A variable capacity expandable energy storage battery pack for an energy storage station

Abstract

This invention relates to the field of energy storage battery packs, specifically a variable capacity expandable energy storage battery pack for an energy storage station. It includes a limiting mechanism for limiting and fixing the energy storage battery; an adjustment mechanism for adjusting and preparing for subsequent battery capacity expansion; and an expansion mechanism for variable capacity expansion of the energy storage battery pack. A cover plate is installed on the outside of the limiting mechanism, and an energy storage component is disposed below the cover plate. A fixing frame is disposed below the limiting mechanism. In this variable capacity expandable energy storage battery pack, a plug is used to press a bent plate inside a bonding block, causing a limiting block on the other end of the bent plate to extend outward from the bonding block, thus fixing and limiting the placed energy storage component. Furthermore, the four-corner limiting fixing method not only ensures that the energy storage component cannot fall off but also ensures complete heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of energy storage battery pack technology, specifically to a variable capacity expandable energy storage battery pack for an energy storage station. Background Technology

[0002] A battery storage system is a system composed of multiple battery modules. The battery modules can be quickly disassembled and reassembled to replace the battery or change the energy storage capacity, which facilitates battery maintenance and replacement and adapts to different energy storage needs.

[0003] For existing energy storage battery packs, most of the mounting brackets used for the battery packs are fixed, which can only assemble a maximum of two batteries. This results in the number of batteries in the energy storage battery pack remaining unchanged, and multiple batteries cannot be added externally. Consequently, the energy storage capacity of the energy storage battery pack remains constant, and it is impossible to expand the energy storage capacity variably. Summary of the Invention

[0004] The present invention provides a variable capacity expandable energy storage battery pack for an energy storage station to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a variable capacity expandable energy storage battery pack for an energy storage station, including a limiting mechanism for limiting and fixing the energy storage battery;

[0006] The adjustment mechanism is used for adjusting and preparing for subsequent battery capacity expansion.

[0007] Capacity expansion mechanism, used for variable capacity expansion of energy storage battery packs;

[0008] A cover plate is installed on the outside of the limiting mechanism, an energy storage component is provided below the cover plate, a fixed frame is provided below the limiting mechanism, the adjusting mechanism is installed on the fixed frame, and the outside of the expansion mechanism is connected to the limiting mechanism and the fixed frame respectively.

[0009] A support frame is provided below the energy storage device. Both ends of the support frame are symmetrically connected to connecting plates. There are several support frames and connecting plates. The end of the connecting plate away from the support frame is connected to the fixed frame and the limiting mechanism, respectively.

[0010] Preferably, the adjustment mechanism includes a double-headed bar, with rod sleeves symmetrically connected to both ends of the double-headed bar. A through rod is fixedly connected to the center of the rod sleeve, and a tension spring is fixedly connected to the side of the through rod near the fixed frame. The end of the tension spring away from the rod sleeve is fixedly connected to the outside of the fixed frame.

[0011] Preferably, a first magnet is fixedly connected to the end of the insertion rod away from the rod sleeve, and a second magnet is provided at the end of the first magnet away from the insertion rod, wherein the first magnet and the second magnet maintain an attractive relationship, and a blocking disk is fixedly connected to the end of the second magnet away from the first magnet.

[0012] Preferably, an expansion rod is fixedly connected to the outer side of the barrier plate, the expansion rod is slidably adapted to the inside of the fixed frame, and a limiting plate is provided on the side of the expansion rod away from the fixed frame, the limiting plate being fixedly connected to the inner side of the fixed frame.

[0013] Preferably, the limiting mechanism includes a shorting rod, the outer end face of which is fixedly connected to the expansion rod, an outer plate is fixedly connected to the end of the shorting rod away from the expansion rod, a fixing rod is fixedly connected to the center of the outer plate, a rod sleeve is slidably fitted to the outer side of the fixing rod, an extension plate is fixedly connected to the end of the fixing rod away from the outer plate, and electric push rods are symmetrically connected to both sides of the extension plate.

[0014] Preferably, trapezoidal blocks are symmetrically connected to both ends of the rod sleeve. The end of the trapezoidal block away from the outer plate is fixedly connected to the electric push rod. The end of the trapezoidal block away from the rod sleeve is fitted with an inclined rod. A limit component is provided at the end of the inclined rod away from the trapezoidal block. A fixed rail is slidably fitted to the side of the inclined rod near the outer plate. The fixed rail is fixedly connected to the outside of the outer plate. A return spring is fixedly connected to the outer end face of the fixed rail. An inner plate is fixedly connected to the end of the return spring away from the fixed rail. The outer side of the inner plate is fixedly connected to the inclined rod.

[0015] Preferably, the limiting component includes a plurality of bonding blocks, wherein the bonding blocks are fixedly connected to the outside of the fixing frame and the expansion rod respectively, a plug is inserted into the inside of the bonding block, the end of the plug away from the bonding block is fixedly connected to the inclined rod, and a bending plate is extruded and adapted to the outside of the plug.

[0016] Preferably, the bending plate is slidably adapted inside the bonding block, and a limiting block is fixedly connected to the end of the bending plate away from the plug, wherein the limiting block is used to limit the energy storage device, and a spring is fixedly connected to the outside of the bending plate, and the end of the spring away from the bending plate is fixedly connected to the inside of the bonding block.

[0017] Preferably, the expansion mechanism includes a square plate, which is fixedly connected to the outside of the fixed frame. A bent rod is fixedly connected to the end of the square plate away from the fixed frame. A bidirectional component is fixedly connected to the end of the bent rod away from the square plate. A first round bar and a second round bar are respectively inserted into the two ends of the bidirectional component. A first sleeve plate is fixedly connected to the end of the first round bar away from the bidirectional component. A pneumatic rod is fixedly connected to the outer end face of the first sleeve plate. The end of the pneumatic rod away from the first sleeve plate is fixedly connected to the square plate.

[0018] Preferably, a first wire sleeve is fixedly connected inside the first sleeve plate, and expansion components are installed at both the upper and lower ends of the first wire sleeve. The number of expansion components is several, and a second wire sleeve is connected to the outside of the expansion components. A second sleeve plate is fixedly connected to the outside of the second wire sleeve, and the outside of the second sleeve plate is fixedly connected to the second round bar.

[0019] Preferably, the capacity expansion component includes a connecting sleeve, which is installed on the outside of the energy storage device. A semi-circular sleeve is fixedly connected to the end of the connecting sleeve away from the energy storage device. Both the connecting sleeve and the semi-circular sleeve have electrical connectors inside. Electrical wires are connected inside the electrical connectors. The electrical wires are located inside the second electrical wire sleeve. A fixing sleeve is fixedly connected to the outside of the second electrical wire sleeve. Fitting plates are fixedly connected to both the upper and lower sides of the fixing sleeve. The end of the fitting plate away from the fixing sleeve fits into the semi-circular sleeve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By pressing the bent plate inside the bonding block through the plug, a limiting block on the other end of the bent plate extends outward from the bonding block, thus fixing and limiting the placement of the energy storage device. Furthermore, the four-corner limiting method not only prevents the energy storage device from falling off but also ensures complete heat dissipation.

[0022] 2. The attraction between magnets one and two serves to limit and support the expansion rods within the fixed frame, while also preparing for subsequent power expansion. Then, a third energy storage device is placed within the space enclosed by the four expansion rods and the energy storage device, thereby increasing the number of batteries inside the battery pack.

[0023] 3. The electrical wiring inside the No. 2 wire sleeve will be connected and adapted to the electrical connector. The same applies to the components associated with the No. 1 wire sleeve. At this time, the two fixed energy storage components will be electrically connected. If the energy storage battery pack has been expanded, then three energy storage components will be connected, thereby achieving the function of expanding the power supply capacity. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external structure of a variable capacity expandable energy storage battery pack for an energy storage station according to the present invention.

[0025] Figure 2 This is a rear view schematic diagram of the overall structure of the present invention.

[0026] Figure 3 This is a bottom view of the overall components of the present invention.

[0027] Figure 4 For the present invention Figure 3 A magnified structural diagram of point A in the middle.

[0028] Figure 5 This is a cross-sectional view of the adjustment mechanism of the present invention.

[0029] Figure 6 This is a half-sectional schematic diagram of the limiting mechanism of the present invention.

[0030] Figure 7 For the present invention Figure 6 A magnified structural diagram at point B in the middle.

[0031] Figure 8 For the present invention Figure 6 A schematic diagram of the structure at point C.

[0032] Figure 9 This is a cross-sectional view of the limiting component of the present invention.

[0033] Figure 10 For the present invention Figure 9 A magnified structural diagram at point D.

[0034] Figure 11 This is a schematic diagram of the expansion mechanism of the present invention.

[0035] Figure 12 This is a schematic diagram of the structure of some components of the expansion mechanism of the present invention.

[0036] Figure 13 This is a cross-sectional view of the expansion component of the present invention.

[0037] Figure 14 For the present invention Figure 13 A magnified structural diagram at point E in the middle.

[0038] In the diagram: 1. Fixed frame; 2. Energy storage component; 3. Limiting mechanism; 4. Cover plate; 5. Adjusting mechanism; 6. Expansion mechanism; 7. Support frame; 8. Connecting plate; 51. Double-headed strip; 52. Rod sleeve; 53. Inserting rod; 54. Tension spring; 55. Magnet No. 1; 56. Magnet No. 2; 57. Barrier plate; 58. Expansion rod; 59. Limiting plate; 31. Shortening rod; 32. Outer plate; 33. Fixed rod; 34. Rod sliding sleeve; 35. Trapezoidal block; 36. Electric push rod; 37. Extension plate; 38. Inclined rod; 39. Fixed rail; 30. Return spring; 301 302. Internal plate; 302. Limiting component; 3021. Adhesive block; 3022. Plug; 3023. Bending plate; 3024. Limiting block; 3025. Spring; 61. Square plate; 62. Bending rod; 63. Two-way component; 64. Round bar No. 1; 65. Round bar No. 2; 66. Sleeve No. 1; 67. Pneumatic rod; 68. Wire sleeve No. 1; 69. Expansion component; 60. Sleeve No. 2; 601. Wire sleeve No. 2; 691. Connecting sleeve; 692. Semi-circular sleeve; 693. Electrical connector; 694. Electrical wire; 695. Fixing sleeve; 696. Fitting plate. Detailed Implementation

[0039] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] Please see Figures 1 to 14 The present invention provides a technical solution: such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a limiting mechanism 3, which is used to limit and fix the energy storage battery;

[0041] Adjustment mechanism 5 is used for adjustment and pre-preparation of subsequent battery capacity expansion;

[0042] Expansion mechanism 6 is used for variable expansion processing of energy storage battery packs;

[0043] A cover plate 4 is installed on the outside of the limiting mechanism 3, an energy storage component 2 is provided below the cover plate 4, a fixed frame 1 is provided below the limiting mechanism 3, an adjustment mechanism 5 is installed on the fixed frame 1, and the outside of the expansion mechanism 6 is connected to the limiting mechanism 3 and the fixed frame 1 respectively.

[0044] A support frame 7 is provided below the energy storage device 2. Both ends of the support frame 7 are symmetrically connected with connecting plates 8. There are several support frames 7 and connecting plates 8. The end of the connecting plate 8 away from the support frame 7 is connected to the fixed frame 1 and the limiting mechanism 3 respectively.

[0045] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the adjustment mechanism 5 includes a double-headed bar 51, with rod sleeves 52 symmetrically connected to both ends of the double-headed bar 51. A through-rod 53 is fixedly connected to the center of the rod sleeve 52. A tension spring 54 is fixedly connected to the side of the through-rod 53 closest to the fixed frame 1. The end of the tension spring 54 away from the rod sleeve 52 is fixedly connected to the outside of the fixed frame 1. A first magnet 55 is fixedly connected to the end of the through-rod 53 away from the rod sleeve 52. A second magnet 56 is provided at the end of the first magnet 55 away from the through-rod 53. The first magnet 55 and the second magnet... The two magnets 56 maintain an attractive relationship. A blocking disk 57 is fixedly connected to the end of the second magnet 56 away from the first magnet 55. An expansion rod 58 is fixedly connected to the outside of the blocking disk 57. When it is necessary to expand the power transmission capacity of the entire energy storage battery pack, the operator needs to manually pull the double-headed bar 51 outwards first, and then pull the expansion rod 58 upwards from the fixed frame 1. Initially, under the action of the tension spring 54, the insertion rod 53 will insert into the interior of the fixed frame 1, thus serving to accommodate and limit the expansion rod 58. The expansion rod 58 slides within the fixed frame 1. A retaining plate 59 is provided on the side of the expansion rod 58 away from the fixed frame 1, and the retaining plate 59 is fixedly connected to the inside of the fixed frame 1. Following this, the limiting mechanism 3 connected to the expansion rod 58 also moves upward. When the expansion rod 58 moves upward a certain distance, and the second magnet 56 located inside the expansion rod 58 and the first magnet 55 connected to the inner end face of the insertion rod 53 are at the same horizontal plane, because the second magnet 56 and the first magnet 55 maintain an attractive relationship, the rod sleeve 52 fixedly connected to the outside of the insertion rod 53 will compress the tension spring 54. The insertion rod 53 will then pass through the interior of the fixed frame 1 and the expansion rod 58, causing the two magnets to attract each other. This serves to limit and support the expansion rod 58 inside the fixed frame 1, and also prepares for subsequent power expansion. Then, the third energy storage component 2 is placed within the space enclosed by the four expansion rods 58 and the energy storage component 2 to increase the number of batteries inside the battery pack.

[0046] The limiting mechanism 3 includes a shorting rod 31, the outer end of which is fixedly connected to the expansion rod 58. An outer plate 32 is fixedly connected to the end of the shorting rod 31 away from the expansion rod 58. A fixing rod 33 is fixedly connected to the center of the outer plate 32. A rod sleeve 34 is slidably fitted to the outer side of the fixing rod 33. An extension plate 37 is fixedly connected to the end of the fixing rod 33 away from the outer plate 32. Electric push rods 36 are symmetrically connected to both sides of the extension plate 37. Trapezoidal blocks 35 are symmetrically connected to both ends of the rod sleeve 34. By pushing the energy storage component 2 from the rear of the device along the top of the support frame 7 into the device (where the lower two layers of the device can be fixedly fitted with two energy storage components 2), the electric push rod 36 is activated, causing the trapezoidal block 35 connected to its telescopic end to move towards the outer plate 32. The trapezoidal block 35 is connected to the rod sleeve 34, which is slidably fitted onto the fixed rod 33. The fixed rod 33 and the rod sleeve 34 limit the sliding of the trapezoidal block 35 to prevent displacement. The end of the trapezoidal block 35 away from the outer plate 32 is fixedly connected to the electric push rod 36. The end of the trapezoidal block 35 away from the rod sleeve 34 is fitted with an inclined rod 38. The end of the inclined rod 38 away from the trapezoidal block 35 is provided with a limit component 302. The side of the inclined rod 38 near the outer plate 32 is slidably fitted with a fixed rail 39. The fixed rail 39 is fixedly connected to the outside of the outer plate 32. A return spring 30 is fixedly connected to the outer end face of the fixed rail 39. An inner plate 301 is fixedly connected to the end of the return spring 30 away from the fixed rail 39. The outer side of the inner plate 301 is fixedly connected to the inclined rod 38. Therefore, the trapezoidal block 35 will move in a direction perpendicular to the outer plate 32 and squeeze the inclined rod 38. The contact surfaces between the trapezoidal block 35 and the inclined rod 38 are both inclined surfaces. The squeezed inclined rod 38 will move outward along the fixed rail 39 and stretch the return spring 30. The return spring 30 plays the role of restoring the inclined rod 38.

[0047] The limiting component 302 includes several bonding blocks 3021, which are fixedly connected to the outside of the fixing frame 1 and the expansion rod 58. A through plug 3022 is inserted into the inside of the bonding block 3021. The end of the through plug 3022 away from the bonding block 3021 is fixedly connected to the inclined rod 38. A bending plate 3023 is pressed and adapted to the outside of the through plug 3022. The bending plate 3023 is slidably adapted to the inside of the bonding block 3021. A limiting block 3024 is fixedly connected to the end of the bending plate 3023 away from the through plug 3022. The limiting block 3024 is used to limit the energy storage device 2. A spring 3025 is fixedly connected to the outside of the bending plate 3023. The end of the spring 3025 away from the bending plate 3023 is fixedly connected to the inside of the bonding block 3021. Subsequently, the plug 3022, connected to the other end of the inclined rod 38, is inserted into the interior of the bonding block 3021, pressing against the bent plate 3023 inside the bonding block 3021. Since the contact surfaces between the plug 3022 and the bent plate 3023 are both inclined, the limiting block 3024 on the other end of the bent plate 3023 extends outward from the bonding block 3021, thus fixing and limiting the placement of the energy storage device 2. Furthermore, the four-corner limiting fixing method not only ensures that the energy storage device 2 cannot fall off but also ensures complete heat dissipation.

[0048] like Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, the expansion mechanism 6 includes a square plate 61, which is fixedly connected to the outside of the fixed frame 1. A bent rod 62 is fixedly connected to one end of the square plate 61 away from the fixed frame 1. A bidirectional member 63 is fixedly connected to one end of the bent rod 62 away from the square plate 61. A first round bar 64 and a second round bar 65 are respectively inserted into the two ends of the bidirectional member 63. A first sleeve plate 66 is fixedly connected to one end of the first round bar 64 away from the bidirectional member 63. An air valve is fixedly connected to the outer end face of the first sleeve plate 66. The pneumatic rod 67 is fixedly connected to the square plate 61 at one end away from the first sleeve plate 66. The first wire sleeve 68 is fixedly connected inside the first sleeve plate 66. Expansion components 69 are installed at both the upper and lower ends of the first wire sleeve 68. There are several expansion components 69. The second wire sleeve 601 is connected to the outside of the expansion components 69. The second sleeve plate 60 is fixedly connected to the outside of the second wire sleeve 601. The outside of the second sleeve plate 60 is fixedly connected to the second round bar 65. Whether the energy storage battery pack has been expanded or not, the pneumatic rod 67 can be activated, causing the first sleeve plate 66 connected to the telescopic end of the pneumatic rod 67 to move to the left. The outer side of the first sleeve plate 66 is connected to the first round bar 64, and the other end of the first round bar 64 is inserted into the bidirectional member 63. Therefore, when the first round bar 64 is inserted into the bidirectional member 63, the second round bar 65 on the other end of the bidirectional member 63 will also extend into the bidirectional member 63. Ultimately, the first wire sleeve 68 installed in the first sleeve plate 66 and the second wire sleeve 601 installed in the second sleeve plate 60 will move in opposite directions and towards the center. The bidirectional member 63 is similar to a hydraulic synchronous telescopic device.

[0049] The expansion component 69 includes a connecting sleeve 691, which is installed on the outside of the energy storage component 2. A semi-circular sleeve 692 is fixedly connected to the end of the connecting sleeve 691 away from the energy storage component 2. Both the connecting sleeve 691 and the semi-circular sleeve 692 are provided with electrical connectors 693. An electrical wire 694 is connected inside the electrical connector 693. The electrical wire 694 is located inside the second wire sleeve 601. A fixing sleeve 695 is fixedly connected to the outside of the second wire sleeve 601. A fitting plate 696 is fixedly connected to both the upper and lower sides of the fixing sleeve 695. The end of the fitting plate 696 away from the fixing sleeve 695 is fitted with the semi-circular sleeve 692. The fixing sleeve 695, which is fixedly connected to the outside of the second wire sleeve 601, will be embedded into the interior of the semi-circular sleeve 692 with the fitting plate 696. At the same time, the electrical connection 694 set inside the second wire sleeve 601 will be connected and adapted to the electrical connector 693. The components associated with the first wire sleeve 68 are similarly connected. At this time, the two fixed energy storage components 2 will be electrically connected. If the energy storage battery pack is expanded, then three energy storage components 2 will be connected, thereby achieving the function of expanding the power supply.

[0050] In use, the energy storage component 2 is first pushed into the device from the rear along the top of the support frame 7. The lower two layers of the device are used to fix two energy storage components 2. Then, the electric push rod 36 is activated, causing the trapezoidal block 35, connected to its telescopic end, to move towards the outer plate 32. The trapezoidal block 35 is connected to the rod sleeve 34, which is slidably fitted onto the fixed rod 33. Therefore, the trapezoidal block 35 moves perpendicular to the outer plate 32. The inclined rod 38 is compressed, and the compressed inclined rod 38 will move outward along the fixed rail 39 and stretch the return spring 30. Then the plug 3022 connected to the other end of the inclined rod 38 will be inserted into the interior of the bonding block 3021 and will compress the bending plate 3023 inside the bonding block 3021. This will cause the limiting block 3024 on the other end of the bending plate 3023 to extend outward from the bonding block 3021, thereby fixing and limiting the energy storage device 2 after it is placed.

[0051] When it is necessary to expand the power transmission capacity of the entire energy storage battery pack, the operator needs to manually pull the expansion rod 58 upward from the fixed frame 1. The limiting mechanism 3 connected to the expansion rod 58 will also move upward. When the expansion rod 58 moves upward a certain distance, and the second magnet 56 set inside the expansion rod 58 and the first magnet 55 connected to the inner end face of the insertion rod 53 are at the same horizontal plane, because the second magnet 56 and the first magnet 55 maintain an attraction relationship, the rod sleeve 52 fixedly connected to the outside of the insertion rod 53 will compress the tension spring 54. The insertion rod 53 will then pass through the fixed frame 1 and the interior of the expansion rod 58, causing the two magnets to attract each other, thus achieving the limiting and support treatment of the expansion rod 58 inside the fixed frame 1. Then, the third energy storage component 2 is placed in the space enclosed by the four expansion rods 58 and the energy storage component 2 to increase the number of batteries inside the battery pack.

[0052] Whether the energy storage battery pack has been expanded or not, the pneumatic rod 67 can be activated, causing the first sleeve plate 66 connected to the telescopic end of the pneumatic rod 67 to move to the left. The outer side of the first sleeve plate 66 is connected to the first round bar 64, and the other end of the first round bar 64 is inserted into the bidirectional member 63. Therefore, when the first round bar 64 is inserted into the bidirectional member 63, the second round bar 65 on the other end of the bidirectional member 63 will also extend into the bidirectional member 63. Ultimately, the first wire sleeve 68 installed in the first sleeve plate 66 and the second wire sleeve 601 installed in the second sleeve plate 60 will move in the opposite direction and towards the center. The fixing sleeve 695, which is fixedly connected to the outside of the second wire sleeve 601, will be embedded into the interior of the semi-circular sleeve 692 with the fitting plate 696. At the same time, the electrical connection 694 set inside the second wire sleeve 601 will be connected and adapted to the electrical connector 693. The components associated with the first wire sleeve 68 are similarly connected. At this time, the two fixed energy storage components 2 will be electrically connected. If the energy storage battery pack is expanded, then three energy storage components 2 will be connected to achieve the expansion of power capacity.

[0053] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A variable capacity expandable energy storage battery pack for an energy storage station, characterized in that, include: The limiting mechanism (3) is used to limit and fix the energy storage battery; Adjustment mechanism (5) is used for adjustment and pre-preparation of subsequent battery capacity expansion; The capacity expansion mechanism (6) is used for the variable capacity expansion of the energy storage battery pack; A cover plate (4) is installed on the outside of the limiting mechanism (3), an energy storage component (2) is provided below the cover plate (4), a fixed frame (1) is provided below the limiting mechanism (3), the adjusting mechanism (5) is installed on the fixed frame (1), and the outer side of the expansion mechanism (6) is connected to the limiting mechanism (3) and the fixed frame (1) respectively. A support frame (7) is provided below the energy storage device (2). Both ends of the support frame (7) are symmetrically connected with connecting plates (8). There are several support frames (7) and connecting plates (8). The end of the connecting plate (8) away from the support frame (7) is connected to the fixed frame (1) and the limiting mechanism (3) respectively. The adjustment mechanism (5) includes a double-headed bar (51), with rod sleeves (52) symmetrically connected to both ends of the double-headed bar (51). A through rod (53) is fixedly connected to the center of the rod sleeve (52). A tension spring (54) is fixedly connected to the side of the through rod (53) near the fixed frame (1). The end of the tension spring (54) away from the rod sleeve (52) is fixedly connected to the outside of the fixed frame (1). The end of the insert rod (53) away from the rod sleeve (52) is fixedly connected to a first magnet (55), and the end of the first magnet (55) away from the insert rod (53) is provided with a second magnet (56). The first magnet (55) and the second magnet (56) maintain an attractive relationship. The end of the second magnet (56) away from the first magnet (55) is fixedly connected to a blocking disk (57). An expansion rod (58) is fixedly connected to the outside of the barrier plate (57). The expansion rod (58) is slidably adapted to the inside of the fixed frame (1). A retaining plate (59) is provided on the side of the expansion rod (58) away from the fixed frame (1). The retaining plate (59) is fixedly connected to the inside of the fixed frame (1). The expansion mechanism (6) includes a square plate (61), which is fixedly connected to the outside of the fixed frame (1). A bent rod (62) is fixedly connected to one end of the square plate (61) away from the fixed frame (1). A two-way component (63) is fixedly connected to one end of the bent rod (62) away from the square plate (61). A first round bar (64) and a second round bar (65) are respectively inserted into the two ends of the two-way component (63). A first sleeve plate (66) is fixedly connected to one end of the first round bar (64) away from the two-way component (63). A pneumatic rod (67) is fixedly connected to the outer end face of the first sleeve plate (66). The end of the pneumatic rod (67) away from the first sleeve plate (66) is fixedly connected to the square plate (61). The first sleeve plate (66) is fixedly connected to the first wire sleeve (68). Both the upper and lower ends of the first wire sleeve (68) are equipped with expansion components (69). There are several expansion components (69). The outer side of the expansion components (69) is connected to the second wire sleeve (601). The outer side of the second wire sleeve (601) is fixedly connected to the second sleeve plate (60). The outer side of the second sleeve plate (60) is fixedly connected to the second round bar (65).

2. The variable capacity expandable energy storage battery pack for an energy storage station according to claim 1, characterized in that: The limiting mechanism (3) includes a shorting rod (31), the outer end face of which is fixedly connected to the expansion rod (58), and an outer plate (32) is fixedly connected to the end of the shorting rod (31) away from the expansion rod (58). A fixing rod (33) is fixedly connected to the center of the outer plate (32), and a rod sleeve (34) is slidably adapted to the outer side of the fixing rod (33). An extension plate (37) is fixedly connected to the end of the fixing rod (33) away from the outer plate (32), and electric push rods (36) are symmetrically connected to both sides of the extension plate (37).

3. The variable capacity expandable energy storage battery pack for an energy storage station according to claim 2, characterized in that: Both ends of the rod sleeve (34) are symmetrically connected with trapezoidal blocks (35). The end of the trapezoidal block (35) away from the outer plate (32) is fixedly connected to the electric push rod (36). The end of the trapezoidal block (35) away from the rod sleeve (34) is fitted with an inclined rod (38). The end of the inclined rod (38) away from the trapezoidal block (35) is provided with a limit component (302). The side of the inclined rod (38) near the outer plate (32) is slidably fitted with a fixed rail (39). The fixed rail (39) is fixedly connected to the outside of the outer plate (32). The outer end face of the fixed rail (39) is fixedly connected with a return spring (30). The end of the return spring (30) away from the fixed rail (39) is fixedly connected with an inner plate (301). The outer side of the inner plate (301) is fixedly connected to the inclined rod (38).

4. A variable capacity expandable energy storage battery pack for an energy storage station according to claim 3, characterized in that: The limiting component (302) includes a bonding block (3021), wherein there are several bonding blocks (3021), and the bonding blocks (3021) are fixedly connected to the outside of the fixed frame (1) and the expansion rod (58). A plug (3022) is inserted into the inside of the bonding block (3021), and the end of the plug (3022) away from the bonding block (3021) is fixedly connected to the inclined rod (38). A bending plate (3023) is squeezed and adapted on the outside of the plug (3022).

5. A variable capacity expandable energy storage battery pack for an energy storage station according to claim 4, characterized in that: The bending plate (3023) is slidably adapted to the inside of the bonding block (3021). The end of the bending plate (3023) away from the plug (3022) is fixedly connected to a limiting block (3024), wherein the limiting block (3024) is used to limit the energy storage device (2). A spring (3025) is fixedly connected to the outside of the bending plate (3023), and the end of the spring (3025) away from the bending plate (3023) is fixedly connected to the inside of the bonding block (3021).

6. A variable capacity expandable energy storage battery pack for an energy storage station according to claim 1, characterized in that: The expansion component (69) includes a connecting sleeve (691), which is installed on the outside of the energy storage unit (2). A semi-circular sleeve (692) is fixedly connected to one end of the connecting sleeve (691) away from the energy storage unit (2). Both the connecting sleeve (691) and the semi-circular sleeve (692) are provided with electrical connectors (693). An electrical wire (694) is connected inside the electrical connector (693). The electrical wire (694) is located inside the second wire sleeve (601). A fixing sleeve (695) is fixedly connected to the outside of the second wire sleeve (601). A fitting plate (696) is fixedly connected to both the upper and lower sides of the fixing sleeve (695). The end of the fitting plate (696) away from the fixing sleeve (695) is fitted with the semi-circular sleeve (692).

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