Energy storage container cooling system

Abstract

The utility model discloses an energy storage container cooling system. The energy storage container cooling system comprises a container body, a battery pack, a spray header, a liquid accumulation pool and a liquid cooling unit, wherein the container body is provided with a hollow cavity; the tops and the bottoms of the battery packs are at least partially opened, and the plurality of battery packs are sequentially stacked in the cavity; each spraying head correspondingly faces the top opening part of each battery pack; the liquid accumulation pool is positioned below the battery pack; and the liquid cooling unit is communicated with the spray header and the liquid accumulation pool. According to the embodiment of the invention, the spray header is additionally arranged at the top of the battery pack, and the cooling medium is sprayed on each battery pack through the spray header to take away the heat of the battery, so that the heat dissipation efficiency is higher; at least part of the battery pack is open to facilitate passing of a cooling medium and improve the heat dissipation efficiency; and the cooling medium flows into the liquid accumulation pool and is cooled by the liquid cooling unit, so that repeated circulation is realized, the utilization rate of the cooling medium is improved, the performance and the service life of the battery are improved, and the safety risks of thermal runaway and thermal diffusion of the battery are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage battery technical field, concretely relates to a kind of energy storage container cooling system. BACKGROUND

[0002] A large amount of heat is generated in the process of rapid charging and discharging of the battery. If these heat is not dissipated in time, it will shorten the service life of the battery, and even cause thermal runaway and thermal diffusion of the battery. Therefore, the thermal management of the battery is the first problem to be considered in the design and use of the battery pack.

[0003] In the prior art, the battery thermal management technology mainly includes air cooling and liquid cooling. The air-cooled battery system on the market uses air conditioners and fans to maintain the temperature of the batteries in the container within a reasonable temperature. The air-cooled thermal management is limited in its application in new energy vehicles requiring rapid charging and discharging due to its insufficient heat dissipation capacity. The liquid cooling system uses a liquid cooling unit to control the temperature of the battery within a suitable temperature range through pipes, liquid cooling plates and cooling liquid. The liquid-cooled battery thermal management technology mainly includes indirect liquid cooling and immersion liquid cooling. The indirect liquid cooling is to pass the cooling liquid into the liquid cooling plate, and then indirectly cool the battery by the liquid cooling plate, which has the disadvantages of slow cooling and complex structure. The immersion liquid cooling needs to completely immerse the battery in the cooling liquid, which has the disadvantages of complex system, leakage risk, difficult maintenance and replacement, and high cost.

[0004] In summary, the existing battery thermal management technology has the technical problems of insufficient heat dissipation capacity, complex structure system, insufficient safety performance and inconvenient maintenance. UTILITY MODEL CONTENT

[0005] The purpose of the present application is to overcome the above technical deficiencies, and to provide an energy storage container cooling system to solve the technical problems of insufficient heat dissipation capacity, complex structure system, insufficient safety performance and inconvenient maintenance in the prior art.

[0006] To achieve the above technical purpose, the following technical solutions are adopted in the present application:

[0007] The present application provides an energy storage container cooling system, which comprises a container body, a battery pack, a spray head, a liquid pool and a liquid cooling unit:

[0008] The container body has a hollow cavity;

[0009] The battery pack is at least partially open at the top and bottom, and a plurality of battery packs are arranged in the cavity from bottom to top in sequence;

[0010] The spray head is directed to the top opening of each battery pack;

[0011] A liquid pool is arranged below the battery pack;

[0012] A liquid cooling unit is in communication with the spray head and the liquid pool.

[0013] In some embodiments of the present application, a plurality of the battery packs are arranged in multiple columns, and each column of the battery packs is stacked in sequence to form an array structure, and a plurality of the spray heads are arranged in an array to cover the top of each battery pack.

[0014] In some embodiments of the present application, a cooling pipeline is further included, which is in communication with the liquid cooling unit and the spray head, and in communication with the liquid pool and the liquid cooling unit.

[0015] In some embodiments of the present application, the cooling pipeline includes a main pipeline and a plurality of branch pipelines, the main pipeline extends from the liquid cooling unit to the spray head in the uppermost layer, and sequentially connects a plurality of the spray heads in the uppermost layer, each branch pipeline is in communication with the main pipeline, and sequentially connects a plurality of the spray heads in the same column.

[0016] In some embodiments of the present application, a plurality of high-pressure boxes are further included, each of which is arranged between a column of the battery packs and the liquid pool.

[0017] In some embodiments of the present application, the top of the battery pack is open, the bottom of the battery pack is provided with a through hole, and the spray head faces the top of the battery pack.

[0018] In some embodiments of the present application, the top of the battery pack is provided with a mesh plate, the bottom of the battery pack is provided with a mesh plate, and the spray head faces the top of the battery pack.

[0019] In some embodiments of the present application, the liquid pool includes a groove with an open top, and the orthographic projection of a plurality of the spray heads in the liquid pool is located in the groove of the liquid pool.

[0020] In some embodiments of the present application, the liquid cooling unit includes a power pump and a heat exchanger, the heat exchanger is in communication with the liquid pool, the liquid inlet of the power pump is in communication with the heat exchanger, and the liquid outlet of the power pump is in communication with the spray head.

[0021] In some embodiments of the present application, a plurality of sensors are further included, which are connected to or face the battery pack, and are in signal connection with the power pump, and the sensors include temperature sensors, deformation sensors, voltage sensors or smoke sensors.

[0022] Compared with the prior art, the technical scheme provided by the present application has the beneficial technical effects including:

[0023] The embodiment of the present application adds a spray head on the top of the battery pack, the insulation cooling medium is transmitted to the top of each battery pack after being cooled by the liquid cooling unit, and is sprayed on each battery pack by the spray head to take away the heat of the battery. Since the cooling medium directly contacts the battery pack, the heat dissipation efficiency is higher than that of indirect liquid cooling. The top and bottom of the battery pack are at least partially open, which facilitates the passage of the cooling medium and improves the heat dissipation efficiency. The cooling medium flows into the liquid pool at the bottom of the container, is cooled by the liquid cooling unit, and is repeatedly circulated, thereby improving the utilization rate of the cooling medium, improving the performance and service life of the battery, and reducing the safety risk of thermal runaway and thermal diffusion of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present application, the drawings needed in the embodiments will be briefly introduced as follows:

[0025] Figure 1 is a structural schematic diagram of a storage energy container cooling system provided by the embodiment of the present application.

[0026] Reference signs:

[0027] 1-container body, 2-battery pack, 3-spray head, 4-liquid pool, 5-liquid cooling unit, 6-high-pressure tank, 7-cooling pipeline, 71-main pipeline, 72-branch pipeline. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0029] Those skilled in the art can understand that, in the present specification, the expression "comprising" is an open-ended expression, which means that the feature exists but other features are not excluded. The terms "upper", "lower", "left", "right" and the like are the example directions based on the drawings. The features limited by "first" and "second" implicitly include one or more of the features. The singular form is also used for the plural form. The meaning of "a plurality of" is two or more. The terms "mounting", "connecting", "connecting" can be fixed connection, or detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. In addition, "connection" can include wireless connection.

[0030] The purpose of the present application is to overcome the above technical deficiencies, and to provide a storage energy container cooling system, which solves the technical problems of insufficient heat dissipation capacity, complex structure system, insufficient safety performance and inconvenient maintenance in the prior art.

[0031] To achieve the above technical purposes, the application adopts the following technical solutions:

[0032] The application provides a kind of energy storage container cooling system, as shown in Figure 1 , Figure 1 It is a kind of energy storage container cooling system structure schematic diagram provided by the embodiment of the application.

[0033] A kind of energy storage container cooling system, including container body 1, battery pack 2, spray head 3, liquid pool 4 and liquid cooling unit 5:

[0034] Container body 1, the container body 1 has hollow cavity;

[0035] Battery pack 2, the top and bottom of the battery pack 2 are at least partially open, and a plurality of battery packs 2 are sequentially and spaced apart in the cavity from bottom to top;

[0036] Spray head 3, each spray head 3 corresponds to the top opening of each battery pack 2;

[0037] Liquid pool 4, the liquid pool 4 is located below the battery pack 2;

[0038] Liquid cooling unit 5, the liquid cooling unit 5 is communicated with the spray head 3, the liquid pool 4.

[0039] The embodiment of the application adds spray head 3 on the top of battery pack 2, and the cooling medium is transmitted to the top of each battery pack 2 after being cooled by liquid cooling unit 5, and is sprayed on each battery pack 2 by spray head 3, and the battery heat is taken away, since the cooling medium is in direct contact with the battery pack 2, the heat dissipation efficiency is higher than that of indirect liquid cooling, the top and bottom of the battery pack 2 are at least partially open, on the one hand, the cooling medium can pass through, on the other hand, the heat dissipation efficiency can be improved, the cooling medium flows into the liquid pool 4 at the bottom of the container, and then is cooled by the liquid cooling unit 5, so as to be repeatedly circulated, the utilization rate of the cooling medium is improved, the battery performance and service life are improved, and the safety risk of battery thermal runaway and thermal diffusion is reduced. The cooling medium has insulation.

[0040] In some embodiments of the application, a plurality of battery packs 2 are arranged in multiple columns, and each column of battery packs 2 is sequentially stacked to form an array structure, and a plurality of spray heads 3 are arranged in an array to cover the top of each battery pack 2.

[0041] In this embodiment, each battery pack 2 corresponds to one spray head 3, and they are arranged in an array. Through layering and array arrangement, more battery units can be accommodated in a limited space, improving the space utilization rate inside the container. The array structure of the spray head 3 can ensure that each battery pack 2 is evenly cooled, reducing cooling dead angles and improving cooling efficiency. Since the spray head 3 directly covers above the battery pack 2, the cooling medium can quickly absorb the heat generated by the battery, improving the efficiency of the thermal management system. If a battery pack 2 fails, the array structure design helps to isolate the failure and prevent it from spreading to other battery packs 2.

[0042] In some embodiments of the present application, a cooling pipeline 7 is further included, which communicates the liquid cooling unit 5 with the spray head 3 and communicates the liquid pool 4 with the liquid cooling unit 5.

[0043] In some embodiments of the present application, the cooling pipeline 7 includes a main pipeline 71 and multiple branch pipelines 72. The main pipeline 71 extends from the liquid cooling unit 5 to the uppermost spray head 3, sequentially connecting multiple uppermost spray heads 3. Each branch pipeline 72 communicates with the main pipeline 71 and sequentially communicates multiple remaining spray heads 3 in the same column.

[0044] In this embodiment, by setting a main pipeline 71 and multiple branch pipelines 72, the pipeline layout of the entire cooling system can be simplified, making it clearer and easier to manage. The main pipeline 71 connects the uppermost spray head 3, while the branch pipeline 72 connects the remaining spray heads 3 in the same column, ensuring that the cooling medium can be evenly distributed to each spray head 3, thereby achieving uniform cooling. The hierarchical pipeline design helps to reduce the pressure loss of the fluid in the pipeline, improving the overall efficiency of the system. Since the cooling medium can quickly reach each spray head 3, the response speed of the system is improved, which can quickly respond to changes in battery temperature.

[0045] In some embodiments of the present application, multiple high-voltage boxes 6 are further included, each of which is located between a column of battery packs 2 and the liquid pool 4.

[0046] In this embodiment, the high-voltage box 6 usually contains components such as transformers and voltage regulators for converting the direct current high-voltage electricity generated by the battery pack 2 into alternating current suitable for power grid or load use, or for voltage adjustment. The high-voltage box 6 can contain power electronic devices for controlling power quality, such as filtering, voltage stabilization, harmonic suppression, etc., to ensure that the output power meets the grid standard.

[0047] In some embodiments of the present application, the top of the battery pack 2 is open, the bottom of the battery pack 2 is provided with a through hole, and the spray head 3 faces the top of the battery pack 2.

[0048] In the embodiment, the open top allows the spray head 3 to directly cool the battery, improving the cooling efficiency. The through hole at the bottom can facilitate the passage of the cooling medium into the next cycle.

[0049] Optionally, the cooling medium used in the embodiment is silicone oil, each battery pack 2 is cancelled, and the bottom of the battery pack 2 is not closed, and the liquid can flow smoothly to the liquid pool 4 at the bottom of the container.

[0050] In some embodiments of the application, the top of the battery pack 2 is provided with a mesh plate, the bottom of the battery pack 2 is provided with a mesh plate, and the spray head 3 is directed to the top of the battery pack 2.

[0051] In the embodiment, the mesh plate at the top and bottom of the battery pack 2 can prevent foreign matter from directly contacting the battery without interfering with the passage of the cooling medium, protecting the battery from physical damage. The mesh plate increases the structural stability of the battery pack 2, helping to withstand external forces and vibrations.

[0052] In some embodiments of the application, the liquid pool 4 includes a top-opened groove, and the orthographic projection of the plurality of spray heads 3 in the liquid pool 4 is located in the groove of the liquid pool 4.

[0053] In the embodiment, the liquid pool 4 can effectively collect the cooling medium sprayed by the spray head 3, and by increasing the liquid pool 4 at the bottom of the container, the cooling medium is prevented from flowing away, improving the overall reliability of the system.

[0054] In some embodiments of the application, the liquid cooling unit 5 includes a power pump and a heat exchanger, the heat exchanger is in communication with the liquid pool 4, the liquid inlet of the power pump is in communication with the heat exchanger, and the liquid outlet of the power pump is in communication with the spray head 3.

[0055] In some embodiments of the application, a plurality of sensors are further included, the sensors are connected to or directed to the battery pack 2, and are in signal connection with the power pump, the sensors include temperature sensors, deformation sensors, voltage sensors or smoke sensors.

[0056] In this embodiment, the combination of the power pump and the heat exchanger ensures efficient circulation of the cooling medium and rapid transfer of heat, improving thermal management efficiency. The communication design of the heat exchanger with the liquid pool 4, and the layout of the inlet and outlet of the power pump, provides stable and reliable cooling circulation. The sensors can monitor the temperature, deformation, voltage and other key parameters of the battery pack 2 in real time, ensuring safe operation of the system. The data provided by the sensors can help the power pump accurately adjust the flow and pressure of the cooling medium to meet the actual needs of the battery pack 2. Temperature sensors, deformation sensors, voltage sensors and smoke sensors can detect potential safety hazards such as overheating, battery damage or electrical failure in advance and take timely measures.

[0057] Compared with the prior art, the technical scheme provided by the present application has the beneficial technical effects including:

[0058] In the embodiment of the present application, the spray head 3 is added on the top of the battery pack 2, and the cooling medium is transmitted to the top of each battery pack 2 after being cooled by the liquid cooling unit 5, and is sprayed on each battery pack 2 by the spray head 3 to carry away the heat of the battery. Since the cooling medium is in direct contact with the battery pack 2, the heat dissipation efficiency is higher than that of indirect liquid cooling. The top and bottom of the battery pack 2 are at least partially open, on the one hand to facilitate the passage of the cooling medium, and on the other hand to improve the heat dissipation efficiency. The cooling medium flows into the liquid pool 4 at the bottom of the container, and is then cooled by the liquid cooling unit 5, thereby repeating the cycle, improving the utilization rate of the cooling medium, improving the performance and life of the battery, and reducing the safety risks of battery thermal runaway and heat diffusion.

[0059] Those skilled in the art in this technical field can understand that the steps, measures, schemes in the various operations, methods, processes discussed in the present application can be alternated, changed, rearranged, decomposed, combined or deleted.

[0060] The specific embodiments of the present application described above do not constitute a limitation on the scope of protection of the present application. Any various other corresponding changes and modifications made in accordance with the technical concept of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. An energy storage container cooling system, characterized by, The application relates to a container body with a hollow cavity, a plurality of battery packs with top and bottom openings, a plurality of spray heads corresponding to the top openings of the battery packs, a liquid pool under the battery packs, and a liquid cooling unit communicating with the spray heads and the liquid pool. The battery packs are arranged in multiple columns, and the battery packs in each column are stacked to form an array structure. The cooling pipeline comprises a main pipeline and a plurality of branch pipelines. The main pipeline extends from the liquid cooling unit to the uppermost spray head and is connected with the uppermost spray heads in series. The branch pipelines are connected with the main pipeline and are connected with the remaining spray heads in the same column in series. The application further comprises a plurality of high-pressure boxes between the battery packs and the liquid pool.

2. The energy storage container cooling system of claim 1, wherein, The top of the battery pack is open, and the bottom of the battery pack is provided with a through hole.

3. The energy storage container cooling system of claim 2, wherein, The top of the battery pack is provided with a mesh plate, and the bottom of the battery pack is provided with a mesh plate.

4. The energy storage container cooling system of claim 3, wherein, The liquid pool comprises a top opening groove, and the projection of the spray heads in the liquid pool is located in the groove.

5. The energy storage container cooling system of claim 2, wherein, The liquid cooling unit comprises a power pump and a heat exchanger.

6. The energy storage container cooling system of claim 1, wherein, The application further comprises a plurality of sensors connected with or facing the battery packs and connected with the power pump.

7. The energy storage container cooling system of claim 1, wherein, The sensors comprise temperature sensors, deformation sensors, voltage sensors or smoke sensors.

8. The energy storage container cooling system of claim 1, wherein, ​ 9. The energy storage container cooling system of claim 1, wherein, ​ 10. The energy storage container cooling system of claim 9, wherein, ​

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