CN219149083U - Battery fire extinguishing structure, secondary battery and power device - Google Patents
Battery fire extinguishing structure, secondary battery and power device Download PDFInfo
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- CN219149083U CN219149083U CN202223471131.7U CN202223471131U CN219149083U CN 219149083 U CN219149083 U CN 219149083U CN 202223471131 U CN202223471131 U CN 202223471131U CN 219149083 U CN219149083 U CN 219149083U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 238000001816 cooling Methods 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 239000007921 spray Substances 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 230000001629 suppression Effects 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 12
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the technical field of batteries, in particular to a battery fire extinguishing structure, a secondary battery and a power device, wherein the battery fire extinguishing structure comprises a battery core module, a water tank, a water pump and a fire extinguishing part; the battery cell module, its downside is provided with the liquid cooling board, and the water tank is linked together with the water pump, and the water pump is linked together with the water inlet of liquid cooling board through total water inlet pipeline, and the delivery port and the water tank of liquid cooling board are linked together, and fire extinguishing unit is linked together with total water inlet pipeline, and fire extinguishing unit is used for spraying the cooling to the battery cell when battery cell thermal runaway. According to the utility model, by arranging the fire extinguishing pipe, when the electric core module is in thermal runaway, the cooling liquid in the fire extinguishing pipe can spray and cool the electric core module in thermal runaway below in time, and can prevent the thermal diffusion from extinguishing fire and cool in time, so that other electric cores and materials are prevented from being ignited by the thermal runaway of a single electric core, and the fire risk of the whole car is reduced.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery fire extinguishing structure, a secondary battery and a power device.
Background
At present, with the popularization and sales of new energy automobiles increasing year by year, the accident of whole car ignition caused by thermal runaway of a battery module is more likely to happen, and the thermal safety of a battery system becomes an important factor affecting the application of the new energy automobiles.
In the safety design of the existing battery system, a heat insulation pad is added between the battery cells in the battery module to delay the thermal runaway of the single battery cell to the adjacent battery cell, but after the thermal runaway of the battery cell, flame is easy to ignite other materials in the battery pack, meanwhile, heat after the thermal runaway is still accumulated in the battery pack, the thermal runaway of other battery cells is extremely easy to be caused after long-time accumulation, and even the whole vehicle fires.
Therefore, there is an urgent need for a battery pack fire extinguishing system to solve the problem of ignition of other battery cells and materials in the battery pack caused by improper control after thermal runaway of the individual battery cells in the existing battery pack.
Disclosure of Invention
In view of this, the utility model provides a battery fire extinguishing structure, a secondary battery and a power device, which aim to solve the problem of ignition of other battery cells and materials in a battery pack caused by improper control after thermal runaway of a single battery cell.
In one aspect, the present utility model provides a battery fire extinguishing structure comprising:
the lower side surface of the battery cell module is provided with a liquid cooling plate;
the water tank is communicated with the water pump, the water pump is communicated with the water inlet of the liquid cooling plate through a total water inlet pipeline, and the water outlet of the liquid cooling plate is communicated with the water tank;
the fire extinguishing part is communicated with the total water inlet pipeline and is used for spraying and cooling the battery cell when the battery cell is out of control;
the fire extinguishing unit is characterized by comprising:
the first three-way valve and the second three-way valve are connected in series on the main water inlet pipeline;
the fire extinguishing pipes are arranged above each electric core module, a liquid inlet of each fire extinguishing pipe is communicated with the first three-way valve, a liquid outlet of each fire extinguishing pipe is communicated with the second three-way valve, and each fire extinguishing pipe is used for forming an opening after being affected by heat of an explosion-proof valve eruption object so as to spray and cool the electric core; wherein,,
the fire extinguishing pipe is higher than the liquid cooling plate, and a preset distance is kept between the first three-way valve and the second three-way valve, so that the pressure difference between the first three-way valve and the second three-way valve is equal to the pressure difference between the liquid cooling plate and the fire extinguishing pipe.
In some embodiments of the present application, the fire suppression section further comprises a water inlet pipe and a water outlet pipe,
one end of the water inlet pipe is communicated with the first three-way valve, and the other end of the water inlet pipe is communicated with the liquid inlet of the fire extinguishing pipe;
one end of the water outlet pipe is communicated with the second three-way valve, and the other end of the water outlet pipe is communicated with a liquid outlet of the fire extinguishing pipe.
In some embodiments of the present application, a plurality of fire extinguishing pipes are arranged in parallel between the water inlet pipe and the water outlet pipe.
In some embodiments of the present application, the fire suppression tube is disposed directly above the explosion protection valve of each cell in the same cell module.
In some embodiments of the present application, the fire suppression tube has a level greater than the levels of the first and second three-way valves.
In some embodiments of the present application, a total water inlet port is provided on the total water inlet line between the first three-way valve and the water pump.
In some embodiments of the present application, a water inlet port is provided on the main water inlet pipe between the second three-way valve and the liquid cooling plate water inlet.
In some embodiments of the present application, the water tank has a level greater than the fire extinguishing portion.
Compared with the prior art, the utility model has the beneficial effects that the fire extinguishing part is arranged above the battery cell module, when the battery cell module is in thermal runaway, the explosion-proof valve erupts above the battery cell in thermal runaway of the fire extinguishing part is fused to form the opening, so that the cooling liquid in the fire extinguishing part can spray and cool the battery cell in thermal runaway below to achieve the effect of blocking thermal diffusion, and the timely fire extinguishing and cooling can prevent the single battery cell from igniting other battery cells and materials in thermal runaway, reduce the fire risk of the whole vehicle and improve the safety performance of the battery pack.
Furthermore, the fire extinguishing part is connected in series on the main water inlet pipeline, so that cooling liquid exists in the fire extinguishing part in real time, and if the phenomenon of thermal runaway of the battery cell module occurs under the condition that the new energy automobile is stopped and powered off, the fire extinguishing loop can still realize the effect of automatic spraying and cooling, the safety of the battery pack is ensured in real time, and the risk of fire is reduced.
Furthermore, the water tank, the water pump and the liquid cooling plate form a complete loop, the fire extinguishing part is connected between the water pump and the liquid cooling plate in parallel through the first three-way valve and the second three-way valve, and the setting height of the water tank and the water pump is higher than that of the fire extinguishing loop, so that when the fire extinguishing loop is fused to form an opening, cooling liquid in the water tank automatically flows to the thermal runaway battery cell under the action of gravity to extinguish the fire and cool the battery cell, the effect of blocking the thermal diffusion in time is achieved, the cooling efficiency and timeliness of the thermal runaway battery cell are improved, and the safety performance of the battery pack is improved.
Further, the height difference exists between the first three-way valve and the second three-way valve and the fire extinguishing pipe, the pressure difference between the water inlet and the water outlet of the fire extinguishing part is equal to the pressure difference formed by the height difference between the fire extinguishing pipe and the liquid cooling plate by adjusting the relative positions of the first three-way valve and the second three-way valve, so that when the battery cell module operates normally, cooling liquid in the fire extinguishing pipe is in a static state, and when the battery cell module is out of control, most of the cooling liquid in the water tank flows into the fire extinguishing pipe to extinguish fire and cool, thereby ensuring that the cooling effect of the liquid cooling plate is reduced by not shunting the cooling liquid in the normal operation state of the battery cell module, simultaneously, the cooling liquid can be sprayed and cooled directly when the thermal runaway of the battery cell module occurs, the overall safety of the battery pack is improved, and the safety risk that the single battery cell thermal runaway ignites other materials is avoided.
On the other hand, the utility model also provides a secondary battery, which comprises the battery fire extinguishing structure.
On the other hand, the utility model also provides a power device which comprises the secondary battery.
The secondary battery and the power device have the same beneficial effects as the battery fire extinguishing structure, and are not repeated here.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of a fire extinguishing system for a battery pack according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of the connection between the point 1 and the point a in fig. 1.
In the figure: 1. a fire extinguishing unit; 11. a fire extinguishing pipe; 12. a water inlet pipe; 13. a water outlet pipe; 2. a battery cell module; 3. a liquid cooling plate; 31. a water outlet; 4. a water tank; 5. a water pump; 6, preparing a base material; a liquid cooling system; 7. a total water inlet pipeline; 71. a total water inlet port; 72. a water inlet port; 73. a first three-way valve; 74. a second three-way valve; 8. and a total water outlet pipeline.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Most of the reasons for the ignition of the electric automobile are the ignition of the battery, and the reasons for the ignition of the battery are mainly thermal runaway of the battery. The thermal runaway refers to that the power battery generates heat during operation, and when the battery temperature is too high or the charging voltage is too high, a chain chemical reaction occurs in the battery, so that the internal pressure and the temperature of the battery rapidly rise, and the thermal runaway of the battery and the combustion are finally caused. There are various reasons for thermal runaway of the battery, and there is a possibility that the temperature of the battery pack itself is not uniform, and ignition is caused by high temperature in a local area, external short circuit, internal short circuit, and the like. However, once one cell has problems, such as short circuit, circuit break, etc., other cells in the battery pack are affected, so that serious problems occur in the battery pack, and finally safety problems are caused.
As shown in fig. 1 and 2, in the battery fire extinguishing structure in this embodiment, the fire extinguishing part 1 is connected in parallel between the liquid cooling plate 3 and the water pump 5 of the water tank 4, so that the fire extinguishing part 1 is filled with cooling liquid in real time, the front and rear relative positions of the first three-way valve 73 and the second three-way valve 74 on the total water inlet pipeline 7 are adjusted, so that the pressure generated by the flow resistance of the first three-way valve 73 and the second three-way valve 74 is equal to the pressure generated by the height difference between the fire extinguishing part 1 and the water inlet 31, the fire extinguishing pipe can be filled with cooling liquid in real time and kept in a static state when the battery cell module 2 is in normal operation, the cooling liquid in the liquid cooling plate 3 is prevented from being shunted, the cooling liquid in the fire extinguishing pipe can be sprayed and cooled in time when the battery cell module 2 is out of heat, the cooling liquid in the water tank 4 is timely flowed into the fire extinguishing pipe to be supplemented under the action of gravity, the cooling efficiency of the fire extinguishing part 1 is improved, the timeliness of cooling the fire extinguishing part 1 is ensured, and the single battery cell thermal runaway caused by the temperature loss caused by the fire extinguishing is avoided, and the safety of the battery cell 2 is improved when the battery cell thermal runaway is used.
Referring to fig. 1, the present embodiment provides a battery fire extinguishing structure, including: the fire extinguishing device comprises a battery cell module 2, a water tank 4, a water pump 5 and a fire extinguishing part 1. The battery cell module 2, its downside is provided with the liquid cooling board 3, the water tank 4 with water pump 5 intercommunication, water pump 5 through total water inlet line 7 with the water inlet of liquid cooling board 3 is linked together, the delivery port of liquid cooling board 3 with water tank 4 is linked together, fire extinguishing part 1 with total water inlet line 7 is linked together, fire extinguishing part 1 is used for when battery cell thermal runaway to the battery cell is sprayed the cooling down.
In a specific embodiment of the present application, the fire extinguishing unit 1 includes a first three-way valve 73 and a second three-way valve 74, the first three-way valve 73 and the second three-way valve 74 are connected in series on the total water inlet pipeline 7, a fire extinguishing pipe 11 is disposed above each of the electric core modules 2, a liquid inlet of the fire extinguishing pipe 11 is communicated with the first three-way valve 73, a liquid outlet of the fire extinguishing pipe 11 is communicated with the second three-way valve 74, and the fire extinguishing pipe 11 is used for forming an opening after being affected by heat of an explosion-proof valve eruption so as to spray and cool the electric core.
In a specific embodiment of the present application, the fire extinguishing pipe is disposed directly above the explosion protection valve of each cell in the same cell module.
In a specific embodiment of the present application, the fire extinguishing pipe 11 is higher than the liquid cooling plate 3, and a preset distance is kept between the first three-way valve 73 and the second three-way valve 74, so that a pressure difference generated between the first three-way valve 73 and the second three-way valve 74 when the water pump is at the maximum output power is equal to a pressure difference between the liquid cooling plate 3 and the fire extinguishing pipe 11.
It can be understood that through parallelly connected fire extinguishing part 1 between liquid cooling board 3 and water pump 5 be provided with the explosion-proof valve directly over every electric core in the electric core module 2, fire extinguishing part 1 set up in directly over the explosion-proof valve, when electric core module 2 takes place thermal runaway, receive the thermal influence of explosion-proof valve eruption thing, fire extinguishing part 1 fusing of top forms the opening, the coolant liquid in the fire extinguishing part 1 can in time spray the cooling to thermal runaway electric core, promote fire extinguishing system's fire-extinguishing cooling efficiency, thereby promote the overall security of battery package, avoid single electric core module 2 thermal runaway to ignite other materials and cause safety accident such as whole car fire, personal and property safety has been guaranteed.
Referring to fig. 1 and 2, in a specific embodiment of the present application, the fire extinguishing unit 1 further includes a water inlet pipe 12 and a water outlet pipe 13, wherein one end of the water inlet pipe 12 is communicated with the first three-way valve, and the other end is communicated with the liquid inlet of the fire extinguishing pipe 11; one end of the water outlet pipe 13 is communicated with the second three-way valve, the other end is communicated with a liquid outlet of the fire extinguishing pipe 11, so that a plurality of fire extinguishing pipes 11 are arranged in parallel between the water inlet pipe 12 and the water outlet pipe 13, a passage is formed among the water inlet pipe 12, the fire extinguishing pipes 11 and the water outlet pipe 13, cooling liquid flows into the fire extinguishing pipes 11 through the water inlet pipe 12 and then flows out through the water outlet pipe 13, and meanwhile, the fire extinguishing pipes 11 are arranged in parallel, so that the fire extinguishing pipes 11 can be filled with cooling liquid in real time, and the fire extinguishing pipes 11 can extinguish a fire and cool a thermal runaway battery cell in time by arranging the fire extinguishing pipes 11 above the explosion-proof valve of the battery cell module 2.
In a specific embodiment of the present application, the fire suppression tube has a greater level than the first and second three-way valves.
It can be understood that in this embodiment, the inflow of the cooling liquid in the fire extinguishing unit 1 is controlled by the first three-way valve 73, the outflow of the cooling liquid in the fire extinguishing unit 1 is controlled by the second three-way valve 74, and the horizontal height of the fire extinguishing pipe 11 is greater than the horizontal heights of the first three-way valve 73 and the second three-way valve 74, and by adjusting the front-back relative positions of the first three-way valve 73 and the second three-way valve 74 in the total water inlet pipeline 7, the pressure generated by the flow resistance between the first three-way valve 73 and the second three-way valve 74 is equal to the pressure generated by the height difference between the fire extinguishing pipe and the first three-way valve 73 and the second three-way valve 74.
Specifically, the pressure difference formed by the influence of the flow resistance in the connecting pipe between the first three-way valve 73 and the second three-way valve 74 is denoted as P1, the pressure difference formed by the height difference between the fire extinguishing pipe and the first three-way valve 73 and the second three-way valve 74 is denoted as P2, the fire extinguishing pipe is right above the explosion-proof valve, the height difference between the fire extinguishing pipe and the first three-way valve 73 and the second three-way valve 74 is defined as H (unit is m), the density of the cooling liquid is ρ (unit is kg/m 3), g is gravity acceleration (unit is m/s 2), p2=pgh, the relative position between the first three-way valve 73 and the second three-way valve 74 is regulated to form a specific value of pressure difference P1 between the connecting pipes, so that p1=p2 is formed.
It can be appreciated that, in this embodiment, through setting up a plurality of fire extinguishing pipes 11 that connect in parallel directly over the explosion-proof valve, the both ends of fire extinguishing pipe 11 are connected with inlet tube 12 and outlet pipe 13 respectively, the interface punishment of inlet tube 12 and outlet pipe 13 is connected with first three-way valve 73 and second three-way valve 74, inflow and outflow of coolant liquid in the control fire extinguishing pipe 11, through controlling p1=p2, can guarantee that the inside real-time cooling liquid that exists of fire extinguishing pipe 11, under the normal operating condition of electric core module 2, the coolant liquid in fire extinguishing pipe 11 keeps stationary state, can not shunt the coolant liquid that flows into liquid cooling plate 3, the cooling effect of liquid cooling plate 3 under the normal operating condition of electric core module 2 has been guaranteed, simultaneously when electric core module 2 appears the thermal runaway phenomenon fire extinguishing pipe 11 forms the fusing opening under the thermal influence of explosion-proof valve eruption thing, the coolant liquid in fire extinguishing pipe 11 can in time put out the cooling to the thermal runaway electric core, delay that needs leading-in coolant liquid to cause after the thermal runaway phenomenon of electric core appears has been avoided, cooling efficiency and performance of fire extinguishing pipe 11 is improved, further the battery safety is guaranteed that the whole fire extinguishing material has not led to the thermal runaway because of the thermal runaway of the electric core is controlled in time.
In a specific embodiment of the present application, a total water inlet port 71 is disposed on the total water inlet pipeline 7 between the first three-way valve 73 and the water pump 5, and a water inlet port 72 is disposed on the total water inlet pipeline 7 between the second three-way valve 74 and the water inlet of the liquid cooling plate 3.
In a specific embodiment of the present application, the water tank 4 has a level greater than that of the fire extinguishing portion 1.
Specifically, in this embodiment, a complete loop is formed between the water pump 5 of the water tank 4 and the liquid cooling plate 3, the liquid cooling plate 3 is disposed below the electric core module 2, the water tank 4 is disposed above the water pump 5, and the water tank 4 and the water pump 5 are disposed on one side of the electric core module 2 and above the electric core module 2. Be provided with total inlet port 71 and inlet port 72 between liquid cooling board 3 and the water pump 5, inlet port 72 is located the one side that is close to liquid cooling board 3, total inlet port 71 is located the one side that is close to water pump 5, be provided with first three-way valve 73 and second three-way valve 74 between inlet port 72 and the total inlet port 71, one side that first three-way valve 73 is close to total inlet port 71, one side that second three-way valve 74 is close to inlet port 72, be connected with the inlet tube in the fire extinguishing part 1 through first three-way valve 73, be connected with the outlet pipe in the fire extinguishing part 1 through second three-way valve 74, connect in parallel with a plurality of fire extinguishing pipe between inlet tube and the outlet pipe, thereby connect fire extinguishing pipe and liquid cooling board 3 parallelly, make the fire extinguishing pipe can exist the coolant liquid in real time.
It can be appreciated that, this embodiment is parallelly connected through setting up the return circuit that fire extinguishing portion 1 and liquid cooling board 3, water tank 4 and water pump 5 formed for there is the coolant liquid in fire extinguishing portion 1 in real time, has guaranteed that fire extinguishing system can carry out timely fire extinguishing cooling under the circumstances that electric core thermal runaway appears, separation thermal diffusion, avoids single electric core thermal runaway to ignite other materials and causes incident such as fire, is improving fire extinguishing cooling efficiency and the security performance of battery package of fire extinguishing system, has ensured the personal property safety of car owner simultaneously.
In addition, the level of the first three-way valve 73 and the second three-way valve 74 for controlling the cooling liquid in the fire extinguishing part 1 is lower than the height of the fire extinguishing pipe, so that the height difference is formed between the fire extinguishing pipe and the first three-way valve 73 and the second three-way valve 74, the front and back relative positions of the first three-way valve 73 and the second three-way valve 74 in the total water inlet pipe are adjusted, the pressure difference P1 generated between the first three-way valve 73 and the second three-way valve 74 due to flow resistance is equal to the pressure difference P2 formed by the height difference between the fire extinguishing pipe and the first three-way valve 73 and the second three-way valve 74, the cooling liquid exists in the fire extinguishing pipe but is in a static state when the battery pack battery core module 2 is in normal operation, the cooling effect of the liquid cooling plate 3 is prevented from being reduced due to the parallel connection of the fire extinguishing part 1 and the liquid cooling plate 3, when the thermal runaway phenomenon appears in electric core module 2, the coolant liquid in fire extinguishing unit 1 and the water tank 4 in time spray the thermal runaway electric core and put out a fire the cooling, avoided because of the fire delay that no coolant liquid caused in taking place electric core thermal runaway fire extinguishing pipe when fire extinguishing unit 1 and liquid cooling board 3 are non-series or parallelly connected to set up, this embodiment has reached through above-mentioned setting method still can realize the effect of automatic spray fire extinguishing cooling when new energy automobile parks outage, the cooling effect of liquid cooling board 3 has been guaranteed simultaneously when electric core module 2 normal operating, the efficiency and the timeliness of the spray cooling of fire extinguishing unit 1 have been promoted, carry out accurate cooling to the thermal runaway electric core, block thermal diffusion, avoid leading to single electric core thermal runaway to pilot other electric cores and materials because of the cooling is untimely, the security performance of battery package wholly promotes.
In another preferred embodiment based on the above-described examples, the present embodiment provides a secondary battery including the battery extinguishing structure provided in the above-described examples. Specifically, the battery fire extinguishing structure in each embodiment is installed in the secondary battery to provide better safety protection for the battery cell module in the secondary battery, so that the fire extinguishing and cooling efficiency of the battery cell module in the secondary battery can be greatly improved when the battery cell module is out of control, and the heat energy diffusion is timely prevented from igniting other materials to cause larger safety accidents.
In still another preferred embodiment based on the above-described embodiment, the present embodiment provides a power device including the secondary battery provided in the above-described embodiment. In particular, the secondary battery of each of the above embodiments is installed within the power plant to provide better protection for the power plant from internal cells or cell modules.
Specifically, the power device may be a vehicle, a train, an aircraft, a ship, or the like.
Specifically, the power device and the secondary battery of the embodiment can achieve the same beneficial effects as the battery fire extinguishing structure in the above embodiment by adopting the battery fire extinguishing structure in the above embodiment, and will not be described here again.
Those of ordinary skill in the art will appreciate that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A battery fire suppression structure comprising:
the bottom or the side surface of the battery cell module is provided with a liquid cooling plate;
the water tank is communicated with the water pump, the water pump is communicated with the water inlet of the liquid cooling plate through a total water inlet pipeline, and the water outlet of the liquid cooling plate is communicated with the water tank;
the fire extinguishing part is communicated with the total water inlet pipeline and is used for spraying and cooling the battery cell when the battery cell is out of control;
the fire extinguishing unit is characterized by comprising:
the first three-way valve and the second three-way valve are connected in series on the main water inlet pipeline;
the fire extinguishing pipes are arranged above each electric core module, a liquid inlet of each fire extinguishing pipe is communicated with the first three-way valve, a liquid outlet of each fire extinguishing pipe is communicated with the second three-way valve, and each fire extinguishing pipe is used for forming an opening after being affected by heat of an explosion-proof valve eruption object so as to spray and cool the electric core; wherein,,
the fire extinguishing pipe is higher than the liquid cooling plate, and a preset distance is kept between the first three-way valve and the second three-way valve, so that the pressure difference between the first three-way valve and the second three-way valve is equal to the pressure difference between the liquid cooling plate and the fire extinguishing pipe.
2. The battery fire extinguishing structure of claim 1, wherein the fire extinguishing portion further comprises a water inlet pipe and a water outlet pipe;
one end of the water inlet pipe is communicated with the first three-way valve, and the other end of the water inlet pipe is communicated with the liquid inlet of the fire extinguishing pipe;
one end of the water outlet pipe is communicated with the second three-way valve, and the other end of the water outlet pipe is communicated with a liquid outlet of the fire extinguishing pipe.
3. The battery fire extinguishing structure of claim 2, wherein a plurality of the fire extinguishing pipes are arranged in parallel between the water inlet pipe and the water outlet pipe.
4. A battery fire extinguishing structure according to claim 3, wherein the fire extinguishing pipe is disposed directly above the explosion-proof valve of each cell in the same cell module.
5. The battery fire suppression structure of claim 1, wherein,
the horizontal height of the fire extinguishing pipe is greater than the horizontal heights of the first three-way valve and the second three-way valve.
6. The battery fire suppression structure according to claim 1, wherein a total water inlet port is provided on the total water inlet line between the first three-way valve and the water pump.
7. The battery fire extinguishing structure according to claim 1, wherein a water inlet port is provided on the main water inlet pipe between the second three-way valve and the liquid cooling plate water inlet.
8. The battery fire extinguishing structure according to any one of claims 1 to 7, wherein a level of the water tank is greater than a level of the fire extinguishing portion.
9. A secondary battery comprising the battery fire extinguishing structure according to any one of claims 1 to 8.
10. A power unit comprising the secondary battery according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223471131.7U CN219149083U (en) | 2022-12-23 | 2022-12-23 | Battery fire extinguishing structure, secondary battery and power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223471131.7U CN219149083U (en) | 2022-12-23 | 2022-12-23 | Battery fire extinguishing structure, secondary battery and power device |
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| Publication Number | Publication Date |
|---|---|
| CN219149083U true CN219149083U (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223471131.7U Active CN219149083U (en) | 2022-12-23 | 2022-12-23 | Battery fire extinguishing structure, secondary battery and power device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117458042A (en) * | 2023-12-25 | 2024-01-26 | 长春众升科技发展有限公司 | Battery placement bin for new energy automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117458042A (en) * | 2023-12-25 | 2024-01-26 | 长春众升科技发展有限公司 | Battery placement bin for new energy automobile |
| CN117458042B (en) * | 2023-12-25 | 2024-05-14 | 长春众升科技发展有限公司 | Battery placement bin for new energy automobile |
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