An energy storage battery cooling system

Abstract

The present invention discloses an energy storage battery cooling system, which relates to the technical field of battery cooling. It solves the problems that after the existing energy storage battery is cooled by a water-cooled plate, the temperature of the bottom plate of the battery is relatively low, while the temperature of the top of the battery is relatively high, which is still not conducive to the efficient use of the entire energy storage battery. At the same time, the use of multiple circulation fans will increase the production cost of the entire energy storage battery box. The energy storage battery cooling system includes a battery box, a sealing plate, a battery pack, a cooling component, and a water circulation component; in the present invention, when the phase change liquid in the microchannel plate absorbs the heat of the battery cell, it will change from a liquid state to a gaseous state, flow into the serpentine tube through the first main channel, the branch channel, and the second main channel, and then flow into the serpentine tube through the first liquid outlet pipe. Heat exchange is carried out with the cooling water in the upper chamber, changes back from a gaseous state to a liquid state, and then returns to the first main channel through the first liquid inlet pipe, completing the heat exchange cycle and enabling excellent control over the overall temperature of the battery cell.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cooling, and particularly to an energy storage battery cooling system. Background Art

[0002] During the charging and discharging process of the battery, a large amount of heat energy is generated. Therefore, a cooling system must be equipped on the energy storage battery box.

[0003] The existing Chinese patent application with the publication number CN116014287A discloses a fully immersed cooling system for an energy storage lithium battery box, including a lithium battery box and a refrigeration device. The lithium battery box includes a rectangular box body. An air inlet is provided on the rear panel of the box body, and an air outlet is provided on the front panel. The air inlet of the box body is directly connected to the cold air outlet end of the refrigeration device through a hose. A flow dividing plate is provided inside the rear panel of the box body, and the flow dividing plate is opposite to the position of the air inlet. In the present invention, the housing is directly connected to the lithium battery box, and the cold air directly enters the box body. By directly using the power of the air conditioning air supply, the cold air enters from the rear panel of the box body, is evenly dispersed into the box body through the flow dividing plate, and then blows out from the front panel of the box body to take away the heat generated by the lithium battery and quickly reduce the temperature inside the energy storage lithium battery box.

[0004] However, the existing cooling system has the following defects in specific use:

[0005] 1. When the existing energy storage battery is in use, the storage and working maximum temperature of the battery will be limited to below 55°C. There are mainly two ways to cool the battery box: air cooling and water cooling. Among them, air cooling is greatly affected by the ambient temperature. In a high-temperature environment, the battery is prone to overheating, while water cooling is less affected by environmental changes and has a large heat transfer coefficient and good cooling effect. There are two ways of water cooling. One is to directly make the battery outer frame into a water-cooled structure, and the other is to use an independent liquid cooling plate. However, whether it is the outer frame water cooling or the independent cold plate, the existing ones are arranged at the bottom of the battery, which will result in inconsistent thermal conductivities in the three directions of the battery size. After cooling with the cold plate, the temperature of the bottom plate of the battery is relatively low, while the temperature of the top of the battery is relatively high, which is still not conducive to the efficient use of the entire energy storage battery.

[0006] 2. When the existing energy storage battery is in use, in order to ensure the overall heat transfer efficiency, electrical structures such as circulation fans are used to equalize the space temperature. The circulation fans are symmetrically arranged up and down or left and right. On the one hand, the use of multiple circulation fans will increase the production cost of the entire energy storage battery box, and long-term operation will also cause waste of additional electric power resources. On the other hand, the use of too many electrical structures has disadvantages such as being easily damaged, not easily repaired, and high repair costs compared to the use of mechanical structures, which is not conducive to the overall efficient and long-term use of the energy storage battery. Summary of the Invention

[0007] The object of the present invention is to provide an energy storage battery cooling system to solve the problems raised in the above-mentioned background technology.

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

[0009] An energy storage battery cooling system provided by the present invention includes:

[0010] A battery box, a support pad is arranged at the bottom of the battery box, and a first chamber and a second chamber are sequentially opened in the battery box from top to bottom, and third chambers are opened on both the left and right sides inside the battery box;

[0011] A sealing plate, the sealing plate is horizontally fixed inside the second chamber, and the inside of the second chamber is vertically divided into an upper chamber and a lower chamber, and cooling water is filled in the upper chamber;

[0012] A battery pack, the battery pack is arranged inside the first chamber;

[0013] A cooling component, the cooling component is arranged inside the lower chamber for spatially cooling the inside of the lower chamber;

[0014] And a water circulation component, the water circulation component is arranged inside the lower chamber for conveying the cooling water inside the upper chamber to the inside of the lower chamber, and after being cooled by the cooling component inside the lower chamber, it is sent back to the inside of the upper chamber again.

[0015] Preferably, the battery pack includes several rows of battery cells, microchannel plates are arranged at the front and rear ends of each row of battery cells, and a microchannel structure is opened inside the microchannel plates, a phase change liquid is filled inside the microchannel structure, and,

[0016] The battery pack further includes a serpentine tube arranged inside the upper chamber, one end of the serpentine tube is connected with several first liquid outlet pipes having the same number as the microchannel plates, the other end of the serpentine tube is connected with several first liquid inlet pipes having the same number as the microchannel plates, and the ends of the first liquid inlet pipes and the first liquid outlet pipes are both communicated with the microchannel structure.

[0017] Preferably, the microchannel structure includes:

[0018] A first main channel, a second main channel and branch channels;

[0019] Among them,

[0020] The first main channel and the second main channel are both horizontally and parallelly opened inside the microchannel plate, the end of the first main channel is connected with the end of the first liquid inlet pipe, the end of the second main channel is connected with the end of the first liquid outlet pipe, and,

[0021] Every three of the branch channels form a channel group, and each channel group corresponds to and aligns with each of the battery cells one by one.

[0022] Preferably, the cooling assembly includes a thermoelectric cooler disposed inside the lower chamber, and the number of the thermoelectric coolers is at least four. The four thermoelectric coolers are respectively disposed at the four corners of the inner bottom of the lower chamber, and the heat dissipation ends of the thermoelectric coolers extend to the outer bottom of the battery box.

[0023] Preferably, the water circulation assembly includes:

[0024] A micro water pump, a second liquid inlet pipe, and a second liquid outlet pipe;

[0025] Wherein,

[0026] The micro water pump is installed at the inner bottom end of the lower chamber. One end of the second liquid inlet pipe is connected to the water inlet end of the micro water pump, and the other end of the second liquid inlet pipe extends into the upper chamber. One end of the second liquid outlet pipe is connected to the water outlet end of the micro water pump, and the other end of the second liquid outlet pipe extends into the upper chamber.

[0027] Preferably, the top end of the second liquid inlet pipe is located at the top end inside the upper chamber, and the top end of the second liquid outlet pipe is located at the bottom end inside the upper chamber.

[0028] Preferably, a plurality of first fixing cylinders are provided on the second liquid inlet pipe. The bottom of the first fixing cylinder is fixed to the inner bottom end of the lower chamber, and the top of the first fixing cylinder is fixed to the bottom of the sealing plate. A rotating shaft is vertically rotatably connected to the center of the first fixing cylinder, and a plurality of first arc-shaped blades are uniformly arranged on the outer circumference of the rotating shaft.

[0029] Preferably, a plurality of second fixing cylinders are provided on the serpentine pipe. The plurality of second fixing cylinders correspond to and align with some of the first fixing cylinders one by one. The top of the second fixing cylinder is fixed to the inner top end of the upper chamber, and

[0030] The top end of the rotating shaft inside the first fixing cylinder aligned with the second fixing cylinder extends into the second fixing cylinder and is rotatably connected to the connection between the second fixing cylinder. Second arc-shaped blades are also uniformly arranged on the outer circumference of the rotating shaft inside the second fixing cylinder.

[0031] Preferably, a plurality of rotating rods are also uniformly arranged on the outer circumference of the rotating shaft, and a stirring blade is connected to the end of the rotating rod. The rotating rod and the stirring blade are both located between the first fixing cylinder and the second fixing cylinder, and the cross section of the stirring blade is a fan-shaped structure.

[0032] Preferably, a first magnet is provided at the bottom of the stirring blade, and the first magnet is provided on one side of the bottom of the stirring blade. A second magnet is correspondingly provided below the first magnet, and the bottom of the second magnet is fixed to the top of the sealing plate. The top of the first magnet and the bottom of the second magnet attract or repel each other magnetically. And,

[0033] The end of the rotating rod is rotatably connected to the outside of the rotating shaft.

[0034] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0035] 1. In this energy storage battery cooling system, when the phase change liquid in the microchannel plate absorbs the heat of the battery cells, it will change from liquid to gas state. After passing through the first main channel, the branch channels and the second main channel, it flows into the serpentine tube through the first liquid outlet pipe, and exchanges heat with the cooling water in the upper chamber, changes back from gas state to liquid state, and then returns to the first main channel through the first liquid inlet pipe to complete the heat exchange cycle. Since the microchannel plates are arranged between each row of battery cells, excellent control over the overall temperature of the battery cells can be achieved, and the overall cost is lower, which can better ensure the efficient and long-term use of the energy storage battery;

[0036] 2. In this energy storage battery cooling system, each three of the branch channels form a channel group, and each channel group corresponds to and aligns with each battery cell respectively. When absorbing heat from a single battery cell, the channel group formed by the three branch channels is responsible. At the same time, the aperture of each branch channel is one-third of the aperture of the first main channel or the second main channel. Therefore, when the phase change liquid in the first main channel enters the three branch channels, it will be equally divided by the three branch channels, thereby increasing the contact heat conduction area between it and the battery cells, which is more conducive to absorbing the temperature of the battery cells and improving the overall heat dissipation and cooling effect;

[0037] 3. In this energy storage battery cooling system, when the cooling water passes through the second liquid inlet pipe, under the action of the water flow, the first arc-shaped blade and the rotating rod will rotate, which can assist the micro water pump, making the water flow faster inside the second liquid inlet pipe and improving the overall heat exchange cycle effect. At the same time, when the rotating shaft rotates, the second arc-shaped blade outside the rotating shaft will also rotate inside the second fixed cylinder, thereby guiding and transporting the phase change liquid in the serpentine tube, improving the flow rate of the phase change liquid in the serpentine tube. The combination of the two makes the overall have an excellent heat exchange cycle effect, and the entire driving structure is generated by the self-flowing effect of the water flow, without consuming additional electric power resources, and is composed of mechanical structures, which is also convenient for subsequent maintenance, reduces costs, and responds to the current energy-saving and environmental protection living concept;

[0038] 4. In this energy storage battery cooling system, when the rotating shaft rotates, the stirring blades can rotate. Since the stirring blades are inside the upper chamber, the rotating stirring blades can stir the cooling water in the upper chamber, thus ensuring the uniform temperature of the cooling water. At the same time, when the stirring blades rotate, the first magnet rotates accordingly. Due to the mutual cooperation between the first magnet and the second magnet, and the first magnet is arranged at the eccentric position of the stirring blade, when the stirring blade rotates horizontally, due to the mutual cooperation between the first magnet and the second magnet, the whole stirring blade will deflect, further improving the mixing effect of the cooling water, and thus further enhancing the overall heat dissipation and cooling effect on the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings forming a part of this invention are used to provide a further understanding of the invention. The schematic embodiments and descriptions thereof of the invention are used to explain the invention and do not constitute an improper limitation to the invention.

[0040] In addition, the terms "mounted", "arranged", "provided with", "connected", "coupled", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Figure 1 is a schematic diagram of the bottom structure of the whole battery box in the present invention;

[0042] Figure 2 is a schematic diagram of the structure of the internal battery pack after the battery box is longitudinally sectioned in the present invention;

[0043] Figure 3 is the present invention Figure 2 front view;

[0044] Figure 4 is a partial schematic diagram of the internal space distribution after the battery box is longitudinally sectioned in the present invention;

[0045] Figure 5 is a schematic diagram of the structure of the battery pack in the present invention;

[0046] Figure 6 is a longitudinal sectional view of the microchannel plate in the present invention;

[0047] Figure 7 is the present invention Figure 6 enlarged view of part A;

[0048] Figure 8It is a schematic diagram of the internal structure of the lower chamber after the battery box is horizontally sectioned in the present invention;

[0049] Figure 9 It is a schematic diagram of the internal structure of the upper chamber after the battery box is horizontally sectioned in the present invention;

[0050] Figure 10 It is a schematic diagram of the structure of the cooling component and the water circulation component inside the lower chamber in the present invention;

[0051] Figure 11 It is a longitudinal sectional view of the first fixing cylinder and the second fixing cylinder in the present invention;

[0052] Figure 12 It is a schematic diagram of the structure of the stirring blade in the present invention;

[0053] In the figure:

[0054] 1. Battery box; 101. First chamber; 102. Second chamber; 1021. Upper chamber; 1022. Lower chamber; 103. Third chamber;

[0055] 2. Sealing plate; 3. Support pad;

[0056] 4. Battery pack; 401. Battery cell; 402. Microchannel plate; 403. Microchannel structure; 4031. First main channel; 4032. Second main channel; 4033. Branch channel; 404. First liquid outlet pipe; 405. First liquid inlet pipe; 406. Serpentine tube;

[0057] 5. Cooling component; 501. Thermoelectric cooler;

[0058] 6. Water circulation component; 601. Micro water pump; 602. Second liquid inlet pipe; 603. Second liquid outlet pipe;

[0059] 7. First fixing cylinder; 8. Rotating shaft; 9. First arc-shaped blade; 10. Second fixing cylinder; 11. Second arc-shaped blade; 12. Rotating rod; 13. Stirring blade; 14. First magnet; 15. Second magnet. Detailed implementation manners

[0060] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0061] Please refer to Figures 1-12, an energy storage battery cooling system, including a battery box 1, a sealing plate 2, a battery pack 4, a cooling component 5, and a water circulation component 6. Specifically, as follows:

[0062] A support pad 3 is provided at the bottom of the battery box 1, and a first chamber 101 and a second chamber 102 are successively opened in the battery box 1 from top to bottom. Third chambers 103 are opened on both the left and right sides inside the battery box 1. The support pad 3 is used to stably place the entire battery box 1. At the same time, structures such as connecting pieces can be provided on the support pad 3 for the overall installation of the battery box 1 on other components to be charged. This is prior art and will not be elaborated here.

[0063] At the same time, the above-mentioned sealing plate 2 is horizontally fixed inside the second chamber 102 and divides the inside of the second chamber 102 into an upper chamber 1021 and a lower chamber 1022 up and down. The upper chamber 1021 is filled with cooling water; the above-mentioned battery pack 4 is arranged inside the first chamber 101; the above-mentioned cooling component 5 is arranged inside the lower chamber 1022 for cooling the space inside the lower chamber 1022; the above-mentioned water circulation component 6 is arranged inside the lower chamber 1022 for transporting the cooling water inside the upper chamber 1021 to the inside of the lower chamber 1022, and after being cooled by the cooling component 5 inside the lower chamber 1022, it is sent back to the inside of the upper chamber 1021 again.

[0064] Specifically, in this embodiment, the battery pack 4 includes several rows of battery cells 401. Microchannel plates 402 are provided at the front and rear ends of each row of battery cells 401, and a microchannel structure 403 is opened inside the microchannel plate 402. A phase change liquid is filled inside the microchannel structure 403. In this embodiment, the phase change liquid will vaporize after exceeding more than fifty degrees Celsius, such as substances like methanol. The specific phase change liquid can be determined by the manufacturer. And the battery pack 4 also includes a serpentine tube 406 arranged inside the upper chamber 1021. One end of the serpentine tube 406 is connected to a number of first liquid outlet pipes 404 equal to the number of microchannel plates 402, and the other end of the serpentine tube 406 is connected to a number of first liquid inlet pipes 405 equal to the number of microchannel plates 402. And the ends of the first liquid inlet pipes 405 and the first liquid outlet pipes 404 are both communicated with the microchannel structure 403.

[0065] And the above-mentioned microchannel structure 403 specifically includes a first main channel 4031, a second main channel 4032, and branch channels 4033. Among them, the first main channel 4031 and the second main channel 4032 are both horizontally and parallelly opened inside the microchannel plate 402. The end of the first main channel 4031 is connected to the end of the first liquid inlet pipe 405, and the end of the second main channel 4032 is connected to the end of the first liquid outlet pipe 404. And every three branch channels 4033 form a channel group, and each channel group corresponds to and aligns with each battery cell 401 one by one.

[0066] Therefore, in combination with Figure 3 , Figure 5 , Figure 6 and Figure 7 it can be seen that by arranging the microchannel plates 402 between each row of battery cells 401, and at the same time, the phase change liquid in the microchannel structure 403 inside the microchannel plate 402 will form a cycle after passing through the first liquid inlet pipe 405, the first liquid outlet pipe 404 and the serpentine pipe 406. Since the serpentine pipe 406 is inside the upper chamber 1021 and there is cooling water in the upper chamber 1021, the cooling water realizes a good cooling effect after passing through the cooling assembly 5 and the water circulation assembly 6. When the phase change liquid in the microchannel plate 402 absorbs the heat of the battery cell 401, it will change from liquid to gas state, flow into the serpentine pipe 406 from the first liquid outlet pipe 404 after passing through the first main channel 4031, the branch channel 4033 and the second main channel 4032, exchange heat with the cooling water in the upper chamber 1021, change back from gas state to liquid state, and then return to the first main channel 4031 after passing through the first liquid inlet pipe 405 to complete the heat exchange cycle. Since the microchannel plates 402 are arranged between each row of battery cells 401, excellent control over the overall temperature of the battery cells 401 can be achieved, and the overall cost is lower, which can better ensure the efficient and long-term use of the energy storage battery.

[0067] In addition, in combination with Figure 7 it can be seen that since every three branch channels 4033 form a channel group, and each channel group corresponds to and aligns with each battery cell 401 respectively, when absorbing heat from a single battery cell 401, the channel group formed by the three branch channels 4033 is responsible. In this embodiment, the aperture of each branch channel 4033 is one-third of the aperture of the first main channel 4031 or the second main channel 4032. Therefore, when the phase change liquid in the first main channel 4031 enters the three branch channels 4033, it will be equally divided by the three branch channels 4033, thereby increasing the contact heat conduction area between it and the battery cell 401, which is more conducive to absorbing the temperature of the battery cell 401 and improving the overall heat dissipation and cooling effect.

[0068] Furthermore, in this embodiment, the cooling component 5 includes a thermoelectric cooler 501 disposed inside the lower chamber 1022. The number of thermoelectric coolers 501 is at least four. The four thermoelectric coolers 501 are respectively disposed at the four corners of the inner bottom of the lower chamber 1022, and the heat dissipation ends of the thermoelectric coolers 501 extend to the outer bottom of the battery box 1. The air inside the lower chamber 1022 is cooled by the disposed thermoelectric coolers 501. Temperature sensors are provided at positions on the serpentine tube 406 close to the first liquid inlet pipe 405 and the first liquid outlet pipe 404. The front and rear temperatures inside the serpentine tube 406 are compared by the two temperature sensors, and the temperature sensors are electrically connected to the thermoelectric coolers 501 by the prior art. When the cooling effect of the temperature inside the serpentine tube 406 is poor, the power of the thermoelectric coolers 501 can be controlled to increase, so as to improve the cooling effect, and thus it is convenient to ensure that the temperature of the battery cell 401 is always within an effective and reasonable range.

[0069] Furthermore, the above-mentioned water circulation component 6 includes a micro water pump 601, a second liquid inlet pipe 602 and a second liquid outlet pipe 603. Among them, the micro water pump 601 is installed at the inner bottom end of the lower chamber 1022. One end of the second liquid inlet pipe 602 is connected to the water inlet end of the micro water pump 601, and the other end of the second liquid inlet pipe 602 extends into the upper chamber 1021. One end of the second liquid outlet pipe 603 is connected to the water outlet end of the micro water pump 601, and the other end of the second liquid outlet pipe 603 extends into the upper chamber 1021. After the micro water pump 601 is started by using an external controller, due to the arranged positions of the micro water pump 601, the second liquid outlet pipe 603 and the second liquid inlet pipe 602, the cooling water inside the upper chamber 1021 can be transported into the lower chamber 1022 for cooling and then transported back into the upper chamber 1021, further ensuring the cooling effect. At the same time, in this embodiment, the micro water pump 601 is also electrically connected to the above-mentioned temperature sensors. When the temperature is too high, the transmission power of the micro water pump 601 can be controlled to increase, so as to improve the cooling effect.

[0070] Meanwhile, it is worth mentioning that the top end of the second liquid inlet pipe 602 is located at the top end inside the upper chamber 1021, and the top end of the second liquid outlet pipe 603 is located at the bottom end inside the upper chamber 1021. The purpose of such a setting is that, by the top end of the second liquid inlet pipe 602 being located at the top end inside the upper chamber 1021, the cooling water at the upper end of the upper chamber 1021 will be preferentially transported into the lower chamber 1022 for cooling, and the cooled cooling water will be transported to the lower end position inside the lower chamber 1022, so as to improve the overall circulating cooling effect and prevent the just-cooled cooling water inside the upper chamber 1021 from being transported into the lower chamber 1022 for cooling again.

[0071] In addition, to further enhance the cooling effect, a number of first fixing cylinders 7 are provided on the second liquid inlet pipe 602. The bottom of the first fixing cylinder 7 is fixed to the inner bottom end of the lower chamber 1022, and the top of the first fixing cylinder 7 is fixed to the bottom of the sealing plate 2. A rotating shaft 8 is vertically rotatably connected to the center of the inside of the first fixing cylinder 7, and a number of first arc-shaped blades 9 are uniformly arranged on the outer circumference of the rotating shaft 8 along its circumferential direction. At the same time, a number of second fixing cylinders 10 are provided on the serpentine pipe 406. A number of the second fixing cylinders 10 are in one-to-one correspondence and alignment with a number of the first fixing cylinders 7. The top of the second fixing cylinder 10 is fixed to the inner top end of the upper chamber 1021. And the top end of the rotating shaft 8 inside the first fixing cylinder 7 aligned with the second fixing cylinder 10 extends into the inside of the second fixing cylinder 10 and is rotatably connected at the connection with the second fixing cylinder 10. Second arc-shaped blades 11 located inside the second fixing cylinder 10 are also uniformly arranged on the outer circumference of the rotating shaft 8 along its circumferential direction.

[0072] Therefore, in summary, when the cooling water passes through the second liquid inlet pipe 602, under the action of the water flow, the first arc-shaped blades 9 and the rotating rods 12 will rotate, thereby being able to assist the micro water pump 601 to make the water flow faster inside the second liquid inlet pipe 602 and improve the overall heat exchange cycle effect. At the same time, when the rotating shaft 8 rotates, the second arc-shaped blades 11 outside the rotating shaft 8 will also rotate inside the second fixing cylinder 10, thereby guiding and transporting the phase change liquid in the serpentine pipe 406 and increasing the flow rate of the phase change liquid in the serpentine pipe 406. The combination of the two makes the overall have an excellent heat exchange cycle effect, and the entire driving structure is generated by the self-flow effect of the water flow, without consuming additional electric power resources, and is composed of a mechanical structure, which is also convenient for subsequent maintenance, reduces costs, and responds to the current energy-saving and environmental protection living concept.

[0073] Furthermore, a number of rotating rods 12 are uniformly arranged on the outer circumference of the rotating shaft 8 along its circumferential direction, and the ends of the rotating rods 12 are connected with stirring blades 13. The rotating rods 12 and the stirring blades 13 are both located between the first fixing cylinder 7 and the second fixing cylinder 10. And the cross-section of the stirring blade 13 is a fan-shaped structure. And a first magnet 14 is provided at the bottom of the stirring blade 13, and the first magnet 14 is arranged on one side of the bottom of the stirring blade 13. A second magnet 15 is correspondingly arranged below the first magnet 14, and the bottom of the second magnet 15 is fixed to the top of the sealing plate 2. The top of the first magnet 14 and the bottom of the second magnet 15 are magnetically attracted or repelled, and the end of the rotating rod 12 is rotatably connected to the outside of the rotating shaft 8. In combination Figure 11 and Figure 12It can be seen that when the rotating shaft 8 rotates, the stirring blade 13 can rotate through the setting. The stirring blade 13 is inside the upper chamber 1021, so that the rotating stirring blade 13 can stir the cooling water in the upper chamber 1021, thus ensuring the uniform temperature effect of the cooling water. At the same time, when the stirring blade 13 rotates, the first magnet 14 rotates accordingly. Since the first magnet 14 cooperates with the second magnet 15 and the first magnet 14 is arranged at the eccentric position of the stirring blade 13, when the stirring blade 13 rotates horizontally, due to the cooperation between the first magnet 14 and the second magnet 15, the whole stirring blade 13 will deflect, further improving the mixing effect of the cooling water, and further improving the overall heat dissipation and cooling effect on the battery.

[0074] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An energy storage battery cooling system, characterized in that: include: A battery box (1), wherein a support pad (3) is provided at the bottom of the battery box (1), and a first chamber (101) and a second chamber (102) are sequentially provided inside the battery box (1) from top to bottom, and a third chamber (103) is provided on both left and right sides of the battery box (1); a sealing plate (2), the sealing plate (2) being transversely fixed to the interior of the second chamber (102) and dividing the interior of the second chamber (102) into an upper chamber (1021) and a lower chamber (1022) in upper and lower directions, the interior of the upper chamber (1021) being filled with cooling water; A battery pack (4), the battery pack (4) being arranged inside the first chamber (101); A cooling component (5), the cooling component (5) being arranged inside the lower chamber (1022) and being used for spatially cooling the interior of the lower chamber (1022); and a water circulation component (6), wherein the water circulation component (6) is arranged inside the lower chamber (1022) and is used to transport the cooling water inside the upper chamber (1021) to the inside of the lower chamber (1022), and then return the cooling water to the inside of the upper chamber (1021) after being cooled by the cooling component (5) inside the lower chamber (1022); The battery pack (4) comprises a plurality of rows of battery cells (401), each row of battery cells (401) is provided with a microchannel plate (402) at the front and rear ends, and a microchannel structure (403) is provided inside the microchannel plate (402), and the microchannel structure (403) is filled with a phase change fluid, and, The battery pack (4) further comprises a serpentine tube (406) arranged inside the upper chamber (1021), one end of the serpentine tube (406) being connected to a plurality of first liquid outlet tubes (404) of the same number as the microchannel plate (402), and the other end of the serpentine tube (406) being connected to a plurality of first liquid inlet tubes (405) of the same number as the microchannel plate (402), and the ends of the first liquid inlet tubes (405) and the first liquid outlet tubes (404) are both in communication with the microchannel structure (403); The water circulation component (6) comprises: A micro water pump (601), a second liquid inlet pipe (602) and a second liquid outlet pipe (603); in, The micro water pump (601) is installed at the inner bottom end of the lower chamber (1022); one end of the second liquid inlet pipe (602) is connected to the water inlet end of the micro water pump (601), and the other end of the second liquid inlet pipe (602) extends to the interior of the upper chamber (1021); one end of the second liquid outlet pipe (603) is connected to the water outlet end of the micro water pump (601), and the other end of the second liquid outlet pipe (603) extends to the interior of the upper chamber (1021); A plurality of first fixed cylinders (7) are arranged on the second liquid inlet pipe (602), the bottom of the first fixed cylinder (7) is fixed to the inner bottom end of the lower chamber (1022), and the top of the first fixed cylinder (7) is fixed to the bottom of the sealing plate (2), a rotating shaft (8) is vertically rotatably connected at the center of the first fixed cylinder (7), and a plurality of first arc-shaped blades (9) are evenly arranged on the outside of the rotating shaft (8) along its circumferential direction; The serpentine tube (406) is provided with a plurality of second fixed tubes (10), the plurality of second fixed tubes (10) correspond to and are aligned with a plurality of first fixed tubes (7) one by one, the top of the second fixed tube (10) is fixed to the inner top of the upper chamber (1021), and, The top end of the rotating shaft (8) inside the first fixed cylinder (7) aligned with the second fixed cylinder (10) extends into the interior of the second fixed cylinder (10) and is rotationally connected to the connection point of the second fixed cylinder (10). The outside of the rotating shaft (8) is also evenly provided with second arc-shaped blades (11) located inside the second fixed cylinder (10) along its circumferential direction.

2. The energy storage battery cooling system according to claim 1, characterized in that: The microchannel structure (403) comprises: A first main channel (4031), a second main channel (4032) and a branch channel (4033); in, The first main channel (4031) and the second main channel (4032) are both opened transversely and parallelly inside the microchannel plate (402), and the end of the first main channel (4031) is connected to the end of the first liquid inlet pipe (405), and the end of the second main channel (4032) is connected to the end of the first liquid outlet pipe (404), and, Every three branch channels (4033) form a channel group, and each channel group corresponds to and is aligned with each battery cell (401) one by one.

3. The energy storage battery cooling system according to claim 1, characterized in that: The cooling component (5) comprises a semiconductor cooling sheet (501) arranged inside the lower chamber (1022), and the number of the semiconductor cooling sheets (501) is at least four, the four semiconductor cooling sheets (501) are respectively arranged at the four corners of the bottom of the lower chamber (1022), and the heat dissipation end of the semiconductor cooling sheet (501) extends to the outer bottom of the battery box (1).

4. The energy storage battery cooling system according to claim 1, characterized in that: The top end of the second liquid inlet pipe (602) is located at the top end of the interior of the upper chamber (1021), and the top end of the second liquid outlet pipe (603) is located at the bottom end of the interior of the upper chamber (1021).

5. The energy storage battery cooling system according to claim 1, characterized in that: A plurality of rotating rods (12) are evenly arranged on the outside of the rotating shaft (8) along its circumferential direction, and the ends of the rotating rods (12) are connected to stirring blades (13). Both the rotating rods (12) and the stirring blades (13) are located between the first fixed cylinder (7) and the second fixed cylinder (10), and the cross section of the stirring blades (13) is a fan-shaped structure.

6. The energy storage battery cooling system according to claim 5, characterized in that: A first magnet (14) is arranged at the bottom of the stirring blade (13), and the first magnet (14) is arranged on one side of the bottom of the stirring blade (13); a second magnet (15) is arranged one-to-one below the first magnet (14), and the bottom of the second magnet (15) is fixed to the top of the sealing plate (2); the top of the first magnet (14) and the bottom of the second magnet (15) are magnetically attracted or magnetically repelled, and, The end of the rotating rod (12) is rotationally connected to the outside of the rotating shaft (8).

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