Switching integrated device and battery system

Abstract

The embodiment of the application discloses a switch integrated device and a battery system, which comprises a base, a relay assembly, a fuse assembly and a conductive connecting piece, the relay assembly and the fuse assembly are integrated on the base, and the first connecting terminal and the second connecting terminal for external connection are formed respectively, the conductive connecting piece is used for connecting the relay assembly and the fuse assembly respectively, so that the relay and the fuse can be integrated, the requirement that the relay and the fuse need to be independently installed is reduced, the relay and the fuse are avoided to be produced separately, the number of parts of the battery system is reduced, and material cost and installation cost are reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a switch integrated device and battery system. Background Technology

[0002] In a battery system, relays are required to control the charging and discharging of the entire battery system. In order to protect the battery system circuit under short-circuit conditions, a fuse or smart fuse needs to be connected in series in the battery system circuit. Although this can improve the safety of the battery system, it will increase the cost of battery system components and the installation cost will be high. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides a switch integration device and a battery system, aiming to solve the technical problem of high component and installation costs in existing battery systems.

[0004] To address the aforementioned problems, in a first aspect, this application provides a switch integrated device, comprising: Base; The relay assembly is mounted on the base and has a first terminal for external connection; A fuse assembly is mounted on a base and has a second terminal for external connection; Conductive connectors are used to connect to relay assemblies and fuse assemblies, respectively.

[0005] Furthermore, in the switch integration device provided in this application, the conductive connector is used to make sliding electrical connections with the relay assembly and the fuse assembly, respectively.

[0006] Furthermore, in the switch integration device provided in this application, the relay assembly includes an overcurrent block and at least one coil; The overcurrent block is slidably electrically connected to the conductive connector to form the first terminal; when the coil is conductive, it drives the conductive connector to move to electrically connect the overcurrent block to the fuse assembly, thereby eliminating the mechanical transmission parts of the traditional relay and reducing the number of parts.

[0007] Furthermore, in the integrated switch device provided in this application, the base is provided with a first receiving groove, and the coil is disposed in the first receiving groove, thereby achieving stable fixation of the coil on the base, preventing displacement or tilting during electromagnetic driving, and ensuring that the movement trajectory of the conductive connector is consistent with the direction of the coil axis.

[0008] Furthermore, in the switch integration device provided in this application, the conductive connector includes a conductive slider; The conductive slider is located between the current block and the coil. When the coil is conductive, it drives the conductive slider to move, thereby electrically connecting the current block and the fuse assembly. This achieves rigid contact instead of elastic contact and improves the current carrying capacity.

[0009] Furthermore, in the switch integration device provided in this application, the switch integration device also includes an encapsulation cover; The encapsulation cover is connected to the base to encapsulate the relay assembly, fuse assembly, and conductive connectors, reducing the number of housing parts and assembly time, and lowering the manufacturing cost of the battery system circuit control module.

[0010] Furthermore, in the switch integration device provided in this application, the conductive connector also includes an elastic element; One end of the elastic element is fixedly connected to the encapsulation cover, and the other end of the elastic element is fixedly connected to the conductive slider. The preload of the elastic element is adjusted through the assembly relationship between the encapsulation cover and the base, saving the space required to set up a separate installation structure for the elastic element.

[0011] Furthermore, in the switch integration device provided in this application, the relay assembly also includes a first traction wire and a second traction wire; The first and second traction wires pass through the base to electrically connect the two ends of the coil, which prevents the wiring from becoming loose, improves the reliability of the electrical connection, and enhances the stability of the integrated switch device.

[0012] Furthermore, in the switch integration device provided in this application, the fuse assembly includes a current bus; One end of the busbar forms a second terminal, and the other end of the busbar is slidably electrically connected to the conductive connector. A narrow diameter is provided on the busbar, which realizes the structural integration of the fuse protection function and the relay assembly, reducing the component cost and installation complexity of the battery system.

[0013] Furthermore, in the switch integration device provided in this application, the fuse assembly also includes a narrow-diameter fracture material; The base also has a second receiving groove, in which the narrow-diameter disconnecting material is placed. The narrow-diameter material is located above the second receiving groove, which avoids the protection failure caused by the heat accumulation delay of traditional fuses and effectively prevents the risk of thermal runaway caused by continuous short circuit current in the battery system.

[0014] Furthermore, in the switch integration device provided in this application, the narrow-path disconnecting substance includes explosives.

[0015] Furthermore, in the switch integration device provided in this application, the fuse assembly also includes a third traction wire and a fourth traction wire; The third and fourth traction wires pass through the base and extend into the second receiving slot, eliminating the need for external wiring terminals. At the same time, the base structure provides physical protection for the traction wires, avoiding the risk of short circuits caused by exposed wires.

[0016] Secondly, this application also provides a battery system including the switch integration device provided in the first aspect, wherein the switch integration device is connected to the main circuit of the battery system via a first terminal and a second terminal.

[0017] The switch integration device provided in this application includes a base, a relay assembly, a fuse assembly, and a conductive connector. The relay assembly and the fuse assembly are both integrated on the base and respectively form a first terminal and a second terminal for external connection. The conductive connector is used to connect to the relay assembly and the fuse assembly respectively, thereby realizing the integration of the relay and the fuse, reducing the need for independent installation of the relay and the fuse, avoiding the separate production of the relay and the fuse, reducing the number of parts in the battery system, and reducing material costs and installation costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the integrated switch device provided in the embodiments of this application; Figure 2 Another schematic diagram of the integrated switch device provided in the embodiments of this application; Figure 3 An exploded view of the switch integration device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the base provided in an embodiment of this application.

[0020] Figure label: 100. Base; 101. First receiving slot; 102. Second receiving slot; 200. Relay assembly; 201. First terminal; 202. Current block; 203. Coil; 204. First traction wire; 205. Second traction wire; 300. Fuse assembly; 301. Second terminal; 302. Current busbar; 303. Narrow diameter; 304. Explosive; 305. Third traction wire; 306. Fourth traction wire; 400. Conductive connector; 401. Conductive slider; 402. Elastic element; 500. Encapsulation cover. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be further understood that the term “and / or” as used in this application specification and the appended claims refers to any combination of one or more of the associated listed items, as well as all possible combinations, and includes such combinations.

[0025] Furthermore, in this application, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific implementation.

[0026] In related technologies, relays are mainly used to control the charging and discharging process of battery systems, while fuses are used to cut off the circuit to protect the battery system under abnormal conditions such as short circuits. However, relays and fuses are often designed, manufactured, and installed separately, which requires separate procurement and assembly, increasing component and installation costs. Furthermore, separate placement occupies more installation space, hindering the miniaturization design of battery systems. Additionally, the connection lines between relays and fuses increase the complexity of the battery system and the risk of failure.

[0027] To address this, this application provides a switch integration device comprising a base, a relay assembly, a fuse assembly, and a conductive connector. The relay assembly and the fuse assembly are both integrated on the base and respectively form a first terminal and a second terminal for external connection. The conductive connector is used to connect to the relay assembly and the fuse assembly respectively, thereby enabling the integration of the relay and the fuse, reducing the need for independent installation of the relay and the fuse, avoiding separate production of the relay and the fuse, reducing the number of parts in the battery system, and reducing material and installation costs.

[0028] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the integrated switch device provided in the embodiments of this application; Figure 2 Another schematic diagram of the integrated switch device provided in the embodiments of this application; Figure 3 An exploded view of the switch integrated device provided in the embodiments of this application.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides a switch integrated device, which includes: Base 100; The relay assembly 200 is mounted on the base 100 and has a first terminal 201 for external connection; The fuse assembly 300 is mounted on the base 100 and has a second terminal 301 for external connection; The conductive connector 400 is connected to the relay assembly 200 and the fuse assembly 300 respectively.

[0030] In this application, the base 100 serves as a support structure for the relay assembly 200 and the fuse assembly 300. Specifically, it can be implemented using an injection-molded engineering plastic housing. The housing surface can be provided with slots and positioning posts for supporting the relay assembly 200 and the fuse assembly 300. The relay assembly 200 is an electromagnetic switch device for controlling the circuit's on / off state. Specifically, it can be implemented using a spring structure with a moving contact. The first terminal 201 of the relay assembly 200 can be connected to the positive busbar of the battery via a copper bolt. The fuse assembly 300 is a circuit breaker device for overcurrent protection. Specifically, it can be implemented using a ceramic housing structure with a fusible metal strip. The second terminal 301 of the fuse assembly 300 can be connected to the negative busbar of the battery via a soldered terminal. The conductive connector 400 is a moving conductor for dynamic conduction. Specifically, it can be implemented using a silver-plated copper alloy slider.

[0031] Specifically, the base 100 provides a common mounting reference surface for the relay assembly 200 and the fuse assembly 300, and can eliminate the cumulative errors caused by separate installation of the relay and fuse in the battery system. The first terminal 201 of the relay assembly 200 and the second terminal 301 of the fuse assembly 300 are respectively connected to the two poles of the battery main circuit, forming a complete current path. The conductive connector 400 moves along a predetermined trajectory inside the base 100. When the relay coil 203 is energized, it pushes the conductive connector 400 to slide to the contact position, making the relay contacts conduct with the fuse electrodes. Under overload conditions, the fuse assembly 300 melts first to cut off the circuit. At this time, the conductive connector 400 resets due to the loss of electromagnetic driving force, realizing a dual protection mechanism.

[0032] Furthermore, the conductive connector 400 is slidably electrically connected to the relay assembly 200 and the fuse assembly 300 respectively, thereby realizing the electrical connection between the relay assembly 200 and the fuse assembly 300 to conduct the main circuit of the battery system.

[0033] This application integrates the mounting interfaces of the relay and fuse into a single base 100, reducing the number of bolt tightening operations in the assembly process of the battery system's main circuit by two, thereby eliminating the need for the connecting copper busbar between the relay and fuse. The sliding contact method of the conductive connector 400 eliminates the wiring harness between the relay output and fuse input terminals in traditional solutions, while also reducing temperature rise issues caused by contact impedance. Furthermore, the integrated switch device integrates the functions of the relay and fuse, achieving integration of the relay and fuse, allowing both relays and fuses to share a protective housing, improving overall shock resistance, and avoiding the misalignment risks that may occur with separate installations.

[0034] In some embodiments, such as Figure 2 and Figure 3 As shown, the relay assembly 200 includes a current block 202 and at least one coil 203; wherein the current block 202 is slidably electrically connected to the conductive connector 400 and forms a first terminal 201; when the coil 203 is in a conductive state, it drives the conductive connector 400 to move so as to electrically connect the current block 202 to the fuse assembly 300.

[0035] In this application, the current block 202 is a block structure with conductive properties, which can be made of copper alloy. The surface of the current block 202 can be provided with a sliding contact surface to form an electrical connection with the conductive connector 400, and can serve as an access point for the main circuit of the battery. The coil 203 is a conductor wound into a spiral shape, which can be made by winding enameled wire on an insulating frame. When energized, it generates an electromagnetic force to drive the conductive connector 400 to move. The sliding electrical connection is a connection method that maintains electrical contact through relative sliding, which allows the conductive connector 400 to achieve conduction of the battery circuit after movement.

[0036] Specifically, the overcurrent block 202 can be directly used as the first terminal 201 of the battery main circuit, eliminating the need for external wiring in traditional relays. When the coil 203 is energized, it generates an electromagnetic force that acts on the conductive connector 400, causing it to slide along a predetermined trajectory. This contacts the conductive part of the overcurrent block 202 with the fuse assembly 300, thus replacing the independent drive mechanism and contact system in traditional relays. This allows the relay function to be directly realized through the physical connection between the overcurrent block 202 and the fuse assembly 300. When the coil 203 is de-energized, the conductive connector 400 can return to its initial position via a reset mechanism, disconnecting the overcurrent block 202 from the fuse assembly 300.

[0037] This application improves circuit reliability by designing the overcurrent block 202 as an integrated terminal, avoiding the need for wire connections between the relay and fuse to form a node. Simultaneously, the sliding connection driven by the coil 203 allows the relay control function to directly act on the fuse assembly 300, thereby simplifying the hierarchical structure of the operating mechanism.

[0038] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, the base 100 is provided with a first receiving groove 101, and the coil 203 is disposed in the first receiving groove 101.

[0039] In this application, since existing relay assemblies 200 typically use adhesive bonding or screw fixing to install the coil 203, this not only requires additional machining of fixing holes, but also carries the risk of loosening due to glue aging. However, this application utilizes a groove structure, namely the first receiving groove 101, provided on the base 100. This groove can be formed by injection molding or machining to accommodate the coil 203 and restrict its displacement. This eliminates the need for auxiliary fixing components, reduces the installation steps for the coil 203, and avoids drive deviation caused by fixing failure.

[0040] The depth and shape of the first receiving groove 101 can match the shape of the coil 203, and the coil 203 can be positioned and fixed by physical constraints.

[0041] Meanwhile, coil 203 is a component in relay assembly 200 used to generate electromagnetic force. Specifically, it can be made of enameled wire wound into a cylindrical structure. Coil 203 can generate a magnetic field through current excitation to drive the conductive connector 400 to move. Wherein, after coil 203 is placed in the first receiving groove 101, the axial direction of coil 203 is perpendicular to the movement trajectory of conductive connector 400.

[0042] Specifically, the base 100 is provided with a first receiving groove 101 to provide a precise installation position for the coil 203, allowing the coil 203 to be directly embedded into the groove during assembly. The inner wall of the groove and the outer surface of the coil 203 form a contact constraint, preventing the coil 203 from shifting due to electromagnetic force or vibration when the relay is energized. Furthermore, the lead end of the coil 203 extends through an opening in the side wall of the groove to connect to an external circuit, allowing the coil 203 to be installed without additional fasteners, while ensuring that the relative position between the coil 203 and the current block 202 meets the operational requirements of the driving conductive connector 400.

[0043] In some embodiments, such as Figure 2 and Figure 3 As shown, the conductive connector 400 includes a conductive slider 401; wherein the conductive slider 401 is disposed between the current block 202 and the coil 203; when the coil 203 is in a conductive state, it drives the conductive slider 401 to move so as to electrically connect the current block 202 and the fuse assembly 300.

[0044] The conductive slider 401 is a metal conductor that achieves circuit switching through linear sliding. It can be made of copper alloy with a silver-plated surface to reduce contact resistance. The conductive slider 401 can improve current carrying capacity by replacing elastic contact with rigid contact.

[0045] In this application, the coil 203 can drive the conductive slider 401 to move when it is conductive. When the coil 203 is energized, it generates a magnetic force that pushes the conductive slider 401 to move along a straight trajectory. Specifically, this can be achieved by using a drive structure that combines an electromagnet and a permanent magnet, thereby avoiding the mechanical wear problem of traditional rotating contacts.

[0046] Specifically, relay assemblies 200 typically employ rotary contacts or spring-loaded structures, which suffer from problems such as unstable contact resistance and complex operating mechanisms. However, the coil 203 provided in this application, when conductive, can drive the conductive slider 401 to move, electrically connecting the overcurrent block 202 to the fuse assembly 300, thereby eliminating the mechanical losses of the rotary mechanism.

[0047] Specifically, when the coil 203 is energized, the magnetic force can directly act on the conductive slider 401, causing it to slide along a preset track towards the fuse assembly 300, specifically causing the conductive slider 401 to move upward. During the upward movement of the conductive slider 401, it can form rigid contact with the fixed contact of the current block 202 and complete the connection with the conductive surface of the fuse assembly 300.

[0048] In some embodiments, such as Figure 3As shown, the switch integration device also includes an encapsulation cover 500; wherein the encapsulation cover 500 is connected to the base 100 to encapsulate the relay assembly 200, the fuse assembly 300, and the conductive connector 400.

[0049] The encapsulation cover 500 is a shell structure covering the surface of the base 100. It can be made of injection-molded plastic shell, and its edges can be provided with a snap-fit ​​structure to form a detachable connection with the groove on the side wall of the base 100. The connection between the encapsulation cover 500 and the base 100 is the assembly relationship between them. It can be achieved by bolt fastening or ultrasonic welding, so that the two form a closed cavity structure. In this application, after the encapsulation cover 500 is assembled onto the base 100, the conductive slider 401 of the conductive connector 400 can move up and down within the cavity. When the coil 203 is energized and generates magnetic force, the conductive slider 401 is pushed to contact the overcurrent block 202 and the fuse assembly 300.

[0050] Specifically, this application integrates two functional components into a single package cover 500, eliminating the need for separate housing manufacturing materials and assembly processes. Simultaneously, this application integrates the relay and fuse, reducing the number of housing parts and assembly time, thereby lowering the manufacturing cost of the battery system circuit control module.

[0051] In some embodiments, such as Figure 2 and Figure 3 As shown, the conductive connector 400 also includes an elastic element 402; wherein one end of the elastic element 402 is fixedly connected to the encapsulation cover 500, and the other end of the elastic element 402 is fixedly connected to the conductive slider 401.

[0052] The elastic element 402 is a mechanical component capable of generating elastic restoring force through its own deformation. Specifically, it can be implemented using a helical spring, leaf spring, or elastic metal sheet. It provides a reset driving force for the conductive slider 401, ensuring that the conductive slider 401 automatically returns to its initial position after losing external driving force. The elastic element 402 can be a reaction spring.

[0053] The encapsulation cover 500 is a shell structure that covers the base 100 and forms a closed space with the base 100. Specifically, it can be made of injection-molded plastic or metal stamping. It can provide a fixed support point for the elastic element 402. The preload of the elastic element 402 can be adjusted through the assembly relationship between the encapsulation cover 500 and the base 100, saving the space of setting up a separate installation structure for the elastic element 402.

[0054] In this application, when the coil 203 is energized, the conductive slider 401 is driven to move upward, at which time the elastic element 402 is compressed or stretched and stores elastic potential energy; when the coil 203 is de-energized, the elastic element 402 releases the stored potential energy and drives the conductive slider 401 to move in the opposite direction to the initial position through the rebound force, so that the overcurrent block 202 is disconnected from the fuse assembly 300.

[0055] The encapsulation cover 500 serves as the fixed end of the elastic element 402. During the assembly process of the base 100, the preload of the elastic element 402 can be adjusted by adjusting the installation position of the encapsulation cover 500, thereby ensuring precise control of the movement stroke of the conductive slider 401.

[0056] Specifically, resetting a relay typically requires a separate reset spring and corresponding mounting bracket, leading to complex structure and increased assembly steps. This application, however, directly utilizes the encapsulation cover 500 as a fixing point for the elastic element 402. The installation and pre-tightening adjustment of the elastic element 402 are completed synchronously through the assembly relationship between the encapsulation cover 500 and the base 100, reducing the number of parts and simplifying the assembly process. Simultaneously, it also achieves the automatic reset function of the conductive slider 401 after power failure, avoiding unstable circuit connections caused by the conductive slider 401 jamming.

[0057] In addition, this application eliminates the need for additional installation structures by integrating the elastic element 402 with the encapsulation cover 500, thereby reducing material costs and assembly complexity and improving product reliability and economy.

[0058] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the relay assembly 200 also includes a first traction wire 204 and a second traction wire 205; wherein the first traction wire 204 and the second traction wire 205 pass through the base 100 to electrically connect the two ends of the coil 203 respectively.

[0059] The first traction wire 204 is a conductive line used to connect one end of the coil 203. After passing through the base 100, it can be connected to the positive terminal of an external power supply. The second traction wire 205 is a conductive line used to connect the other end of the coil 203. After passing through the base 100, it can be connected to an external control signal source. The base 100 serves as a support structure, and its through holes are formed through an injection molding process to ensure the accuracy of the traction wire fixing path.

[0060] In this application, the first traction wire 204 and the second traction wire 205 respectively pass through the preset holes on both sides of the base 100 and can be directly connected to the external circuit. When the coil 203 is energized, the current enters the coil 203 through the first traction wire 204, and returns to the external circuit through the second traction wire 205, forming a closed loop. This application integrates the electrical connection path of the coil 203 inside the device by using a design where the traction wire passes through the base 100, eliminating the need for additional external wiring. At the same time, the internal holes of the base 100 limit and fix the traction wires, preventing displacement of the lines under vibration and reducing manual wiring steps during assembly.

[0061] Specifically, this application integrates the electrical connection of coil 203 directly into the base 100 through a pre-embedded traction wire structure, eliminating the need for external terminal block installation and reducing contact resistance issues caused by poor soldering. The rigid connection of the traction wire through the base 100 replaces the traditional suspended wiring of flexible conductors, improving the line's resistance to mechanical shock.

[0062] In some embodiments, such as Figure 2 and Figure 3 As shown, the fuse assembly 300 includes a busbar 302; one end of the busbar 302 forms a second terminal 301, and the other end of the busbar 302 is slidably electrically connected to the conductive connector 400. The busbar 302 is provided with a narrow diameter 303.

[0063] The overcurrent bus 302 is a conductive metal bus structure, specifically made of copper or aluminum alloy, used to carry the main circuit current of the battery. One end of the overcurrent bus 302 can form a second terminal 301, which can be directly connected to an external circuit. The other end can form a movable electrical connection with the conductive connector 400 through a sliding contact, allowing the fuse assembly 300 and the relay assembly 200 to form a compact layout on the base 100. The narrow diameter 303 provided on the overcurrent bus 302 is a locally reduced cross-sectional area formed by machining, specifically by stamping or cutting processes. By reducing the cross-sectional area, a weak point for current carrying is created. When the circuit current exceeds the threshold, the narrow diameter 303 will preferentially melt due to the Joule effect, thereby cutting off the circuit.

[0064] In this application, the overcurrent bus 302 serves as the core component of the fuse function. It engages with the conductive connector 400 via a sliding electrical connection, allowing the fuse assembly 300 and the relay assembly 200 to form an integrated structure on the base 100. When the battery main circuit is operating normally, current flows into the overcurrent bus 302 through the second terminal 301 and is transmitted to the conductive connector 400 via the sliding contact. When a short circuit or overcurrent occurs in the circuit, the narrow diameter 303 experiences a rapid increase in current density, resulting in high-temperature melting and thus cutting off the circuit. The sliding electrical connection design allows the conductive connector 400 to displace when the relay operates, ensuring a dynamic electrical connection between the relay and the fuse while providing physical space for arc isolation after the narrow diameter 303 melts.

[0065] Among them, the geometric parameters of the narrow diameter 303, such as length, width and thickness, can achieve precise control of the fusing current threshold, ensuring that the fusing action is triggered only under abnormal operating conditions.

[0066] Specifically, this application integrates the overcurrent busbar 302 with the sliding electrical connection structure, directly embedding the fuse function into the base 100 where the relay assembly 200 is located, thus reducing the number of independent components. At the same time, the precise design of the narrow diameter 303 avoids the problems of false triggering or delayed fuse blowing caused by the structural redundancy of traditional fuses, and the sliding electrical connection structure can automatically isolate the fault point through displacement after fuse blowing, without the need for additional arc extinguishing devices.

[0067] In some embodiments, such as Figure 4 As shown, the fuse assembly 300 also includes a narrow-diameter disconnecting material; wherein, the base 100 is also provided with a second receiving groove 102, the narrow-diameter disconnecting material is disposed in the second receiving groove 102, and the narrow diameter 303 is disposed above the second receiving groove 102.

[0068] Specifically, relays and fuses are manufactured separately, mainly because relays and fuses need to be used together, and there is a certain correlation between their selection. At the same time, fuses are usually ordinary fuses, so relays and fuses are not usually integrated.

[0069] When a narrow-diameter 303 is incorporated into a conventional fuse, the 303 heats up significantly under high current, eventually melting and breaking the circuit. However, in low-temperature environments, the short-circuit current of a conventional fuse is insufficient, rendering it ineffective. Furthermore, the fuse selection must be matched with the relay; under prolonged high current conditions, the relay may blow, and the fuse must melt before the relay does. Additionally, conventional fuses are entirely mechanical, making it difficult to predict certain operating conditions, resulting in low controllability.

[0070] This application enables intelligent fuses by incorporating explosive 304 as the narrow-path disconnecting material in the switch integrated device. Specifically, the explosion can be controlled so that when the need to disconnect the entire circuit is detected, a signal can be provided to ignite the explosive 304 to open the narrow path 303. The signal can be controlled by a logic control unit, thereby enabling intelligent fuse operation.

[0071] Among them, explosive 304 can be understood as a chemical substance that can produce instantaneous energy release under controlled conditions. Specifically, it can be achieved by combining energetic materials with an electric triggering device, which is used to accelerate the melting process through explosion when the circuit is abnormal.

[0072] In this application, the second receiving groove 102 can be a spatial structure on the base 100 for fixing the explosive 304. Specifically, it can be formed by molding or machining to form a groove structure, so as to ensure that the explosive 304 and the narrow diameter 303 of the flow channel 302 form a vertical correspondence.

[0073] Specifically, when a short circuit or overload occurs in the battery main circuit, the explosive 304 is triggered and generates an explosive shock wave. Since the narrow diameter 303 is positioned directly above the second receiving groove 102, the explosive energy is directionally conducted to the area with the smallest cross-sectional area of ​​the flow channel 302. Under the combined effects of the explosive impact and current overload, the narrow diameter 303 of the flow channel 302 is rapidly melted, thereby physically cutting off the main circuit.

[0074] Meanwhile, the second receiving groove 102 on the base 100 serves as a positioning structure for the explosive 304, enabling the direction of the explosion energy release to spatially match the weak point of the flow channel 302, thus preventing energy dispersion.

[0075] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fuse assembly 300 also includes a third traction wire 305 and a fourth traction wire 306; wherein the third traction wire 305 and the fourth traction wire 306 pass through the base 100 and extend into the second receiving groove 102.

[0076] In this application, the third traction wire 305 is the first wire used to transmit ignition control signals, and can be implemented using copper core wire, with its outer layer wrapped with insulating material to prevent short circuits. The fourth traction wire 306 is the second wire used to form a closed ignition circuit, and can be made of the same material as the third traction wire 305, with the two forming an independent circuit inside the base 100.

[0077] The base 100 may be provided with a through hole for the traction wire to pass through, and the second receiving groove 102 is a groove structure for accommodating explosive 304.

[0078] Specifically, the third traction wire 305 and the fourth traction wire 306 can pass through the outside of the base 100, and after passing through the pre-set wire channel inside the base 100, their ends extend to the explosive 304 installation position in the second receiving slot 102. The third traction wire 305 and the fourth traction wire 306 are fixed inside the base 100 to prevent the wires from breaking due to external mechanical pulling. When the external control circuit sends an ignition signal, the current enters the ignition device in the second receiving slot 102 through the third traction wire 305, and then forms a circuit through the fourth traction wire 306, thereby triggering the explosive 304 to activate. The through path of the traction wires is integrated with the structure of the base 100, eliminating the need for additional external wiring brackets. This application achieves tight integration of the explosive 304 trigger circuit with the base 100 structure, reduces the number of independent wiring components in the battery system circuit protection device, reduces the complexity of manual operation during assembly, and ensures the reliability of ignition signal transmission by directional arrangement of the traction wire inside the base 100. At the same time, the overall layout of the fuse assembly 300 is simplified through structural integration.

[0079] In some embodiments, this application also provides a battery system including the switch integration device provided in the first aspect, wherein the switch integration device is connected to the main circuit of the battery system via a first terminal 201 and a second terminal 301.

[0080] The switch integration device provided in this application includes a base 100, a relay assembly 200, a fuse assembly 300, and a conductive connector 400. The relay assembly 200 and the fuse assembly 300 are both integrated on the base 100 and respectively form a first terminal 201 and a second terminal 301 for connecting to the main circuit of the battery system. The conductive connector 400 is used to connect to the relay assembly 200 and the fuse assembly 300 respectively, thereby realizing the integration of the relay and the fuse, reducing the need for independent installation of the relay and the fuse, avoiding the separate production of the relay and the fuse, reducing the number of parts in the battery system, and reducing material costs and installation costs.

[0081] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A switch integrated device, characterized in that, include: Base (100); A relay assembly (200) is disposed on the base (100) and has a first terminal (201) for external connection. A fuse assembly (300) is disposed on the base (100) and has a second terminal (301) for external connection. A conductive connector (400) is used to connect to the relay assembly (200) and the fuse assembly (300), respectively.

2. The switch integration device according to claim 1, wherein the conductive connector (400) is used to be slidably electrically connected to the relay assembly (200) and the fuse assembly (300), respectively.

3. The integrated switch device according to claim 2, characterized in that, The relay assembly (200) includes a current block (202) and at least one coil (203); The overcurrent block (202) is slidably electrically connected to the conductive connector (400) and forms the first terminal (201); when the coil (203) is in a conductive state, it drives the conductive connector (400) to move so as to electrically connect the overcurrent block (202) to the fuse assembly (300).

4. The integrated switch device according to claim 3, characterized in that, The base (100) is provided with a first receiving groove (101), and the coil (203) is disposed in the first receiving groove (101).

5. The integrated switch device according to claim 3, characterized in that, The conductive connector (400) includes a conductive slider (401); The conductive slider (401) is located between the current block (202) and the coil (203); when the coil (203) is conductive, it drives the conductive slider (401) to move so as to electrically connect the current block (202) and the fuse assembly (300).

6. The integrated switch device according to claim 5, characterized in that, The switch integration device also includes a package cover (500). The encapsulation cover (500) is connected to the base (100) to encapsulate the relay assembly (200), the fuse assembly (300), and the conductive connector (400).

7. The integrated switch device according to claim 6, characterized in that, The conductive connector (400) also includes an elastic element (402); One end of the elastic element (402) is fixedly connected to the encapsulation cover (500), and the other end of the elastic element (402) is fixedly connected to the conductive slider (401).

8. The integrated switch device according to claim 3, characterized in that, The relay assembly (200) also includes a first traction wire (204) and a second traction wire (205); The first traction wire (204) and the second traction wire (205) pass through the base (100) to electrically connect the two ends of the coil (203) respectively.

9. The switch integrated device according to any one of claims 1-8, characterized in that, The fuse assembly (300) includes a busbar (302); One end of the busbar (302) forms the second terminal (301), and the other end of the busbar (302) is slidably electrically connected to the conductive connector (400). The busbar (302) is provided with a narrow diameter (303).

10. The integrated switch device according to claim 9, characterized in that, The fuse assembly (300) also includes a narrow-diameter disconnecting material; The base (100) is further provided with a second receiving groove (102), the narrow-diameter disconnected material is disposed in the second receiving groove (102), and the narrow diameter (303) is disposed above the second receiving groove (102).

11. The integrated switch device according to claim 10, characterized in that, The fuse assembly (300) also includes a third traction wire (305) and a fourth traction wire (306). The third traction line (305) and the fourth traction line (306) pass through the base (100) and extend into the second receiving groove (102).

12. A battery system, characterized in that, The device includes a switch integration device according to any one of claims 1-11, wherein the switch integration device is connected to the main circuit of the battery system via the first terminal (201) and the second terminal (301).

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