Immersion fire-fighting and liquid-cooling integrated liquid cooling unit

Abstract

The utility model provides an immersion fire fighting and liquid cooling integrated liquid cooling unit, the system comprises a fire fighting and liquid cooling integrated controller, a liquid cooling loop module, a split isolation water tank and a fire fighting loop module, the split isolation water tank comprises a liquid cooling agent storage water tank and a fire fighting inhibitor storage water tank which are isolated from each other; the liquid cooling loop module is connected with the fire-fighting liquid cooling integrated controller and the liquid cooling agent storage water tank, the fire-fighting loop module is connected with the fire-fighting liquid cooling integrated controller and the fire-fighting inhibitor storage water tank, and the fire-fighting liquid cooling integrated controller is further used for being connected with a sensor module in the energy storage system. Based on the system provided by the utility model, thermal runaway control can be better carried out, and the system is suitable for energy storage systems in various scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and in particular to an immersion fire protection and liquid cooling integrated liquid cooling unit. Background Art

[0002] With the continuous development of energy storage systems, energy storage systems are increasingly used on the power generation side and the user side. To meet the demand for energy storage, more and more battery packs are used in energy storage systems. However, with the increase in battery packs, the energy storage system releases more and more heat during operation. In extreme cases, a sharp increase in battery temperature can easily lead to thermal runaway, which in turn causes fires and endangers people's lives.

[0003] Currently, most energy storage systems use liquid cooling units to cool down batteries. This method cannot control the temperature of the entire energy storage system in the event of thermal runaway, and the thermal runaway control effect is not obvious. Some energy storage systems will link liquid cooling units and external fire-fighting equipment to carry out fire-fighting treatment of energy storage systems in the event of thermal runaway. However, this method relies on external fire-fighting equipment and is not well suited for energy storage systems deployed in different scenarios. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the utility model proposes an immersion fire-fighting and liquid-cooling integrated liquid cooling unit, the main purpose of which is to better control thermal runaway and is suitable for energy storage systems in various scenarios.

[0006] To achieve the above-mentioned purpose, the utility model proposes an immersion fire-fighting and liquid-cooling integrated liquid cooling unit, including a fire-fighting liquid cooling integrated controller, a liquid cooling circuit module, a split isolation water tank and a fire-fighting circuit module, the split isolation water tank includes a liquid coolant storage water tank and a fire-fighting inhibitor storage water tank that are isolated from each other, the liquid cooling circuit module is respectively connected to the fire-fighting liquid cooling integrated controller and the liquid coolant storage water tank, the fire-fighting circuit module is respectively connected to the fire-fighting liquid cooling integrated controller and the fire-fighting inhibitor storage water tank, and the fire-fighting liquid cooling integrated controller is also used to connect the sensor module in the energy storage system.

[0007] In the integrated liquid cooling unit for immersion fire fighting and liquid cooling proposed in the utility model, the liquid cooling circuit module includes a circulating refrigeration unit, a heat exchange unit, and a supply and return water delivery unit. The circulating refrigeration unit and the supply and return water delivery unit exchange heat at the heat exchange unit. The circulating refrigeration unit is respectively connected to the fire fighting liquid cooling integrated controller and the liquid coolant storage water tank, and the supply and return water delivery unit is respectively connected to the fire fighting liquid cooling integrated controller and the liquid coolant storage water tank.

[0008] In the integrated liquid cooling unit for immersion fire fighting and liquid cooling proposed in the utility model, the circulating refrigeration unit includes a circulating pipeline, and a compressor, a condenser, and an electronic expansion valve arranged on the circulating pipeline, and the circulating pipeline is connected to a cold flow pipe of the heat exchange unit.

[0009] In the integrated liquid cooling unit for immersion fire protection and liquid cooling proposed in the utility model, there are multiple circulating refrigeration units, there are multiple cold flow pipes of the heat exchange unit, and each circulating refrigeration unit is connected to a different cold flow pipe.

[0010] In the integrated liquid cooling unit for immersion fire protection and liquid cooling proposed in the utility model, the heat exchange unit adopts a plate heat exchanger.

[0011] In the integrated liquid cooling unit for immersion fire protection and liquid cooling proposed in the utility model, the supply and return water transportation unit includes a liquid cooling return water pipeline, a liquid cooling water supply pipeline, an expansion tank arranged on the liquid cooling return water pipeline, a circulating pump, and a heater arranged on the liquid cooling water supply pipeline. The input end of the circulating pump is also connected to the liquid coolant storage water tank, the liquid cooling water supply pipeline is also connected to the liquid coolant storage water tank, and the liquid cooling return water pipeline is connected to the liquid cooling water supply pipeline via the heat flow pipeline of the heat exchange unit.

[0012] In the integrated liquid cooling unit for immersion fire fighting and liquid cooling proposed in the utility model, the supply and return water delivery unit also includes a first pressure and temperature sensor arranged on the liquid cooling return water pipeline and a second pressure and temperature sensor arranged on the liquid cooling water supply pipeline. The first pressure and temperature sensor and the second pressure and temperature sensor are connected to the fire fighting liquid cooling integrated controller.

[0013] In the integrated liquid cooling unit for immersion fire fighting and liquid cooling proposed in the utility model, the supply and return water delivery unit further comprises a first quick-connect chuck arranged on the liquid cooling return water pipeline and a second quick-connect chuck arranged on the liquid cooling supply water pipeline.

[0014] In the integrated liquid cooling unit for immersion fire protection and liquid cooling proposed in the utility model, the fire protection circuit module includes a fire protection return water pipeline, a unit water supply pipeline, a first fire protection control valve arranged on the fire protection return water pipeline, and a second fire protection control valve arranged on the unit water supply pipeline.

[0015] In the integrated liquid cooling unit for immersion fire protection and liquid cooling proposed in the utility model, the liquid cooling circuit module also includes a condensing fan.

[0016] The utility model of the immersion fire protection and liquid cooling integrated liquid cooling unit includes a fire protection liquid cooling integrated controller, a liquid cooling circuit module, a split isolation water tank and a fire protection circuit module. The split isolation water tank includes a liquid coolant storage water tank and a fire protection inhibitor storage water tank that are isolated from each other. The liquid cooling circuit module is respectively connected to the fire protection liquid cooling integrated controller and the liquid coolant storage water tank. The fire protection circuit module is respectively connected to the fire protection liquid cooling integrated controller and the fire protection inhibitor storage water tank. The fire protection liquid cooling integrated controller is also used to connect the sensor module in the energy storage system. In this case, the immersion fire protection and liquid cooling integrated liquid cooling unit of the present invention has a fire protection liquid cooling integrated controller that takes into account both fire protection control and liquid cooling control. At the same time, the liquid coolant and the fire protection inhibitor share a split isolation water tank. A complete liquid cooling system is formed by the fire protection liquid cooling integrated controller, the liquid cooling circuit module and the split isolation water tank. A complete fire protection system is formed by the fire protection liquid cooling integrated controller, the fire protection circuit module and the split isolation water tank. When the energy storage system operates normally, the liquid cooling system operates normally. When a risk of thermal runaway is detected, the liquid cooling system and the fire protection system operate simultaneously to prevent heat diffusion, thereby better performing thermal runaway control. In addition, the present invention has a dual system of a liquid cooling system and a fire fighting system and does not rely on external fire fighting equipment, so it is suitable for energy storage systems in various scenarios.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A block diagram of an immersion fire protection and liquid cooling integrated liquid cooling unit provided by an embodiment of the utility model;

[0020] Figure 2 A cross-sectional schematic diagram of an immersion fire protection and liquid cooling integrated liquid cooling unit provided by an embodiment of the utility model;

[0021] Figure 3 A connection diagram of an immersion fire-fighting and liquid-cooling integrated liquid cooling unit provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the utility model. Instead, they are only examples of devices and methods consistent with some aspects of the embodiments of the utility model as detailed in the attached claims.

[0023] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. It should also be understood that the term "and / or" used in the present utility model refers to and includes any or all possible combinations of one or more associated listed items.

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The utility model is described in detail below in conjunction with specific embodiments.

[0027] The utility model proposes an immersion fire protection and liquid cooling integrated liquid cooling unit, the main purpose of which is to better control thermal runaway and is suitable for energy storage systems in various scenarios.

[0028] Figure 1 A block diagram of an integrated liquid cooling unit for immersion fire protection and liquid cooling provided in an embodiment of the utility model. Figure 2The cross-sectional schematic diagram of an immersion fire-fighting and liquid-cooling integrated liquid cooling unit provided in an embodiment of the utility model.

[0029] like Figure 1 As shown, the immersion fire protection and liquid cooling integrated liquid cooling unit provided by the embodiment of the utility model includes a fire protection liquid cooling integrated controller, a liquid cooling circuit module, a split isolation water tank and a fire protection circuit module. The split isolation water tank includes a liquid coolant storage water tank and a fire protection inhibitor storage water tank that are isolated from each other. The liquid cooling circuit module is respectively connected to the fire protection liquid cooling integrated controller and the liquid coolant storage water tank. The fire protection circuit module is respectively connected to the fire protection liquid cooling integrated controller and the fire protection inhibitor storage water tank.

[0030] In this embodiment, the fire-fighting liquid cooling integrated controller, the liquid cooling circuit module and the split isolation water tank constitute a complete liquid cooling system. When the energy storage system is operating normally, the liquid cooling system is used to cool or heat the energy storage system. The fire-fighting liquid cooling integrated controller, the fire-fighting circuit module and the split isolation water tank constitute a complete fire-fighting system. When the energy storage system has thermal runaway, the liquid cooling system cools the energy storage system, and the fire-fighting system performs immersion firefighting on the energy storage system.

[0031] Specifically, the fire-fighting liquid-cooling integrated controller is used to connect the sensor modules in the energy storage system. The sensor modules in the energy storage system include but are not limited to carbon monoxide detectors, smoke detectors, temperature sensors, and VOC (Volatile Organic Compounds) detectors. The fire-fighting liquid-cooling integrated controller obtains the carbon monoxide concentration, smoke concentration, battery temperature, and VOC concentration of the energy storage system in real time to determine whether the energy storage system has thermal runaway. If the energy storage system operates normally, the fire-fighting liquid-cooling integrated controller controls the liquid cooling circuit module to use liquid coolant to cool or heat the batteries of the energy storage system; if the energy storage system has thermal runaway (that is, there is a risk of thermal runaway), the fire-fighting liquid-cooling integrated controller controls the liquid cooling circuit module to use liquid coolant to cool the batteries of the energy storage system, and controls the fire-fighting circuit module to use fire suppressants to immerse the batteries of the energy storage system for firefighting. In this embodiment, the fire-fighting liquid-cooling integrated controller 11 can be located in the lower inner cavity 14 of the immersion fire-fighting and liquid-cooling integrated liquid cooling unit 10 (see Figure 2 In (a)), the lower inner cavity 14 refers to the inner cavity near the ground.

[0032] In this embodiment, the liquid cooling circuit module can cool or heat the batteries of the energy storage system.

[0033] In this embodiment, the liquid cooling circuit module includes a circulating refrigeration unit, a heat exchange unit, and a supply and return water delivery unit. The circulating refrigeration unit and the supply and return water delivery unit exchange heat at the heat exchange unit, the circulating refrigeration unit is respectively connected to the fire liquid cooling integrated controller and the liquid coolant storage water tank, and the supply and return water delivery unit is respectively connected to the fire liquid cooling integrated controller and the liquid coolant storage water tank. Specifically, if the fire liquid cooling integrated controller detects that the battery temperature is higher than the preset upper temperature limit, the fire liquid cooling integrated controller controls the circulation refrigeration unit and the supply and return water delivery unit to operate, and the circulation refrigeration unit and the supply and return water delivery unit perform heat exchange at the heat exchange unit to cool the liquid coolant in the supply and return water delivery unit, and the cooled liquid coolant is sent to the energy storage system through the supply and return water delivery unit to cool the batteries of the energy storage system. If the fire liquid cooling integrated controller detects that the battery temperature is lower than the preset lower temperature limit, the fire liquid cooling integrated controller controls the circulation refrigeration unit to stop operating, and controls the heater in the supply and return water delivery unit to heat the liquid coolant in the supply and return water delivery unit, and the heated liquid coolant is sent to the energy storage system through the supply and return water delivery unit to heat the batteries of the energy storage system.

[0034] In this embodiment, there are multiple circulating refrigeration units, there are multiple cold flow pipes in the heat exchange unit, and each circulating refrigeration unit is connected to a different cold flow pipe.

[0035] In this embodiment, each circulating refrigeration unit includes a circulating pipeline, and a compressor, a condenser, and an electronic expansion valve arranged on the circulating pipeline, and the circulating pipeline is connected to a cold flow pipe of the heat exchange unit. The compressor is used to compress the liquid coolant in the circulating pipeline. The condenser plays a role in condensing the liquid coolant. The electronic expansion valve is both a flow regulating valve and a throttle valve, which plays a throttling and pressure reduction role. The compressor, condenser, and electronic expansion valve are all controlled by the fire-fighting liquid cooling integrated controller. When refrigeration is required, the fire-fighting liquid cooling integrated controller controls and adjusts the compressor, condenser, and electronic expansion valve of the circulating refrigeration unit.

[0036] In this embodiment, the input end of the compressor is also connected to the liquid refrigerant storage water tank. If the liquid refrigerant loss in the circulation pipeline of the circulation refrigeration unit exceeds the set loss range, the fire liquid cooling integrated controller controls the passage between the input end of the compressor and the liquid refrigerant storage water tank to replenish the liquid refrigerant into the circulation pipeline.

[0037] In this embodiment, the liquid cooling circuit module further includes a condensing fan. The condensing fan can further condense the liquid coolant. The condensing fan is controlled by the fire protection liquid cooling integrated controller.

[0038] In some embodiments, two cycle refrigeration units may share a condensing fan.

[0039] In this embodiment, the heat exchange unit adopts a plate heat exchanger. The heat exchange unit includes a cold flow pipe and a hot flow pipe. The cold flow pipe is connected to the circulating refrigeration unit, and the hot flow pipe is connected to the supply and return water delivery unit. The number of cold flow pipes can be multiple, each cold flow pipe is connected to a different circulating refrigeration unit, and each cold flow pipe and the circulation pipeline of the corresponding circulating refrigeration unit form a closed loop.

[0040] In this embodiment, the supply and return water transport unit includes a liquid cooling return water pipeline, a liquid cooling water supply pipeline, an expansion tank arranged on the liquid cooling return water pipeline, a circulating pump, and a heater arranged on the liquid cooling water supply pipeline. The input end of the circulating pump is also connected to the liquid coolant storage water tank, the liquid cooling water supply pipeline is also connected to the liquid coolant storage water tank, and the liquid cooling return water pipeline is connected to the liquid cooling water supply pipeline via the heat flow pipe of the heat exchange unit.

[0041] In this embodiment, the liquid cooling return water pipeline is used to deliver the liquid coolant in the liquid cooling storage tank or the liquid cooling return water from the energy storage system (i.e., the liquid coolant returned by the energy storage system) to the expansion tank. The expansion tank is used to ensure the pressure stability of the liquid coolant in the liquid cooling return water pipeline. The circulating pump is used to provide power for the transportation of the liquid coolant in the supply and return water delivery unit. The liquid cooling water supply pipeline is used to deliver the cooled or heated liquid coolant to the energy storage system (i.e., to provide liquid cooling water supply to the energy storage system). The heater is used to heat the liquid coolant when the energy storage system needs to heat.

[0042] In this embodiment, the expansion tank, the circulation pump, and the heater are controlled by the fire liquid cooling integrated controller. The on-off of the pipeline between the input end of the circulation pump and the liquid coolant storage water tank and the on-off of the pipeline between the liquid cooling water supply pipeline and the liquid coolant storage water tank are controlled by the fire liquid cooling integrated controller.

[0043] In this embodiment, the supply and return water delivery unit also includes a first pressure and temperature sensor arranged on the liquid cooling return water pipeline and a second pressure and temperature sensor arranged on the liquid cooling water supply pipeline, and the first pressure and temperature sensor and the second pressure and temperature sensor are connected to the fire liquid cooling integrated controller. The first pressure and temperature sensor is located on the inlet side of the liquid cooling return water pipeline, and the second pressure and temperature sensor is located on the outlet side of the liquid cooling water supply pipeline. The first pressure and temperature sensor is used to detect the pressure and temperature of the liquid coolant on the inlet side of the liquid cooling return water pipeline, and the second pressure and temperature sensor is used to detect the pressure and temperature of the liquid coolant on the outlet side of the liquid cooling water supply pipeline. The fire liquid cooling integrated controller obtains the pressure and temperature of the liquid coolant on the inlet and outlet sides collected by the first pressure and temperature sensor and the second pressure and temperature sensor in real time, so as to realize the regulation of the pressure and temperature of the liquid coolant on the inlet and outlet sides by controlling the corresponding components of the circulating refrigeration unit and the supply and return water delivery unit.

[0044] In this embodiment, the water supply and return conveying unit further includes a first quick-connect chuck arranged on the liquid cooling water return pipeline and a second quick-connect chuck arranged on the liquid cooling water supply pipeline. The first quick-connect chuck and the second quick-connect chuck can quickly, conveniently, efficiently and stably connect to the corresponding pipeline in the energy storage system.

[0045] In this embodiment, the split isolation water tank 12 includes a liquid coolant storage water tank and a fire suppressant storage water tank that are isolated from each other. The liquid coolant storage water tank is used to store liquid coolant A, and the fire suppressant storage water tank is used to store fire suppressant B. The split isolation water tank 12 can be located in the upper inner cavity 13 of the immersion fire protection and liquid cooling integrated liquid cooling unit 10 (see Figure 2 (a)), wherein the upper inner cavity 13 refers to the distal inner cavity. Figure 2 The left water tank of the split isolation water tank 12 in (b) may be a fire suppressant storage water tank storing fire suppressant B, and the right water tank isolated from the left water tank is a liquid coolant storage water tank storing liquid coolant A. The fire suppressant storage water tank outputs and recovers the fire suppressant through a fire control valve 15 (described later).

[0046] In this embodiment, the fire protection circuit module includes a fire protection water return pipeline, a unit water supply pipeline, a first fire protection control valve arranged on the fire protection water return pipeline, and a second fire protection control valve arranged on the unit water supply pipeline.

[0047] In this embodiment, the first fire control valve and the second fire control valve are controlled by the fire liquid cooling integrated controller. When the energy storage system has a risk of thermal runaway, the fire liquid cooling integrated controller controls the opening or closing of the first fire control valve and the second fire control valve within the corresponding time as needed. In some embodiments, the first fire control valve can be set at the connection between the fire return water pipeline and the fire suppressant storage water tank, and the second fire control valve can be set at the connection between the fire suppressant storage water tank and the unit water supply pipeline.

[0048] In this embodiment, one end of the fire return water pipeline is connected to the fire suppressant storage water tank, and the other end is used to connect to the fire water outlet pipeline in the energy storage system. One end of the unit water supply pipeline is connected to the fire suppressant storage water tank, and the other end is used to connect to the fire water inlet pipeline in the energy storage system. When the second fire control valve is turned on, the fire suppressant enters the energy storage system through the unit water supply pipeline to provide fire water supply to the energy storage system. When the first fire control valve is turned on, the fire suppressant in the energy storage system enters the fire suppressant storage water tank through the fire return water pipeline to recover the fire return water (i.e., the fire suppressant discharged from the energy storage system).

[0049] Take the case where the liquid cooling circuit module includes two circulating refrigeration units and the heat exchange unit adopts a plate heat exchanger as an example. Figure 3A connection diagram of an immersion fire-fighting and liquid-cooling integrated liquid cooling unit provided in an embodiment of the utility model. Figure 3 It is only a partial connection diagram of the integrated liquid cooling unit for immersion fire protection and liquid cooling.

[0050] like Figure 3 As shown, the liquid cooling circuit module includes a first circulating refrigeration unit 20, a second circulating refrigeration unit 30, a plate heat exchanger 40 and a supply and return water delivery unit 50. The first circulating refrigeration unit 20 and a cold flow pipe of the plate heat exchanger 40 form a first closed loop shown by a green arrow, the second circulating refrigeration unit 30 and another cold flow pipe of the plate heat exchanger 40 form a second closed loop shown by a blue arrow, and the flow direction of the liquid coolant in the supply and return water delivery unit 50 is shown by a red arrow. The first circulating refrigeration unit 20 includes a circulating pipeline, and a compressor 21, a condenser 22, and an electronic expansion valve 23 (hereinafter referred to as an expansion valve) arranged on the circulating pipeline. The components included in the second circulating refrigeration unit 30 are consistent with those of the first circulating refrigeration unit 20. The first circulating refrigeration unit 20 and the second circulating refrigeration unit 30 share a condensing fan 60. The water supply and return conveying unit 50 includes a liquid cooling return water pipeline, a first quick-connect chuck 51, a first pressure and temperature sensor 52, an expansion tank 53, and a circulation pump 54, which are sequentially arranged on the liquid cooling return water pipeline. It also includes a liquid cooling water supply pipeline, and a heater 55, a second pressure and temperature sensor 56, and a second quick-connect chuck 57, which are sequentially arranged on the liquid cooling water supply pipeline. Among them, the input end of the circulation pump 54 is also connected to the liquid coolant storage water tank 16 in the split isolation water tank, the liquid cooling water supply pipeline is also connected to the liquid coolant storage water tank 16, and the liquid cooling return water pipeline is connected to the liquid cooling water supply pipeline through the heat flow pipeline of the heat exchange unit. One end of the fire return water pipeline is connected to the fire inhibitor storage water tank 17, and one end of the unit water supply pipeline is also connected to the fire inhibitor storage water tank 17. The fire liquid cooling integrated controller is not shown in the figure.

[0051] based on Figure 3 The operation process of the integrated liquid cooling unit for immersion fire fighting and liquid cooling of the present invention is as follows:

[0052] The fire-fighting liquid-cooling integrated controller obtains the carbon monoxide concentration, smoke concentration, battery temperature and VOC concentration of the energy storage system, as well as the liquid coolant pressure and temperature on the inlet and outlet sides in real time. If the energy storage system operates normally, the fire-fighting liquid-cooling integrated controller controls the cooling capacity of the liquid cooling system. When the temperature of the single battery cell is too high, the liquid cooling unit starts to cool, and when the battery cell temperature is too low, it starts to heat. When the controller detects that the values ​​of carbon monoxide, smoke, temperature, VOC, etc. are too high, it issues a first-level alarm, a second-level alarm, a third-level alarm, a fourth-level alarm, etc., and checks out the pack that has thermal runaway. While keeping the liquid cooling system running, it controls the fire-fighting system at the same time, opens the corresponding fire control valve, and sprays the pack in a targeted manner to accurately and effectively suppress thermal runaway of the battery cell.

[0053] The embodiment of the utility model proposes an immersion fire protection and liquid cooling integrated liquid cooling unit, including a fire protection liquid cooling integrated controller, a liquid cooling circuit module, a split isolation water tank and a fire protection circuit module, the split isolation water tank includes a liquid coolant storage water tank and a fire protection inhibitor storage water tank that are isolated from each other, the liquid cooling circuit module is respectively connected to the fire protection liquid cooling integrated controller and the liquid coolant storage water tank, the fire protection circuit module is respectively connected to the fire protection liquid cooling integrated controller and the fire protection inhibitor storage water tank, and the fire protection liquid cooling integrated controller is also used to connect the sensor module in the energy storage system. In this case, the immersion fire protection and liquid cooling integrated liquid cooling unit of the present invention has a fire protection liquid cooling integrated controller that takes into account both fire protection control and liquid cooling control, and at the same time, the liquid coolant and the fire protection inhibitor share a split isolation water tank, and a complete liquid cooling system is formed by the fire protection liquid cooling integrated controller, the liquid cooling circuit module and the split isolation water tank, and a complete fire protection system is formed by the fire protection liquid cooling integrated controller, the fire protection circuit module and the split isolation water tank. When the energy storage system operates normally, the liquid cooling system operates normally. When a risk of thermal runaway is detected, the liquid cooling system and the fire protection system operate simultaneously to prevent heat diffusion, thereby better performing thermal runaway control. In addition, the present invention has a dual system of a liquid cooling system and a fire fighting system and does not rely on external fire fighting equipment, so it is suitable for energy storage systems in various scenarios.

[0054] The integrated liquid cooling unit for submerged fire protection and liquid cooling of the present invention is a new type of liquid cooling unit. Compared with the traditional liquid cooling unit, the integrated fire protection liquid cooling controller of the present invention combines the fire protection host control and the liquid cooling host control into one, and adopts a dual system to control liquid cooling on one side and fire protection on the other side. At the same time, the systems are relatively independent, and the split isolation water tank adopts a separation design, with liquid refrigerant on one side and fire protection inhibitor on the other side. The present invention also controls the liquid cooling system and the fire protection system separately through the integrated fire protection liquid cooling controller. When the energy storage system operates normally, the integrated liquid cooling unit for submerged fire protection and liquid cooling normally performs liquid cooling (i.e., cooling or heating) for the battery. When the controller detects that the energy storage system has thermal runaway, while cooling the battery, the controller transmits a control signal to the corresponding fire control valve, and opens the fire control valve to use the fire protection inhibitor to accurately spray the battery pack (battery pack) to achieve submerged fire protection, effectively and accurately control the thermal runaway of a single pack, thereby causing the entire container to catch fire.

[0055] The immersion fire protection and liquid cooling integrated liquid cooling unit of the present invention can completely solve the fire hazard and greatly reduce the cost. Compared with the existing technology, the present invention combines the liquid cooling system and the fire protection system to invent an integrated device of the liquid cooling unit with fire protection. The integrated device of the present invention has two complete independent systems of liquid cooling fire protection. The pipelines of the liquid cooling system and the fire protection system are relatively independent. The fire control host and the liquid cooling control host are merged, and the control logic is integrated. At the same time, the battery control liquid cooling box and the immersion fire protection share an integrated warehouse. The integrated warehouse design adopts an intermediate isolation design, that is, the internal middle adopts an isolation design scheme to isolate the liquid cooling system liquid from the fire protection liquid. Liquid coolant is added on one side and immersion fire protection inhibitor is added on the other side. When the entire energy storage system is operating normally, the liquid cooling system is operating normally. When the risk of thermal runaway is detected, the controller controls the fire protection system while controlling the liquid cooling system to open the pack bag that has thermal runaway to accurately control and prevent heat diffusion. The patent of the present invention can effectively control the temperature of the container pack of the entire energy storage system and can effectively and accurately control the pack bag.

[0056] It should be understood that the components, connections and relationships of the components, and functions of the components shown in the present invention are merely examples and are not intended to limit the implementation of the present invention described and / or required in the present invention. The various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in the present invention can be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and the present invention is not limited here.

[0057] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An integrated liquid cooling unit for immersion fire fighting and liquid cooling, characterized in that: It includes a fire-fighting liquid-cooled integrated controller, a liquid-cooling circuit module, a split isolation water tank and a fire-fighting circuit module. The split isolation water tank includes a liquid coolant storage water tank and a fire-fighting inhibitor storage water tank that are isolated from each other. The liquid-cooling circuit module is respectively connected to the fire-fighting liquid-cooled integrated controller and the liquid coolant storage water tank. The fire-fighting circuit module is respectively connected to the fire-fighting liquid-cooled integrated controller and the fire-fighting inhibitor storage water tank. The fire-fighting liquid-cooled integrated controller is also used to connect the sensor module in the energy storage system.

2. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 1 is characterized in that: The liquid cooling circuit module includes a circulating refrigeration unit, a heat exchange unit, and a supply and return water transport unit. The circulating refrigeration unit and the supply and return water transport unit exchange heat at the heat exchange unit. The circulating refrigeration unit is respectively connected to the fire-fighting liquid cooling integrated controller and the liquid coolant storage water tank, and the supply and return water transport unit is respectively connected to the fire-fighting liquid cooling integrated controller and the liquid coolant storage water tank.

3. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 2 is characterized in that: The circulating refrigeration unit comprises a circulating pipeline, and a compressor, a condenser, and an electronic expansion valve arranged on the circulating pipeline. The circulating pipeline is connected to a cold flow pipeline of the heat exchange unit.

4. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 3 is characterized in that: There are multiple circulating refrigeration units, there are multiple cold flow pipes in the heat exchange unit, and each circulating refrigeration unit is connected to a different cold flow pipe.

5. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 2 is characterized in that: The heat exchange unit adopts a plate heat exchanger.

6. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 2 is characterized in that: The supply and return water transport unit includes a liquid cooling return water pipeline, a liquid cooling water supply pipeline, an expansion tank arranged on the liquid cooling return water pipeline, a circulating pump, and a heater arranged on the liquid cooling water supply pipeline. The input end of the circulating pump is also connected to the liquid coolant storage water tank, the liquid cooling water supply pipeline is also connected to the liquid coolant storage water tank, and the liquid cooling return water pipeline is connected to the liquid cooling water supply pipeline via the heat flow pipeline of the heat exchange unit.

7. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 6 is characterized in that: The supply and return water delivery unit also includes a first pressure and temperature sensor arranged on the liquid cooling return water pipeline and a second pressure and temperature sensor arranged on the liquid cooling supply water pipeline. The first pressure and temperature sensor and the second pressure and temperature sensor are connected to the fire-fighting liquid cooling integrated controller.

8. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 6 is characterized in that: The supply and return water delivery unit further comprises a first quick-connect chuck arranged on the liquid-cooling return water pipeline and a second quick-connect chuck arranged on the liquid-cooling supply water pipeline.

9. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 1, characterized in that: The fire protection circuit module includes a fire protection water return pipeline, a unit water supply pipeline, a first fire protection control valve arranged on the fire protection water return pipeline, and a second fire protection control valve arranged on the unit water supply pipeline.

10. The integrated liquid cooling unit for immersion fire fighting and liquid cooling according to claim 4, characterized in that: The liquid cooling circuit module also includes a condensing fan.

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