CN-122000601-A - Automatic sealing cover for case and closing method and application thereof

Abstract

The automatic sealing cover for the case has the characteristics that the sealing cover is connected with the ventilation part and is provided with a plurality of openings corresponding to the ventilation holes, and the self-driving device is connected with the sealing cover and is used for driving the sealing cover to slide relative to the ventilation part, so that the openings are dislocated with the ventilation holes to close the ventilation part, and the self-driving device enables the rigid rod to move linearly in an electric driving or spring driving mode.

Inventors

• LI HAIBO

Assignees

• 上海金洛安全装备有限公司

Dates

Publication Date

20260508

Application Date

20260213

Claims (16)

1. 1. The automatic closing cap of case for a plurality of ventilation holes to the ventilation portion of case close, its characterized in that includes: a cover connected with the ventilation part and provided with a plurality of openings corresponding to the ventilation holes, and The self-driving device is characterized in that a rigid rod of the self-driving device is connected with the sealing cover and is used for driving the sealing cover to slide relative to the ventilation part so that a plurality of openings are dislocated with the ventilation holes to close the ventilation part, The self-driver makes the rigid rod move linearly in an electric driving or spring driving mode.
2. 2. The automatic enclosure cover of claim 1, wherein: The self-driving device drives the rigid rod to move in the electric driving mode, the self-driving device is an electric push rod, and the rigid rod is a push rod of the electric push rod or a connecting rod of the push rod.
3. 3. The automatic enclosure cover of claim 1, wherein: wherein the self-driver drives the rigid rod to move in a spring driving mode by receiving an electric signal, the self-driver is an electromagnetic starter, the rigid rod is a push rod, The self-driver includes: A housing portion; The starting piece is arranged in the shell part and changes magnetic force after being electrified; the moving piece is arranged in the shell part, and one end of the moving piece is connected with the ejector rod; And the spring is arranged in the shell part, one end of the spring is connected with the other end of the moving part, and the spring is used for driving the moving part and the ejector rod to move under the driving of the starting part.
4. 4. The automatic enclosure cover of claim 1, wherein: Wherein the self-driver drives the rigid rod to move in a spring driving mode by receiving an electric signal, the self-driver is an electromagnetic pin starter, the rigid rod is a push rod, The self-driver includes: A housing portion; The movable piece is arranged in the shell part, one end of the movable piece is connected with the ejector rod, and a clamping pin groove is formed in the movable piece; A starting piece which is arranged at the upper part of the shell part and is provided with a movable iron core corresponding to the position of the latch groove, wherein the movable iron core stretches into the latch groove and can move out of the latch groove after being electrified; and the spring is arranged in the shell part, one end of the spring is connected with the other end of the moving part, and the other end of the spring is connected with the inner wall of the shell part and is used for driving the moving part and the ejector rod to move after the movable iron core exits from the clamping pin groove.
5. 5. The automatic enclosure cover of claim 1, wherein: wherein the self-driver senses heat, and the heat causes deformation of the component, thereby triggering the spring and driving the rigid rod to move, The self-driver includes: a heat-sensitive cylinder body, one side of which is close to the sealing cover, is provided with a first through hole and a plurality of liquid discharge holes; the energy storage spring is arranged in the thermosensitive cylinder body, and one side of the energy storage spring is connected with the thermosensitive cylinder body; one side of the piston is connected with the other side of the energy storage spring, The rigid rod is a movable push rod, one end of the rigid rod is connected with the other side of the piston, and the other end of the rigid rod penetrates through the first through hole of the thermosensitive cylinder body and is connected with the sealing cover.
6. 6. The automatic enclosure cover of claim 5, wherein: The self-driving device further comprises a first heat-sensitive component arranged between the piston and the heat-sensitive cylinder body, a through hole is formed in the self-driving device, and the movable push rod penetrates through the through hole.
7. 7. The automatic enclosure cover of claim 5, wherein: Wherein the upper side and the lower side of the thermosensitive cylinder body are also provided with second through holes, the interior of the piston is provided with a bolt hole, The self-driver further comprises a second heat-sensitive component, and the second heat-sensitive component penetrates through the second through hole and the bolt hole.
8. 8. The automatic enclosure cover of claim 1, wherein: wherein the self-driver senses heat, and the heat causes deformation of the component, thereby triggering the spring and driving the rigid rod to move, The self-driver includes: The thermal fuse piece is formed by connecting two metal sheets through a thermosensitive material; the cylinder body is connected with the thermal fuse piece; the energy storage spring is arranged in the cylinder body, one side of the energy storage spring is connected with the cylinder body, The rigid rod is a push rod, one side of the rigid rod is connected with the other side of the energy storage spring, and the other side of the rigid rod is connected with the hot-melt piece.
9. 9. The automatic enclosure cover of claim 6, wherein: wherein the self-driver heats the first thermosensitive component by receiving an electric signal, the heat induced by the first thermosensitive component causes the component to deform, thereby triggering a spring and driving the rigid rod to move, The self-driver further comprises a first resistance wire which is arranged inside the first thermosensitive part and electrically connected with an external circuit.
10. 10. The automatic enclosure cover of claim 7, wherein: wherein the self-driver heats the second thermosensitive component by receiving an electric signal, the heat induced by the second thermosensitive component causes the component to deform, thereby triggering a spring and driving the rigid rod to move, The self-driver further comprises a second resistance wire which is arranged inside the second thermosensitive part and electrically connected with an external circuit.
11. 11. The automatic enclosure cover of claim 8, wherein: wherein the self-driver heats the thermal fuse through receiving the electric signal, the heat induced by the thermal fuse causes the deformation of the component, thereby triggering the spring and driving the rigid rod to move, The self-driving device further comprises an electric heating element which is arranged at the bottom of the thermal fuse link and is electrically connected with an external circuit.
12. 12. Use of a can automatic cover in a battery module case, characterized by having a can automatic cover according to any one of claims 1 to 11 for closing a plurality of ventilation holes of a ventilation part of a battery module case.
13. 13. Use of a housing automatic cover in an electric control cabinet, characterized by having a housing automatic cover according to any of claims 1-11 for closing a plurality of ventilation holes of a ventilation part of the electric control cabinet.
14. 14. A method for closing an automatic closure of a container, using the automatic closure of a container according to any one of claims 1 to 11, closing a plurality of ventilation holes of the ventilation part of the case, characterized by comprising the following steps: the self-driver receives the electric signal and drives the rigid rod to linearly move in an electric driving mode to drive the sealing cover to slide relative to the ventilation part so that the plurality of openings are dislocated with the ventilation holes to close the ventilation part, or The self-driver receives the electric signal to trigger the starting piece, and then the spring drives the rigid rod to linearly move to drive the sealing cover to slide relative to the ventilation part, so that the openings are dislocated with the ventilation holes to close the ventilation part, or The self-driver receives an electric signal and heats the electric signal to cause deformation of the thermosensitive component, so that the spring is triggered and drives the rigid rod to linearly move to drive the sealing cover to slide relative to the ventilation part, and the openings are dislocated with the ventilation holes to close the ventilation part.
15. 15. A method for closing an automatic closure of a container, using the automatic closure of a container according to any one of claims 1 to 11, closing a plurality of ventilation holes of the ventilation part of the case, characterized by comprising the following steps: the self-driver senses heat, so that the heat-sensitive component deforms, the spring is triggered, the rigid rod is driven to linearly move, the sealing cover is driven to slide relative to the ventilation part, and the openings are dislocated with the ventilation holes to close the ventilation part.
16. 16. The automatic closure closing method of a container according to claim 14, wherein: the electric signal is a closing instruction sent by an upper system, a sensor is arranged in the case, the sensor is used for monitoring a parameter value of the parameter value in the case, the monitoring result is transmitted to the upper system in real time, and when the monitoring result is higher than a preset threshold value, the upper system sends the closing instruction, and the parameter value comprises temperature, smoke, gas, infrared or ultraviolet.

Description

Automatic sealing cover for case and closing method and application thereof Technical Field The invention relates to the technical field of automatic closing of ventilation of a limited space, in particular to an automatic sealing cover of a box shell, a closing method of the automatic sealing cover and application of the automatic sealing cover of the box shell in a battery module box and an electric control cabinet. Background Large-scale storage of electrical energy has been a problem in industry, and battery energy storage in low-power applications has been widely used. For one hundred years, lead-acid batteries have been used in large numbers in industry and commerce, particularly as Uninterruptible Power Supplies (UPS) and starting power supplies. In the last two decades, with the rapid development of lithium battery technology, lead-acid batteries have been largely replaced with lithium ion batteries. However, the inherent scientific effect of lithium dendrites in lithium ion batteries results in significant safety risks for long-term use. When lithium ion batteries are applied on a large scale, unavoidable thermal runaway, as well as thermal spread probability, have become a technical problem to be solved. High energy density lithium battery cells, also known as cells, are connected in series and/or parallel to form a battery pack. The battery pack is placed in the battery box, and forms a modularized battery module together with a BMS circuit board (battery management system component), a current guide body, an isolation layer, a locking belt, a cable harness, a sensor and the like. The battery box, also called a battery module box, is composed of a formed plate rib piece and is divided into a sealing structure or a non-sealing structure, wherein the sealing structure is completely sealed and has good sealing performance, and the non-sealing structure cannot be sealed and does not have sealing performance. In the field of power grid side energy storage, a plurality of battery module boxes are connected in series and parallel to form a battery cluster, or a battery pack of an electric automobile contains a plurality of battery modules. Most of battery module boxes and battery packs with the application are of sealing structures, and the protection level reaches IP67. However, more applications are battery module cases of non-airtight structure, in which a plurality of battery modules are connected in series and parallel, and are mounted on a rack of a cabinet, on a battery cluster, in a battery box or in a battery cabinet, to form a battery system. In the application fields of industrial and commercial side energy storage, UPS lithium battery systems, household energy storage and the like, the battery system does not adopt a liquid cooling heat exchange and module box sealing structure based on the consideration of use environment and economy. And air cooling heat exchange, namely natural ventilation or forced ventilation of a fan is adopted, so that the heat dissipation and heat exchange purposes are realized, and obviously, the battery module box cannot be sealed and closed. When the battery module is charged and discharged, heat is generated due to joule heat. At this time, external cold air enters the module through the ventilation part of each module box body to realize the convection heat exchange of each battery core through forced ventilation or natural convection, or air flows through the ventilation part of the bin or the box shell of the battery system to exchange heat with the atmospheric environment to cool the heating battery in the battery module box. In order to perform ventilation and heat exchange, the battery module box bodies are of ventilation opening non-sealing design. And, because the battery module design is compact, a large amount of electrical components are arranged to battery module box inside, and the space is narrow and compact very much. The vent of the battery module box body cannot be closed, and is very difficult to be closed in a rotating way. The current industry is looking for fire extinguishing systems for battery thermal runaway, in bins or casings where a large number of batteries are located. However, the international thermal safety scientific research shows that the fire extinguishing technology cannot essentially solve the problem of thermal runaway of the lithium battery, namely, a large amount of gas is generated, a large amount of heat is generated, the loss of fire extinguishing agent is large, the accurate action and the probability of multiple ignition are difficult. A large number of fire extinguishing experiments prove that the fire extinguishing agent is released into the battery cabinet and the module, so that only the initial small fire can be extinguished, and the subsequent battery cascade thermal runaway and a large amount of exhaust cannot be prevented. If the ignition is performed again, the inflammable and explosive gas generated by the t