Heat exchange assembly, battery and electric device

Abstract

Disclosed in the present application are a heat exchange assembly, a battery and an electric device. The heat exchange assembly is provided with a heat exchange channel, an inflow port and an outflow port, wherein the heat exchange channel comprises an inflow section, an outflow section, and a heat exchange section for communicating the inflow section and the outflow section; the inflow port is in communication with the inflow section, in order to enable a heat exchange liquid to flow into the inflow section from the inflow port; and the outflow port is in communication with the outflow section, in order to enable the heat exchange liquid to flow out of the outflow section from the outflow port. When the heat exchange assembly is in a heat exchange state, the inflow section is lower than the outflow section.

Description

Heat exchange components, batteries and electrical devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 14, 2023, with application number 202322180744.3 and invention name “Heat exchange component, battery and electrical device”, the entire contents of which are incorporated by reference into this application. Technical Field

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

[0003] When the temperature is too high or too low, the battery cannot work properly and may even cause safety accidents. Therefore, the battery temperature needs to be controlled.

[0004] In some cases, the battery uses a heat exchange component to exchange heat between the battery cells inside the battery. The heat exchange component is usually provided with a heat exchange channel. The heat exchange liquid flows in the heat exchange channel and exchanges heat with the battery cells, thereby achieving temperature control of the battery. However, during actual use, the bubbles in the heat exchange liquid are difficult to discharge in the heat exchange channel and stay for a long time. The bubbles can easily cause local discharge, affecting the reliability of battery use.

[0005] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art.

[0006] Application Contents

[0007] The purpose of the embodiments of the present application is to provide a heat exchange component, a battery and an electrical device, including but not limited to solving the problem in the related art that bubbles in the heat exchange component cause local discharge and affect the reliability of battery use.

[0008] The technical solution adopted in the embodiment of this application is:

[0009] In a first aspect, a heat exchange component is provided, which is constructed with a heat exchange channel, an inlet and an outlet; the heat exchange channel includes an inlet section, an outflow section and a heat exchange section for connecting the inflow section and the outflow section, the inlet is connected to the inflow section so that the heat exchange liquid flows from the inlet into the inflow section, and the outlet is connected to the outflow section so that the heat exchange liquid flows out of the outflow section from the outlet; wherein, when the heat exchange component is in a heat exchange state, the inflow section is set lower than the outflow section.

[0010] The heat exchange component of the embodiment of the present application is arranged such that the inflow section is lower than the outflow section when the heat exchange component is in the heat exchange state, so that the heat exchange liquid flows into the heat exchange section from the lower inflow section and then flows out through the higher outflow section. The heat exchange liquid flows upward during the flow in the heat exchange channel, and the upward flow is conducive to accelerating the discharge of bubbles in the heat exchange liquid, thereby reducing the residence time of bubbles in the heat exchange channel, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery.

[0011] In one embodiment, the inflow section has a first end and a second end, the first end is set lower than the second end, the inflow section extends obliquely from the first end toward the second end, and the position where the inflow section is connected to the inlet is closer to the first end than the position where the inflow section is connected to the heat exchange section; and / or, the outflow section has a third end and a fourth end, the third end is set lower than the fourth end, the inflow section extends obliquely from the third end toward the fourth end, and the position where the outflow section is connected to the outlet is closer to the fourth end than the position where the outflow section is connected to the heat exchange section.

[0012] By adopting the technical solution of this embodiment, the heat exchange liquid flows upward in the heat exchange channel, which is conducive to accelerating the discharge of bubbles and reducing the residence time of bubbles in the heat exchange channel, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of battery use.

[0013] In one embodiment, the heat exchange assembly includes a supporting surface for supporting the battery cell, and the distance between the inflow section and the supporting surface is greater than the distance between the outflow section and the supporting surface.

[0014] By adopting the technical solution of this embodiment, the distance between the inflow section and the bearing surface is greater than the distance between the outflow section and the bearing surface, so that the inflow section can be lower than the outflow section, which is conducive to the discharge of bubbles.

[0015] In one embodiment, the bearing surface is a horizontal surface.

[0016] By adopting the technical solution of this embodiment, the bearing surface is set horizontally, and the battery cell can be placed horizontally on the bearing surface. The bearing surface is evenly stressed and has a good bearing effect, which is beneficial to improving the reliability of the battery cell. In addition, there is usually a material such as thermal conductive silicone between the bearing surface and the battery cell. The bearing surface is horizontal, so the thermal conductive silicone is laid horizontally on the bearing surface, and it is not easy to have uneven thickness due to its own gravity flow, so that the thermal conductive silicone is evenly spread between the battery cell and the bearing surface, which is beneficial to improving the heat exchange effect of the battery cell.

[0017] In one embodiment, the heat exchange section includes a first side portion and a second side portion that are oppositely distributed along a first direction, the first side portion is arranged lower than the second side portion, the first side portion is connected to the inflow section, and the second side portion is connected to the outflow section.

[0018] By adopting the technical solution of this embodiment, in the first direction, the heat exchange liquid flows into the heat exchange section from the first side portion at a lower position, and then flows out from the second side portion at a higher position, so that the heat exchange liquid has an upward flow process, which is conducive to accelerating the discharge of bubbles and reducing the residence time of bubbles in the heat exchange section, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of battery use.

[0019] In one embodiment, the heat exchange section extends obliquely from the first side portion toward the second side portion, and the first direction is the direction from the first side portion toward the second side portion.

[0020] By adopting the technical solution of this embodiment, the heat exchange liquid flows obliquely upward along the first direction in the heat exchange section, which is conducive to accelerating the discharge of bubbles and reducing the residence time of bubbles in the heat exchange section, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of battery use; in addition, the heat exchange section extends obliquely, making the flow channel structure of the heat exchange section simple and convenient for processing and manufacturing.

[0021] In one embodiment, in the first direction, the angle between the heat exchange section and the horizontal plane is α, where 1°≤α≤15°.

[0022] By adopting the technical solution of this embodiment, the design of 1°≤α≤15° makes the inclination angle of the heat exchange section along the first direction appropriate. On the basis of being conducive to the discharge of bubbles, it can also make the heat exchange component have a suitable thickness, which is conducive to improving the heat exchange effect of the heat exchange component, and is also conducive to reducing material redundancy and reducing production costs.

[0023] In one embodiment, 5°≤α≤10°.

[0024] By adopting the technical solution of this embodiment, the design of 1°≤α≤15° makes the inclination angle of the heat exchange section more appropriate, which can better discharge bubbles. In addition, it can also make the heat exchange component have a more reasonable thickness, which is more conducive to improving the heat exchange effect of the heat exchange component, reducing material redundancy, and reducing production costs.

[0025] In one embodiment, the heat exchange section has a third side and a fourth side relatively distributed along the second direction, the third side is arranged lower than the fourth side, the inflow section is arranged close to the third side, the outflow section is arranged close to the fourth side, and the first direction intersects with the second direction.

[0026] By adopting the technical solution of this embodiment, in actual use, the heat exchange assembly typically needs to exchange heat for multiple battery cells, requiring a larger heat exchange area. Consequently, the heat exchange section typically needs to be larger. The heat exchange liquid flows upward in both the first and second directions, facilitating the discharge of bubbles and reducing their residence time within the heat exchange section. This reduces the risk of bubble-induced partial discharge and improves battery reliability. Furthermore, the inclined extension of the heat exchange section simplifies its flow path structure and facilitates fabrication.

[0027] In one embodiment, the heat exchange section extends obliquely from the third side toward the fourth side, and the second direction is the direction from the third side toward the fourth side.

[0028] By adopting the technical solution of this embodiment, the heat exchange liquid flows upward at an angle in both the first and second directions, ensuring that the heat exchange liquid always flows upward at all locations. This facilitates the discharge of bubbles and reduces the duration of bubble retention within the heat exchange section, thereby reducing the risk of bubble-induced partial discharge and improving battery reliability. Furthermore, the inclined extension of the heat exchange section simplifies the flow channel structure and facilitates fabrication.

[0029] In one embodiment, in the second direction, the angle between the heat exchange section and the horizontal plane is β, where 1°≤β≤15°.

[0030] By adopting the technical solution of this embodiment, the design of 1°≤β≤15° makes the inclination angle of the heat exchange section in the second direction appropriate. On the basis of being conducive to the discharge of bubbles, it can also make the heat exchange component have a suitable thickness, which is conducive to improving the heat exchange effect of the heat exchange component, reducing material redundancy, and reducing production costs.

[0031] In one embodiment, 5°≤β≤10°.

[0032] By adopting the technical solution of this embodiment, the design of 1°≤β≤15° makes the inclination angle of the heat exchange section more appropriate, which can better discharge bubbles. In addition, it can also make the heat exchange component have a more reasonable thickness, which is more conducive to improving the heat exchange effect of the heat exchange component, reducing material redundancy, and reducing production costs.

[0033] In one embodiment, the heat exchange section includes a first confluence sub-segment, a second confluence sub-segment, and a plurality of heat exchange sub-segments located between the first confluence sub-segment and the second confluence sub-segment; the first confluence sub-segment and the second confluence sub-segment are extended along the second direction, and the plurality of heat exchange sub-segments are arranged at intervals along the second direction, and the two ends of each heat exchange sub-segment are respectively connected to the first confluence sub-segment and the second confluence sub-segment, the inflow section is connected to the first confluence sub-segment, and the outflow section is connected to the second confluence sub-segment.

[0034] By adopting the technical solution of this embodiment, the heat exchange section adopts a structure of multiple sub-segments, which can increase the heat exchange area between the heat exchange liquid and the heat exchange component, which is beneficial to improving the heat exchange effect. In addition, the arrangement of the first confluence sub-segment, the second confluence sub-segment and the multiple heat exchange sub-segments is simple, which reduces the residence time of bubbles in the heat exchange section, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of battery use.

[0035] In one embodiment, each heat exchange sub-section is extended along the first direction.

[0036] By adopting the technical solution of this embodiment, the heat exchange sub-segment extends upward at an angle along the first direction, which is conducive to the discharge of bubbles; in addition, the channel design of the heat exchange sub-segment is simple, which is also conducive to accelerating the discharge of bubbles, and is also conducive to reducing the difficulty of manufacturing the heat exchange component and improving production efficiency.

[0037] In one embodiment, the first direction and the second direction are perpendicular.

[0038] By adopting the technical solution of this embodiment, the channel design of the heat exchange section is regular and simple, which is conducive to accelerating the discharge of bubbles, and the flow distribution of the heat exchange liquid is regular and simple, and the heat exchange between battery cells is uniform, which is conducive to reducing the temperature difference between battery cells, thereby improving the reliability of battery use.

[0039] In one embodiment, the heat exchange assembly includes a supporting surface for supporting the battery cell, and the projection of the extension direction of the heat exchange sub-segment on the supporting surface is parallel to the long side of the battery cell.

[0040] By adopting the technical solution of this embodiment, the heat exchange liquid exchanges heat with the battery cells in each row in turn during the flow of the heat exchange sub-segment, so that the heat exchange effect received by the battery cells in each row is not much different, thereby reducing the temperature difference between the battery cells in adjacent rows, which is beneficial to improving the reliability of the battery.

[0041] In one embodiment, the first bus segment has a fifth end and a sixth end, the second bus segment has a seventh end and an eighth end, the fifth end is set lower than the sixth end, the seventh end is set lower than the eighth end, the fifth end is connected to the inflow section, and the eighth end is connected to the outflow section.

[0042] By adopting the technical solution of this embodiment, the heat exchange liquid always flows upward in the heat exchange section, which is more conducive to the discharge of bubbles, reduces the risk of local discharge, and improves the reliability of battery use. In addition, the path of the heat exchange liquid flowing through any heat exchange sub-section from the inflow section to the outflow section is not much different, which is conducive to the uniformity of heat exchange between battery cells, helps to reduce the temperature difference between battery cells, and thus improves the reliability of battery use.

[0043] In one embodiment, the flow areas of the plurality of heat exchange subsections are the same.

[0044] By adopting the technical solution of this embodiment, the flow areas of the heat exchange sub-segments are the same, and the heat exchange liquid is evenly distributed in multiple heat exchange sub-segments, which is beneficial to improving the heat exchange uniformity of the battery cells, reducing the temperature difference between the battery cells, and thus improving the reliability of the battery.

[0045] In one embodiment, the flow area of ​​the first busbar segment and the flow area of ​​the second busbar segment are the same.

[0046] By adopting the technical solution of this embodiment, the flow area of ​​the first confluence segment and the flow area of ​​the second confluence segment are the same, which is beneficial to improving the uniformity of the distribution of the heat exchange liquid in the heat exchange channel, improving the heat exchange uniformity of the battery cells, reducing the temperature difference between the battery cells, and thus improving the reliability of the battery.

[0047] In one embodiment, the flow area of ​​the first busbar sub-segment and the flow area of ​​the second busbar sub-segment are equal to the flow area of ​​the heat exchange sub-segment.

[0048] In one embodiment, the flow area of ​​the first busbar sub-segment and the flow area of ​​the second busbar sub-segment are equal to the flow area of ​​the heat exchange sub-segment.

[0049] By adopting the technical solution of this embodiment, the cross-sectional area of ​​the flow channel of the heat exchange liquid flowing through any heat exchange sub-segment from outflow section to outflow section is the same or has little difference, and the heat exchange liquid is better distributed uniformly in the heat exchange channel, which is beneficial to improving the heat exchange uniformity of the battery cells, reducing the temperature difference between the battery cells, and thus improving the reliability of the battery.

[0050] In one embodiment, the flow rate of the heat exchange sub-segment is Q1, the flow area of ​​the heat exchange sub-segment is S1, 0.5m / s≤Q1 / S1≤5m / s; and / or, the flow rate of the first confluence sub-segment is Q2, the flow area of ​​the first confluence sub-segment is S2, 0.5m / s≤Q2 / S2≤5m / s; and / or, the flow rate of the second confluence sub-segment is Q3, the flow area of ​​the second confluence sub-segment is S3, 0.5m / s≤Q3 / S3≤5m / s.

[0051] Through the technical solution of this embodiment, the heat exchange liquid can pass through the heat exchange section at a faster speed, thereby taking away the heat of the battery cell more quickly, so that the battery cell has a good heat exchange effect.

[0052] In one embodiment, the flow area of ​​the heat exchange subsection is S1, 0.00001m 2 ≤S1≤0.001m 2 and / or, the flow area of ​​the first confluence sub-segment is S2, 0.00001m 2 ≤S2≤0.001m 2and / or, the flow area of ​​the second confluence sub-segment is S3, 0.00001m 2 ≤S3≤0.001m 2 .

[0053] By adopting the technical solution of this embodiment, the heat exchange liquid can pass through the heat exchange section at a faster speed, so that the battery cell has a good heat exchange effect, which is beneficial to improving the reliability of the battery.

[0054] In one embodiment, the heat exchange assembly includes a first heat exchange member and a second heat exchange member, the first heat exchange member has a first surface, and the second heat exchange member has a second surface; the first surface is constructed with a first groove, the second surface is sealed to the first surface and seals the opening of the first groove, and the second surface and the groove wall of the first groove are jointly arranged to form a heat exchange channel.

[0055] By adopting the technical solution of this embodiment, a first groove is formed on the first surface of the first heat exchange element, and the second surface of the second heat exchange element is sealed and adhered to the first surface, so that the heat exchange channel can be sealed. The heat exchange channel is simple to manufacture, and the overall structure of the heat exchange component is simple, which is conducive to reducing production costs.

[0056] In one embodiment, the second surface is a plane, or a second groove is configured on the second surface, and the first groove and the second groove are butted against each other so that the groove wall of the first groove and the groove wall of the second groove are jointly enclosed to form a heat exchange channel.

[0057] By adopting the technical solution of this embodiment, the heat exchange channel can adopt a variety of structural forms, and the production flexibility of the heat exchange channel is good.

[0058] In one embodiment, the first surface extends obliquely upward from the inflow section toward the outflow section.

[0059] By adopting the technical solution of this embodiment, the heat exchange liquid always flows upward at an angle during the process of flowing from the inflow section to the outflow section, which is beneficial to the discharge of bubbles in the heat exchange liquid, helps to reduce the risk of local discharge, helps to improve the reliability of battery use, and also facilitates the processing and production of the heat exchange channel.

[0060] In one embodiment, the inlet and outlet are arranged on the side of the heat exchange component close to the battery cell; or, the outlet is arranged on the side of the heat exchange component close to the battery cell, and the inlet is arranged on the side of the heat exchange component away from the battery cell.

[0061] By adopting the technical solution of this embodiment, the positions of the inlet and the outlet can be flexibly set to facilitate processing and manufacturing.

[0062] In a second aspect, a battery is provided, comprising the heat exchange assembly according to the above embodiment.

[0063] In a third aspect, an electrical device is provided, comprising a battery according to the above embodiment.

[0064] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative work.

[0066] FIG1 is a schematic structural diagram of a vehicle provided in one embodiment of the present application.

[0067] FIG2 is a schematic structural diagram of a battery provided in another embodiment of the present application.

[0068] FIG3 is a schematic structural diagram of a battery cell provided in yet another embodiment of the present application.

[0069] FIG4 is an exploded schematic diagram of the battery cell shown in FIG3 .

[0070] FIG5 is a first structural diagram of a heat exchange assembly provided in another embodiment of the present application.

[0071] FIG6 is an exploded schematic diagram of the heat exchange assembly shown in FIG5 .

[0072] FIG7 is a schematic diagram of the top structure of the heat exchange assembly shown in FIG5 .

[0073] FIG8 is a cross-sectional view taken along line AA in FIG7 .

[0074] FIG9 is a partial enlarged view of point E in FIG8 .

[0075] FIG10 is a cross-sectional view taken along line BB in FIG7 .

[0076] FIG11 is a partial enlarged view of point F in FIG10 .

[0077] FIG12 is a cross-sectional view taken along line CC in FIG7 .

[0078] FIG13 is a cross-sectional view taken along line DD in FIG7.

[0079] FIG14 is a schematic structural diagram of the first heat exchange element shown in FIG6 .

[0080] FIG15 is a schematic structural diagram of the second heat exchange element shown in FIG6 .

[0081] FIG16 is a schematic structural diagram of the heat exchange assembly and the battery cell shown in FIG5 assembled together.

[0082] FIG17 is a cross-sectional view of a heat exchange assembly provided in another embodiment of the present application along line AA in FIG7 .

[0083] FIG18 is a schematic structural diagram of a heat exchange assembly provided in another embodiment of the present application.

[0084] Among them, the reference numerals in the figures are:

[0085] 1000, vehicle; 1100, battery; 1200, controller; 1300, motor; 10, housing; 11, first part; 12, second part; 20, battery cell; 21, end cap; 211, electrode terminal; 212, pressure relief mechanism; 22, housing; 221, long side; 222, short side; 23, electrode assembly; 100, heat exchange assembly; 110, first heat exchange element; 111, first pipe interface; 1111, inlet; 112, first groove; 1121, first inflow trough section; 1122, first outflow trough section; 1123, first heat exchange trough section; 11231, first confluence sub-trough section; 11232, second confluence sub-trough section; 11233, first heat exchange sub-trough section; 113, First surface; 114, first protrusion; 115, first connecting channel; 120, second heat exchange member; 121, second pipe interface; 1211, outflow port; 122, second groove; 1221, second inflow slot section; 1222, second outflow slot section; 1223, second heat exchange slot section; 12231, third confluence slot section; 12232, fourth confluence slot section; 12233, second heat exchange sub-slot section; 123, second surface; 124, second protrusion; 125, second connecting channel; 126, bearing surface; 130, heat exchange channel; 131, inflow section; 132, outflow section; 133, heat exchange section; 1331, first confluence sub-segment; 1332, second confluence sub-segment; 1333, heat exchange sub-segment. DETAILED DESCRIPTION

[0086] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0087] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0088] In the description of the embodiments of this application, the technical terms "first," "second," etc., are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance, or to implicitly specify the quantity, specific order, or primary-secondary relationship of the technical features indicated. Therefore, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features.

[0089] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments in any suitable manner.

[0090] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0091] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more (including two groups), and "multiple sheets" refers to two or more (including two sheets). "Several" means one or more, unless otherwise specifically defined.

[0092] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0093] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0094] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0095] In this application, for the convenience of description, the Z-axis in the accompanying drawings represents the up and down direction, the positive direction of the Z-axis represents up, and the negative direction of the Z-axis represents down; the Y-axis in the accompanying drawings represents the front and back direction, the positive direction of the Y-axis represents back, and the negative direction of the Y-axis represents front; the X-axis in the accompanying drawings represents the left and right direction, the positive direction of the X-axis represents right, and the negative direction of the X-axis represents left.

[0096] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0097] Typically, in high-voltage environments, bubbles in liquid pipelines can easily cause partial discharge (PD), shortening the pipeline's lifespan and even causing damage and liquid leakage, leading to accidents. However, the voltage levels in conventional energy storage batteries are relatively low, and the risk of partial discharge caused by bubbles has not been addressed. With the development of high-voltage direct-mounted energy storage power station technology, the voltage levels in the battery environment will increase, increasing the risk of partial discharge.

[0098] The battery includes multiple battery cells and a heat exchange assembly, and the multiple battery cells are arranged on the heat exchange assembly; a heat exchange channel is provided in the heat exchange assembly, and the heat exchange liquid exchanges heat with the battery cells while flowing in the heat exchange channel, thereby realizing temperature control of the battery cells; if the temperature of the battery cells is too high, the heat exchange liquid absorbs the heat of the battery cells, thereby lowering the temperature of the battery cells; if the temperature of the battery cells is too low, the heat exchange liquid heats the battery cells, thereby raising the temperature of the battery cells. In this way, the temperature of the battery can be controlled within a preset range to improve the reliability of the battery.

[0099] In actual use, bubbles are easily generated in the heat exchange liquid. The conductivity of the heat exchange liquid is lower than that of the bubbles. For example, the heat exchange liquid can be deionized water, and the conductivity of deionized water is less than or equal to 0.3*10 -6 s / cm, while the conductivity of air is approximately 10 -1 s / cm. The electrical conductivity of air is tens of thousands of times greater than that of deionized water. Therefore, the longer bubbles remain in the heat exchange channel, the more likely they are to cause partial discharge, leading to damage and failure of the heat exchange component. Once bubbles enter the heat exchange channel, their density is lower than that of the heat exchange liquid, so they tend to remain in the upper portion of the channel, making them difficult to expel. The longer bubbles remain in the channel, the more likely they are to cause partial discharge, thus affecting battery reliability. However, the structural design of the heat exchange component in related technologies fails to account for the risk of partial discharge caused by bubbles in the channel.

[0100] In order to alleviate the problem of bubbles staying in the heat exchange channel for a long time, an embodiment of the present application provides a heat exchange component. When the heat exchange component is in the heat exchange state, the inflow section of the heat exchange channel is set lower than the outflow section of the heat exchange channel. The heat exchange liquid flows into the heat exchange channel from the lower inflow section, and then flows out from the higher outflow section, so that the heat exchange liquid flows upward when flowing, and the bubbles in the heat exchange liquid also flow upward. This is conducive to accelerating the discharge of bubbles out of the heat exchange channel, reducing the residence time in the heat exchange channel, reducing the risk of local amplification caused by bubbles, and improving the reliability of battery use.

[0101] The heat exchange assembly, battery, and electrical device using the battery as a power source disclosed in the embodiments 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-powered vehicle, an electric car, a ship, a spacecraft, and the like. The electric toy may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the spacecraft may include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0102] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0103] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1100 is provided inside the vehicle 1000, and the battery 1100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 1100 can be used to power the vehicle 1000. For example, the battery 1100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery 1100 to power the motor 1300, for example, for starting, navigating and driving the vehicle 1000.

[0104] In some embodiments of the present application, the battery 1100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0105] Referring to Figure 2 , an embodiment of a battery 1100 includes a housing 10 and battery cells 20, with the battery cells 20 housed within the housing 10. The housing 10 provides a storage space for the battery cells 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for the battery cells 20. The second portion 12 can be a hollow structure with one end open, and the first portion 11 can be a plate-like structure, overlapping the open side of the second portion 12, so that the first and second portions 11 and 12 together define a storage space. Alternatively, the first and second portions 11 and 12 can each be a hollow structure with one end open, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the housing 10 formed by the first and second portions 11 and 12 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0106] In the battery 1100 , there may be multiple battery cells 20 , and the multiple battery cells 20 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are connected in both series and in parallel.

[0107] In one embodiment, multiple battery cells 20 may be directly connected in series, parallel, or hybrid, and the entire battery cell 20 may then be housed within the housing 10. Alternatively, the battery 1100 may be constructed by first connecting multiple battery cells 20 in series, parallel, or hybrid to form a battery module, which is then connected in series, parallel, or hybrid to form a complete battery module, and then housed within the housing 10. The battery 1100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0108] Each battery cell 20 may be a secondary battery or a primary battery, and may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0109] As another embodiment of the battery 1100 , the battery 1100 may not include the housing 10 , but may be assembled into an electrical device by electrically connecting a plurality of battery cells 20 and forming a whole with necessary fixing structures.

[0110] Please refer to Figures 3 and 4. Figure 3 is a schematic diagram of the structure of a battery cell 20 provided in some embodiments of the present application, and Figure 4 is a schematic diagram of the exploded structure of a battery cell 20 provided in some embodiments of the present application. A battery cell 20 is the smallest unit that makes up a battery. As shown in Figure 3, a battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0111] The end cap 21 is a component that covers the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cap 21 can be made of a material with a certain degree of hardness and strength (such as an aluminum alloy). This prevents the end cap 21 from deforming when subjected to compression or collision, thereby enhancing the structural strength and safety of the battery cell 20. Functional components such as electrode terminals 211 can be provided on the end cap 21. The electrode terminals 211 can be used to electrically connect to the electrode assembly 23 to output or input electrical energy to the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism 212 for relieving internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The end cap 21 can also be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any specific limitations on this. In some embodiments, an insulating member may be provided inside the end cap 21 to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0112] The housing 22 is a component that cooperates with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can be used to accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and end cap 21 can be separate components. An opening can be provided in the housing 22, and the end cap 21 is placed over the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and housing 22 can be integrated. Specifically, the end cap 21 and housing 22 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 22 needs to be enclosed, the end cap 21 is placed over the housing 22. The housing 22 can have a variety of shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, or a hexagonal prism. Specifically, the shape of the housing 22 can be determined based on the specific shape and size of the electrode assembly 23. The housing 22 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment of the present application does not impose any particular limitations on this.

[0113] The electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The housing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (e.g., lithium ions) are inserted and removed between the positive and negative electrode components. The separator is positioned between the positive and negative electrode components to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0114] In some embodiments, the positive electrode member may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0115] In some embodiments, the negative electrode member may be a negative electrode sheet, which may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0116] In some embodiments, the separator is a separator. The present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical and mechanical stability can be selected.

[0117] In some embodiments, the electrode assembly 23 is a wound structure in which the positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0118] In some embodiments, the electrode assembly 23 is a laminated structure.

[0119] In one embodiment, the battery cell 20 is a square battery cell, and the shell 22 of the battery cell 20 is formed into a rectangular parallelepiped. The long side 221 of the battery cell 20 can refer to the edge of the bottom of the shell 22 extending along the length direction (see the X direction in Figures 3 and 4), and the short side 222 of the battery cell 20 can refer to the edge of the bottom of the shell 22 extending along the width direction (see the Y direction in Figures 3 and 4).

[0120] In one embodiment, when the battery 1100 includes a case 10, the heat exchange assembly 100 can serve as the bottom wall of the case 10, or the heat exchange assembly 100 is arranged between the bottom wall of the case 10 and the battery cell 20, and the battery cell 20 is fixedly mounted on the heat exchange assembly 100; when the battery 1100 does not include a case 10, the battery cell 20 is fixed on the heat exchange assembly 100, and the heat exchange assembly 100 serves as the bottom plate of the battery 1100, playing the role of supporting and fixing the battery cell 20.

[0121] In one embodiment of the present application, in combination with Figures 5 to 15, a heat exchange component 100 is provided, which is constructed with a heat exchange channel 130, an inlet 1111 and an outlet 1211; the heat exchange channel 130 includes an inlet section 131, an outflow section 132 and a heat exchange section 133, the heat exchange section 133 connects the inflow section 131 and the outflow section 132, the inlet 1111 is connected to the inflow section 131, so that the heat exchange liquid flows into the inflow section 131 through the inlet 1111, and the outlet 1211 is connected to the outflow section 132, so that the heat exchange liquid flows out of the outflow section 132 through the outlet 1211; wherein, when the heat exchange component 100 is in a heat exchange state, the inflow section 131 is set lower than the outflow section 132.

[0122] The heat exchange assembly 100 may be a component used to exchange heat with the battery cells 20 in the battery 1100. The heat exchange assembly 100 enables heat transfer between the heat exchange fluid and the battery cells 20, thereby controlling the temperature of the battery cells 20. The heat exchange assembly 100 is made of a material with good thermal conductivity to meet heat exchange requirements. Thermally conductive materials include, but are not limited to, aluminum, aluminum alloys, and copper. The heat exchange fluid may include, but is not limited to, water or coolant, with the coolant preferably being deionized water.

[0123] The heat exchange channel 130 may refer to a channel for the heat exchange liquid to flow inside the heat exchange assembly 100. The heat exchange channel 130 includes an inflow section 131, an outflow section 132, and a heat exchange section 133. The heat exchange section 133 may refer to a section of the heat exchange channel 130 that exchanges heat with the battery cell 20. The inflow section 131 may refer to a section of the heat exchange channel 130 that the heat exchange liquid passes through before flowing into the heat exchange section 133. The inflow section 131 is lower than the outflow section 132. The outflow section 132 may also be It refers to a section of the channel that the heat exchange liquid in the heat exchange channel 130 passes through after flowing out of the heat exchange section 133, and the outflow section 132 is higher than the inflow section 131; wherein, the heat exchange section 133 connects the inflow section 131 and the outflow section 132. It can be understood that the heat exchange liquid in the inflow section 131 can flow into the heat exchange section 133, and the heat exchange liquid exchanges heat with the battery cell 20 during the flow in the heat exchange section 133. After the heat exchange is completed, it flows into the outflow section 132 and flows out of the heat exchange component 100 through the outflow section 132.

[0124] The inlet 1111 may refer to an opening on the heat exchange assembly 100 for allowing the heat exchange liquid to flow into the inlet section 131 . The heat exchange liquid flows into the inlet section 131 through the inlet 1111 .

[0125] The outflow port 1211 may refer to an opening on the heat exchange assembly 100 for allowing the heat exchange liquid to flow out of the outflow section 132 . The heat exchange liquid in the outflow section 132 flows out of the heat exchange assembly 100 through the outflow port 1211 .

[0126] When the heat exchange component 100 is in the heat exchange state, the inflow section 131 is set lower than the outflow section 132. It can be understood that when the heat exchange component 100 is in the heat exchange state, the position of the inflow section 131 is lower than the position of the outflow section 132, and the outflow section 132 is set higher than the inflow section 131. The heat exchange component 100 in the heat exchange state may refer to the heat exchange component 100 being installed in the battery 1100 and being in a state of exchanging heat with the battery cell 20.

[0127] When the heat exchange component 100 is in heat exchange state, the heat exchange liquid flows into the inlet section 131 of the heat exchange channel 130 through the inlet 1111, and then flows into the heat exchange section 133 through the inlet section 131. The heat exchange liquid exchanges heat with the battery cell 20 during the flow in the heat exchange section 133. After the heat exchange is completed, the heat exchange liquid flows into the outflow section 132, and finally flows out of the heat exchange component 100 through the outflow outlet 1211. In this way, the heat exchange of the battery cell 20 is completed, and the temperature control of the battery 1100 is achieved.

[0128] In the heat exchange component 100 of the embodiment of the present application, the inflow section 131 is arranged lower than the outflow section 132, so that the heat exchange liquid flows into the heat exchange section 133 from the lower inflow section 131, and then flows out through the higher outflow section 132. The heat exchange liquid flows upward during the flow in the heat exchange channel 130, and the upward flow is conducive to accelerating the discharge of bubbles in the heat exchange liquid, thereby reducing the residence time of bubbles in the heat exchange channel 130, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery 1100.

[0129] In another embodiment of the present application, as shown in Figures 7 to 9 , the inflow section 131 has a first end and a second end, the first end being arranged lower than the second end, and the inflow section 131 extends obliquely from the first end toward the second end. The position where the inflow section 131 communicates with the inflow port 1111 is closer to the first end than the position where the inflow section 131 communicates with the heat exchange section 133.

[0130] The inflow section 131 has a first end and a second end, with the first end being lower than the second end. The inflow section 131 extends obliquely from the first end toward the second end. It is understood that the inflow section 131 extends obliquely upward, and the first end may refer to the lower end of the inflow section 131, while the second end may refer to the higher end of the inflow section 131. The cross-sectional shape of the inflow section 131 may include various shapes, such as circular, elliptical, triangular, or quadrilateral. For example, the inflow section 131 extends obliquely upward from left to right, and the first end may refer to the left end of the inflow section 131, while the second end may refer to the right end of the inflow section 131.

[0131] Compared with the position where the inflow section 131 is connected to the inflow port 1111 and the position where the inflow section 131 is connected to the heat exchange section 133, the position where the inflow section 131 is connected to the inflow port 1111 is closer to the first end. It can be understood that the distance L1 between the position where the inflow section 131 is connected to the inflow port 1111 and the first end is smaller than the distance L2 between the position where the inflow section 131 is connected to the heat exchange section 133; wherein, the position where the inflow section 131 is connected to the inflow port 1111 may refer to the position of the opening on the inner wall of the inflow section 131 that is connected to the inflow port 1111. For example, the opening is an opening located in the middle of the inflow section 131; the position where the inflow section 131 is connected to the heat exchange section 133 may refer to the position of the opening on the inner wall of the inflow section 131 that is connected to the heat exchange section 133. For example, the opening is an opening located at the second end; in addition, during heat exchange, the heat exchange liquid flowing in from the inflow port 1111 flows into the inflow section 131 and then flows obliquely upward, and finally flows into the heat exchange section 133.

[0132] By adopting the technical solution of this embodiment, the heat exchange liquid flows obliquely upward in the inflow section 131, which is conducive to accelerating the discharge of bubbles in the inflow section 131 and reducing the residence time of bubbles in the inflow section 131, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery 1100. In addition, the inflow section 131 is arranged to be obliquely upward, and the flow channel structure of the inflow section 131 is simple, which is also convenient for processing and manufacturing.

[0133] In another embodiment of the present application, in combination with Figures 7, 10 and 11, the outflow section 132 has a third end and a fourth end, the third end is set lower than the fourth end, the inflow section 131 extends obliquely from the third end toward the fourth end, and the position where the outflow section 132 is connected to the outflow outlet 1211 is closer to the fourth end than the position where the outflow section 132 is connected to the heat exchange section 133.

[0134] The outflow section 132 has a third end and a fourth end, with the third end being lower than the fourth end. The inflow section 131 extends obliquely from the third end toward the fourth end. It is understood that the outflow section 132 extends obliquely upward, and the third end may refer to the lower end of the outflow section 132, while the fourth end may refer to the higher end of the outflow section 132. The cross-sectional shape of the inflow section 131 may be various, such as circular, elliptical, triangular, or quadrilateral. For example, the outflow section 132 extends obliquely upward from left to right, and the third end may refer to the left end of the inflow section 131, while the fourth end may refer to the right end of the inflow section 131.

[0135] Compared with the position where the outflow section 132 is connected to the outlet 1211 and the position where the outflow section 132 is connected to the heat exchange section 133, the position where the outflow section 132 is connected to the outlet 1211 is closer to the fourth end. It can be understood that the distance L3 between the position where the outflow section 132 is connected to the outlet 1211 and the fourth end is smaller than the distance L4 between the position where the outflow section 132 is connected to the heat exchange section 133 and the fourth end; wherein, the position where the outflow section 132 is connected to the outlet 1211 can refer to the position where the outflow section 132 is connected to the outlet 1211. The position of the opening on the inner wall of the outlet section 132 that is connected to the outflow outlet 1211 is, for example, an opening located in the middle of the outflow section 132; the position where the outflow section 132 is connected to the heat exchange section 133 may refer to the position of the opening on the inner wall of the inflow section 131 that is connected to the heat exchange section 133, for example, the opening is an opening located at the third end; in addition, during heat exchange, the heat exchange liquid flowing out of the heat exchange section 133 enters the outflow section 132 and then flows obliquely upward, and finally flows out from the outflow outlet 1211.

[0136] By adopting the technical solution of this embodiment, the heat exchange liquid flows upward at an angle within the outflow section 132, which helps to accelerate the discharge of bubbles within the outflow section 132 and reduce the time that bubbles remain within the outflow section 132, thereby reducing the risk of partial discharge caused by bubbles and improving the reliability of the battery 1100. In addition, the outflow section 132 is arranged upward at an angle, and the flow channel structure of the outflow section 132 is simple, which is also convenient for processing and manufacturing.

[0137] In another embodiment of the present application, the first end is arranged lower than the second end, the inflow section 131 extends obliquely from the first end toward the second end, and the position where the inflow section 131 is connected to the inlet 1111 is closer to the first end than the position where the inflow section 131 is connected to the heat exchange section 133; the inflow section 131 extends obliquely upward from the first end toward the second end, the first end is connected to the inlet 1111, and the second end is connected to the heat exchange section 133; the outflow section 132 has a third end and a fourth end, the third end is arranged lower than the fourth end, the inflow section 131 extends obliquely from the third end toward the fourth end, and the position where the outflow section 132 is connected to the outlet 1211 is closer to the fourth end than the position where the outflow section 132 is connected to the heat exchange section 133.

[0138] By adopting the technical solution of this embodiment, the heat exchange liquid flows upward at an angle both in the outflow section 132 and in the outflow section 132, which helps to accelerate the discharge of bubbles and reduce the length of time bubbles stay in the heat exchange channel 130, thereby reducing the risk of partial discharge caused by bubbles and improving the reliability of the battery 1100. In addition, the flow channel structure of the heat exchange channel 130 is simple and easy to process and manufacture.

[0139] In another embodiment of the present application, as shown in Figures 7 to 11, the heat exchange assembly 100 includes a supporting surface 126 for supporting the battery 1100 unit, and the distance L5 between the inflow section 131 and the supporting surface 126 is greater than the distance L6 between the outflow section 132 and the supporting surface 126.

[0140] The bearing surface 126 may refer to the surface of the heat exchange assembly 100 that supports the battery cells 20. The bearing surface 126 supports the battery cells 20. Thus, when the heat exchange assembly 100 is in the heat exchange state, the bearing surface 126 is located at the top surface of the heat exchange assembly 100. The distance L5 between the inflow section 131 and the bearing surface 126 is greater than the distance L6 between the outflow section 132 and the bearing surface 126. It can be understood that the inflow section 131 is located below the bearing surface 126, the outflow section 132 is located below the bearing surface 126, and the inflow section 131 is lower than the outflow section 132.

[0141] By adopting the technical solution of this embodiment, the distance L5 between the inflow section 131 and the supporting surface 126 is greater than the distance L6 between the outflow section 132 and the supporting surface 126, so that the inflow section 131 can be lower than the outflow section 132, which is conducive to the discharge of bubbles.

[0142] In another embodiment of the present application, as shown in combination with FIG. 7 and FIG. 8 , the bearing surface 126 is a horizontal plane.

[0143] It can be understood that the bearing surface 126 is arranged horizontally.

[0144] By adopting the technical solution of this embodiment, the bearing surface 126 is set horizontally, and the battery cell 20 can be placed horizontally on the bearing surface 126. The bearing surface 126 is evenly stressed and has a good bearing effect, which is beneficial to improving the reliability of the battery cell 20. In addition, there is usually a material such as thermal conductive silicone between the bearing surface 126 and the battery cell 20. The bearing surface 126 is horizontal, so the thermal conductive silicone is laid horizontally on the bearing surface 126, and it is not easy to have uneven thickness due to its own gravity flow, so that the thermal conductive silicone is evenly spread between the battery cell 20 and the bearing surface 126, which is beneficial to improving the heat exchange effect of the battery cell 20.

[0145] In another embodiment of the present application, as shown in Figures 5 to 11, the heat exchange section 133 includes a first side portion and a second side portion relatively distributed along a first direction, the first side portion is arranged lower than the second side portion, the first side portion is connected to the inflow section 131, and the second side portion is connected to the outflow section 132.

[0146] In the first direction, the side of the heat exchange section 133 at a lower position is the first side, and the side of the heat exchange section 133 at a higher position is the second side; for example, the first direction can refer to the direction indicated by the arrow M shown in Figure 6.

[0147] The first side portion is connected to the inflow section 131, and the second side portion is connected to the outflow section 132. It can be understood that the heat exchange liquid flowing out of the inflow section 131 flows into the heat exchange section 133 from the first side portion at a lower position, and then flows out of the heat exchange section 133 from the second side portion at a higher position and enters the outflow section 132, so that the heat exchange liquid flows obliquely upward in the heat exchange section 133.

[0148] By adopting the technical solution of this embodiment, in a first direction, the heat exchange liquid flows into the heat exchange section 133 from the first side located at a lower position, and then flows out from the second side located at a higher position, so that the heat exchange liquid has an upward flow process, which is conducive to accelerating the discharge of bubbles and reducing the residence time of bubbles in the heat exchange section 133, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery 1100.

[0149] In another embodiment of the present application, as shown in Figures 5 to 11, the heat exchange section 133 extends obliquely from the first side toward the second side, and the first direction is the direction from the first side toward the second side.

[0150] The heat exchange section 133 extends obliquely from the first side toward the second side. It can be understood that the heat exchange section 133 extends obliquely upward along the first direction. When the heat exchange assembly 100 is in the heat exchange state, the heat exchange section 133 is arranged obliquely relative to the horizontal plane along the first direction. For example, the heat exchange section 133 extends obliquely upward along the first direction. The heat exchange section 133 extends obliquely upward from left to right along the first direction. The first side may refer to the left side of the heat exchange section 133, and the second side may refer to the right side of the heat exchange section 133. It should be noted that in actual applications, when the heat exchange assembly 100 is in the heat exchange state, the horizontal plane is parallel to the bottom surface of the heat exchange assembly 100 or the top surface of the heat exchange assembly 100; the top surface of the heat exchange assembly 100 may refer to the surface of the heat exchange assembly 100 that supports the battery cell 20, that is, the supporting surface 126 of the heat exchange assembly 100, and the bottom surface of the heat exchange assembly 100 may refer to the surface of the heat exchange assembly 100 that faces away from the battery cell 20.

[0151] By adopting the technical solution of this embodiment, the heat exchange liquid flows obliquely upward along the first direction in the heat exchange section 133, which is conducive to accelerating the discharge of bubbles and reducing the residence time of bubbles in the heat exchange section 133, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery 1100. In addition, the heat exchange section 133 extends obliquely, which makes the flow channel structure of the heat exchange section 133 simple and convenient for processing and manufacturing.

[0152] In another embodiment of the present application, as shown in FIG9 , in the first direction, the angle between the heat exchange section 133 and the horizontal plane is α, where 1°≤α≤15°.

[0153] It can be understood that when the heat exchange assembly 100 is in the heat exchange state, the angle between the inclined extension direction of the heat exchange section 133 along the first direction and the horizontal plane is α.

[0154] By adopting the technical solution of this embodiment, the design of 1°≤α≤15° makes the inclination angle of the heat exchange section 133 in the first direction appropriate. On the basis of being conducive to the discharge of bubbles, it can also make the heat exchange component 100 have a suitable thickness, which is conducive to improving the heat exchange effect of the heat exchange component 100, and is also conducive to reducing material redundancy and reducing production costs.

[0155] In another embodiment of the present application, as shown in FIG9 , 5°≤α≤10°.

[0156] By adopting the technical solution of this embodiment, the design of 1°≤α≤15° makes the inclination angle of the heat exchange section 133 more appropriate, which can better discharge bubbles. In addition, it can also make the heat exchange component 100 have a more reasonable thickness, which is more conducive to improving the heat exchange effect of the heat exchange component 100, reducing material redundancy, and reducing production costs.

[0157] In one embodiment, the value of α can be, but is not limited to, 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, or 15°.

[0158] In another embodiment of the present application, please refer to Figures 6, 7, 12 and 13, the heat exchange section 133 has a third side and a fourth side relatively distributed along the second direction, the third side is arranged lower than the fourth side, the inflow section 131 is arranged close to the third side, the outflow section 132 is arranged close to the fourth side, and the first direction intersects with the second direction.

[0159] The side portion of the heat exchange section 133 at a lower position is the third side portion, and the side portion of the heat exchange section 133 at a higher position is the fourth side portion.

[0160] The inflow section 131 is arranged close to the third side, and the outflow section 132 is arranged close to the fourth side. It can be understood that in the second direction, the heat exchange liquid flowing out of the inflow section 131 flows into the heat exchange section 133 from the third side at a low position, and then flows out of the heat exchange section 133 from the fourth side at a high position and enters the outflow section 132, so that the heat exchange liquid flows upward in the heat exchange section 133.

[0161] The first direction intersects with the second direction. It can be understood that the first direction and the second direction are not parallel. The heat exchange section 133 extends obliquely upward along the first direction, and the heat exchange section 133 also extends obliquely upward along the second direction, that is, the heat exchange section 133 extends obliquely upward in both directions.

[0162] By adopting the technical solution of this embodiment, in the second direction, the heat exchange liquid flows into the heat exchange section 133 from the lower third side, and then flows upward from the higher fourth side. This is conducive to accelerating the discharge of bubbles and reducing the residence time of bubbles in the heat exchange section 133, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery 1100.

[0163] In another embodiment of the present application, please refer to Figures 6, 7, 12 and 13, the heat exchange section 133 extends obliquely from the third side toward the fourth side, and the second direction is the direction from the third side toward the fourth side.

[0164] It is understood that the heat exchange section 133 extends upwardly and obliquely along the second direction. When the heat exchange assembly 100 is in the heat exchange state, the heat exchange section 133 is inclined relative to the horizontal plane along the second direction and extends upwardly and obliquely along the second direction. In the second direction, the side of the heat exchange section 133 at a lower position is the third side, and the side of the heat exchange section 133 at a higher position is the fourth side. For example, the second direction can refer to the direction indicated by arrow N in Figure 6. The heat exchange section 133 extends upwardly and obliquely along the second direction from front to back. The third side can refer to the front side of the heat exchange section 133, and the fourth side can refer to the rear side of the heat exchange section 133.

[0165] By adopting the technical solution of this embodiment, in actual use, the heat exchange assembly 100 typically needs to exchange heat for multiple battery cells 20, requiring a larger heat exchange area. Consequently, the heat exchange section 133 typically needs to be larger. The heat exchange liquid flows obliquely upward in both the first and second directions, ensuring that the heat exchange liquid always flows upward at any location. This facilitates the discharge of bubbles, reduces the duration of bubbles remaining within the heat exchange section 133, and thus reduces the risk of bubbles causing partial discharge, thereby improving the reliability of the battery 1100. Furthermore, the oblique extension of the heat exchange section 133 simplifies the flow path structure of the heat exchange section 133 and facilitates fabrication.

[0166] In another embodiment of the present application, as shown in FIG. 12 , in the second direction, the inclination angle of the heat exchange section 133 is β, where 1°≤β≤15°.

[0167] It can be understood that when the heat exchange assembly 100 is in the heat exchange state, the angle between the inclined extension direction of the heat exchange segment 133 in the second direction and the horizontal plane is α.

[0168] By adopting the technical solution of this embodiment, the design of 1°≤β≤15° makes the inclination angle of the heat exchange section 133 in the second direction appropriate. On the basis of being conducive to the discharge of bubbles, it can also make the heat exchange component 100 have a suitable thickness, which is conducive to improving the heat exchange effect of the heat exchange component 100, reducing material redundancy, and reducing production costs.

[0169] In another embodiment of the present application, as shown in FIG12 , 5°≤β≤10°.

[0170] By adopting the technical solution of this embodiment, the design of 1°≤β≤15° makes the inclination angle of the heat exchange section 133 more appropriate, which can better discharge bubbles. In addition, it can also make the heat exchange component 100 have a more reasonable thickness, which is more conducive to improving the heat exchange effect of the heat exchange component 100, reducing material redundancy, and reducing production costs.

[0171] In one embodiment, the value of β can be, but is not limited to, 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, or 15°.

[0172] In another embodiment of the present application, in combination with Figures 6, 7, 8, 10, 12 and 13, the heat exchange section 133 includes a first confluence sub-segment 1331, a second confluence sub-segment 1332 and a plurality of heat exchange sub-segments 1333, and the plurality of heat exchange sub-segments 1333 are all located between the first confluence sub-segment 1331 and the second confluence sub-segment 1332; the first confluence sub-segment 1331 and the second confluence sub-segment 1332 are extended along the second direction, and the plurality of heat exchange sub-segments 1333 are arranged at intervals along the second direction, and the two ends of each heat exchange sub-segment 1333 are respectively connected to the first confluence sub-segment 1331 and the second confluence sub-segment 1332, the inflow section 131 is connected to the first confluence sub-segment 1331, and the outflow section 132 is connected to the second confluence sub-segment 1332.

[0173] The first confluence sub-segment 1331 may refer to a section of a channel in the heat exchange segment 133 that is connected to the inflow segment 131 and can distribute the heat exchange liquid to each heat exchange sub-segment 1333, and the first confluence sub-segment 1331 extends along the second direction, that is, the first confluence sub-segment 1331 extends obliquely upward along the second direction. Such a design is conducive to the discharge of bubbles.

[0174] The second confluence sub-segment 1332 may refer to a section of a channel in the heat exchange section 133 that is connected to the outflow section 132 and can collect the heat exchange liquid flowing out of the heat exchange sub-segment 1333, and the second confluence sub-segment 1332 extends along the second direction, that is, the second confluence sub-segment 1332 extends obliquely upward along the second direction. This design is conducive to the discharge of bubbles.

[0175] The heat exchange sub-segment 1333 may refer to a channel in the heat exchange segment 133 located between the first confluence sub-segment 1331 and the second confluence sub-segment 1332, wherein there are multiple heat exchange sub-segments 1333, and the multiple heat exchange sub-segments 1333 are arranged at intervals along the second direction, that is, the multiple heat exchange sub-segments 1333 are arranged inclined upward along the second direction to facilitate the discharge of bubbles; wherein the heat exchange sub-segment 1333 may extend along a straight line, or may extend from the first confluence sub-segment 1331 to the second confluence sub-segment 1332 along an arc, a serpentine line, a broken line, etc., to connect the first confluence sub-segment 1331 and the second confluence sub-segment 1332.

[0176] The first confluence sub-segment 1331 and the second confluence sub-segment 1332 extend along the second direction, that is, the first confluence sub-segment 1331 and the second confluence sub-segment 1332 are arranged in parallel, and multiple heat exchange sub-segments 1333 are arranged at intervals along the length direction of the first confluence sub-segment 1331, and the two ends of each heat exchange sub-segment 1333 are respectively connected with the first confluence sub-segment 1331 and the second confluence sub-segment 1332, the inflow section 131 is connected with the first confluence sub-segment 1331, and the outflow section 132 is connected with the second confluence sub-segment 1332, so that the heat exchange liquid flowing out of the inflow section 131 first flows into the first confluence sub-segment 1331, and then is distributed to each heat exchange sub-segment 1333 through the first confluence sub-segment 1331, and then the heat exchange liquid of each heat exchange sub-segment 1333 flows into the second confluence sub-segment 1332 for merging, and finally flows into the outflow section 132.

[0177] In actual use, the design of the heat exchange channel 130 becomes increasingly complex, resulting in a longer residence time of bubbles and a higher risk of partial discharge.

[0178] By adopting the technical solution of this embodiment, the heat exchange section 133 adopts a structure of multiple sub-segments, which can increase the heat exchange area between the heat exchange liquid and the heat exchange component 100, which is beneficial to improving the heat exchange effect. In addition, the arrangement of the first converging sub-segment 1331, the second converging sub-segment 1332 and the multiple heat exchange sub-segments 1333 is simple, which reduces the residence time of bubbles in the heat exchange section 133, thereby reducing the risk of local discharge caused by bubbles and improving the reliability of the battery 1100.

[0179] In another embodiment of the present application, as shown in combination with FIG. 6 , FIG. 7 and FIG. 8 , each heat exchange sub-section 1333 is extended along the first direction.

[0180] It can be understood that the heat exchange sub-section 1333 extends obliquely upward along the first direction.

[0181] By adopting the technical solution of this embodiment, the heat exchange sub-segment 1333 extends obliquely upward along the first direction, which is conducive to the discharge of bubbles; in addition, the channel design of the heat exchange sub-segment 1333 is simple, which is also conducive to accelerating the discharge of bubbles, and is also conducive to reducing the difficulty of manufacturing the heat exchange component 100 and improving production efficiency.

[0182] In another embodiment of the present application, as shown in FIG6 , the first direction is perpendicular to the second direction.

[0183] It can be understood that the heat exchange sub-segment 1333 is perpendicular to the first converging sub-segment 1331 , and the heat exchange sub-segment 1333 is perpendicular to the second converging sub-segment 1332 .

[0184] By adopting the technical solution of this embodiment, the channel design of the heat exchange section 133 is regular and simple, which is conducive to accelerating the discharge of bubbles, and the flow distribution of the heat exchange liquid is regular and simple, and the heat exchange between the battery cells 20 is uniform, which is conducive to reducing the temperature difference between the battery cells 20, thereby improving the reliability of the battery 1100.

[0185] In another embodiment of the present application, as shown in Figure 16, the heat exchange assembly 100 includes a supporting surface 126 for supporting the battery 1100 unit, and the extension direction of the heat exchange sub-segment 1333 is projected on the supporting surface 126 parallel to the long side 221 of the battery 1100 unit.

[0186] The extension direction of the heat exchange sub-segment 1333 can refer to the first direction, or it can refer to the flow direction of the heat exchange liquid in the heat exchange sub-segment 1333; the projection of the extension direction of the heat exchange sub-segment 1333 on the bearing surface 126 can refer to the projection of the first direction on the bearing surface 126, or it can refer to the projection of the flow direction of the heat exchange liquid in the heat exchange sub-segment 1333 on the bearing surface 126. For details, please refer to the dotted arrow along the X-axis direction in Figure 16.

[0187] For example, the battery cell 20 is a square-shell battery cell. The long side 221 of the battery cell 20 may refer to an edge of the battery cell 20 parallel to the length direction, and the short side 222 of the battery cell 20 may refer to an edge of the battery cell 20 parallel to the width direction.

[0188] The projection of the extension direction of the heat exchange sub-segment 1333 on the supporting surface 126 is parallel to the long side 221 of the battery cell 20. It can be understood that the projection of the first direction on the supporting surface 126 is parallel to the long side 221 of the battery cell 20; in actual applications, there are multiple battery cells 20, and the battery cells 20 are arranged in a rectangular shape. The battery cells 20 in each row are arranged along the long side 221 of the battery cell 20, and the battery cells 20 in each column are arranged along the short side 222 of the battery cell 20. During the flow of the heat exchange sub-segment 1333, the heat exchange liquid exchanges heat with the battery cells 20 in each row in turn, so that the heat exchange effect of the battery cells 20 in each row is not much different, thereby reducing the temperature difference of the battery cells 20 between adjacent rows, which is beneficial to improving the reliability of the battery 1100.

[0189] By adopting the technical solution of this embodiment, the heat exchange liquid exchanges heat with the battery cells 20 in each row in turn during the flow of the heat exchange sub-section 1333, so that the heat exchange effect received by the battery cells 20 in each row is not much different, thereby reducing the temperature difference of the battery cells 20 between adjacent rows, which is beneficial to improving the reliability of the battery 1100.

[0190] In another embodiment of the present application, in combination with Figures 6, 7, 12 and 13, the first bus segment 1331 has a fifth end and a sixth end, the second bus segment 1332 has a seventh end and an eighth end, the fifth end is set lower than the sixth end, the seventh end is set lower than the eighth end, the fifth end is connected to the inflow segment 131, and the eighth end is connected to the outflow segment 132.

[0191] It can be understood that the end of the first confluence sub-segment 1331 at a low position is the fifth end, the end of the first confluence sub-segment 1331 at a high position is the sixth end, the end of the second confluence sub-segment 1332 at a low position is the seventh end, and the end of the second confluence sub-segment 1332 at a high position is the eighth end, so that the fifth end is at the lowest position of the heat exchange section 133, and the eighth end is at the highest position of the heat exchange section 133, and the inflow section 131 is connected with the fifth end, and the outflow section 132 is connected with the eighth end, so that the heat exchange liquid always flows upward in the heat exchange section 133, which is also more conducive to the discharge of bubbles, reduces the risk of local discharge, and improves the reliability of the battery 1100. In addition, the fifth, sixth, seventh, and eighth ends are respectively located at the four corners of the heat exchange segment 133, with the fifth end communicating with the inflow segment 131 and the eighth end communicating with the outflow segment 132. The inflow segment 131 and the outflow segment 132 are located at opposite corners of the heat exchange segment 133. Thus, the path taken by the heat exchange liquid flowing through any heat exchange sub-segment 1333 from the inflow segment 131 to the outflow segment 132 is substantially the same. For example, the first confluence sub-segment 1331 extends obliquely upward from front to back in the second direction, with the fifth end being the front end of the first confluence sub-segment 1331 and the sixth end being the rear end of the first confluence sub-segment 1331. The second confluence sub-segment 1332 extends obliquely upward from front to back in the second direction, with the seventh end being the front end of the second confluence sub-segment 1332 and the eighth end being the rear end of the second confluence sub-segment 1332.

[0192] By adopting the technical solution of this embodiment, the heat exchange liquid always flows upward in the heat exchange section 133, which is more conducive to the discharge of bubbles, reduces the risk of local discharge, and improves the reliability of the battery 1100; in addition, the path of the heat exchange liquid flowing through any heat exchange sub-section 1333 from the inflow section 131 to the outflow section 132 is not much different, which is conducive to the uniformity of heat exchange between the battery cells 20, and is conducive to reducing the temperature difference between the battery cells 20, thereby improving the reliability of the battery 1100.

[0193] In another embodiment of the present application, the flow areas of the multiple heat exchange sub-sections 1333 are the same.

[0194] The heat exchange sub-segment 1333 is cut by a plane perpendicular to the axis of the heat exchange sub-segment 1333. The intersection of the plane and the inner wall of the heat exchange sub-segment 1333, and the area formed by the intersection can be the flow area of ​​the heat exchange sub-segment 1333; wherein, the cross-sectional shape of the heat exchange sub-segment 1333, the cross-sectional shape of the first confluence sub-segment 1331, and the cross-sectional shape of the second confluence sub-segment 1332 can be, but are not limited to, circular, triangular, quadrilateral, etc. For example, if the cross-sectional shape of the heat exchange sub-segment 1333 is a rectangle, then the flow area of ​​the heat exchange sub-segment 1333 is equal to the length of the rectangle multiplied by the width.

[0195] By adopting the technical solution of this embodiment, the flow areas of the heat exchange sub-segments 1333 are the same, and the heat exchange liquid is evenly distributed in multiple heat exchange sub-segments 1333, which is beneficial to improving the heat exchange uniformity of the battery cells 20 and reducing the temperature difference between the battery cells 20, thereby improving the reliability of the battery 1100.

[0196] In another embodiment of the present application, the flow area of ​​the first bus sub-segment 1331 and the flow area of ​​the second bus sub-segment 1332 are the same.

[0197] The area enclosed by the intersection of a plane perpendicular to the axis of the first bus-segment 1331 and the inner wall of the first bus-segment 1331 can be the flow area of ​​the first bus-segment 1331. Similarly, the area enclosed by the intersection of a plane perpendicular to the axis of the second bus-segment 1332 and the inner wall of the second bus-segment 1332 can be the flow area of ​​the second bus-segment 1332. The cross-sectional shapes of the first bus-segment 1331 and the second bus-segment 1332 can be, but are not limited to, circular, triangular, or quadrilateral shapes. For example, if the cross-sectional shapes of the first bus-segment 1331 and the second bus-segment 1332 are rectangular, the flow area of ​​the corresponding sub-segment is equal to the length multiplied by the width of the corresponding rectangle.

[0198] By adopting the technical solution of this embodiment, the flow area of ​​the first confluence sub-segment 1331 is the same as the flow area of ​​the second confluence sub-segment 1332, which is beneficial to improving the uniformity of the distribution of the heat exchange liquid in the heat exchange channel 130, and is beneficial to improving the heat exchange uniformity of the battery cell 20, reducing the temperature difference between the battery cells 20, and thus improving the reliability of the battery 1100.

[0199] In another embodiment of the present application, the flow area of ​​the first converging sub-segment 1331 and the flow area of ​​the second converging sub-segment 1332 are equal to the flow area of ​​the heat exchanging sub-segment 1333 .

[0200] By adopting the technical solution of this embodiment, the cross-sectional area of ​​the flow channel of the heat exchange liquid flowing through any heat exchange sub-segment 1333 from the outflow section 132 to the outflow section 132 is the same or has little difference, and the heat exchange liquid is better distributed uniformly in the heat exchange channel 130, which is beneficial to improving the heat exchange uniformity of the battery cell 20 and reducing the temperature difference between the battery cells 20, thereby improving the reliability of the battery 1100.

[0201] In another embodiment of the present application, the flow rate of the heat exchange sub-segment 1333 is Q1, the flow area of ​​the heat exchange sub-segment 1333 is S1, 0.5m / s≤Q1 / S1≤5m / s; and / or, the flow rate of the first confluence sub-segment 1331 is Q2, the flow area of ​​the first confluence sub-segment 1331 is S2, 0.5m / s≤Q2 / S2≤5m / s; and / or, the flow rate of the second confluence sub-segment 1332 is Q3, the flow area of ​​the second confluence sub-segment 1332 is S3, 0.5m / s≤Q3 / S3≤5m / s.

[0202] The flow rate of the heat exchange sub-segment 1333 may refer to the volume of the heat exchange liquid flowing through the heat exchange sub-segment 1333 per unit time; the flow rate of the first confluence sub-segment 1331 may refer to the volume of the heat exchange liquid flowing through the first confluence sub-segment 1331 per unit time; the flow rate of the second confluence sub-segment 1332 may refer to the volume of the heat exchange liquid flowing through the second confluence sub-segment 1332 per unit time; wherein, after placing the flow meter in the heat exchange sub-segment 1333, when the heat exchange section 133 is in a heat exchange state, the heat exchange liquid flows through the heat exchange sub-segment 1333, and the value displayed by the flow meter is the flow rate of the heat exchange sub-segment 1333; similarly, the flow rate of the first confluence sub-segment 1331 and the flow rate of the second confluence sub-segment 1332 can both be obtained using a flow meter. It should be noted that the flow rate divided by the flow area is equal to the flow velocity, that is, Q1 / S1 can refer to the flow velocity of the heat exchange liquid in the heat exchange sub-segment 1333, Q2 / S2 can refer to the flow velocity of the heat exchange liquid in the first confluence sub-segment 1331, and Q3 / S3 can refer to the flow velocity of the heat exchange liquid in the second confluence sub-segment 1332.

[0203] In one possible embodiment, the flow rate of heat exchange sub-segment 1333 is Q1, the flow area of ​​heat exchange sub-segment 1333 is S1, and 0.5 m / s ≤ Q1 / S1 ≤ 5 m / s. It can be understood that when the flow rate of heat exchange sub-segment 1333 is within this range, the heat exchange liquid flows through heat exchange sub-segment 1333 at a relatively high speed, thereby quickly removing heat from the battery cells 20 and achieving a good heat exchange effect for the battery cells 20. Specifically, the value of Q1 / S1 can be, but is not limited to, 0.5 m / s, 0.7 m / s, 0.9 m / s, 1 m / s, 1.2 m / s, 1.4 m / s, 1.6 m / s, 1.8 m / s, 2 m / s, 3 m / s, 4 m / s, or 5 m / s.

[0204] In one possible embodiment, the flow rate of first converging sub-segment 1331 is Q2, the flow area of ​​first converging sub-segment 1331 is S2, and 0.5 m / s ≤ Q2 / S2 ≤ 5 m / s. It is understood that the flow rate of first converging sub-segment 1331 is within this range, allowing the heat exchange liquid to flow through first converging sub-segment 1331 to heat exchange sub-segment 1333 at a relatively high speed, thereby quickly removing heat from the battery cells 20 and achieving a good heat exchange effect for the battery cells 20. Specifically, the value of Q2 / S2 can be, but is not limited to, 0.5 m / s, 0.7 m / s, 0.9 m / s, 1 m / s, 1.2 m / s, 1.4 m / s, 1.6 m / s, 1.8 m / s, 2 m / s, 3 m / s, 4 m / s, or 5 m / s.

[0205] In one possible embodiment, the flow rate of the second converging sub-segment 1332 is Q3, the flow area of ​​the second converging sub-segment 1332 is S3, and 0.5 m / s ≤ Q3 / S3 ≤ 5 m / s. It is understood that the flow rate of the second converging sub-segment 1332 is within this range, so that the heat exchange liquid can flow out of the heat exchange assembly 100 from the second converging sub-segment 1332 at a faster rate, thereby quickly removing heat from the battery cells 20 and achieving a good heat exchange effect for the battery cells 20. Specifically, the value of Q3 / S3 can be, but is not limited to, 0.5 m / s, 0.7 m / s, 0.9 m / s, 1 m / s, 1.2 m / s, 1.4 m / s, 1.6 m / s, 1.8 m / s, 2 m / s, 3 m / s, 4 m / s, or 5 m / s.

[0206] Through the technical solution of this embodiment, the heat exchange liquid can pass through the heat exchange section 133 at a faster speed, thereby taking away the heat of the battery cell 20 more quickly, so that the battery cell 20 has a good heat exchange effect.

[0207] In another embodiment of the present application, the flow area of ​​the heat exchange subsection 1333 is S1, 0.00001m 2 ≤S1≤0.001m 2 and / or, the flow area of ​​the first confluence sub-segment 1331 is S2, 0.00001m 2 ≤S2≤0.001m 2 and / or, the flow area of ​​the second confluence sub-segment 1332 is S3, 0.00001m 2 ≤S3≤0.001m 2 .

[0208] In one possible embodiment, the flow area of ​​the heat exchange subsection 1333 is S1, 0.00001m 2 ≤S1≤0.001m 2, so that the flow area of ​​the heat exchange sub-segment 1333 is set within this range, the heat exchange liquid can flow through the heat exchange sub-segment 1333 at an appropriate speed, thereby quickly removing the heat of the battery cell 20, so that the battery cell 20 has a good heat exchange effect, which is conducive to improving the reliability of the battery 1100. Specifically, the value of S1 can be, but is not limited to, 0.00001m 2 , 0.0001m 2 , 0.0002m 2 , 0.0003m 2 , 0.0004m 2 , 0.0005m 2 , 0.0006m 2 , 0.0007m 2 , 0.0008m 2 , 0.0009m 2 , 0.001m 2 .

[0209] In a possible embodiment, the flow area of ​​the first busbar segment 1331 is S2, 0.00001m 2 ≤S1≤0.001m 2 , so that the flow area of ​​the first converging sub-segment 1331 is set within this range, the heat exchange liquid can flow through the first converging sub-segment 1331 at an appropriate speed, and then flow into the heat exchange sub-segment 1333 for heat exchange, so that the battery cell 20 has a good heat exchange effect, which is conducive to improving the reliability of the battery 1100. Specifically, the value of S2 can be but is not limited to 0.00001m 2 , 0.0001m 2 , 0.0002m 2 , 0.0003m 2 , 0.0004m 2 , 0.0005m 2 , 0.0006m 2 , 0.0007m 2 、0.0008m 2 , 0.0009m 2 , 0.001m 2 .

[0210] In one possible embodiment, the flow area of ​​the second bus segment 1332 is S3, 0.00001m 2 ≤S1≤0.001m 2, so that the flow area of ​​the second confluence sub-segment 1332 is set within this range, the heat exchange liquid can flow through the second confluence sub-segment 1332 at an appropriate speed and out of the heat exchange assembly 100, thereby quickly taking away the heat of the battery cell 20, so that the battery cell 20 has a good heat exchange effect, which is conducive to improving the reliability of the battery 1100. Specifically, the value of S3 can be, but is not limited to, 0.00001m 2 , 0.0001m 2 , 0.0002m 2 , 0.0003m 2 , 0.0004m 2 , 0.0005m 2 , 0.0006m 2 , 0.0007m 2 、0.0008m 2 , 0.0009m 2 , 0.001m 2 .

[0211] By adopting the technical solution of this embodiment, the heat exchange liquid can pass through the heat exchange section 133 at a faster speed, so that the battery cell 20 has a good heat exchange effect, which is beneficial to improving the reliability of the battery 1100.

[0212] In another embodiment of the present application, in combination with Figures 5, 6, 8 and 14, the heat exchange assembly 100 includes a first heat exchange member 110 and a second heat exchange member 120, the first heat exchange member 110 has a first surface 113, the second heat exchange member 120 has a second surface 123, the first surface 113 is constructed with a first groove 112, the second surface 123 is sealed to the first surface 113 and seals the opening of the first groove 112, and the second surface 123 and the groove wall of the first groove 112 are jointly arranged to form a heat exchange channel 130.

[0213] The first heat exchanger 110 may refer to a component in the heat exchange assembly 100 that is provided with a first groove 112, and the second heat exchanger 120 may refer to a component in the heat exchange assembly 100 that closes the opening of the first groove 112, wherein the first heat exchanger 110 and the second heat exchanger 120 are fitted and sealed to seal the first groove 112 of the first heat exchanger 110, so that when the heat exchange liquid flows through the first groove 112, the heat exchange liquid is not easy to leak from between the first heat exchanger 110 and the second heat exchanger 120. The first heat exchanger 110 and the second heat exchanger 120 are made of materials with good thermal conductivity, such as aluminum alloy; the first heat exchanger 110 and the second heat exchanger 120 can be sealed and connected by fixing methods such as bolts and welding. The first surface 113 may refer to the surface where the first heat exchange element 110 and the second heat exchange element 120 are in contact with each other, and the second surface 123 may refer to the surface where the second heat exchange element 120 and the first heat exchange element 110 are in contact with each other. The first surface 113 is recessed toward the second heat exchange element 120 to form a first groove 112. The second surface 123 is in contact with the first surface 113 to close the opening of the first groove 112, thereby forming a sealed heat exchange channel 130, so that the heat exchange liquid can flow in the first groove 112 and exchange heat with the battery cell 20.

[0214] By adopting the technical solution of this embodiment, a first groove 112 is formed on the first surface 113 of the first heat exchange element 110, and the second surface 123 of the second heat exchange element 120 is sealed and adhered to the first surface 113, so that the sealing of the heat exchange channel 130 can be achieved. The heat exchange channel 130 is simple to manufacture, and the overall structure of the heat exchange assembly 100 is simple, which is conducive to reducing manufacturing costs.

[0215] In another embodiment of the present application, in combination with Figures 6 and 17, the second surface 123 is a plane, or, in combination with Figures 6, 8, 14 and 15, the second surface 123 is constructed with a second groove 122, and the first groove 112 and the second groove 122 are connected so that the groove wall of the first groove 112 and the groove wall of the second groove 122 are jointly arranged to form a heat exchange channel 130.

[0216] In a possible embodiment, as shown in Figures 6 and 17, the second surface 123 is a plane. In this way, the heat exchange channel 130 can be sealed by directly utilizing the plane to seal with the first surface 113. The overall structure of the heat exchange channel 130 is simple, and the assembly accuracy requirements for the sealing between the plane and the first surface 113 are not high, which is beneficial to improving the production efficiency of the heat exchange component 100.

[0217] In one possible embodiment, the second surface 123 is constructed with a second groove 122, and the first groove 112 and the second groove 122 are connected, so that the groove wall of the first groove 112 and the groove wall of the second groove 122 jointly enclose a heat exchange channel 130; wherein, the second groove 122 can refer to a groove structure formed by the second surface 123 being recessed back toward the first heat exchange member 110, and the opening of the first groove 112 and the opening of the second groove 122 are connected, so that the groove wall of the first groove 112 and the groove wall of the second groove 122 jointly enclose the heat exchange channel 130; with this design, the first groove 112 and the second groove 122 jointly enclose the heat exchange channel 130, which can increase the flow area of ​​the heat exchange channel 130, thereby facilitating improving the heat exchange effect of the battery cell 20.

[0218] By adopting the technical solution of this embodiment, the heat exchange channel 130 can adopt various structural forms, and the manufacturing flexibility of the heat exchange channel 130 is good.

[0219] In another embodiment of the present application, the first surface 113 extends obliquely upward from the inflow section 131 toward the outflow section 132 .

[0220] It can be understood that the first surface 113 can refer to a surface that extends upward at an angle, and the inclined extension direction of the first surface 113 is from the inflow section 131 to the outflow section 132, so that the position of the inflow section 131 on the first surface 113 is lower than the position of the outflow section 132 on the first surface 113, and the heat exchange section 133 is also inclined from the inflow section 131 toward the outflow section 132 along the first surface 113, so that the heat exchange liquid always flows upward at an angle during the process of flowing from the inflow section 131 to the outflow section 132, which is conducive to the discharge of bubbles in the heat exchange liquid. In addition, in the actual processing process, by processing the first groove 112 on the inclined first surface 113, the first groove 112 set obliquely upward can be obtained, making the processing of the heat exchange channel 130 more convenient and quick; the first surface 113 and the second surface 123 are fitted together, so that the second surface 123 also extends obliquely upward; in addition, by processing the second groove 122 on the inclined second surface 123, the second groove 122 set obliquely upward can be obtained, and then by connecting the first groove 112 and the second groove 122, the heat exchange channel 130 extending obliquely upward can be obtained, and the processing of the heat exchange channel 130 is convenient and quick.

[0221] By adopting the technical solution of this embodiment, the heat exchange liquid always flows upward at an angle when flowing from the inflow section 131 to the outflow section 132, which is beneficial to the discharge of bubbles in the heat exchange liquid, reduces the risk of local discharge, improves the reliability of the battery 1100, and facilitates the processing and manufacturing of the heat exchange channel 130.

[0222] In one embodiment, the bearing surface 126 can be provided on the first heat exchange element 110 or on the second heat exchange element 120. After the heat exchange assembly 100 is installed in the battery 1100, if the first heat exchange element 110 is located above the second heat exchange element 120, the upper surface of the first heat exchange element 110 is the bearing surface 126, and the lower surface of the first heat exchange element 110 is the first surface 113; if the second heat exchange element 120 is located above the first heat exchange element 110, the upper surface of the second heat exchange element 120 is the bearing surface 126, and the lower surface of the second heat exchange element 120 is the second surface 123.

[0223] In another embodiment of the present application, as shown in FIG. 18 , the inlet 1111 and the outlet 1211 are disposed on a side of the heat exchange assembly 100 close to the battery cell 20 .

[0224] The inlet 1111 and outlet 1211 are located on the side of the heat exchange assembly 100 near the battery cell 20. It is understood that the inlet 1111, outlet 1211, and battery cell 20 are located on the same side of the heat exchange assembly 100. The inlet 1111 can refer to an opening on the support surface 126 or an opening for a pipe connection port on the support surface 126. The outlet 1211 can refer to an opening on the support surface 126 or an opening for a pipe connection port on the heat exchange assembly 100. The pipe connection port can be integrated with the heat exchange assembly 100 or a separate structure.

[0225] By adopting the technical solution of this embodiment, after the battery 1100 is installed in the vehicle 1000, the inlet 1111 and the outlet 1211 face the interior of the vehicle 1000, and there is sufficient space in the vehicle 1000 for the installation of pipes connected to the inlet 1111 and the outlet 1211, which can also reduce the risk of pipes being exposed and improve the reliability of the vehicle 1000.

[0226] In another embodiment of the present application, as shown in Figures 8 to 11 , the outflow port 1211 is provided on the side of the heat exchange assembly 100 close to the battery cell 20 , and the inflow port 1111 is provided on the side of the heat exchange assembly 100 facing away from the battery cell 20 .

[0227] It can be understood that the outflow port 1211 and the inflow port 1111 are located on opposite sides of the heat exchange component 100, wherein the outflow port 1211 and the battery cell 20 are located on the same side of the heat exchange component 100, and the inflow port 1111 is located on the other side of the heat exchange component 100 facing away from the outflow port 1211.

[0228] By adopting the technical solution of this embodiment, after the heat exchange component 100 is installed in the battery 1100, the battery cell 20 is located above the heat exchange component 100, that is, the outflow port 1211 is also located on the upper side of the heat exchange component 100, and the inflow port 1111 is located on the lower side of the heat exchange component 100, that is, the position of the outflow port 1211 is higher than the inflow port 1111. In this way, the heat exchange liquid can always flow upward from the inflow port 1111 to the outflow port 1211, which is beneficial to the discharge of bubbles, thereby improving the reliability of the battery 1100.

[0229] The technology of this application is described below with reference to some embodiments.

[0230] Example 1

[0231] In this embodiment, as shown in Figures 5 to 16, the heat exchange assembly 100 includes a first heat exchange member 110 and a second heat exchange member 120. The first heat exchange member 110 and the second heat exchange member 120 are arranged in a vertical manner. The upper surface of the first heat exchange member 110 is the first surface 113, and the lower surface of the second heat exchange member 120 is the second surface 123. The first direction extends upward from left to right, and the second direction extends upward from front to back. The first direction and the second direction are perpendicular, wherein the first direction and the second direction are both parallel to the first surface 113, and the first direction and the second direction are both parallel to the second surface 123, that is, the first surface 113 is inclined in the left and right directions. It extends obliquely upward, and the first surface 113 also extends obliquely upward in the front-to-back direction. Similarly, the second surface 123 extends obliquely upward in the left-right direction, and the second surface 123 also extends obliquely upward in the front-to-back direction; the first surface 113 is recessed downward to form a first groove 112, and the second surface 123 is recessed upward to form a second groove 122. The first groove 112 and the second groove 122 are connected to form a heat exchange channel 130. The heat exchange channel 130 formed in this way extends obliquely upward, and the heat exchange channel 130 extends obliquely upward in the left-to-right direction, and the heat exchange channel 130 also extends obliquely upward in the front-to-back direction, thereby facilitating the discharge of bubbles.

[0232] In this embodiment, a first pipe interface 111 is provided on the lower side of the first heat exchanger 110, and the lower end opening of the first pipe interface 111 forms an outflow outlet 1211. A second pipe interface 121 is provided on the upper side of the second heat exchanger 120, and the upper end of the second pipe interface 121 forms an inflow inlet 1111. The first pipe interface 111 and the first heat exchanger 110 are an integrated structure, and the second pipe interface 121 and the second heat exchanger 120 are an integrated structure, wherein the integrated structure refers to a structural component manufactured by an integrated process such as extrusion, injection molding, and die casting.

[0233] The first groove 112 includes a first inflow groove section 1121, a first outflow groove section 1122 and a first heat exchange groove section 1123. The first heat exchange groove section 1123 includes a first confluence sub-groove section 11231, a second confluence sub-groove section 11232 and a plurality of first heat exchange sub-groove sections 11233. Each first heat exchange sub-groove extends along the first direction, and the plurality of first heat exchange sub-grooves are spaced apart along the second direction. A first protrusion 114 is formed between two adjacent first heat exchange sub-groove sections 11233, and the first protrusion 114 separates the two adjacent first heat exchange sub-groove sections 11233. The first confluence sub-groove section 11231 is located on the left side of the plurality of first heat exchange sub-groove sections 11233, and the second confluence sub-groove section 11232 is located on the right side of the plurality of first heat exchange sub-groove sections 11233. Each first heat exchange sub-groove section 11233 The left end is connected to the first confluence sub-trough section 11231, and the right end of each first heat exchange sub-trough section 11233 is connected to the second confluence sub-trough section 11232. The first confluence sub-trough section 11231 and the second confluence sub-trough section 11232 extend along the second direction. In the first direction, the first first heat exchange sub-trough is coaxial with the first inflow trough end, and the right end of the first inflow trough is connected to the first confluence sub-trough section 11231. In the first direction, the last first heat exchange sub-trough section 11233 is coaxial with the first outflow trough section 1122, and the left end of the first outflow trough end is connected to the second confluence sub-trough section 11232. The left end of the first inflow trough section 1121 is connected to the inlet 1111 through the vertical first connecting channel 115.

[0234] The second groove 122 includes a second inflow groove section 1221, a second outflow groove section 1222 and a second heat exchange groove section 1223. The second heat exchange groove section 1223 includes a third converging sub-groove section 12231, a fourth converging sub-groove section 12232 and a plurality of second heat exchange sub-groove sections 12233. Each second heat exchange sub-groove section 12233 extends along the first direction, and the plurality of second heat exchange sub-groove sections 12233 are spaced apart along the second direction. A second protrusion 124 is formed between two adjacent second heat exchange sub-grooves, and the second protrusion 124 separates the two adjacent second heat exchange sub-grooves. The third converging sub-groove section 12231 is located on the left side of the plurality of second heat exchange sub-groove sections 12233, and the fourth converging sub-groove section 12232 is located on the right side of the plurality of second heat exchange sub-groove sections 12233. The left end of each second heat exchange sub-trough segment 12233 is connected to the third confluence sub-trough segment 12231, and the right end of each second heat exchange sub-trough segment 12233 is connected to the fourth confluence sub-trough segment 12232. The third confluence sub-trough segment 12231 and the fourth confluence sub-trough segment 12232 extend along the second direction. In the first direction, the first first heat exchange sub-trough is coaxial with the first inflow trough end, and the right end of the first inflow trough is connected to the third confluence sub-trough segment 12231. In the first direction, the last second heat exchange sub-trough segment 12233 is coaxial with the second outflow trough segment 1222, and the left end of the first outflow trough end is connected to the fourth confluence sub-trough segment 12232. The right end of the second outflow trough segment 1222 is connected to the outlet 1211 through a vertically arranged second connecting channel 125.

[0235] After the first surface 113 and the second surface 123 are fitted together, the second inflow trough section 1221 and the first inflow trough section 1121 are connected up and down to form the inflow section 131, the second inflow trough section 1221 and the first outflow trough section 1122 are connected up and down to form the outflow section 132, the third confluence sub-trough section 12231 and the first confluence sub-trough section 11231 are connected up and down to form the first confluence sub-segment 1331, the fourth confluence sub-trough section 12232 and the second confluence sub-trough section 11232 are connected up and down to form the second confluence sub-segment 1332, and the multiple second heat exchange sub-trough sections 12233 and the multiple first heat exchange sub-trough sections 11233 are connected up and down one by one to form The heat exchange channel 130 is simple in structure and easy to manufacture. In addition, the heat exchange channel 130 is designed in this way. After the heat exchange liquid flows into the heat exchange channel 130 from the inlet 1111, the heat exchange liquid flows from the first confluence sub-segment 1331 and the second confluence sub-segment 1332 from front to back, or from left to right along the heat exchange sub-segment 1333. Such an arrangement is conducive to the outflow of bubbles from the heat exchange component 100, reduces the residence time of bubbles in the heat exchange channel 130, reduces the wind direction that causes local discharge, and is conducive to improving the reliability of the battery 1100.

[0236] It should be noted that, in the first direction, the inclination angle of the heat exchange section 133 may refer to the inclination angle of the first surface 113 or the second surface 123 in the left-right direction, or the inclination angle of the heat exchange sub-segment 1333 in the left-right direction; in the second direction, the inclination angle of the heat exchange section 133 may refer to the inclination angle of the first surface 113 or the second surface 123 in the front-to-back direction, or the inclination angle of the first confluence sub-segment 1331 or the second confluence sub-segment 1332 in the front-to-back direction.

[0237] After the heat exchange assembly 100 is installed in the battery 1100, the heat exchange assembly 100 is located at the bottom of the battery cell 20, and the upper surface of the second heat exchange assembly 100 is the supporting surface 126. The supporting surface 126 is usually arranged horizontally, and multiple battery cells 20 are arranged in a rectangular shape on the supporting surface 126. The long side 221 of the battery cell 20 is parallel to the projection of the first direction on the supporting surface 126, and each row of battery cells 20 is arranged along the extension direction of the projection of the first direction on the supporting surface 126; in this way, the heat exchange liquid flows into the first confluence sub-segment 1331 through the inflow section 131 at the front end, and then flows from front to back through the first confluence sub-segment 1331 and is sequentially distributed to the heat exchange sub-segments 1333 arranged at intervals from front to back. The heat exchange liquid in each heat exchange sub-segment 1333 exchanges heat with each battery cell 20 in the corresponding row in turn during the process of flowing from left to right. In this way, after the heat exchange of each row of battery cells 20 is completed, The heat exchange liquid flows into the second confluence sub-segment 1332 for convergence and flows from front to back to the outflow section 132 at the rear end; and in this process, each row of battery cells 20 receives the same heat exchange effect, and the temperature difference between two adjacent rows of battery cells 20 is small, which is beneficial to improving the reliability of the battery 1100.

[0238] Example 2

[0239] The difference between this embodiment and the first embodiment is that: as shown in Figure 17, the second surface 123 is a plane, which seals the opening of the first inflow slot section 1121 to form the inflow section 131, seals the opening of the first outflow slot section 1122 to form the outflow section 132, seals the opening of the first confluence sub-segment 11231 to form the first confluence sub-segment 1331, seals the opening of the second confluence sub-segment 11232 to form the second confluence sub-segment 1332, and seals the openings of multiple first heat exchange sub-segments 11233 to form multiple heat exchange sub-segments 1333. In this way, the first surface 113 and the second surface 123 are fitted together, and the opening of the first groove 112 is sealed to achieve the sealing of the heat exchange channel 130. The assembly precision requirements for the first heat exchange component 110 and the second heat exchange component 120 are low, which is conducive to processing and manufacturing, and also conducive to improving production efficiency.

[0240] Example 3

[0241] The difference between this embodiment and the first and third embodiments is that: as shown in Figure 18, the first pipe interface 111 and the second pipe interface 121 are both arranged on the upper side of the second heat exchange component 120, so that after the battery 1100 loaded with the heat exchange component 100 is installed in the vehicle 1000, the external pipe can be connected to the heat exchange channel 130 through the first pipe interface 111 and the second pipe interface 121, thereby realizing the inflow and outflow of the heat exchange liquid. In addition, the first pipe interface 111 and the second pipe interface 121 are located inside the vehicle 1000, which can provide more space to accommodate external pipes, and also reduce the risk of unreliable use caused by the first pipe interface 111, the second pipe interface 121 and the external pipe being exposed at the bottom of the vehicle 1000.

[0242] In another embodiment of the present application, as shown in FIG2 , a battery 1100 is provided, comprising the heat exchange assembly 100 according to the above embodiment.

[0243] In another embodiment of the present application, in combination with FIG1 , an electrical device is provided, comprising a battery 1100 as described in the above embodiment.

[0244] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced with each other and will not be repeated herein for the sake of brevity.

[0245] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A heat exchange component, wherein: The heat exchange component is configured with a heat exchange channel, an inlet and an outlet; the heat exchange channel includes an inflow section, an outflow section and a heat exchange section for connecting the inflow section and the outflow section, the inflow section is communicated with the inflow section so that the heat exchange liquid flows from the inflow section into the inflow section, and the outflow section is communicated with the outflow section so that the heat exchange liquid flows out of the outflow section from the outflow section; Wherein, when the heat exchange component is in a heat exchange state, the inflow section is arranged lower than the outflow section.

2. The heat exchange assembly according to claim 1, wherein: The inflow section has a first end and a second end, the first end is arranged lower than the second end, the inflow section extends obliquely from the first end toward the second end, and the position where the inflow section is connected to the inflow port is closer to the first end than the position where the inflow section is connected to the heat exchange section; And / or, the outflow section has a third end and a fourth end, the third end is arranged lower than the fourth end, the inflow section extends obliquely from the third end toward the fourth end, and the position where the outflow section is connected to the outflow outlet is closer to the fourth end than the position where the outflow section is connected to the heat exchange section.

3. The heat exchange assembly according to claim 1 or 2, wherein: The heat exchange assembly includes a bearing surface for bearing the battery cell, and the distance between the inflow section and the bearing surface is greater than the distance between the outflow section and the bearing surface.

4. The heat exchange assembly according to claim 3, wherein: The bearing surface is a horizontal surface.

5. The heat exchange assembly according to any one of claims 1 to 4, wherein: The heat exchange section includes a first side portion and a second side portion that are relatively distributed along a first direction, the first side portion is arranged lower than the second side portion, the first side portion is communicated with the inflow section, and the second side portion is communicated with the outflow section.

6. The heat exchange assembly according to claim 5, wherein: The heat exchange section extends obliquely from the first side portion toward the second side portion, and the first direction is a direction from the first side portion toward the second side portion.

7. The heat exchange assembly according to claim 6, wherein: In the first direction, the angle between the heat exchange section and the horizontal plane is α, wherein 1°≤α≤15°.

8. The heat exchange assembly according to claim 7, wherein: 5°≤α≤10°。 9. The heat exchange assembly according to any one of claims 5 to 8, wherein: The heat exchange section has a third side and a fourth side relatively distributed along a second direction, the third side is arranged lower than the fourth side, the inflow section is arranged close to the third side, the outflow section is arranged close to the fourth side, and the first direction intersects with the second direction.

10. The heat exchange assembly according to claim 9, wherein: The heat exchange section extends obliquely from the third side portion toward the fourth side portion, and the second direction is a direction from the third side portion toward the fourth side portion.

11. The heat exchange assembly according to claim 10, wherein: In the second direction, the angle between the heat exchange section and the horizontal plane is β, wherein 1°≤β≤15°.

12. The heat exchange assembly according to claim 11, wherein: 5°≤β≤10°。 13. The heat exchange assembly according to any one of claims 10 to 12, wherein: The heat exchange section includes a first bus segment, a second bus segment, and a plurality of heat exchange sub-segments located between the first bus segment and the second bus segment; the first bus segment and the second bus segment extend along the second direction, and the plurality of heat exchange sub-segments are arranged at intervals along the second direction, one end of the heat exchange sub-segment is connected to the first bus segment, and the other end of the heat exchange sub-segment is connected to the second bus segment, the inflow segment is connected to the first bus segment, and the outflow segment is connected to the second bus segment.

14. The heat exchange assembly according to claim 13, wherein: Each of the heat exchange sub-sections is extended along the first direction.

15. The heat exchange assembly according to claim 14, wherein: The first direction and the second direction are perpendicular.

16. The heat exchange assembly according to claim 14 or 15, wherein: The heat exchange assembly comprises a bearing surface for bearing a battery cell, and a projection of an extension direction of the heat exchange sub-segment on the bearing surface is parallel to a long side of the battery cell.

17. The heat exchange assembly according to any one of claims 13 to 16, wherein: The first bus segment has a fifth end and a sixth end, the second bus segment has a seventh end and an eighth end, the fifth end is arranged lower than the sixth end, the seventh end is arranged lower than the eighth end, the fifth end is connected to the inflow segment, and the eighth end is connected to the outflow segment.

18. The heat exchange assembly according to claim 17, wherein: The flow areas of the plurality of heat exchange subsections are the same.

19. The heat exchange assembly according to claim 18, wherein: The flow area of ​​the first busbar segment is the same as the flow area of ​​the second busbar segment.

20. The heat exchange assembly according to claim 18 or 19, wherein: The flow area of ​​the first busbar segment and the flow area of ​​the second busbar segment are equal to the flow area of ​​the heat exchange sub-segment.

21. The heat exchange assembly according to any one of claims 13 to 20, wherein: The flow rate of the heat exchange subsection is Q1, the flow area of ​​the heat exchange subsection is S1, 0.5m / s≤Q1 / S1≤5m / s; and / or, the flow rate of the first bus segment is Q2, the flow area of ​​the first bus segment is S2, 0.5 m / s≤Q2 / S2≤5 m / s; And / or, the flow rate of the second bus segment is Q3, the flow area of ​​the second bus segment is S3, and 0.5 m / s≤Q3 / S3≤5 m / s.

22. The heat exchange assembly according to any one of claims 13 to 21, wherein: The flow area of ​​the heat exchange subsection is S1, 0.00001m 2 ≤S1≤0.001m 2 ; And / or, the flow area of ​​the first bus segment is S2, 0.00001m 2 ≤S2≤0.001m 2 ; And / or, the flow area of ​​the second bus segment is S3, 0.00001m 2 ≤S3≤0.001m 2 .

23. The heat exchange assembly according to any one of claims 1 to 22, wherein: The heat exchange assembly comprises a first heat exchange member and a second heat exchange member, wherein the first heat exchange member has a first surface, and the second heat exchange member has a second surface; The first surface is configured with a first groove, the second surface is sealingly attached to the first surface and seals the opening of the first groove, and the second surface and the groove wall of the first groove are jointly arranged to form the heat exchange channel.

24. The heat exchange assembly according to claim 23, wherein: The second surface is a plane, or a second groove is configured on the second surface, and the first groove and the second groove are butted against each other, so that the groove wall of the first groove and the groove wall of the second groove are jointly enclosed to form the heat exchange channel.

25. The heat exchange assembly according to claim 23 or 24, wherein: The first surface extends obliquely from the inflow section toward the outflow section.

26. The heat exchange assembly according to any one of claims 1 to 25, wherein: The inlet and the outlet are arranged on the side of the heat exchange component close to the battery cell; Alternatively, the outflow port is arranged on a side of the heat exchange component close to the battery cell, and the inflow port is arranged on a side of the heat exchange component facing away from the battery cell.

27. A battery, wherein: The heat exchange component comprises the heat exchange component according to any one of claims 1 to 26.

28. An electrical device, wherein: Comprising the battery of claim 27.

Images