Pack-free immersed energy storage system

Abstract

The utility model discloses a pack-free immersed energy storage system, and relates to the technical field of energy storage equipment. The device comprises a support, a cluster container and battery modules, the cluster container is of a sealed structure, the cluster container is arranged in the support and is fixedly connected through bolts, a plurality of mounting laminates are arranged in the cluster container, the battery modules are arranged in a plurality of groups and are fixed on the mounting laminates, the cluster container is filled with fluorinated liquid, and the fluorinated liquid is filled in the cluster container. A plurality of groups of battery modules are placed in the sealed cluster container, the energy ratio of energy storage unit volume is improved, the cluster container is filled with fluorinated liquid to perform immersed cooling and fire protection on batteries, the safety is improved, the fluorinated liquid is circularly cooled by using the cooling system, cold and heat in the cluster container are uniform, and the service life of the batteries is prolonged. Therefore, the normal work of the battery is effectively ensured, and the service life of the battery is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pack-free immersion type energy storage systems, and it is related to energy storage equipment technical field. BACKGROUND

[0002] In energy storage equipment, cooling electrochemical energy storage usually needs to combine 13 batteries into a module, and then 4 modules are combined into an integrated package with management to realize air cooling or liquid cooling to ensure the normal charge and discharge of battery.

[0003] The air cooling scheme is usually configured as a ventilation fan, and the cooling effect of the battery is directly proportional to the distance from the wind surface, which can cause uneven cooling of the battery, and long-term operation can cause a large temperature difference between the farthest end and the nearest end, which can cause non-technical shutdown, directly affecting the charge and discharge efficiency of the battery, thereby affecting profitability and battery life.

[0004] At the same time, the energy storage system needs to be equipped with a fire extinguishing system, and the existing ground fire sprinkler system covers an area with nozzles as points, and the sprinkling effect is not comprehensive, and the execution effect is general. SUMMARY

[0005] The utility model aims at the defects or deficiencies in the prior art, and provides a pack-free immersion type energy storage system, which places multiple battery modules in a sealed cluster container, improves the energy ratio per unit volume of energy storage, and fills the cluster container with fluorinated liquid for immersion cooling and fire protection of the battery, thereby improving safety and using a cooling system to circulate the fluorinated liquid, and the cluster container is uniformly cooled, thereby effectively ensuring the normal operation of the battery and greatly prolonging the service life of the battery.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: it comprises a support 1, a cluster container 2 and a battery module 3, the cluster container 2 is of a sealed structure, the cluster container 2 is arranged in the support 1 and fixed by bolts, and an inner frame is arranged in the cluster container 2, a plurality of installation plates are arranged on the inner frame, the battery module 3 is arranged in a plurality of groups and fixed on the installation plates, and fluorinated liquid is filled in the cluster container 2.

[0007] Further, the support 1 is further provided with a refrigerator 4, the refrigerator 4 is provided with a liquid inlet pipe 8 connected with the cluster container 2, and extends from the top of the cluster container 2 to the inside of the cluster container 2.

[0008] Further, the cluster container 2 is provided with a high-voltage box 5 below.

[0009] Further, the refrigerator 4 is further provided with a liquid return pipe 7 connected with the cluster container 2, and extends from the bottom of the cluster container 2.

[0010] Further, the support 1 is provided with a control box 10, the control box 10 is located above the refrigerator 4, and the control box 10 is electrically connected with the battery module 3, the refrigerator 4 and the high-voltage box 5.

[0011] Further, the cluster container 2 is provided with a wire tube 9, the wire tube 9 includes two wire tubes of positive and negative poles and a BMS circuit, one end of the wire tube 9 is connected with the high-voltage box 5 and then connected with the control box 10, and a plurality of connecting branch tubes are arranged on the wire tube 9 and connected with the battery module 3 through quick connectors.

[0012] Further, the support 1 is provided with a control box 10, the control box 10 is located above the refrigerator 4, and the control box 10 is electrically connected with the battery module 3, the refrigerator 4 and the high-voltage box 5.

[0013] Further, the refrigerator 4 is integrally provided with a cooling system, a circulating pump and a circulating valve.

[0014] Further, the refrigerator 4 is integrally provided with a cooling system, a circulating pump and a circulating valve.

[0015] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: the sealed cluster container is used to place a plurality of battery modules, thereby improving the energy ratio of the energy storage unit per unit volume, the cluster container is filled with fluorinated liquid to immerse and cool the battery and provide fire protection, thereby improving the safety, and the cooling system is used to circulate and cool the fluorinated liquid, the temperature in the cluster container is uniform, thereby effectively ensuring the normal operation of the battery and greatly prolonging the service life of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a structural schematic view of the present application;

[0018] Figure 2 is a second angle view of Figure 1

[0019] Figure 3 is a third angle view of Figure 1

[0020] Figure 4 is a structural schematic view of the support 1 in the present application;

[0021] ​​Figure 5 is a structural schematic view of the refrigerator 4 in the utility model.

[0022] Mark explanation: support 1, cluster container 2, battery module 3, refrigerator 4, high voltage box 5, base 6, liquid return pipe 7, liquid inlet pipe 8, wire pipe 9, control box 10, top cover 11, first connector 41, second connector 42. DETAILED DESCRIPTION

[0023] Referring to Figures 1-5 The technical scheme adopted in the embodiment is as follows: it comprises a support 1, a cluster container 2 and a battery module 3, the cluster container 2 is of a sealed structure, is arranged in the support 1 and is fixed by a bolt connection, and an inner frame is arranged in the cluster container 2, a plurality of installation layer plates are arranged on the inner frame, the battery module 3 is arranged in a plurality of groups and is fixed on the installation layer plates, and fluorinated liquid is filled in the cluster container 2.In this embodiment, the traditional integrated pack structure is cancelled, a plurality of energy storage batteries are formed into a single battery module, each group of battery modules is fixed on the installation layer plates of the cluster container, the single battery module structure is convenient for transportation and installation, is convenient for maintenance or replacement of the battery module, can reduce the working strength and improve the working efficiency of the energy storage system.

[0024] Meanwhile, the overall volume is effectively reduced after the battery module structure is adopted.Taking 280Ah / 314Ah battery cells as an example, 13 strings of batteries are taken as one group in a single battery module, four groups are taken as one single battery module, the size is 1033*765*266 (length / width / height, mm), and the overall volume is 210205170 mm 3 While the battery module with the traditional Pack structure also has 52 strings of batteries, the size is 1182*860*292 (length / width / height, mm), and the volume is 296823840 mm 3 Therefore, the energy ratio per unit volume of the energy storage can be effectively improved after the battery module structure is adopted.

[0025] After the battery module is installed, fluorinated liquid is filled in the cluster container.It can be understood that a sealing cover is arranged at the top of the cluster container.The traditional energy storage system adopts air cooling or liquid cooling system to manage the heat of the batteries, but the heat exchange area is limited and the heat exchange efficiency is not high.In this embodiment, the battery module is completely immersed in the fluorinated liquid for heat management, the battery module contacts the fluorinated liquid on six surfaces, the heat exchange area is greatly improved, the heat exchange efficiency is effectively improved, the heat management efficiency is improved, in addition, the traditional energy storage system has the risk of fire, but in this embodiment, the battery module is immersed in the fluorinated liquid, the fluorinated liquid is insulating and non-flammable, so the risk of fire is eliminated, and there is no need to equip a fire extinguishing system, which greatly improves the use safety of the energy storage system.Because the fire extinguishing system is no longer needed, the structure of the energy storage system is simpler, the volume is smaller, and the production and maintenance costs are reduced.

[0026] More specifically, the support 1 is also provided with a freezer 4, the freezer 4 is provided with a liquid inlet pipe 8 connected with the cluster container 2 and extending from the top of the cluster container 2 to the inside of the cluster container 2, and the freezer 4 is integrally provided with a cooling system, a circulating pump and a circulating valve. In order to better manage the heat of the energy storage system, the freezer is also provided as the cooling system in this embodiment, which can extract the fluorinated liquid in the cluster container for cooling and circulation, so that the fluorinated liquid remains in a flowing state and is cooled in the freezer, thereby faster removing the heat generated by the battery module during operation, improving the heat exchange speed and the heat management efficiency.

[0027] More specifically, the support 1 is also provided with a freezer 4, the freezer 4 is provided with a liquid inlet pipe 8 connected with the cluster container 2 and extending from the top of the cluster container 2 to the inside of the cluster container 2, and the freezer 4 is integrally provided with a cooling system, a circulating pump and a circulating valve. In order to better manage the heat of the energy storage system, the freezer is also provided as the cooling system in this embodiment, which can extract the fluorinated liquid in the cluster container for cooling and circulation, so that the fluorinated liquid remains in a flowing state and is cooled in the freezer, thereby faster removing the heat generated by the battery module during operation, improving the heat exchange speed and the heat management efficiency.

[0028] More specifically, the freezer 4 is also provided with a liquid return pipe 7 connected with the cluster container 2 and extending from the bottom of the cluster container 2. When the freezer is started, the liquid return pipe 7 can effectively extract the fluorinated liquid for circulation. The fluorinated liquid enters the liquid return pipe 7 and then circulates back to the cluster container 2 through the liquid inlet pipe 8, thereby promoting the circulation of the fluorinated liquid in the cluster container 2 and forming a complete cooling circulation system. In one embodiment, the liquid return pipe is provided with a manual stop valve at the bottom of the cluster container 2, which is used for manual control in special cases.

[0029] More specifically, the support 1 is also provided with a freezer 4, the freezer 4 is provided with a liquid inlet pipe 8 connected with the cluster container 2 and extending from the top of the cluster container 2 to the inside of the cluster container 2, and the freezer 4 is integrally provided with a cooling system, a circulating pump and a circulating valve. In order to better manage the heat of the energy storage system, the freezer is also provided as the cooling system in this embodiment, which can extract the fluorinated liquid in the cluster container for cooling and circulation, so that the fluorinated liquid remains in a flowing state and is cooled in the freezer, thereby faster removing the heat generated by the battery module during operation, improving the heat exchange speed and the heat management efficiency.

[0030] More specifically, the cluster container 2 is provided with a wire pipe 9 including two positive and negative wire pipes and a BMS circuit. One end of the wire pipe 9 is connected with the high-voltage box 5 and then connected with the control box 10. The wire pipe 9 is provided with a plurality of connection branch pipes connected with the battery module 3 through quick couplings. In this embodiment, the wire pipe structure is provided for electrical connection with the battery module, which facilitates the connection and installation of the wires.

[0031] More specifically, the support 1 is also provided with a freezer 4, the freezer 4 is provided with a liquid inlet pipe 8 connected with the cluster container 2 and extending from the top of the cluster container 2 to the inside of the cluster container 2, and the freezer 4 is integrally provided with a cooling system, a circulating pump and a circulating valve. In order to better manage the heat of the energy storage system, the freezer is also provided as the cooling system in this embodiment, which can extract the fluorinated liquid in the cluster container for cooling and circulation, so that the fluorinated liquid remains in a flowing state and is cooled in the freezer, thereby faster removing the heat generated by the battery module during operation, improving the heat exchange speed and the heat management efficiency.

[0032] More specifically, the freezer 4 is provided with a first connector 41 and a second connector 42 connected with the liquid return pipe 7 and the liquid inlet pipe 8, respectively.

[0033] The utility model discloses a working principle: the cluster container 2 is provided with the inner frame, and the outer part sets up the sealing plate, and a plurality of installation floorboards are set up on the inner frame, and a plurality of battery module 3 are installed on the installation floorboard, to form a sealed structure, through the quick connector on the connecting branch pipe and realize the quick connection with battery module 3, realize plug and play, the quick installation of energy storage system is convenient, after the connection of battery module 3 is completed, can start perfusion fluoridating liquid, after fluoridating liquid perfusion is completed, cover the sealing cover of cluster container 2 and the top cover 11 on support 1, complete the assembly of energy storage system, in the equipment use process, through control box 10 control management to each battery module 3, start refrigerator 4 simultaneously, extract fluoridating liquid in cluster container 2 and carry out circulation cooling, because battery module 3 is completely immersed in fluoridating liquid, and the heat exchange area is bigger, and the overall heat is uniform, thereby effectively prolongs the service life of battery module 3, and will not happen the fire situation, thereby greatly improved the use safety of energy storage system, and because of adopting the immersion cooling mode, the overall volume of energy storage system is smaller.

[0034] The above, only to explain the technical scheme of the utility model but not limit, the other modification or equivalent replacement of the technical scheme of the utility model of the ordinary skill in the art to the utility model, as long as not departing from the spirit and scope of the utility model technical scheme, should be covered in the utility model claim range.

Claims

1. A packless submerged energy storage system characterized by: It includes support (1), cluster container (2), battery module (3), cluster container (2) is sealed structure, cluster container (2) is arranged in support (1) and is fixed by bolt connection, and the inner frame is arranged in cluster container (2), a plurality of installation layer boards are arranged on the inner frame, the battery module (3) is arranged and fixed on the installation layer board, and the cluster container (2) is filled with fluorinated liquid.

2. A packless immersed energy storage system according to claim 1, wherein: The support (1) is further provided with a refrigerator (4), the refrigerator (4) is provided with a liquid inlet pipe (8) connected with the cluster container (2) and extending from the top of the cluster container (2) to the inside of the cluster container (2).

3. A packless immersed energy storage system according to claim 1, wherein: The cluster container (2) is provided with a high-voltage box (5) below.

4. A packless immersed energy storage system according to claim 2, wherein: The refrigerator (4) is further provided with a liquid return pipe (7) connected with the cluster container (2), and the liquid return pipe (7) extends from the bottom of the cluster container (2) into the cluster container (2).

5. A packless immersed energy storage system according to claim 2, wherein: The support (1) is further provided with a control box (10), the control box (10) is located above the refrigerator (4), and the control box (10) is electrically connected with the battery module (3), the refrigerator (4) and the high-voltage box (5).

6. A packless immersed energy storage system according to claim 1, wherein: The cluster container (2) is provided with a wire pipe (9), the wire pipe (9) includes two wire pipes of positive and negative poles and a BMS circuit, one end of the wire pipe (9) is connected with the high-voltage box (5) and then connected with the control box (10), a plurality of connection branch pipes are arranged on the wire pipe (9), and quick connectors are arranged on the connection branch pipes and connected with the battery module (3).

7. A packless immersed energy storage system according to claim 1, wherein: The top of the support (1) is provided with a top cover (11), and the bottom of the support (1) is provided with a base (6).

8. A packless immersed energy storage system according to claim 2, wherein: The refrigerator (4) is integrally provided with a cooling system, a circulating pump and a circulating valve.

9. A packless immersed energy storage system according to claim 2, wherein: The top of the refrigerator (4) is provided with a first connector (41) and a second connector (42), and the first connector (41) and the second connector (42) are connected with the liquid return pipe (7) and the liquid inlet pipe (8) respectively.

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