Thermal management component, thermal management system, battery and electric device

Abstract

The utility model discloses a thermal management component, a thermal management system, a battery and an electric device. The heat management component comprises a first heat management part and a second heat management part, the first heat management part is sunken to form an arc-shaped surface used for wrapping at least part of the first battery monomer, and a first flow channel for a heat exchange medium to flow is formed in the first heat management part; wherein the shape of the first battery monomer is a cylinder; the second heat management part is connected with the first heat management part, a second flow channel allowing the heat exchange medium to flow is formed in the second heat management part, and the first flow channel communicates with the second flow channel; the second heat management part is used for exchanging heat for the second battery monomer, and the second battery monomer is cuboid-shaped. The heat management component provided by the embodiment of the utility model can perform heat exchange on the battery monomers in two shapes at the same time, so that the battery monomers in two shapes work at a proper temperature, and the cycle performance of the battery is improved.

Description

Technical Field

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

[0002] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0003] In the development of battery technology, how to improve the cycle performance of batteries is an important research direction in battery technology. Utility Model Content

[0004] The present application provides a thermal management component, a thermal management system, a battery and an electrical device, which can improve the cycle performance of the battery.

[0005] In a first aspect, an embodiment of the present application provides a thermal management component, comprising a first thermal management component and a second thermal management component, wherein the first thermal management component is recessed to form an arcuate surface for wrapping at least a portion of a first battery cell, and a first flow channel for a heat exchange medium to flow is arranged inside the first thermal management component; wherein the first battery cell is shaped as a cylinder; the second thermal management component is connected to the first thermal management component, and a second flow channel for a heat exchange medium to flow is arranged inside the second thermal management component, and the first flow channel and the second flow channel are interconnected; the second thermal management component is used for heat exchange for the second battery cell, and the second battery cell is shaped as a cuboid.

[0006] In the above scheme, the curved surface of the first thermal management component can wrap at least a portion of the first battery cell, and the heat exchange medium can flow in the first flow channel and the second flow channel in sequence, so that the first thermal management component can exchange heat for the first battery cell with a cylindrical shape, and the second thermal management component can exchange heat for the second battery cell with a rectangular shape, that is, the thermal management component of the embodiment of the present application can simultaneously exchange heat for battery cells of two shapes, so that the battery cells of two shapes work at a suitable temperature, thereby improving the cycle performance of the battery.

[0007] In some embodiments, arcuate surfaces are disposed on opposite sides of the first thermal management component along the first direction, and the second thermal management component is connected to one side of the first thermal management component along the second direction; wherein the first direction and the second direction are intersecting.

[0008] In the above solution, the two arc-shaped surfaces of the first heat management component can respectively and simultaneously exchange heat for different first battery cells, thereby saving the internal space of the battery and improving the heat exchange efficiency of the heat management component.

[0009] In some embodiments, the arcuate surfaces on two opposite sides of the first heat management component along the first direction have the same curvature.

[0010] In the above solution, the curvatures of the two curved surfaces are set to be equal, which facilitates manufacturing and reduces costs.

[0011] In some embodiments, the curvature of the curved surface is r, and r satisfies the following condition: 170°≤r≤180°.

[0012] In the above solution, the cylindrical first battery cell can be clamped by the arcuate surfaces of the two first heat management components. Since the curvature r of the arcuate surfaces satisfies: 170°≤r≤180°, the heat exchange area of ​​the first heat management component is increased, and the heat exchange efficiency is improved.

[0013] In some embodiments, r satisfies the following condition: 175°≤r≤180°, which further increases the heat exchange area of ​​the thermal management component, thereby further improving the heat exchange efficiency.

[0014] In some embodiments, the second thermal management component includes a first side extending along a first direction and a second side extending along a second direction, the first direction and the second direction are intersecting; the first side is connected to the second side for contacting different surfaces of the second battery cell.

[0015] In the above solution, heat is exchanged on different surfaces of the second battery cell in the shape of a rectangular parallelepiped through the first side surface and the second side surface respectively, so that the heat exchange efficiency can be further improved.

[0016] In some embodiments, the number of the first side surface and the number of the second side surface are both two, the two first side surfaces are relatively spaced apart along the second direction, the two second side surfaces are relatively spaced apart along the first direction, and the first side surface and the second side surface enclose a cavity area for accommodating the second battery cell.

[0017] In the above scheme, the second battery cell can be placed directly in the cavity area of ​​the second thermal management component, the two surfaces of the second battery cell can be in contact with the two first side surfaces respectively, and the other two surfaces can be in contact with the two second side surfaces respectively. The second thermal management component can exchange heat for the four different surfaces of the second battery cell respectively, further improving the heat exchange efficiency, thereby further improving the cycle performance of the second battery cell.

[0018] In some embodiments, the number of the first thermal management component and the number of the second thermal management component are both plural, and the first thermal management components and the second thermal management components are alternately arranged.

[0019] In the above scheme, by alternately arranging the first thermal management components and the second thermal management components, each thermal management component can simultaneously exchange heat for multiple first battery cells and multiple second battery cells, which not only further improves the heat exchange efficiency but also saves the internal space of the battery.

[0020] In some embodiments, the first flow channel includes a plurality of first sub-flow channels, the second flow channel includes a plurality of second sub-flow channels, and the plurality of first sub-flow channels are connected to the plurality of second sub-flow channels in a one-to-one correspondence.

[0021] In the above solution, by increasing the number of first sub-channels of the first thermal management component and the number of second sub-channels of the second thermal management component, the heat exchange areas of the first thermal management component and the second thermal management component can be increased, thereby further improving the heat exchange efficiency of the battery.

[0022] In a second aspect, an embodiment of the present application further provides a thermal management system, comprising a thermal management component according to any of the above embodiments, wherein a plurality of thermal management components are arranged at intervals.

[0023] In a third aspect, an embodiment of the present application further provides a battery, comprising a first battery cell, a second battery cell and a thermal management component of any of the above-mentioned embodiments, wherein the first battery cell is in the shape of a cylinder; the second battery cell is in the shape of a rectangular parallelepiped; the arcuate surface of the first thermal management component wraps at least a portion of the first battery cell to exchange heat for the first battery cell; and the second thermal management component is used to exchange heat for the second battery cell.

[0024] In a fourth aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery, wherein the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0027] Figure 2 An exploded schematic diagram of a battery provided in some embodiments of the present application;

[0028] Figure 3 A top view of a thermal management component provided for some embodiments of the present application;

[0029] Figure 4A schematic diagram of assembling a thermal management component, a first battery cell, and a second battery cell provided in some embodiments of the present application;

[0030] Figure 5 A schematic diagram of the structure of a thermal management component provided in some embodiments of the present application.

[0031] In the drawings, the drawings are not drawn to scale.

[0032] Description of reference numerals:

[0033] 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, upper cover; 20, battery cell; 21, first battery cell; 22, second battery cell; 30, housing; 400, thermal management component; 40, first thermal management component; 41, curved surface; 42, first flow channel; 50, second thermal management component; 51, second flow channel; 52, first side surface; 53, second side surface; 54, cavity area; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The term "plurality" used in the present application refers to two or more (including two).

[0041] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0042] In the present application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, 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.

[0043] 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. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0044] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly 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 current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. 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 current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked 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. 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.

[0045] The battery cells disclosed in the embodiments 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 battery cells and batteries disclosed in the present application can be used to form the electrical device, which is beneficial to improving the stability of battery performance and battery life.

[0046] Batteries will show different electrical cycle performance at different ambient temperatures. When the ambient temperature is too high or too low, the battery cycle performance will decrease, and even shorten its service life. In order to ensure the safety, stable performance and excellent operation of new energy vehicles, effective thermal management of the battery must be carried out to control the battery to always operate within the appropriate temperature range.

[0047] The inventors set a thermal management component in the battery, which can be used to exchange heat with the battery cells of the battery to effectively manage the battery and make the battery cells work within a suitable temperature range. Currently, there is no effective thermal management solution for batteries containing battery cells of different shapes.

[0048] In order to solve the above technical problems, an embodiment of the present application provides a thermal management component, which includes a first thermal management component and a second thermal management component, the first thermal management component is recessed to form an arcuate surface for wrapping at least a portion of the first battery cell, and a first flow channel for heat exchange medium to flow is arranged inside the first thermal management component; wherein the first battery cell is shaped as a cylinder; the second thermal management component is connected to the first thermal management component, and a second flow channel for heat exchange medium to flow is arranged inside the second thermal management component, and the first flow channel and the second flow channel are connected to each other; the second thermal management component is used for heat exchange for the second battery cell, and the second battery cell is shaped as a cuboid.

[0049] In the above scheme, the curved surface of the first thermal management component can wrap at least a portion of the first battery cell, and the heat exchange medium can flow in the first flow channel and the second flow channel in sequence, so that the first thermal management component can exchange heat for the first battery cell with a cylindrical shape, and the second thermal management component can exchange heat for the second battery cell with a rectangular shape, that is, the thermal management component of the embodiment of the present application can simultaneously exchange heat for battery cells of two shapes, so that the battery cells of two shapes work at a suitable temperature, thereby improving the cycle performance of the battery.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Please refer to Figure 2 , Figure 2 An exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a battery box and a battery cell 20. In some embodiments, the battery box may include an upper cover 10 and a box body 30, the upper cover 10 and the box body 30 cover each other, and the upper cover 10 and the box body 30 jointly define a receiving cavity for accommodating the battery cell 20. The box body 30 may be a hollow structure with one end open, and the upper cover 10 may be a plate-like structure, and the upper cover 10 covers the open side of the box body 30, so that the upper cover 10 and the box body 30 jointly define a receiving cavity; the upper cover 10 and the box body 30 may also be hollow structures with one side open, and the open side of the upper cover 10 covers the open side of the box body 30. Of course, the battery box formed by the upper cover 10 and the box body 30 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0055] In the battery 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box; 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 mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box. The battery 100 can also include other structures. For example, the battery 100 can also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0056] Each battery cell 20 may be a secondary battery cell or a primary battery cell, or a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0057] Figure 3 A top view of a thermal management component provided for some embodiments of the present application; Figure 4 A schematic diagram of assembling a thermal management component, a first battery cell, and a second battery cell provided in some embodiments of the present application.

[0058] Please refer to Figure 3 and Figure 4In the first aspect, the embodiment of the present application provides a thermal management component 400, which includes a first thermal management component 40 and a second thermal management component 50. The first thermal management component 40 is recessed to form an arcuate surface 41 for wrapping at least a portion of the first battery cell A. A first flow channel 42 for the flow of a heat exchange medium is arranged inside the first thermal management component 40; wherein the shape of the first battery cell A is a cylinder; the second thermal management component 50 is connected to the first thermal management component 40, and a second flow channel 51 for the flow of a heat exchange medium is arranged inside the second thermal management component 50, and the first flow channel 42 and the second flow channel 51 are connected to each other; the second thermal management component 50 is used for heat exchange for the second battery cell B, and the shape of the second battery cell B is a rectangular parallelepiped.

[0059] The thermal management component 400 may be an integrally formed part, with a hollow structure inside, forming a first flow channel 42 and a second flow channel 51, and there is no need to assemble the first thermal management component 40 and the second thermal management component 50, which can improve production efficiency. Of course, the first thermal management component 40 and the second thermal management component 50 may also be independent components, and the thermal management component 400 is formed by connecting the first thermal management component 40 and the second thermal management component 50.

[0060] The first thermal management component 40 is recessed to form an arc surface 41, and the first battery cell A can be placed in the arc region beside the arc surface 41, and the first battery cell A is heat-exchanged by the heat exchange medium in the first flow channel 42. The second thermal management component 50 includes a side surface located beside the second battery cell B, and the second battery cell B is heat-exchanged by the heat exchange medium in the second flow channel 51.

[0061] The heat exchange medium can be liquid such as water and ethylene glycol. The temperature of the heat exchange medium in the first flow channel 42 and the second flow channel 51 can be adjusted. When the temperature of the first battery cell A and the second battery cell B is too high, the thermal management component 400 can cool the first battery cell A and the second battery cell B; when the temperature of the first battery cell A and the second battery cell B is too low, the thermal management component 400 can keep the first battery cell A and the second battery cell B warm, thereby increasing the service life of the battery.

[0062] In the above scheme, the arcuate surface 41 of the first thermal management component 40 can wrap at least a portion of the first battery cell A, and the heat exchange medium can flow in the first flow channel 42 and the second flow channel 51 in sequence, so that the first thermal management component 40 can exchange heat for the cylindrical first battery cell A, and the second thermal management component 50 can exchange heat for the rectangular second battery cell B, that is, the thermal management component 400 of the embodiment of the present application can simultaneously exchange heat for battery cells of two shapes, so that the battery cells of two shapes work at a suitable temperature, thereby improving the cycle performance of the battery.

[0063] In some embodiments, the first thermal management component 40 has arcuate surfaces 41 on opposite sides along the first direction X, and the second thermal management component 50 is connected to one side of the first thermal management component 40 along the second direction Y; wherein the first direction X and the second direction Y are intersecting.

[0064] The first direction X may be the thickness direction of the heat management component 400, and the second direction Y may be the length direction of the heat management component 400. The first heat management component 40 is recessed inward on opposite sides along the first direction X to form two arcuate surfaces 41, and a first battery cell A can be placed in the arcuate area of ​​each arcuate surface 41, so that heat can be exchanged for two first battery cells A at the same time. The two heat management components 400 can also be spaced apart along the first direction X, and the arcuate surfaces 41 of the first heat management components 40 of the two heat management components 400 are close to each other to clamp the first battery cell A.

[0065] In the above solution, the two arc-shaped surfaces 41 of the first heat management component 40 can respectively and simultaneously exchange heat for different first battery cells A, thereby saving the internal space of the battery and improving the heat exchange efficiency of the heat management component 400 .

[0066] In some embodiments, the arcuate surfaces 41 of the first heat management member 40 on two opposite sides along the first direction X have the same curvature.

[0067] Exemplarily, the curvature of the arcuate surfaces 41 of the first thermal management component 40 on opposite sides along the first direction X is 180°. When multiple thermal management components 400 are arranged at intervals along the first direction X, the arcuate surfaces 41 of the first thermal management components 40 of two thermal management components 400 are mutually enclosed to form a 360° cylindrical space. The first battery cell A is located in the cylindrical space and is wrapped by the two arcuate surfaces 41.

[0068] In the above solution, the curvatures of the two arc-shaped surfaces 41 are set to be equal, which facilitates manufacturing and reduces costs.

[0069] In some embodiments, the curvature of the arc surface 41 is r, and r satisfies the following condition: 170°≤r≤180°.

[0070] Wherein, r can be any value in the range of 170°-180°. For example, r can be 170°, 172°, 174°, 175°, 176°, 177°, 178°, 179° or 180°, etc.

[0071] In the above solution, the cylindrical first battery cell A can be clamped by the arcuate surfaces 41 of the two first heat management components 40. Since the curvature r of the arcuate surface 41 satisfies: 170°≤r≤180°, the heat exchange area of ​​the first heat management component 40 is increased, thereby improving the heat exchange efficiency.

[0072] In some embodiments, r satisfies the following condition: 175°≤r≤180°. Wherein, r can be any value in the range of 175°-180°. For example, r can be 175°, 176°, 177°, 178°, 179° or 180°, etc., further increasing the heat exchange area of ​​the thermal management component 400, thereby further improving the heat exchange efficiency.

[0073] Figure 5 A schematic diagram of the structure of a thermal management component provided in some embodiments of the present application.

[0074] like Figure 5 As shown, in some embodiments, the second thermal management component 50 includes a first side surface 52 extending along a first direction X and a second side surface 53 extending along a second direction Y, and the first direction X and the second direction Y are arranged to intersect; the first side surface 52 is connected to the second side surface 53 for contacting different surfaces of the second battery cell B.

[0075] The first direction X may be a length direction of the heat management component 400 , and the second direction Y may be a thickness direction of the heat management component 400 . The first direction X and the second direction Y may be perpendicular to each other.

[0076] The area of ​​the first side surface 52 may be larger than the second side surface 53. The first side surface 52 may be used to contact the surface of the second battery cell B with a larger area, and the second side surface 53 may be used to contact the surface of the second battery cell B with a smaller area. The second thermal management component 50 may be L-shaped, i.e., including a first side surface 52 and a second side surface 53, so that heat can be exchanged between two different surfaces of the second battery cell B. The second thermal management component 50 may also be U-shaped, i.e., including a first side surface 52 and two oppositely disposed second side surfaces 53, or including two oppositely disposed first side surfaces 52 and one second side surface 53, so that heat can be exchanged between three different surfaces of the second battery cell B. The second thermal management component 50 may also be a rectangular parallelepiped with a hollow center, i.e., including two oppositely disposed first side surfaces 52 and two oppositely disposed second side surfaces 53, so that heat can be exchanged between four different surfaces of the second battery cell B.

[0077] In the above solution, heat is exchanged on different surfaces of the second battery cell B in the shape of a rectangular parallelepiped through the first side surface 52 and the second side surface 53 respectively, so that the heat exchange efficiency can be further improved.

[0078] In some embodiments, the number of the first side surface 52 and the number of the second side surface 53 are both two, the two first side surfaces 52 are relatively spaced apart along the second direction Y, the two second side surfaces 53 are relatively spaced apart along the first direction X, and the first side surface 52 and the second side surface 53 are enclosed to form a cavity area 54 for accommodating the second battery cell B.

[0079] The shape and size of the cavity area 54 match those of the second battery cell B and can just accommodate the second battery cell B. When assembling the battery, the second battery cell B is placed in the cavity area 54 of the second thermal management component 50 , and the first side surface 52 and the second side surface 53 position the second battery cell B.

[0080] In the above scheme, the second battery cell B can be placed directly in the cavity area 54 of the second thermal management component 50, the two surfaces of the second battery cell B can be in contact with the two first side surfaces 52 respectively, and the other two surfaces can be in contact with the two second side surfaces 53 respectively. The second thermal management component 50 can exchange heat for the four different surfaces of the second battery cell B respectively, further improving the heat exchange efficiency, thereby further improving the cycle performance of the second battery cell B.

[0081] In some embodiments, the number of the first thermal management component 40 and the number of the second thermal management component 50 are both plural, and the first thermal management components 40 and the second thermal management components 50 are alternately arranged.

[0082] The first thermal management components 40 and the second thermal management components 50 can be arranged alternately in sequence along the first direction X, and the first battery cells A and the second batteries can also be arranged alternately in sequence.

[0083] In the above scheme, by alternately arranging the first thermal management components 40 and the second thermal management components 50, each thermal management component 400 can simultaneously exchange heat for multiple first battery cells A and multiple second battery cells B, which not only further improves the heat exchange efficiency but also saves the internal space of the battery.

[0084] In some embodiments, the first flow channel 42 includes a plurality of first sub-flow channels, the second flow channel 51 includes a plurality of second sub-flow channels, and the plurality of first sub-flow channels are connected to the plurality of second sub-flow channels in a one-to-one correspondence. The plurality of first sub-flow channels may be arranged in sequence along the height direction of the thermal management component 400, and the plurality of second sub-flow channels may be arranged in sequence along the height direction of the thermal management component 400. By increasing the number of first sub-flow channels of the first thermal management component 40 and by increasing the number of second sub-flow channels of the second thermal management component 50, the heat exchange area of ​​the first thermal management component 40 and the second thermal management component 50 can be increased, thereby further improving the heat exchange efficiency of the battery.

[0085] In a second aspect, an embodiment of the present application further provides a thermal management system, comprising a thermal management component 400 according to any one of the above-mentioned embodiments, wherein a plurality of thermal management components 400 are arranged at intervals.

[0086] The plurality of heat management components 400 may be connected via connecting pipes to achieve connection between the heat management components 400 and circulation of heat exchange medium.

[0087] On the third aspect, an embodiment of the present application also provides a battery, comprising a first battery cell A, a second battery cell B and a thermal management component 400 of any of the above-mentioned embodiments, wherein the first battery cell A is in the shape of a cylinder; the second battery cell B is in the shape of a rectangular parallelepiped; the arcuate surface 41 of the first thermal management component wraps at least a portion of the first battery cell A to exchange heat for the first battery cell A; the second thermal management component 50 is used to exchange heat for the second battery cell B.

[0088] In a fourth aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery, wherein the battery is used to provide electrical energy.

[0089] According to some embodiments of the present application, the present application provides a thermal management component 400, which includes a first thermal management component 40 and a second thermal management component 50. The first thermal management component 40 is recessed to form an arcuate surface 41 for wrapping at least part of the first battery cell A, and a first flow channel 42 for heat exchange medium to flow is arranged inside the first thermal management component 40; wherein the shape of the first battery cell A is a cylinder; the second thermal management component 50 is connected to the first thermal management component 40, and a second flow channel 51 for heat exchange medium to flow is arranged inside the second thermal management component 50, and the first flow channel 42 and the second flow channel 51 are interconnected; the second thermal management component 50 is used for heat exchange for the second battery cell B, and the shape of the second battery cell B is a cuboid. The first thermal management component 40 is provided with an arcuate surface 41 on both opposite sides along the first direction X, and the second thermal management component 50 is connected to one side of the first thermal management component 40 along the second direction Y; wherein the first direction X and the second direction Y are arranged to intersect.

[0090] 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.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A thermal management component, characterized in that: include: A first thermal management component is formed with a concave arc surface for wrapping at least a portion of a first battery cell, and a first flow channel for a heat exchange medium to flow is provided inside the first thermal management component; wherein the first battery cell is in the shape of a cylinder; The second thermal management component is connected to the first thermal management component, and a second flow channel for the heat exchange medium to flow is arranged inside the second thermal management component, and the first flow channel and the second flow channel are interconnected; the second thermal management component is used for heat exchange for the second battery cell, and the second battery cell is in the shape of a cuboid.

2. The thermal management component according to claim 1, characterized in that: The first heat management component is provided with arcuate surfaces on two opposite sides along the first direction, and the second heat management component is connected to one side of the first heat management component along the second direction; wherein the first direction and the second direction are arranged to intersect.

3. The thermal management component according to claim 2, characterized in that: The arcuate surfaces of the first heat management component on two opposite sides along the first direction have the same curvature.

4. The thermal management component according to claim 1, characterized in that: The curvature of the arc-shaped surface is r, and r satisfies the following condition: 170°≤r≤180°.

5. The thermal management component according to claim 4, characterized in that: The r satisfies the following condition: 175°≤r≤180°.

6. The thermal management component according to claim 1, characterized in that: The second thermal management component includes a first side surface extending along a first direction and a second side surface extending along a second direction, the first direction and the second direction are arranged to intersect; the first side surface is connected to the second side surface for contacting different surfaces of the second battery cell.

7. The thermal management component according to claim 6, characterized in that: There are two first side surfaces and two second side surfaces, the two first side surfaces are relatively spaced apart along the second direction, the two second side surfaces are relatively spaced apart along the first direction, and the first side surfaces and the second side surfaces enclose a cavity area for accommodating the second battery cell.

8. The thermal management component according to claim 1, characterized in that: The number of the first heat management component and the number of the second heat management component are both plural, and the first heat management component and the second heat management component are alternately arranged.

9. The thermal management component according to claim 1, characterized in that: The first flow channel includes a plurality of first sub-flow channels, the second flow channel includes a plurality of second sub-flow channels, and the plurality of first sub-flow channels are connected to the plurality of second sub-flow channels in a one-to-one correspondence.

10. A thermal management system, characterized in that: The invention comprises a plurality of heat management components according to any one of claims 1 to 9, wherein the plurality of heat management components are arranged at intervals.

11. A battery, characterized in that: include: A first battery cell having a cylindrical shape; The second battery cell is in the shape of a cuboid; According to the thermal management component according to any one of claims 1-9, the arcuate surface of the first thermal management component wraps at least a portion of the first battery cell to exchange heat for the first battery cell; and the second thermal management component is used to exchange heat for the second battery cell.

12. An electrical device, characterized in that: A battery according to claim 11, for providing electrical energy.

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