Battery device, energy storage device and electric device

Abstract

Provided in the embodiments of the present disclosure are a battery device, an energy storage device and an electric device. The battery device comprises a case assembly, a battery cell assembly and a heat exchange assembly, wherein an accommodating cavity is provided inside the case assembly, the battery cell assembly is arranged in the accommodating cavity, and the heat exchange assembly is arranged in the case assembly; and the heat exchange assembly comprises a heat exchange member and an adapter member, wherein the heat exchange member is connected to the adapter member, the adapter member is flexibly connected to at least part of the case assembly, and at least one medium flow channel is provided inside the heat exchange member and same is configured to conduct a heat exchange medium, which is configured to perform heat exchange with the battery cell assembly, and the medium flow channel is in communication with the outside of the case assembly by means of the adapter member.

Description

Battery devices, energy storage devices and electrical appliances

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 202411505010.0, filed on October 25, 2024, entitled “Battery Device, Energy Storage Device and Electricity Consumption Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of battery technology, and in particular to a battery device, an energy storage device, and an electrical device. Background Technology

[0004] This section is intended to provide background or context for embodiments of this disclosure. The description herein is not intended to imply that it is prior art simply because it is included in this section.

[0005] In new energy technologies incorporating battery devices, these devices can provide all or part of the power. During operation, the individual battery cells within the device generate heat. Excessive heat can adversely affect the performance and lifespan of the battery device. Therefore, effectively dissipating heat from the individual battery cells has become an important research direction in this field. Related technologies utilize heat exchange components to exchange heat between the individual battery cells. However, the inlet and outlet of these heat exchange components are connected to external pipelines via connecting pipes, resulting in a large space requirement and a non-compact structure for the battery device. Summary of the Invention

[0006] In view of this, the present disclosure aims to provide a battery device, an energy storage device, and an electrical device that can improve the structural compactness of the battery device.

[0007] Therefore, a first aspect of the present disclosure provides a battery device, comprising:

[0008] The enclosure assembly has an internal receiving cavity;

[0009] A battery cell assembly is disposed within a receiving cavity;

[0010] A heat exchange assembly is disposed within a housing assembly; wherein the heat exchange assembly includes a heat exchange element and an adapter, the heat exchange element is connected to the adapter, and the adapter is flexibly connected to at least a portion of the housing assembly; the heat exchange element has at least one medium flow channel inside, the at least one medium flow channel is used to conduct heat exchange medium, the heat exchange medium is used to exchange heat with the battery cell assembly, and the medium flow channel is connected to the outside of the housing assembly through the adapter.

[0011] The battery device provided in this disclosure includes a housing assembly, battery cell assemblies, and a heat exchange assembly. The battery cell assemblies are disposed within the housing cavity of the housing assembly, which protects them. The heat exchange assembly exchanges heat with the battery cell assemblies. Furthermore, by flexibly connecting the adapter to at least a portion of the housing assembly—that is, by allowing axial extension, folding, and vertical displacement between the adapter and the housing assembly—assembly tolerances are effectively absorbed, improving assembly efficiency and connection reliability. This eliminates the need for additional components, reducing the number of parts, lowering costs and space requirements, increasing the compactness of the battery device, and ultimately improving its energy density.

[0012] In some embodiments, the enclosure assembly includes an enclosure body, a mounting section, and a flexible section, wherein the mounting section is flexibly connected to the enclosure body via the flexible section, and an adapter is connected to the mounting section.

[0013] This helps to absorb the assembly tolerances between the adapter and the housing assembly, thereby improving the assembly efficiency and connection reliability between the adapter and the housing assembly.

[0014] In some embodiments, the flexible portion is arranged around the periphery of the mounting portion.

[0015] This makes it easier to connect the flexible part and the box body in a way that allows for axial expansion, contraction, and displacement along the vertical axis.

[0016] In some embodiments, the housing assembly also includes a connector, through which the adapter is connected to the mounting portion.

[0017] In this embodiment, by providing a connector, the adapter can be connected to the mounting part through the connector, which helps to improve the connection efficiency and reliability between the adapter and the mounting part.

[0018] In some embodiments, the adapter and the connector are flexibly connected.

[0019] In this embodiment, by setting the adapter and the connector to a flexible connection, and by flexibly connecting the mounting part to the box body through the flexible part, it is further beneficial to absorb the assembly tolerance between the adapter and the box assembly, thereby further improving the assembly efficiency and connection reliability between the adapter and the box assembly.

[0020] In some embodiments, the connector includes a connecting body and a connecting pipe, the connecting body being connected to the mounting portion, and the adapter communicating with the connecting pipe;

[0021] The connecting pipe is flexibly connected to the connecting body; and / or,

[0022] The adapter is flexibly connected to the connecting pipe.

[0023] In this embodiment, by providing a connector, the adapter can be connected to the mounting part through the connector, which helps to improve the connection efficiency and reliability between the adapter and the mounting part.

[0024] By configuring the connector to include a connecting body and a connecting pipe, the connecting body is used to connect with the mounting part, and the connecting pipe is used to communicate with the adapter, thus improving the connection reliability between the connector and the housing assembly, as well as the connection reliability between the connector and the adapter.

[0025] By setting the adapter and connector to a flexible connection, and by flexibly connecting the mounting part to the housing body through the flexible part, it is further beneficial to absorb the assembly tolerance between the adapter and the housing assembly, thereby further improving the assembly efficiency and connection reliability between the adapter and the housing assembly.

[0026] In some embodiments, the connecting body includes a flange and a flexible connecting ring. The flange is connected to the mounting part. The flange is provided with a connecting hole. The flexible connecting ring is sleeved on the connecting pipe, and the connecting pipe is flexibly connected to the connecting hole through the flexible connecting ring.

[0027] In this embodiment, by configuring the connecting body to include a flange and a flexible connecting ring, the flange is used to connect with the mounting part. This not only improves the connection reliability between the connecting body and the housing assembly, but also facilitates the flexible connection of the connecting pipe to the connecting hole of the flange through the flexible connecting ring. Thus, through multiple flexible connections, it is further beneficial to absorb the assembly tolerance between the adapter and the housing assembly, thereby further improving the assembly efficiency and connection reliability between the adapter and the housing assembly.

[0028] In some embodiments, the connecting pipe includes a first connecting pipe and a second connecting pipe, the first connecting pipe being flexibly connected to the connecting hole via a flexible connecting ring, and the second connecting pipe being flexibly connected to the first connecting pipe.

[0029] In this embodiment, by configuring the connecting pipe to include a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively connected to the flange and the adapter, and the second connecting pipe is flexibly connected to the first connecting pipe, it is beneficial to improve the connection reliability between the connecting pipe and the flange and the adapter, and further beneficial to absorb the assembly tolerance between the flange and the adapter, thereby further improving the assembly efficiency and connection reliability between the flange and the adapter.

[0030] In some embodiments, the second connecting pipe includes a flexible connecting pipe and a rigid connecting pipe, with the rigid connecting pipe sleeved around the outer periphery of the flexible connecting pipe, or the rigid connecting pipe connected to one end of the flexible connecting pipe along the axial direction, and the first connecting pipe and the adapter both being flexibly connected to the flexible connecting pipe.

[0031] The flexible connecting pipe can be flexibly connected to the first connecting pipe and the adapter, and can also play a sealing role, thereby improving the connection reliability between the flexible connecting pipe and the first connecting pipe and the adapter.

[0032] Rigid connecting pipes are used to provide structural strength. They are fitted around the flexible connecting pipe, thus providing a certain degree of constraint.

[0033] In some embodiments, the connecting tube is constructed by forming a flexible connecting tube and a rigid connecting tube through two-color injection molding.

[0034] This helps reduce the number of parts, improve assembly efficiency, and enhance the structural strength and reliability of the connecting pipe.

[0035] In some embodiments, the outer side wall of the first connecting tube protrudes to form a protrusion that contacts the flexible connecting tube.

[0036] In this embodiment, the first connecting pipe is provided with a protrusion that contacts the flexible connecting pipe, which helps to improve the sealing performance between the first connecting pipe and the flexible connecting pipe and reduces the possibility of the first connecting pipe coming out of the flexible connecting pipe.

[0037] In some embodiments, the flexible connecting tube is made of rubber.

[0038] In some embodiments, the elastic modulus of the flexible connecting tube is 0.1 MPa-10000 MPa.

[0039] In this embodiment, by setting the elastic modulus of the flexible connecting pipe to 0.1MPa-10000MPa, the flexible connecting pipe has a certain structural strength, which improves the reliability of the connecting pipe, and also has a certain deformation capacity. This can improve the fit between the flexible connecting pipe and the adapter and the first connecting pipe, thereby improving the sealing performance between the flexible connecting pipe and the first connecting pipe and the adapter.

[0040] In some embodiments, the wall thickness of the flexible connecting tube is less than that of the rigid connecting tube.

[0041] In some embodiments, the elastic modulus of the flexible connecting ring is 0.1 MPa-10000 MPa.

[0042] In some embodiments, a portion of the flexible portion is recessed to form a groove, which extends along the periphery of the mounting portion.

[0043] In this embodiment, by recessing a portion of the flexible part to form a groove, the area of ​​the flexible part located in the groove is more prone to deformation.

[0044] In some embodiments, the elastic modulus of the flexible part is 0.1 MPa-10000 MPa.

[0045] In some embodiments, the housing body is made of metal, while the mounting portion and flexible portion are made of non-metallic materials.

[0046] In some embodiments, the connecting pipe is a straight pipe.

[0047] In some embodiments, the adapter includes a first adapter segment and a second adapter segment. A first end of the first adapter segment is connected to a medium flow channel, a second end of the first adapter segment is connected to the second adapter segment, and an end of the second adapter segment away from the first adapter segment is connected to a connecting pipe. The first adapter segment extends along a first direction, and the second adapter segment extends along a second direction, with the first direction intersecting the second direction.

[0048] For example, the adapter can be configured to include a first adapter section and a second adapter section, that is, the adapter is generally L-shaped, and the connecting pipe is configured as a straight pipe. In this way, the fluid is turned in the adapter section with higher structural strength, rather than in the connecting pipe section with lower structural strength. This can improve the problem of deformation of the connecting pipe caused by the pressure generated by the fluid flowing in the connecting pipe.

[0049] In some embodiments, the connector further includes a seal that is clamped between the connector body and the mounting portion.

[0050] In other words, the seal is used to seal the gap between the connecting body and the mounting part, which helps to improve the sealing performance between the connecting body and the mounting part.

[0051] In some embodiments, the enclosure assembly includes an enclosure body and a connector, the adapter being connected to the enclosure body via the connector, and at least one of the enclosure body and the connector being configured as a flexible structure.

[0052] In some embodiments, the adapter and the connector are flexibly connected.

[0053] In this embodiment, by setting the adapter and the connector to be flexibly connected, and by flexibly connecting the connector to the box body, it is beneficial to absorb the assembly tolerance between the adapter and the box assembly, thereby improving the assembly efficiency and connection reliability between the adapter and the box assembly.

[0054] In some embodiments, the connector includes a connecting body and a connecting pipe, the connecting body being connected to the housing body, and the adapter communicating with the connecting pipe;

[0055] The connecting pipe is flexibly connected to the connecting body; and / or,

[0056] The adapter is flexibly connected to the connecting pipe.

[0057] In this embodiment, by configuring the connector to include a connecting body and a connecting pipe, the connecting body is used to connect with the housing body, and the connecting pipe is used to communicate with the adapter, thus improving the connection reliability between the connector and the housing assembly, as well as the connection reliability between the connector and the adapter.

[0058] By setting the connecting pipe and the connecting body to be flexibly connected, and flexibly connecting the flexible part to the box body, the multiple flexible connections further help to absorb the assembly tolerance between the adapter and the box assembly, thereby further improving the assembly efficiency and connection reliability between the adapter and the box assembly.

[0059] By setting the adapter and connecting pipe to be flexibly connected, and by setting the connecting pipe and connecting body to be flexibly connected, the assembly tolerance between the adapter and the housing assembly can be absorbed, thereby improving the assembly efficiency and connection reliability between the adapter and the housing assembly.

[0060] In some embodiments, the connecting body includes a flange and a flexible connecting ring. The flange is connected to the box body. The flange is provided with a connecting hole, and the flexible connecting ring is sleeved on the connecting pipe. The connecting pipe is flexibly connected to the connecting hole through the flexible connecting ring.

[0061] In this embodiment, by configuring the connecting body to include a flange and a flexible connecting ring, the flange is used to connect to the housing body. This not only improves the connection reliability between the connecting body and the housing assembly, but also allows the connecting pipe to be flexibly connected to the connecting hole of the flange through the flexible connecting ring. Thus, through multiple flexible connections, it is further beneficial to absorb the assembly tolerance between the adapter and the housing assembly, thereby further improving the assembly efficiency and connection reliability between the adapter and the housing assembly.

[0062] In some embodiments, the connecting pipe includes a first connecting pipe and a second connecting pipe, the first connecting pipe being flexibly connected to the connecting hole via a flexible connecting ring, and the second connecting pipe being flexibly connected to the first connecting pipe.

[0063] In some embodiments, the second connecting pipe includes a flexible connecting pipe and a rigid connecting pipe, with the rigid connecting pipe sleeved around the outer periphery of the flexible connecting pipe, or the rigid connecting pipe connected to one end of the flexible connecting pipe along the axial direction, and the first connecting pipe and the adapter both being flexibly connected to the flexible connecting pipe.

[0064] In some embodiments, the connecting tube is constructed by forming a flexible connecting tube and a rigid connecting tube through two-color injection molding.

[0065] In some embodiments, the elastic modulus of the flexible connecting ring is 0.1 MPa-10000 MPa.

[0066] In some embodiments, the connecting pipe includes a flexible connecting pipe and a rigid connecting pipe, with the rigid connecting pipe sleeved around the outer periphery of the flexible connecting pipe, or the rigid connecting pipe and one axial end of the flexible connecting pipe are connected, and the flexible connecting pipe is flexibly connected to the adapter.

[0067] In some embodiments, the connecting tube is constructed by forming a flexible connecting tube and a rigid connecting tube through two-color injection molding.

[0068] Flexible connecting pipes can flexibly connect with adapters and also provide a sealing function, thereby improving the reliability of the connection between flexible connecting pipes and adapters.

[0069] In some embodiments, the elastic modulus of the flexible connecting tube is 0.1 MPa-10000 MPa;

[0070] In some embodiments, the wall thickness of the flexible connecting tube is less than that of the rigid connecting tube.

[0071] A second aspect of this disclosure provides an energy storage device including a plurality of the above-described battery devices for storing or providing electrical energy.

[0072] The battery device of the energy storage device provided in this disclosure includes a housing assembly, battery cell assemblies, and a heat exchange assembly. The battery cell assemblies are disposed within the housing cavity of the housing assembly, which protects the battery cell assemblies. The heat exchange assembly exchanges heat with the battery cell assemblies. Furthermore, by flexibly connecting the adapter to at least a portion of the housing assembly—that is, by allowing axial extension, folding, and vertical displacement between the adapter and the housing assembly—it is beneficial to absorb assembly tolerances between the adapter and the housing assembly, thereby improving assembly efficiency and connection reliability. Moreover, the connection does not require other components, thus reducing the number of components, lowering costs and space requirements, improving the structural compactness of the battery device, and ultimately increasing its energy density.

[0073] A third aspect of this disclosure provides an electrical device, including the battery device described above or the energy storage device described above, wherein the battery device is used to store or provide electrical energy.

[0074] The battery device of the power device provided in this disclosure includes a housing assembly, a battery cell assembly, and a heat exchange assembly. The battery cell assembly is disposed within the housing cavity of the housing assembly, which protects the battery cell assembly. The heat exchange assembly is used for heat exchange with the battery cell assembly. Furthermore, by flexibly connecting the adapter to at least a portion of the housing assembly—that is, by allowing axial extension, folding, and vertical displacement between the adapter and the housing assembly—it is beneficial to absorb assembly tolerances between the adapter and the housing assembly, thereby improving assembly efficiency and connection reliability. Moreover, the connection does not require other components, thus reducing the number of components, lowering costs and space requirements, improving the structural compactness of the battery device, and ultimately increasing its energy density. Attached Figure Description

[0075] Figure 1 is a structural schematic diagram of a vehicle provided in an embodiment of this disclosure;

[0076] Figure 2 is a partial structural diagram of a battery device provided in an embodiment of this disclosure;

[0077] Figure 3 is a partial structural schematic diagram of a housing assembly provided in an embodiment of this disclosure;

[0078] Figure 4 is a schematic diagram of the structure of a heat exchange component provided in an embodiment of the present disclosure;

[0079] Figure 5 is the front view of Figure 1;

[0080] Figure 6 is a cross-sectional view along the AA direction in Figure 5;

[0081] Figure 7 is an enlarged view of point B in Figure 6;

[0082] Figure 8 is a schematic diagram of the connection structure between the connecting body and the first connecting pipe according to an embodiment of the present disclosure;

[0083] Figure 9 is a schematic diagram of the structure of the second connecting pipe provided in an embodiment of this disclosure;

[0084] Figure 10 is a schematic diagram of the structure of an energy storage device according to an embodiment of the present disclosure.

[0085] Explanation of reference numerals in the attached drawings: 10. Battery cell assembly; 11. Battery cell; 20. Housing assembly; 21. Housing body; 22. Connector; 221. Connecting body; 2211. Flange; 2212. Flexible connecting ring; 222. Connecting pipe; 2221. First connecting pipe; 2222. Second connecting pipe; 2223. Rigid connecting pipe; 2224. Flexible connecting pipe; 2225. Protrusion; 223. Seal; 23. Flexible part; 231. Groove; 24. Mounting part; 25. Receiving cavity; 30. Heat exchange assembly; 31. Adapter; 311. First adapter section; 312. Second adapter section; 32. Heat exchange component; 100. Battery device; 200. Controller; 300. Motor; 1000. Vehicle; 400. Energy storage device; 410. Energy storage housing. Detailed Implementation

[0086] Unless otherwise specified, all embodiments and optional embodiments of this disclosure can be combined to form new technical solutions.

[0087] Unless otherwise specified, all technical features and optional technical features of this disclosure can be combined to form new technical solutions.

[0088] In the description of this disclosure, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0089] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances.

[0090] With the development of clean energy, more and more devices are using electricity as their driving force, leading to the rapid development of power batteries, such as lithium-ion batteries, which can store a large amount of electrical energy and can be repeatedly charged and discharged. These power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields.

[0091] This disclosure provides an electrical device, including a battery device or an energy storage device according to any embodiment of this disclosure, wherein the battery device is used to store or provide electrical energy.

[0092] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This disclosure does not impose any special limitations on the above-mentioned electrical devices.

[0093] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device.

[0094] Referring to Figure 1, a controller 200, a motor 300, and a battery device 100 can be installed inside the vehicle 100. The controller 200 controls the battery device 100 to supply power to the motor 300. For example, the battery device 100 can be installed 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's electrical system, such as meeting the power requirements for starting, navigation, and operation of the vehicle 1000. In another embodiment of this disclosure, 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.

[0095] This disclosure provides an energy storage device, including a plurality of battery devices 100 according to any embodiment of this disclosure, wherein the battery devices 100 are used to store or provide electrical energy.

[0096] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this disclosure can be any power system that requires energy storage devices.

[0097] Please refer to Figure 10. The energy storage device 400 includes an energy storage box 410, and a battery device 100 is disposed inside the energy storage box 410.

[0098] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0099] Referring to Figure 2, this disclosure provides a battery device 100, which includes a housing assembly 20, a battery cell assembly 10, and a heat exchange assembly 30. The housing assembly 20 has a receiving cavity 25 inside. The battery cell assembly 10 is disposed within the receiving cavity 25. The heat exchange assembly 30 is disposed within the housing assembly 20. The heat exchange assembly 30 includes a heat exchange element 32 and a connecting element 31. The heat exchange element 32 is connected to the connecting element 31, and the connecting element 31 is flexibly connected to at least a portion of the housing assembly 20. The heat exchange element 32 has at least one medium flow channel inside, which is used to conduct a heat exchange medium for exchanging heat with the battery cell assembly 10. The medium flow channel is connected to the outside of the housing assembly 20 via the connecting element 31.

[0100] The battery device 100 mentioned in the embodiments of this disclosure may include one or more battery cell assemblies 10 for providing voltage and capacity. The battery cell assembly 10 may include a plurality of battery cells 11, which are connected in series, parallel or mixed connection via a busbar.

[0101] In this embodiment of the disclosure, the battery cell 11 can be a secondary battery, which refers to the battery cell 11 that can be used again after being discharged by recharging to activate the active material.

[0102] The battery cell 11 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this embodiment does not limit it.

[0103] A battery cell 11 typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the negative and positive electrodes. During the charging and discharging process of the battery cell 11, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits between them while allowing active ions to pass through.

[0104] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0105] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0106] As an example, the battery cell assembly 10 can be a battery module, which is formed by arranging and fixing multiple battery cells 11 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 11 together with cable ties.

[0107] In some embodiments, the battery device 100 may be a battery pack, which includes a housing assembly 20 and one or more individual battery cell assemblies 10, the individual battery cell assemblies 10 being housed within the housing assembly 20.

[0108] As an example, the battery cell assembly 10 can be a battery module, which can be housed in the housing assembly 20 by fixing the battery module in the housing assembly 20.

[0109] As an example, the battery cell assembly 10 can also be housed in the housing assembly 20 by directly fixing multiple battery cells 11 to the housing assembly 20.

[0110] As an example, referring to Figure 2, the housing assembly 20 may include a housing body 21, which may include a first housing (not shown) and a second housing. The first housing and the second housing are fastened together to form a closed receiving cavity 25 inside the housing assembly 20 to house the battery cell assembly 10. Here, "closed" refers to covering or closing, which can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0111] As an example, the housing assembly 20 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing assembly 20 forms a closed receiving cavity 25 to house the battery cell assembly 10.

[0112] In some embodiments, the housing assembly 20 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing assembly 20 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing assembly 20 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0113] It should be noted that the specific type of heat exchange medium is not limited here, as long as it can achieve a cooling effect on the battery cell 11, such as being gaseous or liquid. In this embodiment, a coolant is used as an example for description.

[0114] For example, the heat exchanger 32 also includes an inlet and an outlet, both of which are in communication with the medium flow channel.

[0115] For example, adapter 31 is a water tap.

[0116] Here, the inlet and outlet of the heat exchanger 32 are used to connect to the air conditioning system of the vehicle or electrical equipment, or to liquid storage devices such as water tanks.

[0117] It should be noted that there is no limit to the specific number of media flow channels. There can be one or more.

[0118] In this disclosure, "multiple" refers to two or more items.

[0119] The principle of heat exchange component 30 for heat exchange of battery cell assembly 10 is as follows: the heat exchange medium output from the heat exchange medium source (not shown in the figure) enters the medium flow channel through the inlet of heat exchange component 30. After the heat exchange medium exchanges heat with battery cell assembly 10, the heat exchange medium flows out through the outlet of heat exchange component 30, thus completing the heat exchange of battery cell assembly 10.

[0120] Here, "flexible connection between adapter 31 and at least part of housing assembly 20" means that adapter 31 can be flexibly connected to part of housing assembly 20 or flexibly connected to all of housing assembly 20.

[0121] For example, if the adapter 31 is non-flexible connected to the first part of the housing assembly 20, and the first part of the housing assembly 20 is flexibly connected to the second part of the housing assembly 20, then the adapter 31 is flexibly connected to the second part of the housing assembly 20, that is, the adapter 31 is flexibly connected to a portion of the housing assembly 20.

[0122] Here, the adapter 31 is flexibly connected to at least part of the housing assembly 20, which means that the adapter 31 and at least part of the housing assembly 20 are connected in a way that allows for axial extension, folding, and a certain amount of displacement in the vertical axis.

[0123] Here, the flexible connection between the adapter 31 and at least part of the housing assembly 20 can be attributed to the material properties of the adapter 31 and / or the housing assembly 20. This type of property can be due to the material's lighter weight, or it can be due to at least one of the material's thickness, stiffness, strength, modulus of elasticity, etc. As an example, the materials of the adapter 31 and at least part of the housing assembly 20 can be chosen to be lighter than conventional aluminum plates, steel plates, etc., and their flexibility can be controlled by the thickness, width, length, and type of material of the adapter 31 and at least part of the housing assembly 20. Alternatively, it can be a structural characteristic of the adapter 31 and / or the housing assembly 20, for example, by thinning a portion of the structure of the adapter 31 and / or the housing assembly 20.

[0124] In related technologies, heat exchange components are used to exchange heat between individual battery cells. The inlet and outlet of the heat exchange components are connected by water-cooled pipes. The water-cooled pipes are sealed to the housing by flanges and then connected to external inlet and outlet water ports and external pipelines. The water-cooled pipes need to absorb assembly tolerances and generally require crimped quick connectors, which results in a large space occupation and leads to a non-compact structure of the battery device.

[0125] The battery device 100 provided in this embodiment includes a housing assembly 20, a battery cell assembly 10, and a heat exchange assembly 30. The battery cell assembly 10 is disposed within the receiving cavity 25 of the housing assembly 20, which protects the battery cell assembly 10. The heat exchange assembly 30 is used to exchange heat with the battery cell assembly 10. Furthermore, by flexibly connecting the adapter 31 to at least a portion of the housing assembly 20—that is, by allowing axial extension, folding, and vertical displacement between the adapter 31 and the housing assembly 20—it is advantageous to absorb assembly errors between the adapter 31 and the housing assembly 20, thereby improving assembly efficiency and connection reliability. Moreover, it eliminates the need for other components to achieve the connection, thus reducing the number of components, lowering costs and space requirements, improving the structural compactness of the battery device 100, and ultimately increasing the energy density of the battery device 100.

[0126] In some embodiments, as shown in Figures 2 and 3, the enclosure assembly 20 includes an enclosure body 21, a mounting portion 24, and a flexible portion 23. The mounting portion 24 is flexibly connected to the enclosure body 21 via the flexible portion 23, and the adapter 31 is connected to the mounting portion 24.

[0127] In this way, the adapter 31 and the box body 21 can be flexibly connected.

[0128] For example, the box body 21 and the flexible part 23 can be an integral structure or a separate structure.

[0129] For example, the materials of the box body 21 and the flexible part 23 can be the same, such as both being metal parts, or they can be different, such as the box body 21 being a metal part and the flexible part 23 being a non-metal part.

[0130] For example, the box body 21, the mounting part 24 and the flexible part 23 can be an integral structure or a separate structure.

[0131] For example, the materials of the box body 21, the mounting part 24 and the flexible part 23 can be the same, such as all being metal parts, or they can be different, such as the box body 21 being a metal part and the flexible part 23 being a non-metal part. The flexible part 23 can be either a metal part or a non-metal part.

[0132] Here, the mounting part 24 is flexibly connected to the box body 21 through the flexible part 23, which means that the connection between the flexible part 23 and the box body 21 is such that axial expansion and contraction, folding and rotation and a certain amount of displacement in the vertical axis can occur.

[0133] In this embodiment, by configuring the housing assembly 20 to include the housing body 21, the mounting part 24 and the flexible part 23, and the mounting part 24 being flexibly connected to the housing body 21 through the flexible part 23, it is beneficial to absorb the assembly tolerance between the adapter 31 and the housing assembly 20, thereby improving the assembly efficiency and connection reliability between the adapter 31 and the housing assembly 20.

[0134] It should be noted that there are multiple ways to flexibly connect the flexible part 23 to the box body 21.

[0135] In some embodiments, as shown in FIG5, the flexible portion 23 is arranged around the periphery of the mounting portion 24.

[0136] In other words, the periphery of the mounting part 24 is flexibly connected to the box body 21 through the flexible part 23. This makes it more advantageous for the flexible part 23 and the box body 21 to be connected in a way that allows for axial expansion and contraction, folding and rotation and a certain amount of displacement in the vertical axis.

[0137] In other embodiments, the flexible part 23 can also be flexibly connected to the box body 21 on one side along the thickness direction, which further helps to absorb the assembly tolerance between the adapter 31 and the box assembly 20.

[0138] It should be noted that the specific method of connecting the adapter 31 to the mounting part 24 is not limited here.

[0139] In some embodiments, as shown in Figures 5 to 7, a portion of the flexible portion 23 is recessed to form a groove 231, which extends along the periphery of the mounting portion 24.

[0140] Here, the recessed area of ​​the flexible part 23 forming the groove 231 can be formed by at least a portion of the sidewall of one side of the flexible part 23 protruding, so that the sidewall of the other side of the flexible part 23 is recessed to form the groove 231. At this time, the thickness of the groove wall of the groove 231 is equal to the wall thickness of the flexible part 23.

[0141] For example, by stamping, a groove 231 is formed on at least a portion of the sidewall of the flexible portion 23 so that the flexible portion 23 is generally wavy.

[0142] Alternatively, at least a portion of the sidewall on one side of the flexible portion 23 is thinned to form a groove 231, that is, the thickness of the groove wall of the groove 231 is less than the wall thickness of other areas of the flexible portion 23.

[0143] For example, milling, planing, or other processing techniques can be used to thin at least a portion of the sidewall on one side of the flexible portion 23 to form a groove 231. The groove 231 formed by this processing method has high precision and is easy to form. In this embodiment, the structural strength of the groove 231 can be further reduced so that the area of ​​the flexible portion 23 located in the groove 231 is more prone to deformation.

[0144] In this embodiment, by recessing a portion of the flexible portion 23 to form a groove 231, the area of ​​the flexible portion 23 located in the groove 231 is more prone to deformation.

[0145] In some embodiments, the elastic modulus of the flexible part 23 is 0.1 MPa-10000 MPa.

[0146] For example, the elastic modulus of the flexible part 23 can be any one of 0.1MPa, 1MPa, 50MPa, 100MPa, 150MPa, 200MPa, 300MPa, 500MPa, 800MPa, 1000MPa, 1300MPa, 1500MPa, 1800MPa, 2000MPa, 2500MPa, 2800MPa, 3000MPa, 3500MPa, 4000MPa, 4500MPa, 5000MPa, 5500MPa, 6000MPa, 6500MPa, 7000MPa, 7500MPa, 8000MPa, 8500MPa, 8800MPa, 9000MPa, 9500MPa, 9700MPa, and 10000MPa, or a value between any two.

[0147] The elastic modulus describes the magnitude of a unit strain caused by a unit stress when a solid is subjected to force within a certain range; it is one of the fundamental physical quantities of materials. The larger the elastic modulus, the greater the stiffness and compressive strength of the material. The elastic modulus is a physical quantity that describes the elasticity of a material.

[0148] In this embodiment, by setting the elastic modulus of the flexible part 23 to 0.1MPa-10000MPa, the flexible part 23 is made to have a certain structural strength, improve the reliability of the flexible part 23, and also have a certain deformation capability, thereby realizing the flexible connection between the mounting part 24 and the box body 21 through the flexible part 23.

[0149] In some embodiments, referring to Figures 7 to 9, the housing assembly 20 includes a housing body 21 and a connector 22, and the adapter 31 is connected to the housing body 21 via the connector 22. At least one of the housing body 21 and the connector 22 is configured as a flexible structure.

[0150] In other words, the adapter 31 is connected to the box body 21 via the connector 22. By setting at least one of the box body 21 and the connector 22 as a flexible structure, the connector 22 can be made to float.

[0151] In this embodiment, by providing a connector 22, the adapter 31 is connected to the box body 21 through the connector 22, which helps to improve the connection efficiency and reliability between the adapter 31 and the box body 21.

[0152] In some embodiments, as shown in Figures 7 to 9, the adapter 31 is flexibly connected to the connector 22.

[0153] In other words, the adapter 31 and the connector 22 are connected in a way that allows for axial expansion and contraction, folding and rotation, and a certain amount of displacement in the vertical axis.

[0154] In this embodiment, by setting the adapter 31 and the connector 22 as a flexible connection, and by using the mounting part 24 to flexibly connect with the housing body 21 via the flexible part 23, it is further beneficial to absorb the assembly tolerance between the adapter 31 and the housing assembly 20, thereby further improving the assembly efficiency and connection reliability between the adapter 31 and the housing assembly 20.

[0155] It should be noted that the specific structural form of the connector 22 is not limited here.

[0156] In some embodiments, please refer to Figures 5 to 7, the connector 22 includes a connector body 221 and a connector tube 222. The connector body 221 is connected to the mounting part 24, and the adapter 31 communicates with the connector tube 222.

[0157] Here, the connecting body 221 and the connecting pipe 222 can be an integral structure or a separate structure.

[0158] Here, the specific method of connecting the connecting body 221 and the mounting part 24 is not limited. For example, the connecting body 221 and the mounting part 24 can be fastened, snap-fitted, plugged in, bonded, welded, etc.

[0159] In this embodiment, by configuring the connector 22 to include a connector body 221 and a connector pipe 222, the connector body 221 is used to connect with the mounting part 24 and the connector pipe 222 is used to communicate with the adapter 31, thus improving the connection reliability between the connector 22 and the housing assembly 20, and also improving the connection reliability between the connector 22 and the adapter 31.

[0160] In some embodiments, please refer to FIG7, the connector 22 further includes a seal 223, which is sealed and clamped between the connector body 221 and the mounting portion 24.

[0161] The specific material of the seal 223 is not limited here; for example, the seal 223 is a rubber component.

[0162] In other words, the seal 223 is used to seal the gap between the connecting body 221 and the mounting part 24, which helps to improve the sealing performance between the connecting body 221 and the mounting part 24.

[0163] In some embodiments, as shown in Figures 6 and 7, the connecting tube 222 is flexibly connected to the connecting body 221.

[0164] In other words, the connection between the connecting pipe 222 and the connecting body 221 is a connection method that allows for axial expansion and contraction, folding, and a certain amount of displacement in the vertical axis.

[0165] In this embodiment, by setting the connecting pipe 222 and the connecting body 221 as a flexible connection, and by flexibly connecting the flexible part 23 to the box body 21, the multiple flexible connections further help to absorb the assembly tolerance between the adapter 31 and the box assembly 20, thereby further improving the assembly efficiency and connection reliability between the adapter 31 and the box assembly 20.

[0166] In some embodiments, as shown in Figures 6 and 7, the adapter 31 is flexibly connected to the connecting tube 222.

[0167] In other words, the adapter 31 and the connecting pipe 222 are connected in a way that allows for axial expansion and contraction, folding, and a certain amount of displacement in the vertical axis.

[0168] In this embodiment, by setting the adapter 31 and the connecting pipe 222 as a flexible connection, and by setting the connecting pipe 222 and the connecting body 221 as a flexible connection, the mounting part 24 is flexibly connected to the box body 21 through the flexible part 23. Thus, through multiple flexible connections, it is further beneficial to absorb the assembly tolerance between the adapter 31 and the box assembly 20, thereby further improving the assembly efficiency and connection reliability between the adapter 31 and the box assembly 20.

[0169] In some embodiments, as shown in Figures 7 to 9, the connecting body 221 includes a flange 2211 and a flexible connecting ring 2212. The flange 2211 is connected to the mounting part 24. The flange 2211 is provided with a connecting hole, and the flexible connecting ring 2212 is sleeved on the connecting pipe 222. The connecting pipe 222 is flexibly connected to the connecting hole through the flexible connecting ring 2212.

[0170] Here, the flange 2211 and the flexible connecting ring 2212 can be an integral structure, such as being formed by two-color injection molding, or they can be separate structures.

[0171] In embodiments where the flange 2211 and the flexible connecting ring 2212 are separate structures, the specific connection method between the flange 2211 and the flexible connecting ring 2212 is not limited here; for example, they can be connected together by snap-fit, adhesive, or other methods.

[0172] Here, the flexible connecting ring 2212 is constructed as a ring structure made of flexible material so that the flexible connecting ring 2212 has a certain elastic modulus to meet the requirement of flexible connection between the connecting pipe 222 and the connecting body 221 through the flexible connecting ring 2212.

[0173] For example, the flexible connecting ring 2212 may be made of materials such as silicone rubber or ethylene propylene diene monomer (EPDM). Of course, it can also be made of other materials that are deformable and have a certain elastic modulus.

[0174] The flexible connecting ring 2212 is sleeved on the connecting pipe 222, and the connecting pipe 222 is flexibly connected to the connecting hole through the flexible connecting ring 2212. That is to say, the flexible connecting ring 2212 is sandwiched between the connecting pipe 222 and the flange 2211. In this way, a flexible connection between the connecting pipe 222 and the flange 2211 can be achieved, and a sealed connection between the connecting pipe 222 and the flange 2211 can also be achieved.

[0175] The flange 2211 is connected to the mounting part 24, that is, the connecting body 221 includes a disc-shaped main structure for connecting to the mounting part 24, thereby improving the connection reliability between the connector 22 and the housing assembly 20.

[0176] In this embodiment, by configuring the connecting body 221 to include a flange 2211 and a flexible connecting ring 2212, with the flange 2211 used to connect to the mounting part 24, it is beneficial to improve the connection reliability between the connecting body 221 and the housing assembly 20, and also to flexibly connect the connecting pipe 222 to the connecting hole of the flange 2211 through the flexible connecting ring 2212. Thus, through multiple flexible connections, it is further beneficial to absorb the assembly tolerance between the adapter 31 and the housing assembly 20, thereby further improving the assembly efficiency and connection reliability between the adapter 31 and the housing assembly 20.

[0177] In some embodiments, the elastic modulus of the flexible connecting ring 2212 is 0.1 MPa-10000 MPa.

[0178] For example, the elastic modulus of the flexible connecting ring 2212 can be 0.1 MPa, 1 MPa, 50 MPa, 100 MPa, 150 MPa, 200 MPa, 300 MPa, 500 MPa, 800 MPa, 1000 MPa, 1300 MPa, 1500 MPa, 1800 MPa, 2000 MPa, 2500 MPa, 2800 MPa, 3000 MPa, etc. Point values ​​of any one of 3500MPa, 4000MPa, 4500MPa, 5000MPa, 5500MPa, 6000MPa, 6500MPa, 7000MPa, 7500MPa, 8000MPa, 8500MPa, 8800MPa, 9000MPa, 9500MPa, 9700MPa, and 10000MPa, or point values ​​between any two of them.

[0179] In this embodiment, by setting the elastic modulus of the flexible connecting ring 2212 to 0.1MPa-10000MPa, the flexible connecting ring 2212 is made to have a certain structural strength, which improves the reliability of the flexible connecting ring 2212 and has a certain deformation capability, thereby realizing the flexible connection of the connecting pipe 222 to the connecting hole through the flexible connecting ring 2212.

[0180] In some embodiments, please refer to Figures 7 to 9. The connecting tube 222 includes a first connecting tube 2221 and a second connecting tube 2222. The first connecting tube 2221 is flexibly connected to the connecting hole through a flexible connecting ring 2212, and the second connecting tube 2222 is flexibly connected to the first connecting tube 2221.

[0181] The first connecting pipe 2221 is flexibly connected to the connecting hole via a flexible connecting ring 2212. The second connecting pipe 2222 is flexibly connected to the first connecting pipe 2221 and is used for connection and communication with the adapter.

[0182] Here, the second connecting pipe 2222 is flexibly connected to the first connecting pipe 2221, and the second connecting pipe 2222 is connected to the first connecting pipe 2221. The second connecting pipe 2222 can be sleeved on the outer periphery of the first connecting pipe 2221, or the first connecting pipe 2221 can be sleeved on the outer periphery of the second connecting pipe 2222, or the first connecting pipe 2221 and the second connecting pipe 2222 can be connected together.

[0183] In this embodiment, by configuring the connecting pipe 222 to include a first connecting pipe 2221 and a second connecting pipe 2222, the first connecting pipe 2221 and the second connecting pipe 2222 are respectively connected to the flange 2211 and the adapter 31, and the second connecting pipe 2222 is flexibly connected to the first connecting pipe 2221, it is beneficial to improve the connection reliability between the connecting pipe 222 and the flange 2211 and the adapter 31, and further beneficial to absorb the assembly tolerance between the flange 2211 and the adapter 31, thereby further improving the assembly efficiency and connection reliability between the flange 2211 and the adapter 31.

[0184] In some embodiments, please continue to refer to Figures 7 and 8. The second connecting pipe 2222 includes a flexible connecting pipe 2224 and a rigid connecting pipe 2223. The rigid connecting pipe 2223 is sleeved on the outer periphery of the flexible connecting pipe 2224. Alternatively, the rigid connecting pipe 2223 is connected to one end of the flexible connecting pipe 2224 along the axial direction. The first connecting pipe 2221 and the adapter 31 are both flexibly connected to the flexible connecting pipe 2224.

[0185] Here, the flexible connecting pipe 2224 and the rigid connecting pipe 2223 can be an integral structure or a separate structure.

[0186] In an embodiment where the flexible connecting tube 2224 and the rigid connecting tube 2223 are an integral structure, the connecting tube 222 is configured to form the flexible connecting tube 2224 and the rigid connecting tube 2223 by two-color injection molding.

[0187] This helps reduce the number of parts, improve assembly efficiency, and enhance the structural strength and reliability of the connecting pipe 222.

[0188] In embodiments where the flexible connecting tube 2224 and the rigid connecting tube 2223 are separate structures, the specific connection method of the flexible connecting tube 2224 and the rigid connecting tube 2223 is not limited here. For example, they can be connected together by snap-fit, adhesive or other methods.

[0189] The flexible connecting pipe 2224 can be flexibly connected to the first connecting pipe 2221 and the adapter 31, and can also play a sealing role, thereby improving the connection reliability of the flexible connecting pipe 2224 with the first connecting pipe 2221 and the adapter 31.

[0190] The rigid connecting tube 2223 is sleeved around the outer periphery of the flexible connecting tube 2224, meaning that the rigid connecting tube 2223 and the flexible connecting tube 2224 radially overlap each other. The rigid connecting tube 2223 provides structural strength, and by being sleeved around the outer periphery of the flexible connecting tube 2224, the rigid connecting tube 2223 can provide a certain degree of constraint on the flexible connecting tube 2224.

[0191] The rigid connecting pipe 2223 and the flexible connecting pipe 2224 are connected at one end along the axial direction, that is, the rigid connecting pipe 2223 and the flexible connecting pipe 2224 are wrapped around each other in the axial direction.

[0192] Here, the flexible connecting pipe 2224 is constructed as a tubular structure made of flexible material so that the flexible connecting pipe 2224 has a certain elastic modulus, which satisfies the requirement that both the first connecting pipe 2221 and the adapter 31 are flexibly connected to the flexible connecting pipe 2224.

[0193] For example, the flexible connecting tube 2224 may be made of rubber, such as silicone rubber, ethylene propylene diene monomer (EPDM), or other rubber components. Of course, it may also be made of other materials with a certain elastic modulus.

[0194] For example, the elastic modulus of the flexible connecting pipe 2224 is 0.1MPa-10000MPa.

[0195] For example, the elastic modulus of the flexible connecting pipe 2224 can be 0.1 MPa, 1 MPa, 50 MPa, 100 MPa, 150 MPa, 200 MPa, 300 MPa, 500 MPa, 800 MPa, 1000 MPa, 1300 MPa, 1500 MPa, 1800 MPa, 2000 MPa, 2500 MPa, 2800 MPa, 3000 MPa, etc. Point values ​​of any one of 3500MPa, 4000MPa, 4500MPa, 5000MPa, 5500MPa, 6000MPa, 6500MPa, 7000MPa, 7500MPa, 8000MPa, 8500MPa, 8800MPa, 9000MPa, 9500MPa, 9700MPa, and 10000MPa, or point values ​​between any two of them.

[0196] The elastic modulus describes the magnitude of a unit strain caused by a unit stress when a solid is subjected to force within a certain range; it is one of the fundamental physical quantities of materials. The larger the elastic modulus, the greater the stiffness and compressive strength of the material. The elastic modulus is a physical quantity that describes the elasticity of a material.

[0197] In this embodiment, by setting the elastic modulus of the flexible connecting tube 2224 to 0.1MPa-10000MPa, the flexible connecting tube 2224 has a certain structural strength, which improves the reliability of the connecting tube 222, and also has a certain deformation capacity. This can improve the fit between the flexible connecting tube 2224 and the adapter 31 and the first connecting tube 2221, thereby improving the sealing performance between the flexible connecting tube 2224 and the first connecting tube 2221 and the adapter 31.

[0198] For example, the wall thickness of the flexible connecting tube 2224 is less than the wall thickness of the rigid connecting tube 2223.

[0199] In other words, by reducing the wall thickness of the flexible connecting pipe 2224, the flexible connecting pipe 2224 can be deformed, thereby achieving a flexible connection between the first connecting pipe 2221 and the adapter 31 and the flexible connecting pipe 2224.

[0200] In some embodiments, as shown in Figures 7 to 9, a protrusion 2225 is formed on the outer side wall of the first connecting tube 2221, and the protrusion 2225 contacts the flexible connecting tube 2224.

[0201] Here, a portion of the outer wall of the first connecting pipe 2221 may protrude to form a protrusion 2225, or the outer wall of the first connecting pipe 2221 may protrude to form a ring of protrusions 2225.

[0202] For example, the protrusion 2225 forms a guide surface, which is used to guide the first connecting tube 2221 into the flexible connecting tube 2224, that is, the protrusion 2225 is a conical barb.

[0203] In this embodiment, the first connecting pipe 2221 is provided with a protrusion 2225, which contacts the flexible connecting pipe 2224. This helps to improve the sealing performance between the first connecting pipe 2221 and the flexible connecting pipe 2224, and also helps to reduce the possibility of the first connecting pipe 2221 coming out of the flexible connecting pipe 2224.

[0204] In some embodiments, referring to Figures 2 to 4, the adapter 31 includes a first adapter segment 311 and a second adapter segment 312. The first end of the first adapter segment 311 is connected to the medium flow channel, the second end of the first adapter segment 311 is connected to the second adapter segment 312, and the end of the second adapter segment 312 away from the first adapter segment 311 is connected to the connecting pipe 222. The first adapter segment 311 extends along a first direction, and the second adapter segment 312 extends along a second direction, and the first direction and the second direction intersect.

[0205] Here, the first direction is, for example, the height direction of the battery device 100, and the second direction can be any direction on a plane perpendicular to the height direction. For example, the second direction is, for example, the front-back direction.

[0206] For example, the material of the adapter 31 is, for example, metal.

[0207] In this embodiment, by setting the adapter 31 to include a first adapter segment 311 and a second adapter segment 312, that is, the adapter 31 is approximately L-shaped, the connection between the adapter 31 and the connector 22 can be facilitated.

[0208] In some embodiments, please refer to Figures 8 and 9, the connecting pipe 222 is a straight pipe.

[0209] It is understood that the connecting pipe 222 is made of a flexible material. Therefore, by setting the connecting pipe 222 as a straight pipe, that is, the connecting pipe 222 extends in a straight line, the problem of deformation of the connecting pipe 222 caused by the pressure generated on the connecting pipe 222 when the fluid flows inside the connecting pipe 222 can be improved.

[0210] For example, the adapter 31 can be configured to include a first adapter section 311 and a second adapter section 312, that is, the adapter 31 is generally L-shaped, and the connecting pipe 222 is configured as a straight pipe. In this way, the fluid is turned in the adapter 31 with higher structural strength, instead of being turned in the connecting pipe 222 with lower structural strength. This can improve the problem of deformation of the connecting pipe 222 caused by the pressure generated on the connecting pipe 222 when the fluid flows in the connecting pipe 222.

[0211] In some embodiments, please refer to Figures 6 and 7. The housing assembly 20 includes a housing body 21 and a connector 22. The adapter 31 is connected to the housing body 21 through the connector 22, and the adapter 31 is flexibly connected to the connector 22.

[0212] In other words, the adapter 31 is indirectly connected to the box body 21 through the connector 22.

[0213] By setting the connector 22 so that the adapter 31 can be connected to the box body 21 through the connector 22, it is beneficial to improve the connection efficiency and reliability between the adapter 31 and the box body 21.

[0214] The adapter 31 and the connector 22 are flexibly connected, meaning that the adapter 31 and the connector 22 are connected in a way that allows for axial expansion and contraction, folding and rotation, and a certain amount of displacement in the vertical axis.

[0215] In this embodiment, by setting the adapter 31 and the connector 22 as a flexible connection, and by flexibly connecting the connector 22 to the box body 21, it is beneficial to absorb the assembly tolerance between the adapter 31 and the box assembly 20, thereby improving the assembly efficiency and connection reliability between the adapter 31 and the box assembly 20.

[0216] In some embodiments, please refer to Figures 5 to 7. The connector 22 includes a connector body 221 and a connector pipe 222. The connector body 221 is connected to the housing body 21, and the adapter 31 is connected to the connector pipe 222.

[0217] Here, the connecting body 221 and the connecting pipe 222 can be an integral structure or a separate structure.

[0218] Here, the specific method of connecting the connecting body 221 and the box body 21 is not limited. For example, the connecting body 221 and the box body 21 can be fastened, snapped, plugged in, glued, welded, etc.

[0219] In this embodiment, by configuring the connector 22 to include a connector body 221 and a connector pipe 222, the connector body 221 is used to connect to the housing body 21, and the connector pipe 222 is used to communicate with the adapter 31, thus improving the connection reliability between the connector 22 and the housing assembly 20, and also improving the connection reliability between the connector 22 and the adapter 31.

[0220] In some embodiments, as shown in Figures 5 to 7, the connecting tube 222 is flexibly connected to the connecting body 221.

[0221] In other words, the connection between the connecting pipe 222 and the connecting body 221 is a connection method that allows for axial expansion and contraction, folding, and a certain amount of displacement in the vertical axis.

[0222] In this embodiment, by setting the connecting pipe 222 and the connecting body 221 as a flexible connection, and by flexibly connecting the flexible part 23 to the box body 21, the multiple flexible connections further help to absorb the assembly tolerance between the adapter 31 and the box assembly 20, thereby further improving the assembly efficiency and connection reliability between the adapter 31 and the box assembly 20.

[0223] In some embodiments, as shown in Figures 7 to 9, the adapter 31 is flexibly connected to the connecting tube 222.

[0224] In other words, the adapter 31 and the connecting pipe 222 are connected in a way that allows for axial expansion and contraction, folding, and a certain amount of displacement in the vertical axis.

[0225] In this embodiment, by setting the adapter 31 and the connecting pipe 222 to be flexibly connected, and by setting the connecting pipe 222 and the connecting body 221 to be flexibly connected, the flexible connection helps to absorb the assembly tolerance between the adapter 31 and the housing assembly 20, thereby improving the assembly efficiency and connection reliability between the adapter 31 and the housing assembly 20.

[0226] In some embodiments, please refer to Figures 6 to 8. The connecting body 221 includes a flange 2211 and a flexible connecting ring 2212. The flange 2211 is connected to the box body 21. The flange 2211 is provided with a connecting hole. The flexible connecting ring 2212 is sleeved on the connecting pipe 222. The connecting pipe 222 is flexibly connected to the connecting hole through the flexible connecting ring 2212.

[0227] In this embodiment, by configuring the connecting body 221 to include a flange 2211 and a flexible connecting ring 2212, the flange 2211 is used to connect to the housing body 21. This not only improves the connection reliability between the connecting body 221 and the housing assembly 20, but also facilitates the flexible connection of the connecting pipe 222 to the connecting hole of the flange 2211 through the flexible connecting ring 2212. Thus, through multiple flexible connections, it is further beneficial to absorb the assembly tolerance between the adapter 31 and the housing assembly 20, thereby further improving the assembly efficiency and connection reliability between the adapter 31 and the housing assembly 20.

[0228] In some embodiments, please refer to Figures 7 to 9. The connecting tube 222 includes a flexible connecting tube 2224 and a rigid connecting tube 2223. The rigid connecting tube 2223 is sleeved on the outer periphery of the flexible connecting tube 2224. Alternatively, the rigid connecting tube 2223 is connected to one end of the flexible connecting tube 2224 along the axial direction. The flexible connecting tube 2224 is flexibly connected to the adapter 31.

[0229] The flexible connecting pipe 2224 can be flexibly connected to the adapter 31 and can also play a sealing role, thereby improving the connection reliability between the flexible connecting pipe 2224 and the adapter 31.

[0230] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure are included within the scope of protection of this disclosure.

Claims

1. A battery device, comprising: A housing assembly having an internal receiving cavity; A battery cell assembly, wherein the battery cell assembly is disposed within the receiving cavity; A heat exchange assembly is disposed within the housing assembly; wherein the heat exchange assembly includes a heat exchange element and an adapter, the heat exchange element is connected to the adapter, and the adapter is flexibly connected to at least a portion of the housing assembly; the heat exchange element has at least one medium flow channel inside, the at least one medium flow channel is used to conduct heat exchange medium, the heat exchange medium is used to exchange heat with the battery cell assembly, and the medium flow channel is connected to the outside of the housing assembly through the adapter.

2. The battery device of claim 1, wherein, The enclosure assembly includes an enclosure body, a mounting part, and a flexible part. The mounting part is flexibly connected to the enclosure body through the flexible part, and the adapter is connected to the mounting part.

3. The battery device of claim 2, wherein, The flexible portion is arranged around the periphery of the mounting portion.

4. The battery device of claim 2, wherein, The housing assembly also includes a connector, and the adapter is connected to the mounting part via the connector.

5. The battery device of claim 4, wherein, The adapter is flexibly connected to the connector.

6. The battery device of claim 5, wherein, The connector includes a connecting body and a connecting pipe, the connecting body is connected to the mounting part, and the adapter communicates with the connecting pipe. The connecting pipe is flexibly connected to the connecting body; and / or, The adapter is flexibly connected to the connecting pipe.

7. The battery device of claim 6, wherein, The connecting body includes a flange and a flexible connecting ring. The flange is connected to the mounting part. The flange is provided with a connecting hole. The flexible connecting ring is sleeved on the connecting pipe. The connecting pipe is flexibly connected to the connecting hole through the flexible connecting ring.

8. The battery device of claim 7, wherein, The connecting pipe includes a first connecting pipe and a second connecting pipe. The first connecting pipe is flexibly connected to the connecting hole through the flexible connecting ring, and the second connecting pipe is flexibly connected to the first connecting pipe.

9. The battery device of claim 8, wherein, The second connecting pipe includes a flexible connecting pipe and a rigid connecting pipe. The rigid connecting pipe is sleeved on the outer periphery of the flexible connecting pipe, or the rigid connecting pipe is connected to one end of the flexible connecting pipe along the axial direction. The first connecting pipe and the adapter are both flexibly connected to the flexible connecting pipe.

10. The battery device of claim 9, wherein, The connecting pipe is constructed by forming the flexible connecting pipe and the rigid connecting pipe through two-color injection molding.

11. The battery device according to claim 9 or 10, wherein The outer side wall of the first connecting tube has a protrusion that contacts the flexible connecting tube.

12. The battery device according to any one of claims 9 to 11, wherein The flexible connecting tube is made of rubber.

13. The battery device according to any one of claims 9 to 12, wherein The elastic modulus of the flexible connecting tube is 0.1MPa-10000MPa; The wall thickness of the flexible connecting tube is less than that of the rigid connecting tube.

14. The battery device according to any one of claims 7 to 13, wherein, The elastic modulus of the flexible connecting ring is 0.1MPa-10000MPa.

15. The battery device according to any one of claims 2 to 14, wherein, A portion of the flexible part is recessed to form a groove, and the groove extends along the periphery of the mounting part; and / or The elastic modulus of the flexible part is 0.1MPa-10000MPa.

16. The battery device according to any one of claims 2 to 15, wherein, The main body of the box is made of metal, while the mounting part and the flexible part are made of non-metallic materials.

17. The battery device according to any one of claims 6 to 14, wherein, The connecting pipe is a straight pipe.

18. The battery device according to any one of claims 6 to 14, wherein, The adapter includes a first adapter section and a second adapter section. A first end of the first adapter section is connected to the medium flow channel, and a second end of the first adapter section is connected to the second adapter section. The end of the second adapter section away from the first adapter section is connected to the connecting pipe. The first adapter section extends along a first direction, and the second adapter section extends along a second direction. The first direction and the second direction intersect.

19. The battery device according to any one of claims 6 to 14, wherein, The connector also includes a seal, which is sealed and clamped between the connector body and the mounting portion.

20. The battery device according to claim 1, wherein, The enclosure assembly includes an enclosure body and a connector. The adapter is connected to the enclosure body via the connector. At least one of the enclosure body and the connector is configured as a flexible structure.

21. The battery device of claim 20, wherein, The adapter is flexibly connected to the connector.

22. The battery device according to claim 21, wherein, The connector includes a connecting body and a connecting pipe, the connecting body being connected to the box body, and the adapter communicating with the connecting pipe; The connecting pipe is flexibly connected to the connecting body; and / or, The adapter is flexibly connected to the connecting pipe.

23. The battery device according to claim 22, wherein, The connecting body includes a flange and a flexible connecting ring. The flange is connected to the box body. The flange is provided with a connecting hole. The flexible connecting ring is sleeved on the connecting pipe. The connecting pipe is flexibly connected to the connecting hole through the flexible connecting ring.

24. The battery device according to claim 23, wherein, The connecting pipe includes a first connecting pipe and a second connecting pipe. The first connecting pipe is flexibly connected to the connecting hole through the flexible connecting ring, and the second connecting pipe is flexibly connected to the first connecting pipe.

25. The battery device according to claim 24, wherein, The second connecting pipe includes a flexible connecting pipe and a rigid connecting pipe. The rigid connecting pipe is sleeved on the outer periphery of the flexible connecting pipe, or the rigid connecting pipe is connected to one end of the flexible connecting pipe along the axial direction. The first connecting pipe and the adapter are both flexibly connected to the flexible connecting pipe.

26. The battery device of claim 25, wherein, The connecting pipe is constructed by forming the flexible connecting pipe and the rigid connecting pipe through two-color injection molding.

27. The battery device according to any one of claims 23 to 26, wherein, The elastic modulus of the flexible connecting ring is 0.1MPa-10000MPa.

28. The battery device according to any one of claims 22 to 27, wherein, The connecting pipe includes a flexible connecting pipe and a rigid connecting pipe. The rigid connecting pipe is sleeved on the outer periphery of the flexible connecting pipe, or the rigid connecting pipe is connected to one end of the flexible connecting pipe along the axial direction, and the flexible connecting pipe is flexibly connected to the adapter.

29. The battery device according to claim 28, wherein, The connecting pipe is constructed by forming the flexible connecting pipe and the rigid connecting pipe through two-color injection molding.

30. The battery device according to claim 25 or 28, wherein, The elastic modulus of the flexible connecting tube is 0.1MPa-10000MPa; The wall thickness of the flexible connecting tube is less than that of the rigid connecting tube.

31. An energy storage device comprising a plurality of battery devices according to any one of claims 1-30, the battery devices being used to store or provide electrical energy.

32. An electrical device comprising a battery device according to any one of claims 1-30 or an energy storage device according to claim 31, wherein the battery device is used to store or provide electrical energy.

Images