CN220086183U - Temperature-eliminating integrated immersed energy storage system - Google Patents

Abstract

The utility model discloses a temperature-eliminating integrated immersed energy storage system, which can realize the temperature-equalizing circulation of a temperature control medium by arranging a temperature-equalizing pipeline system in an energy storage compartment; the temperature of the energy storage monomers under the normal working condition is kept within a set temperature range by adopting an immersed mode, and the difference value between the temperatures of different energy storage monomers belonging to the same energy storage bag and the temperature between the energy storage monomers belonging to different energy storage bags is smaller; the temperature control unit is arranged to control the temperature of the temperature control medium, so that the temperature difference of the temperature control medium in the compartment-level liquid storage tanks of different energy storage compartments is reduced, and the temperature uniformity among the different energy storage compartments is further improved; through setting up fire engine group, when energy storage monomer takes place thermal runaway, fire engine group can be through fire control feed liquor house steward, fire control feed liquor are in charge of and fire control feed liquor branch pipe is poured into or is sprayed the fire control medium into corresponding energy storage package fast, can realize fire control submergence to reduce thermal runaway influence scope.

Description

Temperature-eliminating integrated immersed energy storage system

Technical Field

The utility model belongs to the technical field of electric energy storage, and particularly relates to a temperature-eliminating integrated immersed energy storage system.

Background

Thermal runaway of lithium batteries is caused by the fact that the rate of heat generation of the battery is much higher than the rate of heat dissipation, and heat is accumulated in large amounts and not dissipated in time. Thermal runaway of lithium batteries is an energy positive feedback cycle process: the elevated temperature causes the system to heat up, which in turn causes the system to become hotter. There are many causes of thermal runaway of lithium batteries, and there are mainly the following points.

1) Overcharge triggered lithium battery thermal runaway: the battery itself has overshoot protection, but in the event of a problem failure of such overshoot protection, continued charging of the battery can result in battery overshoot triggering thermal runaway. Along with the continuous use of the battery, the aging phenomenon of the battery is serious gradually, the consistency of the battery pack is poorer and worse, and the battery is easy to have thermal safety problem if overcharged. The safe charging should be performed according to the instructions at any time.

2) Overheat triggering lithium battery thermal runaway: in normal use of the lithium battery, when the battery is discharged at a high speed or meets a limit working condition, high-current discharge is required to be continued, at the moment, the temperature inside the battery is gradually increased, and when a large amount of heat of the battery is accumulated, if the discharge current of the battery is not limited in time, the thermal runaway phenomenon of the lithium battery is most likely to be caused.

3) Mechanical triggering lithium battery thermal runaway: the thermal runaway of the battery can be caused by impact deformation of the lithium battery pack, internal short circuit of the battery pack, and other damage to the battery pack.

In addition to the above reasons, overdischarge of the battery, internal short circuits of the battery, and the like may also cause thermal runaway of the battery. Particularly, in the thermal runaway explosion stage of the battery, the electrolyte reacts with oxygen generated by the positive electrode reaction to react vigorously, the battery fires, and the damage such as fire and explosion is caused, so that the life and property safety of people is greatly threatened.

Disclosure of Invention

Therefore, the utility model aims to provide a temperature-eliminating integrated immersed energy storage system which can realize temperature equalization control under normal operation conditions and keep the temperature within a set temperature range; when thermal runaway occurs, fire fighting submersion can be achieved to reduce the thermal runaway impact range.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the temperature-eliminating integrated immersed energy storage system comprises a temperature control unit, a fire-fighting unit and at least one energy storage compartment, wherein at least one energy storage cluster is arranged in the energy storage compartment, and at least one energy storage bag is arranged in the energy storage cluster;

a temperature equalization pipeline system is arranged in the energy storage compartment, and comprises a compartment level liquid storage tank, a temperature equalization Wen Jinye main pipe and a temperature equalization liquid return main pipe; the equal Wen Jinye main pipe is connected with the carriage-level liquid storage tank; a uniform Wen Jinye branch pipe is arranged on the uniform temperature liquid inlet main pipe; the uniform Wen Jinye branch pipes are arranged in one-to-one correspondence with the energy storage clusters arranged in the same energy storage compartment; the uniform temperature liquid inlet branch pipes are provided with uniform Wen Jinye branch pipes, the uniform Wen Jinye branch pipes are arranged in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster, and the uniform Wen Jinye branch pipes are communicated with the corresponding energy storage bags; the temperature-equalizing liquid return main pipe is provided with temperature-equalizing liquid return branch pipes which are arranged in one-to-one correspondence with the energy storage clusters arranged in the same energy storage compartment; the temperature-equalizing liquid return branch pipes are arranged on the temperature-equalizing liquid return branch pipes and are in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster, and the temperature-equalizing liquid return branch pipes are communicated with the corresponding energy storage bags; a temperature-equalizing liquid inlet pump is arranged on the temperature-equalizing liquid inlet main pipe;

the temperature control unit is provided with a temperature control liquid outlet main pipe and a temperature control liquid return main pipe, the temperature control liquid outlet main pipe is provided with temperature control liquid outlet branch pipes, the temperature control liquid outlet branch pipes are arranged in one-to-one correspondence with the energy storage boxes, and the temperature control liquid outlet branch pipes are connected with the box-level liquid storage boxes arranged in the corresponding energy storage boxes; the temperature-equalizing liquid return main pipe is provided with a first liquid return branch and a second liquid return branch, the first liquid return branch is connected with the corresponding carriage-level liquid storage tank, and the second liquid return branch is connected with the temperature-control liquid return main pipe;

the fire-fighting unit is provided with a fire-fighting liquid inlet main pipe, the fire-fighting liquid inlet main pipe is provided with fire-fighting liquid inlet branch pipes, the fire-fighting liquid inlet branch pipes are arranged in one-to-one correspondence with the energy storage clusters, the fire-fighting liquid inlet branch pipes are provided with fire-fighting liquid inlet branch pipes, and the fire-fighting liquid inlet branch pipes are arranged in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster; the energy storage package includes a package shell, install at least one energy storage monomer in the package shell, fire control feed liquor branch pipe is used for corresponding in the energy storage package in the energy storage monomer take place thermal runaway in the energy storage package pour into or to the energy storage package sprays fire control medium.

Further, the branch pipes Wen Jinye are connected with the bottom of the energy storage bag; and each temperature-equalizing liquid inlet branch pipe is respectively provided with a temperature-equalizing liquid inlet electromagnetic valve for controlling liquid inlet flow.

Further, the temperature equalizing liquid return branch pipe is connected with the top of the energy storage bag so as to control the height of the immersed liquid level in the energy storage bag; and each temperature-equalizing liquid return branch pipe is respectively provided with a temperature-equalizing liquid return electromagnetic valve for controlling liquid return flow.

Further, liquid return control valves for controlling the temperature control medium to flow back to the corresponding carriage level liquid storage tanks or the temperature control unit are respectively arranged on the first liquid return branch and the second liquid return branch.

Further, the bag shell adopts a closed structure; the top of the bag shell is provided with a bag-level explosion-proof valve, and the liquid outlet of the fire-fighting liquid inlet branch pipe is arranged right above the bag-level explosion-proof valve; or, the fire control feed liquor branch pipe is communicated with the inside of the package shell.

Further, the energy storage compartment is provided with a compartment housing capable of storing fire-fighting media, or the energy storage cluster is provided with a cluster housing capable of storing fire-fighting media.

Further, a overflow liquid pipe is arranged at the top of the carriage shell or the cluster shell.

Further, the overflow liquid return pipe is connected with the liquid return box.

Further, fire control feed liquor branch pipe with the inside intercommunication of package shell, energy storage railway carriage or compartment bottom or energy storage cluster bottom are equipped with the liquid return groove, the bottom of liquid return groove is equipped with the bottom liquid return pipe.

Further, the device also comprises a liquid return box, and the bottom liquid return pipe is connected with the liquid return box.

Further, the bag housing adopts an open structure with an open top; the fire control feed liquor branch pipe is located the top of package shell open-ended, be equipped with on the fire control feed liquor branch pipe and be used for to pour into the fire control liquid outlet of fire control medium into in the package shell.

Further, at least one energy storage monomer is arranged in the bag shell, and the fire-fighting liquid outlet corresponds to the energy storage monomer in the energy storage bag in a one-to-one correspondence manner.

Further, a single explosion-proof valve is arranged on the top surface of the energy storage single body, and the fire-fighting liquid outlet is arranged right above the corresponding single explosion-proof valve.

Further, a fire-fighting sealing film which is flushed when the single explosion-proof valve is exploded is arranged on the fire-fighting liquid outlet.

Further, the energy storage compartment is provided with a closed compartment housing, or the energy storage cluster is provided with a closed cluster housing.

Further, a overflow liquid pipe is arranged at the top of the carriage shell or the cluster shell.

Further, the overflow liquid return pipe is connected with the liquid return box.

Further, the carriage-level liquid storage tanks are arranged as one, and the carriage-level liquid storage tanks are arranged at the bottom or the top of the corresponding energy storage carriage; when the carriage-level liquid storage tanks are arranged at the tops of the corresponding energy storage carriages, the temperature-equalizing liquid return main pipe is provided with a liquid return pump.

Further, two carriage-level liquid storage tanks are arranged, the two carriage-level liquid storage tanks are a bottom liquid storage tank and a top liquid storage tank respectively, and the bottom liquid storage tank and the top liquid storage tank are respectively positioned at the top and the bottom of the corresponding energy storage carriage;

the uniform Wen Jinye main pipe is connected with the top liquid storage tank, and the uniform temperature liquid return main pipe is connected with the bottom liquid storage tank; a lifting pipe is arranged between the bottom liquid storage tank and the top liquid storage tank, and a lifting pump for pumping the temperature control medium in the bottom liquid storage tank into the top liquid storage tank is arranged on the lifting pipe; or alternatively, the first and second heat exchangers may be,

the uniform Wen Jinye main pipe is connected with the bottom liquid storage tank, the uniform temperature liquid return main pipe is connected with the top liquid storage tank, and a liquid return pump is arranged on the uniform temperature liquid return main pipe; a connecting pipe is arranged between the bottom liquid storage tank and the top liquid storage tank.

Further, an exhaust hole and an exhaust fan are arranged at the top of the energy storage compartment.

Further, when the temperature-equalizing liquid return main pipe is connected with the carriage-level liquid storage tank positioned at the bottom of the energy storage carriage, the top parts of all the temperature-controlling liquid return branch pipes arranged on the temperature-equalizing liquid return main pipe are provided with exhaust branch pipes extending to the top part of the energy storage carriage, or the carriage-level liquid storage tank positioned at the bottom of the energy storage carriage is provided with an exhaust pipe extending to the top part of the energy storage carriage; when the temperature-equalizing liquid return main pipe is connected with the carriage-level liquid storage tank positioned at the top of the energy storage carriage, an exhaust port is arranged on the carriage-level liquid storage tank positioned at the top of the energy storage carriage.

Further, the energy storage cluster comprises a cluster bracket, and the bag shell is fixedly arranged on the cluster bracket; or, a placing platform for placing the energy storage bag is arranged on the cluster support.

The fire-fighting liquid return main pipe is arranged on the liquid return box;

the fire-fighting liquid return main pipe is connected with the temperature-equalizing liquid return main pipe; or alternatively, the first and second heat exchangers may be,

the temperature equalization liquid return branch pipe is provided with a fire-fighting liquid return branch pipe, and the fire-fighting liquid return branch pipe is connected with the fire-fighting liquid return main pipe; or alternatively, the first and second heat exchangers may be,

the fire-fighting liquid return main pipe is connected with fire-fighting liquid return branch pipes which are arranged in one-to-one correspondence with energy storage clusters arranged in the same energy storage compartment; the fire-fighting liquid return branch pipes are connected with fire-fighting liquid return branch pipes, and the fire-fighting liquid return branch pipes are arranged in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster; and the fire-fighting liquid return branch pipe is connected with the corresponding energy storage bag.

The utility model has the beneficial effects that:

according to the temperature-eliminating integrated immersed energy storage system, a temperature-equalizing pipeline system is arranged in an energy storage compartment, a temperature control medium is conveyed into each Wen Jinye branch pipe of each energy storage cluster by using a main pipe of each Wen Jinye, and then the temperature control medium is injected into each energy storage bag through a branch pipe of each Wen Jinye; the liquid level of the temperature control medium in the bag shell of the energy storage bag is controlled by the temperature-equalizing liquid return branch pipe, the temperature control medium submerges the energy storage monomer, and after the liquid level of the temperature control medium in the energy storage bag reaches a set height, the temperature control medium flows back into the compartment level liquid storage tank through the temperature-equalizing liquid return branch pipe, the temperature-equalizing liquid return branch pipe and the temperature-equalizing liquid return main pipe in sequence, so that the circulation of the temperature control medium is realized; the temperature of the energy storage monomers under the normal working condition is kept within a set temperature range by adopting an immersed mode, and the difference value between the temperatures of different energy storage monomers belonging to the same energy storage bag and the temperature between the energy storage monomers belonging to different energy storage bags is smaller; the temperature control unit is arranged, the temperature of the temperature control medium can be controlled by the temperature control unit, the temperature control medium subjected to temperature control by the temperature control unit is transmitted into the compartment-level liquid storage tanks of the energy storage compartments by the temperature control liquid outlet main pipe, so that the temperature of the temperature control medium in the compartment-level liquid storage tanks is kept within a set range, meanwhile, the temperature difference of the temperature control medium in the compartment-level liquid storage tanks of different energy storage compartments is reduced, and the temperature uniformity performance among different energy storage compartments is further improved; the liquid return of the temperature control unit can be directly carried out through a carriage-level liquid storage tank or directly through a uniform-temperature liquid return main pipe, so that the temperature control circulation control of temperature control mediums in each energy storage carriage is realized; through setting up fire engine group, when energy storage monomer takes place thermal runaway, fire engine group can be through fire control feed liquor house steward, fire control feed liquor are in charge of and fire control feed liquor branch pipe is poured into the energy storage package that corresponds fast into fire control medium, can realize fire control submergence to reduce thermal runaway influence scope.

The utility model also has the following advantages:

1) The temperature control medium and the fire control medium are both insulating and nonflammable safety liquid, the thermal management system consists of double circulation of temperature control and uniform temperature coupling, so that the energy storage monomer is completely immersed in the safety liquid medium, the temperature is regulated, the temperature rise and the temperature consistency of the energy storage monomer and the energy storage bag are effectively managed, when the energy storage charge and discharge multiplying power is less than 1C, the temperature difference of the energy storage monomer is less than 2 ℃, the safe and reliable operation of the energy storage system is effectively ensured, and the service life of the battery is prolonged by more than 10%;

2) The whole battery operation process is immersed in the safety liquid, the combustible substances ejected during the battery thermal runaway are firstly filtered by the safety liquid and then discharged out of the energy storage system through the independent exhaust hole and the exhaust fan, and meanwhile, fire-fighting media are injected into the corresponding energy storage bags to prevent air from entering;

3) When a certain energy storage monomer in a certain energy storage bag is in thermal runaway, as the flowable heat-insulating safety liquid is arranged between the energy storage monomers, the thermal spread of the thermal runaway of the energy storage monomer is stopped, the absolute incombustibility of the energy storage system when the thermal runaway of the monomer occurs is realized, and the explosion hidden danger of the thermal runaway is fundamentally solved;

4) BMS gathers board, equalizing plate and all submerges in safe liquid, can eliminate circuit board heat dissipation cost, stops heat spreading and fire hidden danger, and the outward appearance is succinct.

Drawings

In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the present utility model provides the following drawings for description:

FIG. 1 is a schematic diagram of an embodiment of an integrated temperature and fire fighting submerged energy storage system according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the tank when the tank is disposed on top of the energy storage compartment;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic diagram of the structure of the tank when the tank is disposed at the bottom of the energy storage tank;

FIG. 5 is a schematic diagram of the structure of the two carriage-level liquid storage tanks;

FIG. 6 is an enlarged view of area B of FIG. 5;

FIG. 7 is a schematic diagram of the structure of the fire-fighting liquid return main pipe when connected with the temperature-equalizing liquid return branch pipe;

FIG. 8 is a schematic view of the structure of the bag housing in an open configuration;

FIG. 9 is an enlarged view of region C of FIG. 8;

fig. 10 is a schematic structural view of the fire-fighting liquid return branch pipe and the fire-fighting liquid return branch pipe.

Reference numerals illustrate:

100-temperature control unit; 101-a temperature control liquid outlet main pipe; 102-a temperature control liquid return main pipe; 103-a second liquid return branch; 104-a liquid return control valve;

200-fire-fighting units; 201-a fire control liquid inlet main pipe; 202-fire control liquid inlet branch pipe; 203-fire control liquid inlet branch pipes; 204, a liquid return box; 205-fire control liquid return header pipe; 206-a fire control liquid return valve; 207-fire control liquid return branch; 208-a fire-fighting liquid return valve; 209-fire-fighting liquid return branch pipe; 210-a fire-fighting liquid return branch pipe;

300-energy storage compartment; 301-an energy storage cluster; 302-an energy storage package; 303-a packet shell; 304-a bag-level explosion-proof valve; 305-cluster shell; 306-overflow liquid return pipe; 307-fire control liquid outlet;

310-compartment level liquid storage tank; 310 a-a bottom tank; 310 b-top tank; 311-average Wen Jinye header pipes; 312-each Wen Jinye is divided into a plurality of tubes; 313-average Wen Jinye branch pipes; 314-all Wen Jinye solenoid valves; 315-homogenizing temperature liquid return main pipe; 316-homogenizing temperature liquid return branch pipe; 317-a temperature equalization liquid return branch pipe; 318-a temperature-equalizing liquid return electromagnetic valve; 319-a first liquid return branch; 320-liquid return control valve; 321-a temperature-equalizing liquid return valve; 322-liquid return tank; 323-bottom liquid return pipe; 324-a liquid return pump; 325-riser; 326-a lift pump; 328-vent holes; 329-an exhaust fan; 330-exhaust manifold.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the utility model, so that those skilled in the art may better understand the utility model and practice it.

As shown in fig. 1, the temperature-eliminating integrated immersed energy storage system of the embodiment comprises a temperature control unit 100, a fire-fighting unit 200 and at least one energy storage compartment 300, wherein at least one energy storage cluster 301 is arranged in the energy storage compartment 300, and at least one energy storage bag 302 is arranged in the energy storage cluster 301. Specifically, in this embodiment, 4 energy storage clusters 301 are disposed in each energy storage compartment 300, and 7 energy storage bags 302 are installed in each energy storage cluster 301. The number of the energy storage compartments 300 in this embodiment is two, and of course, the number of the energy storage compartments 300 may be 1, 3 or more than 3 according to actual needs, which is not described again.

As shown in fig. 2-8, a temperature equalization pipe system is disposed in the energy storage compartment 300 of the present embodiment, and the temperature equalization pipe system includes a compartment level liquid storage tank 310, a temperature equalization Wen Jinye main pipe 311 and a temperature equalization return main pipe 315. Each Wen Jinye manifold 311 is connected to the carriage level reservoir 310. All Wen Jinye main pipes 311 are provided with all Wen Jinye branch pipes 312, all Wen Jinye branch pipes 312 are arranged in one-to-one correspondence with energy storage clusters 301 arranged in the same energy storage compartment 300, namely in the embodiment, 4 all Wen Jinye branch pipes 312 are arranged in each energy storage compartment 300. The branch pipes 312 of each Wen Jinye are provided with branch pipes 313 of each Wen Jinye, the branch pipes 313 of each Wen Jinye are arranged in one-to-one correspondence with the energy storage bags 302 arranged in the same energy storage cluster 301, and the branch pipes 313 of each temperature-equalizing liquid inlet are communicated with the corresponding energy storage bags 302. That is, in this embodiment, 7 branch pipes 313 each Wen Jinye are provided on each of the branch pipes Wen Jinye and 312. In the preferred implementation manner of this embodiment, the branch pipes 313 of each Wen Jinye are connected to the bottom of the energy storage bag 302, and each branch pipe 313 of each Wen Jinye is provided with an electromagnetic valve 314 of each Wen Jinye for controlling the inflow rate of the temperature control medium. Because the flow resistance of the temperature control medium in each energy storage bag 302 and the heights of different energy storage bags 302 are different, the difference of the flow rates of the temperature control medium in different energy storage bags 302 can be within a set error range through the temperature equalization liquid inlet electromagnetic valve 314, so that the effect of temperature equalization control is better achieved.

The temperature-equalizing liquid return main pipe 315 of the embodiment is provided with temperature-equalizing liquid return branch pipes 316, and the temperature-equalizing liquid return branch pipes 316 are arranged in one-to-one correspondence with the energy storage clusters 301 arranged in the same energy storage compartment 300, namely, 4 temperature liquid return branch pipes 316 are arranged in each energy storage compartment 300. The temperature-equalizing liquid return branch pipes 316 of the present embodiment are provided with temperature-equalizing liquid return branch pipes 317, the temperature-equalizing liquid return branch pipes 317 are arranged in a one-to-one correspondence with the energy storage bags 302 arranged in the same energy storage cluster 301, and the temperature-equalizing liquid return branch pipes 317 are communicated with the corresponding energy storage bags 302, i.e. in the present embodiment, 7 temperature-equalizing liquid return branch pipes 317 are provided on each temperature-equalizing liquid return branch pipe 316. In a preferred implementation manner of this embodiment, each of the temperature-equalizing liquid return branch pipes 317 is provided with a temperature-equalizing liquid return solenoid valve 318 for controlling the liquid return flow rate of the pore medium, so that the liquid level in the energy storage bag 302 is kept within a set range, and the technical purpose of immersing the energy storage bag 302 is achieved. In this embodiment, the temperature equalizing liquid return branch 317 is connected to the top of the energy storage pack 302 to control the liquid level of the temperature control medium immersed in the energy storage pack 302. In this embodiment, the common pipe Wen Jinye is provided with a common temperature liquid inlet pump 318 to provide the pressure required by the temperature control medium liquid inlet 3.

The temperature control unit 100 is provided with a temperature control liquid outlet main pipe 101 and a temperature control liquid return main pipe 102, the temperature control liquid outlet main pipe 101 is provided with temperature control liquid outlet branch pipes, the temperature control liquid outlet branch pipes are arranged in one-to-one correspondence with the energy storage boxes 300, and the temperature control liquid outlet branch pipes are connected with the box-level liquid storage boxes 310 arranged in the corresponding energy storage boxes 300. The temperature-equalizing liquid return main pipe 315 is provided with a first liquid return branch 319 and a second liquid return branch 103, the first liquid return branch 319 is connected with the corresponding compartment-level liquid storage tank 310, and the second liquid return branch 103 is connected with the temperature-control liquid return main pipe 102. The first liquid return branch 319 of the present embodiment is provided with a liquid return control valve 320, the second liquid return branch 103 is provided with a liquid return control valve 104, and the liquid return control valve 320 and the liquid return control valve 104 are used for controlling the temperature control medium to flow back to the corresponding compartment level liquid storage tank 310 or the temperature control unit 100. Specifically, when the temperatures of the compartment level liquid storage tank 310 and the temperature control medium in the temperature equalization liquid return header pipe 315 are within the set temperature range, the liquid return control valve 320 is opened, the liquid return control valve 104 is closed, and the temperature control medium directly flows back into the corresponding compartment level liquid storage tank 310 through the first liquid return branch 319. When the temperature of the temperature control medium in the compartment level liquid storage tank 310 or the temperature-equalizing liquid return main pipe 315 is outside the set temperature range, the liquid return control valve 320 is closed, the liquid return control valve 104 is opened, the temperature control medium flows back to the temperature control unit 100 through the second liquid return branch 103, and the temperature control medium with the temperature regulated by the temperature control unit 100 enters the corresponding compartment level liquid storage tank 310 again, so that the temperature of the temperature control medium in the compartment level liquid storage tank 310 is kept within the set range.

The fire-fighting unit 200 is provided with a fire-fighting liquid inlet main pipe 201, the fire-fighting liquid inlet main pipe 201 is provided with fire-fighting liquid inlet branch pipes 202, and the fire-fighting liquid inlet branch pipes 202 are arranged in one-to-one correspondence with the energy storage clusters 301, namely, in the embodiment, 4 fire-fighting liquid inlet branch pipes 202 are arranged in each energy storage compartment 300. The fire-fighting liquid inlet branch pipes 203 are arranged on the fire-fighting liquid inlet branch pipes 202 of the embodiment, and the fire-fighting liquid inlet branch pipes 203 are arranged in one-to-one correspondence with the energy storage bags 302 arranged in the same energy storage cluster 301, namely, in the embodiment, 7 fire-fighting liquid inlet branch pipes 203 are arranged on each fire-fighting liquid inlet branch pipe 202. The energy storage package 302 includes a package housing 303, at least one energy storage monomer is installed in the package housing 303, and the fire control liquid inlet branch pipe 203 is used for injecting fire control medium into the energy storage package or spraying fire control medium into the energy storage package 302 when thermal runaway occurs to the energy storage monomer in the corresponding energy storage package 302. In a preferred implementation manner of this embodiment, the temperature-elimination integrated immersion energy storage system of this embodiment further includes a liquid return tank 204, and a fire-fighting liquid return manifold 205 is disposed on the liquid return tank 204.

There are various ways of refluxing the fire fighting medium, as follows.

As shown in fig. 2,4,5 and 8, in one implementation of the present embodiment, the fire-fighting liquid return manifold 205 is connected to the temperature-equalizing liquid return manifold 315, and specifically, the fire-fighting liquid return manifold 205 is provided with a fire-fighting liquid return valve 206. During normal working conditions, the fire-fighting liquid return valve 206 is closed; when thermal runaway occurs in the energy storage monomer, fire control medium is injected into the corresponding energy storage compartment 300 or the energy storage cluster 301 through the fire control liquid inlet main pipe 201, meanwhile, the liquid return control valve 320 and the liquid return control valve 104 are closed, the fire control liquid return valve 206 is opened, liquid flow enters the liquid return tank 204, and the fire control medium is prevented from polluting the compartment-level liquid storage tank 310 and the temperature control medium in the temperature control unit 100.

As shown in fig. 7, in another implementation manner of this embodiment, the temperature equalizing liquid return branch pipe 316 is provided with a fire-fighting liquid return branch pipe 207, and the fire-fighting liquid return branch pipe 207 is connected to the fire-fighting liquid return main pipe 205. The fire-fighting liquid return branch 207 and the temperature-equalizing liquid return branch pipe 316 are respectively provided with a temperature-equalizing liquid return valve 321 and a fire-fighting liquid return valve 208 for controlling liquid flow to enter the temperature-equalizing liquid return main pipe 315 or the fire-fighting liquid return main pipe 205. Under normal working conditions, the temperature-equalizing liquid return valve 321 is opened, and the fire-fighting liquid return valve 208 is closed; when thermal runaway occurs in the energy storage monomer, fire control medium is injected into the corresponding energy storage compartment 300 or the energy storage cluster 301 through the fire control liquid inlet main pipe 201, meanwhile, the temperature-equalizing liquid return valve 321 corresponding to the energy storage compartment 300 or the energy storage cluster 301 is closed, the fire control liquid return valve 208 is opened, and liquid flow in the corresponding energy storage compartment 300 or the energy storage cluster 301 flows back into the liquid return tank 204 through the fire control liquid return main pipe 205, so that not only can the fire control medium be prevented from polluting the compartment-level liquid storage tank 310 and the temperature control medium in the temperature control unit 100, but also the normal operation of other energy storage compartments 300 or the energy storage clusters 301 can not be influenced.

As shown in fig. 10, in another implementation manner of this embodiment, the fire-fighting liquid return main pipe 205 is connected with fire-fighting liquid return branch pipes 209, and the fire-fighting liquid return branch pipes 209 are arranged in a one-to-one correspondence with the energy storage clusters 301 arranged in the same energy storage compartment 300, that is, in this embodiment, 4 fire-fighting liquid return branch pipes 209 are arranged in each energy storage compartment 300. Fire-fighting liquid return branch pipes 210 are connected to the fire-fighting liquid return branch pipes 209, and the fire-fighting liquid return branch pipes 210 are arranged in one-to-one correspondence with energy storage bags 302 arranged in the same energy storage cluster 301, namely, in the embodiment, 7 fire-fighting liquid return branch pipes 210 are connected to each fire-fighting liquid return branch pipe 210. Fire return manifold 210 is connected to a corresponding energy storage pack 302 and fire return manifold 205 is connected to return tank 204. That is, in this embodiment, a separate fire protection return line system is provided. In this way, after thermal runaway occurs in the energy storage monomer, the temperature-equalizing liquid return branch pipe 317 connected to the corresponding energy storage bag 302 can be closed, so that the liquid flows back to the liquid return tank 204 through the fire-fighting liquid return branch pipe 210, the fire-fighting liquid return branch pipe 209 and the fire-fighting liquid return main pipe 205.

The bag housing has two kinds of closed structures and open structures as follows.

As shown in fig. 2 to 7, in one of the embodiments, the package housing 303 adopts a closed type structure. The top of the bag housing 303 is provided with a bag-level explosion-proof valve 304, and a liquid outlet of the fire-fighting liquid inlet branch pipe 203 is arranged right above the bag-level explosion-proof valve 304; alternatively, fire-fighting liquid inlet manifold 203 communicates with the interior of enclosure 303. Specifically, at this time, a tank housing capable of storing fire-fighting media may be provided in the energy storage tank 300, or the energy storage cluster 301 may be provided with a cluster housing 305 capable of storing fire-fighting media; meanwhile, a overflow drain pipe 306 is provided at the top of the car housing or cluster housing 305. In this embodiment, a spillover drain line 306 is connected to the drain back tank 204. In this embodiment, each energy storage cluster 301 is provided with a cluster housing 305 capable of storing fire-fighting media, when thermal runaway occurs in an energy storage monomer, fire-fighting submergence can be performed on the energy storage cluster 301, the consumption of fire-fighting media can be reduced, and meanwhile, normal operation of other energy storage clusters 301 is not affected. In other embodiments of the present embodiment, when the fire-fighting liquid inlet branch pipe 203 is communicated with the inside of the package shell 303, the bottom of the energy storage compartment 300 or the bottom of the energy storage cluster 301 is provided with a liquid return groove 322, the bottom of the liquid return groove 322 is provided with a bottom liquid return pipe 323, and the bottom liquid return pipe 323 is connected with the liquid return tank 204. In this way, when the energy storage monomer is out of control, the fire-fighting medium can be injected into the corresponding energy storage bag 302 through the fire-fighting liquid inlet branch pipe 203, and meanwhile, the temperature-equalizing liquid return electromagnetic valve 318 on the temperature-equalizing liquid return branch pipe 317 connected with the energy storage bag 302 is closed, so that the fire-fighting medium is prevented from entering the temperature-equalizing liquid return branch pipe 316; in this way, the fire-fighting medium overflowed from the energy storage package 302 flows back to the liquid return tank 204 through the liquid return tank 322 and the bottom liquid return pipe 323, and no interference is caused to the normal operation of other energy storage packages 302 in the same energy storage cluster 301.

As shown in fig. 8-9, in one of the embodiments, the package housing 303 employs an open-top structure. Fire control inlet branch pipe 203 is located package shell 303 open top, is equipped with the fire control outlet 307 that is used for pouring into the fire control medium into package shell 303 on the fire control inlet branch pipe 203. In a preferred implementation of this embodiment, at least one energy storage monomer is installed in the packet shell 303, and the fire-fighting liquid outlet is disposed in one-to-one correspondence with the energy storage monomer disposed in the corresponding energy storage packet 302. Preferably, the energy storage monomer is provided with a monomer explosion-proof valve on the top surface, the fire-fighting liquid outlet 307 is arranged right above the corresponding monomer explosion-proof valve, a fire-fighting sealing film which is flushed when the monomer explosion-proof valve is exploded can be arranged on the fire-fighting liquid outlet 307, and when the energy storage monomer is out of control and the monomer explosion-proof valve is opened, the fire-fighting liquid outlet 307 can be automatically opened. In this embodiment, a closed car housing is required to be provided on the energy storage car 300, or a closed cluster housing 305 is provided on the energy storage cluster, and a overflow drain pipe 306 is provided on top of the car housing or cluster housing 305. In this embodiment, a closed cluster housing 305 is disposed on the energy storage cluster, that is, when the energy storage monomer is out of control, the fire-fighting liquid inlet branch pipe 203 is used to inject fire-fighting medium into the energy storage bag 302 through the top opening of the package housing 303, and the fire-fighting medium overflowed through the top opening of the package housing 303 enters the closed cluster housing 305 until the liquid level of the fire-fighting medium reaches the overflow liquid pipe 306 to submerge all the energy storage bags 302 in the energy storage cluster 305. In this embodiment, an overflow return line 306 is connected to the return tank 204.

Specifically, the number and location of the compartment level reservoirs 310 may be provided in a variety of ways, as follows.

(1) The compartment level liquid storage tanks 310 are provided as one, and the compartment level liquid storage tanks 310 are provided at the bottoms of the corresponding energy storage compartments 300, as shown in fig. 4 and 8.

(2) The number of the carriage-level liquid storage tanks 310 is one, the carriage-level liquid storage tanks 310 are arranged at the top of the corresponding energy storage carriage 300, and in order to enable Wen Kongjie to flow back into the carriage-level liquid storage tanks 310, a liquid return pump 324 is arranged on the temperature-equalizing liquid return main pipe 315, as shown in fig. 2 and 7.

(3) The number of the compartment level liquid storage tanks 310 is two, the two compartment level liquid storage tanks 310 are a bottom liquid storage tank 310a and a top liquid storage tank 310b, and the bottom liquid storage tank 310a and the top liquid storage tank 310b are respectively positioned at the top and the bottom of the corresponding energy storage compartment 300, as shown in fig. 5. In this embodiment, the common Wen Jinye manifold 311 is connected to the top tank 310b, and the common temperature return manifold 315 is connected to the bottom tank 310 a; a riser pipe 325 is provided between the bottom tank 310a and the top tank 310b, and a riser pump 326 for pumping the temperature control medium in the bottom tank 310a into the top tank 310b is provided on the riser pipe 325. Of course, in other embodiments, the samming Wen Jinye manifold 310 is connected to the bottom tank 310a, the samming return manifold 315 is connected to the top tank 310b, and the samming return manifold 315 is provided with a return pump 324; a connection pipe is provided between the bottom tank 310a and the top tank 310b, and the temperature control medium in the top tank 310b is transferred into the bottom tank 310a by the connection pipe.

In this embodiment, the top of the energy storage compartment 300 is provided with an exhaust hole 328 and an exhaust fan 329, as shown in fig. 1. Under the condition that the package shell 303 adopts a closed structure, when the temperature-equalizing liquid return main pipe 315 is connected with the carriage-level liquid storage tank 310 positioned at the bottom of the energy storage carriage 300, the top parts of all the temperature-control liquid return branch pipes 316 arranged on the temperature-equalizing liquid return main pipe 315 are provided with exhaust branch pipes 330 extending to the top of the energy storage carriage 300, as shown in fig. 4 and 8; of course, in other embodiments, an exhaust pipe extending to the top of the accumulation chamber 300 may also be provided on the chamber level reservoir 310 located at the bottom of the accumulation chamber 300. When the temperature equalizing return main pipe 315 is connected with the carriage-level liquid storage tank 310 positioned at the top of the energy storage carriage 300, an exhaust port is arranged on the carriage-level liquid storage tank 310 positioned at the top of the energy storage carriage 300. Thus, even if the package housing 303 adopts a closed structure, the air can be discharged timely, so as to control the air pressure in the energy storage compartment 300, the energy storage clusters 301 and the energy storage package 302.

Specifically, there are various ways to install the energy storage bag 302, for example, the energy storage cluster 301 includes a cluster bracket, the bag housing 303 may be fixedly installed on the cluster bracket, and a placement platform for placing the energy storage bag 302 may also be provided on the cluster bracket, so that the energy storage bag 302 is integrally placed on the corresponding placement platform.

The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.

Claims (23)

1. A warm integrative submergence formula energy storage system disappears which characterized in that: the fire control system comprises a temperature control unit, a fire control unit and at least one energy storage compartment, wherein at least one energy storage cluster is arranged in the energy storage compartment, and at least one energy storage bag is arranged in the energy storage cluster;

a temperature equalization pipeline system is arranged in the energy storage compartment, and comprises a compartment level liquid storage tank, a temperature equalization Wen Jinye main pipe and a temperature equalization liquid return main pipe; the equal Wen Jinye main pipe is connected with the carriage-level liquid storage tank; a uniform Wen Jinye branch pipe is arranged on the uniform temperature liquid inlet main pipe; the uniform Wen Jinye branch pipes are arranged in one-to-one correspondence with the energy storage clusters arranged in the same energy storage compartment; the uniform temperature liquid inlet branch pipes are provided with uniform Wen Jinye branch pipes, the uniform Wen Jinye branch pipes are arranged in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster, and the uniform Wen Jinye branch pipes are communicated with the corresponding energy storage bags; the temperature-equalizing liquid return main pipe is provided with temperature-equalizing liquid return branch pipes which are arranged in one-to-one correspondence with the energy storage clusters arranged in the same energy storage compartment; the temperature-equalizing liquid return branch pipes are arranged on the temperature-equalizing liquid return branch pipes and are in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster, and the temperature-equalizing liquid return branch pipes are communicated with the corresponding energy storage bags; a temperature-equalizing liquid inlet pump is arranged on the temperature-equalizing liquid inlet main pipe;

the temperature control unit is provided with a temperature control liquid outlet main pipe and a temperature control liquid return main pipe, the temperature control liquid outlet main pipe is provided with temperature control liquid outlet branch pipes, the temperature control liquid outlet branch pipes are arranged in one-to-one correspondence with the energy storage boxes, and the temperature control liquid outlet branch pipes are connected with the box-level liquid storage boxes arranged in the corresponding energy storage boxes; the temperature-equalizing liquid return main pipe is provided with a first liquid return branch and a second liquid return branch, the first liquid return branch is connected with the corresponding carriage-level liquid storage tank, and the second liquid return branch is connected with the temperature-control liquid return main pipe;

the fire-fighting unit is provided with a fire-fighting liquid inlet main pipe, the fire-fighting liquid inlet main pipe is provided with fire-fighting liquid inlet branch pipes, the fire-fighting liquid inlet branch pipes are arranged in one-to-one correspondence with the energy storage clusters, the fire-fighting liquid inlet branch pipes are provided with fire-fighting liquid inlet branch pipes, and the fire-fighting liquid inlet branch pipes are arranged in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster; the energy storage package includes a package shell, install at least one energy storage monomer in the package shell, fire control feed liquor branch pipe is used for corresponding in the energy storage package in the energy storage monomer take place thermal runaway in the energy storage package pour into or to the energy storage package sprays fire control medium.

2. The temperature-swing immersion energy storage system of claim 1, wherein: the branch pipes Wen Jinye are connected with the bottom of the energy storage bag; and each temperature-equalizing liquid inlet branch pipe is respectively provided with a temperature-equalizing liquid inlet electromagnetic valve for controlling liquid inlet flow.

3. The temperature-swing immersion energy storage system of claim 1, wherein: the temperature equalization liquid return branch pipe is connected with the top of the energy storage bag so as to control the height of the immersed liquid level in the energy storage bag; and each temperature-equalizing liquid return branch pipe is respectively provided with a temperature-equalizing liquid return electromagnetic valve for controlling liquid return flow.

4. The temperature-swing immersion energy storage system of claim 1, wherein: and liquid return control valves for controlling the temperature control medium to flow back to the corresponding carriage level liquid storage tanks or the temperature control unit are respectively arranged on the first liquid return branch and the second liquid return branch.

5. The temperature-swing immersion energy storage system of claim 1, wherein: the bag shell adopts a closed structure; the top of the bag shell is provided with a bag-level explosion-proof valve, and the liquid outlet of the fire-fighting liquid inlet branch pipe is arranged right above the bag-level explosion-proof valve; or, the fire control feed liquor branch pipe is communicated with the inside of the package shell.

6. The temperature-swing immersion energy storage system of claim 5, wherein: the energy storage compartment is provided with a compartment shell capable of storing fire-fighting media, or the energy storage cluster is provided with a cluster shell capable of storing fire-fighting media.

7. The temperature-swing immersion energy storage system of claim 6, wherein: and a overflow liquid return pipe is arranged at the top of the carriage shell or the cluster shell.

8. The temperature-swing immersion energy storage system of claim 7, wherein: the overflow liquid return pipe is connected with the liquid return box.

9. The temperature-swing immersion energy storage system of claim 5, wherein: the fire control feed liquor branch pipe with the inside intercommunication of package shell, energy storage railway carriage or compartment bottom or energy storage cluster bottom are equipped with the liquid return groove, the bottom of liquid return groove is equipped with the bottom liquid return pipe.

10. The temperature-swing immersion energy storage system of claim 9, wherein: the device also comprises a liquid return box, and the bottom liquid return pipe is connected with the liquid return box.

11. The temperature-swing immersion energy storage system of claim 1, wherein: the bag shell adopts an open structure with an open top; the fire control feed liquor branch pipe is located the top of package shell open-ended, be equipped with on the fire control feed liquor branch pipe and be used for to pour into the fire control liquid outlet of fire control medium into in the package shell.

12. The temperature-swing immersion energy storage system of claim 11, wherein: at least one energy storage monomer is arranged in the bag shell, and the fire control liquid outlet corresponds to the energy storage monomers in the energy storage bag in a one-to-one correspondence manner.

13. The temperature-swing immersion energy storage system of claim 12, wherein: the energy storage monomer is provided with a monomer explosion-proof valve on the top surface, and the fire control liquid outlet is arranged right above the corresponding monomer explosion-proof valve.

14. The temperature-swing immersion energy storage system of claim 13, wherein: and the fire control liquid outlet is provided with a fire control sealing film which is flushed when the single explosion-proof valve is opened.

15. The temperature-swing immersion energy storage system of claim 11, wherein: the energy storage compartment is provided with a closed compartment shell, or the energy storage cluster is provided with a closed cluster shell.

16. The temperature-swing immersion energy storage system of claim 15, wherein: and a overflow liquid return pipe is arranged at the top of the carriage shell or the cluster shell.

17. The temperature-swing immersion energy storage system of claim 16, wherein: the overflow liquid return pipe is connected with the liquid return box.

18. The temperature-swing immersion energy storage system of claim 1, wherein: the compartment-level liquid storage tanks are arranged at the bottom or the top of the corresponding energy storage compartment; when the carriage-level liquid storage tanks are arranged at the tops of the corresponding energy storage carriages, the temperature-equalizing liquid return main pipe is provided with a liquid return pump.

19. The temperature-swing immersion energy storage system of claim 1, wherein: the two carriage-level liquid storage tanks are respectively a bottom liquid storage tank and a top liquid storage tank, and the bottom liquid storage tank and the top liquid storage tank are respectively positioned at the top and the bottom of the corresponding energy storage carriage;

the uniform Wen Jinye main pipe is connected with the top liquid storage tank, and the uniform temperature liquid return main pipe is connected with the bottom liquid storage tank; a lifting pipe is arranged between the bottom liquid storage tank and the top liquid storage tank, and a lifting pump for pumping the temperature control medium in the bottom liquid storage tank into the top liquid storage tank is arranged on the lifting pipe; or alternatively, the first and second heat exchangers may be,

the uniform Wen Jinye main pipe is connected with the bottom liquid storage tank, the uniform temperature liquid return main pipe is connected with the top liquid storage tank, and a liquid return pump is arranged on the uniform temperature liquid return main pipe; a connecting pipe is arranged between the bottom liquid storage tank and the top liquid storage tank.

20. The temperature-swing immersion energy storage system of claim 1, wherein: the top of the energy storage compartment is provided with an exhaust hole and an exhaust fan.

21. The temperature-swing immersion energy storage system of claim 20, wherein: when the temperature-equalizing liquid return main pipe is connected with the carriage-level liquid storage tank at the bottom of the energy storage carriage, the top parts of all the temperature-controlling liquid return branch pipes arranged on the temperature-equalizing liquid return main pipe are provided with exhaust branch pipes extending to the top part of the energy storage carriage, or the carriage-level liquid storage tank at the bottom of the energy storage carriage is provided with an exhaust pipe extending to the top part of the energy storage carriage; when the temperature-equalizing liquid return main pipe is connected with the carriage-level liquid storage tank positioned at the top of the energy storage carriage, an exhaust port is arranged on the carriage-level liquid storage tank positioned at the top of the energy storage carriage.

22. The temperature-swing immersion energy storage system of claim 1, wherein: the energy storage cluster comprises a cluster bracket, and the bag shell is fixedly arranged on the cluster bracket; or, a placing platform for placing the energy storage bag is arranged on the cluster support.

23. The temperature-swing immersion energy storage system of claim 1, wherein: the fire-fighting liquid return main pipe is arranged on the liquid return box;

the fire-fighting liquid return main pipe is connected with the temperature-equalizing liquid return main pipe; or alternatively, the first and second heat exchangers may be,

the temperature equalization liquid return branch pipe is provided with a fire-fighting liquid return branch pipe, and the fire-fighting liquid return branch pipe is connected with the fire-fighting liquid return main pipe; or alternatively, the first and second heat exchangers may be,

the fire-fighting liquid return main pipe is connected with fire-fighting liquid return branch pipes which are arranged in one-to-one correspondence with energy storage clusters arranged in the same energy storage compartment; the fire-fighting liquid return branch pipes are connected with fire-fighting liquid return branch pipes, and the fire-fighting liquid return branch pipes are arranged in one-to-one correspondence with the energy storage bags arranged in the same energy storage cluster; and the fire-fighting liquid return branch pipe is connected with the corresponding energy storage bag.