Battery device and electric equipment

Abstract

The utility model provides a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a heat exchange assembly, a battery monomer and a blocking member, the heat exchange assembly is used for heat exchange with the battery monomer; the heat exchange assembly is internally provided with channels and a flow dividing space, the multiple channels are sequentially arranged in the first direction, the multiple channels comprise multiple flow guide channels, and the flow directions of heat exchange media in part of the flow guide channels are opposite. The multiple diversion spaces are located at the two opposite ends of the multiple diversion channels in the second direction, and the inlet end and the outlet end of each diversion channel communicate with the diversion spaces on the corresponding sides correspondingly. And at least part of the blocking piece is contained in the flow dividing space, the blocking piece is plugged between the upstream inlet end and the downstream outlet end of the two flow guide channels with the opposite flow directions, and the blocking piece is in sealing fit with the heat exchange assembly. The first direction intersects the second direction. The battery device is used for storing or providing electric energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and an electric equipment. BACKGROUND

[0002] New energy batteries are more and more widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also more and more widely used in the field of energy storage and the like.

[0003] In the battery device, heat exchange components are used to dissipate heat from the battery monomer. The structure of the heat exchange component has an important influence on the stability of heat exchange, which is one of the important research topics at present. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the present application provides a battery device and an electric equipment, which are used to improve the heat exchange stability of the heat exchange component.

[0005] The present application is implemented through the following technical solutions.

[0006] The first aspect of the present application provides a battery device, which comprises at least one battery monomer, a heat exchange assembly and at least one blocking piece. The heat exchange assembly is used for heat exchange with the battery monomer. The heat exchange assembly has a plurality of channels and a plurality of flow distribution spaces inside. The plurality of channels are arranged in sequence along a first direction. The plurality of channels comprise a plurality of flow guide channels for the flow of heat exchange medium. The flow directions of the heat exchange medium in some flow guide channels are opposite. The plurality of flow distribution spaces are located at opposite ends of the plurality of flow guide channels along a second direction. The inlet end and the outlet end of each flow guide channel are in communication with the flow distribution spaces on the corresponding side. At least part of the blocking piece is accommodated in the flow distribution space. The blocking piece is located between the inlet end at the upstream and the outlet end at the downstream of the two flow guide channels with opposite flow directions. The blocking piece is in sealing cooperation with the heat exchange assembly. The first direction intersects with the second direction.

[0007] In the technical solution of the present application, the battery monomer is used to store or provide electric energy. The heat exchange assembly is used for heat exchange with the battery monomer. For example, the battery monomer can be cooled to make the battery monomer at a suitable working temperature, so as to ensure the normal and stable work of the battery monomer.

[0008] The heat exchange assembly has a plurality of flow guide channels and a plurality of flow distribution spaces inside. The inlet end and the outlet end of each flow guide channel are in communication with the flow distribution spaces on the corresponding side respectively. The flow directions of the heat exchange medium in some flow guide channels are opposite. The upstream inlet end and the downstream outlet end of the flow guide channels with opposite flow directions are blocked by the blocking member. Therefore, the plurality of flow guide channels can be connected together in a "S" type flow direction through the flow distribution spaces. During the flow of the heat exchange medium through the plurality of flow guide channels, the heat exchange medium can exchange heat with the battery monomer through the heat exchange assembly to adjust the temperature of the battery monomer.

[0009] The blocking member is in sealing fit with the heat exchange assembly. Therefore, the blocking tightness between the blocking member and the heat exchange assembly can be improved, the sealing effect and the sealing performance are improved, the probability of the heat exchange medium flowing from the downstream outlet end to the upstream inlet end is reduced, the structural reliability of the heat exchange assembly is ensured, the heat exchange medium can flow in the plurality of flow guide channels according to the established flow path, the heat exchange stability of the heat exchange assembly is ensured, and the reliability of the battery device is improved.

[0010] In some embodiments of the present application, the heat exchange assembly includes a heat exchange component and two current collectors connected together. The heat exchange component has a plurality of flow guide channels inside. The inlet end and the outlet end of the flow guide channels are located at the two opposite end faces of the heat exchange component along the second direction. The two opposite end faces of the heat exchange component are enclosed with different current collectors to form flow distribution spaces. The blocking member is in sealing fit with the heat exchange component and / or the current collector.

[0011] In this way, the flow guide channels are formed inside the heat exchange component. The two opposite end faces of the heat exchange component are enclosed with different current collectors to form flow distribution spaces. The inlet end and the outlet end of the flow guide channels are located at the two opposite end faces of the heat exchange component. Therefore, the plurality of flow guide channels can be connected through the flow distribution spaces. The heat exchange component and the current collector can facilitate the formation of the flow guide channels and the flow distribution spaces respectively, and improve the processing convenience. The sealing fit of the blocking member with the heat exchange component and / or the current collector can still improve the effect of separating the upstream inlet end and the downstream outlet end, improve the structural reliability of the heat exchange assembly, ensure the heat exchange stability of the heat exchange assembly, and improve the reliability of the battery device.

[0012] In some embodiments of the present application, the end face of the heat exchange component includes a matching face. The upstream inlet end and the downstream outlet end of the flow guide channels with opposite flow directions have the matching face. The blocking member is connected to the current collector and is in sealing fit with the matching face along the second direction.

[0013] This configuration ensures a tight seal between the baffle and the mating surface on the heat exchange component's end face, effectively separating the upstream inlet from the downstream outlet to reduce the probability of crossflow. Since the baffle is connected to the current collector but not directly to the heat exchange component, installing the current collector onto the heat exchange component simultaneously creates a flow divider space and achieves the baffle's separation effect, improving installation convenience.

[0014] In some embodiments of this application, the heat exchange component includes a main body and a plurality of partition plates. The main body has an accommodating space extending through the main body to opposite ends along a second direction. The plurality of partition plates are spaced apart in the accommodating space along a first direction. The partition plates extend along the second direction to divide the accommodating space into multiple channels, all of which are flow channels. The end faces of some partition plates are configured as mating surfaces.

[0015] With this configuration, the partition plate divides the internal space of the main body to form a heat exchange component with channels. Since all channels are flow channels, the utilization rate of the housing space is improved. Within a certain volume of housing space, more flow channels can be set, so the heat exchange medium can flow through a longer path, which can improve the heat exchange efficiency. In this case, the end faces of some partition plates form mating surfaces to seal with the blocking components.

[0016] In some embodiments of this application, the heat exchange component includes a main body, a plurality of partition plates, and a blocking part. The main body has an accommodating space extending through the main body to opposite ends along a second direction. The plurality of partition plates are spaced apart in the accommodating space along a first direction and extend along the second direction to divide the accommodating space into multiple channels. The blocking part blocks some channels to form spare channels at opposite ends along the second direction, and the remaining channels form flow guiding channels. Along the first direction, the spare channels are located between two flow guiding channels with opposite flow directions. At least a portion of the mating surface is located on the side of the blocking part opposite to the flow dividing space.

[0017] In this configuration, the partition plate divides the internal space of the main body to form a heat exchange component with channels. Through the sealing action of the sealing portion, some channels become spare channels, while others become guiding channels. In this case, during actual use of the heat exchange component, the position and number of the sealing portions can be adjusted as needed. This can increase the number of spare channels to reduce the number of guiding channels, thus reducing the weight of the heat exchange component; or decrease the number of spare channels to increase the number of guiding channels, thereby improving heat exchange efficiency. This enhances the adaptability of the heat exchange component. In this configuration, at least a portion of the mating surface can be located on the side opposite the sealing portion and the diversion space, facilitating the separation of the upstream inlet end and the downstream outlet end using a blocking element.

[0018] In some embodiments of this application, the mating surface is located entirely on the blocking portion; or, the mating surface includes a first sub-surface and a second sub-surface, the first sub-surface being located on the side of the blocking portion opposite to the diversion space, the second sub-surface being located on the side of the partition plate opposite to the diversion space, and the blocking member sealingly mating with the first sub-surface and / or the second sub-surface.

[0019] With this configuration, the mating surface can be located entirely on the sealing part, thus improving the ease of mating between the blocking member and the mating surface. Alternatively, the mating surface can also include two parts: a first sub-surface and a second sub-surface. The first sub-surface is located on the sealing part, and the second sub-surface is located on the partition plate, so that the blocking member can be sealed with the sealing part and / or the partition plate.

[0020] In some embodiments of this application, a recessed portion is formed in a direction facing away from the diversion space, and a blocking member extends into the recessed portion and seals with the recessed portion; or, a protruding portion is formed in a direction facing towards the diversion space, and a first recessed groove is formed on the blocking member, and the protruding portion extends into the first groove and seals with the first groove.

[0021] With this configuration, the blocking member extends into the recessed portion to form a sealing fit. This insertion fit between the recessed portion and the blocking member serves a positioning function. Additionally, it increases the contact area between the mating surface and the blocking member, extending the flow path of the crossflow and improving sealing performance. Alternatively, the mating surface can form a protrusion facing the flow distribution space, and the blocking member can have an inwardly recessed first groove. The protrusion extending into this first groove also provides a positioning function, increases the contact area between the mating surface and the blocking member, extends the flow path of the crossflow, and improves sealing performance.

[0022] In some embodiments of this application, the blocking member extends into the recess and is elastically pressurized with the recess. Alternatively, the protrusion extends into the first groove and is elastically pressurized with the first groove.

[0023] This configuration ensures the sealing of the blocking member and the recessed portion through an elastic interference fit. Alternatively, the sealing of the protrusion and the first groove can be ensured through an elastic interference fit.

[0024] In some embodiments of this application, the battery device further includes a housing, and there are multiple battery cells arranged along a third direction to form a battery cell assembly. The battery cell assembly is housed in the housing. Along the third direction, a heat exchange assembly is located between adjacent battery cells or between a battery cell and the inner wall of the housing. The projection of the recessed portion onto the same projection plane along the third direction does not overlap with the projection of the battery cell assembly. The first direction, the second direction, and the third direction intersect each other.

[0025] With this configuration, along the third direction, the heat exchange component can dissipate heat from at least one of the battery cells. Since the projection of the recessed portion in the third direction does not overlap with the projection of the battery cell component, the depth of the recessed portion along the second direction can be controlled, reducing the impact of the recessed portion on the heat exchange component and ensuring the heat exchange effect between the heat exchange component and the battery cell.

[0026] In some embodiments of this application, the heat exchange component includes a main body, multiple partition plates, and a blocking part. The main body has an accommodating space extending through both ends of the main body along a second direction. The multiple partition plates are spaced apart in the accommodating space along a first direction and extend along the second direction to divide the accommodating space into multiple channels. The blocking part blocks some of the channels at both ends along the second direction to form a spare channel, and the remaining channels form a guide channel. Along the first direction, the spare channel is located between two guide channels with opposite flow directions. At least a portion of the mating surface is located on the side of the blocking part opposite to the diversion space. The side of the blocking part away from the diversion space has a first protrusion protruding outward, and a recessed part is recessed to partially enter the first protrusion.

[0027] With this configuration, since the recessed portion partially enters the first protrusion, the depth of the recessed portion can be guaranteed, ensuring the contact area between the blocking component and the recessed portion and improving the sealing effect. At the same time, since the first protrusion protrudes towards the side of the sealing portion away from the diversion space, the structural strength of the recessed portion can also be guaranteed, taking into account the structural strength of the sealing portion and improving the durability of the sealing portion.

[0028] In some embodiments of this application, at least a portion of the blocking member is made of an elastic material, at least a portion of the heat exchange component is made of a rigid material, the mating surface is located at least a portion of the heat exchange component, and at least a portion of the blocking member abuts against the mating surface.

[0029] With this configuration, at least a portion of the blocking element made of elastic material and at least a portion of the heat exchange component made of rigid material abut against each other to achieve an elastic fit, thus ensuring the stability of the abutment position and the stability of the seal.

[0030] In some embodiments of this application, at least a portion of the blocking member is made of a rigid material, at least a portion of the heat exchange component is made of an elastic material, the mating surface is located at least a portion of the heat exchange component, and at least a portion of the blocking member abuts against the mating surface.

[0031] With this configuration, at least a portion of the rigid material blocking member and at least a portion of the elastic material heat exchange member abut against each other to achieve an elastic fit, thus ensuring the stability of the abutment position and the stability of the seal.

[0032] In some embodiments of this application, the blocking member is connected to the end face of the heat exchange component; the current collector has a second groove located on the inner wall of the diversion space and recessed in a direction away from the diversion space; the blocking member extends into the second groove and is sealed with the second groove; or, the blocking member has an inwardly recessed third groove, and the current collector has a second protrusion protruding into the diversion space; the second protrusion extends into the third groove and is sealed with the third groove.

[0033] With this configuration, the blocking member extends into the second groove to form a sealing engagement with a portion of the current collector within the second groove. This insertion and engagement of the blocking member and the second groove provides a positioning function. Additionally, it increases the contact area between the blocking member and the second groove, extending the flow path of the crossflow and improving sealing performance. Alternatively, the second protrusion on the current collector extends into the third groove on the blocking member. This also provides a positioning function and increases the contact area between the second protrusion and the portion of the blocking member within the third groove, extending the flow path of the crossflow and improving sealing performance.

[0034] In some embodiments of this application, the two current collectors include a first current collector and a second current collector. A blocking member is disposed in the diversion space of the first current collector to separate a first subspace. The first current collector has an inlet communicating with the first subspace. The blocking member is disposed in the diversion space of the second current collector to separate a second subspace. The second current collector has an outlet communicating with the second subspace.

[0035] Along the first direction, multiple flow channels include a first flow channel and a second flow channel located on the outermost side and arranged opposite each other. The inlet is connected to the inlet end of the first flow channel via a first subspace, and the outlet end of the second flow channel is connected to the outlet via a second subspace.

[0036] This configuration uses a blocking element to separate the flow space within the first current collector into a first subspace, and connects the inlet of the first current collector to the first subspace. This allows the inlet to connect to the inlet end of the first guide channel via the first subspace. Similarly, the blocking element separates the flow space within the second current collector into a second subspace, and connects the outlet of the second current collector to the second subspace. This allows the second guide channel to connect to the outlet of the second current collector via the second subspace. This allows the heat exchange medium to enter and exit from different current collectors, thus achieving a symmetrical pressure distribution of the heat exchange medium during the flow process and improving the uniformity of heat exchange with the battery cells.

[0037] A second aspect of this application provides an electrical device that includes a battery device as described in any of the above embodiments for providing electrical power.

[0038] In the technical solutions of this application embodiment, since the battery device in any of the above embodiments is included, the same beneficial effects can be achieved. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of a vehicle structure provided in an embodiment of this application;

[0040] Figure 2 This is an exploded schematic diagram of the battery device provided in the embodiments of this application;

[0041] Figure 3 This is a schematic diagram of the internal structure of the battery device provided in the embodiments of this application;

[0042] Figure 4 This is a side view schematic diagram of the heat exchange component provided in the embodiments of this application;

[0043] Figure 5 yes Figure 4 Schematic diagram of the cross section at point AA;

[0044] Figure 6 yes Figure 5 Schematic diagram of the cross-section at point B1-B2;

[0045] Figure 7 This is a schematic diagram of the first possible fit between the heat exchange component and the blocking component provided in the embodiments of this application;

[0046] Figure 8 This is an exploded view of the heat exchange component provided in the embodiments of this application;

[0047] Figure 9 This is a side view schematic diagram of the current collector provided in an embodiment of this application;

[0048] Figure 10 yes Figure 9 Schematic diagram of cross-section at CC;

[0049] Figure 11 This is a schematic diagram of the external structure of the current collector provided in an embodiment of this application;

[0050] Figure 12 This is a schematic diagram of a second type of mating between the heat exchange assembly and the blocking element provided in the embodiments of this application;

[0051] Figure 13 This is a schematic diagram of the cooperation between the blocking member and the sealing part provided in the embodiments of this application;

[0052] Figure 14 This is a schematic diagram of the cooperation between the blocking member and the partition plate provided in the embodiments of this application;

[0053] Figure 15 This is a schematic diagram of the concave-convex fit between the blocking member and the sealing part provided in the embodiments of this application.

[0054] It should be noted that the terms "first" and "second" mentioned above are only used to distinguish between different options and do not represent the degree of superiority or inferiority of the options or their priority in the implementation process.

[0055] Explanation of reference numerals in the attached figures

[0056] 1000 - Vehicle; 100 - Battery unit; 110 - Housing; 111 - First housing section; 112 - Second housing section; 120 - Battery cell assembly; 12 - Battery cell; 130 - Heat exchange assembly; a - Mating surface; a1 - First sub-surface; a2 - Second sub-surface; a3 - Recess; 131 - Channel; 131A - Flow channel; 131A1 - First flow channel; 131A2 - Second flow channel; 131B - Backup channel; 132 - Diverting space; 1321 - First subspace; 1322- Second subspace; 133- Heat exchange component; 1331- Main body; 1332- Partition plate; 1333- Sealing part; b- First protrusion; 134- Current collector; 134A- First current collector; c1- Inlet; d1- First drainage channel; 134B- Second current collector; c2- Outlet; d2- Second drainage channel; 140- Blocking component; 200- Controller; 300- Motor; X- First direction; Y- Second direction; Z- Third direction. Detailed Implementation

[0057] 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.

[0058] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0059] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" 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.

[0060] 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.

[0061] 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0062] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0063] 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0064] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0065] The following is a detailed description of this application.

[0066] With the promotion and popularization of the concept of green development, new energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, battery devices are being used more and more in the field of energy storage.

[0067] In existing battery systems, the battery device includes a housing, individual battery cells, and a heat exchange assembly. The individual battery cells and the heat exchange assembly are housed within the housing. The individual battery cells store and provide electrical energy, while the heat exchange assembly facilitates heat exchange with the individual battery cells, for example, cooling the individual battery cells. Specifically, the heat exchange assembly includes heat exchange components and current collectors. The heat exchange assembly has multiple flow channels arranged along a first direction for the flow of the heat exchange medium, with adjacent channels flowing in opposite directions. Current collectors are connected to opposite ends of the heat exchange components along a second direction. The multiple flow channels are connected together through the current collectors, allowing the heat exchange medium to achieve a quasi-S-shaped flow path within the heat exchange assembly, thereby facilitating heat exchange with the individual battery cells. Therefore, achieving a stable S-shaped flow of the heat exchange medium within the heat exchange assembly is currently an important research direction.

[0068] In related technologies, a water-proof structure is installed within the space of the collector, positioned between the upstream inlet and downstream outlet of an adjacent flow channel. This allows the heat exchange medium to flow in an "S"-shaped path between the flow channel and the collector. However, due to various factors in manufacturing and actual assembly, gaps may exist between the water-proof structure and the heat exchange components. Consequently, crossflow problems inevitably occur, meaning that some heat exchange medium will flow from the downstream outlet to the upstream inlet.

[0069] For example, in a type of heat exchange assembly, in addition to the flow guiding channels, there are also backup channels that are unusable after being sealed at both ends by sealing plates along the first direction between adjacent flow guiding channels. In this case, in related technologies, a water-proof structure is generally connected to the collector and the water-proof structure and the sealing plate are made to abut against each other to achieve an "S"-shaped flow of the heat exchange medium inside the heat exchange assembly. However, since there are manufacturing tolerance issues in the processing of both the sealing plate and the water-proof structure, it is easy for the sealing plate and the water-proof structure to fail to fit together, and then the gap between the sealing plate and the water-proof structure will allow crossflow.

[0070] For example, in another type of heat exchange component, the heat exchange component only has a flow channel inside. In this case, the relevant technology generally connects the water-proof structure to the current collector and makes the end face of the water-proof structure and the end of the flow channel of the heat exchange component abut against each other to achieve the "S" shaped direction of the heat exchange medium inside the heat exchange component. However, this will also have processing tolerance problems, resulting in a gap between the end face of the water-proof structure and the heat exchange component, and crossflow problems.

[0071] Based on this, this application provides a battery device, which includes at least one battery cell, a heat exchange assembly, and at least one blocking member. The heat exchange assembly is used for heat exchange with the battery cell. The heat exchange assembly has multiple channels and multiple flow-dividing spaces inside. The multiple channels are arranged sequentially along a first direction, and include multiple guide channels for the flow of heat exchange medium. The heat exchange medium in some of the guide channels flows in opposite directions. The multiple flow-dividing spaces are located at opposite ends of the multiple guide channels along a second direction. The inlet and outlet ends of each guide channel are respectively connected to the corresponding flow-dividing space. The multiple guide channels are connected through the flow-dividing spaces. At least a portion of the blocking member is accommodated within the flow-dividing space. A blocking member is used to seal between the upstream inlet end and the downstream outlet end of two guide channels with opposite flow directions. The blocking member is in a sealed fit with the heat exchange assembly. The first direction intersects the second direction.

[0072] With the above configuration, the battery cells are used to store or provide electrical energy, and the heat exchange components are used to exchange heat with the battery cells. For example, the components can cool the battery cells so that they are at a suitable operating temperature, ensuring that the battery cells can operate normally and stably.

[0073] The heat exchange assembly has multiple flow channels and multiple flow splitting spaces. Since the inlet and outlet of each flow channel are connected to the corresponding flow splitting space, and the heat exchange medium in some flow channels flows in opposite directions, and there is a blocking element between the upstream inlet and the downstream outlet of the flow channel with opposite flow directions, the multiple flow channels can be connected together in an "S"-shaped flow direction through the flow splitting space. In this way, during the process of the heat exchange medium flowing through multiple flow channels, the heat exchange medium can exchange heat with the battery cells through the heat exchange assembly to regulate the temperature of the battery cells.

[0074] Because the blocking component is sealed to the heat exchange assembly, the sealing tightness between the blocking component and the heat exchange assembly can be improved, thus enhancing the sealing effect and reducing the probability of the heat exchange medium flowing out from the downstream outlet end flowing back to the upstream inlet end. This ensures the structural reliability of the heat exchange assembly and allows the heat exchange medium to flow in multiple guide channels according to a predetermined flow path, ensuring the heat exchange stability of the heat exchange assembly and improving the reliability of the battery device.

[0075] The battery device provided in this application embodiment can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. This application embodiment also provides an electrical device including the aforementioned battery device for providing electrical energy. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., while spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0076] In the following embodiments, for ease of explanation, a vehicle is used as an example of the electrical equipment in one embodiment of this application.

[0077] Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. Figure 1 As shown, a battery device 100 is installed inside the vehicle 1000. The battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0078] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0079] Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application; the battery device 100 (Battery Apparatus) mentioned in the embodiments of this application includes multiple battery cell assemblies 120 for providing voltage and capacity. A battery cell assembly 120 may include multiple battery cells 12, which are connected in series, parallel, or mixed connections via busbars.

[0080] In some embodiments, the battery cell assembly 120 is typically formed by arranging multiple battery cells 12; as an example, the battery cell assembly 120 can be a battery module, which is formed by arranging and fixing multiple battery cells 12 into a single module. As an example, the battery module can be formed by bundling multiple battery cells 12 together with cable ties.

[0081] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which includes a housing 110 and one or more battery cell assemblies 120, the battery cell assemblies 120 being housed within a cavity.

[0082] As an example, the battery cell assembly 120 can be a battery module, which can be housed in the cavity by fixing the battery module in the cavity.

[0083] As an example, the battery cell assembly 120 can also be housed in the cavity by directly fixing multiple battery cells 12 to the cavity.

[0084] As an example, such as Figure 2 As shown, the housing 110 may include a first housing portion 111 and a second housing portion 112. The first housing portion 111 and the second housing portion 112 are fastened together, forming a closed space, or cavity, inside the housing 110 to house the battery cell assembly 120. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing portion 111 may be a top cover or a bottom plate.

[0085] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0086] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0087] In some embodiments, the battery cell is a square wound battery cell with a square shell. The electrode assembly is disposed inside the shell. The electrode assembly includes multiple electrodes, including a cathode, an anode, and a separator. The separator is disposed between the cathode and the anode, which can prevent short circuit of the positive anode and allow active ions to pass through.

[0088] In some examples, the outer casing can be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc.

[0089] In some embodiments, the plurality of electrodes includes an anode electrode and a cathode electrode with opposite polarities.

[0090] As an example, the anode electrode may include an anode current collector and an anode active material disposed on at least one surface of the anode current collector.

[0091] As an example, the anode current collector has two surfaces opposite each other in its own thickness direction, and the anode active material is disposed on either or both of the two opposite surfaces of the anode current collector.

[0092] As an example, the cathode current collector has two surfaces opposite each other in its own thickness direction, and the cathode active material is disposed on either or both of the two opposite surfaces of the cathode current collector.

[0093] In some embodiments, the anode electrode may be made of foamed metal. The foamed metal may be foamed nickel, foamed copper, foamed aluminum, or a foamed alloy, etc. In this case, the surface of the foamed metal may or may not contain an anode active material, although it can also contain one.

[0094] As an example, anolyte active material can be filled or / and deposited within the anolyte current collector.

[0095] In some embodiments, the cathode current collector may be made of aluminum, and the anode current collector may be made of copper.

[0096] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0097] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the cathode and the anode, serving both to transport ions and to isolate the anode and cathode.

[0098] In some embodiments, a pressure relief mechanism is provided on the housing. The pressure relief mechanism is used to release the internal pressure of the battery cell.

[0099] Below, refer to Figures 1 to 15 Some embodiments of this application will be described in detail.

[0100] Figure 1 This is a schematic diagram of a vehicle structure provided in an embodiment of this application. Figure 2 This is an exploded schematic diagram of the battery device provided in the embodiments of this application. Figure 3 This is a schematic diagram of the internal structure of the battery device provided in the embodiments of this application. Figure 4 This is a side view of the heat exchange component provided in the embodiments of this application. Figure 5 yes Figure 4Schematic diagram of cross-section at point AA. Figure 6 yes Figure 5 A schematic diagram of the cross-section at point B1-B2. Figure 7 This is a schematic diagram of the first type of mating of the heat exchange component and the blocking component provided in the embodiments of this application. Figure 8 This is an exploded view of the heat exchange component provided in the embodiments of this application. Figure 9 This is a side view of the current collector provided in an embodiment of this application. Figure 10 yes Figure 9 A cross-sectional view at point CC. Figure 11 This is a schematic diagram of the external structure of the current collector provided in an embodiment of this application. Figure 12 This is a schematic diagram of a second type of fit between the heat exchange component and the blocking element provided in the embodiments of this application. Figure 13 This is a schematic diagram of the cooperation between the blocking member and the sealing part provided in the embodiments of this application. Figure 14 This is a schematic diagram of the cooperation between the blocking member and the partition plate provided in the embodiments of this application. Figure 15 This is a schematic diagram of the concave-convex fit between the blocking member and the sealing part provided in the embodiments of this application.

[0101] To more clearly describe and understand this application, this application introduces a first direction X, a second direction Y, and a third direction Z. The first direction X, the second direction Y, and the third direction Z intersect each other. For ease of understanding, this application will use the example of the first direction X, the second direction Y, and the third direction Z being perpendicular to each other. For example, when the battery cell 12 is a square battery cell 12, the first direction X can be the height direction of the battery cell 12, the second direction Y can be the width direction of the battery cell 12, and the third direction Z can be the thickness direction of the battery cell 12.

[0102] Based on this, such as Figures 3-7 As shown, this application provides a battery device 100, which includes at least one battery cell 12, a heat exchange assembly 130, and at least one blocking member 140, as... Figure 3 As shown, the heat exchange assembly 130 is used for heat exchange with the battery cell 12; as Figure 4 , Figure 5 As shown, the heat exchange assembly 130 has multiple channels 131 and multiple distribution spaces 132 inside. The multiple channels 131 are arranged sequentially along the first direction X, as follows: Figure 6 , Figure 7As shown, the multiple channels 131 include multiple flow guide channels 131A for supplying heat exchange medium flow. The inlet and outlet ends of some flow guide channels 131A are arranged in opposite directions along the second direction Y. Multiple flow splitting spaces 132 are located at opposite ends of the multiple flow guide channels 131A along the second direction Y. The inlet and outlet ends of each flow guide channel 131A are respectively connected to the corresponding flow splitting space 132. The multiple flow guide channels 131A are connected via the flow splitting spaces 132. At least a portion of the blocking member 140 is accommodated within the flow splitting space 132. The blocking member 140 is used to seal between the upstream inlet end and the downstream outlet end of the flow guide channels 131A with opposite flow directions. The blocking member 140 is in a sealed fit with the heat exchange assembly 130. The first direction X intersects the second direction Y.

[0103] It is understandable that the heat exchange component 130 exchanges heat with the battery cell 12, which can be to cool or heat the battery cell 12, depending on the specific application requirements. The material of the heat exchange component 130 can be a thermally conductive material, such as aluminum, copper, or a phase change material, and the heat exchange medium can be a liquid such as water or a refrigerant, or air.

[0104] Among them, channel 131 can be a pen-shaped direct current channel extending along the second direction Y, which facilitates actual processing and manufacturing.

[0105] It should be explained that the inlet end of the flow guide channel 131A is the port for the heat exchange medium to flow in, and the outlet end of the flow guide channel 131A is the port for the heat exchange medium to flow out. The opposite arrangement of the inlet and outlet ends of adjacent flow guide channels 131A along the second direction Y means that the flow paths of the heat exchange medium in adjacent flow guide channels 131A along the second direction Y are opposite. With this arrangement, and in cooperation with the blocking member 140, the heat exchange medium can flow in a bent (S-shaped) path within the heat exchange assembly 130. The upstream and downstream of the upstream inlet end and the downstream outlet end of the two flow guide channels 131A with opposite flow directions are defined according to the order in which the heat exchange medium flows through the flow guide channels 131A. Specifically, along the flow direction of the heat exchange medium, the flow guide channel 131A that is passed through first is located upstream, and the flow guide channel 131A that is passed through later is located downstream.

[0106] In some examples, along the second direction Y, an inlet c1 and an outlet c2 can be respectively set in the flow distribution space 132 on one side of the flow channel 131A, while no inlet c1 or outlet c2 is set in the flow distribution space 132 on the other side of the flow channel 131A, which only serves as a connection. Then, the external heat exchange medium can be introduced into the flow distribution space 132 by using the inlet c1. Then the heat exchange medium will flow through multiple flow channels 131A and return to the flow distribution space 132, and then be discharged through the outlet c2.

[0107] For example, there are two flow channels 131A. In this case, the blocking element 140 can be installed only in one flow distribution space 132.

[0108] For example, if the number of flow channels 131A is greater than or equal to four, then a blocking member 140 can be set in the flow distribution space 132 on both sides respectively. The number of blocking members 140 can be determined according to the number of flow channels 131A.

[0109] In other examples, such as Figure 6 As shown, along the second direction Y, an inlet c1 can be set in the flow distribution space 132 on one side of the flow guide channel 131A, and an outlet c2 can be set in the flow distribution space 132 on the other side. The external heat exchange medium is introduced into the flow distribution space 132 on one side by using the inlet c1. Then the heat exchange medium will flow through multiple flow guide channels 131A and return to the flow distribution space 132 on the other side, and then be discharged through the outlet c2 on the other side. In this case, a blocking member 140 can be set in the flow distribution space 132 on both sides respectively. The number of blocking members 140 can be determined according to the number of flow guide channels 131A.

[0110] In some examples, such as Figure 3 As shown, the battery device 100 also includes a housing 110, and a plurality of battery cells 12 are arranged along a third direction Z to form a battery cell assembly 120. The battery cell assembly 120 is housed within the housing 110. Along the third direction Z, a heat exchange assembly 130 is located between adjacent battery cells 12 or between a battery cell 12 and the inner wall of the housing 110. Along the first direction X, the battery cell assembly 120 and the heat exchange assembly 130 can be supported within the housing 110. In this way, along the third direction Z, the heat exchange assembly 130 can dissipate heat from at least one side of the battery cell 12, and the heat exchange effect between the heat exchange assembly 130 and the battery cell 12 is improved.

[0111] In some examples, the sealing fit between the barrier 140 and the heat exchange assembly 130 can be achieved by the barrier 140 and the heat exchange assembly 130 through elastic abutment, or by the concave-convex fit to increase the permeation path of the heat exchange medium. The specific structure will be described in detail later.

[0112] With the above configuration, the battery cell 12 is used to store or provide electrical energy, and the heat exchange component 130 is used to exchange heat with the battery cell 12. For example, it can cool down the battery cell 12 so that the battery cell 12 is at a suitable operating temperature, ensuring that the battery cell 12 can work normally and stably.

[0113] The heat exchange assembly 130 has multiple flow channels 131A and multiple flow splitting spaces 132. Since the inlet and outlet ends of each flow channel 131A are connected to the corresponding flow splitting space 132, and the heat exchange medium in some flow channels 131A flows in opposite directions, and the upstream inlet end and the downstream outlet end of the flow channel 131A with opposite flow direction are blocked by a blocking element 140, the multiple flow channels 131A can be connected together in an "S"-shaped flow direction through the flow splitting space 132. In this way, during the process of heat exchange medium flowing through multiple flow channels 131A, the heat exchange medium can exchange heat with the battery cell 12 through the heat exchange assembly 130 to regulate the temperature of the battery cell 12.

[0114] Since the blocking member 140 is sealed to the heat exchange assembly 130, the sealing tightness between the blocking member 140 and the heat exchange assembly 130 can be improved, thereby improving the sealing effect and sealing performance. This reduces the probability of the heat exchange medium flowing out from the downstream outlet end flowing into the upstream inlet end, ensuring the structural reliability of the heat exchange assembly 130. It also allows the heat exchange medium to flow in multiple guide channels 131A according to a predetermined flow path, ensuring the heat exchange stability of the heat exchange assembly 130 and improving the reliability of the battery device 100.

[0115] To form the flow channel 131A and the flow distribution space 132, space can be directly cut out inside the heat exchange assembly 130. Alternatively, the heat exchange assembly 130 can be divided into a heat exchange component 133 and a collector 134, so that the flow channel 131A is formed in the heat exchange component 133 and the flow distribution space 132 is formed in the collector 134. Details are described below.

[0116] In some embodiments of this application, such as Figures 6-11 As shown, the heat exchange assembly 130 includes a connected heat exchange component 133 and two current collectors 134. The heat exchange component 133 has multiple flow channels 131A inside. The inlet and outlet ends of the flow channels 131A are located on two opposite end faces of the heat exchange component 133 along the second direction Y. The two opposite end faces of the heat exchange component 133 and different current collectors 134 enclose a flow splitting space 132. The blocking member 140 is sealed to the heat exchange component 133 and / or the current collectors 134.

[0117] It is understandable that the inlet and outlet ends of the flow guide channel 131A are located on two opposite end faces of the heat exchange component 133 along the second direction Y, meaning that the flow guide channel 131A passes through the two opposite end faces of the heat exchange component 133 along the second direction Y, so that the inlet and outlet ends of the flow guide channel 131A are located on two opposite end faces of the heat exchange component 133.

[0118] In some examples, such as Figures 8-11 As shown, the current collector 134 has a recessed space on the side facing the heat exchange component 133, so that the two end faces of the heat exchange component 133 are respectively inserted into the recessed space of the current collector 134 on the corresponding side and sealed with the inner wall of the recessed space to form a flow distribution space 132. Since the inlet and outlet ends of the flow guide channel 131A are located on the end face of the heat exchange component 133, while forming the flow distribution space 132, the inlet and outlet ends of the flow guide channel 131A are connected to the flow distribution space 132 on the corresponding side, which can improve the convenience of assembly and installation.

[0119] The sealing fit between the blocking member 140 and the heat exchange component 133 and / or the current collector 134 can be as follows: the blocking member 140 is connected to the current collector 134, and then the blocking member 140 and the sealing fit of the heat exchange component 133 are sealed together; or, the blocking member 140 is connected to the heat exchange component 133, and the sealing fit of the blocking member 140 and the current collector 134 are sealed together; or, the blocking member 140 and the sealing fit of the heat exchange component 133 and the current collector 134 are both sealed together.

[0120] In some examples, the heat exchange component 133 performs a heat exchange function. The material of the heat exchange component 133 is a thermally conductive material, such as copper, aluminum, or a phase change material. The heat exchange component 133 contacts the battery cell 12 to exchange heat.

[0121] With the above configuration, the flow guiding channel 131A is formed inside the heat exchange component 133. Since the two opposite end faces of the heat exchange component 133 and different current collectors 134 respectively enclose a flow splitting space 132, and the inlet and outlet ends of the flow guiding channel 131A are located on the two opposite end faces of the heat exchange component 133, multiple flow guiding channels 131A can be connected through the flow splitting space 132. Due to the configuration of the heat exchange component 133 and the current collectors 134, the formation of the flow guiding channel 131A and the flow splitting space 132 can be facilitated, improving the ease of processing. The sealing fit between the blocking member 140 and the heat exchange component 133 and / or the current collector 134 can still improve the effect of the blocking member 140 in separating the upstream inlet end and the downstream outlet end, improve the structural reliability of the heat exchange component 130, ensure the stability of the heat exchange of the heat exchange component 130, and improve the reliability of the battery device 100.

[0122] In some embodiments of this application, such as Figure 6 , Figure 7 , Figure 12As shown, the end face of the heat exchange component 133 includes a mating surface a. A mating surface a is present between the upstream inlet end and the downstream outlet end in the flow-directing channel 131A, and a blocking member 140 is connected to the collector 134 and is sealed to the mating surface a along the second direction Y.

[0123] It is understood that the number of mating surfaces a is determined based on the number of flow channels 131A. For example, if there are two flow channels 131A, then there is only one mating surface a. For example, if there are three flow channels 131A, and the flow directions of each adjacent flow channel 131A are opposite along the first direction X, then there are two mating surfaces a, which are located in the flow distribution spaces 132 on opposite sides of the heat exchange component 133 along the second direction Y.

[0124] With the above configuration, the blocking member 140 and the mating surface a on the end face of the heat exchange component 133 are sealed together to separate the upstream inlet end and the downstream outlet end, thereby reducing the probability of crossflow. Since the blocking member 140 is connected to the current collector 134, but does not have a direct connection with the heat exchange component 133, when the current collector 134 is installed to the heat exchange component 133, the formation of the flow distribution space 132 and the separation effect of the blocking member 140 can be achieved simultaneously, improving the ease of installation.

[0125] The formation of mating surface a can be varied and needs to be determined according to the type of heat exchange component 133. A detailed description follows.

[0126] In some embodiments of this application, such as Figure 12 As shown, the heat exchange component 133 includes a main body 1331 and a plurality of partition plates 1332. The main body 1331 has an accommodating space that extends through the main body 1331 to opposite ends along the second direction Y. The plurality of partition plates 1332 are spaced apart in the accommodating space along the first direction X. The partition plates 1332 extend along the second direction Y to divide the accommodating space into a plurality of channels 131. All channels 131 are flow guiding channels 131A. The end faces of some partition plates 1332 are configured as mating surfaces a.

[0127] In some examples, the main body 1331 is a flat square plate structure with the thickness direction of the square plate in the third direction Z. The accommodating space is a cubic space that matches the square plate. The partition plate 1332 is accommodated within the accommodating space to divide the accommodating space into multiple channels 131. Since the heat exchange components 133 are generally sandwiched between the large surfaces of different battery cells 12 along the third direction Z, the space utilization rate along the third direction Z inside the housing 110 can be improved by controlling the dimensions of the main body 1331 along the third direction Z.

[0128] The main body 1331 and the partition plate 1332 can be integral sheet metal structures, or the main body 1331 and the partition plate 1332 can be separate structures. After the main body 1331 and the partition plate 1332 are processed, they can be connected together by any suitable method such as welding, gluing or fastener connection.

[0129] With the above configuration, the partition plate 1332 divides the space inside the main body 1331 to form a heat exchange component 133 with channels 131. Since all channels 131 are flow guiding channels 131A, the utilization rate of the accommodating space is improved. Within a certain volume of accommodating space, more flow guiding channels 131A can be provided, allowing the heat exchange medium to flow through a longer path and improving heat exchange efficiency. In this case, the end faces of some partition plates 1332 form mating surfaces a to form a sealing fit with the blocking member 140.

[0130] In other embodiments of this application, such as Figure 6 , Figure 7 As shown, the heat exchange component 133 includes a main body 1331, a plurality of partition plates 1332, and a blocking part 1333. The main body 1331 has an accommodating space extending through both ends of the main body 1331 along a second direction Y. The plurality of partition plates 1332 are spaced apart in the accommodating space along a first direction X. The partition plates 1332 extend along the second direction Y to divide the accommodating space into a plurality of channels 131. The blocking part 1333 blocks the two ends of some channels 131 along the second direction Y to form a spare channel 131B, and the remaining channels 131 form a flow guiding channel 131A. Along the first direction X, the spare channel 131B is located between two flow guiding channels 131A with opposite flow directions. At least a portion of the mating surface a is located on the side of the blocking part 1333 opposite to the flow dividing space 132.

[0131] In other words, if the blocking part 1333 is located between the upstream inlet end and the downstream outlet end in the flow channel 131A with opposite flow direction, then the mating surface a can be located at least partially on the blocking part 1333.

[0132] Wherein, at least a portion of the mating surface a is located on the side opposite to the blocking part 1333 and the diversion space 132, or it can be understood that at least a portion of the mating surface a is located on the side opposite to the blocking part 1333 and the diversion channel 131A.

[0133] In addition, the spare channel 131B will be introduced. After the main body 1331 and the partition plate 1332 are processed, the number of channels 131 formed by the partition plate 1332 is relatively large. In actual use, it is not necessary to use so many channels 131 as flow channels 131A. Therefore, the blocking part 1333 is used to block part of the channels 131 to form a spare channel 131B. No heat exchange medium needs to flow in this spare channel 131B. This design can adjust the heat exchange capacity of the heat exchange component 133 to meet the needs of users in various scenarios.

[0134] In some examples, the blocking part 1333 can be located outside the channel 131, specifically at both ends of the partition plate 1332 along the second direction Y to block part of the channel 131, thereby forming a spare channel 131B. This design, with the blocking part 1333 located outside the channel 131, facilitates the connection between the blocking part 1333 and the main body 1331 and / or the partition plate 1332, simplifying actual installation operations.

[0135] In other examples, the blocking portion 1333 can also be disposed within the channel 131, specifically filling both ends of the channel 131 opposite to each other along the second direction Y to block part of the channel 131, thereby forming a spare channel 131B. In this design, the blocking portion 1333 is disposed within the channel 131, which improves space utilization.

[0136] The sealing part 1333 can be a thin sheet structure with the thickness direction of the thin sheet structure being the second direction Y. This allows for the control of the weight of the sealing part 1333 and the weight of the battery device 100 while achieving sealing.

[0137] In addition, the sealing part 1333 can be connected to at least one of the partition plate 1332 and the main body part 1331 by means of adhesive bonding or welding.

[0138] With the above configuration, the partition plate 1332 divides the space inside the main body 1331 to form a heat exchange component 133 with channels 131. Through the sealing cooperation of the sealing part 1333, part of the channels 131 forms a spare channel 131B, and another part forms a guide channel 131A. In this case, when the heat exchange component 133 is actually used, the position and number of the sealing parts 1333 can be adjusted as needed to increase the number of spare channels 131B to reduce the number of guide channels 131A and reduce the weight of the heat exchange component 133, or to reduce the number of spare channels 131B to increase the number of guide channels 131A and improve the heat exchange efficiency. This can improve the adaptability of the heat exchange component 133. In this case, at least a portion of the mating surface a can be located on the side opposite to the sealing part 1333 and the diversion space 132, so as to separate the upstream inlet end and the downstream outlet end using the blocking member 140.

[0139] In some embodiments of this application, such as Figure 13 As shown, mating surface a is completely located on the sealing part 1333. Or, as... Figure 14 As shown, the mating surface a includes a first sub-surface a1 and a second sub-surface a2. The first sub-surface a1 is located on the side opposite to the blocking part 1333 and the diversion space 132, and the second sub-surface a2 is located on the side opposite to the partition plate 1332 and the diversion space 132. The blocking member 140 is sealed to the first sub-surface a1 and / or the second sub-surface a2.

[0140] In other words, this embodiment can include the following situations: First, the mating surface a is located only on the sealing part 1333, and the blocking member 140 only seals with the mating surface a on the sealing part 1333. Second, the mating surface a includes a first sub-surface a1 and a second sub-surface a2, the first sub-surface a1 is located on the sealing part 1333, the second sub-surface a2 is located on the partition plate 1332, and the blocking member 140 abuts against the second sub-surface a2. Third, the blocking member 140 seals with both the first sub-surface a1 and the second sub-surface a2 simultaneously. Fourth, the blocking member 140 abuts against the first sub-surface a1.

[0141] It should be explained that the first and fourth methods can be different descriptions of the same embodiment, or they can be different embodiments. In different cases, the first method means that the blocking part 1333 completely covers the two opposite end faces of the partition plates 1332 on both sides of the channel 131 it blocks along the second direction Y. In this case, the mating surface a can only be located on the blocking part 1333. The fourth method means that the blocking part 1333 does not completely cover the two opposite end faces of the partition plates 1332 on both sides of the channel 131 it blocks along the second direction Y. Therefore, the second sub-surface a2, which is part of the mating surface a, can be located on the part of the partition plate 1332 that is not covered by the blocking part 1333.

[0142] With the above configuration, the mating surface a can be completely located on the sealing part 1333, thus improving the ease of mating between the blocking member 140 and the mating surface a. Alternatively, the mating surface a can also include two parts: a first sub-surface a1 and a second sub-surface a2. The first sub-surface a1 is located on the sealing part 1333, and the second sub-surface a2 is located on the partition plate 1332, so that the blocking member 140 can be sealed and mated with the sealing part 1333 and / or the partition plate 1332.

[0143] In some embodiments of this application, such as Figure 15 As shown, the mating surface a is recessed in the direction away from the diversion space 132 to form a recessed portion a3, and the blocking member 140 extends into the recessed portion a3 and seals with the recessed portion a3. Alternatively, the mating surface a protrudes in the direction toward the diversion space 132 to form a protruding portion, and the blocking member 140 has an inwardly recessed first groove, the protruding portion extends into the first groove and seals with the first groove.

[0144] In other words, this embodiment includes two scenarios: the mating surface a is recessed to form a recessed portion a3, and the blocking member 140 extends into the recessed portion a3 to achieve a sealing fit. Alternatively, the mating surface a protrudes outward to form a protruding portion, and the blocking member 140 has a first groove, with the protruding portion extending into the first groove to achieve a sealing fit.

[0145] In some examples, the recess a3 is recessed along the second direction Y, and the blocking member 140 extends into the recess a3 along the second direction Y. Alternatively, the protrusion protrudes along the second direction Y, the first recess is recessed along the second direction Y, and the protrusion extends into the first groove along the second direction Y.

[0146] The recessed portion a3 can be a regular shape, such as square or cylindrical, to facilitate its formation. Alternatively, the recessed portion a3 can also be an irregular shape. The protruding portion can be a regular shape, such as polygonal prism or cylinder, to facilitate its formation. Alternatively, the protruding portion can also be an irregular shape. The first groove can be a regular shape, such as square or cylindrical, to facilitate its formation. Alternatively, the first groove can also be an irregular shape.

[0147] It is understood that when the mating surface a is located on the sealing part 1333, the recessed part a3 or the protruding part may be located on the sealing part 1333. When the mating surface a includes a first sub-surface a1 and a second sub-surface a2, the recessed part a3 or the protruding part may be located on the partition plate 1332 and / or the sealing part 1333.

[0148] With the above configuration, the blocking member 140 extends into the recessed portion a3 to seal with it. The insertion fit between the recessed portion a3 and the blocking member 140 can serve a positioning function. Additionally, it can increase the contact area between the mating surface a and the blocking member 140, extending the flow path of the crossflow and improving sealing performance. Alternatively, the mating surface a can form a protrusion facing the diversion space 132, and the blocking member 140 can have an inwardly recessed first groove formed therein, allowing the protrusion to extend into the first groove. This can also serve a positioning function, increase the contact area between the mating surface a and the blocking member 140, extend the flow path of the crossflow, and improve sealing performance.

[0149] In some embodiments of this application, the blocking member 140 extends into the recess a3 and is elastically press-fitted with the recess a3. Alternatively, the protrusion extends into the first groove and is elastically press-fitted with the first groove.

[0150] It is understandable that the elastic interference fit between the blocking member 140 and the recessed portion a3 means that after the blocking member 140 extends into the recessed portion a3, the blocking member 140 and the recessed portion a3 are pressed together, at which time the blocking member 140 and / or the recessed portion a3 undergo elastic deformation to make the two tightly joined. Similarly, the elastic interference fit between the protrusion and the first groove means that after the protrusion extends into the first groove, the protrusion and the first groove are pressed together, at which time the protrusion and / or the first groove undergo elastic deformation to make the two tightly joined.

[0151] Understandably, the elastic interference fit requires that at least one of the blocking member 140 and the recess a3 be made of an elastic material, or that at least one of the protrusion and the first groove be made of an elastic material. The elastic material may have temperature resistance, wear resistance and heat exchange medium resistance. For example, the elastic material may be rubber, polyetheretherketone (PEEK), polyphenylene sulfide (PPS) or polyimide (PI), etc.

[0152] With the above configuration, the elastic interference fit between the blocking member 140 and the recessed portion a3 ensures a tight bond between their inner walls. This not only increases the permeation path of the heat exchange medium but also makes its permeation more difficult, further guaranteeing the seal between the blocking member 140 and the recessed portion a3. Alternatively, the elastic interference fit between the protrusion and the first groove ensures a tight bond between their inner walls. This not only increases the permeation path of the heat exchange medium but also makes its permeation more difficult, further guaranteeing the seal between the protrusion and the first groove.

[0153] In some embodiments of this application, such as Figure 3 As shown, the battery device 100 also includes a housing 110, and multiple battery cells 12 are arranged along a third direction Z to form a battery cell assembly 120. The battery cell assembly 120 is housed within the housing 110. Along the third direction Z, a heat exchange assembly 130 is located between adjacent battery cells 12 or between a battery cell 12 and the inner wall of the housing 110. Projected onto the same projection plane along the third direction Z, the projection of the recess a3 does not overlap with the projection of the battery cell assembly 120. The first direction X, the second direction Y, and the third direction Z intersect each other.

[0154] In some examples, the battery cell 12 is a square battery cell 12, and the third direction Z is the thickness direction of the battery cell 12, so that the heat exchange assembly 130 can perform heat exchange on at least one large surface of the battery cell 12.

[0155] In some examples, there are multiple heat exchange components 130, and along the third direction Z, there is a heat exchange component 130 between any two adjacent battery cells 12, which can ensure the uniformity and efficiency of heat exchange.

[0156] With the above settings, along the third direction Z, the heat exchange component 130 can dissipate heat to at least one side of the battery cell 12. Since the projection of the recessed portion a3 on the third direction Z does not overlap with the projection of the battery cell component 120, the depth of the recessed portion a3 along the second direction Y can be controlled, reducing the impact of the recessed portion a3 on the heat exchange component 133 and ensuring the heat exchange effect between the heat exchange component 133 and the battery cell 12.

[0157] In some embodiments of this application, such as Figure 15 As shown, the heat exchange component 133 includes a main body 1331, a plurality of partition plates 1332, and a sealing part 1333. The main body 1331 has an accommodating space extending through both ends of the main body 1331 along a second direction Y. The plurality of partition plates 1332 are spaced apart in the accommodating space along a first direction X. The partition plates 1332 extend along the second direction Y to divide the accommodating space into a plurality of channels 131. The sealing part 1333 blocks some of the channels 131 at both ends along the second direction Y to form a spare channel 131B, and the remaining channels 131 form a guide channel 131A. Along the first direction X, the spare channel 131B is located between two guide channels 131A with opposite flow directions. At least a portion of the mating surface a is located on the side of the sealing part 1333 opposite to the diversion space 132. The side of the sealing part 1333 away from the diversion space 132 has a first protrusion b protruding outward, and a recessed part a3 is recessed to partially enter the first protrusion b.

[0158] In some examples, the sealing part 1333 is a thin sheet structure. Along the thickness direction of the sealing part 1333, the side of the sealing part 1333 away from the diversion space 132 has an outwardly protruding first protrusion b. At the position of the first protrusion b, the thickness of the sealing part 1333 is relatively thick. By placing the recessed part a3 here, the structural strength of the sealing part 1333 can be guaranteed.

[0159] The first protrusion b can be a regular shape such as a polygonal prism or a cylinder, which facilitates its formation. Alternatively, the first protrusion b can also be an irregular shape.

[0160] With the above configuration, since the recessed portion a3 is recessed to partially enter the first protrusion b, the depth of the recessed portion a3 can be guaranteed, the contact area between the blocking member 140 and the recessed portion a3 can be guaranteed, and the sealing effect can be improved. At the same time, since the first protrusion b protrudes towards the side of the sealing portion 1333 away from the diversion space 132, the structural strength of the recessed portion a3 can also be guaranteed, taking into account the structural strength of the sealing portion 1333 and improving the durability of the sealing portion 1333.

[0161] In some embodiments of this application, at least a portion of the blocking member 140 is made of an elastic material, at least a portion of the heat exchange member 133 is made of a rigid material, the mating surface a is located at least a portion of the heat exchange member 133, and at least a portion of the blocking member 140 abuts against the mating surface a.

[0162] In some examples, the blocking member 140 includes a support and an elastic body, the elastic body being at least a portion of the blocking member 140, the support and the current collector 134 being connected, the elastic body being connected to the end of the support near the mating surface a and elastically mating with the mating surface a.

[0163] The elastomer can be attached to the support by injection molding or adhesive bonding. The elastomer material can have temperature resistance, wear resistance, and heat exchange medium resistance. For example, the elastomer material can be rubber, polyether ether ketone (PEEK), polyphenylene sulfide (PPS), or polyimide (PI), etc.

[0164] In some examples, if the mating surface a is located at the sealing portion 1333, then at least a portion of the heat exchange component 133 is the sealing portion 1333, which is made of a rigid material. If the mating surface a includes a first sub-surface a1 and a second sub-surface a2, with the first sub-surface a1 located at the sealing portion 1333 and the second sub-surface a2 located at the partition plate 1332, then at least a portion of the heat exchange component 1333 is at least a portion of the partition plate 1332 and / or the sealing portion 1333. At least a portion of the sealing portion 1333 and the partition plate 1332 are made of an elastic material.

[0165] Hard materials can include cemented carbide, etc.

[0166] With the above arrangement, at least a portion of the stop member 140 made of elastic material and at least a portion of the heat exchange member 133 made of rigid material abut against each other to achieve elastic fit, thus ensuring the stability of the abutment position and the stability of the seal.

[0167] In some embodiments of this application, at least a portion of the blocking member 140 is made of a rigid material, at least a portion of the heat exchange member 133 is made of an elastic material, the mating surface a is located at least a portion of the heat exchange member 133, and at least a portion of the blocking member 140 abuts against the mating surface a.

[0168] In some examples, if the mating surface a is located at the sealing portion 1333, then at least a portion of the heat exchange component 133 is the sealing portion 1333, and at least a portion of the sealing portion 1333 is made of an elastic material. If the mating surface a includes a first sub-surface a1 and a second sub-surface a2, with the first sub-surface a1 located at the sealing portion 1333 and the second sub-surface a2 located at the partition plate 1332, then at least a portion of the heat exchange component 1333 is at least a portion of the partition plate 1332 and / or the sealing portion 1333. At least a portion of the sealing portion 1333 and the partition plate 1332 are made of an elastic material.

[0169] For example, elastic material can be attached only to the surface of the blocking part 1333 and the diversion space 132 facing each other, and elastic material can be attached only to the surface of the partition plate 1332 facing the diversion space 132. This can ensure the structural strength of the blocking part 1333 and the partition plate 1332, while also satisfying the elastic fit.

[0170] With the above arrangement, at least a portion of the rigid material blocking member 140 and at least a portion of the elastic material heat exchange member 133 abut against each other at their mating surfaces a to achieve elastic fit, thus ensuring the stability of the abutment position and the stability of the seal.

[0171] In addition to the option where the blocking member 140 is connected to the current collector 134 and sealed with the heat exchange component 133, the blocking member 140 can also be connected to the end face of the heat exchange component 133 and sealed with the current collector 134.

[0172] In some embodiments of this application, the blocking member 140 is connected to the end face of the heat exchange component 133. The current collector 134 has a second groove located on the inner wall of the diversion space 132 and recessed in a direction away from the diversion space 132. The blocking member 140 extends into the second groove and seals with it. Alternatively, the blocking member 140 has an inwardly recessed third groove, and the current collector 134 has a second protrusion protruding into the diversion space 132. The second protrusion extends into the third groove and seals with it.

[0173] In other words, this embodiment includes the following two scenarios: the blocking member 140 is inserted into the second groove on the current collector 134; or the second protrusion on the current collector 134 is inserted into the third groove of the blocking member 140.

[0174] In some examples, the second groove is recessed along the second direction Y, and the stop 140 extends into the second groove along the second direction Y. Alternatively, the third groove is recessed along the second direction Y, and the second protrusion protrudes along the second direction Y, extending into the second groove along the second direction Y, which facilitates actual installation operations.

[0175] In some examples, the blocking member 140 extends into the second groove and is elastically interference-fitted with the second groove, which can improve the sealing effect of the blocking member 140 and the second groove.

[0176] In some examples, the second protrusion extends into the third groove and seals with it, thus improving the sealing effect of the second protrusion and the third groove.

[0177] With the above configuration, the blocking member 140 extends into the second groove to form a sealing engagement with a portion of the current collector 134 within the second groove. This insertion engagement of the blocking member 140 and the second groove serves a positioning function. Additionally, it increases the contact area between the blocking member 140 and the second groove, extending the flow path of the crossflow and improving sealing performance. Alternatively, the second protrusion on the current collector 134 extends into the third groove on the blocking member 140. This also provides a positioning function and increases the contact area between the second protrusion on the current collector 134 and the portion of the blocking member 140 within the third groove, extending the flow path of the crossflow and improving sealing performance.

[0178] In some embodiments of this application, such as Figure 6 As shown, the two current collectors 134 include a first current collector 134A and a second current collector 134B. A blocking member 140 is disposed within the diversion space 132 of the first current collector 134A to separate a first subspace 1321. The first current collector 134A has an inlet c1 communicating with the first subspace 1321. The blocking member 140 is disposed within the diversion space 132 of the second current collector 134B to separate a second subspace 1322. The second current collector 134B has an outlet c2 communicating with the second subspace 1322. Along the first direction X, multiple flow channels 131A include a first flow channel 131A1 and a second flow channel 131A2 located on the outermost side and arranged opposite to each other. The inlet c1 is connected to the first subspace 1321 and the inlet end of the first flow channel 131A1. The outlet end of the second flow channel 131A2 is connected to the second subspace 1322 and the outlet c2.

[0179] It is understandable that, in order to achieve the following: the inlet c1 is located in the first collector 134A and the outlet c2 is located in the second collector 134B, the flow direction of the first guide channel 131A1 and the second guide channel 131A2 should be the same along the second direction Y.

[0180] In some examples, such as Figure 6As shown, the first collector 134A also has a first flow channel d1 inside. One end of the first flow channel d1 is connected to the inlet c1, and the other end of the first flow channel d1 is connected to the first subspace 1321. The inlet c1 is connected to the first subspace 1321 via the first flow channel d1, and then connected to the inlet end of the first guide channel 131A1. By setting the first flow channel d1, the heat exchange medium entering from the inlet c1 can be easily guided.

[0181] In some examples, such as Figure 6 As shown, the second current collector 134B also has a second flow channel d2 inside. One end of the second flow channel d2 is connected to the outlet c2, and the other end of the second flow channel d2 is connected to the second subspace 1322. The outlet end of the second flow channel 131A2 is connected to the outlet c2 via the second subspace 1322 and the second flow channel d2. By setting the second flow channel d2, the heat exchange medium in the second subspace 1322 can be easily guided to flow to the outlet c2.

[0182] With the above configuration, the blocking member 140 separates the flow space 132 in the first current collector 134A into a first subspace 1321, and connects the inlet c1 on the first current collector 134A with the first subspace 1321, so that the inlet c1 connects to the inlet end of the first guide channel 131A1 via the first subspace 1321. The blocking member 140 separates the flow space 132 in the second current collector 134B into a second subspace 1322, and connects the outlet c2 on the second current collector 134B with the second subspace 1322, so that the second guide channel 131A2 connects to the outlet c2 on the second current collector 134B via the second subspace 1322. This allows the heat exchange medium to enter and exit from different current collectors 134, thereby achieving a symmetrical pressure distribution of the heat exchange medium during the flow process and improving the uniformity of heat exchange with the battery cell 12.

[0183] This application also provides an electrical device that includes a battery device 100 in any of the above embodiments for providing electrical energy.

[0184] In the technical solution of this application embodiment, since the battery device 100 in any of the above embodiments is included, the structural reliability of the heat exchange component 130 is guaranteed, and the heat exchange medium can flow in multiple guide channels 131A according to a predetermined flow path, thereby ensuring the heat exchange stability of the heat exchange component 130 and improving the reliability of the battery device 100.

[0185] To better understand this application, as follows: Figure 6 As shown, the present application will be described in a specific embodiment below.

[0186] The heat exchange assembly 130 includes a heat exchange component 133 and two current collectors 134. The heat exchange component 133 includes a main body 1331, eleven partition plates 1332, and six sealing sections 1333. The main body 1331 has an internal receiving space extending through both ends of the main body 1331 along the second direction Y. The eleven partition plates 1332 are spaced apart in the receiving space along the first direction X. The partition plates 1332 extend along the second direction Y to divide the receiving space into twelve channels 131. The heat exchange component 133 has three sealing sections 1333 at each end along the second direction Y. Figure 6 From top to bottom, the uppermost blocking part 1333 blocks the second to fourth channels 131 at their opposite ends along the second direction Y, forming three backup channels 131B. The middle blocking part 1333 blocks the seventh to ninth channels 131 at their opposite ends along the second direction Y, forming three backup channels 131B. The lowermost blocking part 1333 blocks the tenth and eleventh channels 131 at their opposite ends along the second direction Y, forming two backup channels 131B. The remaining first channel 131, fifth channel 131, sixth channel 131, and ninth channel 131 respectively form guiding channels 131A. The sealing part 1333 is made of hard material. A recess a3 is formed on the sealing part 1333 between the inlet end of the first guide channel 131A and the outlet end of the fifth guide channel 131A. A recess a3 is also formed on the sealing part 1333 between the inlet end of the sixth guide channel 131A and the outlet end of the ninth guide channel 131A.

[0187] The blocking member 140 is made by combining a support body and an elastic body. The first current collector 134A is internally connected to the integrally formed blocking member 140. The blocking member 140 protrudes along the second direction Y. When installing the first current collector 134A and the heat exchange component 133, the end of the heat exchange component 133 extends into the first current collector 134A on the corresponding side along the second direction Y. The blocking member 140 on the first current collector 134A extends into the recessed portion a3 formed on the sealing portion 1333 located between the inlet end of the first flow channel 131A and the outlet end of the fifth flow channel 131A. The elastic body and the inner wall surface of the recessed portion a3 are elastically fitted, and a diversion space 132 is formed at the same time. Similarly, an integrally formed blocking member 140 is connected inside the second current collector 134B. The blocking member 140 protrudes along the second direction Y. When installing the second current collector 134B and the heat exchange component 133, the end of the heat exchange component 133 extends into the interior of the second current collector 134B on the corresponding side along the second direction Y. The blocking member 140 on the second current collector 134B extends into the recess a3 formed on the sealing portion 1333 located between the inlet end of the sixth flow channel 131A and the outlet end of the ninth flow channel 131A. The elastic body and the inner wall surface of the recess a3 elastically fit together, forming a flow splitting space 132. This completes the assembly of the heat exchange component 130. Finally, along the third direction Z, the heat exchange component 130 is installed between adjacent battery cells 12 or between battery cells 12 and the housing 110.

[0188] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: At least one battery cell; A heat exchange assembly for heat exchange with the battery cells; The heat exchange assembly has multiple channels and multiple flow distribution spaces inside. The multiple channels are arranged sequentially along a first direction. The multiple channels include multiple flow guide channels for supplying heat exchange medium flow. The heat exchange medium in some of the flow guide channels flows in opposite directions. The multiple flow distribution spaces are located at opposite ends of the multiple flow guide channels along a second direction. The inlet and outlet ends of each flow guide channel are respectively connected to the flow distribution space on the corresponding side. At least one blocking element, at least a portion of which is housed within the diversion space, is used to block the flow between the upstream inlet and the downstream outlet of two flow channels flowing in opposite directions, and the blocking element is in a sealed fit with the heat exchange assembly. Wherein, the first direction intersects with the second direction.

2. The battery device according to claim 1, characterized in that, The heat exchange assembly includes a connected heat exchange component and two current collectors. The heat exchange component has multiple flow guiding channels inside. The inlet and outlet ends of the flow guiding channels are located on two opposite end faces of the heat exchange component along the second direction. The two opposite end faces of the heat exchange component and different current collectors respectively enclose the flow splitting space. The blocking element is sealed in conjunction with the heat exchange component and / or the current collector.

3. The battery device according to claim 2, characterized in that, The end face of the heat exchange component includes a mating surface; the mating surface is located between the upstream inlet end and the downstream outlet end of the two flow channels flowing in opposite directions, and the blocking member is connected to the current collector and is sealed to the mating surface along the second direction.

4. The battery device according to claim 3, characterized in that, The heat exchange component includes a main body and a plurality of partition plates. The main body has an accommodating space extending through the main body to opposite ends along the second direction. The plurality of partition plates are spaced apart in the accommodating space along the first direction. The partition plates extend along the second direction to divide the accommodating space into the plurality of channels, all of which are flow guiding channels. The end face of a portion of the partition plate forms the mating surface.

5. The battery device according to claim 3, characterized in that, The heat exchange component includes a main body, multiple partition plates, and a sealing part. The main body has an internal accommodating space extending through the main body at opposite ends along the second direction. The multiple partition plates are spaced apart within the accommodating space along the first direction and extend along the second direction to divide the accommodating space into multiple channels. The sealing part blocks the opposite ends of the channels along the second direction to form a spare channel, and the remaining part of the channel forms the flow guiding channel. Along the first direction, the backup channel is located between the two flow channels with opposite flow directions; At least a portion of the mating surface is located on the side of the blocking portion opposite to the diversion space.

6. The battery device according to claim 5, characterized in that, The mating surface is completely located on the sealing portion; or... The mating surfaces include a first sub-surface and a second sub-surface. The first sub-surface is located on the side of the blocking portion opposite to the diversion space, and the second sub-surface is located on the side of the partition plate opposite to the diversion space. The blocking member is in a sealing fit with the first sub-surface and / or the second sub-surface.

7. The battery device according to any one of claims 3-6, characterized in that, The mating surface is recessed in the direction away from the diversion space to form a recessed portion, and the blocking member extends into the recessed portion and seals with the recessed portion; or, The mating surface protrudes in the direction of the diversion space to form a protrusion, and the blocking member forms an inwardly recessed first groove. The protrusion extends into the first groove and seals with the first groove.

8. The battery device according to claim 7, characterized in that, The blocking member extends into the recessed portion and elastically presses against the recessed portion; or... The protrusion extends into the first groove and is elastically pressurized with the first groove.

9. The battery device according to claim 7, characterized in that, The battery device further includes a housing, and there are multiple battery cells arranged along a third direction to form a battery cell assembly. The battery cell assembly is housed in the housing. Along the third direction, the heat exchange assembly is located between adjacent battery cells or between a battery cell and the inner wall of the housing. Projecting along the third direction onto the same projection plane, the projection of the recessed portion does not overlap with the projection of the battery cell assembly; The first direction, the second direction, and the third direction intersect each other.

10. The battery device according to claim 7, characterized in that, The blocking part has a first protrusion protruding outward on the side opposite to the diversion space, and the recessed part is recessed to partially enter the first protrusion.

11. The battery device according to any one of claims 3-6, characterized in that, At least a portion of the blocking member is made of an elastic material, at least a portion of the heat exchange component is made of a rigid material, the mating surface is located at least a portion of the heat exchange component, and at least a portion of the blocking member abuts against the mating surface.

12. The battery device according to any one of claims 3-6, characterized in that, At least a portion of the blocking member is made of a rigid material, at least a portion of the heat exchange component is made of an elastic material, the mating surface is located at least a portion of the heat exchange component, and at least a portion of the blocking member abuts against the mating surface.

13. The battery device according to claim 2, characterized in that, The blocking element is connected to the end face of the heat exchange component; The current collector has a second groove located on the inner wall of the diversion space and recessed in a direction away from the diversion space. The blocking member extends into the second groove and is sealed to the second groove. or, The blocking member has an inwardly recessed third groove, and the current collector has a second protrusion protruding into the diversion space. The second protrusion extends into the third groove and seals with it.

14. The battery device according to claim 2, characterized in that, The two current collectors include a first current collector and a second current collector. The blocking member is disposed in the diversion space of the first current collector to separate a first subspace. The first current collector has an inlet communicating with the first subspace. The blocking member is disposed in the diversion space of the second current collector to separate a second subspace. The second current collector has an outlet communicating with the second subspace. Along the first direction, the plurality of flow channels include a first flow channel and a second flow channel located on the outermost side and arranged opposite to each other. The inlet is connected to the inlet end of the first flow channel via the first subspace, and the outlet end of the second flow channel is connected to the outlet via the second subspace.

15. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-14 for providing electrical energy.

Images