Thermal management component, battery, and electric device

Abstract

Disclosed in the present application are a thermal management component, a battery, and an electric device. The thermal management component is provided with a liquid intake flow channel, a first main flow channel, a second main flow channel, and a first group of flow channels and a second group of flow channels arranged side by side in a first direction, wherein in a second direction, the first main flow channel is provided with a first inflow end, and the second main flow channel is provided with a second inflow end, the second direction intersecting with the first direction; the first group of flow channels includes at least one first sub-flow channel, the first inflow end being in communication with the liquid intake flow channel through the first group of flow channels; the second group of flow channels includes at least one second sub-flow channel, the second inflow end being in communication with the liquid intake flow channel through the second group of flow channels; and in the second direction, the projection of the first group of flow channels falls within the projection of the first inflow end, and the projection of the second group of flow channels falls within the projection of the second inflow end. In the direction of liquid flow in the liquid intake 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.

Description

Thermal management components, batteries and electrical equipment CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 202410130189.X, filed on January 30, 2024, entitled “Thermal Management Components, Batteries and Electrical Equipment,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a thermal management component, a battery, and an electrical device. Background Art

[0003] With the development of new energy technologies, batteries are being used more and more widely. Batteries have high energy density, high reliability, long service life, and are environmentally friendly to the social environment. They have been widely used in passenger cars, commercial vehicles, electric bicycles, heavy trucks, energy storage facilities, battery swap stations, engineering manufacturing, smart devices, etc. At the same time, they also promote technological development and research in communication terminals, medical devices, energy development, etc.

[0004] In battery technology, excessively high or low cell temperatures can lead to a decrease in the cycle performance of the cell, reducing battery reliability. Improving the cycle life of the cell and improving battery reliability is a pressing issue in battery technology. Summary of the Invention

[0005] The embodiments of the present application provide a thermal management component, a battery, and an electrical device, which can improve the current distribution of the thermal management component, thereby improving the reliability of the battery.

[0006] In the first aspect, an embodiment of the present application provides a thermal management component, which has a liquid inlet channel, a first group of channels, a second group 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 and spaced apart along a first direction; in the second direction, the first main channel has a first inflow end, the second main channel has a second inflow end, and the second direction intersects with the first direction; the first group of channels includes at least one first branch channel, and the first inflow end is connected to the liquid inlet channel through the first group of channels; the second group of channels includes at least one second branch channel, and the second inflow end is connected to the liquid inlet channel through the second group of channels; along the second direction, the projection of the first group of channels falls within the projection of the first inflow end, and the projection of the second group of channels falls within the projection of the second inflow end; wherein, along the liquid flow direction in the liquid inlet channel, the second group of channels is located downstream of the first group of channels, and the sum of the cross-sectional areas of the second group of channels is greater than the sum of the cross-sectional areas of the first group of channels.

[0007] In the above technical solution, the first group of flow channels connects the first main channel with the liquid inlet channel, and the first group of flow channels introduces liquid into the first main channel. The second group of flow channels connects the second main channel with the liquid inlet channel, and the first group of flow channels introduces liquid into the second main 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 channel can be increased, and the difference between the flow rate of the liquid in the first main channel and the flow rate of the liquid in the second main channel can be reduced, so that the flow rate of the liquid distributed to the first main channel and the second main channel is more uniform, and the flow rate of the liquid in the first main channel and the second main channel is closer, thereby improving the uniformity of the flow 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.

[0008] In some embodiments, the number of the first branch channel is one, the number of the second branch channel is one, and the cross-sectional area of ​​the second branch channel is greater than the cross-sectional area of ​​the first branch channel.

[0009] In the above technical solution, a first branch channel guides the liquid into the first main channel, and a second branch channel guides the liquid into the second main channel. The number of first branch channels and second branch channels is small, which can reduce the difficulty of preparing the thermal management component.

[0010] In some embodiments, along the first direction, the width of the first branch channel is W1, and the width of the second branch channel is W2, satisfying 10 mm ≤ W1 ≤ 20 mm, and 15 mm ≤ W2 ≤ 25 mm.

[0011] In the above technical solution, 10mm≤W1, the first branch channel will not be too narrow, which can alleviate the pressure drop of the liquid in the first branch channel; W1≤20mm, the first branch channel will not be too wide, so the liquid flow in the first branch channel 5a will not be too large, which is conducive to improving the flow uniformity of the thermal management component; therefore, 10mm≤W1≤20mm can take into account the pressure drop and flow uniformity of the thermal management component.

[0012] 15mm≤W2, the second branch channel will not be too narrow, which can alleviate the pressure drop of the liquid in the second branch channel and have a larger liquid flow rate in the second branch channel; W2≤25mm, the second branch channel will not be too large, which can obtain a smaller thermal management component. Therefore, 15mm≤W2≤25mm can take into account both the pressure drop and volume of the thermal management component.

[0013] In some embodiments, there are multiple first diversion channels, and the multiple first diversion channels are spaced apart along the first direction. There is one second diversion channel, 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.

[0014] In the above technical solution, the liquid is introduced into the first main channel through a plurality of first branch channels, and the liquid is introduced into the second main channel through a second branch channel, thereby improving the flow uniformity of the thermal management component.

[0015] In some embodiments, the number of the first branch channel is one, the number of the second branch channels is multiple, the multiple second branch channels are spaced apart along the first direction, and the sum of the cross-sectional areas of all the second branch channels is greater than the cross-sectional area of ​​the first branch channel.

[0016] In the above technical solution, the liquid is introduced into the first main channel through a first branch channel, and the liquid is introduced into the second main channel through multiple second branch channels, thereby improving the flow uniformity of the thermal management component.

[0017] In some embodiments, there are multiple first diversion channels, and the multiple first diversion channels are spaced apart along the first direction; there are multiple second diversion channels, and the multiple second diversion channels are spaced apart along the first direction, and 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.

[0018] In the above technical solution, the liquid is introduced into the first main channel through multiple first branch channels, and the liquid is introduced into the second main channel through multiple second branch channels. The number of first branch channels and second branch channels is multiple, which makes it convenient to arrange the first branch channels and second branch channels at different positions as needed, so as to improve the flow uniformity of the thermal management component and reduce the difficulty of preparing the thermal management component.

[0019] In some embodiments, the thermal management component has a liquid inlet, and the liquid inlet is arranged at one end of the liquid inlet channel.

[0020] In some embodiments, the thermal management component further has a first communicating flow channel. Along the first direction, the first communicating flow channel is disposed between the first inflow end and the second inflow end, and is communicated with the first inflow end and the second inflow end, respectively.

[0021] In the above technical solution, the first connecting flow channel is connected to the first inflow end and the second inflow end respectively. The first connecting 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, and the total flow rate of the liquid in the thermal management can be increased, thereby improving the heat exchange effect of the thermal management component.

[0022] In some embodiments, the thermal management component also has a third group of flow channels, the third group of flow channels includes at least one third branch channel, and the first connecting flow channel is connected to 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 connecting flow channel.

[0023] In the above technical solution, the first connecting flow channel is connected to the liquid inlet flow channel through the third group of flow channels, and the third branch flow channel can introduce the liquid into the first connecting flow channel, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, and increase the total flow rate of the liquid in thermal management, thereby improving the heat exchange effect of the thermal management component.

[0024] 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 smaller than the sum of the cross-sectional areas of the second group of flow channels.

[0025] In the above technical solution, the cross-sectional area of ​​the first flow channel group, the cross-sectional area of ​​the third flow channel group and the cross-sectional area of ​​the second flow channel group increase successively. In this way, the resistance encountered by the liquid along the flow direction of the liquid in the liquid inlet channel decreases successively, which is beneficial to increase the total flow rate of the liquid in the thermal management component, thereby improving the heat exchange effect of the thermal management component.

[0026] In some embodiments, 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.

[0027] In the above technical solution, the cross-sectional area of ​​the first downstream section is larger than the sum of the cross-sectional areas of the first group of flow channels. Thus, compared with the first group of flow channels, the liquid can more easily enter the first downstream section, and then 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.

[0028] In some embodiments, the width of the first downstream section is W3, satisfying 15 mm ≤ W3 ≤ 25 mm.

[0029] In the above technical solution, if W3 is 15mm ≤ W3, the first downstream section will not be too narrow, thus mitigating the pressure drop of the liquid within the first downstream section. If W3 is 25mm ≤ W3, the first downstream section will not be too wide, thus reducing its width and achieving a smaller thermal management component. Therefore, if W3 is 15mm ≤ W3 ≤ 25mm, both the pressure drop and the volume of the thermal management component can be balanced.

[0030] In some implementations, the first downstream segment extends along the first direction.

[0031] In the above technical solution, the first downstream section extends along the first direction, and the arrangement direction of the first main channel and the second main channel is the same as the extension direction of the first downstream section. In this way, the first downstream section, the first main channel and the second main channel can be arranged more compactly, thereby obtaining a thermal management component with a smaller thermal volume and improving the energy density of the battery using the thermal management component.

[0032] In some embodiments, the first upstream section is inclined relative to the first downstream section.

[0033] In the above technical solution, the first upstream section is arranged obliquely relative to the first downstream section so that the first upstream section and the first downstream section are arranged at an angle. In this way, when the length of the first upstream section and the length of the first downstream section are constant, the liquid inlet channel as a whole occupies a smaller size in the first direction and the second direction, and a smaller thermal management component can be obtained, thereby improving the energy density of the battery using the thermal management component.

[0034] In some embodiments, the first main flow channel has a first wall and a second wall opposite to each other along the first direction, and a first spoiler is provided at the first inflow end; along the first direction, the first spoiler is spaced apart from the first wall, and the first spoiler is spaced apart from the second wall; along the second direction, the first spoiler is spaced apart from the first group of flow channels.

[0035] In the above technical solution, the first spoiler can divert the liquid at the first inlet end so that the liquid can first flow to the first wall and the second wall, thereby alleviating the problem of uneven liquid flow rate in the first main channel caused by the resistance of the first wall and the second wall to the liquid.

[0036] In some embodiments, the second main flow channel has a third wall and a fourth wall opposite to each other along the first direction, and a second spoiler is provided at the second inflow end; along the first direction, the second spoiler is spaced apart from the third wall, and the second spoiler is spaced apart from the fourth wall; along the second direction, the second spoiler is spaced apart from the second group of flow channels.

[0037] In the above technical solution, the second spoiler can divert the liquid at the second inlet end so that the liquid can first flow to the third wall and the fourth wall, thereby alleviating the problem of uneven liquid flow rate in the second main channel caused by the resistance of the third wall and the fourth wall to the liquid.

[0038] In some embodiments, the thermal management component further has a liquid 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 outflow end, and the fourth main channel has a fourth outflow end; the fourth group of channels includes at least one fourth branch channel, and the third outflow end is connected to the liquid outlet channel through the fourth group of channels; the fifth group of channels includes at least one fifth branch channel, and the fourth outflow end is connected to the liquid 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 outflow end, and the projection of the fifth group of channels falls within the projection of the fourth outflow end; wherein, along the liquid flow direction in the liquid 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.

[0039] In the above technical solution, the fourth group of flow channels connects the third flow channel with the liquid outlet flow channel, and the fourth group of flow channels guides the liquid out of the third main flow channel. The fifth group of flow channels connects the fourth main flow channel with the liquid outlet flow channel, and the fifth group of flow channels guides 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, and the flow channels of the liquid distributed to the third and fourth main flow channels can be more uniform, thereby further improving the uniformity of the flow 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.

[0040] In some embodiments, the first main channel, the second main channel, the third main channel, and the fourth main channel are sequentially arranged along the first direction.

[0041] In the above technical solution, 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, which can reduce the size of the channel in the second direction. The layout of the channel is compact, and a smaller thermal management component can be obtained, thereby improving the energy density of the battery using the thermal management component.

[0042] In some embodiments, in the second direction, the first main channel has a first outflow end opposite to the first inflow end, the second main channel has a second outflow end opposite to the second inflow end, the third main channel has a third inflow end opposite to the third outflow end, and the fourth main channel has a fourth inflow end opposite to the fourth outflow end; the thermal management component also has a second connecting flow channel, and the second connecting flow channel connects the first outflow end, the second outflow end, the third inflow end and the fourth inflow end.

[0043] In the above technical solution, the first outflow end, the second outflow end, the third inflow end and the fourth inflow end are respectively connected to the second connecting flow channel, so that the second connecting flow channel can gather the liquid flowing out of the first main channel and the second main channel, and divert the liquid to the third main channel and the fourth main channel, thereby balancing the flow rate of the liquid in the first main channel, the second main channel, the third main channel and the fourth main channel, thereby further 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.

[0044] In some embodiments, the thermal management component has a liquid outlet, and the liquid outlet is arranged at one end of the liquid outlet channel.

[0045] In some embodiments, the thermal management component further has a third communicating flow channel. Along the first direction, the third communicating flow channel is arranged between the third outflow end and the fourth outflow end, and is communicated with the third outflow end and the fourth outflow end respectively.

[0046] In the above technical solution, the third connecting flow channel is respectively connected to the third outflow end and the fourth outflow end. In addition to the fourth group of flow channels, the third connecting flow channel can also discharge 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, and the flow rate of the liquid in thermal management can be increased, thereby improving the heat exchange effect of the thermal management component.

[0047] In some embodiments, the thermal management component also has a sixth group of flow channels, the sixth group of flow channels includes at least one sixth branch channel, and the third connecting flow channel is connected to 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 connecting flow channel.

[0048] In the above technical solution, the third connecting flow channel is connected to the liquid outlet flow channel through the sixth group of flow channels. The sixth group of flow channels can discharge the liquid from the third connecting flow channel, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, and increase the flow rate of the liquid in thermal management, thereby improving the heat exchange effect of the thermal management component.

[0049] 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 smaller than the sum of the cross-sectional areas of the fifth group of flow channels.

[0050] 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 successively. In this way, the resistance encountered by the liquid along the flow direction of the liquid in the liquid outlet channel decreases successively, which is beneficial to increasing the flow rate of the liquid in the thermal management component, and is beneficial to improving the flow uniformity of the thermal management component, thereby improving the heat exchange effect of the thermal management component.

[0051] In some embodiments, along the liquid flow direction in the liquid outlet channel, the liquid outlet channel includes a second upstream section located upstream of the fifth group of channels and a second downstream section located downstream of the fifth group of channels, the fourth group of 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 channels.

[0052] In the above technical solution, the cross-sectional area of ​​the second downstream section is larger than the sum of the cross-sectional areas of the fourth group of flow channels. Thus, compared with the liquid in the fourth group of flow channels, the liquid in the second upstream section is subjected to less pressure, and the second upstream section can alleviate the pressure drop, thereby obtaining a thermal management component with a smaller overall pressure drop, which is beneficial to improving the heat exchange effect of the thermal management component.

[0053] 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 the third outflow end is provided with a third spoiler; along the first direction, the third spoiler is spaced apart from the fifth wall, and the third spoiler is spaced apart from the sixth wall; along the second direction, the third spoiler is spaced apart from the fourth group of flow channels.

[0054] In the above technical solution, the third spoiler can divert the liquid at the third outflow end so that the liquid can first flow to the fifth wall and the sixth wall and then flow out of the third main channel, thereby alleviating the problem of uneven liquid flow rate in the third main channel caused by the resistance of the fifth wall and the sixth wall to the liquid.

[0055] 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 the fourth outflow end is provided with a fourth spoiler; along the first direction, the fourth spoiler is spaced apart from the seventh wall, and the fourth spoiler is spaced apart from the eighth wall; along the second direction, the fourth spoiler is spaced apart from the fifth group of flow channels.

[0056] 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 seventh wall and the eighth wall and then flow out of the fourth main channel, thereby alleviating the problem of uneven liquid flow rate in the fourth main channel caused by the resistance of the seventh wall and the eighth wall to the liquid.

[0057] In a second aspect, an embodiment of the present application provides a battery, comprising the thermal management component provided in any embodiment of the first aspect.

[0058] In a third aspect, an embodiment of the present application provides an electric device, which includes the battery provided by any embodiment of the second aspect, and the battery is used to power the electric device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0060] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0061] FIG2 is an exploded schematic diagram of a battery according to some embodiments of the present application;

[0062] FIG3 is a schematic structural diagram of a thermal management component according to some embodiments of the present application;

[0063] FIG4 is a schematic diagram of the internal structure of a thermal management component according to some embodiments of the present application;

[0064] FIG5 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG4 ;

[0065] FIG6 is a partial enlarged view of a thermal management component according to some embodiments of the present application;

[0066] FIG7 is a schematic diagram of the internal structure of a thermal management component according to some other embodiments of the present application;

[0067] FIG8 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG7 ;

[0068] FIG9 is a schematic diagram of the internal structure of a thermal management component according to some other embodiments of the present application;

[0069] FIG10 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG9 ;

[0070] FIG11 is a schematic diagram of the internal structure of a thermal management component according to some other embodiments of the present application;

[0071] FIG12 is a schematic diagram of the liquid flow direction in the thermal management component shown in FIG11 .

[0072] Icons: 300-thermal 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 inflow end; 1d-first outflow end; 2-second main channel; 2a-third wall; 2b-fourth wall; 2c-second inflow end; 2d-second outflow end; 3-third main channel; 3a-fifth wall; 3b-sixth wall; 3d-third inflow end; 3c-third outflow end; 4-fourth main channel; 4a-seventh wall; 4b-eighth wall; 4d-fourth inflow end; 4c-fourth outflow end; 5-first group of channels; 5a-first branch channel; 6-second group of channels; 6a- Two branch channels; 7-first connecting channel; 8-second connecting channel; 9-third connecting channel; 350-third group of channels; 350a-third branch channel; 360-fourth group of channels; 360a-fourth branch channel; 370-fifth group of channels; 370a-fifth branch channel; 380-sixth group of channels; 380a-sixth branch channel; 410-first spoiler; 420-second spoiler; 430-third spoiler; 440-fourth spoiler; 450-fifth spoiler; 100-battery; 10-battery cell; 20-housing; 21-first part; 22-second part; 23-accommodating space; 1000-vehicle; 200-motor; 400-controller; Y-first direction; X-second direction; S1-direction of liquid flow in the inlet channel; S2-direction of liquid flow in the outlet channel.

[0073] The drawings are not drawn to scale. DETAILED DESCRIPTION

[0074] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0075] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0076] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0077] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0078] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on 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 perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0079] The term "or" in this application is merely a description of the association relationship between associated objects, indicating that two relationships may exist. For example, A or B can represent two situations: A exists alone, and B exists alone.

[0080] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0081] The term "plurality" used in this application refers to two or more (including two).

[0082] In this application, battery cells may include, but are not limited to, lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries. Battery cells include, but are not limited to, cylindrical, flat, rectangular, or other shapes. Battery cells are generally packaged in cylindrical, prismatic, and soft-pack shapes.

[0083] A battery cell consists of an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrodes. Metal ions (such as lithium ions) are inserted and removed from the positive and negative electrodes. The separator is placed between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0084] The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab.

[0085] Taking lithium-ion batteries as an example, the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The positive 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 electrode, carbon, nickel or titanium, etc. can be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (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.).

[0086] The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as the negative electrode tab.

[0087] The negative electrode current collector can be a metal foil or a composite current collector. For example, the metal foil can be silver-plated aluminum, silver-plated stainless steel, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium. The negative electrode active material can be carbon or silicon, for example.

[0088] To reduce the risk of tabs fusing due to high current, multiple positive tabs are stacked together, and multiple negative tabs are stacked together. The separator can be made of materials such as PP (polypropylene) or PE (polyethylene). Furthermore, the electrode assembly can be either a wound or laminated structure.

[0089] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a casing for enclosing one or more battery cells. The casing can reduce the effects of liquids or other foreign matter on the charging or discharging of the battery cells.

[0090] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0091] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are housed in the case.

[0092] In some embodiments, multiple battery cells can be first integrated into at least one battery module, which is then installed in a housing to form a battery pack. In this embodiment, auxiliary structural members such as crossbeams can be installed between the battery modules to improve the stability of the battery module installation in the housing.

[0093] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0094] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0095] The development of battery technology must take into account multiple design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability must also be considered.

[0096] In battery technology, the cycle performance of a battery cell is related to its temperature. If the heat generated by the battery cell during use causes the battery cell temperature to be too high, or if the ambient temperature causes the battery cell temperature to be too high or too low, the cycle performance of the battery cell will decrease. Therefore, a thermal management component is usually set inside the battery to regulate the temperature of multiple battery cells so that the battery cells are within an appropriate temperature range.

[0097] The interior of the thermal management component is usually formed with multiple main channels for liquid flow. The liquid flow in the main channel closer to the liquid inlet is larger and faster, while the liquid flow in the main channel farther away from the liquid inlet is smaller and the flow rate is smaller. The flow rate of the liquid in each main channel is uneven, the thermal management component has poor flow uniformity, the heat exchange effect at different positions of the thermal management component is inconsistent, and the thermal management component has poor ability to regulate the temperature of the battery cell, resulting in a shorter cycle life of the battery cell and affecting the reliability of the battery.

[0098] In view of this, in order to improve the problem of uneven flow of thermal management components affecting battery reliability, the present application provides a technical solution, in which a first group of flow channels is set between the liquid inlet channel and the first main channel, and a second group of flow channels is set between the second main channel and the liquid inlet channel. The second group of flow channels is downstream of the first group of flow channels, and the sum of the cross-sectional areas of the second flow channel groups is greater than the sum of the cross-sectional areas of the first flow channel groups, thereby increasing the flow rate of the liquid entering the second main channel, reducing the difference between the flow rate of the liquid in the first main channel and the flow rate of the liquid in the second main channel, and making the flow rate of the liquid 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.

[0099] 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. The heat exchange medium is a liquid contained in the flow channel of the thermal management component. In the case of cooling or lowering the temperature of the battery cells, the 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, 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 increase the temperature of multiple battery cells. Optionally, the liquid can be water, a mixture of water and ethylene glycol, etc.

[0100] For the convenience of description, the liquid mentioned below refers to the heat exchange medium.

[0101] The technical solutions disclosed in the embodiments of the present application are applicable to, but not limited to, batteries and electrical equipment using batteries.

[0102] Electrically powered equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. Vehicles can be fuel-powered, gas-powered, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles. Spacecraft include aircraft, rockets, space shuttles, and spacecraft. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0103] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0104] Please refer to FIG1 , which is a schematic diagram of the structure of a vehicle 1000 according to some embodiments of the present application. A battery 100 is disposed inside the vehicle 1000 . The battery 100 can be disposed at the bottom, head, or tail of the vehicle 1000 . The battery 100 can be used to power the vehicle 1000 . For example, the battery 100 can serve as an operating power source for the vehicle 1000 .

[0105] 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, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0106] In some embodiments of the present application, the battery 100 can not only serve as the operating power source of the vehicle 1000, but also serve 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.

[0107] In some embodiments, please refer to FIG. 2 , which is an exploded schematic diagram of a battery 100 according to some embodiments of the present application. The battery 100 includes multiple battery cells 10 and a thermal management component 300 . The multiple battery cells 10 can be connected in series, in parallel, or in a hybrid configuration. Hybrid configuration refers to multiple battery cells 10 being connected in both series and parallel configurations.

[0108] In some embodiments, the battery 100 may further include a busbar component (not shown), and the multiple battery cells 10 may be electrically connected via the busbar component to achieve series connection, parallel connection, or mixed connection of the multiple battery cells 10 .

[0109] The busbar component may be a metal conductor, such as copper, iron, aluminum, steel, aluminum alloy, etc.

[0110] In some embodiments, the battery 100 may further include a housing 20 for accommodating the battery cells 10. The housing 20 may include a first portion 21 and a second portion 22, which overlap to define a receiving space 23 for accommodating the battery cells 10. The connection between the first portion 21 and the second portion 22 may be sealed by a sealing element (not shown), such as a sealing ring or sealant.

[0111] The first portion 21 and the second portion 22 can have various shapes, such as a cuboid, a cylinder, etc. The first portion 21 can be a hollow structure with one side open, and the second portion 22 can also be a hollow structure with one side open. The open side of the second portion 22 covers the open side of the first portion 21, thereby forming the box 20 with the accommodating space 23. Of course, the first portion 21 can also be a hollow structure with one side open, and the second portion 22 can be a plate-like structure. The second portion 22 covers the open side of the first portion 21, thereby forming the box 20 with the accommodating space 23.

[0112] 2 , in some embodiments, the battery 100 further includes a thermal management component 300 , wherein the thermal management component 300 is provided with a flow channel inside, and the flow channel is used for liquid to regulate the temperature of the battery cell 10 . The thermal management component 300 can be used to regulate the temperature of the battery cell 10 at the bottom of the battery cell 10 . Exemplarily, as shown in FIG2 , the thermal management component 300 is provided at the bottom of the battery cell 10 , and the upper surface of the thermal management component 300 is a heat exchange surface, and the thermal management component 300 exchanges heat with the battery cell 10 through the upper surface. The thermal management component 300 can also be used between two adjacent battery cells 10 , in which case the two opposite surfaces of the thermal management component 300 in the thickness direction are both heat exchange surfaces, and the thermal management component 300 can exchange heat with the battery cell 10 through the two heat exchange surfaces.

[0113] The embodiment of the present application provides a thermal management component 300, which can solve the problem that poor current distribution of the thermal management component 300 affects the reliability of the battery 100. The specific structure of the thermal management component 300 is described in detail below with reference to the accompanying drawings.

[0114] Figure 3 is a schematic diagram of the structure of the thermal management component 300 of some embodiments of the present application; Figure 4 is a schematic diagram of the internal structure of the thermal management component 300 of some embodiments of the present application; Figure 5 is a schematic diagram of the liquid flow direction in the thermal management component 300 shown in Figure 4; Figure 6 is a partial enlarged view of the thermal management component 300 of some embodiments of the present application.

[0115] The present embodiment provides a thermal management component 300. Referring to Figures 3 to 6, the thermal management component 300 includes a liquid inlet 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 and spaced apart along a first direction Y. In a 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.

[0116] The first flow channel 5 includes at least one first branch channel 5a, and the first inlet end communicates with the liquid inlet channel 330 through the first flow channel 5. The second flow channel 6 includes at least one second branch channel 6a, and the second inlet end 2c communicates with the liquid inlet channel 330 through the second flow channel 6.

[0117] 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. In the liquid flow direction S1 in the liquid inlet 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.

[0118] The shape of the heat management component 300 can be varied, and the heat management component 300 can be configured as a circle, a rectangle, an ellipse, a special shape, etc. For example, as shown in Figures 3 to 5 , the heat management component 300 is configured as a rectangle.

[0119] It should be understood that the liquid inlet channel 330, the first group of channels 5, the second group of channels 6, the first main channel 1, and the second main channel 2 are all channels for containing liquid in the thermal management component 300. The liquid inlet channel 330 is used to transport liquid to the first main channel 1 and the second main channel 2. The liquid in the liquid inlet channel 330 entering the first main channel 1 and the second main channel 2 is also called diversion.

[0120] It should be noted that in the thermal management component 300 provided in the embodiment of the present application, there can be multiple main channels connected to the liquid inlet channel 330. That is, according to specific needs, in addition to the first main channel 1 and the second main channel 2, the thermal management component 300 can also have a third, fourth, and Nth main channels connected to the liquid inlet channel 330. For example, as shown in Figures 4 and 5, the thermal management component 300 has two main channels connected to the liquid inlet channel 330, namely the first main channel 1 and the second main channel 2, with the first main channel 1 located upstream of the second main channel 2.

[0121] The first main channel 1 and the second main channel 2 are arranged side by side along the first direction Y, and the first main channel 1 and the second main channel 2 are connected in parallel. The shapes of the first main channel 1 and the second main channel 2 can be various, and the shapes of the first main channel 1 and the second main channel 2 can be the same or different. In the second direction X, the first main channel 1 and the second main channel 2 can extend in a curve, or the first main channel 1 and the second main channel 2 can extend in a straight line. For example, as shown in Figures 4 and 5, the first main channel 1 and the second main channel 2 both extend in a straight line.

[0122] Along the second direction X, the first main channel 1 has a first inflow end and a first outflow end 1d opposite to each other. Liquid enters the first main channel 1 from the first inflow end and flows out of the first main channel 1 from the first outflow end 1d. Similarly, the second main channel 2 has a second inflow end 2c and a second outflow end 2d opposite to each other. Liquid enters the first main channel 1 from the second inflow end 2c and flows out of the first main channel 1 from the second outflow end 2d.

[0123] The first inlet end is connected to the liquid inlet channel 330 via the first set of flow channels 5, meaning that the first set of flow channels 5 connects the first inlet end to the liquid inlet channel 330. It is understood that the first set of flow channels 5 is located between the first inlet end and the liquid inlet channel 330, and the liquid in the liquid inlet channel 330 passes through the first set of flow channels 5 before entering the first main channel 1. It is understood that the cross-sectional area of ​​the first set of flow channels 5 affects the liquid flow rate in the first main channel 1, and the liquid flow rate in the first main channel 1 is related to the size of the first set of flow channels 5.

[0124] The second inlet end 2c is connected to the liquid inlet channel 330 via the second set of flow channels 6. This means that the second set of flow channels 6 connects the second inlet end 2c to the liquid inlet channel 330. It is understood that the second set of flow channels 6 is located between the second inlet end 2c and the liquid inlet channel 330. Liquid in the liquid inlet channel 330 passes through the second set of flow channels 6 before entering the second main channel 2. It is understood that the cross-sectional area of ​​the second set of flow channels 6 affects the liquid flow rate in the second main channel 2, and the liquid flow rate in the second main channel 2 is related to the size of the second set of flow channels 6.

[0125] The first group of runners 5 includes at least one first branch runner 5a. It is understood that there can be one or more first branch runners 5a. If there is one first branch runner 5a, the cross-sectional area of ​​the first branch runner 5a is the sum of the cross-sectional areas of the first group of runners 5. If there is one first branch runner 5a, the sum of the cross-sectional areas of the multiple first branch runners 5a is the sum of the cross-sectional areas of the first group of runners 5.

[0126] The second group of runners 6 includes at least one second branch runner 6a. It is understood that there may be one or more second branch runners 6a. If there is one second branch runner 6a, the cross-sectional area of ​​the second branch runner 6a is the sum of the cross-sectional areas of the second group of runners 6. If there are multiple second branch runners 6a, the sum of the cross-sectional areas of the multiple second branch runners 6a is the sum of the cross-sectional areas of the second group of runners 6.

[0127] If the cross-section of the first branch channel 5a or the second branch channel 6a is rectangular, the length of the cross-section multiplied by the width is the cross-sectional area of ​​the first branch channel 5a or the second branch channel 6a; if the cross-section of the first branch channel 5a or the second branch channel 6a is circular, measure the radius r corresponding to the circle, and the cross-sectional area of ​​the first branch channel 5a or the second branch channel 6a can be obtained according to the calculation formula πr2 for the area of ​​the circle; if the cross-section of the first branch channel 5a or the second branch 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 branch channel 5a or the second branch channel 6a.

[0128] The thermal management component 300 can be integrally formed or manufactured in separate parts. Specifically, the thermal management component 300 includes a first plate and a second plate stacked together, with a groove punched into the first plate on a side facing the second plate. The first plate covers the groove to form a flow channel for accommodating liquid.

[0129] Because the first main flow channel 1 is located upstream of the second main flow channel 2, the liquid flow in the first main flow channel 1 is typically greater than that in the second main flow channel, resulting in uneven flow in the thermal management component 300. To balance the liquid flow in the first main flow channel 1 with the liquid flow in the second flow channel, the cross-sectional area of ​​the second group of flow channels 6 needs to be larger than the cross-sectional area of ​​the first group of flow channels 5. A larger cross-sectional area of ​​a flow channel indicates a greater liquid flow, and thus a higher liquid flow rate.

[0130] In this embodiment, the first group of flow channels 5 connects the first main channel 1 with the liquid inlet channel 330, and the first group of flow channels 5 introduces liquid into the first main channel 1. The second group of flow channels 6 connects the second main channel 2 with the liquid inlet channel 330, and the first group of flow channels 5 introduces liquid into the second main channel 2. 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. In this way, the flow rate of the liquid in the second main channel 2 is increased, the flow rate of the liquid entering the second main channel 2 is increased, and the difference between the flow rate of the liquid in the first main channel 1 and the flow rate of the liquid in the second main channel 2 is reduced, making the flow rate of the liquid distributed to the first main channel 1 and the second main channel 2 more uniform, thereby improving the uniformity of the flow of the thermal management component 300, improving the heat exchange effect of the thermal management component 300, improving the cycle performance of the battery cell 10, and improving the reliability of the battery 100.

[0131] In some embodiments, the first direction Y may be perpendicular to the second direction X.

[0132] The specific implementation method of making the sum of the cross-sectional areas of the second group of flow channels 6 greater than the sum of the cross-sectional areas of the first group of flow channels 5 is described in detail below.

[0133] 4 and 5 , in some embodiments, the number of the first branch channel 5 a is one, the number of the second branch channel 6 a is one, and the cross-sectional area of ​​the second branch channel 6 a is greater than that of the first branch channel 5 a.

[0134] It can be understood that in this embodiment, the cross-sectional area of ​​the first branch channel 5 a is the sum of the cross-sectional areas of the first group of channels 5 , and the cross-sectional area of ​​the second branch channel 6 a is the sum of the cross-sectional areas of the second group of channels 6 .

[0135] When the depth of the first branch channel 5a is equal to the depth of the second branch channel 6a, the width of the second branch channel 6a can be controlled to be greater than the width of the first branch channel 5a, so that 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. The depth of the first flow channel is the depth of the first flow channel in the thickness direction of the thermal management component 300, and the thickness direction of the thermal management component 300 is the direction perpendicular to the plane formed by the first direction Y and the second direction X.

[0136] Of course, when the width of the first branch channel 5a is equal to the width of the second branch channel 6a, the depth of the second branch channel 6a can be controlled to be greater than the depth of the first branch channel 5a, so that the sum of the cross-sectional areas of the second group of channels 6 is greater than the sum of the cross-sectional areas of the first group of channels 5.

[0137] In this embodiment, a first branch channel 5a introduces liquid into the first main channel 1, and a second branch channel 6a introduces liquid into the second main channel 2. The cross-sectional area of ​​the second branch channel 6a is greater than the cross-sectional area of ​​the first branch channel 5a, so that the sum of the cross-sectional areas of the second group of channels 6 is greater than the sum of the cross-sectional areas of the first branch channels 5a. The small number of second branch channels 6a can reduce the difficulty of preparing the thermal management component 300.

[0138] 6 , in some embodiments, when the number of the first branch channel 5a is one and the number of the second branch channel 6a is one, along the first direction Y, the width of the first branch channel 5a is W1, and the width of the second branch channel 6a is W2, satisfying 10 mm ≤ W1 ≤ 20 mm.

[0139] 10mm≤W1, the first branch channel 5a will not be too narrow, which can alleviate the pressure drop of the liquid in the first branch channel 5a; W1≤20mm, the first branch channel 5a will not be too wide, so the liquid flow in the first branch channel 5a will not be too large, which is conducive to improving the flow uniformity of the thermal management component 300; therefore, 10mm≤W1≤20mm can take into account both the pressure drop and the flow uniformity of the thermal management component 300.

[0140] Illustratively, W1 may be 10 mm, 12 mm, 14 mm, 16 mm, 17 mm, 19 mm, 20 mm, and any value therebetween.

[0141] 6 , in some embodiments, 15 mm ≤ W2 ≤ 25 mm is satisfied.

[0142] 15mm≤W2, the second branch channel 6a will not be too narrow, which can alleviate the pressure drop of the liquid in the second branch channel 6a and have a larger liquid flow rate in the second branch channel 6a; W2≤25mm, the second branch channel 6a will not be too large, and a smaller thermal management component 300 can be obtained. Therefore, 15mm≤W2≤25mm can take into account both the pressure drop and volume of the thermal management component 300.

[0143] Illustratively, W2 can be 15 mm, 17 mm, 19 mm, 22 mm, 23 mm, 24 mm, 25 mm, and any value therebetween.

[0144] Referring to Figures 7 and 8, Figure 7 is a schematic diagram of the internal structure of a thermal management component 300 according to another embodiment of the present application; Figure 8 is a schematic diagram of the direction of liquid flow in the thermal management component 300 shown in Figure 7. In other embodiments, there are multiple first branch channels 5a, and the multiple first branch channels 5a are spaced apart along the first direction Y. There are multiple second branch channels 6a, and the multiple second branch channels 6a are spaced apart along the first direction Y, and the sum of the cross-sectional areas of all the second branch channels 6a is greater than the sum of the cross-sectional areas of all the first branch channels 5a.

[0145] That is, there are multiple first runners 5a and multiple second runners 6a. The number of first runners 5a can be two, three, four, etc. The number of second runners 6a can be two, three, four, etc. It should be noted that the number of first runners 5a and the number of second runners 6a can be the same or different. For example, in Figures 7 and 8, the number of first runners 5a and the number of second runners 6a are both two.

[0146] The sum of the cross-sectional areas of the first group of flow channels can be obtained by adding up the areas of the plurality of first flow channels 5a. The sum of the cross-sectional areas of the second group of flow channels can be obtained by adding up the areas of the plurality of second flow channels 6a.

[0147] In this embodiment, the liquid is introduced into the first main channel 1 through multiple first branch channels 5a, and the liquid is introduced into the second main channel 2 through multiple second branch channels 6a. The number of first branch channels 5a and second branch channels 6a is multiple, which makes it convenient to arrange the first branch channels 5a and second branch channels 6a at different positions as needed, so as to improve the flow uniformity of the thermal management component 300 and reduce the difficulty of preparing the thermal management component 300.

[0148] In some other embodiments, there are multiple first branch channels 5a, and the multiple first branch channels 5a are arranged at intervals along the first direction Y. There is one second branch channel 6a, and the cross-sectional area of ​​the second branch channel 6a is greater than the sum of the cross-sectional areas of all the first branch channels 5a.

[0149] The widths of the plurality of first branch channels 5 a may be the same or different, and the widths of the plurality of second branch channels 6 a may be the same or different.

[0150] In this embodiment, the liquid is introduced into the first main channel 1 through a plurality of first branch channels 5 a , and the liquid is introduced into the second main channel 2 through a second branch channel 6 a , thereby improving the flow uniformity of the thermal management component 300 .

[0151] In some further embodiments, there is one first branch channel 5a, and there are multiple second branch channels 6a. The multiple second branch channels 6a are arranged at intervals along the first direction Y, and the sum of the cross-sectional areas of all the second branch channels 6a is greater than the cross-sectional area of ​​the first branch channel 5a.

[0152] In this embodiment, the liquid is introduced into the first main channel 1 through a first branch channel 5 a , and the liquid is introduced into the second main channel 2 through a plurality of second branch channels 6 a , thereby improving the flow uniformity of the thermal management component 300 .

[0153] The above embodiments illustrate some specific implementations of making the sum of the cross-sectional areas of the second group of flow channels 6 greater than the sum of the cross-sectional areas of the first group of flow channels 5 .

[0154] 4 and 5 , in some embodiments, the thermal management component 300 further includes a liquid inlet 310 , which is disposed at one end of the liquid inlet channel 330 .

[0155] Since the second group of flow channels 6 is located upstream of the first group of flow channels 5 , the first group of flow channels 5 is closer to the liquid inlet 310 than the second group of flow channels 6 .

[0156] Exemplarily, as shown in FIG. 4 and FIG. 5 , the liquid inlet 310 is disposed above the liquid inlet channel 330 , and the first main channel 1 is disposed above the second main channel 2 .

[0157] Referring to Figures 9 and 10, Figure 9 is a schematic diagram of the internal structure of a thermal management component 300 according to yet other embodiments of the present application; and Figure 10 is a schematic diagram of the direction of liquid flow within the thermal management component 300 shown in Figure 9. In some embodiments, the thermal management component 300 further comprises a first communication channel 7, which is disposed along a first direction Y between the first inflow end and the second inflow end 2c and communicates with the first inflow end and the second inflow end 2c, respectively.

[0158] Exemplarily, as shown in FIG. 9 and FIG. 10 , along the first direction Y, the first communication flow channel 7 is located between the first main flow channel 1 and the second main flow channel 2 , and the first communication flow channel 7 extends along the first direction Y.

[0159] In this embodiment, the first connecting flow channel 7 is connected to the first inlet end and the second inlet end 2c respectively. In addition to the second group of flow channels 6, liquid can also enter the second main flow channel 2 through the first connecting flow channel 7. This can reduce flow resistance, alleviate the pressure drop of the liquid, increase the flow rate of the liquid during thermal management, and thus improve the heat exchange effect of the thermal management component 300.

[0160] FIG11 is a schematic diagram of the internal structure of a thermal management component 300 according to some further embodiments of the present application; FIG12 is a schematic diagram of the liquid flow direction in the thermal management component 300 shown in FIG11 .

[0161] 11 and 12 , in some embodiments, the thermal management component 300 further includes a third group of flow channels 350 , the third group of flow channels 350 including at least one third branch flow channel 350 a, and the first connecting flow channel 7 is connected to the liquid inlet flow channel 330 through the third group of flow channels 350 ; along the second direction X, the projection of the third group of flow channels 350 falls within the projection of the first connecting flow channel 7 .

[0162] It can be understood that the third group of flow channels 350 connects the first connecting flow channel 7 with the liquid inlet flow channel 330, and the third group of flow channels 350 can introduce liquid into the first connecting flow channel 7. That is, not only can the first group of flow channels 5 and the second group of flow channels 6 be used to divert liquid into the liquid inlet flow channel 330, but the third group of flow channels 350 can also divert liquid into the liquid inlet flow channel 330.

[0163] The number of the third branch channels 350a can be one or more.

[0164] 11 and 12 , the number of the third branch channel 350 a is one, and the third branch channel 350 a extends along the second direction X. After the third group of channels 350 is added, the liquid in the first connecting channel 7 can partially enter the first main channel 1 and partially enter the second main channel 2 .

[0165] In this embodiment, the first connecting flow channel 7 is connected to the liquid inlet flow channel 330 through the third group of flow channels 350. The third branch flow channel 350a can introduce liquid into the first connecting flow channel 7, which can further reduce the flow resistance, alleviate the pressure drop of the liquid, and increase the total flow rate of the liquid in thermal management, thereby improving the heat exchange effect of the thermal management component 300.

[0166] To facilitate the arrangement of the flow channels, in some embodiments, the first group of flow channels 5 , the second group of flow channels 6 and the third group of flow channels 350 are parallel to each other and extend along the second direction X.

[0167] In some embodiments, 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 .

[0168] If there is one third branch runner 350a, the cross-sectional area of ​​the third branch runner 350a is the sum of the cross-sectional areas of the third group of runners 350. If there are multiple third branch runners 350a, the sum of the cross-sectional areas of the multiple third branch runners 350a is the sum of the cross-sectional areas of the third group of runners 350. For example, in Figures 11 and 12, there is one third branch runner 350a.

[0169] The cross-sectional area of ​​the third branch channel 350a can be measured using the same measurement method as the first branch channel 5a and the second branch channel 6a, which will not be repeated here for the sake of brevity.

[0170] Understandably, the cross-sectional areas of the first flow channel group, the third flow channel group, and the second flow channel group increase in sequence. Thus, along the flow direction S1 of the liquid in the liquid inlet channel, the resistance to the liquid decreases in sequence, which helps increase the total flow rate of the liquid in the thermal management component 300, thereby improving the heat exchange effect of the thermal management component 300.

[0171] 4 and 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 group of channels 5 and a first downstream section 330b located downstream of the first group of channels 5, the second group 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 group of channels 5.

[0172] The first upstream section 330a and the first downstream section 330b may be arranged along the first direction Y to form a straight liquid inlet channel 330. The first upstream section 330a and the first downstream section 330b may also be arranged at an angle (as shown in FIG11 and FIG12 ).

[0173] 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 group of flow channels 5. In this way, the pressure drop of the liquid in the first downstream section 330b can be alleviated. Moreover, compared with the first group of flow channels 5, the liquid is more likely to enter the first downstream section 330b, thereby flowing into the second main flow channel 2 through the second group of flow channels 6, further improving the flow uniformity of the thermal management component 300.

[0174] 6 , in some embodiments, the width of the first downstream section 330 b is W3 , satisfying 15 mm ≤ W3 ≤ 25 mm.

[0175] When W3 is 15 mm ≤ W3, the first downstream section 330 b is not too narrow, which can reduce the pressure drop of the liquid in the first downstream section 330 b. When W3 is 25 mm ≤ W3, the first downstream section 330 b is not too wide, which can reduce the width of the first downstream section 330 b, thereby obtaining a smaller thermal management component 300. Therefore, when W3 is 15 mm ≤ W3 ≤ 25 mm, both the pressure drop and the volume of the thermal management component 300 can be taken into consideration.

[0176] Illustratively, W3 can be 15 mm, 16 mm, 17 mm, 19 mm, 20 mm, 22 mm, 24 mm, 25 mm, and any value therebetween.

[0177] In some embodiments, the liquid inlet 310 is disposed at an end of the first upstream section 330 a away from the first downstream section 330 b .

[0178] 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 group of flow channels 5. Thus, the larger cross-sectional area of ​​the first upstream section 330a can alleviate the pressure drop of the liquid near the liquid inlet 310, thereby increasing the total flow rate of the liquid in the thermal management component 300 and improving the heat exchange effect of the thermal management component 300.

[0179] In some implementations, the first downstream segment 330b extends along the first direction Y.

[0180] The first downstream section 330b may extend in a straight line, or in a curved line.

[0181] The first downstream section 330b extends along the first direction Y, and the arrangement direction of the first main channel 1 and the second main channel 2 is the same as the extension direction of the first downstream section 330b. In this way, the first downstream section 330b, the first main channel 1 and the second main channel 2 can be arranged more compactly, thereby reducing the volume of the thermal management component 300 and improving the energy density of the battery 100 using the thermal management component 300.

[0182] In some embodiments, the first upstream section 330a is tilted relative to the first downstream section 330b.

[0183] It is understandable that the first upstream section 330a and the first downstream section 330b are arranged at an angle. For example, as shown in Figures 4 and 5, the first upstream section 330a and the first downstream section 330b are arranged at an obtuse angle.

[0184] In this embodiment, the first upstream section 330a is tilted relative to the first downstream section 330b so that the first upstream section 330a and the first downstream section 330b are arranged at an angle. In this way, when the length of the first upstream section 330a and the length of the first downstream section 330b are constant, the liquid inlet channel 330 as a whole occupies a smaller size in the first direction Y and the second direction X, thereby obtaining a smaller thermal management component 300 and improving the energy density of the battery 100 using the thermal management component 300.

[0185] 4 and 5 , in some embodiments, the first main flow channel 1 has a first wall 1a and a second wall 1b that are opposite each other along a first direction Y, and a first spoiler 410 is provided at the first inflow end. Along the first direction Y, the first spoiler 410 is spaced apart from the first wall 1a, and the first spoiler 410 is spaced apart from the second wall 1b; along the second direction X, the first spoiler 410 is spaced apart from the first group of flow channels 5.

[0186] When 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 punched by the first plate body to form a flow channel, the first wall 1a and the second wall 1b are the two groove walls of the groove in the corresponding area of ​​the first main flow channel 1, and a gap is set between the first spoiler 410 and the two groove walls of the groove.

[0187] For ease of description, the first wall 1a and the second wall 1b are hereinafter referred to as the edges of the first main channel 1. Along the first direction Y, the area between the first wall 1a and the second wall 1b is the center of the first main channel 1. When liquid flows in the first main channel 1, the first wall 1a and the second wall 1b create resistance to the liquid flow. This results in a low flow velocity at the edges of the first main channel 1, resulting in a low flow rate. There is also a flow velocity difference between the center of the first main channel 1 and the edges of the first channel, resulting in uneven liquid flow in the first main channel 1, which affects the uniform flow of the thermal management component 300.

[0188] In this embodiment, the first spoiler 410 can divert the liquid at the first inlet end so that the liquid can first flow to the first wall 1a and the second wall 1b, thereby alleviating the problem of uneven liquid flow rate in the first main channel 1 caused by the resistance of the first wall 1a and the second wall 1b to the liquid.

[0189] In the above embodiment, the first spoiler 410 improves the problem of uneven flow velocity in the first main channel 1. In addition to the first main channel 1, the second main channel 2 also has the problem of uneven flow velocity. To improve the problem of uneven flow velocity in the second main channel 2, in some embodiments, with continued reference to Figures 4 and 5, the second main channel 2 has a third wall 2a and a fourth wall 2b that are opposite to each other along a first direction Y, and the second inflow end 2c is provided with a second spoiler 420. Along the first direction Y, the second spoiler 420 is spaced apart from the third wall 2a, and the second spoiler 420 is spaced apart from the fourth wall 2b. Along the second direction X, the second spoiler 420 is spaced apart from the second group of flow channels 6.

[0190] The second spoiler 420 has the same function as the first spoiler 410 , and for the sake of brevity, details thereof will not be repeated here.

[0191] In this embodiment, the second spoiler 420 can divert the liquid at the second inlet end 2c so that the liquid can first flow to the third wall 2a and the fourth wall 2b, thereby alleviating the problem of uneven liquid flow rate in the second main channel 2 caused by the resistance of the third wall 2a and the fourth wall 2b to the liquid.

[0192] In order to further improve the flow uniformity of the thermal management component 300, in some embodiments, with continued reference to Figures 4 and 5, the thermal management component 300 further has a liquid outlet channel 340, a fourth group of channels 360, a fifth group of channels 370, a third main channel 3 and a fourth main channel 4.

[0193] The third main channel 3 and the fourth main channel 4 are arranged side by side and spaced apart along the first direction Y. In the second direction X, the third main channel 3 has a third outflow end 3 c , and the fourth main channel 4 has a fourth outflow end 4 c .

[0194] The fourth group of flow channels 360 includes at least one fourth branch flow channel 360a, and the third outflow end 3c is connected to the liquid outlet flow channel 340 via the fourth group of flow channels 360. The fifth group of flow channels 370 includes at least one fifth branch flow channel 370a, and the fourth outflow end 4c is connected to the liquid outlet flow channel 340 via 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.

[0195] Among them, along the liquid flow direction S2 in the liquid outlet 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.

[0196] As shown in Figures 4 and 5, along the second direction X, the third main channel 3 has a third inflow end 3d and a third outflow end 3c opposite each other. Liquid enters the third main channel 3 from the third inflow end 3d and flows out of the third main channel 3 from the third outflow end 3c. Similarly, along the second direction X, the fourth main channel 4 has a fourth inflow end 4d and a fourth outflow end 4c opposite each other. Liquid enters the fourth main channel 4 from the fourth inflow end 4d and flows out of the fourth main channel 4 from the fourth outflow end 4c.

[0197] The third outflow end 3c is connected to the liquid outlet channel 340 via the fourth set of flow channels 360. It is understood that the fourth set of flow channels 360 is located between the third outflow end 3c and the liquid outlet channel 340. The fourth set of flow channels 360 connects the third outflow end 3c with the liquid outlet channel 340. The liquid in the third main channel 3 passes through the fourth set of flow channels 360 and then enters the liquid outlet channel 340. It is understood that the cross-sectional area of ​​the fourth set of flow channels 360 affects the flow rate of the liquid in the third main channel 3. The flow rate of the liquid in the third main channel 3 is related to the size of the fourth set of flow channels 360.

[0198] The fourth outflow end 4c is connected to the liquid outlet channel 340 via the fifth set of flow channels 370. It is understood that the fifth set of flow channels 370 is located between the fourth outflow end 4c and the liquid outlet channel 340. The fifth set of flow channels 370 connects the fourth outflow end 4c with the liquid outlet channel 340. The liquid in the fourth main channel 4 passes through the fifth set of flow channels 370 and then enters the liquid outlet channel 340. It is understood that the cross-sectional area of ​​the fifth set of flow channels 370 affects the flow rate of the liquid in the fourth main channel 4. The flow rate of the liquid in the fourth main channel 4 is related to the size of the fifth set of flow channels 370.

[0199] The fourth group of flow channels 360 includes at least one fourth branch flow channel 360a. It is understood that there may be one or more fourth branch flow channels 360a. If there is only one fourth branch flow channel 360a (as shown in Figures 4 and 5), the cross-sectional area of ​​the fourth branch flow channel 360a is the sum of the cross-sectional areas of the fourth group of flow channels 360. If there are multiple fourth branch flow channels 360a (as shown in Figures 7 and 8), the sum of the cross-sectional areas of the multiple fourth branch flow channels 360a is the sum of the cross-sectional areas of the first group of flow channels 5.

[0200] The fifth group of flow channels 370 includes at least one fifth branch flow channel 370a. It is understood that there may be one or more fifth branch flow channels 370a. If there is only one fifth branch flow channel 370a (as shown in Figures 4 and 5), the cross-sectional area of ​​the fifth branch flow channel 370a is the sum of the cross-sectional areas of the fifth group of flow channels 370. If there are multiple fifth branch flow channels 370a (as shown in Figures 7 and 8), the sum of the cross-sectional areas of the multiple fifth branch flow channels 370a is the sum of the cross-sectional areas of the fifth group of flow channels 370.

[0201] 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 sum of the cross-sectional areas of all fourth branch flow channels 360 a is greater than the sum of the cross-sectional areas of all fifth branch flow channels 370 a .

[0202] It should be noted that, depending on the specific setting requirements, the relative positions of the third main channel 3, the fourth main channel 4 and the first main channel 1, the second main channel 2 are different, and the relative positions of the liquid outlet channel 340 and the liquid inlet channel 330 will also be different. Therefore, the liquid flow direction S2 in the liquid outlet channel can be the same as the liquid flow direction S1 in the liquid inlet channel, or the liquid flow direction S2 in the liquid outlet channel can be different from the liquid flow direction S1 in the liquid inlet channel. For example, as shown in Figures 4 and 5, the liquid outlet channel 340 and the liquid inlet channel 330 are arranged on the same side of the second direction X of the thermal management component 300, and the liquid flow direction S2 in the liquid outlet channel is the same as the liquid flow direction S1 in the liquid inlet channel.

[0203] The cross-sectional areas of the fourth branch channel 360a and the fifth branch channel 370a can be measured using the same method as that of measuring the cross sections of the first branch channel 5a and the second branch channel 6a, which will not be described here for brevity.

[0204] Because the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370, the third main channel 3 is located upstream of the fourth main channel 4. Typically, there is also a flow imbalance between the third main channel 3 and the fourth main channel 4, with the flow rate of the liquid in the third main channel 3 being greater than the flow rate of the liquid in the fourth main channel 4. Therefore, it is necessary to balance the flow rates of the liquid in the third main channel 3 and the fourth main channel 4.

[0205] In this embodiment, the fourth group of flow channels 360 connects the third flow channel with the liquid outlet flow channel 340, and the fourth group of flow channels 360 is capable of directing liquid out of the third main channel 3. The fifth group of flow channels 370 connects the fourth main channel 4 with the liquid outlet flow channel 340, and the fifth group of flow channels 370 is capable of directing liquid out of the fourth main 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. This increases the flow rate of liquid out of the fourth main channel 4, reduces the difference between the flow rates of liquid in the third main channel 3 and the fourth main channel 4, and makes the flow rates of liquid distributed to the third and fourth main channels 3 and 4 more uniform, thereby further improving the flow uniformity of the thermal management component 300, enhancing the heat exchange effect of the thermal management component 300, improving the cycling performance of the battery cell 10, and improving the reliability of the battery 100.

[0206] 4 and 5 , in some embodiments, the first main channel 1 , the second main channel 2 , the third main channel 3 and the fourth main channel 4 are sequentially arranged along the first direction Y.

[0207] Exemplarily, the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4 all extend linearly along the second direction X, and have the same extension length. The first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4 are arranged in sequence along the first direction X.

[0208] In this embodiment, the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4 are arranged in sequence along the first direction Y. This can reduce the size of the channel in the second direction X, allowing the channel layout to be more compact, thereby obtaining a smaller thermal management component 300 and improving the energy density of the battery using the thermal management component.

[0209] 4 and 5 , in some embodiments, in the second direction X, the first main channel 1 has a first outflow end 1d opposite to the first inflow end, the second main channel 2 has a second outflow end 2d opposite to the second inflow end 2c, the third main channel 3 has a third inflow end 3d opposite to the third outflow end 3c, and the fourth main channel 4 has a fourth inflow end 4d opposite to the fourth outflow end 4c; the thermal management component 300 also has a second connecting flow channel 8, which connects the first outflow end 1d, the second outflow end 2d, the third inflow end 3d and the fourth inflow end 4d.

[0210] It can be understood that one end of the first main channel 1 is connected to the second connecting channel 8, and the other end of the first main channel 1 is connected to the liquid inlet channel 330 via the first group of channels 5. One end of the second main channel 2 is connected to the second connecting channel 8, and the other end of the second main channel 2 is connected to the liquid inlet channel 330 via the second group of channels 6. One end of the third main channel 3 is connected to the second connecting channel 8, and the other end of the third main channel 3 is connected to the liquid outlet channel 340 via the fourth group of channels 360; one end of the fourth main channel 4 is connected to the second connecting channel 8, and the other end of the fourth main channel 4 is connected to the liquid outlet channel 340 via the fifth group of channels 370.

[0211] 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 connected to the second connecting flow channel 8, so that the second connecting flow channel 8 can gather the liquid flowing out of the first main channel 1 and the second main channel 2, and divert the liquid to the third main channel 3 and the fourth main channel 4, thereby balancing the flow rate of the liquid in the first main channel 1, the second main channel 2, the third main channel 3 and the fourth main channel 4, thereby further improving the flow uniformity of the thermal management component 300, improving the heat exchange effect of the thermal management component 300, improving the cycle performance of the battery cell 10, and improving the reliability of the battery 100.

[0212] In some embodiments, the second communication channel 8 extends along the first direction.

[0213] In some embodiments, the thermal management component 300 has a liquid outlet 320 , which is disposed at one end of the liquid outlet channel 340 .

[0214] 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 .

[0215] 9 and 10 , in some embodiments, the thermal management component 300 further includes a third communicating flow channel 9 , which is disposed between the third outflow end 3 c and the fourth outflow end 4 c along the first direction Y and is communicated with the third outflow end 3 c and the fourth outflow end 4 c, respectively.

[0216] Exemplarily, as shown in FIG. 9 and FIG. 10 , the third communication flow channel 9 is located between the third main flow channel 3 and the fourth main flow channel 4 , and the third communication flow channel 9 extends linearly along the first direction Y.

[0217] 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, in addition to the fourth group of flow channels 360, the third connecting flow channel 9 can also discharge 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, and the total flow rate of the liquid in thermal management can be increased, thereby improving the heat exchange effect of the thermal management component 300.

[0218] 10 and 11 , in some embodiments, the thermal management component 300 further includes a sixth group of flow channels 380 , the sixth group of flow channels 380 including at least one sixth branch flow channel 380 a, and 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 .

[0219] It can be understood that the sixth group of flow channels 380 connects the third connecting flow channel 9 with the liquid outlet flow channel 340, and the sixth group of flow channels 380 can discharge liquid from the third connecting flow channel 9. After the sixth group of flow channels 380 is added, the liquid in the third main flow channel 3 can partially enter the sixth group of flow channels 380, and the liquid in the fourth main flow channel 4 can also partially enter the sixth group of flow channels 380.

[0220] The number of the sixth branch channel 380a can be one or more. For example, in FIG11 and FIG12 , the number of the sixth branch channel 380a is one.

[0221] 11 and 12 , there is one sixth branch channel 380 a , the sixth group of channels 380 extends along the second direction X, and the second group of channels 6 , the fourth group of channels 360 and the fifth group of channels 370 are parallel to each other.

[0222] In this embodiment, the third connecting flow channel 9 is connected to the liquid outlet flow channel 340 via the sixth group of flow channels 380. The sixth group of flow channels 380 can guide the liquid out of the third connecting flow channel 9, further reducing flow resistance, alleviating the pressure drop of the liquid, and increasing the total flow rate of the liquid during thermal management, thereby improving the heat exchange effect of the thermal management component 300. In addition, it can also alleviate the occurrence of backflow and turbulence caused by the large flow rate and excessive flow rate of the liquid in the third main flow channel 3, which may cause the liquid to flow back into the fourth main flow channel 4.

[0223] Here, backflow refers to the phenomenon that the liquid in the third main flow channel 3 flows out from the third outflow end 3c but cannot be discharged in time and enters the fourth main flow channel 4 through the fourth outflow end 4c.

[0224] In some embodiments, 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 , 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 .

[0225] If there is one sixth branch channel 380a, the cross-sectional area of ​​the sixth branch channel 380a is the sum of the cross-sectional areas of the sixth group of channels 380. If there are multiple sixth branch channels 380a, the sum of the cross-sectional areas of the multiple sixth branch channels 380a is the sum of the cross-sectional areas of the sixth group of channels 380.

[0226] The cross-sectional area of ​​the sixth branch channel 380a can be measured using the same measurement method as that of the first branch channel 5a and the second branch channel 6a, which will not be repeated here for the sake of brevity.

[0227] 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 successively. In this way, along the liquid flow direction S2 in the liquid outlet flow channel, the resistance encountered by the liquid decreases successively, which is beneficial to increasing the flow rate of the liquid in the thermal management component 300, and is beneficial to improving the flow uniformity of the thermal management component 300, thereby improving the heat exchange effect of the thermal management component 300.

[0228] 4 , in some embodiments, along the liquid flow direction S2 in the liquid outlet channel, the liquid outlet channel 340 includes a second upstream section 340a located upstream of the fifth group of channels 370 and a second downstream section 340b located downstream of the fifth group of channels 370, the fourth group of 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 channels 360.

[0229] 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 group of flow channels 360. The second upstream section 340a is larger, and the pressure of the liquid in the second upstream section 340a is lower.

[0230] The second upstream section 340a and the second downstream section 340b can be arranged in various forms. 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. For another example, the second upstream section 340a and the second downstream section 340b are arranged at an angle. In this case, the second upstream section 340a and the second downstream section 340b are arranged at a discount. The liquid in the second upstream section 340a needs to pass through the 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. For example, as shown in Figures 4 and 5, 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.

[0231] In this embodiment, the cross-sectional area of ​​the second downstream section 340b is greater than the sum of the cross-sectional areas of the fourth group of flow channels 360. Thus, compared with the liquid in the fourth group of flow channels 360, the liquid in the second upstream section 340a is subjected to less pressure. The second upstream section 340a can alleviate the pressure drop, thereby obtaining 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.

[0232] In some embodiments, the cross-sectional area of ​​the second downstream section 340b is greater than that of 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. This further alleviates the pressure drop of the thermal management component 300.

[0233] In some embodiments, the liquid outlet 320 is disposed in the second downstream section 340 b , one end of the second downstream section 340 b is connected to the second upstream section 340 a , and the other end of the second downstream section 340 b is connected to the liquid outlet 320 .

[0234] 4 and 5 , 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 the third outflow end 3c is provided with a third spoiler 430; along the first direction Y, the third spoiler 430 is spaced apart from the fifth wall 3a, and the third spoiler 430 is spaced apart from the sixth wall 3b; along the second direction X, the third spoiler 430 is spaced apart from the fourth group of flow channels 360.

[0235] When the thermal management component 300 is prepared separately from the first plate body and the second plate body, and the second plate body covers the groove punched by the first plate body to form a flow channel, the fifth wall 3a and the sixth wall 3b are the two groove walls of the groove in the corresponding area of ​​the third main channel 3, and a gap is set between the third spoiler 430 and the two groove walls of the groove.

[0236] For ease of description, the fifth wall 3a and the sixth wall 3b are hereinafter referred to as the edges of the third main channel 3. Along the first direction Y, the area between the fifth wall 3a and the sixth wall 3b is the center of the third main channel 3. When liquid flows in the third main channel 3, the fifth wall 3a and the sixth wall 3b create resistance to the liquid flow. This results in a low flow velocity and flow rate at the edges of the third main channel 3. There is also a flow velocity difference between the center of the third main channel 3 and the edges of the third main channel, resulting in uneven liquid flow in the third main channel 3, which affects the uniformity of the thermal management component 300. Therefore, the liquid flow velocity at the edges of the third main channel 3 needs to be increased.

[0237] In this embodiment, the third spoiler 430 can divert the liquid at the third outflow end 3c so that the liquid can first flow to the position of the fifth wall 3a and the sixth wall 3b and then flow out of the third main channel 3, thereby alleviating the problem of uneven liquid flow rate in the third main channel 3 caused by the resistance of the fifth wall 3a and the sixth wall 3b to the liquid.

[0238] Similarly, the fourth main channel 4 also has the problem of uneven flow velocity. In order to improve the problem of uneven flow velocity in the fourth main channel 4, in some embodiments, referring to Figures 4 and 5, the fourth main channel 4 has a seventh wall 4a and an eighth wall 4b opposite to each other along the first direction Y, and the fourth outflow end 4c is provided with a fourth spoiler 440; along the first direction Y, the fourth spoiler 440 is spaced apart from the seventh wall 4a, and the fourth spoiler 440 is spaced apart from the eighth wall 4b; along the second direction X, the fourth spoiler 440 is spaced apart from the fifth group of flow channels 370.

[0239] The fourth spoiler 440 has the same function as the third spoiler 430 , and for the sake of brevity, details thereof will not be repeated here.

[0240] In this embodiment, the fourth spoiler 440 can divert the liquid at the fourth outflow end 4c so that the liquid can first flow to the seventh wall 4a and the eighth wall 4b and then flow out of the fourth main channel 4, thereby alleviating the problem of uneven liquid flow rate in the fourth main channel 4 caused by the resistance of the seventh wall 4a and the eighth wall 4b to the liquid.

[0241] An embodiment of the present application further provides a battery 100 , which includes the thermal management component 300 provided in any of the above embodiments.

[0242] An embodiment of the present application further provides an electric device, which includes the battery 100 provided in any of the above embodiments, and the battery 100 is used to power the electric device.

[0243] An embodiment of the present application also 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 group of channels 5, a second group of channels 6, a third group of channels 350, a fourth group of channels 360, a fifth group of channels 370, a sixth group of channels 380, a first connecting channel 7, a second connecting channel 8 and a third connecting channel 9.

[0244] 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 along the first direction Y at intervals.

[0245] In the second direction X, the first main channel 1 has an opposing first inflow end and a first outflow end 1d, the second main channel 2 has an opposing second inflow end 2c and a second outflow end 2d, the third main channel 3 has an opposing third inflow end 3d and a third outflow end 3c, and the fourth main channel 4 has an opposing fourth inflow end 4d and a fourth outflow end 4c. 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.

[0246] The first group of flow channels 5 includes at least one first branch channel 5a, and the first inflow end is connected to the liquid inlet channel 330 through the first group of flow channels 5. The second group of flow channels 6 includes at least one second branch channel 6a, and the second inflow end 2c is connected to the liquid inlet channel 330 through the second group of flow channels 6. Along the second direction X, the projection of the first group of flow channels 5 falls within the projection of the first inflow end, and the projection of the second group of flow channels 6 falls within the projection of the second inflow end 2c. The first connecting flow channel 7 is arranged between the first inflow end and the second inflow end 2c, and is connected to the first inflow end and the second inflow end 2c, respectively. The third group of flow channels 350 includes at least one third branch channel 350a, and the first connecting flow channel 7 is connected to the liquid inlet channel 330 through the third group of flow channels 350; along the second direction X, the projection of the third group of flow channels 350 falls within the projection of the first connecting flow channel 7. Among them, along the liquid flow direction S1 in the liquid inlet channel, the second group of flow channels 6 is located downstream of the first group of flow channels 5, and the third group of flow channels 350 is located between the first group of flow channels 5 and the second group of flow channels 6. 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 smaller than the sum of the cross-sectional areas of the second group of flow channels 6.

[0247] The fourth group of flow channels 360 includes at least one fourth branch flow channel 360a. The third outflow end 3c is connected to the liquid outlet channel 340 via 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 connected to the liquid outlet channel 340 via 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 branch flow channel 380a. The third connecting flow channel 9 is connected to the liquid outlet channel 340 via 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. Among them, along the liquid flow direction S2 in the liquid outlet channel, the fourth group of flow channels 360 is located upstream of the fifth group of flow channels 370, and 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.

[0248] 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 channel, the first upstream section 330a is located upstream of the first group of flow channels 5 in the liquid inlet channel 330, 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. 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.

[0249] Along the liquid flow direction S2 in the outlet channel, the outlet 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 channels 370, and the second downstream section 340b is located downstream of the fifth group of channels 370. The fourth group of channels 360 is connected to the second upstream section 340a. 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 channels 360. The second upstream section 340a and the second downstream section 340b are arranged at an obtuse angle.

[0250] The liquid inlet 310 is disposed at one end of the first upstream section 330a away from the first downstream section 330b, and the liquid outlet 320 is disposed at one end of the second downstream section 340b away from the second upstream section 340a.

[0251] The first main channel 1 has a first wall 1a and a second wall 1b opposite to each other along the first direction Y, and a first spoiler 410 is provided at the first inflow end; along the first direction Y, the first spoiler 410 is spaced apart from the first wall 1a, and the first spoiler 410 is spaced apart from the second wall 1b; along the second direction X, the first spoiler 410 is spaced apart from the first group of flow channels 5.

[0252] 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. The second inflow end 2c is provided with a second spoiler 420. Along the first direction Y, the second spoiler 420 is spaced apart from the third wall 2a, and the second spoiler 420 is spaced apart from the fourth wall 2b. Along the second direction X, the second spoiler 420 is spaced apart from the second group of flow channels 6.

[0253] 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 the third outflow end 3c is provided with a third spoiler 430; along the first direction Y, the third spoiler 430 is spaced apart from the fifth wall 3a, and the third spoiler 430 is spaced apart from the sixth wall 3b; along the second direction X, the third spoiler 430 is spaced apart from the fourth group of flow channels 360.

[0254] The fourth main channel 4 has a seventh wall 4a and an eighth wall 4b opposite to each other along the first direction Y, and the fourth inflow end 4d is provided with a fourth spoiler 440; along the first direction Y, the fourth spoiler 440 is spaced apart from the seventh wall 4a, and the fourth spoiler 440 is spaced apart from the eighth wall 4b; along the second direction X, the fourth spoiler 440 is spaced apart from the fifth group of flow channels 370.

[0255] 4 , a plurality of fifth spoilers 450 are further provided in the first main channel 1 , the second main channel 2 , the third main channel 3 , the fourth main channel 4 and the second connecting channel 8 . The plurality of fifth spoilers 450 are arranged in sequence along the flow direction of the liquid to improve the flow uniformity of the thermal management component 300 .

[0256] 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 smaller than the sum of the cross-sectional areas of the second group of flow channels 6. This balances the flow rates of the first main flow channel 1 and the second main flow channel 2 and alleviates the pressure drop near the liquid inlet flow channel 330, thereby improving the flow uniformity and reliability of the thermal 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 smaller than the sum of the cross-sectional areas of the fifth group of flow channels 370. This balances the flow rates of the third main flow channel 3 and the fourth main flow channel 4 and alleviates the pressure drop near the liquid outlet flow channel 340, thereby improving the flow uniformity and reliability of the thermal management component 300. The first spoiler 410 can balance the flow velocity at the edge and middle of the first main channel 1, the second spoiler 420 can balance the flow velocity at the edge and middle of the second main channel 2, the third spoiler 430 can balance the flow velocity at the edge and middle of the third main channel 3, and the fourth spoiler 440 can balance the flow velocity at the edge and middle of the fourth main channel 4, further improving the flow uniformity and reliability of the thermal management component 300.

[0257] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0258] The above embodiments are intended only to illustrate the technical solutions of this application and are not intended to limit this application. Those skilled in the art will appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application are intended to be within the scope of protection of this application.

Claims

1. A thermal management component, characterized in that: The thermal management component comprises a liquid inlet channel, a first group of flow channels, a second group of flow channels, a first main flow channel and a second main flow channel; The first main channel and the second main channel are arranged side by side and spaced apart along a first direction; In a second direction, the first main flow channel has a first inflow end, the second main flow channel has a second inflow end, and the second direction intersects the first direction; The first group of flow channels includes at least one first branch flow channel, and the first inlet end is connected to the liquid inlet flow channel through the first group of flow channels; The second group of flow channels includes at least one second branch flow channel, and the second inlet end is connected to the liquid inlet flow channel through the second group of flow channels; Along the second direction, the projection of the first group of flow channels falls within the projection of the first inflow end, and the projection of the second group of flow channels falls within the projection of the second inflow end; Wherein, along the liquid flow direction in the liquid inlet 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.

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

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

4. The thermal management component according to claim 1, wherein: There are multiple first runners, which are spaced apart along the first direction. There is one second runner, and a cross-sectional area of the second runner is greater than the sum of the cross-sectional areas of all the first runners.

5. The thermal management component according to claim 1, characterized in that There is one first branch channel, and there are multiple second branch channels. The multiple second branch channels are spaced apart along the first direction, and the sum of the cross-sectional areas of all the second branch channels is greater than the cross-sectional area of the first branch channel.

6. The thermal management component according to claim 1, characterized in that There are multiple first diversion channels, and the multiple first diversion channels are arranged at intervals along the first direction; there are multiple second diversion channels, and the multiple second diversion channels are arranged at intervals along the first direction, and 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 to 6, characterized in that: The heat management component further has a liquid inlet, which is arranged at one end of the liquid inlet channel.

8. The thermal management component according to any one of claims 1 to 7, characterized in that: 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 communicated with the first inflow end and the second inflow end respectively.

9. The thermal management component according to claim 8, characterized in that The thermal management component further has a third group of flow channels, the third group of flow channels includes at least one third branch flow channel, and the first connecting flow channel is connected to the liquid inlet flow channel through the third group of flow channels; Along the second direction, a projection of the third group of flow channels falls within a projection of the first connecting flow channels.

10. The thermal management component according to claim 9, characterized in that 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 smaller than the sum of the cross-sectional areas of the second group of flow channels.

11. The thermal management component according to any one of claims 1 to 10, 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, which satisfies 15 mm ≤ W3 ≤ 25 mm.

13. The thermal management component according to claim 11 or 12, characterized in that: The first downstream section extends along the first direction.

14. The thermal management component according to any one of claims 11 to 13, characterized in that: The first upstream section is arranged obliquely relative to the first downstream section.

15. The thermal management component according to any one of claims 1 to 14, characterized in that: The first main flow channel has a first wall and a second wall opposite to each other along the first direction, and the first inflow end is provided with a first spoiler; Along the first direction, the first spoiler is spaced apart from the first wall, and the first spoiler is spaced apart from the second wall; Along the second direction, the first spoiler is spaced apart from the first group of flow channels.

16. The thermal management component according to any one of claims 1 to 15, characterized in that: The second main flow channel has a third wall and a fourth wall opposite to each other along the first direction, and the second inflow end is provided with a second spoiler; Along the first direction, the second spoiler is spaced apart from the third wall, and the second spoiler is spaced apart from the fourth wall; Along the second direction, the second spoiler is spaced apart from the second group of flow channels.

17. The thermal management component according to any one of claims 1 to 16, characterized in that: The thermal management component further comprises a liquid 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 flow channel has a third outflow end, and the fourth main flow channel has a fourth outflow end; The fourth group of flow channels includes at least one fourth branch flow channel, and the third outflow end is connected to the liquid outlet flow channel through the fourth group of flow channels; The fifth group of flow channels includes at least one fifth branch flow channel, and the fourth outflow end is connected to the liquid 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 outflow end, and the projection of the fifth group of flow channels falls within the projection of the fourth outflow end; Wherein, along the liquid flow direction in the liquid 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, characterized in that The first main channel, the second main channel, the third main channel and the fourth main channel are sequentially arranged along the first direction.

19. The thermal management component according to claim 17 or 18, characterized in that: In the second direction, the first main channel has a first outflow end opposite to the first inflow end, the second main channel has a second outflow end opposite to the second inflow end, the third main channel has a third inflow end opposite to the third outflow end, and the fourth main 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 connects the first outflow end, the second outflow end, the third inflow end, and the fourth inflow end.

20. The thermal management component according to any one of claims 17 to 19, characterized in that: The heat management component further has a liquid outlet, and the liquid outlet is arranged at one end of the liquid outlet channel.

21. The thermal management component according to any one of claims 17 to 20, characterized in that: 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 communicated with the third outflow end and the fourth outflow end respectively.

22. The thermal management component according to claim 21, characterized in that The thermal management component further has a sixth group of flow channels, the sixth group of flow channels including at least one sixth branch flow channel, and the third connecting flow channel is connected to the liquid outlet flow channel through the sixth group of flow channels; Along the second direction, a projection of the sixth group of flow channels falls within a projection of the third communicating flow channels.

23. The thermal management component according to claim 22, characterized in that 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 smaller than the sum of the cross-sectional areas of the fifth group of flow channels.

24. The thermal management component according to any one of claims 17 to 23, characterized in that: Along the liquid flow direction in the liquid outlet channel, the liquid outlet channel includes a second upstream section located upstream of the fifth group of channels and a second downstream section located downstream of the fifth group of channels. The fourth group of 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 channels.

25. The thermal management component according to any one of claims 17 to 24, characterized in that: The third main flow channel has a fifth wall and a sixth wall opposite to each other along the first direction, and the third outflow end is provided with a third spoiler; Along the first direction, the third spoiler is spaced apart from the fifth wall, and the third spoiler is spaced apart from the sixth wall; Along the second direction, the third spoiler is spaced apart from the fourth group of flow channels.

26. The thermal management component according to any one of claims 17 to 25, characterized in that: The fourth main flow channel has a seventh wall and an eighth wall opposite to each other along the first direction, and the fourth outflow end is provided with a fourth spoiler; Along the first direction, the fourth spoiler is spaced apart from the seventh wall, and the fourth spoiler is spaced apart from the eighth wall; Along the second direction, the fourth spoiler and the fifth group of flow channels are spaced apart.

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

28. An electrical device, characterized in that: Including the battery of claim 27.

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