Battery device, tube body and electric equipment

Abstract

The utility model discloses a battery device, a tube body and electric equipment, and the battery device comprises a battery box body which is provided with a containing space; the battery monomers are arranged in the accommodating space; the heat exchange mechanism is arranged in the accommodating space and is used for carrying out heat exchange with the battery monomers and the external environment; the heat exchange mechanism is provided with a heat exchange cavity and a connector communicating with the heat exchange cavity, and the connector is provided with a first limiting part; the connector is connected with the pipe body in an inserted mode so as to communicate the pipe body with the heat exchange cavity; the pipe body is matched with the first limiting part to limit the opposite movement of the pipe body and the joint; the end, used for being connected with the connector, of the pipe body is provided with a reinforcing part used for further limiting opposite movement. According to the battery device, the connection strength between the joint and the pipe body can be improved, and the influence of insufficient connection strength between the joint and the pipe body on the heat exchange effect is reduced, so that the reliability of the battery device can be improved.

Description

TECHNICAL FIELD

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

[0002] With the development of battery technology, battery devices are applied to more and more fields, and gradually replace traditional petrochemical energy in the field of automobile power. The battery device realizes heat exchange between the battery monomer and the external environment through a heat exchange mechanism. The heat exchange mechanism is connected with the pipe body for the inlet and outlet of the heat exchange medium through a joint to form a heat exchange loop.

[0003] In the related art, the joint and the pipe body have a risk of loosening, which affects the heat exchange effect of the heat exchange mechanism, thereby reducing the reliability of the battery device. Therefore, how to improve the connection strength between the joint and the pipe body to improve the reliability of the battery device is a technical problem to be solved in the field at present. UTILITY MODEL CONTENT

[0004] In view of the above problems, the present application provides a battery device, a pipe body and an electric equipment to improve the connection strength between the joint and the pipe body, and thereby improve the reliability of the battery device.

[0005] In a first aspect, the present application provides a battery device, which comprises: a battery box body forming a containing space; a battery monomer arranged in the containing space; a heat exchange mechanism arranged in the containing space and used for heat exchange with the battery monomer and the external environment; the heat exchange mechanism is provided with a heat exchange cavity and a joint in communication with the heat exchange cavity, and the joint is provided with a first limiting portion; a pipe body, the joint and the pipe body are inserted and arranged to communicate the pipe body and the heat exchange cavity; the pipe body cooperates with the first limiting portion to limit the opposite movement of the pipe body and the joint; wherein one end of the pipe body for connecting the joint is provided with a reinforcing portion for further limiting the opposite movement. By arranging the first limiting portion on the pipe body, the first limiting portion is used to cooperate with the pipe body to limit the opposite movement of the pipe body and the joint, thereby improving the connection strength and stability of the joint and the pipe body. At the same time, the reinforcing portion is arranged at the end of the pipe body for connecting the joint, so that the joint and the pipe body can be more closely matched, and the opposite movement of the pipe body and the joint can be further limited, thereby further improving the connection strength and stability of the joint and the pipe body. By arranging the first limiting portion and the reinforcing portion, the opposite movement of the pipe body and the joint can be limited, the connection strength and stability of the joint and the pipe body can be improved, the pull-out force between the joint and the pipe body can be improved, the risk of joint loosening or disengagement from the pipe body can be reduced, the heat exchange mechanism can effectively transfer heat, thereby improving the heat exchange efficiency and effect of the heat exchange mechanism, and the risk of thermal runaway of the battery device can be reduced. Therefore, the reliability of the battery device can be improved.

[0006] In some embodiments, the reinforcing part comprises a second limiting part arranged on the surface of the pipe body towards the joint, and the second limiting part is used for clamping with the first limiting part to limit the opposite movement when the joint is inserted into the pipe body. By clamping the second limiting part with the first limiting part, the opposite movement of the pipe body and the joint can be limited, the pull-out force between the joint and the pipe body is improved, and the connection strength between the joint and the pipe body is enhanced.

[0007] In some embodiments, the second limiting part is arranged along the circumference of the pipe body and is spaced apart from the two ends arranged along the circumference. By spacing apart the second limiting part from the two ends arranged along the circumference of the pipe body, the structural strength of the area between the two ends of the second limiting part arranged along the circumference of the pipe body is low, so that the insertion resistance of the joint to the second limiting part is reduced during the insertion of the joint into the pipe body, thereby reducing the assembly difficulty of the joint and the pipe body, and making the installation process smoother.

[0008] In some embodiments, the first limiting part is arranged on the outer surface of the joint, and the second limiting part is arranged on the inner surface of the pipe body, and the joint is at least partially inserted into the pipe body. By arranging the first limiting part on the outer surface of the joint and the second limiting part on the inner surface of the pipe body, the first limiting part and the second limiting part can be clamped when the joint is at least partially inserted into the pipe body, thereby limiting the opposite movement of the pipe body and the joint.

[0009] In some embodiments, the second limiting part is provided with a first guide surface on the side towards the insertion port of the pipe body, the first guide surface is arranged inclinedly relative to the inner surface of the pipe body and is used for guiding the insertion of the first limiting part into the pipe body; and the second limiting part is provided with a first limiting surface on the side away from the insertion port, and the first limiting surface is used for clamping with the first limiting part when the joint is inserted into the pipe body. By arranging the first guide surface on the second limiting part for guiding the insertion of the first limiting part into the pipe body and the second limiting surface for clamping with the first limiting part, on the one hand, the first guide surface can reduce the insertion resistance during the insertion of the joint into the pipe body, so that the insertion process is smoother, thereby improving the assembly efficiency of the joint and the pipe body, and on the other hand, the first limiting surface can limit the movement of the first limiting part in the direction opposite to the insertion direction of the pipe body, thereby improving the pull-out force between the joint and the pipe body, and reducing the risk of loosening or disengaging of the joint from the pipe body.

[0010] In some embodiments, the first guide surface is a plane or an arc surface, and the included angle between the first guide surface and the inner surface of the pipe body is greater than 90°. The arrangement of the first guide surface can reduce the insertion resistance of the joint, so that the first limiting part of the joint can smoothly pass through the position of the second limiting part, and the insertion efficiency of the joint into the pipe body can be improved.

[0011] In some embodiments, the first limiting surface is a flat surface or an arc surface, and an angle between the first limiting surface and the inner surface of the pipe body is less than or equal to 90°. In this way, the relative position stability of the first limiting surface and the first limiting portion when they are clamped together can be improved, the risk of the first limiting portion of the connector sliding along the first limiting surface towards the plug-in port can be reduced, the pull-out force between the connector and the pipe body can be significantly improved, and the risk of the first limiting portion rubbing against the inner surface of the pipe body can be reduced, thereby improving the problems of pipe body blockage, wear and the like.

[0012] In some embodiments, along the axial direction of the pipe body, the reinforcing portion is located on the side of the first guide surface close to the plug-in port. When the connector falls off from the pipe body, it will move away from the pipe body along the axial direction of the pipe body, that is, in the opposite direction of the plug-in direction. By locating the reinforcing portion on the side of the first guide surface close to the plug-in port, on the one hand, the structural strength of the second limiting portion can be enhanced, thereby improving the limiting effect of the second limiting portion on the first limiting portion, so as to further improve the pull-out force between the connector and the pipe body; on the other hand, the tightness of the connection between the connector and the pipe body can be improved, which can not only reduce the risk of the connector rubbing against the inner surface of the pipe body due to loosening, but also reduce the risk of leakage of the heat exchange medium in the heat exchange cavity from between the pipe body and the connector, thereby improving the durability and reliability of the battery device and reducing maintenance costs.

[0013] In some embodiments, along the axial direction of the pipe body, the reinforcing portion is adjacent to the first guide surface. When the connector falls off from the pipe body, it will move away from the pipe body along the axial direction of the pipe body, that is, in the opposite direction of the plug-in direction. By locating the reinforcing portion adjacent to the first guide surface along the axial direction of the pipe body, the structural strength of the second limiting portion can be enhanced, the pull-out force and tightness between the connector and the pipe body can be improved, and the possibility of loosening of the first limiting portion in the opposite direction of the plug-in direction can be reduced, thereby improving the assembly stability of the two.

[0014] In some embodiments, the second limiting portion includes a protruding portion provided on the inner surface of the pipe body and extending towards the axis of the pipe body; the first limiting portion is provided with a second limiting surface which is clamped with the protruding portion when the connector is plugged into the pipe body. By locating the protruding portion on the inner surface of the pipe body and extending towards the inside of the pipe body, the front end of the second limiting surface of the first limiting portion and the protruding portion are clamped in the plug-in direction of the connector, the protruding portion can limit the movement of the connector in the direction opposite to the plug-in direction of the connector in the pipe body, and at the same time, the first limiting portion can limit the movement of the pipe body in the same direction as the plug-in direction of the connector in the pipe body, thereby limiting the opposite movement of the pipe body and the connector, enhancing the connection strength between the connector and the pipe body, and improving the pull-out force between the connector and the pipe body.

[0015] In some embodiments, the reinforcing portion is fixedly connected to or integrally formed with the pipe body. If the reinforcing portion is integrally formed with the pipe body, the stability of the structure between the reinforcing portion and the pipe body can be improved, thereby improving the limiting effect of the reinforcing portion on the first limiting portion, and further improving the pull-out force between the joint and the pipe body. If the reinforcing portion is fixedly connected to the pipe body, the setting position of the reinforcing portion can be changed according to different specifications of the joint, and the reinforcing portion can be repaired or replaced when it is worn, thereby improving the design flexibility and the convenience of repair.

[0016] In some embodiments, along the radial direction of the pipe body, the size of the region of the pipe body corresponding to the first limiting portion is greater than the size of other regions of the pipe body, so as to form the reinforcing portion; and / or the material strength of the region of the pipe body corresponding to the first limiting portion is greater than the material strength of other regions of the pipe body, so as to form the reinforcing portion. In this way, the deformation resistance of the reinforcing portion can be improved, so that the reinforcing portion is not prone to deformation under the action of the joint, thereby improving the stability of the clamping of the reinforcing portion and the first limiting portion of the joint, and the limiting effect of limiting the opposite movement of the pipe body and the joint can be significantly improved.

[0017] In some embodiments, the reinforcing portion includes a reinforcing rib provided on the outer surface of the pipe body. By providing the reinforcing rib on the outer surface of the pipe body, the structural strength of the region of the pipe body corresponding to the reinforcing portion can be improved, thereby improving the connection strength and stability of the pipe body and the joint, and further improving the pull-out force between the joint and the pipe body.

[0018] In some embodiments, the reinforcing rib is arranged along the circumferential direction of the pipe body and is spaced apart between two ends arranged along the circumferential direction. By spacing the two ends of the reinforcing rib arranged along the circumferential direction of the pipe body, the insertion resistance of the reinforcing rib to the joint can be reduced without affecting the pull-out force between the joint and the pipe body, thereby reducing the assembly difficulty of the joint and the pipe body, and making the installation process smoother.

[0019] In some embodiments, the pipe body comprises at least one first pipe body layer and at least one second pipe body layer, the first pipe body layer is sleeved outside the second pipe body layer, and the second pipe body layer or the first pipe body layer close to the joint is a flexible layer. By sleeving the first pipe body layer outside the second pipe body layer and setting the second pipe body layer or the first pipe body layer close to the joint as a flexible layer, on the one hand, the first pipe body layer can protect the second pipe body layer, reducing the risk of excessive deformation or damage of the second pipe body layer, and at the same time, the second pipe body layer and the flexible layer of the first pipe body layer can absorb external stress when the pipe body is impacted by external force or vibrates, reducing the risk of deformation or fracture of the pipe body and improving the durability of the pipe body; on the other hand, by setting the second pipe body layer or the first pipe body layer close to the joint as a flexible pipe, when the joint and the pipe body are inserted and arranged, the flexible pipe can not only provide better sealing performance, so that the pipe body and the joint can be sealed and connected, thereby reducing the risk of leakage of the heat exchange medium in the pipe body and the heat exchange cavity from the pipe body and the joint, but also can improve the pull-off force between the joint and the pipe body, so that the reliability of the battery device is improved.

[0020] In a second aspect, the present application provides a pipe body, which is used in a heat exchange mechanism of a battery device, the heat exchange mechanism is provided with a heat exchange cavity and a joint in communication with the heat exchange cavity, the joint is provided with a first limiting portion; the joint and the pipe body are inserted and arranged to communicate the pipe body and the heat exchange cavity; the pipe body cooperates with the first limiting portion to limit the opposite movement of the pipe body and the joint; wherein one end of the pipe body for connecting the joint is provided with a reinforcing portion for further limiting the opposite movement. By arranging the first limiting portion on the pipe body, the first limiting portion is used to cooperate with the pipe body to limit the opposite movement of the pipe body and the joint, thereby improving the connection strength and stability of the joint and the pipe body, and by arranging the reinforcing portion on the end of the pipe body for connecting the joint, the joint and the pipe body can be more closely matched, which can further limit the opposite movement of the pipe body and the joint, thereby further improving the connection strength and stability of the joint and the pipe body. By arranging the first limiting portion and the reinforcing portion, the opposite movement of the pipe body and the joint can be limited, the connection strength and stability of the joint and the pipe body are improved, the pull-off force between the joint and the pipe body is improved, the risk of joint loosening or disengagement from the pipe body is reduced, the heat exchange mechanism can effectively transfer heat, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange mechanism, and the risk of thermal runaway of the battery device is reduced, so the reliability of the battery device is improved.

[0021] In some embodiments, the reinforcing portion comprises a second limiting portion arranged on the surface of the pipe body facing the joint, and the second limiting portion is used to be clamped with the first limiting portion to limit the opposite movement when the joint and the pipe body are inserted. By clamping the second limiting portion and the first limiting portion, the opposite movement of the pipe body and the joint can be limited to improve the pull-off force between the joint and the pipe body, thereby enhancing the connection strength between the joint and the pipe body.

[0022] In some embodiments, the second limiting part is arranged along the circumference of the pipe body and is spaced apart from the two ends arranged along the circumference of the pipe body. By arranging the second limiting part along the circumference of the pipe body and spacing it apart from the two ends arranged along the circumference of the pipe body, the structural strength of the region between the two ends of the pipe body along the circumference of the pipe body is reduced, so that the insertion resistance of the second limiting part to the joint is reduced during the insertion of the joint into the pipe body, thereby reducing the assembly difficulty of the joint and the pipe body, and making the installation process smoother.

[0023] In some embodiments, the first limiting part is arranged on the outer surface of the joint, and the second limiting part is arranged on the inner surface of the pipe body, and the joint is at least partially inserted into the pipe body. By arranging the first limiting part on the outer surface of the joint and the second limiting part on the inner surface of the pipe body, the first limiting part and the second limiting part can be clamped when the joint is at least partially inserted into the pipe body, thereby limiting the opposite movement of the pipe body and the joint.

[0024] In some embodiments, the second limiting part is provided with a first guide surface on the side facing the insertion port of the pipe body, and the first guide surface is arranged inclinedly relative to the inner surface of the pipe body, for guiding the insertion of the first limiting part into the pipe body; and the second limiting part is provided with a first limiting surface on the side away from the insertion port, for clamping the first limiting part when the joint is inserted into the pipe body. By arranging the first guide surface on the second limiting part for guiding the insertion of the first limiting part into the pipe body and the second limiting surface for clamping the first limiting part, on the one hand, the first guide surface can reduce the insertion resistance during the insertion of the joint into the pipe body, making the insertion process smoother, thereby improving the assembly efficiency of the joint and the pipe body, and on the other hand, the first limiting surface can limit the movement of the first limiting part in the direction opposite to the insertion direction of the pipe body, thereby improving the pull-out force between the joint and the pipe body and reducing the risk of loosening or disengaging of the joint from the pipe body.

[0025] In a third aspect, the present application provides a power-consuming device, which comprises: the above-mentioned battery device; or the above-mentioned pipe body. By arranging the first limiting part on the pipe body, the first limiting part is used to cooperate with the pipe body to limit the opposite movement of the pipe body and the joint, thereby improving the connection strength and stability of the joint and the pipe body, and by arranging the reinforcing part on the end of the pipe body used to connect the joint, the joint and the pipe body can be more closely matched, which can further limit the opposite movement of the pipe body and the joint, thereby further improving the connection strength and stability of the joint and the pipe body. By arranging the first limiting part and the reinforcing part, the opposite movement of the pipe body and the joint can be limited, the connection strength and stability of the joint and the pipe body can be improved, the pull-out force between the joint and the pipe body is improved, the risk of loosening or disengaging of the joint from the pipe body is reduced, the heat transfer mechanism can effectively transfer heat, thereby improving the heat transfer efficiency and heat transfer effect of the heat transfer mechanism, and the risk of thermal runaway of the battery device can be reduced, so the reliability of the battery device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0027] Figure 1 is a structural schematic diagram of an embodiment of the power-using device provided by the present application;

[0028] Figure 2 is an exploded structural schematic diagram of an embodiment of the battery device provided by the present application;

[0029] Figure 3 is a structural schematic diagram of the cooperation between the battery cell and the heat exchange mechanism of the battery device provided by the present application;

[0030] Figure 4 is an exploded structural schematic diagram of the pipe body and the joint provided by the present application;

[0031] Figure 5 is a cross-sectional structural schematic diagram of the cooperation between the pipe body and the joint of the first embodiment provided by the present application;

[0032] Figure 6 is a structural schematic diagram of the pipe body of the first embodiment provided by the present application;

[0033] Figure 7 is a cross-sectional structural schematic diagram of the cooperation between the pipe body and the joint of the second embodiment provided by the present application;

[0034] Figure 8 is a cross-sectional structural schematic diagram of an embodiment of the pipe body provided by the present application;

[0035] Figure 9 is a cross-sectional structural schematic diagram of the cooperation between the pipe body and the joint of the third embodiment provided by the present application;

[0036] Figure 10 is a cross-sectional structural schematic diagram of the cooperation between the pipe body and the joint of the fourth embodiment provided by the present application;

[0037] Figure 11 is a structural schematic diagram of the pipe body of the second embodiment provided by the present application;

[0038] Figure 12 is a cross-sectional structural schematic diagram of the cooperation between the pipe body and the joint of the fifth embodiment provided by the present application;

[0039] Figure 13 is a structural schematic diagram of the pipe body of the third embodiment provided by the present application;

[0040] Figure 14 is a cross-sectional structure schematic diagram of a sixth embodiment of the pipe body and the joint provided in the present application.

[0041] The reference signs in the detailed description are as follows:

[0042] Vehicle 1000a, battery device 100a, controller 200a, motor 300a, battery box 10, containing space 10a, battery cell 20, heat exchange mechanism 30, joint 31, first limiting part 311, second guide surface 3111, second limiting surface 3112, outer cover 312, extension section 313, cooling part 32, liquid distribution part 33, pipe body 40, plug-in interface 40a, reinforcing part 41, second limiting part 411, first guide surface 4111, first limiting surface 4112, limiting groove 4112a, protruding part 412, reinforcing rib 413, first pipe body layer 42, second pipe body layer 43. Detailed description of the embodiments

[0043] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0045] In this paper, the "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0047] In the description of the embodiments of the present application, the orientations or positional relationships indicated by 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", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0049] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate heat medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] With the development of battery technology, battery devices are applied to more and more fields, and gradually replace traditional petrochemical energy in the field of automobile power and the like. The battery device can store chemical energy and controllably convert the chemical energy into electrical energy. In the recyclable battery device, after discharging, the active material can be activated by charging to continue to be used.

[0051] With the development of battery thermal management technology, the direct cooling and direct heating scheme gradually matures, which can significantly improve the heat exchange efficiency and temperature uniformity. The direct cooling and direct heating scheme realizes the heat exchange between the battery monomer and the external environment through a heat exchange mechanism. The heat exchange mechanism is connected with a pipe body for the inlet and outlet of the heat exchange medium through a joint to form a heat exchange loop. The battery monomer is directly cooled or heated by using a heat exchange medium, which can reduce the battery overcurrent protection sheet and other components, and can reduce the cost while improving the thermal management performance.

[0052] In the related art, the pull-out force between the joint and the pipe body is insufficient, there is a risk of loosening, which can cause the heat exchange mechanism to be unable to effectively transfer heat, thereby affecting the heat exchange effect of the heat exchange mechanism. At the same time, the poor heat exchange effect can also cause the internal temperature of the battery device to rise, thereby causing thermal runaway, thereby causing the reliability of the battery device to be low. Therefore, how to improve the pull-out force between the joint and the pipe body is a technical problem to be solved in the current field.

[0053] Based on the above considerations, the battery device, the pipe body and the electric equipment are provided. The battery device comprises a battery box, a battery cell, a heat exchange mechanism and a pipe body. The battery box forms an accommodation space. The battery cell is arranged in the accommodation space. The heat exchange mechanism is arranged in the accommodation space and is used for heat exchange with the battery cell and the external environment. The heat exchange mechanism is provided with a heat exchange cavity and a joint in communication with the heat exchange cavity. The joint is provided with a first limiting portion. The joint and the pipe body are inserted and connected to communicate the pipe body and the heat exchange cavity. The pipe body cooperates with the first limiting portion to limit the opposite movement of the pipe body and the joint. One end of the pipe body connected to the joint is provided with a reinforcing portion for further limiting the opposite movement. In this embodiment, the first limiting portion is arranged on the pipe body and cooperates with the pipe body to limit the opposite movement of the pipe body and the joint, thereby improving the connection strength and stability of the joint and the pipe body. At the same time, the reinforcing portion is arranged at the end of the pipe body connected to the joint, so that the joint and the pipe body can be more closely matched, and the opposite movement of the pipe body and the joint can be further limited, thereby further improving the connection strength and stability of the joint and the pipe body. By arranging the first limiting portion and the reinforcing portion, the opposite movement of the pipe body and the joint can be limited, the connection strength and stability of the joint and the pipe body can be improved, the pull-out force between the joint and the pipe body can be improved, the risk of loosening or disengagement of the joint from the pipe body can be reduced, the heat exchange mechanism can effectively transfer heat, thereby improving the heat exchange efficiency and effect of the heat exchange mechanism, and the risk of thermal runaway of the battery device can be reduced. Therefore, the reliability of the battery device can be improved.

[0054] The battery device, the pipe body and the electric equipment disclosed in the embodiments of the present application can be used in various energy storage systems using the battery device as a power source or using the battery device as an energy storage element. The electric equipment can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0055] The following embodiments are described with reference to a vehicle 1000a as an example of an electric equipment of an embodiment of the present application for convenience of description.

[0056] Please refer to Figure 1The vehicle 1000a can be a pure electric vehicle, a hybrid vehicle, or a range-extended vehicle, etc. The vehicle 1000a is internally provided with a battery device 100a, which can be arranged at the bottom of the vehicle 1000a. The battery device 100a can be used for power supply of the vehicle 1000a, for example, the battery device 100a can be used as an operating power source of the vehicle 1000a. The vehicle 1000a can further include a controller 200a and a motor 300a, the controller 200a is used to control the battery device 100a to supply power to the motor 300a, for example, for the power demand of starting, navigation and driving of the vehicle 1000a.

[0057] Please refer to Figures 2-3 In some embodiments of the present application, the battery device 100a can not only be used as an operating power source of the vehicle 1000a, but also be used as a driving power source of the vehicle 1000a, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000a.

[0058] In some embodiments, the battery device 100a can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0059] The battery device 100a mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 20 connected in series, in parallel or in a mixed manner through a busbar component.

[0060] In the embodiments of the present application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be activated by charging after discharging.

[0061] The battery cell 20 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0062] In some embodiments, the battery device 100a includes a battery cell 20 and a battery box 10 formed with a receiving space 10a for accommodating the battery cell 20.

[0063] In some embodiments, the battery box 10 can be part of the chassis structure of the vehicle 1000a. For example, part of the battery box 10 can be at least part of the chassis of the vehicle 1000a, or part of the battery box 10 can be at least part of the cross beam and the longitudinal beam of the vehicle 1000a.

[0064] The battery box 10 can have various structures. In some embodiments, the battery box 10 can include a first part 11 and a second part 12, the first part 11 and the second part 12 are mutually covered, and the first part 11 and the second part 12 jointly define a containing space 10a for containing the battery monomer 20. The second part 12 can be a hollow structure with one end open, and the first part 11 can be a plate-shaped structure, the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define the containing space 10a; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the battery box 10 formed by the first part 11 and the second part 12 can have various shapes, such as a cylinder, a cuboid, etc. The embodiments of the present application take the shape of the battery box 10 as a cuboid as an example for description.

[0065] In some embodiments, please refer to Figures 2-5 , the battery device 100a includes a battery box 10, a battery monomer 20, a heat exchange mechanism 30, and a pipe body 40, the battery box 10 is formed with a containing space 10a; the battery monomer 20 is arranged in the containing space 10a; the heat exchange mechanism 30 is arranged in the containing space 10a and is used for heat exchange with the battery monomer 20 and the external environment; the heat exchange mechanism 30 is provided with a heat exchange cavity and a connector 31 communicating with the heat exchange cavity, the connector 31 is provided with a first limiting part 311; the connector 31 is insertedly arranged with the pipe body 40 to communicate the pipe body 40 and the heat exchange cavity; the pipe body 40 cooperates with the first limiting part 311 to limit the opposite movement of the pipe body 40 and the connector 31; wherein, one end of the pipe body 40 for connecting the connector 31 is provided with a reinforcing part 41 for further limiting the opposite movement.

[0066] The heat exchange mechanism 30 refers to a structure for heat exchange, which can include a multi-heat exchange cavity structure for heat exchange by using a heat exchange medium, such as a liquid medium or a gas medium. The heat exchange mechanism 30 includes a plurality of heat exchange cavities that can actively or passively exchange heat, and the heat exchange mechanism 30 can control the temperature of the medium contained in the heat exchange cavity of the heat exchange mechanism 30 to regulate the temperature of the battery monomer 20. The heat exchange mechanism 30 can heat or cool the battery monomer 20 based on actual needs. The heat exchange mechanism 30 can be made of metal, non-metal or alloy with good heat conduction performance. The shape of the heat exchange mechanism 30 can be designed according to the space position to be placed to adapt to sufficient heat exchange.

[0067] In some embodiments, the battery device 100a comprises a plurality of battery cells 20 arranged in a rectangular array along a first direction X-X and a second direction Y-Y, forming a plurality of battery cell 20 modules spaced along the second direction Y-Y, wherein each battery cell 20 module comprises a plurality of battery cells 20 arranged in sequence along the first direction X-X. The heat exchange mechanism 30 comprises a plurality of cooling portions 32. The cooling portion 32 is arranged between two adjacent battery cell 20 modules and between the battery cell 20 module and the inner surface of the battery case 10. The cooling portion 32 is provided with a heat exchange cavity for accommodating a heat exchange medium to exchange heat with the battery cell 20.

[0068] In some embodiments, the cooling portion 32 has a size along the first direction X-X greater than that of the battery cell 20 module along the first direction X-X. The cooling portion 32 is formed with a heat exchange cavity, and the two sides of the cooling portion 32 along the first direction X-X extend beyond the battery cell 20, and a liquid distribution portion 33 is formed, which communicates with the heat exchange cavity. The connector 31 can be arranged in the liquid distribution portion 33 and communicate with the heat exchange cavity. The pipe body 40 is used to connect the connectors 31 in the liquid distribution portions 33 arranged adjacent to each other along the second direction Y-Y, so that the heat exchange mechanism 30 forms a heat exchange loop.

[0069] In some embodiments, the first limiting portion 311 is arranged on the outer surface of the connector 31, and the connector 31 is at least partially inserted into the pipe body 40. The first limiting portion 311 of the connector 31 can cooperate with the inner surface of the pipe body 40 and / or the reinforcing portion 41 to limit the opposite movement of the pipe body 40 and the connector 31. Wherein, the opposite movement of the pipe body 40 and the connector 31 refers to the movement of the connector 31 in a direction opposite to the insertion direction of the connector 31 into the pipe body 40, and the movement of the pipe body 40 in the same direction as the insertion direction of the connector 31 into the pipe body 40.

[0070] In some embodiments, the first limiting portion 311 is arranged on the inner surface of the connector 31, and the pipe body 40 is at least partially inserted into the connector 31. The first limiting portion 311 of the connector 31 can cooperate with the outer surface of the pipe body 40 and / or the reinforcing portion 41 to limit the opposite movement of the pipe body 40 and the connector 31. Wherein, the opposite movement of the pipe body 40 and the connector 31 refers to the movement of the pipe body 40 in a direction opposite to the insertion direction of the pipe body 40 into the connector 31, and the movement of the connector 31 in the same direction as the insertion direction of the pipe body 40 into the pipe body 40.

[0071] The first limiting portion 311 and the connector 31 can be an integrally formed structure, which not only improves the stability of the structure between the first limiting portion 311 and the connector 31, but also improves the connection strength and sealing effect between the connector 31 and the pipe body 40.

[0072] The first limiting portion 311 is arranged on the pipe body 40 and is used to cooperate with the pipe body 40 to limit the opposite movement of the pipe body 40 and the connector 31, thereby improving the connection strength and stability of the connection between the connector 31 and the pipe body 40. Meanwhile, the reinforcing portion 41 is arranged on the end of the pipe body 40 used to connect the connector 31, so that the connector 31 and the pipe body 40 can be more closely matched, and the opposite movement of the pipe body 40 and the connector 31 can be further limited, thereby further improving the connection strength and stability of the connection between the connector 31 and the pipe body 40. By arranging the first limiting portion 311 and the reinforcing portion 41, the opposite movement of the pipe body 40 and the connector 31 can be limited, the connection strength and stability of the connection between the connector 31 and the pipe body 40 can be improved, the pull-out force between the connector 31 and the pipe body 40 is improved, the risk of loosening or disengaging of the connector 31 from the pipe body 40 is reduced, the heat exchange mechanism 30 can effectively transfer heat, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange mechanism 30, and the risk of thermal runaway of the battery device 100a can be reduced, so the reliability of the battery device 100a can be improved.

[0073] In some embodiments, referring to Figures 6-7 The reinforcing portion 41 includes a second limiting portion 411 arranged on the surface of the pipe body 40 facing the connector 31. When the connector 31 is inserted into the pipe body 40, the second limiting portion 411 is used to be clamped with the first limiting portion 311 to limit the opposite movement of the pipe body 40 and the connector 31.

[0074] The second limiting portion 411 is arranged on the surface of the pipe body 40 facing the connector 31 along the circumferential direction of the pipe body 40 and extends towards the axis of the pipe body 40. The arrangement of the second limiting portion 411 does not hinder the insertion between the connector 31 and the pipe body 40, and can limit the opposite movement of the pipe body 40 and the connector 31, thereby improving the pull-out force between the connector 31 and the pipe body 40.

[0075] In some embodiments, the first limiting portion 311 is arranged on the inner surface of the pipe body 40. When the connector 31 is at least partially inserted into the pipe body 40, the second limiting portion 411 is located on the rear side of the first limiting portion 311 along the insertion direction of the connector 31 and is clamped with the first limiting portion 311, thereby limiting the opposite movement of the pipe body 40 and the connector 31.

[0076] In some embodiments, the first limiting portion 311 is arranged on the outer surface of the pipe body 40. When the pipe body 40 is at least partially inserted into the connector 31, the second limiting portion 411 is located on the front side of the first limiting portion 311 along the insertion direction of the connector 31 and is clamped with the first limiting portion 311, thereby limiting the opposite movement of the pipe body 40 and the connector 31.

[0077] The second limiting portion 411 is arranged in the second limiting position and is capable of limiting the opposite movement of the pipe body 40 and the connector 31, thereby increasing the pull-out force between the pipe body 40 and the connector 31 and enhancing the connection strength between the pipe body 40 and the connector 31.

[0078] In some embodiments, please continue to refer to Figure 6 The second limiting portion 411 is arranged along the circumference of the pipe body 40 and is spaced apart from the two ends arranged along the circumference.

[0079] In some embodiments, the dimension of the pipe body 40 along the circumference thereof is greater than the dimension of the second limiting portion 411 along the circumference of the pipe body 40, so that the second limiting portion 411 is spaced apart from the two ends arranged along the circumference of the pipe body 40.

[0080] By arranging the second limiting portion 411 to be spaced apart from the two ends arranged along the circumference of the pipe body 40, the structural strength of the region of the pipe body 40 between the two ends arranged along the circumference of the pipe body 40 is reduced, thereby reducing the insertion resistance of the connector 31 to the second limiting portion 411 during the insertion of the connector 31 into the pipe body 40, and reducing the assembly difficulty of the connector 31 and the pipe body 40, so that the installation process is smoother.

[0081] In some embodiments, the first limiting portion 311 is arranged on the outer surface of the connector 31, the second limiting portion 411 is arranged on the inner surface of the pipe body 40, and the connector 31 is at least partially inserted into the pipe body 40.

[0082] The first limiting portion 311 can be formed on the front end of the connector 31 along the insertion direction of the connector 31 into the pipe body 40 and is arranged on the outer surface of the connector 31 along the circumference of the connector 31.

[0083] In some embodiments, when the connector 31 is inserted into the pipe body 40, the first limiting portion 311 can be pressed against the inner surface of the pipe body 40, thereby limiting the opposite movement of the pipe body 40 and the connector 31; when the connector 31 is inserted into the pipe body 40, the reinforcing portion 41 is located on the rear side of the first limiting portion 311 along the insertion direction of the connector 31, or the reinforcing portion 41 is located in the region corresponding to the first limiting portion 311 of the connector 31 of the pipe body 40, and the reinforcing portion 41 can limit the opposite movement of the pipe body 40 and the connector 31.

[0084] In some embodiments, the outer surface of the portion of the connector 31 located within the tube body 40 is sealingly arranged with the inner surface of the tube body 40. For example, the inner wall of the tube body 40 is elastic, and the outer surface of the portion of the connector 31 located within the tube body 40 is in interference fit with the inner surface of the tube body 40, which not only enables the sealing connection between the connector 31 and the tube body 40, but also improves the pull-out force between the connector 31 and the tube body 40, thereby reducing the risk of leakage of the tube body 40 and the heat exchange medium in the heat exchange cavity from between the connector 31 and the tube body 40, and improving the heat exchange efficiency and heat exchange effect.

[0085] By arranging the first limiting portion 311 on the outer surface of the connector 31 and the second limiting portion 411 on the inner surface of the tube body 40, when the connector 31 is at least partially inserted into the tube body 40, the first limiting portion 311 and the second limiting portion 411 can be clamped to limit the opposite movement of the tube body 40 and the connector 31.

[0086] In some embodiments, please continue to refer to Figure 8 The second limiting portion 411 is provided with a first guide surface 4111 on the side facing the insertion port 40a of the tube body 40, and the first guide surface 4111 is arranged obliquely relative to the inner surface of the tube body 40, which is used to guide the insertion of the first limiting portion 311 into the tube body 40. The second limiting portion 411 is provided with a first limiting surface 4112 on the side away from the insertion port 40a, which is used to clamp the first limiting portion 311 when the connector 31 is inserted into the tube body 40.

[0087] The first guide surface 4111 is the surface of the second limiting portion 411 on the side facing the insertion port 40a of the tube body 40, and the first limiting surface 4112 is the surface of the second limiting portion 411 on the side away from the insertion port 40a of the tube body 40. When the connector 31 is inserted into the tube body 40, the first guide surface 4111 is located on the rear side of the second limiting portion 411 along the insertion direction of the connector 31 into the tube body 40 relative to the first limiting surface 4112, and the first limiting surface 4112 is located on the front side of the second limiting portion 411 along the insertion direction of the connector 31 into the tube body 40 relative to the first guide surface 4111, that is, during the insertion of the connector 31 into the tube body 40, the first guide surface 4111 is passed first and then the first limiting surface 4112.

[0088] In some embodiments, the inner diameter of the region where the second limiting portion 411 is provided with the first guide surface 4111 gradually decreases from the side close to the insertion port 40a to the side away from the insertion port 40a, which can be used to guide the insertion of the first limiting portion 311 into the tube body 40.

[0089] In some embodiments, the plane where the first limiting surface 4112 is located can be perpendicular to the axial direction of the tube body 40, and the first limiting surface 4112 is used to clamp the first limiting portion 311 to limit the opposite movement of the tube body 40 and the connector 31.

[0090] In some embodiments, referring to Figure 8 The first limiting surface 4112 can be arranged to extend obliquely from a side close to the inner surface of the pipe body 40 towards a direction away from the insertion port 40a, and a limiting groove 4112a is formed between the first limiting surface 4112 and the inner surface of the pipe body 40, which is used to be buckled with the first limiting portion 311 to limit the movement of the pipe body 40 away from the connector 31.

[0091] The first guide surface 4111 is arranged on the second limiting portion 411 to guide the insertion of the first limiting portion 311 into the pipe body 40, and the first limiting surface 4112 is arranged to be buckled with the first limiting portion 311. On the one hand, the first guide surface 4111 can reduce the insertion resistance during the insertion of the connector 31 into the pipe body 40, so that the insertion process is smoother, thereby improving the assembly efficiency of the connector 31 and the pipe body 40. On the other hand, the first limiting surface 4112 can limit the movement of the first limiting portion 311 in a direction opposite to the insertion direction of the pipe body 40, thereby improving the pull-out force between the connector 31 and the pipe body 40, and reducing the risk of loosening or disengaging of the connector 31 from the pipe body 40.

[0092] In some embodiments, referring to Figures 9-10 The first guide surface 4111 is a plane or an arc surface, and the included angle between the first guide surface 4111 and the inner surface of the pipe body 40 is greater than 90°.

[0093] In some embodiments, the first guide surface 4111 is a plane, and the first guide surface 4111 is arranged to extend obliquely from a side close to the inner surface of the pipe body 40 towards a direction away from the insertion port 40a.

[0094] In some embodiments, the first guide surface 4111 is an arc surface, and the first guide surface 4111 is arranged to extend obliquely from a side close to the inner surface of the pipe body 40 towards a direction away from the insertion port 40a. The arc surface can be a concave arc surface or a convex arc surface.

[0095] An included angle between the first guide surface 4111 and the inner surface of the pipe body 40 can be 92°, 95.2°, 98°, 100°, 103.8°, 105.5°, 108°, 110°, 112.3°, 115°, 117.8°, 122°, 127.5°, 129.1°, 130°, 133.5°, 136.3°, 138°, 140°, 142.6°, 145°, 148.88°, 150°, 153.6°, 157°, 160°, 162.3°, 165.5°, 168°, 170°, 171.8°, 173.6°, 175°, etc., but is not limited thereto, and the specific angle can be selected according to the actual situation, as long as the included angle between the first guide surface 4111 and the inner surface of the pipe body 40 is greater than 90°.

[0096] The arrangement of the first guide surface 4111 can reduce the insertion resistance of the joint 31, so that the first limiting portion 311 of the joint 31 can smoothly pass through the position where the second limiting portion 411 is located, and the insertion efficiency of the joint 31 inserted into the pipe body 40 can be improved.

[0097] In some embodiments, please continue to refer to Figures 9-10 The first limiting surface 4112 is a plane or an arc surface, and an included angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is less than or equal to 90°.

[0098] In some embodiments, the first limiting surface 4112 is a plane, and an included angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is equal to 90°.

[0099] In some embodiments, the first limiting surface 4112 is a plane, and the first limiting surface 4112 is arranged to extend obliquely from a side close to the inner surface of the pipe body 40 to a direction away from the insertion port 40a.

[0100] In some embodiments, the first limiting surface 4112 is an arc surface, and the first limiting surface 4112 is arranged to extend obliquely and curve from a side close to the inner surface of the pipe body 40 to a direction away from the insertion port 40a.

[0101] When the first limiting surface 4112 is a plane or an arc surface, an included angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is less than 90°, a limiting groove 4112a is formed between the first limiting surface 4112 and the inner surface of the pipe body 40, and at least part of the first limiting portion 311 is clamped in the limiting groove 4112a.

[0102] An angle between the first limiting surface 4112 and the inner surface of the pipe body 40 can be 90°, 88.5°, 85°, 82°, 80°, 77.5°, 75°, 72.3°, 70°, 67.3°, 65°, 61°, 60°, 58°, 56.3°, 52°, 50°, 47.5°, 44.2°, 40°, 39.2°, 37°, 35°, 33.3°, 30°, 29.1°, 28°, 26.2°, 25°, 15°, etc., but is not limited thereto. The specific angle can be selected according to actual conditions, as long as the angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is less than or equal to 90°.

[0103] By making the first limiting surface 4112 a plane or an arc surface, the angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is less than or equal to 90°, which can improve the stability of the relative position of the first limiting surface 4112 and the first limiting portion 311 when they are clamped, reduce the risk of the first limiting portion 311 of the connector 31 sliding along the first limiting surface 4112 toward the insertion port 40a, not only significantly improve the pull-out force between the connector 31 and the pipe body 40, but also reduce the risk of the first limiting portion 311 rubbing against the inner surface of the pipe body 40, thereby improving the problems of blockage and wear of the pipe body 40.

[0104] In some embodiments, along the axial direction of the pipe body 40, the reinforcing portion 41 is located on the side of the first guide surface 4111 close to the insertion port 40a.

[0105] When the connector 31 falls off from the pipe body 40, it will move away from the pipe body 40 along the axial direction of the pipe body 40, i.e., in the opposite direction of the insertion direction. By arranging the reinforcing portion 41 on the side of the first guide surface 4111 close to the insertion port 40a, on the one hand, the structural strength of the second limiting portion 411 can be enhanced, thereby improving the limiting effect of the second limiting portion 411 on the first limiting portion 311, so that the pull-out force between the connector 31 and the pipe body 40 is further improved; on the other hand, the tightness of the connection between the connector 31 and the pipe body 40 can be improved, thereby not only reducing the risk of the connector 31 rubbing against the inner surface of the pipe body 40 due to looseness, but also reducing the risk of leakage of the heat exchange medium in the heat exchange cavity from between the pipe body 40 and the connector 31, so that the durability and reliability of the battery device 100a are improved.

[0106] In some embodiments, along the axial direction of the pipe body 40, the reinforcing portion 41 is adjacent to the first guide surface 4111.

[0107] When the connector 31 is detached from the pipe body 40, the connector 31 moves away from the pipe body 40 along the axial direction of the pipe body 40, i.e. in the opposite direction of the insertion direction. Along the axial direction of the pipe body 40, the reinforcing portion 41 abuts against the first guide surface 4111, thereby enhancing the structural strength of the second limiting portion 411, improving the pull-off force and tightness between the connector 31 and the pipe body 40, and reducing the possibility of loosening of the first limiting portion 311 in the opposite direction of the insertion direction, thereby improving the assembly stability of the connector 31 and the pipe body 40.

[0108] In addition, if the reinforcing portion 41 is spaced apart from the first guide surface 4111 by a certain distance, when the connector 31 is subjected to a force in the opposite direction of the insertion direction, the first limiting portion 311 can move to the position corresponding to the reinforcing portion 41 in the opposite direction of the insertion direction and be limited by the reinforcing portion 41, thereby causing loosening in the opposite direction of the insertion direction.

[0109] In some embodiments, referring to Figures 11-12 the second limiting portion 411 includes a protruding portion 412 arranged on the inner surface of the pipe body 40 and extending towards the axis of the pipe body 40. The first limiting portion 311 is provided with a second limiting surface 3112 which is engaged with the protruding portion 412 when the connector 31 is inserted into the pipe body 40.

[0110] In some embodiments, the protruding portion 412 includes a first guide surface 4111 and a first limiting surface 4112. When the connector 31 is inserted into the pipe body 40, the first guide surface 4111 is arranged on the side of the second limiting portion 411 facing the insertion port 40a of the pipe body 40, and the first guide surface 4111 is arranged obliquely relative to the axis of the pipe body 40 to guide the insertion of the first limiting portion 311 into the pipe body 40. The first limiting surface 4112 is arranged on the side of the second limiting portion 411 away from the insertion port 40a to be engaged with the first limiting portion 311.

[0111] In some embodiments, the connector 31 includes an outer cover 312, an extension segment 313, and the first limiting portion 311. The outer cover 312 is connected to one end of the extension segment 313, and the first limiting portion 311 is connected to the other end of the extension segment 313. The side of the outer cover 312 connected to the extension segment 313 abuts against the end of the pipe body 40 provided with the insertion port 40a, and the outer diameter of the outer cover 312 is greater than the diameter of the insertion port 40a, so that the outer cover 312 cannot be inserted into the pipe body 40 through the insertion port 40a. The first limiting portion 311 is engaged with the side of the protruding portion 412 away from the insertion port 40a.

[0112] One end of the connector 31 is abutted with the end of the pipe body 40 provided with the insertion port 40a through the outer cover 312, and the other end is clamped with the side of the protruding portion 412 away from the insertion port 40a through the first limiting portion 311. The outer cover 312 can limit the connector 31 from moving further in the insertion direction, so that the connector 31 cannot enter the pipe body 40 completely. The first limiting portion 311 can limit the connector 31 from moving towards the insertion port 40a, so that the connector 31 cannot be pulled out of the insertion port 40a. Meanwhile, when the outer cover 312 is abutted with the end of the pipe body 40 provided with the insertion port 40a, the first limiting portion 311 can be clamped with the side of the protruding portion 412 away from the insertion port 40a, so as to limit the axial movement of the connector 31 or the pipe body 40, and enhance the connection strength between the connector 31 and the pipe body 40.

[0113] The first limiting portion 311 comprises a second guiding surface 3111 and a second limiting surface 3112, and the second limiting surface 3112 is connected between the extension segment 313 and the second guiding surface 3111. The second guiding surface 3111 is arranged obliquely relative to the insertion direction of the connector 31, and the second guiding surface 3111 is arranged obliquely towards the inside of the pipe body 40 from the side of the second limiting surface 3112 away from the extension segment 313. The arrangement of the second guiding surface 3111 can reduce the insertion resistance of the connector 31, so that the connector 31 can be inserted into the pipe body 40 more easily and smoothly, thereby improving the connection efficiency between the connector 31 and the pipe body 40. The second limiting surface 3112 can cooperate with the first limiting surface 4112 to limit the opposite movement of the pipe body 40 and the connector 31.

[0114] In some embodiments, when the included angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is equal to 90°, the included angle between the second limiting surface 3112 of the connector 31 and the extension segment 313 can be equal to 90°, and the first limiting surface 4112 and the second limiting surface 3112 are arranged in abutment. When the included angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is less than 90°, the included angle between the second limiting surface 3112 of the connector 31 and the extension segment 313 can be less than 90°, and the side of the first limiting portion 311 provided with the second limiting surface 3112 is at least partially clamped in the limiting groove 4112a. The first limiting surface 4112 is arranged at the front end of the protruding portion 412 in the insertion direction of the connector 31, and the second limiting surface 3112 is used to clamp with the second limiting surface 3112 of the protruding portion 412.

[0115] By arranging the protruding portion 412 on the inner surface of the pipe body 40 and extending towards the inside of the pipe body 40, the second limiting surface 3112 of the first limiting portion 311 is clamped with the front end of the protruding portion 412 along the insertion direction of the joint 31, the protruding portion 412 can limit the movement of the joint 31 in the direction opposite to the insertion direction of the joint 31 into the pipe body 40, and at the same time, the first limiting portion 311 can limit the movement of the pipe body 40 in the same direction as the insertion direction of the joint 31 into the pipe body 40, thereby limiting the opposite movement of the pipe body 40 and the joint 31, enhancing the connection strength between the joint 31 and the pipe body 40, and improving the pull-out force between the joint 31 and the pipe body 40.

[0116] In some embodiments, the reinforcing portion 41 is fixedly connected to or integrally formed on the pipe body 40.

[0117] If the reinforcing portion 41 is integrally formed on the pipe body 40, the stability of the structure between the reinforcing portion 41 and the pipe body 40 can be improved, thereby improving the limiting effect of the reinforcing portion 41 on the first limiting portion 311, and further improving the pull-out force between the joint 31 and the pipe body 40; if the reinforcing portion 41 is fixedly connected to the pipe body 40, the design flexibility and the convenience of maintenance can be improved, because the setting position of the reinforcing portion 41 can be changed according to different specifications of the joint 31, and the reinforcing portion 41 can be repaired or replaced when it is worn out.

[0118] In some embodiments, the protruding portion 412 of the reinforcing portion 41 is integrally formed on the pipe body 40, and the protruding portion 412 is formed by the inner surface of the pipe body 40 protruding towards the inside of the pipe body 40.

[0119] In some embodiments, the protruding portion 412 is arranged on the inner surface of the pipe body 40 towards the inside of the pipe body 40 by fixed connection. The fixed connection of the protruding portion 412 to the pipe body 40 can be welding, bonding, riveting, or bolt connection, but is not limited thereto.

[0120] In some embodiments, along the radial direction of the pipe body 40, the size of the region of the pipe body 40 corresponding to the first limiting portion 311 is greater than the size of other regions of the pipe body 40, so as to form the reinforcing portion 41; or the material strength of the region of the pipe body 40 corresponding to the first limiting portion 311 is greater than the material strength of other regions of the pipe body 40, so as to form the reinforcing portion 41.

[0121] In some embodiments, along the radial direction of the pipe body 40, the size of the region of the pipe body 40 corresponding to the first limiting portion 311 is greater than the size of other regions of the pipe body 40, so as to form the reinforcing portion 41; or the material strength of the region of the pipe body 40 corresponding to the first limiting portion 311 is greater than the material strength of other regions of the pipe body 40, so as to form the reinforcing portion 41.

[0122] The material strength of the region corresponding to the first limiting portion 311 of the pipe body 40 can be the hardness, deformation resistance, or mechanical strength of the region corresponding to the first limiting portion 311 of the pipe body 40.

[0123] In some embodiments, the material strength of the region corresponding to the first limiting portion 311 of the pipe body 40 can be greater than the material strength of other regions of the pipe body 40 by alloying, heat treatment, or adding fibers, etc. For example, by adding elements such as titanium, vanadium, chromium, and / or molybdenum to the material forming the region corresponding to the first limiting portion 311 of the pipe body 40, the hardness and mechanical strength of the region corresponding to the first limiting portion 311 of the pipe body 40 can be enhanced; or the region corresponding to the first limiting portion 311 of the pipe body 40 can be heat treated to enhance the mechanical strength of the region corresponding to the first limiting portion 311 of the pipe body 40; or by adding fibers such as carbon fibers, glass fibers, etc. to the material forming the region corresponding to the first limiting portion 311 of the pipe body 40, the strength and deformation resistance of the material can be enhanced.

[0124] In the above manner, the deformation resistance of the reinforcing portion 41 can be improved, so that the reinforcing portion 41 is less likely to deform under the action of the joint 31, thereby improving the stability of the clamping of the reinforcing portion 41 and the first limiting portion 311 of the joint 31, and the limiting effect of limiting the opposite movement of the pipe body 40 and the joint 31 can be significantly improved.

[0125] In some embodiments, please refer to Figures 13-14 The reinforcing portion 41 includes a reinforcing rib 413 arranged on the outer surface of the pipe body 40.

[0126] In some embodiments, the reinforcing rib 413 extends from the outer surface of the pipe body 40 towards the direction away from the pipe body 40.

[0127] By arranging the reinforcing rib 413 on the outer surface of the pipe body 40, the structural strength of the region corresponding to the first limiting portion 311 of the pipe body 40 can be enhanced, thereby improving the connection strength and stability of the pipe body 40 and the joint 31, and further improving the pull-out force between the joint 31 and the pipe body 40.

[0128] In some embodiments, the reinforcing rib 413 is arranged on the outer surface of the region corresponding to the first limiting portion 311 of the pipe body 40. When the joint 31 is inserted into the pipe body 40, the reinforcing rib 413, the pipe wall of the pipe body 40, and the first limiting portion 311 are arranged in sequence along the radial direction of the pipe body 40. The arrangement of the reinforcing rib 413 can enhance the structural strength of the region corresponding to the first limiting portion 311 of the pipe body 40, so that the region corresponding to the first limiting portion 311 of the pipe body 40 is less likely to deform under the action of external force, thereby improving the connection strength and stability of the connection between the reinforcing portion 41 and the first limiting portion 311.

[0129] In some embodiments, the reinforcing rib 413 is arranged on the outer surface of the pipe body 40 at the region corresponding to the second limiting portion 411, and the reinforcing rib 413, the pipe wall of the pipe body 40 and the second limiting portion 411 are arranged in sequence in the radial direction of the pipe body 40. The arrangement of the reinforcing rib 413 enhances the structural strength of the region of the pipe body 40 corresponding to the second limiting portion 411, so that the region of the pipe body 40 corresponding to the second limiting portion 411 is not prone to deformation under the action of external force, thereby improving the connection strength and stability of the connection between the second limiting portion 411 and the first limiting portion 311.

[0130] In some embodiments, the reinforcing rib 413 is arranged along the circumference of the pipe body 40, and the two ends arranged along the circumference are spaced apart.

[0131] In some embodiments, the dimension of the pipe body 40 along the circumference thereof is greater than the dimension of the reinforcing rib 413 along the circumference of the pipe body 40, so that the two ends arranged along the circumference of the reinforcing rib 413 are spaced apart.

[0132] Spaced apart arrangement of the two ends arranged along the circumference of the reinforcing rib 413 can reduce the insertion resistance of the reinforcing rib 413 to the joint 31 without affecting the pull-out force between the joint 31 and the pipe body 40, thereby reducing the assembly difficulty of the joint 31 and the pipe body 40, and making the installation process smoother.

[0133] In some embodiments, the reinforcing rib 413 is fixedly connected or integrally formed with the pipe body 40.

[0134] In some embodiments, the reinforcing rib 413 is integrally formed with the pipe body 40, which can not only improve the stability of the structure between the reinforcing rib 413 and the pipe body 40, but also improve the structural strength of the region of the pipe body 40 where the reinforcing rib 413 is located.

[0135] In some embodiments, the reinforcing rib 413 is fixedly connected with the pipe body 40, and the reinforcing rib 413 is arranged on the side of the outer surface of the pipe body 40 facing the inside of the pipe body 40 by fixed connection, which can facilitate maintenance or replacement of the reinforcing rib 413 when the reinforcing rib 413 is worn out. The fixed connection of the reinforcing rib 413 to the pipe body 40 can be welding, bonding, riveting or bolt connection, but is not limited thereto.

[0136] In some embodiments, the pipe body 40 comprises at least one first pipe body layer 42 and at least one second pipe body layer 43, and the first pipe body layer 42 is sleeved outside the second pipe body layer 43. The second pipe body layer 43 or the first pipe body layer 42 close to the joint 31 is a flexible layer.

[0137] The pipe body 40 can include a first pipe body layer 42. Of course, the pipe body 40 can include multiple first pipe body layers 42, which are arranged in sequence. The number of the first pipe body layers 42 can be one, two, three, five, seven, etc., but is not limited thereto. The first pipe body layer 42 is a flexible pipe or a rigid pipe.

[0138] The pipe body 40 can include a second pipe body layer 43. Of course, the pipe body 40 can include multiple second pipe body layers 43, which are arranged in sequence. The number of the second pipe body layers 43 can be one, two, three, five, seven, etc., but is not limited thereto. The second pipe body layer 43 is a flexible pipe or a rigid pipe.

[0139] In some embodiments, the first pipe body layer 42 and the second pipe body layer 43 can be formed by double-color injection molding, but are not limited thereto.

[0140] In some embodiments, the joint 31 is at least partially inserted into the pipe body 40, and the second pipe body layer 43 closest to the joint 31 is located in the inner layer of the pipe body 40. The second pipe body layer 43 is a flexible layer.

[0141] In some embodiments, the pipe body 40 is at least partially inserted into the joint 31, and the first pipe body layer 42 closest to the joint 31 is located in the outer layer of the pipe body 40. The first pipe body layer 42 is a flexible layer.

[0142] By arranging the first pipe body layer 42 outside the second pipe body layer 43, and by setting the second pipe body layer 43 or the first pipe body layer 42 closest to the joint 31 as a flexible layer, on the one hand, the first pipe body layer 42 can protect the second pipe body layer 43, reducing the risk of excessive deformation or damage of the second pipe body layer 43. At the same time, the second pipe body layer 43 and the flexible layer of the first pipe body layer 42 can absorb external stress when the pipe body 40 is subjected to external force impact or vibration, reducing the risk of deformation or breakage of the pipe body 40, and improving the durability of the pipe body 40. On the other hand, by setting the second pipe body layer 43 or the first pipe body layer 42 closest to the joint 31 as a flexible pipe, when the joint 31 and the pipe body 40 are inserted and arranged, the flexible pipe not only can provide better sealing performance, so that the pipe body 40 and the joint 31 can be sealed and connected, thereby reducing the risk of leakage of the heat exchange medium in the heat exchange cavity from the pipe body 40 and the joint 31, but also can improve the pull-off force between the joint 31 and the pipe body 40, so that the reliability of the battery device 100a is improved.

[0143] In some embodiments, as shown in FIG. 1, the pipe body 40 can be arranged in the heat exchange cavity 110 of the battery device 100a, and the joint 31 can be arranged on the pipe body 40. The pipe body 40 can be arranged in the heat exchange cavity 110 of the battery device 100a, and the joint 31 can be arranged on the pipe body 40. Figure 5As shown, the heat exchange mechanism 30 is provided with a heat exchange cavity and a connector 31 communicating with the heat exchange cavity, and the outer surface of the connector 31 is provided with a first limiting portion 311; the connector 31 is at least partially inserted into the pipe body 40 to communicate the pipe body 40 and the heat exchange cavity, and the inner surface of the pipe body 40 cooperates with the first limiting portion 311 to limit the opposite movement of the pipe body 40 and the connector 31; wherein the end of the pipe body 40 for connecting the connector 31 is provided with a reinforcing portion 41 for further limiting the opposite movement.

[0144] Wherein, along the radial direction of the pipe body 40, the size of the region of the pipe body 40 corresponding to the first limiting portion 311 is greater than the size of other regions of the pipe body 40 to form the reinforcing portion 41; or the material strength of the region of the pipe body 40 corresponding to the first limiting portion 311 is greater than the material strength of other regions of the pipe body 40 to form the reinforcing portion 41.

[0145] Wherein, the reinforcing portion 41 includes a reinforcing rib 413 provided on the outer surface of the pipe body 40.

[0146] In some embodiments, as shown, Figures 4-14 As shown, the heat exchange mechanism 30 is provided with a heat exchange cavity and a connector 31 communicating with the heat exchange cavity, and the outer surface of the connector 31 is provided with a first limiting portion 311; the connector 31 is at least partially inserted into the pipe body 40 to communicate the pipe body 40 and the heat exchange cavity, and the end of the pipe body 40 for connecting the connector 31 is provided with a reinforcing portion 41, the reinforcing portion 41 includes a second limiting portion 411 provided on the inner surface of the pipe body 40, and the second limiting portion 411 is located at the rear side of the first limiting portion 311 along the insertion direction of the connector 31 when the connector 31 is inserted into the pipe body 40, and is used for clamping with the first limiting portion 311 to limit the opposite movement of the pipe body 40 and the connector 31.

[0147] Wherein, the second limiting portion 411 extends along the circumferential direction of the pipe body 40 and is spaced apart between two ends arranged along the circumferential direction; the second limiting portion 411 is provided with a first guide surface 4111 on the side facing the insertion port 40a of the pipe body 40, and the first guide surface 4111 is inclined relative to the inner surface of the pipe body 40 for guiding the first limiting portion 311 to be inserted into the pipe body 40; the side of the second limiting portion 411 away from the insertion port 40a is provided with a first limiting surface 4112 for clamping with the first limiting portion 311 when the connector 31 is inserted into the pipe body 40.

[0148] Wherein, the first guide surface 4111 is a plane or an arc surface, and the included angle between the first guide surface 4111 and the inner surface of the pipe body 40 is greater than 90°; the first limiting surface 4112 is a plane or an arc surface, and the included angle between the first limiting surface 4112 and the inner surface of the pipe body 40 is less than or equal to 90°.

[0149] Wherein, the second limiting portion 411 includes a protruding portion 412 provided on the inner surface of the pipe body 40 and extending towards the inside of the pipe body 40. In some embodiments, as shown,Figure 7 As shown, the protruding portion 412 is formed by protruding from the inner surface of the pipe body 40 towards the inside of the pipe body 40. In other embodiments, as shown in FIG. 4B, the protruding portion 412 is arranged on the side of the inner surface of the pipe body 40 towards the inside of the pipe body 40 by a fixed connection, and the reinforcing portion 41 includes a reinforcing rib 413 arranged on the outer surface of the pipe body 40. Figure 14 As shown, the protruding portion 412 is formed by protruding from the inner surface of the pipe body 40 towards the inside of the pipe body 40. In other embodiments, as shown in FIG. 4B, the protruding portion 412 is arranged on the side of the inner surface of the pipe body 40 towards the inside of the pipe body 40 by a fixed connection, and the reinforcing portion 41 includes a reinforcing rib 413 arranged on the outer surface of the pipe body 40.

[0150] The application further provides a pipe body, which can be used in the battery device 100a.

[0151] According to some embodiments of the application, the battery device 100a can be used in an electrical device. In this way, by arranging the first limiting portion 311 on the pipe body 40, the first limiting portion 311 is used to cooperate with the pipe body 40 to limit the movement of the pipe body 40 away from the connector 31, thereby improving the connection strength and stability of the connection between the connector 31 and the pipe body 40. At the same time, the reinforcing portion 41 is arranged at the end of the pipe body 40 used to connect the connector 31, so that the connector 31 and the pipe body 40 can be more closely matched, which can further limit the movement of the pipe body 40 away from the connector 31, thereby further improving the connection strength and stability of the connection between the connector 31 and the pipe body 40. By arranging the first limiting portion 311 and the reinforcing portion 41, the movement of the pipe body 40 away from the connector 31 can be limited, the connection strength and stability of the connection between the connector 31 and the pipe body 40 can be improved, the pull-out force between the connector 31 and the pipe body 40 is improved, the risk of the connector 31 loosening or separating from the pipe body 40 is reduced, and the heat exchange mechanism 30 can effectively transfer heat, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange mechanism 30. The risk of thermal runaway of the battery device 100a can be reduced, and thus the reliability of the battery device 100a can be improved.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the description of the application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The 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 by, The battery device comprises: a battery box body formed with a containing space; a battery cell arranged in the containing space; a heat exchange mechanism arranged in the containing space and used for heat exchange with the battery cell and an external environment; the heat exchange mechanism is provided with a heat exchange cavity and a connector in communication with the heat exchange cavity, and the connector is provided with a first limiting portion; a pipe body, the connector and the pipe body are in plug connection to communicate the pipe body and the heat exchange cavity; the pipe body and the first limiting portion are matched to limit the opposite movement of the pipe body and the connector; wherein, one end of the pipe body connected with the connector is provided with a reinforcing portion for further limiting the opposite movement.

2. The battery device according to claim 1, characterized by The reinforcing portion comprises a second limiting portion arranged on the surface of the pipe body facing the connector, and the second limiting portion is used for clamping the first limiting portion to limit the opposite movement when the connector is plugged into the pipe body.

3. The battery device of claim 2, wherein The second limiting portion is arranged along the circumference of the pipe body and is arranged at intervals between two ends arranged along the circumference.

4. The battery device of claim 2, wherein The first limiting portion is arranged on the outer surface of the connector, the second limiting portion is arranged on the inner surface of the pipe body, and the connector is at least partially plugged into the pipe body.

5. The battery device of claim 4, wherein, One side of the second limiting portion facing the plug-in port of the pipe body is provided with a first guide surface, and the first guide surface is arranged inclined relative to the inner surface of the pipe body to guide the plug-in of the first limiting portion into the pipe body. The other side of the second limiting portion away from the plug-in port is provided with a first limiting surface for clamping the first limiting portion when the connector is plugged into the pipe body.

6. The battery device of claim 5, wherein The first guide surface is a plane or an arc surface, and the included angle between the first guide surface and the inner surface of the pipe body is greater than 90°.

7. The battery device of claim 5, wherein The first limiting surface is a plane or an arc surface, and the included angle between the first limiting surface and the inner surface of the pipe body is less than or equal to 90°.

8. The battery device of claim 5, wherein, Along the axial direction of the pipe body, the reinforcing portion is located on the side of the first guide surface close to the plug-in port.

9. The battery device of claim 5, wherein, Along the axial direction of the pipe body, the reinforcing portion is adjacent to the first guide surface.

10. The battery device of claim 4, wherein The second limiting portion comprises a protruding portion arranged on the inner surface of the pipe body and extending towards the axis of the pipe body; The first limiting portion is provided with a second limiting surface, and the second limiting surface clamps the protruding portion when the connector is plugged into the pipe body.

11. The battery device of claim 1, wherein The reinforcing portion is fixedly connected to or integrally formed on the pipe body.

12. The battery device of claim 1, wherein, Along the radial direction of the pipe body, the size of the area corresponding to the first limiting portion of the pipe body is greater than the size of other areas of the pipe body to form the reinforcing portion. And / or, the material strength of the area corresponding to the first limiting portion of the pipe body is greater than the material strength of other areas of the pipe body to form the reinforcing portion.

13. The battery device of claim 1, wherein, The reinforcing portion comprises a reinforcing rib arranged on the outer surface of the pipe body.

14. The battery device of claim 13, wherein, The reinforcing rib is arranged along the circumference of the pipe body and is arranged at intervals between two ends arranged along the circumference.

15. The battery device according to any one of claims 1 to 14, characterized by, The pipe body comprises at least one first pipe body layer and at least one second pipe body layer, the first pipe body layer is sleeved outside the second pipe body layer, and the second pipe body layer or the first pipe body layer close to the connector is a flexible layer.

16. A tube body characterised in that, The pipe body is used for a heat exchange mechanism of a battery device, the heat exchange mechanism is provided with a heat exchange cavity and a connector in communication with the heat exchange cavity, the connector is provided with a first limiting part; the connector is inserted with the pipe body to communicate the pipe body and the heat exchange cavity; the pipe body cooperates with the first limiting part to limit the opposite movement of the pipe body and the connector. Wherein, the pipe body is provided with a reinforcing part at one end connected with the connector, for further limiting the opposite movement.

17. The tubular body of claim 16, wherein, The reinforcing part includes a second limiting part provided on the surface of the pipe body facing the connector, when the connector is inserted with the pipe body, the second limiting part is located at the rear side of the first limiting part along the insertion direction of the connector, for clamping with the first limiting part to limit the opposite movement.

18. The tubular body of claim 17, wherein, The second limiting part is arranged along the circumference of the pipe body, and the two ends arranged along the circumference are arranged at intervals.

19. The tubular body of claim 17, wherein, The first limiting part is provided on the outer surface of the connector, and the second limiting part is provided on the inner surface of the pipe body, and the connector is at least partially inserted into the pipe body.

20. The tubular body of claim 19, wherein, The second limiting part is provided with a first guide surface on the side facing the insertion port of the pipe body, the first guide surface is arranged inclined relative to the inner surface of the pipe body, for guiding the first limiting part to be inserted into the pipe body; The side of the second limiting part away from the insertion port is provided with a first limiting surface, for clamping with the first limiting part when the connector is inserted into the pipe body.

21. An electrical device, comprising: The electric device comprises: The battery device according to any one of claims 1 to 15; or the pipe body according to any one of claims 16 to 20.

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