Case, battery, and electric device

Abstract

A box (300), a battery (400) and an electric device (500), the box (300) comprises: a frame (310) and a support plate (320), the support plate (320) is arranged on one side of the frame (310) and surrounds the frame (310) to form a containing space, the support plate (320) comprises: a multi-layer structure plate (321), a buffer layer (322) arranged between adjacent structure plates (321), and a heat exchange element (100) arranged on the side of the structure plate (321) away from the frame (320) and adjacent to the containing space.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a housing, a battery, and an electrical device. Background Technology

[0002] In related technologies, the housing is suitable for accommodating individual battery cells. During the charging and discharging process, individual battery cells generate a large amount of heat. Cooling structures can be used to cool the individual battery cells. When individual battery cells are used in cold environments, their range will be reduced. Heating structures can be used to heat the individual battery cells.

[0003] However, even with the heat exchange plate integrated at the bottom of the enclosure, the reliability of the enclosure still needs further improvement. Summary of the Invention

[0004] This application aims to at least address one of the technical problems existing in the prior art. To this end, embodiments of this application provide a housing, a battery, and an electrical device, which can improve the reliability of the battery, energy storage system, and electrical device by improving the reliability of the housing.

[0005] This application provides a housing, including: a frame and a support plate. The support plate is disposed on one side of the frame and forms an accommodating space with the frame. The support plate includes: a multi-layer structural plate, a buffer layer disposed between adjacent structural plates, and a heat exchanger disposed on the side of the structural plate adjacent to the accommodating space away from the frame. At least one structural plate is connected to the frame.

[0006] According to some embodiments of this application, the heat exchanger includes a first heat exchange channel, which includes a first heat exchange section and a second heat exchange section; the second heat exchange section is bent to form a U-shaped region, and the first heat exchange section is bent and disposed within the U-shaped region and is bent and connected to the second heat exchange section.

[0007] According to some embodiments of this application, the second heat exchange section is located on the outermost side of the first heat exchange channel in the circumferential direction.

[0008] According to some embodiments of this application, the first heat exchange section and the second heat exchange section are bent in the same plane.

[0009] According to some embodiments of this application, the first heat exchange section includes a plurality of first heat exchange parts, which are arranged at intervals and sequentially bent and connected.

[0010] According to some embodiments of this application, a plurality of first heat exchange sections are arranged at intervals along a first direction, and each first heat exchange section extends in a straight line along a second direction, with the first direction and the second direction forming an angle.

[0011] According to some embodiments of this application, the second heat exchange section includes: a second heat exchange portion, a third heat exchange portion, and a fourth heat exchange portion. The second heat exchange portion extends along the first side periphery of the first heat exchange section. The third heat exchange portion is connected between the second heat exchange portion and the first heat exchange section and extends along the second side periphery of the first heat exchange section. The first end of the third heat exchange portion is connected to the second heat exchange portion at an angle, and the second end of the third heat exchange portion is connected to the first heat exchange section at an angle. The fourth heat exchange portion communicates with the second heat exchange portion, is connected to the second heat exchange portion at an angle, and extends along the third side periphery of the first heat exchange section.

[0012] According to some embodiments of this application, a first heat exchange section includes a plurality of first heat exchange portions, which are sequentially bent and connected in a first direction; wherein, a second heat exchange portion is located on one side of the plurality of first heat exchange portions along the first direction, and a third heat exchange portion is located on one side of the plurality of first heat exchange portions along a second direction, the first direction and the second direction being arranged at an angle; a first end of the third heat exchange portion is connected to one end of the second heat exchange portion along the second direction, and a second end of the third heat exchange portion is connected to the first heat exchange portion that is furthest from the second heat exchange portion along the first direction; a fourth heat exchange portion is located on the other side of the plurality of first heat exchange portions along the second direction, and one end of the fourth heat exchange portion is connected to the end of the second heat exchange portion that is furthest from the third heat exchange portion; the fourth heat exchange portion... The other end of the heat exchanger extends away from the second heat exchanger along the first direction; or the second heat exchanger is located on one side of the plurality of first heat exchangers along the second direction, and the third heat exchanger is located on one side of the plurality of first heat exchangers along the first direction, with the first and second directions arranged at an angle; the first end of the third heat exchanger is connected to one end of the second heat exchanger along the first direction, and the second end of the third heat exchanger is connected to the one of the plurality of first heat exchangers that is closest to the third heat exchanger along the first direction; the fourth heat exchanger is located on the other side of the plurality of first heat exchangers along the first direction, and one end of the fourth heat exchanger is connected to the end of the second heat exchanger that is away from the third heat exchanger; the other end of the fourth heat exchanger extends away from the second heat exchanger along the second direction.

[0013] According to some embodiments of this application, the third heat exchange section and the fourth heat exchange section extend along the first direction, and the first heat exchange section and the second heat exchange section both extend along the second direction; or the first heat exchange section, the third heat exchange section and the fourth heat exchange section all extend along the second direction, and the second heat exchange section extends along the first direction.

[0014] According to some embodiments of this application, both the third heat exchange section and the fourth heat exchange section extend along a first direction, and in the first direction, the length of the fourth heat exchange section is less than or equal to the length of the third heat exchange section; or the first heat exchange section and the third heat exchange section extend along a second direction, and the second heat exchange section extends along the first direction, and in the second direction, the length of the third heat exchange section is greater than or equal to the length of the first heat exchange section.

[0015] According to some embodiments of this application, the fourth heat exchange section extends along a first direction and extends to a position close to the one of the plurality of first heat exchange sections that is furthest from the second heat exchange section.

[0016] According to some embodiments of this application, the second heat exchange section further includes a fifth heat exchange portion, which extends along the fourth side periphery of the first heat exchange section and closes at least a portion of the opening of the U-shaped region formed by the second heat exchange portion, the third heat exchange portion and the fourth heat exchange portion.

[0017] According to some embodiments of this application, the fifth heat exchange section is arranged opposite to the second heat exchange section, the fifth heat exchange section is connected between the second end of the third heat exchange section and the first heat exchange section, and is connected at an angle to the third heat exchange section and at an angle to the first heat exchange section; or, one end of the fifth heat exchange section is connected to the end of the fourth heat exchange section away from the second heat exchange section, and the fifth heat exchange section is connected at an angle to the fourth heat exchange section.

[0018] According to some embodiments of this application, the first heat exchange channel further includes a third heat exchange section, wherein the first heat exchange section is connected between the third heat exchange section and the second heat exchange section, and the third heat exchange section and the first heat exchange section are connected at an angle.

[0019] According to some embodiments of this application, the first heat exchange section includes a plurality of first heat exchange parts, which are sequentially bent and connected in a first direction; the third heat exchange section is arranged on the side of the first heat exchange section away from the third heat exchange part, and the third heat exchange section is connected to the one of the plurality of first heat exchange parts that is closest to the second heat exchange part in the first direction.

[0020] According to some embodiments of this application, the third heat exchange section extends along a first direction toward a direction away from the second heat exchange section, and the first heat exchange section extends along a second direction, wherein the first direction and the second direction are arranged at an angle.

[0021] According to some embodiments of this application, the third heat exchange section extends along a first direction to a position close to the one of the plurality of first heat exchange sections that is furthest from the second heat exchange section.

[0022] According to some embodiments of this application, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; or, the heat exchanger is configured such that: when heating the battery assembly, the first heat exchange section is connected downstream of the second heat exchange section along the fluid flow direction; and when cooling the battery assembly, the first heat exchange section is connected upstream of the second heat exchange section along the fluid flow direction.

[0023] According to some embodiments of this application, the housing has one or more heat exchange channels. When there are multiple heat exchange channels, the multiple heat exchange channels are arranged at intervals along a first direction or arranged around each other. At least one heat exchange channel is formed as a first heat exchange channel, and the multiple heat exchange channels are arranged in parallel.

[0024] According to some embodiments of this application, a plurality of heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels; and the two first heat exchange channels are arranged symmetrically about the center line of the housing along a second direction, wherein the second direction is set at an angle to the first direction.

[0025] According to some embodiments of this application, a plurality of heat exchange channels are arranged symmetrically about the centerline of the housing along a second direction.

[0026] According to some embodiments of this application, the plurality of heat exchange channels further includes: at least one second heat exchange channel, the second heat exchange channel being disposed between two first heat exchange channels, wherein the structure of any second heat exchange channel is the same as or different from the structure of the first heat exchange channel.

[0027] According to some embodiments of this application, the second heat exchange channel includes a plurality of fourth heat exchange sections, which are connected sequentially, wherein the fourth heat exchange sections extend along a second direction, and the plurality of fourth heat exchange sections are arranged at intervals in a first direction.

[0028] According to some embodiments of this application, the heat exchanger has multiple heat exchange channels, including a first heat exchange channel and at least one fourth heat exchange channel. The fourth heat exchange channel is bent within the U-shaped region of the first heat exchange channel, and the first and fourth heat exchange channels are bent in the same plane. The bending structures of the first and fourth heat exchange channels are the same or different.

[0029] According to some embodiments of this application, the fourth heat exchange channel includes a U-shaped region with the same structure as the first heat exchange channel, and at least a portion of the first heat exchange section of the first heat exchange channel is disposed within the U-shaped region of the fourth heat exchange channel.

[0030] According to some embodiments of this application, the U-shaped region of the first heat exchange channel is located on the outermost circumferential direction of the heat exchanger.

[0031] According to some embodiments of this application, the housing includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along a first direction, and each heat exchange tube defines a heat exchange flow channel on its inner side.

[0032] According to some embodiments of this application, the buffer layer is constructed as a porous structure.

[0033] According to some embodiments of this application, the holes in the buffer layer extend in opposite directions along adjacent structural plates.

[0034] According to some embodiments of this application, the buffer layer is constructed of a plastic material or a metal material; when the buffer layer is constructed of a plastic material, the buffer layer is heat-fused to the structural plate; when the buffer layer is constructed of a metal material, the buffer layer is brazed to the structural plate.

[0035] According to some embodiments of this application, the structural plate includes: a first structural plate to an Nth structural plate arranged sequentially in the arrangement direction of the frame and the support plate, where N≥2, and at least the first structural plate and the Nth structural plate are connected to the frame.

[0036] According to some embodiments of this application, a connecting flange is provided on the side of the frame facing the support plate, the structural size of the buffer layer is smaller than the structural size of the structural plate to define the slot, and the connecting flange extends into the slot; or the connecting flange overlaps the first structural plate.

[0037] According to some embodiments of this application, the minimum overlap dimension between the structural plate and the connecting flange is 6 mm.

[0038] According to some embodiments of this application, the structural dimensions of the first structural plate are smaller than those of the Nth structural plate, and the first structural plate is connected to the connecting flange, while the Nth structural plate is connected to the end face of the frame; or the structural dimensions of the first structural plate are equal to those of the Nth structural plate, and both the first and Nth structural plates are connected to the connecting flange.

[0039] This application provides a battery, including: the housing in the above embodiments.

[0040] This application provides an electrical device, including the battery described in the above embodiments.

[0041] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0042] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an electrical device according to an embodiment of this application; Figure 2 This is a schematic diagram of a battery according to an embodiment of this application; Figure 3 This is a schematic diagram of the battery assembly and heat exchanger according to the first embodiment of this application; Figure 4 This is a schematic diagram of the battery assembly and heat exchanger according to the second embodiment of this application; Figure 5 This is a schematic diagram of the battery assembly and heat exchanger according to the third embodiment of this application; Figure 6 This is a schematic diagram of the battery assembly and heat exchanger according to the fourth embodiment of this application; Figure 7This is a schematic diagram of the battery assembly and heat exchanger according to the fifth embodiment of this application; Figure 8 This is a schematic diagram of the heat exchanger and battery housing according to some embodiments of this application; Figure 9 These are schematic diagrams of heat exchangers and housings according to other embodiments of this application; Figure 10 This is a schematic diagram of the battery assembly and heat exchanger according to the sixth embodiment of this application; Figure 11 This is a schematic diagram of the battery assembly and heat exchanger according to the seventh embodiment of this application; Figure 12 This is a schematic diagram of the battery assembly and heat exchanger according to the eighth embodiment of this application; Figure 13 This is a schematic diagram of the battery assembly and heat exchanger according to the ninth embodiment of this application; Figure 14 This is a schematic diagram of a battery assembly and heat exchanger according to the tenth embodiment of this application; Figure 15 This is a schematic diagram of the battery assembly and heat exchanger according to the eleventh embodiment of this application; Figure 16 This is a schematic diagram of the disassembled box body according to an embodiment of this application; Figure 17 This is a schematic diagram of a support plate according to an embodiment of this application; Figure 18 This is an exploded view of the support plate according to an embodiment of this application; Figure 19 This is a partially enlarged schematic diagram of the buffer layer according to an embodiment of this application; Figure 20 This is a partial schematic diagram illustrating the cooperation between a support plate and a frame according to an embodiment of this application; and Figure 21 This is a partial schematic diagram of another cooperation between a support plate and a frame according to an embodiment of this application. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0046] During operation, individual battery cells generate significant heat. If this heat cannot be dissipated in time, the operating temperature of the battery cells will become too high, potentially leading to thermal runaway. Conversely, in cold environments, the activation energy of the electrolyte within the battery cells decreases, resulting in reduced battery efficiency and a shortened driving range. Therefore, a temperature regulation structure is needed to adjust the operating temperature of the battery cells, preventing them from becoming too hot, improving their stability and reliability, reducing the probability of thermal runaway, and preventing them from becoming too cold, thus maintaining stable performance, improving or even preventing a reduction in driving range, enhancing the user experience, and expanding the application scenarios.

[0047] A single battery cell can be a rechargeable battery. A rechargeable battery is a battery cell that can be recharged after it has been discharged, allowing the active materials to be activated and the cell to continue to be used.

[0048] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this utility model embodiment is not limited to this.

[0049] The battery mentioned in the embodiments of this utility model refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed through a busbar.

[0050] In some embodiments, multiple battery cells can be combined to form a battery cell, that is, when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery cell.

[0051] In some embodiments, the battery includes a housing and battery cells, with at least one battery cell or at least one battery unit housed in the housing, the housing having a receiving space, and at least one battery cell or at least one battery unit housed in the receiving space.

[0052] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0053] In some embodiments, the battery or battery cell may be part of an energy storage system. The energy storage system may be an energy storage container, an energy storage cabinet, etc., which integrates batteries and an energy shutdown module.

[0054] The development of battery technology must take into account multiple design factors, such as energy density, cycle life, discharge capacity, charge / discharge rate, and other performance parameters. In addition, battery safety performance also needs to be considered.

[0055] The technical solutions described in this utility model embodiment are applicable to batteries and electrical devices that use batteries.

[0056] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This embodiment of the invention does not impose any special limitations on the above-mentioned electrical devices.

[0057] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0058] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided for some embodiments of the present invention. A battery 400 is installed inside the vehicle, and the battery 400 can be located at the bottom, front, or rear of the vehicle. The battery 400 can be used to power the vehicle; for example, the battery 400 can serve as the vehicle's operating power source.

[0059] The vehicle may also include a controller 600 and a motor 700. The controller 600 controls the battery 400 to supply power to the motor 700, which serves as a load, for example, to meet the power requirements of the vehicle during starting, navigation, and driving.

[0060] In some embodiments of this utility model, the battery 400 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0061] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery 400 provided for some embodiments of the present invention. The battery 400 includes a battery cell 201 and a housing 300, the housing 300 being used to house the battery cell 201.

[0062] The housing 300 is a component that houses the battery cells 201. The housing 300 provides placement space for multiple battery cells 2011 within the battery cells 201. The housing 300 can adopt various structures. In some embodiments, the housing 300 may include a tray and the housing 300, which overlap to define a placement space for accommodating the battery cells 2011. The tray and housing 300 can be of various shapes, such as cuboids, cylinders, etc. The tray can be a hollow structure open on one side, and the housing 300 can also be a hollow structure open on one side, with the open side of the housing 300 overlapping the open side of the tray, thus forming a housing 300 with placement space. Alternatively, the tray can be a hollow structure open on one side, and the housing 300 can be a plate-like structure, with the housing 300 overlapping the open side of the tray, thus forming a housing 300 with placement space. As an example, the battery cell 2011 can be a cylindrical battery cell 2011, a prismatic battery cell 2011, a pouch battery cell 2011, or a battery cell 2011 of other shapes. This utility model has no particular limitations.

[0063] In battery 400, there can be one or more battery cells 2011. If there are multiple battery cells 2011, they can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 2011 are connected in both series and parallel. Alternatively, multiple battery cells 2011 can be first connected in series, parallel, or in a mixed configuration to form a battery unit 201, and then the multiple battery units 2011 can be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the casing 300. Another option is that all battery cells 2011 can be directly connected in series, parallel, or in a mixed configuration, and then the whole consisting of all battery cells 2011 is housed within the casing 300.

[0064] In the battery 400, the heat exchanger 100 can be disposed between the multiple battery cells 2011 and the top wall of the housing 300, between the multiple battery cells 2011 and the bottom wall of the housing 300, between the bottom wall of the housing 300 and the bottom protective plate, or between two adjacent battery cells 2011, to provide heat exchange for the multiple battery cells 2011. In this embodiment, the heat exchanger 100 may include a heat exchange tube integrated into the bottom wall of the housing 300. The heat exchange tube may be a flat tube, a round tube, a harmonica tube, or other shaped tube.

[0065] The battery cell 2011 serves as the smallest energy unit in the battery unit 201 and battery 400. The battery unit 201 or battery 400 includes multiple battery cells 2011. Each battery cell 2011 includes a large surface of the battery 400 defined by its width and length edges, a small surface of the battery 400 defined by its width and height edges, and an end surface of the battery 400 defined by its length and width edges. To enable the battery cell 2011 to operate in cold environments, [details about the battery cell 2011 are missing]. An additional heat film is attached to the surface of the battery cell 2011 (such as the large surface, small surface, or end face of the battery 400) to heat the battery cell 2011. At the same time, a cooling structure can be set on the large surface, small surface, or end face of the battery 400 to cool the battery cell 2011 and thus cool the battery 400 as a whole. Alternatively, a heat exchange structure can be set on the large surface, small surface, or end face of the battery 400 to achieve both cooling and heating.

[0066] However, in the existing technology, the heat exchange plate can be set on the bottom surface of the housing 300, which requires the setting of a sealing structure that cooperates with the heat exchange plate, such as a sealing gasket, a mounting structure, and an installation structure. This results in a complex overall structure of the battery 400, a large number of parts, cumbersome installation, and high cost. The number of sealing interfaces between the heat exchange plate and the housing 300 is also large, resulting in higher sealing costs. The heat exchange plate uses more materials and has a more complex process, which also increases costs. At the same time, both the bottom plate and the heat exchange plate are planar structures, and the bottom plate is used for load-bearing and the heat exchange plate needs to be set on it, which reduces the bottom profile of the housing 300, resulting in a poor bottom profile of the housing 300.

[0067] In view of this, this utility model embodiment provides a housing 300, the bottom plate (i.e., support plate 320) of the housing 300 is constructed as a multi-layer structure plate 321, a buffer layer 322 is provided between adjacent structure plates 321, and a heat exchanger 100 is provided below the uppermost structure plate 321. The support plate 320 is constructed as an integrated plate structure, eliminating the need for a separate heat exchanger plate structure. On the one hand, this simplifies the structure of the housing 300, making the overall structure of the battery 400 simpler, with fewer parts, lower installation difficulty, and lower cost, and can also reduce Reducing the number of sealing components and sealing interfaces lowers sealing costs and improves sealing performance. On the other hand, the structural strength and rigidity of the support plate 320 can be improved through the buffer layer 322. The weight of the cooling components set in the support plate 320 is much lower than the structural weight of the heat exchange plate, which can reduce the load on the support plate 320 and improve its structural rigidity. This improves the bottom profile of the housing 300, making the bottom surface of the housing 300 flatter, reducing the probability of scratches and bottoming out, extending service life, and increasing stability.

[0068] The following is for reference. Figures 1-21 This application describes a housing 300, a battery 400, an energy storage system, and an electrical appliance according to embodiments thereof.

[0069] like Figure 2 and Figure 16 As shown, this application embodiment provides a box 300, including: a frame 310 and a support plate 320. The support plate 320 is disposed on one side of the frame 310 and forms an accommodating space with the frame 310. The support plate 320 includes: a multi-layer structural plate 321, a buffer layer 322 disposed between adjacent structural plates 321, and a heat exchanger 100 disposed on the side of the structural plate 321 adjacent to the accommodating space away from the frame 310. At least one structural plate 321 is connected to the frame 310.

[0070] Taking the front-to-back direction (length direction) of the housing 300 as the first direction (i.e., the Z direction in the figure), the left-to-right direction (width direction) as the second direction (i.e., the Y1 direction in the figure), and the up-to-down direction (height direction) as the third direction (i.e., the X1 direction in the figure) as an example, the housing 300 of this application embodiment will be specifically described.

[0071] The frame 310 is generally a rectangular frame and has a first opening and a second opening opposite each other in the height direction. The support plate 320 is set at the bottom of the frame 310 and is suitable for blocking the first opening. The housing 300 can also be provided with a cover plate 330, which is suitable for blocking the second opening, so that the housing 300 forms a selectively openable and closable accommodating space, which is suitable for accommodating components such as the battery cell 2011 and the battery management unit 400.

[0072] The support plate 320 can be constructed as a sandwich plate structure or a multi-layer sandwich plate structure, including at least two structural plates 321, and a buffer layer 322 can be provided between adjacent structural plates 321. A heat exchanger 100 can be provided on the lower surface of the uppermost structural plate 321 (i.e. the side of the structural plate 321 adjacent to the accommodating space that is away from the frame 310) to improve the structural strength and rigidity of the support plate 320 through the buffer layer 322. The temperature regulation (e.g., heating or cooling) of the battery cell 2011 can be achieved by the heat exchanger 100 provided inside the support plate 320.

[0073] The support plate 320, which is the bottom plate of the housing 300, integrates the structural plate 321, heat exchanger 100, and buffer layer 322 into a composite plate. This eliminates the need for a separate heat exchanger plate, thus integrating thermal management functions. It also eliminates the need for a matching heat exchanger plate mounting structure, installation structure, and sealing structure, simplifying the structure of the housing 300, reducing installation steps, lowering installation difficulty, reducing costs, and improving the reliability of the housing 300. Furthermore, it reduces the number of sealing interfaces, forming only a sealing interface between the frame 310 and the support plate 320, making sealing easier and cheaper. The buffer layer 322 improves the structural rigidity and strength of the support plate 320, resulting in a smoother and more defined lower surface of the housing 300, reducing the probability of scratches and bottoming out, improving the stability and reliability of the housing 300, and extending its service life.

[0074] According to the embodiment of this application, the support plate 320 of the housing 300 adopts an integrated composite plate structure of structural plate 321, buffer layer 322 and heat exchange component 100. This not only simplifies the structure of housing 300, reduces installation difficulty and the number of sealing interfaces, thereby reducing the sealing cost and production cost of housing 300, but also improves the structural strength and rigidity of housing 300, thereby improving the bottom profile of housing 300, improving the reliability and stability of housing 300, and extending the service life of housing 300.

[0075] This application provides a heat exchanger 100, such as... Figure 3 As shown, the heat exchanger 100 is used in the battery 400. The heat exchanger 100 includes a first heat exchange channel 10, which includes a first heat exchange section 11 and a second heat exchange section 12. The second heat exchange section 12 is bent to form a U-shaped region 120. The first heat exchange section 11 is bent and disposed within the U-shaped region 120 and is bent and connected to the second heat exchange section 12.

[0076] The battery 400 may include multiple battery cells 2011. The first heat exchange channel 10 is used to exchange heat with the multiple battery cells 2011 of the battery 400, so that the temperature of the battery 400 can be limited within the safe operating temperature, ensuring the operational reliability of the battery 400.

[0077] The above-mentioned "the second heat exchange section 12 is bent to form a U-shaped region 120, and the first heat exchange section 11 is bent and disposed within the U-shaped region 120" is intended to illustrate that the second heat exchange section 12 is disposed on the circumferential periphery of the first heat exchange section 11, and can be arranged on the three circumferential sides of the first heat exchange section 11. The second heat exchange section 12 can be arranged closer to the periphery of the battery 400 relative to the first heat exchange section 11.

[0078] The second heat exchange section 12 is bent to form a U-shaped region 120, that is, in the direction from one end of the second heat exchange section 12 to the other end, the second heat exchange section 12 extends along the lines of the U-shape to form a U-shaped region 120.

[0079] The first heat exchange section 11 is bent within the U-shaped area 120, that is, the first heat exchange section 11 is arranged within the space enclosed by the second heat exchange section 12, and the first heat exchange section 11 extends non-linearly on the inner side of the second heat exchange section 12, having at least one bent position.

[0080] In this embodiment, the bending of the first heat exchange section 11 is limited to being located within the U-shaped region 120, but the bending form of the first heat exchange section 11 is not limited. That is, the specific bending form of the first heat exchange section 11 can be designed according to the heat exchange requirements of the battery 400. For example, the first heat exchange section 11 can be along the length direction of the battery cell 2011 (i.e., Figure 3 It extends in the Y1 direction and then, after reaching a certain length, moves towards the width direction of the battery cell 2011 (i.e., the width direction of the cell). Figure 3 The first heat exchange section 11 can bend along the width direction of the battery cell 2011 (in the X1 direction), and then continue to extend along the length direction of the battery cell 2011 and bend along the width direction. Alternatively, the first heat exchange section 11 can extend along the width direction of the battery cell 2011 and bend towards the length direction of the battery cell 2011 after extending to a certain length, and then continue to extend along the width direction of the battery cell 2011 and bend along the length direction.

[0081] The first heat exchange section 11 and the second heat exchange section 12 are connected by bending. That is, one end of the first heat exchange section 11 and one end of the second heat exchange section 12 are connected, and the connection position of the first heat exchange section 11 and the second heat exchange section 12 is a bent non-linear structure. For example, the connection position of the first heat exchange section 11 and the second heat exchange section 12 can be bent into an arc.

[0082] The first heat exchange section 11 and the second heat exchange section 12 are connected. Thus, one of the ends of the first heat exchange section 11 away from the second heat exchange section 12 and the other end of the second heat exchange section 12 away from the first heat exchange section 11 can be used as the liquid inlet and the other can be used as the liquid outlet. Therefore, when the first heat exchange channel 10 is performing heat exchange, the heat exchange medium can flow from the first heat exchange section 11 to the second heat exchange section 12, or from the second heat exchange section 12 to the first heat exchange section 11.

[0083] As the heat exchange fluid flows through the first heat exchange channel 10, its temperature gradually changes, leading to a gradual decrease in heat exchange efficiency. For example, when the heat exchanger 100 cools the battery assembly 200, the heat from the individual battery cells 2011 is gradually transferred to the heat exchange fluid, causing the temperature of the heat exchange fluid to gradually increase as it flows along the first heat exchange channel 10. This results in a gradual decrease in the temperature difference between the heat exchange fluid and the individual battery cells 2011, and a gradual reduction in heat exchange efficiency. Conversely, when the heat exchanger 100 heats the battery assembly 200, the heat from the heat exchange fluid is gradually transferred to the individual battery cells 2011, causing the temperature of the heat exchange fluid to gradually decrease as it flows along the first heat exchange channel 10. This results in a gradual decrease in the temperature difference between the heat exchange fluid and the individual battery cells 2011, and a gradual reduction in heat exchange efficiency.

[0084] In this embodiment, when the heat exchanger 100 cools the battery assembly 200, the heat exchange fluid can flow from the first heat exchange section 11 to the second heat exchange section 12, or vice versa. When the heat exchange fluid also flows from the first heat exchange section 11 to the second heat exchange section 12, the battery cells 2011 in the middle of the battery 400 (i.e., the inner battery cells 2011 on the outer periphery) can be cooled first, and then the battery cells 2011 at the periphery of the battery 400 can be cooled. Since the heat dissipation of the battery cells 2011 at the periphery of the battery 400 is better than that of the inner battery cells 2011, the lower-temperature heat exchange fluid in the first heat exchange section 11 can better meet the heat dissipation requirements of the battery cells 2011 in the middle of the battery 400. The battery cells 2011 at the periphery can directly face the external environment for natural heat dissipation. When the temperature of the heat exchange fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation requirements of the peripheral battery cells 2011. This makes the cooling effect of the battery cells 2011 at the periphery of the battery 400 and the battery cells 2011 at the center of the battery 400 roughly the same. Consequently, the temperature of the battery cells 2011 at the periphery of the battery 400 and the battery cells 2011 at the center of the battery 400 is relatively consistent after cooling, making the temperature distribution inside the battery 400 more uniform.

[0085] When the heat exchanger 100 heats the battery assembly 200, the heat exchange fluid can flow from the first heat exchange section 11 to the second heat exchange section 12, or vice versa. For example, when the heat exchange fluid flows from the second heat exchange section 12 to the first heat exchange section 11, it can first heat the battery cells 2011 surrounding the battery assembly 200, and then cool the battery cells 2011 in the middle of the battery assembly 200. Since the battery cells 2011 surrounding the battery 400 dissipate more heat to the external environment, their temperature drops more easily. By first heating the battery cells 2011 surrounding the battery 400, the higher-temperature heat exchange fluid can compensate for the heat lost by the battery cells 2011 due to heat dissipation to the external environment while raising their temperature. To meet its heating needs, the battery cells 2011 in the middle of the battery module 200 have a small contact area with the external environment, resulting in less heat loss. The lower-temperature heat exchange fluid flowing in the first heat exchange section 11 can work well with the heat generated by the battery cells 2011 themselves to meet their heating needs. As a result, the heating effect obtained by the battery cells 2011 on the periphery of the battery 400 and the battery cells 2011 in the middle of the battery module 200 is basically the same. Consequently, the temperature of the battery cells 2011 on the periphery of the battery 400 and the battery cells 2011 in the middle of the battery module 200 is more consistent after heating, making the temperature distribution inside the battery 400 more uniform.

[0086] In the above embodiment, by bending the second heat exchange section 12 to form a U-shaped region 120, and bending the first heat exchange section 11 within the U-shaped region 120, when the heat exchange component 100 exchanges heat with the battery assembly 200, the U-shaped region 120 formed by the outer second heat exchange section 12 can be aligned with the outer battery cells, and the first heat exchange section 11 within the U-shaped region 120 can be aligned with the inner battery cells. This allows the heat exchange component 100 to compensate for the internal and external temperature difference caused by the heat exchange between the outer battery cells 2011 and the environment, making the heat exchange effect of the outer battery cells 2011 and the inner battery cells 2011 of the battery assembly 200 more consistent, improving the temperature uniformity of the battery 400, thereby improving the service life of the battery 400 to a certain extent.

[0087] According to some embodiments of this application, such as Figure 3 As shown, the second heat exchange section 12 can be located on the outermost side of the circumference of the first heat exchange channel 10.

[0088] The second heat exchange section 12 is formed as the outermost flow channel of the first heat exchange flow channel 10. In this way, the second heat exchange section 12 can be used to exchange heat with the battery cells 2011 around the battery 400, thereby improving the temperature uniformity of the battery cells 2011 around the battery 400.

[0089] In the above embodiment, by setting the second heat exchange section 12 to be located at the outermost circumferential direction of the first heat exchange channel 10, the second heat exchange section 12 can exchange heat with the battery cells 2011 on the outer circumferential direction of the battery module 200, which is beneficial to improve the internal and external temperature difference of the battery module 200 caused by heat exchange with the environment, and to a certain extent improve the service life of the battery module 200.

[0090] According to some embodiments of this application, the first heat exchange section 11 and the second heat exchange section 12 can be bent in the same plane.

[0091] In the above embodiments, by setting the first heat exchange section 11 and the second heat exchange section 12 to be bent in the same plane, the first heat exchange channel 10 can exchange heat with the battery 400 in the same plane. This simplifies the structure of the first heat exchange channel 10, reduces the manufacturing difficulty of the first heat exchange channel 10, and also reduces the space occupied by the first heat exchange channel 10, thereby increasing the volumetric energy density of the battery 400.

[0092] According to some embodiments of this application, such as Figures 3-4 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, which are arranged at intervals and connected by bending in sequence.

[0093] Multiple first heat exchange sections 111 are connected sequentially, and the connection point between two connected first heat exchange sections 111 is bent. For example, two connected first heat exchange sections 111 can be bent along a zigzag line or along an arc. The number of first heat exchange sections 111 can be two, three, four, five or more.

[0094] The shape of the first heat exchange section 111 can be varied, for example, it can be a straight line or an arc. The extension direction of the first heat exchange section 111 can also be varied, for example, it can extend along the length direction or the thickness direction of the battery cell 2011. In this way, multiple first heat exchange sections 111 are sequentially bent and connected, so that the first heat exchange section 11 can form a heat exchange flow channel in the form of S-shape, Z-shape, V-shape, etc.

[0095] In the above embodiments, on the one hand, by providing multiple first heat exchange sections 111, the heat exchange area of ​​the first heat exchange section 11 can be increased, thereby increasing the heat exchange area of ​​the first heat exchange channel 10, and thus improving the heat exchange effect of the first heat exchange channel 10; on the other hand, since the internal battery cells are wrapped by the external battery cells, the temperature difference between the internal battery cells is not large. Therefore, by providing multiple first heat exchange sections 111, the overall heat exchange effect can be guaranteed while ensuring that the temperature difference between the internal and external battery cells is small.

[0096] According to some embodiments of this application, such as Figure 3 As shown, multiple first heat exchange sections 111 are arranged along a first direction (i.e., Figure 4 The first heat exchange section 111 is arranged at intervals along the Y1 direction (as shown), and each first heat exchange section 111 is arranged along the second direction (i.e., Figure 4 The X1 direction shown extends in a straight line, with the first direction and the second direction forming an angle.

[0097] The phrase "the first direction and the second direction are arranged at an angle" is intended to illustrate that the first and second directions can be arranged perpendicularly or only intersecting but not perpendicularly. For example, the first and second directions can be arranged at an angle of 30°, 60°, 80°, 120°, 150°, or 170°. Figure 4 As shown, the first direction is the length direction of the battery cell 2011, and the second direction is the thickness direction of the battery cell 2011. The first heat exchange section 111 extends along the length direction of the battery cell 2011 and is arranged at intervals along the thickness direction of the battery cell 2011. In this way, multiple first heat exchange sections 111 can be bent and connected to form an S-shaped heat exchange channel, which can achieve heat exchange for multiple battery cells 2011.

[0098] In the above embodiments, by setting the first heat exchange section 111 to extend in a straight line along the second direction, the production difficulty of the first heat exchange section 111 can be reduced, thereby reducing the production complexity of the first heat exchange channel 10. At the same time, the straight pipe can also increase the flow velocity of the heat exchange fluid, thereby improving the heat exchange effect of the first heat exchange channel 10.

[0099] According to some embodiments of this application, such as Figure 3 As shown, the first heat exchange section 11 may further include a first bending section 112, which is arc-shaped and bends between two adjacent first heat exchange sections 111.

[0100] The first bend 112 is arc-shaped, meaning it extends along an arc. The fluid flow directions at both ends of the first bend 112 form a certain angle. This allows the first bend 112 to change the fluid flow direction, enabling the two connected first heat exchange sections 111 to extend and arrange within a predetermined area. This increases the heat exchange area of ​​the first heat exchange section 11 and improves its heat exchange efficiency. Simultaneously, the arc shape of the first bend 112 reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange section 11.

[0101] The number of first bends 112 can be one, two, three or more. The first bends 112 can make the first heat exchange section 11 arranged in a roundabout way, thereby increasing the heat exchange area of ​​the first heat exchange channel 10 and improving the heat exchange efficiency of the first heat exchange channel 10.

[0102] In the above embodiment, by providing the first bending portion 112, the fluid flow direction inside the first heat exchange section 11 can be changed, achieving a smooth transition connection between the two first heat exchange sections 111 and realizing the tortuous extension of the first heat exchange channel 10. This increases the contact area between a single battery cell and the first heat exchange channel 10, thereby increasing the heat exchange area and improving the heat exchange efficiency of the first heat exchange channel 10. Simultaneously, the arc shape of the first bending portion 112 reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange section 11. Furthermore, the provision of the first bending portion 112 makes the structure of the first heat exchange section 11 more compact, occupying a smaller overall space, which is more conducive to the miniaturization design of the battery 400 and ensures the volumetric energy density of the battery 400.

[0103] According to some embodiments of this application, such as Figure 3 As shown, the first bend 112 can be semi-circular.

[0104] The first bend 112 can extend along a semi-circular arc. Specifically, the first bend 112 can extend along a semi-circular arc that protrudes away from the direction of the two first heat exchange sections 111 connected by the first bend 112. The angle between the inlet and outlet of the first bend 112 is 180°, and the flow directions at the outlet and inlet positions of the first bend 112 are opposite. This brings the two adjacent first heat exchange sections 111 closer together, making the structure of the entire first heat exchange section 11 more compact and reliable. The first bend 112 is used to connect two parallel and spaced-apart first heat exchange sections 111. In other embodiments, the bend angle of the first bend 112 can be adjusted according to requirements, for example, it can be 150°, 135°, etc., and the embodiments of this application are not limited thereto. Two first heat exchange sections 111 can be connected by a first bending section 112 to form a "U"-shaped heat exchange channel. The first heat exchange section 11 can contain one or more "U"-shaped heat exchange channels. Multiple "U"-shaped heat exchange channels are connected in sequence, and the connected "U"-shaped heat exchange channels are connected by the first bending section 112.

[0105] In the above embodiments, by setting the first bending portion 112 to be semi-circular, the design diversity of the heat exchange channel can be increased, thereby improving the compatibility between the heat exchange component 100 and the battery 400; at the same time, the semi-circular structure is relatively simple, thereby reducing the production difficulty of the heat exchange component 100 and increasing the production speed of the heat exchange component 100.

[0106] According to some embodiments of this application, such as Figure 3 As shown, the second heat exchange section 12 may include: a second heat exchange part 121, a third heat exchange part 122, and a fourth heat exchange part 125. The second heat exchange part 121 extends along the first side periphery of the first heat exchange section 11. The third heat exchange part 122 is connected between the second heat exchange part 121 and the first heat exchange section 11 and extends along the second side periphery of the first heat exchange section 11. The first end of the third heat exchange part 122 is connected to the second heat exchange part 121 at an angle, and the second end of the third heat exchange part 122 is connected to the first heat exchange section 11 at an angle. The fourth heat exchange part 125 communicates with the second heat exchange part 121, is connected to the second heat exchange part 121 at an angle, and extends along the third side periphery of the first heat exchange section 11.

[0107] The fourth heat exchange section 125 is connected to the end of the second heat exchange section 121 away from the third heat exchange section 122. The fourth heat exchange section 125, the second heat exchange section 121 and the third heat exchange section 122 are connected in sequence to form a U-shaped region 120. The first heat exchange section 11 is arranged in the U-shaped region 120 and is connected to the end of the third heat exchange section 122 away from the second heat exchange section 121.

[0108] The first end of the third heat exchange section 122 is connected to the second heat exchange section 121 at an angle, meaning that the third heat exchange section 122 is connected to the second heat exchange section 121, and the third heat exchange section 122 and the second heat exchange section 121 are not collinear or parallel, but are arranged at an angle greater than 0° and less than 180°. For example, the third heat exchange section 122 is connected to the second heat exchange section 121 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0109] The second end of the third heat exchange section 122 is connected to the first heat exchange section 11 at an angle; that is, the second end of the third heat exchange section 122 is connected to the second heat exchange section 121, and the second end of the third heat exchange section 122 is arranged at an angle greater than 0° and less than 180° to the first heat exchange section 11. For example, the second end of the third heat exchange section 122 is connected to the first heat exchange section 11 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0110] The fourth heat exchange section 125 is connected to the second heat exchange section 121 at an angle, that is, the fourth heat exchange section 125 is connected to the second heat exchange section 121 at an angle greater than 0° and less than 180°. For example, the fourth heat exchange section 125 is connected to the second heat exchange section 121 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0111] This embodiment defines the second heat exchange section 12 as being arranged on three sides of the first heat exchange section 11 in the circumferential direction, and does not define the specific positions of the second heat exchange section 121, the third heat exchange section 122, and the fourth heat exchange section 125 relative to the first heat exchange section 11. Therefore, the specific positions of the second heat exchange section 121, the third heat exchange section 122, and the fourth heat exchange section 125 can be designed according to actual conditions. For example, if the second heat exchange section 121 can be arranged on one side of the first heat exchange section 11 in the first direction, then the third heat exchange section 122 and the fourth heat exchange section 125 can be arranged on both sides of the first heat exchange section 11 in the second direction; if the second heat exchange section 121 is arranged on one side of the first heat exchange section 11 in the second direction, then the third heat exchange section 122 and the fourth heat exchange section 125 can be arranged on both sides of the first heat exchange section 11 in the first direction.

[0112] In the above embodiment, by arranging the second heat exchange section 121, the third heat exchange section 122, and the fourth heat exchange section 125 on three sides of the first heat exchange section 11, the second heat exchange section 12 can surround the first heat exchange section 11, thereby increasing the compactness of the arrangement of the first heat exchange channel 10, realizing the miniaturization of the structure of the first heat exchange channel 10, which is beneficial to ensuring the volumetric energy density of the battery 400. At the same time, it can also simplify the structure of the first heat exchange channel 10 and facilitate the processing and production of the heat exchange component 100.

[0113] According to some embodiments of this application, such as Figure 3As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, which are sequentially bent and connected in a first direction; the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along the first direction, and the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 along a second direction, with the first and second directions arranged at an angle; the first end of the third heat exchange part 122 is connected to one end of the second heat exchange part 121 along the second direction, and the second end of the third heat exchange part 122 is connected to the one of the plurality of first heat exchange parts 111 that is furthest from the second heat exchange part 121 along the first direction; the fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the second direction, and one end of the fourth heat exchange part 125 is connected to the end of the second heat exchange part 121 that is furthest from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the first direction in a direction furthest from the second heat exchange part 121.

[0114] Multiple first heat exchange sections 111 are sequentially bent and connected in a first direction. That is, multiple first heat exchange sections 111 are arranged sequentially in the first direction, and adjacent and connected first heat exchange sections 111 are bent and connected in the first direction. The first heat exchange section 111 can extend along a straight line parallel to the second direction, or the first heat exchange section 111 can extend along a straight line arranged at an angle to the second direction, or the first heat exchange section 111 can extend along a curve and / or a broken line in the second direction.

[0115] The fourth heat exchange section 125, the second heat exchange section 121, the third heat exchange section 122 and the first heat exchange section 111 that is furthest from the second heat exchange section 121 are connected in sequence, and the multiple first heat exchange sections 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange fluid can flow sequentially through the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122, and then enter the first heat exchange section 11. In the first heat exchange section 11, the fluid first passes through the first heat exchange section 111 furthest from the second heat exchange section 121, and finally flows to the first heat exchange section 111 closest to the second heat exchange section 121. Alternatively, the heat exchange fluid can first flow into the first heat exchange section 11, and in the first heat exchange section 11, the fluid first flows through the first heat exchange section 111 closest to the second heat exchange section 121, flows out from the first heat exchange section 111 furthest from the second heat exchange section 121, and then flows to the third heat exchange section 122, and then flows sequentially through the second heat exchange section 121 and the fourth heat exchange section 125 through the third heat exchange section 122.

[0116] The phrase "the first direction and the second direction are arranged at an angle" is intended to indicate that the first direction and the second direction can be arranged perpendicularly or they can be arranged in a non-perpendicular manner that only intersects. For example, the first direction and the second direction can be arranged at an angle of 30°, 60°, 80°, 120°, 150° or 170°.

[0117] For example Figure 3 As shown, the first direction can be the length direction of the battery cell 2011, that is... Figure 4 The Y1 direction shown is the direction of the thickness of the battery cell 2011, and the second direction is the direction of the thickness of the battery cell 2011. Figure 3 The direction of X1 is shown. Figure 3 Taking the first heat exchange channel 10 arranged in the Y1 direction away from the origin as an example, the first heat exchange section 111 extends in a straight line in the X1 direction, and multiple first heat exchange sections 111 are arranged at intervals in the Y1 direction. The second heat exchange section 121 is arranged on the side of the multiple first heat exchange sections 111 away from the origin in the Y1 direction and extends in a straight line in the X1 direction, and is used to exchange heat with the edge of the battery assembly 200 away from the origin in the Y1 direction. The third heat exchange section 122 is arranged on the side of the multiple first heat exchange sections 111 close to the origin in the X1 direction and extends in a straight line in the Y1 direction. The third heat exchange section 122 is used to exchange heat with the edge of the battery assembly 200 close to the origin in the X1 direction. The fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 away from the origin in the X1 direction and extends in a straight line in the Y1 direction. The fourth heat exchange section 125 can be used to exchange heat with the edge of the battery assembly 200 away from the origin in the X1 direction.

[0118] In the above embodiment, by setting multiple first heat exchange sections 111 to be bent and connected sequentially in a first direction, a second heat exchange section 121 is located on one side of the multiple first heat exchange sections 111 along the first direction, a third heat exchange section 122 is located on one side of the multiple first heat exchange sections 111 along the second direction, and a fourth heat exchange section 125 is located on the other side of the multiple first heat exchange sections 111 along the second direction, the positional relationship between the second heat exchange section 121, the third heat exchange section 122, the fourth heat exchange section 125 and the first heat exchange section 111 is defined, the layout of the first heat exchange channel 10 is further defined, the structure of the first heat exchange channel 10 is simplified, and it is easy to process and manufacture.

[0119] According to some specific embodiments of this application, such as Figure 3 As shown, the third heat exchange section 122 and the fourth heat exchange section 125 are along the first direction (e.g., Figure 3 As shown in the Y1 direction, the first heat exchanger 111 and the second heat exchanger 121 are both extended along the second direction.

[0120] The third heat exchange section 122 and the fourth heat exchange section 125 can both extend in a straight line along the first direction, and the first heat exchange section 111 and the second heat exchange section 121 can both extend in a straight line along the second direction. The straight-line structure is simple, convenient to produce, and easy to arrange, thereby further reducing the production complexity and cost of the first heat exchange channel 10.

[0121] In the above embodiments, by setting the third heat exchange section 122 and the fourth heat exchange section 125 to extend along the first direction, and the first heat exchange section 111 and the second heat exchange section 121 to extend along the second direction, it is beneficial to arrange the first heat exchange channel 10 in a roundabout way, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100.

[0122] Based on some examples in this application, such as Figure 3 As shown, the third heat exchange section 122 and the fourth heat exchange section 125 are both extended along the first direction. In the first direction, the length b1 of the fourth heat exchange section 125 is less than or equal to the length a1 of the third heat exchange section 122.

[0123] When the length b1 of the fourth heat exchange section 125 is equal to the length a1 of the third heat exchange section 122, the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are connected in sequence to form a standard U-shaped flow channel; when the length b1 of the fourth heat exchange section 125 is less than the length a1 of the third heat exchange section 122, it is advantageous to avoid other flow channel sections of the first heat exchange flow channel 10 (e.g., to avoid...). Figure 3 The first inlet / outlet section 15 shown avoids other heat exchange channels or other components, which is beneficial to the layout of the first heat exchange channel 10 and the compact structure.

[0124] In the above embodiments, by setting the length of the fourth heat exchange section 125 to be equal to the length of the third heat exchange section 122, the dimensions of the two ends of the U-shaped region 120 can be made close, which is beneficial to controlling the temperature difference of the battery cells 2011 at both ends of the battery assembly 200 in the second direction and improving the temperature uniformity of the battery assembly 200. By setting the length of the fourth heat exchange section 125 to be less than the length of the third heat exchange section 122 in the first direction, it is convenient for the fourth heat exchange section 125 to be connected to the current collector, and the fourth heat exchange section 125 can also avoid other flow channel sections, other flow channel structures or other components of the first heat exchange flow channel 10.

[0125] According to some specific embodiments of this application, such as Figure 3 As shown, the fourth heat exchange section 125 extends along the first direction and extends to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121.

[0126] The fourth heat exchange section 125 extends along the first direction. One end of the fourth heat exchange section 125 is connected to the second heat exchange section 121, and the other end of the fourth heat exchange section 125 extends to a position close to the first heat exchange section 111 that is furthest from the second heat exchange section 121. That is, the other end of the fourth heat exchange section 125 extends to be flush with the first heat exchange section 111 that is furthest from the second heat exchange section 121, or the other end of the fourth heat exchange section 125 extends to be close to the first heat exchange section 111 that is furthest from the second heat exchange section 121, or the other end of the fourth heat exchange section 125 extends beyond the first heat exchange section 111 that is furthest from the second heat exchange section 121.

[0127] This increases the length of the fourth heat exchange section 125, increases the heat exchange area between the fourth heat exchange section 125 and the battery assembly 200, further improves the heat exchange effect of the heat exchange component 100, and also benefits the layout of the first heat exchange channel 10.

[0128] In the above embodiment, by setting the fourth heat exchange section 125 to extend along the first direction and to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121, the heat exchange area of ​​the fourth heat exchange section 125 can be increased, so that the first heat exchange channel 10 can exchange heat with the plurality of battery cells 2011 arranged corresponding to the first heat exchange channel 10 as much as possible, thereby improving the heat exchange comprehensiveness of the first heat exchange channel 10 and thus improving the heat exchange effect of the battery 400.

[0129] According to some embodiments of this application, such as Figure 5 As shown, the first heat exchange section 11 may include a plurality of first heat exchange parts 111, which are sequentially bent and connected in a first direction; the second heat exchange part 121 is located on one side of the plurality of first heat exchange parts 111 along a second direction, and the third heat exchange part 122 is located on one side of the plurality of first heat exchange parts 111 along a first direction, with the first and second directions arranged at an angle; the first end of the third heat exchange part 122 is connected to one end of the second heat exchange part 121 along the first direction, and the second end of the third heat exchange part 122 is connected to the one of the plurality of first heat exchange parts 111 that is closest to the third heat exchange part 122 along the first direction; the fourth heat exchange part 125 is located on the other side of the plurality of first heat exchange parts 111 along the first direction, and one end of the fourth heat exchange part 125 is connected to the end of the second heat exchange part 121 that is away from the third heat exchange part 122, and the other end of the fourth heat exchange part 125 extends along the second direction in a direction away from the second heat exchange part 121.

[0130] Multiple first heat exchange sections 111 are sequentially bent and connected in a first direction. That is, multiple first heat exchange sections 111 are arranged sequentially in the first direction, and adjacent and connected first heat exchange sections 111 are bent and connected in the first direction. The first heat exchange section 111 can extend along a straight line parallel to the second direction, or the first heat exchange section 111 can extend along a straight line arranged at an angle to the second direction, or the first heat exchange section 111 can extend along a curve and / or a broken line in the second direction.

[0131] The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are connected in sequence to the first heat exchange section 111 closest to the third heat exchange section 122. The multiple first heat exchange sections 111 are arranged at intervals along the first direction and connected in sequence. In this way, the heat exchange fluid can flow sequentially through the fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122, and then enter the first heat exchange section 11. In the first heat exchange section 11, the fluid first passes through the first heat exchange section 111 closest to the third heat exchange section 122, and finally flows to the first heat exchange section 111 furthest from the third heat exchange section 122. Alternatively, the heat exchange fluid can first flow into the first heat exchange section 11, and in the first heat exchange section 11, the fluid first flows through the first heat exchange section 111 furthest from the third heat exchange section 122, flows out from the first heat exchange section 111 closest to the third heat exchange section 122, and then flows sequentially through the second heat exchange section 121 and the fourth heat exchange section 125.

[0132] For example Figure 5 As shown, the first direction can be the length direction of the battery cell 2011, that is... Figure 5 The Y1 direction shown is the direction of the thickness of the battery cell 2011, and the second direction is the direction of the thickness of the battery cell 2011. Figure 5 In the X1 direction shown, taking the first heat exchange channel 10 arranged in the Y1 direction away from the origin as an example, the first heat exchange section 111 extends in a straight line along the X1 direction, and multiple first heat exchange sections 111 are arranged at intervals in the Y1 direction. The second heat exchange section 121 is arranged on the side of the multiple first heat exchange sections 111 close to the origin in the X1 direction and extends in a straight line in the Y1 direction, and is used to exchange heat with the edge of the battery assembly 200 close to the origin in the X1 direction. The third heat exchange section 122 is arranged on the side of the multiple first heat exchange sections 111 away from the origin in the Y1 direction and extends in a straight line in the X1 direction. The third heat exchange section 122 is used to exchange heat with the edge of the battery assembly 200 away from the origin in the Y1 direction. The fourth heat exchange section 125 is arranged on the side of the multiple first heat exchange sections 111 close to the origin in the Y1 direction and extends in a straight line in the X1 direction, and can be used to exchange heat with the edge of the battery assembly 200 close to the origin in the Y1 direction.

[0133] In the above embodiments, by setting the second heat exchange section 121 to one side of the plurality of first heat exchange sections 111 along the second direction, the third heat exchange section 122 to one side of the plurality of first heat exchange sections 111 along the first direction, and the fourth heat exchange section 125 to the other side of the plurality of first heat exchange sections 111 along the first direction, another layout of the first heat exchange channel 10 is defined. This increases the diversity of the first heat exchange channel 10, enabling it to meet the heat exchange requirements of different batteries 400, simplifying the structure of the first heat exchange channel 10, and facilitating its processing and manufacturing.

[0134] According to some specific embodiments of this application, such as Figure 5 As shown, the first heat exchange section 111, the third heat exchange section 122, and the fourth heat exchange section 125 are along the second direction (e.g., Figure 5 The second heat exchange section 121 extends along the first direction (e.g., the X1 direction shown), and extends along the first direction (e.g., the X1 direction shown). Figure 5 Extending in the Y1 direction shown.

[0135] The first heat exchange section 111, the third heat exchange section 122, and the fourth heat exchange section 125 extend in a straight line along the second direction, while the second heat exchange section 121 extends in a straight line along the first direction. The straight-line structure is simple, convenient to manufacture, and easy to arrange, thereby further reducing the manufacturing complexity and cost of the first heat exchange channel 10.

[0136] In the above embodiments, by setting the first heat exchange section 111, the third heat exchange section 122 and the fourth heat exchange section 125 to extend along the second direction, and the second heat exchange section 121 to extend along the first direction, it is beneficial to arrange the first heat exchange channel 10 in a roundabout way, thereby reducing the production difficulty of the first heat exchange channel 10 and reducing the production cost of the heat exchange component 100; at the same time, this arrangement also makes the structure of the first heat exchange channel 10 more compact and reliable.

[0137] Based on some examples in this application, such as Figure 5 As shown, the first heat exchange section 111 and the third heat exchange section 122 extend along the second direction, and the second heat exchange section 121 extends along the first direction. In the second direction, the length a2 of the third heat exchange section 122 is greater than or equal to the length c1 of the first heat exchange section 111.

[0138] In the above embodiment, by setting the length a2 of the third heat exchange section 122 to be greater than the length c1 of the first heat exchange section 111 in the second direction, the first heat exchange section 11 can be covered within the U-shaped region 120 of the second heat exchange section 12, increasing the length of the third heat exchange section 122 and increasing its heat exchange area, so that the second heat exchange section 12 can enclose a larger U-shaped region 120, thereby improving the heat exchange effect of the heat exchanger 100. By setting the length a2 of the third heat exchange section 122 to be equal to the length c1 of the first heat exchange section 111, the length dimensions of the third heat exchange section 122 extending along the second direction of the first heat exchange channel 10 and the plurality of first heat exchange sections 121 are close, which is beneficial to controlling the temperature difference of the battery assembly 200 along the first direction and improving the temperature uniformity of the battery assembly 200.

[0139] According to some embodiments of this application, such as Figure 3 As shown, the second heat exchange section 12 may further include a second bend 123 and a third bend 124. Both the second bend 123 and the third bend 124 are arc-shaped. The second bend 123 is connected between the first end of the third heat exchange section 122 and the second heat exchange section 121, and the third bend 124 is connected between the second end of the third heat exchange section 122 and the first heat exchange section 111.

[0140] The second bend 123 and the third bend 124 are used to connect the second heat exchange section 121 with the third heat exchange section 122 and the third heat exchange section 122 with the first heat exchange section 111, respectively. The second bend 123 is arc-shaped, that is, the second bend 123 extends along an arc, and the fluid flow directions at both ends of the second bend 123 have a certain angle. The third bend 124 is arc-shaped, that is, the third bend 124 extends along an arc, and the fluid flow directions at both ends of the third bend 124 have a certain angle.

[0141] The second bend 123 and the third bend 124 can change the flow direction of the heat exchange fluid, allowing the second heat exchange section 12 to extend within a predetermined area and exchange heat with the battery assembly 200. Simultaneously, the arc-shaped second bend 123 and third bend 124 can reduce the flow resistance of the fluid and decrease the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0142] In the above embodiment, by providing the second bend 123 and the third bend 124, the flow direction of the fluid in the first heat exchange channel 10 can be changed, achieving a smooth transition connection between the third heat exchange section 122 and the second heat exchange section 121, and a smooth transition connection between the third heat exchange section 122 and the first heat exchange section 111. As a result, the second bend 123 and the third bend 124 can reduce the flow resistance of the fluid in the second heat exchange section 12, reduce the pressure drop, increase the flow rate of the heat exchange fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10.

[0143] According to some embodiments of this application, such as Figure 3 As shown, the second bend 123 can be in the shape of a quarter circle.

[0144] The second bend 123 can extend along a semi-circular arc. Specifically, the first bend 112 can extend along a quarter-circular arc away from the protrusion of the first connecting section. The angle between the inlet and outlet of the second bend 123 can be 90°. The second bend 123 is similar to a 90° elbow in pipe material, which can change the flow direction, so that the fluid flow direction changes by 90° after passing through the second bend 123. For example, the flow direction of the liquid can be changed from the Y1 direction to the X1 direction, or from the X1 direction to the Y1 direction.

[0145] The second bending portion 123 connects the second heat exchange portion 121 and the third heat exchange portion 122. At this time, the second heat exchange portion 121 and the third heat exchange portion 122 are arranged perpendicularly to each other.

[0146] In the above embodiment, by setting the second bend 123 to be a quarter-circle arc, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the second bend 123; at the same time, the arc shape can also reduce the resistance of fluid flow, allowing the fluid to flow smoothly in the second bend 123, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0147] According to some embodiments of this application, such as Figure 3 As shown, the third bend 124 is in the shape of a quarter circle.

[0148] The third bend 124 can extend along a semi-circular arc. Specifically, the third bend 124 can extend along a quarter-circular arc away from the protrusion of the first connecting section. The angle between the inlet and outlet of the third bend 124 is 90°. The third bend 124 is similar to a 90° elbow in pipe material, which can change the flow direction, so that the fluid flow direction changes by 90° after passing through the third bend 124. For example, the flow direction of the liquid can be changed from the Y1 direction to the X1 direction, or from the X1 direction to the Y1 direction. The third bend 124 connects the third heat exchange section 122 and the first heat exchange section 111. At this time, the third heat exchange section 122 and the first heat exchange section 111 are arranged perpendicular to each other.

[0149] In the above embodiment, by setting the third bend 124 to be a quarter-circle arc, the flow direction of the fluid can be changed from the original flow direction to perpendicular to the original flow direction after passing through the third bend 124. At the same time, the arc-shaped third bend 124 can also reduce the resistance to fluid flow, allowing the fluid to flow smoothly within the third bend 124, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0150] According to some embodiments of this application, such as Figure 6 As shown, the second heat exchange section 12 may further include a fifth heat exchange section 127, which extends along the fourth side periphery of the first heat exchange section 11 and closes at least a portion of the opening of the U-shaped region 120 formed by the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125.

[0151] The fifth heat exchange section 127 can close part of the opening of the U-shaped region 120 or completely close the opening of the U-shaped region 120. Thus, the second heat exchange section 12 can basically cover the periphery of the battery module 200 and exchange heat with the periphery of the battery module 200. In this way, the second heat exchange section 12 can exchange heat with all or most of the periphery of the battery module 200. Therefore, the structure of the first heat exchange channel 10 can be set according to the actual arrangement of the battery module 200 or the heat exchange requirements, and the second heat exchange section 12 with the fifth heat exchange section 127 can be set to optimize the heat exchange structure of the first heat exchange channel 10 and improve the heat exchange efficiency.

[0152] In the above embodiment, by providing a fifth heat exchange section 127, the second heat exchange section 12 can exchange heat on the four sides of the battery module 200. In this way, the heat exchange on the four sides of the battery module 200 can be exchanged using only the second heat exchange section 12 of the first heat exchange channel 10. This improves the heat exchange effect on the four sides of the battery module 200 and enhances the temperature uniformity of the battery module 200.

[0153] According to some embodiments of this application, such as Figure 6 As shown, the fifth heat exchange section 127 is arranged opposite to the second heat exchange section 121. The fifth heat exchange section 127 is connected between the second end of the third heat exchange section 122 and the first heat exchange section 11, and is connected at an angle to the third heat exchange section 122 and the first heat exchange section 11.

[0154] In the above embodiment, the second heat exchange section 121 is arranged on one side of the first heat exchange section 11 in the first direction (e.g., Figure 6(As shown in the diagram, the fifth heat exchange section 127 is arranged opposite to the second heat exchange section 121 along the Y1 direction, away from the origin of the coordinate system). Figure 6 The plurality of first heat exchange sections 111 shown are located on the side of the first heat exchange section 11 near the origin of the coordinate system along the Y1 direction. The third heat exchange section 122 is arranged on one side of the first heat exchange section 11 in the second direction of the first heat exchange section 11 (e.g., Figure 6 The first heat exchange section 111 shown is located on the side of the coordinate origin along the X1 direction. The two ends of the third heat exchange section 122 in the Y1 direction are respectively connected to the second heat exchange section 121 and the fifth heat exchange section 127.

[0155] The fifth heat exchange section 127 is connected to the third heat exchange section 122 at an angle. For example, the fifth heat exchange section 127 and the third heat exchange section 122 are connected at an angle greater than 0° and less than or equal to 180°. For example, the included angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc. The fifth heat exchange section 127 is also connected to the first heat exchange section 11 at an angle. For example, the fifth heat exchange section 127 and the first heat exchange section 11 are connected at an angle greater than 0° and less than or equal to 180°. For example, the included angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0156] The fifth heat exchange section 127 and the third heat exchange section 122 can be connected by an arc segment, for example, the fifth heat exchange section 127 and the third heat exchange section 122 can be connected by a quarter circle arc.

[0157] The fifth heat exchange section 127 and the first heat exchange section 11 can be connected by an arc segment, for example, the fifth heat exchange section 127 and the first heat exchange section 11 can be connected by a semi-circular arc.

[0158] In the above embodiment, by arranging the fifth heat exchange section 127 opposite to the second heat exchange section 121 and connecting the fifth heat exchange section 127 between the third heat exchange section 122 and the first heat exchange segment 11, the structure of the first heat exchange channel 10 can be further optimized according to the heat exchange requirements of the battery assembly 200.

[0159] In other specific embodiments, reference is made to... Figure 8 As shown, the fifth heat exchange section 127 is arranged opposite to the second heat exchange section 121. One end of the fifth heat exchange section 127 is connected to the end of the fourth heat exchange section 125 that is away from the second heat exchange section 121, and the fifth heat exchange section 127 and the fourth heat exchange section 125 are connected at an angle.

[0160] The fifth heat exchange section 127 is connected to the fourth heat exchange section 125 at an angle. For example, the fifth heat exchange section 127 and the fourth heat exchange section 125 are connected and arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the fifth heat exchange section 127 and the third heat exchange section 122 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0161] Reference Figure 9 The second heat exchange section 121 and the fifth heat exchange section 127 are respectively arranged on both sides of the first heat exchange section 11 in the X1 direction, the third heat exchange section 122 and the fourth heat exchange section 125 are respectively arranged on both sides of the first heat exchange section 11 in the Y1 direction, the fifth heat exchange section 127 extends along the Y1 direction, the end of the fifth heat exchange section 127 near the origin of the coordinates in the Y1 direction is connected to the fourth heat exchange section 125, and the end of the fifth heat exchange section away from the origin of the coordinates in the Y1 direction extends toward the third heat exchange section 13.

[0162] The fifth heat exchange section 127 and the fourth heat exchange section 125 can be connected by an arc, for example, the fifth heat exchange section 127 and the fourth heat exchange section 125 can be connected by a quarter arc.

[0163] In the above embodiment, by arranging the fifth heat exchange section 127 opposite to the second heat exchange section 121 and connecting the fifth heat exchange section 127 to the fourth heat exchange section 125, the structure of the first heat exchange channel 10 can be further optimized according to the heat exchange requirements of the battery assembly 200.

[0164] In the above embodiments, by setting the fifth heat exchange section 127 to be arranged opposite to the second heat exchange section 121, and the fifth heat exchange section 127 is connected between the second end of the third heat exchange section 122 and the first heat exchange section 11, or one end of the fifth heat exchange section 127 is connected to the end of the fourth heat exchange section 125 away from the second heat exchange section 121, multiple heat exchange channels can be arranged, thereby meeting the heat exchange requirements of various batteries 400.

[0165] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange channel 10 may further include: a third heat exchange section 13, the first heat exchange section 11 being connected between the third heat exchange section 13 and the second heat exchange section 12, and the third heat exchange section 13 being connected to the first heat exchange section 11 at an angle.

[0166] In the first heat exchange channel 10, the second heat exchange section 12, the first heat exchange section 11 and the third heat exchange section 13 are connected in sequence. The heat exchange fluid can flow from the second heat exchange section 12 through the first heat exchange section 11 to the third heat exchange section 13, or it can flow from the third heat exchange section 13 through the first heat exchange section 11 to the second heat exchange section 12.

[0167] The third heat exchange section 13 is connected to the first heat exchange section 11 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the included angle between the third heat exchange section 13 and the first heat exchange section 11 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0168] In the above embodiments, by setting a third heat exchange section 13, the heat exchange area of ​​the first heat exchange channel 10 can be further increased, thereby further improving the heat exchange effect of the first heat exchange channel 10.

[0169] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange section 11 includes a plurality of first heat exchange parts 111, and the plurality of first heat exchange parts 111 are in a first direction (e.g., Figure 3 The first heat exchange section 11 is connected sequentially in the Y1 direction shown; the third heat exchange section 13 is arranged on the side of the first heat exchange section 11 away from the third heat exchange section 122, and the third heat exchange section 13 is connected to the one of the plurality of first heat exchange sections 111 that is closest to the second heat exchange section 121 in the first direction.

[0170] The third heat exchange section 13 is arranged adjacent to the fourth heat exchange section 125 and between the fourth heat exchange section 125 and the first heat exchange section 111. Thus, the third heat exchange section 13 is also arranged on the circumferential outer side of the first heat exchange section 11. In this way, the circumferential heat exchange area of ​​the first heat exchange channel 10 can be increased, and the heat exchange efficiency of the first heat exchange channel 10 at the circumferential position can be improved.

[0171] The third heat exchange section 13 and the fourth heat exchange section 125 can be arranged inside and outside on the same side of the first heat exchange section 11, which can further increase the heat exchange area at this location and improve the heat exchange efficiency. In addition, since the third heat exchange section 13 and the fourth heat exchange section 125 are located at opposite ends of the first flow channel in the fluid flow direction, the third heat exchange section 13 and the fourth heat exchange section 125 can exchange heat with the same area of ​​the battery assembly 200, thereby improving the temperature uniformity of this area.

[0172] The third heat exchange section 13 is connected to the first heat exchange section 111 that is closest to the second heat exchange section 121 along the first direction. The first heat exchange sections 111 are connected sequentially along the first direction. The third heat exchange section 122 is connected to the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the first direction. In this way, when exchanging heat with the battery assembly 200, the temperatures of the heat exchange fluid in the first heat exchange section 111 closest to the second heat exchange section 121 and the heat exchange fluid in the third heat exchange section 13, as well as the temperatures of the heat exchange fluid in the second heat exchange section 121 and the fourth heat exchange section 125, are respectively the highest and lowest temperatures in the first heat exchange channel 10, while the temperatures of the remaining parts are in the middle.

[0173] Due to the heat dissipation effect of the battery 400, the edge temperature of the battery 400 is lower than the middle temperature. Thus, the second heat exchange section 121 and the first heat exchange section 111, which is closest to the second heat exchange section 121, exchange heat in the same area. The third heat exchange section 13 and the fourth heat exchange section 125 exchange heat in the same area. This can further improve the temperature uniformity within the battery module 200, balance the temperature difference of the battery module 200, and thus improve the temperature uniformity of the battery module 200.

[0174] In the above embodiment, by adding a third heat exchange section 13 and connecting the third heat exchange section 13 to the one of the plurality of first heat exchange sections 111 that is closest to the second heat exchange section 121 along the first direction, the heat exchange area can be increased, the temperature difference of the battery module 200 can be balanced, and the temperature uniformity of the battery module 200 can be improved.

[0175] According to some embodiments of this application, such as Figures 3-7 As shown, the third heat exchange section 13 extends along the first direction toward a direction away from the second heat exchange section 121, and the first heat exchange sections 111 all extend along the second direction. The first direction and the second direction are arranged at an angle.

[0176] One end of the third heat exchange section 122 is connected to the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the first direction. The other end of the third heat exchange section 122 extends toward the first heat exchange section 111 that is furthest from the second heat exchange section 121. At the same time, the fourth heat exchange section 125 also extends toward the first heat exchange section 111 that is furthest from the second heat exchange section 121.

[0177] The third heat exchange section 13 is arranged on the side of the first heat exchange section 11 away from the third heat exchange part 122. At this time, the third heat exchange section 13 and the fourth heat exchange part 125 are arranged on the same outer side of the first heat exchange part 111 in the circumferential direction. The third heat exchange section 13 and the fourth heat exchange part 125 are respectively located at both ends of the first flow channel in the fluid flow direction. When the third heat exchange section 13 and the fourth heat exchange part 125 exchange heat with the same area of ​​the battery assembly 200, the temperature difference at the edge of the battery assembly 200 can be balanced, and the temperature uniformity at the edge of the battery assembly 200 can be improved.

[0178] In the above embodiment, by setting the third heat exchange section 13 to extend in the first direction away from the second heat exchange part 121, the heat exchange area of ​​the first heat exchange channel 10 can be increased, and the heat exchange effect of the first heat exchange channel 10 on the battery cell 2011 can be improved. At the same time, when the third heat exchange section 13 and the fourth heat exchange part 125 exchange heat with the battery assembly 200 together, the temperature difference at the edge of the battery assembly 200 can be balanced, and the temperature uniformity at the edge of the battery assembly 200 can be improved.

[0179] According to some embodiments of this application, such as Figures 3-7 As shown, the third heat exchange section 13 extends along the first direction to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121.

[0180] In the above embodiment, by setting the third heat exchange section 13 to extend along the first direction to a position close to the one of the plurality of first heat exchange sections 111 that is furthest from the second heat exchange section 121, the length of the third heat exchange section 122 can be increased, the heat exchange area of ​​the third heat exchange section 122 can be increased, and the heat exchange effect of the first heat exchange channel 10 can be improved.

[0181] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange channel 10 may further include a fourth bend 14, which is arc-shaped and bends between the third heat exchange section 13 and the first heat exchange section 111.

[0182] The fourth bend 14 is arc-shaped, meaning it extends along an arc, and the fluid flow directions at both ends of the fourth bend 14 have a certain angle. Therefore, the fourth bend 14 can change the fluid flow direction, thereby allowing the third heat exchange section 13 to extend along a predetermined direction. Simultaneously, the arc shape reduces fluid flow resistance and pressure drop, thereby increasing the fluid flow rate and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0183] In the above embodiment, by providing the fourth bend 14, the flow direction of the fluid between the third heat exchange section 13 and the first heat exchange section 111 can be changed. At the same time, the arc-shaped fourth bend 14 can reduce the flow resistance of the fluid, reduce the pressure drop, increase the flow rate of the fluid, and further increase the heat exchange efficiency of the first heat exchange channel 10.

[0184] According to some embodiments of this application, such as Figures 3-7 As shown, the fourth bend 14 is in the shape of a quarter circle.

[0185] The fourth bend 14 can extend along a semi-circular arc. Specifically, the fourth bend 14 can extend along a quarter-circular arc that protrudes towards the connection position of the second heat exchanger 121 and the fourth heat exchanger 125. The angle between the inlet and outlet of the fourth bend 14 is 90°. The fourth bend 14 is similar to a 90° elbow in pipe material, which can change the flow direction, so that the fluid flow direction changes by 90° after passing through the fourth bend 14. For example, the flow direction of the liquid can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction.

[0186] The fourth bend 14 connects the third heat exchange section 13 and the first heat exchange section 111. The third heat exchange section 13 and the first heat exchange section 111 can be arranged perpendicular to each other. The first heat exchange section 111 extends along the second direction, and the third heat exchange section 13 extends along the first direction. The first direction is perpendicular to the second direction.

[0187] In the above embodiment, by setting the fourth bend 14 to be a quarter-circle arc, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the fourth bend 14; at the same time, the arc shape can also reduce the resistance to fluid flow, allowing the fluid to flow smoothly within the fourth bend 14, effectively preventing the heat exchange efficiency from being reduced due to excessively slow fluid flow.

[0188] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange channel 10 may further include: a first inlet / outlet section 15, one end of the first inlet / outlet section 15 being connected at an angle to the third heat exchange section 13, and the other end of the first inlet / outlet section 15 forming the first inlet / outlet of the first heat exchange channel 10.

[0189] The first inlet / outlet is used for the inlet or outlet of the heat exchange fluid. When the first inlet / outlet is used for the inlet of the heat exchange fluid, the first inlet / outlet section 15 is used to transport the heat exchange fluid to the third heat exchange section 13. When the first inlet / outlet is used for the outlet of the heat exchange fluid, the first inlet / outlet section 15 is used to discharge the heat exchange fluid after heat exchange through the first inlet / outlet into the first heat exchange channel 10.

[0190] The first inlet / outlet section 15 and the third heat exchange section 13 are connected at an angle. For example, the first inlet / outlet section 15 and the third heat exchange section 13 are connected and arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the first inlet / outlet section 15 and the third heat exchange section 13 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0191] In the above embodiment, by setting the first inlet / outlet section 15, the external pipeline can be conveniently connected, so that the heat exchange medium can enter or exit the first heat exchange channel 10. At the same time, it can also guide the heat exchange fluid entering or exiting the first heat exchange channel 10, so that the heat exchange fluid can enter or exit quickly, thereby improving the heat exchange rate.

[0192] According to some embodiments of this application, such as Figures 3-7 As shown, the first inlet / outlet section 15 extends in the second direction away from the first heat exchange section 11, and the third heat exchange section 13 extends in the first direction.

[0193] There is a certain angle between the first inlet / outlet section 15 and the third heat exchange section 13. As a result, there will be a certain space on the side of the third heat exchange section 13 facing the first inlet / outlet section 15, which can facilitate the layout of other components within the battery 400.

[0194] In the above embodiment, by setting the first inlet / outlet section 15 to extend away from the first heat exchange section 11 along the second direction, the pipe layout of the first heat exchange channel 10 can be made more reasonable and it is easier to connect with external pipes; at the same time, it can also make the first inlet / outlet away from the battery assembly 200, which helps to reduce the occurrence of damage to the battery assembly 200 due to water leakage from the first inlet / outlet.

[0195] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange channel 10 may further include a fifth bend 16, which is arc-shaped and bends between the third heat exchange section 13 and the first inlet / outlet section 15.

[0196] The fifth bend 16 is arc-shaped, meaning that the fifth bend 16 extends along an arc, and the fluid flow directions at both ends of the fifth bend 16 have a certain angle. This allows the third heat exchange section 13 and the first inlet / outlet section 15 to be connected, enabling the heat exchange fluid to flow smoothly from the third heat exchange section 13 to the first inlet / outlet section 15 or from the first inlet / outlet section 15 to the third heat exchange section 13, thus achieving liquid inlet or outlet of the first inlet / outlet section 15. At the same time, the arc shape can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0197] In the above embodiment, by providing a fifth bend, the heat exchange fluid can flow smoothly from the third heat exchange section 13 to the first inlet / outlet section 15 or from the first inlet / outlet section 15 to the third heat exchange section 13, realizing liquid inlet or outlet of the first inlet / outlet section 15; at the same time, the arc shape of the fifth bend 16 can reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0198] According to some embodiments of this application, such as Figures 3-7 As shown, the fifth bend 16 is arc-shaped, and the central angle corresponding to the fifth bend 16 is greater than or equal to 90° and less than 180°.

[0199] The central angle corresponding to the fifth bend 16 can be 90°, 120°, 150° or 170°.

[0200] like Figure 3As shown, the heat exchanger 100 includes two first heat exchange channels 10. The fifth bend 16 of the first heat exchange channel 10 located on the side away from the origin in the Y1 direction is in the shape of a quarter-circle arc. The third heat exchange section 13 is arranged perpendicularly to the first inlet / outlet section 15. Meanwhile, the first inlet / outlet section 15 of the lower first heat exchange channel 10 includes a first extension section and a second extension section. The first extension section connects the second extension section and the third heat exchange section 13. The first extension section extends along a straight line inclined relative to the second direction, and the second extension section extends along a straight line parallel to the second direction. The first extension section and the third heat exchange section 13 are connected by the fifth bend 16. The central angle corresponding to the arc of the fifth bend 16 is greater than 90° and less than 135°.

[0201] In the above embodiment, by setting the fifth bend 16 to be arc-shaped, the resistance to fluid flow can be further reduced, allowing the fluid to flow smoothly within the fifth bend 16, effectively preventing the heat exchange efficiency from decreasing due to slow fluid flow. At the same time, the central angle corresponding to the fifth bend 16 is greater than or equal to 90° and less than 180°, which can also form a certain space on the side of the third heat exchange section 13 facing the first inlet / outlet section 15, thereby facilitating the arrangement of other components within the battery 400 and improving the layout rationality of the battery 400.

[0202] According to some embodiments of this application, such as Figures 3-7 As shown, the second heat exchange section 12 further includes a sixth bend 126, which is connected between the fourth heat exchange section 125 and the second heat exchange section 121.

[0203] The sixth bend 126 is arc-shaped, meaning it extends along an arc and the fluid flow directions at both ends of the sixth bend 126 have a certain angle. This allows the sixth bend 126 to change the flow direction of the heat exchange fluid, thereby enabling the second heat exchange section 121 and the fourth heat exchange section 125 to extend along a predetermined direction. Simultaneously, the arc-shaped sixth bend 126 reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0204] In the above embodiment, by providing the sixth bend 126, the flow direction of the fluid in the first heat exchange channel 10 can be changed, realizing the tortuous arrangement of the first heat exchange channel 10. This increases the heat exchange area of ​​the first heat exchange channel 10 and improves its heat exchange efficiency. At the same time, the sixth bend 126 is arc-shaped, which can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0205] According to some embodiments of this application, such as Figures 3-7 As shown, the sixth bend 126 is in the shape of a quarter circle. The sixth bend 126 can extend along a semi-circular arc. Specifically, the sixth bend 126 can extend along a quarter-circular arc away from the protrusion of the first heat exchange section 11. The angle between the inlet and outlet of the sixth bend 126 is 90°. The sixth bend 126 is similar to a 90° elbow in pipe material, which can change the flow direction, so that the fluid flow direction changes by 90° after passing through the sixth bend 126. For example, the flow direction of the liquid can be changed from the X1 direction to the Y1 direction, or from the Y1 direction to the X1 direction.

[0206] The sixth bend 126 connects the second heat exchange section 121 and the fourth heat exchange section 125. At this time, the second heat exchange section 121 and the fourth heat exchange section 125 are arranged vertically.

[0207] In the above embodiment, by setting the sixth bend 126 to be a quarter-circle arc, the flow direction of the fluid can be changed from the original flow direction to a direction perpendicular to the original flow direction after passing through the sixth bend 126. At the same time, the arc shape can further reduce the resistance to fluid flow, allowing the fluid to flow smoothly within the sixth bend 126, effectively preventing the heat exchange efficiency from being reduced due to slow fluid flow.

[0208] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange channel 10 may further include a second inlet / outlet section 17, one end of which is connected at an angle to the fourth heat exchange section 125, and the other end of which forms the second inlet / outlet of the first heat exchange channel 10.

[0209] The second inlet / outlet is used for the inlet or outlet of the heat exchange fluid. When the second inlet / outlet is used for the inlet of the heat exchange fluid, the second inlet / outlet section 17 is used to transport the heat exchange fluid to the third heat exchange section 13; when the second inlet / outlet is used for the outlet of the heat exchange fluid, the second inlet / outlet section 17 is used to discharge the heat exchanged fluid through the second inlet / outlet into the first heat exchange channel 10.

[0210] The second inlet / outlet section 17 is connected to the fourth heat exchange section 125 at an angle. For example, the second inlet / outlet section 17 and the fourth heat exchange section 125 are connected at an angle greater than 0° and less than or equal to 180°. For example, the angle between the second inlet / outlet section 17 and the fourth heat exchange section 125 is 30°, 45°, 60°, 90°, 120°, 135° or 150°, etc.

[0211] In the above embodiment, by setting the second inlet / outlet section 17, it is beneficial to the external pipeline, so that the heat exchange medium can enter or exit the first heat exchange channel 10 to complete the heat exchange of the battery cell 2011. At the same time, it can also guide the heat exchange fluid entering or exiting the first heat exchange channel 10, so that the heat exchange fluid can enter or exit quickly, thereby improving the heat exchange rate.

[0212] According to some embodiments of this application, such as Figures 3-7 As shown, the second inlet / outlet section 17 extends along the second direction away from the first heat exchange section 11, and the fourth heat exchange section 125 extends along the first direction (e.g., ...). Figure 4 The Y1 direction shown is extended.

[0213] The second inlet / outlet section 17 and the fourth heat exchange section 125 form a certain angle, thereby creating a certain space on the side of the fourth heat exchange section 125 facing the second inlet / outlet section 17. This facilitates the layout of other components (such as high-voltage boxes) within the battery 400.

[0214] In the above embodiment, by setting the second inlet / outlet section 17 to extend away from the first heat exchange section 11 along the second direction, the pipe layout of the first heat exchange channel 10 can be made more reasonable and it is easier to connect to external pipes; at the same time, the second inlet / outlet can be moved away from the battery assembly 200, which helps to reduce the occurrence of damage to the battery assembly 200 due to water leakage at the second inlet / outlet.

[0215] According to some embodiments of this application, such as Figures 3-7 As shown, the first heat exchange channel 10 further includes a seventh bend 18, which is arc-shaped and bends between the fourth heat exchange section 125 and the second inlet / outlet section 17.

[0216] The seventh bend 18 is arc-shaped, meaning it has a certain included angle. Thus, the seventh bend 18 connects the fourth heat exchange section 125 and the second inlet / outlet section 17, enabling communication between them. This allows the heat exchange fluid to flow smoothly from the fourth heat exchange section 125 to the second inlet / outlet section 17 or vice versa, facilitating liquid inlet or outlet at the second inlet / outlet section 17. Simultaneously, the arc shape reduces fluid flow resistance and pressure drop, thereby increasing the flow rate of the heat exchange fluid and further enhancing the heat exchange efficiency of the first heat exchange channel 10.

[0217] In the above embodiment, by providing the seventh bend 18, the heat exchange fluid can smoothly flow from the fourth heat exchange section 125 to the second inlet / outlet section 17 or from the second inlet / outlet section 17 to the fourth heat exchange section 125, realizing liquid inlet or outlet of the second inlet / outlet section 17; at the same time, the arc shape of the seventh bend 18 can also reduce the flow resistance of the fluid and reduce the pressure drop, thereby increasing the flow rate of the heat exchange fluid and further increasing the heat exchange efficiency of the first heat exchange channel 10.

[0218] According to some embodiments of this application, such as Figures 3-7 As shown, the seventh bend 18 is arc-shaped, and the central angle corresponding to the seventh bend 18 is greater than or equal to 90° and less than 180°.

[0219] The central angle corresponding to the seventh bend 18 can be 90°, 120°, 150° or 170°.

[0220] like Figure 3 As shown, the heat exchanger 100 includes two first heat exchange channels 10. The seventh bend 18 of the first heat exchange channel 10 located on the side away from the origin in the Y1 direction is in the shape of a quarter-circle arc. The fourth heat exchange section 125 is arranged perpendicularly to the second inlet / outlet section 17. Meanwhile, the second inlet / outlet section 17 of the lower first heat exchange channel 10 includes a third extension section and a fourth extension section. The third extension section connects the fourth extension section and the fourth heat exchange section 125. The third extension section extends along a straight line inclined relative to the second direction, and the fourth extension section extends along a straight line parallel to the second direction. The third extension section and the fourth heat exchange section 125 are connected by the seventh bend 18. The central angle corresponding to the arc of the seventh bend 18 is greater than 90° and less than 135°.

[0221] In the above embodiment, by setting the seventh bend 18 to be arc-shaped, the resistance to fluid flow can be further reduced, allowing the fluid to flow smoothly within the seventh bend 18, effectively preventing the heat exchange efficiency from decreasing due to slow fluid flow. At the same time, the central angle corresponding to the seventh bend 18 is greater than or equal to 90° and less than 180°, which can also form a clearance space on the side of the fourth heat exchange section 125 facing the second inlet / outlet section 17, thereby facilitating the layout of other components within the battery 400 and improving the rationality of the battery 400 layout.

[0222] According to some embodiments of this application, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction.

[0223] The heat exchange fluid first flows through the second heat exchange section 12 and then flows into the first heat exchange section 11. The second heat exchange section 12 is arranged around the first heat exchange section 11. When the first heat exchange channel 10 exchanges heat with the battery module 200, the peripheral temperature of the battery module 200 dissipates heat quickly, especially under low temperature heating conditions. The high temperature heat exchange fluid starts to exchange heat from the second heat exchange section 12, which can make the first heat exchange channel 10 preferentially exchange heat on the outer periphery of the battery module 200. This is beneficial to improve the temperature difference between the inside and outside of the battery module 200 and improve the service life of the battery 400 to a certain extent.

[0224] In the above embodiment, by setting the first heat exchange section 11 to be connected downstream of the second heat exchange section 12 along the fluid flow direction, the first heat exchange channel 10 can preferentially exchange heat on the outer circumferential side of the battery 400, which is beneficial to improve the temperature difference of the battery 400 in different environments and improve the service life of the battery 400 to a certain extent.

[0225] According to some embodiments of this application, the heat exchanger 100 is configured such that when heating the battery assembly 200 of the battery 400, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction; and when cooling the battery assembly 200 of the battery 400, the first heat exchange section 11 is connected upstream of the second heat exchange section 12 along the fluid flow direction.

[0226] Specifically, when heating the battery assembly 200 of the battery 400, the temperature of the heat exchange fluid flowing inside the heat exchanger 100 is higher than the operating temperature of the battery 400. The heat exchanger 100 heats the battery assembly 200. The high-temperature heat exchange fluid first flows into the second heat exchange section 12 and then flows to the first heat exchange section 11. The temperature of the heat exchange fluid flowing inside the second heat exchange section 12 is higher than the temperature of the heat exchange fluid inside the first heat exchange section 11.

[0227] Since the high-temperature fluid first enters the second heat exchange section 12 located outside the first heat exchange channel 10, the second heat exchange section 12 can first heat the battery cells 2011 on the periphery of the battery assembly 200, and then the heat exchange fluid enters the first heat exchange section 11 to cool the battery cells 2011 in the middle of the battery assembly 200. Because the battery cells 2011 surrounding the battery 400 dissipate more heat to the external environment, their temperatures drop more significantly. The heat exchange fluid first heats the battery cells 2011 surrounding the battery 400. The higher-temperature heat exchange fluid can raise the temperature of the battery cells 2011 surrounding the battery 400 while compensating for the heat lost by the battery cells 2011 due to heat dissipation to the external environment, thus meeting their heating needs. The battery cells 2011 in the middle of the battery module 200 have a smaller contact area with the external environment and less heat loss. The lower-temperature heat exchange fluid flowing in the first heat exchange section 11 can work well with the heat generated by the battery cells 2011 themselves to meet their heating needs. As a result, the heating effect obtained by the battery cells 2011 surrounding the battery module 200 and the battery cells 2011 in the middle of the battery module 200 is basically the same. Consequently, the temperatures of the battery cells 2011 surrounding the battery module 200 and the battery cells 2011 in the middle of the battery module 200 are more consistent after heating, making the temperature distribution inside the battery 400 more uniform.

[0228] When cooling the battery assembly 200 of the battery 400, the temperature of the heat exchange fluid flowing in the heat exchanger 100 is lower than the operating temperature of the battery 400. The heat exchanger 100 is used to cool the battery 400. The heat exchange fluid flows from the first heat exchange section 11 to the second heat exchange section 12. The temperature of the heat exchange fluid flowing in the first heat exchange section 11 is lower than the temperature of the heat exchange fluid inside the second heat exchange section 12.

[0229] When the battery 400 is cooled down, the heat exchange fluid flows from the first heat exchange section 11 to the second heat exchange section 12. That is, the heat exchange fluid flows from the middle part of the battery assembly 200 to the edge of the battery assembly 200 and exchanges heat. Since the heat dissipation of the battery cells 2011 at the periphery of the battery 400 is better than that of the internal battery cells 2011, the lower-temperature heat exchange fluid in the first heat exchange section 11 can better meet the heat dissipation needs of the battery cells 2011 in the middle of the battery 400. At the same time, since the battery cells 2011 at the periphery of the battery assembly 200 can directly face the external environment for natural heat dissipation, even if the temperature of the heat exchange fluid in the second heat exchange section 12 is slightly higher, it can still meet the heat dissipation needs of the peripheral battery cells 2011. As a result, the cooling effect of the battery cells 2011 at the periphery of the battery 400 and the battery cells 2011 in the middle of the battery 400 is roughly the same. This makes the temperatures of the battery cells 2011 at the periphery of the battery 400 and the battery cells 2011 in the middle of the battery 400 more consistent after cooling, reducing the temperature difference between the inside and outside of the battery assembly 200 and making the temperature distribution inside the battery 400 more uniform.

[0230] In the above embodiment, by configuring the heat exchanger 100 such that when heating the battery assembly 200 of the battery 400, the first heat exchange section 11 is connected downstream of the second heat exchange section 12 along the fluid flow direction; and when cooling the battery assembly 200 of the battery 400, the first heat exchange section 11 is connected upstream of the second heat exchange section 12 along the fluid flow direction, the heat exchange effect on the battery 400 can be further improved, and the temperature uniformity of the battery assembly 200 can be enhanced.

[0231] According to some embodiments of this application, such as Figures 3-9 As shown, the heat exchanger 100 has one or more heat exchange channels. When there are multiple heat exchange channels, the multiple heat exchange channels are arranged at intervals along the first direction or arranged around each other. At least one heat exchange channel is formed as a first heat exchange channel 10, and the multiple heat exchange channels are arranged in parallel.

[0232] The number of heat exchange channels in the heat exchanger 100 can be one, two, three, four or more. When there are multiple heat exchange channels, one of the multiple heat exchange channels can be formed as the first heat exchange channel 10, or two, three, four or more heat exchange channels can be formed as the first heat exchange channel 10, or multiple heat exchange channels can all be formed as the first heat exchange channel 10.

[0233] In some specific embodiments, multiple heat exchange channels are arranged at intervals along a first direction, for example... Figure 3As shown, the heat exchanger 100 may include two heat exchange channels, the two first heat exchange channels 10 being arranged at intervals along a first direction. Further, both heat exchange channels may be formed as first heat exchange channels 10. Alternatively, the heat exchanger 100 may include three heat exchange channels, the three heat exchange channels being arranged sequentially along a first direction. Further, two of the three heat exchange channels are first heat exchange channels 10, and one is a second heat exchange channel 30, the second heat exchange channel 30 being arranged between the two first heat exchange channels 10.

[0234] In other embodiments, multiple heat exchange channels are arranged around each other. For example Figure 8 As shown, the heat exchanger 100 has two heat exchange channels arranged in parallel, which are arranged around each other. Furthermore, both heat exchange channels can be formed as the first heat exchange channel 10. For example... Figure 10 As shown, the heat exchanger 100 has three heat exchange channels arranged in parallel, the three heat exchange channels are arranged around each other, and each of the three heat exchange channels can be formed as the first heat exchange channel.

[0235] Multiple heat exchange channels are arranged in parallel, meaning that the inlets of multiple heat exchange channels are connected to the same liquid supply pipe, and the outlets of multiple heat exchange channels are connected to the same liquid outlet pipe.

[0236] In the above embodiments, by setting the heat exchanger 100 to have one or more heat exchange channels, and the multiple heat exchange channels are arranged at intervals or around each other along the first direction, the diversity of heat exchange channels can be increased, thereby improving the adaptability of the heat exchanger 100 and enabling it to meet the needs of different batteries 400, thereby improving the market competitiveness of the battery 400; at the same time, the parallel arrangement of multiple heat exchange channels can enable multiple heat exchange channels to exchange heat simultaneously, thereby reducing the heat exchange time of the heat exchanger 100 and improving the heat exchange efficiency.

[0237] According to some embodiments of this application, such as Figure 3 As shown, multiple heat exchange channels are arranged at intervals along the first direction, and the two heat exchange channels located at both ends of the first direction are both first heat exchange channels 10; and the two first heat exchange channels 10 are arranged symmetrically about the center line of the heat exchanger 100 along the second direction, with the second direction and the first direction forming an angle.

[0238] Arranging the second heat exchange section 12 of the first heat exchange channel 10 around the periphery of the battery module 200 can improve the uniformity of the temperature inside and outside the battery module 200. Therefore, by forming both heat exchange channels at both ends of the first direction as the first heat exchange channel 10, the temperature uniformity of the battery cells 2011 at both ends of the battery module 200 in the first direction can be better, thus achieving overall temperature uniformity of the battery module 200.

[0239] The fluid flow direction and the inlet and outlet at both ends of the two first heat exchange channels 10 are symmetrically arranged, so that the two first heat exchange channels 10 can simultaneously exchange heat at both ends of the battery module 200 in the first direction, resulting in better temperature uniformity.

[0240] The phrase "the second direction is set at an angle to the first direction" is intended to illustrate that the first and second directions can be arranged perpendicularly or they can be arranged in a non-perpendicular manner that only intersects each other. For example, the first and second directions can be arranged at an angle of 30°, 60° or 80°.

[0241] In the above embodiment, by setting two symmetrically arranged first heat exchange channels 10, liquid can be fed into both sides simultaneously, the liquid flow rate can be increased, the length of a single heat exchange channel can be shortened, the pressure drop in a single heat exchange channel can be reduced, and thus the heat exchange efficiency can be improved.

[0242] According to some embodiments of this application, such as Figure 3 As shown, multiple heat exchange channels are arranged symmetrically about the centerline of the heat exchanger 100 along the second direction.

[0243] The flow direction of multiple heat exchange channels and the inlet and outlet at both ends are also symmetrically arranged, which can divide the heat exchanger 100 into two symmetrically distributed parts. In this way, during the heat exchange process, the fluid distribution of the two symmetrical parts of the heat exchanger 100 is consistent, thereby improving the temperature consistency of the heat exchange areas corresponding to the two parts of the battery module 200 and the heat exchanger 100, and further improving the temperature uniformity of the battery module 200.

[0244] In the above embodiment, by setting multiple heat exchange channels symmetrically arranged about the center line of the heat exchanger 100 along the second direction, the multiple heat exchange channels can exchange heat with the battery module 200 simultaneously, thereby improving the heat exchange efficiency. At the same time, it can also improve the temperature consistency of the two heat exchange areas of the symmetrically arranged battery module 200 and heat exchanger 100, thereby further improving the temperature uniformity of the battery module 200.

[0245] In some specific embodiments of this application, multiple heat exchange channels are arranged asymmetrically about the centerline of the heat exchanger 100 along the second direction. In this way, the multiple heat exchange channels can be designed according to the actual situation of the battery module 200, so that the heat exchanger 100 can meet the heat exchange requirements of the battery module 200 and further ensure the heat exchange effect of the battery module 200.

[0246] According to some embodiments of this application, such as Figure 8 As shown, the plurality of heat exchange channels also includes at least one second heat exchange channel 30, which is disposed between the two first heat exchange channels 10, and the structure of any second heat exchange channel 30 is the same as or different from the structure of the first heat exchange channel 10.

[0247] The second heat exchange channel 30 is located between the two first heat exchange channels 10 and is mainly used for heat exchange with the middle position of the battery assembly 200. The temperature of the battery cell 201 located in the middle position is relatively uniform. Therefore, the structure of any second heat exchange channel 30 can be the same as or different from the structure of the first heat exchange channel 10. For example, the structure of the second heat exchange channel 30 can be a simple U-shaped structure. Furthermore, the structure of the second heat exchange channel 30 can be designed according to the actual heat exchange situation of the battery 400.

[0248] The number of second heat exchange channels 30 can be one or more. For example, the number of second heat exchange channels 30 can be one, two, three or more. The number of second heat exchange channels 30 can be selected according to the arrangement of the battery module 200.

[0249] In the above embodiments, by providing at least one second heat exchange channel 30, the diversity of heat exchange channel arrangement can be increased, enabling the heat exchange component 100 to better exchange heat with the battery assembly 200 and improve the heat exchange effect of the heat exchange component 100.

[0250] According to some embodiments of this application, such as Figure 7 As shown, the second heat exchange channel 30 includes a plurality of fourth heat exchange sections 31, which are connected sequentially along the fluid flow direction, extend along the second direction, and are arranged at intervals in the first direction.

[0251] Multiple fourth heat exchange sections 31 connected in sequence can form a U-shaped or S-shaped heat exchange channel.

[0252] The number of fourth heat exchange sections 31 can be two, three or more, and the number of fourth heat exchange sections 31 can be designed according to the size of the battery module 200.

[0253] In the above embodiments, by setting the second heat exchange channel 30 to include a plurality of sequentially connected fourth heat exchange sections 31, the structural complexity of the second heat exchange channel 30 can be reduced, thereby reducing the production cost of the second heat exchange channel 30 and thus reducing the production cost of the heat exchange component 100.

[0254] According to some embodiments of this application, such as Figure 8 As shown, the heat exchanger 100 has multiple heat exchange channels, including a first heat exchange channel 10 and at least one third heat exchange channel 40. The third heat exchange channel 40 is bent within the U-shaped region 120 of the first heat exchange channel 10, and the first heat exchange channel 10 and the third heat exchange channel 40 are bent in the same plane. The bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 may be the same or different.

[0255] The bending structures of the first heat exchange channel 10 and the third heat exchange channel 40 may be the same or different. The number of third heat exchange channels 40 may be one or more; for example, the number of third heat exchange channels 40 may be one, two, three or more.

[0256] For example Figure 8 As shown, the multiple heat exchange channels include a first heat exchange channel 10 and a third heat exchange channel 40. The third heat exchange channel 40 has the same structure as the first heat exchange channel 10, and the third heat exchange channel 40 is bent within the U-shaped region 120 of the first heat exchange channel 10.

[0257] Both the first heat exchange channel 10 and the third heat exchange channel 40 include a first heat exchange section 111, a second heat exchange section 121, a third heat exchange section 122, and a fourth heat exchange section 125. The multiple first heat exchange sections 111, 122, and 125 of the first and third heat exchange channels 10 and 40 extend along the X1 direction, while the second heat exchange section 121 extends along the Y1 direction. The fourth heat exchange section 125, 121, and 122 are sequentially bent and connected to form a U-shaped structure with the opening facing the side away from the origin in the X1 direction. Multiple first heat exchange sections 111 are arranged within the U-shaped region 120, spaced apart along the Y1 direction, and sequentially bent and connected.

[0258] The third heat exchange section 122 of the first heat exchange channel 10 is arranged on the side of the plurality of first heat exchange sections 111 away from the origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the plurality of first heat exchange sections 111 close to the origin in the Y1 direction. The third heat exchange channel 40 is connected to the first heat exchange section 111 at the position furthest from the origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is arranged on the side of the plurality of first heat exchange sections 111 close to the origin in the Y1 direction, and the fourth heat exchange section 125 is arranged on the side of the plurality of first heat exchange sections 111 away from the origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40 is connected to the first heat exchange section 111 at the position closest to the origin in the Y1 direction. The third heat exchange channel 40 is arranged between the fourth heat exchange section 125 and the plurality of first heat exchange sections 111 of the first heat exchange channel 10.

[0259] The first heat exchange channel 10 and the third heat exchange channel 40 also include a first inlet / outlet section 15 and a second inlet / outlet section 17. The first inlet / outlet section 15 of the first heat exchange channel 10 is connected to the fourth heat exchange section 125, and the second inlet / outlet section 17 is connected to the first heat exchange section 111, which is closest to the origin in the Y1 direction. The first inlet / outlet section 15 of the third heat exchange channel 40 is connected to the first heat exchange section 111, which is farthest from the origin in the Y1 direction, and the second inlet / outlet section 17 is connected to the fourth heat exchange section 125.

[0260] In the above embodiments, by setting multiple heat exchange channels, the diversity of heat exchange channels can be increased, and the arrangement of heat exchange channels can be designed according to the cooling requirements of the battery 400, thereby further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 400.

[0261] According to some embodiments of this application, such as Figure 9 As shown, the third heat exchange channel 40 includes a U-shaped region 120 with the same structure as the first heat exchange channel 10, and at least a portion of the first heat exchange section 11 of the first heat exchange channel 9 is disposed within the U-shaped region 120 of the third heat exchange channel 40.

[0262] The first heat exchange channel 10 may be partially located within the U-shaped region 120 of the third heat exchange channel 40, or it may be entirely located within the U-shaped region 120 of the third heat exchange channel 40.

[0263] For example Figure 9 As shown, the multiple heat exchange channels include a first heat exchange channel 10 and two third heat exchange channels 40, and the two third heat exchange channels 40 have the same structure as the first heat exchange channel 10.

[0264] The first heat exchange channel 10 and the two third heat exchange channels 40 each include a first heat exchange section 111, a second heat exchange section 121, a third heat exchange section 122, and a fourth heat exchange section 125. The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 of any one of the first heat exchange channel 10 and the two third heat exchange channels 40 are sequentially bent and connected to form a U-shaped structure with the opening facing away from the origin in the X1 direction. The first heat exchange section 111 includes multiple sections, which are arranged within the U-shaped region 120. These multiple sections extend linearly along the X1 direction and are spaced apart and sequentially bent and connected along the Y1 direction. The second heat exchange section 121 extends along the Y1 direction, and the third heat exchange section 122 and the fourth heat exchange section 125 both extend along the X1 direction.

[0265] The third heat exchange section 122 of the first heat exchange channel 10 is located on the side of the plurality of first heat exchange sections 111 that is far from the origin in the Y1 direction, and is connected to the first heat exchange section 111 that is farthest from the origin in the Y1 direction. The fourth heat exchange section 125 is located on the side of the plurality of first heat exchange sections 111 that is close to the origin in the Y1 direction.

[0266] The third heat exchange section 122 of the third heat exchange channel 40a is located on the side of the plurality of first heat exchange sections 111 that is furthest from the origin in the Y1 direction, and is connected to the first heat exchange section 111 that is furthest from the origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40a and the first heat exchange section 111 that is furthest from the origin in the Y1 direction of the third heat exchange channel 40a are located between the third heat exchange section 122 of the first heat exchange channel 10 and the plurality of first heat exchange sections 111 of the first heat exchange channel 10. The plurality of first heat exchange sections 111 of the first heat exchange channel 10 are located between the first heat exchange section 111 that is furthest from the origin in the Y1 direction of the third heat exchange channel 40a and the second first heat exchange section 111 on the side of the third heat exchange channel 40a that is furthest from the origin in the Y1 direction.

[0267] The third heat exchange channel 40b is located between the fourth heat exchange section 125 of the third heat exchange channel 40a and the plurality of first heat exchange sections 111 of the third heat exchange channel 40a. The fourth heat exchange section 125 of the third heat exchange channel 40b is located on the side of the plurality of first heat exchange sections 111 of the third heat exchange channel 40b that is away from the origin in the Y1 direction. The third heat exchange section 122 of the third heat exchange channel 40b is connected to the first heat exchange section 111 of the third heat exchange channel 40b that is closest to the origin in the Y1 direction.

[0268] The first heat exchange channel 10 and the two third heat exchange channels 40 each include a first inlet / outlet section 15 and a second inlet / outlet section 17, wherein the first inlet / outlet section 15 and the second inlet / outlet section 17 are respectively connected to the fourth heat exchange section 125 and the first heat exchange section 111.

[0269] In the above embodiment, by providing a third heat exchange channel 40 including a U-shaped region 120 with the same structure as the first heat exchange channel 10, and at least a portion of the first heat exchange section 11 of the first heat exchange channel 10 being disposed within the U-shaped region 120 of the third heat exchange channel 40, the first heat exchange channel 10 and at least a portion of the third heat exchange channel 40 can be arranged around each other. In this way, the arrangement of the heat exchange channels can be arranged according to the heat exchange requirements of each part of the battery assembly 200, further increasing the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 400.

[0270] According to some embodiments of this application, such as Figures 8-9 As shown, the U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 is located in the outermost circumferential direction of the heat exchange element 100.

[0271] The U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 is formed as the outermost heat exchange channel of the heat exchange element 100. In this way, the U-shaped region 120 of the first heat exchange channel 10 can be used to exchange heat with the outer periphery of the battery module 200, thereby improving the heat exchange effect on the periphery of the battery module 200.

[0272] In the above embodiment, by setting the U-shaped region 120 of the second heat exchange section 12 of the first heat exchange channel 10 to be located in the outermost circumferential direction of the heat exchange element 100, the second heat exchange section 12 can exchange heat in the outer circumferential direction of the battery 400, which is beneficial to improve the temperature difference of the battery 400 in different environments and improve the service life of the battery 400 to a certain extent.

[0273] According to some embodiments of this application, the heat exchanger 100 includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along a first direction, and each heat exchange tube defines a heat exchange flow channel on its inner side.

[0274] The number of heat exchange tubes can be one, two, three or more, and the number of heat exchange tubes can be designed according to the size of the battery pack 200.

[0275] The heat exchange tube defines a heat exchange flow channel for the flow of heat exchange fluid. The shape of the heat exchange tube can be various, such as a circular tube or a flat tube; at the same time, the shape of the heat exchange flow channel defined by the heat exchange tube can also be various, such as a U-shaped heat exchange flow channel or a loop-shaped heat exchange flow channel.

[0276] Multiple heat exchange tubes are arranged in parallel. For example, the inlet ends of multiple heat exchange tubes are connected to the distribution chamber of the collector 20, and the outlet ends of multiple heat exchange tubes are all connected to the confluence chamber of the collector 20.

[0277] Multiple heat exchange tubes can be arranged sequentially along a first direction, for example, multiple heat exchange tubes can be arranged at intervals along the Y1 direction. Of course, multiple heat exchange tubes can also be arranged around each other, and further, multiple heat exchange tubes can be arranged around each other in the same plane.

[0278] In the above embodiments, by including at least one heat exchange tube in the heat exchanger 100, not only can the manufacturing complexity of the heat exchanger 100 be reduced, thereby increasing the production rate of the heat exchanger 100, but the fluid pressure drop within a single heat exchange tube can also be reduced, thus improving heat exchange efficiency. Furthermore, the tubular structure is simpler, lower in cost, and easier to process than the plate structure.

[0279] According to some embodiments of this application, the heat exchange tube can be formed by bending a single tube.

[0280] Single-tube bending refers to the process where a heat exchange tube is formed by repeatedly bending a single straight tube through processes such as pressing and rolling. For example, a single straight tube can be bent at multiple preset positions to form a V-shape, U-shape, or other shapes at the bending points. The bending shape of the single tube can be designed according to the actual situation.

[0281] In the above embodiments, by setting the heat exchange tube to be bent from a single tube, the number of weld points of the heat exchange component 100 can be reduced, thereby reducing the risk of leakage of the heat exchange component 100 and improving the reliability of the heat exchange component 100. At the same time, the operation process of bending a single tube is simpler than the manufacturing process of a plate structure, thereby significantly reducing the cost of the heat exchange component 100.

[0282] According to some embodiments of this application, the heat exchange tube is curved at the bend position.

[0283] Curved bends can reduce fluid flow resistance and pressure drop. Furthermore, the curved bends at the bend positions of the heat exchange tubes can increase the flow rate of the heat exchange fluid in the heat exchange channel, thereby increasing the heat exchange efficiency of the heat exchanger 100.

[0284] In the above embodiments, by setting the heat exchange tube to bend in an arc at the bend position, the flow resistance of the fluid can be reduced, the pressure drop can be reduced, and the flow rate of the heat exchange fluid in the heat exchange channel can be increased, thereby increasing the heat exchange efficiency of the heat exchange element 100.

[0285] According to some embodiments of this application, the bending angle of the heat exchange tube at the bend position is less than 180°.

[0286] The bending angle of the heat exchange tube at the bend can be 30°, 60°, 90°, 120°, 150° or 179°.

[0287] In the above embodiments, by setting the bending angle of the heat exchange tube at the bending position to be less than 180°, the probability of the heat exchange tube being damaged by bending can be reduced.

[0288] like Figure 3 and Figure 4 As shown, the width of the heat exchange tube is L1, the distance between adjacent tube segments within the same heat exchange tube and the distance between adjacent tube segments of adjacent heat exchange tubes are both L2, and both satisfy: L1≤L2≤2L1.

[0289] There can be multiple heat exchange tubes, which can be spaced apart in the first direction. Each heat exchange tube can have at least one tube segment (e.g., a tube segment defining the first heat exchange section 11, a tube segment defining the second heat exchange section 12, etc.). The distance between adjacent tube segments in the same heat exchange tube is the same as the distance between adjacent tube segments of adjacent heat exchange tubes (e.g., if there are two heat exchange tubes, namely the first heat exchange tube and the second heat exchange tube, then a tube segment of the first heat exchange tube located on one side of the first direction is adjacent to a tube segment of the second heat exchange tube located on the same side of the first direction) and is L2. This allows multiple tube segments to be arranged more evenly in the first direction, which can improve heat exchange uniformity and make temperature adjustment more consistent.

[0290] By ensuring that the width of the heat exchange tube and L2 meet the above ratio, the distance between adjacent tube segments is greater than the width of the heat exchange tube itself during the laying of the heat exchange tube. This can reduce the probability of interference between adjacent heat exchange tubes, reduce the difficulty of laying, improve assembly efficiency, and make the distance between adjacent tube segments more reasonable, thereby further improving the uniformity and consistency of temperature regulation.

[0291] The distance between adjacent heat exchange tubes shall not be less than 2 mm.

[0292] The distance between adjacent heat exchange tubes is 2mm, 3mm, etc., which makes the distance between adjacent heat exchange tubes more reasonable, improves the uniformity and consistency of temperature regulation, and ensures that adjacent heat exchange tubes have at least a 2mm gap, which can further reduce the difficulty of laying heat exchange tubes.

[0293] like Figure 3 and Figure 4 As shown, the support plate 320 defines a heat exchange surface perpendicular to the frame 310. The area of ​​the heat exchange surface is S1, and the projected coverage area of ​​the heat exchange component 100 on the heat exchange surface is S2. Both satisfy 0.3≤S1 / S2≤0.8.

[0294] The ratio between the heat exchange surface defined by the support plate 320 and the projected coverage area of ​​the heat exchange element 100 on the heat exchange surface is 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, etc. The coverage area of ​​the heat exchange element 100 on the heat exchange surface satisfies the above ratio relationship. If the ratio relationship is not less than 0.3, the heat exchange efficiency and heat exchange effect of the support plate 320 can be improved. If the ratio relationship is not greater than 0.8, the number of heating elements and the laying area can be reduced, and the structural strength and rigidity of the support plate 320 can be taken into account.

[0295] With a value of 0.3≤S1 / S2≤0.6, the structural strength, structural stiffness, heat exchange efficiency, and heat exchange effect of the support plate 320 can be further balanced.

[0296] The heat exchanger 100 is constructed as a flat tube with a width-to-thickness ratio of 1:1 to 40:1. This allows the heat exchanger 100 to have a larger area in the plane defined by the first and second directions, resulting in higher heat exchange effect and efficiency.

[0297] The width-to-thickness ratio is 4:1 to 8:1. This balances heat exchange effect and efficiency while avoiding an excessively large width-to-thickness ratio, thus reducing the space occupied by the heat exchanger 100 in the third direction and further reducing the thickness of the support plate 320. Fortunately, it also avoids an excessively small width-to-thickness ratio, keeping the flow resistance of the heat exchanger 100 within a reasonable range and preventing excessive flow resistance, so that the flow velocity of the heat exchange medium in the heat exchanger 100 can remain stable, thereby maintaining a stable heat exchange effect.

[0298] like Figure 19 As shown, according to some embodiments of this application, the buffer layer 322 is constructed as a porous structure.

[0299] The porous structure can be a honeycomb structure, a round hole structure, or a square hole structure. It can be densely laid within the plane defined by the first and second directions. By setting a porous structure, the weight of the buffer layer 322 can be reduced to improve the load on the support plate 320 and improve the contour of the bottom surface of the support plate 320. Furthermore, the structural strength and rigidity of the support plate 320 can be increased.

[0300] According to some embodiments of this application, the holes on the buffer layer 322 extend in opposite directions along the adjacent structural plates 321.

[0301] The hole structure of the buffer layer 322 extends in the vertical direction so that the buffer layer 322 can provide support for the upper structural plate 321 between adjacent structural plates 321, and realize a smooth and uniform mechanical transfer between the upper structural plate 321 and the lower structural plate 321, so as to further improve the structural strength and stiffness of the support plate 320.

[0302] According to some embodiments of this application, the buffer layer 322 is constructed of a plastic material or a metal material; when the buffer layer 322 is constructed of a plastic material, the buffer layer 322 is heat-fused to the structural plate 321; when the buffer layer 322 is constructed of a metal material, the buffer layer 322 is brazed to the structural plate 321.

[0303] The structural plate 321 can be made of stamped aluminum plate, and the heat exchanger 100 is welded to the uppermost structural plate 321 (e.g., brazing). A buffer layer 322 is set between adjacent structural plates 321. If the buffer layer 322 is made of plastic material, it is assembled by hot melt pressing. If the buffer layer 322 is made of metal material, it is connected by brazing. This makes the connection between the buffer layer 322 and the structural plate 321 more stable and the overall structural strength of the support plate 320 higher.

[0304] The heat exchanger 100 can be constructed as a heat exchange tube structure instead of a plate structure. This eliminates the need for a double-layer stamped plate structure for the heat exchanger, reducing the material usage of the heat exchanger 100, thereby lowering material costs and reducing process complexity. It also reduces the weight and load of the support plate 320, further improving the profile of the support plate 320 and the flatness of its bottom surface.

[0305] like Figure 20 and Figure 21As shown, according to some embodiments of this application, the structural plate 321 includes: a first structural plate 3211 to an Nth structural plate 3212 arranged sequentially in the arrangement direction of the frame 310 and the support plate 320, where N≥2, and at least the first structural plate 3211 and the Nth structural plate 3212 are connected to the frame 310.

[0306] In some embodiments, the structural plate 321 includes a first structural plate 3211 and a second structural plate 321, with a buffer layer 322 disposed between the first structural plate 3211 and the second structural plate 321, and a heating element disposed on the lower surface of the first structural plate 3211; in other embodiments, the structural plate 321 may include a first structural plate 3211, a second structural plate 321 and a third structural plate 321, with buffer layers 322 disposed between the first structural plate 3211 and the second structural plate 321, and between the second structural plate 321 and the third structural plate 321, and a heating element disposed on the lower surface of the first structural plate 3211.

[0307] By setting multiple structural plates 321 and connecting at least the first structural plate 3211 and the Nth structural plate 3212 to the frame 310, not only can the structural strength and rigidity of the support plate 320 be further improved, but the connection stability and reliability between the support plate 320 and the frame 310 can also be improved.

[0308] Combination Figure 16 , Figure 20 and Figure 21 As shown, according to some embodiments of this application, a connecting flange 311 is provided on the side of the frame 310 facing the support plate 320, the structural size of the buffer layer 322 is smaller than the structural size of the structural plate 321 to define the slot, and the connecting flange 311 extends into the slot; or the connecting flange 311 overlaps the first structural plate 3211.

[0309] In some embodiments, a slot is defined between adjacent structural plates 321, and a connecting flange 311 can be inserted into the slot and connected to the structural plate 321 within the slot, or the connecting flange 311 can directly overlap the upper surface of the structural plate 321 and be connected to the structural plate 321.

[0310] In this way, the structural plate 321 and the frame 310 can be connected. By setting the connecting flange 311, the frame 310 and the support plate 320 can have at least a partial overlap to achieve connection and fixation. This can also improve the connection stability and reliability between the structural plate 321 and the frame 310. At the same time, based on the overlap or plug-in relationship, only one or two sealing interfaces need to be formed. Compared with the prior art, the number of sealing interfaces can be reduced, the sealing cost is lower, and the sealing effect is better.

[0311] According to some embodiments of this application, the minimum overlap dimension w1 between the structural plate 321 and the connecting flange 311 is 6 mm.

[0312] The overlap dimension of the two sides of the structural plate 321 and the connecting flange 311 in the first direction is not less than 6mm, and the overlap dimension of the two sides of the structural plate 321 and the connecting flange 311 in the second direction is also not less than 6mm, so that the area of ​​the connection region between the connecting flange 311 and the structural plate 321 is larger, which improves the connection strength, makes welding easier, and increases processing efficiency.

[0313] According to some embodiments of this application, the structural dimensions of the first structural plate 3211 are smaller than the structural dimensions of the Nth structural plate 3212, and the first structural plate 3211 is connected to the connecting flange 311, while the Nth structural plate 3212 is connected to the end face of the frame 310; or the structural dimensions of the first structural plate 3211 are equal to the structural dimensions of the Nth structural plate 3212, and both the first structural plate 3211 and the Nth structural plate 3212 are connected to the connecting flange 311.

[0314] like Figure 21 As shown, in an embodiment where the structural dimensions of the first structural plate 3211 are smaller than those of the Nth structural plate 3212, and the first structural plate 3211 is connected to the connecting flange 311, and the Nth structural plate 3212 is connected to the end face of the frame 310, the first structural plate 3211 and the connecting flange 311 are connected by an FSW process, and the Nth structural plate 3212 and the end face of the frame 310 are connected by an FDS process; Figure 20 As shown, in an embodiment where the structural dimensions of the first structural plate 3211 are equal to those of the Nth structural plate 3212, and both the first structural plate 3211 and the Nth structural plate 3212 are connected to the connecting flange 311, the first structural plate 3211 and the connecting flange 311, and the Nth structural plate 3212 and the connecting flange 311 are all connected by the FSW process.

[0315] FSW refers to friction stir welding, and FDW refers to hot melt self-tapping welding. In the embodiment where both the first structural plate 3211 and the second structural plate 321 are connected by friction stir welding, two sealing interfaces are formed between the first structural plate 3211 and the connecting flange 311, and between the second structural plate 321 and the connecting flange 311. In the embodiment where the second structural plate 321 is connected by hot melt self-tapping welding, three sealing interfaces are formed between the first structural plate 3211 and the connecting flange 311, between the second structural plate 321 and the connecting flange 311, and between the self-tapping screw and the frame. The number of sealing interfaces is lower than that of the prior art, which can reduce the number of sealing interfaces and reduce sealing costs. Moreover, they all have high connection stability and reliability, which can improve the structural strength and stability of the housing 300.

[0316] This application provides a battery 400, including: the housing 300 in the above embodiments.

[0317] According to some embodiments of this application, such as Figures 10-15 As shown, the battery 400 specifically includes: a battery assembly 200, which includes a battery cell 201, and the battery cell 201 includes components along a third direction (e.g., ...). Figures 10-15 Multiple battery cells 2011 are arranged in sequence in the X2 direction (as shown); a heat exchanger 100 is disposed in the battery assembly 200 in the fourth direction (e.g., in the X2 direction). Figure 2 It is located on one side of the Z direction (as shown) and heat-exchanges with the battery assembly 200; the third and fourth directions are set at an angle.

[0318] Battery module 200 is mainly used for storing and releasing energy and is the core component of battery 400. Heat exchanger 100 is used to exchange heat with battery module 200, so that the temperature of battery module 200 can be maintained within the safe operating temperature, thereby improving the reliability and service life of battery module 200.

[0319] Additionally, the phrase "the third and fourth directions are arranged at an angle" is intended to indicate that the third and fourth directions can be arranged perpendicularly, for example... Figure 2 As shown, the third direction can be the thickness direction of the battery cell 2011, i.e. Figure 2 The X2 direction shown can be the fourth direction, which can be the height direction of the battery cell 2011. Figure 2 The Z direction is shown; thus, multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011 to form a battery unit 201, and the heat exchanger 100 is arranged on one side of the height direction of the battery assembly 200 for heat exchange with the battery assembly 200. The third and fourth directions can also be arranged only intersecting and not perpendicular, for example, the third and fourth directions can be arranged at an angle of 30°, 60° or 80°.

[0320] The number of battery cells 201 can be one or more. For example, the number of battery cells 201 can be one, two, three or more.

[0321] In the above embodiments, by setting the heat exchanger 100 on one side of the battery assembly 200 in the fourth direction and exchanging heat with the battery assembly 200, the temperature of the battery assembly 200 can be maintained within a safe operating temperature, thereby improving the reliability and service life of the battery assembly 200. According to some embodiments of this application, such as Figure 3 and Figure 10As shown, the battery module 200 consists of a plurality of battery cells 2011 located on the outermost periphery, forming an outer battery cell group, and at least a portion of the second heat exchange section 12 is in contact with the outer battery cell group.

[0322] The second heat exchange section 12 can be at least partially or completely attached to the outer battery cell group. Since the periphery of the battery module 200 dissipates more heat to the environment, the temperature of the outer battery cell group is relatively lower than that of the inner battery cells. Meanwhile, the temperature of the heat exchange fluid within the second heat exchange section 12 remains the highest. Therefore, by having at least a portion of the second heat exchange section 12 attached to the outer battery cell group, the heat exchange efficiency of the outer battery cell group can be improved, thereby further balancing the temperature difference in the battery module 200 caused by heat dissipation.

[0323] In the above embodiments, by setting at least a portion of the second heat exchange section 12 to be in contact with the outer battery cell group, the heat exchange efficiency of the outer battery cell group can be improved, thereby further balancing the temperature difference of the battery module 200 caused by heat dissipation.

[0324] According to some embodiments of this application, such as Figure 6 and Figure 11 As shown, the battery assembly 200 includes a battery cell 201, and all the battery cells 2011 of the battery cell 201 together form a peripheral battery cell; or, the battery assembly 200 includes multiple battery cells 201, and the multiple battery cells 201 are arranged along a fifth direction (e.g., Figure 11 As shown in the Y2 direction, multiple battery units 201 are arranged sequentially. Multiple battery cells 201 located on the outermost periphery of the battery assembly 200 together form an outer battery cell. The third, fourth, and fifth directions are set at angles to each other.

[0325] The number of battery cells 201 included in the battery assembly 200 can be designed according to actual conditions. The number of battery cells 201 can be one or more. For example, the number of battery cells 201 can be one, two, three or more.

[0326] When the battery assembly 200 includes a battery cell 201, all the battery cells 2011 of the battery cell 201 together form an outer battery cell. At this time, the entire second heat exchange section 12 and the first heat exchange section 11 exchange heat with the outer battery cells. Specifically, the second heat exchange section 12 exchanges heat with the periphery of the outer battery cells, and the first heat exchange section 11 exchanges heat with the middle position of the outer battery cells.

[0327] When the battery module 200 includes multiple battery cells 201, the multiple battery cells 201 located on the outermost periphery of the battery module 200 together form an outer battery cell. This can limit the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange channel.

[0328] In the above embodiments, when the battery assembly 200 includes a battery cell 201, all the battery cells 2011 of the battery cell 201 together form an outer battery cell. At this time, the entire second heat exchange section 12 and the first heat exchange section 11 exchange heat with the outer battery cells. Therefore, the specific structure and layout of the second heat exchange section 12 and the first heat exchange section 11 are not limited, thereby reducing the layout complexity of the first heat exchange channel 10. By setting multiple battery cells 201 located at the outermost edge of the battery assembly 200 and multiple battery cells 2011 together to form an outer battery cell, the heat exchange position of the second heat exchange section 12 can be defined, which is beneficial to the layout of the heat exchange channel.

[0329] In the above embodiment, by setting multiple battery cells 201 to be located at the outermost periphery of the battery assembly 200, multiple battery cells 2011 together form an outer battery cell, thereby defining the heat exchange position of the second heat exchange section 12, which is beneficial to the layout of the heat exchange channel.

[0330] Please refer to it again. Figure 3 and Figure 10 The peripheral battery cell group includes a first group of battery cells 202, a second group of battery cells 203 and a third group of battery cells 204 arranged adjacent to each other. The first group of battery cells 202 includes multiple battery cells 2011 stacked along a third direction, the second group of battery cells 203 includes multiple battery cells 2011 stacked along a fifth direction, and the third group of battery cells 204 includes multiple battery cells 2011 stacked along a fifth direction.

[0331] For example Figure 10 As shown, the third direction can be the thickness direction of the battery cell 2011, that is, as... Figure 10 The X2 direction shown can be the length direction of the battery cell 2011, i.e. Figure 10 The Y2 direction is shown. Therefore, the first group of battery cells 202 includes multiple battery cells 2011 stacked along the thickness direction of the battery cells 2011; the second group of battery cells 203 includes multiple battery cells 2011 stacked along the length direction of the battery cells 2011; and the third group of battery cells 204 includes multiple battery cells 2011 stacked along the length direction of the battery cells 2011, as shown. Figure 10As shown, the first group of battery cells 202 is arranged at one end of the battery assembly 200 in the Y2 direction; the second group of battery cells 203 and the third group of battery cells 204 are respectively arranged at both ends of the battery assembly 200 in the X1 direction.

[0332] The second heat exchange section 12 includes a second heat exchange part 121, a third heat exchange part 122, and a fourth heat exchange part 125 connected together; the second heat exchange part 121 extends and adheres to the first group of battery cells 202 to enable heat exchange, and / or the third heat exchange part 122 extends and adheres to the second group of battery cells 203 to enable heat exchange, and / or the fourth heat exchange part 125 extends and adheres to the third group of battery cells 204 to enable heat exchange.

[0333] When the second heat exchange section 12 is in contact with the outer battery cells for heat exchange, only one of the second heat exchange section 121, the third heat exchange section 122, or the fourth heat exchange section 125 may be in contact with the outer battery cells. For example, the second heat exchange section 121 may be in contact with the first group of battery cells 202, or the third heat exchange section 122 may be in contact with the second group of battery cells 203, or the fourth heat exchange section 125 may be in contact with the third group of battery cells 204. Alternatively, two of the second heat exchange sections 121, the third heat exchange section 122, or the fourth heat exchange section 125 may be in contact with the outer battery cells. For example, the second heat exchange section 121 may be in contact with the first group of battery cells 202, and the third heat exchange section 122 may be in contact with the second group of battery cells 204. The heat exchange can be achieved by bonding the second heat exchange section 121 with the first group of battery cells 202, and the heat exchange section 125 with the third group of battery cells 204; or by bonding the third heat exchange section 122 with the second group of battery cells 203, and the heat exchange section 125 with the third group of battery cells 204. Alternatively, the second heat exchange section 121, the third heat exchange section 122, and the fourth heat exchange section 125 can all be bonded to the outer battery cells, such as the second heat exchange section 121 bonding to the first group of battery cells 202, the third heat exchange section 122 bonding to the second group of battery cells 203, and the fourth heat exchange section 125 bonding to the third group of battery cells 204.

[0334] In the above embodiments, since the first group of battery cells 202, the second group of battery cells 203, and the third group of battery cells 204 are all peripheral battery cell groups, and the peripheral battery cell groups are arranged at the outermost edge of the battery assembly 200, closest to the side wall of the battery box 300, they have more heat exchange with the environment and their temperature is relatively lower than that of battery cells in other positions. Therefore, by setting at least one of the second heat exchange part 121, the third heat exchange part 122, and the fourth heat exchange part 125 to be in close contact with the peripheral battery cells for heat exchange, the heat exchange component 100 can stably and reliably cool or heat the peripheral battery cell groups, so that the battery assembly 200 can have a good heat exchange effect, the temperature distribution inside the battery assembly 200 is more uniform, and thus the battery 400 operates more stably.

[0335] According to some embodiments of this application, such as Figure 12 As shown, the peripheral battery cell also includes a fourth group of battery cells 205. The fourth group of battery cells 205 includes a plurality of battery cells 2011 arranged along a third direction. The second heat exchange section 12 also includes a fifth heat exchange section 127. The fifth heat exchange section 127 closes at least a portion of the opening of the U-shaped region 120 formed by the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125. The fifth heat exchange section 127 extends and adheres to the fourth group of battery cells 205 to enable heat exchange.

[0336] In the above embodiment, the peripheral battery cell group also includes a fourth group of battery cells 205. The fourth group of battery cells 205 can be arranged opposite to the first group of battery cells 202 in the fifth direction, and the fourth group of battery cells 205 is disposed on the side of the battery assembly 200 near the sidewall of the battery 400. For example, the fourth group of battery cells 205 and the first group of battery cells 202 can be respectively arranged at both ends of the Y2 of the battery assembly 200. The fifth heat exchange section 127 of the second heat exchange section 12 is in contact with the fourth group of battery cells 205. When the heat exchange fluid flows along the second heat exchange section 12, the heat exchange fluid exchanges heat with the fourth battery cell group along the fifth heat exchange section 127.

[0337] When the heat exchanger 100 exchanges heat with the battery assembly 200, the heat exchange fluid first enters the second heat exchange section 12. Within the second heat exchange section 12, the fluid flows into the fourth heat exchange part 125, where it flows along the fifth direction and exchanges heat with the third group of battery cells 204. Then, it enters the second heat exchange part 121, where it flows along the third direction and exchanges heat with the first group of battery cells 202. Next, it enters the third heat exchange part 122, where it flows along the fifth direction and exchanges heat with the second group of battery cells 203. Finally, it enters the fifth heat exchange part 127, where it flows along the third direction and exchanges heat with the fourth group of battery cells 205. Finally, the heat exchange fluid flows back into the first heat exchange section 11 to exchange heat with the battery cells 2011 located inside the outer battery cell group within the battery assembly 200. Of course, the heat exchange fluid can also flow into the first heat exchange section 11 and then into the second heat exchange section 12 to exchange heat with the battery assembly 200, which will not be elaborated here.

[0338] In the above embodiment, the fifth heat exchange section 127 is provided in the second heat exchange section 12 to be in contact with the fourth group of battery cells 205. This allows the heat exchange component 100 to better match the heat dissipation of the battery cells 2011 at different positions in the battery 400 for the arrangement of heat exchange channels. This makes the heat exchange component 100 have a better heat exchange effect on the battery assembly 200, thereby making the internal temperature distribution of the battery 400 more uniform during operation and making the operation of the battery 400 more stable.

[0339] Please refer to it again. Figure 3 and 10 In the embodiments of this application, the second heat exchange section 121 extends along the second direction, which is the same as the third direction; the third heat exchange section 122 and the fourth heat exchange section 125 extend along the first direction, which is the same as the fifth direction.

[0340] The battery cell 201 includes a plurality of battery cells 2011 stacked sequentially along a third direction. The plurality of battery cells 201 are arranged sequentially along a fifth direction. Thus, the second heat exchange section 121 extends along the stacking direction of the plurality of battery cells 2011, and the third heat exchange section 122 and the fourth heat exchange section 125 extend along the arrangement direction of the plurality of battery cells 201. That is, the second heat exchange section 121 can exchange heat with the plurality of battery cells 2011 of a battery cell 201, and the third heat exchange section 122 and the fourth heat exchange section 125 can exchange heat with the plurality of battery cells 2011 of the plurality of battery cells 201.

[0341] There are generally two ways to stack multiple battery cells 2011: one is to stack them along the thickness direction of the battery cell 2011, and the other is to stack them along the length direction of the battery cell 2011. When multiple battery cells 2011 are stacked along the thickness direction of the battery cell 2011, the multiple battery cells 201 are arranged sequentially along the length direction of the battery cell 2011; when multiple battery cells 2011 are stacked along the length direction of the battery cell 2011, the multiple battery cells 201 are arranged sequentially along the thickness direction of the battery cell 2011. Therefore, when multiple battery cells 2011 are stacked along the thickness direction of the battery cells 2011, the second heat exchange section 121 can exchange heat with the multiple battery cells 2011 of a battery unit 201 along the thickness direction of the battery cells 2011, and the third heat exchange section 122 and the fourth heat exchange section 125 can exchange heat with the multiple battery cells 2011 of the multiple battery units 201 along the length direction of the battery cells 2011; when multiple battery cells 2011 are stacked along the length direction of the battery cells 2011, the second heat exchange section 121 can exchange heat with the multiple battery cells 2011 of a battery unit 201 along the length direction of the battery cells 2011, and the third heat exchange section 122 and the fourth heat exchange section 125 can exchange heat with the multiple battery cells 2011 of the multiple battery units 201 along the width direction of the battery cells 2011, thus ensuring heat exchange efficiency and effect.

[0342] Please refer to it again. Figure 10 The second direction is the thickness direction of the battery cell 2011, that is, as shown in the figure. Figure 10 The X2 direction shown is the first direction, which is the length direction of the battery cell 2011, i.e. Figure 10As shown in the Y2 direction, the battery cell 201 includes a plurality of battery cells 2011 stacked along the thickness direction of the battery cells 2011, and the battery assembly 200 includes a plurality of battery cells 201 arranged sequentially along the length direction of the battery cells 2011. Thus, the second heat exchange section 121 can extend along the thickness direction of the battery cells 2011 to exchange heat with the plurality of battery cells 2011; the third heat exchange section 122 and the fourth heat exchange section 125 can extend along the length direction of the battery cells 2011 and exchange heat with the battery cells 2011. Thus, the arrangement of the first heat exchange channel 10 of the heat exchange component 100 can be more reasonable, and the heat exchange effect of the heat exchange component 100 on the battery assembly 200 can be enhanced.

[0343] In the above embodiment, by setting the second heat exchange section 121 to extend along the second direction, which is the same as the third direction, and the third heat exchange section 122 and the fourth heat exchange section 125 to extend along the first direction, which is the same as the fifth direction, the extension directions of the second heat exchange section 121, the third heat exchange section 122 and the fourth heat exchange section 125 can be designed according to the arrangement of the battery cell 201. As a result, the arrangement of the first heat exchange channel 10 can better meet the heat exchange requirements of the battery module 200 and improve the heat exchange efficiency.

[0344] Please refer to it again. Figure 13 In the embodiments of this application, the first heat exchange section 111 extends along a first direction, and the first direction and the fifth direction are the same direction.

[0345] In this embodiment, the first heat exchange section 111, the third heat exchange section 122 and the fourth heat exchange section 125 can all extend along the first direction, and the second heat exchange section 121 extends along the second direction. In this way, the multiple first heat exchange sections 111 connected together can form an S-shaped heat exchange channel extending along the second direction.

[0346] The first direction can be the length direction of the battery cell 2011, for example Figure 13 As shown, the first direction is the length direction of the battery cell 2011, that is... Figure 13 As shown in the Y2 direction, the first heat exchange section 111 extends along the length direction of the battery cell 2011 and exchanges heat with the battery cell 2011. In this way, the heat exchange area between the first heat exchange section 111 and the battery cell 2011 can be increased, thereby increasing the heat exchange effect of the battery cell 2011. Alternatively, it can be along the thickness direction of the battery cell 2011, so that heat exchange can be achieved for multiple battery cells 2011.

[0347] In the above embodiments, by setting the first heat exchange section 111 to extend along the first direction, and the first direction and the fifth direction being the same direction, the first heat exchange section 111 can extend along the arrangement direction of the plurality of battery cells 201, thereby the first heat exchange section 111 can exchange heat with the plurality of battery cells 2011 of the plurality of battery cells 201. When the plurality of battery cells 201 are arranged sequentially along the thickness direction of the battery cells 2011, the first heat exchange section 111 can achieve heat exchange with the plurality of battery cells 2011. When the plurality of battery cells 201 are arranged sequentially along the length direction of the battery cells 2011, the heat exchange area between the first heat exchange section 111 and the battery cells 2011 increases, thereby increasing the heat exchange effect of the battery cells 2011.

[0348] In some specific embodiments of this application, the first heat exchange section 111 extends along a second direction, and the second direction and the third direction are the same direction.

[0349] The first heat exchange section 111 and the second heat exchange section 121 extend in the same direction and are arranged in parallel at intervals.

[0350] For example Figure 12 As shown, the second direction is the thickness direction of the battery cell 2011, i.e. Figure 12 In the direction of X2 shown, both the first heat exchange section 111 and the second heat exchange section 121 can exchange heat with multiple battery cells 2011. This helps to reduce the number of first heat exchange sections 111, reduce the number of bends in the first heat exchange channel 10, reduce the pressure drop of the heat exchange fluid in the first heat exchange channel 10, and improve the heat exchange efficiency.

[0351] In the above embodiments, by setting the first heat exchange section 111 to extend along the second direction, the number of first heat exchange sections 111 can be reduced, the number of bends in the first heat exchange channel 10 can be reduced, the pressure drop of the heat exchange fluid in the first heat exchange channel 10 can be reduced, and the heat exchange efficiency can be improved.

[0352] Please refer to it again. Figures 10-15 In the embodiments of this application, the battery assembly 200 includes a plurality of battery cells 201 arranged sequentially along the fifth direction. At least one battery cell 201 located at both ends of the fifth direction is a first group of battery cells 202. The second heat exchange section 121 and at least one first heat exchange section 111 of the first heat exchange segment 11 are together attached to the first group of battery cells 202 so as to perform heat exchange.

[0353] The above-mentioned "at least one battery cell 201 at both ends in the fifth direction is a first group of battery cells 202" is intended to indicate that either one of the battery cells 201 at both ends in the fifth direction can be formed as the first group of battery cells 202, or both battery cells 201 at both ends in the fifth direction can be formed as the first group of battery cells 202.

[0354] The above statement that "the second heat exchange section 121 and at least one first heat exchange section 111 of the first heat exchange segment 11 are together in contact with the first group of battery cells 202" is intended to indicate that the first group of battery cells 202 can be in contact with the second heat exchange section 121 and one first heat exchange section 111 for heat exchange, or it can be in contact with the second heat exchange section 121 and multiple first heat exchange sections 111 for heat exchange. For example, the number of first heat exchange sections 111 that are in contact with the first group of battery cells 202 for heat exchange can be two, three or more.

[0355] In the above embodiments, by setting at least one first heat exchange section 111 of the second heat exchange section 121 and the first heat exchange section 11 to be in contact with the first group of battery cells 202 for heat exchange, the heat exchange area between the first heat exchange channel 10 and the first group of battery cells 202 can be increased. At the same time, the temperature difference at different positions of the first group of battery cells 202 can be balanced, thereby improving the temperature uniformity of the first group of battery cells 202.

[0356] According to some embodiments of this application, such as Figure 10 As shown, there are multiple first heat exchange sections 111, and they are arranged in the first direction (e.g., Figure 10 The second heat exchange section 121 and the first heat exchange section 111, which is furthest from the second heat exchange section 121 along the line connecting them, exchange heat with the first group of battery cells 202.

[0357] Both the first heat exchange section 111 and the second heat exchange section 121 are along the second direction (e.g., Figure 10 Extending in the X1 direction shown, the first heat exchange section 111 and the second heat exchange section 121 are connected by a third heat exchange section 122. The third heat exchange section 122 is connected to the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the first direction. Thus, the second heat exchange section 121 and the first heat exchange section 111 that is furthest from the second heat exchange section 121 along the connecting line connected to the second heat exchange section 121 exchange heat with the first group of battery cells 202. In other words, the second heat exchange section 121 and the first heat exchange section 111 that is closest to the second heat exchange section 121 exchange heat with the first group of battery cells 202.

[0358] When the battery assembly 200 is heated, the high-temperature heat exchange fluid can enter the second heat exchange section 121 through the fourth heat exchange section 125. At this time, the temperature of the heat exchange fluid in the second heat exchange section 121 is relatively high. Then, the heat exchange fluid flows through the third heat exchange section 122 to the first heat exchange section 11. In the first heat exchange section 11, the heat exchange fluid first enters the first heat exchange section 111 that is farthest from the second heat exchange section 121. Then, it passes through multiple first heat exchange sections 111 in sequence to exchange heat with the battery assembly 200 until it flows to the first heat exchange section 111 that is farthest from the second heat exchange section 121 along the fluid flow direction. The first heat exchange section 111 is closest to the second heat exchange section 121 in a straight line and exchanges heat with the first group of battery cells 202 together with the second heat exchange section 121. The temperature of the heat exchange fluid entering the second heat exchange section 121 is relatively high, close to the inlet temperature of the first heat exchange channel 10. The temperature of the heat exchange fluid in the first heat exchange section 111, which is closest to the second heat exchange section 121, is relatively low, close to the outlet temperature of the first heat exchange channel 10.

[0359] When cooling the battery assembly 200, the low-temperature heat exchange fluid first enters the first heat exchange section 11. Within the first heat exchange section 11, the fluid first enters the first heat exchange section 111, which is adjacent to the second heat exchange section 121, and exchanges heat with the first group of battery cells 202. Then, it flows sequentially through multiple first heat exchange sections 111, exchanging heat with the battery assembly 200. Finally, it enters the third heat exchange section 122 through the first heat exchange section 111 furthest from the second heat exchange section 121, and then flows back to the second heat exchange section 121. During the heat exchange process, the temperature of the heat exchange fluid in the first heat exchange section 111 closest to the second heat exchange section 121 is lower, close to the inlet temperature of the first heat exchange channel 10. The temperature of the heat exchange fluid entering the second heat exchange section 121 is higher, close to the outlet temperature of the first heat exchange channel 10.

[0360] The second heat exchange section 121, together with the adjacent first heat exchange section 111, exchanges heat with the first group of battery cells 202, which can balance the temperature difference of the first group of battery cells 202 and thus improve the temperature uniformity of the first group of battery cells 202. At the same time, due to heat dissipation from the periphery of the battery assembly 200 and the environment, the first group of battery cells 202 dissipates more heat than the battery cells 2011 located in the middle of the battery assembly 200, resulting in a lower temperature. Therefore, the higher-temperature fluid flowing in the second heat exchange section 121 exchanges heat with the first group of battery cells 202, which can increase the temperature of the first group of battery cells 202, make up for the heat lost by the first group of battery cells 202 due to heat exchange with the environment, and thus improve the temperature uniformity of the first group of battery cells 202 and the other battery cells 2011.

[0361] The temperature at the edge of the first group of battery cells 202 is relatively lower than that on the other side. As a result, the first group of battery cells 202 exchanges heat with the second heat exchange section 121 and the first heat exchange section 111, which is the furthest away from the second heat exchange section 121 along the sequentially connected line. This can balance the temperature difference on both sides of the first group of battery cells 202 and improve the temperature uniformity of the first group of battery cells 202.

[0362] In the above embodiment, by setting the second heat exchange section 121 and the first heat exchange section 111, which is furthest away from the second heat exchange section 121 along the connecting line connected to it, to exchange heat with the first group of battery cells 202, the second heat exchange section 121 and the adjacent first heat exchange section 111 exchange heat with the first group of battery cells 202. This allows the second heat exchange section 121 to exchange heat with the edge of the first group of battery cells 202, and the first heat exchange section 111 to exchange heat with the other side of the first group of battery cells 202. The temperature difference between the heat exchange fluid in the second heat exchange section 121 and the fluid in the first heat exchange section 111 is large, and the heat exchange temperature of the first group of battery cells 202 is approximately the average temperature of the second heat exchange section 121 and the adjacent first heat exchange section 111. This balances the temperature difference of the first group of battery cells 202, thereby improving the temperature uniformity of the first group of battery cells 202.

[0363] According to some embodiments of this application, such as Figure 3 As shown, the second heat exchange section 12 includes a second heat exchange part 121, a third heat exchange part 122 and a fourth heat exchange part 125 connected together. The first end of the third heat exchange part 122 is connected to the second heat exchange part 121 at an angle, and the second end of the third heat exchange part 122 is connected to the first heat exchange section 11 at an angle.

[0364] In some specific embodiments, the second heat exchange section 121 extends and adheres to the first group of battery cells 202 to enable heat exchange, the third heat exchange section 122 extends and adheres to the second group of battery cells 203 to enable heat exchange, and the fourth heat exchange section 125 extends and adheres to the third group of battery cells 204 to enable heat exchange.

[0365] Since the first group of battery cells 202 comprises multiple battery cells 2011 stacked along a third direction, the second group of battery cells 203 comprises multiple battery cells 2011 stacked along a fifth direction, and the third group of battery cells 204 comprises multiple battery cells 2011 stacked along a fifth direction, the second heat exchange section 121 extends and adheres to the first group of battery cells 202, that is, the second heat exchange section 121 extends along a third direction and exchanges heat with the first group of battery cells 202; the third heat exchange section 122 extends and adheres to the second group of battery cells 203, that is, the third heat exchange section 122 extends along a fifth direction and exchanges heat with the second group of battery cells 203; and the fourth heat exchange section 125 extends and adheres to the third group of battery cells 204, that is, the fourth heat exchange section 125 extends along a fifth direction and exchanges heat with the third group of battery cells.

[0366] In the above embodiment, by providing a second heat exchange section 121 that extends and adheres to the first group of battery cells 202 to enable heat exchange, a third heat exchange section 122 that extends and adheres to the second group of battery cells 203 to enable heat exchange, and a fourth heat exchange section 125 that extends and adheres to the third group of battery cells 204 to enable heat exchange, the second heat exchange section 12 can exchange heat with the periphery of the battery assembly 200, thereby balancing the temperature difference caused by heat dissipation in the battery assembly 200.

[0367] In some other embodiments, the second heat exchange section 121 is attached to the second group of battery cells 203 to enable heat exchange, and the third heat exchange section 122 is attached to the first group of battery cells 202 to enable heat exchange.

[0368] The first group of battery cells 202 comprises multiple battery cells 2011 stacked along a third direction, and the second group of battery cells 203 comprises multiple battery cells 2011 stacked along a fifth direction. A second heat exchange section 121 is attached to the second group of battery cells 203, and a third heat exchange section 122 is attached to the first group of battery cells 202. That is, the second heat exchange section 121 extends along the fifth direction and is attached to the second group of battery cells 203 for heat exchange, while the third heat exchange section 122 extends along a third direction and is attached to the first group of battery cells 202 for heat exchange.

[0369] In the above embodiments, by setting the second heat exchange section 121 to be attached to the second group of battery cells 203 to exchange heat, and the third heat exchange section 122 to be attached to the first group of battery cells 202 to exchange heat, the heat exchange component 100 can be designed with heat exchange channels according to the arrangement of multiple battery cells 2011, thereby improving the applicability of the heat exchange component 100, enabling it to meet the cooling requirements of different batteries 400, and increasing the heat exchange efficiency and temperature uniformity of the batteries 400.

[0370] According to some embodiments of this application, such as Figure 3 and Figure 10 As shown, the first heat exchange channel 10 further includes a third heat exchange section 13, which is connected to the end of the first heat exchange section 11 away from the second heat exchange section 12 along the fluid flow direction and is connected to the first heat exchange section 11 at an angle; the battery assembly 200 also has a fifth group of battery cells 206, which includes a plurality of battery cells 2011 stacked along the fifth direction, and the fifth group of battery cells 206 is arranged adjacent to the third group of battery cells 204. In some specific embodiments, the third heat exchange section 13 and the fourth heat exchange section 125 are both attached to the third group of battery cells 204 so that heat exchange can be performed.

[0371] The third heat exchange section 13 is connected to the end of the first heat exchange section 11 away from the second heat exchange section 12 along the fluid flow direction. The fourth heat exchange section 125, the second heat exchange section 121, and the third heat exchange section 122 are sequentially connected to form a U-shaped structure, and the other end of the third heat exchange section 122 is bent and connected to the first heat exchange section 11. Thus, the third heat exchange section 13 and the fourth heat exchange section 125 can serve as the liquid inlet and liquid outlet of the first heat exchange channel 10, respectively. When the third heat exchange section 13 serves as the liquid inlet of the first heat exchange channel 10, the fourth heat exchange section 125 can serve as the liquid outlet of the first heat exchange channel 10; when the third heat exchange section 13 serves as the liquid outlet of the first heat exchange channel 10, the fourth heat exchange section 125 can serve as the liquid inlet of the first heat exchange channel 10.

[0372] The heat exchange fluids in the third heat exchange section 13 and the fourth heat exchange section 125 flow in opposite directions, resulting in the greatest temperature difference. For example, when liquid is introduced into the fourth heat exchange section 125 to heat and maintain the temperature of the battery 400, the temperature of the fourth heat exchange section 125 is the highest, and the temperature of the third heat exchange section 13 is the lowest. Conversely, when cooling the battery 400, the temperature of the fourth heat exchange section 125 is the lowest, and the temperature of the third heat exchange section 13 is the highest. Therefore, when both the third heat exchange section 13 and the fourth heat exchange section 125 are in contact with the third group of battery cells 204 to exchange heat, the temperature difference of the third group of battery cells 204 can be balanced, improving the temperature uniformity of the third group of battery cells 204.

[0373] In some other embodiments, the third heat exchange section 13 is bonded to the fifth group of battery cells 206 to enable heat exchange, and the fourth heat exchange section 125 is bonded to the third group of battery cells 204 to enable heat exchange.

[0374] In this embodiment, both the third heat exchange section 13 and the fourth heat exchange section 125 extend along the fifth direction. When the fifth direction is the length direction of the battery cell 2011, the contact area between the third heat exchange section 13 and the fourth heat exchange section 31 and the battery cell 2011 can be increased, thereby increasing the heat exchange effect on the fifth group of battery cells 206 and the third group of battery cells 204. At the same time, since the fifth group of battery cells 206 and the third group of battery cells 204 are arranged adjacent to each other, the third heat exchange section 13 and the fifth group of battery cells 206 are in contact to exchange heat, and the fourth heat exchange section 125 and the third group of battery cells 204 are in contact to exchange heat. This also balances the temperature difference caused by the water temperature difference at the edge of the battery assembly 200.

[0375] In some other specific embodiments, the third heat exchange section 13 is attached to the third group of battery cells 204 to enable heat exchange, and the fourth heat exchange section 125 is arranged on the outer side of the battery assembly 200 in the third direction.

[0376] The fourth heat exchange section 125 does not exchange heat with the battery assembly 200. The third heat exchange section 122 extends in the fifth direction and is in contact with the third group of battery cells 204 for heat exchange. Therefore, when the fifth direction is the length direction of the battery cell 2011, the contact area between the third heat exchange section 13 and the third group of battery cells 204 can be increased, thereby improving the heat exchange effect of the heat exchange component 100.

[0377] In the above embodiment, by setting the third heat exchange section 13 and the fourth heat exchange section 125 to be in contact with the third group of battery cells 204 for heat exchange, the temperature difference of the third group of battery cells 204 can be balanced, and the temperature uniformity of the third group of battery cells 204 can be improved. By setting the third heat exchange section 13 to be in contact with the third group of battery cells 204 for heat exchange, and the fourth heat exchange section 125 to be arranged on the outer side of the battery assembly 200 in the third direction, the heat exchange process can be simplified and the production difficulty of the heat exchange component 100 can be reduced.

[0378] According to some embodiments of this application, such as Figures 10-15 As shown, the first heat exchange section 111 of the first heat exchange section 11 and the second heat exchange section 121 of the second heat exchange section 12 are both along the second direction (e.g., Figure 10 Extending in the X1 direction (as shown) and in the first direction (e.g.) Figure 10 Arranged at intervals along the Y1 direction (as shown), a battery cell 201 is attached to a second heat exchange section 121 and at least one first heat exchange section 111 to enable heat exchange; or, a battery cell 201 is attached to at least two first heat exchange sections 111 to enable heat exchange.

[0379] In some embodiments, a battery cell 201 is bonded to a second heat exchanger 121 and at least one first heat exchanger 111 to enable heat exchange. The number of first heat exchangers 111 that share heat exchange with the second heat exchanger 121 on the same battery cell 201 can be one, two, three, or more. In other embodiments, a battery cell 201 is bonded to at least two first heat exchangers 111 to enable heat exchange. For example, when a battery cell 201 exchanges heat only with the first heat exchangers 111, the number of first heat exchangers 111 can be two, three, four, or more. That is, a battery cell 201 exchanges heat with at least two heat exchangers, which not only increases the heat exchange area and thus the heat exchange effect, but also improves the temperature uniformity of the battery cell 201.

[0380] In the above embodiments, by setting one battery cell 201 to be attached to one second heat exchange part 121 and at least one first heat exchange part 111 to enable heat exchange; or, one battery cell 201 to be attached to at least two first heat exchange parts 111 to enable heat exchange, one battery cell 201 can exchange heat with at least two heat exchange parts, thus increasing the heat exchange area and thereby increasing the heat exchange effect.

[0381] According to some embodiments of this application, the total number of the first heat exchange section 111 and the second heat exchange section 121 of the first heat exchange channel 10 is greater than or equal to 4.

[0382] The total number of the first heat exchange section 111 and the second heat exchange section 121 in the first heat exchange channel 10 can be 4, 5, 6, 7 or more.

[0383] In the above embodiment, by setting the total number of first heat exchange sections 111 and second heat exchange sections 121 of the first heat exchange channel 10 to be greater than or equal to 4, the length of each heat exchange channel can be increased, the total number of heat exchange channels can be reduced, and the sealing performance of the heat exchange component 100 can be improved.

[0384] According to some embodiments of this application, such as Figure 3 and Figure 10As shown, there are two first heat exchange channels 10. Each first heat exchange channel 10 includes: three first heat exchange sections 111, one second heat exchange section 121, one third heat exchange section 122, one fourth heat exchange section 125, and one third heat exchange segment 13. There are four battery cells 201. The battery cells 201 located at the end in the fifth direction are in contact with one first heat exchange section 111 and one second heat exchange section 121 to exchange heat. The remaining battery cells 201 are not in contact with any of the other battery cells 201. 01 is attached to both first heat exchange sections 111 to enable heat exchange. The third heat exchange section 122 is connected to the second heat exchange section 121 and the first heat exchange section 111 that is furthest from the second heat exchange section 121, and is attached to the second group of battery cells 203 to enable heat exchange. The third heat exchange section 13 is connected to the first heat exchange section 111 that is closest to the second heat exchange section 121. The third heat exchange section 13 and / or the fourth heat exchange section 125 are attached to the third group of battery cells 204 to enable heat exchange.

[0385] For the four battery cells 201, since the periphery of the battery assembly 200 dissipates more heat, the temperature of the two first group battery cells 202 located at both ends in the fifth direction is lower than the temperature of the two battery cells 201 in the middle; the temperature of the second group battery cells 203 and the third group battery cells 204 located at both ends in the third direction is lower than the temperature of the battery cells 2011 in other positions.

[0386] The battery cell 201 located at the end in the fifth direction is in contact with the first heat exchange section 111 and the second heat exchange section 121 closest to the second heat exchange section 121. Each of the remaining battery cells 201 is in contact with the other two first heat exchange sections 111. When cooling or heating the battery assembly 200, the temperature of the heat exchange fluid flowing in the second heat exchange section 121 is relatively high, close to the inlet temperature of the first heat exchange channel 10. The temperature of the first heat exchange section 111 closest to the second heat exchange section 121 is relatively low, close to the outlet temperature of the first heat exchange channel 10. The temperatures of the remaining two first heat exchange sections 111 are between these two temperatures, and the temperatures of the three first heat exchange sections 111 are not significantly different. Therefore, the average temperature of the second heat exchange section 121 and the first heat exchange section 111 closest to the second heat exchange section 121 is higher than the average temperature of the remaining two first heat exchange sections 111. Consequently, the average heat exchange temperature corresponding to the battery cell 201 located at the end in the fifth direction is relatively high, thus compensating for the temperature difference caused by heat dissipation.

[0387] In addition, the third heat exchange section 13 and / or the fourth heat exchange section 125 are bonded to the third group of battery cells 204 to exchange heat. It is possible that only the third heat exchange section 13 is bonded to the third group of battery cells 204 for heat exchange, or only the fourth heat exchange section 125 is bonded to the third group of battery cells 204 for heat exchange, or both the third heat exchange section 13 and the fourth heat exchange section 125 are bonded to the third group of battery cells 204 for heat exchange.

[0388] For example Figure 10 As shown, the fifth direction is the length direction of the battery cell 2011, i.e., the Y2 direction shown in the figure, and the third direction is the thickness direction of the battery cell 2011, i.e., the X2 direction shown in the figure. The multiple battery cells 2011 included in the four battery units 201 extend along the thickness direction of the battery cell 2011 and are arranged at intervals along the length direction of the battery cell 2011; the two first heat exchange channels 10 are symmetrically arranged in the Y2 direction and exchange heat with the two battery cells 201 respectively.

[0389] Taking the first heat exchange channel 10 arranged on the side away from the origin in the Y2 direction as an example, the first heat exchange channel 10 includes a second heat exchange section 121, three first heat exchange sections 111, a third heat exchange section 122, a fourth heat exchange section 125, and a third heat exchange segment 13. The second heat exchange section 121 and the first heat exchange sections 111a, 111b, and 111c extend along the thickness direction of the battery cell 2011 and are arranged sequentially from the side away from the origin in the Y2 direction to the side closer to the origin. The first heat exchange sections 111a, 111b, and 111c are connected sequentially, and the second heat exchange section 121 and the first heat exchange section 111a exchange heat with the first group of battery cells 202, while the first heat exchange sections 111b and 111c exchange heat with the battery cells 201 adjacent to the first group of battery cells 202. The third heat exchange section 122 extends along the battery cell 201. The first heat exchange section 121 extends along its length and connects to the first heat exchange section 111c at one end of the second heat exchange section 121 in the X2 direction near the origin of the coordinate system, for heat exchange with the second group of battery cells 203; the fourth heat exchange section 125 is connected to the end of the second heat exchange section 121 in the X2 direction away from the origin of the coordinate system and extends along the length of the battery cell 2011 to a position near the first heat exchange section 111c; the third heat exchange section 13 is connected to the end of the first heat exchange section 111a in the X1 direction away from the origin of the coordinate system and extends along the length of the battery cell 2011 to a position near the first heat exchange section 111c, and exchanges heat with the third group of battery cells 204.

[0390] In the above embodiment, by setting four battery cells 201 to match two first heat exchange channels 10, and each first heat exchange channel 10 includes three first heat exchange parts 111 and one second heat exchange part 121, each battery cell 201 can exchange heat with the two heat exchange parts. In this way, the temperature uniformity of each battery cell 201 can be improved, thereby improving the temperature uniformity of the entire battery 400.

[0391] According to some embodiments of this application, such as Figure 14As shown, there are two first heat exchange channels 10. Each first heat exchange channel 10 includes: five first heat exchange sections 111, one second heat exchange section 121, one third heat exchange section 122, one fourth heat exchange section 125, and one third heat exchange segment 13. There are six battery cells 201. The battery cells 201 located at the end in the fifth direction are in contact with one first heat exchange section 111 and one second heat exchange section 121 to exchange heat. The remaining battery cells 201 are not in contact with any of the other battery cells 201. 01 is attached to both first heat exchange sections 111 to enable heat exchange. The third heat exchange section 122 is connected to the second heat exchange section 121 and the first heat exchange section 111 that is furthest from the second heat exchange section 121, and is attached to the second group of battery cells 203 to enable heat exchange. The third heat exchange section 13 is connected to the first heat exchange section 111 that is closest to the second heat exchange section 121. The third heat exchange section 13 and / or the fourth heat exchange section 125 are attached to the third group of battery cells 204 to enable heat exchange.

[0392] For six battery cells 201 matched with two first heat exchange channels 10, each first heat exchange channel 10 needs to exchange heat with three battery cells 201, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, so that each battery cell 201 exchanges heat with two heat exchange parts.

[0393] The battery cell 201 located at the end in the fifth direction is in contact with the first heat exchange section 111 and the second heat exchange section 121 closest to the second heat exchange section 121. Each of the remaining battery cells 201 is in contact with the other two first heat exchange sections 111. When cooling or heating the battery assembly 200, the temperature of the heat exchange fluid flowing in the second heat exchange section 121 is relatively high, close to the inlet temperature of the first heat exchange channel 10. The temperature of the first heat exchange section 111 closest to the second heat exchange section 121 is relatively low, close to the outlet temperature of the first heat exchange channel 10. The temperatures of the remaining four first heat exchange sections 111 are between these two temperatures, and the temperatures of the five first heat exchange sections 111 are not significantly different. Therefore, the average temperature of the second heat exchange section 121 and the first heat exchange section 111 closest to the second heat exchange section 121 is higher than the average temperature of the remaining two first heat exchange sections 111. Consequently, the average heat exchange temperature corresponding to the battery cell 201 located at the end in the fifth direction is relatively high, thus compensating for the temperature difference caused by heat dissipation.

[0394] The third heat exchange section 13 and / or the fourth heat exchange section 125 are in contact with the third group of battery cells 204 to exchange heat. It is understood that only the third heat exchange section 13 can be in contact with the third group of battery cells 204 for heat exchange, only the fourth heat exchange section 125 can be in contact with the third group of battery cells 204 for heat exchange, or both the third heat exchange section 13 and the fourth heat exchange section 125 can be in contact with the third group of battery cells 204 for heat exchange.

[0395] For example Figure 14 As shown, the fifth direction is the length direction of the battery cell 2011, i.e., the Y2 direction shown in the figure, and the third direction is the thickness direction of the battery cell 2011, i.e., the X2 direction shown in the figure. The multiple battery cells 2011 included in the six battery units 201 extend along the thickness direction of the battery cell 2011 and are arranged at intervals along the length direction of the battery cell 2011; the two first heat exchange channels 10 are symmetrically arranged in the Y2 direction and exchange heat with the three battery cells 201 respectively.

[0396] Taking the first heat exchange channel 10 arranged on the side away from the origin of the coordinate in the Y2 direction as an example, the first heat exchange channel 10 includes a second heat exchange section 121, five first heat exchange sections 111, a third heat exchange section 122, a fourth heat exchange section 125 and a third heat exchange segment 13. The second heat exchange section 121 and the first heat exchange sections 111a, 111b, 111c, 111d, and 111e extend along the thickness direction of the battery cell 2011 and are arranged sequentially from the side away from the origin in the Y2 direction to the side closer to the origin. The first heat exchange sections 111a, 111b, 111c, 111d, and 111e are connected in sequence. The second heat exchange section 121 and the first heat exchange section 111a exchange heat with the first group of battery cells 202. The first heat exchange sections 111b and 111c exchange heat with the battery cells 201 adjacent to the first group of battery cells 202. The first heat exchange sections 111d and 111e exchange heat with the first group of battery cells 202. e exchanges heat with the battery cell 201 that is away from the first group of battery cells 202; the third heat exchange section 122 extends along the length direction of the battery cell 2011 and connects the end of the second heat exchange section 121 near the origin in the X2 direction and the first heat exchange section 111e, for exchanging heat with the second group of battery cells 203; the fourth heat exchange section 125 is connected to the end of the second heat exchange section 121 away from the origin in the X2 direction and extends along the length direction of the battery cell 2011 to a position near the first heat exchange section 111e; the third heat exchange section 13 is connected to the end of the first heat exchange section 111a away from the origin in the X2 direction and extends along the length direction of the battery cell 2011 to a position near the first heat exchange section 111e, and exchanges heat with the third group of battery cells 204.

[0397] In the above embodiment, by setting six battery cells 201 to match two first heat exchange channels 10, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, it can be ensured that each battery cell 201 can exchange heat with the two heat exchange parts, thereby ensuring the temperature uniformity of each battery cell 201.

[0398] According to some embodiments of this application, such as Figure 15 As shown, there are two first heat exchange channels 10. Each first heat exchange channel 10 includes: five first heat exchange sections 111, one second heat exchange section 121, one third heat exchange section 122, one fourth heat exchange section 125, and one third heat exchange segment 13. There are four battery cells 201. The battery cells 201 located at the end in the fifth direction are in contact with two first heat exchange sections 111 and one second heat exchange section 121 to exchange heat. The remaining battery cells 201 are not in contact with the first heat exchange sections 111 and one second heat exchange section 121. 01 is attached to three first heat exchange sections 111 to enable heat exchange. The third heat exchange section 122 is connected to the second heat exchange section 121 and the first heat exchange section 111 that is furthest from the second heat exchange section 121, and is attached to the second group of battery cells 203 to enable heat exchange. The third heat exchange section 13 is connected to the first heat exchange section 111 that is closest to the second heat exchange section 121. The third heat exchange section 13 and / or the fourth heat exchange section 125 are attached to the third group of battery cells 204 to enable heat exchange.

[0399] For four battery cells 201 matched with two first heat exchange channels 10, each first heat exchange channel 10 needs to exchange heat with two battery cells 201, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121. Thus, each battery cell 201 exchanges heat with three heat exchange parts.

[0400] The battery cell 201 located at the end in the fifth direction exchanges heat with the two first heat exchange sections 111 and the second heat exchange section 121 closest to the second heat exchange section 121. Any other battery cell 201 exchanges heat with the other three first heat exchange sections 111. When cooling or heating the battery assembly 200, the temperature of the heat exchange fluid flowing in the second heat exchange section 121 is relatively high, close to the inlet temperature of the first heat exchange channel 10. The temperature of the two first heat exchange sections 111 closest to the second heat exchange section 121 is relatively low, close to the outlet temperature of the first heat exchange channel 10. The temperature of the remaining three first heat exchange sections 111 is between these two temperatures, and the temperatures of the five first heat exchange sections 111 are not significantly different. Therefore, the average temperature of the second heat exchange section 121 and the two first heat exchange sections 111 closest to the second heat exchange section 121 is higher than the average temperature of the remaining two first heat exchange sections 111. Consequently, the average heat exchange temperature corresponding to the battery cell 201 located at the end in the fifth direction is relatively high, thus balancing the temperature difference caused by heat dissipation.

[0401] The third heat exchange section 13 and / or the fourth heat exchange section 125 are in contact with the third group of battery cells 204 to exchange heat. It is understood that only the third heat exchange section 13 can be in contact with the third group of battery cells 204 for heat exchange, only the fourth heat exchange section 125 can be in contact with the third group of battery cells 204 for heat exchange, or both the third heat exchange section 13 and the fourth heat exchange section 125 can be in contact with the third group of battery cells 204 for heat exchange.

[0402] Figure 15 As shown, the fifth direction is the length direction of the battery cell 2011, i.e., the Y2 direction shown in the figure, and the third direction is the thickness direction of the battery cell 2011, i.e., the X2 direction shown in the figure. The multiple battery cells 2011 included in the four battery units 201 extend along the thickness direction of the battery cell 2011 and are arranged at intervals along the length direction of the battery cell 2011; the two first heat exchange channels 10 are symmetrically arranged in the Y2 direction and exchange heat with the two battery cells 201 respectively.

[0403] Taking the first heat exchange channel 10 arranged on the side away from the origin of the coordinate in the Y2 direction as an example, the first heat exchange channel 10 includes a second heat exchange section 121, five first heat exchange sections 111, a third heat exchange section 122, a fourth heat exchange section 125 and a third heat exchange segment 13. The second heat exchange section 121 and the first heat exchange sections 111a, 111b, 111c, 111d, and 111e extend along the thickness direction of the battery cell 2011 and are arranged sequentially from the side away from the origin in the Y2 direction to the side closer to the origin. The first heat exchange sections 111a, 111b, 111c, 111d, and 111e are connected sequentially, and the second heat exchange section 121, the first heat exchange sections 111a and 111b exchange heat with the first group of battery cells 202. The first heat exchange sections 111c, 111d, and 111e are connected to the first group of battery cells 202. The adjacent battery cell 201 exchanges heat; the third heat exchange section 122 extends along the length direction of the battery cell 2011 and connects the end of the second heat exchange section 121 near the origin in the X2 direction and the first heat exchange section 111e, for exchanging heat with the second group of battery cells 203; the fourth heat exchange section 125 is connected to the end of the second heat exchange section 121 away from the origin in the X2 direction and extends along the length direction of the battery cell 2011 to a position near the first heat exchange section 111e; the third heat exchange section 13 is connected to the end of the first heat exchange section 111a away from the origin in the X2 direction and extends along the length direction of the battery cell 2011 to a position near the first heat exchange section 111e, and exchanges heat with the third group of battery cells 204.

[0404] In the above embodiment, by setting four battery cells 201 to match two first heat exchange channels 10, and each first heat exchange channel 10 includes five first heat exchange parts 111 and one second heat exchange part 121, each battery cell 201 can exchange heat with three heat exchange parts. This can further improve the temperature uniformity of each battery cell 201. At the same time, it can also increase the heat exchange area of ​​the heat exchange component 100 to each battery cell 201, thereby improving the heat exchange effect of the heat exchange component 100 and improving the temperature uniformity of the battery 400.

[0405] According to some embodiments of this application, the number of battery cells 201 is 2 to 8.

[0406] The number of battery cells 201 can be 2, 3, 4, 5, 6, 7 or 8.

[0407] In the above embodiments, by setting the number of battery cells 201 to 2 to 8, it is beneficial to the overall design of battery 400 and heat exchanger 100, reduce the production difficulty of heat exchanger 100 and battery 400, and at the same time, it can increase the applicability of battery 400 and improve the market competitiveness of battery 400.

[0408] This application provides an electrical device, including the battery described in the above embodiments.

[0409] The other components and operations of the housing, battery, and electrical device according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0410] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0411] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, wherein, include: The housing includes a frame (310) and a support plate (320). The support plate (320) is disposed on one side of the frame (310) and encloses an accommodating space with the frame (310). The support plate (320) includes a multi-layer structural plate (321), a buffer layer (322) disposed between adjacent structural plates (321), and a heat exchanger disposed on the side of the structural plate (321) adjacent to the accommodating space away from the frame (310). At least one structural plate (321) is connected to the frame (310). A battery assembly is disposed within the accommodating space. The battery assembly includes battery cells, each battery cell comprising a plurality of battery cells stacked along a third direction. A heat exchanger is disposed on one side of the battery assembly in a fourth direction and exchanges heat with the battery assembly. The third direction is arranged at an angle to the fourth direction.

2. The battery according to claim 1, wherein, The heat exchanger includes a first heat exchange channel (10), which includes a first heat exchange section (11) and a second heat exchange section (12). The second heat exchange section (12) is bent to form a U-shaped region (120), and the first heat exchange section (11) is bent and disposed in the U-shaped region (120) and bent and connected to the second heat exchange section (12).

3. The battery according to claim 2, wherein, The second heat exchange section (12) is located on the outermost side of the first heat exchange channel (10) in the circumferential direction; and / or, the first heat exchange section (11) and the second heat exchange section (12) are bent in the same plane.

4. The battery according to claim 2, wherein, The first heat exchange section (11) includes a plurality of first heat exchange parts (111), which are arranged at intervals and connected by bending in sequence; the plurality of first heat exchange parts (111) are arranged at intervals along a first direction, and each first heat exchange part (111) extends in a straight line along a second direction, with the first direction and the second direction forming an angle.

5. The battery according to any one of claims 2-4, wherein, The second heat exchange section (12) includes: a second heat exchange part (121), a third heat exchange part (122), and a fourth heat exchange part (125). The second heat exchange part (121) extends along the first side periphery of the first heat exchange section (11). The third heat exchange part (122) is connected between the second heat exchange part (121) and the first heat exchange section (11) and extends along the second side periphery of the first heat exchange section (11). The first end of the third heat exchange part (122) is connected to the second heat exchange part (121) at an angle, and the second end of the third heat exchange part (122) is connected to the first heat exchange section (11) at an angle. The fourth heat exchange part (125) communicates with the second heat exchange part (121), is connected to the second heat exchange part (121) at an angle, and extends along the third side periphery of the first heat exchange section (11).

6. The battery according to claim 5, wherein, The first heat exchange section (11) includes a plurality of first heat exchange parts (111), which are sequentially bent and connected in a first direction; wherein, The second heat exchange section (121) is located on one side of the plurality of first heat exchange sections (111) along the first direction, and the third heat exchange section (122) is located on one side of the plurality of first heat exchange sections (111) along the second direction, the first direction and the second direction being arranged at an angle; the first end of the third heat exchange section (122) is connected to one end of the second heat exchange section (121) along the second direction, and the second end of the third heat exchange section (122) is connected to the one of the plurality of first heat exchange sections (111) that is furthest from the second heat exchange section (121) along the first direction; the fourth heat exchange section (125) is located on the other side of the plurality of first heat exchange sections (111) along the second direction, one end of the fourth heat exchange section (125) is connected to the end of the second heat exchange section (121) away from the third heat exchange section (122), and the other end of the fourth heat exchange section (125) extends along the first direction in a direction away from the second heat exchange section (121); or, The second heat exchange section (121) is located on one side of the plurality of first heat exchange sections (111) along the second direction, and the third heat exchange section (122) is located on one side of the plurality of first heat exchange sections (111) along the first direction, with the first direction and the second direction arranged at an angle; the first end of the third heat exchange section (122) is connected to one end of the second heat exchange section (121) along the first direction, and the second end of the third heat exchange section (122) is connected to the one of the plurality of first heat exchange sections (111) that is closest to the third heat exchange section (122) along the first direction; the fourth heat exchange section (125) is located on the other side of the plurality of first heat exchange sections (111) along the first direction, and one end of the fourth heat exchange section (125) is connected to the end of the second heat exchange section (121) away from the third heat exchange section (122), and the other end of the fourth heat exchange section (125) extends along the second direction in a direction away from the second heat exchange section (121).

7. The battery according to claim 6, wherein, The third heat exchange section (122) and the fourth heat exchange section (125) extend along a first direction, and the first heat exchange section (111) and the second heat exchange section (121) both extend along a second direction; or, The first heat exchange section (111), the third heat exchange section (122) and the fourth heat exchange section (125) are all arranged to extend along the second direction, and the second heat exchange section (121) is arranged to extend along the first direction.

8. The battery according to claim 7, wherein, Both the third heat exchange section (122) and the fourth heat exchange section (125) extend along a first direction, and in the first direction, the length of the fourth heat exchange section (125) is less than or equal to the length of the third heat exchange section (122); or The first heat exchange section (111) and the third heat exchange section (122) extend along the second direction, the second heat exchange section (121) extends along the first direction, and in the second direction, the length of the third heat exchange section (122) is greater than or equal to the length of the first heat exchange section (111).

9. The battery according to claim 7, wherein, The fourth heat exchange section (125) extends along the first direction and extends to a position close to the one of the plurality of first heat exchange sections (111) that is furthest from the second heat exchange section (121).

10. The battery according to claim 5, wherein, The second heat exchange section (12) further includes a fifth heat exchange section, which extends along the fourth side periphery of the first heat exchange section (11) and closes at least a portion of the opening of the U-shaped region (120) formed by the second heat exchange section (121), the third heat exchange section (122) and the fourth heat exchange section (125).

11. The battery according to claim 10, wherein, The fifth heat exchange section is arranged opposite to the second heat exchange section (121). The fifth heat exchange section is connected between the second end of the third heat exchange section (122) and the first heat exchange section (11), and is connected at an angle to the third heat exchange section (122) and the first heat exchange section (11); or, one end of the fifth heat exchange section is connected to the end of the fourth heat exchange section (125) away from the second heat exchange section (121), and the fifth heat exchange section is connected at an angle to the fourth heat exchange section (125).

12. The battery according to claim 5, wherein, The first heat exchange channel (10) further includes a third heat exchange section (13), the first heat exchange section (11) is connected between the third heat exchange section (13) and the second heat exchange section (12), and the third heat exchange section (13) is connected to the first heat exchange section (11) at an angle.

13. The battery according to claim 12, wherein, The first heat exchange section (11) includes a plurality of first heat exchange parts (111), which are sequentially bent and connected in a first direction; The third heat exchange section (13) is arranged on the side of the first heat exchange section (11) away from the third heat exchange part (122), and the third heat exchange section (13) is connected to the one of the plurality of first heat exchange parts (111) that is closest to the second heat exchange part (121) along the first direction.

14. The battery according to claim 13, wherein, The third heat exchange section (13) extends along the first direction toward a direction away from the second heat exchange section (121), and the first heat exchange section (111) extends along the second direction, wherein the first direction and the second direction are arranged at an angle.

15. The battery according to claim 14, wherein, The third heat exchange section (13) extends along the first direction to a position that is closest to the one of the plurality of first heat exchange sections (111) that is furthest from the second heat exchange section (121).

16. The battery according to any one of claims 2-4, wherein, The first heat exchange section (11) is connected downstream of the second heat exchange section (12) in the direction of fluid flow; or, the heat exchanger is configured such that when heating the battery assembly, the first heat exchange section (11) is connected downstream of the second heat exchange section (12) in the direction of fluid flow; and when cooling the battery assembly of the battery, the first heat exchange section (11) is connected upstream of the second heat exchange section (12) in the direction of fluid flow.

17. The battery according to any one of claims 2-4, wherein, The housing has one or more heat exchange channels. When there are multiple heat exchange channels, the multiple heat exchange channels are arranged at intervals along the first direction or arranged around each other. At least one heat exchange channel is formed as the first heat exchange channel (10), and the multiple heat exchange channels are arranged in parallel.

18. The battery according to claim 17, wherein, Multiple heat exchange channels are arranged at intervals along a first direction, and the two heat exchange channels located at both ends of the first direction are both the first heat exchange channels (10); and the two first heat exchange channels (10) are arranged symmetrically about the center line of the box body along a second direction, wherein the second direction is set at an angle to the first direction.

19. The battery according to claim 17, wherein, The plurality of heat exchange channels are arranged symmetrically about the centerline of the housing along the second direction.

20. The battery according to claim 17, wherein, The plurality of heat exchange channels further include at least one second heat exchange channel (30), the second heat exchange channel (30) being disposed between two first heat exchange channels (10), wherein the structure of any second heat exchange channel (30) is the same as or different from the structure of the first heat exchange channel (10).

21. The battery according to claim 20, wherein, The second heat exchange channel (30) includes a plurality of fourth heat exchange sections (31), which are connected in sequence. The fourth heat exchange sections (31) extend along a second direction, and the plurality of fourth heat exchange sections (31) are arranged at intervals in the first direction.

22. The battery according to claim 17, wherein, The heat exchanger has multiple heat exchange channels, including a first heat exchange channel (10) and at least one fourth heat exchange channel. The fourth heat exchange channel is bent within the U-shaped region (120) of the first heat exchange channel (10), and the first heat exchange channel (10) and the fourth heat exchange channel are bent in the same plane. The bending structures of the first heat exchange channel (10) and the fourth heat exchange channel may be the same or different.

23. The battery according to claim 22, wherein, The fourth heat exchange channel includes a U-shaped region (120) with the same structure as the first heat exchange channel (10), and at least a portion of the first heat exchange section (11) of the first heat exchange channel (10) is located within the U-shaped region (120) of the fourth heat exchange channel.

24. The battery according to claim 22, wherein, The U-shaped region (120) of the first heat exchange channel (10) is located on the outermost circumferential side of the heat exchanger.

25. The battery according to claim 17, wherein, The housing includes at least one heat exchange tube. When there are multiple heat exchange tubes, the multiple heat exchange tubes are arranged at intervals along the first direction, and the inner side of each heat exchange tube defines a heat exchange flow channel.

26. The battery according to any one of claims 1-4, wherein, The buffer layer (322) is constructed with a porous structure.

27. The battery according to claim 26, wherein, The holes on the buffer layer (322) extend in the opposite direction to the adjacent structural plate (321).

28. The battery according to claim 26, wherein, The buffer layer (322) is constructed of plastic material or metal material; when the buffer layer (322) is constructed of plastic material, the buffer layer (322) is heat-fused to the structural plate (321); when the buffer layer (322) is constructed of metal material, the buffer layer (322) is brazed to the structural plate (321).

29. The battery according to any one of claims 1-4, wherein, The structural plate (321) includes: a first structural plate (3211) to an Nth structural plate (3212) arranged sequentially in the arrangement direction of the frame (310) and the support plate (320), where N≥2, and at least the first structural plate (3211) and the Nth structural plate (3212) are connected to the frame (310).

30. The battery according to claim 29, wherein, The frame (310) is provided with a connecting flange (311) on the side facing the support plate (320). The structural size of the buffer layer (322) is smaller than the structural size of the structural plate (321) to define the slot. The connecting flange (311) extends into the slot; or the connecting flange (311) overlaps the first structural plate (3211).

31. The battery according to claim 30, wherein, The minimum overlap between the structural plate (321) and the connecting flange (311) is 6 mm.

32. The battery according to claim 30 or 31, wherein, The structural dimensions of the first structural plate (3211) are smaller than those of the Nth structural plate (3212), and the first structural plate (3211) is connected to the connecting flange (311), while the Nth structural plate (3212) is connected to the end face of the frame (310); or, The structural dimensions of the first structural plate (3211) are equal to the structural dimensions of the Nth structural plate (3212), and both the first structural plate (3211) and the Nth structural plate (3212) are connected to the connecting flange (311).

33. An electrical appliance, wherein, include: The battery according to any one of claims 1-32.

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