Cooling structure, battery and electric device

Abstract

The present application relates to a cooling structure, a battery and an electric device. The cooling structure comprises a cooling body and a supporting member. A flow channel is provided in the cooling body. The supporting member is arranged in the flow channel, and comprises at least two connecting sections and several buffer sections, wherein every two adjacent connecting sections are fixedly connected to two inner side surfaces of the cooling body that are opposite each other in the direction of thickness, and the buffer sections connect two adjacent connecting sections and are configured to be capable of generating elastic deformation after being stressed. In the cooling structure of the present application, the supporting member can have the effect of supporting the cooling body in the direction of thickness of the cooling body, and the buffer sections are configured to be capable of generating elastic deformation after being stressed, so that the buffer sections can absorb some stress to generate elastic deformation when the cooling body is pressed, and the stress on a cold plate is dispersed by means of the whole supporting member to avoid stress concentration and reduce the influence of the stress on the cooling structure and a battery cell, such that a battery is not easily damaged and the normal use thereof is ensured.

Description

Cooling structure, battery and electrical device

[0001] Cross-references

[0002] This application claims priority to Chinese patent application CN202222344157.9, entitled “Cooling structure, battery and electrical device,” filed on September 5, 2022, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of secondary batteries, and in particular to a cooling structure, a battery, and an electrical device. Background Art

[0004] In order to meet the growing demand for high-power discharge and fast charging, the energy density of batteries continues to increase, and the heat generated by batteries during use is also increasing. Therefore, a cooling structure needs to be added to the battery to cool the battery.

[0005] In some cases, battery cells in a battery assembly may squeeze each other due to thermal expansion, causing both the battery cells and the cooling structure to be subjected to greater stress, resulting in easy damage to the battery and affecting normal use.

[0006] Summary of the Invention

[0007] Based on this, it is necessary to provide a cooling structure, battery and electrical device to address the problem that both the battery cell and the cooling structure are subjected to large stress, which causes the battery to be easily damaged and affects normal use.

[0008] According to one aspect of the present application, an embodiment of the present application provides a cooling structure, including: a cooling body, a flow channel is provided in the cooling body; and a support member, provided in the flow channel; the support member includes at least two connecting sections and several buffer sections, each two adjacent connecting sections are fixedly connected to the two inner side surfaces opposite to each other along the thickness direction of the cooling body, the buffer section connects the two adjacent connecting sections, and is constructed to be able to generate elastic deformation after being subjected to force.

[0009] The above-mentioned cooling structure is achieved by arranging a support member in the flow channel of the cooling body, and each two adjacent connecting sections of the support member are fixedly connected to the two inner side surfaces opposite to each other in the thickness direction of the cooling body, so as to support the cooling body in the thickness direction. At the same time, the buffer section connects the two adjacent connecting sections and is constructed to be able to produce elastic deformation after being subjected to force. In this way, when the cooling body is under pressure, the buffer section can absorb part of the stress and produce elastic deformation, and disperse the stress on the cold plate through the entire support member, thereby avoiding stress concentration and reducing the influence of stress on the cooling structure and battery cells, making the battery less likely to be damaged and ensuring its normal use.

[0010] In one embodiment, each connecting segment is attached to the inner surface of the cooling body, and at least one connecting segment is provided with a protrusion extending toward the center of the flow channel along the thickness direction of the cooling body. By providing the protrusion on the connecting segment extending toward the center of the flow channel along the thickness direction of the cooling body, when the cooling body is compressed, the protrusion can abut against the inner surface of the cooling body opposite the protrusion, thereby maintaining a certain gap between the two opposing inner surfaces of the cooling body in the thickness direction, thereby ensuring normal use of the flow channel and preventing the flow channel from being crushed.

[0011] In one embodiment, the protrusion includes a top wall and side walls connected to the top wall; the angle between the top wall and the side walls is greater than or equal to 90° and less than 180°. This design allows the shape of the protrusion to be varied, thereby adjusting to different usage requirements and expanding the applicability of the cooling structure of this embodiment.

[0012] In one embodiment, the plane of the top wall is parallel to the inner surface of the cooling body; the spacing between the top wall and the inner surface of the cooling body connected to the top wall via the side wall is greater than or equal to 1 millimeter (mm) and less than or equal to 3 millimeters (mm). By making the surface of the top wall parallel to the inner surface of the cooling body, the contact area between the protrusion and the inner surface of the cooling body can be increased, making the force applied to the protrusion more uniform and the structure more stable. By changing the spacing between the surface of the top wall and the inner surface of the cooling body, the protrusion height of the protrusion is changed, making it easier to adjust the protrusion degree of the protrusion.

[0013] In one embodiment, the protrusion is symmetrically arranged about the center line of the connecting section in which it is located. This design allows the protrusion to be located at the center of the connecting end in which it is located, so that the force distribution between the protrusion and the connecting section is more uniform and the structural stability is higher.

[0014] In one embodiment, the cross-sectional shape of the buffer section is a straight line, a broken line, or an arc. By changing the cross-sectional shape of the buffer section, the force distribution of the buffer section and the direction of its elastic deformation are changed, and the shape can be flexibly selected according to different usage requirements.

[0015] In one embodiment, the connection between the connecting section and the buffer section is smoothly transitioned. The connection between the connecting section and the buffer section is located on the inner surface of the cooling body. By making the connection between the connecting section and the buffer section smoothly transition, the force on the connection can be dispersed, stress concentration can be avoided, and the reliability of the cooling structure can be improved.

[0016] In one embodiment, the cooling structure further includes a driver connected to the buffer segment to drive the buffer segment to elastically deform, or to restore the buffer segment to its pre-elastic deformation state. By providing a driver connected to the buffer segment within the cooling structure, the driver can drive the buffer segment to elastically deform even when the cooling body is not subjected to external pressure. This active deformation of the buffer segment can proactively change the shape of the cooling body, preventing it from being subjected to significant pressure, protecting the cooling body, and providing greater flexibility.

[0017] According to another aspect of the present application, an embodiment of the present application further provides a battery, comprising: a box body; a battery cell, the battery cell being housed in the box body; and a cooling structure as described above, the cooling structure being attached to one or more sides of the battery cell.

[0018] The above-mentioned battery adopts the above-mentioned cooling structure, and a support member is provided in the flow channel of the cooling body. Each two adjacent connecting sections of the support member are fixedly connected to the two inner side surfaces opposite to each other in the thickness direction of the cooling body, which can support the cooling body in the thickness direction. At the same time, the buffer section connects the two adjacent connecting sections and is constructed to be able to produce elastic deformation after being subjected to force. In this way, when the cooling body is compressed, the buffer section can absorb part of the stress and produce elastic deformation, and disperse the stress on the cold plate through the entire support member, avoiding stress concentration, reducing the impact of stress on the cooling structure and battery cells, making the battery less likely to be damaged, and ensuring its normal use.

[0019] According to another aspect of the present application, an embodiment of the present application further provides an electrical device, comprising: a battery as described above, the battery being used to provide electrical energy.

[0020] The above-mentioned electrical device uses the above-mentioned battery to provide electrical energy. Since the battery is not easily damaged, the safety and reliability of the electrical device are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0022] FIG1 is a schematic diagram of the overall structure of a vehicle provided by one embodiment of the present application;

[0023] FIG2 is a schematic diagram of the overall structure of a battery provided in one embodiment of the present application;

[0024] FIG3 is an exploded view of the overall structure of a battery provided in one embodiment of the present application;

[0025] FIG4 is a schematic diagram of the overall structure of a cooling structure provided by an embodiment of the present application;

[0026] FIG5 is a cross-sectional view of a cooling structure provided by one embodiment of the present application;

[0027] FIG6 is a partial enlarged schematic diagram of point A in FIG5 ;

[0028] FIG7 is a cross-sectional view of a cooling structure provided by another embodiment of the present application;

[0029] FIG8 is a partial enlarged schematic diagram of point B in FIG7 .

[0030] The accompanying drawings in the specific implementation manner are as follows:

[0031] 1: Electrical device;

[0032] 10: Battery;

[0033] 100: cooling structure;

[0034] 110: cooling body, 111: flow channel;

[0035] 120: support member, 121: connecting section, 122: buffer section, 123: protrusion, 1231: top wall, 1232: side wall;

[0036] 200: box;

[0037] 300: Battery cell. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0041] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0044] With the advancement of technology, power batteries are finding an increasingly wide range of applications. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power stations, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As the application of power batteries continues to expand, battery safety is becoming a key concern.

[0045] The applicant has noted that to meet the growing demand for high-power discharge and rapid charging, battery energy density continues to increase, and the heat generated by batteries during use is also increasing. Therefore, it is necessary to incorporate a cooling structure within the battery to cool the battery. However, in related art, the battery cells in the battery assembly expand due to heat and squeeze each other, causing significant stress on both the battery cells and the cooling structure, which can easily damage the battery and affect normal use.

[0046] Based on the above considerations, in order to solve the problem that both the battery cell and the cooling structure are subjected to large stress, which causes the battery to be easily damaged and affects normal use, the applicant has designed a cooling structure after in-depth research. By arranging a support member in the flow channel of the cooling body, each two adjacent connecting sections of the support member are fixedly connected to the two inner side surfaces opposite to each other in the thickness direction of the cooling body, which can support the cooling body in the thickness direction. At the same time, the buffer segment connects the two adjacent connecting sections and is constructed to be able to produce elastic deformation after being subjected to force. In this way, when the cooling body is under pressure, the buffer segment can absorb part of the stress and produce elastic deformation, and disperse the stress on the cold plate through the entire support member, avoiding stress concentration, reducing the impact of stress on the cooling structure and battery cells, making the battery less likely to be damaged, and ensuring its normal use.

[0047] The cooling structure disclosed in the embodiment of the present application is applied to a battery. When a battery equipped with the cooling structure disclosed in the embodiment of the present application is used, when its cooling body is under pressure, the buffer section can absorb part of the stress and produce elastic deformation, and disperse the stress on the cold plate through the entire support member, thereby avoiding stress concentration and reducing the impact of stress on the cooling structure and battery cells, making the battery less susceptible to damage and having high battery reliability.

[0048] The present invention provides an electrical device using a battery as a power source. The electrical device may include, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, and the like. 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. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft.

[0049] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device 1 in one embodiment of the present application. Referring to FIG1 , FIG1 is a schematic diagram of the overall structure of a vehicle provided in one embodiment of the present application.

[0050] The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, wherein the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is provided inside the vehicle, and the battery 10 can be provided at the bottom, head or tail of the vehicle. The battery 10 can be used to power the vehicle, for example, the battery 10 can be used as an operating power source for the vehicle. The vehicle may also include a controller and a motor, and the controller is used to control the battery 10 to power the motor, for example, for the starting, navigation and working power requirements of the vehicle during driving. In some embodiments of the present application, the battery 10 can not only serve as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0051] Please refer to Figures 2 to 3. Figure 2 is a schematic diagram of the overall structure of a battery 10 provided in one embodiment of the present application. Figure 3 is an exploded view of the overall structure of a battery 10 provided in one embodiment of the present application.

[0052] The battery 10, comprised of battery cells 300, can serve as the power supply system for the electrical device 1. Several battery cells 300 are housed within the housing 200. A battery cell 300 is the smallest unit that makes up the battery 10. The battery 10 can contain multiple battery cells 300, which can be connected in series, parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the battery 300. Multiple battery cells 300 can be directly connected in series, parallel, or in a hybrid configuration to form a battery module, which is then housed within the housing 200 of the battery 10. Alternatively, multiple battery cells 300 can be first connected in series, parallel, or in a hybrid configuration to form a battery module, which is then subsequently connected in series, parallel, or in a hybrid configuration to form a battery module, which is then housed within the housing 200 of the battery 10.

[0053] The housing 200 is used to provide storage space for the battery cells 300. The housing 200 can adopt a variety of structures. In some embodiments, the housing 200 may include a bottom plate and several side plates, which are connected end to end. The bottom plate is connected to the bottom of each side plate and together with the side plates, defines a storage space for the battery cells 300. In other words, the bottom plate and side plates enclose a storage slot. Of course, the storage slot formed by the bottom plate and side plates can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0054] A cooling structure 100 is provided between two adjacent battery cells 300 within the housing 200. The location of the cooling structure 100 varies depending on how the multiple battery cells 300 are arranged within the housing 200. In some embodiments, as shown in Figures 2 and 3, multiple battery cells 300 are arranged in a rectangular array within the housing 200. In this case, the cooling structure 100 extends along the long side of the rectangle, and the multiple cooling structures 100 are spaced apart along the short side of the rectangle. This improves the utilization of the space within the housing 200, and the contact area between the cooling structure 100 and the battery cells 300 is also larger, resulting in a better cooling effect on the battery cells 300. Of course, in other embodiments, the battery cells 300 and the cooling structure 100 can also be arranged along other directions within the housing 200, which will not be repeated here.

[0055] According to some embodiments of the present application, referring to Figures 4 to 6, Figure 4 is a schematic diagram of the overall structure of the cooling structure 100 provided in one embodiment of the present application, Figure 5 is a cross-sectional view of the cooling structure 100 provided in one embodiment of the present application, and Figure 6 is a partial enlarged schematic diagram of point A in Figure 5.

[0056] An embodiment of the present application provides a cooling structure 100, which includes a cooling body 110 and a support member 120. A flow channel 111 is provided in the cooling body 110; the support member 120 is provided in the flow channel 111; the support member 120 includes at least two connecting sections 121 and a plurality of buffer sections 122, each two adjacent connecting sections 121 are fixedly connected to the two inner side surfaces opposite to each other in the thickness direction of the cooling body 110, the buffer section 122 connects the two adjacent connecting sections 121, and is constructed to be able to generate elastic deformation after being subjected to force.

[0057] The cooling structure 100 is used to cool the battery 10, wherein the flow channel 111 is a channel opened on the cooling body 110 for fluid circulation. The flow channel 111 can confine the fluid therein so that the fluid flows in a specific direction. The cross-sectional shape, cross-sectional size, extension direction, etc. of the flow channel 111 are not limited here. When in use, the flow channel 111 can be filled with a heat-conducting fluid. When the heat-conducting fluid flows in the flow channel 111, it flows through one or more sides of the battery cell 300, takes away the heat generated by the battery cell 300, flows to the outside for heat dissipation and cooling, and then flows through one or more sides of the battery cell 300 again, forming a cycle, so as to achieve the effect of cooling and lowering the temperature of the battery cell 300.

[0058] The cooling body 110 may have any structural form. In some embodiments, as shown in FIG4 and FIG5 , the cooling body 110 may be a plate-like structure, which may include two opposing support plates fixedly connected at their ends to form a sealed structure, with a flow channel 111 formed between the two support plates. The two support plates may be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any particular limitation on this.

[0059] During use, the cooling structure 100 is disposed on one or more sides of the battery cells 300. When the battery cells 300 expand due to heat, they compress the cooling structure 100. Therefore, in the embodiment of the present application, the cooling structure 100 further includes a support member 120. The support member 120 is disposed within the flow channel 111 of the cooling body 110 to support the cooling body 110. Among them, the support member 120 includes at least two connecting segments 121 and several buffer segments 122, and each two adjacent connecting segments 121 are fixedly connected to the two inner surfaces opposite to each other in the thickness direction of the cooling body 110, that is, the cooling body 110 has two opposite inner surfaces in its thickness direction. Among any two adjacent connecting segments 121, one is fixedly connected to one inner surface of the cooling body 110, and the other is fixedly connected to the other inner surface of the cooling body 110, so that the two connecting segments 121 can support the cooling body 110 in the thickness direction. At the same time, a buffer segment 122 is provided between each two adjacent connecting segments 121, and the buffer segment 122 connects the two adjacent connecting segments 121. The buffer segment 122 is constructed to be able to generate elastic deformation after being subjected to force. In this way, when the cooling body 110 is pressed and squeezed to the connecting segment 121, the buffer segment 122 can absorb part of the stress and generate elastic deformation.

[0060] In the cooling structure 100, the length of each connecting end and the number of connecting sections 121 can be adjusted according to the size of the flow channel 111 in the cooling body 110. At this time, the length and number of the buffer sections 122 are adaptively adjusted according to the parameters of the connecting sections 121 to ensure that the support member 120 can provide good support for the cooling body 110.

[0061] The cooling structure 100 of the embodiment of the present application is provided with a support member 120 in the flow channel 111 of the cooling body 110. Each two adjacent connecting sections 121 of the support member 120 are fixedly connected to the two inner side surfaces opposite to each other in the thickness direction of the cooling body 110, and can support the cooling body 110 in the compressive direction. At the same time, the buffer section 122 connects the two adjacent connecting sections 121 and is constructed to be able to generate elastic deformation after being subjected to force. In this way, when the cooling body 110 is under pressure, the buffer section 122 can absorb part of the stress and generate elastic deformation, and disperse the stress on the cold plate through the entire support member 120, thereby avoiding stress concentration and reducing the influence of stress on the cooling structure 100 and the battery cell 300, so that the battery 10 is not easily damaged, ensuring its normal use.

[0062] In some embodiments, each connecting segment 121 is attached to the inner surface of the cooling body 110 , and at least one connecting segment 121 is provided with a protrusion 123 protruding toward the center of the flow channel 111 along the thickness direction of the cooling body 110 .

[0063] As described above, each two adjacent connecting segments 121 are fixedly connected to the two inner surfaces of the cooling body 110 that are opposite to each other in the thickness direction. The fixed connection between the two can be welding, screwing, etc. In order to ensure the tightness of the connection between the connecting segment 121 and the cooling body 110, the connecting segment 121 is attached to the inner surface of the cooling body 110. In this way, the contact area between the connecting segment 121 and the cooling body 110 is larger. In addition, one or more or all of the connecting segments 121 are provided with a protrusion 123 that protrudes toward the center of the flow channel 111 along the thickness direction of the cooling body 110. In this way, when the cooling body 110 is pressurized, the protrusion 123 can abut against the inner surface of the cooling body 110 opposite to the protrusion 123, so that a certain gap is maintained between the two inner surfaces of the cooling body 110 that are opposite to each other in the thickness direction, thereby ensuring the normal use of the flow channel 111 and preventing the flow channel 111 from being crushed.

[0064] In some embodiments, the protrusion 123 includes a top wall 1231 and side walls 1232 respectively connected to both sides of the top wall 1231; the angle between the top wall 1231 and the side walls 1232 is greater than or equal to 90 degrees (°) and less than 180 degrees (°).

[0065] The protrusion 123 extends toward the center of the flow channel 111, so its top wall 1231 is opposite to the inner surface of the cooling body 110 and spaced from each other. The top wall 1231 and the inner surface of the cooling body 110 are connected by the side wall 1232. Depending on the different angles between the top wall 1231 and the side wall 1232, the cross-sectional shape of the protrusion 123 is also different. For example, if the angle between the top wall 1231 and the side wall 1232 is 90°, the cross-sectional shape of the protrusion 123 is rectangular. If the angle between the top wall 1231 and the side wall 1232 is greater than 90°, the cross-sectional shape of the protrusion 123 is trapezoidal. This design makes the shape of the protrusion 123 variable, so that it can be adjusted according to different usage requirements, thereby expanding the scope of application of the cooling structure 100 in this embodiment. Exemplarily, the angle between the top wall 1231 and the side wall 1232 can be 90°, 100°, 110°, 120°, 135°, etc. The above data are only for example. In actual embodiments, the angle between the top wall 1231 and the side wall 1232 is not limited to the above data.

[0066] In some embodiments, to ensure symmetry in the structure of the protrusion 123 for ease of processing and manufacturing, the angles between the two side walls 1232 and the top wall 1231 are equal. Of course, in other embodiments, the angles between the two side walls 1232 and the top wall 1231 may be unequal. In this case, the minimum angle between the top wall 1231 and the side walls 1232 refers to the smaller angle between the two side walls 1232 and the top wall 1231, and the maximum angle between the top wall 1231 and the side walls 1232 refers to the larger angle between the two side walls 1232 and the top wall 1231.

[0067] In some embodiments, the plane where the top wall 1231 is located is parallel to the inner surface of the cooling body 110; the distance between the top wall 1231 and the inner surface of the cooling body 110 connected to the top wall 1231 through the side wall 1232 is greater than or equal to 1 millimeter (mm) and less than or equal to 3 millimeters (mm).

[0068] As described above, the top wall 1231 of the protrusion 123 is opposite to and spaced from the inner surface of the cooling body 110. In some embodiments, by making the surface of the top wall 1231 parallel to the inner surface of the cooling body 110, when the cooling body 110 is compressed and the main body contacts the inner surface of the cooling body 110, the contact area between the protrusion 123 and the inner surface of the cooling body 110 can be increased, making the force on the protrusion 123 more uniform and the structure more stable. By changing the distance between the surface of the top wall 1231 and the inner surface of the cooling body 110, the protrusion height of the protrusion 123 is changed, making it easier to adjust the protrusion degree of the protrusion 123. Exemplarily, the distance between the top wall 1231 and the inner surface of the cooling body 110 connected to the top wall 1231 through the side wall 1232 can be 1 mm, 1.5 mm, 2 mm, 2.4 mm, 3 mm, etc. The above data are only for example. In actual embodiments, the distance between the top wall 1231 and the inner surface of the cooling body 110 connected to the top wall 1231 through the side wall 1232 is not limited to the above data.

[0069] In some embodiments, the protrusions 123 are symmetrically arranged about the center line of the connecting section 121 where they are located.

[0070] In order to make the structure of the protrusion 123 symmetrical for easy processing and manufacturing, the protrusion 123 is symmetrically arranged about the center line of the connecting section 121 in which it is located. At this time, the lengths of the two side walls 1232 of the protrusion 123 are equal, and the angles between the two side walls 1232 and the top wall 1231 are also equal. This design makes the protrusion 123 located at the center position of the connecting end in which it is located. In this way, the force distribution between the protrusion 123 and the connecting section 121 is more uniform and the structural stability is higher.

[0071] Please refer to FIG. 4 to FIG. 8 , FIG. 7 is a cross-sectional view of a cooling structure 100 provided in another embodiment of the present application, and FIG. 8 is a partial enlarged schematic diagram of point B in FIG. 7 .

[0072] In some embodiments, the cross-sectional shape of the buffer segment 122 is a straight line, a broken line, or an arc.

[0073] In the embodiments shown in Figures 5 to 6, the cross-sectional shape of the buffer segment 122 is an arc shape. In the embodiments shown in Figures 7 to 8, the cross-sectional shape of the buffer segment 122 is a broken line shape. In other embodiments not shown, the cross-sectional shape of the buffer segment 122 can also be a straight line shape. By changing the cross-sectional shape of the buffer segment 122, that is, changing the force distribution of the buffer segment 122 and the direction of its elastic deformation, it can be flexibly selected according to different usage requirements.

[0074] In some embodiments, the connection between the connecting segment 121 and the buffer segment 122 has a smooth transition.

[0075] The connection between the connecting section 121 and the buffer section 122 is located on the inner surface of the cooling body 110. By making the connection between the connecting section 121 and the buffer section 122 smooth, the force at the connection can be dispersed, stress concentration can be avoided, and the reliability of the cooling structure 100 can be improved. The smooth transition can be achieved by rounding the corners at the connection between the connecting section 121 and the buffer section 122.

[0076] In some embodiments, the cooling structure 100 further includes a driving member connected to the buffer segment 122 to drive the buffer segment 122 to generate elastic deformation, or drive the buffer segment 122 to restore to a state before the elastic deformation.

[0077] The driving member can actively drive the buffer section 122 to produce elastic deformation or restore to the state before the elastic deformation. By arranging a driving member connected to the buffer section 122 in the cooling structure 100, even if the cooling body 110 is not subjected to external pressure, the driving member can drive the buffer section 122 to produce elastic deformation. By means of the active deformation of the buffer section 122, the shape of the cooling body 110 can be changed in advance to prevent it from being subjected to greater pressure, thereby protecting the cooling body 110 and making it more flexible to use. In some embodiments, a control device can be arranged in the cooling structure 100, and the control device is electrically connected to the driving member and can send a signal to control the action of the driving member. A sensing device can also be arranged in the cooling structure 100, and the sensing device can sense the temperature or pressure changes in the cooling body 110 to help the user assist in judging the current state of the cooling structure 100.

[0078] The embodiment of the present application further provides a battery 10 , which includes a housing 200 , a battery cell 300 and a cooling structure 100 as in any of the above embodiments. The battery cell 300 is housed in the housing 200 ; the cooling structure 100 is attached to one or more sides of the battery cell 300 .

[0079] The cooling structure 100 is attached to one or more sides of the battery cell 300 to contact one or more surfaces of the battery cell 300 and cool it. The battery 10 of the embodiment of the present application adopts the above-mentioned cooling structure 100, and a support member 120 is provided in the flow channel 111 of the cooling body 110. Each two adjacent connecting segments 121 of the support member 120 are fixedly connected to the two inner side surfaces of the cooling body 110 opposite to each other in the thickness direction, and can support the cooling body 110 in the thickness direction. At the same time, the buffer segment 122 connects the two adjacent connecting segments 121 and is constructed to be able to generate elastic deformation after being subjected to force. In this way, when the cooling body 110 is under pressure, the buffer segment 122 can absorb part of the stress and generate elastic deformation, and disperse the stress on the cold plate through the entire support member 120, thereby avoiding stress concentration and reducing the influence of stress on the cooling structure 100 and the battery cell 300, so that the battery 10 is not easily damaged and its normal use is ensured.

[0080] An embodiment of the present application further provides an electrical device 1 , which includes a battery 10 as in any of the above embodiments, and the battery 10 is used to provide electrical energy.

[0081] The electrical device 1 of the embodiment of the present application uses the above-mentioned battery 10 to provide electrical energy. Since the battery 10 is not easily damaged, the safety and reliability of the electrical device 1 are also improved.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A cooling structure, comprising: A cooling main body, in which a flow channel is provided; And A support member disposed in the flow channel; the support member includes at least two connecting segments and a plurality of buffer segments. Each adjacent two of the connecting segments are fixedly connected to two inner side surfaces of the cooling main body opposite to each other in the thickness direction. The buffer segments connect adjacent two of the connecting segments and are configured to be able to generate elastic deformation when stressed.

2. The cooling structure according to claim 1, wherein, Each of the connecting segments is attached to the inner side surface of the cooling main body, and at least one of the connecting segments is provided with a protruding portion protruding towards the center of the flow channel in the thickness direction of the cooling main body.

3. The cooling structure according to claim 2, wherein, The protruding portion includes a top wall and side walls respectively connected to both sides of the top wall; The included angle between the top wall and the side walls is greater than or equal to 90° and less than 180°.

4. The cooling structure according to claim 3, wherein, The plane where the top wall is located is parallel to the inner side surface of the cooling main body; The distance between the top wall and the inner side surface of the cooling main body connected to the top wall through the side walls is greater than or equal to 1 mm and less than or equal to 3 mm.

5. The cooling structure according to claim 2, wherein, The protruding portion is symmetrically arranged about the center line of the connecting segment where it is located.

6. The cooling structure according to any one of claims 1 to 5, wherein, The cross-sectional shape of the buffer segment is linear, polygonal or arc-shaped.

7. The cooling structure according to any one of claims 1 to 6, wherein, The connection between the connecting segment and the buffer segment is smoothly transitioned.

8. The cooling structure according to any one of claims 1 to 7, wherein, The cooling structure further includes a driving member, and the driving member is connected to the buffer segment to drive the buffer segment to generate elastic deformation or drive the buffer segment to return to the state before generating elastic deformation.

9. A battery, comprising: A box body; A battery cell, and the battery cell is received in the box body; And The cooling structure according to any one of claims 1 to 8, and the cooling structure is attached to one side or multiple sides of the battery cell.

10. An electrical device, comprising: The battery according to claim 9, and the battery is used to provide electrical energy.

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