Fire pan generator and momentary trigger device

Abstract

A kind of fire generator and instantaneous trigger device.The existing fire control mode single and unstable problem is solved.It includes firing pin and fire generator, the automobile fire generator includes first fire shell;Second fire shell, the second fire shell and first fire shell are mutually matched to form charge cavity;The launch powder and the firing powder for igniting launch powder after first fire shell is hit are arranged in the charge cavity;First electrode, insert into charge cavity through first fire shell;Second electrode, insert into charge cavity through first fire shell;Bridge wire, the first electrode is connected with second electrode by bridge wire;The second fire shell has first position when installing and second position when firing powder and launch powder are excited and separate from first fire shell.The utility model also has the advantages of simple structure, convenient assembly, reliable action, long service life, high safety etc..

Description

Technical Field

[0001] This utility model relates to a rapid circuit breaking technology for electric vehicles, specifically to a fire generator and an instantaneous triggering device. Background Technology

[0002] New energy storage cabinets and electric vehicles both contain large-capacity batteries that store a significant amount of electrical energy. Taking electric vehicles as an example, electric vehicles use power batteries as their power source. These power batteries are generally large and store a large amount of electrical energy. Due to technological limitations of power batteries, they are prone to explosion and combustion in situations such as thermal runaway, collisions, and abnormal discharges. Current solutions mainly focus on cutting off the power battery's output current in these situations. There are two main solutions: one is to use a fuse and contactor connected in series to detect information such as the power battery's heat, abnormal discharge, and vehicle collisions (e.g., detecting airbag deployment signals). Once a preset condition is met, the contactor is disconnected via an electrical signal, or the fuse is blown under high current conditions to break the circuit. However, due to the instantaneous acceleration characteristics of electric vehicles and the high risk of collisions and other accidents, the protective function provided by traditional thermal fuses in electric vehicles is limited by slow speed or inability to achieve the desired effect. The reason is that when an electric vehicle experiences a major accident such as a collision, the fault current in the electric vehicle may not be generated or may be very small. Traditional fuses cannot melt and protect the circuit, and they become unusable once the entire vehicle loses power, thus posing a potential safety hazard. Another approach is to install an explosive device at the busbar of the power battery. If a preset condition is met, the explosive will ignite, using its force to forcibly cut the busbar and break the circuit. Currently, various new types of fuses have emerged, among which the most widely used is the pyrotechnic circuit breaker (ignition generator). The function of the pyrotechnic circuit breaker is mainly to protect against the blind spots of traditional fuses. In use, the pyrotechnic circuit breaker is connected in series with a traditional fuse in the circuit. When a short circuit occurs and the traditional fuse fails to operate, the vehicle's control system (usually the vehicle's BMS battery management system) will send a signal to the pyrotechnic circuit breaker, causing it to disconnect and complete the protection. When normal current flows, the current flows through the current-carrying copper busbar, and its withstand capability is greatly improved compared to traditional fuses. When a short circuit occurs, the pyrotechnic device receives an ignition signal and is ignited. The high temperature and pressure generated when the pyrotechnic device is ignited drive the cutter to move and interrupt the current-carrying copper busbar, dividing the current-carrying copper busbar into two parts and disconnecting the circuit.

[0003] Currently, pyrotechnic circuit breakers are generally used as initiation triggering devices for power source devices, serving as the execution unit of the main system or product. In new energy vehicles, they typically include vehicle control units (VCU), engine control units (ECU), motor control units (MCU), and battery management systems (BMS). Pyrotechnic circuit breakers simply execute according to the instructions of the control system. Most pyrotechnic circuit breakers are used in series with traditional fuses for joint protection. When the short-circuit current is small, the vehicle detects the short-circuit current and sends a tripping signal to the pyrotechnic circuit breaker. When the short-circuit current is large, the traditional fuse automatically trips. However, existing pyrotechnic circuit breakers have complex structures and unreliable control. They can basically only be controlled by control signals, such as electronic control, which is unstable and cannot be triggered mechanically. Utility Model Content

[0004] To address the problem of the single and unstable control methods of existing pyrotechnic devices in the background art, this utility model provides a pyrotechnic generator and an instantaneous triggering device.

[0005] The technical solution of this utility model is: a fire-generating device, including a first fire-generating housing, and further comprising:

[0006] The second firearm housing, together with the first firearm housing, forms a propellant cavity; the propellant cavity contains propellant and a firing charge for igniting the propellant.

[0007] The first electrode passes through the first firearm casing and is inserted into the propellant chamber;

[0008] The second electrode passes through the first firearm casing and is inserted into the powder chamber;

[0009] The first electrode is connected to the second electrode via a bridge wire; the second firearm housing has a first position when installed and a second position when the propellant or detonator is activated and separated from the first firearm housing.

[0010] As a further improvement of this utility model, the first firearm housing is provided with a first powder container and a second powder container, and the first powder container and the second powder container are connected.

[0011] As a further improvement of this utility model, the second medicine container is cylindrical.

[0012] As a further improvement of this utility model, the first medicine container is arranged in a cylindrical or frustum shape, and the bridge wire is disposed in the first medicine container.

[0013] As a further improvement of this utility model, the first firearm housing is provided with a firing pin hole for easy insertion of the firing pin, and the firing pin hole is located on the outer surface of the first firearm housing at the other end opposite to the propellant chamber.

[0014] As a further improvement of this utility model, the propellant is disposed in the first propellant tank and the propellant is disposed in the second propellant tank.

[0015] As a further improvement of this utility model, the outer surface of the second firearm shell at the other end relative to the first firearm shell is provided as a plane, a cone, or a frustum.

[0016] As a further improvement of this utility model, the second firearm shell is arranged in a "U" shape, the first firearm shell is provided with a powder-containing wall and a flange, and the second firearm shell covers the powder-containing wall and extends to the flange.

[0017] An instantaneous triggering device includes a firing pin and the aforementioned firearm generator, wherein the firing pin strikes a first firearm housing and triggers a propellant and a firing charge, causing a second firearm housing to separate from the first firearm housing.

[0018] As a further improvement of this utility model, it also includes a signal wire, which is connected to the first electrode and the second electrode respectively and triggers the propellant and the firing powder through a bridge wire to separate the second firearm housing from the first firearm housing; the diameter of the firing pin near the first firearm housing is smaller than the diameter of the end away from the first firearm housing, and the firing pin is driven by a mechanical structure to move relative to the first firearm housing.

[0019] The beneficial effects of this invention are that it incorporates a first electrode and a second electrode connected by a bridge wire, improving the stability of the fire starter. The fire starter can be triggered by a striking pin, achieving integrated mechanical and electrical triggering, thus enhancing product safety. This invention also boasts advantages such as simple structure, convenient assembly, reliable operation, long service life, and high safety. Attached Figure Description

[0020] Appendix Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0021] Appendix Figure 2 For the appendix Figure 1 A cross-sectional structural diagram.

[0022] Appendix Figure 3 This is a cross-sectional schematic diagram of the structure of the automotive fire generator according to Embodiment 1 of this utility model.

[0023] Appendix Figure 4 For the appendix Figure 3 A schematic diagram of the structure of the first firearm casing.

[0024] Appendix Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0025] Appendix Figure 6 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0026] Appendix Figure 7 This is a structural schematic diagram of Embodiment 4 of the present utility model.

[0027] In the figure, 1. First firearm housing; 11. First propellant reservoir; 12. Second propellant reservoir; 13. Firing pin hole; 14. Propellant wall; 15. Flange; 2. Second firearm housing; 3. Propellant chamber; 31. Propellant; 32. Firing propellant; 4. First electrode; 5. Second electrode; 6. Bridge wire; 7. Firing pin; 8. Signal wire. Detailed Implementation

[0028] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0029] Depend on Figure 1 Combination Figure 2-7 As shown, a fire-generating device includes a first fire-generating housing 1, and further includes:

[0030] The second firearm housing 2, together with the first firearm housing 1, forms a propellant cavity 3; the propellant cavity 3 contains a propellant 31 and a firing propellant 32 for igniting the propellant 31; specifically, the first firearm housing can be struck to ignite the propellant with the firing propellant, or the current can be passed through the bridge wire to ignite the propellant with the firing propellant.

[0031] The first electrode 4 passes through the first firearm casing 1 and is inserted into the powder chamber;

[0032] The second electrode 5 passes through the first firearm casing 1 and is inserted into the powder chamber 3;

[0033] The first electrode 4 is connected to the second electrode 5 via the bridge wire 6. The second firearm housing 2 has a first position during installation and a second position where it is separated from the first firearm housing 1 when the igniting charge 32 and propellant 31 are ignited. The beneficial effects of this invention are that the provision of a first electrode and a second electrode, connected by a bridge wire, improves the stability of the firearm generator. The firearm generator can be triggered by a firing pin or a signal wire, achieving integrated mechanical and electrical triggering, resulting in higher product safety. This invention also has advantages such as simple structure, convenient assembly, reliable operation, long service life, and high safety. The igniting charge is a mixture of agents that ignites deflagration due to mechanical impact or adiabatic compression of air bubbles. Its main components are initiating explosive, combustible agent, and oxidizer, and it may also contain additives such as desensitizers, sensitizers, and binders. After ignition, a hot spot is generated, the initiating explosive decomposes, and subsequently, the combustible agent and oxidizer undergo a combustion reaction, forming a flame used to ignite the propellant, ignition charge, delay charge, or detonator. Propellant typically refers to gunpowder contained within a casing for launching. In this invention, the firing pin strikes the first firing pin casing or penetrates the firing pin hole, igniting the propellant. The propellant rapidly diffuses and ignites the propellant. In a relatively enclosed environment, the propellant releases a large amount of energy, propelling the second firing pin casing. The second firing pin casing then drives a cutter to cut off the conductive busbar. The firing pin generator can work in conjunction with the cutter or utilize its own structure to break the circuit; that is, the firing pin generator can disconnect the circuit at the conductive busbar. This invention can be used in products such as electric vehicles and new energy storage cabinets.

[0034] The first firearm housing 1 is provided with a first propellant reservoir 11 and a second propellant reservoir 12, which are connected. Specifically, the second propellant reservoir 12 is cylindrical. More specifically, the first propellant reservoir 11 is cylindrical or frustum-shaped, and the bridge wire 6 is disposed within the first propellant reservoir 11. The arrangement of the first and second propellant reservoirs facilitates the placement of the firing powder and / or the launching element. The first propellant reservoir results in a smaller and more concentrated product volume, facilitating ignition by mechanical or electrical means, thereby ensuring reliable operation of the second firearm housing.

[0035] The first firearm housing 1 is provided with a firing pin hole 13 for easy insertion of the firing pin 7. The firing pin hole 13 is located on the outer surface of the first firearm housing 1 at the other end opposite to the propellant chamber 3. More specifically, the firing pin hole is recessed, which facilitates the impact of the firing pin and the activation of the propellant, thus facilitating the ignition of the propellant.

[0036] The firing powder 32 is disposed in the first powder container 11, and the propellant 31 is disposed in the second powder container 12. Specifically, the outer surface of the second firearm housing 2 at the other end relative to the first firearm housing 1 is a plane, a cone, or a frustum. This structure facilitates product assembly, is structurally simple, and the second firearm housing can drive the cutting blade. Embodiment 2 of this utility model discloses another firing pin structure, and embodiments 3 and 4 of this utility model disclose another firearm generator structure.

[0037] The second firearm housing 2 is U-shaped. The first firearm housing 1 has a propellant-containing wall 14 and a flange 15. The second firearm housing 2 covers the propellant-containing wall 14 and extends towards the flange 15. When the propellant and / or detonating charge release energy, the first and second firearm housings are less likely to break, thus preventing energy loss and ensuring that the cutting tool has sufficient firing energy, thereby improving the cutting tool's piercing capability.

[0038] An instantaneous triggering device includes a firing pin 7, a signal wire 8, and the aforementioned flare generator. The firing pin 7 strikes a first flare housing 1 and ignites the propellant 32 and the propellant 31, causing a second flare housing 2 to separate from the first flare housing 1. The signal wire 8 is connected to a first electrode 4 and a second electrode 5, respectively, and through a bridge wire 6, ignites the propellant 32 and the propellant 31, causing the second flare housing 2 to separate from the first flare housing 1. Specifically, the diameter of the firing pin 7 near the first flare housing 1 is smaller than the diameter at the end away from the first flare housing 1. The firing pin 7 is driven by a mechanical structure to move relative to the first flare housing 1. In this invention, the propellant can be ignited by mechanical impact or electronic means, thereby driving the second flare housing to move. This invention is typically used in conjunction with a fuse (circuit breaker) in automobiles. A cutter can be used to cut off the conductive busbar; alternatively, a structure for cutting off the conductive busbar can be provided on the second flare housing. The product has a simple structure, is convenient and reliable to control, and can achieve multiple control methods, resulting in higher safety.

[0039] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modification that utilizes the inventive concept will be included within the scope of protection of this utility model patent.

Claims

1. A fire-generating device, comprising a first fire-generating housing (1), characterized in that: Also includes: The second firearm housing (2) and the first firearm housing (1) cooperate to form a propellant cavity (3); the propellant cavity (3) contains a propellant (31) and a detonating charge (32) for igniting the propellant (31). The first electrode (4) passes through the first firearm casing (1) and is inserted into the powder chamber; The second electrode (5) passes through the first firearm casing (1) and is inserted into the powder chamber (3); The first electrode (4) is connected to the second electrode (5) via the bridge wire (6); the second firearm housing (2) has a first position when installed and a second position when the propellant (32) and the propellant (31) are separated from the first firearm housing (1) when they are activated.

2. The fire generator according to claim 1, characterized in that... The first firearm housing (1) is provided with a first powder container (11) and a second powder container (12), and the first powder container (11) and the second powder container (12) are connected.

3. The fire generator according to claim 2, characterized in that... The second medicine container (12) is cylindrical.

4. The fire generator according to claim 2, characterized in that... The first medicine container (11) is cylindrical or frustum-shaped, and the bridge wire (6) is located inside the first medicine container (11).

5. The fire generator according to claim 1, characterized in that... The first firearm housing (1) is provided with a firing pin hole (13) for easy insertion of the firing pin (7). The firing pin hole (13) is located on the outer surface of the first firearm housing (1) at the other end opposite to the propellant chamber (3).

6. The fire generator according to claim 1, characterized in that... The propellant (32) is disposed in the first propellant tank (11), and the propellant (31) is disposed in the second propellant tank (12).

7. The fire generator according to claim 1, characterized in that... The outer surface of the second firearm housing (2) at the other end relative to the first firearm housing (1) is set as a plane, a cone or a frustum.

8. The fire generator according to claim 1, characterized in that... The second firearm housing (2) is U-shaped. The first firearm housing (1) is provided with a powder-containing wall (14) and a flange (15). The second firearm housing (2) covers the powder-containing wall (14) and extends to the flange (15).

9. An instantaneous triggering device, characterized in that: Includes a firing pin (7) and a firearm generator according to any one of claims 1-8, wherein the firing pin (7) strikes the first firearm housing (1) and triggers the propellant (32) and the propellant (31) to separate the second firearm housing (2) from the first firearm housing (1).

10. The instantaneous triggering device according to claim 9, characterized in that; It also includes a signal wire (8), which is connected to the first electrode (4) and the second electrode (5) respectively, and through the bridge wire (6) to excite the propellant (32) and the propellant (31) to separate the second firearm housing (2) from the first firearm housing (1); the diameter of the firing pin (7) near the first firearm housing (1) is smaller than the diameter of the end away from the first firearm housing (1), and the firing pin (7) is driven by a mechanical structure to move relative to the first firearm housing (1).

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