Cooling structure, battery and electric device

Abstract

The invention provides a cooling structure, a battery and an electric device. The cooling structure comprises a side plate and a cooling channel arranged on at least one side of the side plate. The side plates are configured to be capable of deforming towards the side where the cooling channel is located and generating deformation quantities, and the side plates have different deformation quantities in at least one direction. The side, facing the side where the cooling channel is located, of the side plate can deform and generate deformation quantities, and the side plate has different deformation quantities in at least one direction. The side face, making contact with the side plate, of the cooled part has different expansion degrees, different-size abutting force is generated on different areas of the side plate through the different expansion degrees, expansion spaces needed by the different expansion degrees are provided through different deformation quantities on the side plate, and the cooled part is allowed to generate different expansion according to changes of internal stress. And the service life of the cooled part is kept normal or the service life of the cooled part is prolonged.

Description

Technical Field

[0001] The present application belongs to the field of new energy technology, and more specifically, relates to a cooling structure, a battery and an electrical device. Background Art

[0002] Power batteries or energy storage batteries generate heat during the charging and discharging process, and a cooling structure is generally used to dissipate the heat by contact heat dissipation.

[0003] Different areas of the side of the battery in contact with the cooling structure expand to different degrees, and different areas generate different resistance forces on the cooling structure surface in contact with them. When the deformation amount that the cooling structure surface can provide is the same, the cooling structure surface cannot meet the different expansion requirements of different areas of the battery, resulting in a shortened battery life. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a cooling structure, a battery and an electrical device to solve the technical problem that the existing cooling structure cannot meet the expansion requirements of different areas of the battery, resulting in a shortened battery life.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] A cooling structure is provided, the cooling structure comprising a side plate and a cooling channel arranged on at least one side of the side plate;

[0007] The side plate is configured to be deformable toward the side where the cooling channel is located and to generate a deformable amount, and the side plate has different deformable amounts in at least one direction.

[0008] In the cooling structure provided by the technical solution, at least one side of the side plate is provided with a cooling channel for the cooling medium to flow through, and the cooling medium takes away the heat of the cooling part through the contact between the cooled part and the side plate.

[0009] The side plate can be deformed toward the side where the cooling channel is located, and a deformable amount is generated. At least in one direction, the side plate has different deformable amounts. The side surfaces of the cooled component in contact with the side plate have different expansion degrees, and different expansion degrees generate different resistance forces on different areas of the side plate. Different deformation amounts on the side plate provide expansion space required for different expansion degrees, allowing the cooled component to expand differently according to the internal stress, so that the service life of the cooled component remains normal or its service life is extended.

[0010] In some embodiments, the deformability of the side panel decreases from the middle area of ​​the side panel to the edge area of ​​the side panel.

[0011] Generally, the expansion degree of the middle area of ​​the surface of the cooled part is the largest, and the expansion degree of the surface tends to decrease from the middle area to the edge area. In order to adapt to the expansion change trend of the surface of the cooled part, the side plate is set so that the deformable amount decreases from the middle area to the edge area, and the change trend of the deformable amount tends to be consistent with the expansion change trend, so that the side plate can further meet the expansion requirements of the cooled part.

[0012] In some embodiments, the side panel includes a first deformation portion, a second deformation portion, and a third deformation portion sequentially arranged from the middle area of ​​the side panel to the edge area of ​​the side panel;

[0013] The deformable amount of the first deformable portion is greater than or equal to the deformable amount of the second deformable portion, and the deformable amount of the second deformable portion is greater than the deformable amount of the third deformable portion.

[0014] The side panel is divided into a plurality of different panel parts from the middle area to the edge area, and the deformable amounts of the different panel parts are distinguished and compared to make them decrease, so that the change of the deformable amount is more refined and more suitable for the expansion requirements of the cooled component.

[0015] In some embodiments, the side plate includes two of the second deformation portions and two of the third deformation portions;

[0016] The two second deformation parts are arranged on two opposite sides of the first deformation part, and the two third deformation parts are arranged on two sides of the two second deformation parts away from the first deformation part.

[0017] Considering that any two opposite sides of the middle area have edge areas, the second deformation part and the third deformation part are arranged on the opposite sides of the first deformation part to meet the expansion requirements of the cooled part in the entire contact area between the side plate and the cooled part.

[0018] In some embodiments, the cooling structure includes two side plates, the two side plates are arranged opposite to each other, and the cooling channel is arranged between the two side plates.

[0019] Both side plates can be deformed toward each other, and cooled parts can be set on the sides of the two side plates facing away from each other. The cooled parts on both sides are cooled through the cooling channels between the two side plates, thereby improving the integration while meeting the expansion requirements of the cooled parts.

[0020] In some embodiments, the cooling structure includes a plurality of partitions disposed between the two side plates;

[0021] The partition plate extends along the first direction, the plurality of partition plates are arranged at intervals along the second direction, and two adjacent partition plates and two side plates are combined to form the cooling channel extending along the first direction;

[0022] In the second direction, from the middle area to the edge area of ​​the side plate, the deformability of the side plate decreases.

[0023] Multiple partitions are arranged at intervals along the second direction, and the deformable variable of the side plate has a changing trend in the second direction. Compared with the deformable variable of the side plate having a changing trend in the first direction, it is more conducive to using multiple partitions to achieve different configurations of the deformable variable.

[0024] In some embodiments, in the second direction, from the middle area of ​​the side plate to the edge area, the side plate includes a first deformation portion, a second deformation portion and a third deformation portion;

[0025] The deformable amount of the first deformable portion is greater than the deformable amount of the second deformable portion, and the deformable amount of the second deformable portion is greater than the deformable amount of the third deformable portion.

[0026] In the second direction, the side panel is divided into a plurality of different panel portions from the middle area to the edge area, and the deformable quantities of the different panel portions are distinguished and compared to make them decrease. The change of the deformable quantity in the second direction is more refined and more adapted to the expansion requirements of the cooled component in the second direction.

[0027] In some embodiments, the partition includes a first partition connected to the first deformation portion at an angle, and a second partition connected to the second deformation portion at an acute angle, and the acute angle between the second partition and the second deformation portion is smaller than the angle between the first partition and the first deformation portion.

[0028] From the edge area of ​​the side panel to the middle area, the deformation resistance of the side panel tends to weaken. The deformation resistance of the edge area is relatively high, which is conducive to maintaining the contour shape of the cooling structure. The deformation resistance of the middle area is relatively weak, which is conducive to absorbing the resistance and deformation of the middle area where the cooled part has the largest expansion.

[0029] The third deformation part has the highest anti-deformation capability, and the second deformation part and the first deformation part have roughly similar structures. Since the second deformation part is close to the third deformation part, the third deformation part strengthens the anti-deformation capability of the second deformation part. Therefore, even if the second deformation part and the first deformation part have roughly similar structures, the anti-deformation capability of the second deformation part is much higher than that of the first deformation part due to the auxiliary reinforcement effect of the third deformation part.

[0030] In order to relatively weaken the deformation resistance of the second deformation part, increase the deformability of the second deformation part, meet the expansion requirements of the corresponding local area of ​​the cooled part, but still lower than the deformation resistance of the third deformation part and higher than the first deformation part, the angle between the second partition and the second deformation part is set to an acute angle, so that the acute angle formed by the second partition and the second deformation part is smaller than the angle formed by the first partition and the first deformation part. The smaller the angle, the more conducive to increasing the deformability. The deformability of the second deformation part increases, but is still smaller than the deformability of the first deformation part. The first deformation part, the second deformation part and the third deformation part show a decreasing trend, meeting the expansion change requirements of the surface of the cooled part.

[0031] In some embodiments, the first partition is connected to the first deformation portion at an acute angle.

[0032] The first partition and the first deformable part form an acute angle or a right angle, and the smaller the angle, the more conducive to increasing the deformability. Compared with a right angle, the first partition and the first deformable part form an acute angle, which is more conducive to increasing the deformability of the first deformable part, satisfying the resistance of the middle area of ​​the cooled part with the largest expansion degree and deforming accordingly.

[0033] In some embodiments, the number of the second partitions is one or more, and the number of the first partitions is multiple;

[0034] The distance between two adjacent second partitions is greater than the distance between two adjacent first partitions;

[0035] And / or, the distance between adjacent second partitions and first partitions is greater than the distance between two adjacent first partitions.

[0036] For cooled parts with higher expansion change requirements, simply improving the angle between the partition and the deformation part is not enough to provide sufficient deformable space. Therefore, based on the improvement of the angle between the partition and the deformation part, the spacing between the partitions is improved. The larger the spacing, the more conducive it is to increasing the deformability. By providing more deformability, the cooled parts with higher expansion requirements can be satisfied.

[0037] In some embodiments, the partition includes one or more second partitions connected to the second deformation portion, and a plurality of first partitions connected to the first deformation portion;

[0038] The distance between two adjacent second partitions is greater than the distance between two adjacent first partitions;

[0039] And / or, the distance between adjacent second partitions and first partitions is greater than the distance between two adjacent first partitions.

[0040] In order to relatively weaken the deformation resistance of the second deformation part, increase the deformability of the second deformation part, meet the expansion requirements of the corresponding local area of ​​the cooled part, but still lower than the deformation resistance of the third deformation part and higher than the first deformation part, set the spacing between two adjacent second partitions and / or the spacing between the adjacent second partitions and the first partition to a large spacing, and set the spacing between two adjacent first partitions to a small spacing. The larger the spacing, the more conducive to increasing the deformability. The deformability of the second deformation part increases, but is still smaller than the deformability of the first deformation part. The first deformation part, the second deformation part, and the third deformation part are reduced to meet the expansion change requirements of the surface of the cooled part.

[0041] In some embodiments, the second partition is connected to the second deformation portion at an angle, the first partition is connected to the first deformation portion at an angle, and the angle between the second partition and the second deformation portion is less than or equal to the angle between the first partition and the first deformation portion.

[0042] For the cooled parts with higher expansion change requirements, improving the spacing between the partitions alone is not enough to provide sufficient deformable space. Therefore, based on the improvement of the spacing between the partitions, the angle between the partitions and the deformable part is improved. The smaller the angle, the more conducive to increasing the deformability. By providing more deformability, the cooled parts with higher expansion requirements can be met. Among them, the angle between the first partition and the first deformable part and the angle between the second partition and the second deformable part can both be acute angles or right angles.

[0043] In some embodiments, the thickness of the second separator is smaller than the thickness of the first separator;

[0044] And / or, the number of the second partitions is less than the number of the first partitions.

[0045] For cooled parts with higher expansion change requirements, improving the spacing between partitions and / or the angle between the partitions and the deformation part is not enough to provide sufficient deformable space, and increasing the thickness and / or number of partitions. The smaller the thickness, the more conducive to increasing the deformability, and the smaller the number, the more conducive to increasing the deformability. By providing more deformability, the cooled parts with higher expansion requirements can be met.

[0046] In some embodiments, the thickness of the first deformation portion is the same as the thickness of the second deformation portion, the thickness of the second partition is the same as the thickness of the first partition, and the thickness of the third deformation portion is greater than the thickness of the first deformation portion and the second deformation portion.

[0047] The plate thickness of the third deformation part is greater than that of the first deformation part and the second deformation part, which is beneficial to maintaining the contour shape of the cooling structure. The plate thickness of the first deformation part is the same as the plate thickness of the second deformation part, and the plate thickness of the second partition is the same as the plate thickness of the first partition, which is beneficial to improve the adaptability of the angle between the partition and the deformation part and the distance between the partitions on the basis of consistent plate thickness without being affected by inconsistent plate thickness.

[0048] In some embodiments, the thickness of the third deformation portion gradually increases in a direction away from the second deformation portion, and two ends of the two third deformation portions of the two side plates away from the second deformation portion are closed and connected.

[0049] The two third deformation parts are closed and connected at two ends away from the second deformation part, thereby improving the deformation resistance of the third deformation part and compensating for the weakening effect on the deformation resistance of the third deformation part caused by the acute angle arrangement of the second partition plate and the second deformation part.

[0050] Another object of the present application is to provide a battery, comprising a battery cell and the cooling structure as described above, wherein at least one side of the side plate is in contact with a side surface of the battery cell.

[0051] The battery provided by the present application has a cooling channel configured on at least one side of the side plate for the cooling medium to flow through, and at least one side of the side plate contacts the battery cell, so that the cooling medium takes away the heat of the battery cell through the contact. Different regions on the battery cell that contact the side plate have different expansion degrees, and different expansion degrees produce different resistance forces on different regions of the side plate. Different deformation amounts in different regions on the side plate provide expansion space required for different expansion degrees, allowing different regions of the battery cell to expand adaptively according to changes in internal stress, so that the service life of the battery cell remains normal or its service life is extended.

[0052] In some embodiments, the battery cell is square in shape, and the at least one side is in contact with the largest surface of the battery cell.

[0053] The expansion of the largest surface area of ​​the battery cell has an obvious changing trend. The expansion degree is most obvious in the middle area. From the middle area to the edge area, the expansion degree tends to decrease. At least one side of the side plate is in contact with the largest surface area of ​​the battery cell, which is more adapted to the expansion requirements of the largest surface area.

[0054] In some embodiments, the cooling channel extends along a first direction, the battery includes a plurality of battery cells sequentially arranged along the first direction, and a plurality of surfaces with the largest areas are in contact with the same side of the side plate;

[0055] In a second direction perpendicular to the first direction, from the middle area of ​​the side plate to the edge area, the deformable amount of the side plate decreases。

[0056] The extension direction of the cooling channel is consistent with the arrangement direction of the multiple battery cells, and the cooling structure can efficiently cool the multiple battery cells. In the second direction, the side plate is arranged from the middle area to the edge area so that the deformable amount tends to decrease, meeting the expansion requirements of the largest surface area of ​​each battery cell arranged along the first direction.

[0057] Another object of the present application is to provide an electrical device, wherein the electrical device comprises the battery as described above.

[0058] The electrical device provided in the present application is applied with the battery provided in the present application, and the battery provided in the present application is applied with the cooling structure provided in the present application. The cooling structure allows different areas of the battery to expand adaptively according to changes in internal stress, and is not likely to cause adverse inhibition on the expansion of the battery, which is beneficial to improving the safety of battery use and improving the safety of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art 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 these drawings without paying creative labor.

[0060] Figure 1 A schematic diagram of a battery provided in an embodiment of the present application from a first viewing angle;

[0061] Figure 2 A schematic diagram of a battery provided in an embodiment of the present application from a second viewing angle;

[0062] Figure 3 for Figure 2 Sectional view in the AA direction;

[0063] Figure 4 A schematic diagram of a cooling structure provided in an embodiment of the present application;

[0064] Figure 5 for Figure 4 Cross-sectional view in CC direction;

[0065] Figure 6 for Figure 4 Cross-sectional view in the BB direction;

[0066] Figure 7 A schematic diagram of an electrical device provided in an embodiment of the present application.

[0067] Among them, the reference numerals in the figure are:

[0068] 10. Cooling structure; 100. Battery; 1000. Electrical device;

[0069] 11. Cooling body; 12. Liquid inlet structure; 13. Liquid outlet structure; 120. Liquid inlet; 130. Liquid outlet;

[0070] 111. side plate; 112. partition plate; 113. cooling channel;

[0071] 1111, a first deformation portion; 1112, a second deformation portion; 1113, a third deformation portion;

[0072] 1121, a first partition; 1122, a second partition;

[0073] 101, battery cell; 1001, controller; 1002, motor. DETAILED DESCRIPTION

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] The term "plurality" used in the present application refers to two or more (including two).

[0081] Power batteries or energy storage batteries generate heat during the charging and discharging process, and a cooling structure is generally used to dissipate the heat in a contact heat dissipation manner. For example, a cooling plate is used to contact and fit the surface of the battery, and a medium channel is provided inside the cooling plate for the cooling medium to flow through.

[0082] The surface of the battery expands due to the heat inside the battery, and the expansion degree of different areas on the battery surface is different. Generally, the expansion degree of the middle area of ​​the battery surface is the most obvious, and the expansion tends to decrease from the middle area to the edge area.

[0083] The deformation of the cooling structure provides the space required for the battery to expand and extend. Generally, the side plate of the cooling structure contacts the surface of the battery, and the interior of the cooling structure is separated into multiple medium channels by the plate structure. The thickness of the side plate is set uniformly, the thickness of multiple plate structures is consistent, the connection angle between the plate structure and the side plate is consistent, and the degree of deformation of the cooling structure is set uniformly.

[0084] When the degree of deformation provided by the cooling structure is uniform, the deformation of the cooling structure surface cannot meet the different expansion requirements of different areas of the battery surface, and does not allow different areas of the battery to expand adaptively according to changes in internal stress, resulting in a shortened battery life.

[0085] Based on the above considerations, in order to make the cooling structure meet the different expansion requirements of different areas of the battery, allow different areas of the battery to expand adaptively according to changes in internal stress, maintain the normal service life of the battery or extend its service life, a cooling structure is provided. Figures 1 to 3 The cooling structure 10 includes a side plate 111 and a cooling channel 113 disposed on at least one side of the side plate 111. The side plate 111 is configured to be deformable toward the side where the cooling channel 113 is located and generate a deformable amount, and the side plate 111 has different deformable amounts in at least one direction.

[0086] In the provided cooling structure 10, at least one side of the side plate 111 is provided with a cooling channel 113, through which a cooling medium can flow, and the side plate 111 and the battery 100 are in contact so that the cooling medium takes away the heat of the battery 100. The side plate 111 can be deformed toward the side where the cooling channel 113 is located, and a deformable amount is generated, and the deformable amounts of different areas of the side plate 111 are different. Different areas of the battery 100 that are in contact with the side plate 111 have different expansion degrees, and different expansion degrees produce different amounts of resistance forces on different areas of the side plate 111. The different deformation amounts of different areas on the side plate 111 provide expansion space required for different expansion degrees, allowing different areas of the battery 100 to expand adaptively according to changes in internal stress, so that the service life of the battery 100 remains normal or its service life is extended.

[0087] Reference Figures 1 to 3 The battery 100 provided in the embodiment of the present application can be used in, but not limited to, an electric device 1000 such as a vehicle, a ship or an aircraft. The battery 100 with the cooling structure 10 provided in the embodiment of the present application can be used to form a power supply system of the electric device 1000, which is beneficial to maintain or extend the service life of the battery 100 and the electric device 1000, and can also improve the safety and reliability of the battery 100 and the electric device 1000 during use.

[0088] In some embodiments, the battery 100 refers to a physical module including one or more battery cells 101 for providing voltage and capacitance. For example, it may include a battery cell 101, a battery 100 module, or a battery 100 pack. Generally, the battery 100 includes a single cell 100 and a box for accommodating the single cell 100. The box is used to accommodate and encapsulate one or more battery cells 101 or a battery 100 module. The box is used to protect the battery cell 101 and prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell 101.

[0089] The battery cell 101 may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery cell 101 may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application. The battery cell 101 is divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, which is not limited in the embodiments of the present application.

[0090] A battery cell 101 refers to the smallest unit that constitutes the battery 100. In the battery 100, there can be multiple battery cells 101, and the multiple battery cells 101 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 101 are both connected in series and in parallel. Multiple battery cells 101 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 101 is placed in a box. Of course, the battery 100 can also be a battery 100 module in which multiple battery cells 101 are first connected in series, in parallel, or in mixed connection, and multiple battery 100 modules are then connected in series, in parallel, or in mixed connection to form a whole, and placed in a box.

[0091] The electric device provided in the embodiment of the present application may be, but is not limited to, a mobile phone, a tablet, a laptop computer, 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.

[0092] The vehicle 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 arranged inside the vehicle, and the battery 100 may be arranged at the bottom, head or tail of the vehicle. The battery 100 may be used to power the vehicle, for example, the battery 100 may be used as an operating power source for the vehicle.

[0093] like Figure 7 As shown, the vehicle may further include a controller 1001 and a motor 1002. The controller 1001 is used to control the battery 100 to supply power to the motor 1002, for example, for starting, navigating, and operating the vehicle. In some embodiments, the battery 100 may not only be used as an operating power source for the vehicle, but may also be used as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0094] The cooling structure 10, the battery 100 and the electrical device 1000 provided in the embodiment of the present application are now described.

[0095] See also Figures 1 to 6The cooling structure 10 provided in the embodiment of the present application includes a side plate 111 and a cooling channel 113 arranged on at least one side of the side plate 111. The side plate 111 is configured to be able to deform toward the side where the cooling channel 113 is located and generate a deformable amount. The side plate 111 has different deformable amounts in at least one direction.

[0096] Cooling refers to the process of reducing the temperature of a heat-generating object by dissipating the heat of the heat-generating object, and the cooling structure 10 refers to a structure capable of implementing the cooling process, such as a cooling plate.

[0097] Reference Figure 4 and Figure 5 As shown, generally, the cooling structure 10 includes a cooling body 11, a liquid inlet structure 12, and a liquid outlet structure 13. A cooling channel 113 is arranged inside the cooling body 11, a liquid inlet 120 is arranged on the liquid inlet structure 12, and a liquid outlet 130 is arranged on the liquid outlet structure 13, and the liquid inlet 120 and the liquid outlet 130 are respectively connected to the cooling channel 113. The outer surface of the cooled part contacts the outer surface of the cooling body 11, and the low-temperature cooling medium enters the cooling channel 113 from the liquid inlet 120. The cooling medium and the cooled part contact the inner and outer surfaces of the cooling body 11 respectively to complete the heat exchange, and the heat of the cooled part increases the temperature of the low-temperature cooling medium, and the high-temperature cooling medium flows out of the cooling channel 113 through the liquid outlet 130, taking away the heat of the cooled part.

[0098] The side plate 111 refers to a plate structure constituting at least a part of the outline of the cooling body 11 .

[0099] In some embodiments, a cooling channel 113 is configured on one side of the side plate 111, so that the side plate 111 is used as a component of the channel wall of the cooling channel 113, and the other side of the side plate 111 that is away from the one side contacts the cooled component, and the side plate 111 is used as a transfer medium for heat exchange between the cooling medium and the cooled component. In one direction, that is, the direction in which the cooled component faces the side plate, the side plate has different deformable amounts.

[0100] In other embodiments, cooling channels 113 are arranged on both sides of the side plate 111, so that the side plate 111 serves as a component of the channel wall of the cooling channels 113 on both sides, and both sides of the side plate 111 can contact the cooled part, and the side plate 111 serves as a transfer medium for heat exchange between the cooling medium and the cooled part.

[0101] In two directions, that is, in the direction from the cooled parts on both sides to the middle side plate, the side plate has different deformable amounts in each direction. Due to the presence of cooling channels on both sides, both can provide space for deformable amounts, so the two directions on the same straight line can have deformable amounts in opposite directions, and the cooling channels absorb this part of the deformation.

[0102] Generally, the cooling body 11 is an integrally formed structure, and the side plate 111 is integrally connected with other parts of the cooling body 11 and is part of the overall outline structure of the cooling body 11. Generally, the side plate 111 may refer to the side plate structure with the largest area on the cooling body 11.

[0103] Generally, the cooling body 11 has one or more side plates 111 with the largest area, and the side plates 111 have a certain extension area and thickness, and the ratio of the extension area to the thickness is relatively large. A larger extension area is conducive to increasing the contact area between the cooling body 11 and the cooled part, which is conducive to improving the cooling efficiency. A smaller thickness is conducive to the rapid completion of heat exchange between the low-temperature cooling medium and the high-temperature cooled part, which is conducive to improving the cooling efficiency.

[0104] Among them, one-piece molding refers to a process of constructing a predetermined shape by deforming or extending a material body, or leaving a predetermined shape by partially removing a material body, including but not limited to the extension of the same material or the sequential extension of different materials, including but not limited to the process of using a stamping machine to stamp a blank material to deform it and finally form it into a predetermined shape, or using a forging tool to forge the blank material to deform it and finally form it into a predetermined shape, or using a cutting device to partially remove the blank material to leave a portion with a predetermined shape, or a process in which a liquid material is cast into a casting cavity that is adapted to the shape of the component and then cooled to obtain a component.

[0105] The process of obtaining a component by pouring a liquid material into a casting cavity adapted to the shape of the component may be to obtain a complete component in a cavity, in which one or more materials may be poured. Alternatively, a part of the component may be obtained in a cavity, and the part may be moved to another cavity, and another part of the component may be obtained in another cavity, and so on. Different parts of the complete component may be molded in different cavities in turn, and the materials of different parts of the complete component may be the same or different.

[0106] Reference Figure 5 As shown, the cooling channel 113 refers to a channel structure disposed inside the cooling body 11, and has a certain extension length and cross-sectional size. A certain extension length is conducive to extending the flow time of the cooling medium in the cooling channel 113, which is conducive to fully utilizing the cooling efficiency of the cooling medium. A certain cross-sectional size is conducive to measuring the amount of cooling medium passing through per unit time, which is conducive to maximizing the cooling efficiency of the cooling medium.

[0107] Reference Figure 5 and Figure 6As shown, the side plate 111 serves as a heat exchange transmission part, and a cooling channel 113 is arranged on one side of the side plate 111, so that the side plate 111 constitutes a component of the channel wall of the cooling channel 113. Generally, a plurality of cooling channels 113 are arranged in the cooling body 11, and the plurality of cooling channels 113 respectively occupy a part of the side plate 111, and the cooling medium in the plurality of cooling channels 113 respectively completes heat exchange with the cooled component by means of a part of the side plate 111.

[0108] Deformation refers to the process in which the relative positions of the material particles in a structure change due to the action of a force, which ultimately causes the change in its external form. Deformable volume refers to the amount of change in the external form of a structure along a preset direction due to the directional external force. Generally, deformation refers to the regional deformation formed by the morphological change of multiple points of a structure. Deformable volume refers to the amount of change measured by regional changes when at least part of the structure is deformed.

[0109] Generally, the deformation of a physical structure can be quantitatively measured using known deformation measurement techniques. Deformation measurement technology refers to measuring the deformation of a structural object in order to understand its direction, size, spatial distribution, and changes over time, and to make correct analysis and predictions.

[0110] Generally, deformation measurement technologies are roughly divided into two categories: one is to obtain the external morphological information of the deformation area and obtain deformation data based on the analysis or calculation of the external morphological information; the other is to obtain the internal stress information or pressure load of the deformation area and obtain deformation data based on the analysis or calculation of the internal stress information or pressure load.

[0111] For example, some more conventional measurement methods can be used for deformation measurement. These conventional measurement methods are generally based on geometry. Specific geometric parameters are obtained through instruments, and the required deformation trend or deformation amount is calculated using geometric principles. These methods include but are not limited to precise leveling measurements using optical or electronic levels, trigonometric height measurements using electromagnetic wave rangefinders, trigonometric side measurements, wire measurements, intersection measurements, and the like.

[0112] Some measurement methods based on image processing technology can also be used, including but not limited to digital photogrammetry and real-time photogrammetry. The amount of information obtained by digital photography or real-time photography is large and the information is relatively accurate. Based on the more comprehensive and accurate photographic information and the high utilization rate of this information, the deformation process and the corresponding deformation amount can be quickly obtained. Since photographic information can obtain high-precision deformation information, the deformation amount of any point can be confirmed with high precision through photogrammetry, which is suitable for measuring local deformation information with a small range.

[0113] Some more special measurement methods can also be used for deformation measurement, including but not limited to the use of laser collimators to implement collimation measurement methods, the use of inclinometers to implement deflection curve measurement methods, the use of indium watt ruler rangefinders to implement micro-distance precision measurement methods, etc. Special measurement methods can realize automatic monitoring and remote sensing monitoring, and the measurement accuracy and efficiency are relatively high, which are suitable for measuring local deformation information with a small measurement range.

[0114] The deformation data can also be obtained by using a micro sensor device array and analyzing the deformation data, including but not limited to a displacement sensor array, an acceleration sensor array, a fiber Bragg grating strain sensor array, etc. Among them, the fiber Bragg grating strain sensor array includes but is not limited to a fiber Bragg grating strain sensor array and / or a fiber Bragg grating temperature sensor array.

[0115] The equivalent stiffness method can also be used to calculate the bending deformation and stress changes of the plate structure. The force sensor array or piezoelectric ceramics can be used to obtain the pressure load and analyze the corresponding bending deformation and stress changes. The displacement deformation of the structure can be measured based on the lateral cascade target measurement method.

[0116] The deformation measurement methods listed above are all known technologies, and only some of the known deformation measurement methods are listed. It should be noted that the measurement methods that can realize the deformation data of the plate body or surface of the plate structure generated in different areas are applicable to the deformation measurement of the side panel 111 of the cooling structure 10 of the embodiment of the present application.

[0117] Furthermore, the deformation measurement of the side plate 111 of the cooling structure 10 of the embodiment of the present application can be a specific numerical measurement of the deformation of different regions and a change trend can be obtained based on a specific numerical analysis, so that the change trend meets the expansion trend of the corresponding cooled component. The specific numerical measurement includes but is not limited to the numerical measurement of continuous dense points or the numerical measurement of multiple extreme points.

[0118] Alternatively, the deformation measurement of the side panel 111 of the cooling structure 10 of the embodiment of the present application may also be to directly obtain the change trend of the entire deformation area, so that the change trend satisfies the corresponding expansion trend of the cooled part, including but not limited to obtaining the visualization trend of the entire deformation area through image processing technology or simulation generation technology.

[0119] In the cooling structure 10 provided in the embodiment of the present application, at least one side of the side plate 111 is provided with a cooling channel 113 for a cooling medium to flow through, and the cooling medium removes heat from the cooling component through contact with the side plate 111.

[0120] The side plate 111 can be deformed toward the side where the cooling channel 113 is located, and a deformable amount is generated. At least in one direction, the side plate 111 has different deformable amounts. The side surfaces of the cooled component in contact with the side plate 111 have different expansion degrees, and different expansion degrees generate different resistance forces on different areas of the side plate 111. Different deformation amounts on the side plate 111 provide expansion spaces required for different expansion degrees, allowing the cooled component to expand differently according to the internal stress, so that the service life of the cooled component remains normal or its service life is extended.

[0121] In some embodiments, a cooling channel 113 is configured on one side of the side plate 111 of the cooling structure 10 for the cooling medium to flow through, and the other side of the side plate 111 is provided for contacting the cooled component so that the cooling medium removes heat from the cooled component through contact.

[0122] The side plate 111 can be deformed toward the cooling channel 113 and produce a deformable amount. Different areas of the side plate 111 have different deformable amounts. Different areas of the cooled component that are in contact with the side plate 111 have different expansion degrees. Different expansion degrees produce different resistance forces on different areas of the side plate 111. Different deformation amounts of different areas on the side plate 111 provide expansion space required for different expansion degrees, allowing different areas of the cooled component to expand adaptively according to changes in internal stress, so that the service life of the cooled component remains normal or its service life is extended.

[0123] In some embodiments, the deformability of the side panel 111 decreases from the middle area of ​​the side panel 111 toward the edge area of ​​the side panel 111 .

[0124] The middle area of ​​the side plate 111 refers to the plate area in the middle of the side plate 111 , and the edge area of ​​the side plate 111 refers to the plate area outside the middle area and forming the outline of the side plate 111 .

[0125] For example, refer to Figure 5 The edge regions may be disposed on both sides of the middle region along a first direction, and / or the edge regions may be disposed on both sides of the middle region along a second direction, wherein the first direction is perpendicular to the second direction.

[0126] like Figure 4 As shown, a direction a from the middle area of ​​the side plate 111 to the edge area is shown, and the direction a can be any direction diverging from the middle area toward the edge area.

[0127] In some embodiments, in the first direction or in the second direction, the deformability of the side plate 111 decreases from the middle area to the edge area.

[0128] Generally, in order to improve cooling efficiency, the entire plate surface area of ​​the side plate 111 is in contact with the cooled component, so that the area of ​​the side plate 111 is maximized to improve cooling performance.

[0129] Furthermore, when the number of cooling bodies 11 and cooled parts is arranged one to one, the two adopt a contact method in which the cooled part covers the side plate 111, so that the middle area of ​​the side plate 111 contacts the middle area of ​​the surface of the cooled part, and the edge area of ​​the side plate 111 is located inside the edge of the surface or flush with it.

[0130] Alternatively, when the number of cooling bodies 11 is arranged in a one-to-many manner, that is, one cooling body 11 corresponds to cooling multiple cooled parts, the surfaces of the multiple cooled parts on the same side are in contact with the side plate 111, and the multiple cooled parts can be arranged in any array, and the edge area of ​​the side plate 111 is located on the inner side of or flush with the edge of the same side surface of the array.

[0131] For example, multiple cooled parts are arranged in sequence along the first direction, and the edge area on the side plate with a deformable amount difference with the middle area can be at least arranged on both sides of the middle area of ​​the side plate along the second direction and located on the inner side of the edges of the multiple cooled parts along the second direction.

[0132] In some embodiments, in the first direction or in the second direction, the deformability of the side plate 111 decreases gradually from the middle area to the edge area.

[0133] Gradient reduction means that the side plate 111 is divided into several different plate parts from the middle area to the edge area, and each plate part occupies a certain size in the direction from the middle area to the edge area, and the deformability of different plate parts in this direction decreases successively, and the deformability of different areas of the same plate part is roughly the same. Among them, in the direction from the middle area to the edge area, the sizes occupied by different plate parts can be the same or different, allowing different sizes of areas of the cooled part to expand to different degrees.

[0134] It should be noted that, in the direction from the middle area of ​​the side plate 111 to the edge area of ​​the side plate 111, the sizes occupied by different plate portions have no necessary relationship with the deformability they can provide. A plate portion occupies a larger size in the direction from the middle area of ​​the side plate 111 to the edge area of ​​the side plate 111, but can provide a smaller deformability. Alternatively, a plate portion occupies a smaller size in the direction from the middle area of ​​the side plate 111 to the edge area of ​​the side plate 111, but can provide a larger deformability.

[0135] Of course, in some other embodiments, the deformability of the side plate 111 can be continuously and gradually reduced from the middle area of ​​the side plate 111 to the edge area of ​​the side plate 111, which can be adapted to the situation where the expansion degree of the cooled component is continuously and gradually weakened from the middle area to the edge area.

[0136] Generally speaking, in actual situations, taking the square battery cell 101 as an example, the surface with the largest area on it is in contact with the side with the largest area of ​​the cooling body 11, and the middle area of ​​the surface with the largest area expands most obviously. From the middle area to the edge area, the degree of expansion shows an overall weakening trend, and the weakening trend is relatively gentle without obvious mutations. Therefore, its expansion trend can be understood as being continuously formed by different expansions of multiple different areas, and the expansion change pattern of multiple different areas is roughly weakening from the middle area to the edge area.

[0137] When designing the side panel 111, it is adapted to the expansion change rules of multiple different areas, and the deformable variable of the side panel 111 decreases in a gradient manner. That is, the deformable variables of different plate parts are designed regularly. In the direction from the middle area to the edge area, the sizes occupied by different plate parts on the side panel can be compared with the sizes occupied by different areas on the cooled part, which is more consistently in line with the expansion trend of the cooled part.

[0138] Generally, the expansion degree of the middle area of ​​the surface of the cooled part is the largest, and the expansion degree of the surface tends to decrease from the middle area to the edge area. In order to adapt to the expansion change trend of the surface of the cooled part, the side plate 111 is set so that the deformable amount decreases gradually from the middle area to the edge area, and the change trend of the deformable amount of the side plate tends to be consistent with the expansion change trend of the cooled part, so that the side plate 111 can further meet the expansion requirements of the cooled part.

[0139] Reference Figure 4 and Figure 6 As shown, in some embodiments, the side plate 111 includes a first deformable portion 1111, a second deformable portion 1112, and a third deformable portion 1113, which are sequentially arranged from the middle area of ​​the side plate 111 to the edge area of ​​the side plate 111. The deformable amount of the first deformable portion 1111 is greater than or equal to the deformable amount of the second deformable portion 1112, and the deformable amount of the second deformable portion 1112 is greater than the deformable amount of the third deformable portion 1113.

[0140] The first deformable portion 1111 refers to a plate portion located in the middle region of the side plate 111, and occupies a certain area in the middle region of the side plate 111. As far as possible, when the side plate 111 has a geometric center, it is most appropriate that the geometric center of the first deformable portion 1111 coincides with the geometric center of the side plate 111.

[0141] The third deformation portion 1113 refers to the plate portion of the edge area of ​​the side plate 111, which can be understood as the portion constituting the contour of the side plate 111. The function of the third deformation portion 1113 is to accept the resistance of the cooled component and at the same time keep the contour of the side plate 111 from being significantly changed by the cooled component.

[0142] The second deformation part 1112 refers to a plate part disposed between the first deformation part 1111 and the second deformation part 1112. In the direction from the middle area to the edge area, the first deformation part 1111, the second deformation part 1112 and the third deformation part 1113 each occupy a certain size, and the sizes occupied by different deformation parts may be the same or different.

[0143] For example, generally, with the center line L extending along the first direction of the side panel 111 as the boundary, taking one side of the center line L as an example, the first deformation portion 1111, the second deformation portion 1112 and the third deformation portion 1113 are successively away from the center line along the direction perpendicular to the center line L, and the size occupied by the first deformation portion 1111 is larger than the size occupied by the second deformation portion 1112, and also larger than the size occupied by the third deformation portion 1113, while the size occupied by the second deformation portion 1112 and the size occupied by the third deformation portion 1113 are approximately equal.

[0144] In some embodiments, Figure 4 As shown, the side plates 111 on both sides of the center line L can be roughly symmetrical, especially when a side plate 111 is adapted to multiple cooled parts, the multiple cooled parts are arranged in sequence along the center line L, and the first deformation part 1111, the second deformation part 1112 and the third deformation part 1113 provide deformation space for the cooled parts in a direction perpendicular to the center line, which not only meets the cooling needs of the multiple cooled parts, but also meets the expansion needs of the multiple cooled parts. Of course, within the size occupied by each deformation part, the deformable amount is roughly consistent, so that the overall trend decreases in a gradient.

[0145] Generally, in some embodiments, the cooling structure 10 has a middle area and an edge area. In the direction perpendicular to the center line L, the size occupied by the edge area is roughly equal to the size occupied by the middle area, and the two have a relatively obvious difference in deformability. The middle area of ​​the side plate 111 matches the middle area of ​​the cooled part, providing an adaptive deformable space for its expansion. The edge area of ​​the side plate 111 accepts the resistance of the cooled part and at the same time keeps the contour of the side plate 111 from being significantly changed by the cooled part.

[0146] Compared with the solution in which the deformability of the entire side plate 111 is uniformly set, the middle area and the edge area have a more obvious difference in deformability, which can meet the expansion requirements of the cooled component to a certain extent.

[0147] Based on the previous embodiment, in order to make the side panel 111 more finely adapt to the expansion requirements of the cooled component, the portion of the edge area close to the middle area in the previous embodiment (that is, the second deformation portion 1112) is designed to be softer, that is, compared with the portion far away from the middle area (that is, the third deformation portion 1113), its deformable amount is increased, and the deformable space it provides is increased, but it is still smaller than the deformable amount that the middle area (that is, the first deformation portion 1111) can provide, or it is made the same as the deformable amount of the middle area.

[0148] Compared with the previous embodiment, a second deformation portion 1112 is added between the first deformation portion 1111 and the third deformation portion 1113, and the deformable amount between the first deformation portion 1111 and the third deformation portion 1113 is increased, so that the side plate 111 is more adapted to the expansion requirements of the cooled part, further maintaining the service life of the cooled part, or extending its service life.

[0149] Similarly, in one embodiment, the design area of ​​the deformable amount of the first deformable portion 1111 is expanded, and the deformable amount of the expanded portion is between the deformable amount of the original first deformable portion 1111 and the third deformable portion 1113, so that the side plate 111 is more adapted to the expansion requirements of the cooled component.

[0150] The side plate 111 is divided into a plurality of different plate parts from the middle area to the edge area, and the deformable amounts of the different plate parts are distinguished and compared to make them change in a gradient. The change of the deformable amount is more refined and more suitable for the expansion requirements of the cooled component.

[0151] In some embodiments, the side plate 111 includes two second deformation portions 1112 and two third deformation portions 1113. The two second deformation portions 1112 are disposed on two opposite sides of the first deformation portion 1111, and the two third deformation portions 1113 are disposed on two sides of the two second deformation portions 1112 away from the first deformation portion 1111.

[0152] Considering that any two opposite sides of the middle area have edge areas, the second deformation part 1112 and the third deformation part 1113 are arranged on the opposite sides of the first deformation part 1111 to meet the expansion requirements of the cooled part in the entire contact area between the side plate 111 and the cooled part.

[0153] For example, in the case where the number of cooling bodies 11 and cooled parts is configured one to one, two second deformation parts 1112 are arranged on both sides of the first deformation part 1111 along the first direction, and two third deformation parts 1113 are arranged on both sides of the two second deformation parts 1112 away from the first deformation part 1111 along the first direction. Alternatively, two second deformation parts 1112 are arranged on both sides of the first deformation part 1111 along the second direction, and two third deformation parts 1113 are arranged on both sides of the two second deformation parts 1112 away from the first deformation part 1111 along the second direction. Alternatively, the first deformation part 1111 is respectively provided with second deformation parts 1112 on both sides along the first direction and the second direction to form an enclosure, and the third deformation part 1113 is arranged on the periphery of the second deformation part 1112 to form an enclosure.

[0154] For example, when the number of cooling bodies 11 and the number of cooled parts are configured in a one-to-many relationship, multiple cooled parts are arranged along the first direction, two second deformation parts 1112 are arranged on both sides of the first deformation part 1111 along the second direction, and two third deformation parts 1113 are arranged on both sides of the two second deformation parts 1112 away from the first deformation part 1111 along the second direction.

[0155] In some embodiments, the cooling structure 10 includes two side plates 111 , the two side plates 111 are disposed opposite to each other, and the cooling channel 113 is disposed between the two side plates 111 .

[0156] Both side plates 111 can be deformed toward each other, and cooled parts can be set on the opposite sides of the two side plates 111. The cooled parts on both sides are cooled through the cooling channels 113 between the two side plates 111, thereby improving the integration while meeting the expansion requirements of the cooled parts.

[0157] In some embodiments, the cooling structure 10 includes a plurality of partitions 112 disposed between two side plates 111. The partitions 112 extend along a first direction, and the plurality of partitions 112 are spaced apart along a second direction, and two adjacent partitions 112 and two side plates 111 are surrounded to form a cooling channel 113 extending along the first direction. In the second direction, from the middle area of ​​the side plate 111 to the edge area, the deformable amount of the side plate 111 decreases in a gradient manner.

[0158] The partition 112 refers to a plate structure having a larger ratio of extended area to thickness and a larger ratio of length to width, wherein the extended area refers to the area formed by the length and width combined.

[0159] Generally, the partition 112 and the side plate 111 are integrally formed, and the thickness of the partition 112, the connection angle between the partition 112 and the side plate 111, and the spacing between adjacent partitions 112 can all be used as design parameters of the deformability of the side plate 111. By changing these parameters, the deformability of the side plate 111 can be changed. Different plate portions of the side plate 111 along the second direction can form different deformability according to the differences in these parameters, and thus be configured to have a deformability change trend consistent with the expansion trend of the cooled component.

[0160] The plurality of partitions 112 are spaced apart along the second direction, and the deformable variable of the side plate 111 has a changing trend in the second direction. Compared with the deformable variable of the side plate 111 having a changing trend in the first direction, it is more conducive to using the plurality of partitions 112 to achieve different configurations of the deformable variable.

[0161] If the extension direction of the cooling channel 113 and the direction in which the deformable amount of the side plate 111 changes are both in the first direction, it is bound to increase the design difficulty of the cooling body 11. Therefore, in order to meet the cooling requirements of multiple cooled parts and provide corresponding deformation space according to the expansion requirements of the cooled parts, the cooling channel 113 is extended along the first direction and the deformable amount of the side plate 111 is changed along the second direction, which not only meets different requirements from different directions, but also reduces the design difficulty of the cooling body 11.

[0162] In some embodiments, in the second direction, from the middle area of ​​the side plate 111 to the edge area, the side plate 111 includes a first deformable portion 1111, a second deformable portion 1112, and a third deformable portion 1113. The deformable amount of the first deformable portion 1111 is greater than the deformable amount of the second deformable portion 1112, and the deformable amount of the second deformable portion 1112 is greater than the deformable amount of the third deformable portion 1113.

[0163] Different from the first direction, in the second direction, the side panel 111 is divided into multiple different plate parts from the middle area to the edge area, and the deformable variables of the three different deformable parts are distinguished and compared to make them change in a gradient. The change of the deformable variable in the second direction is more refined and more adapted to the expansion requirements of the cooled component in the second direction.

[0164] In some embodiments, the partition 112 includes a first partition 1121 connected to the first deformation portion 1111 at an angle, and a second partition 1122 connected to the second deformation portion 1112 at an acute angle, and the acute angle α between the second partition 1122 and the second deformation portion 1112 is smaller than the angle β between the first partition 1121 and the first deformation portion 1111.

[0165] Generally, from the edge area of ​​the side panel 111 to the middle area, the deformation resistance of the side panel 111 tends to weaken. The deformation resistance of the edge area is relatively high, which is beneficial to maintaining the contour shape of the cooling structure 10, and the deformation resistance of the middle area is relatively weak, which is beneficial to absorbing the resistance of the middle area where the cooled part has the largest expansion degree and deforming accordingly.

[0166] Generally, the third deformation portion 1113 has the highest anti-deformation capability, and the second deformation portion 1112 and the first deformation portion 1111 have substantially similar structures. Since the second deformation portion 1112 is close to the third deformation portion 1113, the third deformation portion 1113 strengthens the anti-deformation capability of the second deformation portion 1112. Therefore, even though the second deformation portion 1112 and the first deformation portion 1111 have substantially similar structures, the anti-deformation capability of the second deformation portion 1112 is much higher than the anti-deformation capability of the first deformation portion 1111 due to the assisting and reinforcing effect of the third deformation portion 1113.

[0167] In order to relatively weaken the anti-deformation capability of the second deformable portion 1112, increase the deformability of the second deformable portion 1112, meet the expansion requirements of the corresponding local area of ​​the cooled component, but still lower than the anti-deformation capability of the third deformable portion 1113 and higher than the first deformable portion 1111, the angle between the second partition 1122 and the second deformable portion 1112 is set to an acute angle, so that the acute angle formed by the second partition 1122 and the second deformable portion 1112 is smaller than the angle formed by the first partition 1121 and the first deformable portion 1111. The deformability of the second deformable portion 1112 increases, but is still smaller than the deformability of the first deformable portion 1111, and the first deformable portion 1111, the second deformable portion 1112 and the third deformable portion 1113 decrease in a gradient to meet the expansion change requirements of the surface of the cooled component.

[0168] In some embodiments, the first partition 1121 is connected to the first deformation portion 1111 at an acute angle.

[0169] The first partition 1121 forms an acute angle or a right angle with the first deformable part 1111. The smaller the angle, the more conducive it is to increase the deformability. Compared with a right angle, the first partition 1121 forms an acute angle with the first deformable part 1111, which is more conducive to increasing the deformability of the first deformable part 1111, satisfying the resistance of the middle area where the cooling part expands the most and deforming accordingly.

[0170] In some embodiments, the number of the second partitions 1122 is one or more, and the number of the first partitions 1121 is multiple. The distance between two adjacent second partitions 1122 is greater than the distance between two adjacent first partitions 1121, and / or the distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121.

[0171] In some embodiments, there are multiple first partitions 1121 , and there is only one second partition 1122 . The distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121 .

[0172] In some other embodiments, there are multiple first partitions 1121 and multiple second partitions 1122. In some embodiments, the distance between two adjacent second partitions 1122 is greater than the distance between two adjacent first partitions 1121, and the distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121.

[0173] In some other embodiments, the distance between two adjacent second partitions 1122 is greater than the distance between two adjacent first partitions 1121 , and the distance between adjacent second partitions 1122 and first partitions 1121 is equal to the distance between two adjacent first partitions 1121 .

[0174] In some other embodiments, the distance between two adjacent second partitions 1122 is equal to the distance between two adjacent first partitions 1121 , and the distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121 .

[0175] The spacing between the partitions 112 will affect the deformability of the deformable part. A larger spacing is more conducive to increasing the deformability. Through the above embodiment, changing the partition spacing can provide more deformability to meet the needs of cooled parts with higher expansion requirements.

[0176] Generally, the third deformation part 1113 has the highest anti-deformation capability, the second deformation part 1112 has the second highest anti-deformation capability, and the first deformation part 1111 has the weakest anti-deformation capability. Through the above scheme, the anti-deformation capability of the third deformation part 1113 and the second deformation part 1112 can be appropriately weakened, that is, the deformability can be increased, that is, the deformability of the third deformation part 1113 and the second deformation part 1112 can be appropriately increased while ensuring that the deformability of the third deformation part 1113 is the strongest.

[0177] In some cases, by improving the angle between the partition 112 and the side plate 111, for the cooled parts with higher expansion change requirements, simply improving the angle between the partition 112 and the deformation part is not enough to provide sufficient deformable space. Therefore, based on the improvement of the angle between the partition 112 and the deformation part, the improvement of the partition spacing is added to achieve sufficient adjustment of the overall deformable amount of the side plate 111.

[0178] The partition 112 includes one or more second partitions 1122 connected to the second deformation portion 1112, and a plurality of first partitions 1121 connected to the first deformation portion 1111. The distance between two adjacent second partitions 1122 is greater than the distance between two adjacent first partitions 1121, and / or the distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121.

[0179] Generally, the distance between any two adjacent second partitions 1122 is equal, and the distance between any two adjacent first partitions 1121 is equal.

[0180] In some embodiments, there are multiple first partitions 1121 , and there is only one second partition 1122 . The distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121 .

[0181] In some other embodiments, there are multiple first partitions 1121 and multiple second partitions 1122. In some embodiments, the distance between two adjacent second partitions 1122 is greater than the distance between two adjacent first partitions 1121, and the distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121.

[0182] In some other embodiments, the distance between two adjacent second partitions 1122 is greater than the distance between two adjacent first partitions 1121 , and the distance between adjacent second partitions 1122 and first partitions 1121 is equal to the distance between two adjacent first partitions 1121 .

[0183] In some other embodiments, the distance between two adjacent second partitions 1122 is equal to the distance between two adjacent first partitions 1121 , and the distance between adjacent second partitions 1122 and first partitions 1121 is greater than the distance between two adjacent first partitions 1121 .

[0184] In order to relatively weaken the deformation resistance of the second deformation part 1112, increase the deformability of the second deformation part 1112, meet the expansion requirements of the corresponding local area of ​​the cooled part, but still lower than the deformation resistance of the third deformation part 1113 and higher than the first deformation part 1111, set the spacing between two adjacent second partitions 1122 and / or the spacing between the adjacent second partitions 1122 and the first partition 1121 to a large spacing, and set the spacing between two adjacent first partitions 1121 to a small spacing, and the larger the spacing, the more conducive to increasing the deformability. The deformability of the second deformation part 1112 increases, but is still less than the deformability of the first deformation part 1111, and the first deformation part 1111, the second deformation part 1112 and the third deformation part 1113 decrease in a gradient to meet the expansion change requirements of the surface of the cooled part.

[0185] In some embodiments, the second partition 1122 is connected to the second deformation portion 1112 at an angle, the first partition 1121 is connected to the first deformation portion 1111 at an angle, and the angle α between the second partition 1122 and the second deformation portion 1112 is less than or equal to the angle β between the first partition 1121 and the first deformation portion 1111.

[0186] For the cooled parts with higher expansion change requirements, improving the spacing between the partitions 112 alone is not enough to provide sufficient deformable space. Therefore, based on the improvement of the spacing between the partitions 112, the angle between the partitions 112 and the deformable part is improved. The smaller the angle, the more conducive to increasing the deformability. By providing more deformability, the cooled parts with higher expansion requirements can be met. Among them, the angle between the first partition 1121 and the first deformable part 1111 and the angle between the second partition 1122 and the second deformable part 1112 can be acute angles or right angles.

[0187] In some embodiments, the thickness of the second separator 1122 is smaller than the thickness of the first separator 1121 , and / or the number of the second separators 1122 is smaller than the number of the first separators 1121 .

[0188] For cooled parts with higher expansion change requirements, improving the spacing between the partitions 112 and / or the angle between the partitions 112 and the deformation part is not enough to provide sufficient deformable space, and the thickness and / or number of the partitions 112 are increased. The smaller the thickness, the more conducive to increasing the deformability, and the smaller the number, the more conducive to increasing the deformability. By providing more deformability, the cooled parts with higher expansion requirements can be satisfied.

[0189] Of course, the implementation of the previous embodiment needs to ensure that the cooling body 11 has the required strength or rigidity. The partition 112 serves as the internal support of the cooling body 11, and its plate thickness will affect the overall frame of the cooling body 11, that is, it will affect the cooling body 11 to be roughly stable when clamped by the cooled part, and will not cause deformation beyond the preset value.

[0190] In some embodiments, in actual design, it is more inclined to make the plate thickness of the first deformation part 1111 the same as the plate thickness of the second deformation part 1112, the plate thickness of the second partition 1122 the same as the plate thickness of the first partition 1121, and the plate thickness of the third deformation part 1113 greater than the plate thickness of the first deformation part 1111 and the second deformation part 1112.

[0191] The plate thickness of the third deformation part 1113 is greater than that of the first deformation part 1111 and the second deformation part 1112, which is beneficial to maintaining the contour shape of the cooling structure 10. The plate thickness of the first deformation part 1111 is the same as that of the second deformation part 1112, and the plate thickness of the second partition 1122 is the same as that of the first partition 1121, which is beneficial to improve the adaptability of the angle between the partition 112 and the deformation part and the distance between the partitions 112 on the basis of consistent plate thickness without being affected by inconsistent plate thickness.

[0192] In some embodiments, the thickness of the third deformation portion 1113 gradually increases in a direction away from the second deformation portion 1112 , and two ends of the two third deformation portions 1113 of the two side plates 111 away from the second deformation portion 1112 are closed and connected.

[0193] The two third deformation parts 1113 are closed and connected at the two ends away from the second deformation part 1112, so as to improve the deformation resistance of the third deformation part 1113 and compensate for the weakening effect on the deformation resistance of the third deformation part 1113 caused by the acute angle between the second partition plate 1122 and the second deformation part 1112.

[0194] In some embodiments, the cooling structure 10 includes two side plates 111 disposed opposite to each other, and a plurality of partitions 112 disposed between the two side plates 111. The partitions 112 extend along a first direction, and the plurality of partitions 112 are spaced apart along a second direction, and two adjacent partitions 112 and the two side plates 111 are surrounded to form a cooling channel 113 extending along the first direction.

[0195] The side plate 111 can contact a plurality of cooled parts arranged along the first direction. In the second direction, from the middle area of ​​the side plate 111 to the edge area, the side plate 111 includes a first deformable portion 1111, a second deformable portion 1112 and a third deformable portion 1113. The deformable amount of the first deformable portion 1111 is greater than the deformable amount of the second deformable portion 1112, and the deformable amount of the second deformable portion 1112 is greater than the deformable amount of the third deformable portion 1113.

[0196] The partition 112 includes a first partition 1121 connected to the first deformation portion 1111 at an acute angle, and a second partition 1122 connected to the second deformation portion 1112 at an acute angle, and the acute angle between the second partition 1122 and the second deformation portion 1112 is smaller than the acute angle between the first partition 1121 and the first deformation portion 1111. There are multiple first partitions 1121, and there is one second partition 1122. The spacing between adjacent second partitions 1122 and first partitions 1121 is greater than the spacing between two adjacent first partitions 1121.

[0197] In the cooling structure 10 provided in the embodiment of the present application, the side surfaces where the side plate 111 and the cooled part contact each other are generally planes, for example, the cooled part may be a square battery 100. When the side surfaces where the side plate 111 and the cooled part contact each other are non-planes, for example, one is slightly concave and the other is slightly convex, the same principle can also be used to design a cooling body 11 that meets the requirements to achieve the cooling requirements of the cooled part.

[0198] Of course, the cooled part may also have a plane that can contact the side plate 111, and the other side surfaces may be non-planes. Alternatively, the side surfaces of the side plate 111 and the cooled part that contact each other are composed of multiple planes at an angle, for example, the side surface of the cooled part includes two planes at an angle, then the cooling body 11 can be clamped therein, and the side surface of the cooling body 11 can also be designed with a variable amount of deformation according to the principle of the embodiment of the present application.

[0199] In addition, it should be noted that the deformable amount of the first deformation part 1111 is greater than the deformable amount of the second deformation part 1112, the deformable amount of the second deformation part 1112 is greater than or equal to the deformable amount of the third deformation part 1113, and the side panel 111 can be constructed with the overall trend of the deformation, the values ​​of the multiple angles α between the multiple first partitions 1121 and the first deformation part 1111 can be the same or different, and the values ​​of the multiple angles β between the multiple second partitions 1122 and the second deformation part 1112 can be the same or different.

[0200] Reference Figures 3 to 6 As shown, another purpose of the embodiment of the present application is to provide a battery 100 , which includes a battery cell 101 and the cooling structure 10 as above, and at least one side of the side plate 111 is in contact with the side surface of the battery cell 101 .

[0201] In the battery 100 provided in the embodiment of the present application, at least one side of the side plate 111 is provided with a cooling channel 113 for the cooling medium to flow through, and at least one side of the side plate 111 contacts the battery cell 101, so that the cooling medium takes away the heat of the battery cell 101 through the contact. Different regions of the battery cell 101 in contact with the side plate 111 have different expansion degrees, and different expansion degrees produce different resistance forces on different regions of the side plate 111. Different deformation amounts of different regions on the side plate 111 provide expansion space required for different expansion degrees, allowing different regions of the battery cell 101 to expand adaptively according to changes in internal stress, so that the service life of the battery cell 101 remains normal or its service life is extended.

[0202] In some embodiments, the battery cell 101 is square in shape, and at least one side of the side plate is in contact with the largest surface of the battery cell 101 .

[0203] The square may be a cube or a cuboid, and the surface with the largest area may be one or more surfaces, and the side panels 111 provided in this embodiment may be used to meet the cooling requirements of the cooled component.

[0204] The expansion of the largest surface of the battery cell 101 has an obvious changing trend. The expansion degree is most obvious in the middle area. From the middle area to the edge area, the expansion degree tends to decrease. One side of the side plate 111 contacts the largest surface of the battery cell 101, which is more adapted to the expansion requirements of the largest surface.

[0205] In some embodiments, the cooling channel 113 extends along a first direction, the battery 100 includes a plurality of battery cells 101 arranged in sequence along the first direction, and a plurality of surfaces with the largest areas are in contact with the same side of the side plate. In a second direction perpendicular to the first direction, from the middle area of ​​the side plate 111 to the edge area, the deformable amount of the side plate 111 decreases in a gradient.

[0206] The extension direction of the cooling channel 113 is consistent with the arrangement direction of the multiple battery cells 101, and the cooling structure 10 can efficiently cool the multiple battery cells 101. In the second direction, the side plate 111 is arranged from the middle area to the edge area so that the deformable amount decreases gradually, meeting the expansion requirements of the largest surface area of ​​each battery cell 101 arranged along the first direction.

[0207] Reference Figure 7 As shown, another purpose of the embodiment of the present application is to provide an electric device 1000, and the electric device 1000 includes the battery 100 as described above.

[0208] The electrical device 1000 provided in the embodiment of the present application is applied with the battery 100 provided in the embodiment of the present application, and the battery 100 provided in the embodiment of the present application is applied with the cooling structure 10 provided in the present application. The cooling structure 10 allows different areas of the battery 100 to expand adaptively according to changes in internal stress, and is not likely to cause adverse inhibition on the expansion of the battery 100, which is beneficial to improving the safety of the battery 100 and the safety of the electrical device 1000.

[0209] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A cooling structure, characterized in that: The cooling structure comprises a side plate and a cooling channel arranged on at least one side of the side plate; The side plate is configured to be deformable toward the side where the cooling channel is located and to generate a deformable amount, and the side plate has different deformable amounts in at least one direction.

2. The cooling structure according to claim 1, characterized in that: From the middle area of ​​the side plate toward the edge area of ​​the side plate, the deformability of the side plate decreases.

3. The cooling structure according to claim 1 or 2, characterized in that: The side plate comprises a first deformation portion, a second deformation portion and a third deformation portion which are sequentially arranged from the middle area to the edge area of ​​the side plate; The deformable amount of the first deformable portion is greater than or equal to the deformable amount of the second deformable portion, and the deformable amount of the second deformable portion is greater than the deformable amount of the third deformable portion.

4. The cooling structure according to claim 3, characterized in that: The side plate includes two of the second deformation parts and two of the third deformation parts; The two second deformation parts are arranged on two opposite sides of the first deformation part, and the two third deformation parts are arranged on two sides of the two second deformation parts away from the first deformation part.

5. The cooling structure according to any one of claims 1 to 4, characterized in that: The cooling structure comprises two side plates, the two side plates are arranged opposite to each other, and the cooling channel is arranged between the two side plates.

6. The cooling structure according to claim 5, characterized in that: The cooling structure comprises a plurality of partitions disposed between the two side plates; The partition plate extends along the first direction, the plurality of partition plates are arranged at intervals along the second direction, and two adjacent partition plates and two side plates are combined to form the cooling channel extending along the first direction; In the second direction, from the middle area to the edge area of ​​the side plate, the deformability of the side plate decreases; wherein the first direction is perpendicular to the second direction.

7. The cooling structure according to claim 6, characterized in that: In the second direction, from the middle area of ​​the side plate to the edge area, the side plate includes a first deformation portion, a second deformation portion and a third deformation portion; The deformable amount of the first deformable portion is greater than the deformable amount of the second deformable portion, and the deformable amount of the second deformable portion is greater than the deformable amount of the third deformable portion.

8. The cooling structure according to claim 7, characterized in that: The partition includes a first partition connected to the first deformation portion at an angle, and a second partition connected to the second deformation portion at an acute angle, wherein the acute angle between the second partition and the second deformation portion is smaller than the angle between the first partition and the first deformation portion.

9. The cooling structure according to claim 8, characterized in that: The first partition is connected to the first deformation portion at an acute angle.

10. The cooling structure according to claim 8 or 9, characterized in that: The number of the second partitions is one or more, and the number of the first partitions is plural; The distance between two adjacent second partitions is greater than the distance between two adjacent first partitions; And / or, the distance between adjacent second partitions and first partitions is greater than the distance between two adjacent first partitions.

11. The cooling structure according to claim 7, characterized in that: The partition includes a plurality of first partitions connected to the first deformation portion, and one or more second partitions connected to the second deformation portion; The distance between two adjacent second partitions is greater than the distance between two adjacent first partitions; And / or, the distance between adjacent second partitions and first partitions is greater than the distance between two adjacent first partitions.

12. The cooling structure according to claim 11, characterized in that: The first partition is connected to the first deformation portion at an angle, the second partition is connected to the second deformation portion at an angle, and the angle between the second partition and the second deformation portion is less than or equal to the angle between the first partition and the first deformation portion.

13. The cooling structure according to any one of claims 8 to 12, characterized in that: The thickness of the second separator is smaller than the thickness of the first separator; And / or, the number of the second partitions is less than the number of the first partitions.

14. The cooling structure according to any one of claims 8 to 12, characterized in that: The thickness of the first deformation portion is the same as that of the second deformation portion, the thickness of the second partition is the same as that of the first partition, and the thickness of the third deformation portion is greater than that of the first deformation portion and the second deformation portion.

15. The cooling structure according to claim 14, characterized in that: The plate thickness of the third deformation portion gradually increases in a direction away from the second deformation portion, and two ends of the two third deformation portions of the two side plates away from the second deformation portion are closed and connected.

16. A battery, characterized in that: The battery comprises a battery cell, and a cooling structure according to any one of claims 1 to 15, wherein at least one side of the side plate is in contact with a side surface of the battery cell.

17. The battery according to claim 16, characterized in that: The battery cell is in a square shape, and the at least one side is in contact with a surface with the largest area of ​​the battery cell.

18. The battery according to claim 16, characterized in that: The cooling channel extends along a first direction, the battery comprises a plurality of battery cells sequentially arranged along the first direction, and a plurality of surfaces with the largest areas are in contact with the same side of the side plate; In a second direction perpendicular to the first direction, from the middle area of ​​the side plate to the edge area, the deformable amount of the side plate decreases 。 19. An electrical device, characterized in that: The electrical device comprises a battery as claimed in any one of claims 16 to 18.

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