CN219937275U - Energy storage module and energy storage system comprising same - Google Patents

Abstract

The utility model provides an energy storage module and an energy storage system comprising the same, wherein the energy storage module comprises a plurality of energy storage boxes stacked along the height direction; the energy storage box comprises a box body and a stacking structure, and the stacking structure is fixed on the outer side face of the side plate of the box body; the stacking structure is provided with a first matching part and a second matching part which are respectively positioned at two ends of the stacking structure in the height direction, and at least one cover plate of the box body extends beyond the corresponding side in the height direction; for two adjacent energy storage boxes in the first direction, the first matching part of one energy storage box is in clamping connection with the second matching part of the other energy storage box. The energy storage boxes are stacked through the stacking structure, so that the cost consumed by manufacturing the support in the prior art is saved, the space limitation of the storage grids of the support is avoided as in the prior art, the space utilization rate is improved, the number of the energy storage boxes stacked in the height direction is not limited by the number of the storage grids of the support, and the flexibility of the arrangement of the energy storage boxes is improved.

Description

Energy storage module and energy storage system comprising same

Technical Field

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

Background

In order to facilitate the storage and management of the energy storage boxes, the prior art designs a bracket specially used for storing the energy storage boxes, the bracket is formed by assembling a plurality of cross beams and vertical beams, a plurality of storage grids with fixed sizes are formed in the bracket, and each storage grid can be used for storing one energy storage box.

The existing support structure for storing the energy storage box is complex, the assembly difficulty is high, and the assembly consumed working hours are long. The size of the energy storage box is basically smaller than that of the corresponding storage grid, so that the waste of the residual space of the storage grid can be caused, and the space utilization rate is reduced. And under the condition that the storage grid sizes are the same, the smaller the size of the energy storage box is, the lower the space utilization rate is. In addition, because the structure of support is fixed, the quantity and the overall arrangement of the storage grid that the support formed promptly are fixed, and the quantity of the energy storage case that every row, every row of support can hold is the fixed value, and the energy storage case arrangement mode is comparatively single.

Disclosure of Invention

The utility model aims to overcome the defects that in the prior art, an energy storage box is stored through a bracket, the space utilization rate is low, and the arrangement mode of the energy storage box is single.

The utility model solves the technical problems by the following technical scheme:

an energy storage module comprises a plurality of energy storage boxes which are sequentially stacked along a first direction, wherein the first direction is the height direction of the energy storage boxes;

the energy storage box comprises a box body and a stacking structure, wherein the box body comprises a side plate and two cover plates which are oppositely arranged, the two cover plates are respectively connected to two ends of the side plate in the first direction, and the stacking structure is fixed on the outer side surface of the side plate facing the outside of the box body;

the stacking structure is provided with a first matching part and a second matching part, the first matching part and the second matching part are respectively positioned at two ends of the stacking structure in the first direction, and at least one of the first matching part and the second matching part extends beyond the cover plate on the corresponding side along the first direction;

for two adjacent energy storage boxes in the first direction, the first matching part of one energy storage box is in clamping connection with the second matching part of the other energy storage box.

In the scheme, two adjacent energy storage boxes in the first direction are stacked through the stacking structure, and as the first matching part of one energy storage box is in clamping connection with the second matching part of the other energy storage box, the relative positions of the two energy storage boxes can be ensured to be stable, the relative movement is not easy to generate, and the stability after stacking is improved; on the other hand can also realize the location between two energy storage boxes, avoid the position of energy storage box to produce the skew, further improve the stability after the stack. In addition, because the stacked structure itself belongs to a part of the energy storage boxes, the cost consumed by manufacturing the bracket in the prior art is saved, the space limitation of the storage grids of the bracket is avoided as in the prior art, the space between two adjacent energy storage boxes can be greatly reduced, the space utilization rate is improved, the number of the energy storage boxes stacked in the first direction is not limited by the number of the storage grids of the bracket, the layout can be specifically carried out according to the actual requirements, the flexibility of the arrangement of the energy storage boxes is improved, the overall energy density is improved, and the standardized production of the energy storage boxes is facilitated.

Preferably, the energy storage module further satisfies one or more of the following conditions:

a1, the first mating portion comprising a first protrusion extending in the first direction towards the exterior of the stacked structure, the second mating portion comprising a first recess recessed in the first direction towards the interior of the stacked structure, the first protrusion being received within the first recess;

b1, the energy storage module further comprises a fixing assembly, and two adjacent energy storage boxes in the first direction are detachably connected through the fixing assembly;

c1, the stacking structure further comprises a hanging portion, wherein the hanging portion comprises a second groove with a downward opening, and the second groove is used for being matched with hoisting equipment.

In this scheme, realize the block connection between first cooperation portion and the second cooperation portion through the cooperation of first arch and first recess, reduce the possibility that the energy storage case moved in the horizontal direction, improve the stability after the stack. And the first bulge and the first groove are simple in structure, easy to process and low in assembly difficulty, and the stacking efficiency of the energy storage box can be improved. The fixed subassembly is used for realizing the further connection between a plurality of energy storage boxes, further prevents to produce relative movement between the energy storage boxes, improves the stability after the stack. The stacking structure can replace the traditional lifting lug to facilitate the lifting of the energy storage box, so that the lifting lug does not need to be additionally arranged, and the structure of the energy storage box is simplified.

Preferably, when the energy storage module satisfies at least the a1, the energy storage module further satisfies one or more of the following conditions:

a2, the first protrusion and the first groove each extend in a second direction to an end of the stacked structure in the second direction;

b2, the number of the first protrusions is a plurality of the first protrusions, and the first protrusions are arranged at intervals along a third direction; the number of the first grooves is the same as that of the first protrusions, and the first grooves and the first protrusions are arranged in one-to-one correspondence;

the second direction and the first direction form an included angle, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate; the third direction is perpendicular to a plane formed by the first direction and the second direction.

In this scheme, first arch and first recess extend to the tip of stacking structure along the second direction, play the effect of direction to the stacking process of energy storage case, and the energy storage case that is located the top can be followed the energy storage case that is located the below and is inserted in the ascending tip of second direction, keeps the relative position of two energy storage cases unchanged all the time, need not adjust again after stacking is accomplished, reduces and stacks the degree of difficulty and the man-hour that consumes. The limiting effect and the positioning effect on the energy storage box can be further enhanced by arranging the plurality of first bulges and the plurality of first grooves.

Preferably, when the energy storage module at least satisfies b1, the fixing assembly includes a fastener, a first connection hole and a second connection hole;

the first connecting hole is arranged on the first matching part, and one end, far away from the second matching part, of the first connecting hole in the first direction is communicated; the second connecting hole is arranged on the second matching part, one end, far away from the first matching part, of the second connecting hole in the first direction is communicated, and the axial direction of the first connecting hole is parallel to the axial direction of the second connecting hole;

for two adjacent energy storage boxes in the first direction, the axis of the first connecting hole of one energy storage box coincides with the axis of the second connecting hole of the other energy storage box, and the fastener is simultaneously arranged in the first connecting hole of one energy storage box and the second connecting hole of the other energy storage box in a penetrating mode.

In this scheme, provide a fixed subassembly's concrete structure, realize the detachable connection of two adjacent energy storage boxes through the cooperation of fastener and connecting hole, joint strength is high, easy operation.

Preferably, the stacking structure is a split structure, the stacking structure comprises a first stacking body and a second stacking body which are arranged at intervals in the first direction, the first matching part is arranged on one side of the first stacking body away from the second stacking body, and the second matching part is arranged on one side of the second stacking body away from the first stacking body.

In this scheme, compare in monolithic stacked structure, split type stacked structure can reduce the height of first stacked body and second stacked body in first direction, reduces the material that stacked structure consumed, reduce cost and stacked structure's weight to reduce the holistic weight of energy storage case, reduce the effort that stacked structure received.

Preferably, the energy storage module further satisfies one or more of the following conditions:

a3, the second stacking body and the side plate are integrally formed;

b3, the first stack body is abutted against the second stack body at one end facing the second stack body in the first direction.

In the scheme, on one hand, the step of assembling the second stacking body and the side plate can be omitted by integral molding, so that the assembling efficiency is improved; on the other hand, even if the height of the second stacking body in the first direction is designed smaller, the second stacking body and the side plate can be guaranteed to have higher connection strength, so that the space occupied by the second stacking body in the first direction is reduced, more space is reserved for the first stacking body, and the connection strength of the first stacking body and the side plate is guaranteed. The first stacking body is abutted with the second stacking body, so that whether the first stacking body is located above the second stacking body or the second stacking body is located above the first stacking body, acting force born by one stacking body can be transmitted to the other stacking body, acting force born by a single stacking body is reduced, acting force born by the whole stacking structure is increased, and reliability of stacking of the energy storage boxes by the stacking structure is improved.

Preferably, the number of the stacking structures is multiple, the box body comprises two side plates which are oppositely arranged, and the two side plates are respectively connected to two ends of the cover plate in the third direction; the energy storage module also satisfies one or more of the following conditions:

a4, the stacking structure is arranged on any side plate;

b4, fixing a plurality of stacking structures which are arranged at intervals along the second direction on any side plate;

c4, the stacking structures on the two side plates are the same in number and are arranged in one-to-one correspondence;

the second direction and the first direction form an included angle, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate; the third direction is perpendicular to a plane formed by the first direction and the second direction.

In this scheme, all set up stacked structure in the both sides of energy storage case, guarantee that the atress is even and can support the energy storage case better. The plurality of stacking structures are arranged on the same side of the energy storage box, so that the bearing capacity of the energy storage box can be improved, the size of a single stacking structure can be designed to be a smaller value, the stacking structures with proper number can be selected according to the change of the size of the side plate, and standardized production of the stacking structures is facilitated. The quantity of the stacking structures on two sides of the energy storage box is the same and the stacking structures are arranged in one-to-one correspondence, so that the stress is further ensured to be even, the acting force applied to a certain stacking structure is prevented from being damaged more easily, and the service life of the stacking structure is prolonged. In addition, the same stacking structure is adopted, so that the cost of die opening processing can be reduced, and the cost is reduced.

Preferably, the energy storage module further satisfies one or more of the following conditions:

a5, a first guide part is arranged on the side plate, a second guide part is arranged on the stacking structure, and the first guide part is connected with the second guide part;

b5, the energy storage module further comprises a leg, for a row of the energy storage tanks stacked in the first direction, the leg being fixed to the bottom of the lowest energy storage tank in the row of the energy storage tanks.

In this scheme, realize the location of stacked structure on the curb plate through the cooperation of first guiding portion and second guiding portion, improve the packaging efficiency of both. The stabilizer blade is used for playing the effect of supporting to a row of energy storage case, avoids the energy storage case to directly place subaerial, improves the stability of a row of energy storage case, prevents that the energy storage case from rocking the vibration.

Preferably, when the energy storage module at least satisfies the a5, one of the first guide part and the second guide part includes a second protrusion extending in a second direction, and the other includes a third groove extending in the second direction, the second protrusion being received in the third groove; the second direction and the first direction form an included angle, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate;

and when the energy storage module at least meets the requirement b5, the support legs are fixedly connected with the stacking structure.

In this scheme, through the cooperation of second arch and third recess, when realizing the location of stack structure on the curb plate, the curb plate can also produce the effect that supports to stack structure in first direction for the curb plate can be given in the partly effort that stack structure received, prevents that stack structure from damaging because the effort that receives is too big. The supporting legs are connected with the stacking structure without damaging the structure of the box body of the energy storage box, so that the tightness of the box body is ensured.

An energy storage system comprising a plurality of energy storage modules as described above.

In this scheme, energy storage system passes through the energy storage case prestored electric quantity, can use when useful electricity demand.

The utility model has the positive progress effects that: two adjacent energy storage boxes in the first direction are stacked through a stacking structure, and as the first matching part of one energy storage box is in clamping connection with the second matching part of the other energy storage box, the relative positions of the two energy storage boxes can be ensured to be stable, the relative movement is not easy to generate, and the stability after stacking is improved; on the other hand can also realize the location between two energy storage boxes, avoid the position of energy storage box to produce the skew, further improve the stability after the stack. In addition, because the stacked structure itself belongs to a part of the energy storage boxes, the cost consumed by manufacturing the bracket in the prior art is saved, the space limitation of the storage grids of the bracket is avoided as in the prior art, the space between two adjacent energy storage boxes can be greatly reduced, the space utilization rate is improved, the number of the energy storage boxes stacked in the first direction is not limited by the number of the storage grids of the bracket, the layout can be specifically carried out according to the actual requirements, the flexibility of the arrangement of the energy storage boxes is improved, the overall energy density is improved, and the standardized production of the energy storage boxes is facilitated.

Drawings

Fig. 1 is a schematic perspective view of an energy storage module according to an embodiment of the utility model.

Fig. 2 is a schematic side view of an energy storage module according to an embodiment of the utility model.

Fig. 3 is a schematic top view of an energy storage module according to an embodiment of the utility model.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Fig. 5 is an enlarged view of a portion B of fig. 2.

Fig. 6 is a schematic perspective view of a first stacked body according to an embodiment of the utility model.

Fig. 7 is a schematic side view of a first stacked body according to an embodiment of the utility model.

Fig. 8 is an enlarged view of a portion C of fig. 2.

Fig. 9 is a schematic perspective view of a stand bar according to an embodiment of the present utility model.

Fig. 10 is a schematic side view of a foot according to an embodiment of the present utility model.

Reference numerals illustrate:

energy storage box 1

Box body 2

Side plate 21

Cover plate 22

End plate 23

Stacked structure 3

First stacked body 31

First fitting portion 311

First protrusion 3111

Hitching section 312

First hitching unit 3121

Second hitching unit 3122

Third hitching unit 3123

Second groove 3124

Second stack 32

Second fitting portion 321

First groove 3211

First connecting hole 41

Second connecting hole 42

Third connecting hole 43

Third groove 51

Second protrusion 52

Support leg 6

Third protrusion 61

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.

The embodiment discloses an energy storage system, which comprises a plurality of energy storage modules shown in fig. 1-3, wherein each energy storage module comprises a plurality of energy storage boxes 1 sequentially stacked along a first direction (X direction in fig. 1), and the first direction is specifically the height direction of the energy storage boxes 1. The energy storage system can store electric quantity in advance through the energy storage box 1, and can be used when the electric quantity is required. For example, the charging standards of the electric charges in different time periods are different, and the energy storage system can store the electric quantity in advance when the electric charges are low and can be used when the electric charges are high so as to reduce the electricity consumption cost.

The number of the energy storage modules in the energy storage system can be one or more according to actual demands, when the number of the energy storage modules is multiple, the energy storage modules can be arranged in the same horizontal plane (such as the ground), and the specific arrangement mode can be designed according to actual conditions, so that the flexibility is high. Further, the relative positions among the energy storage modules can be fixed, so that the mutual interference among the energy storage modules is prevented, and the normal charge and discharge of the energy storage system are ensured. In addition, the number of the energy storage tanks 1 in a single energy storage module may be designed according to actual requirements, and in particular, may be one or more, and when the number of the energy storage tanks 1 in a single energy storage module is one, there is no another energy storage tank 1 stacked therewith in the first direction. The number of energy storage tanks 1 in different energy storage modules of the same energy storage system may be the same or different.

As shown in fig. 1 to 5, the energy storage tank 1 includes a tank body 2 and a stacked structure 3.

As shown in fig. 1 to 3, the case 2 includes two oppositely disposed side plates 21, two oppositely disposed cover plates 22, and two oppositely disposed end plates 23. The two side plates 21 are arranged at intervals in the third direction (Z direction in fig. 1), the two cover plates 22 are arranged at intervals in the first direction, the two end plates 23 are arranged at intervals in the second direction (Y direction in fig. 1), both ends of the two side plates 21 in the first direction are respectively connected with the cover plates 22 on the corresponding sides, and both ends of the two side plates 21 in the second direction are respectively connected with the end plates 23 on the corresponding sides. The two side plates 21, the two cover plates 22 and the two end plates 23 enclose a hollow box body 2, and a battery cell assembly is accommodated in the box body 2 and is used for generating or absorbing current so as to realize the charging and discharging of the energy storage box 1. The electric connector and other structures are fixed on the end plate 23, and the electric connector is electrically connected with the electric core assembly to realize current transmission.

The second direction in this embodiment is perpendicular to the first direction, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate 21. The third direction is perpendicular to a plane formed by the first direction and the second direction. In other alternative embodiments, the degree of the included angle between the second direction and the first direction may be other, and may be defined according to the shape of the case 2.

As shown in fig. 1 to 3, the stacking structure 3 is provided on the side plate 21, and has an outer side surface facing the outside of the case 2 for fixing to the side plate 21 so as to avoid interference with the structure of the electric connector or the like on the end plate 23, and the two energy storage tanks 1 adjacent in the first direction are stacked in the first direction by the stacking structure 3. In other alternative embodiments, the stacking structure 3 may be fixed on the outer side surface of the end plate 23 facing the outside of the case 2, but since the end plate 23 is provided with a structure such as an electrical connector, the stacking structure 3 needs to be disposed at a position avoiding the structure such as the electrical connector to avoid interference. The reason why the stacking structure 3 is not disposed on the cover plate 22 in this embodiment is that the stacking structure 3 receives the force in the first direction, so as to avoid the deformation of the cover plate 22 and the extrusion of the cell assembly inside the case 2 caused by the transmission of the force received by the stacking structure 3 to the cover plate 22, and ensure the normal use of the energy storage case 1.

As shown in fig. 4 and 5, the stacked structure 3 has a first engaging portion 311 and a second engaging portion 321, the first engaging portion 311 and the second engaging portion 321 being located at both ends of the stacked structure 3 in the first direction, respectively, the first engaging portion 311 being located above the second engaging portion 321, the first engaging portion 311 extending in the first direction beyond the cover plate 22 on the upper side of the case 2. Specifically, the stacking structure 3 in the present embodiment is a split structure, the stacking structure 3 includes a first stacking body 31 and a second stacking body 32 that are disposed at intervals in a first direction, the first stacking body 31 is located on the second stacking body 32, the first mating portion 311 is disposed on a side of the first stacking body 31 away from the second stacking body 32, and the second mating portion 321 is disposed on a side of the second stacking body 32 away from the first stacking body 31. The split type stacking structure 3 can reduce the height of the first stacking body 31 and the second stacking body 32 in the first direction, reduce the materials consumed by the stacking structure 3, reduce the cost and the weight of the stacking structure 3, thereby reducing the overall weight of the energy storage box 1 and reducing the acting force applied to the stacking structure 3.

In other alternative embodiments, the second engaging portion 321 may extend downward in the first direction beyond the cover plate 22 on the lower side of the case 2, or the first engaging portion 311 and the second engaging portion 321 may each extend in the first direction beyond the cover plate 22 on the corresponding side.

Further, as shown in fig. 4 and 5, the first stacked body 31 is welded to the side plate 21, and the second stacked body 32 is integrally formed with the side plate 21. On the one hand, the step of assembling the second stacked body 32 with the side plate 21 can be omitted, improving the assembling efficiency; on the other hand, even if the height of the second stacked body 32 in the first direction is designed smaller, the second stacked body 32 and the side plate 21 can be ensured to have higher connection strength, so that the space occupied by the second stacked body 32 in the first direction is reduced, more space for mounting the side plate 21 is reserved for the first stacked body 31, and the connection strength of the first stacked body 31 and the side plate 21 is ensured.

In other alternative embodiments, the first stack 31 may be integrally formed with the side plate 21, or the second stack 32 may be separately manufactured and then welded to the side plate 21.

As shown in fig. 4 and 5, for two energy storage tanks 1 adjacent in the first direction, the first engaging portion 311 on the lower energy storage tank 1 extends upward beyond the cover plate 22 on the upper side of the tank body 2 and can abut against and be engaged with the second engaging portion 321 of the other energy storage tank 1 located above, thereby realizing that two energy storage tanks 1 adjacent in the first direction are stacked by the stacking structure 3. On one hand, the clamping connection can ensure that the relative positions of the two energy storage boxes 1 are stable, the relative movement is not easy to generate, and the stability after stacking is improved; on the other hand can also realize the location between two energy storage boxes 1, avoid the position of energy storage box 1 to produce the skew, further improve the stability after the stack.

In addition, because the stacking structure 3 belongs to a part of the energy storage boxes 1, the cost consumed by manufacturing the bracket in the prior art is saved, the space limitation of the storage grids of the bracket is avoided as in the prior art, the space between two adjacent energy storage boxes 1 can be greatly reduced, the space utilization rate is improved, the number of the energy storage boxes 1 stacked in the first direction is not limited by the number of the storage grids of the bracket, the layout can be specifically carried out according to the actual demands, the flexibility of the arrangement of the energy storage boxes 1 is improved, the overall energy density is improved, and the standardized production of the energy storage boxes 1 is facilitated.

Further, as shown in fig. 5, in the same energy storage box 1, one end of the first stack 31 facing the second stack 32 in the first direction (i.e., the lower end of the first stack 31) is abutted against the second stack 32, so that the acting force from the upper energy storage box 1 received by the first stack 31 can be transferred to the second stack 32, the acting force received by a single stack can be reduced, the acting force born by the whole stack structure 3 can be increased, and the reliability of stacking the energy storage boxes 1 by the stack structure 3 can be improved.

Further, as shown in fig. 4-7, the first stacking body 31 in this embodiment is specifically a lifting lug structure, which has a hanging portion 312 for being matched with a lifting device, so that the energy storage box 1 can be carried, and meanwhile, the traditional lifting lug can be replaced to facilitate the lifting of the energy storage box 1, so that no lifting lug is required to be additionally arranged, and the structure of the energy storage box 1 is simplified. Specifically, the hooking portion 312 includes a first hooking unit 3121, a second hooking unit 3122, a third hooking unit 3123, and a second groove 3124, the first hooking unit 3121 is fixed under the first fitting portion 311, the second hooking unit 3122 and the third hooking unit 3123 are fixed under the first hooking unit 3121 and are respectively located at both sides of the first hooking unit 3121 in the third direction, the second hooking unit 3122 is connected to a side of the first hooking unit 3121 remote from the side plate 21, the third hooking unit 3123 is connected to a side of the first hooking unit 3121 near the side plate 21, and the second hooking unit 3122 and the third hooking unit 3123 have a space in the third direction. The second hitching unit 3122 and the third hitching unit 3123 are plate-shaped structures extending downward, and the height of the second hitching unit 3122 in the first direction is smaller than the height of the third hitching unit 3123 in the first direction, and the lower end of the third hitching unit 3123 is abutted with the second stacked body 32. The first hitching unit 3121, the second hitching unit 3122 and the third hitching unit 3123 enclose a second groove 3124 with a downward opening, tools such as a lifting hook of the lifting device can be clamped into the second groove 3124 from a gap between the second hitching unit 3122 and the second stacking body 32, connection with the energy storage box 1 is realized, the second groove 3124 can limit movement of the lifting hook in the third direction, the lifting hook is prevented from moving out of the second groove 3124, and lifting stability is improved.

As shown in fig. 4, the second stacked body 32 in this embodiment is specifically a hollow beam structure, and has a simple structure and low design difficulty for the mold when the side plates 21 are integrally formed.

In other alternative embodiments, the first stack 31 and the second stack 32 may be other structures capable of achieving the above-described functions.

As shown in fig. 4 and 5, the first engagement portion 311 includes a first protrusion 3111 extending toward the outside of the stack 3 in the first direction, the second engagement portion 321 includes a first groove 3211 recessed toward the inside of the stack 3 in the first direction, the first protrusion 3111 is received in the first groove 3211, and the engagement connection between the first engagement portion 311 and the second engagement portion 321 is achieved by the engagement of the first protrusion 3111 and the first groove 3211, so that the possibility of the tank 1 moving in the horizontal direction is reduced, and the stability after stacking is improved. And the first protrusion 3111 and the first groove 3211 are simple in structure, easy to process, low in assembly difficulty, and capable of improving stacking efficiency of the energy storage tank 1.

Further, as shown in fig. 4 and 6, the first protrusion 3111 and the first groove 3211 in the present embodiment extend to the end of the stacking structure 3 in the second direction, which plays a role in guiding the stacking process of the energy storage boxes 1, and the energy storage box 1 located above may be inserted from the end of the energy storage box 1 located below in the second direction, so that the relative positions of the two energy storage boxes 1 are always kept unchanged, without adjustment after stacking is completed, and stacking difficulty and consumed man-hours are reduced.

In other alternative embodiments, the first protrusions 3111 and the first grooves 3211 may not be continuous in the second direction, but a plurality of first protrusions 3111 spaced apart in the second direction and independent of each other may be provided, and a plurality of first grooves 3211 spaced apart in the second direction and independent of each other may be provided, where the number of first protrusions 3111 and the number of first grooves 3211 are the same and are arranged in a one-to-one correspondence.

As shown in fig. 4 and 5, the number of first protrusions 3111 and first grooves 3211 in the present embodiment is plural, and the number of first grooves 3211 is the same as the number of first protrusions 3111. The plurality of first protrusions 3111 are disposed at intervals along the third direction, the plurality of first grooves 3211 are disposed at intervals along the third direction, and the first grooves 3211 are disposed in one-to-one correspondence with the first protrusions 3111. In this embodiment, by providing the plurality of first protrusions 3111 and the plurality of first grooves 3211, the limiting effect and the positioning effect on the energy storage tank 1 can be further enhanced.

In other alternative embodiments, it is also possible to provide only one first protrusion 3111 and one first recess 3211 on a single stack 3.

As shown in fig. 4 and 6, the energy storage module further includes a fixing member by which two adjacent energy storage tanks 1 in the first direction are detachably connected. The fixed component is used for realizing the further connection among the energy storage boxes 1, further preventing the relative movement between the energy storage boxes 1 and improving the stability after stacking.

Specifically, as shown in fig. 4 and 6, the fixing assembly includes a fastener (not shown), a first coupling hole 41, and a second coupling hole 42. The first connection hole 41 is provided in the first fitting portion 311, and an end of the first connection hole 41 away from the second fitting portion 321 in the first direction (i.e., an upper end of the first connection hole 41) is penetrated. The second connection hole 42 is provided in the second fitting portion 321, and both ends of the second connection hole 42 in the first direction are penetrated, and the axial direction of the first connection hole 41 and the axial direction of the second connection hole 42 are parallel. For two adjacent energy storage boxes 1 in the first direction, the axis of the first connecting hole 41 of one energy storage box 1 coincides with the axis of the second connecting hole 42 of the other energy storage box 1, and the fastener is simultaneously penetrated in the first connecting hole 41 of one energy storage box 1 and the second connecting hole 42 of the other energy storage box 1 so as to realize detachable connection of the two adjacent energy storage boxes 1, and the energy storage box has high connection strength and simple operation.

The fastening member may be one or more of a bolt, a metal buckle, and the like, and the first connecting hole 41 and the second connecting hole 42 adapted to the fastening member are also designed as connecting holes matched with the shape of the fastening member.

In other alternative embodiments, only one end of the second connection hole 42 away from the first fitting portion 311 in the first direction (i.e., the lower end of the second connection hole 42) may penetrate. The second connecting hole 42 is provided to be penetrated at both ends in the present embodiment because the first and second stacked bodies 31 and 32 have a space in the first direction, and the fastener may sequentially penetrate the second and first connecting holes 42 and 41 from top to bottom at the space, thereby facilitating the operation.

As shown in fig. 1-3, the number of the stacking structures 3 in the present embodiment is plural, the stacking structures 3 are disposed on two side plates 21 of the box 2, and each side plate 21 is fixed with a plurality of stacking structures 3 disposed at intervals along the second direction, and the stacking structures 3 on the two side plates 21 are the same in number and disposed in one-to-one correspondence. The first stacks 31 on the same side plate 21 are independent from each other, and the second stacks 32 are integrated.

In other alternative embodiments, only one side plate 21 may be provided with the stacking structure 3, or only one stacking structure 3 may be provided on both side plates 21, or the stacking structures 3 on both side plates 21 may be different in number and not in one-to-one correspondence. Alternatively, the plurality of second stacks 32 may be independent of each other, and the number of second stacks 32 is the same as the number of first stacks 31.

By adopting the arrangement mode, the method has the advantages that the stress is uniform, the acting force applied to a certain stacking structure 3 is prevented from being more easily damaged, and the service life of the stacking structure 3 is prolonged; secondly, the bearing capacity of the energy storage box 1 can be improved; thirdly, the size of the single stacking structure 3 can be designed to be smaller, and a proper number of stacking structures 3 can be selected according to the change of the size of the side plates 21, so that standardized production of the stacking structures 3 is facilitated.

Further, the plurality of stacked structures 3 have the same shape, so that the cost of the mold opening process can be reduced, and the cost can be reduced. In other alternative embodiments, different shaped stacks 3 may be secured to the same housing 2.

In other alternative embodiments, the stacking structure 3 may be integrated, in which state the first engaging portion 311 and the second engaging portion 321 are disposed at two ends of the stacking structure 3 in the first direction, and the first connecting hole 41 and the second connecting hole 42 may be two connecting holes that are independent from each other and have only one open end, or may be combined into one connecting hole that has two open ends.

As shown in fig. 4, the side plate 21 is provided with a first guiding part, the stacking structure 3 is provided with a second guiding part, the first guiding part is connected with the second guiding part, and the stacking structure 3 is positioned on the side plate 21 through the cooperation of the first guiding part and the second guiding part, so that the assembly efficiency of the two parts is improved.

Specifically, as shown in fig. 4, the first guide is a third groove 51 extending in the second direction, the third groove 51 extending to an end of the side plate 21 in the second direction, the second guide is provided on the first stacked body 31 and is a second projection 52 extending in the second direction, the second projection 52 is accommodated in the third groove 51, and the first stacked body 31 can be inserted into the third groove 51 from the end of the side plate 21 in the second direction. Thereby, while the positioning of the stacked structure 3 on the side plate 21 is achieved, the side plate 21 can also exert a supporting effect on the first stacked body 31 in the first direction, so that a part of the acting force received by the first stacked body 31 can be transmitted to the side plate 21, and the first stacked body 31 is prevented from being damaged due to the excessively large acting force received.

In other alternative embodiments, the first guiding portion may be a second protrusion 52, and the second guiding portion may be a third groove 51.

As shown in fig. 2, 8-10, the energy storage module further comprises a leg 6, which leg 6 is fixed to the bottom of the energy storage tank 1 located lowest in the row of energy storage tanks 1 for the row of energy storage tanks 1 stacked in the first direction. The stabilizer blade 6 is used for playing the effect of supporting to a row of energy storage case 1, avoids energy storage case 1 directly to place subaerial, improves the stability of a row of energy storage case 1, prevents that energy storage case 1 from rocking the vibration.

As shown in fig. 9 and 10, the support legs 6 are fixedly connected with the stacking structure 3, so that the sealing performance of the tank body 2 is ensured without damaging the structure of the tank body 2 of the energy storage tank 1. Specifically, the leg 6 comprises a third protrusion 61 extending upwards, the third protrusion 61 cooperating with a first recess 3211 of the tank 1 located at the lowermost position, whereby the connection of the leg 6 to the stacking structure 3 is achieved.

Further, as shown in fig. 9, the leg 6 is further provided with a third connecting hole 43, the third connecting hole 43 penetrates through towards one end of the energy storage box 1 in the first direction, and the third connecting hole 43 can be connected with the second connecting hole 42 on the second stacked body 32 through the fastener, so that the position of the leg 6 and the energy storage box 1 is further fixed.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships of the device or component shown during normal use, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. The energy storage module is characterized by comprising a plurality of energy storage boxes which are sequentially stacked along a first direction, wherein the first direction is the height direction of the energy storage boxes;

the energy storage box comprises a box body and a stacking structure, wherein the box body comprises a side plate and two cover plates which are oppositely arranged, the two cover plates are respectively connected to two ends of the side plate in the first direction, and the stacking structure is fixed on the outer side surface of the side plate facing the outside of the box body;

the stacking structure is provided with a first matching part and a second matching part, the first matching part and the second matching part are respectively positioned at two ends of the stacking structure in the first direction, and at least one of the first matching part and the second matching part extends beyond the cover plate on the corresponding side along the first direction;

for two adjacent energy storage boxes in the first direction, the first matching part of one energy storage box is in clamping connection with the second matching part of the other energy storage box.

2. The energy storage module of claim 1, wherein the energy storage module further satisfies one or more of the following conditions:

a1, the first mating portion comprising a first protrusion extending in the first direction towards the exterior of the stacked structure, the second mating portion comprising a first recess recessed in the first direction towards the interior of the stacked structure, the first protrusion being received within the first recess;

b1, the energy storage module further comprises a fixing assembly, and two adjacent energy storage boxes in the first direction are detachably connected through the fixing assembly;

c1, the stacking structure further comprises a hanging portion, wherein the hanging portion comprises a second groove with a downward opening, and the second groove is used for being matched with hoisting equipment.

3. The energy storage module of claim 2, wherein when the energy storage module satisfies at least the a1, the energy storage module further satisfies one or more of the following conditions:

a2, the first protrusion and the first groove each extend in a second direction to an end of the stacked structure in the second direction;

b2, the number of the first protrusions is a plurality of the first protrusions, and the first protrusions are arranged at intervals along a third direction; the number of the first grooves is the same as that of the first protrusions, and the first grooves and the first protrusions are arranged in one-to-one correspondence;

the second direction and the first direction form an included angle, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate; the third direction is perpendicular to a plane formed by the first direction and the second direction.

4. The energy storage module of claim 2, wherein the securing assembly includes a fastener, a first connection hole, and a second connection hole when the energy storage module meets at least b 1;

the first connecting hole is arranged on the first matching part, and one end, far away from the second matching part, of the first connecting hole in the first direction is communicated; the second connecting hole is arranged on the second matching part, one end, far away from the first matching part, of the second connecting hole in the first direction is communicated, and the axial direction of the first connecting hole is parallel to the axial direction of the second connecting hole;

for two adjacent energy storage boxes in the first direction, the axis of the first connecting hole of one energy storage box coincides with the axis of the second connecting hole of the other energy storage box, and the fastener is simultaneously arranged in the first connecting hole of one energy storage box and the second connecting hole of the other energy storage box in a penetrating mode.

5. The energy storage module according to any one of claims 1 to 4, wherein the stacked structure is a split structure, the stacked structure includes a first stacked body and a second stacked body that are disposed at intervals in the first direction, the first mating portion is disposed on a side of the first stacked body away from the second stacked body, and the second mating portion is disposed on a side of the second stacked body away from the first stacked body.

6. The energy storage module of claim 5, further satisfying one or more of the following conditions:

a3, the second stacking body and the side plate are integrally formed;

b3, the first stack body is abutted against the second stack body at one end facing the second stack body in the first direction.

7. The energy storage module according to claim 1, wherein the number of the stacked structures is plural, the case includes two side plates disposed opposite to each other, and the two side plates are respectively connected to both ends of the cover plate in the third direction; the energy storage module also satisfies one or more of the following conditions:

a4, the stacking structure is arranged on any side plate;

b4, fixing a plurality of stacking structures which are arranged at intervals along the second direction on any side plate;

c4, the stacking structures on the two side plates are the same in number and are arranged in one-to-one correspondence;

the second direction and the first direction form an included angle, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate; the third direction is perpendicular to a plane formed by the first direction and the second direction.

8. The energy storage module of claim 1, wherein the energy storage module further satisfies one or more of the following conditions:

a5, a first guide part is arranged on the side plate, a second guide part is arranged on the stacking structure, and the first guide part is connected with the second guide part;

b5, the energy storage module further comprises a leg, for a row of the energy storage tanks stacked in the first direction, the leg being fixed to the bottom of the lowest energy storage tank in the row of the energy storage tanks.

9. The energy storage module of claim 8, wherein one of the first and second guides includes a second protrusion extending in a second direction and the other includes a third recess extending in the second direction, the second protrusion being received in the third recess when the energy storage module meets at least the a 5; the second direction and the first direction form an included angle, and a plane formed by the first direction and the second direction is parallel to the outer side surface of the side plate;

and when the energy storage module at least meets the requirement b5, the support legs are fixedly connected with the stacking structure.

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