uniform, thereby improving the flow equalization of the heat management component 300, improving the heat exchange effect of the heat management component 300, improving the cycling performance of the battery cell 10, and improving the reliability of the battery 100.

[0130] In some embodiments, the first direction Y may be perpendicular to the second direction X.

[0131] The following elaborates in detail on the specific implementation manner in which the sum of the cross-sectional areas of the second set of flow channels 6 is greater than the sum of the cross-sectional areas of the first set of flow channels 5.

[0132] Refer to Figure 4 and Figure 5 In some embodiments, the number of the first shunt channels 5a is one, the number of the second shunt channels 6a is one, and the cross-sectional area of the second shunt channel 6a is greater than that of the first shunt channel 5a.

[0133] Understandably, in this embodiment, the cross-sectional area of the first shunt channel 5a is the sum of the cross-sectional areas of the first set of flow channels 5, and the cross-sectional area of the second shunt channel 6a is the sum of the cross-sectional areas of the second set of flow channels 6.

[0134] When the depth of the first shunt channel 5a is equal to the depth of the second shunt channel 6a, the width of the second shunt channel 6a can be controlled to be greater than the width of the first shunt channel 5a, so as to achieve that the sum of the cross-sectional areas of the second set of flow channels 6 is greater than the sum of the cross-sectional areas of the first set of flow channels 5. Wherein, the depth of the first flow channel is the depth of the first flow channel in the thickness direction of the heat management component 300, and the thickness direction of the heat management component 300 is the direction perpendicular to the plane formed by the first direction Y and the second direction X.

[0135] Of course, when the width of the first shunt channel 5a is equal to the width of the second shunt channel 6a, the depth of the second shunt channel 6a can be controlled to be greater than the depth of the first shunt channel 5a, so as to achieve that the sum of the cross-sectional areas of the second set of flow channels 6 is greater than the sum of the cross-sectional areas of the first set of flow channels 5.

[0136] In this embodiment, one first shunt channel 5a introduces liquid into the first main flow channel 1, and one second shunt channel 6a introduces liquid into the second main flow channel 2. By making the cross-sectional area of the second shunt channel 6a greater than that of the first shunt channel 5a, the sum of the cross-sectional areas of the second set of flow channels 6 is greater than the cross-sectional area of the first shunt channel 5a. The number of the second shunt channels 6a is small, which can reduce the manufacturing difficulty of the heat management component 300.

[0137] Refer to Figure 6 In some embodiments, when the number of the first shunt channels 5a is one and the number of the second shunt channels 6a is one, along the first direction Y, the width of the first shunt channel 5a is W1, and the width of the second shunt channel 6a is W2, satisfying 10 mm ≤ W1 ≤ 20 mm.

[0138] 10mm ≤ W1. The first flow channel 5a will not be too narrow, which can relieve the pressure drop of the liquid in the first flow channel 5a; W1 ≤ 20mm. The first flow channel 5a will not be too wide, so that the liquid flow rate in the first flow channel 5a will not be too large, which is beneficial to improving the flow uniformity of the heat management component 300. Therefore, 10mm ≤ W1 ≤ 20mm can balance the pressure drop and flow uniformity of the heat management component 300.

[0139] Exemplarily, W1 can be 10mm, 12mm, 14mm, 16mm, 17mm, 19mm, 20mm, and any value therebetween.

[0140] Referring to Figure 6 , in some embodiments, it satisfies 15mm ≤ W2 ≤ 25mm.

[0141] 15mm ≤ W2. The second flow channel 6a will not be too narrow, which can relieve the pressure drop of the liquid in the second flow channel 6a and there is a large liquid flow rate in the second flow channel 6a; W2 ≤ 25mm. The second flow channel 6a will not be too large, and a heat management component 300 with a smaller volume can be obtained. Therefore, 15mm ≤ W2 ≤ 25mm can balance the pressure drop and volume of the heat management component 300.

[0142] Exemplarily, W2 can be 15mm, 17mm, 19mm, 22mm, 23mm, 24mm, 25mm, and any value therebetween.

[0143] Referring to Figure 7 and Figure 8 Referring to Figure 7 and Figure 8 , Figure 7 is a schematic diagram of the internal structure of the heat management component 300 according to some other embodiments of the present application; Figure 8 is Figure 7 a schematic diagram of the liquid flow direction in the heat management component 300 shown. In some other embodiments, the number of the first flow channels 5a is multiple, and the multiple first flow channels 5a are arranged at intervals along the first direction Y. The number of the second flow channels 6a is multiple, and the multiple second flow channels 6a are arranged at intervals along the first direction Y. The sum of the cross-sectional areas of all the second flow channels 6a is greater than the sum of the cross-sectional areas of all the first flow channels 5a.

[0144] That is, both the first flow channel 5a and the second flow channel 6a are multiple. Among them, the number of the first flow channels 5a can be two, three, four, etc. The number of the second flow channels 6a can be two, three, four, etc. It should be noted that the number of the first flow channels 5a and the number of the second flow channels 6a can be the same or different. Exemplarily, in Figure 7 and Figure 8 , the number of the first flow channels 5a and the number of the second flow channels 6a are both two.

[0145] The sum of the areas of the multiple first flow channels 5a can obtain the sum of the cross-sectional areas of the first group of flow channels. The sum of the areas of the multiple second flow channels 6a can obtain the sum of the cross-sectional areas of the second group of flow channels.

[0146] In this embodiment, the liquid is introduced into the first main flow channel 1 through the multiple first flow channels 5a, and the liquid is introduced into the second main flow channel 2 through the multiple second flow channels 6a. The number of the first flow channels 5a and the second flow channels 6a is multiple, which is convenient for arranging the first flow channels 5a and the second flow channels 6a at different positions according to needs, so as to improve the flow uniformity of the heat management component 300 and reduce the manufacturing difficulty of the heat management component 300.

[0147] In some other embodiments, the number of the first flow channels 5a is multiple, the multiple first flow channels 5a are arranged at intervals along the first direction Y, the number of the second flow channels 6a is one, and the cross-sectional area of the second flow channel 6a is larger than the sum of the cross-sectional areas of all the first flow channels 5a.

[0148] Among them, the widths of the multiple first flow channels 5a can be the same or different, and the widths of the multiple second flow channels 6a can be the same or different.

[0149] In this embodiment, the liquid is introduced into the first main flow channel 1 through the multiple first flow channels 5a, and the liquid is introduced into the second main flow channel 2 through one second flow channel 6a, so as to improve the flow uniformity of the heat management component 300.

[0150] In some other embodiments, the number of the first flow channels 5a is one, the number of the second flow channels 6a is multiple, the multiple second flow channels 6a are arranged at intervals along the first direction Y, and the sum of the cross-sectional areas of all the second flow channels 6a is larger than the cross-sectional area of the first flow channel 5a.

[0151] In this embodiment, the liquid is introduced into the first main flow channel 1 through one first flow channel 5a, and the liquid is introduced into the second main flow channel 2 through the multiple second flow channels 6a, so as to improve the flow uniformity of the heat management component 300.

[0152] The above embodiments illustrate some specific implementation manners in which the sum of the cross-sectional areas of the second group of flow channels 6 is larger than the sum of the cross-sectional areas of the first group of flow channels 5.

[0153] Refer to Figure 4 and Figure 5 , in some embodiments, the heat management component 300 further has a liquid inlet 310, and the liquid inlet 310 is arranged at one end of the liquid inlet flow channel 330.

[0154] Since the second group of flow channels 6 is located upstream of the first group of flow channels 5, therefore, compared with the second group of flow channels 6, the first group of flow channels 5 will be closer to the liquid inlet 310.

[0155] Exemplarily, as Figure 4 and Figure 5 shown, the liquid inlet 310 is provided above the liquid inlet channel 330, and the first main channel 1 is provided above the second main channel 2.

[0156] Referring to Figure 9 and Figure 10 , Figure 9 FIG. is a schematic internal structure diagram of the heat management component 300 according to some other embodiments of the present application; Figure 10 is Figure 9 shown in FIG. is a schematic diagram of the liquid flow direction in the heat management component 300. In some embodiments, the heat management component 300 further has a first communication channel 7. Along the first direction Y, the first communication channel 7 is provided between the first inlet end and the second inlet end 2c and is respectively communicated with the first inlet end and the second inlet end 2c.

[0157] Exemplarily, as Figure 9 and Figure 10 shown, along the first direction Y, the first communication channel 7 is located between the first main channel 1 and the second main channel 2, and the first communication channel 7 extends along the first direction Y.

[0158] In this embodiment, the first communication channel 7 is respectively communicated with the first inlet end and the second inlet end 2c. Except for the second group of channels 6, the liquid can also enter the second main channel 2 through the first communication channel 7. In this way, the flow resistance can be reduced, the pressure drop of the liquid can be alleviated, the flow rate of the liquid in the heat management can be increased, and thus the heat exchange effect of the heat management component 300 can be improved.

[0159] Figure 11 FIG. is a schematic internal structure diagram of the heat management component 300 according to still some other embodiments of the present application; Figure 12 is Figure 11 shown in FIG. is a schematic diagram of the liquid flow direction in the heat management component 300.

[0160] Referring to Figure 11 and Figure 12 , in some embodiments, the heat management component 300 further has a third group of channels 350. The third group of channels 350 includes at least one third diversion channel 350a. The first communication channel 7 is communicated with the liquid inlet channel 330 through the third group of channels 350; along the second direction X, the projection of the third group of channels 350 falls within the projection of the first communication channel 7.

[0161] Understandably, the third group of channels 350 communicates the first communication channel 7 with the liquid inlet channel 330, and the third group of channels 350 can introduce the liquid into the first communication channel 7. That is, not only the first group of channels 5 and the second group of channels 6 can divert the liquid inlet channel 330, but also the third group of channels 350 can divert the liquid inlet channel 330.

[0162] Among them, the number of the third diversion channels 350a can be one or more.

[0163] Exemplarily, as Figure 11 and Figure 12 shown, the number of the third diversion channels 350a is 1, and the third diversion channels 350a extend along the second direction X. After adding the third group of channels 350, part of the liquid in the first connecting channel 7 can enter the first main channel 1, and part can enter the second main channel 2.

[0164] In this embodiment, the first connecting channel 7 is communicated with the liquid inlet channel 330 through the third group of channels 350. The third diversion channels 350a can introduce the liquid into the first connecting channel 7, which can further reduce the flow resistance, relieve the pressure drop of the liquid, increase the total flow rate of the liquid in the thermal management, and thus improve the heat exchange effect of the thermal management component 300.

[0165] For the convenience of channel arrangement, in some embodiments, the first group of channels 5, the second group of channels 6 and the third group of channels 350 are parallel to each other and all extend along the second direction X.

[0166] In some embodiments, the sum of the cross-sectional areas of the third group of channels 350 is greater than the sum of the cross-sectional areas of the first group of channels 5, and the sum of the cross-sectional areas of the third group of channels 350 is less than the sum of the cross-sectional areas of the second group of channels 6.

[0167] If there is one third diversion channel 350a, the cross-sectional area of the third diversion channel 350a is the sum of the cross-sectional areas of the third group of channels 350. If there are multiple third diversion channels 350a, the sum of the cross-sectional areas of the multiple third diversion channels 350a is the sum of the cross-sectional areas of the third group of channels 350. Exemplarily, in Figure 11 and Figure 12 there is one third diversion channel 350a.

[0168] The cross-sectional area of the third diversion channel 350a can be measured by the same method as that of the first diversion channel 5a and the second diversion channel 6a. For the sake of brief description, it will not be elaborated here.

[0169] It can be understood that the cross-sectional areas of the first channel group, the third channel group and the second channel group increase in sequence. In this way, along the flow direction S1 of the liquid in the liquid inlet channel, the resistance received by the liquid decreases in sequence, which is beneficial to increasing the total flow rate of the liquid in the thermal management component 300, and thus improving the heat exchange effect of the thermal management component 300.

[0170] Referring to Figure 4 and Figure 5, in some embodiments, along the liquid flow direction S1 in the liquid inlet channel, the liquid inlet channel 330 includes a first upstream section 330a located upstream of the first set of channels 5 and a first downstream section 330b located downstream of the first set of channels 5. The second set of channels 6 is connected to the first downstream section 330b, and the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first set of channels 5.

[0171] Wherein, the first upstream section 330a and the first downstream section 330b can be arranged in a straight liquid inlet channel 330 along the first direction Y. The first upstream section 330a and the first downstream section 330b can also be arranged at an angle (as Figure 11 and ​ shown).

[0172] In this embodiment, the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first set of channels 5. In this way, the pressure drop of the liquid in the first downstream section 330b can be alleviated, and compared with the first set of channels 5, the liquid can more easily enter the first downstream section 330b, and then flow into the second main channel 2 through the second set of channels 6, further improving the flow uniformity of the heat management component 300.

[0173] Referring to ​ , in some embodiments, the width of the first downstream section 330b is W3, satisfying 15mm ≤ W3 ≤ 25mm.

[0174] When 15mm ≤ W3, the first downstream section 330b is not too narrow, and the pressure drop of the liquid in the first downstream section 330b can be alleviated. When W3 ≤ 25mm, the first downstream section 330b is not too wide, and the width of the first downstream section 330b can be reduced, so as to obtain a heat management component 300 with a smaller volume. Therefore, when 15mm ≤ W3 ≤ 25mm, the pressure drop and volume of the heat management component 300 can be taken into account.

[0175] Exemplarily, W3 can be 15mm, 16mm, 17mm, 19mm, 20mm, 22mm, 24mm, 25mm, and any value therebetween.

[0176] In some embodiments, the liquid inlet 310 is provided at one end of the first upstream section 330a away from the first downstream section 330b.

[0177] In some embodiments, the cross-sectional area of the first upstream section 330a is greater than the cross-sectional area of the first downstream section 330b, and the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first set of channels 5. In this way, the first upstream section 330a has a larger cross-sectional area, which can alleviate the pressure drop of the liquid near the liquid inlet 310, thereby increasing the total flow rate of the liquid in the heat management component 300 and improving the heat exchange effect of the heat management component 300.

[0178] In some embodiments, the first downstream section 330b extends along the first direction Y.

[0179] Wherein, the first downstream section 330b may extend linearly or may extend curvilinearly.

[0180] The first downstream section 330b extends along the first direction Y, and the arrangement directions of the first main flow channel 1 and the second main flow channel 2 are the same as the extension direction of the first downstream section 330b. In this way, it is allowed that the first downstream section 330b, the first main flow channel 1 and the second main flow channel 2 can be arranged more compactly, thereby reducing the volume of the thermal management component 300 and increasing the energy density of the battery 100 using the thermal management component 300.

[0181] In some embodiments, the first upstream section 330a is inclined relative to the first downstream section 330b.

[0182] Understandably, the first upstream section 330a and the first downstream section 330b are arranged at an included angle. Exemplarily, as ​ and ​ shown, the first upstream section 330a and the first downstream section 330b are arranged at an obtuse angle.

[0183] In this embodiment, the first upstream section 330a is inclined relative to the first downstream section 330b so that the first upstream section 330a and the first downstream section 330b are arranged at an included angle. In this way, when the lengths of the first upstream section 330a and the first downstream section 330b are certain, the overall liquid inlet flow channel 330 occupies a smaller size in the first direction Y and the second direction X, thereby obtaining a thermal management component 300 with a smaller volume and increasing the energy density of the battery 100 using the thermal management component 300.

[0184] Referring to ​ and ​ , in some embodiments, the first main flow channel 1 has a first wall 1a and a second wall 1b opposite to each other along the first direction Y, and a first flow disturbing member 410 is arranged at the first inlet end. Along the first direction Y, the first flow disturbing member 410 is spaced apart from the first wall 1a, and the first flow disturbing member 410 is spaced apart from the second wall 1b; along the second direction X, the first flow disturbing member 410 is spaced apart from the first group of flow channels 5.

[0185] In the case where the thermal management component 300 is prepared separately from a first plate body and a second plate body, and the second plate body covers the groove stamped on the first plate body to form a flow channel, the first wall 1a and the second wall 1b are two groove walls of the groove corresponding to the first main flow channel 1, and the first flow disturbing member 410 is arranged with a gap from both groove walls of the groove.

[0186] For the convenience of description, hereinafter, the first wall 1a and the second wall 1b are referred to as the edges of the first main flow channel 1. Along the first direction Y, the position between the first wall 1a and the second wall 1b is the middle part of the first main flow channel 1. When the liquid flows in the first main flow channel 1, the first wall 1a and the second wall 1b will cause resistance to the liquid flow, which will result in a low flow velocity and low flow rate at the edges of the first main flow channel 1. There is a flow velocity difference between the middle part of the first main flow channel 1 and the edges of the first flow channel, and the flow velocity of the liquid in the first main flow channel 1 is uneven, affecting the flow equalization of the heat management component 300.

[0187] In this embodiment, the first flow disturbing member 410 can divert the liquid at the first inflow end, so that the liquid can first flow towards the positions of the first wall 1a and the second wall 1b, so as to relieve the problem of uneven liquid flow velocity in the first main flow channel 1 caused by the resistance of the first wall 1a and the second wall 1b to the liquid.

[0188] In the above embodiment, the problem of uneven flow velocity in the first main flow channel 1 is improved by the first flow disturbing member 410. In addition to the first main flow channel 1, similarly, there is also a problem of uneven flow velocity in the second main flow channel 2. In order to improve the problem of uneven flow velocity in the second main flow channel 2, in some embodiments, continue to refer to ​ and ​ , the second main flow channel 2 has a third wall 2a and a fourth wall 2b opposite to each other along the first direction Y, and a second flow disturbing member 420 is arranged at the second inflow end 2c. Along the first direction Y, the second flow disturbing member 420 is arranged at an interval from the third wall 2a, and the second flow disturbing member 420 is arranged at an interval from the fourth wall 2b. Along the second direction X, the second flow disturbing member 420 is arranged at an interval from the second group of flow channels 6.

[0189] Among them, the second flow disturbing member 420 has the same function as the first flow disturbing member 410, and for the sake of simplicity, it will not be elaborated here.

[0190] In this embodiment, the second flow disturbing member 420 can divert the liquid at the second inflow end 2c, so that the liquid can first flow towards the positions of the third wall 2a and the fourth wall 2b, so as to relieve the problem of uneven liquid flow velocity in the second main flow channel 2 caused by the resistance of the third wall 2a and the fourth wall 2b to the liquid.

[0191] In order to further improve the flow equalization of the heat management component 300, in some embodiments, continue to refer to ​ and ​ , the heat management component 300 further has an outlet flow channel 340, a fourth group of flow channels 360, a fifth group of flow channels 370, a third main flow channel 3 and a fourth main flow channel 4.

[0192] The third main flow channel 3 and the fourth main flow channel 4 are arranged side by side at intervals along the first direction Y. In the second direction X, the third main flow channel 3 has a third outflow end 3c, and the fourth main flow channel 4 has a fourth outflow end 4c.

[0193] The fourth group of flow channels 360 includes at least one fourth branch flow channel 360a. The third outflow end 3c is communicated with the liquid outlet flow channel 340 through the fourth group of flow channels 360. The fifth group of flow channels 370 includes at least one fifth branch flow channel 370a. The fourth outflow end 4c is communicated with the liquid outlet flow channel 340 through the fifth group of flow channels 370. Along the second direction X, the projection of the fourth group of flow channels 360 falls within the projection of the third outflow end 3c, and the projection of the fifth group of flow channels 370 falls within the projection of the fourth outflow end 4c.

[0194] Wherein, along the liquid flow direction S2 in the liquid outlet flow channel, the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370, and the sum of the cross-sectional areas of the fourth group of flow channels 360 is greater than the sum of the cross-sectional areas of the fifth group of flow channels 370.

[0195] Such as ​ and ​ As shown, along the second direction X, the third main flow channel 3 has opposite third inflow end 3d and third outflow end 3c. Liquid enters the third main flow channel 3 from the third inflow end 3d and flows out of the third main flow channel 3 from the third outflow end 3c. Similarly, along the second direction X, the fourth main flow channel 4 has opposite fourth inflow end 4d and fourth outflow end 4c. Liquid enters the fourth main flow channel 4 from the fourth inflow end 4d and flows out of the fourth main flow channel 4 from the fourth outflow end 4c.

[0196] The third outflow end 3c is communicated with the liquid outlet flow channel 340 through the fourth group of flow channels 360. Understandably, the fourth group of flow channels 360 is located between the third outflow end 3c and the liquid outlet flow channel 340. The fourth group of flow channels 360 conducts the third outflow end 3c and the liquid outlet flow channel 340. The liquid in the third main flow channel 3 passes through the fourth group of flow channels 360 and then enters the liquid outlet flow channel 340. It can be understood that the cross-sectional area of the fourth group of flow channels 360 will affect the size of the liquid flow rate in the third main flow channel 3, and the liquid flow rate in the third main flow channel 3 is related to the size of the fourth group of flow channels 360.

[0197] The fourth outflow end 4c is communicated with the liquid outlet flow channel 340 through the fifth group of flow channels 370. Understandably, the fifth group of flow channels 370 is located between the fourth outflow end 4c and the liquid outlet flow channel 340. The fifth group of flow channels 370 conducts the fourth outflow end 4c and the liquid outlet flow channel 340. The liquid in the fourth main flow channel 4 passes through the fifth group of flow channels 370 and then enters the liquid outlet flow channel 340. It can be understood that the cross-sectional area of the fifth group of flow channels 370 will affect the size of the liquid flow rate in the fourth main flow channel 4, and the liquid flow rate in the fourth main flow channel 4 is related to the size of the fifth group of flow channels 370.

[0198] The fourth group of flow channels 360 includes at least one fourth branch flow channel 360a. Understandably, the fourth branch flow channel 360a can be one or more. If the fourth branch flow channel 360a is one (such as ​ and​ As shown (in the figure), the cross-sectional area of the fourth flow divider channel 360a is the sum of the cross-sectional areas of the fourth group of flow channels 360; if there are multiple fourth flow divider channels 360a (such as ​ and ​ shown), the sum of the cross-sectional areas of the multiple fourth flow divider channels 360a gives the sum of the cross-sectional areas of the first group of flow channels 5.

[0199] The fifth group of flow channels 370 includes at least one fifth flow divider channel 370a. Understandably, the fifth flow divider channel 370a can be one or multiple. If the fifth flow divider channel 370a is one (such as ​ and ​ shown), the cross-sectional area of the fifth flow divider channel 370a is the sum of the cross-sectional areas of the fifth group of flow channels 370; if there are multiple fifth flow divider channels 370a (such as ​ and ​ shown), the sum of the cross-sectional areas of the multiple fifth flow divider channels 370a gives the sum of the cross-sectional areas of the fifth group of flow channels 370.

[0200] The sum of the cross-sectional areas of the fourth group of flow channels 360 is greater than the sum of the cross-sectional areas of the fifth group of flow channels 370, that is, the total sum of the cross-sectional areas of all the fourth flow divider channels 360a is greater than the total sum of the cross-sectional areas of all the fifth flow divider channels 370a.

[0201] It should be noted that according to specific setting requirements, the relative positions of the third main flow channel 3, the fourth main flow channel 4 and the first main flow channel 1, the second main flow channel 2 are different, and the relative positions of the liquid outlet flow channel 340 and the liquid inlet flow channel 330 will also be different. Therefore, the liquid flow direction S2 in the liquid outlet flow channel can be the same as the liquid flow direction S1 in the liquid inlet flow channel, or the liquid flow direction S2 in the liquid outlet flow channel can be different from the liquid flow direction S1 in the liquid inlet flow channel. Exemplarily, as ​ and ​ shown, the liquid outlet flow channel 340 and the liquid inlet flow channel 330 are arranged on the same side of the second direction X of the heat management component 300, and the liquid flow direction S2 in the liquid outlet flow channel is the same as the liquid flow direction S1 in the liquid inlet flow channel.

[0202] The cross-sectional areas of the fourth flow divider channel 360a and the fifth flow divider channel 370a can be measured using the same measurement method as the cross-sections of the first flow divider channel 5a and the second flow divider channel 6a. For the sake of brevity, it will not be elaborated here.

[0203] Since the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370, the third main flow channel 3 is located upstream of the fourth main flow channel 4. Generally, there is also a problem of uneven flow rate between the third main flow channel 3 and the fourth main flow channel 4, and the flow rate of the liquid in the third main flow channel 3 will be greater than the flow rate of the liquid in the fourth main flow channel 4. Therefore, it is necessary to balance the flow rates of the liquid in the third main flow channel 3 and the fourth main flow channel 4.

[0204] In this embodiment, the fourth group of flow channels 360 connects the third flow channel and the liquid outlet flow channel 340. The fourth group of flow channels 360 can export the liquid from the third main flow channel 3. The fifth group of flow channels 370 connects the fourth main flow channel 4 and the liquid outlet flow channel 340. The fifth group of flow channels 370 can export the liquid from the fourth main flow channel 4. The fifth group of flow channels 370 is located downstream of the fourth group of flow channels 360, and the sum of the cross-sectional areas of the fifth group of flow channels 370 is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360. In this way, the flow rate of the liquid flowing out of the fourth main flow channel 4 can be increased, the difference between the flow rate of the liquid in the third main flow channel 3 and the flow rate of the liquid in the fourth main flow channel 4 can be reduced, so that the flow rates of the liquid distributed to the third main flow channel 3 and the fourth main flow channel 4 are more uniform, thereby further improving the flow equalization of the heat management component 300, improving the heat exchange effect of the heat management component 300, improving the cycling performance of the battery cell 10, and improving the reliability of the battery 100.

[0205] Refer to ​ and ​ , in some embodiments, the first main flow channel 1, the second main flow channel 2, the third main flow channel 3, and the fourth main flow channel 4 are arranged in sequence along the first direction Y.

[0206] Exemplarily, the first main flow channel 1, the second main flow channel 2, the third main flow channel 3, and the fourth main flow channel 4 all extend linearly along the second direction X, and the extension lengths are equal. The first main flow channel 1, the second main flow channel 2, the third main flow channel 3, and the fourth main flow channel 4 are arranged in sequence along the first.

[0207] In this embodiment, the first main flow channel 1, the second main flow channel 2, the third main flow channel 3, and the fourth main flow channel 4 are arranged in sequence along the first direction Y, which can reduce the size occupation of the flow channels in the second direction X, allow the flow channel layout to be more compact, thereby obtaining a heat management component 300 with a smaller volume, and improving the energy density of the battery using the heat management component.

[0208] Refer to others 4 and ​, in some embodiments, in the second direction X, the first main flow channel 1 has a first outflow end 1d opposite to the first inflow end, the second main flow channel 2 has a second outflow end 2d opposite to the second inflow end 2c, the third main flow channel 3 has a third inflow end 3d opposite to the third outflow end 3c, and the fourth main flow channel 4 has a fourth inflow end 4d opposite to the fourth outflow end 4c; the heat management component 300 further has a second communication flow channel 8, and the second communication flow channel 8 communicates with the first outflow end 1d, the second outflow end 2d, the third inflow end 3d, and the fourth inflow end 4d.

[0209] Understandably, one end of the first main flow channel 1 communicates with the second communication flow channel 8, and the other end of the first main flow channel 1 communicates with the liquid inlet flow channel 330 through the first group of flow channels 5. One end of the second main flow channel 2 communicates with the second communication flow channel 8, and the other end of the second main flow channel 2 communicates with the liquid inlet flow channel 330 through the second group of flow channels 6. One end of the third main flow channel 3 communicates with the second communication flow channel 8, and the other end of the third main flow channel 3 communicates with the liquid outlet flow channel 340 through the fourth group of flow channels 360; one end of the fourth main flow channel 4 communicates with the second communication flow channel 8, and the other end of the fourth main flow channel 4 communicates with the liquid outlet flow channel 340 through the fifth group of flow channels 370.

[0210] In this embodiment, the first outflow end 1d, the second outflow end 2d, the third inflow end 3d, and the fourth inflow end 4d are respectively communicated with the second communication flow channel 8, so that the second communication flow channel 8 can converge the liquids flowing out of the first main flow channel 1 and the second main flow channel 2, and divert the liquids to the third main flow channel 3 and the fourth main flow channel 4, thereby balancing the liquid flow rates in the first main flow channel 1, the second main flow channel 2, the third main flow channel 3, and the fourth main flow channel 4, further improving the flow equalization of the heat management component 300, improving the heat exchange effect of the heat management component 300, improving the cycling performance of the battery cell 10, and improving the reliability of the battery 100.

[0211] In some embodiments, the second communication flow channel 8 extends along the first direction.

[0212] In some embodiments, the heat management component 300 has a liquid outlet 320, and the liquid outlet 320 is arranged at one end of the liquid outlet flow channel 340.

[0213] It should be understood that the fifth group of flow channels 370 is downstream of the fourth group of flow channels 360, and the liquid outlet 320 is downstream of the fifth group of flow channels 370.

[0214] Refer to ​ and ​ , in some embodiments, the heat management component 300 further has a third communication flow channel 9. Along the first direction Y, the third communication flow channel 9 is arranged between the third outflow end 3c and the fourth outflow end 4c, and is respectively communicated with the third outflow end 3c and the fourth outflow end 4c.

[0215] Exemplarily, as​ and ​ As shown in ​ , the third connecting flow channel 9 is located between the third main flow channel 3 and the fourth main flow channel 4, and the third connecting flow channel 9 extends linearly along the first direction Y.

[0216] In this embodiment, the third connecting flow channel 9 is respectively connected to the third outflow end 3c and the fourth outflow end 4c. It can be understood that, except for the fourth group of flow channels 360, the third connecting flow channel 9 can also lead out the liquid in the third main flow channel 3. In this way, the flow resistance can be further reduced, the pressure drop of the liquid can be alleviated, the total flow rate of the liquid in the thermal management can be increased, and thus the heat exchange effect of the thermal management component 300 can be improved.

[0217] Referring to ​ and ​ , in some embodiments, the thermal management component 300 further has a sixth group of flow channels 380. The sixth group of flow channels 380 includes at least one sixth shunt flow channel 380a. The third connecting flow channel 9 is connected to the liquid outlet flow channel 340 through the sixth group of flow channels 380; along the second direction X, the projection of the sixth group of flow channels 380 falls within the projection of the third connecting flow channel 9.

[0218] It can be understood that the sixth group of flow channels 380 connects the third connecting flow channel 9 and the liquid outlet flow channel 340, and the sixth group of flow channels 380 can lead out the liquid from the third connecting flow channel 9. After adding the sixth group of flow channels 380, part of the liquid in the third main flow channel 3 can enter the sixth group of flow channels 380, and part of the liquid in the fourth main flow channel 4 can also enter the sixth group of flow channels 380.

[0219] Among them, the number of the sixth shunt flow channels 380a can be one or more. Exemplarily, in ​ and ​ , the number of the sixth shunt flow channels 380a is one.

[0220] Exemplarily, as shown in ​ and ​ , the number of the sixth shunt flow channels 380a is one, the sixth group of flow channels 380 extends along the second direction X, and the second group of flow channels 6, the fourth group of flow channels 360 and the fifth group of flow channels 370 are parallel to each other.

[0221] In this embodiment, the third connecting flow channel 9 is connected to the liquid outlet flow channel 340 through the sixth group of flow channels 380. The sixth group of flow channels 380 can lead out the liquid from the third connecting flow channel 9, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, increase the total flow rate of the liquid in the thermal management, and thus improve the heat exchange effect of the thermal management component 300. In addition, it can also alleviate the occurrence of backflow and turbulent flow phenomena caused by the large liquid flow rate and too fast flow velocity in the third main flow channel 3, resulting in the liquid backflowing into the fourth main flow channel 4.

[0222] Among them, backflow refers to the phenomenon that the liquid in the third main flow channel 3 flows out from the third outlet end 3c and then enters the fourth main flow channel 4 through the fourth outlet end 4c because it cannot be discharged in time.

[0223] In some embodiments, the sum of the cross-sectional areas of the sixth set of flow channels 380 is greater than the sum of the cross-sectional areas of the fourth set of flow channels 360, and the sum of the cross-sectional areas of the sixth set of flow channels 380 is less than the sum of the cross-sectional areas of the fifth set of flow channels 370.

[0224] If the sixth shunt flow channel 380a is one, the cross-sectional area of the sixth shunt flow channel 380a is the sum of the cross-sectional areas of the sixth set of flow channels 380. If the sixth shunt flow channel 380a is multiple, the sum of the cross-sectional areas of the multiple sixth shunt flow channels 380a is the sum of the cross-sectional areas of the sixth set of flow channels 380.

[0225] The cross-sectional area of the sixth shunt flow channel 380a can be measured by the same measurement method as the first shunt flow channel 5a and the second shunt flow channel 6a. For the sake of brief description, it will not be elaborated here.

[0226] In this embodiment, the cross-sectional areas of the fourth flow channel group, the sixth flow channel group, and the fifth flow channel group increase in sequence. In this way, along the liquid flow direction S2 in the liquid outlet flow channel, the resistance received by the liquid decreases in sequence, which is beneficial to increasing the flow rate of the liquid in the heat management component 300, beneficial to improving the flow uniformity of the heat management component 300, and thus improving the heat exchange effect of the heat management component 300.

[0227] Refer to ​ , in some embodiments, along the liquid flow direction S2 in the liquid outlet flow channel, the liquid outlet flow channel 340 includes a second upstream section 340a located upstream of the fifth set of flow channels 370 and a second downstream section 340b located downstream of the fifth set of flow channels 370. The fourth set of flow channels 360 is connected to the second upstream section 340a, and the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth set of flow channels 360.

[0228] It can be understood that the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth set of flow channels 360, and the second upstream section 340a is larger, so the pressure of the liquid in the second upstream section 340a is less.

[0229] Among them, the arrangement forms of the second upstream section 340a and the second downstream section 340b can be various. For example, the second upstream section 340a and the second downstream section 340b can be arranged along the first direction Y to form a straight liquid outlet channel 340. Another example is that the second upstream section 340a and the second downstream section 340b are arranged at an angle. At this time, the second upstream section 340a and the second downstream section 340b are arranged in a broken line. The liquid in the second upstream section 340a needs to pass through a corner to enter the second downstream section 340b. The corner refers to the turning position between the second upstream section 340a and the second downstream section 340b. Exemplarily, as ​ and ​ shown, the second upstream section 340a and the second downstream section 340b are arranged at an obtuse angle, which can reduce the resistance to the liquid at the turning point.

[0230] In this embodiment, the cross-sectional area of the second downstream section 340b is larger than the sum of the cross-sectional areas of the fourth group of channels 360. In this way, compared with the liquid in the fourth group of channels 360, the pressure on the liquid in the second upstream section 340a is smaller. The second upstream section 340a can relieve the pressure drop, so as to obtain a thermal management component 300 with a smaller overall pressure drop, which is beneficial to improving the heat exchange effect of the thermal management component 300.

[0231] In some embodiments, the cross-sectional area of the second downstream section 340b is larger than the cross-sectional area of the second upstream section 340a, and the cross-sectional area of the second upstream section 340a is larger than the sum of the cross-sectional areas of the fourth group of channels 360. Further relieve the pressure drop of the thermal management component 300.

[0232] In some embodiments, the liquid outlet 320 is arranged on the second downstream section 340b. One end of the second downstream section 340b is connected to the second upstream section 340a, and the other end of the second downstream section 340b is connected to the liquid outlet 320.

[0233] Referring to ​ and ​ , in some embodiments, the third main channel 3 has a fifth wall 3a and a sixth wall 3b opposite to each other along the first direction Y, and a third flow disturbing member 430 is arranged at the third outflow end 3c; along the first direction Y, the third flow disturbing member 430 is spaced from the fifth wall 3a, and the third flow disturbing member 430 is spaced from the sixth wall 3b; along the second direction X, the third flow disturbing member 430 is spaced from the fourth group of channels 360.

[0234] When the thermal management component 300 is prepared by separately forming a first plate body and a second plate body, and the second plate body covers the groove stamped on the first plate body to form a channel, the fifth wall 3a and the sixth wall 3b are two groove walls of the groove corresponding to the third main channel 3, and the third flow disturbing member 430 is arranged with a gap from both groove walls of the groove.

[0235] For convenience of description, hereinafter, the fifth wall 3a and the sixth wall 3b are referred to as the edges of the third main flow channel 3. Along the first direction Y, the position between the fifth wall 3a and the sixth wall 3b is the middle part of the third main flow channel 3. When the liquid flows in the third main flow channel 3, the fifth wall 3a and the sixth wall 3b will cause resistance to the liquid flow, which will result in a low flow velocity and low flow rate at the edges of the third main flow channel 3. There is a flow velocity difference between the middle part of the third main flow channel 3 and the edges of the third flow channel, and the liquid flow velocity in the third main flow channel 3 is uneven, affecting the flow equalization of the heat management component 300. Therefore, the flow velocity of the liquid at the edges of the third main flow channel 3 needs to be increased.

[0236] In this embodiment, the third flow disturbing member 430 can divert the liquid at the third outflow end 3c, so that the liquid can first flow to the positions of the fifth wall 3a and the sixth wall 3b and then flow out of the third main flow channel 3, so as to relieve the problem of uneven liquid flow velocity in the third main flow channel 3 caused by the resistance of the fifth wall 3a and the sixth wall 3b to the liquid.

[0237] Similarly, there is also a problem of uneven flow velocity in the fourth main flow channel 4. In order to improve the problem of uneven flow velocity in the fourth main flow channel 4, in some embodiments, referring to ​ and ​ , the fourth main flow channel 4 has a seventh wall 4a and an eighth wall 4b opposite to each other along the first direction Y, and a fourth flow disturbing member 440 is arranged at the fourth outflow end 4c; along the first direction Y, the fourth flow disturbing member 440 is arranged at an interval from the seventh wall 4a, and the fourth flow disturbing member 440 is arranged at an interval from the eighth wall 4b; along the second direction X, the fourth flow disturbing member 440 is arranged at an interval from the fifth group of flow channels 370.

[0238] Among them, the fourth flow disturbing member 440 has the same function as the third flow disturbing member 430. For the sake of brevity, it will not be described in detail here.

[0239] In this embodiment, the fourth flow disturbing member 440 can divert the liquid at the fourth outflow end 4c, so that the liquid can first flow to the positions of the seventh wall 4a and the eighth wall 4b and then flow out of the fourth main flow channel 4, so as to relieve the problem of uneven liquid flow velocity in the fourth main flow channel 4 caused by the resistance of the seventh wall 4a and the eighth wall 4b to the liquid.

[0240] The embodiment of the present application further provides a battery 100, and the battery 100 includes the heat management component 300 provided in any of the above embodiments.

[0241] The embodiment of the present application further provides an electrical device, and the electrical device includes the battery 100 provided in any of the above embodiments, and the battery 100 is used to supply power to the electrical device.

[0242] An embodiment of the present application further provides a thermal management component 300, which has a liquid inlet 310, a liquid outlet 320, a liquid inlet channel 330, a liquid outlet channel 340, a first main channel 1, a second main channel 2, a third main channel 3, a fourth main channel 4, a first set of channels 5, a second set of channels 6, a third set of channels 350, a fourth set of channels 360, a fifth set of channels 370, a sixth set of channels 380, a first connecting channel 7, a second connecting channel 8, and a third connecting channel 9.

[0243] The first main channel 1, the second main channel 2, the third main channel 3, and the fourth main channel 4 are arranged side by side at intervals along the first direction Y.

[0244] In the second direction X, the first main channel 1 has a first inflow end and a first outflow end 1d that are opposite to each other, the second main channel 2 has a second inflow end 2c and a second outflow end 2d that are opposite to each other, the third main channel 3 has a third inflow end 3d and a third outflow end 3c that are opposite to each other, the fourth main channel 4 has a fourth inflow end 4d and a fourth outflow end 4c that are opposite to each other, and the second direction X is perpendicular to the first direction Y. The second connecting channel 8 connects the first outflow end 1d, the second outflow end 2d, the third inflow end 3d, and the fourth inflow end 4d.

[0245] The first set of channels 5 includes at least one first sub-channel 5a, and the first inflow end is connected to the liquid inlet channel 330 through the first set of channels 5. The second set of channels 6 includes at least one second sub-channel 6a, and the second inflow end 2c is connected to the liquid inlet channel 330 through the second set of channels 6. Along the second direction X, the projection of the first set of channels 5 falls within the projection of the first inflow end, and the projection of the second set of channels 6 falls within the projection of the second inflow end 2c. The first connecting channel 7 is arranged between the first inflow end and the second inflow end 2c and is respectively connected to the first inflow end and the second inflow end 2c. The third set of channels 350 includes at least one third sub-channel 350a, and the first connecting channel 7 is connected to the liquid inlet channel 330 through the third set of channels 350; along the second direction X, the projection of the third set of channels 350 falls within the projection of the first connecting channel 7. Among them, along the liquid flow direction S1 in the liquid inlet channel, the second set of channels 6 is located downstream of the first set of channels 5, the third set of channels 350 is located between the first set of channels 5 and the second set of channels 6, the sum of the cross-sectional areas of the third set of channels 350 is greater than the sum of the cross-sectional areas of the first set of channels 5, and the sum of the cross-sectional areas of the third set of channels 350 is less than the sum of the cross-sectional areas of the second set of channels 6.

[0246] The fourth group of flow channels 360 includes at least one fourth sub-flow channel 360a. The third outflow end 3c is communicated with the liquid outlet flow channel 340 through the fourth group of flow channels 360. The fifth group of flow channels 370 includes at least one fifth sub-flow channel 370a. The fourth outflow end 4c is communicated with the liquid outlet flow channel 340 through the fifth group of flow channels 370. Along the second direction X, the projection of the fourth group of flow channels 360 falls within the projection of the third outflow end 3c, and the projection of the fifth group of flow channels 370 falls within the projection of the fourth outflow end 4c. The sixth group of flow channels 380 includes at least one sixth sub-flow channel 380a. The third communication flow channel 9 is communicated with the liquid outlet flow channel 340 through the sixth group of flow channels 380. Along the second direction X, the projection of the sixth group of flow channels 380 falls within the projection of the third communication flow channel 9. Wherein, along the liquid flow direction S2 in the liquid outlet flow channel, the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370, the sixth group of flow channels 380 is located between the fourth group of flow channels 360 and the fifth group of flow channels 370, the sum of the cross-sectional areas of the sixth group of flow channels 380 is greater than the sum of the cross-sectional areas of the fifth group of flow channels 370, and the sum of the cross-sectional areas of the sixth group of flow channels 380 is less than the sum of the cross-sectional areas of the fifth group of flow channels 370.

[0247] The liquid inlet section includes a first upstream section 330a and a first downstream section 330b. Along the liquid flow direction S1 in the liquid inlet flow channel, the first upstream section 330a is located upstream of the liquid inlet flow channel 330 including the first group of flow channels 5, and the first downstream section 330b is located downstream of the first group of flow channels 5. The second group of flow channels 6 is connected to the first downstream section 330b, and the cross-sectional area of the first downstream section 330b is greater than the sum of the cross-sectional areas of the first group of flow channels 5. The first upstream section 330a and the first downstream section 330b are arranged at an obtuse angle.

[0248] Along the liquid flow direction S2 in the liquid outlet flow channel, the liquid outlet flow channel 340 includes a second upstream section 340a and a second downstream section 340b. The second upstream section 340a is located upstream of the fifth group of flow channels 370 and the second downstream section 340b is located downstream of the fifth group of flow channels 370. The fourth group of flow channels 360 is connected to the second upstream section 340a, and the cross-sectional area of the second upstream section 340a is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360. The second upstream section 340a and the second downstream section 340b are arranged at an obtuse angle.

[0249] The liquid inlet 310 is arranged at one end of the first upstream section 330a far from the first downstream section 330b, and the liquid outlet 320 is arranged at one end of the second downstream section 340b far from the second upstream section 340a.

[0250] The first main flow channel 1 has a first wall 1a and a second wall 1b that are opposite to each other along the first direction Y, and a first flow-in end is provided with a first flow spoiler 410; along the first direction Y, the first flow spoiler 410 is spaced apart from the first wall 1a, and the first flow spoiler 410 is spaced apart from the second wall 1b; along the second direction X, the first flow spoiler 410 is spaced apart from the first group of flow channels 5.

[0251] The second main flow channel 2 has a third wall 2a and a fourth wall 2b that are opposite to each other along the first direction Y, and a second flow-in end 2c is provided with a second flow spoiler 420. Along the first direction Y, the second flow spoiler 420 is spaced apart from the third wall 2a, and the second flow spoiler 420 is spaced apart from the fourth wall 2b. Along the second direction X, the second flow spoiler 420 is spaced apart from the second group of flow channels 6.

[0252] The third main flow channel 3 has a fifth wall 3a and a sixth wall 3b that are opposite to each other along the first direction Y, and a third flow-out end 3c is provided with a third flow spoiler 430; along the first direction Y, the third flow spoiler 430 is spaced apart from the fifth wall 3a, and the third flow spoiler 430 is spaced apart from the sixth wall 3b; along the second direction X, the third flow spoiler 430 is spaced apart from the fourth group of flow channels 360.

[0253] The fourth main flow channel 4 has a seventh wall 4a and an eighth wall 4b that are opposite to each other along the first direction Y, and a fourth flow-in end 4d is provided with a fourth flow spoiler 440; along the first direction Y, the fourth flow spoiler 440 is spaced apart from the seventh wall 4a, and the fourth flow spoiler 440 is spaced apart from the eighth wall 4b; along the second direction X, the fourth flow spoiler 440 is spaced apart from the fifth group of flow channels 370.

[0254] Referring to ​ , a plurality of fifth flow spoilers 450 are further provided in the first main flow channel 1, the second main flow channel 2, the third main flow channel 3, the fourth main flow channel 4, and the second communication flow channel 8. The plurality of fifth flow spoilers 450 are arranged in sequence along the flow direction of the liquid to improve the flow uniformity of the heat management component 300.

[0255] In this embodiment, the sum of the cross-sectional areas of the third group of flow channels 350 is greater than the sum of the cross-sectional areas of the first group of flow channels 5, and the sum of the cross-sectional areas of the third group of flow channels 350 is less than the sum of the cross-sectional areas of the second group of flow channels 6, which can balance the flow rates of the first main flow channel 1 and the second main flow channel 2 and relieve the pressure drop near the position of the liquid inlet flow channel 330, thereby improving the flow equalization and reliability of the heat management component 300. The sum of the cross-sectional areas of the sixth group of flow channels 380 is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360. The sum of the cross-sectional areas of the sixth group of flow channels 380 is less than the sum of the cross-sectional areas of the fifth group of flow channels 370, which can balance the flow rates of the third main flow channel 3 and the fourth main flow channel 4 and relieve the pressure drop near the position of the liquid outlet flow channel 340, thereby improving the flow equalization and reliability of the heat management component 300. The first flow disturbing member 410 can balance the flow velocities at the edge and in the middle of the first main flow channel 1, the second flow disturbing member 420 can balance the flow velocities at the edge and in the middle of the second main flow channel 2, the third flow disturbing member 430 can balance the flow velocities at the edge and in the middle of the third main flow channel 3, and the fourth flow disturbing member 440 can balance the flow velocities at the edge and in the middle of the fourth main flow channel 4, further improving the flow equalization and reliability of the heat management component 300.

[0256] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0257] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermal management component, characterized in that, The heat management component has a liquid inlet channel, a first set of channels, a second set of channels, a first main channel, and a second main channel; The first main channel and the second main channel are arranged side by side at intervals in a first direction; In a second direction, the first main channel has a first inlet end, the second main channel has a second inlet end, and the second direction intersects the first direction; The first set of channels includes at least one first diversion channel, and the first inlet end is communicated with the liquid inlet channel through the first set of channels; The second set of channels includes at least one second diversion channel, and the second inlet end is communicated with the liquid inlet channel through the second set of channels; Along the second direction, the projection of the first set of channels falls within the projection of the first inlet end, and the projection of the second set of channels falls within the projection of the second inlet end; Wherein, along the liquid flow direction in the liquid inlet channel, the second set of channels is located downstream of the first set of channels, and the sum of the cross-sectional areas of the second set of channels is greater than the sum of the cross-sectional areas of the first set of channels.

2. The thermal management component according to claim 1, characterized in that, The number of the first diversion channels is one, the number of the second diversion channels is one, and the cross-sectional area of the second diversion channel is greater than the cross-sectional area of the first diversion channel.

3. The thermal management component according to claim 2, wherein Along the first direction, the width of the first diversion channel is W1, and the width of the second diversion channel is W2, satisfying 10mm ≤ W1 ≤ 20mm and 15mm ≤ W2 ≤ 25mm.

4. The thermal management component according to claim 1, characterized in that, The number of the first diversion channels is multiple, and the multiple first diversion channels are arranged at intervals in the first direction. The number of the second diversion channels is one, and the cross-sectional area of the second diversion channel is greater than the sum of the cross-sectional areas of all the first diversion channels.

5. The thermal management component according to claim 1, wherein The number of the first diversion channels is one, the number of the second diversion channels is multiple, and the multiple second diversion channels are arranged at intervals in the first direction. The sum of the cross-sectional areas of all the second diversion channels is greater than the cross-sectional area of the first diversion channel.

6. The thermal management component according to claim 1, wherein The number of the first diversion channels is multiple, and the multiple first diversion channels are arranged at intervals in the first direction; the number of the second diversion channels is multiple, and the multiple second diversion channels are arranged at intervals in the first direction. The sum of the cross-sectional areas of all the second diversion channels is greater than the sum of the cross-sectional areas of all the first diversion channels.

7. The thermal management component according to any one of claims 1-6, characterized in that, The heat management component further has a liquid inlet, and the liquid inlet is arranged at one end of the liquid inlet channel.

8. The thermal management component according to any one of claims 1-6, characterized in that The heat management component further has a first communication channel. Along the first direction, the first communication channel is arranged between the first inlet end and the second inlet end and is respectively communicated with the first inlet end and the second inlet end.

9. The thermal management component according to claim 8, wherein The heat management component further has a third set of channels, and the third set of channels includes at least one third diversion channel. The first communication channel is communicated with the liquid inlet channel through the third set of channels; Along the second direction, the projection of the third set of channels falls within the projection of the first communication channel.

10. The thermal management component according to claim 9, characterized in that, The sum of the cross-sectional areas of the third set of channels is greater than the sum of the cross-sectional areas of the first set of channels, and the sum of the cross-sectional areas of the third set of channels is less than the sum of the cross-sectional areas of the second set of channels.

11. The thermal management component according to any one of claims 1-6, characterized in that, Along the liquid flow direction in the liquid inlet channel, the liquid inlet channel includes a first upstream section located upstream of the first group of channels and a first downstream section located downstream of the first group of channels. The second group of channels is connected to the first downstream section, and the cross-sectional area of the first downstream section is greater than the sum of the cross-sectional areas of the first group of channels.

12. The thermal management component according to claim 11, characterized in that, The width of the first downstream section is W3, satisfying 15 mm ≤ W3 ≤ 25 mm.

13. The thermal management component according to claim 11, characterized in that, The first downstream section extends along the first direction.

14. The thermal management component according to claim 11, wherein The first upstream section is inclined relative to the first downstream section.

15. The thermal management component according to any one of claims 1-6, characterized in that, The first main channel has a first wall and a second wall opposite to each other along the first direction, and a first flow disturbing member is provided at the first inlet end. Along the first direction, the first flow disturbing member is spaced apart from the first wall, and the first flow disturbing member is spaced apart from the second wall. Along the second direction, the first flow disturbing member is spaced apart from the first group of channels.

16. The thermal management component according to any one of claims 1-6, characterized in that, The second main channel has a third wall and a fourth wall opposite to each other along the first direction, and a second flow disturbing member is provided at the second inlet end. Along the first direction, the second flow disturbing member is spaced apart from the third wall, and the second flow disturbing member is spaced apart from the fourth wall. Along the second direction, the second flow disturbing member is spaced apart from the second group of channels.

17. The thermal management component according to any one of claims 1-6, characterized in that, The thermal management component further has an outlet channel, a fourth group of channels, a fifth group of channels, a third main channel, and a fourth main channel. The third main channel and the fourth main channel are arranged side by side and spaced apart along the first direction. In the second direction, the third main channel has a third outlet end, and the fourth main channel has a fourth outlet end. The fourth group of channels includes at least one fourth shunt channel, and the third outlet end is communicated with the outlet channel through the fourth group of channels. The fifth group of channels includes at least one fifth shunt channel, and the fourth outlet end is communicated with the outlet channel through the fifth group of channels. Along the second direction, the projection of the fourth group of channels falls within the projection of the third outlet end, and the projection of the fifth group of channels falls within the projection of the fourth outlet end. Wherein, along the liquid flow direction in the outlet channel, the fourth group of channels is located upstream of the fifth group of channels, and the sum of the cross-sectional areas of the fourth group of channels is greater than the sum of the cross-sectional areas of the fifth group of channels.

18. The thermal management component according to claim 17, wherein The first main channel, the second main channel, the third main channel, and the fourth main channel are arranged in sequence along the first direction.

19. The thermal management component according to claim 17, wherein In the second direction, the first main channel has a first outlet end opposite to the first inlet end, the second main channel has a second outlet end opposite to the second inlet end, the third main channel has a third inlet end opposite to the third outlet end, and the fourth main channel has a fourth inlet end opposite to the fourth outlet end. The thermal management component further has a second communication channel that communicates the first outlet end, the second outlet end, the third inlet end, and the fourth inlet end.

20. The thermal management component according to claim 17, wherein The thermal management component further has an outlet port provided at one end of the outlet channel.

21. The thermal management component according to claim 17, wherein, The thermal management component further has a third communication flow channel. Along the first direction, the third communication flow channel is arranged between the third outflow end and the fourth outflow end and is respectively communicated with the third outflow end and the fourth outflow end.

22. The thermal management component according to claim 21, wherein, The thermal management component further has a sixth group of flow channels. The sixth group of flow channels includes at least one sixth diversion channel. The third communication flow channel is communicated with the liquid outlet flow channel through the sixth group of flow channels. Along the second direction, the projection of the sixth group of flow channels falls within the projection of the third communication flow channel.

23. The thermal management component according to claim 22, wherein The sum of the cross-sectional areas of the sixth group of flow channels is greater than the sum of the cross-sectional areas of the fourth group of flow channels, and the sum of the cross-sectional areas of the sixth group of flow channels is less than the sum of the cross-sectional areas of the fifth group of flow channels.

24. The thermal management component according to claim 17, wherein Along the liquid flow direction in the liquid outlet flow channel, the liquid outlet flow channel includes a second upstream section located upstream of the fifth group of flow channels and a second downstream section located downstream of the fifth group of flow channels. The fourth group of flow channels is connected to the second upstream section, and the cross-sectional area of the second upstream section is greater than the sum of the cross-sectional areas of the fourth group of flow channels.

25. The thermal management component according to claim 17, wherein The third main flow channel has a fifth wall and a sixth wall opposite to each other along the first direction, and a third flow disturbing member is arranged at the third outflow end. Along the first direction, the third flow disturbing member is spaced from the fifth wall, and the third flow disturbing member is spaced from the sixth wall. Along the second direction, the third flow disturbing member is spaced from the fourth group of flow channels.

26. The thermal management component according to claim 17, wherein, The fourth main flow channel has a seventh wall and an eighth wall opposite to each other along the first direction, and a fourth flow disturbing member is arranged at the fourth outflow end. Along the first direction, the fourth flow disturbing member is spaced from the seventh wall, and the fourth flow disturbing member is spaced from the eighth wall. Along the second direction, the fourth flow disturbing member is spaced from the fifth group of flow channels.

27. A battery, characterized in that, Including the thermal management component according to any one of claims 1-26.

28. An electrical device, characterized in that, Including the battery according to claim 27.

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