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CN-224232726-U - Liquid cooling system equipped with high-low compatible water tank

CN224232726UCN 224232726 UCN224232726 UCN 224232726UCN-224232726-U

Abstract

The utility model provides a liquid cooling system with a high-low compatible water tank, which relates to the technical field of energy storage liquid cooling systems and comprises a main circulation pipeline and a water tank, wherein the main circulation pipeline is sequentially connected with an electromagnetic valve, a one-way valve and a water pump from liquid inlet to liquid outlet, the main circulation pipeline is also connected with a pressure sensor, a liquid injection branch is connected between the one-way valve and the water pump on the main circulation pipeline, the water tank branch is connected between the electromagnetic valve and the one-way valve on the main circulation pipeline, the bottom of the water tank is provided with a breather valve which is communicated with the water tank branch and the inner cavity of the water tank, the top of the water tank is communicated with the atmosphere, and cooling liquid in the water tank is injected into the main circulation pipeline or discharged into the water tank under the action of the breather valve. The utility model has the advantages that the water tank in the system can realize maintenance-free, does not need to be aerated regularly, is not limited by position, has very flexible structural layout, and can realize automatic liquid supplementing under the cooperation of the electromagnetic valve and the water tank.

Inventors

  • Ni Anye
  • SU HU
  • Zhai Enting
  • LI LEI
  • WANG BO
  • CHEN FASHENG

Assignees

  • 钧能(宁波)电源科技有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. A liquid cooling system with a high-low compatible water tank is characterized by comprising a main circulation pipeline (2) and a water tank (3), wherein an electromagnetic valve (21), a one-way valve (22) and a water pump (23) are sequentially connected to the main circulation pipeline (2) from liquid inlet to liquid outlet, a pressure sensor (28) is further connected to the main circulation pipeline (2), the pressure sensor (28) is used for detecting the pressure value of cooling liquid in the main circulation pipeline (2) in real time and controlling the opening and closing of the electromagnetic valve (21) through the pressure value, a liquid injection branch (4) is connected to the main circulation pipeline (2) between the one-way valve (22) and the water pump (23), a water tank branch (5) is connected to the main circulation pipeline (2) between the electromagnetic valve (21) and the one-way valve (22), the water tank branch (5) is communicated with the water tank (3), a breathing valve (31) is arranged at the bottom of the water tank (3) and is communicated with the inner cavity (30), and the top of the water tank (3) is communicated with the atmosphere, so that the cooling liquid in the water tank (3) can be injected into the main circulation pipeline (2) or discharged into the water tank (3).
  2. 2. The liquid cooling system equipped with the high-low compatible type water tank according to claim 1, characterized in that a scale (32) for measuring the liquid level is provided in the water tank (3).
  3. 3. The liquid cooling system equipped with the high-low compatible type water tank according to claim 1, characterized in that the bottom of the water tank (3) is also provided with a liquid level switch (33), and when the liquid level is low to a certain lower limit value, the liquid level switch (33) is triggered to alarm.
  4. 4. The liquid cooling system with the high-low compatible water tank according to claim 1, wherein a top cover (34) is detachably connected to the top of the water tank (3), and a communication hole (35) communicated with the atmosphere is formed in the bottom of the top cover (34).
  5. 5. The liquid cooling system equipped with the high-low compatible type water tank according to claim 1, characterized in that a drain ball valve (36) for draining the cooling liquid is provided at a lower portion of the water tank (3).
  6. 6. The liquid cooling system equipped with the high-low compatible type water tank according to claim 1, characterized in that an overflow port (37) for preventing the coolant from overflowing the top is provided at the upper portion of the water tank (3).
  7. 7. The liquid cooling system with the high-low compatible water tank according to claim 1, wherein a liquid inlet temperature sensor (26) is arranged at the liquid inlet end of the main circulation pipeline (2), and a liquid outlet temperature sensor (27) is arranged at the liquid outlet end of the main circulation pipeline (2).
  8. 8. The liquid cooling system with the high-low compatible water tank according to claim 1, wherein the liquid injection branch (4) is provided with a liquid injection ball valve (41) for controlling the opening and closing of the liquid injection branch (4).
  9. 9. The liquid cooling system with the high-low compatible water tank is characterized by further comprising an energy storage battery module (1), wherein the liquid outlet end of the energy storage battery module (1) is connected with the liquid inlet end of the main circulation pipeline (2), the liquid inlet end of the energy storage battery module (1) is connected with the liquid outlet end of the main circulation pipeline (2), a plurality of groups of vertically arranged energy storage battery packs of the energy storage battery module (1) are formed, and each layer of energy storage battery pack is provided with a liquid cooling plate.
  10. 10. The liquid cooling system with the high-low compatible water tank according to claim 9, wherein a plate heat exchange unit (24) is further connected to the main circulation pipeline (2) and located at the liquid outlet end side of the water pump (23), a refrigeration circulation branch (6) is further connected to the plate heat exchange unit (24), and the plate heat exchange unit (24) is used as a bridge between the main circulation pipeline (2) and the refrigeration circulation branch (6) and is used for transferring cold in the refrigeration circulation branch (6) to the main circulation pipeline (2).

Description

Liquid cooling system equipped with high-low compatible water tank Technical Field The utility model relates to the technical field of energy storage liquid cooling systems, in particular to a liquid cooling system with a high-low compatible water tank. Background The energy storage battery can emit a large amount of heat in the charge and discharge process, and the temperature of the battery can continuously rise along with heat accumulation, so that a matched thermal management system is needed for avoiding thermal failure or thermal runaway of the battery, and the temperature of the battery is ensured to be in a proper range. The cold plate type liquid cooling is the most widely used energy storage heat pipe understanding solution at present, and the cold plate type liquid cooling system consists of a liquid cooling unit, an external pipeline and a liquid cooling plate, wherein the liquid cooling unit is a core unit of the whole liquid cooling system. The cooling liquid in the liquid cooling system can generate heat expansion and cold contraction phenomena when the temperature changes, and a buffer pressure stabilizing unit is required to be arranged in the liquid cooling unit in order to ensure that the main circulation loop of the liquid cooling system is always filled with the cooling liquid and the system pressure is stable. The buffer pressure stabilizing unit of the existing energy storage liquid cooling unit mainly comprises two major types, namely an air bag type expansion tank which is mainly applicable to a closed system, and has the advantages of flexible arrangement, no limitation of placement positions, capability of being placed at a high position of the system and at a low position of the system, but the disadvantage of needing to periodically add air into a tank body of the expansion tank, difficulty in grasping the air adding amount, and difficulty in industry pain point because the air adding amount is different in different environment temperatures and different liquid cooling system states, and the expansion tank is easy to lose efficacy if the air adding period or the air adding amount is not proper, so that the operation and maintenance difficulty is high, and the operation and maintenance cost is high. The other is a high-level water tank or an expansion water tank, which is mainly applicable to an open system or a semi-open system. The high-level water tank or the expansion water tank has the advantages that the high-level water tank or the expansion water tank is communicated with the atmosphere, the automatic regulation and compensation of the pressure can be realized, the regular air filling maintenance is not needed, but the high-level water tank or the expansion water tank has the defects that the high-level water tank or the expansion water tank must be placed at the high level of the system, the air pressure in the water tank is easily influenced by the ambient temperature because the existing water tank is provided with a breather valve or a waterproof air-permeable valve at the top of the water tank, when the air pressure in the water tank is reduced to the atmospheric pressure, the liquid higher than the water tank in the liquid cooling system flows to the water tank, the main circulation loop of the liquid cooling system is not full of liquid, the cooling efficiency and the system reliability are influenced, and the structural layout of the liquid cooling unit is limited in many ways. And along with the long-time operation of the liquid cooling system, residual air in the system can be gradually exhausted, and in addition, cooling liquid can be dissipated to a certain extent along with the time, so that liquid supplementing is needed to be carried out in the liquid cooling system, and the main circulation loop of the system is always in a liquid-full state. Most of the liquid cooling units at present do not have the automatic liquid supplementing function, operation and maintenance personnel are required to carry out liquid supplementing operation on site by taking the liquid supplementing device, the operation and maintenance cost is high and the operation and maintenance are not very convenient, or the liquid supplementing pump and the liquid supplementing box which are independent are arranged inside part of the liquid cooling units so that the liquid cooling units have the automatic liquid supplementing function, but the scheme can greatly increase the cost of the liquid cooling units and has lower market accommodation. Disclosure of utility model The utility model aims to solve the technical problems that the maintenance cost of the existing liquid cooling system is high in an air bag type expansion tank mode, regular air filling maintenance is needed, automatic liquid filling cannot be realized, the water tank is not needed to be placed at a high point of the system in a high-level water tank mode, the installation layout is limited, the water tank can be placed a