Connector, device, energy storage device, system, power utilization device and charging network

Abstract

The utility model provides a connector, a battery device, an energy storage device, an energy storage system, a power utilization device and a charging network. The connector comprises a connecting female end and a connecting male end; the connecting female end comprises a ring spring and a female end support for supporting the ring spring, and the ring spring surrounds to form an insertion hole; the male end terminal is connected with the male end and used for being inserted into the insertion hole in a matched mode to be elastically connected with the ring spring, and the male end support is used for supporting the male end terminal. The ring spring is arranged in the female end support, and the ring spring is surrounded to form the jack, so that the male end terminal connected with the male end can be plugged and connected, and the connection is convenient; the ring spring is used, the structure is simple, the axial length is small, and the length of the male end terminal can be set to be small correspondingly, so that the occupied space of the connector is reduced, the use of materials is reduced, and the material cost is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and more particularly relates to a connector, a battery device, an energy storage device, an energy storage system, a power consumption device and a charging network. BACKGROUND

[0002] Connectors are often used in electrical connections. Current large-current connectors mostly use crown springs to connect male terminals. However, the crown springs are relatively long, and the corresponding male terminals are also relatively long, which occupies a large space and has a high material cost. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a connector, a battery device, an energy storage device, an energy storage system, a power consumption device and a charging network to solve the problem of long crown springs and male terminals of the connector in the prior art, large occupied space and high material cost.

[0004] In a first aspect, the application provides a connector, comprising:

[0005] The female end is connected to the male end and comprises a ring spring and a female end support supporting the ring spring, the ring spring being arranged around to form a socket;

[0006] The male end is connected to the female end and comprises a male end terminal adapted to be inserted into the socket to be elastically connected to the ring spring and a male end support supporting the male end terminal.

[0007] In the technical solution of the application, the ring spring is arranged in the female end support and is arranged around to form a socket, so that the male end terminal of the male end is connected by insertion, which is convenient to connect and can provide axial redundancy to realize axial floating. The use of the ring spring has a simple structure and a small axial length, and the length of the male end terminal can also be set to be small accordingly, thereby reducing the occupied space of the connector, reducing the use of materials and reducing the material cost.

[0008] In some embodiments, the ring spring is polygonal along the axial direction of the ring spring.

[0009] The ring spring is arranged to be polygonal, and when the male end terminal is inserted into the socket of the ring spring, the side edges of the polygonal ring spring can elastically abut against the male end terminal to be well connected to the male end terminal.

[0010] In some embodiments, the ring spring is hexagonal along the axial direction of the ring spring.

[0011] The ring spring is arranged to be hexagonal, which can well abut against the male end terminal and make the male end terminal on the side be more balanced under the action of the ring spring, so as to be stably connected to conduct large current.

[0012] In some embodiments, at least part of at least one side edge of the ring spring is arranged to be bent towards the inside of the socket.

[0013] Bending at least part of at least one side edge of the ring spring inwardly can reduce the area of the insertion hole, so that the side edge of the ring spring can better resist the connection of the male terminal, thereby improving the stability of the connection.

[0014] In some embodiments, at least part of at least one side edge of the ring spring is bent towards the outside of the insertion hole.

[0015] Bending at least part of at least one side edge of the ring spring outwardly can make the side edge better fit the male terminal, increase the contact area with the male terminal, so as to conduct large current.

[0016] In some embodiments, the ring spring comprises at least one coil of conductive wire wound into a ring shape, and the conductive wire surrounds the insertion hole.

[0017] Winding the conductive wire into a ring shape to form the ring spring has simple structure, convenient manufacturing and low cost.

[0018] In some embodiments, the conductive wire is wound in multiple turns in an axial spiral around the insertion hole.

[0019] Winding the conductive wire in multiple turns can increase the structural strength of the manufactured ring spring, so as to more stably connect the male terminal and increase the contact area with the male terminal, thereby better conducting large current.

[0020] In some embodiments, the female support comprises an outer sleeve, and the ring spring is arranged in the outer sleeve.

[0021] The female support uses an outer sleeve, which has simple structure and can conveniently support the ring spring.

[0022] In some embodiments, the female support further comprises a connecting plate arranged around the outer sleeve, and the connecting plate is connected to the outer sleeve.

[0023] The connecting plate is arranged to facilitate the installation and fixation of the female support on the supporting medium, thereby fixing the connection female and facilitating assembly and use.

[0024] In some embodiments, the connection female further comprises an elastic member elastically resisting the circumferential side of the ring spring along the radial direction of the insertion hole, and the elastic member is connected to the female support.

[0025] The elastic member is arranged to support the circumferential side of the ring spring, and can provide the ring spring with a radial offset allowance through the elastic member, so as to realize radial floating to facilitate the plug-in connection of the male terminal.

[0026] In some embodiments, the male terminal comprises a plug-in terminal for plug-in connection with the insertion hole, and the plug-in terminal is movably installed on the male support along the radial direction of the insertion hole.

[0027] The male terminal uses a plug-in terminal to be plugged into the socket of the ring spring. The plug-in terminal is radially installed on the male terminal holder along the socket, so that the plug-in terminal can radially float to reduce the influence of assembly errors and facilitate plugging into the socket of the ring spring.

[0028] In some embodiments, the male terminal includes a fixed terminal for connecting an external circuit, the fixed terminal being electrically connected to the plug-in terminal, and the fixed terminal being fixedly connected to the male terminal holder.

[0029] The fixed terminal is arranged to be electrically connected to the plug-in terminal, which facilitates the connection of the external circuit and the support of the male terminal, and facilitates installation and use.

[0030] In some embodiments, the male terminal holder has an inner hole, the plug-in terminal has opposite first and second ends, the first end is used to be plugged into the socket of the ring spring, the second end has a protrusion extending outward from the circumferential side, the protrusion extends into the inner hole, one end of the inner hole extends inward to form a limiting portion, the limiting portion abuts against the protrusion, a gap is formed between the circumferential side of the plug-in terminal and the limiting portion, and the fixed terminal is connected to the other end of the inner hole.

[0031] The inner hole is arranged in the male terminal holder to connect the fixed terminal and accommodate the second end and the protrusion of the plug-in terminal, and the limiting portion is arranged on the male terminal holder to prevent the plug-in terminal from falling off. The gap between the circumferential side of the plug-in terminal and the limiting portion allows the plug-in terminal to radially float in the inner hole.

[0032] In some embodiments, the second end is supported on the fixed terminal, the end face of the second end is a flat surface, and the fixed terminal has a flat surface that abuts against the end face of the second end.

[0033] The end face of the second end and the corresponding end face of the fixed terminal are both flat surfaces, so that the fixed terminal supports the second end, the plug-in terminal is electrically connected to the fixed terminal, the conduction of large current is facilitated, and the plug-in terminal slides on the fixed terminal to achieve radial floating of the plug-in terminal.

[0034] In some embodiments, the male terminal further includes an elastic member that abuts against the end face of the second end, and the elastic member is connected to the fixed terminal.

[0035] The elastic member is arranged to abut against the end face of the second end, which reduces the contact pressure between the end face of the second end and the fixed terminal, and further reduces the friction between the second end and the fixed terminal, facilitating the radial movement of the plug-in terminal relative to the fixed terminal.

[0036] In some embodiments, the fixed terminal has a positioning groove on the end face close to the plug-in terminal, and the elastic member is arranged in the positioning groove.

[0037] The positioning groove is arranged to facilitate the installation of the elastic member and facilitate the abutment of the elastic member against the end face of the second end of the plug-in terminal.

[0038] In some embodiments, the positioning groove is annular, and the elastic member is a spring bent into an annular shape.

[0039] The spring is bent into an annular shape to form the elastic member, which is simple to manufacture and can elastically abut against the end face of the second end of the plug-in terminal and electrically connect the fixed terminal and the plug-in terminal, thereby improving the stability of the electrical connection between the fixed terminal and the plug-in terminal.

[0040] In some embodiments, the fixed terminal comprises a support section and a connecting section, the connecting section is connected to the support section, the support section is used to support the plug-in terminal, and the support section is fixed to the other end of the inner hole; the connecting section extends out of the inner hole to connect external circuits.

[0041] The fixed terminal is provided with the support section to be installed in the inner hole of the male terminal holder and to facilitate the support of the plug-in terminal, and is provided with the connecting section to connect external circuits, thereby facilitating the installation and use.

[0042] In some embodiments, the outer diameter of the support section is greater than the outer diameter of the connecting section.

[0043] The outer diameter of the support section is set to be relatively large to support the plug-in terminal and increase the contact area with the plug-in terminal, thereby reducing the internal resistance of the male terminal and facilitating the conduction of large current; and the outer diameter of the connecting section is set to be relatively small to connect external circuits.

[0044] In some embodiments, the fixed terminal is provided with external threads.

[0045] The fixed terminal is provided with external threads to connect external circuits, thereby facilitating the installation and use.

[0046] In some embodiments, the male terminal holder has a polygonal cross section perpendicular to the axial direction of the male terminal.

[0047] The cross section of the male terminal holder is set to be polygonal to facilitate the rotation of the male terminal holder using a tool, thereby facilitating the installation and connection of the male terminal.

[0048] In a second aspect, the embodiments of the present application provide a battery device comprising the connector as described in the above embodiments.

[0049] In a third aspect, the embodiments of the present application provide an energy storage device comprising the connector as described in the above embodiments or the battery device as described in the above embodiments, and the battery device is used to store or provide electric energy.

[0050] In a fourth aspect, the embodiments of the present application provide an energy storage system comprising a power conversion device and the energy storage device as described in the above embodiments, and the power conversion device is electrically connected between a power generation device and the energy storage device.

[0051] In a fifth aspect, the embodiments of the present application provide a power utilization device, which comprises the connector as described in the above embodiments, the battery device as described in the above embodiments, the energy storage device as described in the above embodiments, or the energy storage system as described in the above embodiments, and the battery device is used to store or provide electric energy.

[0052] In a sixth aspect, the embodiments of the present application provide a charging network, which comprises the charging pile and the energy storage device as described in the above embodiments or the energy storage system as described in the above embodiments, and the energy storage device is used to provide electric energy for the charging pile.

[0053] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clear, the embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or exemplary technical descriptions. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0055] Figure 1 Structure diagram of a vehicle of some embodiments of the present application;

[0056] Figure 2 Structure diagram of a charging network of some embodiments of the present application;

[0057] Figure 3 Structure diagram of an energy storage system of some embodiments of the present application;

[0058] Figure 4 Structure diagram of an energy storage device of some embodiments of the present application;

[0059] Figure 5 Exploded structure diagram of a battery device of some embodiments of the present application;

[0060] Figure 6 Front view structure diagram of a connector of some embodiments of the present application;

[0061] Figure 7 Structure diagram of a connector in which the male end and the female end are separated; Figure 6

[0062] Structure diagram of a connector along the section A-A; Figure 8 Figure 6 ​​

[0063] Figure 9 Exploded view of the connector of some embodiments of the application Figure 1 ;

[0064] Figure 10 Exploded view of the connector of some embodiments of the application Figure 2 ;

[0065] Figure 11 Top view of the ring spring of some embodiments of the application

[0066] Figure 12 Top view of the ring spring of some embodiments of the application

[0067] Figure 13 Top view of the ring spring of some embodiments of the application

[0068] Figure 14 Top view of the ring spring of some embodiments of the application

[0069] Figure 15 Sectional view of the female connector of some embodiments of the application

[0070] In the drawings, the main reference signs refer to the following:

[0071] 11. Vehicle; 111. Controller; 112. Motor;

[0072] 12. Charging network; 121. Charging pile; 122. Connection device;

[0073] 13. Energy storage system; 131. Power conversion device; 132. Power generation device; 14. Energy storage device; 141. Cabinet;

[0074] 200. Battery device; 20. Box body; 21. Top cover; 22. Bottom plate; 23. Frame; 24. Reinforcing beam; 241. Hanging beam; 242. Expansion beam;

[0075] 300. Battery monomer;

[0076] 400. Connector;

[0077] 40. Female connector; 41. Female connector support; 411. Outer sleeve; 412. Connection plate; 42. Ring spring; 420. Socket; 421. Conductive wire; 422. Ring spring; 43. Elastic member;

[0078] 50, male connector; 51, male connector seat; 510, inner hole; 511, limiting part; 52, male terminal; 521, plug-in terminal; 5211, first end; 5212, second end; 5213, protruding part; 522, fixed terminal; 5220, positioning groove; 5221, support section; 5222, connecting section; 53, elastic member;

[0079] X, axial direction; Y, radial direction. DETAILED DESCRIPTION

[0080] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0081] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the present specification and claims and the aforementioned description of the drawings, the terms "comprising" and "having" and any variations thereof are intended to cover not exclusively inclusive.

[0082] In the description of the embodiments of the present application, the technical terms "first", "second", etc. 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. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0083] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined in any suitable manner with other embodiments.

[0084] If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions.

[0085] If not specifically stated, all technical features and optional technical features of the present application can be combined to form new technical solutions.

[0086] In the description of the embodiments of the present application, the term "and / or" is merely an 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 alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the associated objects before and after it.

[0087] 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). The meaning of "several" is one or more, unless otherwise explicitly specified.

[0088] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "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 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.

[0089] 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 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.

[0090] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0091] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "adjacent" refers to being close in position. For example, there are three components A1, A2 and B, the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is adjacent to B, and it can also be said that B is adjacent to A2. For another example, when there are multiple C components, the multiple C components are C1, C2, …, Cn respectively, and the distance between B and C1 is greater than the distance between B and C2, …, Cn, then B is adjacent to C2, and it can also be said that C2 is adjacent to B. N

[0092] Connectors are often used in battery devices, vehicles, power storage cabinets and other electrical equipment to electrically connect two circuits or devices. Currently, connectors that pass large currents generally have a crown spring arranged at the female end to connect with the terminal of the male end. However, the spring sheet of the crown spring extends in the axial direction, which also makes the length of the crown spring larger. The terminal of the male end needs to be inserted into the crown spring to resist the spring sheet of the crown spring. This makes the length of the crown spring and the male terminal longer, occupies more space, and has a higher material cost.

[0093] Based on the above considerations, in order to improve the problem of the longer length of the crown spring and the male terminal of the connector in the related art, the larger space occupied, and the higher material cost, an embodiment of the present application provides a connector. The female end uses a ring spring around the insertion hole to connect with the male terminal of the male end, thereby realizing electrical connection and large current conduction. Moreover, since the ring spring surrounds the insertion hole, the insertion hole formed is a through hole structure, which can provide axial redundancy and realize axial floating. In addition, since the ring spring is used, the structure is simple, the axial length is smaller, and accordingly the length of the male terminal can also be set smaller, thereby reducing the space occupied by the connector, reducing the use of materials, and reducing the material cost.

[0094] In an embodiment of the present application, the battery monomer can be a secondary battery, which refers to a battery monomer that can be activated by charging after discharging to continue to be used.

[0095] The battery monomer 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 present application is not limited thereto.

[0096] The technical solutions described in the embodiments of the present application are applicable to various electric devices that need to be electrically connected, for example, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, etc.

[0097] For convenience of description, an electric device is provided in an embodiment of the present application, which is taken as an example of a vehicle for description.​

[0098] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 11 is provided for some embodiments of the present application. The vehicle 11 can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car, etc. The vehicle 11 is internally provided with a battery device 200, which can be arranged at the bottom, head or tail of the vehicle 11. The battery device 200 can be used for power supply of the vehicle 11, for example, the battery device 200 can be used as the operating power supply of the vehicle 11. The vehicle 11 can also include a controller 111 and a motor 112, and the controller 111 is used to control the battery device 200 to supply power to the motor 112, for example, for the working power demand of the vehicle 11 during starting, navigation and driving.

[0099] In some embodiments, the battery device 200 can not only be used as the operating power supply of the vehicle 11, but also be used as the driving power supply of the vehicle 11, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 11.

[0100] Please refer to Figure 2 The embodiments of the present application provide a charging network 12, which includes a charging pile 121 and an energy storage device 14, the charging pile 121 is electrically connected with the energy storage device 14, and the energy storage device 14 is used to provide electric energy for the charging pile 121. The charging pile 121 and the battery device 200 in the energy storage device 14 are electrically connected through a cable, and the battery device 200 can provide the electric energy stored by itself to the charging pile 121. The charging pile 121 has one or more connecting devices 122, which are used to connect with the electric equipment (such as the vehicle 11), so as to supply energy to the electric equipment.

[0101] The energy storage device 14 can be located inside the charging pile 121 (such as a charging and storage integrated machine), or outside the charging pile 121.

[0102] In some embodiments, the charging network 12 can include a charging pile 121 and an energy storage system, the charging pile 121 is electrically connected with the energy storage system, and the energy storage system is used to provide electric energy for the charging pile 121. The charging pile 121 and the battery device 200 in the energy storage system are electrically connected through a cable, and the battery device 200 can provide the electric energy stored by itself to the charging pile 121.

[0103] Please refer to Figure 3The embodiments of the present application provide a power storage system 13, which can include one or more power storage devices 14 and a power converter system 131 (PCS). The power converter system 131 is connected between a power generation device 132 and the power storage device 14. The power generation device 132 is configured to generate electric power. The electric power generated by the power generation device 132 can be stored in the power storage device 14 through the power converter system 131. As an example, the power generation device 132 can be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. The specific type of the power generation device 132 is not limited in the present application.

[0104] Please refer to Figure 4 The embodiments of the present application provide a power storage device 14, which includes one or more battery clusters to improve the voltage and capacity of the power storage device 14. The battery cluster can include one or more battery devices 200. The plurality of battery devices 200 are connected in series through a busbar component to improve the voltage of the power storage device 14. When the power storage device 14 includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the power storage device 14.

[0105] The power storage device 14 can be used in a power storage power station, a wind power generation system, a solar power generation system, a mobile power system, or a temporary power supply system, etc. The power storage device 14 can store electric power as needed and output the electric power at an appropriate time. For example, the power storage device 14 can store electric power during a low electricity consumption period and provide electric power for related users or electric equipment during a high electricity consumption period. The power storage system 13 provided by the embodiments of the present application can be any power system that needs to use the power storage device 14.

[0106] In some embodiments, the power storage device 14 is a power storage cabinet. Of course, the power storage device 14 can also be a power storage container.

[0107] In some embodiments, the power storage device 14 can include a cabinet body 141 and one or more battery clusters, which are accommodated in the cabinet body 141. Of course, the power storage device 14 can also include one or more battery devices 200, which are directly accommodated in the cabinet body 141.

[0108] In some embodiments, the power storage device 14 can include a thermal management module, a master control module, a general control module, a power distribution module, a fire control module, etc.

[0109] As an example, the thermal management module can include a liquid cooling unit, which provides a cooling liquid for adjusting the temperature of a battery cell through a pipeline to each battery device 200.

[0110] As an example, the master module can be a battery management unit of the battery cluster, for monitoring and managing the battery cluster. The master module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master module includes a slave battery management unit (SBMU), a fuse module, etc.

[0111] As an example, the master module can be a battery management unit of the battery cluster, for monitoring and managing the battery cluster. The master module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, etc. of the battery cluster can be controlled. The master module includes a slave battery management unit (SBMU), a fuse module, etc.

[0112] As an example, the fire control module includes a control panel, a detector, an alarm device, etc., for detecting, alarming, or extinguishing the energy storage system 13.

[0113] As an example, the power distribution module can be used to distribute power to the modules in the energy storage device 14 that need power.

[0114] Please refer to Figure 5 The embodiments of the present application provide a battery apparatus 200. The battery apparatus 200 can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 300 connected in series, in parallel, or in a hybrid connection through a busbar component.

[0115] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 300.

[0116] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells 300 into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 300 with a cable tie.

[0117] In some embodiments, the battery device 200 can be a battery pack, which includes a case 20 and one or more battery cell assemblies housed in the case 20.

[0118] As an example, the battery cell assembly can be a battery module, which can be housed in the case 20 by fixing the battery module in the case 20.

[0119] As an example, the battery cell assembly can also be housed in the case 20 by fixing a plurality of battery cells 300 directly to the case 20.

[0120] In some embodiments, the case 20 can include a top cover 21, a frame 23, and a bottom plate 22. The top cover 21 and the bottom plate 22 are respectively connected to opposite sides of the frame 23, so that an enclosed space is formed inside the case 20 to accommodate the battery cells 300. The frame 23 refers to a part of the structure that forms the peripheral side wall of the case 20, the top cover 21 refers to a plate-shaped structure that forms the top of the case 20, and the bottom plate 22 refers to a plate-shaped structure that forms the bottom of the case 20.

[0121] In some embodiments, the case 20 can include a first case and a second case, which are buckled so that an enclosed space is formed inside the case 20 to accommodate the battery cells 300. Here, enclosed means covered or closed, which can be sealed or unsealed. The first case can be the top cover or the bottom plate of the case 20. The first case and the second case can also be hollow structures with one open side each, and the open side of the first case is buckled to the open side of the second case.

[0122] In some embodiments, the case 20 includes a reinforcing beam 24 connected to the frame 23. The reinforcing beam 24 refers to a structural member provided on the case 20 to increase the structural strength of the case 20. The reinforcing beam 24 is provided and connected to the frame 23 to increase the structural strength of the case 20.

[0123] In some embodiments, the reinforcing beam 24 includes a mounting beam 241 fixedly connected to the frame 23, which is used to connect to an external device using the battery device 200 to support the battery device 200 on the device.

[0124] In some embodiments, the reinforcing beam 24 includes an expansion beam 242 mounted inside the case 20 to increase the structural strength of the case 20, and can also be used to resist the battery cells 300 to limit the expansion deformation of the battery cells 300.

[0125] In some embodiments, the expansion beam 242 can also be connected to the bottom plate 22 of the case 20 to better fix the expansion beam 242 in the case 20.

[0126] In some embodiments, the box 20 can be part of a chassis structure of a vehicle. For example, portions of the box 20 can be part of a floor of the vehicle, or portions of the box 20 can be part of cross members and longitudinal members of the vehicle.

[0127] Referring to Figures 6 to 15 According to some embodiments of the present application, a connector 400 is provided, which includes a female end 40 and a male end 50. The female end 40 includes a ring spring 42 and a female end support 41 supporting the ring spring 42, the ring spring 42 being formed around a socket 420; the male end 50 is adapted to fit a male end terminal 52 inserted into the socket 420 to elastically connect with the ring spring 42 and a male end support 51 supporting the male end terminal 52.

[0128] The female end 40 refers to a female end structure of the connector 400 having a hole structure.

[0129] The male end 50 refers to a male end structure of the connector 400 having a plug. The plug of the male end 50 is inserted into the hole structure of the female end 40 to achieve plug-in connection of the male end 50 with the female end 40.

[0130] The ring spring 42 refers to an elastic structure formed in a ring or frame shape. The ring spring 42 is generally made of metal, such as a metal wire, a metal spring, etc.

[0131] The socket 420 refers to a through hole structure formed inside the ring spring 42. The ring spring 42 being formed around the socket 420 means that the ring spring 42 is bent using a metal material to be wound to form a structure having a through hole inside, and the through hole is the socket 420 of the ring spring 42.

[0132] The female end support 41 refers to a seat structure for supporting the ring spring 42. The female end support 41 can be made of an insulating material such as plastic, ceramic, etc. to support the ring spring 42. Of course, the female end support 41 can also be made of a metal material to be electrically connected with the ring spring 42, so that in the case of connecting the female end support 41 with an external circuit, the ring spring 42 can be connected with the external circuit to facilitate electrical connection of the ring spring 42 with the external circuit. Of course, the ring spring 42 can also be electrically connected with the external circuit in other ways, such as using a wire or a conductive sheet to electrically connect the ring spring 42 with the external circuit.

[0133] The male terminal 52 refers to a conductive structure that constitutes a plug connected to the male end 50 to be inserted into the socket 420. The male terminal 52 can be made of a metal material such as copper, aluminum, or the like. Of course, the male terminal 52 can also be made of a conductive plastic material or the like. The male terminal 52 can be a columnar member or an axial member with a circular, polygonal, or the like cross section. The male terminal 52 is inserted into the socket 420, and the ring spring 42 elastically abuts against the male terminal 52 to be electrically connected to the male terminal 52. The male terminal 52 can also be an axial structure formed by surrounding a plurality of sheet members or rod members so as to be elastically abutted against the female terminal when inserted into the female terminal to be electrically connected to the female terminal.

[0134] The male terminal support 51 refers to a seat structure for supporting the male terminal 52. The male terminal support 51 can be made of an insulating material such as plastic, ceramic, or the like to support the male terminal 52. Of course, the male terminal support 51 can also be made of a metal material to be electrically connected to the male terminal 52 so that the male terminal 52 can be connected to an external circuit when the male terminal support 51 is connected to the external circuit, thereby facilitating the electrical connection between the male terminal 52 and the external circuit. Of course, the male terminal 52 can also be electrically connected to the external circuit in other ways, such as being electrically connected to the external circuit by a wire or a conductive sheet or being directly electrically connected to the external circuit.

[0135] The female end 40 uses the ring spring 42 to surround the socket 420 to be inserted into the male terminal 52 without using a crown spring, so that the axial X length of the socket 420 can be made smaller to reduce the occupied space and material, and accordingly, the length of the male terminal 52 can also be shortened accordingly to reduce the use of materials and lower the material cost.

[0136] Since the male terminal 52 and the socket 420 of the ring spring 42 are inserted and fitted, the axial X of the socket 420 is also the axial direction of the ring spring 42, and accordingly, when the male terminal 52 is an axial member, the axial X of the socket 420 is also the axial direction of the male terminal 52; when the male terminal 52 is a columnar member, the axial X of the socket 420 is also the length direction of the male terminal 52, so that the length direction of the male terminal 52 is also referred to as the axial X. Since the axial X of the socket 420, the axial direction of the ring spring 42, and the axial direction of the male terminal 52 are consistent, in the embodiments of the present application, the axial X directly described can be considered as the axial X of the socket 420, or the axial direction of the ring spring 42, or the axial direction of the male terminal 52. The radial Y refers to a direction perpendicular to the axial X, and thus the radial Y can be considered as any direction perpendicular to the axial X in the 360-degree direction around the axial X.

[0137] The radial Y floating refers to the movement of an object in any direction perpendicular to the axial X.

[0138] Axial X floating means that the object can move along the axial X.

[0139] Since the insertion hole 420 surrounded by the ring spring 42 is a through hole structure, the length of the male terminal 52 can be appropriately increased in the case where the ring spring 42 can resist the male terminal 52, thereby adapting to a larger length of the male terminal 52, that is, providing axial X floating redundancy, and reducing the precision requirement of the axial X length of the male terminal 52.

[0140] The axial X is the axial X of the insertion hole 420, and is also the length direction of the male terminal 52.

[0141] In the technical scheme of the embodiment of the application, the ring spring 42 is arranged in the female end support 41, and the ring spring 42 is arranged to surround the insertion hole 420, so as to be connected by inserting the male terminal 52 of the male end 50, which is convenient to connect, and can provide axial X redundancy to realize axial X floating. The ring spring 42 is used, which has a simple structure and a small axial X length, and the length of the male terminal 52 can also be set to be small accordingly, thereby reducing the space occupied by the connector 400, reducing the use of materials, and reducing the cost of materials.

[0142] In some embodiments, the connector 400 can be applied to the positive electrode end of the battery device 200 to conduct current. In some embodiments, the connector 400 can be applied to the negative electrode end of the battery device 200 to conduct current.

[0143] In some embodiments, referring to Figures 7 to 13 , along the axial X of the ring spring 42, the ring spring 42 is arranged in a polygonal shape.

[0144] The axial X of the ring spring 42 is also the axial X of the insertion hole 420.

[0145] Along the axial X of the ring spring 42, the ring spring 42 is arranged in a polygonal shape means that from the axial X of the ring spring 42, the ring spring 42 is in a polygonal shape. As an example, the polygonal shape can be a regular polygon, that is, the lengths of the sides of the polygon are set to be equal or similar, so as to facilitate processing and manufacturing, and when the male terminal 52 is inserted into the insertion hole 420 of the ring spring 42, the forces of the male terminal 52 received by the sides of the ring spring 42 are similar, so that the male terminal 52 is balanced. As an example, the lengths of the sides of the polygon can also be set to be different.

[0146] The ring spring 42 is arranged in a polygonal shape, and when the male terminal 52 is inserted into the insertion hole 420 of the ring spring 42, the sides of the polygonal ring spring 42 elastically resist the male terminal 52, so as to be well connected with the male terminal 52.

[0147] In some embodiments, referring to Figure 7 and Figure 14 , along the axial X of the ring spring 42, the ring spring 42 is arranged in a circular shape, an elliptical shape, etc.

[0148] In some embodiments, referring to Figures 7 to 13 The ring spring 42 is hexagonal along the axial direction X of the ring spring 42.

[0149] The ring spring 42 is hexagonal along the axial direction X of the ring spring 42 means that the ring spring 42 is hexagonal as viewed along the axial direction X of the ring spring 42.

[0150] Setting the ring spring 42 to be hexagonal can make the ring spring 42 have six side walls to hold the male terminal 52, achieve good contact with the male terminal 52, so as to achieve large current conduction, and the force of each side wall holding the male terminal 52 can well hold the connection of the male terminal 50, so as to be stable and connected, and the male terminal 52 can be well protected and the male terminal 52 is more balanced in the action of the ring spring 42, so as to be stable and connected for large current conduction.

[0151] As an example, the ring spring 42 is pentagonal, heptagonal, octagonal, etc. along the axial direction X of the ring spring 42.

[0152] In some embodiments, referring to Figure 7 and Figure 12 At least part of at least one side of the ring spring 42 is bent towards the inside of the insertion hole 420.

[0153] At least part of at least one side of the ring spring 42 is bent towards the inside of the insertion hole 420 means that among the side walls of the ring spring 42 forming the insertion hole 420, part of one side wall can be bent towards the inside of the insertion hole 420, the whole of one side wall can be bent towards the inside of the insertion hole 420, part of several side walls can be bent towards the inside of the insertion hole 420, the whole of several side walls can be bent towards the inside of the insertion hole 420, part of each side wall can be bent towards the inside of the insertion hole 420, the whole of each side wall can be bent towards the inside of the insertion hole 420, part of some side walls can be bent towards the inside of the insertion hole 420, and the whole of some side walls can be bent towards the inside of the insertion hole 420.

[0154] Since the side wall of the insertion hole 420 is bent towards the inside of the insertion hole 420, the area of the insertion hole 420 is actually reduced, and when the male terminal 52 is inserted into the insertion hole 420, the force of the inwardly bent side wall holding the male terminal 52 can be increased to more stably connect the male terminal 50.

[0155] Bending at least part of at least one side of the ring spring 42 inwardly can reduce the area of the insertion hole 420, so that the side of the ring spring 42 can better hold the connection of the male terminal 50 and improve the stability of the connection.

[0156] In some embodiments, at least part of each side of the ring spring 42 is bent towards the inside of the insertion hole 420, that is, at least part of each side wall of the insertion hole 420 is bent towards the inside of the insertion hole 420. When the male terminal 52 is inserted into the insertion hole 420, each side wall can be more stably supported against the male terminal 52, and the male terminal 52 can be more evenly stressed on each side, so that the connection is more stable.

[0157] In some embodiments, referring to Figure 7 and Figure 13 , at least part of at least one side of the ring spring 42 is bent towards the outside of the insertion hole 420.

[0158] At least part of at least one side of the ring spring 42 being bent towards the outside of the insertion hole 420 means that the ring spring 42 forms a side wall of the insertion hole 420, which can be a part of one side wall bent towards the outside of the insertion hole 420, which can be the whole of one side wall bent towards the outside of the insertion hole 420, which can be a part of several side walls bent towards the outside of the insertion hole 420, which can be the whole of several side walls bent towards the outside of the insertion hole 420, which can be a part of each side wall bent towards the outside of the insertion hole 420, which can be the whole of each side wall bent towards the outside of the insertion hole 420, or which can be a part of some side walls bent towards the outside of the insertion hole 420 and the whole of some side walls bent towards the outside of the insertion hole 420.

[0159] Because the side wall of the insertion hole 420 is bent towards the outside of the insertion hole 420, when the male terminal 52 is inserted into the insertion hole 420, the outwardly bent side wall can better adapt to the shape of the male terminal 52 to increase the contact area with the male terminal 52.

[0160] Bending at least part of at least one side of the ring spring 42 outwardly can make the side better adapt to the male terminal 52 to increase the contact area with the male terminal 52 for large-current conduction.

[0161] In some embodiments, at least part of each side of the ring spring 42 is bent towards the outside of the insertion hole 420, that is, at least part of each side wall of the insertion hole 420 is bent towards the outside of the insertion hole 420. When the male terminal 52 is inserted into the insertion hole 420, each side wall can be more stably supported against the male terminal 52, and the male terminal 52 can be more evenly stressed on each side, so that the connection is more stable.

[0162] In some embodiments, referring to Figures 7 to 10 , the ring spring 42 comprises at least one ring of conductive wire 421 wound into a ring shape, and the conductive wire 421 surrounds the insertion hole 420.

[0163] The conductive wire 421 refers to a wire-shaped structure made of a conductive material. The conductive material can be a metal material such as copper, steel, aluminum, or a conductive plastic material.

[0164] The ring spring 42 comprises at least one loop of the conductive wire 421 wound into a ring shape. The conductive wire 421 is wound into a ring shape to form the ring spring 42.

[0165] Since the socket 420 is formed around the ring spring 42, and the conductive wire 421 is wound into a ring shape to form the ring spring 42, the socket 420 is formed inside the ring-shaped structure of the conductive wire 421.

[0166] Winding the conductive wire 421 into a ring shape to form the ring spring 42 is simple in structure, easy to manufacture, and low in cost.

[0167] In some embodiments, referring to Figure 14 , the ring spring 42 can also be formed by spring bending, that is, the ring spring 42 is a ring-shaped spring 422, which is convenient to manufacture.

[0168] In some embodiments, referring to Figures 7 to 10 , the conductive wire 421 is spirally wound around the socket 420 in the axial direction X for multiple turns.

[0169] Multiple turns refer to two turns or more.

[0170] The conductive wire 421 is spirally wound around the socket 420 in the axial direction X for multiple turns, which forms a multi-turn structure of the conductive wire 421, and is spirally wound around the socket 420 in the axial direction X.

[0171] Winding the conductive wire 421 for multiple turns can increase the structural strength of the manufactured ring spring 42, more stably connect the male terminal 50, and increase the contact area with the male terminal 52, better conducting large current.

[0172] In some embodiments, referring to Figures 6 to 10 , the female support 41 comprises an outer sleeve 411, and the ring spring 42 is placed in the outer sleeve 411.

[0173] The outer sleeve 411 refers to a sleeve structure with a through hole inside. The cross section of the outer sleeve 411 can be circular, polygonal, etc. The outer sleeve 411 can be made of a conductive material such as metal. Of course, the outer sleeve 411 can also be made of an insulating material such as plastic or ceramic.

[0174] The ring spring 42 is placed in the outer sleeve 411, which means that the ring spring 42 is installed in the internal through hole of the outer sleeve 411. The ring spring 42 can be directly fixed in the outer sleeve 411, that is, the outer sleeve 411 directly fixes and supports the ring spring 42. Of course, the ring spring 42 can also be supported in the outer sleeve 411 using other structures such as a support plate, a support bracket, etc.

[0175] The female end support 41 uses the outer sleeve 411, which is simple in structure and can conveniently support the ring spring 42.

[0176] In some embodiments, the female end support 41 can also be provided in the shape of a ring-shaped plate, a frame, a block, or the like, to support the ring spring 42.

[0177] In some embodiments, referring to Figures 6 to 10 , the female end support 41 further includes a connecting plate 412 provided around the outer sleeve 411, and the connecting plate 412 is connected to the outer sleeve 411.

[0178] The connecting plate 412 refers to a plate-shaped structural member provided around the outer sleeve 411. The connecting plate 412 is connected to the outer sleeve 411, which not only enhances the structural strength of the female end support 41, but also facilitates installation and use.

[0179] The connecting plate 412 is provided so as to facilitate the installation and fixation of the female end support 41 when it is installed on a supporting medium, thereby facilitating the fixation of the female end 40 and facilitating assembly and use.

[0180] In some embodiments, the outer sleeve 411 and the connecting plate 412 can be integrally formed so as to be well fixed to each other after processing and manufacturing.

[0181] In some embodiments, the outer sleeve 411 and the connecting plate 412 can be separately manufactured and then fixedly connected through welding, bonding, or the like.

[0182] In some embodiments, referring to Figure 15 , the female end 40 further includes an elastic member 43 elastically abutting the circumferential side of the ring spring 42 in the radial direction Y of the insertion hole 420, and the elastic member 43 is connected to the female end support 41.

[0183] The elastic member 43 refers to a structural member that has elasticity and elastically supports the ring spring 42 in the radial direction Y of the ring spring 42. The elastic member 43 elastically abuts the circumferential side of the ring spring 42 in the radial direction Y of the insertion hole 420, which not only well supports the ring spring 42, but also allows the ring spring 42 to move in the radial direction Y of the female end support 41 due to the elasticity of the elastic member 43.

[0184] The elastic member 43 is connected to the female end support 41 so as to be supported by the female end support 41, thereby supporting the ring spring 42.

[0185] The elastic member 43 can be made of a metal material, and of course, the elastic member 43 can also be made of an insulating material such as plastic.

[0186] The elastic member 43 can be a spring, a spring, a rubber ring, or the like, which has elasticity.

[0187] The elastic member 43 is arranged to support the circumferential side of the ring spring 42, and the ring spring 42 can be provided with a radial Y offset allowance by the elastic member 43, so as to realize radial Y floating, thereby allowing the male terminal 52 to be inserted and connected.

[0188] In some embodiments, the ring spring 42 can also be directly fixed in the female terminal, so as to be installed and fixed.

[0189] In some embodiments, referring to Figures 6 to 10 , the male terminal 52 comprises an insertion terminal 521 for being inserted and connected with the insertion hole 420, and the insertion terminal 521 is movably arranged in the radial Y direction of the insertion hole 420.

[0190] The insertion terminal 521 refers to a part of the male terminal 52 which is inserted and connected with the ring spring 42. The insertion terminal 521 can be made of metal materials such as copper and aluminum. Of course, the insertion terminal 521 can also be made of conductive plastic materials. The insertion terminal 521 can be a columnar member or an axial member with a circular or polygonal cross section.

[0191] The insertion terminal 521 is movably arranged in the radial Y direction of the insertion hole 420, which means that the insertion terminal 521 is arranged in the male terminal 52, supported by the male terminal 52, and can move relative to the male terminal 52 in the radial Y direction of the insertion hole 420.

[0192] The male terminal 52 uses the insertion terminal 521 to be inserted and connected with the insertion hole 420 of the ring spring 42, and the insertion terminal 521 is movably arranged in the radial Y direction of the insertion hole 420, so as to realize radial Y floating of the insertion terminal 521, thereby reducing the influence of assembly errors and facilitating insertion into the insertion hole 420 of the ring spring 42.

[0193] In some embodiments, referring to Figures 6 to 10 , the male terminal 52 comprises a fixed terminal 522 for being connected with an external circuit, the fixed terminal 522 is electrically connected with the insertion terminal 521, and the fixed terminal 522 is fixedly connected with the male terminal 52.

[0194] The fixed terminal 522 refers to a part of the male terminal 52 which is connected with an external circuit. The fixed terminal 522 can be made of metal materials such as copper and aluminum. Of course, the fixed terminal 522 can also be made of conductive plastic materials. The fixed terminal 522 can be a columnar member or an axial member with a circular or polygonal cross section.

[0195] The electrical connection between the fixed terminal 522 and the plug-in terminal 521 means that the fixed terminal 522 and the plug-in terminal 521 can be electrically connected through a structure such as a wire or a conductive sheet, or the fixed terminal 522 and the plug-in terminal 521 can be in contact to be directly electrically connected.

[0196] The fixed terminal 522 is fixedly connected to the male terminal support 51 to be supported by the male terminal support 51, so as to facilitate the installation and use of the fixed terminal 522.

[0197] The fixed terminal 522 is provided and electrically connected to the plug-in terminal 521, which can facilitate the connection of an external circuit and the support and connection of the male terminal 50, and facilitate the installation and use.

[0198] In some embodiments, referring to Figures 6 to 10 The male terminal support 51 is provided with an inner hole 510, the plug-in terminal 521 has opposite first and second ends 5211 and 5212, the first end 5211 is used to be adapted and plugged into the ring spring 42, the second end 5212 has a protrusion 5213 extending outward from the peripheral side, the protrusion 5213 extends into the inner hole 510, one end of the inner hole 510 extends inward to form a limiting portion 511, the limiting portion 511 abuts against the protrusion 5213, and the peripheral side of the plug-in terminal 521 has a gap with the limiting portion 511, and the fixed terminal 522 is connected to the other end of the inner hole 510.

[0199] The inner hole 510 means that a through hole structure is provided in the male terminal support 51. The inner hole 510 is provided in the male terminal support 51 to facilitate the installation of the fixed terminal 522 and the plug-in terminal 521.

[0200] The first and second ends 5211 and 5212 are opposite ends of the plug-in terminal 521. The first end 5211 is used to be adapted and plugged into the ring spring 42, which means that the first end 5211 of the plug-in terminal 521 extends out of the male terminal support 51 and is used to be adapted and plugged into the insertion hole 420 of the ring spring 42 to be adapted and connected with the ring spring 42.

[0201] The peripheral side of the second end 5212 extends outward to form a protrusion 5213, which means that the second end 5212 is provided with a protrusion 5213, and the protrusion 5213 is formed by the peripheral side of the second end 5212 extending outward. The protrusion 5213 can be in the shape of a block or a plate. As an example, the protrusion 5213 can be in the shape of a ring to surround the second end 5212 of the plug-in terminal 521. As an example, the protrusion 5213 can be a plurality of plate-shaped pieces and be distributed on the peripheral side of the second end 5212 of the plug-in terminal 521.

[0202] The protrusion 5213 can be integrally formed with the plug-in terminal 521 to facilitate processing and manufacturing. Of course, the protrusion 5213 can also be separately manufactured and then fixedly connected to the plug-in terminal 521 by welding, bonding or the like.

[0203] The protrusion 5213 extends into the inner hole 510 means that the protrusion 5213 is located in the inner hole 510, and correspondingly, the second end 5212 of the plug-in terminal 521 also extends into the inner hole 510.

[0204] One end of the inner hole 510 extends inwardly to form a limiting portion 511 means that the limiting portion 511 is a protruding structure formed by the side wall of one end of the inner hole 510 extending towards the center of the inner hole 510. The limiting portion 511 can be in the shape of a block, a plate, etc. As an example, the limiting portion 511 can be annular. As an example, the limiting portion 511 can be a plurality of plate-shaped pieces distributed along the circumference of the inner wall of the inner hole 510.

[0205] The limiting portion 511 abuts against the protrusion 5213 means that along the axial direction X of the inner hole 510, the projection of the limiting portion 511 at least partially overlaps the projection of the protrusion 5213, and the protrusion 5213 extends into the inner hole 510, and the limiting portion 511 is located on the side of the protrusion 5213 close to the first end 5211 of the plug-in terminal 521, so as to prevent the protrusion 5213 from falling off from one end of the inner hole 510. While the other end of the inner hole 510 is provided with the fixed terminal 522, the protrusion 5213 can be limited in the inner hole 510, and the plug-in terminal 521 is installed on the male terminal holder 51, so as to reduce the risk of the plug-in terminal 521 falling off.

[0206] There is a gap between the peripheral side surface of the plug-in terminal 521 and the limiting portion 511 means that when the plug-in terminal 521 is located at the center of the inner hole 510, there is a certain gap between the limiting portion 511 and the peripheral side surface of the plug-in terminal 521. In this way, the plug-in terminal 521 can move along the radial direction Y of the inner hole 510 relative to the male terminal holder 51, so as to realize the radial Y floating of the plug-in terminal 521.

[0207] The other end of the inner hole 510 means the end of the inner hole 510 away from the limiting portion 511. The fixed terminal 522 is connected to the other end of the inner hole 510, and the fixed terminal 522 and the plug-in terminal 521 are located at opposite ends of the inner hole 510, respectively.

[0208] The inner hole 510 is provided in the male terminal holder 51 to connect the fixed terminal 522, and accommodate the second end 5212 and the protrusion 5213 of the plug-in terminal 521, and the limiting portion 511 is provided on the male terminal holder 51 to prevent the plug-in terminal 521 from falling off; and the gap between the peripheral side surface of the plug-in terminal 521 and the limiting portion 511 allows the plug-in terminal 521 to float along the radial direction Y of the inner hole 510 in the inner hole 510.

[0209] In some embodiments, the plug-in terminal 521 can also be installed on the male terminal holder 51 by using a spring, a spring sheet or the like structure, so as to realize the radial Y floating of the plug-in terminal 521 relative to the male terminal holder 51.

[0210] In some embodiments, referring to Figures 6 to 10 The second end 5212 is supported on the fixed terminal 522, the end face of the second end 5212 is a plane, and the end face of the fixed terminal 522 close to the second end 5212 is a plane adapted to support the end face of the second end 5212.

[0211] The second end 5212 is supported on the fixed terminal 522 means that the second end 5212 of the plug-in terminal 521 is structured with the fixed terminal 522 and supported on the fixed terminal 522 to be electrically connected with the fixed terminal 522.

[0212] The end face of the second end 5212 is a plane means that the end face of the second end 5212 away from the first end 5211 is a plane. The end face of the fixed terminal 522 close to the second end 5212 is a plane adapted to support the end face of the second end 5212 means that the end face of the fixed terminal 522 close to the second end 5212 is a plane to adapt to support the end face of the second end 5212. The end face of the second end 5212 and the corresponding end face of the fixed terminal 522 are set to be planes to support the second end 5212 on the fixed terminal 522, and to make the second end 5212 in good contact with the fixed terminal 522, increase the contact area, and facilitate the conduction of large current. In addition, the plug-in terminal 521 can also translate on the fixed terminal 522 to realize radial Y floating.

[0213] The end face of the second end 5212 and the corresponding end face of the fixed terminal 522 are set to be planes to support the second end 5212 on the fixed terminal 522, realize the electrical connection between the plug-in terminal 521 and the fixed terminal 522, facilitate the conduction of large current, and facilitate the sliding of the plug-in terminal 521 on the fixed terminal 522 to realize the radial Y floating of the plug-in terminal 521.

[0214] In some embodiments, referring to Figures 6 to 10 The connecting male end 50 further comprises an elastic member 53 elastically abutting against the end face of the second end 5212, and the elastic member 53 is connected with the fixed terminal 522.

[0215] The elastic member 53 is a structural member with elasticity. The elastic member 53 can be a spring, a spring piece, a rubber pad, etc. The elastic member 53 can be made of a conductive material such as metal. Of course, the elastic member 53 can also be made of an insulating material such as plastic or rubber.

[0216] The elastic member 53 is connected with the fixed terminal 522 to be supported by the fixed terminal 522.

[0217] The elastic member 53 is arranged to abut against the end surface of the second end 5212, which can reduce the contact pressure between the end surface of the second end 5212 and the fixed terminal 522, and further reduce the friction between the second end 5212 and the fixed terminal 522, thereby facilitating the radial Y movement of the plug-in terminal 521 relative to the fixed terminal 522.

[0218] In some embodiments, referring to Figures 6 to 10 , the fixed terminal 522 is provided with a positioning groove 5220 on the end surface close to the plug-in terminal 521, and the elastic member 53 is arranged in the positioning groove 5220.

[0219] The positioning groove 5220 refers to a groove structure arranged on the end surface of the fixed terminal 522.

[0220] The positioning groove 5220 is arranged on the end surface of the end of the fixed terminal 522 close to the plug-in terminal 521, so as to facilitate the installation of the elastic member 53 and facilitate the abutment of the elastic member 53 against the end surface of the second end 5212 of the plug-in terminal 521.

[0221] In some embodiments, the elastic member 53 can also be fixedly connected with the side surface of the fixed terminal 522, such as being welded with the side surface of the fixed terminal 522, so as to fix the elastic member 53 on the fixed terminal 522.

[0222] In some embodiments, referring to Figures 6 to 10 , the positioning groove 5220 is annular, and the elastic member 53 is a spring bent into an annular shape.

[0223] The elastic member 53 being a spring bent into an annular shape means that the elastic member 53 is bent into an annular shape by a spring.

[0224] The spring is bent into an annular shape to form the elastic member 53, which is simple to manufacture and can abut against the end surface of the second end 5212 of the plug-in terminal 521 with good elasticity, and can also electrically connect the fixed terminal 522 and the plug-in terminal 521 through the spring, so as to improve the stability of the electrical connection between the fixed terminal 522 and the plug-in terminal 521.

[0225] In some embodiments, referring to Figures 6 to 10 , the fixed terminal 522 comprises a support section 5221 and a connecting section 5222, the connecting section 5222 is connected with the support section 5221, the support section 5221 is used for supporting the plug-in terminal 521, and the support section 5221 is fixed to the other end of the inner hole 510; the connecting section 5222 extends out of the inner hole 510 for connecting external circuits.

[0226] The support section 5221 refers to a section of the fixed terminal 522 close to the plug-in terminal 521. The connecting section 5222 refers to a section of the fixed terminal 522 away from the plug-in terminal 521.

[0227] The connecting section 5222 is connected to the supporting section 5221 to conduct current.

[0228] As an example, the connecting section 5222 and the supporting section 5221 can be integrally formed to facilitate processing and secure connection between the connecting section 5222 and the supporting section 5221. As an example, the connecting section 5222 and the supporting section 5221 can also be separately manufactured and then fixedly connected by means of bonding, adhesion, screwing, etc.

[0229] The fixing terminal 522 is provided with the supporting section 5221 to be installed in the inner hole 510 of the male terminal seat 51 and facilitate support of the plug-in terminal 521, and provided with the connecting section 5222 to be connected to an external circuit and facilitate installation and use.

[0230] In some embodiments, as shown in Figures 6 to 10 , the supporting section 5221 has an outer diameter greater than that of the connecting section 5222.

[0231] The outer diameter of the supporting section 5221 refers to the diameter of the supporting section 5221.

[0232] The outer diameter of the connecting section 5222 refers to the diameter of the connecting section 5222.

[0233] The supporting section 5221 is provided with a relatively large outer diameter to support the plug-in terminal 521, increase the contact area with the plug-in terminal 521, reduce the internal resistance of the male terminal 52, and facilitate the conduction of large current. The connecting section 5222 is provided with a relatively small outer diameter to be connected to an external circuit.

[0234] In some embodiments, as shown in Figures 6 to 10 , the fixing terminal 522 is provided with external threads.

[0235] The external threads refer to the threaded structure formed on the outer circumferential surface of the fixing terminal 522.

[0236] The external threads are provided on the fixing terminal 522 to be connected to an external circuit and facilitate installation and use.

[0237] In some embodiments, the fixing terminal 522 can also be fixed to an external circuit by means of welding, riveting, etc.

[0238] In some embodiments, when the fixing terminal 522 includes the connecting section 5222, the external threads are provided on the connecting section 5222.

[0239] In some embodiments, when the fixing terminal 522 includes the supporting section 5221, the positioning groove 5220 is provided on the supporting section 5221.

[0240] In some embodiments, as shown in ​ , the male terminal seat 51 has a polygonal cross section perpendicular to the axial direction X of the male terminal 52.

[0241] The axial direction X of the male terminal 52 is the length direction of the male terminal 52 and the axial direction X of the insertion hole 420.

[0242] The polygon refers to a shape with more than or equal to three sides, such as a triangle, a quadrilateral, a hexagon, and the like.

[0243] The male terminal seat 51 is in a polygonal shape in a cross section perpendicular to the axial direction X of the male terminal 52, that is, the outer contour of the male terminal seat 51 is in a prismatic shape.

[0244] The cross section of the male terminal seat 51 is set to be in a polygonal shape, so as to facilitate the rotation of the male terminal seat 51 by using a tool, and further facilitate the installation and fixation of the male terminal 50, so as to facilitate the installation and use.

[0245] According to some embodiments of the present application, the connector 400 includes the female terminal 40 and the male terminal 50. The female terminal 40 includes the ring spring 42 and the female terminal seat 41 supporting the ring spring 42, and the ring spring 42 surrounds the insertion hole 420. The male terminal 50 is used for the male terminal 52 adapted to be inserted into the insertion hole 420 to be elastically connected with the ring spring 42 and the male terminal seat 51 supporting the male terminal 52. The ring spring 42 includes a plurality of turns of conductive wires 421 spirally wound in the axial direction X of the insertion hole 420, and the conductive wires 421 surround the insertion hole 420. The ring spring 42 is in a polygonal shape along the axial direction X of the ring spring 42. The male terminal 52 includes the insertion terminal 521 adapted to be inserted into the insertion hole 420 and the fixed terminal 522 used for connecting an external circuit. The male terminal seat 51 is provided with the inner hole 510, the insertion terminal 521 has the opposite first end 5211 and the second end 5212, the first end 5211 is used for being adapted to be inserted into the ring spring 42, the second end 5212 has the protrusion 5213 outwardly extended on the peripheral side, the protrusion 5213 extends into the inner hole 510, one end of the inner hole 510 extends inwardly to form the limiting portion 511, the limiting portion 511 abuts against the protrusion 5213, the peripheral side of the insertion terminal 521 and the limiting portion 511 have a gap, and the fixed terminal 522 is connected with the other end of the inner hole 510. The second end 5212 is supported on the fixed terminal 522, the end surface of the second end 5212 is a flat surface, and the end surface of the fixed terminal 522 close to the second end 5212 is a flat surface adapted to support the end surface of the second end 5212. The male terminal 50 further includes the elastic member 53 elastically abutting against the end surface of the second end 5212, and the elastic member 53 is connected with the fixed terminal 522. The fixed terminal 522 is provided with the positioning groove 5220 on the end surface close to the insertion terminal 521, and the elastic member 53 is arranged in the positioning groove 5220.

[0246] The connecting female end 40 of the connector 400 uses the conductive wire 421 to be wound into a polygonal ring spring 42, which is simple in structure and short in length, and the length of the corresponding plug-in terminal 521 can be set shorter, reducing material production and cost. The plug-in terminal 521 is supported on the fixed terminal 522 through planar cooperation, and can realize large current conduction, such as 100 amperes (A) or more, and the plug-in terminal 521 can move along the radial direction Y relative to the fixed terminal 522 to realize radial Y floating, thereby reducing the precision requirement of installation and use.

[0247] According to some embodiments of the present application, the present application also provides a battery device 200 comprising the connector 400 as described in the above embodiments.

[0248] According to some embodiments of the present application, the present application also provides an energy storage device 14 comprising the connector 400 as described in the above embodiments or the battery device 200 as described in the above embodiments, and the battery device 200 is used to store or provide electric energy.

[0249] According to some embodiments of the present application, the present application also provides an energy storage system 13 comprising a power conversion device 131 and the energy storage device 14 as described in the above embodiments, and the power conversion device 131 is electrically connected between a power generation device 132 and the energy storage device 14.

[0250] According to some embodiments of the present application, the present application also provides a power utilization device comprising the connector 400 as described in the above embodiments, the battery device 200 as described in the above embodiments, the energy storage device 14 as described in the above embodiments, or the energy storage system 13 as described in the above embodiments, and the battery device 200 is used to store or provide electric energy.

[0251] According to some embodiments of the present application, the present application also provides a charging network 12 comprising a charging pile and the energy storage device 14 as described in the above embodiments or the energy storage system 13 as described in the above embodiments, and the energy storage device 14 is used to provide electric energy for the charging pile.

[0252] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and 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: it 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 description 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. The female end comprises a ring spring and a female end support for supporting the ring spring, the ring spring surrounds a socket; The male end comprises a male end terminal for fitting into the socket to elastically connect with the ring spring and a male end support for supporting the male end terminal.

2. The connector of claim 1, wherein In the axial direction of the ring spring, the ring spring is polygonal.

3. The connector of claim 2, wherein In the axial direction of the ring spring, the ring spring is hexagonal.

4. The connector of claim 2 or 3, wherein At least part of at least one side of the ring spring is bent towards the inside of the socket.

5. The connector of claim 2 or 3, wherein At least part of at least one side of the ring spring is bent towards the outside of the socket.

6. The connector of any one of claims 2-5, wherein, The ring spring comprises at least one coil of conductive wire wound into a ring shape, the conductive wire surrounds the socket.

7. The connector of claim 6, wherein The conductive wire is spirally wound around the axial direction of the socket.

8. The connector of any one of claims 1-7, wherein, The female end support comprises an outer sleeve, the ring spring is arranged in the outer sleeve.

9. The connector of claim 8, wherein, The female end support further comprises a connecting plate arranged around the outer sleeve, the connecting plate is connected with the outer sleeve.

10. The connector of any one of claims 1-9, wherein, The female end further comprises an elastic member elastically abutting the peripheral side of the ring spring in the radial direction of the socket, the elastic member is connected with the female end support.

11. The connector of any one of claims 1-10, wherein, The male end terminal comprises a plug-in terminal for fitting into the socket, the plug-in terminal is movably mounted on the male end support in the radial direction of the socket.

12. The connector of claim 11, wherein, The male end terminal comprises a fixed terminal for connecting an external circuit, the fixed terminal is electrically connected with the plug-in terminal, and the fixed terminal is fixedly connected with the male end support.

13. The connector of claim 12, wherein, The male end support is provided with an inner hole, the plug-in terminal has opposite first and second ends, the first end is used for fitting into the socket, the peripheral side of the second end outwardly extends a protrusion, the protrusion extends into the inner hole, one end of the inner hole inwardly extends a limiting portion, the limiting portion abuts the protrusion, a gap is formed between the peripheral side of the plug-in terminal and the limiting portion, and the other end of the inner hole is connected with the fixed terminal.

14. The connector of claim 13, wherein, The second end is supported on the fixed terminal, the end face of the second end is a plane, and the end face of the fixed terminal close to the second end is a plane for supporting the end face of the second end.

15. The connector of claim 14, wherein, The male end further comprises an elastic member elastically abutting the end face of the second end, and the elastic member is connected with the fixed terminal.

16. The connector of claim 15, wherein, The fixed terminal is provided with a positioning groove on the end face close to the plug-in terminal, and the elastic member is arranged in the positioning groove.

17. The connector of claim 16, wherein The positioning groove is annular, and the elastic member is a spring bent into an annular shape.

18. The connector of any one of claims 13-17, wherein, The fixed terminal comprises a supporting section and a connecting section, the connecting section is connected with the supporting section, the supporting section is used for supporting the plug-in terminal, and the supporting section is fixed to the other end of the inner hole; and the connecting section extends out of the inner hole to be used for connecting an external circuit.

19. The connector of claim 18, wherein, The outer diameter of the supporting section is greater than the outer diameter of the connecting section.

20. The connector of any one of claims 12-19, wherein, The fixed terminal is provided with an external thread.

21. The connector of claim 20, wherein, The male end support is polygonal in the cross section perpendicular to the axial direction of the male end terminal.

22. A battery device, characterized by The application relates to a connector.

23. An energy storage device, comprising: The application relates to a battery device comprising the connector or the battery device for storing or providing electric energy.

24. An energy storage system characterized by, comprising a power conversion device electrically connected between the power generating device and the energy storage device as claimed in claim 23.

25. An electrical device, comprising: comprising the connector as claimed in any one of claims 1-21, the battery device as claimed in claim 22, the energy storage device as claimed in claim 23, or the energy storage system as claimed in claim 24, the battery device for storing or providing electrical energy.

26. A charging network characterized by, comprising the charging post and the energy storage device as claimed in claim 23 or the energy storage system as claimed in claim 24, the energy storage device for providing electrical energy to the charging post.

Images