Battery apparatus and electric apparatus

Abstract

A battery apparatus (100) and an electric apparatus (1000). The battery apparatus (100) comprises a case (101), battery cells (10), and a heat exchange assembly (102). The case (101) is provided with interfaces (1012); the battery cells (10) are arranged in the case (101); the heat exchange assembly (102) is configured to exchange heat with the battery cells (10); and the heat exchange assembly (102) comprises a plurality of heat exchange bodies (103), connecting members (30), and connectors (104). The plurality of heat exchange bodies (103) are in contact with the battery cells (10); the connecting members (30) connect the plurality of heat exchange bodies (103); the connectors (104) connect the interfaces (1012) and the heat exchange bodies (103), or connect the interfaces (1012) and the connecting members (30); and the connectors (104) are located on one side of the case (101).

Description

Battery devices and electrical appliances Technical Field

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

[0002] In the design and application of battery devices, temperature control of individual battery cells is crucial for ensuring battery performance, extending cell lifespan, and guaranteeing safety. Related technologies utilize heat exchange components to regulate the temperature of individual battery cells, ensuring they operate within a suitable temperature range.

[0003] However, the design and layout of heat exchange components are often not compact enough, resulting in the heat exchange components occupying a large space inside the battery device. This leads to low space utilization within the battery device, resulting in a lower energy density for the same volume of battery device. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device and an electrical device that can solve the problem of low space utilization in the battery device, resulting in low energy density of the battery device in the same volume.

[0005] In a first aspect, embodiments of this application provide a battery device, the battery device including a housing, battery cells, and a heat exchange assembly. The housing has an interface; the battery cells are disposed within the housing; the heat exchange assembly is configured to exchange heat with the battery cells; wherein, the heat exchange assembly includes multiple heat exchange bodies, connectors, and joints. The multiple heat exchange bodies are in contact with the battery cells; the connectors connect the multiple heat exchange bodies; the joints connect the interface and the heat exchange bodies, or connect the interface and the connectors; wherein, the joints are located on one side of the housing.

[0006] In the battery device of this application embodiment, since the connector connects the interface and the heat exchange body or the interface and the connector is located on one side of the housing, the connector of the interface and the heat exchange component are integrated in the same area. This reduces the overall space occupation of the heat exchange component and the interface, improves the space utilization rate inside the battery device, and allows the battery device to accommodate larger volume battery cells, thereby achieving higher energy density under the same volume conditions.

[0007] In some embodiments, the number of connectors is multiple, and the multiple connectors are located on the same side of the housing.

[0008] Thus, since multiple connectors are located on the same side of the housing, they occupy less space within the housing, which improves the space utilization of the battery device. This allows the battery device to accommodate larger battery cells, thereby achieving higher energy density within the same volume.

[0009] In some embodiments, the connector is located on one side of the length direction of the housing.

[0010] In practical use, one side of the casing along its length is close to other external devices of the battery pack. Therefore, placing the connector on one side of the casing along its length facilitates connection between the connector and other external devices of the battery pack.

[0011] In some embodiments, the heat exchange body includes a heat exchange element and a current collector. The heat exchange element has a medium flow channel inside. The heat exchange element is disposed between adjacent battery cells. The current collector is connected to at least one end of the heat exchange element and communicates with the medium flow channel. The two opposite sidewalls of the current collector are connected to the connecting member. Two adjacent current collectors are connected through the connecting member.

[0012] Since adjacent current collectors are connected by connectors, there is no need to set up corresponding liquid inlet devices, such as connectors, for each current collector. This improves the space utilization within the battery device, allowing the battery device to accommodate larger battery cells, thereby achieving higher energy density under the same volume conditions.

[0013] Furthermore, the heat exchanger located between adjacent battery cells can exchange heat between two battery cells simultaneously, which reduces the space occupied by the heat exchanger and thus improves the space utilization within the battery device. This allows the battery device to accommodate larger battery cells, thereby achieving higher energy density within the same volume.

[0014] In some embodiments, the connector includes a first connecting portion, a second connecting portion, and a third connecting portion, one end of the first connecting portion being connected to the interface, and the second connecting portion and the third connecting portion being connected to two connectors that connect two adjacent current collectors.

[0015] In this way, by setting the joint, the heat exchange medium can flow between the first connection and the interface, and between the second or third connection and the connecting piece. This type of joint setting makes the flow resistance of the heat exchange medium low and can avoid the backflow of the heat exchange medium, thus improving the heat exchange efficiency.

[0016] In some embodiments, the connector includes a first connecting portion, a second connecting portion, and a third connecting portion. One end of the first connecting portion is connected to the end of the current collector away from the heat exchanger, and the other end of the first connecting portion is connected to the interface. One end of the second connecting portion is connected to one of the two sidewalls opposite to the current collector, and the other end of the second connecting portion is connected to a connector located on one side of the current collector. One end of the third connecting portion is connected to the other of the two sidewalls opposite to the current collector, and the other end of the third connecting portion is connected to a connector located on the other side of the current collector.

[0017] In this way, by connecting the various parts of the connector to different parts of the current collector and connecting the connector, this split connector design can reduce the space occupied by the connector, thereby improving the space utilization rate inside the battery device, allowing the battery device to accommodate larger battery cells, thus achieving higher energy density under the same volume conditions.

[0018] In some embodiments, the number of connectors is two, one of which is a water inlet connector and the other is a water outlet connector, and the water inlet connector and the water outlet connector are disposed on the same manifold.

[0019] By placing the inlet and outlet connectors on the same current collector, the overall space occupied by the inlet and outlet connectors can be reduced, thereby improving the space utilization rate inside the battery device and allowing the battery device to accommodate larger battery cells, thus achieving higher energy density under the same volume conditions.

[0020] In some embodiments, the inlet connector and the outlet connector are spaced apart along a first direction.

[0021] Thus, by arranging the inlet and outlet connectors at intervals along the first direction, the space occupied by the inlet and outlet connectors in other directions is reduced, thereby reducing the overall space occupied by the inlet and outlet connectors.

[0022] In some embodiments, along the first direction, the central axis of the water inlet connector overlaps with the central axis of the water outlet connector.

[0023] Thus, in the first direction, the projections of the inlet and outlet connectors overlap, thereby further reducing the overall space occupied by the inlet and outlet connectors.

[0024] In some embodiments, the first connecting portion of the water inlet connector includes a first segment and a second segment, the first segment and the second segment are connected at an angle, and the first segment is connected to the collector; the first connecting portion of the water outlet connector includes a third segment and a fourth segment, the third segment and the fourth segment are connected at an angle, and the third segment is in communication with the collector; wherein, the first segment and the second segment are parallel to each other, and the third segment and the fourth segment are parallel to each other.

[0025] Thus, since the first and second segments, as well as the third and fourth segments of the connector, are parallel to each other, this layout helps to make more efficient use of space, thereby improving the space utilization rate of the battery device.

[0026] In some embodiments, the number of connectors is two, one of which is a water inlet connector and the other is a water outlet connector, and the water inlet connector and the water outlet connector are respectively disposed on two adjacent water collectors.

[0027] Thus, by placing the inlet and outlet connectors on two adjacent heat exchange components, the overall space occupied by the inlet and outlet connectors can be reduced. Furthermore, placing the connectors on different heat exchange components facilitates the layout of the inlet and outlet connectors, thereby improving their manufacturing and reducing manufacturing complexity.

[0028] In some embodiments, the current collector includes a first side and a second side connected to the first side, the surface area of ​​the second side is greater than the surface area of ​​the first side, the connector is connected to the second side, and the inlet connector and the outlet connector are both connected to the first side.

[0029] In this way, the connector is connected to the second side with a larger surface area, which facilitates the flow of a larger flow rate of heat exchange medium into the medium channel of the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger. Both the inlet and outlet water connectors are connected to the first side with a smaller surface area, which reduces the space occupied by the inlet and outlet water connectors on the heat exchanger, thereby improving the space utilization of the battery device.

[0030] In some embodiments, the connector includes a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe being disposed on the same side of the battery cell, both the first connecting pipe and the second connecting pipe communicating with the medium flow channel, the first connecting pipe communicating with the water inlet connector, and the second connecting pipe communicating with the water outlet connector, the first connecting pipe and the second connecting pipe being spaced apart along a first direction.

[0031] Thus, since the first and second connecting pipes are located on the same side of the battery cell and are spaced apart along the first direction, the connecting components occupy less space within the battery device. This improves the space utilization within the battery device, thereby increasing the energy density of the battery device with the same volume.

[0032] In some embodiments, the second connecting portion and the third connecting portion of the water inlet connector form a first main channel, the first main channel being connected to the first connecting pipe, and the collector having a first branch channel and a second branch channel, the first branch channel being connected to the first main channel and the medium channel, and the second branch channel being connected to the first main channel and the water inlet connector.

[0033] The second connecting part and the third connecting part of the water outlet connector form a second main channel, which is connected to the second connecting pipe. The collector also has a third branch channel and a fourth branch channel. The third branch channel is connected to the second main channel and the medium channel, and the fourth branch channel is connected to the second main channel and the water outlet connector.

[0034] In this way, the main channel can be used to transport the heat exchange medium, allowing it to flow through the connecting pipes to the area where each collector is located. Branch channels allow the heat exchange medium to flow into the medium channels of the heat exchanger. Connectors provide inlet and outlet functions for the heat exchange medium, enabling it to fill or drain from the main channel, ensuring the reliability of the heat exchange assembly.

[0035] In some embodiments, the medium flow channel includes a plurality of first chambers and a plurality of second chambers, and the current collector further includes a first current collector and a second current collector, wherein the first current collector connects the first branch channel and the first chamber, and the second current collector connects the third branch channel and the second chamber.

[0036] In this way, the collector can have a flow-diverting function, which can reduce the probability of vortex dead zones after the heat exchange medium flows into the medium channel, reduce local flow resistance, and thus help optimize the flow path of the heat exchange medium in the medium channel, ensuring that the heat exchange medium can flow evenly through each chamber and improve the uniformity of heat exchange.

[0037] In some embodiments, along the first direction, the central axis of the first connecting pipe overlaps with the central axis of the second connecting pipe.

[0038] Thus, in the first direction, the projections of the first connecting pipe and the second connecting pipe overlap, thereby further reducing the overall space occupied by the first connecting pipe and the second connecting pipe.

[0039] In some embodiments, the battery device further includes a connection structure, one end of which is connected to the first connection tube and the other end of which is connected to the second connection tube.

[0040] Thus, the connecting structure enhances the overall stability of the first and second connecting pipes, making them less prone to displacement or misalignment during use. Simultaneously, the connecting structure allows the first and second connecting pipes to form a single unit, eliminating the need for separate assembly and thereby improving assembly efficiency.

[0041] In some embodiments, the number of connection structures is multiple, and the multiple connection structures are spaced apart along a second direction, which intersects with the first direction.

[0042] In this way, multiple connection structures can further enhance the overall stability of the first and second connecting pipes. Furthermore, even if one of the connection structures fails, the first and second connecting pipes can still form a stable connection through the other connection structures.

[0043] In some embodiments, each of the connection structures is disposed between two adjacent current collectors.

[0044] By placing the connecting structure between the current collectors, the internal spatial layout of the battery device can be optimized, the space occupied by the connecting structure can be reduced, and the space utilization rate can be improved.

[0045] In some embodiments, the connection structure further includes a connecting rib, a first collar and a second collar, the first collar being sleeved on the first connecting pipe and the second collar being sleeved on the second connecting pipe, and the connecting rib connecting the first collar and the second collar.

[0046] Thus, by setting the first and second rings, the number of connection points between the connecting structure and the first and second connecting pipes increases, thereby improving the connection stability between the connecting structure and the first and second connecting pipes, making it less likely for connection failure to occur between the connecting structure and the first and second connecting pipes.

[0047] In some embodiments, the connecting rib includes a first portion and a second portion connected at an angle to the first portion, the first portion being connected to the first collar and the second portion being connected to the second collar.

[0048] Thus, since the first and second parts are connected at an angle, the connecting ribs can be applied to the first and second connecting pipes with different center distances, thereby improving the commonality of the connection structure.

[0049] In some embodiments, the connecting rib includes a first connecting segment, a second connecting segment, and a third connecting segment. The first connecting segment is connected to the first collar, the second connecting segment is connected to the second collar, and the third connecting segment is a ring structure with open ends. The first connecting segment and the second connecting segment are connected to opposite sides of the third connecting segment.

[0050] In this way, the third connecting segment of the ring structure can more evenly distribute the stress on the connecting ribs, reduce local stress concentration, and thus improve the overall stability of the connecting ribs, thereby improving the reliability of the connection between the first and second connecting pipes. At the same time, the third connecting segment can also absorb manufacturing tolerances, thereby reducing the probability of the first and second connecting pipes undergoing group deformation or skewing.

[0051] In some embodiments, the third connecting segment has a through hole, the extension direction of which is parallel to the length direction of the first connecting pipe.

[0052] In this way, the third connecting section can absorb the manufacturing tolerances of the first and second connecting pipes along the length direction of the first connecting pipe, thereby reducing the probability of the first and second connecting pipes deforming or skewing together.

[0053] In some embodiments, the third connecting segment has a through hole, the extension direction of which is perpendicular to the length direction of the first connecting pipe.

[0054] In this way, the third connecting section can absorb the manufacturing tolerances of the first and second connecting pipes along the length direction perpendicular to the first connecting pipe, thereby reducing the probability of the first and second connecting pipes deforming or skewing together.

[0055] In some embodiments, the axial dimension of the third connecting segment is greater than the axial dimension of the first collar.

[0056] In this way, the third connecting section can swing along the extension direction of the via, thereby absorbing the manufacturing tolerances of the first and second connecting pipes along the extension direction of the via, thus reducing the probability of the first and second connecting pipes deforming or skewing together.

[0057] In some embodiments, the axial dimension of the third connecting segment is less than or equal to the axial dimension of the first collar.

[0058] In this way, the third connecting section can swing radially along the through hole, thereby absorbing the manufacturing tolerances of the first and second connecting pipes radially along the through hole, thus reducing the probability of the first and second connecting pipes deforming or skewing together.

[0059] In some embodiments, the battery device includes multiple rows of battery cells arranged along a third direction, and the heat exchange body extends along the third direction and is connected to a first wall of each battery cell, the first wall being the wall with the largest surface area among the battery cells.

[0060] Thus, since the heat exchanger is connected to the first wall with the largest surface area in the battery cell, the heat exchanger can more effectively regulate the temperature of the battery cell.

[0061] In some embodiments, the battery cell includes two second walls disposed opposite each other in the third direction, wherein the second walls of two adjacent battery cells are aligned in the third direction.

[0062] In this way, the individual battery cells can be arranged closely together, and this layout can make more efficient use of the space inside the battery device, thereby improving the space utilization rate of the battery device.

[0063] In some embodiments, the heat exchange body and the battery cell are alternately arranged in a second direction, which intersects with the third direction.

[0064] In this way, multiple rows of battery cells and multiple heat exchange bodies are interconnected to form a whole and housed in the box. This not only enables effective thermal management of each row of battery cells, but also ensures the overall structural strength of the battery device, thereby improving the performance of the battery device.

[0065] In some embodiments, the heat exchange body is bonded to the first wall.

[0066] Thus, the adhesive connection provides a robust fixing method, enhancing the structural stability between the heat exchanger body and the first wall of the battery cell, and reducing displacement or damage caused by vibration or impact during battery device operation. This allows the heat exchanger body to remain in continuous contact with the first wall to continuously regulate the temperature of the battery cell.

[0067] In some embodiments, the bottom wall of the housing is connected to the battery cell, the side wall of the housing is spaced apart from the battery cell, and the minimum distance between the side wall of the housing and the battery cell ranges from 5mm to 35mm.

[0068] Because the heat exchange components occupy less space within the housing, the individual battery cells can be made larger. Within the aforementioned numerical range, the individual battery cells are less prone to friction with the side walls of the housing and can also have a larger volume, thereby achieving higher energy density.

[0069] Secondly, embodiments of this application provide an electrical device that includes a battery device as described in any of the above embodiments, the battery device being used to provide electrical energy.

[0070] Since the electrical device includes the battery device described above, it includes at least all the beneficial effects of the battery device described above, which will not be repeated here.

[0071] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0072] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0073] Figure 1 is a schematic diagram of the structure of an electrical device provided in some embodiments of this application;

[0074] Figure 2 is an exploded schematic diagram of a battery device provided in some embodiments of this application;

[0075] Figure 3 is a partial structural schematic diagram of a battery device provided in some embodiments of this application;

[0076] Figure 4 is an enlarged schematic diagram of part a of the battery device in Figure 3;

[0077] Figure 5 is a partial structural schematic diagram of a battery device provided in some other embodiments of this application;

[0078] Figure 6 is a partial structural schematic diagram of a battery device provided in some embodiments of this application;

[0079] Figure 7 is an enlarged schematic diagram of part b of the battery device in Figure 6;

[0080] Figure 8 is a schematic diagram of the assembly structure of the heat exchanger body and the connector provided in some embodiments of this application;

[0081] Figure 9 is a schematic diagram of the assembly structure of the heat exchanger body and the connector provided in some other embodiments of this application;

[0082] Figure 10 is a cross-sectional view of the assembly structure in Figure 9 along the AA direction;

[0083] Figure 11 is a schematic diagram of the assembly structure of the heat exchanger body and the connector provided in some embodiments of this application;

[0084] Figure 12 is an enlarged schematic diagram of part c of the assembly structure in Figure 11;

[0085] Figure 13 is a schematic diagram of the assembly structure of the heat exchanger body and the connector provided in some embodiments of this application;

[0086] Figure 14 is a partial structural schematic diagram of a battery device provided in some embodiments of this application;

[0087] Figure 15 is a schematic diagram of the connection structure, the first connecting pipe and the second connecting pipe assembly structure provided in some embodiments of this application;

[0088] Figure 16 is a schematic diagram of the connection structure, the first connecting pipe and the assembly structure of the second connecting pipe provided in some other embodiments of this application;

[0089] Figure 17 is a schematic diagram of the connection structure, the first connecting pipe and the second connecting pipe assembly structure provided in some embodiments of this application;

[0090] Figure 18 is a schematic diagram of the assembly structure in Figure 15 from another perspective;

[0091] Figure 19 is a schematic diagram of the assembly structure in Figure 16 from another perspective;

[0092] Figure 20 is a schematic diagram of the assembly structure in Figure 17 from another perspective;

[0093] Figure 21 is a schematic diagram of the connection structure, the first connecting pipe and the assembly structure of the second connecting pipe provided in some embodiments of this application;

[0094] Figure 22 is a schematic diagram of the assembly structure in Figure 21 from another perspective;

[0095] Figure 23 is a partial structural schematic diagram of a battery device provided in some embodiments of this application.

[0096] Reference numerals: Battery device 100; Housing 101; Interface 1012; Battery cell 10; Heat exchange assembly 102; Heat exchange body 103; Connector 30; Connector 104; Heat exchange component 105; Current collector 20; Medium flow channel 21; First connection 106; Second connection 107; Third connection 108; Water inlet connector 40; Water outlet connector 50; First section 41; Second section 42; Third section 51; Fourth section 52; First side 22; Second side 23; First connecting pipe 31; Second connecting pipe 32; First main flow channel 310; First branch channel 24; Second branch channel 25; Second branch channel 26; Second branch channel 27; Third branch channel 28; Third branch channel 29; Third branch channel 20 ... Flow channel 25; second main flow channel 320; third branch flow channel 26; fourth branch flow channel 27; first chamber 210; second chamber 211; first collector 28; second collector 29; connecting structure 60; connecting rib 61; first collar 62; second collar 63; first part 610; second part 611; first connecting section 612; second connecting section 613; third connecting section 614; through hole 6140; first wall 11; second wall 12; electrical device 1000; controller 200; motor 300; first housing 1010; second housing 1011. Detailed Implementation

[0097] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0098] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0099] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0100] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0101] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0102] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0103] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0104] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0105] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0106] In the design and application of battery devices, temperature control of individual battery cells is crucial for ensuring battery performance, extending battery life, and guaranteeing safety. To effectively cool the individual battery cells inside the battery device, heat exchange components are typically integrated. These heat exchange components can include multiple heat exchange bodies, which can exchange heat with the outer surfaces of multiple battery cells.

[0107] In order to continuously regulate the temperature of the battery cells, a heat exchange medium needs to be introduced into the heat exchanger body to achieve the circulation of the heat exchange medium, thereby improving the temperature regulation effect.

[0108] The enclosure is equipped with interfaces to meet the supply requirements of the heat exchange medium. To deliver the heat exchange medium input through the interfaces to multiple heat exchange units, a collector can be installed at the interface, and multiple inlet pipes can be used to connect the collector and the heat exchange units, as well as multiple outlet pipes. However, arranging these inlet and outlet pipes inside the battery device occupies a significant amount of space, resulting in low space utilization within the battery device and consequently, a lower energy density for the same volume of battery.

[0109] Based on the above considerations, this application provides a battery device. In this battery device, the connector is configured to connect the interface and the heat exchange body, or connect the interface and the connector. Furthermore, the connector is located on one side of the housing, thus integrating the interface and the connector of the heat exchange component in the same area. This reduces the overall space occupied by the heat exchange component and the interface, improves the space utilization within the battery device, and allows the battery device to accommodate larger battery cells, thereby achieving higher energy density within the same volume.

[0110] Please refer to Figure 1, which is a schematic diagram of the structure of an electrical device 1000 provided in some embodiments of this application. The technical solutions described in the embodiments of this application are applicable to various electrical devices 1000 that use battery devices 100, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0111] For ease of explanation, the following embodiments use a vehicle as an example of an electrical device 1000 according to an embodiment of this application.

[0112] The vehicle has a battery device 100 installed inside, which can be located at the bottom, front, or rear of the vehicle. The battery device 100 can be used to power the vehicle; for example, it can serve as the vehicle's operating power source.

[0113] The vehicle may also include a controller 200 and a motor 300, the controller 200 being used to control the battery device 100 to supply power to the motor 300, for example, for the power needs of the vehicle during starting, navigation and driving.

[0114] In this embodiment of the application, the battery device 100 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.

[0115] Please refer to Figure 2, which is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 10, which are connected in series, parallel, or mixed connection via a busbar.

[0116] In this embodiment of the application, the battery cell 10 can be a secondary battery, which refers to the battery cell 10 that can be used again after being discharged by recharging to activate the active material.

[0117] The battery cell 10 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 the embodiments of this application are not limited to this.

[0118] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 10.

[0119] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 10 together to form an independent module. As an example, a battery module can be formed by bundling multiple battery cells 10 together with cable ties.

[0120] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 101 and one or more individual battery cells housed within the housing 101.

[0121] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 101 by fixing the battery module in the housing 101.

[0122] As an example, the battery cell assembly can also be housed in the housing 101 by directly fixing multiple battery cells 10 to the housing 101.

[0123] As an example, the housing 101 may include a first housing 1010 and a second housing 1011. The first housing 1010 and the second housing 1011 are fastened together to form a closed space inside the housing 101 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 1010 may be a top cover or a bottom plate.

[0124] As an example, the housing 101 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 101 forms an enclosed space to accommodate the battery cell assembly.

[0125] In some embodiments, the housing 101 may be part of the vehicle's chassis structure. For example, a portion of the housing 101 may be at least a portion of the vehicle's floor, or a portion of the housing 101 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0126] In some embodiments, the battery device 100 may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0127] Please refer to Figures 3 to 7. Figure 3 is a partial structural schematic diagram of the battery device 100 provided in some embodiments of this application; Figure 4 is an enlarged schematic diagram of part a of the battery device 100 in Figure 3; Figure 5 is a partial structural schematic diagram of the battery device 100 provided in other embodiments of this application; Figure 6 is a partial structural schematic diagram of the battery device 100 provided in yet another embodiment of this application; Figure 7 is an enlarged schematic diagram of part b of the battery device 100 in Figure 6. This application provides a battery device 100, which includes a housing 101, a battery cell 10, and a heat exchange assembly 102. The housing 101 has an interface 1012; the battery cell 10 is disposed within the housing 101; the heat exchange assembly 102 is configured to exchange heat with the battery cell 10; wherein the heat exchange assembly 102 includes a plurality of heat exchange bodies 103, connectors 30, and joints 104. Multiple heat exchange bodies 103 are in contact with battery cells 10; connectors 30 connect multiple heat exchange bodies 103; connectors 104 connect interfaces 1012 and heat exchange bodies 103, or connect interfaces 1012 and connectors 30; wherein, connectors 104 are located on one side of housing 101.

[0128] Specifically, the number of interfaces 1012 can be one or more. Interfaces 1012 can be located on the side wall of the enclosure 101.

[0129] The number of battery cells 10 can be two, three, four, or even more. Multiple battery cells 10 can be connected to each other or spaced apart from each other.

[0130] The heat exchange assembly 102 is a component used to regulate the temperature of the battery cell 10, ensuring that the battery cell 10 operates within its optimal operating temperature range.

[0131] The heat exchanger body 103 can be a part of the heat exchange assembly 102 that provides the heat exchange function. The number of heat exchanger bodies 103 can be two, three, four or even more.

[0132] One or a row of battery cells 10 can be arranged between two adjacent heat exchange bodies 103, in which case the two heat exchange bodies 103 simultaneously exchange heat with one or a row of battery cells 10. Alternatively, two or two rows of battery cells 10 can be arranged between two adjacent heat exchange bodies 103, in which case the two heat exchange bodies 103 can exchange heat with one or a row of battery cells 10 respectively.

[0133] The heat exchanger body 103 can be made of a high thermal conductivity material, such as aluminum or copper, to improve heat exchange efficiency. A heat exchange medium can be filled inside the heat exchanger body 103, and heat exchange occurs between the heat exchanger body 103 and the battery cell 10 through the heat exchange medium's interaction with the body's walls. The heat exchange medium can be water, a mixture of water and ethylene glycol, a refrigerant, or air, etc. The heat exchange medium can be circulated for better temperature regulation.

[0134] Heat exchange refers to heating or cooling the battery cell 10. When cooling the battery cell 10, the heat exchange body 103 can contain a cooling medium to regulate the temperature of the battery cell 10. In this case, the heat exchange body 103 can also be called a cooling component or cooling plate, etc. The cooling medium can be a coolant or a cooling gas. Alternatively, the heat exchange body 103 can also be used for heating; this is not limited to this application embodiment.

[0135] The heat exchanger body 103 can be circulated with a heat exchange medium through the connector 30 or the joint 104 to achieve heat exchange medium circulation and thus improve the heat exchange effect. "Contact between the heat exchanger body 103 and the battery cell 10" refers to the existence of direct or indirect physical contact between the heat exchanger body 103 and the battery cell 10 to achieve heat exchange. Specifically, through contact with the battery cell 10, the heat exchanger body 103 transfers the heat generated by the battery cell 10 to the heat exchange medium (such as coolant or air) within the heat exchanger body 103, thereby achieving temperature regulation of the battery cell 10.

[0136] Heat exchange between the heat exchanger body 103 and the battery cell 10 can be achieved through direct contact. For example, the outer surface of the heat exchanger body 103 can be attached to the outer surface of the battery cell 10. Alternatively, the heat exchanger body 103 and the battery cell 10 can be indirectly contacted through a thermally conductive layer. For example, a thin thermally conductive layer (such as thermally conductive adhesive or a thermally conductive pad) can be used to achieve contact between the heat exchanger body and the battery cell to improve heat exchange efficiency.

[0137] The connector 30 can be a round tube, a square tube, or a tube of other shapes. The connector 30 and the heat exchange body 103 can be connected by welding, bonding, or other methods, or the connector 30 and the heat exchange body 103 can be integrally formed.

[0138] Connector 104 is a component used to connect pipelines. Connector 104 can be a pipe connector, flange connector, etc. One end of connector 104 can be connected to interface 1012. Connector 104 can be connected to interface 1012 by means of flange connection, welding, etc. For example, the outer surface of connector 104 can be provided with external threads, and the inner surface of interface 1012 can be provided with internal threads. Connector 104 and interface 1012 can be screwed together by external and internal threads. Connector 104 can be inserted into interface 1012 to facilitate connection with equipment outside battery device 100.

[0139] The other end of the connector 104 can be connected to the heat exchange body 103 or the connector 30. In one embodiment, the connector 104 can be installed on the heat exchange body 103 by means of a flange or quick-connect pipe to improve the efficiency of the connector 104's assembly and disassembly. In another embodiment, the connector 104 can be installed on the connector 30 by welding or sleeve connection.

[0140] The connector 104 allows the heat exchange medium to flow into or out of the heat exchange body 103. The heat exchange medium outside the heat exchange assembly 102 can be input to the connector 104 through the interface 1012, and further input to the heat exchange body 103 or the connector 30. The heat exchange medium inside the heat exchange assembly 102 can be directly output from the heat exchange body 103 to the interface 1012 through the connector 104, or it can be input from the heat exchange body 103 to the connector 104 through the connector 30, and then output to the interface 1012 through the connector 104. Therefore, by setting the connector 104, the circulation of the heat exchange medium can be achieved, thereby improving the heat exchange effect of the heat exchange body 103.

[0141] The connector 104 being located on one side of the enclosure 101 means that the connector 104 is located close to the side wall of the enclosure 101. The connector 104 may be located adjacent to the interface 1012 located on the side wall of the enclosure 101.

[0142] Since the connector 104 connects the interface 1012 and the heat exchange body 103 or connects the interface 1012 and the connector 30, and the connector 104 is located on one side of the housing 101, the interface 1012 and the connector 104 of the heat exchange assembly 102 are integrated in the same area. This reduces the overall space occupied by the heat exchange assembly 102 and the interface 1012, improves the space utilization rate inside the battery device 100, and allows the battery device 100 to accommodate larger volume battery cells 10, thereby achieving higher energy density under the same volume conditions.

[0143] Referring to Figures 5 and 7, in some embodiments, there are multiple connectors 104, and the multiple connectors 104 are located on the same side of the housing 101.

[0144] Specifically, the number of joints 104 can be two, three, four, or even more. For example, there are two joints 104, one of which is used to allow the heat exchange medium to flow into the heat exchange body 103, and the other joint 104 is used to allow the heat exchange medium to flow out of the heat exchange body 103.

[0145] Thus, since the multiple connectors 104 are located on the same side of the housing 101, the space occupied by the multiple connectors 104 in the housing 101 is small. This can improve the space utilization rate inside the battery device 100, so that the battery device 100 can accommodate larger volume battery cells 10, thereby achieving higher energy density under the same volume conditions.

[0146] Referring to Figures 3 and 4, in some embodiments, the connector 104 is located on one side of the length direction of the housing 101.

[0147] In actual use, one side of the casing 101 along its length is close to other devices outside the battery device 100. Therefore, the connector 104 is located on one side of the casing 101 along its length to facilitate the connection of the connector 104 to other devices outside the battery device 100.

[0148] Please refer to Figures 8, 9, and 10. Figure 8 is a schematic diagram of the assembly structure of the heat exchange body 103 and the connector 104 provided in some embodiments of this application; Figure 9 is a schematic diagram of the assembly structure of the heat exchange body 103 and the connector 104 provided in other embodiments of this application; Figure 10 is a cross-sectional view of the assembly structure in Figure 9 along the AA direction. In some embodiments, the heat exchange body 103 includes a heat exchange element 105 and a current collector 20. The heat exchange element 105 has a medium flow channel 21 inside. The heat exchange element 105 is disposed between adjacent battery cells 10. The current collector 20 is connected to at least one end of the heat exchange element 105 and communicates with the medium flow channel 21. Two opposite sidewalls of the current collector 20 are connected to connectors 30. Two adjacent current collectors 20 are connected by connectors 30.

[0149] Specifically, the outer wall of the heat exchanger 105 can contact the outer wall of the battery cell 10. In use, the medium flow channel 21 inside the heat exchanger 105 has a heat exchange medium, which can exchange heat with the outer wall of the heat exchanger 105, thereby enabling heat exchange between the heat exchanger 105 and the battery cell 10.

[0150] The medium flow channel 21 is a passageway inside the heat exchanger 105 for the flow of the heat exchange medium. The medium flow channel 21 ensures that the heat exchange medium is evenly distributed throughout the heat exchanger 105, improving heat exchange efficiency. The medium flow channel 21 can be straight, serpentine, or other complex flow channel structures; the specific shape is determined according to the actual application requirements. The size and shape of the medium flow channel 21 should ensure smooth flow of the heat exchange medium, avoiding blockage and excessive flow resistance.

[0151] The heat exchanger 105 may have one or more medium flow channels 21. For example, each heat exchanger 105 may have one medium flow channel 21. Alternatively, each heat exchanger 105 may have two medium flow channels 21, which may be independent or interconnected. The shape of the heat exchanger 105 may be adapted to the shape of the battery cell 10. For example, the heat exchanger 105 may be rectangular to facilitate contact between the rectangular battery cell 10 and the heat exchanger 105.

[0152] The collector 20 is a component connected to the heat exchanger 105, used to collect and distribute the heat exchange medium. The collector 20 connects to at least one end of the heat exchanger 105, ensuring that the heat exchange medium can enter and exit the heat exchanger 105 uniformly, thereby improving heat exchange efficiency. The collector 20 can be a box-shaped, plate-shaped, or other shape, the specific shape determined according to actual application requirements. The interior of the collector 20 can be designed with flow guiding structures to optimize the flow path of the heat exchange medium.

[0153] The connection between the collector 20 and the heat exchanger 105 can be achieved through welding, bonding, or other methods. The collector 20 may have a flow channel communicating with the medium channel, allowing the heat exchange medium to flow between the heat exchanger 105 and the collector 20. The connection between the collector 20 and the connector 30 can also be achieved through welding, bonding, or other methods. For example, through holes may be provided in opposite areas of two adjacent collectors 20, and the connector 30 may be bonded to the periphery of the through holes, allowing the two adjacent collectors 20 to be connected via the connector 30.

[0154] Since two adjacent current collectors are connected by connectors 30, there is no need to set a corresponding liquid inlet device, such as connector 104, for each current collector 20. This improves the space utilization within the battery device 100, allowing the battery device 100 to accommodate larger battery cells 10, thereby achieving higher energy density under the same volume conditions.

[0155] Furthermore, the heat exchanger 105 disposed between adjacent battery cells 10 can exchange heat between two battery cells 10 simultaneously, which reduces the space occupied by the heat exchanger 105 and thus improves the space utilization within the battery device 100, allowing the battery device 100 to accommodate larger volume battery cells 10, thereby achieving higher energy density under the same volume conditions.

[0156] Please refer to Figure 11, which is a schematic diagram of the assembly structure of the heat exchanger body 103 and the connector 104 provided in some embodiments of this application; Figure 12 is an enlarged schematic diagram of part c of the assembly structure of Figure 11. In some embodiments, the connector 104 includes a first connecting part 106, a second connecting part 107, and a third connecting part 108. One end of the first connecting part 106 is connected to an interface 1012, and the second connecting part 107 and the third connecting part 108 are connected to two connecting members 30 that connect two adjacent current collectors 20.

[0157] Specifically, connector 104 can be a tee connector. The first connecting part 106, the second connecting part 107, and the third connecting part 108 can be three parts of the tee connector.

[0158] In one embodiment, the heat exchange medium can enter the connector 104 from the interface 1012 through the first connection 106, and then be distributed to the second connection 107 and the third connection 108, and flow from the second connection 107 and the third connection 108 to the connectors 30 located on both sides of the connector 104, and then be distributed to the collector 20.

[0159] In one embodiment, the heat exchange medium can also flow from the second connection 107 and the third connection 108 to the first connection 106 and out through the interface 1012.

[0160] The first connecting part 106, the second connecting part 107 and the third connecting part 108 can all be pipe connection port 1012, flange connection port 1012 or other types of connection points.

[0161] Thus, by setting the connector 104, the heat exchange medium can flow between the first connection 106 and the interface 1012, and can flow between the second connection 107 or the third connection 108 and the connector 30. This configuration of the connector 104 results in lower flow resistance of the heat exchange medium during flow and can prevent backflow of the heat exchange medium, thereby improving heat exchange efficiency.

[0162] Please refer to Figures 7 and 8. In some embodiments, the connector 104 includes a first connecting portion 106, a second connecting portion 107, and a third connecting portion 108. One end of the first connecting portion 106 is connected to the end of the collector 20 away from the heat exchanger 105, and the other end of the first connecting portion 106 is connected to the interface 1012. One end of the second connecting portion 107 is connected to one of the two sidewalls opposite to the collector 20, and the other end of the second connecting portion 107 is connected to the connector 30 located on one side of the collector 20. One end of the third connecting portion 108 is connected to the other sidewall of the two sidewalls opposite to the collector 20, and the other end of the third connecting portion 108 is connected to the connector 30 located on the other side of the collector 20.

[0163] Specifically, the first connecting portion 106 is used to connect the interface 1012 and the current collector 20. The second connecting portion 107 and the third connecting portion 108 are used to connect the current collector 20 and different connecting parts 30. Through the first connecting portion 106, the heat exchange medium enters the connector 104 from the outside. Through the second connecting portion 107, the heat exchange medium enters the current collector 20 from the connector 104, and is then distributed to each heat exchange part 105 to exchange heat with the battery cell 10.

[0164] In one embodiment, the heat exchange medium can enter the collector 20 from the interface 1012 through the first connection 106, and then be distributed to the second connection 107 and the third connection 108, and flow from the second connection 107 and the third connection 108 to the connectors 30 located on both sides of the collector 20.

[0165] In one embodiment, the heat exchange medium can also flow from the second connection 107 and the third connection 108 into the collector 20, flow out of the collector 20 through the first connection 106, and then flow out through the interface 1012.

[0166] Thus, by connecting the various parts of the connector 104 to different parts of the current collector 20 and connecting the connector 30, this split connector 104 design can reduce the space occupied by the connector 104, thereby improving the space utilization rate inside the battery device 100, so that the battery device 100 can accommodate a larger volume battery cell 10, thereby achieving a higher energy density under the same volume conditions.

[0167] Referring to Figure 8, in some embodiments, there are two connectors 104, one of which is a water inlet connector 40 and the other is a water outlet connector 50. The water inlet connector 40 and the water outlet connector 50 are disposed on the same collector 20.

[0168] Specifically, the heat exchange medium can flow into the collector 20 through the inlet connector 40 and flow out of the collector 20 through the outlet connector 50.

[0169] By placing the inlet connector 40 and the outlet connector 50 on the same current collector 20, the overall space occupied by the inlet connector 40 and the outlet connector 50 can be reduced, thereby improving the space utilization rate inside the battery device 100 and allowing the battery device 100 to accommodate larger battery cells 10, thus achieving higher energy density under the same volume conditions.

[0170] Referring to Figure 8, in some embodiments, the inlet connector 40 and the outlet connector 50 are spaced apart along the first direction z.

[0171] Specifically, the first direction z can be parallel to the extension direction of the side of the current collector 20 near the connector 104, or it can intersect with the extension direction of the side of the current collector 20 near the connector 104.

[0172] Thus, by arranging the inlet connector 40 and the outlet connector 50 at intervals along the first direction z, the space occupied by the inlet connector 40 and the outlet connector 50 in other directions is reduced, thereby reducing the overall space occupied by the inlet connector 40 and the outlet connector 50.

[0173] Referring to Figures 9 and 10, in some embodiments, the central axis of the inlet connector 40 and the central axis of the outlet connector 50 overlap along the first direction z.

[0174] Specifically, when the inlet connector 40 and the outlet connector 50 have the same shape and size, their projections in the first direction z can completely overlap. When the inlet connector 40 and the outlet connector 50 have different shapes and sizes, their projections in the first direction z have an overlapping area.

[0175] For a cuboid-shaped current collector 20, the first direction z can be the extension direction of the side corresponding to the long or short side of the current collector 20.

[0176] Thus, in the first direction z, the projections of the inlet connector 40 and the outlet connector 50 overlap, thereby further reducing the overall space occupied by the inlet connector 40 and the outlet connector 50.

[0177] Please refer to Figures 5 and 13. Figure 13 is a schematic diagram of the assembly structure of the heat exchanger body 103 and the connector 104 provided in some embodiments of this application. In some embodiments, the first connecting portion 106 of the water inlet connector 40 includes a first segment 41 and a second segment 42, which are connected at an angle, and the first segment 41 is connected to the collector 20; the first connecting portion 106 of the water outlet connector 50 includes a third segment 51 and a fourth segment 52, which are connected at an angle, and the third segment 51 is in communication with the collector 20; wherein, the first segment 41 and the second segment 42 are parallel to each other, and the third segment 51 and the fourth segment 52 are parallel to each other.

[0178] Specifically, the angle between the first segment 41 and the second segment 42 can be set according to requirements. For example, the angle between the first segment 41 and the second segment 42 can be a right angle, in which case the water inlet connector 40 is "L" shaped. The angle between the third segment 51 and the fourth segment 52 can also be set according to requirements. For example, the angle between the third segment 51 and the fourth segment 52 can be a right angle, in which case the water outlet connector 50 is "L" shaped. The "L" shaped water inlet connector 40 and water outlet connector 50 can be adapted to connection requirements along the first direction z.

[0179] To avoid interference between the inlet connector 40 and the outlet connector 50, the length of the third segment 51 can be greater than the length of the first segment 41. The length of the fourth segment 52 can be greater than the length of the second segment 42.

[0180] Thus, since the first segment 41 and the second segment 42, as well as the third segment 51 and the fourth segment 52 of the connector 104 are parallel to each other, this layout helps to make more efficient use of space, thereby improving the space utilization rate of the battery device 100.

[0181] In some embodiments, there are two connectors 104, one of which is a water inlet connector 40 and the other is a water outlet connector 50. The water inlet connector 40 and the water outlet connector 50 are respectively disposed on two adjacent collectors 20.

[0182] Specifically, the inlet connector 40 and the outlet connector 50 can be connected to the corresponding parts on the two adjacent manifolds 20 by means of bonding, welding or other methods, or they can be integrally formed with the corresponding manifolds 20.

[0183] Thus, by placing the inlet connector 40 and the outlet connector 50 on two adjacent heat exchange components 102, the overall space occupied by the inlet connector 40 and the outlet connector 50 can be reduced. Furthermore, placing the connectors 104 on different heat exchange components 102 facilitates the layout of the inlet connector 40 and the outlet connector 50, thereby improving the manufacturing of the inlet connector 40 and the outlet connector 50 and reducing manufacturing complexity.

[0184] Referring to Figure 8, in some embodiments, the current collector 20 includes a first side 22 and a second side 23 connected to the first side 22. The surface area of ​​the second side 23 is larger than the surface area of ​​the first side 22. The connector 30 is connected to the second side 23. The inlet connector 40 and the outlet connector 50 are both connected to the first side 22.

[0185] Specifically, when the current collector 20 is rectangular, the second side surface 23 can be the outer surface with a larger area in the rectangular prism. The first side surface 22 can be the outer surface with a smaller area in the rectangular prism.

[0186] Thus, the connector 30 is connected to the second side 23 with a larger surface area, which facilitates the flow of a larger flow rate of heat exchange medium into the medium channel 21 of the heat exchanger 105, thereby improving the heat exchange efficiency of the heat exchanger 105. Both the inlet connector 40 and the outlet connector 50 are connected to the first side 22 with a smaller surface area, which reduces the space occupied by the inlet connector 40 and the outlet connector 50 on the heat exchanger 105, thereby improving the space utilization of the battery device 100.

[0187] Please refer to Figure 14, which is a partial structural schematic diagram of the battery device 100 provided in some embodiments of this application. In some embodiments, the connector 30 includes a first connecting pipe 31 and a second connecting pipe 32. The first connecting pipe 31 and the second connecting pipe 32 are disposed on the same side of the battery cell 10. Both the first connecting pipe 31 and the second connecting pipe 32 are connected to the medium flow channel 21. The first connecting pipe 31 is connected to the water inlet connector 40, and the second connecting pipe 32 is connected to the water outlet connector 50. The first connecting pipe 31 and the second connecting pipe 32 are spaced apart along a first direction z.

[0188] Specifically, there can be one or more first connecting pipes 31 and second connecting pipes 32. The number of first connecting pipes 31 and second connecting pipes 32 can correspond to the number of inlet connectors 40 and outlet connectors 50.

[0189] Both the first connecting pipe 31 and the second connecting pipe 32 can be used to connect the medium flow channels 21 of different heat exchangers 105. The first connecting pipe 31 and the second connecting pipe 32 can be connected at different positions on the heat exchanger 105.

[0190] The heat exchange medium can enter the first connecting pipe 31 through the inlet connector 40, then flow into the medium flow channel 21 through the first connecting pipe 31, then flow out of the medium flow channel 21 through the second connecting pipe 32, and then flow to the outlet connector 50 through the second connecting pipe 32.

[0191] The first connecting pipe 31 and the heat exchanger 105 can be connected by welding, bonding or other methods, or the first connecting pipe 31 and the heat exchanger 105 can be integrally formed. For example, the heat exchanger 105 can have a through hole communicating with the medium flow channel 21, and the first connecting pipe 31 is bonded to the periphery of the through hole so that the first connecting pipe 31 communicates with the medium flow channel 21.

[0192] The second connecting pipe 32 and the heat exchanger 105 can be connected by welding, bonding or other methods, or the second connecting pipe 32 and the heat exchanger 105 can be integrally formed. For example, the heat exchanger 105 can have a through hole communicating with the medium flow channel 21, and the second connecting pipe 32 is bonded to the periphery of the through hole so that the second connecting pipe 32 communicates with the medium flow channel 21.

[0193] Thus, since the first connecting pipe 31 and the second connecting pipe 32 are located on the same side of the battery cell 10, and the first connecting pipe 31 and the second connecting pipe 32 are spaced apart along the first direction z, the connecting member 30 occupies less space within the battery device 100. This improves the space utilization rate within the battery device 100, thereby increasing the energy density of the battery device 100 for the same volume.

[0194] Referring to Figure 10, in some embodiments, the second connecting portion 107 and the third connecting portion 108 of the water inlet connector 40 form a first main channel 310, which is connected to the first connecting pipe 31. The collector 20 has a first branch channel 24 and a second branch channel 25. The first branch channel 24 is connected to the first main channel 310 and the medium flow channel 21, and the second branch channel 25 is connected to the first main channel 310 and the water inlet connector 40.

[0195] The second connecting portion 107 and the third connecting portion 108 of the water outlet connector 50 form a second main channel 320, which is connected to the second connecting pipe 32. The collector 20 also has a third branch channel 26 and a fourth branch channel 27. The third branch channel 26 is connected to the second main channel 320 and the medium flow channel 21, and the fourth branch channel 27 is connected to the second main channel 320 and the water outlet connector 50.

[0196] Specifically, the number of the first branch channel 24, the second branch channel 25, the third branch channel 26, and the fourth branch channel 27 can all be one or more.

[0197] Both the first main channel 310 and the second main channel 320 can be connected to the corresponding collector 20. Both the first branch channel 24 and the second branch channel 25 can be located within the collector 20. The first main channel 310 is the inflow channel for the heat exchange medium. The heat exchange medium can flow from the first connection 106 of the inlet connector 40 to the second branch channel 25, then from the second branch channel 25 to the first main channel 310, then from the first main channel 310 to the medium flow channel 21, then from the medium flow channel 21 to the third branch channel 26, then from the third branch channel 26 to the second main channel 320, then from the second main channel 320 to the fourth branch channel 27, and then from the fourth branch channel 27 to the first connection 106 of the outlet connector 50.

[0198] Thus, the main channel can be used to transport the heat exchange medium, allowing it to flow through the connecting pipes to the area where each collector 20 is located. The branch channels allow the heat exchange medium to flow into the medium flow channels 21 of the heat exchanger 105. The connector 104 provides both inlet and outlet functions for the heat exchange medium, enabling it to be filled into or discharged from the main channel to ensure the reliability of the heat exchange assembly 102.

[0199] Referring to Figure 10, in some embodiments, the medium flow channel 21 includes a plurality of first chambers 210 and a plurality of second chambers 211, and the current collector 20 further includes a first current collector 28 and a second current collector 29. The first current collector 28 connects the first branch channel 24 and the first chamber 210, and the second current collector 29 connects the third branch channel 26 and the second chamber 211.

[0200] Specifically, the number of first chambers 210 can be two, three, four, or even more. The number of second chambers 211 can be two, three, four, or even more. The first chambers 210 and the second chambers 211 can be interconnected.

[0201] The heat exchange medium can flow from the first chamber 210 to the second chamber 211. The first collector 20 can be used to divert the heat exchange medium. The second collector 20 can be used to collect the heat exchange medium. Multiple channels can be provided between the first collector 20 and the first chamber 210. Multiple channels can be provided between the second collector 20 and the second chamber 211. When there is only one first diversion channel 24 and one third diversion channel 26, the first diversion channel 24 can be connected to a corresponding channel on the first collector 20. After the heat exchange medium flows into the first collector 20 from the first diversion channel 24, it can be transported to multiple first chambers 210 through multiple paths. In this way, the heat exchange medium can flow evenly into all parts of the heat exchange assembly 102, thereby reducing the probability of vortex dead zones after the heat exchange medium flows into the first chamber 210 and reducing local flow resistance.

[0202] Then, the heat exchange medium flows from the first chamber 210 to the second chamber 211. The heat exchange medium in the second chamber 211 can flow through multiple paths to the second collector 20, and then be collected by the second collector 20, thus flowing to the third branch channel 26. In this way, the heat exchange medium can flow evenly to all parts of the heat exchanger 105, thereby reducing the probability of vortex dead zones after the heat exchange medium flows into the second chamber 211 and reducing local flow resistance.

[0203] In this way, the collector 20 can have a flow-diverting function, which can reduce the probability of vortex dead zones after the heat exchange medium flows into the medium channel 21, reduce local flow resistance, and thus help optimize the flow path of the heat exchange medium in the medium channel 21, ensuring that the heat exchange medium can flow evenly through each chamber and improve the uniformity of heat exchange.

[0204] Referring to Figure 14, in some embodiments, the central axis of the first connecting pipe 31 and the central axis of the second connecting pipe 32 overlap along the first direction z.

[0205] Specifically, when the first connecting pipe 31 and the second connecting pipe 32 have the same shape and size, their projections in the first direction z can completely overlap. When the first connecting pipe 31 and the second connecting pipe 32 have different shapes and sizes, their projections in the first direction z have an overlapping area.

[0206] Thus, in the first direction z, the projections of the first connecting pipe 31 and the second connecting pipe 32 overlap, thereby further reducing the overall space occupied by the first connecting pipe 31 and the second connecting pipe 32.

[0207] Referring to Figure 14, in some embodiments, the battery device 100 further includes a connection structure 60, one end of which is connected to a first connection tube 31, and the other end of which is connected to a second connection tube 32.

[0208] Specifically, the connecting structure 60 can be connected to the first connecting pipe 31 or the second connecting pipe 32 by means of threaded connection, welding, etc. The connecting structure 60 and the first connecting pipe 31, as well as the connecting structure 60 and the second connecting pipe 32, can also be manufactured by integral molding. For example, the first connecting pipe 31 and the second connecting pipe 32 can be integrally molded by injection molding, and the first connecting pipe 31 and the second connecting pipe 32 can share the same outer surface.

[0209] Thus, the connecting structure 60 enhances the overall stability of the first connecting pipe 31 and the second connecting pipe 32, making it less prone to displacement or misalignment during use. Simultaneously, the connecting structure 60 allows the first connecting pipe 31 and the second connecting pipe 32 to form a single integrated structure, eliminating the need for separate assembly of the first connecting pipe 31 and the second connecting pipe 32, thereby improving assembly efficiency.

[0210] Referring to Figure 14, in some embodiments, there are multiple connecting structures 60, which are spaced apart along the second direction x, and the second direction x intersects the first direction z.

[0211] Specifically, the number of connecting structures 60 can be two, three, four, or even more. The connecting structures 60 can be connected to the first connecting pipe 31 or to multiple locations of the second connecting pipe 32.

[0212] The second direction x can be the extension direction of the first connecting pipe 31 or the second connecting pipe 32, or it can intersect with the aforementioned extension direction. When the second direction x is the extension direction of the first connecting pipe 31 or the second connecting pipe 32, multiple connecting pipes can be used for positioning and guidance during assembly, thereby preventing the first connecting pipe 31 and the second connecting pipe 32 from becoming misaligned.

[0213] Thus, multiple connection structures 60 can further enhance the overall stability of the first connecting pipe 31 and the second connecting pipe 32. Furthermore, even if one of the connection structures 60 fails, the first connecting pipe 31 and the second connecting pipe 32 can still form a stable connection through the other connection structures 60.

[0214] Referring to Figure 14, in some embodiments, each connection structure 60 is disposed between two adjacent current collectors 20.

[0215] By placing the connecting structure 60 between the current collectors 20, the internal spatial layout of the battery device 100 can be optimized, the space occupied by the connecting structure 60 in the internal space of the battery device 100 can be reduced, and the space utilization rate can be improved.

[0216] Please refer to Figures 15, 16, and 17. Figure 15 is a schematic diagram of the assembly structure of the connecting structure 60, the first connecting pipe 31, and the second connecting pipe 32 provided in some embodiments of this application; Figure 16 is a schematic diagram of the assembly structure of the connecting structure 60, the first connecting pipe 31, and the second connecting pipe 32 provided in other embodiments of this application; and Figure 17 is a schematic diagram of the assembly structure of the connecting structure 60, the first connecting pipe 31, and the second connecting pipe 32 provided in yet another embodiment of this application. In some embodiments, the connecting structure 60 further includes a connecting rib 61, a first collar 62, and a second collar 63. The first collar 62 is sleeved on the first connecting pipe 31, and the second collar 63 is sleeved on the second connecting pipe 32. The connecting rib 61 connects the first collar 62 and the second collar 63.

[0217] Specifically, the connecting rib 61 can be elongated. There can be one or more connecting ribs 61. Both the first ring 62 and the second ring 63 are ring-shaped structures. There can be one or more first rings 62 and second rings 63.

[0218] The inner surface of the first ring 62 can fit against the inner surface of the first connecting pipe 31. The inner surface of the second ring 63 can fit against the inner surface of the second connecting pipe 32. The connecting rib 61 can be connected to the outer surface of the first ring 62 and the outer surface of the second ring 63.

[0219] The connecting rib 61 and the first ring 62, as well as the connecting rib 61 and the second ring 63, can be manufactured separately and then connected by bonding, welding, or other methods. This reduces the overall manufacturing cost of the connecting rib 61. Alternatively, the connecting rib 61 and the first ring 62, as well as the connecting rib 61 and the second ring 63, can be integrally formed. This integrally formed connection structure 60 reduces potential weaknesses in the connected parts, resulting in higher structural strength and making it less prone to breakage during use.

[0220] Thus, by setting the first ring 62 and the second ring 63, the number of connection points between the connecting structure 60 and the first connecting pipe 31 and the second connecting pipe 32 increases, thereby improving the connection stability between the connecting structure 60 and the first connecting pipe 31 and the second connecting pipe 32, making it less likely for connection failure to occur between the connecting structure 60 and the first connecting pipe 31 and the second connecting pipe 32.

[0221] Please refer to Figures 15 and 18. Figure 18 is a schematic diagram of the assembly structure of Figure 15 from another perspective. In some embodiments, the connecting rib 61 includes a first portion 610 and a second portion 611 connected at an angle to the first portion 610. The first portion 610 is connected to the first collar 62, and the second portion 611 is connected to the second collar 63.

[0222] Specifically, the angle between the first part 610 and the second part 611 can be an acute angle, a right angle, or an obtuse angle. For example, if the angle between the first part 610 and the second part 611 is a right angle, the first part 610 and the second part 611 can form an "L" shape. The first part 610 and the second part 611 can be manufactured separately and then connected by means of bonding, welding, etc. In this way, the overall manufacturing cost of the connecting rib 61 is lower. The first part 610 and the second part 611 can also be integrally formed. In this way, the integrally formed connecting rib 61 reduces the possible weaknesses in connecting the parts, so the connecting rib 61 has higher structural strength and is less prone to breakage during use.

[0223] Thus, since the first part 610 and the second part 611 are connected at an angle, the connecting rib 61 can be applied to the first connecting pipe 31 and the second connecting pipe 32 with different center distances, thereby improving the commonality of the connecting structure 60.

[0224] Please refer to Figures 16, 17, 19, and 20. Figure 19 is a schematic diagram of the assembly structure of Figure 16 from another perspective; Figure 20 is a schematic diagram of the assembly structure of Figure 17 from another perspective. In some embodiments, the connecting rib 61 includes a first connecting segment 612, a second connecting segment 613, and a third connecting segment 614. The first connecting segment 612 is connected to the first collar 62, the second connecting segment 613 is connected to the second collar 63, and the third connecting segment 614 is a ring-shaped structure with open ends. The first connecting segment 612 and the second connecting segment 613 are connected to the opposite sides of the third connecting segment 614.

[0225] Specifically, the ring structure can be a circular ring, an elliptical ring, or other suitable shapes. The first connecting segment 612, the second connecting segment 613, and the third connecting segment 614 can be manufactured separately and then connected by bonding, welding, or other methods. This reduces the overall manufacturing cost of the connecting rib 61. Alternatively, the first connecting segment 612, the second connecting segment 613, and the third connecting segment 614 can be integrally formed. This integrally formed connecting rib 61 reduces potential weaknesses in the connection, resulting in higher structural strength and making it less prone to breakage during use.

[0226] Thus, the third connecting segment 614 of the annular structure can more evenly distribute the stress on the connecting rib 61, reduce local stress concentration, thereby improving the overall stability of the connecting rib 61 and thus improving the reliability of the connection between the first connecting pipe 31 and the second connecting pipe 32. At the same time, the third connecting segment 614 can also absorb manufacturing tolerances, thereby reducing the probability of the first connecting pipe 31 and the second connecting pipe 32 undergoing group deformation or skewing.

[0227] Referring to Figures 16 and 19, in some embodiments, the third connecting segment 614 has a through hole 6140, the extension direction m of which is parallel to the length direction of the first connecting pipe 31.

[0228] Specifically, the via 6140 can be circular, elliptical, or other suitable shapes. By providing the via 6140, the third connecting section 614 is easily deformable, and even if there are manufacturing tolerances in the first connecting tube 31 and the second connecting tube 32, they can be compensated for by the deformation of the third connecting section 614.

[0229] Thus, the third connecting section 614 can absorb the manufacturing tolerances of the first connecting pipe 31 and the second connecting pipe 32 along the length direction of the first connecting pipe 31, thereby reducing the probability of the first connecting pipe 31 and the second connecting pipe 32 undergoing group deformation or skewing.

[0230] Please refer to Figures 17, 20, 21, and 22. Figure 21 is a schematic diagram of the assembly structure of the connection structure 60, the first connecting pipe 31, and the second connecting pipe 32 provided in some embodiments of this application; Figure 22 is a schematic diagram of the assembly structure of Figure 21 from another perspective. In some embodiments, the third connecting segment 614 has a through hole 6140, and the extending direction m of the through hole 6140 is perpendicular to the length direction of the first connecting pipe 31.

[0231] Thus, the third connecting section 614 can absorb the manufacturing tolerances of the first connecting pipe 31 and the second connecting pipe 32 along the length direction perpendicular to the first connecting pipe 31, thereby reducing the probability of the first connecting pipe 31 and the second connecting pipe 32 undergoing group deformation or skewing.

[0232] Referring to Figures 17 and 20, in some embodiments, the axial dimension of the third connecting segment 614 is greater than the axial dimension of the first collar 62.

[0233] Thus, the third connecting segment 614 can swing along the extension direction m of the through hole 6140, thereby absorbing the manufacturing tolerances of the first connecting pipe 31 and the second connecting pipe 32 along the extension direction m of the through hole 6140, thereby reducing the probability of the first connecting pipe 31 and the second connecting pipe 32 undergoing group deformation or skewing.

[0234] Referring to Figures 21 and 22, in some embodiments, the axial dimension of the third connecting segment 614 is less than or equal to the axial dimension of the first collar 62.

[0235] Thus, the third connecting segment 614 can swing radially n along the through hole 6140, thereby absorbing the manufacturing tolerances of the first connecting pipe 31 and the second connecting pipe 32 along the radially n of the through hole 6140, thereby reducing the probability of the first connecting pipe 31 and the second connecting pipe 32 undergoing group deformation or skew.

[0236] Please refer to Figure 23, which is a partial structural schematic diagram of a battery device 100 provided in some embodiments of this application. In some embodiments, the battery device 100 includes multiple rows of battery cells 10 arranged along a third direction y, and a heat exchange body 103 extends along the third direction y and is connected to a first wall 11 of each battery cell 10, wherein the first wall 11 is the wall with the largest surface area among the battery cells 10.

[0237] Specifically, the number of columns for the battery cells 10 can be two, three, four, or even more. Multiple battery cells 10 can be arranged along the length, height, or width of one of the battery cells 10. For example, multiple battery cells 10 can be arranged along the length of one of the battery cells 10. In this case, the third direction y is the same as the length direction of the battery cell 10. As another example, multiple battery cells 10 can be arranged along the width of one of the battery cells 10. In this case, the third direction y is the same as the width direction of the battery cell 10.

[0238] The battery cell 10 may include multiple walls, with the first wall 11, which has the largest surface area, connected to the heat exchange body 103. That is, the first wall 11 of the battery cell 10 faces the heat exchange body 103, or in other words, the first wall 11 of the battery cell 10 is parallel to a third direction y. The outer surface of the first wall 11 can be in contact with the outer surface of the heat exchange body 103. The entire outer surface of the first wall 11 can be in contact with the heat exchange body 103 to improve the heat exchange effect of the battery cell 10.

[0239] Thus, since the heat exchange body 103 is connected to the first wall 11 with the largest surface area in the battery cell 10, the heat exchange body 103 can more effectively regulate the temperature of the battery cell 10.

[0240] Referring to Figure 23, in some embodiments, the battery cell 10 includes two second walls 12 disposed opposite to each other in the third direction y, wherein the second walls 12 of two adjacent battery cells 10 are aligned in the third direction y.

[0241] Specifically, the second walls 12 of two adjacent battery cells 10 can be spaced apart or connected to each other.

[0242] In this way, the battery cells 10 can be arranged closely together, and this layout can make more efficient use of the space inside the battery device 100 and improve the space utilization rate of the battery device 100.

[0243] Referring to Figure 5, in some embodiments, the heat exchange body 103 and the battery cell 10 are alternately arranged in the second direction x, which intersects with the third direction y.

[0244] Specifically, along the second direction x, the battery cell 10 and the heat exchange body 103 can be arranged alternately in the manner of heat exchange body 103, a row of battery cells 10, heat exchange body 103... or they can be arranged alternately in the manner of a row of battery cells 10, heat exchange body 103, a row of battery cells 10...

[0245] In this way, multiple rows of battery cells 10 and multiple heat exchange bodies 103 are interconnected to form a whole and housed in the housing 101. This not only enables effective thermal management of each row of battery cells 10, but also ensures the overall structural strength of the battery device 100, thereby improving the performance of the battery device 100.

[0246] In some embodiments, the heat exchange body 103 is bonded to the first wall 11.

[0247] Specifically, bonding refers to using an adhesive to fix the heat exchanger body 103 to the first wall 11 of the battery cell 10. The bonding can use thermosetting adhesives, structural adhesives, or other types of adhesives, and can be adapted to the operating temperature, pressure, and environmental conditions of the battery device 100.

[0248] Thus, the adhesive connection provides a robust fixation method, enhancing the structural stability between the heat exchange body 103 and the first wall 11 of the battery cell 10, and reducing displacement or damage caused by vibration or impact during the operation of the battery device 100. This allows the heat exchange body 103 to remain in continuous contact with the first wall 11 to continuously regulate the temperature of the battery cell 10.

[0249] In some embodiments, the bottom wall of the housing 101 is connected to the battery cell 10, the side wall of the housing 101 is spaced apart from the battery cell 10, and the minimum distance between the side wall of the housing 101 and the battery cell 10 ranges from [5mm, 35mm].

[0250] Specifically, the battery cell 10 can be connected to the bottom wall of the housing 101 by means of bolts, welding, or bonding. The minimum distance between the side wall of the housing 101 and the battery cell 10 can be in the range of [5mm, 30mm], [10mm, 25mm], [15mm, 35mm], [30mm, 35mm], etc.

[0251] Because the heat exchange component 102 occupies less space within the housing 101, the volume of the battery cell 10 can be made larger. Within the aforementioned numerical range, the battery cell 10 is less likely to rub against the side wall of the housing 101 and can also have a larger volume, thereby achieving a higher energy density.

[0252] In one specific embodiment, the battery device 100 includes a housing 101, battery cells 10, and a heat exchange assembly 102. The battery cells 10 are disposed within the housing 101. The heat exchange assembly 102 is configured to exchange heat with the battery cells 10.

[0253] The bottom wall of the housing 101 is connected to the battery cell 10. The side wall of the housing 101 is spaced apart from the battery cell 10. The minimum distance between the side wall of the housing 101 and the battery cell 10 is 5mm. Referring to Figure 7, the housing 101 has an interface 1012. The interface 1012 is provided on one of the side walls of the housing 101.

[0254] Referring to Figure 23, the number of battery cells 10 is in multiple rows. These multiple rows of battery cells 10 are arranged along a third direction y. Each battery cell 10 includes two second walls 12 disposed opposite to each other along the third direction y. Along the third direction y, the second walls 12 of adjacent battery cells 10 are aligned.

[0255] The heat exchange body 103 extends along the third direction y and is bonded to the first wall 11 of each battery cell 10. The first wall 11 is the wall with the largest surface area in the battery cell 10.

[0256] Referring to Figure 5, the heat exchange assembly 102 includes multiple heat exchange bodies 103, connectors 30, and joints 104. The multiple heat exchange bodies 103 are in contact with the battery cells 10. The heat exchange bodies 103 and the battery cells 10 are alternately arranged in a second direction x. The second direction x intersects with a third direction y.

[0257] Referring to Figures 7 and 10, the heat exchange body 103 includes a heat exchange element 105 and a current collector 20. The heat exchange element 105 has a media flow channel 21 inside and is disposed between adjacent battery cells 10. The current collector 20 is connected to at least one end of the heat exchange element 105, communicates with the media flow channel 21, and has connecting members 30 connected to its two opposite sidewalls. Adjacent current collectors 20 are connected via connecting members 30.

[0258] Connector 30 connects multiple manifolds 20. Connector 104 connects interface 1012 and manifolds 20. Connector 104 is located on one side of the length direction of housing 101. Multiple connectors 104 are located on the same side of housing 101.

[0259] Referring to Figure 8, connector 104 includes a first connecting portion 106, a second connecting portion 107, and a third connecting portion 108. One end of the first connecting portion 106 is connected to the end of the collector 20 away from the heat exchanger 105. The other end of the first connecting portion 106 is connected to the interface 1012. One end of the second connecting portion 107 is connected to one of the two sidewalls opposite to the collector 20. The other end of the second connecting portion 107 is connected to the connector 30 located on one side of the collector 20. One end of the third connecting portion 108 is connected to the other sidewall opposite to the collector 20. The other end of the third connecting portion 108 is connected to the connector 30 located on the other side of the collector 20.

[0260] Referring to Figure 10, there are two connectors 104. One connector 104 is a water inlet connector 40, and the other connector 104 is a water outlet connector 50. The water inlet connector 40 and the water outlet connector 50 are disposed on the same collector 20. The water inlet connector 40 and the water outlet connector 50 are spaced apart along the first direction z. Along the first direction z, the central axis of the water inlet connector 40 overlaps with the central axis of the water outlet connector 50.

[0261] Referring to Figure 8, the current collector 20 includes a first side surface 22 and a second side surface 23 connected to the first side surface 22. The surface area of ​​the second side surface 23 is larger than the surface area of ​​the first side surface 22. The connector 30 is connected to the second side surface 23. The inlet connector 40 and the outlet connector 50 are both connected to the first side surface 22.

[0262] Referring to Figure 14, the connector 30 includes a first connecting pipe 31 and a second connecting pipe 32. The first connecting pipe 31 and the second connecting pipe 32 are located on the same side of the battery cell 10. Both the first connecting pipe 31 and the second connecting pipe 32 are connected to the medium flow channel 21. The first connecting pipe 31 is connected to the water inlet connector 40. The second connecting pipe 32 is connected to the water outlet connector 50. Along the first direction z, the central axis of the first connecting pipe 31 and the central axis of the second connecting pipe 32 overlap.

[0263] Referring to Figure 10, the second connecting portion 107 and the third connecting portion 108 of the water inlet connector 40 form a first main flow channel 310. The first connecting pipe 31 has the first main flow channel 310. The collector 20 has a first branch channel 24 and a second branch channel 25. The first branch channel 24 connects the first main flow channel 310 and the medium flow channel 21. The second branch channel 25 connects the first main flow channel 310 and the water inlet connector 40.

[0264] The second connecting portion 107 and the third connecting portion 108 of the outlet connector 50 form a second main flow channel 320, which communicates with the second connecting pipe 32. The second connecting pipe 32 also has the second main flow channel 320. The collector 20 also has a third branch channel 26 and a fourth branch channel 27. The third branch channel 26 communicates with the second main flow channel 320 and the medium flow channel 21. The fourth branch channel 27 communicates with the second main flow channel 320 and the outlet connector 50.

[0265] The medium flow channel 21 includes multiple first chambers 210 and multiple second chambers 211. The current collector 20 also includes a first current collector 28 and a second current collector 29. The first current collector 28 connects the first branch channel 24 and the first chambers 210. The second current collector 29 connects the third branch channel 26 and the second chambers 211.

[0266] Referring to Figure 14, the battery device 100 also includes a connecting structure 60. One end of the connecting structure 60 is connected to a first connecting pipe 31. The other end of the connecting structure 60 is connected to a second connecting pipe 32. There are multiple connecting structures 60. These multiple connecting structures 60 are spaced apart along a second direction x. The second direction x intersects with the first direction z. Each connecting structure 60 is disposed between two adjacent current collectors 20.

[0267] The connecting structure 60 also includes a connecting rib 61, a first collar 62, and a second collar 63. The first collar 62 is fitted onto the first connecting pipe 31. The second collar 63 is fitted onto the second connecting pipe 32. The connecting rib 61 connects the first collar 62 and the second collar 63.

[0268] Referring to Figure 16, the connecting rib 61 includes a first connecting segment 612, a second connecting segment 613, and a third connecting segment 614. The first connecting segment 612 is connected to the first collar 62. The second connecting segment 613 is connected to the second collar 63. The first connecting segment 612 and the second connecting segment 613 are connected on opposite sides of the third connecting segment 614. The third connecting segment 614 is a ring-shaped structure with openings at both ends. The third connecting segment 614 has a through hole 6140, and the extending direction m of the through hole 6140 is parallel to the length direction of the first connecting pipe 31.

[0269] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The enclosure has interfaces; The battery cell is housed inside the casing; A heat exchange assembly configured to exchange heat with the individual battery cells; wherein the heat exchange assembly includes: Multiple heat exchange elements are in contact with the battery cell; Connecting components, for connecting the plurality of heat exchange bodies; A connector connects the interface and the heat exchange body, or connects the interface and the connector; wherein the connector is located on one side of the housing.

2. The battery device according to claim 1, characterized in that, The number of connectors is multiple, and the multiple connectors are located on the same side of the housing.

3. The battery device according to claim 1, characterized in that, The connector is located on one side of the length direction of the housing.

4. The battery device according to claim 1, characterized in that, The heat exchange body includes a heat exchange element and a current collector. The heat exchange element has a medium flow channel inside. The heat exchange element is disposed between adjacent battery cells. The current collector is connected to at least one end of the heat exchange element and communicates with the medium flow channel. The two opposite sidewalls of the current collector are connected to the connecting member. Two adjacent current collectors are connected through the connecting member.

5. The battery device according to claim 4, characterized in that, The connector includes a first connecting part, a second connecting part, and a third connecting part. One end of the first connecting part is connected to the interface, and the second connecting part and the third connecting part are connected to two connectors that connect two adjacent current collectors.

6. The battery device according to claim 4, characterized in that, The connector includes a first connecting part, a second connecting part, and a third connecting part. One end of the first connecting part is connected to the end of the current collector away from the heat exchanger, and the other end of the first connecting part is connected to the interface. One end of the second connecting part is connected to one of the two side walls opposite to the current collector, and the other end of the second connecting part is connected to a connector located on one side of the current collector. One end of the third connecting part is connected to the other of the two side walls opposite to the current collector, and the other end of the third connecting part is connected to a connector located on the other side of the current collector.

7. The battery device according to claim 6, characterized in that, The number of connectors is two, one of which is a water inlet connector and the other is a water outlet connector. The water inlet connector and the water outlet connector are installed on the same collector.

8. The battery device according to claim 7, characterized in that, The inlet connector and the outlet connector are spaced apart along the first direction.

9. The battery device according to claim 8, characterized in that, Along the first direction, the central axis of the water inlet connector overlaps with the central axis of the water outlet connector.

10. The battery device according to claim 8 or 9, characterized in that, The first connecting part of the water inlet connector includes a first section and a second section, the first section and the second section are connected at an angle, and the first section is connected to the collector; the first connecting part of the water outlet connector includes a third section and a fourth section, the third section and the fourth section are connected at an angle, and the third section is in communication with the collector; wherein, the first section and the second section are parallel to each other, and the third section and the fourth section are parallel to each other.

11. The battery device according to claim 6, characterized in that, The number of connectors is two, one of which is a water inlet connector and the other is a water outlet connector. The water inlet connector and the water outlet connector are respectively installed on two adjacent water collectors.

12. The battery device according to claim 7 or 11, characterized in that, The collector includes a first side and a second side connected to the first side. The surface area of ​​the second side is larger than that of the first side. The connector is connected to the second side. The inlet connector and the outlet connector are both connected to the first side.

13. The battery device according to claim 7 or 11, characterized in that, The connector includes a first connecting pipe and a second connecting pipe, which are disposed on the same side of the battery cell. Both the first connecting pipe and the second connecting pipe are connected to the medium flow channel. The first connecting pipe is connected to the water inlet connector, and the second connecting pipe is connected to the water outlet connector. The first connecting pipe and the second connecting pipe are spaced apart along a first direction.

14. The battery device according to claim 13, characterized in that, The second connecting portion and the third connecting portion of the water inlet connector form a first main channel, which is connected to the first connecting pipe. The collector has a first branch channel and a second branch channel. The first branch channel is connected to the first main channel and the medium channel, and the second branch channel is connected to the first main channel and the water inlet connector. The second connecting part and the third connecting part of the water outlet connector form a second main channel, which is connected to the second connecting pipe. The collector also has a third branch channel and a fourth branch channel. The third branch channel is connected to the second main channel and the medium channel, and the fourth branch channel is connected to the second main channel and the water outlet connector.

15. The battery device according to claim 14, characterized in that, The medium flow channel includes multiple first chambers and multiple second chambers. The current collector also includes a first current collector and a second current collector. The first current collector connects the first branch channel and the first chamber, and the second current collector connects the third branch channel and the second chamber.

16. The battery device according to any one of claims 13-15, characterized in that, Along the first direction, the central axis of the first connecting pipe overlaps with the central axis of the second connecting pipe.

17. The battery device according to any one of claims 13-16, characterized in that, The battery device further includes a connection structure, one end of which is connected to the first connection tube, and the other end of which is connected to the second connection tube.

18. The battery device according to claim 17, characterized in that, The number of connection structures is multiple, and the multiple connection structures are spaced apart along the second direction, which intersects with the first direction.

19. The battery device according to claim 18, characterized in that, Each of the connection structures is disposed between two adjacent current collectors.

20. The battery device according to any one of claims 17-19, characterized in that, The connecting structure further includes a connecting rib, a first collar and a second collar, the first collar being sleeved on the first connecting pipe and the second collar being sleeved on the second connecting pipe, and the connecting rib connecting the first collar and the second collar.

21. The battery device according to claim 20, characterized in that, The connecting rib includes a first part and a second part that is connected at an angle to the first part. The first part is connected to the first collar, and the second part is connected to the second collar.

22. The battery device according to claim 20, characterized in that, The connecting rib includes a first connecting segment, a second connecting segment, and a third connecting segment. The first connecting segment is connected to the first collar, the second connecting segment is connected to the second collar, and the third connecting segment is a ring structure with open ends. The first connecting segment and the second connecting segment are connected to opposite sides of the third connecting segment.

23. The battery device according to claim 22, characterized in that, The third connecting section has a through hole, and the extension direction of the through hole is parallel to the length direction of the first connecting pipe.

24. The battery device according to claim 22, characterized in that, The third connecting section has a through hole, and the extension direction of the through hole is perpendicular to the length direction of the first connecting pipe.

25. The battery device according to claim 24, characterized in that, The axial dimension of the third connecting segment is greater than the axial dimension of the first collar.

26. The battery device according to claim 24, characterized in that, The axial dimension of the third connecting segment is less than or equal to the axial dimension of the first collar.

27. The battery device according to any one of claims 1-26, characterized in that, The battery device includes multiple rows of battery cells arranged along a third direction, and the heat exchange body extends along the third direction and is connected to a first wall of each battery cell, wherein the first wall is the wall with the largest surface area among the battery cells.

28. The battery device according to claim 27, characterized in that, The battery cell includes two second walls disposed opposite each other in the third direction, and the second walls of two adjacent battery cells are aligned in the third direction.

29. The battery device according to claim 27 or 28, characterized in that, The heat exchanger body and the battery cell are alternately arranged in a second direction, which intersects with the third direction.

30. The battery device according to any one of claims 27-29, characterized in that, The heat exchanger body is bonded to the first wall.

31. The battery device according to claim 1, characterized in that, The bottom wall of the housing is connected to the battery cell, and the side wall of the housing is spaced apart from the battery cell. The minimum distance between the side wall of the housing and the battery cell is [5mm, 35mm].

32. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1-31 is used to provide electrical energy.

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