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CN-224217546-U - Cooling device and energy storage equipment cooling system

CN224217546UCN 224217546 UCN224217546 UCN 224217546UCN-224217546-U

Abstract

The utility model belongs to the technical field of energy storage cooling, and particularly relates to a cooling device and an energy storage equipment cooling system, wherein the cooling device comprises a packaging shell and an internal cooling circulation system; the cooling circulation system comprises a liquid inlet system, a heat exchange system and a liquid outlet system, wherein the heat exchange system comprises a plurality of heat exchange units which are connected in parallel based on a split main pipe I and a converging main pipe I, a control box, a distribution box, a liquid supply interface and a liquid return interface are arranged on a packaging shell, an electric control system in the control box is connected with the cooling circulation system, and a power distribution system in the distribution box is connected with the electric control system and the cooling circulation system. The liquid return interface is connected with the split main pipe I through a liquid inlet pipeline of the liquid inlet system, and the converging main pipe I is connected with the liquid supply interface through a liquid outlet pipeline of the liquid outlet system. According to the technical scheme, the heat dissipation efficiency and the cost are solved through the liquid cooling and centralized layout, and the intelligent control and auxiliary system is assisted, so that the heat dissipation performance, the safety, the reliability and the economical efficiency of the energy storage cooling system are comprehensively improved.

Inventors

  • TAN JIANJUN
  • PENG YULIN
  • WEN JUN

Assignees

  • 东方电气自动控制工程有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (13)

  1. 1. The cooling device is characterized by comprising a packaging shell (71) and a cooling circulation system, wherein the cooling circulation system is arranged in the packaging shell (71) and comprises a liquid inlet system, a heat exchange system and a liquid outlet system, the heat exchange system comprises a plurality of heat exchange units which are connected in parallel based on a split main pipe I (36) and a confluence main pipe I (37), and a control box (73), a distribution box (74), a liquid supply interface (75) and a liquid return interface (76) are arranged on the packaging shell (71); The electric control system in the control box (73) is electrically connected with the cooling circulation system and used for controlling the cooling circulation system to run, and the power distribution system in the power distribution box (74) is electrically connected with the electric control system and the cooling circulation system respectively and used for providing working power supplies for the electric control system and the cooling circulation system; The liquid return interface (76) is connected with the diversion main pipe I (36) in a conducting way through a liquid inlet pipeline (1) of the liquid inlet system, a pressure detection device, a liquid temperature measurement device I (5), a pollution discharge degassing tank (6) and a liquid circulation driving unit are sequentially connected into the liquid inlet pipeline (1) along the flowing direction of an internal liquid medium, and two ends of the liquid circulation driving unit are connected with a deionization system in parallel; The confluence main pipe I (37) is connected with the liquid supply interface (75) in a conducting way through a liquid outlet pipeline (52) of the liquid outlet system, and the liquid outlet pipeline (52) is sequentially connected with the conductivity detection device (53), the liquid temperature measurement device II (72) and the outlet pressure detection device along the flowing direction of an internal liquid medium.
  2. 2. The cooling device of claim 1, wherein the deionization system comprises a plurality of deionization units which are connected in parallel, liquid inlet ends of all the deionization units are connected with a liquid outlet end of a liquid inlet pipeline (1) through a split main pipe II (22), a main throttle valve (23) is connected in the split main pipe II (22), liquid outlet ends of all the deionization units are connected with the liquid inlet pipeline (1) through a confluence main pipe II (26), the connection points are positioned between a pollution discharge and deionization tank (6) and a liquid circulation driving unit, and a filtering unit is connected in the confluence main pipe II (26).
  3. 3. A cooling device as claimed in claim 1, characterized in that the liquid circulation driving unit comprises a heating device (13) and a pump driving pipeline unit which are sequentially connected in series in the liquid inlet pipeline (1) along the flowing direction of the internal liquid medium, the pump driving pipeline unit comprises at least two pump driving branches which are connected in parallel, each single pump driving branch is sequentially connected in series with a liquid inlet side valve I (16), a liquid pump device (17), a check valve I (18) and a liquid outlet side valve I (19) along the flowing direction of the liquid medium, the liquid pump device (17) is connected with a pollution discharge degassing tank (6) based on a degassing pipeline (20), and a valve switch II (21) is connected in the degassing pipeline (20).
  4. 4. The cooling device according to claim 1, wherein the liquid inlet system is further connected with a system constant pressure device, the system constant pressure device comprises a constant pressure pipe (10) and a plurality of expansion tanks (11), the constant pressure pipe (10) is connected with the liquid inlet pipeline (1) in a conducting mode, the connection point is located between the pollution discharge degassing tank (6) and the liquid circulation driving unit, and all the expansion tanks (11) are connected into the constant pressure pipe (10) through valve switches I (12) in one-to-one correspondence.
  5. 5. The cooling device of claim 1, wherein the liquid inlet system is further provided with an exhaust system and a liquid discharge system, the exhaust system comprises a plurality of exhaust pipelines (7) which are respectively arranged at all exhaust nodes in the liquid inlet system, the exhaust pipelines (7) are connected with exhaust valves (9) through exhaust switches (8), the liquid discharge system comprises a plurality of liquid discharge pipelines (14) which are respectively arranged at all liquid discharge nodes in the liquid inlet system, and liquid discharge control valves are connected into the liquid discharge pipelines (14).
  6. 6. A cooling apparatus according to claim 1, wherein said heat exchange unit comprises an evaporator (40), an expansion valve (50) and a refrigeration cycle (41); The cold-carrying side of the evaporator (40) is provided with a liquid medium inlet connected with the split main pipe I (36) through a flow switch (38), and a liquid medium outlet connected with the converging main pipe I (37) through a valve switch III (39); A first needle valve (42), a low-pressure side pressure sensor (43), a compressor (44), a fan pressure controller (45), a condenser (46), a second needle valve (47), a dry filter II (48) and a solenoid valve I (49) are sequentially connected in series on the refrigerating side of the evaporator (40) from the refrigerant outlet end to the refrigerant inlet end based on a refrigerating circulation pipeline; An inlet port of the expansion valve (50) is connected with an outlet end of the electromagnetic valve I (49), an outlet port of the expansion valve (50) is connected with a refrigerant inlet end of the evaporator (40), a temperature sensing bulb port of the expansion valve (50) is connected with a temperature sensing bulb arranged at the refrigerant outlet end of the evaporator (40) through a capillary tube, and a balance tube port of the expansion valve (50) is connected between the evaporator (40) and the compressor (44) based on a refrigeration cycle pipeline.
  7. 7. A cooling device according to claim 1, wherein the heat exchange system further comprises a bypass pipe (32), one end of the bypass pipe (32) is connected to a connection path between the liquid inlet system and the heat exchange system, the other end of the bypass pipe (32) is connected to a connection path between the heat exchange system and the liquid outlet system, and a bypass throttle valve (33) is connected to the bypass pipe (32).
  8. 8. The cooling device according to claim 7, further comprising an air cooling system, wherein the air cooling system comprises a fan unit and a liquid-air heat exchange unit (34), a liquid pipeline in the liquid-air heat exchange unit (34) is connected to the bypass pipeline (32) in a conducting mode, the access point is located behind the bypass throttle valve (33) according to the liquid flowing direction, and the fan unit is arranged on one side of the liquid-air heat exchange unit (34) and used for accelerating air flowing around the liquid-air heat exchange unit (34).
  9. 9. The cooling device according to claim 1, further comprising a fluid supplementing system, wherein the fluid supplementing system comprises a liquid storage tank (58) and a fluid supplementing pipeline (62), and the fluid supplementing pipeline (62) is sequentially connected with a liquid driving pump (63), a filter III (64), an electromagnetic valve II (65) and a check valve II (66) in series along the flowing direction of the liquid; the liquid inlet end of the liquid-driving pump (63) is provided with a liquid supplementing/discharging port (68) through a valve switch IV (67), the liquid storage tank (58) is connected into a liquid supplementing pipeline (62) through the valve switch IV (67), and the access point is positioned between the liquid-driving pump (63) and the liquid supplementing/discharging port (68); The liquid outlet end of the check valve II (66) is provided with two liquid supplementing branch pipes (69), one liquid supplementing branch pipe (69) is connected with the liquid inlet pipeline (1) in a conducting way, the connecting point is positioned between the blowdown degassing tank (6) and the liquid circulation driving unit, the other liquid supplementing branch pipe (69) is connected with a connecting passage between the heat exchange system and the liquid outlet system, and the liquid supplementing branch pipe (69) is connected with an electromagnetic valve III (70).
  10. 10. A cooling device according to claim 1, wherein the enclosure (71) is provided with a lifting structure (81).
  11. 11. The cooling system for the energy storage equipment is characterized by comprising a heat dissipation pipeline unit (77) and a cooling device according to any one of claims 1-10, wherein the heat dissipation pipeline unit (77) is arranged according to the structure of the cooled energy storage equipment, the input end of the heat dissipation pipeline unit (77) is detachably and hermetically connected with a liquid supply interface (75) of the cooling device, and the output end of the heat dissipation pipeline unit (77) is detachably and hermetically connected with a liquid return interface (76) of the cooling device.
  12. 12. The cooling system of the energy storage device of claim 11, wherein the heat dissipation pipeline unit (77) comprises a liquid inlet main pipeline (82) and a liquid outlet main pipeline (83), the liquid outlet main pipeline (83) is located above the liquid inlet main pipeline (82), a plurality of first-stage liquid collecting branch pipes (84) are connected to the liquid inlet main pipeline (82) at intervals, a plurality of second-stage liquid collecting branch pipes (86) are connected to each first-stage liquid collecting branch pipe (84) at intervals, a plurality of first-stage liquid collecting branch pipes (85) which are in one-to-one correspondence with the first-stage liquid collecting branch pipes (84) are connected to the liquid outlet main pipeline (83) at intervals, and a plurality of second-stage liquid collecting branch pipes (87) which are in one-to-one correspondence with the second-stage liquid collecting branch pipes (86) are connected to each first-stage liquid collecting straight pipe at intervals.
  13. 13. The cooling system of an energy storage device according to claim 12, characterized in that an exhaust valve (9) is arranged in the main liquid outlet pipe (83).

Description

Cooling device and energy storage equipment cooling system Technical Field The utility model belongs to the technical field of energy storage cooling, and particularly relates to a cooling device and an energy storage equipment cooling system. Background Energy storage is an indispensable fourth link in a future power system, and the fundamental change of a power grid development mode is being promoted. With the continuous improvement of the electrochemical energy storage technology, the manufacturing cost and the maintenance cost of the electrochemical energy storage technology are continuously reduced, the capacity and the service life of the energy storage equipment are gradually improved, and the electrochemical energy storage technology is applied on a large scale, so that the electrochemical energy storage technology becomes a new development trend of the Chinese energy storage industry. Among various electrochemical energy storage technologies, lithium ion batteries are the most rapidly developed technology by virtue of the advantages of maximum project number ratio, maximum installed capacity ratio and the fastest growth amplitude. The technology starts from the new energy storage power generation industry, gradually extends to the energy power industry and even the whole power electronic industry. In the running process of the energy storage system, if the heat generated by the battery cannot be timely and effectively dissipated, the performance, the service life and the system safety of the battery are seriously affected. The prior art has a plurality of defects in the aspect of energy storage cooling. In the heat dissipation mode, an air cooling heat dissipation scheme is adopted, so that the heat dissipation efficiency is low, a large amount of heat generated by a battery is difficult to be taken away rapidly, and meanwhile, the temperature difference of the device is large, so that the balanced and stable operation of the battery pack is not facilitated. In the aspect of heat dissipation layout, the prior art adopts a distributed heat dissipation scheme, and a small amount of battery pack is provided with a set of cooling system, so that a plurality of low-power cooling systems are required to be used in the whole project, and further the problems of high cost, large volume, complex pipelines, complex control system, large temperature gradient and the like are generated. In the aspect of water supply temperature, the water supply temperature of the prior art scheme is higher, and the requirement of an energy storage system on low water supply temperature cannot be met. For example, battery pack often requires a water supply temperature of 18 ℃, which is difficult to achieve with existing solutions. In addition, with the application of the high-voltage cascading technology in the energy storage system, each module is high-voltage floating potential to the ground, and the voltage between three phases is also usually 6kV or above, which requires the cooling liquid and the pipeline to have high insulation property. However, the prior art solution does not have the requirement of high voltage suspension and isolation. In summary, the existing energy storage cooling technology has a plurality of defects, and it is difficult to meet the increasing performance, cost and safety requirements of the energy storage system. Disclosure of utility model The utility model aims to overcome the defects in the prior art, and provides a cooling device and an energy storage device cooling system, which are characterized in that a liquid cooling heat dissipation scheme, a centralized heat dissipation layout, a compressor and a condenser are integrated, and an innovative design with a high-voltage suspension isolation function is adopted, so that the problems in the prior art are effectively solved, and a reliable guarantee is provided for efficient and stable operation of an energy storage system. In order to achieve the above purpose, the utility model adopts the following technical scheme: The cooling device comprises an encapsulation shell and a cooling circulation system, wherein the cooling circulation system is arranged in the encapsulation shell and comprises a liquid inlet system, a heat exchange system and a liquid outlet system, the heat exchange system comprises a plurality of heat exchange units which are connected in parallel based on a split main pipe I and a confluence main pipe I, and a control box, a distribution box, a liquid supply interface and a liquid return interface are arranged on the encapsulation shell. And an electrical control system in the control box is electrically connected with the cooling circulation system and used for controlling the cooling circulation system to operate. And the power distribution system in the power distribution box is respectively and electrically connected with the electric control system and the cooling circulation system and is used for providing working po