Connector, battery device and electric equipment

Abstract

The utility model discloses a connector, a battery device and electric equipment, and relates to the technical field of battery devices. The connector comprises a connector body and a liquid cooling piece, and the connector body is provided with a connecting assembly; the liquid cooling piece is sleeved on the connecting assembly; the liquid cooling part is provided with a cooling flow channel, the cooling flow channel is annularly arranged on the connecting assembly, and the cooling flow channel is arranged to communicate with the circulating heat exchange loop. According to the technical scheme, the heat dissipation effect of the assembly can be improved, and the heat dissipation effect of the connector is further improved.

Description

TECHNICAL FIELD

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

[0002] In the related art, the high-voltage connector is one of the connectors, and the high-voltage connector is widely used in circuit connection in a high-voltage and large-current working environment. In the battery device, the high-voltage connector cooperates with a matched conductive cable to form an electric energy transmission path.

[0003] In recent years, with the continuous improvement of user requirements for charging and power utilization time efficiency, the current load of the battery device continues to increase, resulting in a significant increase in the current flowing through the high-voltage connector. In this process, the electrical connection assembly of the high-voltage connector generates a large amount of heat due to the contact resistance and Joule heat effect. The commonly used high-voltage connector still has deficiencies in the heat management design, and is prone to local overheating or low overall heat dissipation efficiency. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides a connector, a battery device and an electric equipment, which aims to improve the heat dissipation effect of the connector.

[0005] In a first aspect, the present application provides a connector, which comprises a connector body and a liquid cooling member, the connector body has a connection assembly; the liquid cooling member is sleeved on the connection assembly; the liquid cooling member is provided with a cooling flow channel, the cooling flow channel is annularly arranged on the connection assembly, and the cooling flow channel is arranged in communication with a circulating heat exchange circuit.

[0006] The technical scheme of the present application increases the contact area of the liquid cooling member and the connection assembly by sleeving the liquid cooling member on the connection assembly and annularly arranging the cooling flow channel in the liquid cooling member on the connection assembly, shortens the path of heat transfer from the connection assembly to the cooling medium, and the heat generated by the connection assembly can be taken away faster, thereby improving the heat dissipation effect of the connection assembly and the heat dissipation effect of the connector.

[0007] In some embodiments, the connection assembly comprises at least two connection pieces; each connection piece comprises a main body part and two wire parts, and the two wire parts are located at opposite ends of the main body part; and the liquid cooling member is sleeved on the main body part of the at least two connection pieces. In this way, the liquid cooling member is sleeved on the at least two main body parts, which can simplify the structure of the liquid cooling member and facilitate the miniaturization of the connector.

[0008] In some embodiments, the connector body comprises a housing, the connector is disposed in the housing, and at least part of the main body portion protrudes out of the housing; the liquid cooling member is disposed on the part of the main body portion protruding out of the housing. In this way, the liquid cooling member is mainly disposed outside the housing, which can reduce the modification of the existing interface standard and structure, and compared with the integration of a complex cooling channel inside the housing, the external sleeve type liquid cooling member of the present embodiment is simple to process.

[0009] In some embodiments, the liquid cooling member comprises a liquid cooling plate, an inlet liquid portion and an outlet liquid portion disposed on the liquid cooling plate; the liquid cooling plate is disposed on the main body portion; at least part of the inlet liquid portion protrudes out of the liquid cooling plate in a direction away from the housing; and / or at least part of the outlet liquid portion protrudes out of the liquid cooling plate in a direction away from the housing. In this way, the interface of the flow channel of the liquid cooling member is disposed on the side away from the housing, which can provide more installation space and facilitate the connection of the liquid cooling member and the external circulating heat exchange loop.

[0010] In some embodiments, the liquid cooling plate is provided with a plurality of sub-flow channels; the inlet liquid portion is provided with an inlet liquid passage and an inlet liquid interface, the inlet ends of the plurality of sub-flow channels are respectively in communication with the inlet liquid passage, and the inlet liquid interface is disposed in communication with the circulating heat exchange loop; the outlet liquid portion is provided with an outlet liquid passage and an outlet liquid interface, the outlet ends of the plurality of sub-flow channels are respectively in communication with the outlet liquid passage, and the outlet liquid interface is disposed in communication with the circulating heat exchange loop. In this way, the cooling flow channel is divided into a plurality of parallel channels, which can reduce the heat exchange unevenness caused by excessively high or low flow velocity of a single channel under the given total flow and pump pressure conditions, and reduce local hot spots.

[0011] In some embodiments, the plurality of sub-flow channels are arranged along the axial direction of the main body portion, and the plurality of sub-flow channels are arranged along the circumferential direction of the main body portion. In this way, the heat dissipation effect of the two wiring portions is good, the overall heat dissipation effect of the connector is uniform, and the problem of local overheating can be reduced.

[0012] In some embodiments, the inlet liquid portion is configured as an inlet liquid pipe, and the outlet liquid portion is configured as an outlet liquid pipe; the inlet liquid pipe is located on the inner side of the liquid cooling plate; and / or the outlet liquid pipe is located on the inner side of the liquid cooling plate. The present embodiment is convenient for docking with a standard hose / quick plug connector, and the interface standardization is conducive to assembly consistency and maintenance; and the mechanical impact and vibration resistance is stronger.

[0013] In some embodiments, the liquid cooling member comprises an outer ring plate and an inner ring plate disposed in the outer ring plate; the outer ring plate and the inner ring plate enclose and define the cooling flow channel. In this way, the heat conduction area between the liquid cooling member and the connector is large, which can improve the heat dissipation effect.

[0014] In some embodiments, the inner ring plate is provided with an opening, the inner ring plate has two opposite edges at the opening; the liquid inlet part is connected to one of the two edges, the liquid outlet part is connected to the other of the two edges, and the liquid inlet part and the liquid outlet part are arranged in a spaced manner. In this way, the installation of the inner ring plate can be facilitated while maintaining the integrity of the appearance of the liquid cooling component, and the space left by the opening can accommodate the liquid inlet part and the liquid outlet part, which is beneficial to the miniaturization of the liquid cooling component.

[0015] In some embodiments, the inner ring plate is provided with a bulge part arranged in a bulging manner away from the outer ring plate; the bulge part is arranged in a circumferential extending manner along the inner ring plate; and the cooling flow channel is defined between the bulge part and the outer ring plate. In this way, the processing difficulty of the liquid cooling component can be reduced, and the heat dissipation effect can be improved.

[0016] In some embodiments, the number of the bulge parts is multiple, the multiple bulge parts are arranged in a direction from the wiring part to the main body part, and the multiple bulge parts are arranged in a circumferential extending manner along the main body part. In this way, the overall heat dissipation effect of the connecting component is relatively uniform, and the problem of local overheating can be reduced.

[0017] In some embodiments, the inner ring plate further comprises two end parts, and the multiple bulge parts are arranged between the two end parts; and the two end parts are respectively sealingly connected to the outer ring plate. In this way, the processing difficulty can be reduced, and the sealing performance of the connection between the inner ring plate and the outer ring plate can be improved.

[0018] In some embodiments, the inner ring plate further comprises a partition part located between adjacent bulge parts; and on a side facing the main body part, a groove is defined between the adjacent bulge parts and the partition part. In this way, the structure of the groove can further increase the contact area between the liquid cooling component and the heat-conducting adhesive, which is beneficial to the heat transfer between the liquid cooling component and the main body part, thereby improving the heat dissipation effect.

[0019] In some embodiments, the connector further comprises a heat-conducting body; the main body part is provided with a first heat-conducting surface, the liquid cooling component is provided with a second heat-conducting surface, and the heat-conducting body is embedded between the first heat-conducting surface and the second heat-conducting surface. In this way, the heat-conducting structure between the main body part and the liquid cooling component is a heat-conducting surface, heat can be rapidly spread from the connecting component to the entire liquid cooling component by using the heat-conducting surface for heat conduction, which relieves the local accumulation of heat, makes the temperature field between the connecting component and the liquid cooling component more uniform and flat, and reduces local overheating.

[0020] In some embodiments, the shell has a shell main part and a flange part arranged in sequence along a first direction; the connecting member is arranged in the shell along the first direction, one of the connecting parts is located in the shell main part, at least part of the main body part and another of the connecting parts protrude from the flange part; and the liquid cooling member is located on a side of the flange part away from the shell main part. In this embodiment, the connector is used for connecting with the connecting structure of other devices in a flange structure, and the flange connection uniformly applies pre-tightening force through a plurality of bolts, which facilitates assembly and disassembly while maintaining a firm connection.

[0021] In a second aspect, the application provides a battery device, which comprises a device main body and the connector of any one of the preceding embodiments, and comprises a box body and a battery cell arranged in the box body; the connector body of the connector is arranged in the box body, and the connecting assembly is connected with the battery cell.

[0022] In some embodiments, the device main body is further provided with a heat exchange channel for heat exchange with the battery cell, the heat exchange channel constitutes at least part of the circulating heat exchange circuit, and the cooling flow channel is in communication with the heat exchange channel. In this way, a separate circulating circuit does not need to be arranged for the high-pressure connecting member, and the structure of the battery device can be further simplified.

[0023] The application also provides a power consumption device, which comprises the battery device of any one of the preceding embodiments, and the battery device is used for providing electric energy.

[0024] The above description is only a summary of the technical solutions of the application. In order to enable the technical means of the application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following detailed description of the specific embodiments of the application is provided. BRIEF DESCRIPTION OF DRAWINGS

[0025] 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 accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the drawings indicate the same or similar elements. In the drawings:

[0026] Figure 1 A structural schematic diagram of a vehicle of some embodiments of the application;

[0027] Figure 2 An exploded structural schematic diagram of a battery device of some embodiments of the application;

[0028] Figure 3 An exploded structural schematic diagram of a battery cell of some embodiments of the application;

[0029] Figure 4 This is a schematic diagram of the connector structure according to some embodiments of this application;

[0030] Figure 5 for Figure 4 The exploded view of the connector shown.

[0031] Figure 6 for Figure 5 An exploded view of the liquid cooling component;

[0032] Figure 7 for Figure 6 A schematic diagram of the inner ring plate.

[0033] The reference numerals in the detailed embodiments are as follows:

[0034] 1. Vehicle; 10. Battery unit; 20. Controller; 30. Motor; 40. Connector; 100. Battery cell; 110. Cell housing; 120. End cap; 121. Electrode terminal; 130. Cell assembly; 200. Housing; 210. First part; 220. Second part; 300. Connector body; 310. Connection assembly; 311. Connector; 3111. Main body; 3111a. First heat-conducting surface; 3112. Wiring part; 320. Housing; 321. Housing body; 322. Flange; 400, Liquid-cooled component; 402, Second heat-conducting surface; 400a, Liquid-cooled plate; 410, Outer ring plate; 420, Inner ring plate; 421, Raised portion; 422, Separator; 423, Groove; 424, End; 425, Opening; 426, Edge; 430, Liquid inlet; 431, Liquid inlet channel; 432, Liquid inlet interface; 440, Liquid outlet; 441, Liquid outlet channel; 442, Liquid outlet interface; 401, Cooling flow channel; 401a, Sub-flow channel; 500, Heat conductor; x, First direction.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0039] In this paper, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] 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 means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects. In the description of the embodiments of the present application, the term "multiple" means more than two, and similarly, "multiple groups" means more than two groups, and "multiple pieces" means more than two pieces.

[0041] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0042] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "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 mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0043] The connector is a functional element, and the high-voltage connector is a kind of connector, which is widely used in circuit connection under high-voltage and large-current working environment. In the battery device, the connector cooperates with the matched conductive cable to form an electric energy transmission path: in the discharging stage, it safely and efficiently transports the high-voltage electric energy stored in the battery device to the electric equipment through the electric circuit; in the charging stage, it acts as a charging interface to receive the electric energy input by the external charging equipment.

[0044] In recent years, with the continuous improvement of users' requirements on charging and power utilization time efficiency, the current load of the battery device continues to increase, resulting in a significant increase in the current flowing through the connector. In this process, the connection assembly of the connector generates a large amount of heat due to the contact resistance and Joule heat effect.

[0045] In the prior art, the heat dissipation structure of the connector usually includes a mounting bracket and a heat conduction member arranged on the bracket. The mounting bracket is fixed to the box body of the battery device, and the heat conduction member is clamped between the wiring terminal group of the connector and the water-cooling plate of the box body to conduct the heat generated by the wiring terminal assembly to the water-cooling plate for heat dissipation. However, this heat dissipation structure has the problems of complex overall structure, large assembly difficulty, long cooling path, limited effective cooling area, and low overall heat dissipation efficiency.

[0046] Therefore, in order to solve the above problems that the connector is prone to local overheating or low overall heat dissipation efficiency, the technical scheme of the present application improves the heat dissipation structure of the connector. By arranging a liquid cooling member, a cooling flow channel is arranged on the liquid cooling member, the liquid cooling member is sleeved on the connection assembly of the connector, and the cooling flow channel is arranged around the connection assembly. The contact area of the cooling flow channel and the connection assembly is increased, the heat transfer path from the connection assembly to the cooling medium is shortened, and the heat generated by the connection assembly can be removed faster, thereby improving the heat dissipation effect of the connection assembly.

[0047] The connector disclosed in the embodiments of the present application includes but is not limited to a high-voltage connector, which can be a low-voltage connector or other types of connectors.

[0048] The battery device disclosed in the embodiments of the present application can be used in electric equipment such as vehicles, ships or aircraft, etc. The power supply system of the electric equipment can be composed of the battery monomer and the battery disclosed in the present application. In this way, it is beneficial to alleviate and automatically adjust the deterioration of the cell swelling force, supplement the consumption of electrolyte, and improve the stability of battery performance and battery life.

[0049] The embodiments of the present application provide a power consumption device using a battery device as a power supply. The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0050] The following embodiments are described by taking a power consumption device as a vehicle in an embodiment of the present application for convenience of description. In the embodiments of the present application, a label with an arrow indicates a hole, a surface, a cavity or a space.

[0051] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 1 provided in some embodiments of the present application is shown. The vehicle 1 can be a fuel automobile, a gas automobile or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The vehicle 1 is internally provided with a battery. The battery can be arranged at the bottom, the head or the tail of the vehicle 1. The battery can be used for power supply of the vehicle 1. For example, the battery can be used as an operating power supply of the vehicle 1. The vehicle 1 can further include a controller 20 and a motor 30. The controller 20 is used to control the battery to supply power to the motor 30, for example, to meet the working power demand of the vehicle 1 during starting, navigation and driving. In some embodiments of the present application, the battery can be used not only as an operating power supply of the vehicle 1, but also as a driving power supply of the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0052] Please refer to Figure 2 , Figure 2Figure 1 is a schematic diagram of an exploded view of a battery device 10 according to some embodiments of the present application. The battery device 10 includes a case 200 and a battery cell 100, which is accommodated in the case 200. The case 200 is configured to provide a space for accommodating the battery cell 100, and can have various structures. In some embodiments, the case 200 can include a first part 210 and a second part 220, which are coupled to each other to define a space for accommodating the battery cell 100. The second part 220 can have a hollow structure with an opening 425 at one end, and the first part 210 can have a plate structure which is coupled to the opening 425 of the second part 220 to define the space for accommodating the battery cell 100 together with the second part 220. Alternatively, the first part 210 and the second part 220 can both have a hollow structure with an opening 425 at one side, and the opening 425 of the first part 210 is coupled to the opening 425 of the second part 220. Of course, the case 200 formed by the first part 210 and the second part 220 can have various shapes, such as a cylindrical shape, a cuboid shape, etc.

[0053] In the battery device 10, the battery cell 100 can be multiple, and the multiple battery cells 100 can be connected in series, in parallel, or in a mixed manner. The mixed manner means that the multiple battery cells 100 are connected in series and in parallel. The multiple battery cells 100 can be directly connected in series, in parallel, or in a mixed manner, and then the multiple battery cells 100 are accommodated in the case 200. Of course, the battery device 10 can also be configured such that the multiple battery cells 100 are connected in series, in parallel, or in a mixed manner to form a group of battery cells 100, and then the multiple groups of battery cells 100 are connected in series, in parallel, or in a mixed manner to form a whole, which is accommodated in the case 200. The battery device 10 can further include other structures, for example, the battery device 10 can further include a busbar component for electrically connecting the multiple battery cells 100.

[0054] The battery cell 100 can include, but is not limited to, a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium ion battery, a sodium-ion battery, or a magnesium-ion battery, etc. The shape of the battery cell 100 can include, but is not limited to, a cylindrical shape, a flat shape, a cuboid shape, or other shapes, etc. The battery cell 100 can include, but is not limited to, a cylindrical battery cell 100, a square battery cell 100, a soft-pack battery cell 100, and a blade battery cell 100 according to the packaging manner.

[0055] Please refer to Figure 3 , Figure 3 Figure 2 is a schematic diagram of an exploded view of a battery cell 100 according to some embodiments of the present application. The battery cell 100 is the smallest unit of a battery. As shown in Figure 2, the battery cell 100 includes a positive electrode 210, a negative electrode 220, and a separator 230. The positive electrode 210 and the negative electrode 220 are connected to each other via the separator 230, and the positive electrode 210 and the negative electrode 220 are respectively connected to a positive terminal 240 and a negative terminal 250. Figure 3As shown, the battery cell 100 includes an end cover 120, a cell shell 110, a cell assembly 130, and other functional components.

[0056] The end cover 120 refers to a component that covers the opening 425 of the cell shell 110 to isolate the internal environment of the battery cell 100 from the external environment. Without limitation, the shape of the end cover 120 can be adapted to the shape of the cell shell 110 to fit the cell shell 110. Optionally, the end cover 120 can be made of a material with certain hardness and strength, so that the end cover 120 is not easily deformed when subjected to extrusion collision, so that the battery cell 100 can have higher structural strength, and the safety performance can also be improved. Functional components such as electrode terminals 121 can be provided on the end cover 120. The electrode terminals 121 can be used to electrically connect with the cell assembly 130 for outputting or inputting the electrical energy of the battery cell 100. In some embodiments, a pressure relief mechanism for relieving the internal pressure of the battery cell 100 when the internal pressure or temperature of the battery cell 100 reaches a threshold value can also be provided on the end cover 120. The material of the end cover 120 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon. In some embodiments, an insulating piece can also be provided on the inner side of the end cover 120, which can be used to isolate the electrical connection components in the cell shell 110 from the end cover 120 to reduce the risk of short circuit. Exemplarily, the insulating piece can be plastic, rubber, etc.

[0057] The cell shell 110 is a component for fitting the end cover 120 to form the internal environment of the battery cell 100, wherein the formed internal environment can be used to accommodate the cell assembly 130, the electrolyte, and other components. The cell shell 110 and the end cover 120 can be independent components, and the opening 425 can be provided on the cell shell 110, and the end cover 120 is covered on the opening 425 to form the internal environment of the battery cell 100. Without limitation, the end cover 120 and the cell shell 110 can also be integrated, specifically, the end cover 120 and the cell shell 110 can form a common connecting surface before other components enter the shell, and when it is necessary to encapsulate the internal part of the cell shell 110, the end cover 120 is covered on the cell shell 110. The cell shell 110 can be various shapes and various sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the cell shell 110 can be determined according to the specific shape and size of the cell assembly 130. The material of the cell shell 110 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon.

[0058] The cell assembly 130 is a component in which electrochemical reactions occur in the battery cell 100. One or more cell assemblies 130 can be contained within the cell case 110. The cell assembly 130 is mainly formed by winding or layering a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions with active materials that constitute a main body portion 3111 of the cell assembly 130, and portions without active materials that each constitute a tab. The positive electrode tab and the negative electrode tab can be located together at one end of the main body portion 3111 or at opposite ends of the main body portion 3111, respectively. During charging and discharging of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminal 121 to form a current loop.

[0059] In an embodiment, referring to Figure 2 , the battery device 10 includes a device main body and a connector 40, the device main body includes a box 200 and a battery cell 100 provided in the box 200; the connector body 300 of the connector 40 is provided in the box 200, and the connection assembly 310 is connected to the battery cell 100.

[0060] The device main body can be understood as a structure containing the battery cell 100, which is configured with a heat exchange channel for heat exchange with the battery cell 100, and the heat exchange channel has a connection port for connecting with an external pipeline or other components. In the embodiment, the device main body includes a box 200 and a battery cell 100 provided in the box 200, and in some embodiments, the device main body can also include an electronic control module. The heat exchange channel can be used to communicate with the external pipeline to allow the heat exchange medium to enter, thereby achieving heat dissipation for the battery cell 100 located in the box 200. Among them, the heat exchange channel can be composed of an independent heat exchange assembly, or can be composed of the box wall of the box 200, that is, at least part of the box wall is hollowly arranged, thereby constructing at least part of the heat exchange channel; In addition, the independent heat exchange assembly can also constitute part of the heat exchange channel, and the box wall of the box 200 can also constitute part of the heat exchange channel.

[0061] The connection assembly 310 is connected to the battery cell 100, wherein the connection is usually an electrical connection. Generally, the battery cell 100 and the connector 40 are located at the starting point and the terminal point of the battery device 10, respectively, and there are other connecting components between the battery cell 100 and the connector 40. Exemplarily, taking a plurality of battery cells 100 as an example, the plurality of battery cells 100 are combined into a battery module by series connection and / or parallel connection, and one or more battery modules can be contained in one battery device 10, and the total positive electrode and the total negative electrode of the one or more battery modules are connected to the connector 40.

[0062] In an embodiment, the device body is further provided with a heat exchange channel for heat exchange with the battery monomer 100, the heat exchange channel constitutes at least part of the circulating heat exchange loop, and the cooling flow channel 401 is in communication with the heat exchange channel. That is, in the present embodiment, the cooling flow channel 401 of the connector 40 is connected to the heat exchange channel of the battery device 10, so that a separate circulating loop does not need to be provided for the high-voltage connecting piece 311, and the structure of the battery device 10 can be further simplified.

[0063] According to some embodiments of the present application, please refer to Figure 4 , and further refer to Figures 5 to 7 , the connector 40 comprises a connector body 300 and a liquid cooling member 400, the connector body 300 has a connecting assembly 310; the liquid cooling member 400 is sleeved on the connecting assembly 310; the liquid cooling member 400 is provided with a cooling flow channel 401, the cooling flow channel 401 is annularly arranged on the connecting assembly 310, and the cooling flow channel 401 is arranged in communication with the circulating heat exchange loop.

[0064] The connector body 300 refers to the components constituting the basic structure and function of the connector 40, for example, the connector body 300 comprises a housing 320 and a connecting assembly 310, the housing 320 generally refers to the shell of the connector, and is used to provide the assembly basis and necessary mechanical support for each component of the connector 40; the connecting assembly 310 is the component responsible for completing the electrical connection in the connector 40.

[0065] The connecting assembly 310 generally comprises at least two connecting pieces 311, each connecting piece 311 has two terminal ends, which can also be called first terminal end and second terminal end; wherein, one of the two terminal ends can be a male terminal end, and the other can be a female terminal end; or both of the two terminal ends can be male terminal ends, or both of the two terminal ends can be female terminal ends. In some embodiments, the connector body 300 further comprises an insulating member arranged between the two connecting pieces 311 to realize the insulation between the connecting pieces 311. In other embodiments, the connector body 300 further comprises some structural accessories and mounting accessories, such as positioning pins, guide pins, connecting rings, sealing rings, rotating levers, locking structures, etc.

[0066] The liquid cooling member 400 is a component for heat exchange with the connecting assembly 310. The liquid cooling member 400 can be cylindrical, elliptical cylindrical, square cylindrical, or the like, or can have one or more heat exchange pipes extending helically in a direction to define a sleeve-like shape. The liquid cooling member 400 is sleeved on the connecting assembly 310. Since the number of the connecting members 311 is at least two, i.e., the number of the connecting members 311 is multiple, one liquid cooling member 400 can be sleeved on one connecting member 311, multiple liquid cooling members 400 and multiple connecting members 311 can be arranged one-to-one, or one liquid cooling member 400 can be sleeved on two or more connecting members 311. Hereinafter, the number of the connecting members 311 is two, and one liquid cooling member 400 is sleeved on two connecting members 311 as an example.

[0067] The liquid cooling member 400 is a component for heat exchange with the connecting assembly 310. The liquid cooling member 400 can be cylindrical, elliptical cylindrical, square cylindrical, or the like, or can have one or more heat exchange pipes extending helically in a direction to define a sleeve-like shape. The liquid cooling member 400 is sleeved on the connecting assembly 310. Since the number of the connecting members 311 is at least two, i.e., the number of the connecting members 311 is multiple, one liquid cooling member 400 can be sleeved on one connecting member 311, multiple liquid cooling members 400 and multiple connecting members 311 can be arranged one-to-one, or one liquid cooling member 400 can be sleeved on two or more connecting members 311. Hereinafter, the number of the connecting members 311 is two, and one liquid cooling member 400 is sleeved on two connecting members 311 as an example.

[0068] The cooling flow channel 401 is annularly arranged on the connecting assembly 310, i.e., annularly arranged on the connecting members 311. The cooling flow channel 401 is arranged substantially around the connecting members 311 for one or nearly one round, for example, one round is 360°, and the cooling flow channel 401 covers a range of 270° to 360° of the one round. The cooling flow channel 401 can be a flow channel extending helically in a direction from one terminal to another terminal. In the embodiment in which the cooling flow channel 401 includes multiple sub-flow channels 401a, the multiple sub-flow channels 401a can be arranged circumferentially along the connecting members 311, extend in a direction from one terminal to another terminal, or extend helically in a direction from one terminal to another terminal. In an example, as shown in Figs. 2 and 3, the multiple sub-flow channels 401a can be arranged circumferentially along the connecting members 311 and extend in a direction from one terminal to another terminal. Figure 6 and Figure 7 The cooling flow channel 401 can be a flow channel extending helically in a direction from one terminal to another terminal. In the embodiment in which the cooling flow channel 401 includes multiple sub-flow channels 401a, the multiple sub-flow channels 401a can be arranged circumferentially along the connecting members 311, extend in a direction from one terminal to another terminal, or extend helically in a direction from one terminal to another terminal. In an example, as shown in Figs. 2 and 3, the multiple sub-flow channels 401a can be arranged circumferentially along the connecting members 311 and extend in a direction from one terminal to another terminal.

[0069] The circulating heat exchange circuit can be an independent circulating heat exchange circuit, i.e., a circulating circuit specially arranged for the connector 40. After the connector 40 is applied to the battery device 10, the circulating heat exchange circuit can be a circulating heat exchange circuit in a heat management system of the battery device 10. The heat exchange medium in the flow channel in the circulating heat exchange circuit can be water or refrigerant, etc.

[0070] The liquid cooling member and the connector body can be integrally arranged, for example, the liquid cooling member and the connector body can be integrally arranged after multiple injection molding or by welding, of course, the liquid cooling member and the connector body can also be detachably connected.

[0071] The technical solution of the present application sets the liquid cooling member 400 on the connection assembly 310, and the cooling flow channel 401 in the liquid cooling member 400 is arranged around the connection assembly 310, thereby increasing the contact area of the cooling flow channel 401 and the connection assembly 310, shortening the path of heat transfer from the connection assembly 310 to the cooling medium, and enabling the heat generated by the connection assembly 310 to be removed more quickly, thereby improving the heat dissipation effect of the connection assembly 310 and further improving the heat dissipation effect of the connector 40.

[0072] In some embodiments, referring to Figure 4 and Figure 5 the connection assembly 310 includes at least two connection members 311; each connection member 311 includes a body part 3111 and two wire parts 3112, and the two wire parts 3112 are located at opposite ends of the body part 3111; and the liquid cooling member 400 is arranged around the body part 3111 of the at least two connection members 311.

[0073] Generally, the body part 3111 is an electrically conductive element, and the body part 3111 is connected with the shell 320 to define the mounting position of the connection member 311; the wire part 3112 can also be referred to as a wire terminal, and is also the position of the wire terminal, and the two wire parts 3112 are located at opposite ends of the body part 3111.

[0074] The liquid cooling member 400 is arranged around the body part 3111 of the at least two connection members 311, that is, one liquid cooling member 400 is arranged around the at least two body parts, for example, one liquid cooling member 400 is arranged around two body parts 3111, three body parts 3111, or more than three body parts 3111. In this way, the structure of the liquid cooling member 400 can be simplified, and the connector 40 can be miniaturized. In other embodiments, one liquid cooling member 400 can be arranged around one connection member 311, and a plurality of liquid cooling members 400 and a plurality of connection members 311 are arranged one by one.

[0075] In the present embodiment, the liquid cooling member 400 is arranged around the at least two body parts 3111, thereby simplifying the structure of the liquid cooling member 400 and facilitating the miniaturization of the connector 40.

[0076] In an embodiment, the connector body 300 includes a shell 320, the connection member 311 is arranged through the shell 320, and at least part of the body part 3111 protrudes from the shell 320; and the liquid cooling member 400 is arranged around the part of the body part 3111 protruding from the shell 320.

[0077] As mentioned above, the shell 320 is used to provide assembly base and necessary mechanical support for components of the connector 40. Its internal structure, shape and size are designed according to the assembly requirements of the terminal; the shell 320 generally comprises a shell main body 321 and a mounting portion, the shell main body 321 is the basic part of the shell 320, and its structure can be various, for example, it can be cylindrical, cuboid and the like. The inside of the shell main body 321 can be provided with one or more passages for accommodating the connecting member 311, and the mounting portion is generally understood as the mounting part of the connector 40 connected with external devices, such as the battery device 10 and the like, which can be a flange portion 322 or other mounting brackets, which are not specifically limited here.

[0078] In the embodiment, the liquid cooling member 400 is mainly arranged outside the shell 320, which can reduce the modification of the existing interface standard and structure, and secondly, compared with the integrated complex cooling channel inside the shell 320, the external sleeve type liquid cooling member 400 is simple to process.

[0079] In some embodiments, referring to Figure 5 and Figure 6 , the shell 320 has the shell main body 321 and the flange portion 322 arranged in sequence along the first direction x; the connecting member 311 is arranged through the shell 320 along the first direction x, one terminal portion 3112 is located in the shell main body 321, and at least part of the main body portion 3111 and the other terminal portion 3112 protrude from the flange portion 322; the liquid cooling member 400 is located on the side of the flange portion 322 away from the shell main body 321.

[0080] The flange portion 322 is arranged at one end of the shell main body 321 along the first direction x, and in a plane perpendicular to the first direction x, the outer contour of the flange portion 322 can be square, circular or other geometric shapes. The flange portion 322 can be provided with a socket connected with the passage of the shell main body 321, and the connecting member 311 is assembled on the flange portion 322 and the shell main body 321 through the socket. The flange portion 322 has a certain thickness along the first direction x, and has a mounting plane on the side away from the shell main body 321, which can provide a mounting space to assemble components such as insulation members, and the flange portion 322 can also be provided with mounting holes for assembling bolts, screws and other fasteners to realize the connection and fixation of the connector 40 with external equipment, which can be but not limited to a distribution box, a box body 200 of a battery device 10 and the like. The shell main body 321 and the flange portion 322 can be integrally arranged, or combined together by welding, bolt connection and the like. The materials of the shell main body 321 and the flange portion 322 can be various, for example, they can be engineering plastics, metals or other high-strength composite materials. The materials of the shell main body 321 and the flange portion 322 can be the same or different, and it can be understood that when the shell main body 321 and the flange portion 322 are metal members, insulation protection is needed to reduce short circuit.

[0081] In this embodiment, the mounting part adopts flange part 322, that is, the connector 40 is used to connect with other devices using flange structure. The flange connection is achieved by applying pre-tightening force evenly through multiple bolts, which facilitates assembly and disassembly while maintaining a strong connection.

[0082] In some embodiments, such as Figure 4 and Figure 5 As shown, the liquid cooling component 400 includes a liquid cooling plate 400a, a liquid inlet portion 430 and a liquid outlet portion 440 disposed on the liquid cooling plate 400a, and the liquid cooling plate 400a is sleeved on the main body portion 3111; at least a portion of the liquid inlet portion 430 protrudes from the liquid cooling plate 400a in a direction away from the housing 320; at least a portion of the liquid outlet portion 440 protrudes from the liquid cooling plate 400a in a direction away from the housing 320.

[0083] The liquid cooling plate 400a, which constitutes the cooling channel 401, is fitted onto the main body 3111. The liquid cooling plate 400a is fitted onto the connector 311, allowing it to be annular or cylindrical. The annular shape can be circular, elliptical, cylindrical, elliptical-cylindrical, or square. The shape of the liquid cooling plate 400a is typically adapted to the shape of the main body 3111 to ensure it can be fitted onto the main body 3111. In some embodiments, to facilitate the fitting of the liquid cooling plate 400a onto the main body 3111, the liquid cooling plate 400a may also have an opening 425. The inlet section 430 and the outlet section 440 are the parts that connect the cooling channel 401 to the external circulation loop. The liquid cooling plate 400a, the inlet section 430, and the outlet section 440 can be integrally formed or detachable. The liquid cooling plate 400a, the inlet section 430, and the outlet section 440 can be integrally formed by injection molding or welding. When the liquid cooling plate 400a, the inlet section 430, and the outlet section 440 are detachable, the connection between them usually needs to be sealed.

[0084] At least a portion of the liquid inlet portion 430 protrudes from the liquid cooling plate 400a in a direction away from the housing 320, that is, at least a portion of the liquid inlet portion 430 protrudes from the liquid cooling plate 400a, and the portion protruding from the liquid cooling plate 400a is located on the side of the liquid cooling plate 400a away from the housing 320; similarly, at least a portion of the liquid outlet portion 440 protrudes from the liquid cooling plate 400a in a direction away from the housing 320, in other words, at least a portion of the liquid outlet portion 440 protrudes from the liquid cooling plate 400a, and the liquid outlet portion 440 is located on the side of the liquid cooling plate 400a away from the housing 320.

[0085] In this embodiment, the flow channel interface of the liquid cooling component 400 is located on the side away from the housing 320, which can provide more installation space and facilitate the connection of the liquid cooling component 400 with the external circulating heat exchange circuit.

[0086] In some embodiments, at least part of the liquid inlet portion 430 protrudes from the liquid cooling plate 400a in a direction away from the housing 320; and at least part of the liquid outlet portion 440 can not protrude from the housing 320, or can protrude from the housing 320 in other directions. In some other embodiments, at least part of the liquid outlet portion 440 protrudes from the liquid cooling plate 400a in a direction away from the housing 320; and at least part of the liquid inlet portion 430 can not protrude from the housing 320, or can protrude from the housing 320 in other directions.

[0087] In some embodiments, referring to Figure 7 , the liquid cooling plate 400a is provided with a plurality of sub-flow channels 401a; the liquid inlet portion 430 is provided with a liquid inlet passage 431 and a liquid inlet interface 432, the liquid inlet ends of the plurality of sub-flow channels 401a are respectively in communication with the liquid inlet passage 431, and the liquid inlet interface 432 is arranged to be in communication with the circulating heat exchange circuit; the liquid outlet portion 440 is provided with a liquid outlet passage 441 and a liquid outlet interface 442, the liquid outlet ends of the plurality of sub-flow channels 401a are respectively in communication with the liquid outlet passage 441, and the liquid outlet interface 442 is arranged to be in communication with the circulating heat exchange circuit.

[0088] The liquid cooling plate 400a is provided with a plurality of sub-flow channels 401a, which can be all in parallel or partially in parallel. In the embodiment of all in parallel, the liquid inlet ends of the plurality of sub-flow channels 401a are in communication with the liquid inlet passage, and the liquid outlet ends of the plurality of sub-flow channels 401a are in communication with the liquid outlet passage. Further, the plurality of sub-flow channels 401a can have the same flow area or different flow areas. For example, the flow area of the part close to the wiring end can be larger, because the heat generated by the wiring portion 3112 is higher, so as to reduce the problem of local uneven heat dissipation.

[0089] In the embodiment, the cooling flow channel 401 is divided into a plurality of parallel channels, which can reduce the uneven heat exchange caused by excessively high or low flow velocity of a single channel under the condition of given total flow and pump pressure, and reduce local hot spots.

[0090] In some embodiments, the plurality of sub-flow channels 401a are arranged along the axial direction of the main body portion 3111, and the plurality of sub-flow channels 401a extend along the circumferential direction of the main body portion 3111.

[0091] The embodiment is based on the previous embodiment, and the plurality of sub-flow channels 401a are arranged in parallel. Since the wiring portions 3112 are arranged at both ends of the main body portion 3111, the heat generated by the wiring portions 3112 is higher, so compared with the arrangement of the plurality of sub-flow channels 401a along the circumferential direction of the main body portion 3111, the plurality of sub-flow channels 401a are arranged along the extension direction of the main body portion 3111.

[0092] In this embodiment, multiple sub-channels 401a are arranged along the axial direction of the main body 3111 and extend circumferentially along the main body 3111, so that the heat dissipation effect of the two wiring portions 3112 is better and the overall heat dissipation effect of the connector 311 is more uniform, which can reduce the problem of local overheating.

[0093] In some embodiments, please refer to Figure 6 and Figure 7 The liquid inlet 430 is configured as a liquid inlet pipe, and the liquid outlet 440 is configured as a liquid outlet pipe; the liquid inlet pipe is located inside the liquid cooling plate 400a; and / or, the liquid outlet pipe is located inside the liquid cooling plate 400a.

[0094] The liquid inlet 430 is configured as a liquid inlet pipe, and the liquid outlet 440 is configured as a liquid outlet pipe; that is, the liquid inlet 430 and the liquid outlet 440 are tubular, and standard pipes can be selected. Taking the liquid cooling plate 400a as an example, which is cylindrical, the liquid cooling plate 400a has an outer side and an inner side, and the liquid inlet pipe and the liquid outlet pipe are located on the inner side of the liquid cooling plate 400a, so that the liquid inlet pipe and the liquid outlet pipe are covered by the liquid cooling plate 400a.

[0095] In this embodiment, the liquid inlet 430 and the liquid outlet 440 are configured as tubular sections to facilitate docking with standard hoses / quick connectors. Standardized interfaces facilitate assembly consistency and maintenance. The liquid inlet and liquid outlet pipes are located inside the liquid cooling plate 400a, thus the liquid inlet and liquid outlet pipes are covered by the liquid cooling plate 400a, which enhances their resistance to mechanical shock and vibration.

[0096] In some other embodiments, the inlet pipe is located inside the liquid cooling plate 400a, while the outlet pipe may be located outside the liquid cooling plate 400a. In still other embodiments, the outlet pipe is located inside the liquid cooling plate 400a, while the inlet pipe may be located outside the liquid cooling plate 400a.

[0097] In some embodiments, please refer to Figure 6 and Figure 7 The liquid cooling component 400 includes an outer ring plate 410 and an inner ring plate 420 disposed within the outer ring plate 410; the outer ring plate 410 and the inner ring plate 420 enclose and define a cooling flow channel 401.

[0098] The outer ring plate 410 and the inner ring plate 420 can be complete annular plates, or one or both of them can be annular plates with notches or breaks, that is, non-complete annular plates; for example, such as Figure 7The inner ring plate 420 is a ring plate with a break. The outer ring plate 410 and the inner ring plate 420 are usually nested. In one example, the outer ring plate 410 and the inner ring plate 420 can be concentrically nested. In this way, the flow area of ​​the cooling channel 401 between the outer ring plate 410 and the inner ring plate 420 is relatively uniform, and the heat dissipation effect is also relatively uniform. The outer ring plate 410 and the inner ring plate 420 can be integrally set. This integral setting can be integrally injection molded or welded together. Of course, the outer ring plate 410 and the inner ring plate 420 can also be detachably connected. When the outer ring plate 410 and the inner ring plate 420 are detachably connected or welded together, there are sealing requirements at their connection.

[0099] In this embodiment, a plate-shaped liquid cooling component 400 is used, which makes the heat conduction area between the liquid cooling component 400 and the connector 311 larger, thereby improving the heat dissipation effect; secondly, an inner ring plate 420 and an outer ring plate 410 are used, and the outer ring plate 410 can wrap around the main body 3111, thereby protecting the main body 3111.

[0100] In some embodiments, please continue reading Figure 7 The inner ring plate 420 is provided with an opening 425; the inner ring plate 420 has two opposing edges 426 at the opening 425; the liquid inlet 430 is connected to one edge 426 of the two edges 426, and the liquid outlet 440 is connected to the other edge 426 of the two edges 426, with the liquid inlet 430 and the liquid outlet 440 spaced apart.

[0101] The inner ring plate 420 has an opening 425, which means that one or more notches or breaks are intentionally made in the inner annular plate structure of a ring-shaped or cylindrical component. Since the inner ring plate 420 is nested inside the outer ring plate 410, in embodiments where the outer ring plate 410 and the inner ring plate 420 are welded or detachably connected, providing an opening 425 on the inner ring plate 420 or the outer ring plate 410 facilitates the installation between the inner ring plate 420 and the outer ring plate 410. In this embodiment, providing an opening 425 on the inner ring plate 420 can preserve the integrity of the outer ring plate 410, that is, preserve the integrity of the liquid cooling component 400, and can improve the structural strength of the liquid cooling component 400.

[0102] The inner ring plate 420 has two opposite edges 426 at the opening 425; the liquid inlet portion 430 is connected to one of the two edges 426, the liquid outlet portion 440 is connected to the other of the two edges 426, and the liquid inlet portion 430 and the liquid outlet portion 440 are arranged in a spaced manner. Wherein, the liquid inlet portion 430 and the liquid outlet portion 440 are arranged in a length direction of the edge 426, and the liquid inlet portion 430 and the liquid outlet portion 440 are arranged in a spaced manner, so that the inner ring plate 420, the liquid inlet portion 430 and the liquid outlet portion 440 can be nested on the outer ring plate 410 after being integrated. The liquid inlet portion 430 and the liquid outlet portion 440 are arranged at the opening 425, and the flow area of the liquid inlet flow channel and the liquid outlet flow channel is larger than that of any sub-flow channel 401a, so that the space left by arranging the opening 425 can be used to facilitate the miniaturization of the liquid cooling device 400.

[0103] The embodiment can facilitate the installation of the inner ring plate 420 while maintaining the integrity of the appearance of the liquid cooling device 400, and the space left by arranging the opening 425 can be used to accommodate the liquid inlet portion 430 and the liquid outlet portion 440, thereby facilitating the miniaturization of the liquid cooling device 400.

[0104] In some embodiments, please continue to refer to Figure 6 and Figure 7 The inner ring plate 420 is provided with a bulging portion 421 bulging away from the outer ring plate 410; the bulging portion 421 extends along the circumferential direction of the inner ring plate 420; and the cooling flow channel 401 is defined between the bulging portion 421 and the outer ring plate 410.

[0105] The inner ring plate 420 is provided with a bulging portion 421 bulging away from the outer ring plate 410, that is, there is a bulging or protruding structure on the inner ring plate 420, and the protruding structure bulges away from the outer ring plate 410, so that there is a gap between the inner ring plate 420 at the position of the bulging portion 421 and the outer ring plate 410, thereby enclosing the cooling flow channel 401 between the inner ring plate 420 and the outer ring plate 410. The thickness of the plate at the position of the bulging portion 421 is generally the same as that at other positions.

[0106] The embodiment provides the bulging portion 421 on the inner ring plate 420, and the cooling flow channel 401 is defined between the bulging portion 421 and the outer ring plate 410, which is simple in machining process, and the bulging portion 421 can be arbitrarily meandering or coiled on the inner ring plate 420, and can be designed in a spiral or snake shape, thereby facilitating the improvement of the heat dissipation effect. In this way, the machining difficulty of the liquid cooling device 400 is reduced, and the heat dissipation effect is improved.

[0107] In some embodiments, please refer to Figure 7The plurality of protrusions 421 are arranged along a direction from the connecting portion 3112 to the main body portion 3111, and the plurality of protrusions 421 are arranged along a circumferential direction of the main body portion 3111.

[0108] Thus, in the embodiment, the plurality of protrusions 421 cooperate with the outer ring plate 410 to form a plurality of sub-flow channels 401a, the plurality of sub-flow channels 401a are arranged along a direction from the connecting portion 3112 to the main body portion 3111, and the plurality of sub-flow channels 401a are arranged along a circumferential direction of the main body portion 3111.

[0109] In the embodiment, the plurality of sub-flow channels 401a are arranged along an axial direction of the main body portion 3111, and the plurality of sub-flow channels 401a are arranged along a circumferential direction of the main body portion 3111, so that the heat dissipation effects of the two connecting portions 3112 are both good, the overall heat dissipation effect of the connecting member 311 is relatively uniform, and the problem of local overheating can be reduced.

[0110] In some embodiments, referring to Figure 6 and Figure 7 the inner ring plate 420 further comprises two end portions 424, and the plurality of protrusions 421 are arranged between the two end portions 424; and the two end portions 424 are respectively and sealingly connected to the outer ring plate 410.

[0111] Since the inner ring plate 420 and the outer ring plate 410 define a ring-shaped or cylindrical liquid cooling member 400, the end portion 424 is arranged at two ends in the axial direction of the liquid cooling member 400, so that in the welding connection or other processing manner of the inner ring plate 420 and the outer ring plate 410, the arrangement of the end portion 424 increases the weldable area at the edge 426, which is beneficial to reducing the processing difficulty and improving the sealing performance of the connection between the inner ring plate 420 and the outer ring plate 410.

[0112] In some embodiments, referring to Figure 7 the inner ring plate 420 further comprises a partition portion 422, and the partition portion 422 is located between adjacent protrusions 421; and on a side facing the main body portion 3111, the adjacent protrusions 421 and the partition portion 422 define a groove 423.

[0113] The partition portion 422 can be annular, or a plurality of partition segments are arranged along a circumferential direction of the main body portion 3111, that is, the plurality of sub-flow channels 401a can be sequentially connected in parallel, or a small part of the plurality of sub-flow channels 401a can be connected at a local position. In general, a heat conduction body 500 is arranged between the liquid cooling member 400 and the main body portion 3111, and in the embodiment, the groove 423 can be used to accommodate the heat conduction body 500, the structure of the groove 423 can increase the contact area between the liquid cooling member 400 and the heat conduction body 500, which is beneficial to heat transfer between the liquid cooling member 400 and the main body portion 3111, so as to improve the heat dissipation effect.

[0114] One method of assembling connector 40 is as follows: After the connector body and liquid cooling component 400 are manufactured separately, the liquid cooling component 400 is fitted onto the main body 3111 of connector 311. Finally, liquid heat-conducting material 500 is injected between the main body 3111 and the liquid cooling component 400. The liquid heat-conducting material 500 is then allowed to solidify, at which point it also helps to fix the liquid cooling component 400. In this embodiment, the groove 423 structure enhances the fixing effect of the heat-conducting component on the liquid cooling component 400.

[0115] In some embodiments, the connector 40 further includes a heat conductor 500; the main body 3111 is provided with a first heat-conducting surface 3111a, the liquid cooling component 400 is provided with a second heat-conducting surface 402, and the heat conductor 500 is embedded between the first heat-conducting surface 3111a and the second heat-conducting surface 402.

[0116] The heat conductor 500 is typically a thermally conductive and insulating injection-molded material, a polymer material that combines thermal conductivity and insulation properties. For example, the material of the heat conductor 500 can be a base material rubber, meaning the main base material is rubber; in other words, it is essentially made of rubber. The material of the heat conductor 500 is typically a composite of an insulating rubber matrix and an insulating thermally conductive filler, using silicone rubber, epoxy resin, etc., as the matrix and filled with insulating thermally conductive fillers such as alumina and boron nitride. The first thermally conductive surface 3111a and the second thermally conductive surface 402 are typically spaced apart. Generally, the second thermally conductive surface 402 is an annular device, and the heat conductor 500 is embedded in the space between the first thermally conductive surface 3111a and the second thermally conductive surface 402.

[0117] In this embodiment, the heat-conducting structure between the main body 3111 and the liquid cooling component 400 is a heat-conducting surface. By using a heat-conducting surface for heat conduction, heat can be quickly diffused from the connector 311 to the entire liquid cooling component 400, alleviating local heat accumulation and making the temperature field between the connector 311 and the liquid cooling component 400 more uniform and flat, thus reducing local overheating.

[0118] In one embodiment, please refer to Figures 5 to 7The connector 40 comprises a connector body 300 and a liquid cooling member 400. The connector body 300 has a connecting assembly 310. The liquid cooling member 400 is sleeved on the connecting assembly 310. The liquid cooling member 400 is provided with a cooling flow channel 401. The cooling flow channel 401 is annularly arranged on the connecting assembly 310. The cooling flow channel 401 is arranged in communication with a circulating heat exchange circuit. The connecting assembly 310 comprises at least two connecting pieces 311. Each connecting piece 311 comprises a main body part 3111 and two wire connection parts 3112. The two wire connection parts 3112 are located at opposite ends of the main body part 3111. The liquid cooling member 400 is sleeved on the main body part 3111 of the at least two connecting pieces 311. The connector body 300 comprises a shell 320. The connecting piece 311 penetrates through the shell 320. At least part of the main body part 3111 protrudes out of the shell 320. The liquid cooling member 400 is sleeved on the part of the main body part 3111 protruding out of the shell 320. The shell 320 has a shell main part 321 and a flange part 322 arranged in sequence along a first direction x. The connecting piece 311 penetrates through the shell 320 along the first direction x. One wire connection part 3112 is located in the shell main part 321. At least part of the main body part 3111 and the other wire connection part 3112 protrude out of the flange part 322. The liquid cooling member 400 is located on a side of the flange part 322 away from the shell main part 321. The liquid cooling member 400 comprises a liquid cooling plate 400a, a liquid inlet part 430 and a liquid outlet part 440 arranged on the liquid cooling plate 400a. The liquid cooling plate 400a is sleeved on the main body part 3111. At least part of the liquid inlet part 430 protrudes out of the liquid cooling plate 400a in a direction away from the shell 320. At least part of the liquid outlet part 440 protrudes out of the liquid cooling plate 400a in a direction away from the shell 320. The liquid cooling plate 400a is provided with a plurality of sub-flow channels 401a. The liquid inlet part 430 is provided with a liquid inlet passage 431 and a liquid inlet interface 432. The liquid inlet ends of the plurality of sub-flow channels 401a are respectively in communication with the liquid inlet passage 431. The liquid inlet interface 432 is arranged in communication with the circulating heat exchange circuit. The liquid outlet part 440 is provided with a liquid outlet passage 441 and a liquid outlet interface 442. The liquid outlet ends of the plurality of sub-flow channels 401a are respectively in communication with the liquid outlet passage 441. The liquid outlet interface 442 is arranged in communication with the circulating heat exchange circuit. The plurality of sub-flow channels 401a are arranged along the axial direction of the main body part 3111. The plurality of sub-flow channels 401a extend along the circumferential direction of the main body part 3111. The liquid inlet part 430 is configured as a liquid inlet pipe. The liquid outlet part 440 is configured as a liquid outlet pipe. The liquid inlet pipe is located on the inner side of the liquid cooling plate 400a. The liquid outlet pipe is located on the inner side of the liquid cooling plate 400a. The liquid cooling member 400 comprises an outer ring plate 410 and an inner ring plate 420 arranged in the outer ring plate 410. The outer ring plate 410 and the inner ring plate 420 define the cooling flow channel 401. The inner ring plate 420 is provided with an opening 425. The inner ring plate 420 has opposite two edges 426 at the opening 425. The liquid inlet part 430 is connected with one of the two edges 426. The liquid outlet part 440 is connected with the other of the two edges 426. The liquid inlet part 430 and the liquid outlet part 440 are arranged in a spaced manner.The inner ring plate 420 is provided with a plurality of bulges 421 bulging away from the outer ring plate 410; the bulges 421 extend along the circumferential direction of the inner ring plate 420; the cooling flow channel 401 is defined between the bulges 421 and the outer ring plate 410. The plurality of bulges 421 are arranged along a direction from the connecting portion 3112 to the main body portion 3111; the plurality of bulges 421 extend along the circumferential direction of the main body portion 3111. The inner ring plate 420 further comprises two end portions 424, and the plurality of bulges 421 are arranged between the two end portions 424; the two end portions 424 are sealingly connected with the outer ring plate 410, respectively. The inner ring plate 420 further comprises a partition portion 422, and the partition portion 422 is located between adjacent bulges 421; on a side facing the main body portion 3111, a groove 423 is defined between the adjacent bulges 421 and the partition portion 422. The connector 40 further comprises a heat conductor 500; the main body portion 3111 is provided with a first heat conduction surface 3111a, and the liquid cooling member 400 is provided with a second heat conduction surface 402; the heat conductor 500 is embedded between the first heat conduction surface 3111a and the second heat conduction surface 402.

[0119] The technical scheme of the embodiment has the following advantages: the liquid cooling member 400 and the connecting member 311 have a large contact area and good heat dissipation effect; in addition, the structure of the liquid cooling member 400 is simple, the connecting structure of the liquid cooling member 400 and the connector main body is simple, has high integration, is compact in structure, and occupies a small space.

[0120] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present 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 recorded in the foregoing embodiments, or make equivalent replacement for part 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 present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present 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 connector characterized by comprising: The application relates to a connector body, which comprises a connecting assembly and a liquid cooling element. The liquid cooling element is sleeved on the connecting assembly and is provided with a cooling flow channel, which is arranged in communication with a circulating heat exchange loop. The connecting assembly comprises at least two connecting pieces, each of which comprises a main body part and two wire connection parts arranged at opposite ends of the main body part. The liquid cooling element is sleeved on the main body part of the at least two connecting pieces.

2. The connector of claim 1, wherein The connector body comprises a shell, the connecting pieces are arranged in the shell, and at least part of the main body part protrudes out of the shell.

3. The connector of claim 2, wherein, The liquid cooling element comprises a liquid cooling plate, an inlet liquid part and an outlet liquid part arranged on the liquid cooling plate.

4. The connector of claim 3, wherein At least part of the inlet liquid part protrudes out of the liquid cooling plate in a direction away from the shell. The liquid cooling plate is provided with a plurality of sub-flow channels.

5. The connector of claim 4, wherein, The inlet liquid part is provided with an inlet liquid passage and an inlet liquid interface, the inlet ends of the plurality of sub-flow channels are in communication with the inlet liquid passage, and the inlet liquid interface is arranged in communication with the circulating heat exchange loop. The outlet liquid part is provided with an outlet liquid passage and an outlet liquid interface, the outlet ends of the plurality of sub-flow channels are in communication with the outlet liquid passage, and the outlet liquid interface is arranged in communication with the circulating heat exchange loop. The plurality of sub-flow channels are arranged in an axial direction of the main body part and extend in a circumferential direction of the main body part.

6. The connector of claim 5, wherein, The inlet liquid part is configured as an inlet liquid pipe, and the outlet liquid part is configured as an outlet liquid pipe.

7. The connector of claim 4, wherein The inlet liquid pipe is arranged on the inner side of the liquid cooling plate, and / or the outlet liquid pipe is arranged on the inner side of the liquid cooling plate. The liquid cooling plate comprises an outer ring plate and an inner ring plate arranged in the outer ring plate.

8. The connector of claim 4, wherein, The outer ring plate and the inner ring plate define the cooling flow channel. The inner ring plate is provided with an opening and has opposite edges at the opening.

9. The connector of claim 8, wherein, The inlet liquid part is connected to one of the edges, the outlet liquid part is connected to the other edge, and the inlet liquid part and the outlet liquid part are arranged in a spaced manner. The inner ring plate is provided with a protruding part protruding away from the outer ring plate, the protruding part extends in a circumferential direction of the inner ring plate, and the protruding part and the outer ring plate define the cooling flow channel.

10. The connector of claim 8, wherein, The number of the protruding parts is plural, and the plurality of protruding parts are arranged in a direction from the wire connection part to the main body part.

11. The connector of claim 10, wherein, The plurality of protruding parts extend in a circumferential direction of the main body part. The inner ring plate further comprises two end parts, and the plurality of protruding parts are arranged between the two end parts.

12. The connector of claim 10, wherein, The inner ring plate further comprises a separation part arranged between adjacent protruding parts.

13. The connector of claim 10, wherein, On a side facing the main body part, grooves are defined between the adjacent protruding parts and the separation part.

14. The connector of any one of claims 2 to 13, wherein, The connector further comprises a heat conductor; the main body part is provided with a first heat conducting surface, the liquid cooling part is provided with a second heat conducting surface, and the heat conductor is embedded between the first heat conducting surface and the second heat conducting surface.

15. The connector of any one of claims 3 to 13, wherein, The shell has a shell main part and a flange part arranged in sequence along a first direction; The connecting part is arranged in the shell along the first direction, one of the wiring parts is located in the shell main part, and at least part of the main body part and the other wiring part protrude from the flange part; The liquid cooling part is located on a side of the flange part away from the shell main part.

16. A battery device characterized by comprising: Comprise: A device main body comprising a box body and a battery cell arranged in the box body; And The connector body of the connector according to any one of claims 1 to 15 is arranged in the box body, and the connecting assembly is connected with the battery cell.

17. The battery device of claim 16, wherein, The device main body is further provided with a heat exchange channel for heat exchange with the battery cell, the heat exchange channel constitutes at least part of the circulating heat exchange loop, and the cooling flow channel communicates with the heat exchange channel.

18. An electrical device, comprising: Comprise the battery device according to claim 16 or 17, the battery device is used for providing electric energy.

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