Energy storage lithium battery temperature control device, management system and management method

Abstract

The present invention relates to an energy storage technology, specifically to an energy storage lithium battery temperature control device, management system and management method, the device includes an insulation shell, there is a gap between the inner wall of the insulation shell and the outer wall of the lithium battery module, the periphery of the lithium battery module is provided with multiple heat dissipation channels, the heat dissipation channels are in the gap; the multiple heat dissipation channels are divided into two groups, the number of heat dissipation channels in the two groups is the same, and the wind direction is opposite. The lithium battery temperature control device in the present invention can cover the lithium battery module inside the insulation shell under low temperature environment and isolate it from the external environment, and when the internal temperature of the insulation shell is higher than the ambient temperature and exceeds the preset value, the lithium battery module in the insulation shell is cooled by pumping air into the heat dissipation channel through the fan, and at the same time, the mechanical control structure is used to drive the shutters in the heat dissipation frame to open, so as to realize heat exchange between the inside and outside of the insulation shell, and further improve the heat dissipation efficiency.

Description

Technical Field

[0001] The present invention relates to an energy storage technology, in particular to an energy storage lithium battery temperature control device, a management system and a management method. Background Art

[0002] As a core energy storage module, the performance and safety of lithium-ion batteries have attracted much attention. Among them, the thermal management scheme has an important impact on the temperature characteristics of lithium-ion battery modules. The present invention improves the temperature management according to the temperature characteristics of lithium-ion battery modules, in order to improve battery performance and safety.

[0003] It is currently a consensus that lithium batteries are greatly affected by temperature. High temperatures will shorten their lifespan and increase safety risks, while low temperatures will reduce their capacity and voltage. The optimal operating temperature of lithium batteries is generally between 15°C and 35°C.

[0004] Thermal management solutions can be divided into two types according to the control method: passive and active. Passive thermal management solutions mainly rely on natural convection, radiation and conduction to dissipate heat.

[0005] Active thermal management solutions use more flexible methods, such as liquid cooling, gas cooling, phase change materials, etc., to achieve precise control of battery pack temperature.

[0006] Combined with the actual application scenarios, active thermal management solutions are often used for temperature control. However, for the energy storage core, when the capacity and voltage drop are large, the existing liquid cooling and gas cooling have relatively limited effects. From the perspective of environmental protection and energy saving, open natural convection combined with gas cooling or liquid cooling is a relatively good method. However, considering the low temperature environment (such as winter), the open structure is prone to cause the ambient temperature to affect the working temperature of the lithium battery. Summary of the invention

[0007] The object of the present invention is to provide a temperature control device, management system and management method for a lithium energy storage battery to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A temperature control device for an energy storage lithium battery comprises a heat preservation shell, wherein the inner space of the heat preservation shell is adapted to the shape of a lithium battery module, a gap is provided between the inner wall of the heat preservation shell and the outer wall of the lithium battery module, a plurality of heat dissipation channels are arranged on the periphery of the lithium battery module, and the heat dissipation channels are located in the gap; wherein the plurality of heat dissipation channels are divided into two groups, the number of heat dissipation channels in the two groups is the same, and the wind directions are opposite;

[0010] The heat-insulating shell is provided with a plurality of vents, each of which is sealed with a heat dissipation frame, and the heat dissipation frame is provided with a plurality of louvers arranged horizontally, and the plurality of louvers are arranged overlapping with each other in the vertical direction;

[0011] One end of the two groups of heat dissipation channels is connected to a fan respectively, and the two fans are connected via a transmission structure, and the transmission structure is also matched with the louvers in the heat dissipation frame via a mechanical control structure;

[0012] When the transmission structure drives the two fans to operate synchronously, the mechanical control structure drives the louvers to rotate and open.

[0013] The energy storage lithium battery temperature control device as described above: the transmission structure includes a servo motor fixedly mounted on one side of the outer wall of the insulation shell, the output end of the servo motor is connected to a transmission shaft, and the transmission shaft is rotatably connected to the outer wall of the insulation shell;

[0014] Another transmission shaft is rotatably arranged on the other side of the outer wall of the heat preservation shell, the two transmission shafts are parallel to each other, and a worm gear is coaxially fixed to each of the two worm gears; each of the two worm gears is matched with a worm wheel, and the two worm wheels are respectively connected to the impeller shafts of the two fans;

[0015] Among them, a rotating shaft perpendicular to the two transmission shafts is also rotatably arranged on the outer wall of the insulation shell, a No. 1 bevel gear is fixed to one end of one transmission shaft, a No. 4 bevel gear is fixed to one end of the other transmission shaft, and a No. 2 bevel gear and a No. 3 bevel gear are respectively fixed to the two ends of the rotating shaft;

[0016] The third bevel gear meshes with the fourth bevel gear, and the first bevel gear meshes with the second bevel gear.

[0017] The energy storage lithium battery temperature control device as described above: a pin hole is opened on the side of the heat dissipation frame, a pin shaft rotatably matched with the pin hole is fixed on the side of the louver blade, the end of the pin shaft is fixedly connected to the connecting piece, and the end of the connecting piece is fixedly provided with a convex column;

[0018] The boss is rotationally matched with the adjusting member, and the mechanical control structure is connected to the adjusting member.

[0019] The energy storage lithium battery temperature control device as described above: the mechanical control structure comprises a sliding sleeve slidably arranged on the transmission shaft, and a rotating sleeve rotatably arranged on the sliding sleeve, and the rotating sleeve is connected to the adjusting member through a push-pull rod;

[0020] One end of the push-pull rod is rotatably matched with the rotating sleeve, and the other end of the push-pull rod is rotatably matched with the insertion shaft, and the insertion shaft is fixedly inserted on the adjusting member;

[0021] The transmission shaft is also provided with a centrifugal assembly and a reset assembly. The centrifugal assembly can drive the rotating sleeve and the sliding sleeve to slide along the axial direction of the transmission shaft when the transmission shaft rotates.

[0022] The energy storage lithium battery temperature control device as described above: the centrifugal assembly comprises a turntable fixed on the transmission shaft, a slider slidably arranged on the turntable along the radial direction of the turntable, and a connecting rod connecting the slider and the sliding sleeve;

[0023] The edge of the sliding sleeve is formed with a plurality of support arms distributed at equal intervals along the circumference, and the support arms extend radially outwardly along the sliding sleeve. One end of the connecting rod is rotationally matched with the sliding block, and the other end of the connecting rod is rotationally matched with the end of the support arm.

[0024] The energy storage lithium battery temperature control device as described above: the turntable is provided with a plurality of slide grooves along its radial direction, the slider is slidably arranged in the slide grooves, and the slide grooves penetrate the turntable through a through passage, a connecting column is slidably arranged in the through passage, one end of the connecting column is fixed to the slider, and the other end is fixed to the counterweight block.

[0025] The energy storage lithium battery temperature control device as described above: the rotating sleeve is arranged outside the sliding sleeve, and a plurality of concave holes are opened on the outer wall of the sliding sleeve at equal intervals along the circumference, and balls are rollingly embedded in the concave holes;

[0026] A circle of concave channels is provided on the inner wall of the rotating sleeve, and the balls are embedded between the concave holes and the concave channels.

[0027] The energy storage lithium battery temperature control device as described above: the reset assembly comprises a sleeve fixedly arranged on the transmission shaft, a spring is sleeved on the outer wall of the sleeve facing the rotating sleeve, and one end of the spring away from the sleeve is sleeved on the sliding sleeve;

[0028] The outer walls of the sliding sleeve and the shaft sleeve are both formed with steps, and the two ends of the spring are respectively in conflict with the steps on the sliding sleeve and the steps on the shaft sleeve, and the spring maintains pre-compression.

[0029] A temperature management system for an energy storage lithium battery comprises the above-mentioned temperature control device for an energy storage lithium battery, and also comprises a micro-control module installed on the outer wall of the insulation shell, wherein a plurality of temperature sensors are arranged inside the insulation shell, and the plurality of temperature sensors establish communication with the servo motor through the micro-control module.

[0030] A method for managing the temperature of an energy storage lithium battery using the above system comprises the following steps:

[0031] Step 1: temperature signal capture, using temperature sensors distributed at various points on the lithium battery module to collect and monitor the temperatures of multiple points in the insulation shell in real time;

[0032] Step 2: Data processing: performing weighted average calculation on the multiple sets of data collected in step 1 to obtain average temperature data;

[0033] Step three, comparison control, compares the average temperature data calculated in step two with the preset heat dissipation start temperature value; if the average temperature exceeds the preset temperature, a heat dissipation signal is sent to the servo motor.

[0034] Compared with the prior art, the beneficial effect of the present invention is that the lithium battery temperature control device in the present invention can cover the lithium battery module inside the insulation shell under low temperature environment, and keep the inside of the insulation shell isolated from the external environment, so as to avoid the excessively low ambient temperature being directly transmitted to the lithium battery module inside the insulation shell, thereby affecting its capacitance and voltage.

[0035] When the internal temperature of the insulation shell is higher than the ambient temperature and exceeds the preset value, the fan is set to pump air into the heat dissipation channel to cool the lithium battery module in the insulation shell. At the same time, the mechanical control structure is used to drive the louvers in the heat dissipation frame to open, so as to realize heat exchange between the inside and outside of the insulation shell, thereby further improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the temperature control device of the energy storage lithium battery.

[0037] Figure 2 This is a structural schematic diagram of another aspect of the energy storage lithium battery temperature control device.

[0038] Figure 3 This is another structural schematic diagram of the energy storage lithium battery temperature control device from another perspective.

[0039] Figure 4 This is a structural schematic diagram of another aspect of the temperature control device for energy storage lithium batteries.

[0040] Figure 5 This is a schematic diagram of the structure after the insulation shell is removed from the energy storage lithium battery temperature control device.

[0041] Figure 6 This is a schematic diagram of the structure of the fan and heat dissipation channel in the energy storage lithium battery temperature control device.

[0042] Figure 7 for Figure 6 Schematic diagram of the structure from another perspective.

[0043] Figure 8 This is a schematic diagram after one of the heat dissipation frames and the louvers thereon are removed from the insulation shell.

[0044] Fig. 9 for Figure 8 Schematic diagram of the structure from another perspective.

[0045] Fig.10 For Fig. 9 Schematic diagram of removing the louver from the heat dissipation frame based on the louver.

[0046] Fig.11 for Fig.10 Enlarged view of point A in the middle.

[0047] Fig.12 Schematic diagram of the mechanical control structure.

[0048] Fig.13 For Fig.12 Schematic diagram after removing the drive shaft.

[0049] Fig.14 for Fig.13 Schematic diagram from another perspective.

[0050] Fig.15 For Fig.14 Schematic diagram of disassembling one of the connecting rods and sliders based on the .

[0051] Fig.16 For Fig.15 Schematic diagram of the rotating sleeve after being removed from the sliding sleeve.

[0052] Fig.17 For Fig.16 Schematic diagram after the spring is further removed.

[0053] In the figure: 1. lithium battery module; 2. insulation shell; 3. servo motor; 4. transmission shaft; 5. worm; 6. worm gear; 7. fan; 8. heat dissipation channel; 9. No. 1 bevel gear; 10. No. 2 bevel gear; 11. rotating shaft; 12. No. 3 bevel gear; 13. No. 4 bevel gear; 14. heat dissipation frame; 1401. pin hole; 15. shutter blade; 1501. pin shaft; 1502. connecting piece; 1503. boss; 1504. adjusting piece; 16. turntable; 1601. slide groove; 1602. through channel; 17. slider; 18. counterweight; 19. connecting rod; 20. sliding sleeve; 2001. support arm; 21. rotating sleeve; 2101. concave channel; 22. ball bearing; 23. spring; 24. bushing; 25. push-pull rod; 26. plug shaft; 27. micro control module. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0055] See also Figure 1 to Figure 17 As an embodiment of the present invention, the energy storage lithium battery temperature control device comprises a heat preservation shell 2, wherein the heat preservation shell 2 is a double-layer structure, wherein the outer layer is made of hard alloy and the inner layer is filled with heat insulation cotton;

[0056] The use of hard alloy material can resist the risk of deformation or even rupture of the internal lithium battery module 1 caused by external impact, extrusion, etc.; similarly, the hard alloy material can also effectively reduce the probability of expansion and deformation of the internal lithium battery module 1.

[0057] The insulation shell 2 is in the shape of a box with an opening at the upper end, and the inner space of the box-shaped insulation shell 2 is adapted to the shape of the lithium battery module 1;

[0058] There is a gap between the inner wall of the insulation shell 2 and the outer wall of the lithium battery module 1, and a plurality of heat dissipation channels 8 are arranged on the periphery of the lithium battery module 1, and the heat dissipation channels 8 are located in the gap; wherein, the plurality of heat dissipation channels 8 are divided into two groups, and the number of heat dissipation channels 8 in the two groups is the same, and the wind directions are opposite, that is, the ventilation wind direction in half of the heat dissipation channels 8 is opposite to that in the other half of the heat dissipation channels 8.

[0059] Because the ventilation wind direction in half of the heat dissipation channels 8 is opposite to that in the other half of the heat dissipation channels 8, the lithium battery module 1 in the heat preservation shell 2 can be relatively evenly cooled. If the risk in all heat dissipation channels 8 is the same, it is obvious that the temperature closer to the air inlet is low, while the heat dissipation effect farther from the air inlet along the heat dissipation channels 8 is slightly poor.

[0060] The heat-insulating shell 2 is provided with a plurality of vents, each of which is sealed with a heat dissipation frame 14, wherein a plurality of louvers 15 are horizontally arranged in the heat dissipation frame 14, and the plurality of louvers 15 are arranged to overlap each other in the vertical direction;

[0061] One end of the two groups of heat dissipation channels 8 is connected to a fan 7 respectively, and the two fans 7 are connected via a transmission structure, and the transmission structure is also matched with the louver blades 15 in the heat dissipation frame 14 via a mechanical control structure;

[0062] When the transmission structure drives the two fans 7 to operate synchronously, the mechanical control structure drives the shutter blades 15 to rotate and open.

[0063] In this embodiment, when the transmission structure has not yet started working, the two fans 7 are both in a stopped state, and the temperature of the lithium battery module 1 has not reached the heat dissipation temperature; at this time, the multiple louvers 15 in the heat dissipation frame 14 overlap each other and cover the heat dissipation frame 14 to block the vents; only when the temperature of the lithium battery module 1 exceeds the preset temperature, the transmission structure will drive the two fans 7 to work to dissipate the heat of the lithium battery module 1 in the insulation shell 2; at the same time, the mechanical control structure drives the louvers 15 at the multiple vents to open, so that the interior of the insulation shell 2 can directly exchange heat with the outside of the insulation shell 2 through the vents and the heat dissipation frame 14, thereby further improving the heat dissipation rate.

[0064] The lithium battery temperature control device in the present invention can enclose the lithium battery module 1 inside the insulation shell 2 in a low temperature environment, and keep the interior of the insulation shell 2 isolated from the external environment, thereby preventing the excessively low ambient temperature from being directly transmitted to the lithium battery module 1 inside the insulation shell 2, thereby affecting its capacitance and voltage.

[0065] When the internal temperature of the insulation shell 2 is higher than the ambient temperature and exceeds the preset value, the fan 7 is provided to pump air into the heat dissipation channel 8 to cool the lithium battery module 1 in the insulation shell 2. At the same time, the mechanical control structure is used to drive the louver 15 in the heat dissipation frame 14 to open, so as to realize heat exchange between the inside and outside of the insulation shell 2, thereby further improving the heat dissipation efficiency.

[0066] As a further solution of the present invention, the transmission structure includes a servo motor 3 fixedly mounted on one side of the outer wall of the insulation shell 2, the output end of the servo motor 3 is connected to a transmission shaft 4, and the transmission shaft 4 is rotatably connected to the outer wall of the insulation shell 2;

[0067] Another transmission shaft 4 is rotatably arranged on the other side of the outer wall of the heat-insulating shell 2. The two transmission shafts 4 are parallel to each other and are coaxially fixed with a worm 5. The two worm 5 are each matched with a worm wheel 6, and the two worm wheels 6 are respectively connected to the impeller shafts of two fans 7.

[0068] A rotating shaft 11 perpendicular to the two transmission shafts 4 is rotatably provided on the outer wall of the heat preservation shell 2, a first bevel gear 9 is fixed to one end of one transmission shaft 4, a fourth bevel gear 13 is fixed to one end of the other transmission shaft 4, and a second bevel gear 10 and a third bevel gear 12 are fixed to both ends of the rotating shaft 11;

[0069] The third bevel gear 12 meshes with the fourth bevel gear 13 , and the first bevel gear 9 meshes with the second bevel gear 10 .

[0070] In this embodiment, when the internal temperature of the insulation shell 2 exceeds a preset value, a signal is sent to the servo motor 3, the servo motor 3 starts working, and drives one of the transmission shafts 4 to rotate through the output shaft at its output end, and the transmission shaft 4 drives the worm 5 thereon to rotate; at the same time, the transmission shaft 4 also drives the rotating shaft 11 to rotate through the cooperation of the first bevel gear 9 and the second bevel gear 10, and the rotating shaft 11 then drives the other transmission shaft 4 to rotate with the help of the third bevel gear 12 and the fourth bevel gear 13, thereby realizing the synchronous rotation of the two sections of the worm 5.

[0071] The two sections of the worm 5 drive the worm wheels 6 and the fans 7 on both sides to work respectively, and finally realize that the wind directions in the two groups of heat dissipation channels 8 are opposite.

[0072] As a further solution of the present invention, a pin hole 1401 is opened on the side of the heat dissipation frame 14, and a pin shaft 1501 rotatably matched with the pin hole 1401 is fixed on the side of the louver 15, and the end of the pin shaft 1501 is fixedly connected to the connecting piece 1502, and the end of the connecting piece 1502 is fixedly provided with a protruding column 1503;

[0073] The boss 1503 is rotatably matched with the adjusting member 1504 , and the mechanical control structure is connected to the adjusting member 1504 .

[0074] In this embodiment, since the louvers 15 are all controlled by the pin shaft 1501, and the pin shaft 1501 on each louver 15 is fixed to the connecting member 1502 and the boss 1503, it is only necessary to control the movement of each boss 1503 to achieve synchronous movement of multiple louvers 15, and therefore it is only necessary to control the movement of the adjustment member 1504 to achieve synchronous control of the opening and closing of multiple louvers 15.

[0075] As a further solution of the present invention, the mechanical control structure includes a sliding sleeve 20 slidably disposed on the transmission shaft 4, and a rotating sleeve 21 rotatably disposed on the sliding sleeve 20, and the rotating sleeve 21 is connected to the adjusting member 1504 through a push-pull rod 25;

[0076] Specifically, one end of the push-pull rod 25 is rotatably matched with the rotating sleeve 21, and the other end of the push-pull rod 25 is rotatably matched with the insertion shaft 26, and the insertion shaft 26 is fixedly inserted on the adjusting member 1504;

[0077] The transmission shaft 4 is also provided with a centrifugal assembly and a reset assembly. The centrifugal assembly can drive the rotating sleeve 21 and the sliding sleeve 20 to slide along the axial direction of the transmission shaft 4 when the transmission shaft 4 rotates.

[0078] In this embodiment, when the transmission shaft 4 rotates, the centrifugal force generated by the centrifugal assembly is utilized to drive the rotating sleeve 21 and the sliding sleeve 20 to slide along the axial direction of the transmission shaft 4, wherein the rotating sleeve 21 drives the plug shaft 26 to move with the help of the push-pull rod 25, and finally drives the adjusting member 1504 to move, so as to synchronously open the multiple louvers 15; and when the transmission shaft 4 stops rotating, since the centrifugal assembly cannot activate the centrifugal force, the rotating sleeve 21 and the sliding sleeve 20 are reset under the action of the reset assembly, and the multiple louvers 15 are overlapped and closed again.

[0079] As a further solution of the present invention, the centrifugal assembly includes a turntable 16 fixed on the transmission shaft 4, a slider 17 slidably disposed on the turntable 16 along the radial direction of the turntable 16, and a connecting rod 19 connecting the slider 17 and the sliding sleeve 20;

[0080] The edge of the sleeve 20 is formed with a plurality of support arms 2001 equidistantly distributed along the circumference, and the support arms 2001 extend radially outward along the sleeve 20 . One end of the connecting rod 19 is rotationally engaged with the slider 17 , and the other end of the connecting rod 19 is rotationally engaged with the end of the support arm 2001 .

[0081] In this embodiment, when the transmission shaft 4 rotates at a high speed, the turntable 16 is driven to rotate, and the multiple sliders 17 distributed radially on the turntable 16 will slide outward, and drive the support arm 2001 and the sliding sleeve 20 away from the turntable 16 through the connecting rod 19. The sliding sleeve 20 moves away from the turntable 16 while following the rotation of the turntable 16 under the constraint of the connecting rod 19; however, the rotating sleeve 21 will only slide in the direction away from the turntable 16 under the constraint of the push-pull rod 25, and will not rotate with the sliding sleeve 20.

[0082] As a further solution of the present invention, a plurality of slide grooves 1601 are opened on the turntable 16 along its radial direction, the slider 17 is slidably set in the slide groove 1601, and the slide groove 1601 passes through the turntable 16 through the through channel 1602, and a connecting column is slidably set in the through channel 1602, one end of the connecting column is fixed to the slider 17, and the other end is fixed to the counterweight block 18.

[0083] In this embodiment, the weight of the slider 17 is increased by providing a counterweight 18. It should be noted that the counterweight 18 is made of high-density metal, such as a lead block. Therefore, as the counterweight 18 rotates following the slider 17, the centrifugal force can be increased. In addition, the slide groove 1601 and the through channel 1602 are provided to limit the movement of the slider 17 and the connecting column to the radial direction of the turntable 16, thereby avoiding deviation during high-speed rotation.

[0084] As a further solution of the present invention, the rotating sleeve 21 is sleeved on the outside of the sliding sleeve 20, and a plurality of concave holes are opened on the outer wall of the sliding sleeve 20 at equal intervals along the circumference, and balls 22 are rollingly embedded in the concave holes;

[0085] A circle of grooves 2101 is formed on the inner wall of the rotating sleeve 21 , and the balls 22 are embedded between the grooves and the grooves 2101 .

[0086] In this embodiment, by setting the recessed hole, the groove 2101, and the ball 22, the rotating sleeve 21 and the sliding sleeve 20 can only rotate relative to each other, and cannot produce axial sliding; therefore, in the process of the connecting rod 19 driving the sliding sleeve 20 away from the turntable 16, the rotating sleeve 21 will also move away from the turntable 16 synchronously, and the rotating sleeve 21 can rotate without rotating with the sliding sleeve 20.

[0087] As a further solution of the present invention, the reset assembly includes a sleeve 24 fixedly arranged on the transmission shaft 4, a spring 23 is sleeved on the outer wall of the sleeve 24 on one side facing the rotating sleeve 21, and one end of the spring 23 away from the sleeve 24 is sleeved on the sliding sleeve 20;

[0088] The outer walls of the sliding sleeve 20 and the shaft sleeve 24 are both formed with steps, and the two ends of the spring 23 are respectively in conflict with the steps on the sliding sleeve 20 and the steps on the shaft sleeve 24, and the spring 23 maintains pre-compression.

[0089] In this embodiment, in the absence of centrifugal force, the spring 23 gives the sliding sleeve 20 an elastic force to move closer to the turntable 16, thereby keeping the louver 15 in a closed state; only when the transmission shaft 4 drives the turntable 16 to rotate at a high speed, the centrifugal force generated by the slider 17 and the counterweight block 18 is sufficient to overcome the elastic force of the spring 23 and further compress the spring 23, so the sliding sleeve 20 and the rotating sleeve 21 will move away from the turntable 16.

[0090] In addition, the present invention also proposes a temperature management system for a lithium energy storage battery, including the above-mentioned temperature control device for a lithium energy storage battery, and also including a micro-control module 27 installed on the outer wall of the insulation shell 2, and a plurality of temperature sensors are arranged inside the insulation shell 2, and the plurality of temperature sensors establish communication with the servo motor 3 through the micro-control module 27.

[0091] When the temperature sensor in the heat-insulating shell 2 detects that the average temperature exceeds a preset value, a signal is sent to the micro-control module 27 ; the micro-control module 27 then sends a heat dissipation signal to the servo motor 3 .

[0092] Finally, the present invention also proposes a method for managing the temperature of an energy storage lithium battery using the above system, comprising the following steps:

[0093] Step 1: temperature signal capture, using temperature sensors distributed at various points on the lithium battery module 1 to collect and monitor the temperatures of multiple points in the insulation shell 2 in real time;

[0094] Step 2: Data processing: performing weighted average calculation on the multiple sets of data collected in step 1 to obtain average temperature data;

[0095] Step three, comparison control, compares the average temperature data calculated in step two with the preset heat dissipation start temperature value; if the average temperature exceeds the preset temperature, a heat dissipation signal is sent to the servo motor 3.

[0096] It should be noted that the above-mentioned preset heat dissipation startup temperature value is manually set and can be modified or adjusted through external devices.

[0097] The above embodiments are exemplary rather than restrictive, so the technical solutions of the present invention that can be implemented in other specific forms without departing from the spirit or basic features of the present invention are all included in the present invention.

Claims

1. A temperature control device for an energy storage lithium battery, comprising a heat preservation shell (2), wherein the internal space of the heat preservation shell (2) is adapted to the outer shape of a lithium battery module (1), and there is a gap between the inner wall of the heat preservation shell (2) and the outer wall of the lithium battery module (1), characterized in that: A plurality of heat dissipation channels (8) are arranged on the periphery of the lithium battery module (1), and the heat dissipation channels (8) are located in the gap; wherein the plurality of heat dissipation channels (8) are divided into two groups, the number of heat dissipation channels (8) in the two groups is the same, and the wind directions are opposite; The heat-insulating shell (2) is provided with a plurality of vents, each of which is sealed with a heat dissipation frame (14), a plurality of louvers (15) are horizontally arranged in the heat dissipation frame (14), and the plurality of louvers (15) are arranged to overlap each other in a vertical direction; One end of each of the two groups of heat dissipation channels (8) is connected to a fan (7), and the two fans (7) are connected via a transmission structure, and the transmission structure is also matched with the louver blades (15) in the heat dissipation frame (14) via a mechanical control structure; When the transmission structure drives the two fans (7) to operate synchronously, the mechanical control structure drives the shutter blades (15) to rotate and open; The transmission structure comprises a servo motor (3) fixedly mounted on one side of the outer wall of the heat-insulating shell (2), the output end of the servo motor (3) being connected to a transmission shaft (4), and the transmission shaft (4) being rotatably connected to the outer wall of the heat-insulating shell (2); A pin hole (1401) is provided on the side of the heat dissipation frame (14); a pin shaft (1501) rotatably matched with the pin hole (1401) is fixed to the side of the louver blade (15); an end of the pin shaft (1501) is fixedly connected to a connecting piece (1502); and a protruding column (1503) is fixedly provided on the end of the connecting piece (1502); The boss (1503) is rotationally matched with the adjusting member (1504), and the mechanical control structure is connected to the adjusting member (1504); The mechanical control structure comprises a sliding sleeve (20) slidably arranged on the transmission shaft (4), and a rotating sleeve (21) rotatably arranged on the sliding sleeve (20), wherein the rotating sleeve (21) is connected to the adjusting member (1504) via a push-pull rod (25); One end of the push-pull rod (25) is rotationally matched with the rotating sleeve (21), and the other end of the push-pull rod (25) is rotationally matched with the insertion shaft (26), and the insertion shaft (26) is fixedly inserted on the adjusting member (1504); A centrifugal assembly and a reset assembly are also provided on the transmission shaft (4); the centrifugal assembly can drive the rotating sleeve (21) and the sliding sleeve (20) to slide along the axial direction of the transmission shaft (4) when the transmission shaft (4) rotates.

2. The temperature control device for an energy storage lithium battery according to claim 1, characterized in that: Another transmission shaft (4) is rotatably arranged on the other side of the outer wall of the heat-insulating shell (2); the two transmission shafts (4) are parallel to each other and are coaxially fixed with a worm gear (5); the two worm gears (5) are each matched with a worm wheel (6), and the two worm wheels (6) are respectively connected to the impeller shafts of two fans (7); A rotating shaft (11) is rotatably arranged on the outer wall of the heat-insulating shell (2) and is perpendicular to the two transmission shafts (4); a first bevel gear (9) is fixed to one end of one of the transmission shafts (4); a fourth bevel gear (13) is fixed to one end of the other transmission shaft (4); and a second bevel gear (10) and a third bevel gear (12) are respectively fixed to both ends of the rotating shaft (11); The third bevel gear (12) meshes with the fourth bevel gear (13), and the first bevel gear (9) meshes with the second bevel gear (10).

3. The temperature control device for an energy storage lithium battery according to claim 1, characterized in that: The centrifugal assembly comprises a turntable (16) fixed on the transmission shaft (4), a sliding block (17) arranged on the turntable (16) to slide along the radial direction of the turntable (16), and a connecting rod (19) connecting the sliding block (17) and the sliding sleeve (20); The edge of the sliding sleeve (20) is formed with a plurality of support arms (2001) distributed at equal intervals along the circumference, and the support arms (2001) extend radially outwardly along the sliding sleeve (20), one end of the connecting rod (19) is rotationally engaged with the sliding block (17), and the other end of the connecting rod (19) is rotationally engaged with the end of the support arm (2001).

4. The energy storage lithium battery temperature control device according to claim 3, characterized in that: The turntable (16) is provided with a plurality of slide grooves (1601) along its radial direction, the slider (17) is slidably arranged in the slide grooves (1601), and the slide grooves (1601) penetrate the turntable (16) through a through passage (1602), a connecting column is slidably arranged in the through passage (1602), one end of the connecting column is fixed to the slider (17), and the other end is fixed to the counterweight (18).

5. The temperature control device for energy storage lithium battery according to claim 4, characterized in that: The rotating sleeve (21) is sleeved on the outside of the sliding sleeve (20), and a plurality of concave holes are formed on the outer wall of the sliding sleeve (20) at equal intervals along the circumference, and balls (22) are rollingly embedded in the concave holes; A circle of recessed channels (2101) is formed on the inner wall of the rotating sleeve (21), and the balls (22) are embedded between the recessed holes and the recessed channels (2101).

6. The energy storage lithium battery temperature control device according to claim 3, characterized in that: The reset assembly comprises a shaft sleeve (24) fixedly arranged on the transmission shaft (4), a spring (23) being sleeved on an outer wall of the shaft sleeve (24) on a side facing the rotating sleeve (21), and an end of the spring (23) away from the shaft sleeve (24) being sleeved on the sliding sleeve (20); The outer walls of the sliding sleeve (20) and the shaft sleeve (24) are both formed with steps, and the two ends of the spring (23) are respectively in contact with the steps on the sliding sleeve (20) and the steps on the shaft sleeve (24), and the spring (23) maintains a preload.

7. A temperature management system for an energy storage lithium battery, comprising the temperature control device for an energy storage lithium battery according to any one of claims 2 to 6, characterized in that: It also includes a micro-control module (27) mounted on the outer wall of the heat-insulating shell (2), wherein a plurality of temperature sensors are arranged inside the heat-insulating shell (2), and the plurality of temperature sensors establish communication with the servo motor (3) via the micro-control module (27).

8. A method for managing the temperature of an energy storage lithium battery using the energy storage lithium battery temperature management system as claimed in claim 7, characterized in that: The steps include: Step 1: temperature signal capture, using temperature sensors distributed at various points on the lithium battery module (1) to collect and monitor the temperatures of multiple points in the thermal insulation shell (2) in real time; Step 2: Data processing: performing weighted average calculation on the multiple sets of data collected in step 1 to obtain average temperature data; Step 3: comparison control, comparing the average temperature data calculated in step 2 with the preset heat dissipation start temperature value; If the average temperature exceeds the preset temperature, a heat dissipation signal is sent to the servo motor (3).

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