CN215911495U - 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 battery pack is arranged in the accommodating cavity; and the leading-out structure is arranged on the independent shell in a mode of being at least partially arranged outside the independent shell, and the leading-out structure is in sealing fit with the independent shell. According to the embodiment of the utility model, the accommodating cavity of the electricity storage module of the energy storage system is completely isolated from the outside, so that 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 fighting is also avoided, meanwhile, the situation that the thermal runaway of other electricity storage modules of the energy storage system is induced by the thermal runaway of a single electricity storage module is avoided, a larger fire caused by fire chain reaction is avoided, the fire loss and the fire extinguishing difficulty are reduced, and the electricity storage module can interact with other module units of the energy storage system through the leading-out structure, so that the flexible design of the energy storage system is facilitated.

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.

In the related art, the container and the outside form an air circulation space, so that wind and sand inevitably enter the container, a smoke detector can be triggered, false fire alarm is reported, the energy storage system cannot work normally, and even the energy storage system is triggered to extinguish fire automatically to cause damage to a battery cluster. And the energy storage system is generally a container type integral structure, the battery racks provided with the battery clusters are arranged in the container to form the energy storage system, and the battery clusters in the whole container can be scrapped after the battery clusters on one of the battery racks are out of control due to heat.

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 propose an electricity storage module of an energy storage system which effectively reduces the risk of false fire alarms and 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 battery pack is arranged in the accommodating cavity; at least one exit structure mounted to the self-contained housing at least partially disposed outside the self-contained housing, the exit structure sealingly engaging the self-contained housing.

According to the electricity storage module of the energy storage system, the seal structure is formed by the independent shell, the lead-out structure is connected with the independent shell in a sealing mode, the accommodating cavity in the independent shell 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, damage to the battery pack caused by misjudgment starting fire fighting is avoided, meanwhile, 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 avoided, the situation that a large fire disaster is caused by fire chain reaction is avoided, fire loss and fire extinguishing difficulty are reduced, the electricity storage module can interact with other module units of the energy storage system through the lead-out structure, and flexible design of the energy storage system is facilitated.

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 top of the independent housing is provided with a first mounting hole, the lead-out structure comprises a total electrical connection structure, and the total electrical connection structure comprises: the electric connection body penetrates through the first mounting hole; the installation fixing part is arranged on the outer peripheral surface of the electric connection body and connected with the top wall of the independent shell, and a first sealing element is arranged between the installation fixing part and the top wall of the independent shell.

According to some embodiments of the utility model, the top of the independent housing is provided with a second mounting hole, and the leading-out structure comprises a fire-fighting connection part which is arranged through the second mounting hole and sealed with the top wall of the independent housing through a second sealing member.

According to some embodiments of the utility model, the fire fighting connection comprises: the first joint is provided with a first channel, and the peripheral surface of the first joint is provided with a first limiting part; the second joint is provided with a second channel, a second limiting part is arranged on the outer peripheral surface of the second joint, one of the first joint and the second joint penetrates through the second mounting hole to be connected with the other one of the first joint and the second joint, the first channel is communicated with the second channel, the first limiting part and the second limiting part are clamped on two sides of the top wall of the independent shell, and the second sealing element is arranged between the first limiting part or the second limiting part and the top wall of the independent shell.

According to some embodiments of the present invention, a third mounting hole is formed in the top of the independent housing, and the lead-out structure includes a main liquid-cooling connection portion, which is inserted into the third mounting hole and sealed with the top wall of the independent housing by a third sealing member.

According to some embodiments of the utility model, the liquid cooling mains connection comprises: the liquid cooling connector body penetrates through the third mounting hole; the joint fixing part is arranged on the outer peripheral surface of the liquid cooling joint body and connected with the top wall of the independent shell, and the third sealing element is arranged between the joint fixing part and the top wall of the independent shell.

According to some embodiments of the utility model, the top of the independent housing is provided with a fourth mounting hole, and the leading-out structure comprises an explosion-proof valve which is arranged in the fourth mounting hole in a penetrating mode and sealed with the top wall of the independent housing through a fourth sealing piece.

According to some embodiments of the utility model, the explosion-proof valve comprises: the valve body penetrates through the fourth mounting hole, and a valve convex part is arranged on the outer peripheral surface of the valve body; the valve fastening portion is connected with the valve body, the valve fastening portion and the valve convex portion are clamped on two sides of the top wall of the independent shell, and the fourth sealing piece is arranged between the valve convex portion and the top wall of the independent shell.

According to some embodiments of the utility model, the independent housing comprises: a housing body having the receiving cavity; the door body is used for opening and closing the cavity opening of the accommodating cavity, wherein at least one of the shell body and the door body is provided with a fifth sealing piece, and the fifth sealing piece surrounds the cavity opening of the accommodating cavity and is used for sealing a gap between the shell body and the door body.

An energy storage system according to an embodiment of the utility model includes a plurality of energy storage modules according to an 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 view of an electricity storage module according to an embodiment of the utility model, in which a battery pack is not shown;

fig. 2 is a plan view of a power storage module according to an embodiment of the utility model;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a front view of an electric storage module according to an embodiment of the utility model;

FIG. 5 is an enlarged schematic view of FIG. 4 at circle B;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 7 is an enlarged schematic view of FIG. 3 at circle D;

FIG. 8 is an enlarged schematic view of FIG. 3 at circle E;

FIG. 9 is a schematic structural diagram of an overall electrical connection structure according to an embodiment of the present invention;

FIG. 10 is a bottom view of an overall electrical connection structure according to an embodiment of the utility model;

FIG. 11 is a cross-sectional view taken along line F-F of FIG. 10;

FIG. 12 is an enlarged schematic view of FIG. 3 at circle G;

FIG. 13 is a schematic diagram of a liquid fire fighting attachment according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of a liquid fire fighting attachment according to an embodiment of the present invention;

FIG. 15 is a sectional view taken along line H-H of FIG. 14;

FIG. 16 is a cross-sectional view taken along line J-J of FIG. 4;

FIG. 17 is an enlarged schematic view of FIG. 16 at circle K;

FIG. 18 is a schematic diagram of a gas fire-fighting connection according to an embodiment of the utility model;

FIG. 19 is a schematic diagram of a gas fire fighting attachment according to an embodiment of the present invention;

FIG. 20 is a cross-sectional view taken along line L-L of FIG. 14;

FIG. 21 is a cross-sectional view taken along line M-M of FIG. 4;

FIG. 22 is an enlarged schematic view of FIG. 21 at circle N;

FIG. 23 is a schematic diagram of a liquid cooling manifold according to an embodiment of the present invention;

FIG. 24 is a top view of a liquid cooling manifold according to an embodiment of the present invention;

FIG. 25 is a front view of a liquid cooled aggregate connection according to an embodiment of the utility model;

FIG. 26 is a cross-sectional view taken along line P-P of FIG. 25;

fig. 27 is a schematic structural diagram of an energy storage system according to an embodiment 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 body 11; a housing cavity 111; a door body 12;

a partition plate 20;

a lead-out structure 30;

the overall electrical connection structure 40; an electrical connection body 41; the mounting fixing portion 42;

a fire connection 50; a first joint 51; a first channel 511; a first position-limiting portion 512; a second joint 52; a second channel 521; a second stopper 522; a liquid fire connection 53; a gas fire-fighting connection 54;

a liquid cooling main connection portion 60; a liquid inlet passage 61; a liquid outlet channel 62; a liquid-cooled joint body 63; a joint fixing portion 64;

an explosion-proof valve 70; a valve body 71; a valve boss 72; a valve fastening portion 73;

the first mounting hole 81; a second mounting hole 82; a third mounting hole 83; a fourth mounting hole 84;

a first seal 91; a second seal 92; a third seal 93; a fourth seal 94; a fifth seal 95.

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.

Accordingly, the present invention proposes an electrical storage module 100 of an energy storage system 200. Compared with the prior art in which battery racks are arranged in the container, the energy storage system 200 comprises a plurality of independent energy storage modules 100, so that the energy storage system 200 can be more flexibly arranged into a proper shape according to the actual terrain condition of an installation site and the capacity requirement of a user, the arrangement is more flexible and changeable, and different power and capacity requirements of the user can be met conveniently. The plurality of power storage modules 100 and the functions of electrical connection, signal transmission, cooling cooperation, fire-fighting cooperation, and the like between the power storage modules 100 and the control module 210 are realized by the lead-out structure 30 being at least partially disposed outside the independent housing 10.

Through the sealing fit of the leading-out structure 30 and the independent shell 10 and the independent and sealing structure formed by the plurality of electricity storage modules 100, external sand blown into the independent shell 10 can be effectively avoided, fire misjudgment is avoided, and mistriggering fire fighting is avoided. Moreover, when the battery pack in the power storage module 100 is out of control due to thermal runaway, the battery packs in other power storage modules 100 can be effectively prevented from being influenced, chain reaction due to thermal runaway is prevented from being induced, a large fire is prevented from being caused, and loss is reduced. And the space of the accommodating cavity 111 in each electricity storage module 100 is much smaller than the space of the container inner chamber, so that when thermal runaway occurs in the initial stage of individual battery packs, fire, smoke and CO can be quickly transmitted to the detector of the electricity storage module 100, the detector is triggered to release a fire alarm signal, early fire fighting of early occurrence of fire is realized, and loss is reduced.

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. 27, the energy storage system 200 according to an embodiment of the present invention may include a plurality of the energy storage modules 100 of the energy storage system 200 according to an embodiment of the present invention.

By arranging the plurality of independent electricity storage modules 100, compared with the size of a container in the related art, the size of the electricity storage module 100 in the embodiment of the utility model is smaller, so that the plurality of electricity storage modules 100 can be assembled more flexibly according to the requirements of actual places, capacitance and the like, namely, the shape and the capacitance of the energy storage system 200 formed by the plurality of electricity storage modules 100 can be flexibly adjusted, the changeable requirements of different customers and different installation places are met, the platform of the electricity storage module 100 is realized, the electricity storage modules 100 can be designed without redeveloping aiming at different customers and different installation places, only the number and the arrangement mode of the electricity storage modules 100 are needed to be adjusted, the workload is reduced, and the design efficiency of the energy storage system 200 is improved.

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 manner of 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 plurality of power storage modules 100 may be arranged in a line shape, a cross shape, a T shape, an L shape, a polygonal ring shape, or the like.

Referring to fig. 1 to 4, the power storage module 100 of the energy storage system 200 according to an embodiment of the present invention may include: a separate housing 10, a battery pack and at least one lead-out structure 30.

Specifically, the independent case 10 is a sealed structure and has a receiving cavity 111, and the battery pack is mounted in the receiving cavity 111. In some embodiments, the independent housing 10 includes a housing body 11 and a door body 12, wherein the housing body 11 has a receiving cavity 111, and the door body 12 is used for opening and closing a cavity opening of the receiving cavity 111 to facilitate installation, replacement and maintenance of the battery pack. When the door body 12 closes the opening of the accommodating cavity 111, the door body 12 may seal the opening of the accommodating cavity 111 to achieve sealing of the independent housing 10.

In the embodiment in which the independent case 10 includes the case body 11 and the door body 12, as shown in fig. 4 and 5, the case body 11 and the door body 12 may be sealed by a fifth sealing member 95 such that the independent case 10 forms a sealing structure. Specifically, at least one of the case body 11 and the door body 12 may be provided with a fifth seal 95, the fifth seal 95 surrounding the opening of the receiving cavity 111 and for sealing a gap between the case body 11 and the door body 12.

In some embodiments, as shown in fig. 4 and 5, 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 fifth sealing member 95 is disposed in the sealing groove, and when the door body 12 closes the opening of the accommodating cavity 111, the fifth sealing member 95 may 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 111, thereby preventing the sand blown by wind from causing the electricity storage module 100 to report false fire alarm, causing the energy storage system 200 to work abnormally, and even causing the electricity storage module 100 to fight fire and causing the damage of the electricity storage module 100, improving the accuracy of fire detection, and improving the safety and normal work of the electricity storage module 100.

And, electricity storage module 100 can also be controlled the condition of a fire at the conflagration source, and when the group battery that holds in chamber 111 takes place the thermal runaway, independent shell 10's seal structure can be isolated with the intensity of a fire and external world, avoids the condition of a fire of 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 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 111, 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 is prevented from spreading through the sealing structure, and meanwhile, water can be directly injected into the accommodating cavity 111 to achieve fire fighting after the fire happens, the door body 12 does not need to be opened, and explosion is avoided.

Further, as shown in fig. 1 to 4, the electric storage module 100 further includes at least one lead-out structure 30, the lead-out structure 30 is mounted to the separate housing 10 in such a manner as to be at least partially disposed outside the separate housing 10, and the lead-out structure 30 is sealingly fitted with the separate housing 10. So that a plurality of electricity storage modules 100 or electricity storage modules 100 and control module 210 can interact through leading-out structure 30, so that whole energy storage system 200 reliably, steady operation, and the leakproofness of independent shell 10 can not be influenced in the setting of leading-out structure 30, has guaranteed thermal runaway prevention and fire alarm prevention effect.

The lead-out structure 30 is to be understood in a broad sense, that is, the lead-out structure 30 refers to a structure capable of realizing interaction between the inside and the outside of the power storage module 100, for example, the lead-out structure 30 may include a main electrical connection structure 40, a fire protection connection portion 50, a liquid cooling main connection portion 60, an explosion-proof valve 70, and the like.

According to the electricity storage module 100 of the energy storage system 200, the independent shell 10 forms a sealing structure, the leading-out structure 30 is in sealing connection with the independent shell 10, the accommodating cavity 111 in the independent shell 10 is completely isolated from the outside, false fire alarm caused by wind and sand entering the accommodating cavity 111 is avoided, the energy storage system 200 cannot work normally, damage of a battery pack caused by misjudgment starting fire protection is avoided, meanwhile, thermal runaway of other electricity storage modules 100 of the energy storage system 200 caused by thermal runaway of a single electricity storage module 100 can be avoided, a large fire caused by fire chain reaction is avoided, fire loss and fire extinguishing difficulty are reduced, the electricity storage module 100 can interact with other module units of the energy storage system 200 through the leading-out structure 30, and flexible design of the energy storage system 200 is facilitated.

Since the power storage module 100 of the energy storage system 200 according to the embodiment of the present invention has the above-described advantageous technical effects, therefore, according to the energy storage system 200 of the embodiment of the utility model, the independent housing 10 forms a sealing structure, and the lead-out structure 30 is hermetically connected with the independent housing 10, so that the accommodating cavity 111 in the independent housing 10 is completely isolated from the outside, thereby preventing wind and sand from entering the accommodating cavity 111 to cause false fire alarm to cause the energy storage system 200 not to work normally, and preventing the battery pack from being damaged due to misjudgment and fire protection, meanwhile, the thermal runaway of other power storage modules 100 of the energy storage system 200 caused by the thermal runaway of a single power storage module 100 can be avoided, a larger fire caused by the fire chain reaction can be avoided, the fire loss and the fire extinguishing difficulty can be reduced, and the electricity storage module 100 can interact with other module units of the energy storage system 200 through the lead-out structure 30, which facilitates flexible design of the energy storage system 200.

According to some embodiments of the present invention, the top of the independent housing 10 may be provided with a mounting hole, the lead-out structure 30 may be inserted into the mounting hole, and the lead-out structure 30 and the independent housing 10 are sealed by a sealing member, so as to ensure the reliable installation of the lead-out structure 30 and ensure the sealing stability of the independent housing 10.

In some embodiments, as shown in fig. 1-3 and 6-7, the top of the independent housing 10 is provided with a fourth mounting hole 84, the lead-out structure 30 includes an explosion-proof valve 70, the explosion-proof valve 70 is arranged through the fourth mounting hole 84, and the explosion-proof valve 70 is sealed with the top wall of the independent housing 10 by a fourth sealing member 94. The sealing performance inside the electricity storage module 100 is guaranteed, when thermal runaway occurs inside the electricity storage module 100, air pressure inside the electricity storage module 100 rises sharply, when the explosion pressure of the explosion-proof valve 70 is reached, the explosion of the explosion-proof valve 70 can occur, heat and pressure are released, and therefore the explosion of the electricity storage module 100 due to overhigh internal pressure is avoided, casualties are avoided, and safety is improved.

Further, with continued reference to fig. 6 and 7, the explosion-proof valve 70 includes: a valve body 71 and a valve fastening portion 73. The valve body 71 is inserted into the fourth mounting hole 84, and the valve protrusion 72 is provided on the outer circumferential surface of the valve body 71. The valve fastening portion 73 is connected to the valve body 71, so that the valve fastening portion 73 and the valve protrusion 72 can be clamped on both sides of the top wall of the independent housing 10, thereby realizing reliable limit of the explosion-proof valve 70 on the independent housing 10. The fourth sealing member 94 may be disposed between the valve protrusion 72 and the top wall of the independent housing 10, and the fourth mounting member is not easily displaced or displaced when the valve fastening portion 73 is attached or detached, thereby ensuring the sealing effectiveness. In some embodiments, the valve fastening portion 73 may be located within the receiving cavity 111, and the valve fastening portion 73 and the valve body 71 may be snapped or screwed.

In some embodiments, as shown in fig. 1 to 3 and 8 to 11, the top of the independent housing 10 is provided with a first mounting hole 81, the lead-out structure 30 includes a total electrical connection structure 40, and the total electrical connection structure 40 includes an electrical connection body 41 and a mounting fixing portion 42. The electrical connection body 41 is inserted into the first mounting hole 81, so that the electrical connection body 41 can be electrically connected to the battery pack in the independent housing 10 and a structure outside the independent housing 10, for example, electrically connected to the electrical connection body 41 of another power storage module 100, or electrically connected to the control module 210, so that the control module 210 can control the power storage module 100.

Further, the mounting fixing portion 42 is provided on the outer peripheral surface of the electrical connection body 41, and the mounting fixing portion 42 is connected to the top wall of the separate housing 10, for example, by a fastener, to achieve fixing of the overall electrical connection structure 40. A first sealing member 91 may be provided between the mounting fixture 42 and the top wall of the separate case 10 to seal the first mounting hole 81.

In some embodiments, as shown in fig. 8-11, the fixing portion 42 is a plate-shaped structure, and the first sealing member 91 is a sheet-shaped structure, so as to achieve a larger sealing contact area, and achieve a better sealing effect and insulation protection effect.

In some embodiments, as shown in fig. 1 to 3 and 8 to 11, the total electrical connection structures 40 may be three, which are a high-voltage total positive connection structure, a high-voltage total negative connection structure, and a low-voltage total connection structure, and the corresponding first mounting holes 81 and the first sealing members 91 are all three, so as to be disposed in one-to-one correspondence with the three total electrical connection structures 40, so as to achieve strong and weak electrical separation and positive and negative electrode separation, and avoid electromagnetic interference and short circuit.

In some embodiments, as shown in fig. 1-3 and 12-20, the top of the independent housing 10 is provided with a second mounting hole 82, the exit structure 30 includes a fire fighting connection 50, and the fire fighting connection 50 is inserted through the second mounting hole 82 and sealed with the top wall of the independent housing 10 by a second seal 92. The fire fighting connection 50 may be connected with a fire fighting structure in the separate case 10, or a portion of the fire fighting connection 50 located in the receiving chamber 111 is formed as a spray head for spraying a fire fighting medium; the portion of the fire-fighting connection 50 outside the separate case 10 may be used to connect with a structure outside the separate case 10, such as with the fire-fighting connection 50 of another power storage module 100 through a fire-fighting pipeline, or with a fire-fighting tank (such as an air tank or a liquid tank), or directly with a faucet, a fire truck joint, or the like, to provide fire-fighting medium into the separate case 10 through the fire-fighting connection 50.

Further, with continued reference to fig. 12-20, fire fighting attachment 50 includes: a first connector 51 and a second connector 52. The first joint 51 has a first passage 511 and a first position-limiting portion 512 on the outer peripheral surface thereof, and the second joint 52 has a second passage 521 and a second position-limiting portion 522 on the outer peripheral surface thereof. One of the first and second joints 51 and 52 is inserted into the second mounting hole 82 to be connected to the other of the first and second joints 51 and 52, while the first passage 511 is communicated with the second passage 521 to form a delivery passage for delivering the fire-fighting medium. The first and second position-limiting portions 512 and 522 are clamped on two sides of the top wall of the independent housing 10 to reliably fix the fire-fighting connecting portion 50. The second sealing member 92 may be provided between the first stopper portion 512 or the second stopper portion 522 and the top wall of the independent housing 10 to achieve sealing at the second mounting hole 82.

In some embodiments, as shown in fig. 1-6, fire fighting connection 50 includes a liquid fire fighting connection 53 and a gaseous fire fighting connection 54. Wherein liquid fire fighting connection 53 may be used to spray liquid fire fighting medium into receiving chamber 111, as shown in fig. 12-15, and gaseous fire fighting connection 54 may spray gaseous fire fighting medium into receiving chamber 111, as shown in fig. 16-20. By providing two different fire-fighting connecting parts 50, the electric storage module 100 can classify the fire class to perform 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, as shown in fig. 1-3 and 21-26, the top of the independent housing 10 is provided with a third mounting hole 83, and the lead-out structure 30 includes a main liquid-cooling connection portion 60, and the main liquid-cooling connection portion 60 is inserted into the third mounting hole 83 and sealed with the top wall of the independent housing 10 by a third sealing member 93. The total connecting portion 60 of liquid cooling can connect the group battery in the independent shell 10 and the liquid cooling unit outside the independent shell 10 (for example, the liquid cooling unit in the control module 210 is located), so that the liquid cooling unit can cool a plurality of group batteries in the independent shell 10 through the total connecting portion 60 of liquid cooling, and the liquid cooling unit does not need to be arranged in each independent shell 10, thereby improving the utilization rate of the space in the independent shell 10. And the liquid cooling mode does not need to contain the chamber 111 and communicate with the outside, has guaranteed the leakproofness of independent shell 10.

Further, as shown in fig. 21 to fig. 26, the liquid-cooling header connecting portion 60 has an inlet passage 61 and an outlet passage 62, and a third sealing member 93 is provided around the inlet passage 61 and the outlet passage 62. The liquid inlet structure and the liquid outlet structure are integrated, the number of holes formed in the independent shell 10 is reduced, the sealing performance is improved, liquid inlet and liquid outlet are sealed through the same sealing piece, the number of the sealing pieces is reduced, and the cost is reduced.

In some embodiments, as shown in fig. 21-26, the liquid cooling manifold 60 includes: a liquid-cooled joint body 63 and a joint fixing portion 64. The liquid cooling joint body 63 is inserted into the third mounting hole 83 to connect the battery pack and the liquid cooling unit. The liquid-cooled joint body can be provided with an inlet channel 61 and an outlet channel 62. The joint fixing portion 64 is disposed on the outer peripheral surface of the liquid-cooled joint body 63 and connected to the top wall of the independent housing 10 (for example, connected by a fastener), and a third sealing member 93 is disposed between the joint fixing portion 64 and the top wall of the independent housing 10, so that the third sealing member 93 is not easily moved or dislocated, thereby ensuring the sealing effect.

According to some embodiments of the present invention, as shown in fig. 1, the power storage module 100 may further include a partition plate 20, the partition plate 20 is disposed in the accommodating cavity 111 to partition the accommodating cavity 111 into a plurality of sub-cavities, and the battery packs are disposed in the plurality of sub-cavities in a one-to-one correspondence. For example, the partition plate 20 may be plural and distributed at intervals in the longitudinal direction to divide the accommodation chamber 111 into plural sub-chambers distributed in the longitudinal direction. The division installation of a plurality of group batteries can be realized through setting up division board 20, simple to operate, and be favorable to preventing the thermal runaway influence between the adjacent group batteries.

Other constructions and operations of the power storage module 100 according to the embodiment of the present invention 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 battery pack is arranged in the accommodating cavity;

at least one exit structure mounted to the self-contained housing at least partially disposed outside the self-contained housing, the exit structure sealingly engaging the self-contained housing.

2. The power storage module of the energy storage system of claim 1, wherein the top of the independent housing is provided with a first mounting hole, the lead-out structure comprises a total electrical connection structure, and the total electrical connection structure comprises:

the electric connection body penetrates through the first mounting hole;

the installation fixing part is arranged on the outer peripheral surface of the electric connection body and connected with the top wall of the independent shell, and a first sealing element is arranged between the installation fixing part and the top wall of the independent shell.

3. The power storage module of the energy storage system according to claim 1, wherein a second mounting hole is formed in the top of the independent housing, and the leading-out structure comprises a fire-fighting connection portion, which is inserted into the second mounting hole and sealed with the top wall of the independent housing by a second sealing member.

4. The power storage module of the energy storage system of claim 3, wherein the fire protection connection comprises:

the first joint is provided with a first channel, and the peripheral surface of the first joint is provided with a first limiting part;

a second joint, the second joint is provided with a second channel, the peripheral surface of the second joint is provided with a second limiting part,

one of the first joint and the second joint penetrates through the second mounting hole to be connected with the other joint, the first channel is communicated with the second channel,

the first limiting part and the second limiting part are clamped on two sides of the top wall of the independent shell, and the second sealing element is arranged between the first limiting part or the second limiting part and the top wall of the independent shell.

5. The power storage module of the energy storage system of claim 1, wherein a third mounting hole is formed in the top of the independent housing, and the lead-out structure comprises a liquid-cooled main connecting portion, wherein the liquid-cooled main connecting portion is inserted into the third mounting hole and sealed with the top wall of the independent housing by a third sealing member.

6. The power storage module of the energy storage system of claim 5, wherein the liquid cooled aggregate connection comprises:

the liquid cooling connector body penetrates through the third mounting hole;

the joint fixing part is arranged on the outer peripheral surface of the liquid cooling joint body and connected with the top wall of the independent shell, and the third sealing element is arranged between the joint fixing part and the top wall of the independent shell.

7. The power storage module of the energy storage system according to claim 1, wherein a fourth mounting hole is formed in the top of the independent housing, and the leading-out structure comprises an explosion-proof valve, and the explosion-proof valve is arranged in the fourth mounting hole in a penetrating mode and sealed with the top wall of the independent housing through a fourth sealing member.

8. The power storage module of the energy storage system of claim 7, wherein the explosion-proof valve comprises:

the valve body penetrates through the fourth mounting hole, and a valve convex part is arranged on the outer peripheral surface of the valve body;

a valve fastening portion connected with the valve body,

the valve fastening portion and the valve convex portion are clamped on two sides of the top wall of the independent shell, and the fourth sealing piece is arranged between the valve convex portion and the top wall of the independent shell.

9. The power storage module of the energy storage system of claim 1, wherein the independent housing comprises:

a housing body having the receiving cavity;

a door body for opening and closing a cavity opening of the accommodating cavity, wherein,

at least one of the shell body and the door body is provided with a fifth sealing piece, and the fifth sealing piece surrounds the cavity opening of the accommodating cavity and is used for sealing a gap between the shell body and the door body.

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

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