An explosion-proof sodium-ion battery energy storage module that can automatically adjust the cabin temperature

Abstract

The present invention relates to the technical field of battery pack cooling, and discloses an explosion-proof sodium ion battery energy storage module capable of automatically adjusting the temperature in a cabin, comprising a cabin, a battery pack and a partition cooling mechanism located above the battery pack; the battery pack comprises a mounting plate symmetrically arranged up and down and a plurality of battery cells arranged between the mounting plates; the partition cooling mechanism comprises a heat absorbing box arranged in the cabin and a heat conducting plate arranged below the heat absorbing box, a plurality of cooling cavities are provided in the heat absorbing box, and the positions of the cooling cavities and the battery cells correspond one to one. The explosion-proof sodium ion battery energy storage module capable of automatically adjusting the temperature in the cabin can effectively reduce the temperature of each battery cell by providing a corresponding cooling cavity on each battery cell group for targeted partition cooling, and improve the heat exchange efficiency between the coolant and the heat source by forming a heat dissipation channel in a bent state in the cooling cavity with a foldable water retaining strip.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack cooling, and in particular to an explosion-proof sodium ion battery energy storage module capable of automatically adjusting the temperature in a cabin. Background Art

[0002] Sodium-ion batteries are based on the principle of lithium-ion batteries. By using sodium ions as the main charge carrier, they are assembled in the form of battery cells in a battery casing during use. Multiple battery casings are then spliced ​​together to form a large battery energy storage module. Finally, the assembled sodium-ion battery energy storage module is installed in the corresponding position of the electric vehicle. As an energy storage solution to replace lithium-ion batteries, the sodium-ion battery energy storage module shows great potential in application areas such as electric vehicles.

[0003] A battery pack cooling system disclosed in the existing publication number CN116130845A includes a battery pack bottom shell, a grouping partition, a battery pack section, a fixed upper cover, a cooling exhaust chamber, a power distribution state control box, an upper positive and negative contact block, a lower positive and negative contact block and a conductive connecting piece. A grouping partition is provided inside the battery pack bottom shell, and the battery pack sections are installed inside the battery pack bottom shell. There are gaps between the battery pack sections. The grouping partition divides the battery pack sections into two independent groups. Through the power distribution state control box, the two independent groups of battery pack sections can work alternately. When one of the battery pack sections is working, the other battery pack section can be in a heat dissipation state of stopping power supply.

[0004] Although the above technical solution can make two independent battery packs work alternately, when one battery pack is working, the other battery pack can be in a heat dissipation state of stopping power supply, which has the effect of improving the deep cooling and heat dissipation effect inside the battery pack, but in the prior art, especially under extreme temperature conditions, especially in high temperature environments, although the traditional battery pack cooling system can monitor the temperature changes of the battery and take protective measures in time to avoid safety accidents such as battery overheating and explosion, the traditional battery pack cooling system can usually only monitor the overall average temperature of the battery pack, but cannot control the temperature of each local area inside the battery pack, which causes some battery packs to fail to obtain targeted cooling in time when they are locally overheated, increasing the risk of thermal runaway, especially when the batteries are densely arranged, the uneven temperature distribution can easily cause the battery cells in the local area to be subjected to higher temperatures, thereby increasing the risk of thermal runaway and the possibility of accidents, and causing the battery life to be reduced. Therefore, a new type of explosion-proof sodium-ion battery energy storage module that can automatically adjust the cabin temperature is needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an explosion-proof sodium-ion battery energy storage module that can automatically adjust the temperature in the cabin, so as to solve the problem that the traditional battery pack proposed in the above background technology has insufficient control over the temperature of the local area of ​​the battery pack during cooling, thereby increasing the risk of thermal runaway.

[0006] The present invention provides an explosion-proof sodium ion battery energy storage module capable of automatically adjusting the cabin temperature, which adopts the following technical solution:

[0007] An explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the temperature in a cabin, comprising a cabin body and a temperature detector, a controller, a water tank, a circulation pump, a liquid outlet pipe and a circulation pipe arranged in the cabin body, wherein a battery pack and a partition cooling mechanism located above the battery pack are also arranged in the cabin body;

[0008] The battery pack includes a mounting plate symmetrically arranged up and down and a plurality of battery units arranged between the mounting plates, each of the battery units includes a plurality of battery columns, and a shell is movably provided outside each of the battery columns;

[0009] The partitioned cooling mechanism includes a heat absorption box arranged in the cabin and a heat conduction plate arranged below the heat absorption box, the heat absorption box and the heat conduction plate are connected by fins, a plurality of cooling chambers are provided in the heat absorption box, and the cooling chambers correspond to the positions of the battery cells one by one, a liquid inlet is provided in the cooling chamber, wherein the liquid inlet is connected to a circulation pump through a liquid outlet pipe, a liquid outlet is also provided in the cooling chamber, wherein the liquid outlet is connected to the water tank through a circulation pipe, the temperature detector and the controller are connected by wire signals, and the controller and the circulation pump are connected by wire signals, each group of the cooling chambers is provided with at least two groups of foldable water retaining strips, and each group of the foldable water retaining strips is provided with a folding mechanism.

[0010] Further, the folding mechanism includes a first connecting rod rotatably arranged in the cooling chamber, a second connecting rod rotatably connected to the first connecting rod, and a third connecting rod rotatably connected to the second connecting rod, the first connecting rod is rotatably arranged in the cooling chamber through a main shaft, the second connecting rod and the third connecting rod are both limited in the cooling chamber by an axle block, and the first connecting rod, the second connecting rod and the third connecting rod are all fixed to the foldable water retaining strip;

[0011] One end of the main shaft passes through the heat absorption box and is rotatably arranged on the heat conducting plate, on which a heat sensing mechanism corresponding to the main shaft is arranged, and each group of the heat sensing mechanisms includes a heat conducting block fixed on the heat conducting plate, a plug rod limitedly inserted in the heat conducting block, two groups of abutment columns fixed on the plug rod, and an abutment plate fixed on the main shaft, the abutment columns correspond to and contact the abutment plates one by one, and the heat conducting block is filled with a heat sensitive material.

[0012] Furthermore, one end of the foldable water retaining strip away from the first connecting rod passes through the cooling cavity and is inserted into a slot opened in the heat absorption box. A plurality of winding shafts are rotatably arranged in the slot. One end of the foldable water retaining strip away from the first connecting rod is fixed on the corresponding winding shaft and wound around the outside of the winding shaft. A first torsion spring is arranged between the winding shaft and the slot.

[0013] Furthermore, a torsion mechanism is provided between each four groups of the shells, and the torsion mechanism includes a rotating wheel rotatably provided on the mounting plate and a cam fixed on the rotating wheel, the rotating wheel is rotatably provided on the mounting plate through a rotating shaft, a second torsion spring is provided on the rotating shaft, a pull rope is provided between the multiple groups of cams arranged vertically, and an electric push rod is also provided in the cabin, and the output end of the electric push rod is connected to the pull rope;

[0014] The heat conducting plate is provided with a patch type temperature sensor corresponding to the electric push rod one by one, the patch type temperature sensor is connected to the controller through a wire signal, and the controller is connected to the electric push rod through a wire signal.

[0015] Furthermore, a track for limiting the movement of the shell is provided on the mounting plate, a slider is slidably connected in the track, the slider is fixed on the shell, and a spring is provided between the slider and the track.

[0016] Furthermore, both the upper and lower groups of mounting plates are provided with a plurality of groups of main heat dissipation openings, wherein the main heat dissipation openings are located in the corresponding outer shell.

[0017] Furthermore, a plurality of groups of compensating heat dissipation openings are provided on the upper and lower groups of the mounting plates, and the compensating heat dissipation openings are located outside the corresponding housing.

[0018] Furthermore, a guide groove for limiting sliding of the shaft block is provided in the cooling cavity.

[0019] Furthermore, the rotating wheel is arranged between every four groups of outer shells, and the rotating wheel is designed in a windmill shape, and the four sides of the rotating wheel are respectively fitted with the side close to each four groups of outer shells.

[0020] Furthermore, a fan is provided on one side of the cabin, and a honeycomb-shaped vent is provided on the other side of the cabin. The fan is connected to a controller via a wire signal.

[0021] Beneficial effects of the present invention:

[0022] 1. By setting up a partitioned cooling mechanism, a folding mechanism and a thermal sensing mechanism, since each group of battery cells will generate different amounts of heat during use, a corresponding cooling cavity is set on each group of battery cells for targeted partitioned cooling, which can effectively reduce the temperature of each group of battery cells. Through the cooperation of the thermal sensing mechanism and the folding mechanism, when the temperature above a single group of battery cells is too high, the foldable water retaining strip is controlled to form a bent heat dissipation channel in the cooling cavity, further increasing the contact area between the coolant and the heat dissipation channel, improving the heat exchange efficiency between the coolant and the heat source, so that more heat can be effectively taken away, improving the heat dissipation effect of the local area of ​​the battery pack, reducing the temperature above the corresponding battery cell, achieving a more uniform temperature distribution, and effectively avoiding overheating of some battery cells and increasing the risk of thermal runaway.

[0023] 2. By providing a torsion mechanism and a patch temperature sensor, when the temperature of a single battery cell is too high, the corresponding patch temperature sensor can convert the detected temperature value into temperature data information and send it to the controller, and then the controller controls the corresponding electric push rod to retract, so that the distance between the corresponding shells is increased. The increase in the distance between the shells can effectively improve air circulation and promote heat dissipation, thereby helping to reduce the temperature of the battery column and extend the service life of the battery column. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic cross-sectional view of the three-dimensional structure at the middle cabin;

[0026] Figure 3 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the battery pack, partition cooling mechanism, temperature detector and controller;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the battery pack of the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the three-dimensional structure of the middle mounting plate and battery unit;

[0029] Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the heat absorption box of the present invention;

[0030] Figure 7 For the present invention Figure 6 A schematic diagram of the folded state of the three-dimensional structure at the foldable water retaining strip in the middle;

[0031] Figure 8 It is an exploded schematic diagram of the three-dimensional structure of the heat absorption box and the heat conducting plate of the present invention;

[0032] Fig. 9 It is a three-dimensional structural schematic diagram of the foldable water retaining strip, the first connecting rod, the second connecting rod, the third connecting rod, the main shaft and the thermal sensing mechanism of the present invention;

[0033] Fig.10 It is a schematic diagram of a top view of the structure section of the heat absorption box of the present invention;

[0034] Fig.11 It is an exploded schematic diagram of the three-dimensional structure of the heat conducting block and the insertion rod of the present invention;

[0035] Fig.12 It is a schematic diagram showing the partial top view of the structure of the mounting plate, battery column, housing and torsion mechanism of the present invention;

[0036] Fig.13 It is an exploded schematic diagram of the three-dimensional structure of the mounting plate, the rotating wheel, the rotating shaft and the second torsion spring of the present invention;

[0037] Fig.14 It is a schematic diagram of the three-dimensional structure of the shell of the present invention.

[0038] In the figure:

[0039] 1. Cabin; 11. Water tank; 12. Circulation pump; 13. Liquid outlet pipe; 14. Circulation pipe; 15. Fan; 2. Battery pack; 21. Mounting plate; 211. Main heat dissipation port; 212. Compensation heat dissipation port; 213. Track; 214. Slider; 215. Spring; 22. Battery unit; 221. Battery column; 222. Shell; 3. Partition cooling mechanism; 31. Heat absorption box; 311. Slot; 312. Winding reel; 313. First torsion spring; 32. Heat conduction plate; 33. Fin; 34. Cooling chamber; 341. Inlet Liquid inlet; 342, liquid outlet; 343, guide groove; 35, foldable water retaining strip; 4, folding mechanism; 41, first connecting rod; 411, main shaft; 42, second connecting rod; 43, third connecting rod; 44, shaft block; 5, thermal sensing mechanism; 51, heat conductive block; 52, plug rod; 53, abutment column; 54, abutment plate; 6, torsion mechanism; 61, rotating wheel; 62, cam; 63, rotating shaft; 64, second torsion spring; 65, pull rope; 66, electric push rod; 7, temperature detector; 8, controller; 9, chip-type temperature sensor. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] Reference Figure 1-Figure 6, an explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the temperature in a cabin, comprising a cabin 1 and a temperature detector 7, a controller 8, a water tank 11, a circulation pump 12, a liquid outlet pipe 13 and a circulation pipe 14 arranged in the cabin 1. Specifically, the temperature detector 7 and the controller 8 are fixedly mounted on the inner wall of the cabin 1, and a battery pack 2 and a partition cooling mechanism 3 located above the battery pack 2 are also arranged in the cabin 1;

[0042] Specifically, the battery pack 2 includes a mounting plate 21 symmetrically arranged up and down and a plurality of battery cells 22 arranged between the mounting plates 21, the plurality of battery cells 22 are arranged in a transverse arrangement between the mounting plates 21, each battery cell 22 includes a plurality of battery columns 221, and each battery column 221 is movably sleeved with a shell 222, the partition cooling mechanism 3 includes a heat absorption box 31 arranged in the cabin 1 and a heat conduction plate 32 arranged below the heat absorption box 31, the heat absorption box 31 and the heat conduction plate 32 are connected by fins 33, the material of the fins 33 can be copper, wherein the heat conduction plate 32 is located on the upper surface of the mounting plate 21 above, and is used to conduct the heat of the battery cells 22, and a plurality of cooling chambers 34 are provided in the heat absorption box 31, and the cooling chambers 34 Corresponding to the position of the battery cell 22, the heat at the battery cell 22 is transferred to the fin 33 through the heat conducting plate 32, and then transferred to the cooling chamber 34 through the fin 33. A liquid inlet 341 is provided in the cooling chamber 34, wherein the liquid inlet 341 is connected to the circulation pump 12 through the liquid outlet pipe 13. A liquid outlet 342 is also provided in the cooling chamber 34, wherein the liquid outlet 342 is connected to the water tank 11 through the circulation pipe 14. The temperature detector 7 and the controller 8 are connected through wire signals, and the controller 8 is connected to the circulation pump 12 through wire signals. At least two groups of foldable water retaining strips 35 are provided in each group of cooling chambers 34, and a heat dissipation channel is formed between the foldable water retaining strips 35 and the cooling chamber 34, and a folding mechanism 4 is provided on each group of foldable water retaining strips 35.

[0043] The controller 8 includes temperature data receiving, temperature data processing and program execution. The temperature detector 7 includes temperature detection. The temperature detector 7 is used to monitor the temperature in the cabin 1 in real time. The temperature detector 7 converts the detected temperature value into temperature data information. After the controller 8 receives the temperature data information from the temperature detector 7, it calculates and processes the temperature data information received multiple times.

[0044] During operation: when the temperature in the cabin 1 is higher than the set value of the temperature detector 7, the temperature detector 7 converts the detected temperature value into temperature data information and sends it to the controller 8. After receiving the data transmitted by the temperature detector 7, the controller 8 controls the circulation pump 12 to start, and the circulation pump 12 is used to transport the coolant in the water tank 11, so that the coolant passes through the liquid outlet pipe 13 and enters the corresponding cooling chambers 34 respectively. After the coolant enters the cooling chamber 34, the heat is dissipated through the heat dissipation channel formed between the foldable water retaining bar 35 and the cooling chamber 34. The coolant absorbs the heat above the corresponding battery unit 22, and finally enters the circulation pipe 14 through the liquid outlet 342 and returns to the water tank 11. Driven by the circulation pump 12, the coolant circulates in a fixed circulation path.

[0045] Specifically, refer to Figure 6-Figure 11 The folding mechanism 4 includes a first connecting rod 41 rotatably arranged in the cooling chamber 34, a second connecting rod 42 rotatably connected to the first connecting rod 41, and a third connecting rod 43 rotatably connected to the second connecting rod 42. The first connecting rod 41 is rotatably arranged in the cooling chamber 34 through a main shaft 411, and the second connecting rod 42 and the third connecting rod 43 are both limited in the cooling chamber 34 by a shaft block 44. A guide groove 343 for the shaft block 44 to limit the sliding of the cooling chamber 34 is provided in the cooling chamber 34. The first connecting rod 41 and the second connecting rod 42 are connected to the cooling chamber 34. 42 and the third connecting rod 43 are fixed to the foldable water retaining strip 35, wherein one end of the main shaft 411 passes through the heat absorbing box 31 and is rotatably arranged on the heat conducting plate 32, and a heat sensing mechanism 5 corresponding to the main shaft 411 is arranged on the heat conducting plate 32, and each group of heat sensing mechanisms 5 includes a heat conducting block 51 fixed on the heat conducting plate 32, a plug rod 52 limitedly inserted in the heat conducting block 51, two groups of abutment columns 53 fixed on the plug rod 52, and an abutment plate 54 fixed on the main shaft 411, The abutment plate 54 is fixed to the end of the main shaft 411 away from the first connecting rod 41, and the end of the abutment column 53 away from the insertion rod 52 corresponds to and contacts the abutment plate 54 one by one. The heat conductive block 51 is filled with a heat sensitive material, which can be a heat expansion alloy. The heat expansion alloy will expand when the temperature rises and shrink when it cools. The heat sensitive material expands when the temperature of the battery cell 22 rises, thereby controlling the movement of the insertion rod 52 and the abutment column 53, and abutting the abutment plate 54 to control the rotation of the main shaft 411 and the first connecting rod 41. The first connecting rod 41, the second connecting rod 42 and the third connecting rod 43 cooperate to control the foldable water retaining strip 35 to be adjusted from a vertical state to a bent state, thereby increasing the contact area between the coolant and the heat dissipation channel. Increasing the contact area can improve the heat exchange efficiency between the coolant and the heat source, so that more heat can be effectively taken away, further improving the heat dissipation effect of the local area of ​​the battery pack 2, and reducing the temperature above the corresponding battery cell 22.

[0046] Specifically, refer to Figure 7 and Fig. 9The end of the foldable water retaining strip 35 away from the first connecting rod 41 passes through the cooling chamber 34 and is inserted into the slot 311 opened in the heat absorption box 31. A plurality of winding shafts 312 are rotatably arranged in the slot 311. The winding shafts 312 correspond to the foldable water retaining strip 35 one by one. The end of the foldable water retaining strip 35 away from the first connecting rod 41 is fixed on the corresponding winding shaft 312 and is wound around the winding shaft 312. A first torsion spring 313 is provided between the winding shaft 312 and the slot 311. The two ends of the first torsion spring 313 are respectively welded between the winding shaft 312 and the slot 311. After the foldable water retaining strip 35 is subjected to the pulling force of the first connecting rod 41, the second connecting rod 42 and the third connecting rod 43, the part of the foldable water retaining strip 35 wound around the winding shaft 312 can be unwound under the action of the pulling force, and adjusted from a vertical state to a bent state, thereby forming a heat dissipation channel in a bent state.

[0047] Through the cooperation of the above-mentioned structures, not only can the heat be dissipated in each zone area of ​​the battery pack 2 through zone cooling, but also the overheated battery cells 22 can be further cooled in a targeted manner through the cooperation of the folding mechanism 4 and the thermal sensing mechanism 5, thereby further reducing the risk of thermal runaway.

[0048] During operation: when the temperature above the single battery unit 22 is too high, the high temperature is transferred to the heat-sensitive material in the heat-conducting block 51 through the heat-conducting block 51. The heat-sensitive material expands when the temperature rises, thereby controlling the insertion rod 52 to move outward. When the insertion rod 52 moves, the abutting column 53 is controlled to abut against the abutting plate 54. After the abutting plate 54 is abutted by an external force, the main shaft 411 is controlled to rotate. After the main shaft 411 rotates, it drives the first connecting rod 41, the second connecting rod 42 and the third connecting rod 43 to rotate, and the shaft block 44 is limited in the liquid inlet 341. The foldable water retaining bar 35 is folded and the first connecting rod 41, the second connecting rod 42 and the third connecting rod 43 are folded. When the foldable water retaining bar 35 is subjected to the tensile force, the part of the foldable water retaining bar 35 wound around the winding shaft 312 is unwound, and the winding shaft 312 is controlled to rotate under the torsion of the first torsion spring 313. At this time, the foldable water retaining bar 35 is adjusted from the original vertical state to the bent state, thereby forming a bent heat dissipation channel in the cooling chamber 34, increasing the contact area between the coolant and the heat dissipation channel, and improving the heat exchange efficiency.

[0049] When the temperature above the single battery cell 22 is cooled, the heat-sensitive material begins to shrink. At this time, under the control of the torque of the first torsion spring 313, the winding shaft 312 is driven to reverse again and the foldable water retaining bar 35 is controlled to be wound outside the winding shaft 312. At this time, after the foldable water retaining bar 35 is subjected to the pulling force from the winding shaft 312, it pulls and controls the first connecting rod 41, the second connecting rod 42 and the third connecting rod 43 to reset.

[0050] Further, refer to Figure 8 as well as Figure 12-14 A torsion mechanism 6 is provided between each of the four groups of housings 222. The torsion mechanism 6 includes a rotating wheel 61 rotatably provided on the mounting plate 21 and a cam 62 fixed on the rotating wheel 61. The rotating wheel 61 is rotatably provided on the mounting plate 21 through a rotating shaft 63. A second torsion spring 64 is provided on the rotating shaft 63. The second torsion spring 64 is wound around the rotating shaft 63. Both ends of the second torsion spring 64 are respectively welded between the mounting plate 21 and the rotating wheel 61. A pull rope 65 is provided between the multiple groups of cams 62 arranged vertically. An electric push rod 66 is also provided in the cabin 1. The output end of the electric push rod 66 is connected to the pull rope 65.

[0051] Specifically, the rotating wheel 61 is arranged between each four groups of shells 222, and the rotating wheel 61 is designed in a windmill shape. The four sides of the rotating wheel 61 are respectively fitted with the side close to each four groups of shells 222. The pull rope 65 is fixed to the end of the cam 62 away from the rotating shaft 63, and the initial state of the electric push rod 66 is an extended state. The heat conducting plate 32 is also provided with a patch temperature sensor 9 corresponding to the electric push rod 66. The patch temperature sensor 9 is connected to the controller 8 through a wire signal, and the controller 8 is connected to the electric push rod 66 through a wire signal. When the temperature of a single battery unit 22 is too high, The SMD temperature sensor 9 converts the detected temperature value into temperature data information and sends it to the controller 8. After receiving the data transmitted by the SMD temperature sensor 9, the controller 8 controls the electric push rod 66 to retract. At this time, the pull rope 65 pulls the cam 62 in the direction of the retraction of the electric push rod 66. As the cam 62 rotates, the rotating wheel 61 is controlled to rotate. During the rotation of the rotating wheel 61, it abuts against the shell 222, so that the shells 222 are separated from each other. The increase in the distance between the battery cells 22 can improve air circulation, thereby promoting the heat dissipation of the battery column 221 and further preventing the occurrence of thermal runaway.

[0052] Specifically, a track 213 is provided on the mounting plate 21 for limiting the movement of the outer shell 222, and a slider 214 is slidably connected to the track 213. The slider 214 is fixed on the outer shell 222, and a spring 215 is provided between the slider 214 and the track 213. After the outer shell 222 is subjected to the rotational abutment from the rotating wheel 61, it can move along the track 213 through the slider 214, thereby further improving the stability of the outer shell 222 during the movement process, and the setting of the spring 215 can facilitate the resetting of the outer shell 222.

[0053] Further, see Figure 12-13, multiple groups of main heat dissipation ports 211 are provided on the upper and lower mounting plates 21, wherein the main heat dissipation ports 211 are located in the corresponding shell 222, and multiple groups of compensation heat dissipation ports 212 are also provided on the upper and lower mounting plates 21, wherein the compensation heat dissipation ports 212 are located outside the corresponding shell 222. When the shell 222 is in an initial state, the main heat dissipation ports 211 provided on the upper and lower mounting plates 21 can ventilate and dissipate heat in the shell 222. When the shells 222 are away from each other, the compensation heat dissipation ports 212 located outside the corresponding shell 222 can also be located in the shell 222. By cooperating with the additional compensation heat dissipation ports 212 and the main heat dissipation ports 211, the ventilation effect of the shell 222 can be further increased.

[0054] Reference Figure 2-Figure 3 A fan 15 is provided on one side of the cabin 1, and a honeycomb vent is provided on the other side of the cabin 1. The fan 15 is connected to the controller 8 through a wire signal. After the controller 8 controls the fan 15 to start, the fan 15 discharges the temperature in the cabin 1 to the outside.

[0055] During operation: when the temperature of a single battery cell 22 is too high, the corresponding SMD temperature sensor 9 converts the detected temperature value into temperature data information and sends it to the controller 8. After receiving the data transmitted by the SMD temperature sensor 9, the controller 8 controls the corresponding electric push rod 66 to retract. At this time, the electric push rod 66 pulls the corresponding pull rope 65 to move together. The pull rope 65 pulls the cam 62 to rotate in the direction of the retraction of the electric push rod 66. At this time, as the cam 62 rotates, the rotating wheel 61 is controlled to rotate. The rotating wheel 61 abuts against the shell 222, so that the corresponding shells 222 move away from each other along the direction of the track 213 under the sliding action of the slider 214. At this time, the distance between the shells 222 increases, and the compensating heat dissipation port 212 located outside the corresponding shell 222 can also be in the shell 222. The cooperation of the main heat dissipation port 211 and the compensating heat dissipation port 212 increases the ventilation effect inside the shell 222.

[0056] When the temperature of the single battery cell 22 recovers, the temperature is lower than the set value of the SMD temperature sensor 9. At this time, the SMD temperature sensor 9 controls the electric push rod 66 to extend again, and controls the rotating shaft 63, cam 62 and rotating wheel 61 to reset under the torsion of the second torsion spring 64. At this time, under the elastic control of the spring 215, the slider 214 controls the housing 222 to reset again along the direction of the track 213.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the temperature in a cabin, comprising a cabin body and a temperature detector, a controller, a water tank, a circulation pump, a liquid outlet pipe and a circulation pipe arranged in the cabin body, characterized in that: The cabin is also provided with a battery pack and a partition cooling mechanism located above the battery pack; The battery pack includes a mounting plate symmetrically arranged up and down and a plurality of battery units arranged between the mounting plates, each of the battery units includes a plurality of battery columns, and a shell is movably provided outside each of the battery columns; The partition cooling mechanism includes a heat absorption box arranged in the cabin and a heat conduction plate arranged below the heat absorption box, the heat absorption box and the heat conduction plate are connected by fins, a plurality of cooling chambers are provided in the heat absorption box, the cooling chambers correspond to the positions of the battery cells one by one, a liquid inlet is provided in the cooling chamber, wherein the liquid inlet is connected to the circulation pump through a liquid outlet pipe, a liquid outlet is also provided in the cooling chamber, wherein the liquid outlet is connected to the water tank through a circulation pipe, the temperature detector and the controller are connected by wire signals, the controller and the circulation pump are connected by wire signals, each group of the cooling chambers is provided with at least two groups of foldable water retaining strips, and each group of the foldable water retaining strips is provided with a folding mechanism; The folding mechanism comprises a first connecting rod rotatably arranged in the cooling chamber, a second connecting rod rotatably connected to the first connecting rod, and a third connecting rod rotatably connected to the second connecting rod, wherein the first connecting rod is rotatably arranged in the cooling chamber via a main shaft, and the first connecting rod, the second connecting rod and the third connecting rod are all fixed to the foldable water retaining strip; One end of the main shaft passes through the heat absorption box and is rotatably arranged on the heat conducting plate, on which a heat sensing mechanism corresponding to the main shaft is arranged, and each group of the heat sensing mechanisms includes a heat conducting block fixed on the heat conducting plate, a plug rod limitedly inserted in the heat conducting block, two groups of abutment columns fixed on the plug rod, and an abutment plate fixed on the main shaft, the abutment columns correspond to and contact the abutment plates one by one, and the heat conducting block is filled with a heat sensitive material.

2. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 1 is characterized in that: The second connecting rod and the third connecting rod are both limited in position in the cooling cavity by shaft blocks.

3. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 1 is characterized in that: One end of the foldable water retaining strip away from the first connecting rod passes through the cooling cavity and is inserted into a slot opened in the heat absorption box. A plurality of winding shafts are rotatably arranged in the slot. One end of the foldable water retaining strip away from the first connecting rod is fixed on the corresponding winding shaft and wound around the outside of the winding shaft. A first torsion spring is arranged between the winding shaft and the slot.

4. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 1 is characterized in that: A torsion mechanism is provided between each four groups of the shells, and the torsion mechanism includes a rotating wheel rotatably provided on the mounting plate and a cam fixed on the rotating wheel, the rotating wheel is rotatably provided on the mounting plate through a rotating shaft, a second torsion spring is provided on the rotating shaft, a pull rope is provided between the multiple groups of cams arranged vertically, and an electric push rod is also provided in the cabin, and the output end of the electric push rod is connected to the pull rope; The heat conducting plate is provided with a patch type temperature sensor corresponding to the electric push rod one by one, the patch type temperature sensor is connected to the controller through a wire signal, and the controller is connected to the electric push rod through a wire signal.

5. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 4 is characterized in that: The mounting plate is provided with a track for limiting movement of the housing, a slider is slidably connected in the track, the slider is fixed on the housing, and a spring is provided between the slider and the track.

6. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 5 is characterized in that: Both the upper and lower groups of mounting plates are provided with a plurality of groups of main heat dissipation openings, wherein the main heat dissipation openings are located in the corresponding outer shell.

7. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 6 is characterized in that: A plurality of groups of compensating heat dissipation openings are also provided on the upper and lower groups of the mounting plates, and the compensating heat dissipation openings are located outside the corresponding housing.

8. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 2 is characterized in that: A guide groove for limiting sliding of the shaft block is provided in the cooling cavity.

9. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 4 is characterized in that: The rotating wheel is arranged between each four groups of outer shells. The rotating wheel is designed in a windmill shape. The four sides of the rotating wheel are respectively fitted with one side close to each four groups of outer shells.

10. The explosion-proof sodium-ion battery energy storage module capable of automatically adjusting the cabin temperature according to claim 1, characterized in that: A fan is arranged on one side of the cabin, a honeycomb-shaped vent is opened on the other side of the cabin, and the fan is connected to a controller through a wire signal.

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