Immersed cooling thermal runaway management system and energy storage system

Abstract

The utility model relates to the technical field of energy storage systems, in particular to an immersed cooling thermal runaway management system and an energy storage system.The immersed cooling thermal runaway management system comprises a main circulation system, a main liquid inlet valve, a main liquid outlet valve, an auxiliary circulation system, an auxiliary liquid inlet valve, an auxiliary liquid outlet valve and a battery pack; the battery pack is provided with a main liquid inlet valve and a main liquid outlet valve, a liquid inlet of the battery pack is communicated with an outlet of the main circulating system through the main liquid inlet valve, and a liquid outlet of the battery pack is communicated with an inlet of the main circulating system through the main liquid outlet valve; liquid inlets of the battery packs are communicated with an outlet of the auxiliary circulating system through auxiliary liquid inlet valves, and liquid outlets of the battery packs are communicated with an inlet of the auxiliary circulating system through auxiliary liquid outlet valves. Therefore, by switching the cooling liquid circulation system, the out-of-control battery pack is completely isolated from the normal battery pack, so that the loss caused by thermal runaway of the battery cell is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to an immersion cooling thermal runaway management system and an energy storage system. Background Art

[0002] In current energy storage systems, as product energy density increases, safety issues have received widespread attention. The mainstream energy storage system heat dissipation method is air cooling or liquid cooling, which controls the battery cell temperature within a safe operating range, and then responds to the problem of large-scale and rapid heat dissipation when the battery cell thermal runaway occurs by adding insulation materials and setting up a fire protection system.

[0003] In order to further improve the cooling effect, an immersion heat dissipation method has been developed. That is, the original liquid cooling plate is cancelled, so that the battery cell is in direct contact with the coolant, and the coolant is equipped with an air conditioner and a radiator to achieve the cooling function. However, it is currently necessary to consider if the cooling solution is applied to an energy storage system with multiple battery packs. When a single or several battery packs experience thermal runaway, how to ensure that the battery pack with thermal runaway and the normal battery pack can be cooled separately without affecting each other. Utility Model Content

[0004] The purpose of the present application is to provide an immersion cooling thermal runaway management system and energy storage system, which to a certain extent solves the technical problem existing in the prior art of applying an immersion cooling solution to an energy storage system with multiple battery packs. When a single or several battery packs experience thermal runaway, how to ensure that the battery packs with thermal runaway and the normal battery packs can be cooled separately without affecting each other.

[0005] The present application provides an immersion cooling thermal runaway management system, comprising: a main circulation system, a main liquid inlet valve, a main liquid outlet valve, an auxiliary circulation system, an auxiliary liquid inlet valve, an auxiliary liquid outlet valve, and a plurality of battery packs; wherein any of the battery packs is equipped with a main liquid inlet valve and a main liquid outlet valve, and the liquid inlet of any of the battery packs is connected to the outlet of the main circulation system through the corresponding main liquid inlet valve, and the liquid outlet of any of the battery packs is connected to the inlet of the main circulation system through the corresponding main liquid outlet valve;

[0006] The liquid inlet of any battery pack is connected to the outlet of the auxiliary circulation system through the auxiliary liquid inlet valve, and the liquid outlet of any battery pack is connected to the inlet of the auxiliary circulation system through the auxiliary liquid outlet valve.

[0007] In the above technical solution, further, the main circulation system includes a first coolant buffer tank, a first refrigeration device and a first cooling pump;

[0008] Wherein, the liquid inlet of any of the battery packs is connected to the outlet of the first coolant buffer tank via the corresponding main liquid inlet valve, the first cooling pump, the first refrigeration device in sequence;

[0009] The liquid outlet of any of the battery packs is connected to the inlet end of the first coolant buffer tank via the corresponding main liquid outlet valve.

[0010] In any of the above technical solutions, further, the main circulation system also includes a main filter, and the main filter is arranged between the inlet end of the first coolant buffer tank and the liquid outlet of any of the battery packs.

[0011] In any of the above technical solutions, further, the auxiliary circulation system also includes a total input pipeline, a branch input pipeline, a branch output pipeline and a total output pipeline; wherein the liquid inlet of any of the battery packs is respectively connected to one of the branch input pipelines, and any of the branch input pipelines is provided with the main liquid inlet valve;

[0012] Any of the branch input pipelines is connected to the main input pipeline, and is connected to the first cooling pump via the main input pipeline; the liquid outlet of any of the battery packs is respectively connected to one of the branch output pipelines, and the liquid outlet valve is provided on any of the branch output pipelines; any of the branch output pipelines is connected to the main output pipeline, and is connected to the inlet end of the first coolant buffer tank via the main output pipeline.

[0013] In any of the above technical solutions, further, the auxiliary circulation system includes a second coolant buffer tank, a second refrigeration device and a second cooling pump;

[0014] Among them, the liquid inlet of any battery pack is connected to the outlet end of the second coolant buffer tank via the auxiliary liquid inlet valve, the second cooling pump, and the second refrigeration device in sequence; the liquid outlet of any battery pack is connected to the inlet end of the second coolant buffer tank via the auxiliary liquid outlet valve.

[0015] In any of the above technical solutions, further, the auxiliary circulation system also includes an auxiliary filter, and the auxiliary filter is arranged between the inlet end of the second coolant buffer tank and the liquid outlet of any of the battery packs.

[0016] In any of the above technical solutions, further, the auxiliary circulation system also includes a total auxiliary input pipeline, a sub-auxiliary input pipeline, a sub-auxiliary output pipeline and a total auxiliary output pipeline;

[0017] Wherein, the liquid inlet of any of the battery packs is respectively connected to one of the sub-auxiliary input pipelines; any of the sub-auxiliary input pipelines is connected to the main auxiliary input pipeline, and is connected to the second cooling pump via the main auxiliary input pipeline;

[0018] The liquid outlet of any of the battery packs is respectively connected to one of the sub-auxiliary output pipelines, and any of the sub-auxiliary output pipelines is connected to the total auxiliary output pipeline, and is in turn connected to the inlet end of the second coolant buffer tank via the total auxiliary output pipeline and the auxiliary liquid outlet valve.

[0019] In any of the above technical solutions, further, the auxiliary circulation system is connected to the main circulation system, and a liquid injection valve is provided on the pipeline connecting the two, so that the liquid of the auxiliary circulation system flows into the main circulation system to add coolant to the auxiliary circulation system.

[0020] In any of the above technical solutions, further, the immersion cooling thermal runaway management system also includes a controller, and the controller is respectively communicatively connected with the main circulation system, the main liquid inlet valve, the main liquid outlet valve, the auxiliary circulation system, the auxiliary liquid inlet valve, the auxiliary circulation system and the plurality of battery packs.

[0021] The present application also provides an energy storage system, including the immersion cooling thermal runaway management system described in any of the above technical solutions, and thus has all the beneficial technical effects of the immersion cooling thermal runaway management system, which will not be repeated here.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The present application proposes an immersion cooling thermal runaway management system. When thermal runaway of a battery cell occurs in a single battery pack, the coolant circulation system is switched to isolate the runaway battery pack and keep the coolant in the runaway battery pack running continuously to take away the heat generated by the thermal runaway. At the same time, the electrolyte, components, etc. that flow into the coolant in the runaway battery pack are prevented from being brought into other normally working battery packs, thereby maximizing the functional integrity of other normal battery packs, reducing the cost of replacing the battery pack and purifying the coolant at a later stage, and thereby greatly reducing the losses caused by thermal runaway of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of an immersion cooling thermal runaway management system provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the structure of the immersion cooling thermal runaway management system provided in an embodiment of the present application switching to the main circulation system;

[0027] Figure 3 A schematic diagram of the structure of the immersion cooling thermal runaway management system provided in an embodiment of the present application switching to an auxiliary circulation system.

[0028] Reference numerals:

[0029] 1-main circulation system, 11-first coolant buffer tank, 12-first refrigeration device, 13-first cooling pump, 14-main filter, 15-main input pipeline, 16-sub-input pipeline, 17-sub-output pipeline, 18-main output pipeline, 2-main liquid inlet valve, 3-main liquid outlet valve, 4-auxiliary circulation system, 41-second coolant buffer tank, 42-second refrigeration device, 43-second cooling pump, 44-auxiliary filter, 45-main auxiliary input pipeline, 46-sub-auxiliary input pipeline, 47-sub-auxiliary output pipeline, 48-main auxiliary output pipeline, 5-auxiliary liquid inlet valve, 6-auxiliary liquid outlet valve, 7-liquid injection valve, 8-battery pack, 9-controller. DETAILED DESCRIPTION

[0030] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0031] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0032] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Refer to the following Figures 1 to 3 An immersion cooling thermal runaway management system and an energy storage system according to some embodiments of the present application are described.

[0036] Embodiment 1

[0037] See also Figures 1 to 3 As shown, an embodiment of the present application provides an immersion cooling thermal runaway management system, comprising: a main circulation system 1, a main liquid inlet valve 2, a main liquid outlet valve 3, an auxiliary circulation system 4, an auxiliary liquid inlet valve 5, an auxiliary liquid outlet valve 6, and a plurality of battery packs 8;

[0038] Among them, any battery pack 8 is equipped with a main liquid inlet valve 2 and a main liquid outlet valve 3, and the liquid inlet of any battery pack 8 is connected to the outlet of the main circulation system 1 through the corresponding main liquid inlet valve 2, and the liquid outlet of any battery pack 8 is connected to the inlet of the main circulation system 1 through the corresponding main liquid outlet valve 3;

[0039] The liquid inlet of any battery pack 8 is connected to the outlet of the auxiliary circulation system 4 through the auxiliary liquid inlet valve 5 , and the liquid outlet of any battery pack 8 is connected to the inlet of the auxiliary circulation system 4 through the auxiliary liquid outlet valve 6 .

[0040] According to the structure described above, when thermal runaway occurs in one of the battery packs 8, all the battery packs 8 are first powered off immediately, and then the main liquid inlet valve 2 and the main liquid outlet valve 3 of the thermal runaway battery pack are closed, that is, the connection between the main circulation system 1 and the thermal runaway battery pack is disconnected, and the connection between the main circulation system 1 and other normal battery packs 8 is maintained to cool the normal battery packs 8, and the auxiliary circulation system 4, the auxiliary liquid inlet valve 5 and the auxiliary liquid outlet valve 6 are opened to achieve the connection between the auxiliary circulation system 4 and the thermal runaway battery pack, and the thermal runaway battery pack is cooled separately by the auxiliary circulation system 4 until the thermal runaway reaction ends and the battery temperature stabilizes to the ambient temperature.

[0041] It can be seen that the present application independently controls the battery pack 8 where the thermal runaway battery cell is located through a switching operation, and during the switching process, the coolant in other normal battery packs 8 does not mix with the coolant that has passed through the thermal runaway battery pack, thereby maximizing the protection of the functionality of other normal battery packs 8 and reducing the cost of replacing the battery pack 8 and purifying the coolant in the later stage. In other words, on the basis of satisfying the normal temperature control function of the immersion cooling system, when a battery cell in the battery pack 8 has thermal runaway, it quickly switches to the operating state of the thermal runaway management system, and works in coordination with the fire protection system equipped with the battery pack 8 to ensure system safety. In addition, the present system can partially realize the functions of the fire protection system and reduce the investment cost and scale of the fire protection system.

[0042] In this embodiment, preferably, Figure 1 and Figure 2 As shown, the main circulation system 1 includes a first coolant buffer tank 11, a first refrigeration device 12 and a first cooling pump 13;

[0043] The liquid inlet of any battery pack 8 is connected to the outlet of the first coolant buffer tank 11 via the corresponding main liquid inlet valve 2, the first cooling pump 13, the first refrigeration device 12 in sequence;

[0044] The liquid outlet of any battery pack 8 is connected to the inlet end of the first coolant buffer tank 11 via the corresponding main liquid outlet valve 3 .

[0045] According to the structure described above, it can be known that, driven by the first cooling pump 13, the coolant in the first coolant buffer tank 11 flows through the first refrigeration device 12, the first cooling pump 13 and the main liquid inlet valve 2 in sequence, and then flows into the liquid inlet of the corresponding battery pack 8, thereby playing a cooling role. Moreover, the coolant flowing out of the battery pack 8 finally returns to the first coolant buffer tank 11 through the corresponding main liquid outlet valve 3. The above process is repeated in a cycle, thereby realizing the function of circulating cooling of the battery pack 8.

[0046] In this embodiment, preferably, Figure 1 and Figure 2As shown, the main circulation system 1 further includes a main filter 14 , and the main filter 14 is arranged between the inlet end of the first coolant buffer tank 11 and the liquid outlet of any battery pack 8 .

[0047] According to the structure described above, the main filter 14 can filter out impurities in the coolant flowing out of the battery pack 8, thereby ensuring the cleanliness of the coolant, and further effectively preventing impurities from accumulating in the first coolant buffer tank 11, and preventing impurities from accumulating in the battery pack 8, which would reduce the safety of the battery pack 8.

[0048] In this embodiment, preferably, Figure 1 and Figure 2 As shown, the auxiliary circulation system 4 also includes a total input pipeline 15, a branch input pipeline 16, a branch output pipeline 17 and a total output pipeline 18; wherein, the liquid inlet of any battery pack 8 is respectively connected to a branch input pipeline 16, and any branch input pipeline 16 is provided with a main liquid inlet valve 2;

[0049] Any branch input pipeline 16 is connected to the main input pipeline 15, and is connected to the first cooling pump 13 via the main input pipeline 15; the liquid outlet of any battery pack 8 is respectively connected to a branch output pipeline 17, and a liquid outlet valve is provided on any branch output pipeline 17; any branch output pipeline 17 is connected to the main output pipeline 18, and is connected to the inlet end of the first coolant buffer tank 11 via the main output pipeline 18.

[0050] According to the structure described above, the structure in which the branch pipelines and the main pipelines are matched can ensure that each battery pack 8 is connected to the main circulation system 1, and make the pipeline layout reasonable and regular, occupying less space, with fewer pipelines and lower costs.

[0051] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the auxiliary circulation system 4 includes a second coolant buffer tank 41, a second refrigeration device 42 and a second cooling pump 43;

[0052] Among them, the liquid inlet of any battery pack 8 is connected to the outlet end of the second coolant buffer tank 41 via the auxiliary liquid inlet valve 5, the second cooling pump 43, and the second refrigeration device 42 in sequence; the liquid outlet of any battery pack 8 is connected to the inlet end of the second coolant buffer tank 41 via the auxiliary liquid outlet valve 6. It can be seen that any battery pack 8 shares a system consisting of a set of auxiliary liquid inlet valves 5, the second cooling pump 43, the second refrigeration device 42, the second coolant buffer tank 41 and the auxiliary liquid outlet valve 6.

[0053] According to the structure described above, it can be known that, driven by the second cooling pump 43, the coolant in the second coolant buffer tank 41 flows through the second refrigeration device 42, the second cooling pump 43 and the auxiliary liquid inlet valve 5 in sequence, and then flows into the liquid inlet of the corresponding battery pack 8, thereby playing a cooling role, and the coolant flowing out of the battery pack 8 finally returns to the second coolant buffer tank 41 through the corresponding auxiliary liquid outlet valve 6, thereby realizing the function of circulating cooling of the battery pack 8.

[0054] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the auxiliary circulation system 4 further includes an auxiliary filter 44 , and the auxiliary filter 44 is disposed between the inlet end of the second coolant buffer tank 41 and the liquid outlet of any battery pack 8 .

[0055] According to the structure described above, the auxiliary filter 44 can filter out impurities in the coolant flowing out of the battery pack 8, thereby ensuring the cleanliness of the coolant, and further effectively preventing impurities from accumulating in the second coolant buffer tank 41, and preventing impurities from accumulating in the battery pack 8, which would reduce the safety of the battery pack 8.

[0056] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the auxiliary circulation system 4 further includes a total auxiliary input pipeline 45, a sub-auxiliary input pipeline 46, a sub-auxiliary output pipeline 47 and a total auxiliary output pipeline 48;

[0057] The liquid inlet of any battery pack 8 is respectively connected to a sub-auxiliary input pipeline 46 , and any sub-auxiliary input pipeline 46 is connected to the main auxiliary input pipeline 45 , and is connected to the second cooling pump 43 via the main auxiliary input pipeline 45 ;

[0058] The liquid outlet of any battery pack 8 is respectively connected to a sub-auxiliary output pipeline 47, and any sub-auxiliary output pipeline 47 is connected to the main auxiliary output pipeline 48, and is in turn connected to the inlet end of the second coolant buffer tank 41 via the main auxiliary output pipeline 48 and the auxiliary liquid outlet valve 6.

[0059] According to the structure described above, the structure in which the branch pipelines and the main pipelines are matched can ensure that each battery pack 8 is connected to the main circulation system 1, and make the pipeline layout reasonable and regular, occupying less space, with fewer pipelines and lower costs.

[0060] Further, preferably, the auxiliary input pipeline 46 overlaps with part of the structure of the input pipeline 16, that is, the two share a part of the pipeline; the auxiliary output pipeline 47 overlaps with part of the output pipeline 17, that is, the two share a part of the pipeline.

[0061] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the auxiliary circulation system 4 is connected to the main circulation system 1, and a filling valve 7 is provided on the pipeline connecting the two, that is, the filling pipeline, so that the liquid of the auxiliary circulation system 4 flows into the filling of the main circulation system 1 to fill the auxiliary circulation system 4 with coolant.

[0062] According to the structure described above, before using the auxiliary circulation system 4 to cool the thermal runaway battery pack alone, after disconnecting the connection between the main circulation system 1 and the thermal runaway battery pack, before opening the connection between the auxiliary circulation system 4 and the thermal runaway battery pack, open the injection valve 7 to introduce the coolant in the main circulation system 1 into the second coolant buffer tank 41 of the auxiliary system. When the liquid level in the second coolant buffer tank 41 reaches the set value, close the aforementioned injection valve 7, stop adding liquid to the second coolant buffer tank 41, and allow the auxiliary injection system to be connected to the thermal runaway battery pack to cool the thermal runaway battery pack alone.

[0063] Further, preferably, the inlet end of the filling pipeline is connected to the pipeline connected between the first refrigeration device 12 and the first cooling pump 13. Of course, not limited to this, the inlet end of the filling pipeline can also be connected to the pipeline in front of the first refrigeration device 12, or the inlet end of the filling pipeline can be connected to the total auxiliary input pipeline 45, or the inlet end of the filling pipeline can be connected to the total auxiliary output pipeline 48, or it can be directly connected to the first coolant buffer tank 11 through a pipeline alone, or it can be directly connected to the total liquid storage tank in the energy storage system, or the second coolant buffer tank 41 has a built-in coolant, so there is no need to add electrolyte to it.

[0064] It should be noted that the corresponding components in the above system are connected through pipelines, which is a more conventional setting and will not be described in detail here.

[0065] In this embodiment, preferably, Figures 1 to 3 As shown, the immersion cooling thermal runaway management system also includes a controller 9, and the controller 9 is respectively communicatively connected with the main circulation system 1, the main liquid inlet valve 2, the main liquid outlet valve 3, the auxiliary circulation system 4, the auxiliary liquid inlet valve 5, the auxiliary circulation system 4 and multiple battery packs 8.

[0066] According to the structure described above, the controller 9 can be used to realize automatic control of the above system and valve, which is simple and convenient to operate. Moreover, the controller 9 with the above function is common in the prior art. For example, the controller 9 is Siemens 1515F-2PN.

[0067] In this embodiment, preferably, Figure 1As shown, each battery pack 8 is equipped with a main liquid inlet valve 2 and a main liquid outlet valve 3. Of course, this is not limited to this. The number of main liquid inlet valves 2 equipped with each battery pack 8 can be two, and the number of main liquid outlet valves 3 can also be two.

[0068] In this embodiment, preferably, Figure 1 As shown, all battery packs 8 are commonly equipped with, i.e. share, an auxiliary liquid inlet valve 5 and an auxiliary liquid outlet valve 6. Of course, this is not limited to this. The number of auxiliary liquid inlet valves 5 commonly equipped with, i.e. share, can be two, and the number of auxiliary liquid outlet valves 6 can also be two.

[0069] In summary, the detailed working process of the immersion cooling thermal runaway management system provided in this embodiment is as follows:

[0070] Thermal runaway of the cells in the battery pack 8 is detected, and all cells are immediately powered off;

[0071] The main liquid inlet valve 2 and the main liquid outlet valve 3 of the thermal runaway battery pack are disconnected, the auxiliary liquid inlet valve 5 and the auxiliary liquid outlet valve 6 are closed, and the filling valve is opened. At this time, the liquid in the main circulation system 1 flows into the auxiliary circulation system 4, and the auxiliary circulation system 4 is filled with coolant. At this time, the main circulation system 1 and other normal battery packs 8 are kept in a connected state, so that the coolant still circulates in other normal battery packs 8 for cooling;

[0072] Check the temperature of the cells in other normal battery packs 8. When the monitored value is lower than the set value and it is confirmed that all cells are powered off, disconnect the liquid inlet valve and liquid outlet valve of other normal battery packs 8, that is, the main circulation system 1 and other normal battery packs 8 are disconnected, and the coolant in the main circulation system 1 is no longer in circulation. At this time, the auxiliary circulation system 4 is still in the state of adding coolant;

[0073] When the liquid level in the second coolant buffer tank 41 reaches the set value, the auxiliary liquid inlet valve 5 is opened, and the auxiliary circulation system 4 introduces coolant into the thermal runaway battery pack;

[0074] The coolant circulates continuously in the auxiliary circulation system 4 and works together with the fire protection system to ensure the safety of the energy storage system until the thermal runaway reaction ends and the battery temperature stabilizes to the ambient temperature.

[0075] When multiple battery packs 8 experience thermal runaway at the same time, the battery packs experiencing thermal runaway can be switched according to the aforementioned process.

[0076] In combination with the above, it can be seen that the present application proposes an immersion cooling thermal runaway management system. When thermal runaway of a battery cell occurs in a single battery pack 8, the coolant circulation system is switched to isolate the runaway battery pack 8, and the coolant in the thermal runaway battery pack is kept running continuously to take away the heat generated by the thermal runaway. At the same time, the electrolyte, components, etc. that flow into the coolant in the thermal runaway battery pack are prevented from being brought into other normally operating battery packs 8, thereby reducing the losses caused by thermal runaway of the battery cells.

[0077] Embodiment 2

[0078] Embodiment 2 of the present application further provides an energy storage system, including the immersion cooling thermal runaway management system described in the above embodiment 1, and thus, has all the beneficial technical effects of the immersion cooling thermal runaway management system, and the same technical features and beneficial effects are not repeated here.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An immersion cooling thermal runaway management system, characterized in that: include: A main circulation system, a main liquid inlet valve, a main liquid outlet valve, an auxiliary circulation system, an auxiliary liquid inlet valve, an auxiliary liquid outlet valve and a plurality of battery packs; wherein any of the battery packs is equipped with a main liquid inlet valve and a main liquid outlet valve, and the liquid inlet of any of the battery packs is connected to the outlet of the main circulation system through the corresponding main liquid inlet valve, and the liquid outlet of any of the battery packs is connected to the inlet of the main circulation system through the corresponding main liquid outlet valve; The liquid inlet of any battery pack is connected to the outlet of the auxiliary circulation system through the auxiliary liquid inlet valve, and the liquid outlet of any battery pack is connected to the inlet of the auxiliary circulation system through the auxiliary liquid outlet valve.

2. The immersion cooling thermal runaway management system according to claim 1, characterized in that: The main circulation system includes a first coolant buffer tank, a first refrigeration device and a first cooling pump; Wherein, the liquid inlet of any of the battery packs is connected to the outlet of the first coolant buffer tank via the corresponding main liquid inlet valve, the first cooling pump, the first refrigeration device in sequence; The liquid outlet of any of the battery packs is connected to the inlet end of the first coolant buffer tank via the corresponding main liquid outlet valve.

3. The immersion cooling thermal runaway management system according to claim 2, characterized in that: The main circulation system further includes a main filter, and the main filter is arranged between the inlet end of the first coolant buffer tank and the liquid outlet of any one of the battery packs.

4. The immersion cooling thermal runaway management system according to claim 2, characterized in that: The auxiliary circulation system further includes a total input pipeline, a branch input pipeline, a branch output pipeline and a total output pipeline; wherein the liquid inlet of any of the battery packs is respectively connected to one of the branch input pipelines, and any of the branch input pipelines is provided with the main liquid inlet valve; Any of the branch input pipelines is connected to the main input pipeline, and is connected to the first cooling pump via the main input pipeline; The liquid outlet of any of the battery packs is respectively connected to one of the branch output pipelines, and any of the branch output pipelines is provided with the liquid outlet valve; any of the branch output pipelines is connected to the main output pipeline, and is connected to the inlet end of the first coolant buffer tank via the main output pipeline.

5. The immersion cooling thermal runaway management system according to claim 1, characterized in that: The auxiliary circulation system includes a second coolant buffer tank, a second refrigeration device and a second cooling pump; Among them, the liquid inlet of any battery pack is connected to the outlet end of the second coolant buffer tank via the auxiliary liquid inlet valve, the second cooling pump, and the second refrigeration device in sequence; the liquid outlet of any battery pack is connected to the inlet end of the second coolant buffer tank via the auxiliary liquid outlet valve.

6. The immersion cooling thermal runaway management system according to claim 5, characterized in that: The auxiliary circulation system further includes an auxiliary filter, and the auxiliary filter is arranged between the inlet end of the second coolant buffer tank and the liquid outlet of any one of the battery packs.

7. The immersion cooling thermal runaway management system according to claim 5, characterized in that: The auxiliary circulation system also includes a total auxiliary input pipeline, a sub-auxiliary input pipeline, a sub-auxiliary output pipeline and a total auxiliary output pipeline; Wherein, the liquid inlet of any of the battery packs is respectively connected to one of the sub-auxiliary input pipelines, and any of the sub-auxiliary input pipelines is connected to the main auxiliary input pipeline, and is connected to the second cooling pump via the main auxiliary input pipeline; The liquid outlet of any of the battery packs is respectively connected to one of the sub-auxiliary output pipelines, and any of the sub-auxiliary output pipelines is connected to the total auxiliary output pipeline, and is in turn connected to the inlet end of the second coolant buffer tank via the total auxiliary output pipeline and the auxiliary liquid outlet valve.

8. The immersion cooling thermal runaway management system according to claim 1, characterized in that: The auxiliary circulation system is connected to the main circulation system, and a liquid injection valve is arranged on the pipeline connecting the two, so that the liquid of the auxiliary circulation system flows into the main circulation system to add coolant to the auxiliary circulation system.

9. The immersion cooling thermal runaway management system according to any one of claims 1 to 8, characterized in that: The immersion cooling thermal runaway management system also includes a controller, and the controller is respectively communicatively connected with the main circulation system, the main liquid inlet valve, the main liquid outlet valve, the auxiliary circulation system, the auxiliary liquid inlet valve, the auxiliary circulation system and the plurality of battery packs.

10. An energy storage system, characterized in that: An immersion cooling thermal runaway management system comprising any one of claims 1 to 9.

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