Expandable square aluminum shell battery for energy storage

Abstract

The invention relates to the technical field of batteries, in particular to an expandable square aluminum shell battery for energy storage, the expandable square aluminum shell battery for energy storage comprises a battery shell and a battery cell installed in the battery shell, matched limiting holes are symmetrically formed in the two sides of one end of the battery shell, storage channels are symmetrically formed in the two sides of the battery shell, and the matched limiting holes are communicated with the storage channels. A shell end part sealing mechanism is arranged at one end, far away from the matched limiting hole, of the battery shell; the shell end part sealing mechanism can be used for sealing the end parts of the battery shell before and after capacity expansion; in the use process of the battery, when capacity expansion needs to be carried out according to the use requirements, the battery shell can be operated, so that the storage space of the battery shell is enlarged, the number of the battery cells can be increased, the capacity expansion requirement is met by increasing the number of the battery cells, the corresponding capacity expansion requirement is met, and the operation is simple, convenient and rapid.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to an expandable square aluminum shell battery for energy storage. Background Art

[0002] Square aluminum shell batteries play an important role in the current battery market. They use aluminum materials as the outer shell, providing strong mechanical protection to prevent thermal runaway of the battery under collision or extreme conditions, and are widely used in various fields.

[0003] The square aluminum shell battery includes a battery housing and battery cells. The design of the battery housing of the existing square aluminum shell battery is relatively simple, and its shape is fixed and cannot be changed. As a result, the number of battery cells that can be accommodated inside the battery housing is also fixed. This makes it impossible to expand the battery by increasing the number of battery cells during actual use, and it cannot meet the increasing demand for energy storage. Summary of the Invention

[0004] The purpose of the present invention is to provide an expandable square aluminum shell battery for energy storage to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: An expandable square aluminum shell battery for energy storage, including a battery housing and battery cells installed in the battery housing. On both sides of one end of the battery housing, there are symmetrically arranged mating limit holes, and on both sides of the battery housing, there are symmetrically arranged receiving channels; At one end of the battery housing away from the mating limit holes, there is a housing end closing mechanism, which can close the ends of the battery housing before and after expansion; On the upper side of the battery housing, there is also installed a housing top closing mechanism, which can close the upper end of the battery housing. And on the housing top closing mechanism, there is an interlocking fixing mechanism, which limits and locks the housing end closing mechanism and the housing top closing mechanism; On the housing top closing mechanism, there is also a movable top closing mechanism, which closes the upper end of the battery housing after expansion; In the receiving channels, there is inserted a movable side closing mechanism, which moves synchronously with the movable top closing mechanism to achieve the lateral closing of the battery housing after expansion.

[0006] Preferably, on both sides of one end of the battery housing away from the mating limit holes, there are symmetrically and fixedly arranged outwardly protruding bearing strips; A support and cooperation bottom block is fixedly arranged at the lower end of the convex bearing strip. A hinge hole is formed in the support and cooperation bottom block, and a connection and fixation hole is formed at the upper end of the convex bearing strip; The connection and fixation hole is communicated with the storage channel, and the support and cooperation bottom block supports the end closing mechanism of the housing.

[0007] Preferably, the end closing mechanism of the housing includes a movable bearing plate and an expansion protection plate. Hinge shafts are symmetrically arranged on both sides of the movable bearing plate, and the hinge shafts are matched with the hinge holes; Before expansion, the movable bearing plate is in a vertical state and contacts the end face of the battery housing away from the cooperation and limit hole; A support and limit hole is formed in the movable bearing plate beside the hinge shaft. A limit vertical plate is fixedly arranged on the movable bearing plate, and a storage insertion cavity is also formed in the movable bearing plate.

[0008] Preferably, when the movable bearing plate is in a vertical state, the expansion protection plate is inserted into the storage insertion cavity; A support bottom strip is fixedly arranged on the expansion protection plate, and a limit cooperation cavity is arranged on the support bottom strip.

[0009] Preferably, after expansion, the movable bearing plate is in a horizontal state, and the expansion protection plate is placed on the movable bearing plate. The positioning of the expansion protection plate is realized through the cooperation of the limit cooperation cavity and the limit vertical plate.

[0010] Preferably, the top closing mechanism of the housing is a closing top plate. Limit cooperation columns are symmetrically and fixedly arranged at both ends of one end of the closing top plate, and the limit cooperation columns are inserted into the cooperation and limit holes; A bearing sheath is fixedly arranged at the upper end of the closing top plate. A connection through hole is formed at one end of the bearing sheath, and a limit channel is formed at the upper end of the bearing sheath. A moving channel is arranged beside the limit channel.

[0011] Preferably, a convex bearing strip is fixedly arranged at one end of the closing top plate away from the limit cooperation column, and a guiding cooperation hole is arranged on the convex bearing strip; A bearing groove is formed on the lower end face of the closing top plate, and support moving grooves are symmetrically formed on both sides inside the bearing groove.

[0012] Preferably, the interlocking and fixing mechanism includes a movable bearing sleeve and a Z-shaped locking plate. The movable bearing sleeve is in the bearing sheath, and a bearing cooperation vertical rod is fixedly arranged in the movable bearing sleeve; A limit top block is fixedly arranged at the upper end of the bearing cooperation vertical rod, and a return spring and a movable limit block are sleeved on the bearing cooperation vertical rod.

[0013] Preferably, a connection bearing rod is also fixedly arranged on the movable bearing sleeve, and the connection bearing rod is inserted into the connection through hole; A connection and bearing rod is fixedly provided with a connection driving plate, and a connection spring is sleeved on the connection and bearing rod. Both ends of the connection driving plate are symmetrically hinged with movable connection rods, and the other ends of the movable connection rods are hinged with a Z-shaped locking plate.

[0014] Preferably, a plug-in locking rod is fixedly provided on the Z-shaped locking plate, and the plug-in locking rod is inserted into a connection fixing hole; The upper end of the Z-shaped locking plate is fixedly provided with a support guide rod, the support guide rod is inserted into a guiding and fitting hole, and the lower end of the Z-shaped locking plate is fixedly provided with a limiting support plate.

[0015] Preferably, the movable top closing mechanism is a movable upper closing plate, the movable upper closing plate is inserted into a bearing groove, and movable fitting strips are symmetrically and fixedly provided on both sides of the movable upper closing plate; The movable fitting strips are inserted into support moving grooves. One end of the movable upper closing plate is fixedly provided with a fitting convex strip, and driving fitting holes are symmetrically formed in the fitting convex strip.

[0016] Preferably, the movable side closing mechanism is a side closing plate. Before expansion, the side closing plate is completely inserted into a storage channel. Fitting locking holes are respectively formed in the upper sides of both ends of the side closing plate, and a fitting driving column is fixedly provided on the upper side of one end of the side closing plate close to the movable bearing plate; When the closing top plate is installed on the battery housing, the fitting driving column is inserted into the driving fitting hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, and has the following advantages: 1. During the use of the battery, when expansion is required according to the use requirements, the battery housing can be operated to make its storage space larger, so that the number of battery cells can be increased, and the expansion requirement can be realized by increasing the number of battery cells, thereby meeting the corresponding expansion requirement, and the operation is simple, convenient and fast.

[0018] 2. During expansion, the movable limit block is pushed downwards to make the movable bearing sleeve in an unlocked state, and then the movable bearing sleeve can be pushed to move. As the movable bearing sleeve moves, it will drive the Z-shaped locking plate to move, so that the movable bearing plate, the movable upper closing plate and the side closing plate are in a movable state. The movable bearing plate is laid flat to support new battery cells, and at the same time, the expansion protection plate is positioned on the movable bearing plate through the limit vertical plate, which is convenient for protecting the new battery cells.

[0019] 3. After the new battery cell is installed on the movable bearing plate, pulling the mating rib at this time can move the movable upper sealing plate, and at the same time, it will also drive the lateral sealing plate to move, so that the new battery cell can be wrapped to complete the expansion. In addition, after pulling the mating rib, the movable bearing sleeve can be released. When the insertion locking rod aligns with the mating locking hole at one end of the lateral sealing plate away from the mating driving column, under the action of the connecting spring at this time, it will drive the movable bearing sleeve to move back, so that the insertion locking rod is inserted into the aligned mating locking hole to fix the lateral sealing plate. At the same time, the limit support plate will also be inserted into the support limit hole to play a role in supporting and limiting the movable bearing plate and ensure the stability of its laying flat. Description of the Drawings

[0020] Figure 1 It is an assembly schematic diagram of the battery housing.

[0021] Figure 2 It is an assembly schematic diagram of the battery housing in the flat state of the movable bearing plate.

[0022] Figure 3 It is a structural schematic diagram of the battery housing.

[0023] Figure 4 It is an assembly schematic diagram of the battery housing and the lateral sealing plate.

[0024] Figure 5 It is a structural schematic diagram of the movable bearing plate.

[0025] Figure 6 It is a mating schematic diagram of the movable bearing plate, the expansion protection plate and the lateral sealing plate.

[0026] Figure 7 It is a first - perspective schematic diagram of the closed top plate assembly.

[0027] Figure 8 It is a second - perspective schematic diagram of the closed top plate assembly.

[0028] Figure 9 It is a first - perspective exploded schematic diagram of the closed top plate assembly.

[0029] Figure 10 It is a second - perspective exploded schematic diagram of the closed top plate assembly.

[0030] In the figure: 1. Battery housing; 11. Battery cell; 12. Matching limit hole; 13. Storage channel; 14. Outer convex bearing strip; 15. Support matching bottom block; 16. Hinge hole; 17. Connection fixing hole; 2. Movable bearing plate; 21. Hinge shaft; 22. Support limit hole; 23. Limit vertical plate; 24. Storage insertion cavity; 3. Expansion protection plate; 31. Support bottom strip; 32. Limit matching cavity; 4. Closed top plate; 40. Limit matching column; 41. Bearing sheath; 42. Connection through hole; 43. Limit channel; 44. Moving channel; 45. Convex bearing strip; 46. Guide matching hole; 47. Bearing groove; 48. Support moving groove; 5. Movable bearing sleeve; 51. Bearing matching vertical rod; 52. Limit top block; 53. Return spring; 54. Movable limit block; 55. Connection bearing rod; 56. Connection drive plate; 57. Connection spring; 58. Movable connection rod; 6. Z-shaped locking plate; 61. Insertion locking rod; 62. Support guide rod; 63. Limit support plate; 7. Movable upper sealing plate; 71. Moving matching strip; 72. Matching convex strip; 73. Driving matching hole; 8. Lateral sealing plate; 81. Matching locking hole; 82. Matching driving column. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention provides a technical solution: As Figure 1 shown, a square aluminum shell battery with expandable capacity for energy storage includes a battery housing 1 and a battery cell 11 installed in the battery housing 1. On both sides of one end of the battery housing 1, matching limit holes 12 are symmetrically opened. On both sides of the battery housing 1, storage channels 13 are symmetrically opened. At one end of the battery housing 1 away from the matching limit holes 12, a housing end closing mechanism is provided. The housing end closing mechanism can close the ends of the battery housing 1 before and after expansion. On the upper side of the battery housing 1, a housing top closing mechanism is also installed. The housing top closing mechanism can close the upper end of the battery housing 1, and an interlocking fixing mechanism is provided on the housing top closing mechanism. The interlocking fixing mechanism limits and locks the housing end closing mechanism and the housing top closing mechanism. An active top closing mechanism is also provided on the housing top closing mechanism. The active top closing mechanism closes the upper end of the battery housing 1 after expansion. An active lateral closing mechanism is inserted into the storage channels 13. The active lateral closing mechanism moves synchronously with the active top closing mechanism to realize the lateral closing of the battery housing 1 after expansion.

[0033] As Figure 2 、 Figure 3 and Figure 4 shown, on both sides of one end of the battery case 1 far away from the mating limit hole 12, convex bearing strips 14 are symmetrically and fixedly arranged; a support mating bottom block 15 is fixedly arranged at the lower end of the convex bearing strip 14, a hinge hole 16 is formed on the support mating bottom block 15, a connection fixing hole 17 is formed at the upper end of the convex bearing strip 14, the connection fixing hole 17 is communicated with the storage channel 13, and the support mating bottom block 15 supports the end closing mechanism of the case.

[0034] As Figure 1 and Figure 6 shown, the end closing mechanism of the case includes a movable bearing plate 2 and an expansion protection plate 3. Hinge shafts 21 are symmetrically arranged on both sides of the movable bearing plate 2, and the hinge shafts 21 are matched with the hinge holes 16. Before expansion, the movable bearing plate 2 is in a vertical state and contacts the end face of the battery case 1 at one end far away from the mating limit hole 12. A support limit hole 22 is formed on the movable bearing plate 2 beside the hinge shaft 21. A limit vertical plate 23 is fixedly arranged on the movable bearing plate 2, and a storage insertion cavity 24 is also formed on the movable bearing plate 2.

[0035] As Figure 1 shown, when the movable bearing plate 2 is in a vertical state, the expansion protection plate 3 is inserted into the storage insertion cavity 24, that is, the expansion protection plate 3 is in a storage state at this time. A support bottom strip 31 is fixedly arranged on the expansion protection plate 3, and a limit mating cavity 32 is arranged on the support bottom strip 31.

[0036] As Figure 2 and Figure 6 shown, after expansion, the movable bearing plate 2 is in a horizontal state, the expansion protection plate 3 is placed on the movable bearing plate 2, and the positioning of the expansion protection plate 3 is realized through the cooperation of the limit mating cavity 32 and the limit vertical plate 23. That is, the movable bearing plate 2 plays a supporting role for the new battery cell at this time, and the expansion protection plate 3 closes the end of the battery case 1.

[0037] As Figure 7 shown, the top closing mechanism of the case is a closing top plate 4. Limit mating columns 40 are symmetrically and fixedly arranged at both ends of one end of the closing top plate 4, the limit mating columns 40 are inserted into the mating limit holes 12, a bearing sheath 41 is fixedly arranged at the upper end of the closing top plate 4, a connection through hole 42 is formed at one end of the bearing sheath 41, and a limit channel 43 is formed at the upper end of the bearing sheath 41. A moving channel 44 is arranged beside the limit channel 43.

[0038] As Figure 10 and Figure 9As shown, at one end of the closed top plate 4 away from the limit fitting column 40, a convex load-bearing strip 45 is fixedly arranged. A guiding fitting hole 46 is arranged on the convex load-bearing strip 45. A load-bearing groove 47 is formed on the lower end surface of the closed top plate 4. Support moving grooves 48 are symmetrically formed on both sides inside the load-bearing groove 47.

[0039] As Figure 7 and Figure 9 shown, the interlocking fixing mechanism includes a movable load-bearing sleeve 5 and a Z-shaped locking plate 6. The movable load-bearing sleeve 5 is located in the load-bearing sheath 41. A load-bearing fitting vertical rod 51 is fixedly arranged in the movable load-bearing sleeve 5. A limit top block 52 is fixedly arranged at the upper end of the load-bearing fitting vertical rod 51. A return spring 53 and a movable limit block 54 are sleeved on the load-bearing fitting vertical rod 51. A hole matching the load-bearing fitting vertical rod 51 is arranged on the movable limit block 54 to facilitate the up and down movement of the movable limit block 54 along the load-bearing fitting vertical rod 51. The upper and lower ends of the return spring 53 are respectively fixed on the movable limit block 54 and the movable load-bearing sleeve 5. Additionally, when the movable limit block 54 limits the movable load-bearing sleeve 5, it is inserted into the limit channel 43.

[0040] As Figure 9 shown, a connecting load-bearing rod 55 is also fixedly arranged on the movable load-bearing sleeve 5. The connecting load-bearing rod 55 is inserted into the connecting through hole 42. A connecting driving plate 56 is fixedly arranged on the connecting load-bearing rod 55. A connecting spring 57 is sleeved on the connecting load-bearing rod 55. Movable connecting rods 58 are symmetrically hinged at both ends of the connecting driving plate 56. The other ends of the movable connecting rods 58 are hinged to the Z-shaped locking plate 6. Additionally, the connecting spring 57 is located in the load-bearing sheath 41, and both ends of the connecting spring 57 are respectively fixed on the movable load-bearing sleeve 5 and the inner wall of the load-bearing sheath 41.

[0041] As Figure 8 、 Figure 9 and Figure 10 shown, a plugging locking rod 61 is fixedly arranged on the Z-shaped locking plate 6. The plugging locking rod 61 is inserted into the connecting fixing hole 17. A support guiding rod 62 is fixedly arranged at the upper end of the Z-shaped locking plate 6. The support guiding rod 62 is inserted into the guiding fitting hole 46. A limit support plate 63 is fixedly arranged at the lower end of the Z-shaped locking plate 6.

[0042] When the limit support plate 63 limits the movable load-bearing plate 2 in the vertical state, it contacts its outer end surface. When the limit support plate 63 supports and limits the movable load-bearing plate 2 in the horizontal state, it is inserted into the support limit hole 22.

[0043] As Figure 8 、 Figure 9 and Figure 10As shown, the movable top closing mechanism is the movable upper closing plate 7. The movable upper closing plate 7 is inserted into the bearing groove 47. Symmetrically fixed on both sides of the movable upper closing plate 7 are moving fit strips 71. The moving fit strips 71 are inserted into the support moving grooves 48. Fixed at one end of the movable upper closing plate 7 is a fitting convex strip 72. Symmetrically formed in the fitting convex strip 72 are driving fitting holes 73.

[0044] As Figure 1 and Figure 2 shown, the movable side closing mechanism is the side closing plate 8. Before expansion, the side closing plate 8 is completely inserted into the storage channel 13. Respectively formed in the upper sides of both ends of the side closing plate 8 are fitting locking holes 81. Fixed on the upper side of one end of the side closing plate 8 close to the movable bearing plate 2 is a fitting driving column 82. When the closing top plate 4 is installed on the battery housing 1, the fitting driving column 82 is inserted into the driving fitting hole 73. Additionally, when the insertion locking rod 61 fixes the side closing plate 8, it is inserted into the fitting locking hole 81.

[0045] Before expansion, the plug-in locking rod 61 passes through the connecting and fixing hole 17 and is plugged into the matching locking hole 81 near one end of the movable bearing plate 2. At this time, the plug-in locking rod 61 and the connecting and fixing hole 17 cooperate to achieve the fixation of the closed top plate 4. When expansion is required, the expansion guard plate 3 is pulled out of the storage cavity 24, and then the movable limit block 54 is pushed downward to make it exit the limit channel 43, and then the movable bearing sleeve 5 is pushed into the inside of the bearing sleeve 41. In this way, under the action of the movable connecting rod 58, the Z-shaped locking plate 6 will be driven to move away from the battery housing 1, so that the plug-in locking rod 61 exits the matching locking The hole 81 also drives the limiting support plate 63 to separate from the movable bearing plate 2, so that the limiting support plate 63 will no longer limit the movable bearing plate 2. At this time, the movable bearing plate 2 can be rotated downward to make it horizontal, and the new battery cell can be supported by the movable bearing plate 2 to complete the expansion. Then, the expansion guard plate 3 is positioned on the movable bearing plate 2 through the cooperation of the limiting matching cavity 32 and the limiting vertical plate 23. After that, the matching convex strip 72 can be pulled to drive the movable upper sealing plate 7 to move, and the lateral closing plate 8 will also be driven to move to the outside of the storage channel 13. After pulling the matching convex strip 72, the movable upper sealing plate 7 can be released. The plug-in locking rod 61 of the movable bearing sleeve 5 at this time abuts against the lateral closing plate 8 until the movable upper closing plate 7 and the lateral closing plate 8 are in contact with the expansion guard plate 3. At this time, the movable upper closing plate 7 is in contact with the upper end surface of the expansion guard plate 3, and the lateral closing plate 8 is pressed on the supporting bottom bar 31. Under the action of the two, the expansion guard plate 3 is fixed, and the two are closed together with the expansion guard plate 3 to form a closed space to protect the battery cell 11. At this time, the plug-in locking rod 61 is aligned with the matching locking hole 81 on the lateral closing plate 8 away from the end of the movable bearing plate 2, so that the movable upper closing plate 7 is driven by the action of the connecting spring 57. The bearing sleeve 5 is reset, so that the plug-in locking rod 61 is inserted into the matching locking hole 81 that is aligned with it, thereby fixing the lateral closing plate 8 and the movable upper closing plate 7. At the same time, the limiting support plate 63 is inserted into the supporting limiting hole 22 at this time, thereby realizing the limiting support for the movable bearing plate 2, so that it is in a stable horizontal state. After the movable bearing sleeve 5 is reset, the movable limiting block 54 is again inserted into the limiting channel 43 under the action of the reset spring 53, thereby realizing the limiting of the movable bearing sleeve 5. The shape of the battery housing 1 can be quickly changed, and the capacity expansion operation can be performed according to the use requirements, which is very convenient.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An expandable square aluminum shell battery for energy storage, comprising a battery shell and a battery cell installed in the battery shell, characterized in that: Matching limiting holes are symmetrically provided on both sides of one end of the battery housing, and storage channels are symmetrically provided on both sides of the battery housing; A shell end sealing mechanism is provided on one end of the battery shell away from the matching limiting hole, and the shell end sealing mechanism can seal the end of the battery shell before and after capacity expansion; A shell top closing mechanism is also installed on the upper side of the battery shell, and the shell top closing mechanism can close the upper end of the battery shell, and an interlocking fixing mechanism is provided on the shell top closing mechanism, and the interlocking fixing mechanism limits and locks the shell end closing mechanism and the shell top closing mechanism; A movable top closing mechanism is also provided on the shell top closing mechanism, and the movable top closing mechanism closes the upper end of the battery shell after the capacity expansion; A movable lateral closing mechanism is inserted in the storage channel, and the movable lateral closing mechanism moves synchronously with the movable top closing mechanism to achieve lateral closing of the battery housing after capacity expansion.

2. The expandable square aluminum shell battery for energy storage according to claim 1, characterized in that: The battery housing has convex bearing bars symmetrically fixedly disposed on both sides of one end away from the matching limiting hole; A supporting and matching bottom block is fixedly arranged at the lower end of the outer convex bearing strip, a hinge hole is opened on the supporting and matching bottom block, and a connecting and fixing hole is opened at the upper end of the outer convex bearing strip; The connecting and fixing hole is connected with the receiving channel, and the supporting and matching bottom block supports the shell end closing mechanism.

3. The expandable square aluminum shell battery for energy storage according to claim 2, characterized in that: The shell end closing mechanism comprises a movable bearing plate and an expansion guard plate, and hinge shafts are symmetrically arranged on both sides of the movable bearing plate, and the hinge shafts cooperate with the hinge holes; Before the expansion, the movable bearing plate is in a vertical state and contacts the end surface of the battery housing away from the matching limiting hole; A support limit hole is provided on the movable bearing plate beside the hinge shaft, a limit stand is fixedly arranged on the movable bearing plate, and a receiving insertion cavity is also provided on the movable bearing plate.

4. The expandable square aluminum shell battery for energy storage according to claim 3, characterized in that: When the movable bearing plate is in a vertical state, the expansion guard plate is plugged into the receiving cavity; A supporting bottom bar is fixedly arranged on the expansion guard plate, and a limited position matching cavity is arranged on the supporting bottom bar.

5. The expandable square aluminum shell battery for energy storage according to claim 4, characterized in that: After the expansion, the movable bearing plate is in a horizontal state, the expansion guard plate is placed on the movable bearing plate, and the positioning of the expansion guard plate is achieved through the cooperation of the limiting matching cavity and the limiting vertical plate.

6. The expandable square aluminum shell battery for energy storage according to claim 5, characterized in that: The top closing mechanism of the shell is a closed top plate, and two sides of one end of the closed top plate are symmetrically fixed with limited matching columns, and the limited matching columns are inserted into the matching limited holes; A bearing sleeve is fixedly arranged on the upper end of the closed top plate, a connecting through hole is opened at one end of the bearing sleeve, and a limiting channel is opened at the upper end of the bearing sleeve, and a moving channel is arranged on one side of the limiting channel.

7. The expandable square aluminum shell battery for energy storage according to claim 6, characterized in that: A protruding bearing strip is fixedly provided on one end of the closed top plate away from the limiting matching column, and a guiding matching hole is provided on the protruding bearing strip; A bearing groove is provided on the lower end surface of the closed top plate, and supporting movable grooves are symmetrically provided on both sides of the bearing groove.

8. The expandable square aluminum shell battery for energy storage according to claim 7, characterized in that: The interlocking fixing mechanism comprises a movable bearing sleeve and a Z-shaped locking plate, wherein the movable bearing sleeve is in the bearing sleeve, and a bearing matching vertical rod is fixedly arranged in the movable bearing sleeve; A limit top block is fixedly arranged on the upper end of the load-bearing matching vertical rod, and a return spring and a movable limit block are sleeved on the load-bearing matching vertical rod.

9. The expandable square aluminum shell battery for energy storage according to claim 8, characterized in that: The movable bearing sleeve is also fixedly provided with a connecting bearing rod, and the connecting bearing rod is inserted into the connecting through hole; A connecting drive plate is fixedly arranged on the connecting bearing rod, and a connecting spring is sleeved on the connecting bearing rod. The two ends of the connecting drive plate are symmetrically hinged with movable connecting rods, and the other end of the movable connecting rod is hinged with a Z-shaped locking plate.

10. The expandable square aluminum shell battery for energy storage according to claim 9, characterized in that: The Z-shaped locking plate is fixedly provided with a plug-in locking rod, and the plug-in locking rod is plugged into the connecting fixing hole; A support guide rod is fixedly provided at the upper end of the Z-shaped locking plate, and the support guide rod is inserted into the guide matching hole, and a limited support plate is fixedly provided at the lower end of the Z-shaped locking plate.

11. The expandable square aluminum shell battery for energy storage according to claim 10, characterized in that: The movable top closing mechanism is a movable upper sealing plate, which is inserted into the bearing groove, and movable matching strips are symmetrically fixedly arranged on both sides of the movable upper sealing plate; The movable matching strip is inserted in the supporting movable groove, and a matching convex strip is fixedly provided at one end of the movable upper sealing plate, and driving matching holes are symmetrically opened on the matching convex strip.

12. The expandable square aluminum shell battery for energy storage according to claim 11, characterized in that: The movable lateral closing mechanism is a lateral closing plate, which is completely inserted into the storage channel before expansion, and the upper sides of both ends of the lateral closing plate are respectively provided with matching locking holes, and a matching driving column is fixedly provided on the upper side of one end of the lateral closing plate close to the movable bearing plate; When the closed top plate is installed on the battery housing, the matching driving column is inserted into the driving matching hole.

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