Battery device and electric device

Abstract

The utility model relates to the technical field of batteries, and provides a battery device and a power utilization device.The battery device comprises a box body, single batteries and a connector, and the single batteries are arranged in the box body; the connector comprises a connector body and a connecting terminal, the connector body is a concrete structure body, and the connector body is arranged in the box body in a penetrating manner; the connecting terminal is arranged in the connector body in a penetrating manner, the connecting terminal comprises a connecting part and an inserting part which are connected, the connecting part is arranged in the box body and is electrically connected with the battery monomers, and the inserting part is arranged outside the box body. According to the invention, the reliability of the battery device in an extreme thermal environment can be improved while good electrical performance is maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and particularly provides a battery device and a power utilization device. BACKGROUND

[0002] At present, the connectors commonly used in battery devices are mostly plastic shells, which integrate electrode terminals inside through injection molding to realize insulation and fixation. However, plastic materials are not resistant to high temperature and are easy to melt or burn under external fire, which leads to short circuit of electrode terminals or even sparking, causing thermal runaway of the battery and affecting the reliability of the battery device. CONTENT OF THE UTILITY MODEL

[0003] In view of the above technical problems, the purpose of the embodiments of the present application is to provide a battery device and a power utilization device, aiming to solve the problem of poor reliability of the existing battery device.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is:

[0005] In a first aspect, the embodiments of the present application provide a battery device, comprising:

[0006] a box body;

[0007] a battery monomer arranged in the box body;

[0008] a connector comprising a connector body and a connection terminal, the connector body being a concrete structure, the connector body being arranged in the box body; the connection terminal being arranged in the connector body, the connection terminal comprising a connection part and a plug-in part connected to each other, the connection part being arranged in the box body and electrically connected to the battery monomer, and the plug-in part being arranged outside the box body.

[0009] In the above technical solution, the connector body is designed as a concrete structure, which fully utilizes the high strength and fire resistance of the concrete structure, effectively overcoming the problem that the traditional plastic connector is easy to melt and deform under external fire, leading to short circuit and sparking of the electrode terminal. Moreover, the connection terminal adopts a segmented structure of internal connection and external connection, which not only ensures reliable electrical connection with the battery monomer, but also facilitates quick docking with external equipment. Therefore, the present application can maintain good electrical performance while improving the reliability of the battery device in extreme thermal environments.

[0010] In some embodiments, the connection terminal further comprises a main body part connected between the connection part and the plug-in part, the main body part being arranged in the connector body, and an insulation layer being arranged between the main body part and the connector body.

[0011] In the above technical solution, by arranging an insulation layer between the main body part of the connection terminal and the concrete connector body, the insulation performance of the connector is further improved.

[0012] In some embodiments, the connector body is provided with a through hole for the body part to pass through, and at least part of the hole wall of the through hole is provided with an insulating layer.

[0013] And / or, at least part of the surface of the body part is provided with an insulating layer.

[0014] In the above technical solution, by arranging the insulating layer on the hole wall of the through hole of the connector body and / or the surface of the body part of the connecting terminal, a reliable insulating barrier is formed, which can effectively solve the problem of insulation deterioration that may be caused by concrete materials in high humidity, high voltage or polluted environment, and significantly improve the electrical isolation performance between the connecting terminal and the connector body.

[0015] In some embodiments, the insulating layer is wrapped on the surface of the body part.

[0016] In the above technical solution, by wrapping the insulating layer on the surface of the body part of the connecting terminal, it is convenient for subsequent integrated casting with concrete, and the insulation reliability and sealing performance of the connection are enhanced.

[0017] In some embodiments, the connector body includes a body part and a mounting part arranged on the body part, the body part includes a first part and a second part, the first part passes through the box and is provided with a through hole; the second part is arranged outside the box and is provided with a plug-in cavity for accommodating the plug-in part, and the plug-in cavity is in communication with the through hole; the mounting part is arranged between the first part and the second part and is connected to the outside of the box.

[0018] In the above technical solution, by dividing the connector body into the first part passing through the box, the second part located outside the box, and the mounting part connecting the two and fixed to the box, the reasonable partition and efficient integration of structure and function are realized. Among them, the first part is provided with a through hole for the terminal to pass through, the second part is provided with a plug-in cavity to accommodate the plug-in part and reliably connect with the connector of the external equipment, and electrical connection is realized; the mounting part ensures that the connector body is stably mounted on the box, and the connection stability is improved.

[0019] In some embodiments, the mounting part includes a flange plate, and a sealing element is arranged at the connection between the flange plate and the box.

[0020] In the above technical solution, by designing the mounting part as a flange plate and arranging a sealing element between the flange plate and the battery box, the sealing performance of the connection between the connector and the box is improved.

[0021] In some embodiments, the side of the flange plate facing the box is provided with a sealing groove, and the sealing element is arranged in the sealing groove.

[0022] In the above technical solution, by arranging a sealing groove on the side of the flange plate facing the box, and embedding the sealing element in the groove, the installation convenience, positioning accuracy and sealing reliability of the sealing structure are improved.

[0023] In some embodiments, the flange is provided with a first connecting hole for connecting to the box through a first connecting member, and a first reinforcing member is arranged on the hole wall of the first connecting hole for the first connecting member to pass through.

[0024] In the above technical solution, the first reinforcing member arranged on the hole wall of the first connecting hole of the flange can improve the structural strength of the connection, effectively solving the problem that the concrete material is prone to crushing and cracking during the fastening process of the connecting member.

[0025] In some embodiments, the first reinforcing member is integrally formed with the flange.

[0026] In the above technical solution, the first reinforcing member is integrally formed with the flange during the concrete pouring process, achieving high integration and reliability improvement of the connection structure.

[0027] In some embodiments, a second reinforcing member is arranged in the concrete structure.

[0028] In the above technical solution, the second reinforcing member arranged in the concrete structure improves the overall structural strength, impact resistance and cracking resistance of the connector body, thereby improving the reliability of the battery device.

[0029] In some embodiments, the concrete structure and the connecting terminal are integrally formed.

[0030] In the above technical solution, the connecting terminal and the concrete structure are integrally poured and formed, which not only eliminates the complex post-assembly process of traditional connectors, significantly simplifying the manufacturing process, but also improves the mechanical anchoring strength, sealing performance and use reliability of the connection part through the full circumferential sealing of the terminal body by the concrete.

[0031] In some embodiments, the battery device further comprises a power distribution device arranged in the box and electrically connected with the battery monomer; the connecting part is provided with a second connecting hole for electrically connecting with the power distribution device through a second connecting member.

[0032] In the above technical solution, the second connecting hole is arranged on the connecting part of the connecting terminal, and the second connecting member is used to mechanically fix and electrically connect the power distribution device in the box, thereby enhancing the assembly convenience and reliability of the electrical connection.

[0033] In some embodiments, the box comprises a frame, and the connector body is connected to the frame.

[0034] In the above technical solution, the connector body is arranged on the frame of the box, which does not occupy the space at the top and bottom of the box, facilitates electrical connection with external equipment, and improves assembly convenience.

[0035] In some embodiments, the number of connection terminals is two, and the polarities of the two connection terminals are opposite.

[0036] In the above technical solution, two connection terminals with opposite polarities are set as the positive and negative output interfaces of the battery device, respectively, so as to form a complete charging and discharging circuit and meet the basic electrical function requirements.

[0037] Secondly, embodiments of this application also provide an electrical device, including: the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0038] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0042] Figure 3 An exploded view of the battery device provided in the embodiments of this application;

[0043] Figure 4 This is a schematic diagram of the connector structure provided in an embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the connector body provided in an embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the structure of the connection terminal provided in the embodiment of this application;

[0046] Figure 7 for Figure 2 A magnified view of part A;

[0047] Figure 8 for Figure 5 A magnified view of section B;

[0048] Figure 9 A second reinforcing member provided in the embodiment of the present application.

[0049] In the drawings, reference numerals:

[0050] 1000, vehicle; 100, battery device; 200, controller; 300, motor;

[0051] 11, box; 111, first box; 112, second box; 113, mounting hole;

[0052] 114, third connecting hole;

[0053] 12, battery cell;

[0054] 13, connector; 131, connector body; 1311, through hole; 1312, body part;

[0055] 13121, first part; 13122, second part; 13123, plug-in cavity; 13124, first part;

[0056] 13125, second part; 1313, mounting part; 13131, first connecting hole; 13132, sealing groove;

[0057] 132, connecting terminal; 1321, connecting part; 13211, second connecting hole; 1322, plug-in part;

[0058] 1323, first connecting terminal; 1324, second connecting terminal; 133, insulating layer; 134, sealing member;

[0059] 135, first connecting member; 136, first reinforcing member; 137, second reinforcing member;

[0060] 14, power distribution device. DETAILED DESCRIPTION

[0061] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0063] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0064] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0065] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0066] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0067] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the 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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0068] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0069] With the rapid development of new energy vehicles, energy storage systems and other fields, the reliability of battery devices as core energy storage units is increasingly valued. In the practical application of battery devices, the connector, as a key component for realizing power transmission between the battery monomer and the external device (referring to the power consumption or power supply device that interacts with the battery monomer), needs to have good electrical conductivity, insulation and environmental adaptability. At present, the common battery connector usually uses PBT (polybutylene terephthalate), PA (polyamide) and other plastic materials as the connector body, and embeds the electrode terminal therein through the injection molding process to realize the fixation and insulation protection of the terminal.

[0070] However, plastic materials generally have poor high-temperature resistance. When encountering external fire or high-temperature environment (such as vehicle collision fire, external fire, etc.), the plastic shell is easy to soften, melt and even burn, resulting in the loss of support and insulation protection of the internal electrode terminal, and further causing short circuit, arc discharge or sparking between the terminals. Such failures not only may cause the failure of the connector, but also may ignite the combustible material inside the battery, inducing thermal runaway and affecting the reliability of the battery device.

[0071] Based on this, the application provides a concrete connector, which discards the traditional flammable and high-temperature-resistant plastic connector body and uses a concrete structure as the connector body. By using the high strength and fire-resistant properties of the concrete structure, the connector can still maintain complete insulation and fixation function under external fire conditions. By penetrating the concrete body through the battery box and arranging the segmented connection terminal (connecting the battery monomer and the external power consumption device) therein, the normal electrical connection function is ensured, and the hidden danger of short circuit and fire caused by the melting of the connector is fundamentally solved, which significantly improves the reliability of the battery device in extreme thermal environment.

[0072] The battery device disclosed in the embodiments of the application can be used in various power consumption devices using the battery device as a power source or various energy storage systems using the battery device as an energy storage element. The power consumption device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric aircraft toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0073] The following embodiments are described by taking a power consumption device of an embodiment of the application as a vehicle for convenience of description.

[0074] Reference Figure 1As shown, the vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, head, or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation, and driving.

[0075] In some embodiments, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0076] Referring to Figure 2 and Figure 3 As shown, the battery device mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 12 connected in series, in parallel, or in a mixed connection through a busbar component.

[0077] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 12.

[0078] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells 12 into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 12 with a cable tie.

[0079] In some embodiments, the battery device can be a battery pack including a box 11 and one or more battery cell assemblies accommodated in the box 11.

[0080] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box 11 by fixing the battery module in the box 11.

[0081] As an example, the battery cell assembly can also be accommodated in the box 11 by directly fixing a plurality of battery cells 12 in the box 11.

[0082] As an example, the housing 11 may include a first housing 111 and a second housing 112. The first housing 111 and the second housing 112 are fastened together to form a closed space inside the housing 11 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 111 may be a top cover or a bottom plate.

[0083] As an example, the housing 11 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 11 forms an enclosed space to accommodate the battery cell assembly.

[0084] In some embodiments, the housing 11 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 11 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 11 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0085] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0086] In this embodiment, the battery cell 12 can be a secondary battery, which refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. The battery cell 12 can be flat, cuboid, or other shapes.

[0087] The battery cell 12 can be a 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 to this.

[0088] The following is combined Figures 2 to 9 The present application provides a detailed description of the battery device and power-consuming device through specific embodiments.

[0089] In some embodiments, refer to Figures 2 to 6 As shown, this application provides a battery device, including: a housing 11, a battery cell 12, and a connector 13. The battery cell 12 is disposed within the housing 11; the connector 13 includes a connector body 131 and a connecting terminal 132. The connector body 131 is a concrete structure and passes through the housing 11; the connecting terminal 132 passes through the connector body 131 and includes a connecting portion 1321 and a plug-in portion 1322 connected together. The connecting portion 1321 is disposed within the housing 11 and electrically connected to the battery cell 12, while the plug-in portion 1322 is disposed outside the housing 11.

[0090] The box body 11 serves as a shell of the battery device and can accommodate one or more battery monomers 12. The box body 11 can be provided with a mounting hole 113 for facilitating the insertion of the connector body 131. The box body 11 can be made of a material with certain strength, such as steel, aluminum, etc.

[0091] As shown in Figure 3 The battery monomers 12 can be arranged in multiple numbers, and the multiple battery monomers 12 can be arranged along the length direction X of the box body 11 to form one or more battery monomer assemblies, and the multiple battery monomer assemblies can be arranged along the height direction Z of the box body 11.

[0092] The connector 13 refers to an interface component arranged on the box body 11 of the battery device and used for realizing the electrical connection between the battery monomers 12 and external equipment (such as a vehicle, a charging pile, etc.). The connector 13 includes a connector body 131 and a connection terminal 132. The connector body 131 serves as a shell of the connector 13 and is made of a concrete structure and is inserted into the mounting hole 113 on the frame of the box body 11 to serve as a support and an insulating carrier. The concrete structure refers to a structure made of concrete material. The concrete structure refers to a composite material structure in which aggregate is cemented into a whole by cementitious material. According to the different cementitious materials, the concrete can include cement concrete, gypsum concrete, Portland cement concrete, water glass concrete, asphalt concrete, polymer concrete, etc. For example, the cement concrete is made of cement as the cementitious material, sand and gravel as the aggregate, and water (which can contain additives and admixtures) in a certain proportion, and is obtained by mixing. The concrete structure has simple manufacturing process, low cost, and high structural strength and fire resistance.

[0093] The connection terminal 132 refers to an electrically conductive component in the battery device for conducting current and realizing the electrical connection between the internal battery monomers 12 and external equipment. The connection terminal 132 is inserted into the concrete connector body so that the connection part 1321 thereof extends into the box body 11 to facilitate the electrical connection with the battery monomers 12 and realize the current transmission, and the plug-in part 1322 extends to the outside of the box body 11 to be plugged with the connector of the external equipment, thereby realizing the charging and discharging function. Such an internal-external separation structure design not only facilitates assembly and maintenance, but also provides fixation and thermal isolation for the terminal inserted therein by the concrete body, thereby preventing the terminal from being offset or short-circuited in the case of fire.

[0094] In some embodiments, the connection terminal 132 can include a pin, a wire, a copper bar, etc.

[0095] Optionally, the connection terminal 132 can use a copper bar (i.e., a flat copper conductive bar) as the conductive main body. Compared with the traditional pin or wire, the copper bar has a larger conductive cross-sectional area, lower contact resistance, and better heat dissipation performance, and can improve the conductive performance and thermal management capability of the connector 13 under the condition of large current.

[0096] It can be understood that, in a normal working state, the current passes through the battery monomer 12, the connector 13 and the external device to complete the charging and discharging circuit. The concrete connector body mainly plays the role of insulation support and heat protection in this process and does not participate in conduction. When encountering an external fire or other extreme heat environment, the concrete structure can effectively block the spread of external flames to the inside of the box 11 and maintain the position of the connection terminal 132 stable, avoiding the displacement, lapping or short circuit of the terminal caused by the melting of the plastic shell, so as to inhibit the generation of electric arc and thermal runaway reaction.

[0097] Therefore, the battery device provided by the embodiments of the present application can improve the reliability in an extreme heat environment while maintaining good electrical performance.

[0098] In some embodiments, referring to Figures 4 to 6 As shown, the connection terminal 132 further includes a main body portion connected between the connection portion 1321 and the plug-in portion 1322, the main body portion is arranged through the connector body 131, and an insulation layer 133 is arranged between the main body portion and the connector body 131.

[0099] The connection terminal 132 includes a connection portion 1321 (inside the box 11, connected to the battery monomer 12), a plug-in portion 1322 (outside the box 11, connected to the external device) and a main body portion between the two. The main body portion refers to the portion connected to the concrete connector body, which penetrates the concrete connector body and plays the role of transmitting current and supporting fixation.

[0100] In some embodiments, the main body portion can be made of conductive metal materials such as aluminum and copper.

[0101] In some embodiments, the shape of the main body portion can be rectangular, circular or the like, so as to be matched with the shape of the through hole 1311 provided on the connector body 131 for the main body portion to pass through.

[0102] The insulation layer 133 (such as polyimide film, ceramic coating, mica sheet, high-temperature-resistant insulating sleeve, silica gel or epoxy resin, etc.) arranged between the main body portion and the concrete connector body can improve the electrical isolation capability between the terminal and the body, effectively prevent the risk of electric leakage caused by moisture absorption, surface defects or high-temperature aging of the concrete material, and improve the electrical insulation performance and environmental adaptability of the connector 13.

[0103] In some embodiments, the connection terminal 132 can be an integrally formed structure, such as formed by an integrally forming process such as additive manufacturing, stamping, die casting, etc. That is, the connection portion 1321, the main body portion and the plug-in portion 1322 are integrally formed and connected. Alternatively, as shown in Figure 6 The connection terminal 132 can be a copper bar integrally formed by stamping.

[0104] In some embodiments, referring to Figure 5 As shown, the connector body 131 is provided with a through hole 1311 for the body part to pass through, and at least part of the hole wall of the through hole 1311 is provided with an insulating layer 133. Optionally, the entire hole wall of the through hole 1311 is provided with the insulating layer 133.

[0105] The connector body 131 is provided with a through hole 1311 for the body part of the connecting terminal 132 to pass through. Since the surface of the concrete may still have a certain risk of electrical conduction under humid, contaminated or high-voltage conditions, the insulating layer 133 is arranged on the hole wall of the through hole 1311, which can effectively block the potential conduction path between the terminal and the concrete, and improve the electrical isolation performance between the connecting terminal 132 and the connector body 131.

[0106] In some embodiments, referring to Figure 6 As shown, at least part of the surface of the body part is provided with an insulating layer 133.

[0107] By arranging the insulating layer 133 on the surface of the body part of the connecting terminal 132, a reliable insulating barrier is formed, which can effectively solve the problem of insulation deterioration that may be caused by the concrete material under high humidity, high voltage or contaminated environment, and improve the electrical isolation performance between the connecting terminal 132 and the connector body 131.

[0108] Optionally, the insulating layer 133 is wrapped on the surface of the body part. That is, each surface of the body part is provided with the insulating layer 133, thereby forming a surrounding coverage, effectively isolating the connecting terminal 132 and the connector body 131, and enhancing the insulation reliability.

[0109] In addition, before pouring, a material with high temperature resistance and high insulation performance (such as a polyimide film, a ceramic coating, a mica sheet, a high-temperature-resistant insulating sleeve, silicone or epoxy resin, etc.) can be completely wrapped on the surface of the body part of the connecting terminal 132 to form a continuous and dense insulating layer 133. Then, the pre-insulated connecting terminal 132 is directly embedded in the concrete pouring mold, and then the concrete pouring and curing are performed. In this process, the concrete tightly covers the outer surface of the insulating layer 133 to form a three-layer composite structure of “terminal, insulating layer, concrete”, which improves the installation stability of the connecting terminal 132, eliminates the assembly gap, and improves the sealing performance of the connection.

[0110] In some embodiments, referring to Figures 4 to 7As shown, the connector body 131 includes a body portion 1312 and a mounting portion 1313 provided on the body portion 1312, the body portion 1312 includes a first portion 13121 and a second portion 13122, the first portion 13121 is provided in the battery box 11 and is provided with a through hole 1311; the second portion 13122 is provided outside the battery box 11 and is provided with a plug-in cavity 13123 for accommodating the plug-in portion 1322 of the connecting terminal 132, and the plug-in cavity 13123 is in communication with the through hole 1311; the mounting portion 1313 is provided between the first portion 13121 and the second portion 13122 and is connected to the outside of the battery box 11.

[0111] The frame of the battery box 11 is provided with a mounting hole 113, the first portion 13121 of the body portion 1312 is provided in the battery box 11 through the mounting hole 113, the inside of the first portion 13121 is provided with a through hole 1311 for the main body portion of the connecting terminal 132 to pass through, which provides a through channel for the terminal and forms a fireproof and insulating barrier together with the concrete material to protect the inside of the battery from external heat / electricity interference. The second portion 13122 is located outside the battery box 11 and is provided with a plug-in cavity 13123 for accommodating the plug-in portion 1322 of the connecting terminal 132 and for plug-in cooperation with the connector of the external device. It can be understood that the through hole 1311 is in direct communication with the plug-in cavity 13123, forming a continuous electrical channel from the inside of the battery to the external device, so that the main body portion of the connecting terminal 132 can smoothly pass through the concrete body and accurately position the plug-in portion 1322 in the plug-in cavity 13123, ensuring reliable electrical contact with the external connector.

[0112] The mounting portion 1313 is provided between the first portion 13121 and the second portion 13122 and can be connected to the outer wall of the battery box 11 by bolts, screws or buckles, etc., as an anchoring structure between the entire connector body 131 and the battery box 11, to ensure that the connector 13 is stably mounted on the battery box 11 and to improve the connection stability.

[0113] The mounting portion 1313 can be a local protrusion, a ring-shaped protruding ring on the body portion 1312, or a flange plate provided on the body portion 1312.

[0114] In some embodiments, referring to Figure 5 and Figure 7 The mounting portion 1313 includes a flange plate, and a sealing member 134 is provided at the connection between the flange plate and the battery box 11.

[0115] The flange plate is provided with a first connecting hole 13131, and the connector body 131 can be tightly mounted on the outer wall of the battery box 11 by a first connecting member 135 such as a bolt or a screw, to ensure stable connection during long-term use.

[0116] And, a sealing member 134 is arranged at the joint between the flange plate and the box body 11, which can improve the sealing performance of the joint, prevent external moisture, dust and other pollutants from entering the box body 11, and avoid the flame or high-temperature gas entering the box body 11 through the installation gap in case of fire, thereby improving the reliability of the battery device.

[0117] In some embodiments, the sealing member 134 can be a sealing ring, a sealing gasket, etc. The material of the sealing member 134 can be rubber, silicone, etc.

[0118] In some embodiments, referring to Figure 8 , the side of the flange plate facing the box body 11 is provided with a sealing groove 13132, and the sealing groove 13132 is provided with a sealing member 134.

[0119] The sealing groove 13132 is used to provide a mounting and limiting space for the sealing member 134 (such as an O-ring, a rectangular ring or a special-shaped sealing ring), to ensure that it will not be offset, twisted or fallen off during assembly, and to avoid sealing failure.

[0120] The sealing member 134 can be embedded in a concrete pouring mold, and then the concrete is poured and solidified, and the connector body 131 is integrally formed, at which time the sealing groove 13132 accommodating the sealing member 134 is formed. Alternatively, the sealing member 134 can also be embedded in the formed sealing groove 13132 after the concrete connector body is formed. The flange plate of the connector body 131 can be directly aligned and installed on the box body 11, without the need for additional manual adjustment or auxiliary fixation of the sealing member 134, thereby simplifying the assembly process.

[0121] In some embodiments, referring to Figure 7 and Figure 8 , the flange plate is provided with a first connecting hole 13131, the first connecting hole 13131 is used to be connected to the box body 11 through a first connecting member 135, and the hole wall of the first connecting hole 13131 is provided with a first reinforcing member 136 for the first connecting member 135 to pass through.

[0122] The flange plate can be provided with a plurality of first connecting holes 13131, for example, a first connecting hole 13131 is arranged at each of the four top corners of the flange plate, which corresponds to the third connecting hole 114 on the frame of the box body 11 one by one, and is connected through a bolt or a screw or the like first connecting member 135.

[0123] Since stress concentration is easily generated around the connecting hole under the action of the pre-tightening force of the connecting member or external vibration load, the hole wall is cracked, even the whole is crushed, which affects the sealing performance and connection reliability. Therefore, the first reinforcing member 136 is arranged in the hole wall of the first connecting hole 13131 of the flange plate, which can improve the structural strength of the joint and effectively solve the problem that the concrete material is easily crushed and cracked during the fastening process of the connecting member.

[0124] In some embodiments, the first reinforcing member 136 can be a metal bushing, a threaded sleeve, or the like.

[0125] In some embodiments, the first reinforcing member 136 can be pre-embedded during concrete pouring or pressed / bonded after solidification.

[0126] In some embodiments, the first reinforcing member 136 is integrally formed with the flange plate.

[0127] In the above technical solution, by integrally forming the first reinforcing member 136 with the flange plate during concrete pouring, the high integration and reliability of the connection structure are achieved. This design not only eliminates the subsequent drilling, pressing, and other complex processes, simplifying the manufacturing and assembly process, but also significantly enhances the bonding strength between the first reinforcing member 136 and the concrete body through pre-embedded anchoring, effectively preventing the first reinforcing member 136 from loosening or pulling out during the fastening process of the connecting member.

[0128] In some embodiments, referring to Figure 9 , a second reinforcing member 137 is provided in the concrete structure, and the second reinforcing member 137 is used to improve the structural stability of the concrete structure.

[0129] By providing the second reinforcing member 137 in the concrete structure, the inherent defects of the concrete material, such as high brittleness and low tensile strength, are effectively overcome, and the overall structural strength, impact resistance, and crack resistance of the connector body 131 are improved. The second reinforcing member 137 can be made of steel bars, fibers (such as steel fibers, basalt fibers, carbon fibers, etc.), or metal skeletons (such as steel wire mesh), and is integrally poured and formed with the concrete, enhancing the structural stability of the connector 13 under complex working conditions such as insertion, vibration, and thermal cycling, thereby improving the reliability of the battery device.

[0130] In some embodiments, referring to Figure 4 , the concrete structure and the connecting terminal 132 are integrally formed.

[0131] Traditional connectors usually prepare the shell first, and then embed the connecting terminal through pressure welding, screwing, or the like, which is complex and prone to assembly errors. The integrally poured and formed connection terminal 132 of the present application is directly integrated into the concrete body as an embedded part, eliminating the subsequent assembly, positioning, and fastening steps, significantly simplifying the manufacturing process, and greatly improving the mechanical anchoring strength, sealing performance, and use reliability of the connection part through the full circumferential sealing of the terminal body by the concrete.

[0132] In some embodiments, referring to Figure 3 and Figure 6As shown, the battery device further comprises a power distribution device 14, which is arranged in the box 11 and is electrically connected with the battery monomer 12; the connecting portion 1321 is provided with a second connecting hole 13211, which is used for electrically connecting with the power distribution device 14 through a second connecting member.

[0133] The power distribution device 14 is used for controlling the operation of the high-voltage circuit in the electrical device; wherein the "pressure" in the high-voltage circuit refers to voltage, and the high-voltage circuit refers to a circuit with a voltage exceeding 60V; for example, the power distribution device 14 can be a high-voltage distribution box, which can refer to a power distribution and management device responsible for the high-voltage circuit in the electrical device, for example: PDU (Power Distribution Unit, high-voltage distribution unit) applied in new energy vehicles, wherein the function of the PDU is to be responsible for the power distribution and management of the high-voltage circuit in the new energy vehicle, to provide the whole vehicle with functions such as charge and discharge control, high-voltage component power-on control, circuit overload and short circuit protection, high-voltage sampling, low-voltage control, and protection and monitoring of the operation of the high-voltage circuit; the high-voltage distribution box can also refer to a component applied in the battery device and used for controlling the charge and discharge control of the battery, for example: BDU (Battery Disconnect Unit, battery pack disconnect unit), which is a high-voltage distribution box designed for the battery charge and discharge control system.

[0134] The connecting portion 1321 of the connecting terminal 132 is provided with a second connecting hole 13211, which can be mechanically fixed and electrically connected with the power distribution device 14 in the box 11 by using a second connecting member such as a bolt or a screw, thereby enhancing the assembly convenience and reliability of the electrical connection.

[0135] In some embodiments, referring to Figure 3 and Figure 7 As shown, the box 11 comprises a frame, and the connector body 131 is connected to the frame.

[0136] The frame of the box 11 comprises a side end wall along the length direction X, and a mounting hole 113 can be arranged on the side end wall, so that the first portion 13121 of the connector body 131 can pass through the mounting hole 113, and a third connecting hole 114 corresponding to the first connecting hole 13131 on the flange plate of the connector body 131 can be arranged on the edge of the mounting hole 113, so that the connector 13 can be connected to the frame of the box 11 by using the first connecting member 135, without occupying the space on the top and bottom of the box 11, facilitating the electrical connection with external equipment, and improving the assembly convenience.

[0137] In some embodiments, referring to Figure 4 As shown, the number of the connecting terminals 132 is two, and the polarities of the two connecting terminals 132 are opposite.

[0138] By setting two connection terminals 132 with opposite polarities as positive and negative output interfaces of the battery device, a complete charging and discharging circuit is formed to meet the basic electrical function requirements.

[0139] In some embodiments, referring to Figure 4 and Figure 5 , the first part 13121 of the connector body 131 includes a first portion 13124 and a second portion 13125 distributed vertically along the height direction Z, the first portion 13124 and the second portion 13125 are respectively provided with through holes 1311, and along the extension direction (i.e. the length direction X) of the through holes 1311, the length of the first portion 13124 is less than the length of the second portion 13125, so that the first part 13121 forms a stepped structure.

[0140] The two connection terminals 132 include a first connection terminal 1323 and a second connection terminal 1324, the length of the first connection terminal 1323 is less than the length of the second connection terminal 1324, the main body part of the first connection terminal 1323 is arranged through the through hole 1311 of the first portion 13124, the connecting part 1321 of the first connection terminal 1323 extends out of the first portion 13124, and the plug-in part 1322 of the first connection terminal 1323 extends into the plug-in cavity 13123 of the second part 13122 of the connector body 131; the main body part of the second connection terminal 1324 is arranged through the through hole 1311 of the second portion 13125, the connecting part 1321 of the second connection terminal 1324 extends out of the second portion 13125, and the plug-in part 1322 of the second connection terminal 1324 extends into the plug-in cavity 13123 of the second part 13122 of the connector body 131; and the connecting part 1321 of the first connection terminal 1323 is located above the second portion 13125 and does not protrude beyond the edge of the second portion 13125 along the length direction X, i.e. it is located in the space where the stepped structure is located, so that the connecting part 1321 of the first connection terminal 1323 and the connecting part 1321 of the second connection terminal 1324 are arranged in a staggered manner along the length direction X and the height direction Z, which can further reduce the risk of short circuit caused by the two terminals overlapping, improve the electrical isolation performance, and thus improve the reliability of the battery device.

[0141] In one specific example, referring to Figures 2 to 9 , the application provides a concrete connector, which mainly includes a concrete connector body, positive and negative copper bar connection terminals, an insulation layer, a metal framework, a metal bushing, and a sealing gasket.

[0142] During manufacturing, the main body parts of the positive and negative copper bar connection terminals are first provided with insulation layers for protection, and then the positive and negative copper bar connection terminals with insulation layers, the metal framework, the metal bushing, and the sealing gasket are fixed through a concrete pouring mold, followed by concrete integrated pouring and molding. After the concrete solidifies, a concrete connector body connected with the above components is formed, thereby obtaining the concrete connector.

[0143] In some embodiments, the application also provides a power consuming device, comprising the battery device 100 of any of the above embodiments, wherein the battery device 100 is configured to provide power.

[0144] The power consuming device can be an apparatus or a system of any of the above applications of the battery device 100.

[0145] The above merely provides the preferred embodiments of the application, but is not intended to limit the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the application shall be included in the protection scope of the application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a box body; a battery cell arranged in the box body; a connector comprising a connector body and a connecting terminal, the connector body being a concrete structure, the connector body being arranged in the box body; the connecting terminal being arranged in the connector body, the connecting terminal comprising a connecting portion and a plug-in portion connected to each other, the connecting portion being arranged in the box body and being electrically connected to the battery cell, the plug-in portion being arranged outside the box body.

2. The battery device according to claim 1, characterized by The connecting terminal further comprises a main body portion connected between the connecting portion and the plug-in portion, the main body portion being arranged in the connector body, and an insulation layer being arranged between the main body portion and the connector body.

3. The battery device of claim 2, wherein, The connector body is provided with a through hole for the main body portion to pass through, at least part of the hole wall of the through hole being provided with the insulation layer. And / or, at least part of the surface of the main body portion is provided with the insulation layer.

4. The battery device of claim 3, wherein The insulation layer is wrapped on the surface of the main body portion.

5. The battery device of claim 3, wherein The connector body comprises a body portion and a mounting portion arranged on the body portion, the body portion comprising a first portion and a second portion, the first portion being arranged in the box body and being provided with the through hole; the second portion being arranged outside the box body and being provided with a plug-in cavity accommodating the plug-in portion, and the plug-in cavity being in communication with the through hole; the mounting portion being arranged between the first portion and the second portion and being connected to the outside of the box body.

6. The battery device of claim 5, wherein, The mounting portion comprises a flange plate, and a sealing element is arranged at the connection between the flange plate and the box body.

7. The battery device of claim 6, wherein The side of the flange plate facing the box body is provided with a sealing groove, and the sealing groove is provided with the sealing element.

8. The battery device of claim 6, wherein The flange plate is provided with a first connecting hole for connecting to the box body through a first connecting element, and the hole wall of the first connecting hole is provided with a first reinforcing element for the first connecting element to pass through.

9. The battery device of claim 8, wherein, The first reinforcing element and the flange plate are in an integral molding structure.

10. The battery device of claim 1, wherein The concrete structure is provided with a second reinforcing element.

11. The battery device of claim 1, wherein The concrete structure and the connecting terminal are in an integral molding structure.

12. The battery device of claim 1, wherein, The battery device further comprises a power distribution device arranged in the box body and electrically connected to the battery cell; the connecting portion is provided with a second connecting hole for electrically connecting to the power distribution device through a second connecting element.

13. The battery device according to any one of claims 1 to 12, characterized by, The box body comprises a frame, and the connector body is connected to the frame.

14. The battery device according to any one of claims 1 to 12, characterized by, The number of the connecting terminals is two, and the polarities of the two connecting terminals are opposite.

15. An electrical device, comprising: The battery device comprises: The battery device according to any one of claims 1 to 14 is used to provide electric energy.

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