Sodium ion battery packaging structure

Abstract

The invention discloses a sodium ion battery packaging structure, and belongs to the field. A sodium ion battery packaging structure comprises a packaging shell and a cover plate arranged on the packaging shell, and further comprises multiple groups of contact pieces and battery bodies which are arranged on the packaging shell and the cover plate, and the contact pieces are used for electrically connecting the multiple groups of battery bodies; the heat collection plate is fixedly connected to the inner wall of the packaging shell, a monitoring assembly is arranged on the side, close to the battery body, of the heat collection plate, a heat transfer assembly is arranged between the heat collection plate and the battery body, and when the battery body expands, the contact piece can be driven to be separated from the battery body through the monitoring assembly and the heat transfer assembly; the cooling fins are arranged on the cover plate, and a driving assembly is arranged on the side, close to the cooling fins, of the cover plate; according to the invention, the problems of high local temperature, poor heat dissipation effect, poor power-off effect and non-timeliness of the sodium ion battery cell can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sodium ion batteries, and in particular to a sodium ion battery packaging structure. Background Art

[0002] Sodium-ion battery is a secondary battery that mainly relies on the movement of sodium ions between the positive and negative electrodes to work. Its working principle is similar to that of lithium-ion batteries. Due to the high reserves of sodium elements in the bottom shell, it has good capacity retention rate in a large temperature range, fast charging speed, high safety, and good equipment compatibility. It has broad application prospects in power grid energy storage, communication base stations, and power electricity.

[0003] Currently, sodium-ion batteries are usually packaged in an integral manner. When in use and charging, the temperature may rise and even expand. If continued use occurs, it is easy to damage the battery cell and also cause damage to other battery cells. Most existing packaging structures use heat dissipation holes to achieve simple heat dissipation. Not only is the heat dissipation effect mediocre, but it is also difficult to effectively dissipate heat for battery cells with locally high temperatures. Moreover, before the battery cell is damaged, directly cutting off the power to the entire battery may cause damage to the equipment. Failure to cut off the power in time may easily cause the battery cell to spontaneously combust, posing a major safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems of high local temperature, poor heat dissipation, poor power-off effect and untimely power-off in the prior art sodium ion battery cells, and to propose a sodium ion battery packaging structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sodium-ion battery packaging structure comprises a packaging shell and a cover plate disposed on the packaging shell, further comprising: multiple groups of contact members and battery bodies disposed on the packaging shell and the cover plate, the contact members being used to electrically connect the multiple groups of battery bodies; a heat collecting plate fixedly connected to the inner wall of the packaging shell, a monitoring assembly being provided on the side of the heat collecting plate close to the battery body, a heat transfer assembly being provided between the heat collecting plate and the battery body, and when the battery body expands, the contact members can be driven to separate from the battery body via the monitoring assembly and the heat transfer assembly; and heat dissipating fins disposed on the cover plate, a drive assembly being provided on the side of the cover plate close to the heat dissipating fins, the drive assembly being connected to the monitoring assembly and the heat transfer assembly via a pipe, and being used to drive the heat dissipating fins to rotate back and forth along the cover plate.

[0007] In order to facilitate the monitoring of the expansion of the battery cells, preferably, the monitoring assembly includes multiple groups of hydraulic cylinders fixedly connected to the side of the heat collecting plate close to the battery body, and the end of the hydraulic cylinder away from the heat collecting plate is fixedly connected to an arc plate, and a second spring sleeved on the hydraulic cylinder is fixedly connected between the arc plate and the heat collecting plate, wherein the arc plate fits tightly against the outer wall of the battery body, and a contact-breaking mechanism connected to the contact piece is provided on the heat collecting plate.

[0008] In order to ensure the stability of the battery cell during use, further, multiple groups of limiters that fit with the battery body are provided on the inner wall of the packaging shell, multiple groups of support columns are provided on the side of the bottom of the packaging shell close to the battery body, and a groove matching the contact piece is provided on the side where the packaging shell and the cover plate are close to each other. A damping rod and a first spring are fixedly connected between the groove and the contact piece, and the first spring is sleeved on the outside of the damping rod.

[0009] In order to facilitate timely power off of the battery cell when a problem occurs, the disconnecting mechanism further includes a hydraulic plug-in plate fixedly connected to the heat collecting plate, a connecting pipe is connected between the hydraulic plug-in plate and the hydraulic cylinder, a sliding cavity connected to the groove is provided at the bottom of the packaging shell, a connecting plate slidably connected to the sliding cavity is fixedly connected to the bottom of the contact member, and a buffer member is fixedly connected to the connecting plate and fits the hydraulic plug-in plate.

[0010] In order to ensure the stability of the connection at the bottom of the battery cell, a positioning groove is further provided on the side of the bottom of the packaging shell close to the groove, and a stabilizing member is slidably connected inside the positioning groove. A third spring is fixedly connected between the stabilizing member and the positioning groove, and the top of the stabilizing member is in contact with the bottom of the contact member on the packaging shell.

[0011] In order to ensure the overall stability and uniformity of the battery, the heat transfer assembly further includes multiple groups of heat transfer frames fixedly connected to the heat collecting plate, multiple groups of sealing cylinders fixedly connected to the side of the heat transfer frame close to the heat collecting plate, a piston is slidably connected to the inside of the sealing cylinder, a heat-conducting rod slidably connected to the piston is fixedly connected to the piston, and a heat-conducting plate that fits the battery body is fixedly connected to the end of the heat-conducting rod away from the piston, and a fourth spring that is sleeved on the heat-conducting rod is fixedly connected between the heat-conducting plate and the heat transfer frame, wherein the side of the piston close to the heat-conducting plate is connected to the positioning groove and the hydraulic cylinder on the cover plate through a pipe.

[0012] In order to facilitate the heat dissipation of the battery cells in the packaging shell, further, a heat dissipation hole is opened on the cover plate, and multiple sets of rotating shafts are rotatably connected inside the heat dissipation hole. The heat dissipation fins are fixedly connected to the rotating shafts. A dustproof plate matching the heat dissipation hole is fixedly connected to the side of the cover plate away from the packaging shell. The interior of the cover plate is symmetrically provided with mounting grooves, and the rotating shafts extend to the interior of the mounting grooves.

[0013] In order to improve the heat dissipation effect of the battery core, further, the driving assembly includes a fan-shaped gear fixedly connected to the side of the rotating shaft close to the mounting groove, the interior of the mounting groove is slidably connected to a tooth plate meshing with the fan-shaped gear, and the interior of the cover plate is symmetrically fixedly connected to a telescopic rod connected to the tooth plate, wherein the end of the telescopic rod away from the tooth plate is connected to the changing assembly, and the hydraulic cylinder, buffer and piston in the packaging shell are connected to the telescopic rod on the side away from the heat-conducting rod through a pipe through the changing assembly.

[0014] In order to facilitate the adjustment of the rotation direction of the heat dissipating fins, the changing assembly further includes a guide member fixedly connected in the cover plate and connected to the telescopic rod, a first slide groove and a second slide groove are provided inside the guide member, and a movable valve seat is slidably connected inside the first slide groove and the second slide groove, the telescopic rod is fixedly connected to a connecting member on the side close to the guide member, and the connecting member is fixedly connected to a valve core on the end away from the telescopic rod, and a fifth spring is fixedly connected between the valve core and the telescopic rod, wherein the valve core is located between the two groups of movable valve seats, and the side of the valve core close to the movable valve seat is inclined, the fifth spring is sleeved on the connecting member, and the first slide groove and the second slide groove on the same side are connected by a pipe.

[0015] In order to ensure the continuity of the reciprocating rotation of the heat dissipating fins, further, an electric control component is symmetrically fixedly connected to one side of the bottom of the mounting groove near the sector gears at both ends, wherein an electric slide rail electrically connected to the electric control component is provided between the first slide groove and the movable valve seat on one side, and an electric slide rail electrically connected to the electric control component is provided between the second slide groove and the movable valve seat on the other side.

[0016] Compared with the prior art, the present invention provides a sodium ion battery packaging structure with the following beneficial effects:

[0017] 1. The sodium-ion battery packaging structure can ensure the stability of the electrical connection of the battery cell during use through the contact parts, limit parts and support columns. The expansion of the battery cell can be monitored by the monitoring component. When the battery cell expands, the heat transfer component and the contact disconnection mechanism are used to separate the contact parts from the battery cell, thereby achieving power outage of a single group of battery cells. On the one hand, it can avoid damage to the equipment caused by the overall power outage of the battery, and on the other hand, it can reduce the impact on the battery cell, thereby improving the safety of the battery and the battery during use.

[0018] 2. The sodium-ion battery packaging structure can transfer the heat dissipated from the battery cell to the heat collecting plate through the heat transfer component. On the one hand, it can reduce the accumulation of heat on the battery cell, and on the other hand, it can ensure the uniformity of the temperature of each group of battery cells, thereby ensuring the stability of the battery as a whole during use.

[0019] 3. The sodium-ion battery packaging structure, through the heat transfer component, monitoring component and driving component, can drive the heat dissipation fins to rotate when the battery cell expands and generates a large amount of heat. Under the action of the changing direction component, the heat dissipation fins can be continuously rotated back and forth, thereby improving the overall heat dissipation effect of the battery and further improving the safety of battery use.

[0020] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can overcome the problems of high local temperature of the sodium ion battery cell, poor heat dissipation effect, poor power-off effect and untimely power-off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a sodium ion battery packaging structure proposed by the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of a sodium ion battery packaging structure proposed by the present invention;

[0023] Figure 3 A schematic diagram of the internal structure of a packaging shell in a sodium ion battery packaging structure proposed by the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of a sodium ion battery packaging structure proposed by the present invention;

[0025] Figure 5 This is a schematic structural diagram of a cover plate in a sodium ion battery packaging structure proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of a partial cross-sectional structure of a cover plate in a sodium ion battery packaging structure proposed by the present invention;

[0027] Figure 7 A sodium ion battery packaging structure proposed by the present invention Figure 2 Schematic diagram of the local structure;

[0028] Figure 8 A sodium ion battery packaging structure proposed by the present invention Figure 6 Schematic diagram of the structure of part A.

[0029] In the figure: 1. Encapsulation shell; 2. Cover plate; 3. Limiting member; 4. Groove; 5. Damping rod; 6. Contact member; 7. First spring; 8. Battery body; 9. Support column; 10. Heat collecting plate; 11. Hydraulic cylinder; 12. Curved plate; 13. Second spring; 14. Hydraulic plug plate; 15. Connecting pipe; 16. Sliding cavity; 17. Connecting plate; 18. Buffer member; 19. Positioning groove; 20. Stabilizing member; 21. Third spring; 22. Heat transfer frame; 23. Sealing cylinder; 24. Piston; 25. Heat-conducting rod; 26. Heat-conducting plate; 27. Fourth spring; 28. Heat dissipation hole; 29. ​​Rotating shaft; 30. Heat dissipation fin; 31. Mounting slot; 32. Fan gear; 33. Tooth plate; 34. Telescopic rod; 35. Electric control unit; 36. Flow guide; 37. First slide; 38. Second slide; 39. Movable valve seat; 40. Connecting piece; 41. Fifth spring; 42. Valve core; 43. Dustproof plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0032] Example:

[0033] Reference Figures 1-8A sodium ion battery packaging structure includes a packaging shell 1 and a cover plate 2 provided on the packaging shell 1. The connection method between the cover plate 2 and the packaging shell 1 can refer to the technical solutions in the prior art. Those skilled in the art will know and will not elaborate on it here. The structure also includes: multiple groups of contacts 6 and battery bodies 8 provided on the packaging shell 1 and the cover plate 2. The contacts 6 are used to electrically connect the multiple groups of battery bodies 8. It should be explained that the multiple groups of battery bodies 8 are connected in parallel through the contacts 6. When a single group of battery bodies 8 is powered off, the remaining battery bodies 8 are still in a connected state, but the voltage is lower than that in normal operation. A heat collecting plate 10 is fixedly connected to the inner wall of the packaging shell 1. The heat collecting plate 10 is a conventional means in the prior art and will not be described in detail here. A monitoring component is provided on the side of the heat collecting plate 10 close to the battery body 8, and a heat transfer component is provided between the heat collecting plate 10 and the battery body 8. When the battery body 8 expands, the contact member 6 can be driven to separate from the battery body 8 through the monitoring component and the heat transfer component; a heat dissipation fin 30 is provided on the cover plate 2, and a driving component is provided on the side of the cover plate 2 close to the heat dissipation fin 30. The driving component is connected to the monitoring component and the heat transfer component through a pipe, and is used to drive the heat dissipation fin 30 to rotate back and forth along the cover plate 2.

[0034] Reference Figure 2 and Figure 7 The monitoring component includes multiple groups of hydraulic cylinders 11 fixedly connected to the side of the heat collecting plate 10 close to the battery body 8. The end of the hydraulic cylinder 11 away from the heat collecting plate 10 is fixedly connected to an arc plate 12. A second spring 13 sleeved on the hydraulic cylinder 11 is fixedly connected between the arc plate 12 and the heat collecting plate 10, wherein the arc plate 12 fits tightly against the outer wall of the battery body 8, and a contact-breaking mechanism connected to the contact piece 6 is provided on the heat collecting plate 10.

[0035] During normal use, the arc plate 12 can work together with the limiting member 3 to limit the battery body 8. When the battery body 8 expands, the arc plate 12 will be squeezed to compress the hydraulic cylinder 11, thereby monitoring the expansion state of the battery body 8.

[0036] Reference Figure 2 、 Figure 3 and Figure 7 , multiple groups of limit members 3 that fit with the battery body 8 are provided on the inner wall of the packaging shell 1, multiple groups of support columns 9 are provided on the side of the bottom of the packaging shell 1 close to the battery body 8, and a groove 4 that matches the contact member 6 is opened on the side where the packaging shell 1 and the cover plate 2 are close to each other. A damping rod 5 and a first spring 7 are fixedly connected between the groove 4 and the contact member 6, and the first spring 7 is sleeved on the outside of the damping rod 5.

[0037] It should be explained that multiple groups of contacts 6 are connected in parallel through lines. This is a conventional method in the prior art and is therefore not shown in the accompanying drawings. By adjusting the position of the contact 6 in the groove 4, the disconnection and passage of the battery body 8 can be achieved, and when the contact 6 at the bottom of the packaging shell 1 is received in the groove 4, the support column 9 can support the battery body 8 to ensure the stability of the disconnection of the battery body 8, while reducing the movement of the battery body 8 on the inner wall of the packaging shell 1, thereby reducing the wear of the battery body 8.

[0038] Reference Figure 7 The contact-breaking mechanism includes a hydraulic plug-in plate 14 fixedly connected to the heat collecting plate 10, a connecting pipe 15 is connected between the hydraulic plug-in plate 14 and the hydraulic cylinder 11, a sliding cavity 16 connected to the groove 4 is provided at the bottom of the encapsulating shell 1, a connecting plate 17 slidably connected to the sliding cavity 16 is fixedly connected to the bottom of the contact member 6, a buffer member 18 is fixedly connected to the connecting plate 17 and is in contact with the hydraulic plug-in plate 14, a positioning groove 19 is provided on the side of the bottom of the encapsulating shell 1 close to the groove 4, a stabilizing member 20 is slidably connected inside the stabilizing groove 19, a third spring 21 is fixedly connected between the stabilizing member 20 and the positioning groove 19, and the top of the stabilizing member 20 is in contact with the bottom of the contact member 6 on the encapsulating shell 1.

[0039] When the battery body 8 expands (according to existing experimental data, during the expansion process of the sodium ion battery, due to changes in the internal chemical reaction, it will cause self-heating, causing the battery temperature to rise), the liquid compressed by the hydraulic cylinder 11 will enter the hydraulic plug plate 14 through the connecting pipe 15, thereby compressing the buffer 18, and when the stabilizing member 20 is received in the positioning groove 19, the contact member 6 in the packaging shell 1 is driven to be received in the groove 4 through the connecting plate 17, thereby separating the battery body 8 from the contact member 6, realizing the power-off processing of the battery body 8, and will not affect the normal use of other battery bodies 8 (when a single group of battery bodies 8 is powered off, the battery as a whole can still be used, but the voltage is lower than the normal state, which is not suitable for long-term operation of the equipment). This can avoid damage to the equipment caused by sudden power outage.

[0040] Reference Figure 4 and Figure 7 The heat transfer assembly includes multiple groups of heat transfer frames 22 fixedly connected to the heat collecting plate 10, and multiple groups of sealing cylinders 23 are fixedly connected to the side of the heat transfer frame 22 close to the heat collecting plate 10. A piston 24 is slidably connected to the inside of the sealing cylinder 23, and a heat-conducting rod 25 slidably connected to the piston 24 is fixedly connected to the piston 24. The end of the heat-conducting rod 25 away from the piston 24 is fixedly connected to a heat-conducting sheet 26 that fits the battery body 8. A fourth spring 27 is fixedly connected between the heat-conducting sheet 26 and the heat transfer frame 22, and is sleeved on the heat-conducting rod 25. The side of the piston 24 close to the heat-conducting sheet 26 is connected to the positioning groove 19 and the hydraulic cylinder 11 on the cover plate 2 through a pipeline.

[0041] As the battery body 8 expands, it also compresses the heat conducting sheet 26, and the piston 24 absorbs the liquid in the hydraulic cylinder 11 and the positioning groove 19 on the cover plate 2. On the one hand, this allows the contact member 6 on the cover plate 2 to be separated from the battery body 8, and on the other hand, it releases the lock of the stabilizing member 20 on the contact member 6 in the packaging case 1, thereby ensuring the stability of the battery body 8 when it is powered off. During this process, the buffer member 18 will first be in a contracted state to prevent the connecting plate 17 from bending.

[0042] In addition, it needs to be explained that the side of the piston 24 away from the heat-conducting rod 25 is a liquid with a larger thermal expansion coefficient, that is, the higher the temperature, the greater the volume increase.

[0043] Reference Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The cover plate 2 is provided with heat dissipation holes 28, and the heat dissipation holes 28 are internally rotatably connected to multiple sets of rotating shafts 29. The heat dissipation fins 30 are fixedly connected to the rotating shafts 29. The side of the cover plate 2 away from the packaging shell 1 is fixedly connected with a dustproof plate 43 that matches the heat dissipation holes 28. The inside of the cover plate 2 is symmetrically provided with mounting grooves 31, and the rotating shafts 29 extend into the inside of the mounting grooves 31.

[0044] During normal operation, the heat generated by the battery body 8 will be transferred to the heat collecting plate 10 and dissipated through the heat dissipation holes 28. The dustproof plate 43 can prevent external dust from entering the interior of the packaging shell 1.

[0045] Reference Figure 6 The driving assembly includes a sector gear 32 fixedly connected to the side of the rotating shaft 29 near the mounting groove 31, and a tooth plate 33 meshing with the sector gear 32 is slidably connected inside the mounting groove 31. A telescopic rod 34 connected to the tooth plate 33 is symmetrically fixedly connected inside the cover plate 2, wherein the end of the telescopic rod 34 away from the tooth plate 33 is connected to the direction-changing assembly, and the hydraulic cylinder 11, the buffer member 18 and the piston 24 in the packaging shell 1 are connected to the telescopic rod 34 on the side away from the heat-conducting rod 25 through the direction-changing assembly through a pipeline.

[0046] The telescopic rod 34 can drive the tooth plate 33 to move inside the mounting groove 31, thereby driving the sector gear 32 to rotate, and then driving the heat dissipation fins 30 to rotate. During the rotation process, the heat discharge inside the packaging shell 1 can be accelerated, thereby improving the heat dissipation effect of the battery body 8.

[0047] Reference Figure 6 and Figure 8The direction-changing assembly includes a flow guide 36 fixedly connected to the cover plate 2 and connected to the telescopic rod 34. A first slide groove 37 and a second slide groove 38 are provided inside the flow guide 36. A movable valve seat 39 is slidably connected inside the first slide groove 37 and the second slide groove 38. A connecting member 40 is fixedly connected to the side of the telescopic rod 34 close to the flow guide 36. A valve core 42 is fixedly connected to the end of the connecting member 40 away from the telescopic rod 34. A fifth spring 41 is fixedly connected between the valve core 42 and the telescopic rod 34. The valve core 42 is located between the two sets of movable valve seats 3 9, and the side of the valve core 42 close to the movable valve seat 39 is inclined, the fifth spring 41 is sleeved on the connecting piece 40, the first slide groove 37 and the second slide groove 38 on the same side are connected by a pipeline, and the electric control unit 35 is symmetrically fixedly connected to the side of the fan gears 32 at both ends of the bottom of the mounting groove 31, wherein an electric slide rail electrically connected to the electric control unit 35 is provided between the first slide groove 37 and the movable valve seat 39 on one side, and an electric slide rail electrically connected to the electric control unit 35 is provided between the second slide groove 38 and the movable valve seat 39 on the other side.

[0048] When the battery body 8 expands (the heat is also high at this time), the side of the piston 24 away from the heat-conducting rod 25 is in a compressed state, and the volume of the liquid inside it increases. When the pressure increases to a certain level, it will enter the interior of the telescopic rod 34 through the guide piece 36 on one side. At this time, the guide piece 36 on the other side is in a unidirectional flow state under the action of the movable valve seat 39 and the valve core 42. As a result, under the action of the telescopic rod 34, the toothed plate 33 is driven to move to one side, driving the sector gear 32 to rotate, thereby driving the heat dissipation fins 30 to rotate. When the heat dissipation fins 30 rotate to the other side, the sector gear 32 triggers the electric control unit 35, causing the position of the movable valve seat 39 on both sides to change, that is, the unidirectional flow direction of the guide pieces 36 on both sides to change. Subsequently, the toothed plate 33 moves to the other side, driving the sector gear 32 to rotate in the opposite direction. Repeating the above process can drive the heat dissipation fins 30 to rotate back and forth, thereby accelerating the discharge of heat in the packaging shell 1 and improving the heat dissipation effect of the battery body 8.

[0049] In addition, if the battery body 8 does not expand, but the temperature is high (the temperature is lower than the expansion temperature), the volume of the liquid on the side of the piston 24 away from the heat-conducting rod 25 will still increase, that is, the heat dissipation fins 30 can still be driven to rotate according to the above process, but the rotation speed is low to ensure the safety of the battery body 8.

[0050] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sodium ion battery packaging structure, comprising a packaging shell (1) and a cover plate (2) arranged on the packaging shell (1), characterized in that: Also includes: A plurality of groups of contact members (6) and battery bodies (8) arranged on the packaging shell (1) and the cover plate (2), wherein the contact members (6) are used to electrically connect the plurality of groups of battery bodies (8); A heat collecting plate (10) is fixedly connected to the inner wall of the packaging shell (1), a monitoring component is arranged on the side of the heat collecting plate (10) close to the battery body (8), and a heat transfer component is arranged between the heat collecting plate (10) and the battery body (8), and when the battery body (8) expands, the contact piece (6) can be driven to separate from the battery body (8) through the monitoring component and the heat transfer component; A heat dissipation fin (30) is arranged on the cover plate (2), and a driving component is arranged on a side of the cover plate (2) close to the heat dissipation fin (30). The driving component is connected to the monitoring component and the heat transfer component through a pipeline and is used to drive the heat dissipation fin (30) to reciprocate along the cover plate (2).

2. A sodium ion battery packaging structure according to claim 1, characterized in that: The monitoring assembly comprises a plurality of hydraulic cylinders (11) fixedly connected to a side of the heat collecting plate (10) close to the battery body (8); an end of the hydraulic cylinder (11) away from the heat collecting plate (10) is fixedly connected to an arc plate (12); a second spring (13) sleeved on the hydraulic cylinder (11) is fixedly connected between the arc plate (12) and the heat collecting plate (10); The arc-shaped plate (12) is tightly fitted to the outer wall of the battery body (8), and the heat collecting plate (10) is provided with a contact-breaking mechanism connected to the contact piece (6).

3. A sodium ion battery packaging structure according to claim 2, characterized in that: The inner wall of the packaging shell (1) is provided with a plurality of groups of stoppers (3) that fit with the battery body (8); the bottom of the packaging shell (1) is provided with a plurality of groups of support columns (9) on a side close to the battery body (8); a groove (4) that matches the contact piece (6) is provided on a side where the packaging shell (1) and the cover plate (2) are close to each other; a damping rod (5) and a first spring (7) are fixedly connected between the groove (4) and the contact piece (6), and the first spring (7) is sleeved on the outside of the damping rod (5).

4. A sodium ion battery packaging structure according to claim 3, characterized in that: The disconnect mechanism comprises a hydraulic plug plate (14) fixedly connected to the heat collecting plate (10); a connecting pipe (15) is connected between the hydraulic plug plate (14) and the hydraulic cylinder (11); a sliding cavity (16) connected to the groove (4) is provided at the bottom of the packaging shell (1); a connecting plate (17) slidably connected to the sliding cavity (16) is fixedly connected to the bottom of the contact member (6); and a buffer member (18) in contact with the hydraulic plug plate (14) is fixedly connected to the connecting plate (17).

5. A sodium ion battery packaging structure according to claim 4, characterized in that: A positioning groove (19) is provided on one side of the bottom of the packaging shell (1) close to the groove (4); a stabilizing member (20) is slidably connected inside the positioning groove (19); a third spring (21) is fixedly connected between the stabilizing member (20) and the positioning groove (19); and the top of the stabilizing member (20) fits with the bottom of the contact member (6) on the packaging shell (1).

6. A sodium ion battery packaging structure according to claim 5, characterized in that: The heat transfer assembly comprises a plurality of heat transfer frames (22) fixedly connected to the heat collecting plate (10); a plurality of sealing cylinders (23) are fixedly connected to one side of the heat transfer frame (22) close to the heat collecting plate (10); a piston (24) is slidably connected to the inside of the sealing cylinder (23); a heat conducting rod (25) slidably connected to the piston (24); a heat conducting sheet (26) fitted to the battery body (8) is fixedly connected to one end of the heat conducting rod (25) away from the piston (24); a fourth spring (27) sleeved on the heat conducting rod (25) is fixedly connected between the heat conducting sheet (26) and the heat transfer frame (22); Wherein, the side of the piston (24) close to the heat conducting plate (26) is connected to the positioning groove (19) and the hydraulic cylinder (11) on the cover plate (2) through a pipeline.

7. A sodium ion battery packaging structure according to claim 6, characterized in that: The cover plate (2) is provided with a heat dissipation hole (28), the heat dissipation hole (28) is rotatably connected to a plurality of rotating shafts (29), the heat dissipation fins (30) are fixedly connected to the rotating shafts (29), a dustproof plate (43) matching the heat dissipation hole (28) is fixedly connected to the side of the cover plate (2) away from the packaging shell (1), the cover plate (2) is symmetrically provided with mounting grooves (31), and the rotating shafts (29) extend to the inside of the mounting grooves (31).

8. A sodium ion battery packaging structure according to claim 7, characterized in that: The driving assembly comprises a sector gear (32) fixedly connected to a side of the rotating shaft (29) close to the mounting groove (31); a tooth plate (33) meshing with the sector gear (32) is slidably connected inside the mounting groove (31); a telescopic rod (34) connected to the tooth plate (33) is symmetrically fixedly connected inside the cover plate (2); The end of the telescopic rod (34) away from the tooth plate (33) is connected to a direction-changing assembly, and the hydraulic cylinder (11), the buffer component (18) and the piston (24) in the packaging shell (1) away from the heat-conducting rod (25) are connected to the telescopic rod (34) through a pipeline via the direction-changing assembly.

9. A sodium ion battery packaging structure according to claim 8, characterized in that: The direction-changing assembly comprises a flow guide (36) fixedly connected in the cover plate (2) and connected to the telescopic rod (34); a first slide groove (37) and a second slide groove (38) are provided inside the flow guide (36); a movable valve seat (39) is slidably connected inside the first slide groove (37) and the second slide groove (38); a connecting member (40) is fixedly connected to a side of the telescopic rod (34) close to the flow guide (36); an end of the connecting member (40) away from the telescopic rod (34) is fixedly connected to a valve core (42); a fifth spring (41) is fixedly connected between the valve core (42) and the telescopic rod (34); The valve core (42) is located between two groups of movable valve seats (39), and the side of the valve core (42) close to the movable valve seat (39) is inclined, the fifth spring (41) is sleeved on the connecting piece (40), and the first slide groove (37) and the second slide groove (38) on the same side are connected through a pipeline.

10. A sodium ion battery packaging structure according to claim 9, characterized in that: An electric control unit (35) is symmetrically fixedly connected to one side of the bottom of the mounting groove (31) near the two end sector gears (32), wherein an electric slide rail electrically connected to the electric control unit (35) is arranged between the first slide groove (37) and the movable valve seat (39) on one side, and an electric slide rail electrically connected to the electric control unit (35) is arranged between the second slide groove (38) and the movable valve seat (39) on the other side.

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