Liquid cooling industrial and commercial energy storage cabinet and operation method

Abstract

The invention relates to the technical field of secondary battery energy storage, in particular to a liquid cooling industrial and commercial energy storage cabinet and an operation method. Comprising a cabinet body; the plurality of battery packs are arranged in the cabinet body; the water-cooling heat dissipation pipeline is fixedly connected in the cabinet body; the circulating pump is fixedly connected in the cabinet body, the cabinet body is fixedly connected with a liquid outlet pipe and a liquid inlet pipe, the liquid outlet pipe is communicated with the water inlet end of the circulating pump, the liquid inlet pipe is communicated with the water outlet end of the water-cooling heat dissipation pipeline, the water inlet end of the water-cooling heat dissipation pipeline is communicated with the water outlet end of the circulating pump, and the water outlet end of the water-cooling heat dissipation pipeline is communicated with the water outlet end of the circulating pump. The liquid outlet pipe and the liquid inlet pipe are fixedly connected together and are communicated with a storage tank; and the dispersing assembly is arranged in the storage tank. Heat exchange is carried out through water circulation in the storage tank and a low-temperature stratum, so that the temperature of water in the storage tank is reduced, heat dissipation is carried out on the battery pack in the cabinet body, the use frequency of a liquid cooling unit in the cabinet body is reduced, and therefore energy waste is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of secondary battery energy storage, and in particular to a liquid-cooled industrial and commercial energy storage cabinet and an operating method thereof. Background Art

[0002] The liquid-cooled industrial and commercial energy storage cabinet is an advanced energy storage system designed for industrial and commercial applications. By integrating efficient liquid cooling technology, it achieves precise temperature control and efficient heat dissipation of the battery modules, ensuring that the secondary battery cells always operate within the optimal operating temperature range. The system has high energy density, excellent heat dissipation efficiency, extended cycle life and outstanding safety performance, and is suitable for a variety of energy storage scenarios, including but not limited to grid-side energy storage, industrial and commercial user-end energy storage, and renewable energy energy storage projects.

[0003] Liquid-cooled industrial and commercial energy storage cabinets are one of the key devices in the field of photovoltaic energy storage. Their application has demonstrated a high level of maturity and technical advantages. However, current energy storage systems face a major problem: when the battery pack is charging or discharging, a large amount of heat energy is generated, which requires the liquid cooling device to absorb and discharge this heat in a timely and effective manner. Given that most photovoltaic energy storage facilities are located in northwest my country, where daytime temperatures are high, even when the energy storage cabinet is not in the charging or discharging state, it still relies on the built-in liquid cooling system to maintain a constant battery pack temperature. The resulting continuous heat dissipation demand inevitably results in a large amount of energy being used to cool the battery pack, resulting in a significant waste of resources. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a liquid-cooled industrial and commercial energy storage cabinet and an operating method.

[0005] The technical implementation scheme of the present invention is: a liquid-cooled industrial and commercial energy storage cabinet, comprising: a cabinet body; a plurality of battery packs, all arranged in the cabinet body; a water-cooled heat dissipation pipe, fixedly connected in the cabinet body, for dissipating heat for all the battery packs; a circulating pump, fixedly connected in the cabinet body, the cabinet body being fixedly connected with a liquid outlet pipe and a liquid inlet pipe, the liquid outlet pipe being connected to the water inlet end of the circulating pump, the liquid inlet pipe being connected to the water outlet end of the water-cooled heat dissipation pipe, the water inlet end of the water-cooled heat dissipation pipe being connected to the water outlet end of the circulating pump, the liquid outlet pipe and the liquid inlet pipe being fixedly connected together and connected to a storage tank located below the cabinet body; a dispersion component, arranged in the storage tank, for evenly dispersing the water in the liquid inlet pipe and flowing along the inner wall of the storage tank.

[0006] Furthermore, the dispersion component includes: a turntable, which is sealed and rotatably connected to the storage tank; a connecting shell, which is sealed and rotatably connected to the liquid inlet pipe, and the connecting shell is located in the storage tank; a plurality of connecting pipes, all of which are fixedly connected between the turntable and the connecting shell, and the connecting shell is connected to the storage tank through all the connecting pipes; and a driving component, which is arranged in the storage tank and is used to drive the turntable to rotate.

[0007] Furthermore, the driving assembly includes: a transmission shaft, rotatably connected to the interior of the storage tank, and the transmission shaft is fixedly connected to the turntable; a turbofan, fixedly connected to the transmission shaft, and used to drive the transmission shaft to rotate with the help of the flow of water in the storage tank; a heat exchange assembly, arranged in the storage tank, and used to change the flow state of water in the liquid inlet pipe along the inner wall of the storage tank.

[0008] Furthermore, the heat exchange component includes: an inner shell, which is fixedly connected to the inside of the storage tank, and the inner shell and the storage tank cooperate to form a heat dissipation cavity, and the inner shell is sealed and rotatably connected to the turntable; there are several guide plates, all of which are fixedly connected to the heat dissipation cavity between the inner shell and the storage tank, and the bottom of the inner shell is provided with circumferentially distributed liquid outlet holes.

[0009] Furthermore, the guide plate has a V-shaped structure, the sharp end of the guide plate is vertically facing the connecting shell, and the side of the guide plate close to the inner shell is higher than the side close to the storage tank, so that water adheres to the inner wall of the storage tank when flowing along the guide plate.

[0010] Furthermore, it also includes: a sealing component, which is arranged on the inner shell and is used to seal all the liquid outlet holes on the inner shell, and cut off the communication between the heat dissipation cavity and the storage tank. The sealing component includes: a swivel, which is rotatably connected to the inner shell, and the swivel is provided with the same number of flow holes as the liquid outlet holes. The swivel is used to seal all the liquid outlet holes, and the inner shell is provided with a moving component for driving the swivel to rotate.

[0011] Furthermore, the moving assembly includes: a trigger rod, slidably connected to the inner shell; a first clamping block, fixedly connected to the trigger rod, the swivel is provided with an inclined groove, and the first clamping block slides in the inclined groove; a float, slidably connected to the transmission shaft, and the float is used to drive the trigger rod to move; a limiting assembly, provided on the inner shell, for stabilizing the height of the trigger rod.

[0012] Furthermore, the limiting assembly includes: a limiting serrated rod, fixedly connected to the inner shell; a second clamping block, slidably connected to the trigger rod, and the limiting serrated rod is used to limit the second clamping block; and an elastic element, arranged between the trigger rod and the second clamping block.

[0013] Furthermore, the height of the bottom of the inner shell is lower than the height of the bottom of the trigger rod, so that the heat dissipation cavity and the storage tank cooperate to form a communicating vessel.

[0014] A method for operating a liquid-cooled industrial and commercial energy storage cabinet, using the above-mentioned liquid-cooled industrial and commercial energy storage cabinet, includes the following steps: Step 1: When the battery pack needs to be cooled, the circulation pump is turned on to draw cold water from the storage tank into the water-cooling heat dissipation pipe. The water then flows back into the heat dissipation cavity through the liquid inlet pipe and into the storage tank through the liquid outlet. During this period, the cold water absorbs the heat generated by the battery pack as it passes through the water-cooling heat dissipation pipe. Step 2: When the water in the liquid inlet pipe flows along the inner wall of the storage tank, it enters the heat dissipation cavity evenly through several connecting pipes and is changed in flow direction by evenly distributed guide plates. During this period, the water dissipates the absorbed heat. Step 3: After the water in the connecting pipe enters the heat dissipation chamber, the heat dissipation chamber storage tank is in a cut-off state. Water continues to accumulate in the heat dissipation chamber until the liquid level in the storage tank drives the float to squeeze the bottom of the trigger rod, causing the trigger rod to drive the rotating ring to rotate through the first block and the inclined groove, thereby releasing the cut-off state between the heat dissipation chamber and the storage tank. At this time, the water in the heat dissipation chamber enters the storage tank. Step 4: After the water in the heat dissipation cavity enters the storage tank, the water level in the storage tank rises, the float moves upward and pushes the top of the trigger rod, so that the trigger rod drives the swivel to reset and rotate through the first block and the inclined groove. The heat dissipation cavity and the storage tank are in a partitioned state. This cycle continues until the heat dissipation of the battery pack stops, the circulation pump is turned off, and the water in the water-cooled heat dissipation pipe flows back to the storage tank.

[0015] The present invention has the following advantages: 1. The present invention exchanges heat with the low-temperature stratum through the water circulation in the storage tank, thereby reducing the water temperature in the storage tank and dissipating heat to the battery pack in the cabinet, reducing the frequency of use of the liquid cooling unit in the cabinet, thereby reducing energy waste.

[0016] 2. The flowing water is diverted multiple times through the guide plate, which prolongs the flow path of the water in the storage tank and the heat exchange time between the water and the external soil layer. At the same time, the fitting position of the water and the inner wall of the storage tank is continuously changed to make the water evenly exchange heat with the external soil layer.

[0017] 3. By periodically blocking the heat dissipation cavity, the degree of mixing of water in the heat dissipation cavity and water in the storage tank is reduced, and at the same time, the heat exchange time between the water in the heat dissipation cavity and the external low-temperature soil layer is prolonged, so that the heat of the water in the heat dissipation cavity is quickly dissipated. At the same time, the heat dissipation cavity and the storage tank form a communicating vessel, and the water with insufficient exchange time is left in the heat dissipation cavity.

[0018] 4. The second block is limited by the limiting saw teeth to improve the stability of the trigger rod and reduce the probability of the trigger rod moving when it is not in contact with the float, thereby reducing the probability of the heat dissipation cavity being blocked or opened prematurely. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the battery pack and water-cooling heat dissipation pipe of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the storage tank and the inner shell of the present invention; Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the turntable and the connecting shell of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the guide plate of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the swivel of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the first clamping block and the inclined groove of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting sawtooth rod and the second clamping block of the present invention.

[0020] The meanings of the reference numerals in the figure are: 1: cabinet, 2: battery pack, 3: water-cooled heat dissipation pipe, 4: circulation pump, 5: liquid outlet pipe, 6: liquid inlet pipe, 7: storage tank, 201: turntable, 202: connecting shell, 203: connecting pipe, 204: transmission shaft, 205: turbofan, 301: inner shell, 302: guide vane, 303: liquid outlet hole, 304: heat dissipation cavity, 401: swivel, 402: circulation hole, 403: trigger rod, 404: first clamping block, 405: inclined groove, 406: float, 407: limiting serrated rod, 408: second clamping block, 409: elastic element. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] When a battery pack is charging or discharging, it generates a large amount of heat, which requires the liquid cooling device to efficiently absorb and quickly dissipate heat. Given that many photovoltaic energy storage facilities are located in northwest my country, where daytime temperatures are generally high, even when the energy storage cabinet is not charging or discharging, its internal liquid cooling system still needs to be activated to ensure the temperature of the battery pack is stable. This continuous heat dissipation requirement results in a large amount of energy being used to maintain battery pack cooling, resulting in significant resource waste. This situation not only increases operating costs but also reduces the energy efficiency of the overall system.

[0023] A liquid-cooled industrial and commercial energy storage cabinet, such as Figure 1-Figure 3 As shown, it includes: a cabinet 1; a plurality of battery packs 2, all of which are arranged in the cabinet 1; a water-cooled heat dissipation pipe 3, fixedly connected in the cabinet 1, for dissipating heat for all the battery packs 2; a circulating pump 4, fixedly connected in the cabinet 1, and the cabinet 1 is fixedly connected with a liquid outlet pipe 5 and a liquid inlet pipe 6, the liquid outlet pipe 5 is connected to the water inlet end of the circulating pump 4, the liquid inlet pipe 6 is connected to the water outlet end of the water-cooled heat dissipation pipe 3, the water inlet end of the water-cooled heat dissipation pipe 3 is connected to the water outlet end of the circulating pump 4, the liquid outlet pipe 5 and the liquid inlet pipe 6 are fixedly connected together and are connected to a storage tank 7 located below the cabinet 1; a dispersion component is arranged in the storage tank 7, for evenly dispersing the water in the liquid inlet pipe 6 and flowing along the inner wall of the storage tank 7.

[0024] In the above scheme, a water-cooled heat dissipation unit is provided at the bottom of the cabinet 1, and the water-cooled heat dissipation unit is connected to all the battery packs 2 for dissipating heat for all the battery packs 2. A temperature monitoring device is provided in each battery pack 2 for real-time monitoring of the temperature of the battery pack 2 and real-time regulation of the heat dissipation rate of the battery pack 2. The water-cooled heat dissipation pipe 3 is composed of a water inlet pipe, a plurality of heat-absorbing plates and a water outlet pipe. The plurality of heat-absorbing plates are connected to the water inlet pipe and the water outlet pipe, and the plurality of heat-absorbing plates are staggered with the plurality of battery packs 2 for absorbing the heat generated by the battery pack 2. The storage tank 7 is made of aluminum alloy with excellent thermal conductivity and light weight. The present invention performs heat exchange with the low-temperature stratum through the water circulation in the storage tank 7, thereby reducing the water temperature in the storage tank 7 and dissipating heat for the battery pack 2 in the cabinet 1, reducing the frequency of use of the liquid-cooled heat dissipation unit in the cabinet 2, thereby reducing energy waste.

[0025] Specifically, such as Figure 3 and Figure 4 As shown, the dispersion component includes: a turntable 201, which is sealed and rotatably connected to the storage tank 7; a connecting shell 202, which is sealed and rotatably connected to the liquid inlet pipe 6, and the connecting shell 202 is located in the storage tank 7; there are several connecting pipes 203, all of which are fixedly connected between the turntable 201 and the connecting shell 202, and the connecting shell 202 is connected to the storage tank 7 through all the connecting pipes 203; a driving component, which is arranged in the storage tank 7 and is used to drive the turntable 201 to rotate.

[0026] In the above scheme, the turntable 201 is located at the upper part of the storage tank 7, the connecting shell 202 is located above the turntable 201, and the number of connecting pipes 203 can be freely set according to actual conditions. All connecting pipes 203 are distributed on the turntable 201 at equal intervals in the circumferential direction. The connection between the connecting pipes 203 and the turntable 201 is close to the inner wall of the storage tank 7, which is used to make the water that absorbs heat flow along the inner wall of the storage tank 7, thereby improving the heat dissipation rate of the water.

[0027] Specifically, such as Figure 3 、 Figure 4 and Figure 6 As shown, the driving assembly includes: a transmission shaft 204, which is rotatably connected to the inside of the storage tank 7 and is fixedly connected to the turntable 201; a turbofan 205, which is fixedly connected to the transmission shaft 204 and is used to drive the transmission shaft 204 to rotate with the help of the flow of water in the storage tank 7; a heat exchange assembly, which is arranged in the storage tank 7 and is used to change the flow state of water in the liquid inlet pipe 6 along the inner wall of the storage tank 7.

[0028] In the above scheme, the central axis of the transmission shaft 204 is colinear with the central axis of the turntable 201, and the turbofan 205 is located at the bottom of the transmission shaft 204 and above the liquid outlet pipe 5. When the water in the storage tank 7 flows into the liquid outlet pipe 5, the turbofan 205 is driven to rotate, and then the several connecting pipes 203 are driven to rotate through the transmission shaft 204 and the turntable 201, so that the reflux water flows evenly along the inner wall of the storage tank 7.

[0029] Specifically, such as Figure 3 and Figure 5 As shown, the heat exchange component includes: an inner shell 301, which is fixedly connected to the inside of the storage tank 7, and the inner shell 301 and the storage tank 7 cooperate to form a heat dissipation cavity 304, and the inner shell 301 is sealed and rotatably connected to the turntable 201; there are several guide vanes 302, which are all fixedly connected to the heat dissipation cavity 304 between the inner shell 301 and the storage tank 7, and the bottom of the inner shell 301 is provided with circumferentially distributed liquid outlets 303; the guide vanes 302 are V-shaped structures, and the sharp part of the guide vanes 302 is vertically facing the connecting shell 202, and the side of the guide vanes 302 close to the inner shell 301 is higher than the side close to the storage tank 7, so that water adheres to the inner wall of the storage tank 7 when flowing along the guide vanes 302.

[0030] In the above scheme, the heat dissipation cavity 304 is an annular structure, the top of the heat dissipation cavity 304 is connected to a number of connecting pipes 203, and the bottom of the heat dissipation cavity 304 is connected to the lower part of the storage tank 7. The two adjacent guide plates 302 at different heights are staggered and distributed to divert water, extend the distance that water flows along the inner wall of the storage tank 7, extend the heat exchange time between water and the external soil layer, and continuously change the flow state of water. In this way, the fitting position of water and the inner wall of the storage tank 7 is changed, so that the water can evenly exchange heat with the external soil layer. The number of liquid outlet holes 303 can be freely set, and the liquid outlet holes 303 are circumferentially evenly distributed at the bottom of the inner shell 301.

[0031] Before using the device, fill the storage tank 7 with water, then bury the storage tank 7 in the soil layer, and place the cabinet 1 on the ground above the soil layer where the storage tank 7 is located, so that the heat of the water in the storage tank 7 is exchanged with the low-temperature soil layer, and the water temperature in the storage tank 7 is lowered. When the battery pack 2 in the cabinet 1 needs to dissipate heat (charging, discharging, or when the temperature in the cabinet 1 is higher than the temperature setting value), the circulation pump 4 is turned on at this time, so that the circulation pump 4 extracts the water in the storage tank 7 buried in the bottom layer through the liquid outlet pipe 5. The water in the storage tank 7 moves upward along the liquid outlet pipe 5 due to the extraction force, and the liquid level of the water in the storage tank 7 begins to drop. The water enters the water inlet end of the water-cooling heat dissipation pipe 3 along the liquid outlet pipe 5 and the circulation pump 4, and the water flows in the water-cooling heat dissipation pipe 3 to cool multiple batteries. The heat generated by group 2 is absorbed, and the water carrying the heat enters the liquid inlet pipe 6 from the water outlet end of the water-cooled heat dissipation pipe 3, and then flows from the liquid inlet pipe 6 to the connecting shell 202. The water enters the several connecting pipes 203 distributed at equal intervals in the circumferential direction from the connecting shell 202, and the water enters the heat dissipation cavity 304 along the several connecting pipes 203, and flows along the heat dissipation cavity 304 and finally enters the storage tank 7 from the liquid outlet holes 303 of the annular array. At this time, the water in the storage tank 7 forms a circulation loop, and the liquid level of the water in the storage tank 7 becomes stable. The water circulation in the storage tank 7 is used to exchange heat with the low-temperature formation, so that the temperature of the water in the storage tank 7 is reduced and the heat is dissipated to the battery group 2 in the cabinet 1, thereby reducing the frequency of use of the liquid cooling unit in the cabinet 1, thereby reducing energy waste.

[0032] When the water in the storage tank 7 enters the liquid outlet pipe 5 under the extraction force, the water pushes the turbofan 205 to rotate, and the turbofan 205 drives the turntable 201 to rotate through the transmission shaft 204, and the turntable 201 drives the multiple connecting pipes 203 distributed at equal intervals in the circumference to rotate synchronously, so that the water enters the heat dissipation cavity 304 evenly in the circumference and flows downward along the cavity. The water flows downward and contacts the evenly distributed guide plates 302. The evenly distributed guide plates 302 divert the downward-flowing water for multiple times, extending the path of the water flowing along the storage tank 7 and the heat exchange time between the water and the external soil layer. The water passes through the guide plates 302 for multiple deflections, which continuously changes the flow state of the water. , so that the water can evenly exchange heat with the external soil layer, and the heat in the water is absorbed by the external soil layer as soon as possible, and finally enters the storage tank 7 through the liquid outlet holes 303 of the annular array, and participates in the circulation again to absorb the heat in the battery pack 2, until the device no longer needs to dissipate heat or the water temperature in the storage tank 7 is difficult to effectively dissipate heat for the battery pack 2, causing the temperature of the battery pack 2 to continue to rise. At this time, the circulation pump 4 is turned off, and the water in the water-cooled heat dissipation pipe 3 is returned to the storage tank 7 along the liquid outlet pipe 5 and the liquid inlet pipe 6. At this time, the liquid level of the water in the storage tank 7 returns to its initial state. When the water in the storage tank 7 needs to be used for heat dissipation again, the above steps are repeated.

[0033] When the water in the storage tank 7 is unable to effectively dissipate the heat of the battery pack 2, the circulation pump 4 is turned off and the water-cooled heat dissipation unit in the cabinet 1 is turned on to allow the heat dissipation unit to dissipate the heat of the battery packs 2, thereby rapidly reducing the temperature of the battery packs 2 to prevent the battery packs 2 from being damaged by excessive temperature. This process is repeated until the temperature of the battery packs 2 stabilizes to a safe value. The heat dissipation unit in the cabinet 1 is then turned off and the circulation pump 4 is turned on again to allow the water in the storage tank 7 to dissipate the heat of the battery packs 2. When the above problem occurs again, the above steps are repeated.

[0034] In a further embodiment, Figure 6 and Figure 7 As shown, it also includes: a blocking component, which is arranged on the inner shell 301 and is used to block all the liquid outlet holes 303 on the inner shell 301, and cut off the communication between the heat dissipation cavity 304 and the storage tank 7. The blocking component includes: a swivel 401, which is rotatably connected to the inner shell 301, and the swivel 401 is provided with the same number of flow holes 402 as the liquid outlet holes 303. The swivel 401 is used to block all the liquid outlet holes 303, and the inner shell 301 is provided with a moving component for driving the swivel 401 to rotate.

[0035] In the above scheme, the rotating ring 401 is located at the bottom of the inner shell 301, and all the flow holes 402 are also distributed at equal intervals in the circumferential direction on the rotating ring 401. The initial flow holes 402 and the liquid outlet holes 303 are in a staggered state, that is, the heat dissipation cavity 304 and the lower part of the storage tank 7 are in a disconnected state.

[0036] Specifically, such as Figure 6-Figure 8As shown, the moving assembly includes: a trigger rod 403, which is slidably connected to the inner shell 301; a first clamping block 404, which is fixedly connected to the trigger rod 403, and the swivel 401 is provided with an inclined groove 405, and the first clamping block 404 slides in the inclined groove 405; a float 406, which is slidably connected to the transmission shaft 204, and the float 406 is used to drive the trigger rod 403 to move; a limiting assembly, which is provided on the inner shell 301 and is used to stabilize the height of the trigger rod 403.

[0037] In the above scheme, the float 406 is made of polyurethane foam material with low density, good water resistance, and is not easy to absorb water and deform. The float 406 drives the trigger rod 403 to slide upward or downward according to the liquid level of the water in the storage tank 7. The trigger rod 403 slides upward to drive the swivel 401 to rotate, and cuts off the connection between the heat dissipation cavity 304 and the lower part of the storage tank 7. The trigger rod 403 slides downward to connect the heat dissipation cavity 304 with the lower part of the storage tank 7. By periodically blocking the heat dissipation cavity 304, the degree of mixing between the water in the heat dissipation cavity 304 and the water in the storage tank 7 is reduced, and at the same time, the heat exchange time between the water in the heat dissipation cavity 304 and the external low-temperature soil layer is extended, so that the heat of the water in the heat dissipation cavity 304 can be quickly dissipated.

[0038] Specifically, such as Figure 6 and Figure 8 As shown, the limiting assembly includes: a limiting serrated rod 407, fixedly connected to the inner shell 301; a second clamping block 408, slidably connected to the trigger rod 403, and the limiting serrated rod 407 is used to limit the second clamping block 408; an elastic element 409, which is arranged between the trigger rod 403 and the second clamping block 408; the height of the bottom of the inner shell 301 is lower than the height of the bottom of the trigger rod 403, which is used to make the heat dissipation cavity 304 and the storage tank 7 cooperate to form a communicating vessel.

[0039] In the above scheme, the second block 408 has symmetrically distributed inclined surfaces, and the second block 408 is limited by the limiting serrated rod 407, thereby improving the stability of the trigger rod 403 and reducing the probability of the trigger rod 403 moving when it is not in contact with the float 406, thereby reducing the probability of the heat dissipation cavity 304 being blocked or opened prematurely. The elastic element 409 is a spring, which is used to push the second block 408 to reset. The height of the bottom of the inner shell 301 is lower than the height of the bottom of the trigger rod 403. The heat dissipation cavity 304 and the storage tank 7 form a communicating vessel, so that the water at the bottom of the heat dissipation cavity 304 enters the storage tank 7, while the water at the top remains in the heat dissipation cavity 304.

[0040] Before the water in the storage tank 7 dissipates heat for the battery packs 2, the water in the storage tank 7 is in a full state. At this time, the float 406 is subjected to the buoyancy of the storage tank 7 to generate an upward thrust on the top of the trigger rod 403. At this moment, the first block 404 is located at the top of the inclined groove 405, that is, the flow holes 402 distributed at equal intervals in the circumferential direction on the rotating ring 401 are staggered with the liquid outlet holes 303 distributed at equal intervals in the circumferential direction. The liquid outlet holes 303 are in a blocked state. The water in the heat dissipation cavity 304 cannot enter the lower part of the storage tank 7. The water in the storage tank 7 is extracted by the circulating pump 4 through the liquid outlet pipe 5 and enters the water-cooled heat dissipation cavity. After passing through the pipe 3, the water level in the storage tank 7 gradually decreases. During this period, when the water level in the storage tank 7 is the same height as the float 406, the float 406 moves downward synchronously with the water level in the storage tank 7 under the action of gravity and buoyancy until the float 406 is separated from the top of the trigger rod 403. As the water level in the storage tank 7 decreases, the water absorbs heat through the water-cooled heat dissipation pipe 3, enters the liquid inlet pipe 6, and enters the heat dissipation cavity 304 along the liquid inlet pipe 6, the connecting shell 202 and the connecting pipe 203. At this time, the float 406 follows the liquid level to drop until it contacts the bottom of the trigger rod 403 and generates extrusion.

[0041] When the float 406 contacts the bottom of the trigger rod 403, the water in the storage tank 7 is about to be drained, but the bottom has not yet been reached, and the water in the heat dissipation chamber 304 is about to be filled. At this time, the float 406 squeezes the bottom of the trigger rod 403, causing the trigger rod 403 to drive the first block 404 to move downward, and the first block 404 slides downward along the inclined groove 405, causing the first block 404 to push the swivel 401 to rotate, and the swivel 401 drives the flow holes 402 uniformly distributed on its circumference to coincide with the corresponding liquid outlet holes 303, so that the heat dissipation chamber 304 is connected to the lower part of the storage tank 7. At this time, the water in the heat dissipation chamber 304 enters the storage tank 7 through several liquid outlet holes 303, and the liquid level of the water in the storage tank 7 begins to rise, and drives the float 406 to move upward until the float 406 contacts the top of the trigger rod 403. At this time, the trigger rod 4 03 drives the first block 404 to slide upward along the inclined groove 405, and the rotating ring 401 is reset and rotated, so that the circulation hole 402 and the corresponding liquid outlet hole 303 are staggered, and the connection between the heat dissipation cavity 304 and the lower part of the storage tank 7 is cut off. The water in the storage tank 7 continues to flow along the liquid outlet pipe 5 into the water-cooled heat dissipation pipe 3, while absorbing the heat of the battery pack 2, and flows back to the heat dissipation cavity 304 along the liquid inlet pipe 6 until the float 406 contacts the bottom of the trigger rod 403 again and is squeezed. The above steps are repeated. The cycle is repeated until the heat dissipation of the battery pack 2 by the water in the storage tank 7 is stopped. By periodically blocking the heat dissipation cavity 304, the mixing degree of the water in the heat dissipation cavity 304 and the water in the storage tank 7 is reduced, and the heat exchange time between the water in the heat dissipation cavity 304 and the external low-temperature soil layer is prolonged, so that the heat of the water in the heat dissipation cavity 304 is quickly dissipated.

[0042] When the heat dissipation chamber 304 is connected with the lower part of the storage tank 7, the water in the heat dissipation chamber 304 enters the storage tank 7. Since the heat dissipation chamber 304 and the storage tank 7 form a communicating vessel, after the heat dissipation chamber 304 is connected with the lower part of the storage tank 7, the water at the bottom of the heat dissipation chamber 304 first enters the storage tank 7, the water level in the heat dissipation chamber 304 decreases, and the liquid level in the storage tank 7 increases until the float 406 contacts the top of the trigger rod 403. At this time, the rotating ring 401 rotates to block the liquid outlet 303. At this time, the liquid level in the heat dissipation chamber 304 is level with the liquid level in the storage tank 7, and the water at the top of the heat dissipation chamber 304 (the water that has just entered the heat dissipation chamber 304 through several connecting pipes 203 and has a short heat exchange time with the external soil layer) is retained inside and cannot enter the storage tank 7. The water that has just entered the heat dissipation chamber 304 is retained inside the communicating vessel formed by the heat dissipation chamber 304 and continues to exchange heat with the external soil layer, thereby dissipating the heat of the water in the heat dissipation chamber 304.

[0043] During the movement of the trigger rod 403 (here the downward movement of the trigger rod 403 is explained), the trigger rod 403 drives the second block 408 thereon to move downward synchronously, the limiting sawtooth rod 407 squeezes the second block 408, and the elastic element 409 is compressed. When the trigger rod 403 stops moving downward, the elastic element 409 pushes the second block 408 to reset, and the second block 408 is again stuck in the limiting sawtooth rod 407, so that the limiting sawtooth rod 407 limits the second block 408. By limiting the second block 408 by the limiting sawtooth rod 407, the stability of the trigger rod 403 is improved, and the probability of the trigger rod 403 moving when it is not in contact with the float 406 is reduced, thereby reducing the probability of the heat dissipation cavity 304 being blocked or opened prematurely.

[0044] When the water in the storage tank 7 stops cooling the battery pack 2, the circulation pump 4 is turned off, and the water in the water-cooling heat dissipation pipe 3 flows back into the storage tank 7. The water level in the storage tank 7 rises, causing the float 406 to move upward and push the trigger rod 403, again isolating the connection between the heat dissipation cavity 304 and the lower part of the storage tank 7. This continues until the water in the water-cooling heat dissipation pipe 3 flows back into the storage tank 7. When the water in the storage tank 7 is needed again to cool the battery pack 2, the above steps are repeated.

[0045] In a further embodiment, Figures 1-8 As shown, a method for operating a liquid-cooled industrial and commercial energy storage cabinet is provided, which uses the above-mentioned liquid-cooled industrial and commercial energy storage cabinet and includes the following steps: Step 1: When the battery pack 2 needs to be cooled, the circulation pump 4 is turned on to pump cold water from the storage tank 7 into the water-cooling heat dissipation pipe 3. The water then flows back into the heat dissipation cavity 304 through the liquid inlet pipe 6 and into the storage tank 7 through the liquid outlet 303. During this time, the cold water absorbs the heat generated by the battery pack 2 while passing through the water-cooling heat dissipation pipe 3. Step 2: When the water in the liquid inlet pipe 6 flows along the inner wall of the storage tank 7, it evenly enters the heat dissipation cavity 304 through the connecting pipes 203 and is redirected by the evenly distributed guide vanes 302. During this process, the water dissipates the absorbed heat. Step 3: After the water in the connecting pipe 203 enters the heat dissipation chamber 304, the heat dissipation chamber 304 and the storage tank 7 are in a cut-off state. Water continues to accumulate in the heat dissipation chamber 304 until the liquid level in the storage tank 7 drives the float 406 to squeeze the bottom of the trigger rod 403, causing the trigger rod 403 to rotate the rotating ring 401 through the first block 404 and the inclined groove 405, thereby releasing the cut-off state between the heat dissipation chamber 304 and the storage tank 7. At this time, the water in the heat dissipation chamber 304 enters the storage tank 7. Step 4: After the water in the heat dissipation chamber 304 enters the storage tank 7, the water level in the storage tank 7 rises, and the float 406 moves upward to push the top of the trigger rod 403, so that the trigger rod 403 drives the rotating ring 401 to reset and rotate through the first block 404 and the inclined groove 405. The heat dissipation chamber 304 and the storage tank 7 are in a partitioned state. This cycle continues until the heat dissipation of the battery pack 2 stops, and the circulation pump 4 is turned off to allow the water in the water-cooled heat dissipation pipe 3 to flow back into the storage tank 7.

[0046] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A liquid-cooled industrial and commercial energy storage cabinet, Its characteristics include: Cabinet (1); A plurality of battery packs (2) are arranged in the cabinet (1); A water-cooled heat dissipation pipe (3) is fixedly connected to the cabinet (1) and is used to dissipate heat for all the battery packs (2); A circulation pump (4) is fixedly connected to the cabinet (1); the cabinet (1) is fixedly connected with a liquid outlet pipe (5) and a liquid inlet pipe (6); the liquid outlet pipe (5) is communicated with the water inlet end of the circulation pump (4); the liquid inlet pipe (6) is communicated with the water outlet end of the water-cooling heat dissipation pipe (3); the water inlet end of the water-cooling heat dissipation pipe (3) is communicated with the water outlet end of the circulation pump (4); the liquid outlet pipe (5) and the liquid inlet pipe (6) are fixedly connected together and communicated with a storage tank (7) located below the cabinet (1); A dispersion component is arranged in the storage tank (7) and is used to evenly disperse the water in the liquid inlet pipe (6) and flow along the inner wall of the storage tank (7).

2. A liquid-cooled industrial and commercial energy storage cabinet according to claim 1, characterized in that: The dispersed components include: A rotating disk (201) is sealed and rotatably connected to the storage tank (7); A communication shell (202) is sealingly and rotatably connected to the liquid inlet pipe (6), and the communication shell (202) is located in the storage tank (7); There are a plurality of communicating pipes (203), all of which are fixedly connected between the rotating disk (201) and the communicating shell (202); the communicating shell (202) is connected to the storage tank (7) through all of the communicating pipes (203); A driving assembly is disposed in the storage tank (7) and is used to drive the turntable (201) to rotate.

3. A liquid-cooled industrial and commercial energy storage cabinet according to claim 2, characterized in that: The drive assembly includes: A transmission shaft (204) is rotatably connected to the interior of the storage tank (7), and the transmission shaft (204) is fixedly connected to the turntable (201); A turbofan (205) is fixedly connected to the transmission shaft (204) and is used to drive the transmission shaft (204) to rotate by means of the flow of water in the storage tank (7); A heat exchange component is arranged in the storage tank (7) and is used to change the flow state of water in the liquid inlet pipe (6) along the inner wall of the storage tank (7).

4. A liquid-cooled industrial and commercial energy storage cabinet according to claim 3, characterized in that: The heat exchange component includes: An inner shell (301) is fixedly connected to the interior of the storage tank (7), and the inner shell (301) cooperates with the storage tank (7) to form a heat dissipation cavity (304), and the inner shell (301) is sealed and rotatably connected to the turntable (201); There are a plurality of guide plates (302), all of which are fixedly connected to the heat dissipation cavity (304) between the inner shell (301) and the storage tank (7). The bottom of the inner shell (301) is provided with circumferentially distributed liquid outlet holes (303).

5. A liquid-cooled industrial and commercial energy storage cabinet according to claim 4, characterized in that: The guide plate (302) is a V-shaped structure, with the sharp end of the guide plate (302) facing vertically toward the connecting shell (202), and the side of the guide plate (302) close to the inner shell (301) is higher than the side close to the storage tank (7), so that water adheres to the inner wall of the storage tank (7) when flowing along the guide plate (302).

6. A liquid-cooled industrial and commercial energy storage cabinet according to claim 5, characterized in that: Also included are: A blocking component is provided on the inner shell (301) and is used to block all the liquid outlet holes (303) on the inner shell (301) to cut off the communication between the heat dissipation cavity (304) and the storage tank (7). The blocking component comprises: A rotating ring (401) is rotatably connected to the inner shell (301), the rotating ring (401) is provided with the same number of flow holes (402) as the liquid outlet holes (303), the rotating ring (401) is used to block all the liquid outlet holes (303), and the inner shell (301) is provided with a moving component for driving the rotating ring (401) to rotate.

7. A liquid-cooled industrial and commercial energy storage cabinet according to claim 6, characterized in that: The mobile component includes: A trigger rod (403) is slidably connected to the inner shell (301); A first clamping block (404) is fixedly connected to the trigger rod (403); the rotating ring (401) is provided with an inclined groove (405); and the first clamping block (404) slides in the inclined groove (405); A float (406) is slidably connected to the transmission shaft (204), and the float (406) is used to drive the trigger rod (403) to move; A limiting component is provided on the inner shell (301) and is used to stabilize the height of the trigger rod (403).

8. A liquid-cooled industrial and commercial energy storage cabinet according to claim 7, characterized in that: The limiting component includes: A limiting sawtooth rod (407) fixedly connected to the inner shell (301); A second clamping block (408) is slidably connected to the trigger rod (403), and the limiting sawtooth rod (407) is used to limit the second clamping block (408); The elastic element (409) is arranged between the trigger rod (403) and the second clamping block (408).

9. A liquid-cooled industrial and commercial energy storage cabinet according to claim 8, characterized in that: The height of the bottom of the inner shell (301) is lower than the height of the bottom of the trigger rod (403), so that the heat dissipation cavity (304) and the storage tank (7) cooperate to form a communicating vessel.

10. A method for operating a liquid-cooled industrial and commercial energy storage cabinet, according to claim 9, wherein the method comprises: The following steps are involved: Step 1: When the battery pack (2) needs to be cooled, the circulation pump (4) is turned on to draw the cold water in the storage tank (7) into the water-cooling heat dissipation pipe (3), and the cold water flows back into the heat dissipation cavity (304) through the liquid inlet pipe (6), and enters the storage tank (7) through the liquid outlet (303). During this period, the cold water absorbs the heat generated by the battery pack (2) when passing through the water-cooling heat dissipation pipe (3); Step 2: When the water in the liquid inlet pipe (6) flows along the inner wall of the storage tank (7), it flows evenly into the heat dissipation cavity (304) through a plurality of connecting pipes (203) and is redirected by the evenly distributed guide plates (302). During this process, the water dissipates the absorbed heat. Step 3: After the water in the connecting pipe (203) enters the heat dissipation chamber (304), the heat dissipation chamber (304) and the storage tank (7) are in a cut-off state, and water continues to accumulate in the heat dissipation chamber (304) until the liquid level in the storage tank (7) drives the float (406) to squeeze the bottom of the trigger rod (403), causing the trigger rod (403) to drive the rotating ring (401) to rotate through the first block (404) and the inclined groove (405), thereby releasing the cut-off state between the heat dissipation chamber (304) and the storage tank (7). At this time, the water in the heat dissipation chamber (304) enters the storage tank (7); Step 4: After the water in the heat dissipation chamber (304) enters the storage tank (7), the water level in the storage tank (7) rises, and the float (406) moves upward to push the top of the trigger rod (403), so that the trigger rod (403) drives the rotating ring (401) to reset and rotate through the first block (404) and the inclined groove (405). The heat dissipation chamber (304) and the storage tank (7) are in a cut-off state. This cycle is repeated until the heat dissipation of the battery pack (2) stops, and the circulation pump (4) is turned off, so that the water in the water-cooled heat dissipation pipe (3) flows back into the storage tank (7).

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