Battery device, high-voltage connection kit and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device, a high-voltage connecting kit and a power utilization device, the battery device comprises a box body, a high-voltage connecting kit and a power utilization device, the box body is provided with a mounting hole; the battery monomer assembly is arranged in the box body; the high-voltage connecting device comprises a mounting panel, a first shielding layer, a conductive terminal and a grounding cable connecting piece, the mounting panel comprises a main body part and a protruding part which are connected, the main body part is arranged on the outer side of the box body, the protruding part penetrates through the mounting hole and is located in the box body, the first shielding layer is arranged on the protruding part in a sleeving mode, and the conductive terminal penetrates through the main body part and the protruding part; and the grounding cable connecting piece is configured to be in direct or indirect electric contact with the first shielding layer. In the use process of the battery device, the first shielding layer of the high-voltage connecting device can be effectively grounded, so that the shielding reliability of the high-voltage connecting device is improved, and the reliability of the battery device is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more particularly to a battery device, a high-voltage connection kit, and an electrical device. Background Art

[0002] In recent years, new energy vehicles have witnessed a leapfrog development. In the field of electric vehicles, the in-vehicle high-voltage interconnection system, as a key part of new energy vehicles, with the high-voltage connection device at its core, undertakes important tasks such as power transmission. Its performance directly affects the safety, reliability, and driving range of the entire vehicle. With the increasing number of new energy vehicles, the demand for high-voltage connection devices has also increased accordingly. In related technologies, the high-voltage connector is bolted to the metal box of the battery pack. The shielding shrapnel of the high-voltage connector is in direct contact with the metal box of the battery pack to form an electrical connection, and then a complete shielding circuit is formed through the metal box of the battery pack and the vehicle body grounding connection. However, in this method, there are reliability problems with the grounding of the shielding layer. How to improve the grounding of the shielding layer of the high-voltage connector has become one of the urgent problems to be solved currently. Summary of the Utility Model

[0003] The embodiments of the present application provide a battery device, a high-voltage connection kit, and an electrical device, which can effectively ground the first shielding layer of the high-voltage connection device during the use of the battery device, improve the shielding reliability of the high-voltage connection device, and further improve the reliability of the battery device.

[0004] In a first aspect, the embodiments of the present application provide a battery device, including: a box body provided with an installation hole; a battery cell assembly disposed inside the box body; a high-voltage connection device including an installation panel, a first shielding layer, a conductive terminal, and a grounding cable connector. The installation panel includes a connected main body portion and a protruding portion. The main body portion is disposed outside the box body, and the protruding portion passes through the installation hole and is located inside the box body. The first shielding layer is sleeved on the protruding portion. The conductive terminal passes through the main body portion and the protruding portion and is electrically connected to the battery cell assembly. The grounding cable connector is configured to be in direct or indirect electrical contact with the first shielding layer.

[0005] In the above technical solution, when the high-voltage connection device is in use, the first shielding layer covers the surface of the protruding part of the mounting panel, which can effectively block external electromagnetic interference from entering the device, avoid interference affecting the electrical signals transmitted by the conductive terminals, ensure the stable transmission of electrical energy by the high-voltage connection device, and ensure the normal operation of the battery device. The conductive terminals pass through the mounting panel to provide a stable channel for power transmission. The grounding cable connector can be in direct contact with the first shielding layer, reducing the intermediate transition and constructing a shorter and more direct grounding path. The grounding cable connector can also be indirectly electrically connected to the first shielding layer, reducing special wiring and complex connection processes, lowering production costs, and at the same time reducing the risk of installation errors caused by complex processes. Since the first shielding layer is electrically connected to the grounding cable connector, and the grounding cable connector can be connected to the grounding wire harness, the grounding reliability of the first shielding layer can be improved, and thus the overall reliability of the high-connection device can be improved.

[0006] In some embodiments of the present application, the conductive terminal includes an extending portion located within the protruding portion. The extending portion includes a conductive matrix, an insulating layer, and a second shielding layer. The insulating layer wraps around the conductive matrix, and the second shielding layer wraps around the insulating layer. The second shielding layer is electrically connected to the first shielding layer and the grounding cable connector.

[0007] In the above technical solution, the insulating layer wraps around the conductive matrix, which can effectively isolate the conductive matrix from the outside world, prevent current leakage, short circuit and other situations, ensure the safety and stability of the conductive terminal during operation, and improve the reliability of the entire electrical device. The second shielding layer wraps around the insulating layer and is electrically connected to the first shielding layer and the grounding cable connector, forming a complete shielding system, which can effectively block the electromagnetic waves generated during the internal current transmission of the conductive terminal from radiating outward, avoid electromagnetic interference to surrounding electronic devices or circuits, and ensure the normal operation of peripheral devices. The second shielding layer is electrically connected to the first shielding layer and the grounding cable connector, forming a continuous and complete shielding system, improving the shielding effect of the high-voltage connection device. At the same time, the combined action of the first shielding layer and the second shielding layer can more effectively block external electromagnetic waves from entering the internal circuit, and at the same time prevent the electromagnetic waves generated inside from leaking to the external environment, providing more reliable electromagnetic protection for the internal conductive matrix and the signals or currents transmitted by it, and reducing the impact of electromagnetic interference on the high-voltage connection device.

[0008] In some embodiments of the present application, the grounding cable connector and the second shielding layer are configured as an integral part.

[0009] In the above technical solution, by constructing the grounding cable connector and the second shielding layer as an integral part, the connection between the grounding cable connector and the second shielding layer can be made more firm, enhancing the strength of the overall structure. When subjected to external impact, the integral part can better withstand stress and is not easily deformed or damaged, which can further improve the reliability of grounding, thereby protecting the internal electrical connection and shielding function and improving the durability and reliability of the high-voltage connection device.

[0010] In some embodiments of the present application, the grounding cable connector is welded to the second shielding layer.

[0011] In the above technical solution, welding is a permanent connection method, which can form a firm physical and electrical connection between the grounding cable connector and the second shielding layer. This connection method can ensure that during long-term use, even under the action of external forces such as vibration and impact, the connection will not loosen easily, thereby ensuring the continuity and stability of grounding.

[0012] In some embodiments of the present application, at least one of the first shielding layer and the second shielding layer is provided with an elastic member to make the first shielding layer and the second shielding layer in electrical contact.

[0013] In the above technical solution, the elastic force provided by the elastic member can ensure that there is sufficient and stable contact pressure between the first shielding layer and the second shielding layer. Sufficient contact pressure helps to reduce the contact resistance, enabling current to conduct smoothly between the two shielding layers, thereby effectively forming a continuous electromagnetic shielding structure.

[0014] In some embodiments of the present application, the mounting panel is provided with a through hole penetrating the main body portion and the protruding portion, the conductive terminal is inserted through the through hole, the first shielding layer is provided with a first elastic member, and a part of the first elastic member extends to the inside of the through hole; the second shielding layer is provided with a second elastic member, and the second elastic member elastically abuts against the first elastic member.

[0015] In the above technical solution, the first elastic member extends to the inside of the through hole, which can play a certain role in clamping and fixing the conductive terminal inserted through the through hole. The first elastic member and the second elastic member elastically abut against each other, enabling a reliable electrical connection between the first shielding layer and the second shielding layer through the elastic member, and also ensuring the continuity of shielding at the position where the conductive terminal passes through the through hole, which is beneficial to improving the grounding reliability of the first shielding layer.

[0016] In some embodiments of the present application, the first elastic member is provided at both ends of the first shielding layer in the thickness direction of the conductive substrate, and the second elastic member is provided at both ends of the second shielding layer in the thickness direction of the conductive substrate.

[0017] In the above technical solution, the first elastic member and the second elastic member located at both ends of the conductive substrate in the thickness direction play a better fixing role for the conductive substrate. They can limit the movement and shaking of the conductive substrate in the thickness direction, keep the conductive substrate in a stable position in the high-voltage connection device, and are not easily displaced due to external factors. The above solution can also increase the arrangement positions of the first elastic member and the second elastic member, provide more electrical connection positions for the first shielding layer and the second shielding layer, and improve the grounding reliability of the first shielding layer.

[0018] In some embodiments of the present application, the conductive terminal includes a plugging portion, and the plugging portion is provided on the main body portion and connected to the extending portion. In the above technical solution, the design of the plugging portion can enable the conductive terminal to be conveniently and accurately connected to the mounting panel, reducing problems such as poor contact or signal transmission errors caused by inaccurate connection.

[0019] In some embodiments of the present application, the conductive substrate and the plugging portion are connected by bolts. In the above technical solution, bolt connection belongs to a detachable connection method. When replacing or repairing, only need to unscrew the bolts to separate the conductive substrate and the plugging portion. The operation is simple and convenient, which can save maintenance time and cost and improve the maintainability of the high-voltage connection device. At the same time, bolt connection has high mechanical strength and can withstand external forces such as a certain degree of tensile force, pressure and shear force. In the electrical device, even affected by vibration, impact or other external forces, the connection between the conductive substrate and the plugging portion is not easily loosened or detached, thus ensuring the stability and reliability of the entire high-voltage connection device.

[0020] In some embodiments of the present application, the conductive substrate is a copper material part. In the above technical solution, copper has an extremely low resistivity. Using a copper material part as the conductive substrate can greatly reduce the resistance during current transmission, reduce power loss, and improve the electrical transmission efficiency. At the same time, copper also has excellent thermal conductivity. When current passes through the conductive substrate, certain heat will inevitably be generated. The copper material can quickly dissipate this heat, effectively preventing the conductive substrate from being damaged due to overheating.

[0021] In a second aspect, an embodiment of the present application further provides a high-voltage connection kit, including a male head component and a female head component that can be inserted and matched with each other. One of the male head component and the female head component is a high-voltage connection device. The high-voltage connection device includes a mounting panel, a first shielding layer, a conductive terminal, and a grounding cable connector. The mounting panel includes a connected main body portion and a protruding portion. The first shielding layer is sleeved on the protruding portion. The conductive terminal passes through the main body portion and the protruding portion and is used for electrically connecting with the battery cell assembly. The grounding cable connector is configured to be directly or indirectly in electrical contact with the first shielding layer.

[0022] In the above technical solution, the plugging and mating method of the male head component and the female head component makes the installation process simple and fast. At the same time, when the male head component and the female head component are plugged into each other, a tight connection can be formed to ensure that there is no leakage or discharge of high-voltage electricity during the transmission process. The male head component or the female head component formed by using the above high-voltage connection device can improve the reliability of effective grounding, and thus improve the reliability of the high-voltage connection kit.

[0023] In a third aspect, an embodiment of the present application further provides an electrical device, including the above battery device.

[0024] In the above technical solution, since the battery device has high reliability, the electrical device using this battery device can also have high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 Schematic structural diagram of an electrical device provided for some embodiments of the present application being a vehicle;

[0027] Figure 2 Exploded view of the structure of a battery device provided for some embodiments of the present application;

[0028] Figure 3 Schematic structural diagram of a battery device provided for some embodiments of the present application;

[0029] Figure 4 Exploded view of the structure of a high-voltage connection device provided for some embodiments of the present application;

[0030] Figure 5 Schematic diagram of the structure of a high-voltage connection device provided for some embodiments of the present application Figure 1 ;

[0031] Figure 6 Schematic diagram of the structure of a high-voltage connection device provided for some embodiments of the present application Figure 2 ;

[0032] Figure 7 Schematic structural diagram of an installation panel provided for some embodiments of the present application;

[0033] Figure 8 Schematic structural diagram of a conductive terminal provided for some embodiments of the present application;

[0034] Figure 9 Schematic structural diagram of a high-voltage connection kit provided for some embodiments of the present application.

[0035] Icon:

[0036] 100. High-voltage connection device;

[0037] 10. Mounting panel; 10a. Through hole; 11. Main body part; 12. Protruding part;

[0038] 20. Conductive terminal; 21. Extension part; 211. Conductive matrix; 211a. First hole; 212. Insulating layer; 213. Second shielding layer; 2131. Second elastic part; 22. Insertion part; 22a. Second hole;

[0039] 30. Ground cable connector;

[0040] 40. First shielding layer; 41. First elastic part;

[0041] 1000. Electrical device;

[0042] 200. Controller; 300. Motor;

[0043] 400. Battery device; 410. Box body; 411. First box body; 412. Second box body; 41a. Mounting hole; 420. Battery cell assembly; 421. Battery cell; 500. High-voltage connection kit; 510. Male head component; 520. Female head component; X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above accompanying drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above accompanying drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0046] Reference to "embodiment" in this application means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0047] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "attached" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0049] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only illustrative and should not constitute any limitation to this application.

[0050] The term "plurality" as used in this application refers to two or more (including two).

[0051] In this application, the battery cell may include lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited thereto. The battery cell may be in the shape of a cylinder, a flat body, a cuboid or other shapes, and the embodiments of this application are not limited thereto. Generally, the battery cells are divided into three types according to the packaging method: cylindrical battery cells, square battery cells and pouch battery cells, and the embodiments of this application are not limited thereto.

[0052] The battery apparatus mentioned in the embodiments of the present application may refer to an apparatus including one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a combination of series and parallel through a busbar component. In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0053] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells with cable ties.

[0054] In some embodiments, the battery apparatus may be a battery pack, which includes a housing and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the housing. As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the housing by fixing the battery module in the housing. As an example, the battery cell assembly may also be accommodated in the housing by directly fixing a plurality of battery cells in the housing. The housing can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.

[0055] The battery cell includes a housing, an electrode assembly, and an electrolyte. The housing is used to accommodate the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode tab, a negative electrode tab, and a separator. The battery cell mainly operates by the movement of metal ions between the positive electrode tab and the negative electrode tab. The positive electrode tab includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode current collector without the coated positive electrode active material layer protrudes from the positive electrode current collector with the coated positive electrode active material layer. The positive electrode current collector without the coated positive electrode active material layer serves as the positive electrode ear. Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode tab includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector, and the negative electrode current collector without the coated negative electrode active material layer protrudes from the negative electrode current collector with the coated negative electrode active material layer. The negative electrode current collector without the coated negative electrode active material layer serves as the negative electrode ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. To ensure passing a large current without fusing, the number of positive electrode ears is multiple and stacked together, and the number of negative electrode ears is multiple and stacked together.

[0056] The material of the separator membrane can be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly can be of a wound structure or a stacked structure, and the embodiments of the present application are not limited thereto.

[0057] In recent years, new energy vehicles have witnessed a leapfrog development. In the field of electric vehicles, the in-vehicle high-voltage interconnection system, as a key part of new energy vehicles, with the high-voltage connection device at its core, undertakes important tasks such as power transmission. Its performance is directly related to the safety, reliability, and driving range of the whole vehicle. With the increasing number of new energy vehicles, the demand for high-voltage connection devices has also increased correspondingly. In related technologies, the high-voltage connector is attached to the metal box body of the battery pack by bolts. The shielding shrapnel of the high-voltage connector is in direct contact with the metal box body of the battery pack to form an electrical connection, and then a complete shielding loop is formed through the metal box body of the battery pack and the vehicle body grounding connection. However, in this way, there are reliability problems with the grounding of the shielding layer. How to improve the grounding of the shielding layer of the high-voltage connector has become one of the urgent problems to be solved currently. Generally speaking, since the outer shell material of the high-voltage connection device is generally plastic and non-conductive, the shrapnel of the shielding layer cannot contact the plastic mounting panel to form a stable electrical connection. Moreover, the box body of the battery pack can be made of metal or non-metal materials. When the box body of the battery pack is made of non-metal materials, it will further prevent the shielding layer from effectively grounding and achieving a stable shielding effect.

[0058] Based on the above considerations, in order to solve the problem that the shielding layer of the high-voltage connection device of the battery pack cannot be effectively grounded, thus unable to achieve a stable shielding effect, the applicant has conducted in-depth research and designed a battery device, including a box body, a battery cell assembly, and a high-voltage connection device. The box body is provided with a mounting hole. The battery cell assembly is arranged inside the box body. The high-voltage connection device includes: a mounting panel, a first shielding layer, a conductive terminal, and a grounding cable connecting piece. The mounting panel includes a connected main body part and a protruding part. The main body part is arranged outside the box body, and the protruding part passes through the mounting hole and is located inside the box body. The first shielding layer is sleeved on the protruding part. The conductive terminal passes through the main body part and the protruding part and is electrically connected to the battery cell assembly. The grounding cable connecting piece is configured to be in direct or indirect electrical contact with the first shielding layer.

[0059] In the battery device with this structure, during the operation of the high-voltage connection device, the first shielding layer covers the surface of the protruding part of the mounting panel, which can effectively block external electromagnetic interference from entering the device interior, avoid interference affecting the electrical signals transmitted by the conductive terminals, ensure the stable transmission of electrical energy by the high-voltage connection device, and ensure the normal operation of the electrical device. The conductive terminals pass through the mounting panel, providing a stable channel for the transmission of electrical energy. The grounding cable connector can be directly in contact with the first shielding layer, reducing intermediate transitions and constructing a shorter and more direct grounding path. The grounding cable connector is indirectly in electrical contact with the first shielding layer, reducing special wiring and complex connection processes, lowering production costs, and at the same time reducing the risk of installation errors caused by complex processes.

[0060] The battery device disclosed in the embodiments of the present application can be but is not limited to being used in the fields of electric vehicles, industrial electrical equipment, power transmission and distribution networks, and renewable energy power generation systems, etc. The battery device can be but is not limited to a lithium-ion battery device, a lead-acid battery device, a nickel-metal hydride battery device, a fuel cell device, etc.

[0061] The embodiments of the present application provide an electrical device using a battery device as a power source. The electrical device can be but is not limited to an electric vehicle, a ship, a spacecraft, an energy storage system, etc. Among them, the spacecraft can include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0062] For the convenience of description in the following embodiments, an electrical device 1000 in an embodiment of the present application is taken as a vehicle for illustration.

[0063] Please refer to Figure 1 , Figure 1 FIG. is a schematic structural diagram of an electrical device 1000 as a vehicle provided in some embodiments of the present application. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery device 400 is provided inside the vehicle. The battery device 400 can be disposed at the bottom, the head, or the tail of the vehicle. The battery device 400 can be used for power supply of the vehicle. For example, the battery device 400 can be used as the operating power source of the vehicle. The vehicle can also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 400 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle.

[0064] In some embodiments of the present application, the battery device 400 can not only be used as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0065] Please refer to Figure 2 , Figure 2Exploded view of the structure of the battery device 400 provided by some embodiments of the present application. The battery device 400 includes a box body 410, a plurality of battery cells 421, and a high-voltage connection device 100. The battery cells 421 are configured to be accommodated in the box body 410. Among them, the box body 410 is used to provide an assembly space for the battery cells 421. The box body 410 can adopt various structures, and the high-voltage connection device 100 is installed on the box body 410. In some embodiments, the box body 410 may include a first box body 411 and a second box body 412. The first box body 411 and the second box body 412 cover each other, and the first box body 411 and the second box body 412 jointly define an assembly space for accommodating the battery cells 421. The second box body 412 may be a hollow structure with one end open, and the first box body 411 may be a plate-like structure. The first box body 411 covers the open side of the second box body 412 so that the first box body 411 and the second box body 412 jointly define an assembly space; the first box body 411 and the second box body 412 may also both be hollow structures with one side open, and the open side of the first box body 411 covers the open side of the second box body 412. Of course, the box body 410 formed by the first box body 411 and the second box body 412 can be of various shapes, such as a cylinder, a cuboid, etc.

[0066] Among them, each battery cell 421 can be a secondary battery or a primary battery. Among them, a secondary battery refers to a battery cell 421 that can be activated by charging after the battery cell 421 discharges and can be used continuously; it can also 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, etc. The embodiments of the present application are not limited thereto. The battery cell 421 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc. Exemplarily, in Figure 2 the battery cell 421 is in the shape of a cuboid.

[0067] Please refer to Figures 3 to 7 , Figure 3Schematic structural diagram of a battery device 400 provided by some embodiments of the present application. Some embodiments of the present application provide a battery device 400, including: a box body 410, a battery cell assembly 420, and a high-voltage connection device 100. The box body 410 is provided with a mounting hole 41a; the battery cell assembly 420 is arranged inside the box body 410; the high-voltage connection device 100 includes a mounting panel 10, a first shielding layer 40, a conductive terminal 20, and a ground cable connecting member 30. The mounting panel 10 includes a connected main body portion 11 and a protruding portion 12. The main body portion 11 is arranged outside the box body 410, and the protruding portion 12 passes through the mounting hole 41a and is located inside the box body 410. The first shielding layer 40 is sleeved on the protruding portion 12. The conductive terminal 20 passes through the main body portion 11 and the protruding portion 12 and is electrically connected to the battery cell assembly 420. The ground cable connecting member 30 is configured to be in direct or indirect electrical contact with the first shielding layer 40.

[0068] In the high-voltage connection device 100, the mounting panel 10 constitutes the outer shape framework of the high-voltage connection device 100 and is a component that protects, supports, and provides electromagnetic shielding for internal components. The main body portion 11 may refer to the main structure of the mounting panel 10, and the protruding portion 12 may refer to a structure protruding from the main body portion 11. The mounting panel 10 as a whole may be, but is not limited to, a plastic part, a composite material part, and so on.

[0069] The first shielding layer 40 may refer to a special material structure that can play an electromagnetic shielding role and is used to block or reduce electromagnetic interference. It may be, but is not limited to, a metal braided net, a metal foil, a conductive polymer layer, a plating layer, or a coating, etc. Among them, when the first shielding layer 40 is made of a metal material, it may be, but is not limited to, copper, aluminum, and magnetic materials, etc. When the first shielding layer 40 is a conductive polymer, it may be, but is not limited to, carbon nanotubes, graphene composite materials, etc.

[0070] The conductive terminal 20 may refer to a component that realizes electrical connection and ensures stable power transmission in the high-voltage connection device 100. The material of the conductive terminal 20 needs to have excellent electrical conductivity, good mechanical properties, high heat resistance, and certain corrosion resistance to ensure stable current transmission, withstand mechanical stress, adapt to high-temperature environments, and maintain long-term reliable operation in the high-voltage connection device 100. It can be understood that the material may be, but is not limited to, copper, copper alloy, and metal-plated copper, etc.

[0071] The number of conductive terminals 20 is at least two. Among at least two conductive terminals 20, some may be configured as positive terminals, and the other part may be configured as negative terminals. Exemplarily, referring to Figure 3 and Figure 4 , two conductive terminals 20 are provided in the second direction Y.

[0072] The grounding cable connector 30 may refer to a component used to establish a reliable grounding connection, which may connect the high-voltage connection device 100 to the ground, thereby effectively releasing excess charge and avoiding safety accidents caused by leakage and other problems. The material may include but is not limited to copper, copper alloy, tinned copper, aluminum alloy, etc.

[0073] The ground cable connector 30 may be a component for connecting a ground wire harness, and may be, but is not limited to, a conductive metal block.

[0074] In the above technical solution, when the high-voltage connection device 100 is in use, the first shielding layer 40 covers the surface of the protruding portion 12 of the installation panel 10, which can effectively block external electromagnetic interference from entering the device, avoid interference affecting the electrical signal transmitted by the conductive terminal 20, ensure the stable transmission of electric energy by the high-voltage connection device 100, and ensure the normal operation of the battery device 400. The conductive terminal 20 is arranged in the installation panel 10 to provide a stable channel for power transmission. When the grounding cable connector 30 can directly contact the first shielding layer 40, the intermediate transition is reduced, and a shorter and more direct grounding path is constructed; when the grounding cable connector 30 can also indirectly contact the first shielding layer 40, special wiring and complex connection processes are reduced, production costs are reduced, and the risk of installation errors caused by complex processes is reduced. Since the first shielding layer 40 is electrically connected to the grounding cable connector 30, the grounding cable connector 30 can be connected to the grounding harness, so that the grounding reliability of the first shielding layer 40 can be improved, thereby improving the overall reliability of the high-voltage connection device 100.

[0075] In some embodiments of the present application, reference Figure 4 , Figure 6 and Figure 8 The conductive terminal 20 includes an extension portion 21 located in the protrusion 12, the extension portion 21 includes a conductive substrate 211, an insulating layer 212 and a second shielding layer 213, the insulating layer 212 is wrapped on the conductive substrate 211, the second shielding layer 213 is wrapped on the insulating layer 212, and the second shielding layer 213 is electrically connected to the first shielding layer 40 and the grounding cable connector 30.

[0076] "The conductive terminal 20 includes an extension portion 21 located within the protrusion 12", reference Figure 4 It can be understood that the extended portion 21 refers to a portion of the conductive terminal 20 extending in the first direction X beyond the mounting panel 10 .

[0077] The conductive substrate 211 may refer to a component with conductive properties, and may be made of a material with good conductivity, such as copper, aluminum, etc. These materials have low resistivity, can effectively conduct current, and reduce the loss of electric energy during transmission.

[0078] The insulating layer 212 may refer to a structure for insulating and isolating the conductive substrate 211 and the second shielding layer 213, and may be, but is not limited to, materials such as polytetrafluoroethylene plastic, polystyrene plastic, and silicone rubber, etc.

[0079] The second shielding layer 213 may refer to a structure in the conductive terminal 20 for reducing electromagnetic interference, and may be, but is not limited to, materials such as metal materials and their alloys, metallized fabrics, and conductive polymer materials, etc. Among them, the structures of the second shielding layer 213 and the first shielding layer 40 may be the same or different.

[0080] In the above technical solution, the insulating layer 212 is wrapped around the conductive substrate 211, which can effectively isolate the conductive substrate 211 from the second shielding layer 213, reduce the influence of the second shielding layer 213 on the power transmission of the conductive terminal 20, and reduce the risk of current leakage, short circuit, etc., ensuring the safety and stability of the conductive terminal 20 during operation, and improving the reliability of the entire electrical device 1000. The second shielding layer 213 is wrapped outside the insulating layer 212 and is electrically connected to the first shielding layer 40 and the ground cable connector 30, forming a complete shielding system, which can effectively block the electromagnetic waves generated when the current is transmitted inside the conductive terminal 20 from radiating outward, avoiding electromagnetic interference to surrounding electronic devices or circuits, and ensuring the normal operation of the surrounding devices. The second shielding layer 213 is electrically connected to the first shielding layer 40 and the ground cable connector 30 to form a continuous and complete shielding system, improving the shielding effect of the high-voltage connection device 100. At the same time, the combined action of the first shielding layer 40 and the second shielding layer 213 can more effectively block external electromagnetic waves from entering the internal circuit, and prevent the electromagnetic waves generated inside from leaking to the external environment, providing more reliable electromagnetic protection for the internal conductive substrate 211 and the signals or currents transmitted by it, and reducing the influence of electromagnetic interference on the high-voltage connection device 100.

[0081] It can be understood that by adopting the above solution, when the first shielding layer 40 can be effectively grounded through the ground cable connector 30, reducing the connection structure between the first shielding layer 40 and the ground cable connector 30 facilitates the electrical connection between the first shielding layer 40 and the ground cable connector 30, can improve the assembly efficiency, improve the manufacturability of the high-voltage connection device 100, and a simpler connection structure is also beneficial to improving the reliability of the high-voltage connection device 100.

[0082] In some embodiments of the present application, referring to Figure 8 , the ground cable connector 30 and the second shielding layer 213 are constructed as an integral part.

[0083] An integrated component can refer to a combination of components that form an integral structure through specific methods, and the forming methods can include but are not limited to welding or integral molding, etc. Welding can refer to a processing technique that connects the grounding cable connector 30 and the second shielding layer 213 together by heating, pressurizing, or both, causing the two to fuse with each other at the atomic level to form a tight connection. Integral molding means that during the manufacturing process, the grounding cable connector 30 and the second shielding layer 213 are directly molded as a whole, such as through processes like die casting or injection molding to form a complete component in one step.

[0084] In the above technical solution, by constructing the grounding cable connector 30 and the second shielding layer 213 as an integrated component, the connection between the grounding cable connector 30 and the second shielding layer 213 can be made more firm, enhancing the strength of the overall structure. When subjected to external impact, the integrated component can better withstand stress and is not easily deformed or damaged, which can further improve the reliability of grounding, thereby protecting the internal electrical connection and shielding functions and enhancing the durability and reliability of the high-voltage connection device 100.

[0085] In some embodiments of the present application, referring to Figure 8 , the grounding cable connector 30 is welded to the second shielding layer 213.

[0086] Welding can refer to a processing technique that connects the welded parts together by heating, pressurizing, or both, causing the welded parts to fuse with each other at the atomic level to form a tight connection.

[0087] In the above technical solution, welding is a permanent connection method that can form a firm physical and electrical connection between the grounding cable connector 30 and the second shielding layer 213. This connection method can ensure that during long-term use, even under the action of external forces such as vibration and impact, the connection will not loosen easily, thereby ensuring the continuity and stability of grounding.

[0088] In some embodiments of the present application, referring to Figures 4 to 8 , at least one of the first shielding layer 40 and the second shielding layer 213 is provided with an elastic member to make the first shielding layer 40 and the second shielding layer 213 in electrical contact.

[0089] An elastic member can refer to a structure or component that can deform when subjected to external force and can return to its original shape after the external force is removed.

[0090] "At least one of the first shielding layer 40 and the second shielding layer 213 is provided with an elastic member" can be understood as that it can be that only the first shielding layer 40 is provided with an elastic member, or only the second shielding layer 213 is provided with an elastic member, or both the first shielding layer 40 and the second shielding layer 213 are provided with elastic members.

[0091] In the above technical solution, the elastic force provided by the elastic member can ensure sufficient and stable contact pressure between the first shielding layer 40 and the second shielding layer 213. Sufficient contact pressure helps reduce the contact resistance, enabling current to conduct smoothly between the two shielding layers, thereby effectively forming a continuous and stable electromagnetic shielding structure.

[0092] In some embodiments of the present application, referring to Figures 5 to 8 , the mounting panel 10 is provided with a through hole 10a that penetrates the main body portion 11 and the protruding portion 12. The conductive terminal 20 is inserted through the through hole 10a. The first shielding layer 40 is provided with a first elastic member 41, and a part of the first elastic member 41 extends to the inside of the through hole 10a; the second shielding layer 213 is provided with a second elastic member 2131, and the second elastic member 2131 elastically abuts against the first elastic member 41.

[0093] "The mounting panel 10 is provided with a through hole 10a that penetrates the main body portion 11 and the protruding portion 12", which can be referred to Figure 7 , it can mean that a hole is formed in the mounting panel 10, and the through hole 10a penetrates the mounting panel 10, and the other side can be seen from one side of the mounting panel 10.

[0094] "The conductive terminal 20 is inserted through the through hole 10a", which can be referred to Figure 4 , it can mean that the conductive terminal 20 passes through this through hole 10a, so that a part of the conductive terminal 20 is inside the mounting panel 10 and a part is outside the mounting panel 10.

[0095] "A part of the first elastic member 41 extends to the inside of the through hole 10a", which can be referred to Figure 4 , the first elastic member 41 partially extends to the inside of the through hole 10a in the first direction X. "The second elastic member 2131 elastically abuts against the first elastic member 41", it can be understood that the second elastic member 2131 and the first elastic member 41 are in contact with each other and generate an elastic acting force to prevent further relative movement between them.

[0096] In the above technical solution, the first elastic member 41 extends to the inside of the through hole 10a, which can play a certain role in clamping and fixing the conductive terminal 20 inserted through the through hole 10a. The first elastic member 41 and the second elastic member 2131 elastically abut against each other, enabling a reliable electrical connection between the first shielding layer 40 and the second shielding layer 213 through the elastic member, and also ensuring the shielding continuity at the position where the conductive terminal 20 passes through the through hole 10a, which is beneficial to improving the grounding reliability of the first shielding layer 40.

[0097] In some embodiments of the present application, referring to Figure 5 , Figure 7 and Figure 8, the first elastic member 41 is provided at both ends of the first shielding layer 40 in the thickness direction of the conductive base 211, and the second elastic member 2131 is provided at both ends of the second shielding layer 213 in the thickness direction of the conductive base 211.

[0098] "The thickness direction of the conductive base 211" can refer to Figure 8 , and it can refer to the third direction Z.

[0099] In the above technical solution, the first elastic member 41 and the second elastic member 2131 located at both ends of the conductive base 211 in the thickness direction play a better fixing role on the conductive base 211, which is beneficial to restricting the movement and shaking of the conductive base 211 in the thickness direction, so that the conductive base 211 maintains a stable position in the high-voltage connection device 100 and is not easily displaced due to external factors (such as vibration, impact, etc.). The above solution can also increase the arrangement positions of the first elastic member 41 and the second elastic member 2131, which can provide more electrical connection positions for the first shielding layer 40 and the second shielding layer 213, and improve the grounding reliability of the first shielding layer 40.

[0100] In some embodiments of the present application, referring to Figure 4 , Figure 5 and Figure 7 , the conductive terminal 20 includes a plugging portion 22, and the plugging portion 22 is provided on the main body portion 11 and is connected to the extending portion 21.

[0101] "The plugging portion 22 is provided on the main body portion 11 and is connected to the extending portion 21" can refer to Figure 4 , Figure 5 and Figure 7 , it can be understood that the plugging portion 22 is a structure in which the conductive terminal 20 extends and inserts into the interior of the mounting panel 10 in the first direction X, and is used for plugging and mating with external terminals.

[0102] In the above technical solution, through the plugging portion 22, the conductive terminal 20 can be conveniently and accurately connected to the mounting panel 10, reducing problems such as poor contact or signal transmission errors caused by inaccurate connection.

[0103] In some embodiments of the present application, the conductive base 211 and the plugging portion 22 are connected by bolts.

[0104] Connected by bolts can refer to a mechanical connection method of connecting two or more components together through bolts, nuts, washers and other parts. Exemplarily, referring to Figure 5 and Figure 8 , the conductive base 211 is provided with a first hole 211a, the plugging portion 22 is provided with a second hole 22a, and the bolt can pass through the first hole 211a and the second hole 22a, thereby fixing the conductive base 211 and the plugging portion 22 together.

[0105] In the above technical solution, the bolt connection belongs to a detachable connection method. During replacement or maintenance, only by unscrewing the bolts can the conductive base 211 and the plug-in part 22 be separated. The operation is simple and convenient, which can save maintenance time and cost and improve the maintainability of the high-voltage connection device 100. At the same time, the bolt connection has high mechanical strength and can withstand external forces such as a certain degree of tensile force, pressure, and shear force. In the electrical device 1000, even under the influence of vibration, impact, or other external forces, the connection between the conductive base 211 and the plug-in part 22 is not likely to become loose or fall off, thus ensuring the stability and reliability of the entire high-voltage connection device 100.

[0106] In some embodiments of the present application, the conductive base 211 is a copper component. In the above technical solution, copper has an extremely low resistivity. Using a copper component as the conductive base 211 can greatly reduce the resistance during current transmission, reduce power loss, and improve the electrical transmission efficiency. At the same time, copper also has excellent thermal conductivity. When current passes through the conductive base 211, certain heat will inevitably be generated. The copper material can quickly dissipate this heat and effectively prevent the conductive base 211 from being damaged due to overheating.

[0107] According to some embodiments of the present application, referring to Figure 9 , the present application further provides a high-voltage connection kit 500, which includes a male head component 510 and a female head component 520 that can be inserted and cooperated with each other. One of the male head component 510 and the female head component 520 is the high-voltage connection device 100. The high-voltage connection device 100 includes a mounting panel 10, a first shielding layer 40, a conductive terminal 20, and a grounding cable connector 30. The mounting panel 10 includes a connected main body part 11 and a protruding part 12. The first shielding layer 40 is sleeved on the protruding part 12. The conductive terminal 20 passes through the main body part 11 and the protruding part 12 and is electrically connected to the battery cell assembly 420. The grounding cable connector 30 is configured to be in direct or indirect electrical contact with the first shielding layer 40.

[0108] The high-voltage connection device 100 can refer to the high-voltage connection device 100 in any of the previous embodiments. As an example, the high-voltage connection kit 500 can be applied in an electric vehicle. The female head component 520 is the high-voltage connection device 100 of the previous embodiment and is installed on the battery device 400. The male head component 510 is arranged on other components that need to be powered on in the electric vehicle.

[0109] In the above technical solution, the plugging and mating method of the male head component 510 and the female head component 520 makes the installation process simple and fast. At the same time, when the male head component 510 and the female head component 520 are plugged into each other, a tight connection can be formed to ensure that no leakage or discharge occurs during the transmission of high-voltage electricity. The male head component 510 or the female head component 520 formed by the above high-voltage connection device 100 can improve the reliability of effective grounding, and thus improve the reliability of the high-voltage connection kit 500.

[0110] According to some embodiments of the present application, with reference to Figure 1 , the present application further provides an electrical device 1000, including the battery device 400 of any one of the above embodiments, and the battery device 400 is used to provide electrical energy for the electrical device 1000.

[0111] In the above technical solution, since the battery device 400 has high reliability, the electrical device 1000 using the battery device 400 can also have high reliability.

[0112] Next, with reference to Figures 4 to 8 , the battery device 400 of the embodiments of the present application will be described, including: a box body 410, a battery cell assembly 420, and a high-voltage connection device 100.

[0113] The box body 410 is provided with an installation hole 41a, and the battery cell assembly 420 is arranged inside the box body 410. The high-voltage connection device 100 includes an installation panel 10, a conductive terminal 20, a ground cable connector 30, and a first shielding layer 40.

[0114] The installation panel 10 includes a connected main body portion 11 and a protruding portion 12. The main body portion 11 is arranged outside the box body 410, the protruding portion 12 passes through the installation hole 41a and is located inside the box body 410. The first shielding layer 40 is sleeved on the protruding portion 12. The conductive terminal 20 passes through the main body portion 11 and the protruding portion 12 and is electrically connected to the battery cell assembly 420. The ground cable connector 30 is in electrical contact with the first shielding layer 40.

[0115] The installation panel 10 is provided with a through hole 10a penetrating through the main body portion 11 and the protruding portion 12. The conductive terminal 20 passes through the through hole 10a. The first shielding layer 40 is provided with a first elastic member 41. The first elastic member 41 is located at both ends in the thickness direction of the conductive substrate 211. A part of the first elastic member 41 extends to the inside of the through hole 10a; the second shielding layer 213 is provided with a second elastic member 2131. The second elastic member 2131 is located at both ends in the thickness direction of the conductive substrate 211. The second elastic member 2131 is elastically abutted against the first elastic member 41.

[0116] The conductive terminal 20 includes an extension part 21 and a plug-in part 22. The extension part 21 is located at the protruding part 12. The extension part 21 includes a conductive base body 211, an insulating layer 212, and a second shielding layer 213. The conductive base body 211 is made of copper. The insulating layer 212 is wrapped around the conductive base body 211, and the second shielding layer 213 is wrapped around the insulating layer 212. The second shielding layer 213 is electrically connected to the first shielding layer 40 and the ground cable connector 30. The plug-in part 22 is located at the main body part 11 and is connected to the extension part 21. The extension part 21 and the plug-in part 22 are connected by bolts.

[0117] The ground cable connector 30 is welded to the second shielding layer 213 and is connected to the ground wire harness.

[0118] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, if there is no special description, all the implementation manners and optional implementation manners of the present application can be combined with each other to form a new technical solution. If there is no special description, all the technical features and optional technical features of the present application can be combined with each other to form a new technical solution. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized in that, Comprising: A box body, which is provided with mounting holes; A battery cell assembly, which is arranged inside the box body; A high-voltage connection device, comprising a mounting panel, a first shielding layer, a conductive terminal and a grounding cable connector. The mounting panel includes a connected main body part and a protruding part. The main body part is arranged outside the box body, and the protruding part passes through the mounting hole and is located inside the box body. The first shielding layer is sleeved on the protruding part. The conductive terminal passes through the main body part and the protruding part and is electrically connected to the battery cell assembly. The grounding cable connector is configured to be in electrical contact with the first shielding layer directly or indirectly.

2. The battery device according to claim 1, characterized in that, The conductive terminal includes an extending part located inside the protruding part. The extending part includes a conductive matrix, an insulating layer and a second shielding layer. The insulating layer is wrapped on the conductive matrix, and the second shielding layer is wrapped on the insulating layer. The second shielding layer is electrically connected to the first shielding layer and the grounding cable connector.

3. The battery device according to claim 2, characterized in that, The grounding cable connector and the second shielding layer are constructed as an integral part.

4. The battery device according to claim 3, characterized in that, The grounding cable connector is welded to the second shielding layer.

5. The battery device according to claim 2, characterized in that, At least one of the first shielding layer and the second shielding layer is provided with an elastic member to enable electrical contact between the first shielding layer and the second shielding layer.

6. The battery device according to claim 5, characterized in that, The mounting panel is provided with a through hole penetrating through the main body part and the protruding part. The conductive terminal passes through the through hole. The first shielding layer is provided with a first elastic member, and a part of the first elastic member extends to the inside of the through hole; the second shielding layer is provided with a second elastic member, and the second elastic member elastically abuts against the first elastic member.

7. The battery device according to claim 6, characterized in that, The first elastic member is arranged at both ends of the first shielding layer in the thickness direction of the conductive matrix, and the second elastic member is arranged at both ends of the second shielding layer in the thickness direction of the conductive matrix.

8. The battery device according to any one of claims 2 to 7, characterized in that, The conductive terminal includes a plugging part, which is arranged on the main body part and connects the extending part.

9. The battery device according to claim 8, characterized in that, The conductive matrix and the plugging part are connected by bolts.

10. The battery device according to any one of claims 2 to 7, characterized in that, The conductive matrix is a copper material part.

11. A high-voltage connection kit, characterized in that, Comprising: A male head part and a female head part that can be plugged and matched with each other. One of the male head part and the female head part is a high-voltage connection device. The high-voltage connection device includes a mounting panel, a first shielding layer, a conductive terminal and a grounding cable connector. The mounting panel includes a connected main body part and a protruding part. The first shielding layer is sleeved on the protruding part. The conductive terminal passes through the main body part and the protruding part and is used for electrically connecting with the battery cell assembly. The grounding cable connector is configured to be in electrical contact with the first shielding layer directly or indirectly.

12. An electrical device, characterized in that, Including the battery device according to any one of claims 1 to 10.

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