Heat management module for energy storage system and energy storage system

Abstract

The utility model relates to the field of energy storage, and provides a heat management module for an energy storage system and the energy storage system. The thermal management module for the energy storage system comprises a medium storage part, and the medium storage part is used for storing a circulating medium and maintaining the circulating medium within a specified temperature range; the heat exchange part communicates with the medium storage part through a first pipeline, and the heat exchange part is suitable for driving the circulating medium to flow to the target object through the first pipeline, so that the circulating medium exchanges heat with the target object; and the fire fighting part is suitable for enabling the circulating medium in the medium storage part to be in contact with the target object under the condition that the target object is subjected to a fire disaster, so that fire extinguishing of the target object is completed. According to the heat management module for the energy storage system, accurate temperature control over the energy storage system can be achieved, rapid fire extinguishing of a fire source can be achieved, the structure of the heat management module is simplified, cost is reduced, and maintenance of the energy storage system is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of energy storage and provides a thermal management module for an energy storage system and an energy storage system. Background Art

[0002] With the large-scale advancement of energy storage systems, cluster-controlled energy storage is being used more and more widely in energy storage systems.

[0003] In the related art, the thermal management module is in the form of one control for multiple target objects, which is not conducive to the expansion of target objects. Moreover, when there is a thermal management requirement for a target object, it is usually necessary to concentrate multiple functional modules to achieve complex and changeable thermal management requirements. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a thermal management module for an energy storage system, which can flexibly realize heat exchange and fire extinguishing between a circulating medium and a target object in a form according to actual thermal management requirements, simplify the structure of the thermal management module, and reduce thermal management costs.

[0005] A second aspect of the present invention provides an energy storage system.

[0006] The first embodiment of the utility model provides a thermal management module for an energy storage system, comprising:

[0007] a medium storage unit, the medium storage unit being used to store a circulating medium and to maintain the circulating medium within a specified temperature range;

[0008] a heat exchange part, the heat exchange part being in communication with the medium storage part through a first pipeline, the heat exchange part being adapted to drive the circulating medium to flow toward a target object through the first pipeline so as to exchange heat between the circulating medium and the target object;

[0009] A fire fighting unit is configured to enable the circulating medium in the medium storage unit to contact the target object in case a fire occurs in the target object, so as to extinguish the fire of the target object.

[0010] According to an embodiment of the present invention, the medium storage portion is a water reservoir.

[0011] According to an embodiment of the utility model, the water reservoir is pre-buried in the foundation.

[0012] According to one embodiment of the utility model, the fire fighting unit includes a fire fighting pipeline and a first flow control element.

[0013] Wherein, the fire-fighting pipeline is connected between the liquid inlet section of the first pipeline and the target object, and the first flow control component is arranged on the fire-fighting pipeline.

[0014] According to one embodiment of the utility model, the fire fighting unit includes a fire fighting pump, a second pipeline and a second flow control element.

[0015] The fire pump is connected to the medium storage part through the second pipeline, the second pipeline is connected to the target object, and the second flow control element is arranged on the second pipeline and located between the fire pump and the target object.

[0016] According to an embodiment of the utility model, the fire fighting part comprises a fire fighting pipeline, a sealing film is arranged on the fire fighting pipeline between the first flow control part and the target object, and an overflow hole is opened on the fire fighting pipeline between the sealing film and the first flow control part;

[0017] The fire fighting part comprises a second pipeline, a sealing film is arranged on the second pipeline between the second flow control member and the target object, and an overflow hole is opened on the second pipeline between the sealing film and the second flow control member.

[0018] According to one embodiment of the present invention, the fire fighting unit includes a heating element.

[0019] The heating element is arranged on the segmented pipeline corresponding to the first pipeline and the target object, and is suitable for melting the segmented pipeline in case of a fire at the target object, so that the circulating medium contacts the target object to extinguish the fire of the target object.

[0020] A second aspect of the present invention provides an energy storage system, including a battery module and the thermal management module as described above.

[0021] According to an embodiment of the utility model, the energy storage system comprises a plurality of stacked battery modules, each of the battery modules comprises a box having a closed chamber for accommodating a battery cell, and the target object is the battery cell;

[0022] The fire-fighting unit is adapted to enable the circulating medium in the medium storage unit to flow into the closed chamber and contact the battery cell to extinguish the fire of the battery cell when a fire occurs in the battery cell.

[0023] According to one embodiment of the utility model, the energy storage system comprises a plurality of battery packs, and the plurality of battery packs are arranged in parallel and transverse connection with each other;

[0024] The battery pack includes a plurality of stacked battery modules.

[0025] According to an embodiment of the present invention, a base is further included, and the battery module is arranged on the base.

[0026] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0027] According to the thermal management module for energy storage system provided by the embodiment of the first aspect of the utility model, the circulating medium is stored through the medium storage part and maintained within the specified temperature range, thereby ensuring the stable operation of the energy storage system. Under the action of the heat exchange part, the circulating medium can effectively flow to the target object for heat exchange, realize the precise temperature control of the energy storage system, thereby improving the efficiency and safety of the energy storage system. The setting of the fire department enables the circulating medium to be quickly driven to flow to the target object when a fire occurs, so as to realize the rapid extinguishing of the fire source. This design not only improves the safety of the energy storage system, but also reduces losses when a fire occurs, and ensures the safety of personnel and property. The thermal management module integrates thermal management, heat exchange and fire fighting functions, realizes the diversification and integration of functions, simplifies the structure of the thermal management module, reduces the manufacturing cost, and also facilitates the maintenance and upgrading of the system. By sharing the same circulating medium by the heat exchange part and the fire fighting part, the dependence on traditional coolants or fire extinguishing agents can be reduced, and the risk of environmental pollution is reduced. At the same time, by accurately controlling the temperature and flow direction of the circulating medium, energy waste can be reduced and the energy efficiency of the energy storage system can be improved.

[0028] Furthermore, according to the energy storage system provided by the embodiment of the second aspect of the utility model, by combining the battery module and the above-mentioned thermal management module, since the heat exchange part fluid is connected between the medium storage part and the battery module, the circulating medium can accurately flow to the battery module under the control of the thermal management module to achieve effective heat exchange with the battery module. This can not only maintain the battery module within the optimal operating temperature range, improve its performance and life, but also prevent safety accidents caused by overheating of the battery module. The fire protection part of the thermal management module is connected to the medium storage part, so that when there is a risk of fire in the battery module, the circulating medium can quickly flow to the battery module for fire extinguishing. This rapid response mechanism greatly reduces the possibility of fire, and can quickly control the fire and reduce losses when a fire occurs.

[0029] 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

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic structural diagram of a first thermal management module for an energy storage system provided by an embodiment of the utility model;

[0032] Figure 2 is a schematic structural diagram of a second thermal management module for an energy storage system provided by an embodiment of the utility model;

[0033] Figure 3 is a schematic structural diagram of a third thermal management module for an energy storage system provided by an embodiment of the utility model;

[0034] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0035] Figure 5 It is a structural diagram of a sealing membrane and an overflow hole provided in an embodiment of the utility model;

[0036] Figure 6 is a schematic three-dimensional diagram of an energy storage system provided by an embodiment of the utility model;

[0037] Figure 7 is a schematic side view of an energy storage system provided by an embodiment of the utility model;

[0038] Figure 8 It is a schematic structural diagram of a battery module and a base provided in an embodiment of the utility model;

[0039] Fig. 9 It is a schematic diagram of the arrangement of battery module pipelines and explosion-proof valves provided in an embodiment of the utility model;

[0040] Fig.10 It is a working logic diagram of the heating element provided in the embodiment of the utility model.

[0041] Reference numerals:

[0042] 300, medium storage unit; 302, heat exchange unit; 304, first pipeline; 306, fire-fighting pipeline; 308, first flow control element; 310, fire-fighting pump; 311, second pipeline; 312, second flow control element; 314, heating element; 316, control unit; 318, base; 320, battery module; 321, box; 322, nylon pipe; 324, explosion-proof valve; 326, battery cell; 328, sealing membrane; 330, overflow hole. DETAILED DESCRIPTION

[0043] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0044] like Figures 1 to 5 As shown, the first embodiment of the utility model provides a thermal management module for an energy storage system, comprising:

[0045] The medium storage unit 300 is used to store the circulating medium and to maintain the circulating medium within a specified temperature range;

[0046] A heat exchange unit 302, the heat exchange unit 302 is connected to the medium storage unit 300 through a first pipeline 304, and the heat exchange unit 302 is suitable for driving the circulating medium to flow to the target object through the first pipeline 304, so that the circulating medium and the target object exchange heat;

[0047] The fire fighting unit is adapted to enable the circulating medium in the medium storage unit 300 to contact the target object in case of a fire, so as to extinguish the fire of the target object.

[0048] According to the thermal management module for energy storage system provided by the embodiment of the first aspect of the utility model, the circulating medium is stored through the medium storage part and maintained within the specified temperature range, thereby ensuring the stable operation of the energy storage system. Under the action of the heat exchange part, the circulating medium can effectively flow to the target object for heat exchange, realize the precise temperature control of the energy storage system, thereby improving the efficiency and safety of the energy storage system. The setting of the fire department makes it possible to quickly ensure that the circulating medium contacts the target object on fire when a fire occurs, so as to realize the rapid extinguishing of the fire source. This design not only improves the safety of the energy storage system, but also reduces losses and ensures the safety of personnel and property when a fire occurs. The thermal management module for energy storage system integrates thermal management, heat exchange and fire fighting functions, realizing the diversification and integration of functions. This design simplifies the structure of the thermal management module for energy storage system, reduces the manufacturing cost, and also facilitates the maintenance and upgrading of the system. By sharing the same circulating medium with the heat exchange part and the fire fighting part, the dependence on traditional coolants or fire extinguishing agents can be reduced, and the risk of environmental pollution can be reduced. At the same time, by accurately controlling the temperature and flow direction of the circulating medium, energy waste can be reduced and the energy efficiency of the energy storage system can be improved.

[0049] Please continue to see Figures 1 to 5 The medium storage unit 300 is the core component of the thermal management module, and its main function is to store the circulating medium. The circulating medium can be a liquid or other substance suitable for heat exchange and fire extinguishing.

[0050] In an embodiment of the utility model, the circulating medium is water. In some other embodiments, the circulating medium may also be deionized water, ethylene glycol aqueous solution, etc. Taking the case where the circulating medium is water as an example, the medium storage unit 300 may be a water reservoir. In this case, the water reservoir may be built underground directly below the energy storage system and pre-buried in the foundation. Thus, by being pre-buried in the foundation, the water reservoir may have a natural thermal insulation effect, which is more conducive to storing cold or heat of water in the water reservoir. Moreover, by pre-burying the water reservoir in the foundation, no additional space on the ground is occupied. Of course, the water reservoir may also be set at any position. For example, the water reservoir may be set on one side of the energy storage system, or multiple water reservoirs may be set centrally. No specific limitation is made here.

[0051] In addition, in order to achieve the purpose of energy saving, the water in the water reservoir can be heated or cooled during the off-peak period to store heat or cold in the water to achieve energy storage. During the peak period, water is pumped into the target object through the heat exchange unit 302 to achieve heat management of the target object. Through such an arrangement, it is possible to avoid the heat exchange unit 302 always being in a high-load operating state, which is conducive to achieving low-energy operation of the heat exchange unit 302. It can be understood that since cold or heat can be stored in the circulating medium during the off-peak period, during the peak period, there is no need to operate the heat exchange unit 302 at high power all the time, and the heat exchange with the target object can be completed through the cold or heat of the circulating medium.

[0052] Moreover, in a low temperature environment (such as autumn and winter), the circulating medium in the first pipeline 304 can be heated by the heat generated by the discharge of the energy storage system during the day, and the circulating medium can be stored in the water reservoir through the heat exchange unit 302 for insulation. At night, the circulating medium in the water reservoir is fed back to the energy storage system for heating, thereby achieving the effect of reducing energy consumption.

[0053] Therefore, in the embodiment of the utility model, the heat exchange part 302 is a power unit in the thermal management module, and the fluid of the heat exchange part 302 is connected between the medium storage part 300 and the target object. The heat exchange part 302 can be a component such as a water chiller and a water pump. Taking the water chiller as an example, when the water chiller starts working, it can drive the circulating medium from the medium storage part 300 to the target object and pump the circulating medium after completing the heat exchange with the target object back to the medium storage part 300. By adjusting the working state of the heat exchange part 302, the flow rate and flow rate of the circulating medium can be controlled to meet the thermal management requirements in different scenarios. In addition, the water chiller can also perform functions such as heating, cooling, and pumping on the circulating medium according to actual needs. Correspondingly, a compressor, a condenser, a refrigerant pipeline, etc. are integrated in the water chiller.

[0054] It is understandable that when the temperature of the target object needs to be adjusted, the heat exchange unit 302 is started to drive the circulating medium to flow to the target object. The circulating medium exchanges heat with the target object during the flow process, absorbs or releases heat, thereby cooling or heating the target object. This heat exchange method is efficient and uniform, and can quickly increase or decrease the temperature of the target object to meet the needs of various application scenarios.

[0055] In addition to the heat exchange function, the thermal management module also has the ability to extinguish fires. When a fire occurs in a target object, the fire department can be quickly activated so that the circulating medium can quickly contact the target object to extinguish the fire. After the circulating medium contacts the target object, it suppresses the spread of the fire through physical or chemical effects to achieve the effect of extinguishing the fire. This design enables the thermal management module to provide effective fire extinguishing measures in emergency situations while ensuring the normal operation of the equipment.

[0056] In summary, the thermal management module can realize efficient heat exchange and fire extinguishing functions for the target object. At the same time, the thermal management module can also be flexibly configured and adjusted according to actual needs to adapt to the thermal management needs in different scenarios.

[0057] According to an embodiment of the present invention, the heat exchange portion 302 is adapted to be in fluid communication between the medium storage portion 300 and the target object via a first pipeline 304 .

[0058] The first pipeline 304 serves as a channel for the circulating medium to flow, ensuring that the circulating medium can flow smoothly between the medium storage unit 300 and the target object. This arrangement makes the flow of the circulating medium more efficient and controllable.

[0059] Driven by the heat exchange unit 302, the circulating medium flows in the first pipeline 304, exchanges heat with or contacts the target object to complete the fire extinguishing. This flow mode can be adjusted according to actual needs, for example, by changing the speed or power of the heat exchange unit 302 to control the flow rate and flow velocity of the circulating medium, thereby achieving precise control of the temperature of the target object.

[0060] In addition, the first pipeline 304 is also designed with safety and reliability in mind. The first pipeline 304 is made of corrosion-resistant and high-temperature-resistant materials, and can withstand the pressure and temperature changes that may occur during the flow of the circulating medium. At the same time, each connection position of the first pipeline 304 is also sealed to prevent leakage of the circulating medium.

[0061] The circulating medium used by the fire fighting unit is the same as the circulating medium used by the heat exchange unit 302 , and both are from the medium storage unit 300 . Thus, the structure of the thermal management module for the energy storage system can be simplified, and the use and maintenance costs can be reduced.

[0062] In the embodiment of the utility model, the circulating medium can come into contact with the target object in at least the following several different forms to extinguish the fire of the target object.

[0063] Implementation method 1:

[0064] In this implementation, the fire department can be directly connected to the medium storage unit 300 through the first pipeline 304. The fire department is a fire pump, which can be connected to the first pipeline 304. The fire pump can directly drive the circulating medium to flow to the target object through the first pipeline 304.

[0065] Among them, the fire-fighting unit of the thermal management module for the energy storage system is connected to the medium storage unit 300 through the first pipeline 304. This design enables the fire-fighting unit to quickly and effectively drive the circulating medium to flow to the target object through the first pipeline 304 in the event of a fire or other emergency situation at the target object. In the process of flowing to the target object, the circulating medium can quickly control or extinguish the fire by contacting or covering the fire source. This design not only improves the safety of the energy storage system, enabling it to respond quickly and reduce losses when a fire occurs, but also reflects the integration and efficiency of the energy storage system design. By utilizing the existing first pipeline 304 for the transmission of the fire-extinguishing medium, additional pipeline design and installation are avoided, the system structure is simplified, the manufacturing cost is reduced, and the reliability of the system is also improved.

[0066] In addition, since the fire protection part and the heat exchange part 302 share the medium storage part 300, the structure of the thermal management module for the energy storage system is effectively simplified.

[0067] Implementation method 2:

[0068] In this implementation, the fire department includes a fire pipeline 306 and a first flow control component 308 . The fire pipeline 306 is connected between the liquid inlet section of the first pipeline 304 and the target object. The first flow control component 308 is disposed on the fire pipeline 306 .

[0069] like Figure 1 As shown, in the direction from the medium storage unit 300 to the target object, a fire protection pipeline 306 is connected in parallel to the first pipeline 304. This parallel design allows the circulating medium to flow mainly through the first pipeline 304 under normal circumstances to achieve a heat exchange function with the target object. In an emergency, such as when a fire occurs in the target object, the state of the first flow control element 308 can be adjusted to allow more or all of the circulating medium to flow into the fire protection pipeline 306.

[0070] The design of the fire fighting pipeline 306 takes into account the special needs of fire fighting, such as a larger flow rate or a higher pressure may be required to quickly put out a fire. Therefore, the fire fighting pipeline 306 can be configured to have a larger pipe diameter, or a booster device may be arranged on the fire fighting pipeline 306.

[0071] The first flow control element 308 is disposed between the fire fighting pipeline 306 and the first pipeline 304, and is used to control the flow distribution of the circulating medium between the fire fighting pipeline 306 and the first pipeline 304. For example, the first flow control element 308 may be a three-way valve, and when only heat exchange between the circulating medium and the target object is required, the first pipeline 304 and the target object are connected to each other; when fire extinguishing is required, the fire fighting pipeline 306 and the target object are connected to each other.

[0072] This implementation method enables the thermal management module to maintain its daily thermal management function while also having the ability to quickly respond to firefighting needs. In an emergency, the state of the firefighting pipeline 306 and the first flow control element 308 can be quickly adjusted so that the circulating medium flows to the target object through the firefighting pipeline 306 to achieve rapid fire extinguishing. This flexibility and efficiency make the thermal management module more reliable and practical in dealing with complex and changing application scenarios.

[0073] Implementation method three:

[0074] In this implementation, the fire department includes a fire pump 310, a second pipeline 311 and a second flow control element 312. The fire pump 310 is suitable for fluid communication between the medium storage unit 300 and the target object through the second pipeline 311. The second flow control element 312 is arranged on the second pipeline and located between the fire pump 310 and the target object.

[0075] like Figure 2 As shown, by introducing a fire pump 310, a second pipeline 311 and setting a second flow control element 312, the function of the thermal management module is made more comprehensive and flexible. Among them, the second pipeline 311 can be used exclusively for fire fighting, and similarly, the fire pump 310 can be used exclusively for fire fighting.

[0076] The fire pump 310 is fluidically connected between the medium storage unit 300 and the target object through the second pipeline 311, providing another flow path for the circulation medium.

[0077] By setting the second flow control member 312 on the second pipeline 311, the flow of the circulating medium in the second pipeline 311 can be more accurately controlled, thereby achieving accurate control of the temperature of the target object or more efficient fire extinguishing. This setting method enables the thermal management module to flexibly adjust the intensity and method of heat exchange and fire extinguishing according to different application scenarios and requirements.

[0078] In addition, it should be noted that in this implementation, the coexistence of the heat exchange unit 302 and the fire pump 310 enables the thermal management module to have higher reliability and redundancy when dealing with complex situations. For example, when the heat exchange unit 302 fails or its performance degrades, the fire pump 310 can take over or supplement the function of the heat exchange unit 302 to ensure that the thermal management module can continue to work stably.

[0079] Thus, by introducing the fire pump 310 and the second pipeline 311 and setting the second flow control element 312, the thermal management module further improves the flexibility, reliability and adaptability of the thermal management module while maintaining the original functions, so that the thermal management module can better meet the thermal management requirements in different application scenarios and provide strong support for the safe operation and performance optimization of the equipment.

[0080] In addition, if Figure 5 As shown, in order to prevent the first flow control member 308 in the second arrangement and the second flow control member 312 in the third arrangement from leaking, and to prevent the circulating medium from entering the target object and causing damage to the target object, when the first flow control member 308 and the second flow control member 312 leak, the above function can be achieved by setting the sealing film 328.

[0081] Specifically, in the second setting mode, a sealing film 328 is provided on the fire-fighting pipe 306 between the first flow control component 308 and the target object, and an overflow hole 330 is opened on the fire-fighting pipe 306 between the sealing film and the first flow control component 308 .

[0082] By such arrangement, when the first flow control member 308 leaks, the water in the fire fighting pipe 306 will not enter the target object due to the obstruction of the sealing film 328. Moreover, the water in the fire fighting pipe 306 will be discharged through the overflow hole 330. When the fire fighting pipe 306 needs to be opened, the water pressure in the fire fighting pipe 306 increases, and the sealing film 328 can be broken and then enter the target object to extinguish the fire.

[0083] Similarly, in the third arrangement, a sealing film 328 is provided on the second pipeline 311 between the second flow control member 312 and the target object, and an overflow hole 330 is opened on the second pipeline 311 between the sealing film and the second flow control member 312 .

[0084] When the second flow control member 312 leaks, the water in the second pipeline 311 will not enter the target object due to the obstruction of the sealing film 328. In addition, the water in the second pipeline 311 will be discharged through the overflow hole 330. When the second pipeline 311 needs to be opened, the water pressure in the second pipeline 311 increases, and the sealing film 328 can be broken and then enter the target object to extinguish the fire.

[0085] In addition, it should be noted that no matter which form is adopted, the overflow hole 330 must be set on the segment of the corresponding pipeline located outside the target object.

[0086] Implementation method 4:

[0087] In this implementation, the fire department includes a heater 314, which is disposed on the segmented pipeline corresponding to the first pipeline 304 and the target object. When the temperature of the target object is abnormal, the heater 314 is suitable for melting the segmented pipeline to allow the circulating medium to flow to the target object.

[0088] like Figure 3 and Figure 4 As shown, the heating element 314 is arranged on the segmented pipeline. It should be noted that the segmented pipeline mentioned here refers to the pipeline at the position corresponding to the target object on the first pipeline 304. Generally speaking, the target object is mostly provided with a shell structure such as a shell that accommodates the target object. Correspondingly, the segmented pipeline can be the part of the first pipeline 304 that extends into the shell. Under normal circumstances, the heating element 314 is in an inactive state and will not have any effect on the first pipeline 304 or the circulating medium. When the temperature of the target object is abnormal, such as when the temperature is too high or there is a risk of fire, the heating element 314 will respond quickly and start. The heating element 314 starts to generate enough heat to fuse the segmented pipeline. The segmented pipeline after the fuse allows the circulating medium originally flowing in the first pipeline 304 to flow out from the fuse position and flow directly to the target object. This setting method can quickly transport the circulating medium to the location where the target object is located to perform emergency cooling or fire extinguishing on the target object.

[0089] The fusing mechanism of the heating element 314 has the characteristics of rapid response and high efficiency. Compared with the traditional valve control or flow regulation, the fusing method is more direct and rapid, and can complete the change of the pipeline and the redistribution of the circulating medium in a very short time.

[0090] Therefore, by setting a heater 314 on the segmented pipeline corresponding to the first pipeline 304 and the target object, the thermal management module can respond quickly when the temperature of the target object is abnormal, ensuring that the circulating medium can flow quickly to the target object to achieve emergency cooling or fire extinguishing of the target object.

[0091] Specifically, as a specific implementation method, Fig. 9As shown, the battery module 320 is composed of two battery packs connected in series, and a water cooling plate is arranged at the bottom of the battery module 320. The water cooling plates of the two battery packs, the battery packs and the box 321 are connected by nylon pipes 322, and a heating element 314 is arranged on the nylon pipes 322. The side wall of the box 321 of the battery module 320 is arranged with an explosion-proof valve 324, and sealing measures (such as sealing pads) are arranged between the boxes 321 of different battery modules 320 to form a closed chamber to ensure the sealing of the stacked boxes 321 and prevent the fire-fighting medium from flowing into other normal battery modules 320.

[0092] As a form of control, Fig.10 As shown, a temperature sensor for detecting temperature is provided in the box 321 of the battery module 320, and the temperature of the battery cell 326 is fed back to the BMS (battery management system) in real time to perform thermal management of the battery cell 326. The utility model transmits the temperature of the battery cell 326 collected by the BMS to the EMS (electric energy management system), and Fig. 9 A heating element 314 is installed at any section of the nylon pipe 322 shown. When the temperature of a battery cell 326 rises abnormally and the system determines that there is a risk of fire or explosion, the EMS controls the heating element 314 to start heating, fuse the nylon pipe 322, and the medium flows into the closed chamber of the battery module 320, so as to achieve cooling and fire extinguishing of the entire module. At this time, the pressure in the module cavity continues to increase. After exceeding the pressure threshold of the explosion-proof valve 324, the explosion-proof valve 324 opens to release pressure, and the excess medium overflows from the explosion-proof valve 324 to avoid safety risks such as explosion.

[0093] According to an embodiment of the present invention, a control unit 316 is further included, and the control unit 316 is electrically connected to the heat exchange unit 302 .

[0094] In the embodiment of the utility model, the control unit 316 can be used to receive and process the signals required by various thermal management modules, and accurately control the heat exchange unit 302 according to the preset logic and algorithm. The electrical connection between the control unit 316 and the heat exchange unit 302 ensures the rapid transmission and accurate execution of information.

[0095] In actual applications, the control unit 316 can automatically adjust the working state of the heat exchange unit 302 according to the real-time data of the target object such as temperature and pressure, so as to achieve accurate control of the flow rate, flow velocity and flow direction of the circulating medium. This intelligent control not only improves the performance stability of the thermal management module, but also reduces the difficulty and error of manual operation.

[0096] For example, when the temperature of the target object exceeds a preset temperature, the control unit 316 can control the heat exchange unit 302 to start so that the circulating medium cools the target object. When the target object has a fire risk, the control unit 316 can control the heat exchange unit 302 to start so that the circulating medium extinguishes the fire of the target object.

[0097] Of course, in some other embodiments, the control unit 316 may also be electrically connected to components such as the fire pump 310 to achieve control over the above functional components.

[0098] A second aspect of the present invention provides an energy storage system, including a battery module 320 and the thermal management module as described above.

[0099] Further, the energy storage system includes a plurality of stacked battery modules 320, each battery module 320 includes a box 321, the box 321 has a closed chamber for accommodating a battery cell 326, and the target object is the battery cell 326;

[0100] The fire fighting unit is adapted to enable the circulating medium in the medium storage unit 300 to flow into the closed chamber and contact the battery cell 326 to extinguish the fire of the battery cell 326 in the event of a fire in the battery cell 326 .

[0101] The fire fighting part of the utility model is used for fire fighting in the enclosed space of a single-layer box, which does not affect the normal operation of other modules or other battery boxes, and reduces the secondary losses caused by fire fighting. According to the energy storage system provided by the second embodiment of the utility model, by combining the battery module and the above-mentioned thermal management module, since the heat exchange part fluid is connected between the medium storage part and the battery module, the circulating medium can accurately flow to the battery module under the control of the thermal management module to achieve effective heat exchange with the battery module. This can not only maintain the battery module within the optimal operating temperature range, improve its performance and life, but also prevent safety accidents caused by overheating of the battery module. The fire fighting part of the thermal management module is connected to the medium storage part, so that when there is a fire risk in the battery module 320, the circulating medium can quickly flow to the battery module 320 for fire extinguishing. This rapid response mechanism greatly reduces the possibility of fire, and can quickly control the fire when a fire occurs, reducing losses. The energy storage system also has the characteristics of intelligent management. By monitoring the temperature of the battery module 320 in real time and comparing it with the preset temperature, the system can automatically determine whether it is necessary to start the heat exchange part or the fire fighting part for thermal management. This intelligent management method improves the efficiency and accuracy of management and reduces the risk of human intervention.

[0102] See also Figures 6 to 8In the energy storage system provided in the embodiment of the second aspect of the utility model, the battery module 320 is used to store and release electrical energy, and the thermal management module is used to control the temperature of the battery module 320 to ensure that it operates within a safe temperature range.

[0103] The heat exchange part 302 in the thermal management module is fluidly connected between the medium storage part 300 and the battery module 320, which means that the circulating medium can circulate between the medium storage part 300 and the battery module 320 under the action of the heat exchange part 302, thereby realizing heat exchange with the battery cell 326 or fire extinguishing function of the battery module 320.

[0104] When the temperature of the battery module 320 is too high, the thermal management module can activate the heat exchange unit 302 to allow the circulating medium to flow through the battery cell 326, and remove the heat generated by the battery cell 326 by heat exchange, thereby reducing the temperature of the battery cell 326. Similarly, if an abnormal situation such as a fire occurs in the battery cell 326, the thermal management module can quickly activate the fire extinguishing function to allow the circulating medium to contact the battery cell 326 in the battery module 320 to complete the fire extinguishing operation.

[0105] In addition, the energy storage system can also adjust the flow rate and flow velocity of the circulating medium according to actual needs to achieve accurate control of the temperature of the battery module 320. At the same time, the thermal management module can also be intelligently controlled by the control unit 316 to automatically adjust the working state of the heat exchange unit 302 according to the real-time temperature change of the battery module 320 to achieve automatic thermal management.

[0106] According to an embodiment of the present invention, a base 318 is further included, and a battery module 320 is disposed on the base 318 .

[0107] See also Figure 8 The base 318 provides a stable support platform for the battery module 320, ensuring the safety and stability of the battery module 320. When there are multiple battery modules 320, the multiple battery modules 320 can be stacked along the height direction of the base 318 to form a battery pack, and the multiple battery packs can be arranged in parallel in a transverse direction along the width direction of the base 318.

[0108] By stacking the battery modules 320 in the height direction, the vertical space can be fully utilized to achieve a compact design of the energy storage system and improve space utilization. At the same time, this stacking method also helps to increase the total energy density of the energy storage system and meet application scenarios with higher energy requirements.

[0109] In addition, when the battery modules 320 are arranged along the height direction of the base 318, a single-box fire protection design can be performed according to the needs to achieve fire protection isolation when a single group of battery modules 320 is in thermal runaway, or pressure relief and explosion relief of a single group of battery modules 320. Moreover, when the battery modules 320 are arranged along the height direction of the base 318, for example, when there are 4 to 10 battery modules 320, each battery module 320 is interchangeable.

[0110] By stacking the battery modules 320 in the width direction to form a battery pack, and then arranging the battery packs in parallel in the transverse direction, the transverse dimension of the energy storage system can be expanded, making the energy storage system more stable. This design method is suitable for scenarios where a larger capacity is required but the space height is limited.

[0111] In summary, when different battery cells 326 are used and there is a need for boosting, a reasonable number of battery module 320 stacking layers can be selected to achieve different voltage requirements. It is also possible to stack multiple battery modules 320 vertically to form a battery pack according to different power requirements, and then expand multiple battery packs horizontally along the width direction of the base 318 and connect them in parallel to achieve rapid horizontal expansion to meet large-scale power requirements. In addition, in the event of a fault, each battery pack and each battery module 320 in each battery pack can be repaired and replaced, which is more flexible than the existing string-type energy storage technology.

[0112] In practical applications, the stacking method of the battery modules 320 can be flexibly selected according to specific space requirements, energy requirements, and safety performance requirements. Whether the battery modules 320 are stacked along the height direction of the base 318, or multiple battery modules 329 are stacked to form a battery pack, and then the battery packs are connected in parallel along the width direction of the base, or a combination of the two, the energy storage system can be optimized. Moreover, an independent heat exchange unit 302 can be used for each battery pack to achieve independent thermal management of each battery pack.

[0113] In addition, the design of the base 318 also needs to take into account factors such as heat dissipation, protection, and maintenance. For example, the base 318 can be made of a material with good thermal conductivity so that the heat generated by the battery module 320 can be dissipated in time. At the same time, the base 318 can also be provided with a protective structure to prevent external objects from causing damage to the battery module 320. In addition, in order to facilitate the maintenance and replacement of the battery module 320, the base 318 can also be designed to be easy to disassemble and assemble.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A thermal management module for an energy storage system, characterized in that: include: A medium storage unit (300), the medium storage unit (300) is used to store a circulating medium and to maintain the circulating medium within a specified temperature range; a heat exchange portion (302), the heat exchange portion (302) being in communication with the medium storage portion (300) via a first pipeline (304), the heat exchange portion (302) being adapted to drive the circulating medium to flow toward a target object via the first pipeline (304), so that the circulating medium and the target object perform heat exchange; A fire fighting unit is provided, wherein the fire fighting unit is adapted to enable the circulating medium in the medium storage unit (300) to contact the target object in case of a fire at the target object, so as to extinguish the fire at the target object.

2. The thermal management module for an energy storage system according to claim 1, characterized in that: The medium storage part (300) is a water reservoir, and the water reservoir can be arranged at any position.

3. The thermal management module for an energy storage system according to claim 2, characterized in that: The water reservoir is pre-buried in the foundation.

4. The thermal management module for an energy storage system according to claim 1, characterized in that: The fire fighting unit includes a fire fighting pipeline (306) and a first flow control element (308). The fire-fighting pipeline (306) is connected between the liquid inlet section of the first pipeline (304) and the target object, and the first flow control component (308) is arranged on the fire-fighting pipeline (306).

5. The thermal management module for an energy storage system according to claim 1, characterized in that: The fire fighting unit comprises a fire fighting pump (310), a second pipeline (311) and a second flow control element (312). The fire pump (310) is connected to the medium storage unit (300) via the second pipeline (311), the second pipeline (311) is connected to the target object, and the second flow control element (312) is arranged on the second pipeline and located between the fire pump (310) and the target object.

6. The thermal management module for an energy storage system according to claim 4 or 5, characterized in that: The fire-fighting unit comprises a fire-fighting pipeline (306), a sealing film (328) is arranged on the fire-fighting pipeline (306) between the first flow control member (308) and the target object, and an overflow hole (330) is opened on the fire-fighting pipeline (306) between the sealing film and the first flow control member (308); The fire fighting unit comprises a second pipeline (311), a sealing film (328) is arranged on the second pipeline (311) between a second flow control member (312) and the target object, and an overflow hole (330) is opened on the second pipeline (311) between the sealing film and the second flow control member (312).

7. The thermal management module for an energy storage system according to claim 1, characterized in that: The fire fighting unit includes a heating element (314), The heating element (314) is arranged on a segmented pipeline corresponding to the first pipeline (304) and the target object, and the heating element (314) is suitable for melting the segmented pipeline in the event of a fire at the target object, so that the circulating medium contacts the target object to extinguish the fire of the target object.

8. An energy storage system, characterized in that: The invention comprises a battery module (320) and a thermal management module according to any one of claims 1 to 7.

9. The energy storage system according to claim 8, characterized in that: The energy storage system comprises a plurality of stacked battery modules (320), each of the battery modules (320) comprising a box (321), the box (321) having a closed chamber for accommodating a battery cell (326), and the target object is the battery cell (326); The fire-fighting unit is adapted to enable the circulating medium in the medium storage unit (300) to flow into the closed chamber and contact the battery cell (326) to extinguish the fire of the battery cell (326) when a fire occurs in the battery cell (326).

10. The energy storage system according to claim 8, characterized in that: The energy storage system comprises a plurality of battery packs, wherein the plurality of battery packs are connected in parallel and arranged transversely to each other; The battery pack includes a plurality of battery modules (320) stacked together.

11. The energy storage system according to any one of claims 8 to 10, characterized in that: It also includes a base (318), and the battery module (320) is arranged on the base (318).

Images