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CN-224217548-U - Leak protection liquid device and liquid cooling system

CN224217548UCN 224217548 UCN224217548 UCN 224217548UCN-224217548-U

Abstract

The application discloses a liquid leakage prevention device and a liquid cooling system, and relates to the technical field of battery cooling, wherein the device comprises a heat dissipation structure, a first connector and a second connector, wherein the heat dissipation structure is used for communicating an internal liquid cooling space of the heat dissipation structure with a liquid cooler; the liquid cooling device comprises a liquid cooling machine, a first valve structure, a second valve structure and a second valve structure, wherein the first valve structure is arranged on a first connector and used for closing the first connector when the first connector is detached from a liquid outlet of the liquid cooling machine so as to prevent liquid in an internal liquid cooling space from leaking from the first connector, and the second valve structure is arranged on a second connector and used for closing the second connector when the second connector is detached from a liquid return port of the liquid cooling machine so as to prevent liquid in the internal liquid cooling space from leaking from the second connector. According to the application, the valve structure is arranged at the joint of the heat radiation structure connected with the liquid cooling machine, so that the effect of preventing liquid in the heat radiation structure from leaking when the liquid cooling machine is disassembled is realized, and the safety and convenience of equipment maintenance are improved.

Inventors

  • LIU KEJIN
  • MU ZHEN
  • WANG RUIXIANG
  • LIU SHIYU

Assignees

  • 惠州亿纬锂能股份有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (10)

  1. 1. A liquid leakage prevention device, characterized by comprising: The heat dissipation structure comprises a first connector and a second connector, wherein the first connector is used for communicating an internal liquid cooling space of the heat dissipation structure with the liquid cooling machine, the first connector is used for being connected with a liquid outlet of the liquid cooling machine, and the second connector is used for being connected with a liquid return port of the liquid cooling machine; The first valve structure is arranged on the first connector and is used for closing the first connector when the first connector is detached from a liquid outlet of the liquid cooler so as to prevent liquid in the internal liquid cooling space from leaking from the first connector; the second valve structure is arranged on the second connector and is used for closing the second connector when the second connector is detached from a liquid return port of the liquid cooler, so that liquid in the internal liquid cooling space is prevented from leaking from the second connector.
  2. 2. The liquid leakage prevention apparatus of claim 1, wherein said first valve structure comprises at least one-way valve that allows liquid to flow only through said first connector to said heat dissipating structure.
  3. 3. The liquid leakage prevention apparatus according to claim 1, wherein said first valve structure comprises at least one bi-directional valve, And/or the second valve structure comprises at least one bi-directional valve.
  4. 4. The leak protection apparatus of claim 3 wherein the bi-directional valve is a motor-driven ball valve.
  5. 5. The liquid leakage prevention device of claim 1, wherein the first valve structure comprises: the first valve body is provided with a first outer flow passage; The first valve core is provided with a first inner flow passage, and when the first valve core is in an open state, the first outer flow passage is communicated with the first inner flow passage; And the sealing structure is arranged on the outer peripheral surface of the first valve core and is used for sealing a gap between the first inner flow channel and the first outer flow channel when the first valve core is in a closed state.
  6. 6. The liquid leakage prevention device of claim 1, wherein the second valve structure comprises: the second valve body is provided with a second outer flow passage; the second valve core is provided with a second inner flow passage, and when the second valve core is in an open state, the second outer flow passage is communicated with the second inner flow passage; And the sealing structure is used for sealing a gap between the second inner flow passage and the second outer flow passage when the second valve core is in a closed state.
  7. 7. A liquid cooling system comprising a liquid cooler and the liquid leakage preventing device according to any one of claims 1 to 6.
  8. 8. The liquid cooling system of claim 7, wherein the first valve structure comprises at least one check valve; the liquid cooling system further comprises an air pump, wherein the air pump is connected in series between a liquid outlet of the liquid cooling machine and the first connector and is used for purging cooling liquid in a pipeline of the liquid cooling system back to a liquid return port of the liquid cooling machine.
  9. 9. The liquid cooling system according to claim 7, wherein a filtering device is further disposed on a connection line between the liquid leakage preventing device and the liquid cooling machine, and the filtering device is used for filtering impurities in the cooling liquid.
  10. 10. The liquid cooling system of claim 7, further comprising a drive module connected in series between the liquid outlet of the liquid cooler and the first connector for driving a cooling liquid to flow in a pipeline.

Description

Leak protection liquid device and liquid cooling system Technical Field The application relates to the technical field of battery cooling, in particular to a liquid leakage preventing device and a liquid cooling system. Background With the continuous increase of power density of electronic equipment and high-power components, the heat generated by equipment operation is increased, and the traditional air cooling heat dissipation mode cannot effectively meet the heat dissipation requirement of the high-heat-flux components, so that the liquid cooling (water cooling) heat dissipation technology gradually becomes the main trend in the field of electronic equipment heat dissipation. In the actual operation and maintenance process of the liquid cooling system, particularly in the shutdown, purging, cleaning or maintenance shutdown stage of equipment, the cooling liquid in the liquid cooling system often has the risks of backflow, backflow and leakage caused by pressure difference, gravity action or sealing performance reduction. The backflow or leakage not only can cause a large amount of liquid in the liquid cooling plate to remain, so that the subsequent equipment maintenance is affected, but also can cause potential safety hazards such as damp and short circuit of equipment components and parts, and the reliability and the service life of the equipment are seriously reduced. In the battery cooling process, a liquid pipeline between a liquid cooler and a load to be cooled in the prior art is not provided with an effective one-way check structure or an active stop device, so that in the equipment shutdown or purging cleaning process, the cooling liquid flows back and leaks due to the condition of pressure difference in the pipeline or ageing failure of a sealing ring, so that residual liquid in the liquid cooling plate cannot be thoroughly removed, even damage or safety accidents of the equipment are caused, and meanwhile, the prior art lacks measures for actively cutting off the pipeline, the backflow and overflow of the cooling liquid are easy to occur during shutdown or maintenance, the system maintenance difficulty and cost are increased, and the stability and safety of the operation of a liquid cooling system are seriously influenced. The above information disclosed in this background section is only included to enhance understanding of the background of the disclosure and thus may contain information that does not form a related art that is already presently known to those of ordinary skill in the art. Disclosure of utility model The application provides a liquid leakage preventing device, which is used for solving the problem of liquid backflow leakage of a liquid cooling system during disassembly and maintenance. The application adopts the following technical scheme: In a first aspect, the present application provides a liquid leakage prevention device comprising: The heat radiation structure comprises a first connector and a second connector, wherein the first connector is used for communicating an internal liquid cooling space of the heat radiation structure with the liquid cooling machine, the first connector is used for being connected with a liquid outlet of the liquid cooling machine, and the second connector is used for being connected with a liquid return port of the liquid cooling machine; The first valve structure is arranged on the first connector and is used for closing the first connector when the first connector is detached from a liquid outlet of the liquid cooler so as to prevent liquid in the internal liquid cooling space from leaking from the first connector; The second valve structure is arranged at the second joint and used for closing the second joint when the second joint is detached from the liquid return port of the liquid cooler so as to avoid leakage of liquid in the internal liquid cooling space from the second joint. According to the application, the valve structures are respectively arranged at the first joint and the second joint of the heat radiation structure, and when the heat radiation structure is disconnected from the liquid cooling machine, the valve structures can close the corresponding joint passages, so that the liquid in the liquid cooling space inside the heat radiation structure is effectively prevented from leaking from the joints, and the equipment damage or potential safety hazard caused by the liquid leakage is effectively prevented. With reference to the first aspect, in an alternative implementation manner, the first valve structure includes at least one-way valve that only allows the liquid to flow to the heat dissipating structure through the first joint. The one-way valve can automatically realize unidirectional liquid flow, when the first connector is connected with the liquid cooler, the one-way valve can be automatically opened under the action of liquid pressure to allow liquid to normally flow, and when the first connector is detached from a liqu