Cooling liquid direct injection cooling device

Abstract

The utility model discloses a cooling device, and particularly relates to a cooling liquid direct injection cooling device which comprises a container, a part to be cooled is arranged in the container, a spraying head is further arranged in the container and connected to a circulating pipeline, and a liquid collecting box is arranged at the bottom of the container. According to the technical route, the surface of each battery and the surface of the corresponding power device are in direct contact with the cooling medium, meanwhile, due to the fact that the used cooling medium is a special non-conductive and non-combustible cooling medium, heat generated by the batteries and the corresponding power devices can be taken away in time, rapidly and efficiently, and meanwhile, the service life of the batteries and the power devices is prolonged. Due to the fact that the physical property of the adopted medium is non-conductive and non-combustible, the thermal runaway accident that a battery or a power device is burnt due to some reasons in the using process of an energy storage cooling system in the existing industry is fundamentally eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation equipment, in particular to a cooling liquid direct injection temperature reduction device. Background Art

[0002] Energy storage systems use lithium batteries and other devices to convert electrical energy into chemical energy, storing it and releasing it on demand. They are primarily used in new energy and distributed power generation systems. Currently, containerized energy storage systems are primarily categorized into two types: air-cooled integrated energy storage systems and liquid-cooled integrated energy storage systems. Liquid-cooled integrated energy storage systems are further divided into separate module-based liquid-cooled plate-type integrated systems and immersion-type integrated systems.

[0003] Air-cooled integrated energy storage systems have limited cooling capacity and a low heat transfer coefficient. This creates a significant ceiling effect for battery heat dissipation, making them suitable only for low-power applications. Air-cooled systems can result in large temperature differences between components, leading to inconsistent performance and making regulation difficult. This also reduces component lifespan. Furthermore, air-cooled systems require significant air volume, increasing fan speed and power, significantly increasing noise and energy consumption, and significantly impacting the site and surrounding environment. Furthermore, air-cooled systems require specialized air ducts, which take up space.

[0004] The installation layout of a standalone module-based liquid-cooled plate integrated system involves simply stacking and arranging the battery, air conditioning and thermostat, fire protection system, environmental testing system, and security and lighting system. These systems are physically large and have low unit volume utilization, resulting in wasted resources and increased investment costs for the energy storage system. Furthermore, if a leak in the piping or liquid-cooled plate is discovered in time, it can cause system downtime and impact normal operation. If not discovered in time, it can cause the battery or power device temperatures to rise, potentially leading to safety incidents.

[0005] Compared with air-cooled integrated energy storage systems and liquid-cooled plate integrated systems with separate modules, the submerged integrated energy storage system has high heat dissipation efficiency and certain advantages, but it places extremely high requirements on the sealing of the energy storage box. At the same time, the cooling medium used must ensure that all batteries are completely immersed, so the cooling medium consumption is huge, which also causes waste of resources and increases the investment cost of the energy storage system. In addition, because the energy storage box is filled with a large amount of cooling medium, it is not conducive to the transportation, installation and filling of the energy storage box, nor is it conducive to the subsequent maintenance and inspection of the energy storage system. For example, during regular maintenance of components such as the control module, wiring harness and battery inside the box, all cooling medium needs to be recovered, which is extremely inefficient.

[0006] Therefore, how to solve the problems of large size, low volume utilization, and waste of resources and costs caused by container-type energy storage systems in the existing technology has become an important technical problem that those skilled in the art need to solve. Utility Model Content

[0007] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a cooling liquid direct injection temperature reduction device to solve the current technical problems.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] The utility model provides a cooling liquid direct spraying device, comprising: a container, wherein components to be cooled are arranged in the container, a spray head is also arranged in the container, the spray head is connected to a circulation pipeline, and a liquid collecting tank is arranged at the bottom of the container.

[0010] Preferably, the bottom of the liquid collecting tank is provided with a support bracket, and a liquid addition and drainage interface is installed at the bottom end of the side of the liquid collecting tank.

[0011] Preferably, the sprinkler heads are evenly distributed on the top and sides of the container.

[0012] Preferably, the circulation pipeline is connected with a circulation pump, a heat exchanger and a refrigeration unit.

[0013] Preferably, a fan for blowing air into the heat exchanger is provided on the side of the heat exchanger.

[0014] Preferably, the liquid collecting tank is connected to a filter pipeline, and the filter pipeline is connected to the circulation pipeline.

[0015] Preferably, the liquid in the liquid collecting tank flows in the following order: starting from the liquid collecting tank, passing through the filter pipeline, the circulation pump, the heat exchanger and the condensing unit in sequence, and finally being sprayed out through the spray head.

[0016] The beneficial effects of the utility model are:

[0017] The technical route described in this application realizes that the surface of each battery and the corresponding power device is in direct contact with the cooling medium. At the same time, because the cooling medium used is a dedicated non-conductive and non-flammable cooling medium, the heat generated by the battery and the corresponding power device can be removed in a timely, rapid and efficient manner. At the same time, precisely because the physical properties of the medium used are non-conductive and non-flammable, it fundamentally eliminates the occurrence of thermal runaway accidents in the existing industry that may eventually lead to fire and combustion of batteries or power devices due to certain reasons during the use of energy storage cooling systems.

[0018] The technical route described in this application is not limited by the ambient temperature and can be used normally and well. At the same time, for energy-intensive areas and other areas where fires are extremely prone to occur, the drainage port installed on the outside of the liquid collecting tank can also be used to achieve manual shutdown and then assist in emergency fire fighting at nearby fire points through external pipelines.

[0019] The technical solution described in this application does not require all components such as batteries to be immersed in the water as in the immersion type. It only needs to ensure that the surface area of ​​the battery and the corresponding power device is fully covered with the cooling medium. The overall medium capacity used is less than one-fifth of the entire container body, and the cooling medium cost is relatively low. At the same time, because this solution does not require the entire container body to ensure absolute sealing, it is not dependent on the sealing process of the container body, thereby simplifying the sealing process of the container body and reducing the production cost of the container. In addition, the liquid collecting box at the bottom of the container described in this application is designed as an independent load-bearing structure, which can be customized for the existing container body, thereby achieving compatible transformation and low upgrade cost. In addition, during the use of the solution described in this application, if regular maintenance is required, it is only necessary to stop the circulation function of the cooling system. The container body door can be opened to enter the interior for corresponding maintenance without the need to recover the coolant separately.

[0020] The technical solution described in this application adopts a high heat conduction system for the cooling medium, and at the same time adopts a shielded centrifugal pump with a large flow control range. After comprehensive use, better heat dissipation effect can be achieved; at the same time, this technology realizes the direct injection of cooling medium onto the surface of batteries and power devices, realizing zero-distance contact heat dissipation, and ultimately ensuring that the heat dissipation performance reaches the best. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the main structure of the coolant direct injection cooling device according to an embodiment of the present utility model;

[0023] Figure 2 It is a schematic top view of the structure of the coolant direct injection cooling device according to an embodiment of the present utility model.

[0024] Description of Reference Numerals

[0025] exist Figure 1-Figure 2 Among them, the liquid collecting tank 1; the refrigeration unit 2; the heat exchanger 3; the circulation pipeline 4; the sprinkler head 5; the circulation pipeline connecting joint 6; the filter pipeline 7; the liquid filling and draining interface 8; the container 9; and the equipment cabinet 10. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The utility model provides a cooling device for direct spraying of coolant, comprising an energy storage container, which is a container 9 for placing components such as batteries to be cooled. A liquid collecting tank 1 is added to the bottom of the container 9. The liquid collecting tank 1 is a metal box with a cooling medium inside. A special non-conductive and non-flammable cooling medium is used for direct spray covering heat dissipation for heat dissipation of the battery. This technology installs a circulating pump, a liquid circulation pipeline 4, a heat exchanger 3, a fan and a refrigeration unit 2 on the outside of the liquid collecting tank 1. The heat exchanger 3 is used for the initial cooling of the cooling medium, and the refrigeration unit 2 is used for secondary cooling. Spray heads 5 are evenly distributed on the top layer and the surrounding sides of the container 9. During normal use, the entire liquid cooling system circulates, and the low-temperature cooling medium is poured onto the surface of the battery and the corresponding power devices through the spray heads 5 evenly distributed on the top layer and sides of the container 9, and the heat generated by the battery and the corresponding power devices is promptly, quickly and efficiently adsorbed and transferred. Under the action of gravity, it converges into the liquid collection tank 1 at the bottom of the container 9, and is driven by the circulation pump to converge into the heat exchanger 3. The heat exchanger 3 effectively dissipates the high-temperature cooling medium with heat inside under the forced cooling of the fan and then outputs the low-temperature cooling medium. The low-temperature cooling medium output here is again input into the liquid collection tank 1 through the circulation pipeline 4, and finally circulated and cooled through the spray heads 5 evenly distributed on the top layer and sides of the container 9. At the same time, if the container 9 is used in a high-temperature environment, the refrigeration unit 2 installed in the system of the utility model can automatically operate in combination with the electronic control monitoring feedback signal to perform low-temperature heat exchange on the high-temperature cooling medium, ensuring that the temperature of the cooling medium input into the collecting tank 1 meets the usage requirements. In the low-temperature environment, the refrigeration unit 2 is also combined with the electronic control monitoring feedback signal to limit operation in order to save energy consumption of the entire container 9.

[0028] The bottom of the liquid collection tank 1 features a support bracket, facilitating forklift transport and installation during turnover. Inside, a filtering liquid circulation pipeline, referred to as a filter line 7, is installed. This filter line 7 is a conduit 13 with a filter element or screen inside, connected to a circulating pump. A liquid filling and drain port 8, mounted on the bottom side of the liquid collection tank 1, is used to fill and drain the system's cooling medium. This also serves as an emergency firefighting solution in energy-intensive areas, such as those prone to fires. This approach primarily allows for emergency firefighting near nearby fire points, allowing for manual shutdown of the system, through an external pipeline.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coolant direct injection cooling device, comprising: The container is characterized in that: components to be cooled are arranged in the container, a sprinkler head is also arranged in the container, the sprinkler head is connected to the circulation pipeline, and a liquid collecting tank is arranged at the bottom of the container.

2. The coolant direct injection cooling device according to claim 1, characterized in that: The bottom of the liquid collecting box is provided with a supporting bracket, and the bottom end of the side of the liquid collecting box is provided with a liquid adding and draining interface.

3. The coolant direct injection cooling device according to claim 2, characterized in that: The spray heads are evenly distributed on the top and sides of the container.

4. The coolant direct injection cooling device according to claim 2, characterized in that: The circulation pipeline is connected with a circulation pump, a heat exchanger and a refrigeration unit.

5. The coolant direct injection cooling device according to claim 4, characterized in that: A fan for blowing air into the heat exchanger is provided on the side of the heat exchanger.

6. The coolant direct injection cooling device according to claim 2, characterized in that: The liquid collecting box is connected with a filter pipeline, and the filter pipeline is connected to the circulation pipeline.

7. The coolant direct injection cooling device according to claim 2, characterized in that: The flow order of the liquid in the liquid collecting tank is: starting from the liquid collecting tank, passing through the filter pipeline, the circulation pump, the heat exchanger and the condensing unit in sequence, and finally being sprayed out through the spray head.

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