Battery device and power utilization device

Abstract

The utility model discloses a battery device and an electric device. The battery device comprises a liquid cooling connector assembly, the liquid cooling connector assembly comprises a first connector, a second connector and an inner side sealing sleeve, and the first connector is provided with a first insertion hole; the second connector is provided with a second inserting hole, and the second connector is arranged on the first connector in a sleeving mode through the second inserting hole so that the first inserting hole can be communicated with the second inserting hole. The inner side sealing sleeve is located in the second inserting hole, the inner side sealing sleeve is fixedly connected with at least one of the first connector and the second connector, and the inner side sealing sleeve is in sealing fit with at least one of the first connector and the second connector. Therefore, the first connector and the second connector can be sealed through the inner side sealing sleeve, the sealing effect of the first connector and the second connector is improved, and meanwhile the risk that the first connector and / or the second connector are / is damaged due to the fact that sealing treatment is directly conducted between the first connector and the second connector can be reduced through the inner side sealing sleeve.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to sustainable development, which in turn promotes the adjustment of the energy structure and drives the development and application of battery technology. The key to the development of battery technology lies in electrochemical energy storage technology. Due to its advantages such as high energy density, good cycle capability, high operating voltage, environmental friendliness, and low self-discharge, it has been widely used in portable electronics, electric vehicles, and energy storage systems.

[0003] In battery devices, liquid cooling is typically used to cool individual battery cells. The liquid cooling structure needs to be connected to an external liquid cooling device via a connector. However, the connectors of existing liquid cooling structures and external liquid cooling devices have poor sealing performance and are prone to damage. Utility Model Content

[0004] The main objective of this application is to provide a battery device and an electrical device that address the technical problems of poor sealing and easy damage of connectors in the prior art.

[0005] To address the aforementioned problems, this application provides a battery device including a liquid-cooled connector assembly. The liquid-cooled connector assembly includes a first connector, a second connector, and an inner sealing sleeve. The first connector has a first insertion hole; the second connector has a second insertion hole and is fitted onto the first connector through the second insertion hole, allowing communication between the first and second insertion holes. The inner sealing sleeve is located within the second insertion hole and is fixedly connected to at least one of the first and second connectors, providing a sealing fit. Thus, the second connector, fitted onto the first connector through the second insertion hole, facilitates fluid flow between the first and second insertion holes. Furthermore, the inner sealing sleeve's sealing fit with at least one of the first and second connectors improves the sealing effect of the first and second connectors and reduces the risk of damage to the first and / or second connectors caused by direct sealing between them.

[0006] In some embodiments, the liquid-cooled connector assembly includes a first seal fixed between an inner sealing sleeve and a first connector. Thus, the first seal, fixed between the inner sealing sleeve and the first connector, enhances the sealing effect on the first and second connectors through the cooperation of the first seal and the inner sealing sleeve. This design is simple and facilitates product manufacturing.

[0007] In some embodiments, the inner sealing sleeve portion is located in the first insertion hole, and the first sealing element includes a first sealing ring, which is fixed between the inner sealing sleeve and the inner wall of the first insertion hole. Thus, the first sealing ring, fixed between the inner sealing sleeve and the inner wall of the first insertion hole, enhances the sealing effect between the inner sealing sleeve and the first connector, resulting in a simple structure that is easy to manufacture.

[0008] In some embodiments, the inner sealing sleeve includes an outward protrusion located at the end of the first connector, and the first sealing element includes a second sealing ring fixed between the outward protrusion and the end of the first connector. Thus, fixing the first sealing ring between the outward protrusion and the end of the first connector facilitates its installation, reduces assembly difficulty, and enhances the sealing effect between the inner sealing sleeve and the first connector.

[0009] In some embodiments, the liquid-cooled connector assembly includes a second seal fixed between the inner sealing sleeve and the inner wall of the second insertion hole. Thus, the second seal, fixed between the inner sealing sleeve and the second connector, enhances the sealing effect on the first and second connectors through the cooperation of the second seal and the inner sealing sleeve. This design is simple and facilitates product manufacturing.

[0010] In some embodiments, the outer wall of the inner sealing sleeve and the inner wall of the second insertion hole are connected by threads. This threaded connection allows for a detachable connection between the inner sealing sleeve and the second connector, facilitating replacement and maintenance of the inner sealing sleeve.

[0011] In some embodiments, the liquid-cooled connector assembly includes a third seal, which is fixed between the outer wall of the first connector and the inner wall of the second insertion hole. Thus, the third seal, fixed between the outer wall of the first connector and the inner wall of the second insertion hole, enables multi-layer sealing of the first and second connectors through the third seal in conjunction with the inner sealing sleeve, further enhancing the sealing effect on the first and second connectors.

[0012] In some embodiments, the third seal includes a first limiting member and at least two third sealing rings. The first limiting member and at least two third sealing rings are fitted onto the outer wall of the first connector. The at least two third sealing rings are spaced apart along the direction in which the first connector extends, and the first limiting member is located between the two third sealing rings. Thus, the first limiting member, located between the two third sealing rings, can limit the relative position between the two third sealing rings, reducing the risk of a deterioration in the sealing effect due to changes in the relative position of the two third sealing rings during the assembly and disassembly of the first and second connectors.

[0013] In some embodiments, the third seal includes a second limiting member, which is sleeved on the outer wall of the first connector and located on the side of the third sealing ring away from the end of the first connector. Thus, by positioning the second limiting member on the side of the third sealing ring away from the end of the first connector, the relative position between the first limiting member and the two third sealing rings can be further defined, reducing the risk of a deterioration in the sealing effect due to changes in the relative position between the first limiting member and the two third sealing rings during the assembly and disassembly of the first and second connectors.

[0014] In some embodiments, the liquid-cooled connector assembly further includes an anti-detachment component, which is connected to the first connector and the second connector respectively to secure the first connector and the second connector. Thus, the anti-detachment component strengthens the securing effect of the first connector and the second connector, reducing the risk of the first connector and the second connector detaching during use.

[0015] In some embodiments, the liquid-cooled connector assembly includes a liquid-cooled plate, a first connector connected to the liquid-cooled plate, and a first insertion hole communicating with a flow channel within the liquid-cooled plate. Thus, the connection between the first connector and the liquid-cooled plate, and the communication between the first insertion hole and the flow channel within the liquid-cooled plate, enable the liquid-cooled plate to communicate with external devices via the first and second connectors, facilitating operations such as fluid replacement within the liquid-cooled plate.

[0016] In some embodiments, the liquid-cooled connector assembly includes a fourth seal fitted onto the outer side wall of the second connector away from the first connector. Thus, the fourth seal, fitted onto the outer side wall of the second connector away from the first connector, enhances the sealing effect when the second connector is connected to an external device.

[0017] To address the aforementioned problems, this application provides an electrical device that includes the battery device described above. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a vehicle according to one or more embodiments of this application;

[0020] Figure 2 This is an exploded structural diagram of a battery device according to one or more embodiments of this application;

[0021] Figure 3This is a schematic diagram of the structure of a liquid-cooled connector assembly according to one or more embodiments of this application;

[0022] Figure 4 yes Figure 3 The diagram shows the disassembled structure of the liquid cooling connector assembly.

[0023] Figure 5 yes Figure 3 The diagram shows a first cross-sectional view of the liquid-cooled connector assembly along the AA direction.

[0024] Figure 6 yes Figure 5 An enlarged schematic diagram of the structure within the dashed box in the liquid cooling connector assembly shown;

[0025] Figure 7 yes Figure 3 The diagram shows a second cross-sectional view of the liquid-cooled connector assembly along the AA direction.

[0026] Figure 8 yes Figure 3 The diagram shows a third section of the liquid-cooled connector assembly along the AA direction.

[0027] Figure 9 yes Figure 8 The enlarged schematic diagram of the structure within the dashed box in the liquid cooling connector assembly shown.

[0028] Reference numerals: Vehicle 1; Battery unit 2; Controller 3; Motor 4; Liquid cooling connector assembly 10; Housing 20; First part 21; Second part 22; Battery cell 30;

[0029] First connector 100; first insertion hole 110; second connector 200; second insertion hole 210; inner sealing sleeve 300; outer protrusion 310; first sealing element 410; first sealing ring 411; second sealing ring 412; second sealing element 420; third sealing element 430; first limiting element 431; third sealing ring 432; second limiting element 433; fourth sealing element 440; anti-detachment element 500; liquid cooling plate 600. Detailed Implementation

[0030] 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.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] 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.

[0034] 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 have an "or" relationship.

[0035] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0036] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0038] Energy conservation and emission reduction are key to sustainable development, which in turn promotes the adjustment of the energy structure and drives the development and application of battery technology. The key to the development of battery technology lies in electrochemical energy storage technology. Due to its advantages such as high energy density, good cycle capability, high operating voltage, environmental friendliness, and low self-discharge, it has been widely used in portable electronics, electric vehicles, and energy storage systems.

[0039] In battery devices, liquid cooling is typically used to cool individual battery cells. The liquid cooling structure needs to be connected to an external liquid cooling device via a connector. However, the connectors of existing liquid cooling structures and external liquid cooling devices have poor sealing performance and are prone to damage.

[0040] To address the technical problems existing in related technologies, this application provides a battery device and an electrical device. The battery device includes a liquid-cooled connector assembly, which includes a first connector, a second connector, and an inner sealing sleeve. The first connector and the second connector are inserted into each other to communicate with the first insertion hole of the first connector and the second insertion hole of the second connector. The inner sealing sleeve is located inside the first insertion hole and / or the second insertion hole and is sealed with the first connector and / or the second connector to improve the sealing effect of the first connector and the second connector. At the same time, the inner sealing sleeve can also reduce the risk of damage to the first connector and / or the second connector caused by sealing directly between the first connector and the second connector.

[0041] Specifically, this application provides an electrical device, which may include, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys may include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc. The electrical device may include a battery, which can provide electrical power to achieve the corresponding function.

[0042] This application also provides an electric vehicle that may include a battery device.

[0043] Please refer to Figure 1 , Figure 1 This is a structural schematic diagram of a vehicle according to one or more embodiments of this application.

[0044] Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 2 is installed inside vehicle 1, and the battery device 2 can be located at the bottom, front, or rear of vehicle 1. The battery device 2 can be used to power vehicle 1; for example, it can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 3 and a motor 4. The controller 3 controls the battery device 2 to supply power to the motor 4, for example, to meet the power needs of vehicle 1 during starting, navigation, and driving.

[0045] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0046] To improve the performance of electrical devices, this application also provides a battery device, see [link to relevant documentation]. Figure 2 , Figure 2 This is an exploded structural diagram of a battery device according to one or more embodiments of this application.

[0047] The shape of the battery device 2 may include, but is not limited to, a square, cylindrical or other arbitrary shapes.

[0048] In some embodiments, the battery device 2 may include a housing 20 and a battery cell 30, with the battery cell 30 housed within the housing 20. The housing 20 provides a receiving space for the battery cell 30, and the housing 20 may employ various structures. In some embodiments, the housing 20 may include a first portion 21 and a second portion 22, which overlap each other, and together define a receiving space for accommodating the battery cell 30. The second portion 22 may be a hollow structure with one open end, and the first portion 21 may be a plate-like structure, with the first portion 21 covering the open side of the second portion 22 so that the first portion 21 and the second portion 22 together define the receiving space; alternatively, the first portion 21 and the second portion 22 may both be hollow structures with one open side, with the open side of the first portion 21 covering the open side of the second portion 22.

[0049] In the battery device 2, there can be multiple battery cells 30, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 30 are connected in both series and parallel configurations. Multiple battery cells 30 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 30 is housed within the housing 20. Alternatively, the battery device 2 can also consist of multiple battery cells 30 first connected in series, parallel, or in a mixed manner to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 20. The battery device 2 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 30.

[0050] The battery cell 30 is manufactured using two methods: stacking and winding. Stacked cells offer uniform current collection, lower internal resistance, and higher specific power. However, to improve precision, extremely high mold precision is required, leading to high equipment investment, complex processes, and low production efficiency. Winded cells are simpler to manufacture, with less stringent precision requirements for equipment during the sheet preparation and assembly processes. They offer high production efficiency and lower costs. In terms of performance, wound cells possess excellent high and low temperature performance, very rapid charging, ultra-long lifespan, stable high output voltage, robust structure, and strong shock resistance.

[0051] The battery device includes a liquid cooling connector assembly 10, which can be used to connect the cooling system inside the battery device to external devices outside the battery device, such as the water cooling system inside the battery device and an external supply device for providing coolant.

[0052] Specifically, see Figures 3 to 5 , Figure 3 This is a schematic diagram of the structure of a liquid-cooled connector assembly according to one or more embodiments of this application. Figure 4 yes Figure 3 The diagram shows the disassembled structure of the liquid cooling connector assembly. Figure 5 yes Figure 3 The diagram shows a first cross-sectional view of the liquid-cooled connector assembly along the AA direction.

[0053] The liquid cooling connector assembly 10 includes a first connector 100, a second connector 200, and an inner sealing sleeve 300. The first connector 100 is provided with a first insertion hole 110; the second connector 200 is provided with a second insertion hole 210, and the second connector 200 is sleeved on the first connector 100 through the second insertion hole 210 so that the first insertion hole 110 and the second insertion hole 210 are connected; the inner sealing sleeve 300 is located in the second insertion hole 210, and the inner sealing sleeve 300 is fixedly connected to at least one of the first connector 100 and the second connector 200, and the inner sealing sleeve 300 is in a sealing fit with at least one of the first connector 100 and the second connector 200.

[0054] One of the first connector 100 and the second connector 200 can be used to connect to an external device, and the other can be used to connect to the water-cooling structure of the battery device. The first insertion hole 110 can be located inside the first connector 100, so that the first connector 100 can be in the shape of a hollow sleeve. Correspondingly, the second insertion hole 210 can be located inside the second connector 200, so that the second connector 200 can be in the shape of a hollow sleeve. The shapes of the first insertion hole 110 and the second insertion hole 210 can be set according to the actual situation. For example, the inner sidewalls of the first insertion hole 110 and the second insertion hole 210 can be cylindrical or prismatic. In this embodiment, the inner wall of the second insertion hole 210 can correspond to the shape of the outer wall of the first connector 100. For example, both the inner wall of the second insertion hole 210 and the outer wall of the first connector 100 can be columnar, so that the second connector 200 can be sleeved on the outside of the first connector 100 through the second insertion hole 210. After the first connector 100 and the second connector 200 are inserted into each other, the first insertion hole 110 and the second insertion hole 210 are interconnected, thereby allowing the components connected to the first connector 100 and the components connected to the second connector 200 to communicate with each other through the first insertion hole 110 and the second insertion hole 210.

[0055] The inner sealing sleeve 300 is located in the second insertion hole 210 and is fixedly connected to at least one of the first connector 100 and the second connector 200. For example, the inner sealing sleeve 300 may be located in the second insertion hole 210 and fixedly connected to the second connector 200. Alternatively, the inner sealing sleeve 300 may be located in the second insertion hole 210 and extend into the first insertion hole 110, where it is fixedly connected to the first connector 100. Or, the inner sealing sleeve 300 may be located in the second insertion hole 210, and one end of the inner sealing sleeve 300 may be fixedly supported at the end of the first connector 100, so that the inner sealing sleeve 300 is fixedly connected to the first connector 100.

[0056] The inner sealing sleeve 300 can be sealed and fitted with either the first connector 100 or the second connector 200, or simultaneously sealed and fitted with both the first connector 100 and the second connector 200. The inner sealing sleeve 300 may at least partially have a sealing layer with good sealing properties, such as rubber. The inner sealing sleeve 300 can directly contact the first connector 100 and / or the second connector 200 through the sealing layer, allowing the inner sealing sleeve 300 to seal and fit with the first connector 100 and / or the second connector 200 on its own. Alternatively, the inner sealing sleeve 300 can indirectly contact the first connector 100 and / or the second connector 200 through other sealing structures with good sealing performance, allowing the inner sealing sleeve 300 to seal and fit with the first connector 100 and / or the second connector 200 indirectly. The inner sealing sleeve 300 can seal against the inner wall of the second insertion hole 210, and / or the inner sealing sleeve 300 can seal against the end of the first connector 100, and / or the inner sealing sleeve 300 can seal against the inner wall of the first insertion hole 110. The inner sealing sleeve 300 can be sleeve-shaped. After the inner sealing sleeve 300 is fixed, the first insertion hole 110 and the second insertion hole 210 can remain in communication through the hollow channel of the inner sealing sleeve 300.

[0057] In the above embodiments, the second connector 200 is sleeved on the first connector 100 through the second insertion hole 210, so that the first insertion hole 110 and the second insertion hole 210 are connected, which facilitates the flow of fluid through the first insertion hole 110 and the second insertion hole 210. The inner sealing sleeve 300 is in a sealing fit with at least one of the first connector 100 and the second connector 200, which can seal the first connector 100 and the second connector 200, improve the sealing effect of the first connector 100 and the second connector 200, and at the same time, the inner sealing sleeve 300 can reduce the risk of damage to the first connector 100 and / or the second connector 200 caused by sealing directly between the first connector 100 and the second connector 200.

[0058] Combination Figure 6 , Figure 6 yes Figure 5 The enlarged schematic diagram of the structure within the dashed box in the liquid cooling connector assembly shown.

[0059] The liquid-cooled connector assembly 10 includes a first seal 410, which is fixed between the inner sealing sleeve 300 and the first connector 100. The material of the first seal 410 may include, but is not limited to, polytetrafluoroethylene, metal, or polyetherketone. The shape of the first seal 410 can be set according to actual conditions; for example, the first seal 410 may be arc-shaped, block-shaped, sleeve-shaped, etc. For example, the first seal 410 may include multiple sealing segments, which can be fixed between the inner sealing sleeve 300 and the first connector 100. The multiple sealing segments can be stacked and clamped in the same position by the inner sealing sleeve 300 and the first connector 100, or the multiple sealing segments can be spaced apart, with the inner sealing sleeve 300 and the first connector 100 clamping the multiple sealing segments in different positions, or the multiple sealing segments can be partially stacked and partially spaced apart, etc. In this way, the sealing effect on the first connector 100 and the second connector 200 can be enhanced by the cooperation of the first seal 410 and the inner sealing sleeve 300. The structure is simple and easy to manufacture.

[0060] Furthermore, the inner sealing sleeve 300 is partially located in the first insertion hole 110, and the first sealing element 410 includes a first sealing ring 411, which is fixed between the inner sealing sleeve 300 and the inner wall of the first insertion hole 110. The first connector 100 is located in the second insertion hole 210, and the inner sealing sleeve 300 may be partially located in the first insertion hole 110, with another portion extending outward and located in the second insertion hole 210. The radial dimension of the inner sealing sleeve 300 may be slightly smaller than the radial dimension of the first insertion hole 110, allowing the inner sealing sleeve 300 to be radially limited through the first insertion hole 110. The first sealing ring 411 can be annular. It can be pre-fitted onto the outer surface of the inner sealing sleeve 300. After the first connector 100 and the second connector 200 are inserted and engaged, the first sealing ring 411 is fixed between the inner wall of the first insertion hole 110 and the inner sealing sleeve 300. This enhances the sealing effect between the inner sealing sleeve 300 and the first connector 100. The structure is simple and easy to manufacture. The number of first sealing rings 411 can be set according to actual conditions; for example, it can be two, three, or other quantities. Multiple first sealing rings 411 can be spaced apart along the direction extending from the first insertion hole 110.

[0061] In some embodiments, the inner sealing sleeve 300 includes an outward protrusion 310 located at the end of the first connector 100, and the first sealing member 410 includes a second sealing ring 412 fixed between the outward protrusion 310 and the end of the first connector 100. The outward protrusion 310 may be annular, and may be located at the end or middle of the inner sealing sleeve 300, such as... Figure 6As shown, the protrusion 310 is located in the middle of the inner sealing sleeve 300, so that part of the inner sealing sleeve 300 extends into the first insertion hole 110. In some other embodiments, the protrusion 310 may also be located at the end of the inner sealing sleeve 300, that is, the inner sealing sleeve 300 does not extend into the first insertion hole 110. One side surface of the protrusion 310 abuts against the end of the first connector 100, and the other side surface abuts against the step of the second connector 200. The second sealing ring 412 may be annular. The second sealing ring 412 may be pre-placed at the end of the inner first connector 100. After the first connector 100 and the second connector 200 are inserted and engaged, the first sealing ring 411 can be fixed between the protrusion 310 and the end of the first connector 100. This enhances the sealing effect between the inner sealing sleeve 300 and the first connector 100 through the first sealing ring 411. The structure is simple and easy to manufacture. The number of first sealing rings 411 can also be two, with one first sealing ring 411 fixed between the outer protrusion 310 and the first connector 100, and the other first sealing ring 411 fixed between the outer protrusion 310 and the step of the second connector 200.

[0062] See Figure 7 , Figure 7 yes Figure 3 The diagram shows a second cross-sectional view of the liquid-cooled connector assembly along the AA direction.

[0063] The outer wall of the inner sealing sleeve 300 and the inner wall of the second insertion hole 210 are connected by threads. At least a portion of the outer wall of the inner sealing sleeve 300 may have external threads, and at least a portion of the inner wall of the second insertion hole 210 may have internal threads, allowing the inner sealing sleeve 300 to be threadedly connected to the second insertion hole 210. In one application scenario, the inner sealing sleeve 300 can be first threadedly connected to the second connector 200, and then inserted into the first connector 100 along with the second connector 200. This threaded connection allows for detachable connection of the inner sealing sleeve 300 and the second connector 200, facilitating replacement and maintenance of the inner sealing sleeve 300. In other embodiments, the inner sealing sleeve 300 and the second connector 200 can also be pre-fixed by snap-fitting, welding, or other methods.

[0064] See Figure 4 , Figure 8 and Figure 9 , Figure 8 yes Figure 3 The diagram shows a third section of the liquid-cooled connector assembly along the AA direction. Figure 9 yes Figure 8 The enlarged schematic diagram of the structure within the dashed box in the liquid cooling connector assembly shown.

[0065] The liquid-cooled connector assembly 10 includes a second seal 420, which is fixed between the inner sealing sleeve 300 and the inner wall of the second insertion hole 210. The shape of the second seal 420 can be set according to actual conditions; for example, the second seal 420 can be arc-shaped, block-shaped, sleeve-shaped, etc. Exemplarily, the second seal 420 may include multiple sealing segments, which can be fixed between the inner sealing sleeve 300 and the second connector 200. These multiple sealing segments can be stacked and clamped in the same position by the inner sealing sleeve 300 and the second connector 200, or they can be spaced apart, with the inner sealing sleeve 300 and the second connector 200 clamping them in different positions, or they can be partially stacked and partially spaced, etc. This allows the second seal 420 and the inner sealing sleeve 300 to cooperate in strengthening the sealing effect on the first connector 100 and the second connector 200, resulting in a simple structure that is easy to manufacture. In some embodiments, such as... Figure 9 As shown, the liquid cooling connector assembly 10 may include a first seal 410 and a second seal 420. The first seal 410 is fixed between the inner sealing sleeve 300 and the first connector 100, and the second seal 420 is fixed between the inner sealing sleeve 300 and the inner wall of the second insertion hole 210.

[0066] In some embodiments, the liquid-cooled connector assembly 10 includes a third seal 430, which is fixed between the outer sidewall of the first connector 100 and the inner sidewall of the second insertion hole 210. The shape of the third seal 430 can be set according to actual conditions; for example, the third seal 430 can be arc-shaped, block-shaped, sleeve-shaped, etc. For example, the third sealing element 430 may include multiple sealing segments. The multiple sealing segments may be fixed between the outer wall of the first connector 100 and the inner wall of the second insertion hole 210. The multiple sealing segments may be stacked and sandwiched in the same position by the outer wall of the first connector 100 and the inner wall of the second insertion hole 210, or the multiple sealing segments may be spaced apart, with the outer wall of the first connector 100 and the inner wall of the second insertion hole 210 sandwiching the multiple sealing segments in different positions, or the multiple sealing segments may be partially stacked and partially spaced, etc. In this way, the third sealing element 430, in conjunction with the inner sealing sleeve 300, can perform multi-layer sealing on the first connector 100 and the second connector 200, further enhancing the sealing effect on the first connector 100 and the second connector 200.

[0067] Furthermore, the third sealing element 430 includes a first limiting element 431 and at least two third sealing rings 432. The first limiting element 431 and at least two third sealing rings 432 are sleeved on the outer wall of the first connector 100. The at least two third sealing rings 432 are spaced apart along the direction of extension of the first connector 100, and the first limiting element 431 is located between the two third sealing rings 432. Both the third sealing rings 432 and the first limiting element 431 can be annular. The first limiting element 431 and the two third sealing rings 432 are fixed between the outer wall of the first connector 100 and the inner wall of the second insertion hole 210. The material of the first limiting element 431 can be set according to the actual situation. For example, the first limiting element 431 can be made of a material with good sealing properties, such as rubber, so that the first limiting element 431 can also have sealing performance. The first limiting member 431 is located between the two third sealing rings 432, and can limit the relative position between the two third sealing rings 432 by limiting the relative position between the two third sealing rings 432 during the disassembly and assembly of the first connector 100 and the second connector 200, thereby reducing the risk of a deterioration in the sealing effect due to changes in the relative position between the two third sealing rings 432. In some application scenarios, such as Figure 9 As shown, the inner wall of the second insertion hole 210 may be provided with a step. The first limiting member 431 and the third sealing ring 432 can be pre-installed on the inner wall of the second insertion hole 210, so that the third sealing ring 432 abuts against the step. Then, the first connector 100 and the second connector 200 are inserted and engaged to fix the third sealing ring 432 and the first limiting member 431 in the predetermined position.

[0068] Furthermore, the third sealing element 430 includes a second limiting element 433, which is sleeved on the outer wall of the first connector 100. The second limiting element 433 is located on the side of the third sealing ring 432 away from the end of the first connector 100. The second limiting element 433 may be annular. The second limiting element 433 is located on the side of the third sealing ring 432 away from the end of the first connector 100, so that the second limiting element 433 is further away from the opening of the first connector 100 relative to the third sealing ring 432. The material of the second limiting element 433 can be set according to actual conditions. For example, the second limiting element 433 may be made of a material with good sealing properties, such as rubber, so that the second limiting element 433 also has sealing performance. In this embodiment, the second limiting element 433 can further limit the relative position between the first limiting element 431 and the two third sealing rings 432, reducing the risk of a deterioration in the sealing effect due to changes in the relative position between the first limiting element 431 and the two third sealing rings 432 during the disassembly and assembly of the first connector 100 and the second connector 200.

[0069] In some embodiments, the liquid-cooled connector assembly 10 further includes an anti-detachment member 500, which connects the first connector 100 and the second connector 200 respectively to secure the first connector 100 and the second connector 200. The shape of the anti-detachment member 500 can be set according to actual conditions, such as... Figure 4 As shown, the anti-detachment component 500 can have two fixing parts. The second connector 200 can have an opening structure at its port. After the first connector 100 and the second connector 200 are inserted and engaged, the anti-detachment component 500 can be inserted into the opening structure of the second connector 200, so that one fixing part of the anti-detachment component 500 is fixedly connected to the second connector 200, and the other fixing part is fixedly connected to the first connector 100, so that the first connector 100 and the second connector 200 can be fixed through the anti-detachment component 500. In some other embodiments, the anti-detachment component 500 can also have other structures, as long as it can simultaneously fix the anti-detachment component 500 to the first connector 100 and the second connector 200, so that the first connector 100 and the second connector 200 are relatively fixed, thereby improving the risk of the first connector 100 and the second connector 200 detaching during use.

[0070] In some embodiments, the liquid-cooled connector assembly 10 includes a liquid-cooled plate 600, a first connector 100 connected to the liquid-cooled plate 600, and a first insertion hole 110 communicating with a flow channel within the liquid-cooled plate 600. The liquid-cooled plate 600 may have a flow channel for liquid flow, allowing direct contact between the liquid-cooled plate 600 and a battery cell. The liquid within the liquid-cooled plate 600 can exchange heat with the battery cell to heat or cool it. The flow channel within the liquid-cooled plate 600 can communicate with the first insertion hole 110 of the first connector 100. The second connector 200 can simultaneously connect to an external device and the first connector 100, enabling the liquid-cooled plate 600 to communicate with an external device via the first connector 100 and the second connector 200, facilitating operations such as fluid replacement within the liquid-cooled plate 600. The liquid-cooled plate 600 may be integrally formed with the first connector 100, or the liquid-cooled plate 600 may be welded to the first connector 100.

[0071] In some embodiments, the liquid-cooled connector assembly 10 includes a fourth seal 440, which is sleeved on the outer side wall of the second connector 200 away from the first connector 100. The fourth seal 440, sleeved on the outer side wall of the second connector 200 away from the first connector 100, enhances the sealing effect when the second connector 200 is connected to an external device. The fourth seal 440 may include a fourth sealing ring, and a limiting groove may be provided on the second connector 200. The fourth sealing ring can be sleeved within the limiting groove to facilitate the second connector 200 carrying the fourth sealing ring and engaging with the external device. Multiple fourth sealing rings may be provided, spaced apart, with each fourth sealing ring corresponding to a limiting groove.

[0072] In summary, the second connector 200 is fitted onto the first connector 100 through the second insertion hole 210, so that the first insertion hole 110 and the second insertion hole 210 are connected, facilitating fluid flow through the first insertion hole 110 and the second insertion hole 210. Furthermore, the inner sealing sleeve 300 is in a sealing fit with at least one of the first connector 100 and the second connector 200, which can seal the first connector 100 and the second connector 200, improving the sealing effect of the first connector 100 and the second connector 200. At the same time, the inner sealing sleeve 300 can also reduce the risk of damage to the first connector 100 and / or the second connector 200 caused by sealing directly between the first connector 100 and the second connector 200.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, The battery device includes a liquid-cooled connector assembly, the liquid-cooled connector assembly comprising: The first connector is provided with a first insertion hole; The second connector is provided with a second insertion hole. The second connector is sleeved on the first connector through the second insertion hole so that the first insertion hole and the second insertion hole are connected. An inner sealing sleeve is located in the second insertion hole. The inner sealing sleeve is fixedly connected to at least one of the first connector and the second connector, and the inner sealing sleeve is in a sealing fit with at least one of the first connector and the second connector.

2. The battery device according to claim 1, characterized in that, The liquid-cooled connector assembly includes a first seal, which is fixed between the inner sealing sleeve and the first connector.

3. The battery device according to claim 2, characterized in that, The inner sealing sleeve is located in the first insertion hole, and the first sealing element includes a first sealing ring, which is fixed between the inner sealing sleeve and the inner wall of the first insertion hole.

4. The battery device according to claim 2, characterized in that, The inner sealing sleeve includes an outward protrusion located at the end of the first connector. The first sealing element includes a second sealing ring, which is fixed between the outward protrusion and the end of the first connector.

5. The battery device according to claim 1, characterized in that, The liquid-cooled connector assembly includes a second seal, which is fixed between the inner sealing sleeve and the inner wall of the second insertion hole.

6. The battery device according to claim 1, characterized in that, The outer wall of the inner sealing sleeve and the inner wall of the second insertion hole are connected by threads.

7. The battery device according to any one of claims 1 to 6, characterized in that, The liquid-cooled connector assembly includes a third seal fixed between the outer wall of the first connector and the inner wall of the second insertion hole.

8. The battery device according to claim 7, characterized in that, The third sealing element includes a first limiting element and at least two third sealing rings. The first limiting element and at least two third sealing rings are sleeved on the outer side wall of the first joint. The at least two third sealing rings are spaced apart along the direction of extension of the first joint. The first limiting element is located between the two third sealing rings.

9. The battery device according to claim 8, characterized in that, The third sealing element includes a second limiting element, which is sleeved on the outer wall of the first joint and located on the side of the third sealing ring away from the end of the first joint.

10. The battery device according to any one of claims 1 to 6, characterized in that, The liquid-cooled connector assembly also includes an anti-detachment component, which connects the first connector and the second connector respectively to fix the first connector and the second connector.

11. The battery device according to any one of claims 1 to 6, characterized in that, The liquid-cooled connector assembly includes a liquid-cooled plate, the first connector is connected to the liquid-cooled plate, and the first insertion hole communicates with the flow channel in the liquid-cooled plate.

12. The battery device according to any one of claims 1 to 6, characterized in that, The liquid-cooled connector assembly includes a fourth seal, which is fitted onto the outer wall of the second connector away from the first connector.

13. An electrical appliance, characterized in that, The electrical device includes the battery device as described in any one of claims 1 to 12.

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