Battery device, power utilization device and energy storage device

Abstract

The utility model provides a battery device, a power utilization device and an energy storage device, and belongs to the technical field of batteries. The battery device comprises a battery monomer, a junction box and a connecting assembly, the connecting assembly is used for electrically connecting the single battery and the junction box, and comprises a first connecting section electrically connected with the single battery, a second connecting section electrically connected with the junction box, and a third connecting section electrically connected with the first connecting section and the second connecting section; the connecting terminal, used for being connected with the third connecting section, of the first connecting section and the connecting terminal, used for being connected with the second connecting section, of the third connecting section are female connecting ends, and each female connecting end comprises a first conductive part and a protection part which are used for electric connection. The protection part is configured to shield the first conductive part after the female connection end is electrically disconnected with the corresponding male connection end. And the protection part of the female connecting end can realize high-voltage protection, so that an operator is effectively prevented from mistakenly touching an electrified high-voltage body in a high-voltage breaking process, and the protection grade of the battery device is improved.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to sustainable social development. Battery devices, with their ability to store or release energy as needed, are widely used in various electrical devices and energy storage systems, and are an important component in promoting energy transition and sustainable development. For the new energy industry, battery technology is a crucial factor in its development.

[0003] In related technologies, it is often necessary to disconnect the high-voltage connection of the battery device during maintenance or repair operations. Existing wiring harness interfaces lack effective protection, posing a risk of accidental contact with high voltage to operators. Utility Model Content

[0004] This application aims to at least address one of the technical problems existing in the prior art. Therefore, one object of this application is to provide a battery device, an electrical device, and an energy storage device to improve the protection level of the battery device when high voltage is interrupted.

[0005] An embodiment of the first aspect of this application provides a battery device, which includes a battery cell, a junction box, and a connection assembly. The connection assembly is used to electrically connect the battery cell and the junction box. The connection assembly includes a first connection segment electrically connected to the battery cell, a second connection segment electrically connected to the junction box, and a third connection segment electrically connected to the first and second connection segments. The connection terminals of the first and third connection segments for connecting to the third connection segment and the connection terminals of the third connection segment for connecting to the second connection segment are both female connection terminals. The female connection terminal includes a first conductive part for electrical connection and a protective part. The protective part is configured to shield the first conductive part after the female connection terminal is disconnected from the corresponding male connection terminal.

[0006] In the technical solution of this application embodiment, an additional third connecting section for conversion is provided between the battery cell and the junction box. A female connecting terminal with a protective part is provided on the connecting terminal of the first connecting section for connecting with the third connecting section and the connecting terminal of the third connecting section for connecting with the second connecting section. This can achieve high voltage protection for the first conductive part, avoid direct exposure of the high voltage end, effectively reduce the risk of electric shock to the operator during the high voltage disconnection process, and improve the protection level of the battery device when the high voltage is disconnected.

[0007] In some embodiments, the protective element includes a first housing and a shield; the first housing includes a receiving cavity with an opening, a conductive portion is disposed in the receiving cavity, and is connected to a male connector through the opening. The shield is movably connected to the first housing, and the shield is configured to keep the opening open when connected to the male connector, and to close the opening after disconnection from the male connector. Further configuring the first housing and the shield provides more effective and reliable isolation protection without affecting the connection effect.

[0008] In some embodiments, the shielding member includes a movable connecting element, a baffle, and a driving element; the baffle is movably connected to the first housing via the movable connecting element; the driving element is connected to the baffle and configured to drive the baffle to close the opening after disconnection from the male connector. By driving the baffle to close the opening after disconnection from the male connector, the reliability of the protective part in isolating the first conductive part is improved, the protection level of the female connector is improved, and accidental contact by the operator is prevented.

[0009] In some embodiments, the baffle includes a main body and an actuating part; the main body is used to close the opening; the actuating part is connected to the main body and is configured to receive an external force and drive the main body to move to open the opening. When an external force is applied to the actuating part, the baffle can be opened to facilitate connection between the female connector and the male connector.

[0010] In some embodiments, the actuating portion is at least partially located on both sides of the movable connecting element, and rotates about the center of the movable connecting element when subjected to an external force. Connecting the baffle to the movable connecting element by rotation allows the baffle to rotate about the center of the movable connecting element when subjected to an external force, simplifying the connection structure and improving the reliability of the protection.

[0011] In some embodiments, the first housing is provided with a first groove communicating with the opening, the extension direction of the first groove being parallel to the insertion direction of the female connector; the first groove is used to accommodate the action part and allow the action part to move within the first groove after being subjected to force. The first groove provides the space required for the action part to move, avoiding interference, and at the same time provides a limit for the movement of the action part, preventing deviation during movement, and improving the structural stability and reliability of the protection of the female connector.

[0012] In some embodiments, the driving element is a torsion spring or a return spring. Using a torsion spring or a return spring as the driving element allows the baffle to automatically return to its original position and cover the opening when the male connector is disconnected, improving the reliability of the protection.

[0013] In some embodiments, the female connector further includes a first mounting portion that passes through the first housing. The first mounting portion includes a first mounting ear protruding from the surface of the first housing, which is used for fixed connection with the male connector. The female connector is connected to the male connector through the first mounting ear of the first mounting portion, which can offset the mounting interface from the housing, thus facilitating installation.

[0014] In some embodiments, the first housing further includes two second grooves disposed opposite each other along the insertion direction perpendicular to the female connector end. The extension direction of the second grooves is parallel to the insertion direction of the female connector end. Each second groove includes a first groove segment communicating with an opening and a second groove segment communicating with the end of the first groove segment away from the opening. The groove width of the first groove segment perpendicular to the extension direction is smaller than the groove width of the second groove segment. A first mounting part is disposed in the second groove segment, and a first mounting ear extends outward from the second groove segment. The different groove widths of the second grooves can provide a limit for the first mounting part and simultaneously provide space for the connecting components of the male connector end, achieving a better installation and positioning effect.

[0015] In some embodiments, the first mounting portion further includes a first mounting body connected to the first mounting ear and disposed within the receiving cavity. The first mounting body has a recessed area, and the first conductive portion is disposed in the recessed area. The recessed area provides physical restraint for the first conductive portion, enabling rapid and precise installation of the conductive portion during assembly and preventing misalignment. During use, the recessed area effectively restricts the circumferential and radial displacement of the first conductive portion, preventing electrical contact position offset and mechanical connection fit deviation caused by conductive portion displacement, thereby achieving relative fixation between the conductive portion and the mechanical connection structure and improving the reliability of the electrical connection.

[0016] In some embodiments, the surface of the first conductive part facing away from the recessed area is flush with the mounting surface of the first mounting ear connecting the male connector end. The coplanar design of the electrical connection and the mechanical connection makes the mating of the male and female connector ends a simple planar fit assembly, eliminating the need for additional high and low position calibration of the conductive parts, reducing the difficulty of assembly operations. The mechanical connection locking force of the male and female connector ends (such as bolt tightening force, buckle tightening force) will directly act on the electrical connection area on the same plane, forming a continuous and stable electrical contact pressure, effectively preventing contact loosening caused by vibration, impact, thermal expansion and contraction, etc., improving the reliability of the connection, and also helping to reduce contact resistance.

[0017] In some embodiments, the connecting terminals of the third connecting segment for connecting to the first connecting segment and the connecting terminals of the second connecting segment for connecting to the third connecting segment are both male connecting terminals. The male connecting terminal includes a second conductive portion and a second housing. The second conductive portion is used for electrical connection with the first conductive portion. The second housing is provided with an actuating portion, which drives the protective portion to move to expose the first conductive portion when connected to the female connecting terminal. By configuring the structure of the driving protective portion on the second housing of the male connecting terminal, the opening and closing action of the protective portion is combined with the insertion action of the male connecting terminal and the female connecting terminal, simplifying the connection operation process and improving assembly efficiency. Simultaneously, it effectively prevents the protective portion from opening in a non-connected state, thus avoiding unnecessary exposure of the first conductive portion carrying high voltage, and improving the reliability of isolation protection.

[0018] In some embodiments, the second housing includes a first wall spaced apart from the second conductive portion, the gap between the first wall and the second conductive portion being used to accommodate the first conductive portion of the female connector during insertion. An actuating portion protrudes from the surface of the first wall facing the second conductive portion. Providing the actuating portion on the inner surface of the second housing facing the second conductive portion facilitates control of the overall dimensions, avoids interference between the actuating portion and other components, and simplifies the housing structure of the male connector.

[0019] In some embodiments, the actuating part is a protrusion parallel to the direction in which the male connector end and the female connector end are inserted. The actuating part is constructed as a continuous protrusion along the insertion direction, so that it can continuously act on the protective part of the female connector end during the insertion movement, thereby keeping the opening of the female connector end in an open state to facilitate connection and improve connection efficiency.

[0020] In some embodiments, the male connector further includes a second mounting portion, which includes a second mounting body fixedly connected to the second conductive portion, and a second mounting ear connected to the second mounting body and extending out of the second housing. The second mounting ear is used for fixed connection with the female connector. By providing a mounting structure at the male connector that matches the mounting components of the female connector, the installation positioning difficulty during insertion can be simplified, and the reliability and stability of the connection can be improved.

[0021] In some embodiments, the second mounting body includes a second recessed area, a second conductive portion is disposed in the second recessed area, and the surface of the second conductive portion facing away from the second recessed area is flush with the mounting surface of the second mounting ear for connecting the female connector. This configuration simplifies mating positioning during insertion, improves connection efficiency and reliability, and helps reduce the contact resistance between the male and female connectors.

[0022] In some embodiments, a battery cell includes a positive terminal and a negative terminal, and a junction box includes a positive connection terminal and a negative connection terminal. Connecting components are provided between the positive terminal and the positive connection terminal, and between the negative terminal and the negative connection terminal. The presence of connecting components at both the positive and negative ends of the battery cell provides high-voltage protection, reducing the risk of accidental electric shock to operators when the high voltage is disconnected, and improving the protection level of the battery device.

[0023] An embodiment of the second aspect of this application provides an electrical device that includes the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0024] An embodiment of the third aspect of this application provides an energy storage device, which includes the battery device in the above embodiments, and the energy storage device is used to store electrical energy.

[0025] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0026] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0027] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0028] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0029] Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the junction box and connection assembly according to some embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the female connector end protection section when it is closed according to some embodiments of this application;

[0032] Figure 6 This is a partial schematic diagram of the female connector end in some embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the structure of the female connector end protection section when it is opened, according to some embodiments of this application;

[0034] Figure 8 This is a schematic diagram of the structure of the public connection terminal in some embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the structure of a public connector according to another embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] Vehicle 1000, battery device 100, controller 200, motor 300;

[0038] Battery module 10, battery cell 11, end cap 101, electrode terminal 101a, housing 102, electrode assembly 103, tab 103a;

[0039] Enclosure 20, first part 21, second part 22, connecting assembly 30, first connecting section 31, second connecting section 32, third connecting section 33, junction box 40;

[0040] Protective part 41, first housing 411, receiving cavity 412, opening 413, shielding member 414, movable connecting element 415, baffle 416, main body part 4161, actuating part 4162, driving element 417, first groove 421, first conductive part 42.

[0041] Female connection end 50, first mounting part 51, first mounting ear 52, second groove 53, first groove segment 531, second groove segment 532, first mounting body 54, recessed area 55;

[0042] Male connector 60, second conductive part 61, second housing 62, actuating part 621, protrusion 622, first wall 63, second mounting part 64, second mounting body 641, second mounting ear 642, second recessed area 643. Detailed Implementation

[0043] 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.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application 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.

[0045] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0046] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, "a and / or b" can represent three cases: a exists alone, a and b exist simultaneously, and b exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0048] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0049] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0050] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0051] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in various electronic devices, such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. With the continuous expansion of rechargeable battery applications, market demand is also constantly increasing.

[0052] When performing high-voltage system maintenance or battery pack repair on battery devices, it is often necessary to disconnect the high-voltage connection terminals of the battery devices. Although the existing wiring harness connection terminals have protective covers, the main positive or main negative cover must be opened when disconnecting the high voltage, which poses a risk of accidental contact with high voltage for operators.

[0053] Based on the above, this application provides a battery device, which includes a battery cell, a junction box, and a connection assembly. The connection assembly is used to electrically connect the battery cell and the junction box. The connection assembly includes a first connection segment electrically connected to the battery cell, a second connection segment electrically connected to the junction box, and a third connection segment electrically connected to the first and second connection segments. The connection terminals of the first connection segment for connecting to the third connection segment and the third connection segment for connecting to the second connection segment are both female connection terminals. The female connection terminal includes a first conductive part for electrical connection and a protective part. The protective part is configured to shield the first conductive part after the female connection terminal is disconnected from the corresponding male connection terminal.

[0054] An additional third connection section for conversion is provided between the battery cell and the junction box. The connection terminals of the first connection section for connecting to the third connection section and the connection terminals of the third connection section for connecting to the second connection section are provided with female connection terminals with protective parts. This can provide isolation protection for the first conductive part, avoid direct exposure of the high voltage end, effectively reduce the risk of electric shock to the operator during the high voltage disconnection process, and improve the protection level of the battery device when the high voltage is disconnected.

[0055] The technical solutions described in the embodiments of this application are applicable to battery devices, electrical devices using battery devices, and energy storage devices.

[0056] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0057] This application also provides an energy storage device that uses a battery as a power source. The energy storage device can be, but is not limited to, an energy storage container, an energy storage cabinet, an energy storage power station, an energy storage battery pack, or a portable energy storage system.

[0058] For ease of explanation, the following embodiments use a battery device according to an embodiment of this application as an example.

[0059] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0060] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0061] Please refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application. The battery device 100 includes a housing 20 and a battery cell 11, with the battery cell 11 housed within the housing 20. The housing 20 provides a space for the battery cell 11 and can have various structures. In some embodiments, the housing 20 may include a first portion 21 and a second portion 22, which overlap each other, jointly defining a space for accommodating the battery cell 11. The second portion 22 may be a hollow structure with one open end, and the first portion 21 may be a plate-like structure, covering the open side of the second portion 22 so that the first portion 21 and the second portion 22 jointly define the space. Alternatively, both the first portion 21 and the second portion 22 may be hollow structures with one open side, with the open side of the first portion 21 covering the open side of the second portion 22. Of course, the housing 20 formed by the first portion 21 and the second portion 22 can have various shapes, such as a cylinder, a cuboid, etc.

[0062] In the battery device 100, there can be multiple battery cells 11, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 11 are connected in both series and parallel configurations. Multiple battery cells 11 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 11 is housed within the housing 20. Alternatively, the battery device 100 can also consist of multiple battery cells 11 first connected in series, parallel, or in a mixed manner to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 20. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 11.

[0063] The battery device 100 mentioned in the embodiments of this application may include one or more battery modules 10 for providing voltage and capacity. The battery module 10 may include a plurality of battery cells 11, which are connected in series, parallel or mixed connection through a busbar.

[0064] As an example, the battery module 10 is formed by arranging and fixing multiple battery cells 11 together to form an independent module. As an example, the battery module 10 can also be formed by bundling multiple battery cells 11 together with cable ties.

[0065] As an example, the housing 20 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 20 forms a closed space to accommodate the battery module 10.

[0066] In some embodiments, the housing 20 may be part of the vehicle's chassis structure. For example, a portion of the housing 20 may be at least a portion of the vehicle's floor, or a portion of the housing 20 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0067] Each battery cell 11 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 11 can be cylindrical, flat, cuboid, or other shapes.

[0068] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. Battery cell 11 refers to the smallest unit that makes up the battery. For example... Figure 3 The battery cell 11 includes an end cap 101, a housing 102, and an electrode assembly 103. The end cap 101 is provided with an electrode terminal 101a, and the electrode assembly 103 includes a tab 103a, which is electrically connected to the electrode terminal 101a.

[0069] This application provides a battery device 100, including a battery cell 11, a junction box 40, and a connection assembly 30. The connection assembly 30 is used to electrically connect the battery cell 11 and the junction box 40. The connection assembly 30 includes a first connection segment 31 electrically connected to the battery cell 11, a second connection segment 32 electrically connected to the junction box 40, and a third connection segment 33 electrically connected to the first connection segment 31 and the second connection segment 32. The connection terminals of the first connection segment 31 for connecting to the third connection segment and the connection terminals of the third connection segment for connecting to the second connection segment are both female connection terminals 50. The female connection terminal 50 includes a first conductive part 42 for electrical connection and a protective part 41. The protective part 41 is configured to shield the first conductive part 42 after the female connection terminal 50 is disconnected from the corresponding male connection terminal 60.

[0070] Please see Figures 4 to 6 In this embodiment, the junction box 40 can be integrated into the battery device 100. It is a unit or module used to centrally realize electrical connection, power distribution, circuit protection, or signal management functions. It can be an electrical hub between the internal circuit of the system and the external load or charging equipment. Specifically, the junction box 40 may include an insulating housing, and the interior is arranged with busbars, copper busbars, printed circuit boards, electrical components, etc.

[0071] The battery cell 11 is electrically connected to the junction box 40 through the connection assembly 30. The connection assembly 30 can be a general term for components that establish a stable electrical connection or a reliable mechanical connection. Specifically, it can include main conductive components, such as flexible stacked busbars, high-voltage wire harnesses, and copper-aluminum busbars; it can also include accessories or components related to connection or insulation.

[0072] One end of the first connecting segment 31 is connected to the battery cell 11, and the other end is connected to the third connecting segment 33. One end of the second connecting segment 32 is connected to the junction box 40, and the other end is connected to the third connecting segment 33. That is, the third connecting segment 33 serves as a transition element between the first connecting segment 31 and the second connecting segment 32.

[0073] The first connecting segment 31, the second connecting segment 32, and the third connecting segment 33 are connected to each other via a male connecting terminal 60 and a female connecting terminal 50. The male connecting terminal 60 and the female connecting terminal 50 are two structurally compatible electrical connection terminals. For example, they can be electrically connected in a separable manner by any feasible method such as plugging, snapping, or screwing.

[0074] In some embodiments, the female connector 50 may have a recessed connection structure and the male connector 60 may have a convex connection structure. When connecting, at least a portion of the male connector 60 is inserted into the female connector 50 to achieve electrical connection.

[0075] The female connector 50 also includes a first conductive part 42 and a protective part 41. The first conductive part 42 is used to make an electrical connection with the male connector. When applied in the battery device 100, the first conductive part 42 in the female connector 50 can carry high voltage.

[0076] The protective part 41 can be a housing disposed on the outer periphery of the first conductive part 42. When the female connection end 50 is disconnected from the male connection end 60, the protective part 41 of the female connection end 50 will partially or completely cover the first conductive part 42 inside it, so that the first conductive part 42 carrying high voltage is isolated from the outside, avoiding direct exposure of the first conductive part 42, and reducing the risk of electric shock, short circuit or arc damage caused by foreign object entry during personnel operation.

[0077] Both the first connecting segment 31, which connects to the third connecting segment, and the third connecting segment 33, which connects to the second connecting segment, are female connecting ends 50. This ensures that no matter which segment of the connecting assembly 30 is disassembled first by the operator, the end of the connecting segment that remains connected to the battery cell will be a female connecting end with a protective part 41, thereby improving the insulation protection level and reducing the risk of electric shock or short circuit.

[0078] In this embodiment, an additional third connecting section 33 for conversion is provided between the battery cell 11 and the junction box 40. A female connecting end 50 with a protective part 41 is provided at the connecting terminal of the first connecting section 31 for connecting with the third connecting section 33 and the connecting terminal of the third connecting section 33 for connecting with the second connecting section 32. This can provide high-voltage protection for the first conductive part 42, avoid direct exposure of the high-voltage end, effectively reduce the risk of electric shock to the operator during the high-voltage disconnection process, and improve the protection level of the battery device when the high voltage is disconnected.

[0079] According to some embodiments of this application, the protective part 41 includes a first housing 411 and a shielding member 414. The first housing 411 includes a receiving cavity 412 with an opening 413, a conductive part is disposed in the receiving cavity 412 and connected to the male connector 60 through the opening 413. The shielding member 414 is movably connected to the first housing 411, and the shielding member 414 is configured to keep the opening 413 open when connected to the male connector 60, and to close the opening 413 after disconnection from the male connector 60.

[0080] Please see Figures 4 to 6 In this embodiment, the first housing 411 of the protective part 41 may be made of insulating material. The first housing 411 is disposed on the outer periphery of the first conductive part 42 and forms a receiving cavity 412 with an opening. When the male connection end 60 and the female connection end 50 are connected to each other, the end of the male connection end 60 passes through the opening 413 of the first housing 411 and is inserted into the receiving cavity 412.

[0081] The blocking member 414 is connected to the first housing 411 via a movable connection, specifically a guide rail sliding connection, a hinged pivot connection, or a composite motion connection. This allows the blocking member 414 to switch between an open and closed state of the opening 413 by moving or rotating. For example, when the female connection end 50 is connected to the male connection end 60, the blocking member 414 keeps the opening 413 open, thus providing a passage for the male connection end 60 to enter. After disconnection from the male connection end 60, the blocking member 414 can actively or be actuated by other components to reset and close the opening 413.

[0082] In this embodiment, a first housing 411 and a shielding member 414 are further provided to provide more effective and reliable isolation and protection without affecting the connection effect.

[0083] According to some embodiments of this application, the shield 414 includes a movable connecting element 415, a baffle 416, and a driving element 417. The baffle 416 is movably connected to the first housing 411 via the movable connecting element 415. The driving element 417 is connected to the baffle 416 and is configured to drive the baffle 416 to close the opening 413 after it is disconnected from the male connection end 60.

[0084] Please see Figures 4 to 7 In this embodiment, the baffle 416 closes the opening 413 after the male connector 60 is disconnected. The baffle 416 may be made of insulating material. The baffle 416 is movably connected to the first housing 411 via a movable connecting element 415, which may be any feasible connecting structure such as a slide rail, pivot, hinge, or cam.

[0085] The driving element 417 provides the driving force for the movement of the baffle 416. Specifically, the driving element 417 can be a mechanical reset mechanism such as a spring or torsion spring, or an electrical reset mechanism such as a motor. The driving element 417 can actively or passively drive the baffle 416 to move around the movable connecting element 415 to open the opening 413, or actively or passively drive the baffle 416 to move around the movable connecting element 415 to close the opening 413.

[0086] In this embodiment, the drive element 417 causes the baffle 416 to close the opening 413 after the male connection end 60 is disconnected, thereby improving the reliability of the protective part 41 in isolating the first conductive part 42, improving the protection level of the female connection end 50, and preventing accidental contact by the operator.

[0087] According to some embodiments of this application, the baffle 416 includes a main body 4161 and an actuating part 4162. The main body 4161 is used to close the opening 413. The actuating part 4162 is connected to the main body 4161 and is configured to receive external force and drive the main body 4161 to move to open the opening 413.

[0088] Please see Figure 5 In this embodiment, the main body 4161 of the baffle 416 is located on the front of the opening 413 and is the main part used to close the opening 413. The actuating part 4162 is connected to the main body 4161 and is the part of the baffle 416 that receives external driving force.

[0089] When the male connector 60 is disconnected, the main body 4161 closes the opening 413. When an external force is applied to the actuating part 4162 of the baffle 416, the actuating part 4162 can drive the baffle 416 to move, causing the main body 4161 to move and open the opening 413. For example, the external force applied to the actuating part 4162 can be provided by the male connector 60.

[0090] In this embodiment, by providing the action part 4162 to receive the externally applied force, the baffle 416 can be better controlled, thereby improving the reliability of the protection.

[0091] According to some embodiments of this application, the active part 4162 is at least partially located on both sides of the active connecting element 415, and rotates about the center of the active connecting element 415 when subjected to an external force.

[0092] Please see Figure 5 In this embodiment, the movable connecting element 415 is connected at the junction of the action part 4162 and the main body part 4161, that is, the movable connecting element 415 separates the action part 4162 and the main body part 4161 of the baffle 416. In some examples, the action part 4162 and the main body part 4161 are two parts of a single component, which are integrally formed. The specific division can be based on the position of the movable connecting element 415. When the action part 4162 is subjected to an external force, the baffle 416 will rotate about the movable connecting element 415 as an axis. With the application of the external force, the baffle 416 rotates along the center of the movable connecting element 415. At this time, the main body part 4161 rotates synchronously away from and opens the opening 413. The baffle 416 and the movable connecting element 415 can be connected by means of pivot, hinge, etc.

[0093] In this embodiment, the baffle 416 and the movable connecting element 415 are rotatably connected, so that the baffle 416 rotates around the center of the movable connecting element 415 when subjected to external force, which simplifies the connection structure and improves the reliability of protection.

[0094] According to some embodiments of this application, the first housing 411 is provided with a first groove 421 communicating with the opening 413, and the extension direction of the first groove 421 is parallel to the insertion direction of the female connection end 50; the first groove 421 is used to accommodate the action part 4162 and allow the action part 4162 to move in the first groove 421 after being subjected to force.

[0095] Please see Figures 5 to 6 In this embodiment, the first groove 421 is disposed at the bottom of the first housing 411 and communicates with the opening 413. Specifically, it can be constructed as a groove-shaped notch at the edge of the opening 413 of the first housing 411. The functional part 4162 can be arranged in the space of the first groove 421, and the extension direction of the first groove 421 is parallel to the insertion direction of the male connector 60 and the female connector 50.

[0096] In some embodiments, the baffle 416 can be driven by the male connector 60. During insertion, the male connector 60 applies a force to the action portion 4162 of the baffle 416, causing the action portion 4162 to move in the first groove and rotate around the movable connecting element 415, causing the main body portion 4161 to flip open the opening 413, thereby allowing the male connector 60 to enter and contact the first conductive portion 42 to achieve electrical connection; when the male connector 60 is pulled out, the force disappears, and the main body portion 4161 closes the opening 413 again.

[0097] The width of the first groove 421 is slightly larger than the width of the action part 4162, so as to allow the action part 4162 to rotate freely and to limit the action part 4162 to prevent the movement direction from deviating.

[0098] The first groove 421 provides the space required for the movement of the action part 4162, avoiding interference. At the same time, it provides a limit for the movement of the action part 4162, preventing it from deviating during movement and improving the structural stability and protection reliability of the female connection end 50.

[0099] According to some embodiments of this application, the drive element 417 is a torsion spring or a return spring.

[0100] In this embodiment, when the male connector 60 is pulled out and the constraint on the shield 414 is released, the driving element 417 releases its stored elastic potential energy and automatically drives the shield 414 to move to the position of closing the opening 413.

[0101] Torsion springs or return springs can be made of materials such as stainless steel or piano wire.

[0102] In this embodiment, setting the driving element 417 as a torsion spring or a return spring can ensure that when the male connection end 60 is disconnected, the baffle 416 automatically resets to cover the opening 413, thereby improving the reliability of the protection.

[0103] According to some embodiments of this application, the female connector 50 further includes a first mounting portion 51, which passes through the first housing 411. The first mounting portion 51 includes a first mounting ear 52 protruding from the surface of the first housing 411, and the first mounting ear 52 is used for fixed connection with the male connector 60.

[0104] The number of first mounting ears 52 can be two, and they extend from both sides of the first housing 411 respectively. The first mounting part 51 may also include a portion located in the receiving cavity and connecting the two first mounting ears 52, and the first conductive part 42 may be fixedly connected to the portion of the first mounting part 51 located in the receiving cavity.

[0105] The first mounting part 51 can be a single piece or assembled from several sub-mounting parts. The portion of the first mounting part 51 that protrudes from the surface of the first housing 411 serves as the first mounting ear 52. The first mounting ear 52 can be fixedly connected to the male connector 60 via a detachable connection method such as snap-fit ​​or fastener connection. The first mounting ear 52 can be in the shape of a cuboid, a semi-cylindrical shape, a hemisphere, etc.

[0106] Please see Figure 7 In this embodiment, the female connector 50 is connected to the male connector 60 through the first mounting ear 52 of the first mounting part 51, which can separate the mounting interface from the outer shell, making installation more convenient.

[0107] According to some embodiments of this application, the first housing 411 further includes two second grooves 53 disposed opposite each other along the insertion direction perpendicular to the female connector 50, the extension direction of the second grooves 53 being parallel to the insertion direction of the female connector 50. Each second groove 53 includes a first groove segment 531 communicating with an opening 413, and a second groove segment 532 communicating with the end of the first groove segment 531 away from the opening 413. The width of the first groove segment 531 perpendicular to its extension direction is smaller than the width of the second groove segment 532. A first mounting portion 51 is disposed in the second groove segment 532, and a first mounting ear 52 extends outward from the second groove segment 532.

[0108] Please see Figure 5 and Figure 6 In this embodiment, since the first mounting part 51 passes through the first housing 411, two second grooves 53 are provided on the left and right sides of the first housing 411 to allow the first mounting part 51 to pass through. The first mounting part 51 is generally perpendicular to the insertion direction, and the two second grooves 53 are arranged opposite each other in a direction perpendicular to the insertion direction. The extension direction of the second grooves 53 matches the width direction of the first mounting part 51.

[0109] The second groove 53 specifically includes a first groove segment 531 and a second groove segment 532 that are connected. Since the first groove segment 531 is connected to the opening 413, the second groove segment 532 is indirectly connected to the opening 413 through the first groove segment 531. The first mounting part 51 is specifically arranged in the second groove segment 532. Therefore, the groove width of the second groove segment 532 is greater than that of the first groove segment 531. Specifically, the groove width of the first groove segment 531 along the height direction of the first housing 411 is smaller than the groove width of the second groove segment 532. In this way, the first mounting ear 52 can be snapped into the second groove segment 532, while leaving enough space to allow the male connector 60 to be inserted.

[0110] In some embodiments, when the female connector 50 and the male connector 60 are connected, the portion of the male connector 60 used to connect with the first mounting ear 52 will first pass through the first groove 531, enter the second groove 532, and then be fixedly installed with the first mounting part 51.

[0111] In this embodiment, the second groove 53 with a different width can provide a limit for the first mounting part 51, and at the same time provide space for the connecting parts of the male connection end 60, so as to achieve a better installation and positioning effect.

[0112] According to some embodiments of this application, the first mounting portion 51 further includes a first mounting body 54 connected to the first mounting ear 52 and disposed within the receiving cavity 412. The first mounting body 54 has a recessed area 55, and the first conductive portion 42 is disposed in the recessed area 55.

[0113] The first mounting ear 52 and the first mounting body 54 can be integrally constructed or connected by other connecting components. The first mounting body 54 is located inside the receiving cavity 412. The recessed area 55 can be one or more recesses formed on the surface of the first mounting body 54, or it can be a groove formed by direct pressing or other pressing processes during processing. The recessed area 55 is used to accommodate the first conductive part 42, which can be fixed by bonding, snap-fitting, or other connection methods.

[0114] In some embodiments, the first mounting portion 51 may be an integrally formed U-shaped structure with protruding first mounting ears 52 on both sides and a recessed first mounting body 54 in the middle. The recessed position can be used to arrange the first conductive portion 42. The lower surface of the first conductive portion 42 is fixedly connected to the first mounting body 54, and the upper surface is exposed for contact with the conductive portion in the male connector 60 to achieve electrical connection. When the first mounting ears 52 are connected to the mounting component of the male connector 60, for example by tightening with bolts, the first mounting body 54 also applies a force to the first conductive portion 42, thereby making it in close contact with the conductive portion of the male connector 60.

[0115] In this embodiment, the recessed area 55 provides a physical limit for the first conductive part 42, which can quickly and accurately install the conductive part during assembly and avoid displacement. During use, the recessed area 55 can effectively limit the circumferential and radial displacement of the first conductive part 42, prevent the electrical contact position from shifting and the mechanical connection from deviating due to the displacement of the conductive part, and realize the relative fixation of the conductive part and the mechanical connection structure, thereby improving the reliability of the electrical connection.

[0116] According to some embodiments of this application, the surface of the first conductive portion 42 facing away from the recessed area 55 is flush with the mounting surface of the first mounting ear 52 connecting to the male connector 60.

[0117] like Figure 6 As shown, the first conductive part 42 is disposed in the recessed area 55, and its lower surface is in contact with the surface of the recessed area 55. The upper surface of the first mounting ear 52 is aligned with the mounting part of the male connector 60. The surface of the first conductive part 42 facing away from the recessed area 55 is the upper surface of the first conductive part 42, which is the electrical connection surface of the female connector 50 and is flush with the mechanical mounting surface of the female connector 50, that is, the upper surface of the first mounting ear 52.

[0118] After the first conductive part 42 and the first mounting part 51 are installed, the electrical connection surface and the mechanical connection surface of the female connection end 50 are on the same plane. In this way, the clamping force generated by the mechanical connection structure can also be applied between the conductive parts, which is converted into electrical contact pressure and enhances the contact reliability.

[0119] In this embodiment, the coplanar design of the electrical and mechanical connections makes the mating of the male and female connection ends a simple planar fit assembly, eliminating the need for additional high and low position calibration of the conductive parts, reducing the difficulty of assembly operations. The mechanical connection locking force (such as bolt tightening force, buckle tightening force) of the male and female connection ends will directly act on the electrical connection area on the same plane, forming a continuous and stable electrical contact pressure, effectively preventing contact loosening caused by vibration, impact, thermal expansion and contraction, improving the reliability of the connection, and also helping to reduce contact resistance.

[0120] According to some embodiments of this application, the connection terminals of the third connecting segment 33 for connecting to the first connecting segment 31 and the second connecting segment 32 for connecting to the third connecting segment 33 are both male connection terminals 60. The male connection terminal 60 includes a second conductive portion 61 and a second housing 62. The second conductive portion 61 is used for electrical connection with the first conductive portion 42. The second housing 62 is provided with an actuating portion 621, which is used to drive the protective portion 41 to move to expose the first conductive portion 42 when connected to the female connection terminal 50.

[0121] The third connecting segment 33, for connecting to the first connecting segment, and the second connecting segment, for connecting to the third connecting segment, both have male connecting terminals 60, which are respectively inserted into the receiving cavity 412 of the corresponding female connecting terminal 50 to achieve electrical connection. The second conductive part 61 can adopt the same arrangement and material as the first conductive part 42. When the male connecting terminal 60 and the female connecting terminal 50 are connected, the first conductive part 42 and the second conductive part 61 are at least partially in contact with each other to achieve electrical connection.

[0122] The second housing 62 may be made of insulating material, and an actuating part 621 is provided on the inner or outer surface of the second housing 62. When the male connector 60 and the female connector 50 are connected, the actuating part 621 first comes into contact with the protective part 41. As the male connector 60 gradually extends in, the actuating part 621 pushes the protective part 41, exposing the first conductive part 42 that was previously closed, thereby allowing the first conductive part 42 to come into contact with the second conductive part 61 to achieve an electrical connection.

[0123] In this embodiment, the structure of the drive protection part 41 is set on the second housing 62 of the male connection end 60, so that the opening and closing action of the protection part 41 is combined with the insertion action of the male connection end 60 and the female connection end 50, which simplifies the connection operation process and improves the assembly efficiency. At the same time, it can also effectively prevent the protection part 41 from being opened in the non-connected state, which would lead to unnecessary exposure of the first conductive part with high voltage, and improve the reliability of isolation protection.

[0124] According to some embodiments of this application, such as Figure 9 As shown, the second housing 62 includes a first wall 63 spaced apart from the second conductive portion 61. The gap between the first wall 63 and the second conductive portion 61 is used to accommodate the first conductive portion 42 of the female connector 50 during insertion. An actuating portion 621 protrudes from the surface of the first wall 63 facing the second conductive portion 61.

[0125] like Figure 8 and Figure 9 As shown, the second housing 62 may partially surround the periphery of the second conductive part 61, and the wall of the second housing 62 arranged opposite to the second conductive part 61 is the first wall 63. There is a gap between the first wall 63 and the first conductive part 42. When the male connector 60 and the female connector 50 are connected, the gap between them is used to accommodate the first conductive part 42 of the female connector 50. At this time, the first conductive part 42 is located between the first wall 63 and the second conductive part 61, and is at least partially electrically connected to the second conductive part 61.

[0126] The actuating part 621 protrudes from the surface of the first wall 63. For example, along the insertion direction, the actuating part 621 can extend outward relative to the second conductive part 61. This allows it to contact the protective part 41 of the female connection end 50 first during insertion, driving the protective part 41 to open the opening 413, exposing the first conductive part 42, so that the second conductive part 61 can subsequently contact the first conductive part 42 through the opening 413.

[0127] In this embodiment, the actuator 621 is disposed on the inner surface of the second housing 62 facing the second conductive part 61, which is beneficial to control the overall external dimensions and can avoid interference between the actuator 621 and other components, thus simplifying the housing structure of the male connector 60.

[0128] According to some embodiments of this application, the actuating part 621 is a protrusion 622 parallel to the direction in which the male connector 60 and the female connector 50 are inserted.

[0129] Please see Figures 8 to 9 The actuator 621 is constructed as a rib-shaped protrusion extending in the direction of insertion between the male connector 60 and the female connector 50. In this way, as long as the male connector 60 is still partially inserted and overlapped with the female connector 50, the actuator 621 can continuously apply force to keep the opening 413 open.

[0130] When the male connector 60 is inserted into the female connector 50, the actuator 621 moves along the insertion direction with the second housing 62, thereby driving the action part 4162 of the protective part 41 to move in the first groove, causing the main body 4161 to flip and open the opening 413; when the male connector 60 is withdrawn, the actuator 621 will also disappear as the second housing 62 is completely separated from the female connector 50, and the force applied by the actuator 621 will disappear, and the main body 4161 will rotate to close the opening 413 again.

[0131] In some examples, the actuator 621 can be integrally formed with the housing, simplifying the structure of the second housing 62.

[0132] In this embodiment, the actuating part 621 is constructed as a continuous protrusion 622 along the insertion direction, so that it can continuously act with the protective part 41 of the female connection end 50 during the insertion movement, thereby keeping the opening 413 of the female connection end 50 in an open state to facilitate connection and improve connection efficiency.

[0133] According to some embodiments of this application, the male connector 60 further includes a second mounting portion 64, including a second mounting body 641 fixedly connected to the second conductive portion 61, and a second mounting ear 642 connected to the second mounting body 641 and extending out of the second housing 62, the second mounting ear 642 being used for fixed connection with the female connector 50.

[0134] Please see Figures 8 to 9The male connector 60 is fixedly connected to the female connector 50 via the second mounting ear 642 of the second mounting part 64. The second mounting body 641 and the second mounting ear 642 of the second mounting part 64 can be integrally constructed or formed by splicing different materials. A second conductive part 61 is fixed on the second mounting body 641. There can be two second mounting ears 642, which are located at both ends of the second mounting body 641 and extend from both sides of the second housing 62. When the male connector 60 and the female connector 50 are connected to each other, the second mounting ear 642 is fixed to the fixing part of the female connector 50, realizing a stable and reliable connection between the two.

[0135] In some embodiments, the second mounting ear 642 and the first mounting ear 52 may be fixedly connected by fasteners.

[0136] In this embodiment, by providing an installation structure on the male connector 60 that is compatible with the installation components of the female connector 50, the installation and positioning difficulty during insertion can be simplified, and the reliability and stability of the connection can be improved.

[0137] According to some embodiments of this application, the second mounting body 641 includes a second recessed area 643, a second conductive part 61 is disposed in the second recessed area 643, and the surface of the second conductive part 61 facing away from the second recessed area 643 is flush with the mounting surface of the second mounting ear 642 for connecting the female connection end 50.

[0138] In this embodiment, the second recessed area 643 may be one or more recesses arranged on the surface of the second mounting body 641, or it may be a groove formed by direct pressing or other pressing processes during processing. The second recessed area 643 is used to accommodate the second conductive part 61, which can be fixed by snap-fitting, bonding, welding or other connection methods.

[0139] In some embodiments, the recessed direction of the second recessed region 643 is opposite to the recessed direction of the first recessed region 55. When connected, the second conductive part 61 and the first conductive part 42 are stacked vertically and located between the first mounting body 54 and the second mounting body 641.

[0140] The surface of the second conductive part 61 facing away from the recessed area 55 is the electrical connection surface, and the surface of the second mounting ear 642 facing the first mounting ear 52 is the mechanical mounting surface. The two surfaces being flush means that they are in the same plane.

[0141] In this embodiment, the above-mentioned settings can simplify the docking positioning during insertion, improve the efficiency and reliability of the connection, and help reduce the contact resistance between the male connection end 60 and the female connection end 50.

[0142] According to some embodiments of this application, the battery cell 11 includes a positive terminal and a negative terminal, the junction box 40 includes a positive terminal and a negative terminal, and a connection component 30 is provided between the positive terminal and the positive terminal and between the negative terminal and the negative terminal.

[0143] In this embodiment, the positive terminal of the battery cell 11 is connected to the positive terminal of the junction box 40 through the connecting component 30, and the negative terminal of the battery cell 11 is connected to the negative terminal of the junction box 40 through the connecting component 30. That is, both the positive and negative terminals of the battery cell 11 are provided with connecting components 30, and each connecting component 30 includes a first connecting segment 31, a second connecting segment 32 and a third connecting segment 33.

[0144] In this embodiment, a connecting component 30 is arranged at both the positive and negative terminals of the battery cell 11, and high voltage protection is provided at both the positive and negative terminals of the battery to reduce the risk of accidental electric shock to the operator when the high voltage is disconnected and to improve the protection level of the battery device.

[0145] This application provides an electrical device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to provide electrical energy.

[0146] Electrical devices include vehicles (such as cars, electric vehicles, ships, spacecraft, etc.), display devices (such as mobile phones, tablets, laptops, etc.), electric toys, power tools, etc.

[0147] It is understood that the electrical device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0148] This application provides an energy storage device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to store electrical energy.

[0149] Energy storage devices can include, but are not limited to, centralized energy storage devices (such as containerized energy storage devices), distributed energy storage devices, mobile energy storage devices, wearable energy storage devices, and so on.

[0150] It is understood that the energy storage device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0151] The present application will be further described below with reference to a specific embodiment.

[0152] This embodiment provides a battery device 100, which includes a battery cell 11, a junction box 40, and a connection assembly 30.

[0153] The connection assembly 30 is used to electrically connect the battery cell 11 and the junction box 40. The connection assembly 30 includes a first connection segment 31 electrically connected to the battery cell 11, a second connection segment 32 electrically connected to the junction box 40, and a third connection segment 33 electrically connected to the first connection segment 31 and the second connection segment 32. The connection terminals of the first connection segment 31 for connecting to the third connection segment and the connection terminals of the third connection segment 33 for connecting to the second connection segment 32 are both female connection terminals 50. The female connection terminal 50 includes a first conductive part 42 for electrical connection and a protective part 41. The protective part 41 is configured to shield the first conductive part 42 after the female connection terminal 50 is disconnected from the corresponding male connection terminal 60.

[0154] The connection assembly 30 is used to electrically connect the battery cell 11 and the junction box 40. The connection assembly 30 includes a first connection segment 31 electrically connected to the battery cell 11, a second connection segment 32 electrically connected to the junction box 40, and a third connection segment 33 electrically connecting the first connection segment 31 and the second connection segment 32. The connection terminals of the first connection segment 31 for connecting to the third connection segment 33 and the connection terminals of the third connection segment 33 for connecting to the second connection segment 32 are both female connection terminals 50. The female connection terminal 50 includes a first conductive part 42 for electrical connection and a protective part 41. The protective part 41 is configured to shield the first conductive part 42 after the female connection terminal 50 is disconnected from the corresponding male connection terminal 60.

[0155] The protective part 41 includes a first housing 411 and a shield 414. The first housing 411 includes a receiving cavity 412 with an opening 413, a conductive part is disposed in the receiving cavity 412 and is connected to the male connector 60 through the opening 413. The shield 414 is movably connected to the first housing 411, and the shield 414 is configured to keep the opening 413 open when connected to the male connector 60, and to close the opening 413 after disconnection from the male connector 60.

[0156] The shield 414 includes a movable connecting element 415, a baffle 416, and a driving element 417. The baffle 416 is movably connected to the first housing 411 via the movable connecting element 415. The driving element 417 is connected to the baffle 416 and configured to drive the baffle 416 to close the opening 413 after it is disconnected from the male connecting end 60. The baffle 416 includes a main body portion 4161 and an actuating portion 4162. The main body portion 4161 is used to close the opening 413. The actuating portion 4162 is connected to the main body portion 4161 and is configured to receive an external force and drive the main body portion 4161 to move to open the opening 413. The actuating portion 4162 is at least partially located on both sides of the movable connecting element 415, and rotates about the center of the movable connecting element 415 when subjected to an external force.

[0157] The first housing 411 is provided with a first groove 421 communicating with the opening 413. The extension direction of the first groove 421 is parallel to the insertion direction of the female connection end 50. The first groove 421 is used to accommodate the action part 4162 and allows the action part 4162 to move in the first groove 421 after being subjected to force.

[0158] The female connector 50 also includes a first mounting portion 51, which passes through the first housing 411. The first mounting portion 51 includes a first mounting ear 52 protruding from the surface of the first housing 411, which is used for fixed connection with the male connector 60. The first housing 411 also includes two second grooves 53 arranged opposite each other along the insertion direction perpendicular to the female connector 50. The extension direction of the second grooves 53 is parallel to the insertion direction of the female connector 50. The second groove 53 includes a first groove segment 531 communicating with the opening 413, and a second groove segment 532 communicating with the end of the first groove segment 531 away from the opening 413. The groove width of the first groove segment 531 perpendicular to the extension direction is smaller than the groove width of the second groove segment 532. The first mounting portion 51 is disposed in the second groove segment 532, and the first mounting ear 52 extends outward from the second groove segment 532.

[0159] The first mounting part 51 also includes a first mounting body 54 connected to the first mounting ear 52 and disposed in the receiving cavity 412. The first mounting body 54 has a recessed area 55, and a first conductive part 42 is disposed in the recessed area 55. The surface of the first conductive part 42 facing away from the recessed area 55 is flush with the mounting surface of the male connector 60 of the first mounting ear 52.

[0160] The connecting terminals of the third connecting segment 33 and the second connecting segment 32, which are connected to the third connecting segment 33, are both male connecting terminals 60. Each male connecting terminal 60 includes a second conductive portion 61 and a second housing 62. The second conductive portion 61 is electrically connected to the first conductive portion 42. The second housing 62 is provided with an actuating portion 621, which drives the protective portion 41 to move and expose the first conductive portion 42 when connected to the female connecting terminal 50. The second housing 62 includes a first wall 63 spaced apart from the second conductive portion 61. The gap between the first wall 63 and the second conductive portion 61 is used to accommodate the first conductive portion 42 of the female connecting terminal 50 during insertion. The actuating portion 621 protrudes from the surface of the first wall 63 facing the second conductive portion 61.

[0161] The male connector 60 also includes a second mounting portion 64, which includes a second mounting body 641 fixedly connected to the second conductive portion 61, and a second mounting ear 642 connected to the second mounting body 641 and extending out of the second housing 62. The second mounting ear 642 is used to fixally connect to the female connector 50. The second mounting body 641 includes a second recessed area 643, the second conductive portion 61 is disposed in the second recessed area 643, and the surface of the second conductive portion 61 facing away from the second recessed area 643 is flush with the mounting surface of the second mounting ear 642 for connecting to the female connector 50.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell; Junction box; as well as A connection assembly for electrically connecting the battery cell and the junction box; The connection assembly includes a first connection segment electrically connected to the battery cell, a second connection segment electrically connected to the junction box, and a third connection segment electrically connected to the first connection segment and the second connection segment; Both the connection terminal of the first connecting segment used for connecting to the third connecting segment and the connection terminal of the third connecting segment used for connecting to the second connecting segment are female connection terminals. The female connector includes a first conductive part for electrical connection and a protective part, wherein the protective part is configured to shield the first conductive part after the electrical connection between the female connector and the corresponding male connector is disconnected.

2. The battery device according to claim 1, characterized in that, The protective part includes: The first housing includes a receiving cavity with an opening, and the first conductive part is disposed in the receiving cavity and connected to the male connection terminal through the opening; A shielding member, movably connected to the first housing, is configured to keep the opening open when connected to the male connector and to close the opening after disconnection from the male connector.

3. The battery device according to claim 2, characterized in that, The shielding component includes: Active connecting element, The baffle is movably connected to the first housing via the movable connecting element, and A driving element, connected to the baffle, is configured to drive the baffle to close the opening after it is disconnected from the male connection end.

4. The battery device according to claim 3, characterized in that, The baffle includes: The main body portion is used to close the opening; and The actuating part is connected to the main body and is configured to receive external force and drive the main body to move to open the opening.

5. The battery device according to claim 4, characterized in that, The actuating part is located at least partially on both sides of the movable connecting element, and rotates about the center of the movable connecting element when subjected to an external force.

6. The battery device according to claim 5, characterized in that, The first housing is provided with a first groove communicating with the opening, and the extension direction of the first groove is parallel to the insertion direction of the female connection end; the first groove is used to accommodate the action part and allow the action part to move in the first groove after being subjected to force.

7. The battery device according to claim 3, characterized in that, The driving element is a torsion spring or a return spring.

8. The battery device according to claim 2, characterized in that, The female connector also includes: A first mounting portion is disposed within the first housing. The first mounting portion includes a first mounting ear protruding from the surface of the first housing. The first mounting ear is used for fixed connection with the male connector end.

9. The battery device according to claim 8, characterized in that, The first housing further includes two second slots arranged opposite each other along the insertion direction perpendicular to the female connector end, and the extension direction of the second slots is parallel to the insertion direction of the female connector end; The second groove includes a first groove segment communicating with the opening, and a second groove segment communicating with the end of the first groove segment away from the opening, wherein the groove width of the first groove segment perpendicular to the extension direction is smaller than the groove width of the second groove segment; The first mounting part is disposed in the second groove section, and the first mounting ear extends outward from the second groove section.

10. The battery device according to claim 9, characterized in that, The first mounting portion further includes a first mounting body connected to the first mounting ear and disposed within the receiving cavity; The first mounting body has a recessed area, and the first conductive part is disposed in the recessed area.

11. The battery device according to claim 10, characterized in that, The surface of the first conductive part facing away from the recessed area is flush with the mounting surface of the first mounting ear that connects to the male connector.

12. The battery device according to any one of claims 1-11, characterized in that, The connection terminals of the third connection segment used to connect with the first connection segment and the connection terminals of the second connection segment used to connect with the third connection segment are both male connection terminals; The public connection includes: A second conductive portion is used for electrical connection with the first conductive portion; and The second housing is provided with an actuation part, which is used to drive the protective part to move to expose the first conductive part when connected to the female connection end.

13. The battery device according to claim 12, characterized in that, The second housing includes a first wall spaced apart from the second conductive portion, and the gap between the first wall and the second conductive portion is used to accommodate the first conductive portion of the female connector end during insertion; The actuating part protrudes from the surface of the first wall facing the second conductive part.

14. The battery device according to claim 13, characterized in that, The actuating part is a protrusion parallel to the direction in which the male connector and the female connector are inserted.

15. The battery device according to claim 12, characterized in that, The public connection also includes: The second mounting portion includes a second mounting body fixedly connected to the second conductive portion, and a second mounting ear connected to the second mounting body and extending out of the second housing, the second mounting ear being used for fixed connection to the female connection end.

16. The battery device according to claim 15, characterized in that, The second mounting body includes: The second recessed area, the second conductive part is disposed in the second recessed area, and the surface of the second conductive part facing away from the second recessed area is flush with the mounting surface of the second mounting ear for connecting the female connection end.

17. The battery device according to any one of claims 1-11, characterized in that, The battery cell includes: The junction box includes a positive terminal and a negative terminal. The connecting component is provided between the positive terminal and the positive connection terminal, and between the negative terminal and the negative connection terminal.

18. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-17, the battery device being used to provide electrical energy.

19. An energy storage device, characterized in that, Includes a battery device as described in any one of claims 1-17, the battery device being used to store electrical energy.

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