Mobile energy storage container and mobile energy storage vehicle

Abstract

The utility model provides a mobile energy storage container and a mobile energy storage vehicle. The mobile energy storage container comprises a container body, a battery cluster and a pressure relief structure, the battery cluster is arranged in the box body and comprises a plurality of battery packs which are arranged at intervals; pressure release valves capable of releasing gas in the battery packs are arranged on the same sides of the battery packs; the pressure relief structure is arranged on the peripheral side of the battery cluster, the pressure relief structure comprises a cluster-level pressure relief pipe and a plurality of pack-level pressure relief pipes, the cluster-level pressure relief pipe extends in the arrangement direction of the battery packs, and the cluster-level pressure relief pipe penetrates out of the box body; the pack-level pressure relief pipe is arranged corresponding to the battery pack, and two ends of the pack-level pressure relief pipe are respectively communicated with the cluster-level pressure relief pipe and the pressure relief valve, so that gas in the battery pack can be discharged to the outside through the pressure relief valve, the pack-level pressure relief pipe and the cluster-level pressure relief pipe in sequence. When the battery pack is thermally out of control due to working short circuit or overload, the pressure relief valve is opened, and gas in the battery pack is released to the outer side of the mobile energy storage container through the pressure relief structure. Therefore, flammable gas in the energy storage unit is effectively prevented from being on fire and exploded under the high-temperature condition.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a mobile energy storage container. Background Art

[0002] Mobile energy storage containers are integrated energy storage systems developed to meet the needs of the mobile energy storage market. Mobile energy storage containers can be used to temporarily store and provide electricity to power residential areas, factories, research institutes, etc.

[0003] The mobile energy storage container includes a box body and multiple battery clusters installed in the box body. The battery cluster includes multiple battery packs, which are arranged at intervals in the vertical direction. Since the mobile energy storage container needs to move with the vehicle body and the battery power level needs to be maintained at a high level during the movement, it has a higher safety risk than fixed energy storage containers.

[0004] The battery pack is equipped with multiple energy storage units for storing and releasing electrical energy. During the operation of the energy storage unit, the energy storage unit may go into thermal runaway due to factors such as short circuit or overload. During the thermal runaway of the energy storage unit, gases such as hydrogen, carbon monoxide or various alkanes generated in the energy storage unit will be released into the battery pack. During the thermal runaway process, the gas in the battery pack will explode and cause dangers such as damage to the surrounding battery clusters and cause casualties to objects and personnel. Utility Model Content

[0005] The purpose of this application is to provide a mobile energy storage container that can effectively reduce the risk of battery pack explosion.

[0006] In order to solve the above technical problems, this application adopts the following technical solutions:

[0007] According to one aspect of the present application, the present application provides a mobile energy storage container, which includes: a box body, a battery cluster and a pressure relief structure; the battery cluster is arranged in the box body, the battery cluster includes a plurality of battery packs, and the plurality of battery packs are arranged at intervals; a pressure relief valve is provided on the same side of the battery pack, and the pressure relief valve can discharge the gas in the battery pack; the pressure relief structure is provided on the surrounding side of the battery cluster, the pressure relief structure includes a cluster-level pressure relief pipe and a plurality of pack-level pressure relief pipes, the cluster-level pressure relief pipe extends along the arrangement direction of the battery pack, one end of the cluster-level pressure relief pipe passes through the box body, and the other end of the cluster-level pressure relief pipe is closed; the pack-level pressure relief pipe is provided corresponding to the battery pack, one end of the pack-level pressure relief pipe is connected to the cluster-level pressure relief pipe, and the other end of the pack-level pressure relief pipe is connected to the pressure relief valve, so that the gas in the battery pack can be discharged to the outside through the pressure relief valve, the pack-level pressure relief pipe, and the cluster-level pressure relief pipe in sequence.

[0008] In some embodiments, the multiple battery packs in the same battery cluster are arranged at intervals in the up-down direction; the pressure relief valve is disposed on the peripheral side wall of the battery pack; the cluster-level pressure relief pipe extends in the up-down direction, and the upper end of the cluster-level pressure relief pipe passes through the box body upward for exhausting gas.

[0009] In some embodiments, there are a plurality of battery clusters, and the plurality of battery clusters are arranged at intervals within the box; and a plurality of pressure relief structures are provided corresponding to the plurality of battery clusters.

[0010] In some embodiments, the battery pack includes a shell and an energy storage module; the energy storage module is accommodated in the shell; the energy storage module includes multiple energy storage units, multiple first phase change heat absorption plates and multiple first thermal insulation sheets; multiple energy storage units are arranged at intervals; in the arrangement direction of the energy storage units, the first phase change heat absorption plates are respectively attached to the two side surfaces of the energy storage units; the first thermal insulation sheet is located between any two adjacent energy storage units, and the first thermal insulation sheet is attached to the facing sides of the two first phase change heat absorption plates.

[0011] In some embodiments, there are multiple energy storage modules, and the multiple energy storage modules are arranged at intervals in a direction perpendicular to the arrangement direction of the energy storage units; the battery pack also includes multiple second phase change heat absorption plates, and in the arrangement direction of the energy storage modules, the second phase change heat absorption plates are attached to the two sides of the energy storage modules.

[0012] In some embodiments, the battery pack further includes a second thermal insulation sheet, which is located between any two adjacent energy storage modules, extends along the arrangement direction of the energy storage units, and is adhered to the facing sides of the two second phase change heat absorption plates.

[0013] In some embodiments, the battery pack also includes a panel assembly, a plurality of first electrical connectors and two second electrical connectors, wherein the panel assembly is disposed on the shell; the first electrical connector is used to electrically connect the two energy storage modules; one end of the two second electrical connectors are respectively electrically connected to the panel assembly, and the other ends of the two second electrical connectors are respectively electrically connected to the energy storage modules, so that the plurality of energy storage modules can be connected in series in sequence.

[0014] In some embodiments, the battery pack also includes a pressure sampling line and a temperature sensor, wherein the pressure sampling line is electrically connected to the first electrical connector and the second electrical connector for obtaining voltage parameters of the energy storage module; the temperature sensor is bonded to the first electrical connector and / or the second electrical connector for detecting temperature parameters of the energy storage module.

[0015] In some embodiments, the energy storage module also includes a plurality of third electrical connectors and an insulating cover, wherein the third electrical connector is located on the outside of the energy storage unit, and extends along the arrangement direction of the energy storage unit, and the third electrical connector can electrically connect two adjacent energy storage units; the insulating cover extends along the arrangement direction of the energy storage unit, and the insulating cover is recessed with a receiving groove relative to the third electrical connector, and the insulating cover can be detachably covered on a plurality of the energy storage units so that the third electrical connector is accommodated in the receiving groove.

[0016] In some embodiments, the shell includes a liquid-cooled base plate and a top cover assembly; the detachable cover of the top cover assembly is arranged on the liquid-cooled base plate, and a working cavity is formed between the top cover assembly and the liquid-cooled base plate, and the working cavity is used to accommodate a plurality of the energy storage modules, and the plurality of the energy storage modules are abutted and connected to the liquid-cooled base plate; the battery pack also includes a fire extinguishing module, which is located in the working cavity and is arranged on the energy storage module, and the fire extinguishing module is arranged close to the pressure relief valve.

[0017] A mobile energy storage vehicle comprises: a vehicle body and any one of the above-mentioned mobile energy storage containers, wherein the mobile energy storage container is arranged on the vehicle body and the mobile energy storage container is detachably connected to the vehicle body.

[0018] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0019] In this application, when the battery pack is in thermal runaway due to short circuit or overload, the gas in the energy storage unit will be released into the battery pack. At this time, the pressure relief valve will open, and the gas in the battery pack will be released to the outside of the mobile energy storage container through the pack-level pressure relief pipe and the cluster-level pressure relief pipe. This can effectively reduce the risk of flammable gas in the energy storage unit catching fire or exploding when the temperature is too high, thereby effectively protecting the mobile energy storage container and the environment and personnel safety around the mobile energy storage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the energy storage rack, pressure relief structure and battery cluster of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the battery pack of the utility model.

[0022] Figure 3 It is a schematic structural diagram of the battery pack of the utility model after removing the top cover assembly.

[0023] Figure 4 It is a schematic diagram of the structural decomposition of the battery pack of the utility model.

[0024] Figure 5It is a schematic diagram of the structural decomposition of the energy storage module of the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 100, energy storage rack; 110, vertical beam; 120, bearing plate; 200, pressure relief structure; 210, cluster-level pressure relief pipe; 220, pack-level pressure relief pipe; 300, battery cluster; 400, battery pack; 410, shell; 411, liquid cooling bottom plate; 412, module stopper; 413, top cover assembly; 414, working chamber; 420, energy storage module; 421, energy storage unit; 422, first phase change heat absorption plate; 423, first heat insulation sheet; 4 24. Fixing belt; 425. Third electrical connector; 426. Insulating cover; 427. Accommodating groove; 431. Second phase change heat absorbing plate; 432. Second thermal insulation sheet; 433. First electrical connector; 434. Second electrical connector; 435. First pressing member; 436. Second pressing member; 440. Pressure relief valve; 450. Panel assembly; 451. Positive connector; 452. Negative connector; 453. Display screen; 460. Fire extinguishing module. DETAILED DESCRIPTION

[0027] Typical implementations that embody the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various changes in different implementations without departing from the scope of the present application, and the descriptions and illustrations therein are essentially used for illustrative purposes rather than for limiting the present application.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, 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 one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] For ease of description and understanding, the state of the mobile energy storage container in use is used as a reference, the height direction of the mobile energy storage container is used as the up-down direction in the following text, the length direction of the mobile energy storage container is used as the front-back direction in the following text, and the width direction of the mobile energy storage container is used as the left-right direction in the following text.

[0030] Figure 1 It is a structural schematic diagram of the energy storage rack, pressure relief structure and battery cluster of the utility model. Figure 2 It is a structural schematic diagram of the battery pack of the utility model.

[0031] See also Figure 1 and Figure 2 The present application provides a mobile energy storage container, which includes: a box body (not shown in the figure), a battery cluster 300 and a pressure relief structure 200; the battery cluster 300 is arranged in the box body, and the battery cluster 300 includes a plurality of battery packs 400, and the plurality of battery packs 400 are arranged at intervals; a pressure relief valve 440 is arranged on the same side of the battery packs 400, and the pressure relief valve 440 can discharge the gas in the battery packs 400; the pressure relief structure 200 is arranged on the peripheral side of the battery cluster 300, and the pressure relief structure 200 includes a cluster-level pressure relief pipe 210 and a plurality of packs The cluster-level pressure relief pipe 210 extends along the arrangement direction of the battery pack 400, one end of the cluster-level pressure relief pipe 210 passes through the box body, and the other end of the cluster-level pressure relief pipe 210 is closed; the pack-level pressure relief pipe 220 is arranged corresponding to the battery pack 400, one end of the pack-level pressure relief pipe 220 is connected to the cluster-level pressure relief pipe 210, and the other end of the pack-level pressure relief pipe 220 is connected to the pressure relief valve 440, so that the gas in the battery pack 400 can be discharged to the outside through the pressure relief valve 440, the pack-level pressure relief pipe 220, and the cluster-level pressure relief pipe 210 in sequence.

[0032] When the mobile energy storage container is working, the battery cluster 300 can absorb and store electric energy, and can also release electric energy to provide continuous electric energy for the external workplace, thereby ensuring stable and reliable operation of the workplace.

[0033] During the operation of the mobile energy storage container, when the battery pack 400 overheats due to a short circuit or overload, resulting in thermal runaway, the gas in the energy storage unit 421 will be released into the battery pack 400. The gas contains flammable and explosive hydrogen, carbon monoxide, and various alkanes.

[0034] At this time, the gas pressure in the battery pack 400 rises sharply, the pressure relief valve 440 will open, and the gas in the battery pack 400 will be discharged to the outside of the mobile energy storage container through the pressure relief valve 440, the pack-level pressure relief pipe 220, and the cluster-level pressure relief pipe 210 in sequence. This can effectively reduce the risk of flammable gas in the energy storage unit 421 catching fire or exploding when the temperature is too high, thereby effectively protecting the mobile energy storage container and the environment and personnel safety around the mobile energy storage container.

[0035] See also Figure 1 and Figure 2 In this embodiment, the box body is formed with an energy storage space (not shown in the figure) for accommodating the battery cluster 300 and the pressure relief structure 200. An energy storage rack 100 is provided in the energy storage space of the box body for placing multiple battery packs 400, so that the multiple battery packs 400 are arranged at intervals.

[0036] See also Figure 1 and Figure 2 The energy storage rack 100 includes a plurality of vertical beams 110 and a plurality of load-bearing plates 120. The vertical beams 110 extend in the up-down direction. The plurality of vertical beams 110 are respectively arranged on opposite sides of the load-bearing plates 120 to improve the safety of the energy storage rack 100. The load-bearing plates 120 extend in a plane perpendicular to the up-down direction. A plurality of load-bearing plates 120 are connected to the same vertical beam 110, and the plurality of load-bearing plates 120 are arranged at intervals in the up-down direction to respectively carry a plurality of battery packs 400, thereby improving the space utilization of the energy storage space.

[0037] In some embodiments, a plurality of vertical beams 110 are disposed on the peripheral side of the carrier plate 120 so that the battery pack 400 can be installed and removed from the carrier plate 120 .

[0038] In some embodiments, multiple vertical beams 110 are arranged in a group at intervals along the left-right direction, and multiple groups of vertical beams 110 are arranged at intervals along the front-back direction. Multiple bearing plates 120 are arranged between any two adjacent groups of vertical beams 110. This can effectively reduce the production cost of the energy storage rack 100 and improve the space utilization rate of the energy storage space.

[0039] See also Figure 1 and Figure 2 In this embodiment, the multiple battery packs 400 between any two groups of vertical beams 110 are a battery cluster 300. The multiple battery packs 400 in the same battery cluster 300 are arranged at intervals in the up-down direction. The pressure relief valve 440 is arranged on the peripheral side wall of the battery pack 400. The cluster-level pressure relief pipe 210 extends in the up-down direction. The upper end of the cluster-level pressure relief pipe 210 passes through the box body upward, and the lower end of the cluster-level pressure relief pipe 210 is closed for exhausting gas.

[0040] In some embodiments, a plurality of battery packs 400 arranged at intervals in the front-to-back direction constitute a battery cluster 300. The cluster-level pressure relief pipe 210 extends in the front-to-back direction. One end of the cluster-level pressure relief pipe 210 passes through the box body, and the other end of the cluster-level pressure relief pipe 210 is closed to discharge gas to the outside. In other embodiments, both ends of the cluster-level pressure relief pipe 210 pass through the box body.

[0041] In other embodiments, a plurality of battery packs 400 spaced apart in the left-right direction form a battery cluster 300 , and the cluster-level pressure relief pipe 210 extends in the left-right direction to discharge gas to the outside.

[0042] In some embodiments, there are multiple battery clusters 300, and the multiple battery clusters 300 are arranged at intervals in the box. The pressure relief structure 200 is provided in multiples corresponding to the multiple battery clusters 300. A cluster-level pressure relief pipe 210 and multiple pack-level pressure relief pipes 220 are provided around the multiple battery clusters 300 to discharge the gas in the multiple battery clusters 300 to the outside.

[0043] In other embodiments, a pressure relief structure 200 is provided corresponding to a plurality of battery clusters 300. A plurality of pack-level pressure relief pipes 220 are connected to the cluster-level pressure relief pipe 210. The plurality of pack-level pressure relief pipes 220 are provided corresponding to the battery packs 400 in the plurality of battery clusters 300, so that the gas in the plurality of battery packs 400 in the plurality of battery clusters 300 can be discharged into the cluster-level pressure relief pipe 210.

[0044] Figure 3 It is a schematic structural diagram of the battery pack of the utility model after removing the top cover assembly. Figure 4 It is a schematic diagram of the structural decomposition of the battery pack of the utility model.

[0045] See also Figures 2 to 4 In this embodiment, the battery pack 400 includes a housing 410 and an energy storage module 420. The energy storage module 420 is accommodated in the housing 410. The housing 410 is used to protect the energy storage module 420. The energy storage module 420 is used to store and release electrical energy.

[0046] The housing 410 includes a liquid cooling bottom plate 411 and a top cover assembly 413. The top cover assembly 413 is detachably mounted on the liquid cooling bottom plate 411, and a working chamber 414 is formed between the top cover assembly 413 and the liquid cooling bottom plate 411. The working chamber 414 is used to accommodate a plurality of energy storage modules 420, which are supported and connected to the liquid cooling bottom plate 411.

[0047] In some embodiments, a liquid cooling pipeline (not shown in the figure) is disposed in the liquid cooling base plate 411 , and the liquid cooling pipeline is used to communicate with an external refrigeration structure to perform liquid cooling on the structure in the working chamber 414 .

[0048] See also Figures 2 to 4 In this embodiment, a module stopper 412 is provided on one side of the liquid cooling base plate 411 facing the energy storage module 420. The module stopper 412 is provided on the peripheral side of the energy storage module 420 to enclose a rectangular structure, thereby limiting the movement of the energy storage module 420 in the horizontal direction.

[0049] In some embodiments, the module stopper 412 is detachably connected to the liquid cooling base plate 411. The module stopper 412 includes four modules, and the four module stoppers 412 are respectively disposed around the energy storage module 420.

[0050] See also Figures 2 to 4In this embodiment, the energy storage module 420 is accommodated in the working chamber 414. The energy storage module 420 includes a plurality of energy storage units 421, a plurality of first phase-change heat absorbing plates 422, and a plurality of first heat insulating sheets 423. The plurality of energy storage units 421 are arranged at intervals. In the arrangement direction of the energy storage units 421, the first phase-change heat absorbing plates 422 are respectively attached to the two side surfaces of the energy storage units 421. The first heat insulating sheet 423 is located between any two adjacent energy storage units 421, and the first heat insulating sheet 423 is attached to the facing side surfaces of the two first phase-change heat absorbing plates 422.

[0051] When the energy storage module 420 is working, the first phase change heat absorption plate 422 can fully absorb the heat generated by the energy storage unit 421 to prevent the energy storage unit 421 from overheating and causing thermal runaway, thereby catching fire or exploding. The first heat insulation sheet 423 can isolate the heat transfer between two adjacent energy storage units 421 to prevent the spread of thermal runaway, thereby improving the safety performance and reliability of the battery pack 400.

[0052] In some embodiments, the energy storage module 420 further includes a fixing belt 424, which is arranged around the circumference of the plurality of energy storage units 421 to bundle the plurality of energy storage units 421 to form the energy storage module 420. The fixing belt 424 can improve the structural strength of the energy storage module 420 and ensure the impact resistance of the battery pack 400.

[0053] In some embodiments, the energy storage module 420 is adhesively connected to the liquid cooling base plate 411 .

[0054] See also Figure 3 and Figure 4 In the present embodiment, there are a plurality of energy storage modules 420 , and the plurality of energy storage modules 420 are arranged at intervals in a direction perpendicular to the arrangement direction of the energy storage units 421 .

[0055] The battery pack 400 also includes a plurality of second phase change heat absorbing plates 431. In the arrangement direction of the energy storage module 420, the second phase change heat absorbing plates 431 are attached to the two sides of the energy storage module 420. The second phase change heat absorbing plates 431 can fully absorb the heat released by the energy storage unit 421 to prevent thermal runaway due to overheating in the energy storage module 420. In addition, the thermal runaway of the energy storage unit 421 in one energy storage module 420 can be prevented from spreading to another energy storage module 420, thereby improving the safety and reliability of the battery pack 400.

[0056] The battery pack 400 further includes a second heat insulating sheet 432, which is located between any two adjacent energy storage modules 420. The second heat insulating sheet 432 extends along the arrangement direction of the energy storage units 421, and is attached to the facing sides of the two second phase change heat absorbing plates 431.

[0057] The second heat insulating sheet 432 isolates the heat transfer between any two adjacent second phase change heat absorbing plates 431 to improve the reliability and stability of the battery pack 400 .

[0058] See also Figure 3 and Figure 4 In this embodiment, the battery pack 400 further includes a panel assembly 450, which is disposed on the housing 410. The panel assembly 450 is electrically connected to the energy storage module 420 to display the state of the energy storage module 420.

[0059] See also Figure 3 and Figure 4 In this embodiment, the battery pack 400 further includes a plurality of first electrical connectors 433 and two second electrical connectors 434. The first electrical connector 433 is used to electrically connect the two energy storage modules 420 to facilitate the use of the electrical energy in the energy storage modules 420. One end of the two second electrical connectors 434 is electrically connected to the panel assembly 450, and the other end of the two second electrical connectors 434 is electrically connected to the energy storage modules 420, so that the multiple energy storage modules 420 in the battery pack 400 can be connected in series in sequence.

[0060] In some embodiments, a positive connector 451 and a negative connector 452 are provided on the panel assembly 450, and the positive connector 451 and the negative connector 452 are respectively connected to the two second point connectors. The positive connector 451 and the negative connector 452 are used to electrically connect to external equipment to absorb external electrical energy or supply power to external equipment.

[0061] In other embodiments, the panel assembly 450 further includes a display screen 453 for displaying status parameters of the battery pack 400 .

[0062] Figure 5 It is a schematic diagram of the structural decomposition of the energy storage module of the utility model.

[0063] See also Figure 4 and Figure 5 In this embodiment, the energy storage module 420 further includes a plurality of third electrical connectors 425, which are located outside the energy storage unit 421, extend along the arrangement direction of the energy storage unit 421, and can electrically connect two adjacent energy storage units 421. The third electrical connector 425 can connect multiple energy storage units 421 in the same energy storage module 420 in series, thereby facilitating the use of the energy storage unit 421.

[0064] See also Figure 4 and Figure 5The energy storage module 420 further includes an insulating cover 426. The insulating cover 426 extends along the arrangement direction of the energy storage units 421. The insulating cover 426 is recessed with a receiving groove 427 relative to the third electrical connector 425. The insulating cover 426 can be detachably covered on the plurality of energy storage units 421 so that the third electrical connector 425 is received in the receiving groove 427. The insulating cover 426 can ensure the safety of the energy storage module 420 during use and prevent leakage of electrical energy in the energy storage unit 421.

[0065] See also Figure 3 and Figure 4 In this embodiment, the battery pack 400 also includes a first pressing member 435. In the arrangement direction of the plurality of energy storage modules 420, the first pressing member 435 is disposed between any two adjacent energy storage modules 420. The first pressing member 435 extends along the arrangement direction of the energy storage unit 421. The two sides of the pressing limiter are detachably connected to two adjacent insulating plates. The middle portion of the first pressing member 435 protrudes toward the liquid-cooled bottom plate 411 to press on the upper ends of the second phase change heat absorption plate 431 and the second heat insulation plate, thereby limiting the second phase change heat absorption plate 431 and the second heat insulation plate on the liquid-cooled bottom plate 411.

[0066] In some embodiments, the battery pack 400 further includes a second pressing member 436. In the arrangement direction of the plurality of energy storage modules 420, the second pressing member 436 is disposed on the outside of the outermost energy storage module 420. The second pressing member 436 extends along the arrangement direction of the energy storage unit 421. One side of the second pressing member 436 is detachably connected to the insulating plate. The second pressing member 436 protrudes toward the liquid-cooled bottom plate 411, and the second pressing member 436 can press the outermost second phase change heat absorption plate 431 onto the plurality of energy storage units 421, thereby ensuring the structural strength of the plurality of energy storage modules 420 in the battery pack 400.

[0067] See also Figure 3 and Figure 4 In this embodiment, the battery pack 400 further includes a fire extinguishing module 460, which is located in the working chamber 414 and is disposed on the energy storage module 420. The fire extinguishing module 460 can extinguish the energy storage module 420 when the energy storage module 420 thermally runs away and catches fire, thereby ensuring the safety of the battery pack 400.

[0068] In some embodiments, the fire extinguishing module 460 is disposed near the pressure relief valve 440. After the gas in the energy storage module 420 is released to the outside, the gas is released to the outside through the pressure relief valve 440. The oxygen in the outside can contact the gas in the energy storage module 420 through the pressure relief valve 440, which is easy to catch fire. The fire extinguishing module 460 disposed at the pressure relief valve 440 can promptly extinguish the flame in the battery pack 400, thereby ensuring the safety and reliability of the battery pack 400.

[0069] In this embodiment, the battery pack 400 further includes a pressure sampling line (not shown in the figure), which is electrically connected to the first electrical connector 433 and the second electrical connector 434 to obtain the voltage parameters of the energy storage module 420. In some embodiments, the pressure sampling line is electrically connected to the panel assembly 450 so that the panel assembly 450 can display the voltage parameter information of the energy storage module 420.

[0070] The battery pack 400 also includes a temperature sensor (not shown). The temperature sensor is bonded to the first electrical connector 433 and / or the second electrical connector 434 to detect the temperature parameters of the energy storage module 420. The temperature sensor can be electrically connected to the panel assembly 450 so that the panel assembly 450 can display the temperature parameter information in the energy storage module 420. In some embodiments, the temperature sensor can also be connected to the fire extinguishing module 460 so that the temperature sensor can trigger the fire extinguishing module 460, thereby protecting the safety of the battery pack 400.

[0071] See also Figures 1 to 5 In the present invention, when the mobile energy storage container is in use, the battery pack 400 can absorb external electrical energy and store electrical energy. The battery pack 400 can also transmit the stored electrical energy to external equipment to provide energy for the external equipment.

[0072] When the battery pack 400 is working, the energy storage unit 421 will generate heat. The first phase change heat absorption plate 422 and the second phase change heat absorption plate 431 can fully absorb the heat generated by the energy storage unit 421 during operation, thereby preventing the energy storage unit 421 from thermal runaway.

[0073] When the battery pack 400 is in thermal runaway due to overload or short circuit, the first phase change heat absorption plate 422 and the second phase change heat absorption plate can still fully absorb the heat generated by the energy storage unit 421. Moreover, after the first phase change heat absorption plate 422 and the second phase change heat absorption plate 431 absorb too much heat and change phase, the first heat insulation plate and the second heat insulation plate can prevent the thermal runaway from being transferred from the energy storage unit 421 to another energy storage unit 421, thereby preventing the spread of thermal runaway. This improves the safety and reliability of the battery pack 400 and protects people's lives and property.

[0074] When the gas in the energy storage unit 421 is released into the working chamber 414 due to thermal runaway, the pressure relief valve 440 is opened, so that the gas released in the energy storage unit 421 can be discharged to the outside through the pressure relief valve 440, the pack-level pressure relief pipe 220, and the cluster-level pressure relief pipe 210 in sequence, so as to further reduce the risk of fire and explosion of the battery pack 400 due to thermal runaway, and improve the safety and reliability of the mobile energy storage container.

[0075] In the present application, when the battery pack 400 is in thermal runaway due to a short circuit or overload, the gas in the energy storage unit 421 will be released into the battery pack 400. At this time, the pressure relief valve 440 will open, and the gas in the battery pack 400 will be released to the outside of the mobile energy storage container through the pack-level pressure relief pipe 220 and the cluster-level pressure relief pipe 210. This can effectively reduce the risk of flammable gas in the energy storage unit 421 catching fire or exploding when the temperature is too high, thereby effectively protecting the mobile energy storage container and the environment and personnel safety around the mobile energy storage container.

[0076] The utility model also provides a mobile energy storage vehicle, which comprises: a vehicle body and any one of the above mobile energy storage containers. The mobile energy storage container is arranged on the vehicle body. The mobile energy storage container is detachably connected to the vehicle body.

[0077] During normal use of the mobile energy storage vehicle, the mobile energy storage container is placed and connected to the vehicle body, and it generally moves and works as a whole, so as to improve the movement and working efficiency of the mobile energy storage vehicle.

[0078] Although the present application has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present application can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A mobile energy storage container, characterized in that: include: Box; A battery cluster is disposed in the box, the battery cluster includes a plurality of battery packs, and the plurality of battery packs are arranged at intervals; a pressure relief valve is disposed on the same side of the battery packs, and the pressure relief valve can release the gas in the battery packs; A pressure relief structure is arranged on the peripheral side of the battery cluster, the pressure relief structure includes a cluster-level pressure relief pipe and a plurality of pack-level pressure relief pipes, the cluster-level pressure relief pipe extends along the arrangement direction of the battery pack, one end of the cluster-level pressure relief pipe passes through the box body, and the other end of the cluster-level pressure relief pipe is closed; the pack-level pressure relief pipe is arranged corresponding to the battery pack, one end of the pack-level pressure relief pipe is connected to the cluster-level pressure relief pipe, and the other end of the pack-level pressure relief pipe is connected to the pressure relief valve, so that the gas in the battery pack can be discharged to the outside through the pressure relief valve, the pack-level pressure relief pipe, and the cluster-level pressure relief pipe in sequence.

2. The mobile energy storage container according to claim 1, characterized in that: The multiple battery packs in the same battery cluster are arranged at intervals in the up-down direction; the pressure relief valve is arranged on the peripheral side wall of the battery pack; the cluster-level pressure relief pipe extends in the up-down direction, and the upper end of the cluster-level pressure relief pipe passes through the box body upward for exhausting gas.

3. The mobile energy storage container according to claim 1, characterized in that: There are a plurality of battery clusters, which are arranged at intervals in the box; and a plurality of pressure relief structures are provided corresponding to the plurality of battery clusters.

4. The mobile energy storage container according to claim 1, characterized in that: The battery pack includes a shell and an energy storage module; the energy storage module is accommodated in the shell; the energy storage module includes a plurality of energy storage units, a plurality of first phase change heat absorption plates and a plurality of first heat insulation sheets; the plurality of energy storage units are arranged at intervals; in the arrangement direction of the energy storage units, the first phase change heat absorption plates are respectively attached to the two side surfaces of the energy storage units; the first heat insulation sheet is located between any two adjacent energy storage units, and the first heat insulation sheet is attached to the facing side surfaces of the two first phase change heat absorption plates.

5. The mobile energy storage container according to claim 4, characterized in that: There are multiple energy storage modules, and the multiple energy storage modules are arranged at intervals in a direction perpendicular to the arrangement direction of the energy storage units; The battery pack further includes a plurality of second phase-change heat absorption plates. In the arrangement direction of the energy storage modules, the second phase-change heat absorption plates are attached to two side surfaces of the energy storage modules.

6. The mobile energy storage container according to claim 5, characterized in that: The battery pack also includes a second thermal insulation sheet, which is located between any two adjacent energy storage modules, extends along the arrangement direction of the energy storage units, and is attached to the facing sides of the two second phase change heat absorption plates.

7. The mobile energy storage container according to claim 5, characterized in that: The battery pack also includes a panel assembly, multiple first electrical connectors and two second electrical connectors, the panel assembly is arranged on the shell; the first electrical connector is used to electrically connect the two energy storage modules; one end of the two second electrical connectors are respectively electrically connected to the panel assembly, and the other end of the two second electrical connectors are respectively electrically connected to the energy storage modules, so that the multiple energy storage modules can be connected in series in sequence.

8. The mobile energy storage container according to claim 7, characterized in that: The battery pack also includes a pressure sampling line and a temperature sensor. The pressure sampling line is electrically connected to the first electrical connector and the second electrical connector to obtain voltage parameters of the energy storage module. The temperature sensor is bonded to the first electrical connector and / or the second electrical connector to detect temperature parameters of the energy storage module.

9. The mobile energy storage container according to claim 4, characterized in that: The energy storage module further includes a plurality of third electrical connectors and an insulating cover, wherein the third electrical connectors are located outside the energy storage units, extend along the arrangement direction of the energy storage units, and can electrically connect two adjacent energy storage units; The insulating cover extends along the arrangement direction of the energy storage units, and is provided with a receiving groove relative to the third electrical connector. The insulating cover can be detachably covered on a plurality of the energy storage units so that the third electrical connector is received in the receiving groove.

10. The mobile energy storage container according to claim 4, characterized in that: The housing comprises a liquid-cooled bottom plate and a top cover assembly; a detachable cover of the top cover assembly is arranged on the liquid-cooled bottom plate, a working cavity is formed between the top cover assembly and the liquid-cooled bottom plate, the working cavity is used to accommodate a plurality of the energy storage modules, and the plurality of the energy storage modules are supported and connected to the liquid-cooled bottom plate; The battery pack further includes a fire extinguishing module, which is located in the working chamber and is arranged on the energy storage module. The fire extinguishing module is arranged close to the pressure relief valve.

11. A mobile energy storage vehicle, characterized in that: include: Vehicle body; The mobile energy storage container according to any one of claims 1 to 10 is arranged on the vehicle body, and the mobile energy storage container is detachably connected to the vehicle body.

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