CN215911496U - Energy storage module of energy storage system and energy storage system - Google Patents

Abstract

The utility model discloses an electricity storage module of an energy storage system and the energy storage system, wherein the electricity storage module comprises: the independent shell is of a sealing structure and is provided with an accommodating cavity; the separation plate is arranged in the accommodating cavity to separate the accommodating cavity into a plurality of sub-cavities; the battery pack is multiple and is placed in the multiple sub-cavities in a one-to-one correspondence mode. According to the electricity storage module of the energy storage system, the accommodating cavity is completely isolated from the outside, the situation that the energy storage system cannot work normally due to false fire alarm caused by wind sand entering the accommodating cavity is avoided, the situation that thermal runaway of other electricity storage modules of the energy storage system is induced by thermal runaway of a single electricity storage module is also avoided, or thermal runaway of other battery packs of the electricity storage module is rapidly induced by thermal runaway of a single battery pack is avoided, a large fire caused by fire chain reaction is avoided, fire loss and fire extinguishing difficulty are reduced, a larger space in the accommodating cavity is used for placing the battery pack, and space utilization rate and capacitance are improved.

Description

Energy storage module of energy storage system and energy storage system

Technical Field

The utility model relates to the technical field of energy storage, in particular to an energy storage module of an energy storage system and the energy storage system.

Background

The energy storage system is an essential basic measure for the development of micro-grid, island grid, distributed power generation system and new energy automobile rapid charging technology. The energy storage system is applied to the power system, so that the demand side management, the peak clipping and valley filling, the load smoothing and the power grid frequency quick adjustment are realized, the operation stability and reliability of the power grid are improved, and the impact of a new energy power generation system with large instantaneous changes such as photovoltaic and wind power on the power grid is reduced.

However, in the related art, the energy storage system is generally a container type integral structure, and a battery rack with a battery cluster is arranged in the container to form the energy storage system, so that the battery cluster in the whole container is scrapped after the battery cluster on one of the battery racks is out of control due to heat. And the container and the external world form the circulation of air space, in can not avoiding in wind and sand gets into the container, can initiate smoke detector, lead to reporting false fire alarm, cause the unable normal work of energy storage system, even cause energy storage system automatic fire extinguishing to cause the battery cluster to damage.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the utility model to provide an energy storage module of an energy storage system, which is capable of avoiding false fire alarms and avoiding thermal runaway propagation.

Another object of the present invention is to provide an energy storage system having the above-mentioned energy storage module.

According to the embodiment of the utility model, the electricity storage module of the energy storage system comprises: the independent shell is a sealing structure and is provided with a containing cavity; the separation plate is arranged in the accommodating cavity to separate the accommodating cavity into a plurality of sub-cavities; the battery pack is multiple and is placed in the sub-cavities in a one-to-one correspondence mode.

According to the power storage module of the energy storage system, the sealing structure is formed by the independent shell, the accommodating cavity of the independent shell is divided into the plurality of sub-cavities, the battery pack is arranged in the sub-cavities, the accommodating cavity is completely separated from the outside, the situation that the energy storage system cannot normally work due to false fire alarm caused by wind sand entering the accommodating cavity is avoided, the damage of the battery pack caused by misjudgment starting fire control is also avoided, meanwhile, the situation that the thermal runaway of other power storage modules of the energy storage system is induced by the thermal runaway of a single power storage module or the thermal runaway of other battery packs of the power storage module is rapidly induced by the thermal runaway of a single battery pack is also avoided, the situation that a larger fire disaster is caused by the fire disaster chain reaction is avoided, and the fire loss and the fire extinguishing difficulty are reduced. And the larger space in the accommodating cavity is used for placing the battery pack, so that the space utilization rate and the capacitance are improved.

In addition, the electricity storage module of the energy storage system according to the above embodiment of the utility model may further have the following additional technical features:

according to some embodiments of the utility model, the divider plate comprises a thermally insulating layer.

According to some embodiments of the utility model, the side wall of the separate housing is provided with an insulating structure, wherein the insulating structure is a layer of insulating material or the insulating structure is an insulating cavity.

According to some embodiments of the utility model, the power storage module further comprises: a total electrical connection structure mounted to the independent housing in a manner at least partially disposed outside the independent housing, the battery pack being electrically connected to the total electrical connection structure.

According to some embodiments of the utility model, the battery pack is provided with an electrical connection portion, the electrical connection portion is connected with the overall electrical connection structure through a copper bar, and the copper bar is inserted into the electrical connection portion.

According to some embodiments of the utility model, the power storage module further comprises: the battery pack comprises a battery pack, a liquid cooling main connecting part and a plurality of liquid cooling connecting parts, wherein the liquid cooling main connecting part is arranged outside the independent shell in a mode of being at least partially configured, the battery pack is provided with the liquid cooling connecting part, and the liquid cooling main connecting part and the liquid cooling connecting parts are connected through liquid cooling pipes to cool the electricity storage module.

According to some embodiments of the utility model, the power storage module further comprises: a fire-fighting structure for injecting a fire-fighting medium toward the electric storage module and confined by a receiving cavity formed by the independent enclosure, thereby preventing the fire-fighting medium from diffusing outward of the independent enclosure, wherein the fire-fighting structure includes at least one of a gas fire-fighting structure and a liquid fire-fighting structure.

According to some embodiments of the utility model, the power storage module further comprises: the fire detector, the fire detector with fire control structure signal connection, the fire detector is used for detecting the conflagration condition of electricity storage module.

According to some embodiments of the utility model, the power storage module further comprises: the explosion-proof valve is arranged on the top wall of the independent shell; and the hydrogen detector is used for detecting the hydrogen concentration in the accommodating cavity.

The energy storage system according to the embodiment of the utility model comprises a control module and a plurality of energy storage modules of the energy storage system according to the embodiment of the utility model.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an electrical storage system according to some embodiments of the present invention;

fig. 2 is a schematic structural view of an electricity storage module according to some embodiments of the present invention, in which a battery pack is not shown;

FIG. 3 is a schematic structural view of an electricity storage module according to some embodiments of the present invention;

FIG. 4 is a front view of an electrical storage module according to some embodiments of the utility model;

FIG. 5 is a left side view of an electrical storage module according to some embodiments of the utility model;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a schematic structural diagram of an electricity storage module according to further embodiments of the present invention;

fig. 8 is a front view of an electricity storage module according to some embodiments of the present invention, wherein the battery pack is not shown;

FIG. 9 is an enlarged schematic view of FIG. 8 at circle B;

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 8;

FIG. 11 is an enlarged schematic view of FIG. 10 at circle D;

fig. 12 is a top view of a power storage module according to some embodiments of the utility model;

fig. 13 is a cross-sectional view of a copper bar of an electrical storage module according to some embodiments of the utility model.

Reference numerals:

a power storage module 100; an energy storage system 200; a control module 210;

a separate housing 10; a housing chamber 101; a sub-cavity 102; a housing body 11; a door body 12; a seal 13; an insulating structure 14; a partition plate 15; a mounting bracket 16;

a battery pack 20; an electrical connection portion 21; a liquid-cooled connecting portion 22;

a copper bar 30; a copper bar body 31; a copper bar fireproof layer 32; a copper bar insulating layer 33;

the overall electrical connection structure 40;

a liquid-cooled main connection portion 50; a liquid-cooled tube 51;

a fire-fighting structure 60; a gas fire-fighting structure 61; a liquid fire-fighting structure 62;

a hydrogen gas detector 70; an explosion-proof valve 80.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and "a plurality" means two or more, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or may include the first and second features being not in direct contact but being in contact with another feature therebetween, and the first feature being "on", "above" and "above" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.

In the related technology, a battery frame provided with a battery cluster is arranged in a container to form an energy storage system, and thermal runaway of other batteries or battery modules is easily induced by thermal runaway of monocells or monocell modules, so that chain reaction is caused, great fire loss is caused, the battery cluster in the whole container is scrapped, and fire is seriously difficult to extinguish. And the container and the external world form the circulation of air space, in can not avoiding in wind and sand gets into the container, can initiate smoke detector, lead to reporting false fire alarm, cause the unable normal work of energy storage system, even cause energy storage system automatic fire extinguishing to cause the battery cluster to damage.

Therefore, compared with the prior art in which battery racks are arranged in a container, the energy storage system 200 of the present invention includes a plurality of independent energy storage modules 100, so that the energy storage system 200 can be more flexibly arranged into a suitable shape according to the actual terrain of an installation site and the capacity requirement of a user, and the arrangement is more flexible and changeable, thereby facilitating the handling of different power and capacity requirements of the user.

Through independent shell 10 is sealed, makes electricity storage module 100 form independent, sealed monolithic structure, can effectively avoid external sand blown by the wind to get into independent shell 10 in, avoid conflagration erroneous judgement, avoid the spurious triggering fire control. Moreover, when the battery pack 20 in the power storage module 100 is out of control thermally, the battery packs 20 in other power storage modules 100 can be effectively prevented from being influenced, chain reaction of thermal runaway is prevented from being induced, a large fire is prevented from being caused, and loss reduction is facilitated. And the space of the accommodating cavity 101 in each electricity storage module 100 is much smaller than the space in the container, so that at the initial stage of thermal runaway of the individual battery pack 20, the fire, smoke and CO can be quickly transmitted to the detector of the electricity storage module 100, and the detector is triggered to release a fire alarm signal, thereby realizing early-finding early-fire protection of fire and reducing loss.

The electric storage module 100 and the energy storage system 200 of the energy storage system 200 according to the embodiment of the utility model are described below with reference to the drawings.

As shown in fig. 1, an energy storage system 200 according to an embodiment of the present invention may include a control module 210 and a plurality of energy storage modules 100 of the energy storage system 200 according to an embodiment of the present invention.

In some embodiments, the number of the plurality of power storage modules 100 in the energy storage system 200 may be adjusted according to the required capacity, and the arrangement of the control module 210 and the plurality of power storage modules 100 may be adjusted according to the installation site requirement of the energy storage system 200. For example, the control module 210 and the plurality of power storage modules 100 may be arranged in a "straight" shape, a "cross" shape, a "T" shape, an "L" shape, a polygonal ring shape, or the like.

Referring to fig. 2 to 8, the power storage module 100 of the energy storage system 200 according to an embodiment of the present invention may include: a separate case 10, a partition plate 15, and a battery pack 20.

Specifically, the independent case 10 is a sealed structure, and the battery pack 20 is mounted in the housing chamber 101. And in some embodiments, the independent case 10 includes a case body 11 and a door body 12, wherein the case body 11 has a receiving cavity 101, and the door body 12 is used for opening and closing a cavity opening of the receiving cavity 101 to facilitate installation, replacement and maintenance of the battery pack 20. When the door body 12 closes the opening of the accommodating chamber 101, the door body 12 may seal the opening of the accommodating chamber 101 to achieve sealing of the independent housing 10.

In some embodiments in which the independent case 10 includes the case body 11 and the door body 12, as shown in fig. 8 and 9, the case body 11 and the door body 12 may be sealed by the sealing member 13 such that the independent case 10 forms a sealing structure. Specifically, at least one of the exterior body 11 and the door body 12 may be provided with a sealing member 13, the sealing member 13 surrounding a mouth of the accommodation chamber 101 and sealing a gap between the exterior body 11 and the door body 12.

In some embodiments, as shown in fig. 8 and 9, the end surfaces of the top wall, the bottom wall and the two side walls of the housing body 11 are provided with a sealing groove, the sealing member 13 is disposed in the sealing groove, and when the door body 12 closes the opening of the accommodating cavity 101, the sealing member 13 can abut against the door body 12 to achieve sealing.

The sealing structure of the independent housing 10 can prevent external insects, sand blown by wind and the like from entering the accommodating cavity 101, so that the sand blown by wind can be prevented from causing the electricity storage module 100 to report false fire alarm, causing the energy storage system 200 to work abnormally, or even causing the electricity storage module 100 to fight fire to cause the damage of the electricity storage module 100, the accuracy of fire detection is improved, and the safety and the normal work of the electricity storage module 100 are improved.

And, the electricity storage module 100 can also be controlled the condition of a fire at the conflagration source, and when the group battery 20 in holding chamber 101 took place the thermal runaway, the seal structure of independent shell 10 can be isolated with the intensity of a fire and external world, avoids the condition of a fire of the electricity storage module 100 who takes place the conflagration to stretch to other electricity storage modules 100 of energy storage system 200, avoids appearing the conflagration chain reaction, avoids causing great fire loss, and has reduced the fire control pressure.

In some embodiments, the independent housing 10 may form a sealing grade above IP67, so as to prevent sand wind and the like from entering the accommodating cavity 101, and effectively avoid inducing a fire detector to cause false alarm and false alarm to start fire protection.

According to the energy storage module 100 of the energy storage system 200, the fire spreading is avoided through the sealing structure, and meanwhile, water can be directly injected into the accommodating cavity 101 to achieve fire fighting after the fire happens, the door body 12 does not need to be opened, and the explosion is avoided.

In addition, as shown in fig. 2 to 8, the partition plate 15 is provided in the accommodation chamber 101 to partition the accommodation chamber 101 into the plurality of sub-chambers 102, and the plurality of battery packs 20 are placed in the plurality of sub-chambers 102 in a one-to-one correspondence. For example, the partition plates 15 may be plural and distributed at intervals in the longitudinal direction to divide the accommodation chamber 101 into plural sub-chambers 102 distributed in the longitudinal direction. The division installation of a plurality of battery packs 20 can be realized by providing the division plates 15, the installation is convenient, and the thermal runaway influence between the adjacent battery packs 20 is favorably prevented. Also, most of the space of the accommodating chamber 101 is used for placing the battery pack 20, improving the utilization rate of the accommodating chamber 101 and the capacity of the power storage module 100.

In some embodiments, as shown in fig. 2 and 8, two side walls of the independent housing 10 opposite to each other are respectively provided with a mounting bracket 16, and the partition plate 15 may be connected with the mounting bracket 16, for example, by fastening members or the like, so as to fix the partition plate 15. In the embodiment that the partition plate 15 is connected with the mounting bracket 16 through a fastener, the partition plate 15 is detachable, so that the space size of each sub-cavity 102 in the independent housing 10 is adjustable, the independent housing 10 can meet the mounting requirements of the battery packs 20 with different specifications in the production process, and the product universality is improved.

In some embodiments, as shown in fig. 8 and 9, the divider 15 is provided on the underside of the mounting bracket 16 to facilitate assembly.

In some embodiments, the divider plate 15 comprises an insulating layer. In some embodiments, the divider panel 15 is a thermal insulation panel, such as a mica thermal insulation panel, which is integrally formed as a thermal insulation layer. When one of the battery packs 20 is out of control due to heat, the partition plate 15 can prevent high-temperature heat and flame generated by the battery pack 20 from being directly transmitted to other normal battery packs 20, thereby avoiding the thermal runaway chain reaction and ensuring the safety of other battery packs 20.

According to the power storage module 100 of the energy storage system 200 provided by the embodiment of the utility model, a sealing structure is formed by the independent shell 10, the accommodating cavity 101 of the independent shell 10 is divided into the plurality of sub-cavities 102, the battery pack 20 is installed in the sub-cavities 102, so that the accommodating cavity 101 is completely separated from the outside, the situation that false fire alarm is reported to cause the energy storage system 200 to fail to work normally due to wind and sand entering the accommodating cavity 101 is avoided, the situation that the battery pack 20 is damaged due to misjudgment starting fire protection is also avoided, meanwhile, the situation that thermal runaway of other power storage modules 100 of the energy storage system 200 is induced by single power storage module 100 or thermal runaway of other battery packs 20 of the power storage module 100 is rapidly induced by single battery pack 20 is also avoided, a larger fire caused by fire chain reaction is avoided, and the fire loss and the fire extinguishing difficulty are reduced. And a larger space in the receiving cavity 101 is used for placing the battery pack 20, improving space utilization and electric capacity.

Because the power storage module 100 of the energy storage system 200 according to the embodiment of the present invention has the above beneficial technical effects, according to the energy storage system 200 according to the embodiment of the present invention, a sealing structure is formed by the independent housing 10, the accommodating chamber 101 of the independent housing 10 is divided into the plurality of sub-chambers 102, the battery pack 20 is installed in the sub-chambers 102, so that the accommodating chamber 101 is completely isolated from the outside, thereby preventing wind and sand from entering the accommodating chamber 101 to cause false fire alarm and cause the energy storage system 200 to fail to work normally, and also preventing the battery pack 20 from being damaged due to misjudgment and fire start, and simultaneously preventing the thermal runaway of the single power storage module 100 from inducing the thermal runaway of other power storage modules 100 of the energy storage system 200, or preventing the thermal runaway of the other battery packs 20 of the power storage module 100 from rapidly inducing the thermal runaway of the single battery pack 20, thereby preventing occurrence of a larger fire caused by fire chain reaction and reducing the fire loss and fire extinguishing difficulty. And a larger space in the receiving cavity 101 is used for placing the battery pack 20, improving space utilization and electric capacity.

According to some embodiments of the present invention, as shown in fig. 10 and 11, the side wall of the independent case 10 is provided with the heat insulating structure 14, in other words, at least one of the side wall of the case body 11 and the door body 12 is provided with the heat insulating structure 14. The heat insulation structure 14 can play a role in separating heat, and when thermal runaway occurs in the battery pack 20 in the electricity storage module 100, the isolation cavity can prevent the heat from diffusing to the adjacent electricity storage module 100, so that thermal runaway of other electricity storage modules 100 and even the whole energy storage system 200 is avoided.

The specific form of the heat insulation structure 14 can be flexibly set according to actual conditions.

For example, in some embodiments, the insulating structure may be an insulating cavity. The insulating cavity may be at least one (one or more). In the embodiment where the isolated cavity is plural, the plural isolated cavities may be arranged in the thickness direction of the side wall of the independent housing 10. Therefore, a multi-stage partition effect is formed, and the effect of preventing heat diffusion is improved.

For example, in the embodiment shown in fig. 10 and 11, the side wall of the housing body 11 is formed by extrusion molding or roll forming of aluminum alloy, and includes a partition wall and two outer walls, which are symmetrically disposed and spaced apart with respect to the partition wall, so that two symmetrically disposed partition cavities are formed between the two outer walls and the partition wall, respectively.

It should be noted that the location where the isolation cavity is provided may be set according to the arrangement manner of the plurality of electric storage modules 100 in the energy storage system 200. For example, in an embodiment in which the plurality of electricity storage modules 100 are arranged in a line shape along a set direction (e.g., the left-right direction shown in fig. 1), two side walls of the housing body 11 opposite to each other along the set direction may be respectively provided with an isolation chamber, and the door body 12 and the side walls of the housing body 11 opposite to the door body 12 may not need to be provided with an isolation chamber to meet the protection requirement and reduce the difficulty of the processing process.

As another example, the insulating structure 14 may be a layer of insulating material (e.g., a layer of insulating material disposed within an insulating cavity). The thermal insulation material layer can further improve the effect of preventing the heat from being diffused while preventing the independent housing 10 from being collapsed due to the high-temperature softening.

According to some embodiments of the present invention, as shown in fig. 2 to 7, the power storage module 100 further includes: and an overall electrical connection structure 40, the overall electrical connection structure 40 being mounted to the separate case 10 in a manner at least partially disposed outside the separate case 10, the battery pack 20 being electrically connected to the overall electrical connection structure 40. So that a plurality of electricity storage modules 100 are connected in series or in parallel through the total electrical connection structure 40, the electricity storage modules 100 can be electrically connected with the control module 210 through the total electrical connection structure 40, and a plurality of battery packs 20 in the electricity storage modules 100 do not need to be separately connected with the control module 210 or other electricity storage modules 100, thereby simplifying the electrical connection structure and facilitating the design of different arrangement modes and different quantities of the electricity storage modules 100 in the energy storage system 200.

In some embodiments, as shown in fig. 3 and 4, the battery pack 20 is provided with an electrical connection portion 21, and the electrical connection portion 21 is connected with the overall electrical connection structure 40 through the copper bar 30, so as to realize series connection of a plurality of battery packs 20 or parallel connection and confluence to the overall electrical connection structure 40 as shown in fig. 3 and 4, so as to meet the electrical parameter requirement of the electrical storage module 100. The wiring in the electricity storage module 100 is simple and orderly in the manner of connecting through the copper bars 30, and short circuit is not easy to occur.

In some embodiments, as shown in fig. 3 and 4, the copper bar 30 is inserted into the electrical connection portion 21, which is beneficial to realize the quick assembly and disassembly of the copper bar 30, and improves the assembly efficiency.

In some embodiments, as shown in fig. 4 and 13, the copper bar 30 may include a copper bar body 31, a copper bar fireproof layer 32 and a copper bar insulating layer 33. Copper bar body 31 is located to the copper bar flame retardant coating 32 cover, and copper bar insulating layer 33 cover is located copper bar flame retardant coating 32, in other words, copper bar flame retardant coating 32 locates between copper bar body 31 and the copper bar insulating layer 33.

In some embodiments, the copper bar fire-proof layer 32 may be made of non-combustible materials such as mica tape, heat pressed mica board, etc. The mica tape can be fixed on the copper bar body 31 in a winding mode and the like, and the hot-pressed mica plate can be assembled on the copper bar body 31 through a nesting process. In some embodiments, the copper bar insulation layer 33 may be made of plastic with a fire-retardant rating of UL-V0. The copper bar insulating layer 33 can be fixed outside the copper bar fireproof layer 32 through a heat shrinkage process.

The copper bar insulating layer 33 may have a preliminary fire prevention effect when the battery pack 20 is in a thermal runaway fire. And the higher flame temperature leads to the copper bar insulating layer 33 to be ablated and destroyed, and the copper bar body 31 is softened and collapsed to a certain extent due to high temperature. And copper bar flame retardant coating 32 is incombustible, can guarantee the insulating nature of copper bar body 31, avoids copper bar body 31 and independent shell 10, module metallic structure spare support overlap joint short circuit, avoids causing between the battery, between group battery 20, takes place the short circuit between the electricity storage module 100, avoids causing the secondary and a lot of explosion to catch fire, has guaranteed energy storage system 200's security.

According to some embodiments of the utility model, as shown in fig. 7, the power storage module 100 further comprises a liquid-cooled main connection 50, the liquid-cooled main connection 50 being mounted to the separate housing 10 in such a way as to be at least partially arranged outside the separate housing 10 and being used for cooling the power storage module 100. With make electricity storage module 100 can be through the liquid cooling unit (for example locate the liquid cooling unit in control module 210) outside liquid cooling total connecting portion 50 and independent shell 10, make the liquid cooling unit can cool off a plurality of group battery 20 in independent shell 10 through liquid cooling total connecting portion 50, and need not to set up the liquid cooling unit in every electricity storage module 100, space utilization in independent shell 10 has been improved, and the cooling method of liquid cooling need not to hold chamber 101 and external intercommunication, has guaranteed independent shell 10's leakproofness.

Further, as shown in fig. 7, the battery pack 20 has the liquid-cooling connection portion 22, and the power storage module 100 further includes a liquid-cooling pipe 51, wherein the liquid-cooling pipe 51 connects the liquid-cooling main connection portion 50 and the plurality of liquid-cooling connection portions 22 (for example, in parallel) to achieve cooling of the plurality of battery packs 20 through the liquid-cooling pipe 51, so as to improve uniformity and cooling efficiency of cooling.

According to some embodiments of the present invention, as shown in fig. 2-8, 10 and 12, the electric storage module 100 further includes a fire fighting structure 60, the fire fighting structure 60 is used to spray a fire fighting medium toward the electric storage module 100, and the fire fighting medium is confined by the receiving cavity 101 formed by the separate housing 10, thereby preventing the fire fighting medium from spreading out toward the separate housing 10. From this, can concentrate, pertinence fire control to the power storage module 100 of thermal runaway, improve fire extinguishing efficiency, avoid thermal runaway to stretch.

In some embodiments, as shown in fig. 2-8, 10, and 12, the fire fighting structure 60 includes at least one of a gaseous fire fighting structure 61 and a liquid fire fighting structure 62. Wherein, liquid fire-fighting structure 62 can be used for to holding chamber 101 inside injection liquid fire-fighting medium, and gaseous fire-fighting structure 61 can be to holding chamber 101 inside injection gaseous fire-fighting medium. In embodiments where two different fire fighting structures 60 are provided, the power storage module 100 is enabled to classify fire classes for targeted, efficient fire fighting. For example, gas fire protection may be performed when the fire classification is small fire, and liquid fire protection may be performed when the fire classification is large fire.

In some embodiments, the power storage module 100 may further include a fire detector in signal connection with the fire fighting structure 60, the fire detector being configured to detect a fire condition of the power storage module 100 and classify a fire class for targeted and efficient fire fighting. For example, gas fire protection may be performed when the fire classification is small fire, and liquid fire protection may be performed when the fire classification is large fire.

In some embodiments, the fire detector may include at least one of a smoke sensor, a CO sensor, a battery temperature sensor, an electrolyte vapor concentration detector, and the like. In the embodiment including the battery temperature sensor and the electrolyte vapor concentration detector, it is possible to realize a fire early warning to predict the operation abnormality of the battery pack 20 when a fire has not occurred. In the embodiment comprising a plurality of detectors, the fire condition can be comprehensively judged, and the risk of misjudgment of the fire is reduced.

According to some embodiments of the present invention, as shown in fig. 2 to 7, the electricity storage module 100 may further include a hydrogen gas detector 70 for detecting a hydrogen gas concentration in the accommodating chamber 101 to determine whether the door 12 of the independent enclosure 10 can be opened or not according to the hydrogen gas concentration in the accommodating chamber 101, and whether the door is open or not to cause a risk of secondary explosion. Accordingly, when the hydrogen concentration is low, there is no risk of secondary explosion, and a firefighter can open the door body 12 to perform operations such as maintenance and replacement on the battery pack 20 without pouring water into the battery pack 20 in the entire electricity storage module 100 to scrap; when hydrogen concentration increases, have the risk of secondary explosion, the fire fighter can fill water to holding chamber 101 through fire control structure 60 and thoroughly fight fire, and need not to open door 12, has guaranteed the security of fire control.

In some embodiments of the utility model, as shown in fig. 2-8, the top wall of the separate housing 10 may also be provided with an explosion-proof valve 80. When the thermal runaway takes place in electricity storage module 100 inside, the atmospheric pressure that holds in the chamber 101 risees sharply, and when reaching explosion-proof valve 80's burst pressure, explosion can take place for explosion-proof valve 80, release heat and pressure to avoid electricity storage module 100 to take place the explosion because of internal pressure is too high, avoid the casualties, improved the security.

Other constructions and operations of the power storage module 100 and the energy storage system 200 according to embodiments of the utility model are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electricity storage module of an energy storage system, comprising:

the independent shell is a sealing structure and is provided with a containing cavity;

the separation plate is arranged in the accommodating cavity to separate the accommodating cavity into a plurality of sub-cavities;

the battery pack is multiple and is placed in the sub-cavities in a one-to-one correspondence mode.

2. The electrical storage module of the energy storage system of claim 1, wherein the separator plate comprises a thermally insulating layer.

3. The power storage module of the energy storage system according to claim 1, wherein a side wall of the independent housing is provided with an insulating structure, wherein,

the heat insulation structure is a heat insulation material layer, or the heat insulation structure is a heat insulation cavity.

4. The power storage module of the energy storage system according to claim 1, further comprising:

a total electrical connection structure mounted to the independent housing in a manner at least partially disposed outside the independent housing, the battery pack being electrically connected to the total electrical connection structure.

5. The power storage module of the energy storage system according to claim 4, wherein the battery pack is provided with an electrical connection portion, the electrical connection portion is connected with the overall electrical connection structure through a copper bar, and the copper bar is plugged with the electrical connection portion.

6. The power storage module of the energy storage system according to claim 1, further comprising:

the battery pack comprises a battery pack, a liquid cooling main connecting part and a plurality of liquid cooling connecting parts, wherein the liquid cooling main connecting part is arranged outside the independent shell in a mode of being at least partially configured, the battery pack is provided with the liquid cooling connecting part, and the liquid cooling main connecting part and the liquid cooling connecting parts are connected through liquid cooling pipes to cool the electricity storage module.

7. The power storage module of the energy storage system according to claim 1, further comprising:

a fire fighting structure for spraying a fire fighting medium toward the electric storage module and the fire fighting medium being confined by a receiving cavity formed by the independent housing so as to prevent the fire fighting medium from spreading out of the independent housing, wherein,

the fire-fighting structure includes at least one of a gas fire-fighting structure and a liquid fire-fighting structure.

8. The power storage module of the energy storage system according to claim 7, further comprising:

the fire detector, the fire detector with fire control structure signal connection, the fire detector is used for detecting the conflagration condition of electricity storage module.

9. The power storage module of the energy storage system according to claim 1, further comprising:

the explosion-proof valve is arranged on the top wall of the independent shell;

and the hydrogen detector is used for detecting the hydrogen concentration in the accommodating cavity.

10. An energy storage system, characterized by comprising a control module and a plurality of energy storage modules of the energy storage system according to any one of claims 1-9.

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