A sodium ion battery pack and its charging and discharging system

Abstract

The invention discloses a sodium ion battery pack and a charging and discharging system thereof, which relate to the field of sodium ion battery packs. The base comprises a base, wherein a protruding block is fixedly connected to the outer surface of the base, an outer shell is arranged on the top of the protruding block, a wiring port is fixedly connected to the top of the outer shell, an insertion column is fixedly connected to the bottom of the outer shell, the outer surface of the insertion column is slidably connected to the inner wall of the protruding block, a lower group mechanism is fixedly connected to the top of the base, and an upper group mechanism is fixedly connected to the top edge of the base. When the battery pack is used for charging and discharging, an external device needs to be inserted into the wiring port and is in contact with the lower group mechanism and the upper group mechanism, so as to realize the charging and discharging of the sodium ion battery pack and ensure the performance and safety of the battery pack during the charging and discharging process.

Description

Technical Field

[0001] The present invention relates to the technical field of sodium ion battery packs, and in particular to a sodium ion battery pack and a charging and discharging system thereof. Background Art

[0002] Sodium-ion battery packs are a collection of batteries composed of multiple sodium-ion battery cells connected in series, parallel or series-parallel. The role of sodium-ion battery packs is to provide the required electrical energy for various devices and systems. Compared with a single sodium-ion battery cell, the battery pack can provide higher voltage and larger capacity to meet the power and energy requirements of different application scenarios.

[0003] Since a sodium-ion battery pack is a battery collection composed of multiple sodium-ion battery cells connected in series, parallel, or series-parallel, when a single sodium-ion battery is charged and discharged for a long time, the electrode material ages and the structure changes, which will also cause the electrolyte to decompose, produce gas and insoluble products, and reduce the conductivity and ion transmission capacity of the electrolyte. These factors will reduce the efficiency of charging and discharging, but it will also be difficult to open the battery pack casing and replace a single battery in the battery pack. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention solves the technical problems thereof by adopting the following technical solutions: a sodium ion battery pack according to the present invention comprises a base, the outer surface of the base is fixedly connected with a protruding block, the top of the protruding block is provided with an outer shell, the top of the outer shell is fixedly connected with a wiring port, the bottom of the outer shell is fixedly connected with an insertion column, the outer surface of the insertion column is slidably connected with the inner wall of the protruding block, the top of the base is fixedly connected with a lower group mechanism, and the top edge of the base is fixedly connected with an upper group mechanism;

[0005] The upper group mechanism includes a telescopic rod, the top of the telescopic rod is fixedly connected to an upper wiring board, the top of the upper wiring board is fixedly connected to a power-on terminal, and the bottom of the upper wiring board is evenly provided with a replacement mechanism;

[0006] The replacement mechanism includes a servo motor 1, the output end of the servo motor 1 is fixedly connected to a rotating shaft 1, the bottom of the rotating shaft 1 is fixedly connected to a rotating frame, the bottom of the rotating frame is symmetrically provided with a battery mechanism, the bottom of the rotating frame is fixedly connected to the top of the battery mechanism, the bottom of the upper wiring board is evenly provided with a limiting ring, the bottom of the upper wiring board is fixedly connected to the top of the limiting ring, the inner wall of the limiting ring is fixedly connected to a power-on block, the bottom of the upper wiring board is evenly provided with a support rod 1, the bottom of the upper wiring board is fixedly connected to the top of the support rod 1, and the bottom of the support rod 1 is fixedly connected to a rack.

[0007] Preferably, the top of the telescopic rod is fixedly connected to the top of the base, and the top of the servo motor 1 is fixedly connected to the bottom of the upper wiring board.

[0008] Preferably, the battery mechanism includes a battery shell, ports are symmetrically provided at both ends of the battery shell, outer surfaces of the ports are fixedly connected to the two ends of the battery shell, aluminum foil is fixedly connected to the ports, a conductor rod is fixedly connected to the port located at the top, a diaphragm is fixedly connected to the middle part of the inner wall of the battery shell, an electrolyte is provided on the inner wall of the battery shell, hard carbon is uniformly provided on the inner wall of the port located at the top, a thin layer of aluminum oxide one is provided on the side of the hard carbon close to the diaphragm, layered transition metal oxides are uniformly provided on the inner wall of the port located at the bottom, sodium ion channels are provided between the layered transition metal oxides, and a thin layer of aluminum oxide two is provided on the side of the layered transition metal oxides close to the diaphragm.

[0009] Preferably, the bottom of the rotating frame is fixedly connected to the top of the port located above, and the top of the conducting rod is in contact with the bottom of the power supply block.

[0010] Preferably, the lower group mechanism includes a lower wiring board, the top of the lower wiring board is evenly provided with inner grooves, the outer surface of the inner groove is fixedly connected to a placing mechanism, the middle of the lower wiring board is provided with a sliding groove, the outer surface of the sliding groove is fixedly connected to servo motor 2, the output end of servo motor 2 is fixedly connected to a screw rod, the outer surface of the screw rod is threadedly connected to a sliding block, magnetic plates are symmetrically provided at both ends of the sliding block, and the top of the sliding block is fixedly connected to a blowing device.

[0011] Preferably, the placement mechanism includes a battery connecting block, the bottom of the battery connecting block is fixedly connected to the bottom of the inner groove, the bottom of the inner groove is fixedly connected to a placing block, the placing block and the inner groove are symmetrically arranged with respect to the center line of the inner groove, the top of the inner groove is symmetrically arranged with a fixed sleeve plate, the top of the fixed sleeve plate is fixedly connected with a cooling water pipe, both ends of the cooling water pipe are fixedly connected with a water flow mechanism, and the bottom of the inner groove is fixedly connected with a shielding mechanism.

[0012] Preferably, the shielding mechanism includes a second rotating shaft, a double shielding plate is fixedly connected to the top of the second rotating shaft, a worm gear is fixedly connected to the outer surface of the double shielding plate, a support plate is symmetrically arranged at the bottom of the inner groove, a rotating shaft three is rotatably connected to the opposite surface of the support plate, a worm is fixedly connected to the middle of the rotating shaft three, and a gear is fixedly connected to the outer surface of the rotating shaft three.

[0013] Preferably, the water flow mechanism includes a water storage block, a side of the water storage block away from the cooling water pipe is fixedly connected to a water pipe, an inner wall of the water storage block close to the placement block is fixedly connected to a telescopic spring, an end of the telescopic spring close to the water pipe is fixedly connected to a water baffle, and an outer surface of the water baffle is fixedly connected to a magnetic block.

[0014] Preferably, the bottom of the lower wiring board is fixedly connected to the top of the base, the bottom of the second rotating shaft is rotatably connected to the bottom of the inner groove, the outer surface of the water storage block is fixedly connected to the two ends of the cooling water pipe, the worm wheel and the worm are meshed with each other, and the gear and the rack cooperate with each other.

[0015] A sodium ion battery pack and a charging and discharging system thereof, comprising:

[0016] The contact module is arranged in the upper group mechanism and is used to control the upper and lower terminal boards in the battery pack to contact with the six corresponding single sodium-ion batteries, so as to facilitate subsequent charging and discharging;

[0017] The conversion module is arranged in the replacement mechanism and is used to replace the operation of a single battery during the long-term charging and discharging process, so as to maintain the service life and charging and discharging quality of the entire battery pack;

[0018] The charge and discharge module is arranged in the battery mechanism to control normal charge and discharge and maintain the stability of materials in a single battery during charge and discharge.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention sets an upper group mechanism. The battery pack is composed of a plurality of single sodium batteries. The charging and discharging quality and service life of the entire battery pack are affected by a single battery. The telescopic rod will drive the overall upper wiring board to move upward, so that the replacement mechanism will also move upward for a distance. Then the servo motor will drive the rotating shaft and the rotating frame to rotate, thereby driving the two battery mechanisms below to rotate. After rotating half a circle, the single sodium battery previously used for charging and discharging will rotate to the other side, and the spare battery mechanism will rotate to the side close to the power block, and the conductor rod will contact the power block. Then the telescopic rod will move downward again, so that the spare battery mechanism will contact the lower group mechanism, thereby realizing a new charging and discharging process, avoiding long-term use, resulting in aging of the electrode material and structural changes inside the battery mechanism.

[0021] 2. The present invention sets a battery structure. When charging, the sodium ions in the layered transition metal oxide of the positive electrode are released from the positive electrode material, move to the negative electrode through the electrolyte, and are embedded in the hard carbon material of the negative electrode. At the same time, in the external circuit, electrons flow from the positive electrode of the external circuit to the negative electrode to maintain the charge balance of the entire battery system. During discharge, the opposite ion movement state will be generated. In these two processes, by setting the layered transition metal oxide and setting the sodium ion channel in the layered transition metal oxide, a smoother transmission channel can be provided for the sodium ions, so that the charging and discharging efficiency can be achieved. At the same time, the aluminum oxide thin layer 1 on the hard carbon and the aluminum oxide thin layer 2 on the layered transition metal oxide can effectively improve the stability of the SEI film that chemically reacts with the electrolyte on the positive and negative electrodes during the charging and discharging process, and avoid the uneven thickness of the SEI film, which may cause the energy loss of the battery to increase during the charging and discharging process and reduce the power performance of the battery.

[0022] 3. The present invention sets a water flow mechanism. When a single sodium battery is charged and discharged, heat energy will be generated. If the temperature is too high, it will not only reduce the performance of the battery, but may also be dangerous in serious cases. Since the cooling water pipe is sheathed on the outer surface of the battery shell, the water in the cooling water pipe will absorb the heat energy generated by the battery charging and discharging. During the charging and discharging process, the servo motor 2 will drive the screw to rotate, thereby controlling the movement of the sliding block. During the movement, the blowing device will start to work and blow the air on the inner wall of the outer shell to further reduce the temperature. At the same time, after the sliding block moves to the corresponding water flow mechanism position, the magnetic plate will attract the magnetic block, so that the water baffle moves out of the water pipe, so that the water in the cooling water pipes on both sides is exchanged, so that the water temperature of the cooling water pipe on the side connected to the battery block is reduced, thereby achieving a better cooling effect.

[0023] 4. The present invention sets a shielding mechanism. When the telescopic rod drives the upper wiring board to move, it also drives the support rod 1 and the toothed plate to move upward, so that the rack and the gear are matched, which in turn drives the gear and the rotating shaft 3 to rotate and finally drives the worm to rotate, and then the worm wheel and the rotating shaft 2 to rotate, so that the shielding double plates rotate to the top of the battery connecting block and the placement block, avoiding dust in the battery pack from entering the battery connecting block, so that dust and impurities will not affect the contact between the battery connecting block and the aluminum foil on the lower port. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a structural explosion diagram of the present invention.

[0026] Figure 3 It is a structural cross-sectional view of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the upper group mechanism of the present invention.

[0028] Figure 5 It is a structural schematic diagram of the replacement mechanism of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the battery mechanism of the present invention.

[0030] Figure 7 It is a structural cross-sectional view of the battery mechanism of the present invention.

[0031] Figure 8 It is a structural schematic diagram of the lower group mechanism of the present invention.

[0032] Fig. 9 yes Figure 8 Enlarged view of point A in the middle.

[0033] Fig.10 It is a structural schematic diagram of the placement mechanism of the present invention.

[0034] Fig.11 It is a structural schematic diagram of the shielding mechanism of the present invention.

[0035] Fig.12 It is a structural schematic diagram of the water flow mechanism of the present invention.

[0036] Fig.13 yes Fig.12 Enlarged view of point B in the middle.

[0037] Fig.14 It is a block diagram of the charging and discharging system of a sodium-ion battery pack.

[0038] In the figure: 1, base; 2, protruding block; 3, outer shell; 4, vent hole; 5, wiring port; 6, upper group mechanism; 7, lower group mechanism; 8, insertion column; 61, telescopic rod; 62, upper wiring board; 63, power supply terminal; 64, replacement mechanism; 641, servo motor 1; 642, rotating shaft 1; 643, rotating frame; 644, limiting ring; 645, power supply block; 646, battery mechanism; 647, support rod 1; 648, rack; 6461, battery shell; 6462, port; 6463, aluminum foil; 6464, wire rod; 6465, diaphragm; 6466, electrolyte; 6467, hard carbon; 6468, aluminum oxide thin layer 1; 6469, layered transition metal oxide; 64610, Sodium ion channel; 64611, alumina thin layer 2; 71, lower terminal board; 72, inner groove; 73, placement mechanism; 74, sliding groove; 75, servo motor 2; 76, screw; 77, sliding block; 78, magnetic plate; 79, blowing device; 731, battery connection block; 732, placement block; 733, fixed sleeve; 734, cooling water pipe; 735, water flow mechanism; 736, shielding mechanism; 7361, rotating shaft 2; 7362, shielding double plate; 7363, worm gear; 7364, support plate; 7365, rotating shaft 3; 7366, worm; 7367, gear; 7351, water storage block; 7352, water pipe; 7353, telescopic spring; 7354, water retaining plate; 7355, magnetic block. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0040] Example 1, using Figure 1-Figure 14 A sodium ion battery pack and a charging and discharging system thereof according to an embodiment of the present invention are described as follows.

[0041] like Figure 1-Figure 3 As shown, a sodium ion battery pack of the present invention comprises a base 1, a protruding block 2 is fixedly connected to the outer surface of the base 1, an outer shell 3 is arranged on the top of the protruding block 2, an outer surface of the outer shell 3 is arranged with a vent hole 4, a wiring port 5 is fixedly connected to the top of the outer shell 3, an insertion column 8 is fixedly connected to the bottom of the outer shell 3, the outer surface of the insertion column 8 is slidably connected to the inner wall of the protruding block 2, a lower group mechanism 7 is fixedly connected to the top of the base 1, and an upper group mechanism 6 is fixedly connected to the top edge of the base 1;

[0042] When the battery pack is used for charging and discharging, an external device needs to be inserted into the wiring port 5 and contacted through the lower group mechanism 7 and the upper group mechanism 6, so as to realize the charging and discharging of the sodium ion battery pack and ensure the performance and safety of the battery pack during the charging and discharging process.

[0043] like Figure 4 As shown, the upper group mechanism 6 includes a telescopic rod 61, the top of the telescopic rod 61 is fixedly connected to an upper wiring board 62, the top of the upper wiring board 62 is fixedly connected to a power supply terminal 63, and the bottom of the upper wiring board 62 is evenly provided with a replacement mechanism 64;

[0044] like Figure 5 As shown, the replacement mechanism 64 includes a servo motor 641, the output end of the servo motor 641 is fixedly connected to a rotating shaft 642, the bottom of the rotating shaft 642 is fixedly connected to a rotating frame 643, the bottom of the rotating frame 643 is symmetrically provided with a battery mechanism 646, the bottom of the rotating frame 643 is fixedly connected to the top of the battery mechanism 646, the bottom of the upper wiring board 62 is evenly provided with a limiting ring 644, the bottom of the upper wiring board 62 is fixedly connected to the top of the limiting ring 644, the inner wall of the limiting ring 644 is fixedly connected to a power-on block 645, the bottom of the upper wiring board 62 is evenly provided with a support rod 647, the bottom of the upper wiring board 62 is fixedly connected to the top of the support rod 647, and the bottom of the support rod 647 is fixedly connected to a rack 648.

[0045] The telescopic rod 61 will drive the entire terminal board 62 to move upward, thereby causing the replacement mechanism 64 to move upward for a certain distance, and then the servo motor 641 will drive the rotating shaft 642 and the rotating frame 643 to rotate, thereby driving the two battery mechanisms 646 below to rotate. After rotating half a circle, the single sodium battery previously used for charging and discharging will rotate to the other side, and the spare battery mechanism 646 will rotate to the side close to the power-on block 645, and make the conductor rod 6464 contact with the power-on block 645, and then the telescopic rod 61 will move downward again, so that the spare battery mechanism 646 is in contact with the lower group mechanism 7, thereby realizing a new charging and discharging process.

[0046] The top of the telescopic rod 61 is fixedly connected to the top of the base 1 , and the top of the servo motor 1 641 is fixedly connected to the bottom of the upper wiring board 62 .

[0047] like Figure 6-Figure 7As shown, the battery mechanism 646 includes a battery housing 6461, and ports 6462 are symmetrically arranged at both ends of the battery housing 6461. The outer surfaces of the ports 6462 are fixedly connected to the two ends of the battery housing 6461, and aluminum foil 6463 is fixedly connected to the ports 6462. The upper port 6462 is fixedly connected to a conductor rod 6464. A diaphragm 6465 is fixedly connected to the middle of the inner wall of the battery housing 6461. The inner wall of the battery housing 6461 is provided with an electrolyte 6464. 66. The inner wall of the port 6462 at the top is uniformly provided with hard carbon 6467, and the side of the hard carbon 6467 close to the diaphragm 6465 is covered with a thin layer of aluminum oxide 6468. The inner wall of the port 6462 at the bottom is uniformly provided with layered transition metal oxides 6469, sodium ion channels 64610 are provided between the layered transition metal oxides 6469, and the side of the layered transition metal oxides 6469 close to the diaphragm 6465 is covered with a thin layer of aluminum oxide 64611.

[0048] When charging, the sodium ions in the layered transition metal oxide 6469 of the positive electrode are released from the positive electrode material, move to the negative electrode through the electrolyte 6466, and are embedded in the hard carbon 6467 material of the negative electrode. At the same time, in the external circuit, electrons flow from the positive electrode of the external circuit to the negative electrode to maintain the charge balance of the entire battery system. When discharging, the opposite ion movement state will be generated. In these two processes, by setting the layered transition metal oxide 6469 and setting the sodium ion channel 64610 in the layered transition metal oxide 6469, a smoother transmission channel can be provided for the sodium ions, so that the charging and discharging efficiency can be achieved. At the same time, the aluminum oxide thin layer 1 6468 on the hard carbon 6467 and the aluminum oxide thin layer 2 64611 on the layered transition metal oxide 6469 can effectively improve the stability of the SEI film on the positive and negative electrodes that chemically reacts with the electrolyte 6466 during the charging and discharging process, and avoid the uneven thickness of the SEI film, which may increase the energy loss of the battery during the charging and discharging process and reduce the power performance of the battery.

[0049] The bottom of the rotating frame 643 is fixedly connected to the top of the port 6462 located above, and the top of the wire rod 6464 is in contact with the bottom of the power block 645 .

[0050] The specific workflow is as follows:

[0051] During operation, when charging and discharging, first the plug is inserted into the wiring port 5 and contacts the power-on end 63, then the telescopic rod 61 drives the entire wiring board 62 to move upward, thereby causing the replacement mechanism 64 to also move upward for a distance, then the servo motor 641 drives the rotating shaft 642 and the rotating frame 643 to rotate, thereby driving the two battery mechanisms 646 below to rotate, and after rotating half a circle, the single sodium battery previously used for charging and discharging will rotate to the other side, while the spare battery mechanism 646 will rotate to the side close to the power-on block 645, and cause the conductor rod 6464 to contact the power-on block 645, then the telescopic rod 61 will move downward again, thereby causing the spare battery mechanism 646 to contact the lower group mechanism 7, thereby realizing a new charging and discharging process, avoiding long-term use, resulting in aging of the electrode material and structural changes inside the battery mechanism 646. When charging, The sodium ions in the layered transition metal oxide 6469 of the positive electrode are released from the positive electrode material, move to the negative electrode through the electrolyte 6466, and are embedded in the hard carbon 6467 material of the negative electrode. At the same time, in the external circuit, electrons flow from the positive electrode of the external circuit to the negative electrode to maintain the charge balance of the entire battery system. During discharge, the opposite ion movement state will be generated. In these two processes, by setting the layered transition metal oxide 6469 and setting the sodium ion channel 64610 in the layered transition metal oxide 6469, a smoother transmission channel can be provided for the sodium ions, so that the charging and discharging efficiency can be achieved. At the same time, the aluminum oxide thin layer 1 6468 on the hard carbon 6467 and the aluminum oxide thin layer 2 64611 on the layered transition metal oxide 6469 can effectively improve the stability of the SEI film on the positive and negative electrodes that chemically reacts with the electrolyte 6466 during the charging and discharging process.

[0052] Embodiment 2, use Figure 1-Figure 14 A sodium ion battery pack and a charging and discharging system thereof according to an embodiment of the present invention are described as follows.

[0053] like Figure 8-Figure 9 As shown, a sodium ion battery pack of the present invention, on the basis of embodiment 1, the lower group mechanism 7 includes a lower wiring board 71, the top of the lower wiring board 71 is evenly provided with inner grooves 72, the outer surface of the inner groove 72 is fixedly connected with a placement mechanism 73, the middle of the lower wiring board 71 is provided with a sliding groove 74, the outer surface of the sliding groove 74 is fixedly connected with a servo motor 2 75, the output end of the servo motor 2 75 is fixedly connected with a screw rod 76, the outer surface of the screw rod 76 is threadedly connected with a sliding block 77, magnetic plates 78 are symmetrically provided at both ends of the sliding block 77, and a blowing device 79 is fixedly connected to the top of the sliding block 77.

[0054] During the charging and discharging process, the servo motor 2 75 will drive the screw 76 to rotate, thereby controlling the movement of the sliding block 77. During the movement, the blowing device 79 will start to work and blow air on the inner wall of the outer shell 3 to further reduce the temperature.

[0055] like Fig.10 As shown, the placement mechanism 73 includes a battery connecting block 731, the bottom of the battery connecting block 731 is fixedly connected to the bottom of the inner groove 72, the bottom of the inner groove 72 is fixedly connected with a placement block 732, the placement block 732 and the inner groove 72 are symmetrically arranged with the center line of the inner groove 72, the top of the inner groove 72 is symmetrically arranged with a fixed sleeve 733, the top of the fixed sleeve 733 is fixedly connected with a cooling water pipe 734, the two ends of the cooling water pipe 734 are fixedly connected with a water flow mechanism 735, and the bottom of the inner groove 72 is fixedly connected with a shielding mechanism 736.

[0056] When a single sodium battery is charged and discharged, heat energy is generated. If the temperature is too high, not only will the performance of the battery be reduced, but it may also be dangerous in serious cases. Since the cooling water pipe 734 is mounted on the outer surface of the battery housing 6461, the water in the cooling water pipe 734 will absorb the heat energy generated by the battery charging and discharging.

[0057] like Fig.11 As shown, the shielding mechanism 736 includes a second rotating shaft 7361, the top of which is fixedly connected with a shielding double plate 7362, the outer surface of which is fixedly connected with a worm gear 7363, a support plate 7364 is symmetrically arranged at the bottom of the inner groove 72, the opposite surface of the support plate 7364 is rotatably connected with a third rotating shaft 7365, the middle of which is fixedly connected with a worm 7366, and the outer surface of which is fixedly connected with a gear 7367.

[0058] When the telescopic rod 61 drives the upper terminal plate 62 to move, it will also drive the support rod 1 647 and the tooth plate to move upward, so that the rack 648 and the gear 7367 will cooperate, which will drive the gear 7367 and the rotating shaft 3 7365 to rotate and finally drive the worm 7366 to rotate, and then the worm wheel 7363 and the rotating shaft 2 7361 to rotate, so that the shielding double plate 7362 rotates to the top of the battery connecting block 731 and the placement block 732, avoiding dust in the battery pack from entering the battery connecting block 731, so that dust and impurities will not affect the contact between the battery connecting block 731 and the aluminum foil 6463 located on the lower port 6462.

[0059] like Figure 12-13As shown, the water flow mechanism 735 includes a water storage block 7351, and the side of the water storage block 7351 away from the cooling water pipe 734 is fixedly connected to a water pipe 7352, the inner wall of the water storage block 7351 close to the placement block 732 is fixedly connected to a telescopic spring 7353, the end of the telescopic spring 7353 close to the water pipe 7352 is fixedly connected to a water baffle 7354, and the outer surface of the water baffle 7354 is fixedly connected to a magnetic block 7355.

[0060] After the sliding block 77 moves to the corresponding position of the water flow mechanism 735, the magnetic plate 78 will attract the magnetic block 7355, so that the water baffle 7354 moves out of the water pipe 7352, so that the water in the cooling water pipes 734 on both sides is exchanged, so that the water temperature of the cooling water pipe 734 on the side connected to the battery block 731 is reduced, thereby achieving a better cooling effect.

[0061] The bottom of the lower terminal board 71 is fixedly connected to the top of the base 1, the bottom of the second rotating shaft 7361 is rotatably connected to the bottom of the inner groove 72, the outer surface of the water storage block 7351 is fixedly connected to the two ends of the cooling water pipe 734, the worm wheel 7363 and the worm 7366 are meshed with each other, and the gear 7367 and the rack 648 cooperate with each other.

[0062] like Fig.14 As shown, a sodium ion battery pack and a charging and discharging system thereof, comprising:

[0063] The contact module is arranged in the upper group mechanism 6 and is used to control the upper and lower terminal boards in the battery pack to contact with six corresponding single sodium ion batteries to facilitate subsequent charging and discharging;

[0064] The conversion module is arranged in the replacement mechanism 64 and is used to replace the operation of a single battery during the long-term charging and discharging process, so as to maintain the service life and charging and discharging quality of the entire battery pack;

[0065] The charge and discharge module is arranged in the battery mechanism 646, and is used to control normal charge and discharge, and maintain the stability of materials in a single battery during charge and discharge.

[0066] The specific workflow is as follows:

[0067] During operation, the water in the cooling water pipe 734 will absorb the heat energy generated by the battery charging and discharging. During the charging and discharging process, the servo motor 2 75 will drive the screw 76 to rotate, thereby controlling the movement of the sliding block 77. During the movement, the blowing device 79 will start to work to blow the air on the inner wall of the outer shell 3 to further reduce the temperature. At the same time, after the sliding block 77 moves to the corresponding position of the water flow mechanism 735, the magnetic plate 78 will attract the magnetic block 7355, so that the water baffle 7354 moves out of the water pipe 7352, so that the water in the cooling water pipes 734 on both sides is exchanged, so that the water in the cooling water pipe 734 on the side connected to the battery block 731 is As the temperature drops, the telescopic rod 61 drives the upper terminal plate 62 to move, which in turn drives the support rod 1 647 and the toothed plate to move upward, thereby making the rack 648 cooperate with the gear 7367, which in turn drives the gear 7367 and the rotating shaft 3 7365 to rotate and finally drives the worm 7366 to rotate, thereby causing the worm wheel 7363 and the rotating shaft 2 7361 to rotate, thereby causing the shielding double plate 7362 to rotate to the top of the battery connecting block 731 and the placement block 732, thereby preventing dust in the battery pack from entering the battery connecting block 731, and preventing dust and impurities from affecting the contact between the battery connecting block 731 and the aluminum foil 6463 located on the lower port 6462.

[0068] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A sodium ion battery pack, comprising a base (1), characterized in that: The outer surface of the base (1) is fixedly connected to a protruding block (2), the top of the protruding block (2) is provided with an outer shell (3), the top of the outer shell (3) is fixedly connected to a wiring port (5), the outer surface of the outer shell (3) is provided with an air vent (4), the bottom of the outer shell (3) is fixedly connected to an insertion column (8), the outer surface of the insertion column (8) is slidably connected to the inner wall of the protruding block (2), the top of the base (1) is fixedly connected to a lower group mechanism (7), and the top edge of the base (1) is fixedly connected to an upper group mechanism (6); The upper group mechanism (6) comprises a telescopic rod (61), the top of the telescopic rod (61) is fixedly connected to an upper wiring board (62), the top of the upper wiring board (62) is fixedly connected to a power supply terminal (63), and the bottom of the upper wiring board (62) is evenly provided with replacement mechanisms (64); The replacement mechanism (64) comprises a servo motor 1 (641), the output end of the servo motor 1 (641) is fixedly connected to a rotating shaft 1 (642), the bottom of the rotating shaft 1 (642) is fixedly connected to a rotating frame (643), the bottom of the rotating frame (643) is symmetrically provided with a battery mechanism (646), the bottom of the upper wiring board (62) is evenly provided with a limit ring (644), the inner wall of the limit ring (644) is fixedly connected to a power supply block (645), the bottom of the upper wiring board (62) is evenly provided with a support rod 1 (647), and the bottom of the support rod 1 (647) is fixedly connected to a rack (648); The lower group mechanism (7) comprises a lower wiring board (71), the top of the lower wiring board (71) is evenly provided with inner grooves (72), the outer surface of the inner groove (72) is fixedly connected to a placement mechanism (73), the middle of the lower wiring board (71) is provided with a sliding groove (74), the outer surface of the sliding groove (74) is fixedly connected to a servo motor 2 (75), the output end of the servo motor 2 (75) is fixedly connected to a screw rod (76), the outer surface of the screw rod (76) is threadedly connected to a sliding block (77), magnetic plates (78) are symmetrically provided at both ends of the sliding block (77), and the top of the sliding block (77) is fixedly connected to a blowing device (79); The placement mechanism (73) comprises a battery connection block (731), the bottom of the battery connection block (731) is fixedly connected to the bottom of the inner groove (72), the bottom of the inner groove (72) is fixedly connected to a placement block (732), the placement block (732) and the inner groove (72) are symmetrically arranged about the center line of the inner groove (72), the top of the inner groove (72) is symmetrically arranged with a fixed sleeve (733), the top of the fixed sleeve (733) is fixedly connected to a cooling water pipe (734), both ends of the cooling water pipe (734) are fixedly connected to a water flow mechanism (735), and the bottom of the inner groove (72) is fixedly connected to a shielding mechanism (736); The shielding mechanism (736) comprises a second rotating shaft (7361), a shielding double plate (7362) is fixedly connected to the top of the second rotating shaft (7361), a worm gear (7363) is fixedly connected to the outer surface of the shielding double plate (7362), a support plate (7364) is symmetrically arranged at the bottom of the inner groove (72), a rotating shaft (7365) is rotatably connected to the opposite surface of the support plate (7364), a worm (7366) is fixedly connected to the middle of the rotating shaft (7365), and a gear (7367) is fixedly connected to the outer surface of the rotating shaft (7365); The water flow mechanism (735) comprises a water storage block (7351); a side of the water storage block (7351) away from the cooling water pipe (734) is fixedly connected to a water pipe (7352); an inner wall of the water storage block (7351) close to the placement block (732) is fixedly connected to a telescopic spring (7353); an end of the telescopic spring (7353) close to the water pipe (7352) is fixedly connected to a water baffle (7354); and an outer surface of the water baffle (7354) is fixedly connected to a magnetic block (7355); The bottom of the lower wiring board (71) is fixedly connected to the top of the base (1), the bottom of the second rotating shaft (7361) is rotatably connected to the bottom of the inner groove (72), the outer surface of the water storage block (7351) is fixedly connected to both ends of the cooling water pipe (734), the worm wheel (7363) and the worm (7366) are meshed with each other, and the gear (7367) and the rack (648) cooperate with each other.

2. A sodium ion battery pack according to claim 1, characterized in that: The top of the telescopic rod (61) is fixedly connected to the top of the base (1), and the top of the servo motor 1 (641) is fixedly connected to the bottom of the upper wiring board (62).

3. A sodium ion battery pack according to claim 1, characterized in that: The battery mechanism (646) comprises a battery housing (6461), ports (6462) are symmetrically arranged at both ends of the battery housing (6461), aluminum foil (6463) is fixedly connected to the ports (6462), a conductor rod (6464) is fixedly connected to the port (6462) located at the top, a diaphragm (6465) is fixedly connected to the middle of the inner wall of the battery housing (6461), an electrolyte (6466) is arranged on the inner wall of the battery housing (6461), and the port (6462) located at the top is fixedly connected to the conductor rod (6464). The inner wall of the port (6462) is uniformly provided with hard carbon (6467), and the side of the hard carbon (6467) close to the diaphragm (6465) is covered with a thin layer of aluminum oxide (6468). The inner wall of the port (6462) located at the bottom is uniformly provided with layered transition metal oxides (6469), sodium ion channels (64610) are provided between the layered transition metal oxides (6469), and the side of the layered transition metal oxides (6469) close to the diaphragm (6465) is covered with a thin layer of aluminum oxide (64611).

4. A sodium ion battery pack according to claim 3, characterized in that: The bottom of the rotating frame (643) is fixedly connected to the top of the port (6462) located above, and the top of the conductor rod (6464) is in contact with the bottom of the power supply block (645).

5. A sodium ion battery pack and a charging and discharging system thereof, wherein the sodium ion battery pack is charged and discharged according to any one of claims 1 to 4, characterized in that: include: A contact module, arranged in the upper group mechanism (6), is used to control the contact between the upper and lower wiring boards in the battery pack and the six corresponding single sodium ion batteries, so as to facilitate subsequent charging and discharging; The conversion module is arranged in the replacement mechanism (64) and is used to replace the operation of a single battery during a long-term charging and discharging process, thereby maintaining the service life and charging and discharging quality of the entire battery pack; The charge and discharge module is arranged in the battery mechanism (646) and is used to control normal charge and discharge and maintain the stability of materials in a single battery during charge and discharge.

Images