Battery device and electric device

Abstract

The utility model is suitable for the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a battery monomer group, a connector, an electric connecting piece and an insulating piece, the battery monomer group is provided with an output electrode, the connector comprises a main body structure and a contact piece arranged on the main body structure, the contact piece is a part, electrically connected with an external load, in the connector, and a plurality of output electrodes and a plurality of contact pieces are arranged. The at least two contact pieces are electrically connected with the corresponding output electrodes through the electric connecting pieces, and the electric connecting pieces and the contact pieces are connected through the fastening assemblies to form a combined connecting piece; the insulating part is arranged on at least one fastening assembly in a sleeving mode, and the at least two combined connecting pieces are electrically isolated through the insulating part. According to the battery device and the power utilization device provided by the invention, the insulation protection effect of the battery device can be improved to a certain extent.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a battery device and an electrical device. Background Art

[0002] Battery devices require connectors to transmit power to motors, circuit boards, or other loads. Insulation protection in connectors, especially high-voltage connectors, is a critical design element to ensure safe system operation and prevent electrical failures and personal injury. Current connector insulation needs to be improved. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, aiming to improve the insulation protection effect of the connector in the battery device.

[0004] In the first aspect, an embodiment of the present application provides a battery device, comprising a battery cell group, a connector, an electrical connector and an insulating member, the battery cell group having an output pole, the connector comprising a main structure and a contact member provided on the main structure, the contact member being a component in the connector electrically connected to an external load, multiple output poles and multiple contacts are provided, at least two contacts are electrically connected to corresponding output poles through the electrical connector, the corresponding electrical connectors and contacts are connected through a fastening assembly, and the three form a combined connector; the insulating member is sleeved on at least one fastening assembly, and at least two of the combined connectors are electrically isolated by the insulating member.

[0005] In the battery device provided in the embodiment of the present application, the contact members in the connector are connected to the battery cell group through a fastening assembly and an electrical connector, and an insulating member is sleeved on the fastening assembly. The provision of the insulating member can achieve electrical isolation of at least two adjacent combined connectors (a combined structure formed by the contact member, the fastening assembly and the electrical connector), thereby effectively improving the problems of insufficient creepage distance and electrical clearance of the high-voltage interface, and can improve the insulation protection effect of the battery device to a certain extent.

[0006] In a possible implementation of the first aspect, the fastening assembly includes a first fastener and a second fastener that are fastened together, one of the first fastener and the second fastener is a target fastener, the target fastener is fixedly connected to the contact member, and the insulating member is sleeved outside at least a portion of the structure of the target fastener.

[0007] Because at least a portion of the fastening assembly protrudes beyond the contact element or electrical connector, the spacing between adjacent modular connectors is narrower at the location of the fastening assembly. This can easily lead to electrical connection between the two modular connectors, i.e., high-voltage sparking. During use, an insulating member can be positioned outside the area where one or more fastening assemblies are likely to electrically connect with adjacent modular connectors, thereby electrically isolating the adjacent modular connectors.

[0008] In a possible implementation of the first aspect, in a first direction, a size of the target fastener is smaller than a size of the contact member, and the first direction is perpendicular to a stacking direction of the contact member and the electrical connector.

[0009] This can increase the contact area between the contact piece and the target fastener, making the connection between the two more stable.

[0010] In a possible implementation of the first aspect, the insulating member includes a first part, a second part, and a third part connected in sequence along the stacking direction, the first part is arranged around at least part of the contact member and forms a first cavity; the second part is arranged around at least part of the target fastener and forms a second cavity, and the second cavity is connected to the first cavity; the second part has an opening facing away from the first part, the opening is connected to the second cavity, and the third part covers the opening.

[0011] The insulating part adopts the structure provided in this embodiment, and its shape can be adapted to the shape of the covering part of the insulating part (the part of the contact part and the part of the fastening assembly), so that the insulating part can be smaller in size, occupy less space, be easier to install, and not easily affect the settings of other structures in the connector after installation.

[0012] In a possible implementation of the first aspect, the inner circumferential wall of the second portion is interference fit with the outer circumferential wall of the target fastener.

[0013] The second part has an interference fit with the outer wall of the target fastener, so that the second part can be sleeved on the outer wall of the target fastener by applying external force or heating / cooling, and is tightly connected to the target fastener by elastic deformation, which is convenient for installation. It can also make the insulating part have higher installation stability under mechanical working conditions, making the battery device safer.

[0014] In a possible implementation of the first aspect, a portion of the first part protrudes from the second part along the second direction to form a first convex portion, and the first convex portion is provided with a clamping structure for clamping the contact piece, and the second direction is perpendicular to the stacking direction of the contact piece and the electrical connector.

[0015] The setting of the clamping structure can cooperate with the interference fit structure to fix the relative positions of the insulating part, the contact part and the combined connecting part, reduce the risk of the insulating part falling off the target fastener, and stabilize the performance of the battery device.

[0016] In a possible implementation of the first aspect, the clamping structure includes two groups of clamping plates arranged opposite to each other along a first direction; the two groups of clamping plates cooperate with each other to clamp the contact piece, and the first direction is perpendicular to the second direction.

[0017] Each set of splints can include one or more splints. The number of splints in each set can be the same or different. The structure and shape of each splint can be the same or different, depending on the specific needs. The clamping structure adopts the solution provided in this embodiment, which is simple in structure and easy to design and assemble.

[0018] In a possible implementation manner of the first aspect, the first fastener is a target fastener, and the first fastener is a nut.

[0019] The nut is fixedly connected to the contact piece as a target fastener, so that when the electrical connector is connected to the contact piece, it can be achieved directly by rotating the second fastener with a thread, which is easy to operate.

[0020] In a possible implementation of the first aspect, the third part has a receiving cavity, which is connected to the first cavity through the second cavity, and the receiving cavity is used to receive at least a portion of the second fastener.

[0021] In this way, the installation and selection of the second fastener are less restricted by the insulating component, making it easier to obtain materials and install.

[0022] In a possible implementation of the first aspect, the insulating member is detachably connected to the fastening assembly. The solution provided in this embodiment facilitates replacement and maintenance of the insulating member.

[0023] In a possible implementation of the first aspect, the insulating member is detachably connected to the contact member via the fixing member.

[0024] The solution provided in this embodiment facilitates the detachable connection between the insulating member and the contact member by means of a tool (fixing member), which facilitates design and operation.

[0025] In a possible implementation of the first aspect, at least an outer surface of the fixing member is an insulating surface.

[0026] This arrangement can reduce the risk of the introduction of the fixing member adversely affecting the electrical connection performance of the connector itself.

[0027] In a possible implementation of the first aspect, the insulating member is provided with a limiting structure, and the limiting structure is used to limit the relative position of the fixing member and the insulating member.

[0028] The setting of the limiting structure can ensure that the positions of the fixing member and the insulating member are relatively fixed after the insulating member is installed, and the fixing member is not easily separated from the insulating member, thereby fixing the limited position of the insulating member and the main structure, making the performance of the battery device stable.

[0029] In a possible implementation of the first aspect, the limiting structure includes a second protrusion protruding from the outer surface of the insulating part, and the second protrusion is provided with a through hole arranged along a first direction, and the through hole is used for allowing the fixing part to pass through; the first direction is perpendicular to the stacking direction of the contact part and the electrical connector.

[0030] The limiting structure adopts the second protrusion with a through hole, which facilitates the installation and positioning of the fixing member and makes it difficult for the fixing member to fall out of the limiting structure, thereby facilitating the performance of the battery device to be stable.

[0031] In one possible implementation of the first aspect, the fixing member is loosely fitted with the inner wall of the through-hole. This facilitates the fixing member's insertion through the through-hole during installation, and allows a portion of the fixing member located within the through-hole to move relative to the second protrusion to a certain extent after installation, thereby facilitating assembly and adjusting the relative position of the fixing member as needed after installation.

[0032] In a possible implementation of the first aspect, a plurality of second protrusions are provided, and the plurality of second protrusions are spaced apart along the first direction.

[0033] The cooperation of the multiple second protrusions can better define the relative position of the insulating component and the fixing component, and can reduce the force on a single second protrusion, thereby reducing the risk of damage to the single second protrusion.

[0034] In one possible implementation of the first aspect, the fixing member includes a cable tie. The fixing member includes a cable tie, which has the advantages of convenient installation, high efficiency, low cost, and good economy. The use of the cable tie increases the freedom of disassembly of the insulating member and has strong versatility.

[0035] In a possible implementation of the first aspect, the insulating member is an integrally formed structural member. The insulating member is manufactured through an integral molding process, such as injection molding or stamping, which ensures stable connections between the various parts of the insulating member, facilitates manufacturing, and reduces costs.

[0036] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery device provided by any of the above solutions.

[0037] The effect of the second aspect is the same as that of the first aspect and will not be described in detail here.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0040] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0041] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0042] Figure 3 A schematic diagram of a three-dimensional structure of a partial structure of a battery device provided in some embodiments of the present application;

[0043] Figure 4 A schematic diagram of a three-dimensional structure of a partial structure of a battery device provided in some embodiments of the present application from another perspective;

[0044] Figure 5 For the Figure 3 A schematic cross-sectional view of the structure along line AA, wherein some structures of the main structure are not shown;

[0045] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at C in the middle;

[0046] Figure 7 A schematic diagram of the three-dimensional structure of an insulating member in a battery device provided in some embodiments of the present application;

[0047] Figure 8 for Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0048] The accompanying drawings in the specific implementation manner are as follows:

[0049] 1000. Vehicle;

[0050] 100, battery device; 200, controller; 300, motor;

[0051] 10. Box; 11. Cover; 12. Tray; 20. Battery cell; 30. Battery cell group; 31. Output pole; 40. Connector; 41. Main structure; 42. Contact member; 50. Fastening assembly; 51. First fastener; 52. Second fastener; 60. Electrical connector; 70. Insulator; 71. First portion; 71a. First cavity; 71b. First protrusion; 72. Second portion; 72a. Second cavity; 73. Third portion; 73a. Accommodating cavity; 74. Clamping structure; 74a. Clamping plate; 75. Limiting structure; 80. Fixing member;

[0052] 411. First surface; 751. Second convex portion; 752. Through hole;

[0053] X, stacking direction; Y, first direction; Z, second direction. DETAILED DESCRIPTION

[0054] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0056] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0057] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0059] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0060] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0061] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0062] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0063] Whether it's an electric vehicle, energy storage system, or consumer electronic device, battery devices require connectors to transmit power to motors, circuit boards, or other loads. Insulation protection in connectors, especially high-voltage connectors, is a critical design element to ensure safe system operation and prevent electrical faults and personal injury.

[0064] Common connector insulation protection solutions generally use a baffle fixed between the positive and negative locking points. This structure is often integrated with the connector, with a complex production process. If damaged, it cannot be freely replaced and the entire connector needs to be replaced.

[0065] To address the aforementioned issues, embodiments of the present application provide a battery device. This device incorporates an insulating member within the connector, sleeved over the exterior of the fastening assembly. This insulating member electrically isolates at least two adjacent connectors, effectively alleviating the issue of insufficient creepage distance and clearance at the high-voltage interface and, to a certain extent, enhancing the insulation protection of the battery device.

[0066] The battery device disclosed in the embodiments of the present application can be used in electrical devices that use the battery device as a power source or various energy storage devices, energy storage systems, and charging networks that use the battery device as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0067] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0068] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be provided at the bottom, head or tail 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 an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0069] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0070] Please refer to Figure 2 , Figure 2 The battery device 100 provided in some embodiments of the present application is a schematic diagram of an exploded structure. The battery device 100 includes a housing 10 and a battery cell 20 , wherein the battery cell 20 is accommodated in the housing 10 .

[0071] The housing 10 is used to provide storage space for the battery cells 20 and can have various structures. In some embodiments, the housing 10 may include a cover 11 and a tray 12. The cover 11 covers the tray and, together with the tray 12, defines a storage space for the battery cells 20. The tray 12 may be a hollow structure with one end open, and the cover 11 may be a plate-like structure. The cover 11 covers the open side of the tray 12, so that the cover 11 and tray 12 together define a storage space. Alternatively, both the cover 11 and tray 12 may be hollow structures with side openings, with the open side of the cover 11 covering the open side of the tray 12. Of course, the housing 10 formed by the cover 11 and tray 12 can have various shapes, such as a circular through-hole or a rectangular parallelepiped. The tray 12 is a critical structural component in the battery system, used to store and protect the battery cells. It also significantly impacts the collision safety of the vehicle and the torsional and bending stiffness of the vehicle body.

[0072] A battery cell 20 is the smallest unit that makes up a battery device. A battery cell 20 can be a secondary battery or a primary battery. A secondary battery is a battery cell that can be recharged to activate its active material after discharge, allowing continued use. The battery cell 20 can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, or the like, though this embodiment of the present application does not limit this. The battery cell can have a rounded through portion, a flat body, a rectangular parallelepiped, or other shapes.

[0073] Multiple battery cells 20 may be provided, connected in series, parallel, or in a hybrid configuration via a busbar assembly. A hybrid configuration refers to a combination of series and parallel connections within the battery cells 20. Multiple battery cells 20 may be directly connected in series, parallel, or in a hybrid configuration, and then the entire battery cell assembly 20 is housed within the housing 10. Alternatively, the battery assembly 100 may comprise a battery module comprising multiple battery cells 20 connected in series, parallel, or in a hybrid configuration, and then the modules are further connected in series, parallel, or in a hybrid configuration to form a single unit housed within the housing 10. The battery assembly 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20. For example, the multiple battery cells 20 may form a battery module, which is composed of multiple battery cells 20 arranged and fixed together to form a single module. For example, a battery module may be formed by binding multiple battery cells 20 together using cable ties.

[0074] Please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of a three-dimensional structure of a partial structure of a battery device provided in some embodiments of the present application. Figure 4This is a schematic diagram of a three-dimensional structure of a partial structure of a battery device provided in some embodiments of the present application from another perspective. Embodiments of the present application provide a battery device. The battery device includes a battery cell group 30, a connector 40, an electrical connector 60, and an insulating member 70. The battery cell group 30 has an output pole 31. The connector 40 includes a main structure 41 and a contact 42 provided on the main structure 41. The contact 42 is a component in the connector 40 that is electrically connected to an external load. There are multiple output poles 31 and multiple contacts 42. At least two contacts 42 are electrically connected to the corresponding output poles 31 through the electrical connector 60. The electrical connector 60 and the contact 42 are connected by a fastening assembly 50, and the three form a combined connector. The insulating member 70 is sleeved on the outside of at least one fastening assembly 50. At least two combined connectors are electrically isolated by the insulating member 70.

[0075] Output terminals 31 are the positive and negative terminals through which the battery pack 30 provides external power. The battery pack 30 typically has two output terminals 31: a positive terminal and a negative terminal. The battery pack 30 is electrically connected to the connector 40 via these output terminals 31, and then to other loads outside the battery pack via the connector 40.

[0076] The main structure 41 is the main part of the connector 40 and is used to support and fix the contact 42. It is generally made of insulating material and its shape can be set according to usage requirements.

[0077] The connector 40 in this embodiment can be a high-voltage connector or a low-voltage connector, depending on the specific usage requirements.

[0078] The contact 42 is the core component of the connector 40 that directly realizes electrical conduction. It is responsible for establishing a reliable current or signal path between the connector 40 and the electrical connector 60 and the output pole 31. The contact 42 can also be called a terminal, a pin, a conductive terminal, a metal contact, etc. The contact 42 is generally made of metal material, and can also be formed by a combination of multiple materials as long as electrical conduction can be achieved. There are at least two contacts 42, namely a positive contact and a negative contact. In addition, according to the needs of use, the contact 42 can also include a data contact, a ground contact, etc., which can be determined according to the specific needs of use.

[0079] The electrical connector 60 may be a conductive member such as a copper bar or an aluminum bar. The electrical connector 60 may be welded to the contact 42 and the output pole 31 or connected by bolts, as long as the contact 42 and the output pole 31 can be electrically connected.

[0080] Since there are at least two output poles 31 and at least two contact members 42 respectively, there are at least two electrical connectors 60 , and at least two combined connectors formed by the electrical connector 60 and the contact members 42 are also provided.

[0081] In this embodiment, the contact member 42, the electrical connector 60, and the output pole 31 can be arranged in a one-to-one correspondence, such as the contact member 42 includes a positive contact member and a negative contact member, the output pole 31 includes a positive output pole and a negative output pole, the positive contact member is electrically connected to the positive output pole through the electrical connector 60, and the negative contact member is electrically connected to the negative output pole through the electrical connector 60; the number of at least one of the contact member 42, the output pole 31 and the electrical connector 60 can also be greater than that of the other members, such as the contact member 42 is used not only for connecting to the output pole 31, but also for connecting to the ground.

[0082] At least two contacts 42 are electrically connected to the corresponding output poles 31 through the electrical connector 60 , which means that the positive contact is electrically connected to the positive output pole through at least one electrical connector 60 , and the negative contact is electrically connected to the negative output pole through at least one electrical connector 60 .

[0083] The contact member 42 generally passes through the main structure 41, with a portion protruding from the front of the main structure 41 for connection to a load outside the battery device, a portion being located inside the main structure 41, and the remaining portion protruding from the first surface 411 of the main structure 41. The portion of the contact member 42 protruding from the first surface 411 is connected to the electrical connector 60 through the fastening assembly 50. The first surface 411 is the back of the main structure 41 and is also the side that is not easily seen by the user. The fastening assembly 50 is a core component used for fixing, locking or connecting mechanical and electronic equipment, and may include bolts, nuts, screws, etc., and the specific details may be determined according to usage needs. The fastening assembly 50 in this embodiment is generally made of metal material, which is not only used to connect the contact member 42 and the electrical connector 60, but also easily conducts the current conducted by the contact member 42 and the electrical connector 60 to other places, such as adjacent contacts 42 or fastening assemblies 50.

[0084] The insulating member 70 may be a sleeve-shaped structure, a cylindrical structure, etc., and may be sleeved on a portion of the fastening assembly 50 of one or more combined connectors that is easily in contact with other combined connectors.

[0085] Sleeving is a common assembly technique. The insulating member 70 is sleeved on at least one fastening component 50, meaning that at least a portion of the at least one fastening component 50 is surrounded or nested by the insulating member 70. Sleeving the insulating member 70 on at least one fastening component 50 includes at least the following situations: first, a single insulating member 70 is sleeved over at least a portion of another fastening component 50; second, a single insulating member 70 has multiple cavities and is simultaneously sleeved over at least portions of multiple fastening components 50; and third, multiple insulating members 70 are sleeved over multiple fastening components 50. The arrangement of the insulating member 70 can be selected based on the intended use.

[0086] At least the outer surface of the insulating member 70 is made of insulating material. It can be made of insulating material as a whole, or the inside can be made of conductive material and the outside can be covered with insulating material. The specific details can be determined according to the needs of use. The insulating member 70 is used to electrically isolate adjacent combination connectors. One or more insulating members 70 can be provided, which can be determined according to the needs of use. Electrical isolation refers to blocking the direct path of current between at least two adjacent combination connectors by the provision of the insulating member 70, preventing unintended conduction, leakage or short circuit, and ensuring safety and signal integrity. Its core goal is to block the conductive path of at least two adjacent combination connectors. The conductive path is a possible conductive path if at least two adjacent combination connectors are connected to each other. The conductive path can generally be derived through experience, theory, etc. If the two adjacent combination connectors are both irregular in shape, and the distance between part A on one combination connector and part B on the other combination connector is the smallest, then the conductive path between the combination connectors is generally the connection path between part A and part B.

[0087] In the battery device provided in the embodiment of the present application, the contact member 42 in the connector 40 is connected to the battery cell group 30 through the fastening assembly 50 and the electrical connector 60, and an insulating member 70 is sleeved on the fastening assembly 50. The setting of the insulating member 70 can achieve electrical isolation of at least two adjacent combined connectors (a combined structure formed by the contact member 42, the fastening assembly 50 and the electrical connector 60), thereby effectively improving the problem of insufficient creepage distance and electrical clearance of the high-voltage interface, and can improve the insulation protection effect of the battery device to a certain extent.

[0088] Furthermore, the battery device provided in this embodiment does not require any structural changes to the connector except for the insulating member 70, significantly impacting the production line. Furthermore, because the connection structure (also known as the base structure of the locking point) between the contact member 42 and the electrical connector 60 of connectors 40 of the same series is generally the same, the connector 40 of this embodiment can be adapted to connectors with the same base structure, providing a certain degree of versatility. This can reduce the likelihood of needing to redevelop the insulating member 70 for new product development, thereby reducing development costs.

[0089] like Figures 3 to 6 As shown, in some embodiments, the fastening assembly 50 includes a first fastener 51 and a second fastener 52 that are fastened together. One of the first fastener 51 and the second fastener 52 is a target fastener. The target fastener is fixedly connected to the contact member 42. The insulating member 70 is disposed outside at least a portion of the structure of the target fastener.

[0090] The fastener assembly 50 is a core component used for fixing, locking, or connecting mechanical and electronic devices. It typically consists of a first fastener 51 and a second fastener 52 that work together to ensure structural stability and removability. The first fastener 51 can be any of a bolt, screw, threaded rod, or nut. The second fastener 52 can be determined based on the type of the first fastener 51. If the first fastener 51 is a bolt, screw, or threaded rod, the second fastener 52 can be a nut. If the first fastener 51 is a nut, the second fastener 52 can be a bolt, screw, or threaded rod.

[0091] The target fastener is fixedly connected to the contact member 42, which means that the two are relatively fixed in position after being connected. The two can be fixedly connected by plugging, welding, crimping, etc. The specific connection method can be determined according to the use requirements.

[0092] The insulating member 70 is sleeved outside at least part of the structure of the target fastener, which means that according to the specific structure and installation position of the target fastener and the use requirements of the insulating member 70, the insulating member 70 can cover the entire target fastener or only part of the target structural member.

[0093] The provision of the fastening assembly 50 can ensure a tight and stable connection between the contact 42 and the electrical connector 60. In this embodiment, the electrical connector 60 and the contact 42 connected to form a combined connector can be understood as the connected electrical connector 60, the fastening assembly 50 and the contact 42 forming a combined connector.

[0094] Because at least a portion of the fastening assembly 50 protrudes beyond the contact element 42 or the electrical connector 60, the spacing between adjacent modular connectors is narrower at the location of the fastening assembly 50. This can easily lead to electrical connection between the two modular connectors, i.e., high-voltage sparking. During use, an insulating member 70 can be positioned outside the area where one or more fastening assemblies 50 are likely to electrically connect with adjacent modular connectors, thereby electrically isolating the adjacent modular connectors.

[0095] like Figure 6 As shown, in some embodiments, the size of the target fastener is smaller than the size of the contact 42 in the first direction Y. The first direction Y is perpendicular to the stacking direction X of the contact 42 and the electrical connector 60.

[0096] The stacking direction X is generally the thickness direction of the contact 42 or the electrical connector 60 , and the first direction Y may be the length direction or the width direction of the contact 42 or the electrical connector 60 .

[0097] This can increase the contact area between the contact member 42 and the target fastener, thereby ensuring a stable connection between the two.

[0098] Figure 5 For the Figure 3 A schematic cross-sectional view of the structure along line AA, wherein some structures of the main structure are not shown; Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at C in the middle; Figure 7 A schematic diagram of the three-dimensional structure of an insulating member in a battery device provided in some embodiments of the present application.

[0099] like Figures 5 to 7 As shown, in some embodiments, the insulating member 70 includes a first portion 71, a second portion 72, and a third portion 73, which are sequentially connected along the stacking direction X. The first portion 71 surrounds at least a portion of the contact member 42 and defines a first cavity 71a. The second portion 72 surrounds at least a portion of the target fastener and defines a second cavity 72a. The second cavity 72a communicates with the first cavity 71a. The second portion 72 has an opening facing away from the first portion 71. The opening communicates with the second cavity 72a. The third portion 73 covers the opening.

[0100] The first portion 71, the second portion 72 and the third portion 73 are different components of the insulating member 70. The three portions can be formed as one piece or can be connected in separate pieces, such as by plugging, gluing or other methods.

[0101] The insulating member 70 may consist of only the first part 71 , the second part 72 and the third part 73 , or may include other structures in addition to the first part 71 , the second part 72 and the third part 73 , such as a fixing structure, a limiting structure, etc., depending on the specific needs of use.

[0102] The first portion 71 and the second portion 72 may be respectively arranged in a ring shape, an arc shape, or other shapes, depending on factors such as the shape of the contact member 42 and the target fastener, and the fixing requirements of the insulating member 70.

[0103] The third portion 73 can be a flat plate, a cylindrical structure, or any other shape, depending on the intended use. For example, if the target fastener is a nut, the third portion 73 typically has a cylindrical structure to seal the opening while accommodating at least a portion of the protruding screw, bolt, or other fastener. If the target fastener is a screw, bolt, or other fastener, the third portion 73 can have a flat plate or a slotted structure to abut against the nut of the screw, bolt, or other fastener.

[0104] The insulating member 70 adopts the structure provided in this embodiment, and its shape can be adapted to the shape of the covering portion of the insulating member 70 (the portion of the contact member 42 and the portion of the fastening assembly 50), so that the insulating member 70 can be smaller in size, occupy less space, be easier to install, and not easily affect the settings of other structures in the connector 40 after installation.

[0105] like Figure 6 As shown, in some embodiments, the inner peripheral wall of the second portion 72 is interference fit with the outer peripheral wall of the target fastener.

[0106] The inner peripheral wall of the second portion 72 is a side wall of the inner wall of the second portion 72 that is used to contact the target fastener. The outer peripheral wall of the target fastener is a side wall of the target fastener that is connected end to end.

[0107] An interference fit means that the inner circumferential wall of the second portion 72 is smaller than the outer circumferential wall of the target fastener in at least one dimension. For example, in the length direction, the inner circumferential wall of the second portion 72 is smaller than the outer circumferential wall of the target fastener; or in the width direction, the inner circumferential wall of the second portion 72 is smaller than the outer circumferential wall of the target fastener.

[0108] The second portion 72 has an interference fit with the outer wall of the target fastener, so that the second portion 72 can be sleeved on the outer wall of the target fastener by applying external force or heating / cooling, and is tightly connected to the target fastener by elastic deformation, which is convenient for installation. It can also make the insulating member 70 have higher installation stability under mechanical working conditions, making the battery device safer.

[0109] Figure 8 for Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0110] like Figure 7 and Figure 8 As shown, in some embodiments, a portion of the first portion 71 protrudes from the second portion 72 along the second direction Z to form a first protrusion 71b. The first protrusion 71b is provided with a clamping structure 74 for clamping the contact 42. The second direction Z is perpendicular to the stacking direction Z of the contact and the electrical connector.

[0111] It should be noted that the second direction Z is adapted to the extension direction of the length direction of the contact member 42 , and may be the same direction as the first direction Y, or may be set at an angle to the first direction Y, depending on the specific usage requirements.

[0112] The clamping structure 74 is a structure for clamping the contact piece 42 , and may be composed of two clamping plates 74 a or a slot structure, and the specific structure may be determined according to the use requirements.

[0113] The setting of the clamping structure 74 can cooperate with the interference fit structure to fix the relative positions of the insulating member 70, the contact member 42 and the combined connector, reduce the risk of the insulating member 70 falling off the target fastener, and stabilize the performance of the battery device.

[0114] like Figure 7As shown, in some embodiments, the clamping structure 74 includes two sets of clamping plates 74a arranged opposite to each other along a first direction Y. The two sets of clamping plates 74a cooperate with each other to clamp the contact member. The first direction Y is perpendicular to the second direction Z.

[0115] Each group of clamping plates 74a can be provided with one or more clamping plates 74a. The number of clamping plates 74a in each group of clamping plates 74a can be the same or different. The structure and shape of each clamping plate 74a can be the same or different, and can be determined according to the specific use requirements.

[0116] The clamping structure 74 adopts the solution provided in this embodiment, which has a simple structure and is easy to design and assemble.

[0117] like Figure 6 As shown, in some embodiments, the first fastener 51 is a target fastener, and the first fastener 51 is a nut. The nut is fixedly connected to the contact 42 as the target fastener, so that when the electrical connector 60 is connected to the contact 42, it can be directly achieved by rotating the second fastener 52 having a thread, which is easy to operate.

[0118] like Figure 6 As shown, in some embodiments, the third portion 73 has a receiving cavity 73 a . The receiving cavity 73 a is connected to the first cavity 71 a through the second cavity 72 a . The receiving cavity 73 a is used to receive at least a portion of the second fastener 52 .

[0119] In this embodiment, the third portion 73 may be a cylindrical structure, a trough structure, etc. The accommodating cavity 73 a is a cavity surrounded by the inner wall of the third portion 73 , and may be used to accommodate at least a portion of the second fastener 52 .

[0120] In this way, the installation and selection of the second fastener 52 are less restricted by the insulating member 70 , making it easier to obtain materials and install.

[0121] In some embodiments, the insulating member 70 is detachably connected to the fastening assembly 50 .

[0122] A detachable connection refers to a connection that is achieved by mechanical means and can be repeatedly plugged and unplugged without damage.

[0123] It is understood that when the insulating member 70 is detachably connected to the fastening assembly 50 and has an interference fit, the insulating member 70 generally has a certain elasticity and can be repeatedly installed and removed without being damaged.

[0124] The insulating member 70 is detachably connected to the fastening assembly 50 , which facilitates the removal and installation of the insulating member 70 , thereby facilitating the maintenance and replacement of the insulating member 70 .

[0125] like Figure 5 and Figure 8As shown, in some embodiments, the insulating member 70 is detachably connected to the contact member 42 via a fixing member 80 .

[0126] The fixing member 80 may be a clamp, an insert rod, etc., and may be specifically determined according to the shape and structure of the insulating member 70 and the contact member 42 as well as the fixing requirements.

[0127] The solution provided in this embodiment facilitates the detachable connection between the insulating member 70 and the contact member 42 by means of a tool (fixing member 80 ), which facilitates design and operation.

[0128] In some embodiments, at least the outer surface of the fixing member 80 is an insulating surface.

[0129] The fixing member 80 may be made of insulating material, or may be made of conductive material on the inside and insulating material on the outside.

[0130] This arrangement can reduce the risk of the introduction of the fixing member 80 adversely affecting the electrical connection performance of the connector 40 itself.

[0131] like Figure 7 As shown, in some embodiments, the insulating member 70 is provided with a limiting structure 75 . The limiting structure 75 is used to limit the relative position of the fixing member and the insulating member 70 .

[0132] The limiting structure 75 is a structure that limits the relative positions of the fixing member and the insulating member 70 , and can be a hook, a hole, etc., and can be determined according to the specific needs of use.

[0133] The setting of the limiting structure 75 can ensure that the position of the fixing part and the insulating part 70 is relatively fixed after the insulating part 70 is installed, and the fixing part is not easily separated from the insulating part 70, thereby fixing the limited position of the insulating part 70 and the main structure 41, so that the performance of the battery device is stable.

[0134] like Figure 7 As shown, in some embodiments, the retaining structure 75 includes a second protrusion 751 that protrudes from the outer surface of the insulating member 70. The second protrusion 751 is provided with a through hole 752 arranged along a first direction Y. The through hole 752 is used to allow the fixing member to pass through. The first direction Y is perpendicular to the stacking direction X of the contact member 42 and the electrical connector 60.

[0135] The second protrusion 751 can be integrally formed on the insulating member 70 , or can be separately connected to the insulating member 70 , such as being fixed to the insulating member 70 by plugging, snapping, or the like.

[0136] Through-hole 752 extends through two oppositely-spaced surfaces of second protrusion 751 in the first direction Y. The size of through-hole 752 can be adjusted based on the size of the fixture to facilitate assembly. The first direction Y can be determined based on actual use. For example, if second protrusion 751 is a cubic structure, first direction Y can be the length or width of second protrusion 751.

[0137] The limiting structure 75 uses a second protrusion 751 with a through hole 752 to facilitate the installation and positioning of the fixing member and prevent the fixing member from being easily dislodged from the limiting structure 75, thereby facilitating the performance of the battery device.

[0138] In some embodiments, the fixing member 80 is loosely fitted with the inner wall of the through hole 752 .

[0139] A clearance fit means that the dimensions of the cross section of the fixing member 80 in each direction are smaller than the dimensions of the inner wall of the cross section of the through hole 752 in the corresponding direction, so that a certain clearance exists between the two after assembly. For example, the width of the fixing member 80 can be 0.1 mm, 0.2 mm, etc. smaller than the width of the through hole 752, and the thickness of the fixing member 80 can be 0.1 mm, 0.2 mm, etc. smaller than the height of the through hole 752.

[0140] This makes it easy for the fixing member 80 to pass through the through hole 752 during installation, and the portion of the fixing member 80 located in the through hole 752 after installation can undergo a certain amount of relative movement relative to the second protrusion 751, which facilitates assembly and facilitates adjustment of the relative position of the fixing member 80 according to usage needs after installation.

[0141] like Figure 7 As shown, in some embodiments, a plurality of second protrusions 751 are provided. The plurality of second protrusions 751 are spaced apart along the first direction Y.

[0142] The interval arrangement means that there is a certain width of gap between two adjacent second protrusions 751 in the first direction Y.

[0143] The cooperation between the multiple second protrusions 751 can better define the relative position of the insulating member 70 and the fixing member 80 , and can reduce the force on a single second protrusion 751 , thereby reducing the risk of damage to the single second protrusion 751 .

[0144] In some embodiments, the securing member 80 comprises a cable tie.

[0145] The fixing member 80 may be only a cable tie, or may include other structures in addition to the cable tie, such as a hook, a rubber strip, etc., and the specific structure can be determined according to the needs of use.

[0146] Cable ties are a type of fastener used to secure objects by bundling them together. They can be made of materials such as nylon and plastic depending on the needs of use.

[0147] The fixing member 80 includes a cable tie, which has the advantages of convenient installation, high efficiency, low cost, and good economy. The use of the cable tie increases the freedom of disassembly of the insulating member and has strong versatility.

[0148] It is understandable that when the insulating part is both interference fit with the target fastener and connected to the contact part through the fixing part 80, the interference fit structure and the cable tie fixing structure can effectively reduce the risk of the insulating part falling off under mechanical working conditions.

[0149] In some embodiments, the insulating member 70 is an integrally formed structural member.

[0150] The insulating member 70 is manufactured through an integrated molding process, such as an injection molding process, a stamping process, etc., which can ensure that the various parts of the insulating member 70 are stably connected, easy to manufacture, and low in cost.

[0151] The provision of the insulating member 70 effectively protects the bottom of the connector, thereby providing more space for the overall high-voltage connection structure design of the battery device.

[0152] According to some embodiments of the present application, the present application further provides an electrical device, comprising a battery device provided by any of the above solutions. The battery device is used to store or provide electrical energy.

[0153] The power-consuming device may be any of the aforementioned devices or systems using batteries.

[0154] The electrical device provided in the embodiment of the present application, including the above-mentioned battery device, can achieve the same effect as above, and will not be described in detail here.

[0155] like Figures 3 to 8 As shown, an embodiment of the present application provides a battery device. The battery device includes a battery cell group 30, a connector 40, an insulating member 70 and an electrical connector 60. The battery cell group 30 has an output pole 31. The connector 40 includes a main structure 41 and a contact member 42 provided on the main structure 41. There are multiple output poles 31, contacts 42 and electrical connectors 60. Any contact member 42 is electrically connected to the corresponding output pole 31 through the electrical connector 60. The corresponding electrical connector 60 and contact member 42 are connected by a fastening assembly 50, and the three form a combined connector. The insulating member 70 is sleeved on the outside of at least one fastening assembly 50, and the insulating member 70 is interference fit with the fastening assembly 50 and is detachably connected. The insulating member 70 is also detachably connected to the contact member 42 through a cable tie.

[0156] The fastening assembly 50 includes a bolt and a nut. The nut is fixedly connected to the contact piece 42 by welding, riveting, etc. The insulating piece 70 is detachably connected to the assembly formed by the nut and the contact piece 42 by interference fit.

[0157] Specifically, the structure of the insulating member 70 matches the bottom structure of the connector 40's locking point. The insulating member 70 is secured to the bottom of the connector 40's locking point using a cable tie. The insulating member 70 has a second protrusion 751, which has a through-hole 752. During installation, the cable tie is first connected to the insulating member 70 through the through-hole 752, and then the insulating member 70 is secured to the contact 42 of the connector 40 using the cable tie.

[0158] The battery device provided in this embodiment can install and fix the insulating member 70 at the root of the locking point between the contact member 42 and the electrical connector 60 through a simple locking structure. When the locking point is installed with the electrical connector 60 (high-voltage component) through a bolt, the root of the bolt can be wrapped by the insulating member 70, thereby avoiding the problem of high-voltage ignition caused by the proximity of other high-voltage interfaces around the connector 40 and the protruding bolt root.

[0159] In addition, common connector insulation protection solutions typically use a baffle fixed between the positive and negative electrode locking points. This structure is often integrated with the connector, resulting in a complex production process. Moreover, if damaged, it cannot be freely replaced, requiring the entire connector to be replaced. The insulating member 70 provided in this embodiment has a low production cost, a simple process flow, and can be produced quickly. Its simple installation method of attaching with a cable tie allows the insulating member 70 to be easily replaced if damaged, without having to directly replace the entire connector 40.

[0160] This insulation protection solution offers low cost, and the connector 40 itself remains structurally unchanged. Furthermore, this structure is simple to manufacture and assemble on the production line, with minimal impact on overall production cycle time. Workers only need to pre-assemble the insulation member 70 to the connector 40 using cable ties, which does not affect subsequent processes. The insulation member 70 itself features a simple structure and mature manufacturing processes. The base structure of the insulation member 70 adapts to the base of the connector 40's locking point (i.e., where the connector 40 and nut form the structure), providing excellent wrapping. Furthermore, through an interference fit, it snugly engages the step in the connector 40's nut-connecting structure, ensuring high installation stability and safety under mechanical conditions. The base structure of the locking point is generally the same for connectors 40 within the same series, so this connector 40 can be compatible with connectors 40 with the same base structure, providing universal compatibility. This avoids the need to redevelop the insulation member 70 for new product development, thus reducing development costs. Furthermore, the insulation protection member's ease of installation and removal reduces labor costs when replacement is necessary. The insulating member 70 in this embodiment is interference-fitted with the nut and is detachably connected.

[0161] Furthermore, this solution utilizes a simple, low-cost insulator 70 and a separate cable tie attachment method, providing increased flexibility and versatility. It also effectively protects the bottom of the high-voltage connector 40, providing more space for designing the overall high-voltage connection structure.

[0162] The interference fit structure and the cable tie fixing structure can effectively prevent the insulating member 70 from falling off under mechanical working conditions.

[0163] This embodiment designs an insulation protection solution applicable to various types of connectors 40. During assembly, the insulating member 70 can be pre-fastened to the connector 40 with a cable tie, and then the electrical connector 60 can be installed on the locking interface of the connector 40 in a conventional manner.

[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: It includes a battery cell group, a connector, an electrical connector and an insulating member. The battery cell group has an output pole. The connector includes a main structure and a contact member provided on the main structure. The contact member is a component electrically connected to an external load. There are multiple output poles and multiple contacts. At least two of the contacts are electrically connected to the corresponding output poles through the electrical connector; the corresponding electrical connectors and the contacts are connected through a fastening assembly, and the three form a combined connector; the insulating member is sleeved outside at least one of the fastening assemblies, and at least two of the combined connectors are electrically isolated by the insulating member.

2. The battery device according to claim 1, wherein: The fastening assembly includes a first fastener and a second fastener that are fastened together. One of the first fastener and the second fastener is a target fastener that is fixedly connected to the contact member. The insulating member is sleeved outside at least a portion of the structure of the target fastener.

3. The battery device according to claim 2, wherein: In a first direction, a size of the target fastener is smaller than a size of the contact, and the first direction is perpendicular to a stacking direction of the contact and the electrical connector.

4. The battery device according to claim 3, wherein: The insulating member includes a first part, a second part, and a third part connected in sequence along the stacking direction, the first part is arranged around at least a portion of the contact member and forms a first cavity; the second part is arranged around at least a portion of the target fastener and forms a second cavity, and the second cavity is connected to the first cavity; the second part has an opening facing away from the first part, the opening is connected to the second cavity, and the third part covers the opening.

5. The battery device according to claim 4, wherein: The inner peripheral wall of the second portion is interference-fitted with the outer peripheral wall of the target fastener.

6. The battery device according to claim 4, wherein: A portion of the first portion protrudes from the second portion along a second direction to form a first convex portion, and the first convex portion is provided with a clamping structure for clamping the contact piece. The second direction is perpendicular to the stacking direction of the contact piece and the electrical connector.

7. The battery device according to claim 6, wherein: The clamping structure includes two groups of clamping plates arranged opposite to each other along a first direction; the two groups of clamping plates cooperate with each other to clamp the contact piece, and the first direction is perpendicular to the second direction.

8. The battery device according to claim 4, wherein: The first fastener is the target fastener, and the first fastener is a nut.

9. The battery device according to claim 8, wherein: The third portion has an accommodating cavity, which is communicated with the first cavity through the second cavity, and the accommodating cavity is used to accommodate at least a portion of the second fastener.

10. The battery device according to any one of claims 2 to 9, characterized in that: The insulating member is detachably connected to the fastening assembly.

11. The battery device according to claim 10, wherein: The insulating member is also detachably connected to the contact member via a fixing member.

12. The battery device according to claim 11, wherein: At least the outer surface of the fixing member is an insulating surface.

13. The battery device according to claim 11, wherein: The insulating member is provided with a limiting structure, and the limiting structure is used to limit the relative position of the fixing member and the insulating member.

14. The battery device according to claim 13, wherein: The limiting structure includes a second protrusion protruding from the outer surface of the insulating member, the second protrusion is provided with a through hole arranged along a first direction, the through hole is used for the fixing member to pass through; the first direction is perpendicular to the stacking direction of the contact member and the electrical connector.

15. The battery device according to claim 14, wherein: The fixing piece is loosely matched with the inner wall of the through hole.

16. The battery device according to claim 14, wherein: There are a plurality of second protrusions, and the plurality of second protrusions are spaced apart along the first direction.

17. The battery device according to claim 11, wherein: The fixing member includes a cable tie.

18. The battery device according to any one of claims 1 to 9, characterized in that: The insulating member is an integrally formed structural member.

19. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1-18.

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