Fire and explosion prevention battery pack for rescue integration and new energy vehicle

Abstract

This invention discloses an integrated fireproof and explosion-proof battery pack for rescue and a new energy vehicle, relating to the field of battery safety and explosion protection. The integrated fireproof and explosion-proof battery pack includes an external component and an explosion-proof component. The external component includes a battery housing and a dismantling guide area disposed on the battery housing. The explosion-proof component includes a fire extinguishing pipe located within the battery housing, and a cell pressure relief valve and a cell fire extinguishing system disposed within each cell. One end of the fire extinguishing pipe extends outside the battery housing, and the other end connects to the cell pressure relief valve and the cell fire extinguishing system to guide high-temperature gas ejected from the cell pressure relief valve to the cell fire extinguishing system. The fire extinguishing pipe has a fire extinguishing agent outlet. This invention enables precise external dismantling and precise external fire extinguishing, while ensuring real-time triggering of fire extinguishing within the cell.

Description

Technical Field

[0001] This invention relates to the field of battery safety and explosion protection, specifically to an integrated fireproof and explosion-proof battery pack for rescue and new energy vehicles. Background Technology

[0002] Existing electric vehicles, especially pure electric vehicles, are highly susceptible to uncontrollable chain reactions of exothermic reactions, or "thermal runaway," after a serious collision, particularly when lithium batteries are subjected to mechanical compression, puncture, or internal short circuits. This process not only ejects flames reaching thousands of degrees Celsius but also rapidly generates large amounts of flammable and toxic gases, which can easily lead to deflagration or explosion in enclosed or semi-enclosed spaces.

[0003] To protect the battery pack and high-voltage components, electric vehicle body structures are often reinforced. Rescuers are unsure where to cut to avoid high-voltage wiring harnesses, nor are they familiar with the battery pack's fixing structure and pressure relief valve location. Blindly cutting could lead to directly severing high-voltage wires and causing electric shock, or damaging the battery pack structure and accelerating thermal runaway. At the same time, lithium batteries are prone to irreversible thermal runaway chain reactions under mechanical compression or puncture, spewing high-temperature flames and large amounts of flammable and toxic gases, posing an explosion risk. Traditional external fire extinguishing methods (such as water and foam) can only cool the battery casing and cannot penetrate to the internal cells, making it extremely easy for the fire to reignite after extinguishing. Existing internal battery fire extinguishing systems also have limitations in severe collisions: the thermal runaway sensing system inside the cells may be damaged beforehand, making it impossible to detect thermal runaway in time, resulting in the inability to suppress the fire source immediately and causing large-scale chain thermal runaway. Summary of the Invention

[0004] This application provides an integrated fireproof and explosion-proof battery pack for rescue and new energy vehicles, which can solve the technical problems in the prior art where the electric vehicle body structure is often reinforced, making it easy to cut the high-voltage wiring harness when cutting to extinguish a fire, and the flame retardant cannot reach the ignition point of the battery cell. At the same time, the fire extinguishing system inside the battery cell is prone to failure under certain collision and compression scenarios, and cannot suppress thermal runaway.

[0005] In a first aspect, embodiments of this application provide an integrated fireproof and explosion-proof battery pack for rescue operations, comprising: An external component, the external component including a battery housing and a breaching guide area disposed on the battery housing; The breaching guidance zone, as a pre-designed weak point in the mechanical structure, provides a safe and controllable physical path for emergency external breaching. This design transforms uncontrollable violent breaching into predictable and neat structural cracking, fundamentally avoiding internal secondary short circuits, structural damage, or injury to rescue personnel caused by rescue operations, thus creating the primary safety prerequisite for external rescue. An explosion-proof component includes a fire extinguishing conduit located inside the battery casing, and a cell pressure relief valve and a cell fire extinguishing system installed in each cell. One end of the fire extinguishing conduit extends out of the battery casing, and the other end is connected to the cell pressure relief valve and the cell fire extinguishing system to guide the high-temperature gas ejected from the cell pressure relief valve to the cell fire extinguishing system. The fire extinguishing conduit has a fire extinguishing agent outlet on its body.

[0006] The dual fire extinguishing trigger path ensures the absolute reliability of the fire extinguishing action. The mechanical linkage trigger is triggered by the high-temperature gas diverted by the pressure relief valve, which is guided by the fire extinguishing pipeline to directly reach the target battery cell fire extinguishing system. It triggers the activation in a purely physical way, without relying on electronic signals. Even in the extreme case of battery management system failure, the action can still be executed. The external intervention trigger is formed by the fire extinguishing pipeline extending out of the end of the battery casing to form a standard quick interface, which allows rescuers to connect fire extinguishing equipment from the outside and then quickly inject the fire extinguishing agent into the battery cell. In conjunction with the first aspect, in one embodiment, the battery housing includes a lower housing and an upper cover, wherein the lower housing has multiple mounting spaces for placing battery cells.

[0007] In one embodiment, the demolition guide area and the installation space are staggered.

[0008] In one embodiment, the demolition guide area includes a guide groove formed on the side wall of the lower housing and / or the upper cover.

[0009] In one embodiment, the fire extinguishing conduit includes a main conduit, one end of which extends out of the battery casing, and the other end branches to form multiple sub-conduits.

[0010] In one embodiment, the plurality of branch pipes are arranged in an alternating manner and interconnected, and at least one branch pipe is provided at each installation space.

[0011] Multiple branch pipelines ensure coverage of all critical areas. They are staggered in space and interconnected through specific connection nodes, forming an internally connected network structure. This not only enhances the structural redundancy of the system, but also allows the extinguishing agent to diffuse through other paths even if a single point is damaged. It is also more conducive to the self-balancing and uniform distribution of the extinguishing agent pressure within the pipeline network. Ultimately, it ensures that at least one branch pipeline passes through each independent battery cell installation space or module unit, thus guaranteeing the targeted and uniform spraying of the extinguishing agent.

[0012] In one embodiment, the end of the main pipe extending outside the battery housing is provided with a fire extinguishing agent inlet.

[0013] The extinguishing agent inlet interface is designed in accordance with general industry standards, aiming to achieve tool-free and rapid docking with external fire-fighting equipment or professional fire extinguishing devices. It provides a convenient and reliable physical channel for the rapid and large-scale injection of extinguishing agents, greatly shortening the emergency response time.

[0014] In one embodiment, each battery cell is equipped with a battery cell pressure relief valve and a battery cell fire extinguishing system, and a single branch pipe connects the battery cell pressure relief valve on the current battery cell and the corresponding battery cell fire extinguishing system.

[0015] When thermal runaway occurs, the cell pressure relief valve completes the pressure relief action. At this time, the high-temperature flue gas containing combustible gas generated enters the fire extinguishing pipeline connected to it. The fire extinguishing pipeline directs the high-temperature flue gas to the cell fire extinguishing system. The high-temperature flue gas can be directly converted into a physical signal that triggers the fire extinguishing action, realizing the self-extinguishing of the fire inside the cell first.

[0016] In one embodiment, the extinguishing agent outlets are provided in multiple locations, and the multiple extinguishing agent outlets are equidistantly arranged on each of the branch pipes.

[0017] Secondly, this application provides a new energy vehicle, which is equipped with the aforementioned integrated fireproof and explosion-proof battery pack for rescue purposes.

[0018] The beneficial effects of the technical solutions provided in this application include: 1. The breaching guide area on the outer periphery of the battery casing serves as a pre-designed weak point in mechanical structure, providing a safe and controllable physical path for emergency external breaching. This design transforms uncontrollable violent breaching into predictable and neat structural cracking, fundamentally avoiding internal secondary short circuits and structural damage caused by rescue operations. 2. The standard quick-connect interface on the battery casing allows rescuers to connect fire extinguishing equipment from the outside and quickly inject a large amount of extinguishing agent into the battery casing through the fire extinguishing pipe, so that rapid and accurate asphyxiation fire extinguishing can be achieved inside without disassembling the battery casing. 3. By utilizing the fire extinguishing pipeline to connect the pressure relief valve and the fire extinguishing system within the battery cell, the electronic control triggering mechanism of the traditional battery cell fire extinguishing system is changed to a physical triggering mechanism. This prevents the internal battery cells from easily reigniting after extinguishing the fire in extreme collision situations. Existing battery internal fire extinguishing systems have limitations in severe collisions: the thermal runaway sensing system inside the battery cell may be damaged beforehand, failing to detect thermal runaway in time, resulting in the inability to suppress the fire source immediately and causing a large-scale chain reaction of thermal runaway. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of an integrated fireproof and explosion-proof battery pack for rescue purposes, provided as an embodiment of this application.

[0021] In the diagram: 1. Battery casing; 2. Dismantling guide area; 3. Fire extinguishing pipeline; 301. Main pipeline; 302. Branch pipeline; 4. Battery cell pressure relief valve; 5. Battery cell fire extinguishing system; 6. Fire extinguishing agent outlet; 7. Fire extinguishing agent inlet. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0023] Firstly, the embodiments of this application provide an integrated fireproof and explosion-proof battery pack for rescue, which can solve the technical problems existing in the prior art. The electric vehicle body structure is often reinforced, making it easy to cut the high-voltage wiring harness when cutting to extinguish a fire, and the flame retardant cannot reach the ignition point of the battery cell. At the same time, the fire extinguishing system inside the battery cell is prone to failure under some collision and compression scenarios, and cannot suppress thermal runaway.

[0024] Figure 1 This is a cross-sectional view of an integrated fireproof and explosion-proof battery pack for rescue purposes, provided as an embodiment of this application. Figure 1 As shown, the integrated fireproof and explosion-proof battery pack includes external components and explosion-proof components. The external components are the battery housing 1, which constitutes the cell mounting space and the external protective layer. The battery housing 1 is made of high-strength composite flame-retardant material through an integral molding process. In an optional embodiment, the internal structure of the battery housing 1 is topologically optimized to provide redundant space and corresponding reinforcing ribs for buffering thermal expansion and external impacts while ensuring overall mechanical strength.

[0025] A breaching guide area 2 is arranged around the outer periphery of the battery casing 1. This area consists of pre-designed continuous or intermittent mechanically weak structures along the surface of the casing. When the battery pack requires emergency intervention due to extreme conditions, the breaching guide area 2 can provide firefighters or maintenance personnel with a clear physical breaching path, enabling the casing to be quickly and neatly cracked along the predetermined location. This prevents secondary damage to the internal structure, short circuit deterioration of the cells, or injury to operators caused by blind breaching.

[0026] The explosion-proof component is integrated and installed inside the battery casing 1, and is the core active protection system to deal with the risk of battery thermal runaway. Its main part is a specially designed built-in fire extinguishing pipe network 3. The fire extinguishing pipe 3 is made of a special alloy material, which has excellent high temperature resistance and corrosion resistance, ensuring that it can maintain structural integrity and functionality and not melt or blockage even when extreme thermal runaway occurs inside the battery.

[0027] To meet actual rescue and emergency response needs, one end of the fire extinguishing pipe 3 extends out of the battery housing 1, and its exposed port is made into a standardized fire extinguishing agent inlet interface 7. The fire extinguishing agent inlet interface 7 is designed in accordance with general industry standards, aiming to achieve tool-free rapid docking with external fire-fighting equipment or professional fire extinguishing devices, providing a convenient and reliable physical channel for rapid and large-scale injection of fire extinguishing agents, and greatly shortening the emergency response time.

[0028] Inside the battery pack, there are usually multiple sets of battery cell modules. In order to systematically cover all potential thermal runaway risk points and effectively suppress every fire hazard, the fire extinguishing pipeline network 3 is planned according to the layout of the battery cells inside the battery pack and arranged in a specific way to ensure that it can pass evenly and tightly surround each set of battery cell modules, thereby forming a three-dimensional protection network with no dead angles and full coverage in space.

[0029] A series of extinguishing agent outlets 6 are provided on the pipe body of the fire extinguishing pipeline 3, according to the orientation of the battery cells. When the battery pack experiences thermal runaway and intervention is deemed necessary, an external extinguishing agent supply device can be connected to the pipeline via the aforementioned standard quick-connect interface. The high-pressure extinguishing agent is then rapidly injected into the network of fire extinguishing pipelines 3 and quickly fills the entire pipeline system along a preset path. Finally, the extinguishing agent is precisely and evenly sprayed into the internal space of the battery pack through the extinguishing agent outlets 6 distributed on the pipe wall, especially directly acting on the battery cell modules and their gaps and other critical areas. This design enables the extinguishing agent to directly cover potential or existing ignition points, rapidly cool and suffocate the fire, thereby effectively suppressing the thermal runaway chain reaction and preventing the disaster from escalating.

[0030] Furthermore, the explosion-proof component integrates a cell pressure relief valve 4 and a cell fire extinguishing system 5, which are connected in series via the aforementioned fire extinguishing pipe 3. Specifically, the other end of the fire extinguishing pipe 3 is sequentially connected to the cell pressure relief valve 4 and the cell fire extinguishing system 5, thus constructing a physical path from the inside of the cell to the dedicated fire extinguishing unit. When the pressure inside one or more cells rises sharply due to thermal runaway, the preset cell pressure relief valve 4 will be activated first to complete the directional pressure relief action. The high-temperature flue gas containing combustible gas generated at this time will be discharged from the outlet of the pressure relief valve and then enter the fire extinguishing pipe 3 connected to it. The fire extinguishing pipe 3 plays a guiding and transmission role here, directionally transporting the high-temperature flue gas flow generated by thermal runaway to the downstream cell fire extinguishing system 5. This physical connection design ensures that when a fault occurs inside the cell, the pressure and high-temperature flue gas generated can be directly converted into a physical signal to trigger the fire extinguishing action. The high-temperature flue gas flow reaches the cell fire extinguishing system 5 through the fire extinguishing pipe 3 and triggers it, realizing internal self-extinguishing.

[0031] The battery cell fire suppression system 5 is typically a stand-alone, built-in, small pressurized fire extinguishing tank pre-filled with a dedicated extinguishing medium. In conventional designs, the system's triggering relies on the battery management system, which issues activation commands by analyzing electrical signals from temperature, smoke, or pressure sensors. However, this design employs a more direct and reliable mechanical linkage mechanism for physical triggering. In this design, the activation of the battery cell fire suppression system 5 no longer depends entirely on signal judgment and logic control from electronic sensors and the battery management system. Instead, it is directly triggered by the high-temperature airflow generated by the physical pressure relief action of the upstream battery cell pressure relief valve 4. This mechanical linkage design significantly improves the certainty of the fire suppression system's triggering in extremely harsh electrical environments, ensuring precise and rapid initial internal asphyxiation extinguishing.

[0032] Furthermore, the battery casing 1 includes a lower housing and an upper cover. The lower housing forms multiple installation spaces for placing battery cells. The lower housing is formed by crisscrossing reinforcing ribs or modular partitions, creating multiple independent or semi-independent regular installation spaces. Each installation space is matched to the size of a standard battery cell or battery cell module to place and fix the battery cell, ensuring its structural stability under dynamic conditions such as vehicle driving. This design not only improves the overall rigidity and impact resistance of the battery pack, but also effectively limits the direct heat radiation and flame propagation path to adjacent battery cells in the event of thermal runaway of a single battery cell through physical separation, providing an isolation barrier for fireproof and explosion-proof design.

[0033] Furthermore, the path of the demolition guide area 2 is specially planned and intersects with the installation space inside the lower casing used to place the battery cells and the critical electrical wiring area. Specifically, the scribbles or weak structural lines of the demolition guide area 2 avoid the concentrated laying paths of the high-voltage busbars, sampling harnesses, and BMS control lines inside the battery pack. It also bypasses the central load-bearing area of ​​the battery cell installation space, ensuring that in the event of forced demolition in an emergency, the tool can quickly crack the casing along the preset weak path, while protecting the integrity of the internal high-voltage electrical connections and the battery cell body to the greatest extent. This effectively avoids serious secondary risks such as secondary short circuits and arcing caused by damage to the high-voltage harness during demolition, and significantly improves the safety of emergency response.

[0034] Furthermore, the breaching guidance area 2 includes guide grooves formed on the side wall of the lower casing and / or the upper cover. These guide grooves are pre-designed continuous grooves or thinned areas, and their depth and direction are calculated to significantly reduce the external force required for local breaching while ensuring the normal operating strength of the battery casing 1. The liquid cooling plate, high-voltage wiring harness, and BMS control lines of the battery pack are usually arranged in specific pipes at the bottom or side of the cells. Setting the breaching guidance area 2 on the side wall of the lower casing and the upper cover can guide the flow completely around these specific pipes. At the same time, in the event of battery thermal runaway, high-temperature ejected materials and flammable gases mainly accumulate in the upper space of the battery pack. Setting the breaching guidance area 2 on the upper cover can most quickly open the main hazard accumulation area, achieve rapid pressure relief, heat dissipation, and smoke emission, and prevent gas accumulation from causing deflagration.

[0035] Furthermore, the fire extinguishing pipeline system 3 adopts a hierarchical design to optimize the distribution and coverage efficiency of the extinguishing agent. The system is mainly composed of the main pipeline 301 and the branch pipeline 302, forming a complete and efficient built-in fire delivery system.

[0036] The main pipe 301, serving as the core backbone and external connection channel of the entire system, extends securely from the battery housing 1 at one end. Its end, after standardized design and processing, forms a uniformly sized extinguishing agent inlet 7. This interface is specifically designed to match common external fire-fighting devices or professional fire-fighting equipment, allowing rescuers to achieve a quick and reliable connection in emergencies without special tools. This ensures that external extinguishing agents can be rapidly injected into the target battery pack. The other end of the main pipe 301 extends deep into the battery housing 1. Since the battery housing 1 typically contains multiple battery cell modules arranged in an array, to eliminate blind spots and achieve precise coverage of every potential thermal runaway risk point, [further details are needed]. This project adopts a branch network scheme. Specifically, the end of the main pipeline 301 branches into multiple independent branch pipelines 302 evenly through a branch structure to ensure coverage of all critical areas. The multiple branch pipelines 302 are interspersed in space and interconnected through specific connection nodes, forming an internally connected network structure. This not only enhances the structural redundancy of the system, but also allows the extinguishing agent to diffuse through other paths even if a single point is damaged. It is also more conducive to the self-balancing and uniform distribution of the extinguishing agent pressure within the pipeline network. Ultimately, it ensures that at least one branch pipeline 302 passes near each independent battery cell installation space or module unit, thereby providing a guarantee for the targeted and uniform spraying of the extinguishing agent.

[0037] In one possible implementation, each sub-pipe 302 is equipped with a rigid support frame, which ensures the sealing reliability of the extinguishing agent delivery path and provides stable support and protection for each sub-pipe 302 when the battery pack deforms, preventing deformation of the pipes under external impact. The rigid support frame includes snap-on mounting points and locking grooves pre-installed inside the battery pack, enabling quick assembly and mechanical interlocking without additional fasteners. Along the path of the corresponding sub-pipe 302, the rigid support frame has a pipe clamp structure, with a high-temperature resistant elastic rubber pad lining the inner side of the pipe clamp structure. This provides radial support and vibration damping for the sub-pipe 302, and allows for slight axial sliding during thermal expansion and contraction or shell deformation, effectively eliminating stress concentration.

[0038] Furthermore, each battery cell is equipped with a battery cell pressure relief valve 4 and a battery cell fire extinguishing system 5. A single branch pipe 302 connects the battery cell pressure relief valve 4 on the current battery cell to the corresponding battery cell fire extinguishing system 5. Each battery cell is equipped with one battery cell pressure relief valve 4 and multiple battery cell fire extinguishing systems 5. The battery cell fire extinguishing system 5 is preferably a miniature fire extinguishing agent storage tank. This storage tank is pre-pressurized and filled with a special high-efficiency fire extinguishing medium. Its structure is compact and can be directly installed near the battery cell or integrated into the module structure. The purpose is to quickly and directionally suffocate and cool the inside or surface of the battery cell that releases high-temperature smoke through the above-mentioned pipeline passage in a very short time after the pressure relief valve is triggered, thereby strictly limiting thermal runaway within a single battery cell and preventing its spread within the module.

[0039] The pressure relief valve 4 has a pressure relief pipe at its pressure relief port. The final output of the pressure relief pipe extends out of the battery casing 1. The fire extinguishing pipe 3 is connected to the pressure relief pipe. When thermal runaway occurs inside the battery cell and causes a sudden increase in pressure, the pressure relief valve will open rapidly. At this time, most of the high-pressure and high-temperature gas generated will be quickly guided to the outside of the battery pack through the main channel of the pressure relief pipe, thereby rapidly reducing the overall pressure inside the battery pack and preventing the casing from bursting. At the same time, according to the preset diversion structure, a small portion of the high-pressure gas will be introduced into the fire extinguishing pipe 3 connected to it. This portion of gas serves as a trigger signal.

[0040] In one possible implementation, a fire extinguishing system 5 is provided at each of the four corners of each battery cell, and two adjacent battery cells can share a fire extinguishing system 5. Through the pipeline layout, the final output port of each branch pipe 302 of the fire extinguishing pipe 3 is directly opposite to the adjacent fire extinguishing system 5.

[0041] Furthermore, since the battery cell pressure relief valve 4 and the battery cell fire extinguishing system 5 in this case are directly connected by a pressure relief pipe, and the battery cell fire extinguishing system 5 is activated by the action of the battery cell pressure relief valve 4, in order to deal with the situation where the battery cell pressure relief valve 4 is mistakenly opened under non-thermal runaway conditions in some extreme and special scenarios, in one possible implementation, a multi-sensor fusion judgment logic is introduced between the battery cell pressure relief valve 4 and the battery cell fire extinguishing system 5 for joint decision-making. Specifically, an interlock valve is set between the battery cell pressure relief valve 4 and the battery cell fire extinguishing system 5. The interlock valve is controlled by parameters such as the pressure rise rate, temperature signal, and voltage drop inside the battery housing 1. When the above multiple conditions reach the danger threshold simultaneously, the control unit controls the interlock valve to open, connecting the battery cell pressure relief valve 4 and the battery cell fire extinguishing system 5, so as to activate the battery cell fire extinguishing system 5 to release the extinguishing agent, which can greatly reduce the false alarm rate.

[0042] Furthermore, to ensure that the extinguishing agent can act evenly and completely on the surface of the target battery cell, multiple extinguishing agent nozzles 6 are equidistantly arranged on the corresponding section of each sub-pipe 302. To optimize the spraying effect and take into account the structural strength of the pipe, in one specific embodiment, the extinguishing agent nozzle 6 is located in the section of the sub-pipe 302 closest to the side wall of the battery cell. The extinguishing agent nozzle 6 is an arc-shaped opening extending longitudinally, and the central angle corresponding to its arc length is between 120° and 180°. It can be flexibly adjusted along the axial length of the pipe according to the coverage requirements. The arc-shaped opening occupies about half of the pipe wall area on the cross-section of the pipe. While achieving wide-angle fan-shaped spray, it retains the overall structural continuity and bending and torsional stiffness of the pipe to the greatest extent. The edges of the extinguishing agent nozzle 6 are rolled or chamfered to avoid stress concentration and guide the extinguishing agent to diffuse and spray towards the side of the battery cell at a specific angle.

[0043] The integrated fireproof and explosion-proof battery pack for rescue applications features a dual fire extinguishing trigger path to ensure absolute reliability of the fire extinguishing action. The mechanical linkage trigger involves high-temperature gas diverted from the pressure relief valve and guided through the fire extinguishing pipe 3 to directly reach the target cell fire extinguishing system 5, triggering its activation purely physically. This path does not rely on electronic signals and ensures action execution even in extreme cases of battery management system failure. External intervention triggering is achieved through a standard quick-connect interface on the battery casing 1, allowing rescue personnel to connect fire extinguishing equipment externally and precisely inject it into the internal system via the same network of fire extinguishing pipes 3. With a large amount of extinguishing agent added, this pipeline network is topologically optimized. Its branch pipeline 302 uses high-temperature resistant corrugated pipes to uniformly cover all gaps between battery cells in a tree-like structure, ensuring that the extinguishing agent can cover every risk point without dead angles. Combined with the demolition guide area 2 on the outer periphery of the battery casing 1 as a pre-set weak mechanical link, it provides a safe and controllable physical path for external emergency demolition. This design transforms uncontrollable violent demolition into predictable and neat structural cracking, fundamentally avoiding internal secondary short circuits, structural damage, or injury to rescuers caused by rescue operations, creating the primary safety prerequisite for external rescue.

[0044] Secondly, embodiments of this application provide a new energy vehicle, which is equipped with at least one of the above-mentioned integrated fireproof and explosion-proof battery packs for rescue purposes.

[0045] In the description of this application, it should be noted that the terms "upper," "lower," 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 application and simplifying the description, and 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 of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0046] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fireproof and explosion-proof integrated battery pack for rescue operations, characterized in that, include: External components, the external components including a battery housing (1) and a breaching guide area (2) disposed on the battery housing (1). The explosion-proof component includes a fire extinguishing pipe (3) located inside the battery housing (1), and a cell pressure relief valve (4) and a cell fire extinguishing system (5) provided in each cell. One end of the fire extinguishing pipe (3) extends out of the battery housing (1), and the other end is connected to the cell pressure relief valve (4) and the cell fire extinguishing system (5) to guide the high-temperature gas ejected from the cell pressure relief valve (4) to the cell fire extinguishing system (5). The fire extinguishing pipe (3) has a fire extinguishing agent spray outlet (6) on its body.

2. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 1, characterized in that: The battery casing (1) includes a lower housing and an upper cover, and the lower housing has multiple installation spaces for placing battery cells.

3. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 2, characterized in that: The demolition guide area (2) is staggered with the installation space.

4. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 3, characterized in that: The demolition guide area (2) includes a guide groove formed on the side wall of the lower box and / or the upper cover.

5. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 2, characterized in that: The fire extinguishing pipe (3) includes a main pipe (301), and one end of the main pipe (301) extends out of the battery casing (1), while the other end branches to form multiple sub-pipes (302).

6. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 5, characterized in that: Multiple branch pipes (302) are arranged in an interleaved manner and interconnected, and at least one branch pipe (302) is provided at each installation space.

7. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 5, characterized in that: The end of the main pipe (301) extending out of the battery housing (1) is provided with a fire extinguishing agent inlet (7).

8. The integrated fireproof and explosion-proof battery pack for rescue as described in claim 6, characterized in that: Each battery cell is equipped with a battery cell pressure relief valve (4) and a battery cell fire extinguishing system (5). Each of the branch pipes (302) is connected to the battery cell pressure relief valve (4) and the corresponding battery cell fire extinguishing system (5) on the current battery cell.

9. A fireproof and explosion-proof integrated battery pack for rescue as described in claim 5, characterized in that: The fire extinguishing agent outlet (6) is provided in multiple ways, and the multiple fire extinguishing agent outlets (6) are equidistantly arranged on each of the sub-pipes (302).

10. A new energy vehicle, characterized in that, The new energy vehicle is equipped with an integrated fireproof and explosion-proof battery pack for rescue as described in any one of claims 1 to 9.

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