Energy storage battery cooling system

Abstract

The invention discloses an energy storage battery cooling system, relates to the technical field of battery cooling, and solves the problems that after an existing energy storage battery is cooled through a water cooling plate, the temperature of a bottom plate of the battery is low, the temperature of the top of the battery is high, efficient use of the whole energy storage battery is still not facilitated, and the service life of the battery is influenced. And meanwhile, the production cost of the whole energy storage battery box can be increased by using a plurality of circulating fans. The energy storage battery cooling system comprises a battery box, a sealing plate, a battery pack, a cooling assembly and a water circulation assembly, according to the invention, when the phase change liquid in the micro-channel plate absorbs heat of the battery cell, the phase change liquid is changed into a gas state from a liquid state, flows into the coiled pipe from the first liquid outlet pipe after passing through the first main channel, the branch channel and the second main channel, and is changed into the liquid state from the gas state again through heat exchange of cooling water in the upper chamber; and then the liquid returns into the first main channel after passing through the first liquid inlet pipe, so that heat exchange circulation is completed, and the overall temperature of the battery cell can be excellently controlled.

Description

Technical Field

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

[0002] A large amount of heat energy will be generated during the battery charging and discharging process, so the energy storage battery box must be equipped with a cooling system.

[0003] The existing Chinese patent application with publication number CN116014287A discloses a full immersion 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, an air inlet is provided on the rear panel of the box, and an air outlet is provided on the front panel; the air inlet of the box is directly connected to the cold air outlet of the refrigeration device through a hose; a diverter plate is provided on the inner side of the rear panel of the box, and the diverter plate is opposite to the air inlet. The present invention directly connects the shell with the lithium battery box, and the cold air directly enters the box, and directly uses the power of the air supply of the air conditioner, so that the cold air enters from the rear panel of the box, is evenly dispersed to the inside of the box through the diverter plate, and then blows out from the front panel of the box, taking away the heat generated by the lithium battery, and quickly reducing the internal temperature of the energy storage lithium battery box.

[0004] However, the existing cooling system has the following defects when used:

[0005] 1. When the existing energy storage battery is in use, the maximum storage and working temperature of the battery will be limited to below 55°C, and there are two main 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, has a large heat exchange coefficient and good cooling effect; there are two ways to water cool, one is to make the battery frame directly water-cooled, and the other is to use an independent liquid cooling plate. However, whether it is external frame water cooling or independent cold plate, the existing ones are arranged at the bottom of the battery, which will lead to inconsistent thermal conductivity in the three directions of the battery size. After cooling with a cold plate, the bottom plate temperature of the battery is low, while the top temperature 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 batteries are in use, in order to ensure the overall heat exchange efficiency, electrical structures such as circulating fans are used to even out the spatial temperature, and the circulating fans are symmetrically arranged up and down or left and right. On the one hand, the use of multiple circulating fans will increase the production cost of the entire energy storage battery box, and long-term operation will also cause additional waste of electricity resources. On the other hand, the use of too many electrical structures has the disadvantages of being easy to damage, difficult to repair, and having high maintenance costs compared to the use of mechanical structures, which is not conducive to the overall efficient and long-term use of the energy storage batteries. 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 background technology.

[0008] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0009] The present invention provides an energy storage battery cooling system, comprising:

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

[0011] a sealing plate, the sealing plate being transversely fixed to the interior of the second chamber and dividing the interior of the second chamber into an upper chamber and a lower chamber from top to bottom, wherein the interior of the upper chamber is filled with cooling water;

[0012] a battery pack, the battery pack being disposed inside the first chamber;

[0013] A cooling assembly, the cooling assembly being disposed inside the lower chamber and used for spatially cooling the interior of the lower chamber;

[0014] And a water circulation component, which is arranged inside the lower chamber and is used to transport the cooling water inside the upper chamber to the inside of the lower chamber, and then return it to the inside of the upper chamber after being cooled by the cooling component inside the lower chamber.

[0015] Preferably, the battery pack comprises a plurality of rows of cells, each row of cells is provided with a microchannel plate at the front and rear ends, and a microchannel structure is provided inside the microchannel plate, the microchannel structure is filled with a phase change fluid, and,

[0016] The battery pack also includes a serpentine tube arranged inside the upper chamber, one end of the serpentine tube is connected to a plurality of first liquid outlet tubes of the same number as the microchannel plate, the other end of the serpentine tube is connected to a plurality of first liquid inlet tubes of the same number as the microchannel plate, and the ends of the first liquid inlet tubes and the first liquid outlet tubes are both connected to the microchannel structure.

[0017] Preferably, the microchannel structure comprises:

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

[0019] in,

[0020] The first main channel and the second main channel are both opened in parallel and transversely inside the microchannel plate, and the end of the first main channel is connected to the end of the first liquid inlet pipe, and the end of the second main channel is connected to the end of the first liquid outlet pipe, and,

[0021] Every three branch channels form a channel group, and each channel group corresponds to and is aligned with each battery cell one by one.

[0022] Preferably, the cooling assembly includes a semiconductor refrigeration sheet arranged inside the lower chamber, and the number of the semiconductor refrigeration sheets is at least four, the four semiconductor refrigeration sheets are respectively arranged at the four corners of the bottom of the lower chamber, and the heat dissipation end of the semiconductor refrigeration sheet extends to the outer bottom of the battery box.

[0023] Preferably, the water circulation component comprises:

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

[0025] in,

[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 to the interior of 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 to the interior of the upper chamber.

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

[0028] Preferably, a plurality of first fixed cylinders are provided on the second liquid inlet pipe, the bottom of the first fixed cylinder is fixed to the inner bottom end of the lower chamber, and the top of the first fixed cylinder is fixed to the bottom of the sealing plate, a rotating shaft is vertically rotatably connected at the center of the inside of the first fixed cylinder, and a plurality of first arc-shaped blades are evenly arranged on the outside of the rotating shaft along its circumferential direction.

[0029] Preferably, the serpentine tube is provided with a plurality of second fixed tubes, the plurality of second fixed tubes correspond to and are aligned with a plurality of first fixed tubes, the top of the second fixed tube is fixed to the inner top of the upper chamber, and,

[0030] The top end of the rotating shaft inside the first fixed tube aligned with the second fixed tube extends to the inside of the second fixed tube and is rotatably connected to the connection point of the second fixed tube. The outside of the rotating shaft is also evenly provided with second arc-shaped blades located inside the second fixed tube along its circumferential direction.

[0031] Preferably, a plurality of rotating rods are evenly arranged on the outside of the rotating shaft along its circumferential direction, and stirring blades are connected to the ends of the rotating rods. The rotating rods and the stirring blades are both located between the first fixed cylinder and the second fixed cylinder, and the cross-section of the stirring blades 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 provided below the first magnet in a one-to-one correspondence, 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 are magnetically attracted or magnetically repelled, and,

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

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

[0035] 1. In the energy storage battery cooling system, when the phase change liquid in the microchannel plate absorbs the heat of the battery cell, it changes from liquid to gas, flows into the serpentine tube from the first liquid outlet pipe through the first main channel, the branch channel and the second main channel, exchanges heat through the cooling water in the upper chamber, changes from gas to liquid again, and then returns to the first main channel through the first liquid inlet pipe to complete the heat exchange cycle. Since microchannel plates are arranged between each row of battery cells, the temperature of the battery cell as a whole can be excellently controlled, and the overall cost is lower, which can better ensure the efficient and long-term use of the energy storage battery;

[0036] 2. In the energy storage battery cooling system, a channel group is formed by every three branch channels, and each channel group corresponds to and is aligned with each battery cell one by one, so that when a single battery cell is absorbing heat, the channel group formed by the three branch channels is responsible, and 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 cell, which is more conducive to absorbing the temperature of the battery cell and improving the overall heat dissipation and cooling effect;

[0037] 3. In the energy storage battery cooling system, when the cooling water passes through the second liquid inlet pipe, the first arc blade and the rotating rod will rotate under the action of the water flow, thereby assisting the micro water pump, so that the water flow rate inside the second liquid inlet pipe is faster, and the overall heat exchange cycle effect is improved. At the same time, when the shaft rotates, the second arc blade outside the shaft will also rotate inside the second fixed cylinder, so that the second arc blade guides and transports the phase change liquid in the serpentine tube, and the flow rate of the phase change liquid in the serpentine tube is increased. The combination of the two makes the overall excellent heat exchange cycle effect, and the entire driving structure is generated by the flow effect of the water flow itself, without the need to consume additional power resources, and is composed of a mechanical structure, which is also convenient for subsequent maintenance, reducing costs, and responding to the current energy-saving and environmentally friendly life concept;

[0038] 4. In the energy storage battery cooling system, when the rotating shaft rotates, the stirring blades can rotate, and the stirring blades are inside the upper chamber, so that the rotating stirring blades can stir the cooling water in the upper chamber, thereby ensuring the uniform temperature of the cooling water. At the same time, when the stirring blades rotate, the first magnet rotates accordingly. Since the first magnet and the second magnet cooperate with each other, and the first magnet is arranged at the eccentric point of the stirring blade, when the stirring blade rotates horizontally, the first magnet and the second magnet cooperate with each other, so that the stirring blade as a whole will swing, thereby further improving the stirring effect of the cooling water, thereby further improving the overall heat dissipation and cooling effect of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0040] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "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 a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. 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 It is a schematic diagram of the bottom structure of the battery box as a whole in the present invention;

[0042] Figure 2 It is a schematic structural diagram of the internal battery pack of the battery box after the battery box is longitudinally cut;

[0043] Figure 3 The present invention Figure 2 A front view of

[0044] Figure 4 It is a partial structural schematic diagram of the internal space distribution of the battery box after longitudinal sectioning in the present invention;

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

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

[0047] Figure 7 The present invention Figure 6 The enlarged view of point A in the middle;

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

[0049] Fig. 9 It is a schematic diagram of the internal structure of the upper chamber after the battery box of the present invention is cross-sectioned;

[0050] Fig.10 It is a schematic diagram of the structure of the cooling assembly and the water circulation assembly inside the lower chamber of the present invention;

[0051] Fig.11 is a longitudinal cross-sectional view of the first fixed tube and the second fixed tube in the present invention;

[0052] Fig.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 pipe;

[0057] 5. Cooling assembly; 501. Semiconductor refrigeration sheet;

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

[0059] 7. First fixed cylinder; 8. Rotating shaft; 9. First arc-shaped blade; 10. Second fixed cylinder; 11. Second arc-shaped blade; 12. Rotating rod; 13. Stirring blade; 14. First magnet; 15. Second magnet. DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0061] See also Figure 1-Figure 12, a storage battery cooling system, comprising a battery box 1, a sealing plate 2, a battery pack 4, a cooling component 5 and a water circulation component 6, specifically, wherein:

[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 sequentially provided inside the battery box 1 from top to bottom, and a third chamber 103 is provided on both the left and right sides of the battery box 1. The support pad 3 is used to stably place the entire battery box 1. At the same time, a connecting member or other structure may be provided on the support pad 3 to enable the battery box 1 to be installed as a whole on other components to be stored. This is a prior art, so it will not be repeated here.

[0063] At the same time, the sealing plate 2 is laterally fixed to the interior of the second chamber 102, and divides the interior of the second chamber 102 into an upper chamber 1021 and a lower chamber 1022, and the interior of the upper chamber 1021 is filled with cooling water; the battery pack 4 is arranged in the first chamber 101; the cooling component 5 is arranged in the lower chamber 1022, and is used for spatial cooling of the interior of the lower chamber 1022; the water circulation component 6 is arranged in the lower chamber 1022, and is used to transport the cooling water in the upper chamber 1021 to the interior of the lower chamber 1022, and then return it to the interior of the upper chamber 1021 after being cooled by the cooling component 5 in the lower chamber 1022.

[0064] Specifically, in the present embodiment, the battery pack 4 includes several rows of battery cells 401, and 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 interior of the microchannel structure 403 is filled with a phase change liquid. In the present embodiment, the phase change liquid will vaporize after exceeding fifty degrees Celsius, such as methanol and other substances. 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 plurality of first liquid outlet pipes 404 of the same number as the microchannel plate 402, and the other end of the serpentine tube 406 is connected to a plurality of first liquid inlet pipes 405 of the same number as the microchannel plate 402, and the ends of the first liquid inlet pipe 405 and the first liquid outlet pipe 404 are both connected to the microchannel structure 403.

[0065] The above-mentioned microchannel structure 403 specifically includes a first main channel 4031, a second main channel 4032 and a branch channel 4033, wherein the first main channel 4031 and the second main channel 4032 are both opened horizontally 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.

[0066] Therefore, combined with Figure 3 , Figure 5 , Figure 6 and Figure 7 It can be seen that by arranging the microchannel plate 402 between each row of battery cells 401, the phase change liquid in the microchannel structure 403 inside the microchannel plate 402 will form a cycle 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 cooling water is stored inside the upper chamber 1021, the cooling water achieves a good cooling effect after passing through the cooling component 5 and the water circulation component 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. After passing through the first main channel 4031, the branch channel 4033 and the second main channel 4032, the liquid flows from the first liquid outlet pipe 404 into the serpentine tube 406, undergoes heat exchange through the cooling water in the upper chamber 1021, changes from gas to liquid again, and then returns to the first main channel 4031 through the first liquid inlet pipe 405, completing the heat exchange cycle. Since microchannel plates 402 are provided between each row of battery cells 401, the overall temperature of the battery cells 401 can be excellently controlled, and the overall cost is lower, which can better ensure the efficient and long-term use of the energy storage battery.

[0067] In addition, combined Figure 7 It can be seen that since every three branch channels 4033 form a channel group, each channel group corresponds to and is aligned with each battery cell 401 one by one. Therefore, when a single battery cell 401 is absorbing heat, the channel group formed by the three branch channels 4033 is responsible. In the present 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 semiconductor refrigeration sheet 501 arranged inside the lower chamber 1022, and the number of the semiconductor refrigeration sheets 501 is at least four. The four semiconductor refrigeration 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 refrigeration sheet 501 extends to the outer bottom of the battery box 1. The air inside the lower chamber 1022 is cooled by the arranged semiconductor refrigeration sheet 501, and temperature sensors are arranged at positions near the first liquid inlet pipe 405 and near the first liquid outlet pipe 404 on the above-mentioned serpentine tube 406. The front and rear temperatures in the serpentine tube 406 are compared by the two temperature sensors, and the temperature sensor is electrically connected to the semiconductor refrigeration sheet 501 by the existing technology. When the cooling effect of the temperature in the serpentine tube 406 is poor, the semiconductor refrigeration sheet 501 can be controlled to increase the power to improve the cooling effect, thereby facilitating the temperature of the battery cell 401 to be always within an effective and reasonable range.

[0069] Furthermore, the water circulation component 6 includes a micro water pump 601, a second liquid inlet pipe 602 and a second liquid outlet pipe 603, wherein 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. After the controller starts the micro water pump 601, the micro water pump 601, the second liquid outlet pipe 603 and the second liquid inlet pipe 602 are positioned so that the cooling water inside the upper chamber 1021 can be transported to the lower chamber 1022 for cooling and then transported back to the upper chamber 1021, thereby 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 sensor. When the temperature is too high, the micro water pump 601 can be controlled to increase the transmission power to improve the cooling effect.

[0070] At the same time, it is worth mentioning that the top end of the second liquid inlet pipe 602 is located at the top end of the upper chamber 1021, and the top end of the second liquid outlet pipe 603 is located at the bottom end of the upper chamber 1021. The purpose of this arrangement is that the top end of the second liquid inlet pipe 602 is located at the top end of the upper chamber 1021, so that the cooling water at the upper end of the upper chamber 1021 will be preferentially transported to the lower chamber 1022 for cooling, and the cooled cooling water will be transported to the lower end of the lower chamber 1022, thereby improving the overall circulation cooling effect and avoiding the cooling water that has just been cooled in the upper chamber 1021 from being transported to the lower chamber 1022 for cooling again.

[0071] In addition, in order to further improve the cooling effect, 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, the center of the first fixed cylinder 7 is vertically rotatably connected with a rotating shaft 8, and the outside of the rotating shaft 8 is evenly arranged with a plurality of first arc-shaped blades 9 along its circumferential direction. At the same time, a plurality of second fixed cylinders 10 are arranged on the serpentine tube 406, and the plurality of second fixed cylinders 10 correspond to and are aligned with a plurality of first fixed cylinders 7, the top of the second fixed cylinder 10 is fixed to the inner top end of the upper chamber 1021, and the top of the rotating shaft 8 inside the first fixed cylinder 7 aligned with the second fixed cylinder 10 extends to the inside of the second fixed cylinder 10, and is rotatably connected with the connection between the second fixed cylinder 10, and the outside of the rotating shaft 8 is evenly arranged with second arc-shaped blades 11 located inside the second fixed cylinder 10 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 blade 9 and the rotating rod 12 will rotate, thereby assisting the micro water pump 601, so that the water flow rate inside the second liquid inlet pipe 602 is faster, thereby improving the overall heat exchange circulation effect. At the same time, when the rotating shaft 8 rotates, the second arc blade 11 outside the rotating shaft 8 will also rotate inside the second fixed cylinder 10, thereby allowing the second arc blade 11 to guide and transport the phase change liquid in the serpentine tube 406, thereby increasing the flow rate of the phase change liquid in the serpentine tube 406. The combination of the two makes the overall heat exchange circulation effect excellent, and the entire driving structure is generated by the flow effect of the water flow itself, without the need for additional power resources, and is composed of a mechanical structure, which is also convenient for subsequent maintenance and reduces costs, responding to the current energy-saving and environmentally friendly life concept.

[0073] Furthermore, 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, and the rotating rods 12 and stirring blades 13 are both located between the first fixed cylinder 7 and the second fixed cylinder 10, and the cross-section of the stirring blade 13 is a fan-shaped structure. In addition, 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, and a second magnet 15 is arranged one by one below the first magnet 14, and the bottom of the second magnet 15 is fixed to the top of the sealing plate 2, and 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 rotatably connected to the outside of the rotating shaft 8. In combination with Fig.11 and Fig.12It can be seen that when the rotating shaft 8 rotates, the stirring blade 13 can rotate, and 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, thereby ensuring the uniform temperature 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 and the second magnet 15 cooperate with each other, and the first magnet 14 is arranged at the eccentric point of the stirring blade 13, when the stirring blade 13 rotates horizontally, the first magnet 14 and the second magnet 15 cooperate with each other, so that the stirring blade 13 as a whole will swing, thereby further improving the stirring effect of the cooling water, thereby further improving the overall heat dissipation and cooling effect of the battery.

[0074] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which 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).

2. The energy storage battery cooling system according to claim 1, characterized in that: 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 connected to the microchannel structure (403).

3. The energy storage battery cooling system according to claim 2, 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.

4. 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).

5. The energy storage battery cooling system according to claim 2, characterized in that: 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).

6. The energy storage battery cooling system according to claim 5, 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).

7. The energy storage battery cooling system according to claim 5, characterized in that: 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 interior 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.

8. The energy storage battery cooling system according to claim 7, characterized in that: 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.

9. The energy storage battery cooling system according to claim 8, 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.

10. The energy storage battery cooling system according to claim 9, 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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