Ignition agent starting type puncture valve
Through the design of the inducing agent-activated puncture valve, gunpowder and ignition components are used to cause high-pressure puncture valve when the battery is thermally out of control, and fire fluid is released to extinguish the fire, solving the inflexible and inaccurate response of the puncture valve in the prior art. The problem is that effective control of battery thermal runaway is achieved, reducing maintenance costs and ensuring the safety of the battery pack.
Patent Information
- Application Number
- CN202411466981.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2024-12-13
AI Technical Summary
The existing puncture valves may be triggered accidentally when the pressure has not reached a dangerous level, or they may not be opened in time, resulting in fire accidents caused by thermal runaway from the battery and are difficult to effectively prevent and control, and their applicability to different application scenarios and battery types is limited.
A gunpowder start-up puncture valve is designed, including a high-pressure generation area, a puncture needle activity area, a liquid storage area and a liquid outlet area. The gunpowder storage chamber and a ignition assembly are used to ignite the gunpowder after the trigger system is discharged, and a high-pressure push puncture needle is generated. The barrier membrane is punctured, fire fluid is released to extinguish the fire, and the accuracy and reliability of the gunpowder explosion are ensured through a combination of resistive wire and gunpowder.
A more flexible and accurate pressure response mechanism is achieved, ensuring that the fire is extinguished in a timely and effective manner when the battery is thermally out of control, reducing maintenance costs, and each battery pack unit corresponds to a puncture valve to ensure that the fire is extinguished accurately without affecting other battery packs. Works normally.
Smart Images
Figure CN119123138A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of valve bodies, and in particular relates to an ignition agent-activated puncture valve. Background Art
[0002] With the large-scale deployment of new energy storage projects around the world, the safe operation of battery modules, as the core components of energy storage systems, has become the key to the development of the industry. Battery safety is not only related to energy storage efficiency and life, but also directly related to personal safety and environmental protection. In this context, the fire safety issue of battery modules is particularly prominent, especially how to effectively prevent and control fire accidents caused by thermal runaway of batteries. As an important battery safety protection device, the puncture valve is receiving increasing attention.
[0003] The puncture valve, also known as the explosion-proof valve, is mainly installed on the battery cell or battery pack. It is designed to respond quickly when the internal pressure of the battery rises abnormally, and to release the internal high-pressure gas by automatically opening, thereby preventing the battery shell from rupturing or exploding.
[0004] Existing puncture valves usually have a fixed opening pressure threshold, which means they may accidentally trigger before the pressure reaches a truly dangerous level, or fail to open in time when they are really needed. For different application scenarios and battery types, the applicability of a single threshold is limited, and a more flexible and precise adjustment mechanism is needed. Summary of the invention
[0005] The present invention provides an ignition agent activated puncture valve to solve the above-mentioned problems.
[0006] To solve the above problems, the present invention provides the following technical solutions: an ignition agent activated puncture valve, comprising a valve body, wherein the valve body is provided with a high pressure generating area, a puncture needle active area, a liquid storage area and a liquid outlet area;
[0007] A gunpowder storage chamber and an ignition assembly are arranged in the high voltage generating area; one end of the ignition assembly is electrically connected to the output end of the trigger system, and the other end of the ignition assembly extends into the gunpowder storage chamber;
[0008] The needle activity area is provided with a needle rod and a needle; the top structure of the needle rod is in contact with the pressure discharge port of the gunpowder storage chamber; the lower part of the needle rod extends into the liquid storage area, and the needle is installed at the bottom of the needle rod;
[0009] The liquid storage area is provided with a through-hole, a fire-fighting liquid inlet and a barrier film; a liquid storage area is formed between the through-hole and the barrier film; the through-hole is provided between the liquid storage area and the needle active area, and the barrier film is provided at the other side of the through-hole;
[0010] The liquid outlet area is provided with a liquid outlet and a second pipe; one end of the second pipe is connected to a side surface of the barrier film, and the other end of the second pipe is communicated with the liquid outlet; the liquid outlet is communicated with the atomizing nozzle.
[0011] A preferred technical solution: gunpowder is filled in the gunpowder storage chamber; the gunpowder storage chamber is provided with a filling port, a pressure relief port and an ignition port; one end of the ignition assembly is in contact with the gunpowder through the ignition port; a cover plate is provided on the filling port; the pressure relief port is fitted with the top of the needle rod, and the firing voltage of the ignition powder is ≤24V.
[0012] A preferred technical solution: the ignition assembly includes a lead and a resistance wire; one end of the resistance wire is electrically connected to the trigger system, the other end of the resistance wire is connected to one end of the lead, and the other end of the lead extends into the interior of the gunpowder.
[0013] A preferred technical solution: the ignition assembly includes a resistance wire, an ignition powder is coated on the outer surface of the resistance wire, one end of the resistance wire is electrically connected to the trigger system, and the other end of the resistance wire extends into the interior of the powder.
[0014] Preferred technical solution: the shape of the pressure relief port matches the shape of the top of the needle rod; a seal is provided between the bottom of the needle rod and the needle, and the specification and shape of the seal match the specification and shape of the liquid storage area.
[0015] A preferred technical solution is to provide a reinforcement ring on the inner wall of the through-hole.
[0016] A preferred technical solution: the trigger system includes a power battery and an electric control board, the electric control board is electrically connected to the power battery, and the power battery is electrically connected to the resistance wire.
[0017] The preferred technical solution is that the fire-fighting liquid in the liquid storage area is perfluorohexanone required for use in a PACK-level fire-fighting system.
[0018] Preferred technical solution: a valve seat is further provided between the liquid outlet and the atomizing nozzle, the inlet of the valve seat is connected to the liquid outlet through the second pipe, and the outflow port of the valve seat is connected to the atomizing nozzle; the atomizing nozzle is connected to the battery unit; a plurality of outflow ports of the valve seat are arranged, and each of the outflow ports is respectively connected to the corresponding atomizing nozzle through a corresponding number of the second pipes.
[0019] The preferred technical solution is that the number of the valve seats is integrated into a plurality of units, and the number of the corresponding atomizing nozzles and battery units matches the number of the valve seats.
[0020] Compared with the prior art, the advantages of the ignition agent activated puncture valve of the present invention are as follows:
[0021] 1. Compact mechanism, simple structure and reliable action.
[0022] 2. The ignition powder head adopts military standards and has a validity period of more than 10 years, which minimizes maintenance costs.
[0023] 3. Maintenance and replacement are simple and convenient.
[0024] 4. High integration. The valve seat can be made into a single one or multiple ones integrated together, and connected to the atomizing nozzle of each battery unit by a pipe from the outlet.
[0025] 5. Each battery pack unit corresponds to a puncture valve, which can achieve accurate extinguishing without affecting the normal operation of other battery packs. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 It is a schematic diagram of the present invention 1.
[0028] As shown in the above figure: high pressure generating area 1, needle active area 2, liquid storage area 3, liquid outlet area 4, valve body 5; valve seat 6; lead wire 11; gunpowder storage chamber 12; gunpowder 13; needle rod 21; fire-fighting liquid inlet 31; barrier membrane 32; liquid outlet 41. DETAILED DESCRIPTION
[0029] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "fixed", "integrally formed", "left", "right" and similar expressions used in this specification are for illustrative purposes only. In the drawings, units with similar structures are marked with the same reference numerals.
[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0032] Example 1: Figure 1 As shown, the ignition agent activated puncture valve comprises a valve body 5, wherein the valve body 5 is provided with a high pressure generating area 1, a puncture needle active area 2, a liquid storage area 3 and a liquid outlet area 41;
[0033] The high voltage generating area 1 is provided with a gunpowder storage chamber 12 and an ignition assembly; one end of the ignition assembly is electrically connected to the output end of the trigger system, and the other end of the ignition assembly extends to the inside of the gunpowder storage chamber 12;
[0034] The needle activity area 2 is provided with a needle rod 21 and a needle; the top structure of the needle rod 21 is in contact with the pressure discharge port of the gunpowder storage chamber 12; the lower part of the needle rod 21 extends into the liquid storage area 3, and the needle is installed at the bottom of the needle rod 21;
[0035] The liquid storage area 3 is provided with a through hole, a fire-fighting liquid inlet 31 and a barrier film 32; the liquid storage area 3 is formed between the through hole and the barrier film 32; the through hole is provided between the liquid storage area 3 and the needle activity area 2, and the barrier film 32 is provided at the other side of the through hole;
[0036] The liquid outlet 41 area 4 is provided with a liquid outlet 41 and a second pipe; one end of the second pipe is connected to a side surface of the barrier film 32, and the other end of the second pipe is communicated with the liquid outlet 41; the liquid outlet 41 is communicated with the atomizing nozzle.
[0037] It should be noted that: when the sensor built into any unit battery pack of the energy storage cabinet captures the critical temperature rise or smoke concentration, the trigger system discharges and heats the ignition component, so that the ignition component ignites the gunpowder 13 in the gunpowder storage chamber 12 and detonates. The high pressure generated by the explosion of the gunpowder 13 pushes the needle rod 21 to move left, and the needle pierces the group diaphragm, so that the fire-fighting liquid in the liquid storage area 3 is sprayed out from the liquid outlet 41 in the liquid outlet area 4, and the fire is extinguished in the bud, thereby ensuring the safety of the energy storage cabinet.
[0038] Embodiment 2: The gunpowder storage chamber 12 is filled with gunpowder 13; the gunpowder storage chamber 12 is provided with a filling port, a pressure relief port and an ignition port; one end of the ignition assembly is in contact with the gunpowder 13 through the ignition port; a cover plate is provided on the filling port; the pressure relief port is fitted with the top of the needle rod 21, and the firing voltage of the ignition powder is ≤24V.
[0039] It should be noted that a filling port is provided in the gunpowder storage chamber 12 so as to be able to refill the gunpowder in the gunpowder storage chamber 12;
[0040] In order to enhance the pressure generated by the explosion of the gunpowder 13, it is necessary to set a sealing plate at the filling port, and fix the sealing plate to the gunpowder storage chamber 12 by fasteners such as screws, bolts or screws; further, one side of the sealing plate adjacent to the inside of the gunpowder storage chamber 12 is covered with an explosion-proof layer formed by an explosion-proof material.
[0041] The gunpowder storage chamber 12 is provided with a pressure relief port so that the pressure generated by the gunpowder explosion can be discharged through the pressure relief port, thereby exerting a thrust on the needle rod 21, thereby pushing the needle rod 21 to move in the needle active area 2, so that the needle on the needle rod 21 pierces the barrier film 32.
[0042] Embodiment 3: The ignition assembly has two modes;
[0043] First: the ignition assembly includes a lead 11 and a resistance wire; one end of the resistance wire is electrically connected to the trigger system, the other end of the resistance wire is connected to one end of the lead 11, and the other end of the lead 11 extends into the inside of the gunpowder.
[0044] Second: the ignition assembly includes a resistance wire, an ignition powder is coated on the outer surface of the resistance wire, one end of the resistance wire is electrically connected to the trigger system, and the other end of the resistance wire extends into the inside of the powder.
[0045] It should be noted that the resistance wire is a heating resistance wire; by heating the resistance wire, the gunpowder explodes;
[0046] By coating the ignition powder on the resistance wire, firstly, the time of gunpowder explosion can be shortened, and the gunpowder can be detonated in the shortest time, so as to puncture the structure and the barrier membrane 32 in the first time, so that the fire-fighting liquid can flow from the liquid storage area 3 to the liquid outlet 41 area 4 of the flow channel, and take proactive intervention measures for the impending fire; secondly, the safety performance of the gunpowder is improved to reduce the risk of unexpected non-explosion, and the accuracy of the expected explosion is ensured by combining the heating of the resistance wire to trigger the explosion of the gunpowder and the ignition powder on the resistance wire to cause the explosion of the ignition powder.
[0047] Embodiment 4: The pricking needle activity area 2 is provided with a pricking needle cavity, a pricking needle rod 21 and a pricking needle; the cavity of the pricking needle cavity matches the specifications of the pricking needle rod 21; the top structure of the pricking needle rod 21 is consistent with the pressure relief port structure of the gunpowder storage cavity 12; the middle part of the pricking needle rod 21 is in the pricking needle activity area 2; the lower part of the pricking needle rod 21 extends into the liquid storage area 3, and the pricking needle is installed at the bottom of the pricking needle rod 21.
[0048] It should be noted that: when the gunpowder explodes, the high pressure generated pushes the top of the needle rod 21 from the pressure relief port, causing the needle rod 21 to move in the needle activity area 2 toward the liquid storage area 3. When the needle pierces the barrier membrane 32, the fire-fighting liquid flows from the liquid storage area 3 to the liquid outlet area 41, implementing a pre-emptive prevention strategy to deal with the impending fire hazard.
[0049] Furthermore, in order to prevent the fire-fighting liquid from flowing back from the liquid storage area 3 to the needle activity area 2, a seal is arranged between the bottom of the needle rod 21 and the needle, and the specification of the seal matches the specification of the liquid storage area 3; the shape of the seal should be the same as the internal structure of the fire-fighting storage area, and the size of the seal should also be the same as the internal size of the fire-fighting storage area; for example: when the internal structure of the fire-fighting storage area is square, the seal is also square and consistent with the internal size of the fire-fighting storage area; in this way, it is ensured that when the needle does not pierce the barrier membrane 32, the stored liquid in the fire-fighting storage area will not flow into the needle activity area 2 through the gap between the needle rod 21 and the needle cavity, increasing the risk of entering the gunpowder cavity; similarly, when the needle pierces the barrier membrane 32, the excessive thrust of the needle rod 21 will prevent the fire-fighting liquid from flowing out of the liquid outlet 41 area 4 in the liquid storage area 3 in an instant, thereby causing the fire-fighting liquid to flow back into the needle activity area 2.
[0050] Embodiment 5: Liquid storage area 3: fire-fighting liquid inlet 31, barrier membrane 32, through-port; the through-port is arranged between the liquid storage area 3 and the needle active area 2, and a reinforcement ring is arranged on the inner wall of the through-port; a barrier membrane 32 is arranged on the other side of the through-port; a liquid storage area 3 is formed between the through-port and the barrier membrane 32, and the fire-fighting liquid inlet 31 is arranged on the valve seat 6, and the fire-fighting liquid inlet 31 extends into the liquid storage area 3 through a first pipe; one end of the first pipe is connected to the fire-fighting liquid inlet 31, and the other end of the first pipe extends into the liquid storage area 3 and within the active area of the seal.
[0051] It should be noted that: the range of the active area of the seal is the distance that the needle rod 21 pushes the needle to move in the liquid storage area 3; when the other end of the first pipe of the fire-fighting liquid inlet 31 is not within the range of the active area of the seal, accordingly: in order to prevent the fire-fighting liquid from flowing back into the needle active area 2, the seal on the needle rod 21 is made consistent with the internal structure and size of the fire-fighting storage area, so that the area between the seal and the barrier film 32 is the area where the fire-fighting liquid is stored. Therefore, the other end of the first pipe of the fire-fighting liquid inlet 31 can only be within the range of the active area of the needle.
[0052] Furthermore, by providing a reinforcing ring on the inner wall of the through-hole, it is prevented that when the gunpowder explodes, the pressure generated is too large, thereby preventing the shape of the through-hole from being destroyed, so that the liquid storage area 3 is connected with the needle active area 2, thereby increasing the probability of backflow.
[0053] Embodiment 6: The trigger system includes a power battery and an electronic control board, the electronic control board is electrically connected to the power battery, and the power battery is electrically connected to the resistance wire; the fire-fighting liquid in the liquid storage area 3 is perfluorohexanone required for use in a PACK-level fire-fighting system; a valve seat 6 is also provided between the liquid outlet 41 and the atomizing nozzle, the inlet of the valve seat 6 is connected to the liquid outlet 41 through the second pipe, and the outflow port of the valve seat 6 is connected to the atomizing nozzle; the atomizing nozzle is connected to the battery unit; the valve seat 6 has a plurality of outflow ports, each of which is connected to a corresponding atomizing nozzle through a corresponding number of the second pipes; the number of the valve seats 6 is a plurality of integrated ones, and the number of the corresponding atomizing nozzles and battery units matches the number of the valve seats 6.
[0054] It should be noted that the above-mentioned technical features are further combined with each other to form various embodiments not listed above, which are all deemed to be within the scope of the present invention; and, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should fall within the scope of protection of the claims attached to the present invention.
Claims
1. An ignition agent activated puncture valve, comprising a valve body, characterized in that; The valve body is provided with a high pressure generating area, a needle activity area, a liquid storage area and a liquid outlet area; A gunpowder storage chamber and an ignition assembly are arranged in the high voltage generating area; one end of the ignition assembly is electrically connected to the output end of the trigger system, and the other end of the ignition assembly extends into the gunpowder storage chamber; The needle activity area is provided with a needle rod and a needle; the top structure of the needle rod is in contact with the pressure discharge port of the gunpowder storage chamber; the lower part of the needle rod extends into the liquid storage area, and the needle is installed at the bottom of the needle rod; The liquid storage area is provided with a through-hole, a fire-fighting liquid inlet and a barrier film; a liquid storage area is formed between the through-hole and the barrier film; the through-hole is provided between the liquid storage area and the needle active area, and the barrier film is provided at the other side of the through-hole; The liquid outlet area is provided with a liquid outlet and a second pipe; one end of the second pipe is connected to a side surface of the barrier film, and the other end of the second pipe is communicated with the liquid outlet; the liquid outlet is communicated with the atomizing nozzle.
2. The ignition agent activated puncture valve according to claim 1, characterized in that; The gunpowder storage chamber is filled with gunpowder; the gunpowder storage chamber is provided with a filling port, a pressure relief port and an ignition port; one end of the ignition assembly is in contact with the gunpowder through the ignition port; a cover plate is provided on the filling port; the pressure relief port is fitted with the top of the needle rod, and the firing voltage of the ignition powder is ≤24V.
3. The ignition agent activated puncture valve according to claim 2, characterized in that; The ignition assembly includes a lead and a resistance wire; one end of the resistance wire is electrically connected to the trigger system, the other end of the resistance wire is connected to one end of the lead wire, and the other end of the lead wire extends into the interior of the gunpowder.
4. The ignition agent activated puncture valve according to claim 2, characterized in that: The ignition assembly comprises a resistance wire, an outer surface of which is coated with ignition powder, one end of the resistance wire is electrically connected to the trigger system, and the other end of the resistance wire extends into the interior of the powder.
5. The ignition agent activated puncture valve according to claim 2, characterized in that: The shape of the pressure discharge port matches the shape of the top of the needle rod; a seal is arranged between the bottom of the needle rod and the needle, and the specification and shape of the seal match the specification and shape of the liquid storage area.
6. The pyrotechnic agent activated puncture valve according to claim 1, characterized in that; A reinforcement ring is arranged on the inner wall of the through-hole.
7. The pyrotechnic agent activated puncture valve according to claim 1, characterized in that; The trigger system comprises a power battery and an electric control board, wherein the electric control board is electrically connected to the power battery, and the power battery is electrically connected to a resistance wire.
8. The pyrotechnic agent activated puncture valve according to claim 1, characterized in that; The fire-fighting liquid in the liquid storage area is perfluorohexanone required for use in a PACK-level fire-fighting system.
9. The pyrotechnic agent activated puncture valve according to claim 1, characterized in that; A valve seat is also provided between the liquid outlet and the atomizing nozzle, the inlet of the valve seat is connected to the liquid outlet through the second pipe, and the outflow port of the valve seat is connected to the atomizing nozzle; the atomizing nozzle is connected to the battery unit; the valve seat has a plurality of outflow ports, and each of the outflow ports is respectively connected to a corresponding atomizing nozzle through a corresponding number of the second pipes.
10. The ignition agent activated puncture valve according to claim 9, characterized in that: The number of the valve seats is multiple, and the number of the corresponding atomizing nozzles and battery units matches the number of the valve seats.