Active and passive modular safety device

Abstract

The utility model discloses an active and passive modularized safety device, which belongs to the technical field of circuit protection devices and comprises a shell, and an igniter, a piston, an arc extinguish chamber and a conductive loop are arranged in the shell. The piston is provided with an active signal source and a passive signal source, the active signal source and the passive signal source are both used for giving out signals to trigger the ignition tool to conduct ignition action, impact force generated by the ignition tool can drive the piston to move to a blocking position in the direction close to the arc extinguish chamber, and the piston cuts off the conductive loop; and an active module for generating an active signal source is arranged outside the shell. According to the utility model, the coexistence of passive protection and active protection is realized, and the active protection mode does not need to depend on an automobile trip computer, so that the technical problem of safety missing of the passive protection is effectively solved; and the active module is externally arranged, and the two protection modes share one set of piston and arc extinguish chamber, so that the size of the device can be reduced, and the cost can be reduced.

Description

Technical Field

[0001] This utility model mainly relates to the field of circuit protection device technology, specifically a modular active and passive safety device. Background Technology

[0002] Circuit interruption devices are used to quickly disconnect circuits and achieve insulation in the event of a safety problem. Currently, circuit interruption devices can be divided into traditional fuses and excitation-triggered fuses; the latter are devices that interrupt electronic circuits after being triggered by an electronic signal, using a piston to break the conductor and thus disconnect the circuit. For example, a circuit quick-disconnection and anti-freezing device is disclosed in patent document CN219979438U, such as... Figure 1 As shown, an igniter, a piston, and a conductor are installed inside the housing. The conductor passes through the housing, and the igniter and piston are located on the same side of the conductor. An arc-extinguishing chamber is also provided inside the housing on the other side of the conductor. An arc-extinguishing body and a partition are installed inside the arc-extinguishing chamber. The partition divides the arc-extinguishing chamber into multiple arc-extinguishing cavities. Both the partition and the piston have clearance grooves corresponding to each other, so that they can be inserted into each other. The igniter can drive the piston to move towards the arc-extinguishing body to the blocking state, so that the piston can cut part of the conductor into multiple fragments corresponding to the arc-extinguishing cavities and bring them into the corresponding arc-extinguishing cavities. In the blocking state, the end of the piston near the arc-extinguishing body is inserted into the arc-extinguishing body.

[0003] However, circuit-breaking devices such as those that trigger fuses require the vehicle's computer to perform strategy calculations and then disconnect the battery pack circuit, which can be considered "passive" protection. Furthermore, during vehicle operation, there is a sleep state, and the vehicle's computer may be unable to determine if there is excessive current in the battery pack, potentially leading to an accident. Alternatively, even if the current during operation is not yet at a level requiring the vehicle's computer's detection, a current exceeding a certain value can lead to heat accumulation, causing the vehicle to overheat and potentially resulting in personal injury and property damage.

[0004] While existing technologies exist to address the aforementioned problem by connecting a passive safety device in series with a conventional fuse, this results in a larger footprint and higher costs. Utility Model Content

[0005] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. It mainly provides a modular active and passive safety device to solve the technical problem of safety omissions in the "passive" protection mentioned in the background, while also reducing space and cost.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] A modular active and passive safety device includes a housing, within which an igniter, a piston, an arc-extinguishing chamber, and a conductive circuit are disposed;

[0008] It is equipped with an active signal source and a passive signal source, both of which are used to provide signals to trigger the ignition action of the igniter. The impact force generated by the igniter can drive the piston to move towards the arc-extinguishing chamber to the blocking position, so that the piston cuts off the conductive circuit.

[0009] The housing is equipped with an active module for generating active signal sources.

[0010] As one implementation of the above scheme, there is one igniter, which is connected to a signal processor. The signal processor can receive active signal sources and passive signal sources, and output signals to trigger the ignition action of the igniter.

[0011] In another implementation of the above scheme, there are two ignition devices, which are used to receive an active signal source and a passive signal source, respectively.

[0012] Furthermore, the active module is connected to the ignition device via an active trigger lead. When the active module internally melts, the active trigger lead and the ignition device are connected, and an active signal source is output.

[0013] Furthermore, the active module is connected to a conductive circuit.

[0014] Specifically, the active module includes a housing, a mounting block, and a conductor. The mounting block is located inside the housing. The two ends of the conductor are respectively connected to two active trigger leads, and the part of the conductor that can be actively melted is located inside the housing.

[0015] Furthermore, the outer casing and the mounting block are both provided with through holes for bolts to pass through.

[0016] Furthermore, the portion of the conductor that can be actively melted is located on one side of the mounting block, forming an area on one side of the mounting block that can achieve melt-free protection.

[0017] Furthermore, the area within the active module that enables fuse protection is filled with an arc-extinguishing medium.

[0018] Furthermore, the arc-extinguishing medium is selected from any one of quartz sand, metal grid sheets, and metal wire.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) This utility model sets up an active signal source and a passive signal source. The passive signal source triggers the ignition device to cut off the conductive circuit by judging the vehicle's computer, thus achieving "passive" protection. The active signal source automatically melts the active fuse module under abnormal current and triggers the ignition device within microseconds to cut off the conductive circuit, thus achieving "active" protection. In this utility model, "passive" protection and "active" protection coexist, and the "active" protection mode does not rely on the vehicle's computer, effectively solving the technical problem of safety omissions in "passive" protection.

[0021] (2) The active module in this utility model is placed outside the housing. Compared with the solution where the active module is integrated into the housing of the safety device (which requires increasing the housing volume to accommodate the active module, and the cost and time will increase due to redevelopment), this utility model directly sets the active module outside, the overall size of the device is smaller, and there is no need to redevelop, so the cost is lower.

[0022] (3) In this utility model, the "active" protection and the "passive" protection share a set of piston and arc-extinguishing chamber. Compared with the passive safety device connected in series with a traditional fuse, this utility model can reduce the size of the device, thereby reducing the space occupied by the circuit cutting device and helping to reduce costs.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a safety device in the background art;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention in Embodiment 1;

[0026] Figure 3 This is a schematic diagram of the specific structure of the active module in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the present invention in Embodiment 2.

[0028] Reference numerals: 100, housing; 10, igniter; 11, active trigger lead; 12, passive trigger lead; 20, piston; 30, arc extinguishing chamber; 40, conductive circuit; 50, active module; 51, outer shell; 52, mounting block; 53, conductor; 54, through hole; 55, arc extinguishing medium. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Example 1: Please refer to the appendix for details. Figure 2 A modular active and passive safety device, based on the original structure in the patent document with authorization announcement number CN219979438U, adds an active module 50.

[0033] The original structure includes a housing 100, inside which is installed an igniter 10, a piston 20 and a conductive circuit 40. The conductive circuit 40 passes through the housing 100. The igniter 10 and the piston 20 are located on the same side of the conductive circuit 40. An arc-extinguishing chamber 30 is also provided inside the housing 100 on the other side of the conductive circuit 40. The igniter 10 is connected to the vehicle's on-board computer via a passive trigger lead 12.

[0034] The active module 50 is located outside the housing 100 and is connected to the conductive circuit 40. The active module 50 is connected to the ignition device 10 through the active trigger lead 11. There is only one ignition device 10, and the ignition device 10 is connected to a signal processor.

[0035] Please refer to the attached document carefully. Figure 2When applied, please refer to the red arrow in the diagram for the current flow. When an abnormal current flows through the active module 50, the active module 50 will first melt, causing the current to trigger the ignition device 10 via the active trigger lead 11 (i.e., generating an active signal source to trigger the ignition device 10). This gives the piston 20 the power to cut off the pre-broken point in the conductive circuit 40. Within milliseconds, the entire conductive circuit 40 is cut off, preventing equipment damage and personnel injury caused by abnormal current. This is considered "active" protection.

[0036] When the vehicle's computer detects an abnormal current, it energizes the ignition device 10 through the passive trigger lead 12 (i.e., generates a passive signal source to trigger the ignition device 10), thereby driving the piston 20 to cut off the conductive circuit 40, which is considered "passive" protection.

[0037] The aforementioned dual-power redundancy mechanism ensures the reliability of this device under complex operating conditions.

[0038] The aforementioned "passive" protection and "active" protection share a set of piston 20 and arc-extinguishing chamber 30. Compared with the passive protection device connected in series with a traditional fuse, the device size can be reduced, thereby reducing the space occupied by the circuit cutting device and helping to reduce costs.

[0039] Compared to solutions where the active module is integrated into the housing of the safety device (which requires increasing the housing volume to accommodate the active module, and the redevelopment will increase both cost and time), this solution directly sets the active module externally, resulting in a smaller overall device size and lower cost. At the same time, it can be easily integrated with existing safety devices, realizing "active functions" in existing "passive" products.

[0040] In this implementation, please refer to the appendix for details. Figure 3 The active module 50 includes a housing 51, a mounting block 52, and a conductor 53. The mounting block 52 is located inside the housing 51, and its two opposite sides are attached to the housing 51. The housing 51 and the mounting block 52 are provided with through holes 54 for bolts to pass through, so that the active module 50 can be stably attached to the terminal surface of the conductive circuit 40 by bolts. The conductor 53 is U-shaped, with its middle part located inside the housing 51 and on one side of the mounting block 52, and its two sides located outside the housing 51, with one side in contact with the terminal surface of the conductive circuit 40. The two ends of the conductor 53 are respectively connected to two active trigger leads 11.

[0041] When applying, such as Figure 3As shown by the red line, current flows through external wires or copper busbars, through conductor 53, and across the terminal face (or through the terminal face and conductor 53) to form a circuit. When an abnormal current is sufficient to cause the active module 50 to melt, the portion of conductor 53 located inside the housing 51 melts, preventing impact on external equipment.

[0042] In this embodiment, please refer to the appendix for details. Figure 3 The cavity inside the outer casing 51 corresponding to the conductor 53 (i.e., the area where the fuse protection is achieved) is filled with an arc-extinguishing medium 55, so that the insulation capacity at the initial fuse point meets the product performance and safety requirements.

[0043] In this embodiment, the arc-extinguishing medium 55 is quartz sand.

[0044] Example 2: The difference between this example and Example 1 is that:

[0045] In this embodiment, please refer to the appendix for details. Figure 4 There are two ignition devices 10, and both ignition devices 10 (without signal processors) are located directly above the same piston 20. One ignition device 10 is connected to the passive trigger lead 12 and to the vehicle's on-board computer; the other ignition device 10 is connected to the external active module 50 via the active trigger lead 11. By using the two ignition devices 10 as the power source for "passive" protection and "active" protection respectively, the safety level is higher.

[0046] In this embodiment, the arc-extinguishing medium 55 is a metal grid.

[0047] The rest is the same as in Example 1.

[0048] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A modular active-passive safety device, comprising a housing (100), wherein an igniter (10), a piston (20), an arc-extinguishing chamber (30), and a conductive circuit (40) are disposed within the housing (100), characterized in that: An active signal source and a passive signal source are provided, both of which are used to give signals to trigger the ignition device (10) to ignite. The impact force generated by the ignition device (10) can drive the piston (20) to move towards the arc-extinguishing chamber (30) to the blocking position, so that the piston (20) cuts off the conductive circuit (40). The housing (100) is provided with an active module (50) for generating an active signal source.

2. The active-passive modular safety device according to claim 1, characterized in that: There is one igniter (10). The igniter (10) is connected to the signal processor. The signal processor can receive active signal sources and passive signal sources and output signals to trigger the ignition action of the igniter (10).

3. The active-passive modular safety device according to claim 1, characterized in that: There are two ignition devices (10), which are used to receive active signal sources and passive signal sources respectively.

4. The active-passive modular safety device according to claim 1, characterized in that: The active module (50) is connected to the ignition device (10) via an active trigger lead (11). When the active module (50) is melted, the active trigger lead (11) and the ignition device (10) are connected, and an active signal source is output.

5. The active-passive modular safety device according to claim 4, characterized in that: The active module (50) is connected to the conductive circuit (40).

6. The active-passive modular safety device according to claim 5, characterized in that: The active module (50) includes a housing (51), a mounting block (52) and a conductor (53). The mounting block (52) is provided inside the housing (51). The two ends of the conductor (53) are respectively connected to two active trigger leads (11), and the part of the conductor (53) that can be actively melted is located inside the housing (51).

7. The active-passive modular safety device according to claim 6, characterized in that: The outer casing (51) and the mounting block (52) are provided with through holes (54) for bolts to pass through.

8. A modular active-passive safety device according to claim 6, characterized in that: The portion of the conductor (53) that can be actively melted is located on one side of the mounting block (52), and an area that can achieve melt protection is formed on one side of the mounting block (52).

9. A modular active-passive safety device according to claim 8, characterized in that: The active module (50) contains an arc-extinguishing medium (55) in the area where fuse protection can be achieved.

10. A modular active-passive safety device according to claim 9, characterized in that: The arc-extinguishing medium (55) is selected from any one of quartz sand, metal grid sheet, and metal wire.

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