Current collecting component, heat management assembly, battery and power utilization device

Abstract

The invention discloses a current collecting component, a heat management assembly, a battery and a power utilization device, the current collecting component comprises a device main body, the device main body is provided with a main inlet, a main outlet, a plurality of branch inlets and a plurality of branch outlets, the plurality of branch outlets are communicated with the main outlet, an extension flow channel is formed in the device main body, one end of the extension flow channel is communicated with the main inlet, and the other end of the extension flow channel is communicated with the heat management assembly; one of the multiple branch inlets is communicated with the main inlet, the other branch inlets are communicated with the extending flow channel, the number of the branch inlets and the number of the branch outlets are equal, the branch inlets and the branch outlets are in one-to-one correspondence, and the branch inlets are adjacent to the corresponding branch outlets. According to the current collecting component, the temperature in the battery can be controlled through a plurality of heat management components, the temperature uniformity of the battery can be improved, and the reliability of the battery is improved. And the plurality of branch inlets are distributed in a dispersed manner, so that the probability of mounting interference of the plurality of heat management components is reduced, the heat management components are kept flat as a whole, and the space occupied by the heat management components is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a current collecting component, a thermal management component, a battery and an electrical device. Background Art

[0002] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. The battery consists of a box and multiple battery cells contained in the box. As the core component of new energy vehicles, batteries have high requirements in terms of safety and service life. The battery cells in the battery will generate a lot of heat during the continuous charging and discharging process, which will cause the internal temperature of the battery to rise sharply, seriously affecting the reliability of the battery. Summary of the invention

[0003] The embodiments of the present application provide a current collecting component, a thermal management assembly, a battery, and an electrical device, which can effectively improve the reliability of the battery.

[0004] In the first aspect, an embodiment of the present application provides a flow collecting component, including: a device body, on which a main inlet, a main outlet, multiple branch inlets, and multiple branch outlets are provided, the multiple branch outlets are connected to the main outlet, an extension flow channel is formed inside the device body, one end of the extension flow channel is connected to the main inlet, and the other end extends to a side away from the main inlet, one of the multiple branch inlets is connected to the main inlet, and the rest are connected to the extension flow channel, the number of branch inlets and branch outlets is equal and corresponds one to one, and the branch inlets and corresponding branch outlets are adjacent.

[0005] According to the current collecting component of the embodiment of the present application, multiple branch inlets and multiple branch outlets are set through the device body, and the current collecting component can connect multiple thermal management components, so that the temperature inside the battery can be controlled by multiple thermal management components, which can reduce the probability of a large temperature difference in the battery, improve the temperature uniformity of the battery, reduce the probability of a sharp temperature rise in the battery, and improve the reliability of the battery. In addition, multiple branch inlets can be connected to the main inlet through an extended flow channel, and the branch inlets and corresponding branch outlets are adjacent, so that multiple branch inlets can be arranged in a dispersed manner, which is conducive to reducing the probability of installation interference of multiple thermal management components, reducing the need for thermal management components to bend and avoid, and is conducive to keeping the thermal management components flat as a whole, and reducing the large space occupied by thermal management components.

[0006] In some embodiments of the present application, the extended flow channel extends along the length direction of the device body, and the multiple branch outlets are arranged on the same side of the device body in the length direction.

[0007] In the above technical solution, the extended flow channel extends along the length direction of the device body, so that the extended flow channel is a straight flow channel, which is conducive to reducing the flow resistance in the extended flow channel and reducing the flow rate loss of the refrigerant. The multiple branch outlets are arranged on the same side of the device body, which is conducive to the arrangement of multiple thermal management components on the same side of the device body, so that the position layout of the multiple thermal management components is relatively compact, and the size of the thermal management component in the second direction can be reduced, thereby further reducing the space occupied by the thermal management component.

[0008] In some embodiments of the present application, at least part of the plurality of sub-inlets and the sub-outlet are arranged on the same side of the device body.

[0009] In the above technical solution, the distance between the two ends of the pipeline of the thermal management components connected to the branch inlet and branch outlet on the same side among the multiple thermal management components can be relatively close, which is beneficial to reducing the length of the thermal management components, saving materials of the thermal management components, and reducing costs. At the same time, it also enables the end space in the first direction of the device body to not need to be connected to the thermal management components, so that there is relatively ample space for arranging other components.

[0010] In some embodiments of the present application, some of the multiple sub-inlets and the corresponding sub-outlets are arranged on two adjacent sides of the device body.

[0011] In the above technical scheme, some of the multiple sub-inlets and the corresponding sub-outlets are arranged on adjacent two sides of the device body, and the rest are arranged on the same side of the device body with the corresponding sub-outlets. With this scheme, on the one hand, the sub-inlet and the corresponding sub-outlet are arranged on the same side, so that the two ends of the corresponding thermal management component can be close to each other, which is beneficial to reducing the length of the thermal management component and saving the material of the thermal management component. At the same time, it also makes the end space of the first direction of the device body not need to be connected to the thermal management component, which is beneficial to avoid other components of the battery and facilitate the installation of other components. On the other hand, the sub-inlet and the corresponding sub-outlet are arranged on adjacent two sides, and the device body can discharge refrigerant at the end in the first direction, which is beneficial to reducing the size of the device body in the first direction, can reduce the material of the device body and reduce costs.

[0012] In some embodiments of the present application, the device body has a height direction, a first connecting flow channel is formed between the branch outlet and the main outlet, and the first connecting flow channel and the extension flow channel are spaced apart in the height direction.

[0013] In the above technical scheme, it can be understood that the first connecting flow channel and the extended flow channel are arranged in layers in the height direction of the device body. The adoption of this scheme can reduce the probability of interference between the first connecting flow channel and the extended flow channel, which is beneficial to improving the manufacturability of the device body. At the same time, it can also reduce the size of the device body in the second direction, thereby reducing the volume of the device body and reducing the space occupied by the current collecting component, which is beneficial to having more space in the battery to arrange other components, or to improve the energy density of the battery.

[0014] In some embodiments of the present application, a reference plane perpendicular to the height direction is made, and on the reference plane, the orthographic projection of the extended flow channel and the orthographic projection of the first connecting flow channel at least partially overlap.

[0015] In the above technical solution, by at least partially overlapping the orthographic projection of the extended flow channel with the orthographic projection of the first connecting flow channel on the reference plane, the size of the device body in the second direction can be further reduced, thereby reducing the space occupied by the current collecting component, which is conducive to having more space in the battery to arrange other components, thereby further improving the energy density of the battery.

[0016] In some embodiments of the present application, a second connecting flow channel is formed between one of the plurality of sub-inlets connected to the main inlet and the main inlet, and the second connecting flow channel and the extension flow channel are located on both sides of the main inlet.

[0017] In the above technical solution, by arranging the second connecting flow channel and the extension flow channel on both sides of the main inlet, the influence between the refrigerant flowing to the inlet of the second connecting flow channel and the inlet refrigerant flowing to the extension flow channel can be reduced, so that the refrigerant entering the main inlet can be distributed to the second connecting flow channel and the extension flow channel more evenly, thereby reducing the probability of large differences in refrigerant flow rates of multiple sub-inlets due to uneven refrigerant distribution, thereby reducing the probability of large temperature differences in the battery due to different refrigerant flow rates in multiple thermal management components, which is beneficial to improving the temperature control effect of the battery and improving the reliability of the battery.

[0018] In some embodiments of the present application, the device body has a width direction, a first connecting flow channel is formed between the branch outlet and the main outlet, and the first connecting flow channel and the extension flow channel are spaced apart along the width direction.

[0019] In the above technical solution, by arranging the first connecting flow channel and the extended flow channel at intervals along the width direction, the height dimension of the device body can be reduced, that is, the height dimension of the current collecting component can be reduced, which is beneficial to reducing the space occupied by the current collecting component in the height direction of the battery. The adoption of this solution can allow the battery to have ample space in the height direction to arrange more components or larger components. The adoption of this solution can also reduce the height dimension of the battery, thereby reducing the volume of the battery, which is beneficial to improving the energy density of the battery.

[0020] In some embodiments of the present application, a second connecting flow channel is formed between one of the multiple sub-inlets connected to the main inlet and the main inlet. The second connecting flow channel is arranged on a side of the main inlet away from the main outlet and is connected to the extension flow channel.

[0021] In the above technical scheme, the refrigerant at the main inlet first flows to the second connecting flow channel, a part of the refrigerant in the second connecting flow channel flows to the branch inlet, and the other part flows to the extension flow channel. With this scheme, the second connecting flow channel connects the extension flow channel and the branch inlet, and the structure of the device body is relatively simple, which can improve the manufacturability of the device body and reduce costs.

[0022] In some embodiments of the present application, the device body has a height direction, and a second connecting flow channel is formed between one of the multiple sub-inlets connected to the main inlet and the main inlet. The main inlet is connected to the second connecting flow channel along the height direction, and a reference plane perpendicular to the height direction is used. On the reference plane, the orthographic projection of the main inlet and the orthographic projection of the second connecting flow channel at least partially overlap.

[0023] In the above technical solution, by at least partially overlapping the orthographic projection of the main inlet and the second connecting flow channel on the reference plane, the position distribution between the main inlet and the second connecting flow channel can be made more compact, reducing the size of the device body in the first direction, thereby reducing the space occupied by the current collecting component in the battery, which is beneficial for the battery to have more space in the first direction to arrange components, can reduce the volume of the battery, and improve the energy density of the battery.

[0024] In some embodiments of the present application, one of the multiple sub-inlets is connected to the main inlet, and a second connecting flow channel is formed between the main inlet, the second connecting flow channel and the extension flow channel are located on both sides of the main inlet, a first connecting hole is formed between the extension flow channel and the main inlet, and a second connecting hole is formed between the second connecting flow channel and the main inlet, the orifice area of ​​the first connecting hole is S1, and the orifice area of ​​the second connecting hole is S2, wherein 0.5≤S1 / S2≤1.5.

[0025] In the above technical scheme, by setting the ratio of the orifice area S1 of the first connecting hole to the orifice area S2 of the second connecting hole in the range of 0.5 to 1.5, the pressure drop difference at the first connecting hole and the second connecting hole can be within an appropriate range, thereby reducing the probability of a large pressure drop difference between the first connecting hole and the second connecting hole, thereby regulating the refrigerant flow rate, which is beneficial for uniform distribution of the refrigerant to multiple sub-inlets. Moreover, the adoption of this scheme can make the refrigerant evenly distributed between the first connecting hole and the second connecting hole while reducing the manufacturing requirements for the device main body, which is beneficial for reducing costs.

[0026] In some embodiments of the present application, the device body has a length direction, the extension channel extends along the length direction, and the length in the length direction is L1, the second connecting channel extends along the width direction, and the length in the width direction is L2, wherein 0.2≤(S1 / L1) / (S2 / L2)≤5.

[0027] In the above technical solution, by setting the ratio of (S1 / L1) / (S2 / L2) in the range of 0.2 to 5, the pressure drop difference at the first connecting hole and the second connecting hole can be made smaller, further reducing the probability of a large pressure drop difference between the first connecting hole and the second connecting hole, thereby playing a role in accurately adjusting the refrigerant flow rate, which is conducive to more even distribution of the refrigerant to multiple sub-inlets.

[0028] In some embodiments of the present application, 0.8≤(S1 / L1) / (S2 / L2)≤1.2.

[0029] In the above technical solution, by setting (S1 / L1) / (S2 / L2) in the range of 0.8 to 1.2, the pressure drop difference at the first connecting hole and the second connecting hole is smaller, and the probability of a large pressure drop difference between the first connecting hole and the second connecting hole is also smaller, which can more accurately adjust the refrigerant flow rate, and is conducive to more evenly distributing the refrigerant to multiple sub-inlets, so that the refrigerant flow difference in multiple thermal management components is smaller, which is conducive to reducing the probability of large temperature differences in the battery, and can further improve the reliability of the battery.

[0030] In some embodiments of the present application, a first wall is formed between the main outlet and the extended flow channel, and a dimension of the first wall in the width direction is 0.5 mm to 2 mm.

[0031] In the above technical solution, by setting the size of the first wall in the width direction to be in the range of 0.5mm to 2mm, on the one hand, the first wall can have a more suitable wall thickness, relatively high strength, and not easy to be damaged; on the other hand, the wall thickness of the first wall will not be too large, and the position between the extended flow channel and the main outlet will be more compact, which is beneficial to reducing the size of the device body in the width direction, and is beneficial to reducing the volume of the device body, thereby reducing the space occupied by the device body, facilitating the arrangement of components in the battery, reducing the volume of the battery, and improving the energy density of the battery.

[0032] In some embodiments of the present application, there are two branch inlets and two branch outlets, and the two branch outlets include a first branch outlet and a second branch outlet arranged along the length direction of the device body, a first flow channel is formed between the first branch outlet and the main outlet, a second flow channel is formed between the second branch outlet and the main outlet, a second wall is formed between the first flow channel and the second flow channel, and the thickness of the second wall is 0.5mm to 2mm in the length direction of the device body.

[0033] In the above technical solution, by setting the thickness of the second wall in the range of 0.5mm to 2mm in the length direction of the device body, the distance between the first flow channel and the second flow channel can be relatively close, and the connecting area between the first flow channel and the second flow channel and the main outlet is relatively large, that is, the connecting opening between the first flow channel and the second flow channel and the main outlet is relatively large, so that the refrigerant can be evenly distributed in the first flow channel and the second flow channel, so that the difference in refrigerant flow rate in multiple thermal management components is relatively small.

[0034] In some embodiments of the present application, the flow collecting component further includes a first connecting pipe and a second connecting pipe, the first connecting pipe is connected to the main inlet, and the second connecting pipe is connected to the main outlet.

[0035] In the above technical solution, a first connecting pipe is provided to connect the main inlet, so as to facilitate the connection between the collecting component and the refrigerant input component. A second connecting pipe is provided to connect the main outlet, so as to facilitate the connection between the collecting component and the refrigerant output component, which is beneficial to the installation of the collecting component and the external components.

[0036] In the second aspect, the embodiments of the present application also provide a thermal management component, including: at least two thermal management components, the thermal management components having a refrigerant inlet and a refrigerant outlet connected to the internal flow path; such as the collecting component mentioned above, the branch inlets and the corresponding branch outlets form a group of matching structures, the number of matching structures and thermal management components is equal and one-to-one corresponding, wherein in each group of matching structures, the branch inlets are connected to the refrigerant inlet, and the branch outlets are connected to the refrigerant outlet.

[0037] In the above technical solution, by adopting the current collecting component, multiple thermal management components can be connected, and multiple thermal management components can be arranged side by side when connected with the current collecting component, and the installation interference between multiple thermal management components can be reduced, and the bending avoidance positions on the thermal management components can be reduced, which is beneficial to reducing the process manufacturing difficulty of the thermal management components and reducing the space occupied by the thermal management components.

[0038] In a third aspect, an embodiment of the present application further provides a battery, comprising the thermal management component described above.

[0039] In the above technical solution, by adopting the thermal management component, the probability of large temperature differences on the battery can be reduced, thereby improving the reliability of the battery. At the same time, the use of the thermal management component can also save space inside the battery, which is beneficial to the arrangement of components inside the battery or the placement of larger components, and is also beneficial to reducing the volume of the battery, thereby improving the energy density of the battery.

[0040] In a fourth aspect, an embodiment of the present application further provides an electrical device, comprising the thermal management component as described above, or a battery as described above.

[0041] In the above technical solution, by adopting the thermal management component or battery, the reliability of the battery used in the electrical device can be made higher, thereby improving the reliability of the electrical device, and also helping to improve the safety of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0044] Figure 2 An exploded view of the structure of a battery provided in some embodiments of the present application;

[0045] Figure 3 A schematic diagram of the three-dimensional structure of a current collecting component provided in some embodiments of the present application;

[0046] Figure 4 A side view of a current collecting component provided for some embodiments of the present application;

[0047] Figure 5 for Figure 4 Sectional view along line AA;

[0048] Figure 6 A schematic diagram of the three-dimensional structure of a current collecting component provided in yet another embodiment of the present application;

[0049] Figure 7 A front view of a current collecting component provided in yet another embodiment of the present application;

[0050] Figure 8 for Figure 7 Sectional view along line BB;

[0051] Fig. 9 Another embodiment provides Figure 7 Sectional view along line BB;

[0052] Fig.10 Another embodiment provides Figure 7 Sectional view along line BB;

[0053] Fig.11 A schematic diagram of a three-dimensional structure of a thermal management component provided in some embodiments of the present application;

[0054] Fig.12A schematic diagram of the three-dimensional structure of a thermal management component provided in some embodiments of the present application.

[0055] icon:

[0056] 1000. Vehicles;

[0057] 100, battery; 10, box; 11, first box body; 12, second box body; 20, battery cell; 30, thermal management assembly; 2, thermal management component; 21, refrigerant inlet; 22, refrigerant outlet; 3, current collecting component; 31, device body; 311, main inlet; 312, main outlet; 313, branch inlet; 314, branch outlet; 3141, first branch outlet; 3142, second branch outlet; 315, extension channel; 316, first connecting channel; 317, second connecting channel; 318, first connecting hole; 319, second connecting hole; 320, first wall; 321, first channel; 322, second channel; 323, second wall; 32, first connecting pipe; 32a, first annular groove; 33, second connecting pipe; 33a, second annular groove;

[0058] 200. Controller; 300. Motor. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. 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 and secondary relationship.

[0061] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0064] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0065] The term "plurality" used in the present application refers to two or more (including two).

[0066] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0067] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells or multiple battery modules. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0068] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. 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 a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0069] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0070] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. The battery consists of a box and multiple battery cells contained in the box. Among them, batteries, as core components of new energy vehicles, have high requirements in terms of safety, reliability, and cycle life.

[0071] In general power batteries, in order to make the battery obtain sufficient power, multiple battery cells in the battery box are usually stacked in an arrangement. However, the battery cells will generate a lot of heat during the continuous charging and discharging process, which will cause the internal temperature of the battery to rise, and the structure of multiple battery cells stacked will aggravate the occurrence of this phenomenon, which will seriously affect the performance and service life of the battery, and even cause the battery to have a large safety hazard during use, which is not conducive to the safety of consumers. Therefore, in the relevant technology, a thermal management component for cooling the battery cells is usually set inside the battery. The thermal management component includes a current collector and a cooling pipeline. The current collector is provided with a liquid inlet and a liquid outlet. The liquid inlet is used to pass the refrigerant, and the liquid outlet is used to discharge the refrigerant. The cooling pipeline is connected to the current collector and forms a loop, so that the refrigerant can circulate in the cooling pipeline for cooling and heating the battery. However, in the relevant technology, the thermal management component has a poor uniform cooling or heating effect on the battery, which will cause a large temperature difference on the battery, and cannot achieve a good temperature control effect, which seriously affects the reliability of the battery. Secondly, the thermal management component is relatively large in size, which will occupy a larger space inside the battery and affect the energy density of the battery.

[0072] Based on the above considerations, in order to solve the problem of poor reliability of the battery caused by the increase in internal temperature of the battery, the inventor has designed a current collecting component, including a device body, the device body is provided with a main inlet, a main outlet, multiple sub-inlets, and multiple sub-outlets, the multiple sub-outlets are connected to the main outlet, an extended flow channel is formed inside the device body, one end of the extended flow channel is connected to the main inlet, and the other end extends to a side away from the main inlet, one of the multiple sub-inlets is connected to the main inlet, and the rest are connected to the extended flow channel, the number of sub-inlets and sub-outlets is equal and one-to-one corresponding, and the sub-inlets and corresponding sub-outlets are adjacent.

[0073] In the current collecting component of this structure, multiple branch inlets and multiple branch outlets are arranged through the device body, and the current collecting component can be connected to multiple thermal management components, so that the temperature inside the battery can be controlled by multiple thermal management components, which can reduce the probability of a large temperature difference in the battery, improve the temperature uniformity of the battery, reduce the probability of a sharp temperature rise in the battery, and improve the reliability of the battery. In addition, multiple branch inlets can be connected to the main inlet through an extended flow channel, and the branch inlets and corresponding branch outlets are adjacent, so that multiple branch inlets can be arranged in a dispersed manner, which is conducive to reducing the probability of installation interference of multiple thermal management components, reducing the need to bend the thermal management components, and helping the thermal management components to remain flat, reducing the large space occupied by the thermal management components inside the battery, reducing the height size of the battery, and improving the energy density of the battery.

[0074] The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the current collecting component, thermal management component and battery disclosed in the present application can be used to form the electrical device, which is conducive to expanding the scope of application of the current collecting component and the thermal management component.

[0075] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0076] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0077] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0078] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0079] Please refer to Figure 2 , Figure 2The structural exploded diagram of the battery 100 provided for some embodiments of the present application. The battery 100 includes a box body 10 and a plurality of battery cells 20, and the battery cells 20 are used to be accommodated in the box body 10. Among them, the box body 10 is used to provide an assembly space for the battery cells 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include a first box body 11 and a second box body 12, and the first box body 11 and the second box body 12 cover each other, and the first box body 11 and the second box body 12 jointly define an assembly space for accommodating the battery cells 20. The second box body 12 can be a hollow structure with one end open, and the first box body 11 can be a plate-like structure. The first box body 11 covers the open side of the second box body 12, so that the first box body 11 and the second box body 12 jointly define the assembly space; the first box body 11 and the second box body 12 can also be hollow structures with one side open, and the open side of the first box body 11 covers the open side of the second box body 12. Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be in various shapes, such as a cylinder, a cuboid, etc.

[0080] In the battery 100, multiple battery cells 20 can be connected in series, in parallel, or in a hybrid connection. A hybrid connection means that multiple battery cells 20 are connected in series and in parallel. Multiple battery cells 20 can be directly connected in series, in parallel, or in a hybrid connection, and then the whole formed by multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 can also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection, and then multiple battery modules are connected in series, in parallel, or in a hybrid connection to form a whole, and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between multiple battery cells 20.

[0081] Please refer to Figure 2 The battery 100 may include multiple rows of battery cells 20, which may be arranged along the length direction of the box 10, and each row of battery cells 20 may include multiple battery cells 20 arranged along the width direction of the box 10. Alternatively, the multiple rows of battery cells 20 may be arranged along the width direction of the box 10, and each row of battery cells 20 may include multiple battery cells 20 arranged along the length direction of the box 10.

[0082] Each battery cell 20 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular or in other shapes. For example, refer to Figure 2 The battery cell 20 may be in the shape of a rectangular parallelepiped.

[0083] According to some embodiments of the present application, reference Figures 3 to 5 , Figure 3 This is a schematic diagram of a three-dimensional structure of a current collecting component 3 provided in some embodiments of the present application. Figure 5 The present invention provides a cross-sectional view of the internal structure of a flow collecting component 3 provided in some embodiments of the present application. The flow collecting component 3 includes a device body 31, on which a main inlet 311, a main outlet 312, a plurality of branch inlets 313, and a plurality of branch outlets 314 are provided, wherein the plurality of branch outlets 314 are connected to the main outlet 312, and an extension flow channel 315 is formed inside the device body 31, wherein one end of the extension flow channel 315 is connected to the main inlet 311, and the other end extends to a side away from the main inlet 311, one of the plurality of branch inlets 313 is connected to the main inlet 311, and the rest are connected to the extension flow channel 315, the number of branch inlets 313 and branch outlets 314 are equal and correspond one to one, and the branch inlets 313 and the corresponding branch outlets 314 are adjacent.

[0084] The current collecting component 3 may refer to a refrigerant converging component, which is used to introduce refrigerant and divert the refrigerant to external pipe components, and gather the refrigerant together again and transport it out after the refrigerant cycle is completed. Specifically, the current collecting component 3 can be understood as but not limited to a multi-pass refrigerant connector. Among them, the current collecting component 3 can be but not limited to a rectangular parallelepiped structure, a cube structure, a cylindrical structure, etc.

[0085] The current collecting component 3 can be applied to the thermal management component 30, and the thermal management component 30 can perform temperature management (such as cooling or heating) for the battery 100. The thermal management component 30 includes the thermal management component 2 and the current collecting component 3. The thermal management component 2 can be, but is not limited to, a tube-type component, which is used to circulate the refrigerant and form a refrigerant circuit together with the current collecting component 3. Among them, the tube-type component can be, but is not limited to, a round tube and a flat tube, etc.

[0086] refer to Figure 5 , the extended flow channel 315 may refer to a flow channel formed inside the flow collecting component 3, which is used to connect the main inlet 311 and the plurality of branch inlets 313. The extended flow channel 315 may be, but not limited to, a straight-line flow channel, an arc-shaped flow channel, a curved flow channel, etc., and the flow channel opening cross section of the extended flow channel 315 may be, but not limited to, a rectangle, a circle, a trapezoid, etc. Among them, the main inlet 311, the main outlet 312, the branch inlet 313, and the branch outlet 314 may be, but not limited to, a rectangular opening, a circular opening, a triangular opening, etc.

[0087] The current collecting component 3 with the above structure can be connected to multiple thermal management components 2, each thermal management component 2 is connected to the corresponding branch inlet 313 and branch outlet 314, and multiple thermal management components 2 can be injected with refrigerant from the main inlet 311. Compared with using one thermal management component 2 to form a refrigerant circuit to control the temperature of the battery 100, using multiple thermal management components 2 to form refrigerant circuits for temperature control can reduce the refrigerant circuit stroke length of each thermal management component 2, improve the heat exchange efficiency, and further improve the temperature control effect, which is beneficial to improving the temperature uniformity of the battery 100, reducing the probability of large temperature differences on the battery 100, and further improving the reliability of the battery 100.

[0088] The main inlet 311 and the main outlet 312 may be arranged spaced apart along a first direction X of the current collecting component 3, and the first direction X may be one of a length direction, a width direction, and a height direction of the current collecting component 3. Figure 3 The first direction X is the length direction of the current collecting component 3. Correspondingly, the extension channel 315 extends along the first direction X, and a plurality of branch inlets 313 are connected to the extension channel 315 and can be arranged at intervals along the first direction X, and the branch inlets 313 and the corresponding branch outlets 314 are arranged adjacent to each other.

[0089] Exemplary, reference Figure 3 , there are two branch inlets 313 and two branch outlets 314, the two branch inlets 313 are arranged at both ends of the first direction X of the current collecting component 3, and the two branch outlets 314 are arranged between the two branch inlets 313. In this embodiment, the current collecting component 3 can connect the two thermal management components 2, the two thermal management components 2 can be arranged side by side, and the two thermal management components 2 do not need to be bent to avoid. Of course, this is just an example, and the number of branch inlets 313 and branch outlets 314 can be but not limited to two, three, four, etc.

[0090] It can be seen that the current collecting component 3 with the above structure can connect multiple branch inlets 313 with the main outlet 312 through the extended flow channel 315 and arrange them in a dispersed manner. Since the branch inlets 313 and the corresponding branch outlets 314 are arranged adjacent to each other, the two ends of each thermal management component 2 can be connected with the corresponding branch inlets 313 and branch outlets 314, so the probability of position interference between any two adjacent thermal management components 2 can be reduced, and the situation where any thermal management component 2 needs to bend to avoid other thermal management components 2 can be reduced. Since multiple thermal management components 2 are mostly arranged at the top or bottom of the battery 100 for temperature control, the current collecting component 3 with the above structure is conducive to keeping the thermal management component 2 flat as a whole, reducing the space occupied by the thermal management component 2, and saving space in the battery 100.

[0091] According to the current collecting component 3 of the embodiment of the present application, a plurality of branch inlets 313 and a plurality of branch outlets 314 are arranged through the device body 31, and the current collecting component 3 can be connected to a plurality of thermal management components 2, so that the temperature inside the battery 100 can be controlled through a plurality of thermal management components 2, which can reduce the probability of a large temperature difference in the battery 100, improve the temperature uniformity of the battery 100, reduce the probability of a sharp temperature rise in the battery 100, and improve the reliability of the battery 100. In addition, a plurality of branch inlets 313 can be connected to the main inlet 311 through an extended flow channel 315, and the branch inlets 313 and the corresponding branch outlets 314 are adjacent, so that the plurality of branch inlets 313 can be arranged in a dispersed manner, which is conducive to reducing the probability of installation interference of a plurality of thermal management components 2, reducing the occurrence of the need for the thermal management component 2 to bend and avoid, and is conducive to keeping the thermal management component 2 flat as a whole, and reducing the large space occupied by the thermal management component 2.

[0092] In some embodiments of the present application, Figure 3 As shown, the extension channel 315 extends along the length direction of the device body 31 , and the plurality of branch outlets 314 are provided on the same side of the device body 31 in the length direction.

[0093] refer to Figure 3 The length direction of the device body 31 may be the first direction X. It can be understood that the plurality of branch outlets 314 are disposed at the same end of the device body 31 in the second direction Y.

[0094] In the above technical solution, the extension channel 315 extends along the length direction of the device body 31, so that the extension channel 315 is a straight channel, which is conducive to reducing the flow resistance in the extension channel 315 and reducing the flow rate loss of the refrigerant. The multiple branch outlets 314 are arranged on the same side of the device body 31, which is conducive to the multiple thermal management components 2 being arranged on the same side of the device body 31, so that the position layout of the multiple thermal management components 2 is relatively compact, and the size of the thermal management component 30 in the second direction Y can be reduced, thereby further reducing the space occupied by the thermal management component 30.

[0095] In some embodiments of the present application, Figure 3 As shown, at least part of the plurality of branch inlets 313 and the branch outlet 314 are disposed on the same side of the device body 31 .

[0096] Some of the plurality of branch inlets 313 are disposed on the same side of the device body 31 as the branch outlet 314, and the rest are disposed on a different side of the device body 31 from the branch outlet 314. Figure 3 There are two branch inlets 313 and two branch outlets 314, one of the two branch inlets 313 is arranged at one end of the first direction X of the device body 31, and the other is close to the other end of the first direction X of the device body 31, and is arranged at the same end of the second direction Y of the device body 31 with the two branch outlets 314.

[0097] Alternatively, a plurality of branch inlets 313 and branch outlets 314 may be provided on the same side of the device body 31 .

[0098] Exemplarily, the temperature-controlled object is a battery 100, and the current collecting component 3 of the above-mentioned structure is adopted. In the thermal management component 2 connected to the branch inlet 313 and the branch outlet 314 on the same side, the distance between the two ends of the thermal management component 2 can be relatively small, and will not occupy the space at both ends of the first direction X of the device body 31. Therefore, in the battery 100, there is relatively ample space at both ends of the first direction X of the device body 31 for arranging other components of the battery 100, which is conducive to the flexible arrangement of the components in the battery 100, and can also reduce the pipeline length of the thermal management component 2.

[0099] In the above technical solution, the distance between the two ends of the pipeline of the thermal management component 2 connected to the branch inlet 313 and the branch outlet 314 on the same side among the multiple thermal management components 2 can be relatively close, which is beneficial to reducing the length of the thermal management component 2, saving the material of the thermal management component 2, and reducing the cost. At the same time, it also enables the end space in the first direction X of the device body 31 to not be connected to the thermal management component 2, and there is relatively ample space for arranging other components.

[0100] In some embodiments of the present application, Figure 3 As shown, some of the plurality of branch inlets 313 and the corresponding branch outlets 314 are disposed on two adjacent sides of the device body 31 .

[0101] It can be understood that some of the plurality of branch inlets 313 and the corresponding branch outlets 314 are arranged on two adjacent sides of the device body 31, and the remaining and the corresponding branch outlets 314 are arranged on the same side of the device body 31. Figure 3 There are two branch inlets 313 and two branch outlets 314 , one of the two branch inlets 313 and the corresponding branch outlet 314 are arranged on the adjacent two sides of the device body 31 , and the other branch inlet 313 and the corresponding branch outlet 314 are arranged on the same side of the device body 31 .

[0102] In the above technical scheme, some of the multiple sub-inlets 313 and the corresponding sub-outlets 314 are arranged on adjacent two sides of the device body 31, and the rest are arranged on the same side of the device body 31 as the corresponding sub-outlets 314. With this scheme, on the one hand, the sub-inlets 313 and the corresponding sub-outlets 314 are arranged on the same side, so that the two ends of the corresponding thermal management component 2 can be close to each other, which is beneficial to reducing the length of the thermal management component 2 and saving the material of the thermal management component 2. At the same time, it also makes the end space of the device body 31 in the first direction X not need to be connected to the thermal management component 2, which is beneficial to avoid other components of the battery 100 and facilitate the installation of other components. On the other hand, the sub-inlet 313 and the corresponding sub-outlet 314 are arranged on adjacent two sides, and the device body 31 can discharge refrigerant at the end of the first direction X, which is beneficial to reducing the size of the device body 31 in the first direction X, and can reduce the material of the device body 31 and reduce the cost.

[0103] In some embodiments of the present application, such as 3 and Figure 5 As shown, the device body 31 has a height direction, a first communication channel 316 is formed between the branch outlet 314 and the main outlet 312, and the first communication channel 316 and the extension channel 315 are spaced apart in the height direction.

[0104] refer to Figure 3 , the height direction of the device body 31 may refer to the third direction Z. The first communication channel 316 and the extension channel 315 are spaced apart in the height direction, and it can be understood that the first communication channel 316 may be located on the upper side of the extension channel 315 in the height direction; or, the first communication channel 316 is located on the lower side of the extension channel 315 in the height direction. The first communication channel 316 may be, but is not limited to, a straight channel, an arc channel, and a curved channel.

[0105] In the above technical scheme, it can be understood that the first connecting flow channel 316 and the extension flow channel 315 are arranged in layers in the height direction of the device body 31. The adoption of this scheme can reduce the probability of interference between the first connecting flow channel 316 and the extension flow channel 315, which is beneficial to improving the manufacturability of the device body 31. At the same time, it can also reduce the size of the device body 31 in the second direction Y, thereby reducing the volume of the device body 31 and reducing the space occupied by the current collecting component 3, which is beneficial to having more space in the battery 100 to arrange other components, or to increase the energy density of the battery 100.

[0106] In some embodiments of the present application, a reference plane perpendicular to the height direction is made, and on the reference plane, the orthographic projection of the extension flow channel 315 and the orthographic projection of the first connecting flow channel 316 at least partially overlap.

[0107] refer to Figure 3, the height direction of the device body 31 may refer to the third direction Z, and correspondingly, the reference plane may be a horizontal plane. On the reference plane, the orthographic projection of the extension channel 315 at least partially overlaps with the orthographic projection of the first connecting channel 316, which can be understood as, in the second direction Y, the orthographic projection of the extension channel 315 and the orthographic projection of the first connecting channel 316 may partially overlap, and the other parts are staggered, that is, the orthographic projection of the extension channel 315 and the orthographic projection of the first connecting channel 316 overlap slightly, or the orthographic projection of the extension channel 315 is located below or above the orthographic projection of the first connecting channel 316, that is, the orthographic projection of the extension channel 315 and the orthographic projection of the first connecting channel 316 overlap for the most part.

[0108] In the above technical solution, by at least partially overlapping the orthographic projection of the extended flow channel 315 with the orthographic projection of the first connecting flow channel 316 on the reference plane, the size of the device body 31 in the second direction X can be further reduced, thereby reducing the space occupied by the current collecting component 3, which is beneficial for having more space in the battery 100 to arrange other components, thereby further improving the energy density of the battery 100.

[0109] In some embodiments of the present application, Figure 3 and Figure 5 As shown, a second communication channel 317 is formed between one of the plurality of branch inlets 313 that is in communication with the main inlet 311 and the main inlet 311 , and the second communication channel 317 and the extension channel 315 are located on both sides of the main inlet 311 .

[0110] The second communication channel 317 and the extension channel 315 may be located on both sides of the main inlet 311 in the first direction X (see Figure 3 and Figure 5 Alternatively, the second communication channel 317 and the extension channel 315 may also be located on both sides of the main inlet 311 in the second direction Y. The second communication channel 317 may be, but is not limited to, a linear channel, an arc channel, and a curved channel.

[0111] When the refrigerant enters the device body 31 from the main inlet 311, a part of the refrigerant flows to the inlet of the second connecting flow channel 317 on one side. At this time, the flow velocity of this part of the refrigerant entering the inlet of the second connecting flow channel 317 will not change significantly compared with the initial flow velocity (the initial flow velocity entering the main inlet 311), and the other part of the refrigerant flows to the inlet of the extension flow channel 315 on the other side. Since the extension flow channel 315 and the second connecting flow channel 317 are on different sides, the distance between the refrigerant flowing to the inlet of the extension flow channel 315 and the refrigerant flowing to the inlet of the second connecting flow channel 317 is relatively far, so the flow velocity of the refrigerant flowing to the inlet of the extension flow channel 315 will not be significantly attenuated, and the mutual influence between the refrigerant flowing to the second connecting flow channel 317 and the refrigerant flowing to the extension flow channel 315 is relatively small, which is conducive to the balanced distribution of the refrigerant to the second connecting flow channel 317 and the extension flow channel 315.

[0112] In the above technical solution, by arranging the second connecting flow channel 317 and the extension flow channel 315 on both sides of the main inlet 311, the influence between the refrigerant flowing to the inlet of the second connecting flow channel 317 and the inlet refrigerant flowing to the extension flow channel 315 can be reduced, so that the refrigerant entering the main inlet 311 can be distributed to the second connecting flow channel 317 and the extension flow channel 315 more evenly, thereby reducing the probability of large differences in refrigerant flow rates of multiple sub-inlets 313 due to uneven refrigerant distribution, thereby reducing the probability of large temperature differences in the battery 100 due to different refrigerant flow rates in multiple thermal management components 2, which is beneficial to improving the temperature control effect of the battery 100 and improving the reliability of the battery 100.

[0113] In some embodiments of the present application, Figures 6 to 10 As shown, the device body 31 has a width direction, a first communication channel 316 is formed between the branch outlet 314 and the main outlet 312, and the first communication channel 316 and the extension channel 315 are arranged spaced apart along the width direction.

[0114] refer to Figure 7 , Figure 8 and Fig. 9 , the width direction of the device body 31 may be the second direction Y. In the above technical solution, the first connecting flow channel 316 and the extension flow channel 315 are arranged spaced apart in the width direction, so that the height dimension of the device body 31 can be reduced, that is, the height dimension of the current collecting component 3 can be reduced, thereby facilitating the reduction of the space occupied by the current collecting component 3 in the height direction of the battery 100. The adoption of this solution can provide sufficient space in the height direction of the battery 100 to arrange more components or components of larger volume. The adoption of this solution can also reduce the height dimension of the battery 100, thereby reducing the volume of the battery 100, which is conducive to improving the energy density of the battery 100.

[0115] In some embodiments of the present application, Figures 7 to 9 As shown, a second communication channel 317 is formed between one of the plurality of branch inlets 313 connected to the main inlet 311 and the main inlet 311 . The second communication channel 317 is disposed on a side of the main inlet 311 away from the main outlet 312 and is connected to the extension channel 315 .

[0116] refer to Fig. 9The main outlet 312 and the second connecting channel 317 can be understood as being located at both ends of the first direction X of the main inlet 311. After the second connecting channel 317 is connected to the main inlet 311, it can extend along the second direction Y and connect to the extension channel 315. When the device body 31 is manufactured using this scheme, the extension channel 315 does not need to be directly connected to the main inlet 311, but instead connects to the second connecting channel 317 to divert the refrigerant to the remaining diversion inlets 313. The structure of the extension channel 315 is relatively simple and easy to form, which can reduce the difficulty of manufacturing the device body 31.

[0117] In the above technical scheme, the refrigerant of the main inlet 311 first flows to the second connecting flow channel 317, a part of the refrigerant in the second connecting flow channel 317 flows to the branch inlet 313, and the other part flows to the extension flow channel 315. With this scheme, the second connecting flow channel 317 connects the extension flow channel 315 and the branch inlet 313, and the structure of the device main body 31 is relatively simple, which can improve the manufacturability of the device main body 31 and reduce the cost.

[0118] In some embodiments of the present application, Figures 7 to 9 As shown, the device body 31 has a height direction, and a second connecting flow channel 317 is formed between one of the multiple sub-inlets 313 connected to the main inlet 311 and the main inlet 311. The main inlet 311 is connected to the second connecting flow channel 317 along the height direction, and a reference plane perpendicular to the height direction is used as a reference plane. On the reference plane, the orthographic projection of the main inlet 311 and the orthographic projection of the second connecting flow channel 317 at least partially overlap.

[0119] refer to Figures 7 to 9 , the height direction of the device body 31 may refer to the third direction Z. The reference plane may refer to a horizontal plane perpendicular to the third direction Z. On the reference plane, the orthographic projection of the main inlet 311 and the orthographic projection of the second connecting flow channel 317 at least partially overlap, which can be understood as that the orthographic projection of the main inlet 311 and the orthographic projection of the second connecting flow channel 317 partially overlap, and the other parts are staggered; or, one of the orthographic projections of the main inlet 311 and the orthographic projection of the second connecting flow channel 317 is located directly below the other, and the orthographic projections of the two overlap more.

[0120] In the above technical solution, by at least partially overlapping the orthographic projection of the main inlet 311 and the orthographic projection of the second connecting flow channel 317 on the reference plane, the position distribution between the main inlet 311 and the second connecting flow channel 317 can be made more compact, thereby reducing the size of the device body 31 in the first direction X, thereby reducing the space occupied by the current collecting component 3 in the battery 100, which is beneficial for the battery 100 to have more space in the first direction X to arrange components, thereby reducing the volume of the battery 100 and improving the energy density of the battery 100.

[0121] In some embodiments of the present application, Fig.10As shown, one of the multiple sub-inlets 313 is connected to the main inlet 311, and a second connecting flow channel 317 is formed between the main inlet 311, the second connecting flow channel 317 and the extension flow channel 315 are located on both sides of the main inlet 311, a first connecting hole 318 is formed between the extension flow channel 315 and the main inlet 311, a second connecting hole 319 is formed between the second connecting flow channel 317 and the main inlet 311, the orifice area of ​​the first connecting hole 318 is S1, and the orifice area of ​​the second connecting hole 319 is S2, wherein 0.5≤S1 / S2≤1.5.

[0122] Since the extension channel 315 connects the main inlet 311 and the remaining branch inlets 313, and the second connecting channel 317 connects the main inlet 311 and one branch inlet 313, the length of the extension channel 315 is greater than that of the second connecting channel 317. Generally speaking, the speed of the refrigerant in the collecting component 3 is within an appropriate range, and the pressure drop between the first connecting hole 318 and the second connecting hole 319 mainly depends on the orifice area S1 of the first connecting hole 318 and the orifice area S2 of the second connecting hole 319. Therefore, in order to ensure that the pressure drop difference between the first connecting hole 318 and the second connecting hole 319 is small, the orifice area S1 of the first connecting hole 318 and the orifice area S2 of the second connecting hole 319 should be within an appropriate range. Among them, S1 / S2 can be 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, etc.

[0123] It can be understood that if S1 / S2 is less than 0.5, the pressure difference between the first connecting hole 318 and the second connecting hole 319 is large, the pressure drop of the first connecting hole 318 is small, the flow rate is small, and the corresponding refrigerant flow rate of the sub-inlet 313 is small, while the pressure drop of the second connecting hole 319 is large, the flow rate is large, and the corresponding refrigerant flow rate of the sub-inlet 313 is large, which will lead to uneven distribution of refrigerant flow in multiple thermal management components 2, resulting in a large temperature difference in the battery 100. If S1 / S2 is greater than 1.5, the pressure difference between the first connecting hole 318 and the second connecting hole 319 is large, the pressure drop of the first connecting hole 318 is large, the flow rate is large, and the corresponding refrigerant flow rate of the sub-inlet 313 is large, while the pressure drop of the second connecting hole 319 is small, the flow rate is small, and the corresponding refrigerant flow rate of the sub-inlet 313 is small, resulting in uneven distribution of refrigerant flow in multiple thermal management components 2, which will also cause a large temperature difference in the battery 100.

[0124] In the above technical solution, by setting the ratio of the orifice area S1 of the first connecting hole 318 to the orifice area S2 of the second connecting hole 319 within the range of 0.5 to 1.5, the pressure drop difference at the first connecting hole 318 and the second connecting hole 319 can be within an appropriate range, reducing the probability of a large pressure drop difference between the first connecting hole 318 and the second connecting hole 319, thereby regulating the flow of the refrigerant, which is conducive to uniform distribution of the refrigerant to multiple sub-inlets 313. Moreover, the adoption of this solution can make the refrigerant evenly distributed between the first connecting hole 318 and the second connecting hole 319, while reducing the manufacturing requirements for the device body 31, which is conducive to reducing costs.

[0125] In some embodiments of the present application, Fig.10 As shown, the device body 31 has a length direction, the extension channel 315 extends along the length direction, and the length in the length direction is L1, the second connecting channel 317 extends along the width direction, and the length in the width direction is L2, wherein 0.2≤(S1 / L1) / (S2 / L2)≤5.

[0126] refer to Fig.10 , the length direction may refer to the first direction X, and the width direction may refer to the second direction Y.

[0127] With reference to the foregoing, the pressure drop between the first connecting hole 318 and the second connecting hole 319 mainly depends on the orifice area S1 of the first connecting hole 318 and the orifice area S2 of the second connecting hole 319, and is also related to the length L1 of the extension channel 315 and the length L2 of the second connecting channel 317. By setting the ratio of (S1 / L1) / (S2 / L2) within an appropriate range, the distribution of the refrigerant flow can be more accurately adjusted, so that the distribution of the refrigerant between the multiple sub-inlets 313 is more uniform.

[0128] Among them, (S1 / L1) / (S2 / L2) can be 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0 and so on.

[0129] It can be understood that (S1 / L1) / (S2 / L2) is less than 0.2, the pressure difference between the first connecting hole 318 and the second connecting hole 319 is relatively large, the pressure drop of the first connecting hole 318 is relatively small, the flow rate is also relatively small, and the corresponding refrigerant flow rate of the branch inlet 313 is also relatively small, while the pressure drop of the second connecting hole 319 is relatively large, the flow rate is also relatively large, and the corresponding refrigerant flow rate of the branch inlet 313 is also relatively large, which will cause uneven distribution of refrigerant flow in multiple thermal management components 2, resulting in a large temperature difference in the battery 100.

[0130] If S1 / S2 is greater than 5.0, the pressure difference between the first connecting hole 318 and the second connecting hole 319 is relatively large, the pressure drop of the first connecting hole 318 is relatively large, the flow rate is also relatively large, and the corresponding refrigerant flow rate of the branch inlet 313 is also relatively large, while the pressure drop of the second connecting hole 319 is relatively small, the flow rate is also relatively small, and the corresponding refrigerant flow rate of the branch inlet 313 is also relatively small, resulting in uneven distribution of refrigerant flow in multiple thermal management components 2, which will also cause a large temperature difference in the battery 100.

[0131] In the above technical solution, by setting the ratio of (S1 / L1) / (S2 / L2) in the range of 0.2 to 5, the pressure drop difference between the first connecting hole 318 and the second connecting hole 319 can be made smaller, further reducing the probability of a large pressure drop difference between the first connecting hole 318 and the second connecting hole 319, thereby playing a role in accurately adjusting the refrigerant flow rate, which is conducive to more even distribution of the refrigerant to multiple sub-inlets 313.

[0132] In some embodiments of the present application, 0.8≤(S1 / L1) / (S2 / L2)≤1.2.

[0133] That is, (S1 / L1) / (S2 / L2) can be 0.8, 0.82, 0.84, 0.86, 0.88, 0.90, 0.92, 0.94, 0.96, 0.98, 1.0, 1.02, 1.04, 1.06, 1.08, 1.10, 1.12, 1.14, 1.16, 1.18, 1.20, etc.

[0134] In the above technical solution, by setting (S1 / L1) / (S2 / L2) in the range of 0.8 to 1.2, the pressure drop difference at the first connecting hole 318 and the second connecting hole 319 is smaller, and the probability of a large pressure drop difference between the first connecting hole 318 and the second connecting hole 319 is also smaller, which can more accurately adjust the refrigerant flow rate, and is conducive to more evenly distributing the refrigerant to multiple sub-inlets 313, so that the refrigerant flow difference in multiple thermal management components 2 is smaller, which is conducive to reducing the probability of a large temperature difference in the battery 100, and can further improve the reliability of the battery 100.

[0135] In some embodiments of the present application, Fig.10 As shown, a first wall 320 is formed between the main outlet 312 and the extension channel 315 , and a dimension of the first wall 320 in the width direction is 0.5 mm to 2 mm.

[0136] refer to Fig.10The dimension of the first wall 320 in the width direction can be L3, that is, L3 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm and so on.

[0137] It can be understood that if the dimension L3 of the first wall 320 in the width direction is less than 0.5 mm, the wall thickness of the first wall 320 is relatively small, which will lead to poor strength of the first wall 320 and a high probability of penetration, which will seriously affect the service life and reliability of the device body 31. If the dimension L3 of the first wall 320 in the width direction is greater than 2 mm, the wall thickness of the first wall 320 is relatively large, which will lead to excessive strength of the first wall 320, and the dimension of the device body 31 in the width direction is relatively large, which is not conducive to reducing the volume.

[0138] In the above technical solution, by setting the dimension of the first wall 320 in the width direction to be in the range of 0.5mm to 2mm, on the one hand, the first wall 320 can have a more suitable wall thickness, relatively high strength, and not easy to be damaged. On the other hand, the wall thickness of the first wall 320 will not be too large, and the position between the extended flow channel 315 and the main outlet 312 is more compact, which is beneficial to reducing the dimension of the device body 31 in the width direction, and is beneficial to reducing the volume of the device body 31, thereby reducing the space occupied by the device body 31, which is beneficial to the arrangement of components in the battery 100, and is beneficial to reducing the volume of the battery 100 and improving the energy density of the battery 100.

[0139] In some embodiments of the present application, Fig.10 As shown, there are two branch inlets 313 and two branch outlets 314, and the two branch outlets 314 include a first branch outlet 3141 and a second branch outlet 3142 arranged along the length direction of the device body 31, a first flow channel 321 is formed between the first branch outlet 3141 and the main outlet 312, a second flow channel 322 is formed between the second branch outlet 3142 and the main outlet 312, a second wall 323 is formed between the first flow channel 321 and the second flow channel 322, and the thickness of the second wall 323 in the length direction of the device body 31 is 0.5 mm to 2 mm.

[0140] refer to Fig.10 The thickness of the second wall 323 is L4, that is, L4 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm and so on.

[0141] It can be understood that if the thickness of the second wall 323 is less than 0.5 mm in the length direction of the device body 31, on the one hand, the thickness of the second wall 323 is relatively small and the strength is relatively low, and the probability of penetration between the first flow channel 321 and the second flow channel 322 is relatively high, which will seriously affect the reliability of the device body 31. On the other hand, the distance between the first flow channel 321 and the second flow channel 322 is relatively close, which can easily cause installation interference between the two thermal management components 2.

[0142] In the above technical solution, by setting the thickness of the second wall 323 in the range of 0.5mm to 2mm in the length direction of the device body 31, the distance between the first flow channel 321 and the second flow channel 322 can be relatively close, and the connecting area between the first flow channel 321 and the second flow channel 322 and the main outlet 312 is relatively large, that is, the connecting opening between the first flow channel 321 and the second flow channel 322 and the main outlet 312 is relatively large, so that the refrigerant can be evenly distributed in the first flow channel 321 and the second flow channel 322, so that the refrigerant flow rate in multiple thermal management components 2 is less different.

[0143] In some embodiments of the present application, Figure 3 , Figure 6 and Figure 7 As shown, the flow collecting component 3 further includes a first connecting pipe 32 and a second connecting pipe 33 . The first connecting pipe 32 is connected to the main inlet 311 , and the second connecting pipe 33 is connected to the main outlet 312 .

[0144] The first connecting pipe 32 can play a role in connecting with the refrigerant input component. For example, the refrigerant input component can be a refrigerant input pipe, and the refrigerant input pipe is installed in the first connecting pipe 32.

[0145] The second connecting pipe 33 can play a role in connecting with the refrigerant output component. For example, the refrigerant output component can be a refrigerant output pipe, and the refrigerant output pipe is installed in the second connecting pipe 33.

[0146] Optionally, the shape of the first connecting pipe 32 is the same as the shape of the main inlet 311, and the shape of the second connecting pipe 33 is the same as the shape of the main outlet 312. The first connecting pipe 32 and the second connecting pipe 33 can be, but are not limited to, rectangular pipes and circular pipes.

[0147] In the above technical solution, the first connecting tube 32 is provided to connect the main inlet 311, so as to facilitate the connection between the collecting component 3 and the refrigerant input component. The second connecting tube 33 is provided to connect the main outlet 312, so as to facilitate the connection between the collecting component 3 and the refrigerant output component, which is beneficial to the installation of the collecting component 3 and the external components.

[0148] In some embodiments of the present application, a first annular groove 32a may be provided on the outer periphery of the first connecting tube 32, and the refrigerant input tube may be a hose which is covered on the first connecting tube 32 and fastened in the first annular groove 32a by a binding belt.

[0149] In some embodiments of the present application, Figure 3 As shown, the outer circumference of the second connecting pipe 33 may be provided with a second annular groove 33a, and the refrigerant output pipe may be a hose, which is covered on the second connecting pipe 33 and fastened in the second annular groove 33a by a binding belt. Optionally, the binding belt may be, but is not limited to, a cable tie, a steel wire rope, etc.

[0150] In some embodiments of the present application, both the branch inlet 313 and the branch outlet 314 are provided with a limiting structure or a guiding structure. In this technical solution, the limiting structure or the guiding structure can be used to connect the tubular joint of the thermal management component 2 to facilitate installation and welding.

[0151] Exemplarily, the guide structure may be a guide slope, and the heat management component 2 may be a flat-mouthed tube, the tube mouth of which may be easily installed into the branch inlet 313 or the branch outlet 314 along the guide slope.

[0152] According to the embodiment provided in the present application, the collecting component 3 includes a device body 31, the device body 31 is provided with a main inlet 311, a main outlet 312, two branch inlets 313, and two branch outlets 314, and an extension flow channel 315, a first connecting flow channel 316 and a second connecting flow channel 317 are provided inside the device body 31, the first connecting flow channel 316 extends along the width direction of the device body 31, and each branch outlet 314 is connected to the main outlet 312 through the first connecting flow channel 316, the second connecting flow channel 317 extends along the width direction of the device body 31 and is connected to the main inlet 311, and is connected to one branch outlet 314, the extension flow channel 315 extends along the length direction of the device body 31, and one end is connected to the main inlet 311, and the other end is connected to another branch inlet 313.

[0153] The first communication channel 316 and the extension channel 315 are arranged in layers in the height direction of the device body 31 , and the second communication channel 317 and the first communication channel 316 are arranged in the same layer.

[0154] According to another embodiment provided by the present application, the structure of the current collecting component 3 is substantially the same as the structure of the current collecting component 3 in the previous embodiment, except that the first connecting flow channel 316 and the extension flow channel 315 are arranged at intervals in the width direction of the device body 31, and the first connecting flow channel 316, the second connecting flow channel 317 and the extension flow channel 315 are located at the same height.

[0155] Second, as Fig.11 and Fig.12As shown, the embodiment of the present application also provides a thermal management component 30, including: a thermal management component 2 and a collecting component 3, there are at least two thermal management components 2, the thermal management component 2 has a refrigerant inlet 21 and a refrigerant outlet 22 connected to the internal flow path; the branch inlet 313 and the corresponding branch outlet 314 form a group of matching structures, the number of matching structures and thermal management components 2 is equal and one-to-one corresponding, wherein in each group of matching structures, the branch inlet 313 is connected to the refrigerant inlet 21, and the branch outlet 314 is connected to the refrigerant outlet 22.

[0156] The thermal management component 2 may refer to a pipe component connected to the current collecting component 3 to form a refrigerant circuit, wherein the pipe component may be, but is not limited to, a flat pipe, a round pipe, etc. Specifically, the refrigerant inlet 21 is connected to the corresponding branch inlet 313 , and the refrigerant outlet 22 is connected to the corresponding branch outlet 314 .

[0157] refer to Fig.11 and Fig.12 There are two thermal management components 2 , and the current collecting component 3 has two branch inlets 313 and two branch outlets 314 , and forms two sets of matching structures, and the two sets of matching structures correspond to the two thermal management components 2 .

[0158] In the above technical solution, by adopting the current collecting component 3, multiple thermal management components 2 can be connected, and multiple thermal management components 2 can be arranged side by side when connected with the current collecting component 3, and the installation interference between the multiple thermal management components 2 can be reduced, and the bending avoidance positions on the thermal management components 2 can be reduced, which is beneficial to reducing the process manufacturing difficulty of the thermal management components 2 and reducing the space occupied by the thermal management components 2.

[0159] Thirdly, Figure 2 As shown, the embodiment of the present application further provides a battery 100 including a thermal management component 30 .

[0160] In the above technical solution, by adopting the thermal management component 30, the probability of a large temperature difference on the battery 100 can be reduced, thereby improving the reliability of the battery 100. At the same time, the use of the thermal management component 30 can also save space in the battery 100, which is beneficial to the arrangement of components in the battery 100 or the placement of larger components, and is also beneficial to reducing the volume of the battery 100, thereby improving the energy density of the battery 100.

[0161] In a fourth aspect, an embodiment of the present application further provides an electrical device, including a thermal management component 30 , or a battery 100 .

[0162] The electrical device may be, but is not limited to, a vehicle 1000, a ship, or an aircraft, etc. For example, Figure 1 As shown, the electrical device may be a vehicle 1000 .

[0163] In the above technical solution, by adopting the thermal management component 30 or the battery 100, the reliability of the battery 100 used in the electrical device can be made higher, thereby improving the reliability of the electrical device, and also helping to improve the safety of the electrical device.

[0164] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0165] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A current collecting component, characterized in that: include: A device body is provided with a main inlet, a main outlet, a plurality of branch inlets, and a plurality of branch outlets, wherein the plurality of branch outlets are connected to the main outlet, an extension flow channel is formed inside the device body, one end of the extension flow channel is connected to the main inlet, and the other end extends to a side away from the main inlet, one of the plurality of branch inlets is connected to the main inlet, and the rest are connected to the extension flow channel, the number of the branch inlets and the branch outlets is equal and corresponds one to one, and the branch inlets and the corresponding branch outlets are adjacent.

2. The current collecting component according to claim 1, characterized in that: The extended flow channel extends along the length direction of the device body, and the plurality of branch outlets are arranged on the same side of the device body in the length direction.

3. The current collecting component according to claim 2, characterized in that: At least part of the plurality of branch inlets and the branch outlet are arranged on the same side of the device body.

4. The current collecting component according to claim 3, characterized in that: Some of the plurality of branch inlets and the corresponding branch outlets are arranged on adjacent two sides of the device body.

5. The current collecting component according to any one of claims 1 to 4, characterized in that: The device body has a height direction, a first communication flow channel is formed between the branch outlet and the main outlet, and the first communication flow channel and the extension flow channel are spaced apart in the height direction.

6. The current collecting component according to claim 5, characterized in that: A reference plane perpendicular to the height direction is made, on which the orthographic projection of the extension flow channel at least partially overlaps with the orthographic projection of the first connecting flow channel.

7. The current collecting component according to claim 5 or 6, characterized in that: A second communication flow channel is formed between one of the plurality of branch inlets that is communicated with the main inlet and the main inlet, and the second communication flow channel and the extension flow channel are located on both sides of the main inlet.

8. The current collecting component according to any one of claims 1 to 4, characterized in that: The device body has a width direction, a first communication channel is formed between the branch outlet and the main outlet, and the first communication channel and the extension channel are spaced apart from each other along the width direction.

9. The current collecting component according to claim 8, characterized in that: A second communication channel is formed between one of the plurality of branch inlets that is in communication with the main inlet and the main inlet. The second communication channel is disposed on a side of the main inlet away from the main outlet and is in communication with the extension channel.

10. The current collecting component according to claim 8, characterized in that: The device body has a height direction, and a second connecting flow channel is formed between one of the multiple sub-inlets connected to the main inlet and the main inlet. The main inlet is connected to the second connecting flow channel along the height direction, and a reference plane perpendicular to the height direction is made. On the reference plane, the orthographic projection of the main inlet and the orthographic projection of the second connecting flow channel at least partially overlap.

11. The current collecting component according to claim 8, characterized in that: One of the multiple sub-inlets is connected to the main inlet, and a second connecting flow channel is formed between the second connecting flow channel and the main inlet, the second connecting flow channel and the extension flow channel are located on both sides of the main inlet, a first connecting hole is formed between the extension flow channel and the main inlet, a second connecting hole is formed between the second connecting flow channel and the main inlet, the orifice area of ​​the first connecting hole is S1, and the orifice area of ​​the second connecting hole is S2, wherein 0.5≤S1 / S2≤1.

5.

12. The current collecting component according to claim 11, characterized in that: The device body has a length direction, the extension channel extends along the length direction, and the length in the length direction is L1, the second connecting channel extends along the width direction, and the length in the width direction is L2, wherein 0.2≤(S1 / L1) / (S2 / L2)≤5.

13. The current collecting component according to claim 12, characterized in that: 0.8≤(S1 / L1) / (S2 / L2)≤1.

2.

14. The current collecting component according to any one of claims 8 to 13, characterized in that: A first wall is formed between the main outlet and the extension channel, and a dimension of the first wall in the width direction is 0.5 mm to 2 mm.

15. The current collecting component according to any one of claims 1 to 14, characterized in that: There are two branch inlets and two branch outlets, and the two branch outlets include a first branch outlet and a second branch outlet arranged along the length direction of the device body, a first flow channel is formed between the first branch outlet and the main outlet, a second flow channel is formed between the second branch outlet and the main outlet, a second wall is formed between the first flow channel and the second flow channel, and the thickness of the second wall in the length direction of the device body is 0.5mm to 2mm.

16. The current collecting component according to any one of claims 1 to 15, characterized in that: The flow collecting component further includes a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is connected to the main inlet and the second connecting pipe is connected to the main outlet.

17. A thermal management component, characterized in that: include: at least two thermal management components, each having a refrigerant inlet and a refrigerant outlet communicating with an internal flow path; According to any one of claims 1 to 16, the branch inlets and the corresponding branch outlets form a group of matching structures, the number of the matching structures and the thermal management components are equal and one-to-one corresponding, wherein the branch inlets in each group of the matching structures are connected to the refrigerant inlet, and the branch outlets are connected to the refrigerant outlet.

18. A battery, characterized in that: Comprising the thermal management assembly of claim 17.

19. An electrical device, characterized in that: Comprising the thermal management assembly of claim 17, or the battery of claim 18.

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