Mobile energy storage device

Abstract

The invention discloses a mobile energy storage device, the mobile energy storage device comprises a shell assembly, an energy storage module, a barrier structure and a control assembly, the energy storage module is arranged in the shell assembly, the energy storage module comprises a plurality of battery cells arranged along a first preset direction, the top of each battery cell in a second preset direction is provided with an explosion-proof valve, and the explosion-proof valve is arranged in the shell assembly. The second preset direction intersects with the first preset direction, the blocking structure is arranged at the tops of the battery cells, extends in the first preset direction and is provided with a blocking channel and a plurality of avoiding holes, and the avoiding holes communicate with the blocking channel and correspond to the anti-explosion valves one to one; the control assembly is arranged in the shell assembly, the control assembly is located on the side portion, in the first preset direction or the third preset direction, of the energy storage module, the control assembly is electrically connected with the energy storage module, and the third preset direction intersects with the first preset direction and the second preset direction.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a mobile energy storage device. Background Art

[0002] Related Art In order to increase the capacity of a mobile energy storage device, a battery module consisting of multiple battery cells is usually provided inside the mobile energy storage device.

[0003] During battery module operation, the cells inevitably face the risk of thermal runaway. Thermal runaway generates a high-temperature, high-pressure heat flux, which can spread and diffuse to surrounding cells and other structures within the mobile energy storage device, causing more cells to experience thermal runaway. The greater the number of cells experiencing thermal runaway, the greater the chance of explosion in the mobile energy storage device, leading to a greater risk of safety accidents and a significant increase in potential safety hazards. Summary of the Invention

[0004] The embodiments of the present application disclose a mobile energy storage device that can reduce the probability of high-temperature and high-pressure heat generated by battery cells spreading to surrounding battery cells and other structures, thereby reducing the risk of explosion of the mobile energy storage device and improving the safety of the mobile energy storage device.

[0005] In order to achieve the above objectives, the present application discloses a mobile energy storage device, which includes:

[0006] Housing assembly;

[0007] An energy storage module, the energy storage module being disposed inside the housing assembly and comprising a plurality of battery cells arranged along a first preset direction, each battery cell being provided with an explosion-proof valve at a top thereof in a second preset direction, the second preset direction intersecting the first preset direction;

[0008] a barrier structure, the barrier structure being disposed on top of the plurality of battery cells and extending along the first preset direction, the barrier structure having a barrier channel and a plurality of avoidance holes, the plurality of avoidance holes being respectively connected to the barrier channels, and the plurality of avoidance holes being respectively disposed in one-to-one correspondence with the plurality of explosion-proof valves; and

[0009] A control component is arranged inside the shell component, and the control component is located on the side of the energy storage module in the first preset direction or the third preset direction. The control component is electrically connected to the energy storage module, and the third preset direction intersects with the first preset direction and the second preset direction.

[0010] In the mobile energy storage device provided in the embodiment of the present application, a blocking structure is provided on the side where the explosion-proof valves of the plurality of battery cells are located. The blocking structure has a blocking channel and a plurality of avoidance holes connected to the blocking channel. The plurality of avoidance holes are respectively provided in a one-to-one correspondence with the plurality of explosion-proof valves. The plurality of avoidance holes are respectively used to avoid the corresponding explosion-proof valves. When thermal runaway occurs in the battery cell, the explosion-proof valve opens, and the heat flow (e.g., electrolyte) ejected from the explosion-proof valve can enter the blocking channel through the avoidance hole, thereby preventing the heat flow ejected from the explosion-proof valve from spreading to other surrounding battery cells and other structures (e.g., a bar connected between two adjacent battery cells). This effectively avoids the expansion of thermal runaway, overcomes the defect that once a battery cell suffers thermal runaway, the heat flow ejected from the explosion-proof valve is easily conducted to other surrounding battery cells, thereby inducing thermal runaway in other battery cells, and avoids the problem that the heat flow ejected from the explosion-proof valve contaminates the bar, thereby causing a short circuit. This can greatly reduce the risk of explosion of the mobile energy storage device and improve the safety of the mobile energy storage device.

[0011] At the same time, the present application also locates the control component on the side of the energy storage module in the first preset direction or the third preset direction, so that the control component can be located above the barrier structure in certain states, such as charging and discharging states or transportation states, where the battery cell is prone to thermal runaway. Combined with the design of the barrier channel extending in the up and down directions, when the battery cell suffers from thermal runaway, the high-temperature material that is ejected from the explosion-proof valve and enters the barrier channel through the avoidance hole can flow downward along the inner wall surface of the barrier channel under the action of gravity, thereby preventing the high-temperature material in the barrier channel from spreading to the control component and contaminating the control component, thereby causing a short circuit in the control component.

[0012] As an optional implementation, in an embodiment of the present application, in the second preset direction, the barrier structure has an opening on a side facing away from the energy storage module.

[0013] The setting of the opening, on the one hand, allows the assembler to directly observe whether the avoidance hole and the explosion-proof valve are aligned through the opening when assembling the barrier structure, so as to ensure that after the barrier structure is assembled, the avoidance hole on the barrier structure is aligned with the explosion-proof valve, so as to avoid the barrier structure from blocking the explosion-proof valve, thereby avoiding the barrier structure from affecting the explosion-proof performance of the explosion-proof valve, and further ensuring that the battery cell can be explosion-proof and depressurized through the explosion-proof valve when thermal runaway occurs; on the other hand, an installation position, such as a mounting hole, can be directly reserved on the bottom wall of the barrier structure facing the energy storage module to achieve the installation and fixation of the barrier structure, without the need to additionally extend or bend the fixing portion outside the barrier channel to achieve the installation and fixation of the barrier structure. This can make the structure of the barrier structure relatively simple, which is conducive to reducing the cost of the barrier structure.

[0014] As an optional implementation, in an embodiment of the present application, the mobile energy storage device further includes a heat insulating member, which is disposed inside the housing assembly and covers the opening of the barrier structure.

[0015] By covering the openings of the barrier structure with thermal insulation, when a battery cell experiences thermal runaway and sprays high-temperature substances through the explosion-proof valve, the sprayed high-temperature substances will be directly sprayed onto the thermal insulation through the avoidance holes, blocking channels, and openings, which can effectively block the high temperature and prevent heat from being transferred to the outer shell assembly, thereby reducing the chance of the outer shell assembly being deformed by heat.

[0016] As an optional embodiment, in an embodiment of the present application, a support portion is provided on the inner wall surface of the blocking channel in the second preset direction, and the support portion protrudes from the opening and is located outside the blocking channel to abut against the thermal insulation member so that there is a distance between the thermal insulation member and the blocking structure.

[0017] By arranging a support portion on the inner wall surface of the barrier channel facing the opening, it is possible not only to provide a position for fixing the thermal insulation component, but also to support the thermal insulation component so that a distance can be formed between the thermal insulation component and the barrier structure to prevent the thermal insulation component from completely closing or sealing the opening of the barrier structure, thereby reducing the accumulation of high-temperature materials ejected from the explosion-proof valve during thermal runaway of the battery cell in the barrier channel, thereby forming a local high-pressure point, which is beneficial to reducing the probability of explosion of the mobile energy storage device.

[0018] As an optional implementation, in an embodiment of the present application, the mobile energy storage device has a first state and a second state, the first state being defined as a state in which the bottom of the mobile energy storage device is placed on a placement surface in the first preset direction, and the second state being defined as a state in which the side of the mobile energy storage device is placed on the placement surface in the second preset direction;

[0019] The mobile energy storage device further comprises a support track located inside the housing assembly, wherein the support track is arranged at the bottom of the housing assembly in the first preset direction;

[0020] The plurality of battery cells rest against the support rail in the first preset direction, the bottom of the blocking structure in the first preset direction has a channel opening connected to the blocking channel, and the bottom of the blocking structure extends along the first preset direction to the support rail, so that the channel opening is located between the support rail and the housing assembly in the second preset direction.

[0021] It should be noted that the first state is usually a state in which the battery cell is prone to thermal runaway, such as a charging and discharging state or a transportation state. When the mobile energy storage device is in the first state, the bottom of the mobile energy storage device in the first preset direction is placed on the placement surface, and the multiple battery cells are arranged in the up and down directions. The explosion-proof valve on the top of the battery cell is not upward toward the top of the mobile energy storage device, but forward, backward, left or right toward the side of the mobile energy storage device. At this time, the barrier structure is located on the side of the mobile energy storage device in the front-to-back direction or the left-to-right direction, and the bottom of the barrier structure in the up and down direction (i.e., the first preset direction) has a channel opening, and the bottom of the barrier structure extends downward to the support rail, so that the channel opening is located between the support rail and the shell assembly in the second preset direction. Therefore, when the explosion-proof valve of the battery cell explodes and sprays high-temperature substances (such as electrolyte), the high-temperature substances will be sprayed into the blocking channel and, under the action of gravity, will flow downward along the wall surface of the blocking channel to the receiving space formed between the shell assembly and the support rail. For example, the high-temperature substances will be sprayed onto the thermal insulation component and, under the action of gravity, will flow downward along the surface surface of the thermal insulation component to the receiving space formed between the shell assembly and the support rail, thereby preventing the high-temperature substances from accumulating in the blocking channel and thus preventing the high-temperature substances from blocking other unexploded explosion-proof valves through the avoidance holes and affecting the explosion-proof performance of other unexploded explosion-proof valves. In addition, the support rail can also prevent the high-temperature substances from spreading to the bottom of the battery cell, preventing it from affecting other battery cells that have not experienced thermal runaway.

[0022] As an optional embodiment, in an embodiment of the present application, the blocking structure has a side wall extending along the first preset direction, and the side wall is provided with a wire binding hole connected to the blocking channel, and the wire binding hole is used for allowing a binding member to pass through to fix the internal wiring of the shell assembly.

[0023] This can facilitate the straightening of the internal wiring of the housing assembly and prevent the internal wiring of the housing assembly from being entangled with each other, thereby facilitating the inspection and maintenance of the internal wiring of the housing assembly.

[0024] As an optional implementation, in an embodiment of the present application, the energy storage module further includes an end plate, the end plate abuts against the battery cell, and the barrier structure is connected and fixed to the end plate.

[0025] In this way, the end plate can be reused, that is, the end plate can be used, for example, to fix multiple battery cells into a whole with a strap, so that multiple battery cells can be assembled inside the shell assembly at one time, thereby improving the assembly efficiency of the energy storage module; it can also provide an installation position for the installation and fixation of the barrier structure, for installing and fixing the barrier structure, without the need to set up additional fixings to install the fixed barrier structure, thereby reducing the number of components of the mobile energy storage device and reducing the cost of the mobile energy storage device.

[0026] As an optional embodiment, in an embodiment of the present application, the housing assembly includes a shell and a cover that are separately provided, the shell having a first side portion and a second side portion that are opposite to each other, the first side portion being provided with a mounting opening, the cover being connected to the shell and sealing the mounting opening;

[0027] The mobile energy storage device further includes a plurality of limiting rails located in the housing, wherein the plurality of limiting rails are all arranged on the second side portion, and at least two of the limiting rails are spaced apart along the first preset direction;

[0028] In the first preset direction, the bottoms of the plurality of battery cells are limited between the two limiting rails.

[0029] In this way, when assembling multiple battery cells into the interior of the shell, at least two limit rails arranged at intervals along the first preset direction can be used to roughly circle the specific positions of the multiple battery cells in the shell, which can play a certain positioning role, thereby facilitating the rapid assembly of multiple battery cells to the target position, avoiding misalignment and affecting subsequent assembly (for example, a misplaced installed energy storage module may cause insufficient space inside the shell, resulting in other energy storage modules being unable to be assembled and needing to be returned to the warehouse for reassembly), thereby improving assembly efficiency and solving the problem of the inconvenience of assembling multiple energy storage modules.

[0030] As an optional implementation, in an embodiment of the present application, the energy storage module further includes an end plate, and the end plate abuts against the battery cell;

[0031] In the second preset direction, in the direction from the top of the battery cell to the bottom of the battery cell, the bottom of the battery cell protrudes from the end plate, so that the multiple battery cells are located between the two limiting rails, and the end plate and the limiting rails abut and are fixed to each other.

[0032] In this way, when the energy storage module is assembled from the installation opening to the interior of the shell, the abutment between the end plate and the limiting track can be utilized to limit the position of the energy storage module inside the shell, which can serve as a guide for the assembly of the energy storage module, and avoid the energy storage module being excessively placed into the shell, which would cause the battery cell to collide with the shell, thereby protecting the battery cell from damage. At the same time, because the end plate is not only abutted against the limiting track but also fixed to the limiting track, the limiting track is utilized to reserve an installation position for the installation and fixation of the energy storage module, thereby achieving the installation and fixation of the energy storage module, without the need to set up an additional fixing part inside the shell to achieve the installation and fixation of the energy storage module. This can make the structure of the shell relatively simple, thereby helping to reduce the cost of the shell assembly.

[0033] As an optional implementation, in an embodiment of the present application, the mobile energy storage device has a first state and a second state, the first state being defined as a state in which the bottom of the mobile energy storage device is placed on a placement surface in the first preset direction, and the second state being defined as a state in which the side of the mobile energy storage device is placed on the placement surface in the second preset direction;

[0034] The size of the housing in the second preset direction is smaller than the size of the housing in the first preset direction, and the first side portion and the second side portion are two opposite sides of the housing in the first preset direction;

[0035] The mobile energy storage device also includes a support rail located inside the shell, the support rail is arranged on the first side, and is spaced apart from at least one limiting rail at the bottom of the shell along the first preset direction, and in the first preset direction, the support rail abuts against the end plate.

[0036] It should be noted that the first state is usually a state in which the battery cell is prone to thermal runaway, such as a charging and discharging state or a transportation state, and the second state is usually a state in which the mobile energy storage device is assembled or stored. Since the size of the shell in the second preset direction is smaller than the size of the shell in the first preset direction, when the mobile energy storage device is in the second state, the side of the mobile energy storage device in the second preset direction is placed on the placement surface, that is, the second side of the shell in the second preset direction is placed on the placement surface, which is equivalent to placing the large surface of the shell on the placement surface. Therefore, when assembling and storing the mobile energy storage device, the contact area between the shell and the placement surface can be relatively large, so that the shell can be placed more stably on the placement surface, which is convenient for the subsequent assembly of the mobile energy storage device; it can also shorten the path for the battery cell to be pushed into the shell, thereby helping to improve assembly efficiency.

[0037] In addition, since when the mobile energy storage device is in the first state, the bottom of the mobile energy storage device in the first preset direction is placed on the placement surface, by arranging a support rail on the first side of the shell, and the support rail and at least one limiting rail are arranged at intervals at the bottom of the shell in the first preset direction, when the mobile energy storage device is in the first state, the support rail can be used to abut against the end plate in the first preset direction to support the battery cell, thereby avoiding the battery cell being suspended and causing the battery cell to shake during charging and discharging, thereby reducing the situation where the connection between the battery cell and the control component is disconnected and causes a circuit breaker.

[0038] As an optional implementation, in an embodiment of the present application, the mobile energy storage device has a first state and a second state, the first state being defined as a state in which the bottom of the mobile energy storage device is placed on a placement surface in the first preset direction, and the second state being defined as a state in which the side of the mobile energy storage device is placed on the placement surface in the second preset direction;

[0039] The housing assembly includes a shell and a cover that are separately arranged in the second preset direction, the shell having a mounting opening on a side portion in the second preset direction, and the cover is connected to the shell and covers the mounting opening;

[0040] The energy storage module further includes an end plate, the end plate abutting against the battery cell, and in the second preset direction, from the top of the battery cell to the bottom of the battery cell, the bottom of the battery cell protrudes from the end plate, so as to form an escape space between the battery cell and the end plate;

[0041] The mobile energy storage device further includes a support rail and a limiting rail located inside the shell, the support rail and the limiting rail being spaced apart from each other at the bottom of the shell along the first preset direction, and in the first preset direction, in a direction from the bottom of the mobile energy storage device to the top of the mobile energy storage device, the limiting rail protrudes from the support rail and is located in the avoidance space;

[0042] In the second preset direction, the end plate abuts against the limiting rail, and in the first preset direction, the end plate abuts against the supporting rail.

[0043] With such arrangement, in the process of assembling the energy storage module from the installation opening to the interior of the shell along the second preset direction, it is possible to constantly observe through the installation opening whether the end plate and the limiting rail are in contact with each other, and timely adjust the position of the energy storage module to ensure that the end plate can be attached to the support rail to assemble the energy storage module to the target position of the shell, that is, when assembling the energy storage module, the support rail can limit the path for placing the energy storage module into the interior of the shell, thereby quickly assembling the energy storage module to the target position of the shell and improving the assembly efficiency of the energy storage module; at the same time, the abutment effect of the end plate and the limiting rail can be utilized to limit the position of the energy storage module inside the shell, which can serve as an indicator for the assembly of the energy storage module, thereby avoiding the situation where the energy storage module is excessively placed in the shell, which causes the battery cell to collide with the shell, thereby protecting the battery cell from damage.

[0044] As an optional implementation manner, in an embodiment of the present application, in the first preset direction, there is a gap between the battery cell and the limiting track.

[0045] Such an arrangement can utilize the gap between the battery cell and the limiting track to provide expansion space for the battery cell, thereby allowing the battery cell to expand appropriately and ensuring that the battery cell can be used normally.

[0046] In addition, when the mobile energy storage device is in the first state, for example, when the mobile energy storage device is being charged and discharged, the battery cell will expand and expand to abut against the limiting rail. At this time, the end plate and the limiting rail jointly support the energy storage module. Thus, the limiting rail can share part of the force of the energy storage module on the end plate, thereby reducing the force of the energy storage module on the end plate, avoiding cracks and cracks in the end plate that affect its use, and thus helping to increase the service life of the end plate.

[0047] As an optional implementation, in an embodiment of the present application, the end plate is provided with a through hole extending along the second preset direction, the limiting rail is provided with a connecting hole, and the axial direction of the connecting hole extends along the second preset direction;

[0048] The mobile energy storage device further includes a connecting piece, which passes through the through hole and is connected to the connecting hole.

[0049] Such a design enables the end plate and the limiting rail to be fastened together by means of threads, thereby simplifying the assembly and disassembly of the two and making the connection between the two stable and reliable.

[0050] As an optional implementation, in an embodiment of the present application, the barrier structure extends to be connected and fixed to the support rail.

[0051] In this way, the support rail can be reused, that is, the support rail can be abutted against the end plate to support and limit the energy storage module; it can also provide an installation position for the installation and fixation of the barrier structure, which is used to install and fix the barrier structure. There is no need to set up additional fixing parts inside the shell to install and fix the barrier structure. This can make the structure of the shell relatively simple, which is conducive to reducing the cost of the shell assembly.

[0052] In addition, when the energy storage module is assembled into the interior of the shell from the installation opening along the width direction of the mobile energy storage device, after the mobile energy storage device is assembled, it is usually necessary to flip the mobile energy storage device approximately 90 degrees so that the mobile energy storage device is placed on the placement surface at its bottom in the height direction. By extending the barrier structure to connect and fix it with the support rail, the stability of the energy storage module in the shell can be further improved. During the process of flipping the mobile energy storage device approximately 90 degrees, it is possible to avoid shaking or tilting the energy storage module, which may cause disconnection between the battery cells and electronic components and cause a short circuit.

[0053] As an optional embodiment, in an embodiment of the present application, the energy storage module further includes a transfer bar, the first end of the transfer bar is connected to the pole of the battery cell, the second end of the transfer bar is bent in a direction away from the battery cell to form a first bar portion, the first bar portion is bent in a direction away from the first end of the transfer bar to form a second bar portion, the second bar portion is used to connect to the electronic components in the housing assembly, the second bar portion and the first end are arranged along the first preset direction, and there is a gap between the second bar portion and the battery cell in the second preset direction.

[0054] Since the side surface of the battery cell in the first preset direction is usually a large surface, and the expansion of the battery cell mainly occurs on the large surface of the battery cell, the adapter bar adopts the above-mentioned structural design, and the second bar portion and the first end are arranged along the first preset direction, and there is a gap between the second bar portion and the battery cell in the second preset direction. When the large surface of the battery cell expands and deforms, the first bar portion will adaptively deform to increase the size of the adapter bar in the first preset direction, so as to reduce the risk of the adapter bar being pulled off when the battery cell expands, and reduce the risk of the connection between the adapter bar and the electronic components being disconnected and causing a short circuit.

[0055] As an optional embodiment, in an embodiment of the present application, the energy storage module further includes an end plate and a support member. The end plate abuts the battery cell, the second tab portion extends to the end plate and is spaced apart from the end plate, and the support member is disposed between the second tab portion and the end plate to support and secure the second tab portion. This prevents the second tab portion from being suspended in the air, thereby preventing the second tab from swaying arbitrarily and causing a disconnection between the second tab portion and the electronic component.

[0056] As an optional embodiment, in an embodiment of the present application, the mobile energy storage device further includes a pulley mounted on the bottom of the housing in the height direction of the mobile energy storage device. Therefore, when the mobile energy storage device needs to be moved, the pulley can be used to slide the mobile energy storage device on the placement surface to move the mobile energy storage device without having to lift the mobile energy storage device off the placement surface. This facilitates the movement of the mobile energy storage device, especially for users with less strength, making it more convenient to move the mobile energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0058] Figure 1 This is a structural diagram of the first mobile energy storage device disclosed in the embodiment of the present application;

[0059] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the mobile energy storage device;

[0060] Figure 3 This is a structural diagram of the second mobile energy storage device disclosed in the embodiment of the present application;

[0061] Figure 4 yes Figure 3 Schematic diagram of the exploded structure of the mobile energy storage device;

[0062] Figure 5 This is a schematic diagram of the exploded structure of the third mobile energy storage device disclosed in the embodiments of the present application;

[0063] Figure 6 Schematic diagram of the exploded structure of the fourth mobile energy storage device disclosed in the embodiment of the present application;

[0064] Figure 7 yes Figure 6 A schematic structural diagram of a mobile energy storage device without a cover and a heat insulating member;

[0065] Figure 8 yes Figure 7 A local enlarged schematic diagram of M in FIG;

[0066] Figure 9 yes Figure 7 Schematic diagram of the exploded structure of the mobile energy storage device;

[0067] Figure 10 This is a schematic diagram of the exploded structure of the fifth mobile energy storage device disclosed in the embodiment of the present application;

[0068] Figure 11 The mobile energy storage device disclosed in the embodiment of this application is Figure 10 The cross-sectional view is obtained in the AA direction;

[0069] Figure 12 It is a structural diagram of the energy storage module, support rail and limit rail disclosed in the embodiment of this application;

[0070] Figure 13 yes Figure 12 Schematic diagram of the decomposition structure.

[0071] Description of main reference numerals

[0072] 100 - mobile energy storage device; 11 - housing assembly; 111 - housing; 111a - first side; 111b - second side; 1111 - mounting port; 1112 - escape space; 112 - cover; 12 - energy storage module; 121 - battery cell; 1211 - explosion-proof valve; 122 - end plate; 1221 - through hole; 123 - binding strap; 124 - adapter plate; 1241 - first end; 1242 -second end; 1242a-first bar portion; 1242b-second bar portion; 125-support member; 13-blocking structure; 131-blocking channel; 132-avoidance hole; 133-opening; 134-support portion; 135-channel opening; 136-wire binding hole; 14-thermal insulation member; 15-support rail; 16-control component; 17-limiting rail; 171-connecting hole; 18-pulley. DETAILED DESCRIPTION

[0073] To make the objectives, technical solutions, and advantages of this application more clearly understood, the following will provide a clear and complete description of the exemplary embodiments of this application in conjunction with the accompanying drawings. Obviously, the exemplary embodiments described are only a portion of the embodiments of this application, not all of them. That is, the specific embodiments described herein are merely intended to explain this application and are not intended to limit this application.

[0074] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of this application. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0075] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application.

[0076] As used in this application, the terms "first," "second," and the like may be used to describe various elements herein, but these elements are not limited by these terms. These terms are used solely to distinguish a first element from another element. For example, a first retaining rail may be referred to as a second retaining rail, and similarly, a second retaining rail may be referred to as a first retaining rail without departing from the scope of this application. The first retaining rail and the second retaining rail are both retaining rails, but they are not the same retaining rail.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more.

[0078] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0079] In the description of this application, it should be noted that the singular forms "a", "an", and "the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0080] In addition, the term "and / or" used in this specification includes any and all combinations of the relevant listed items. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. That is, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0081] Related Art In order to increase the capacity of a mobile energy storage device, a battery module consisting of multiple battery cells is usually provided inside the mobile energy storage device.

[0082] Since the battery cells will inevitably have the risk of thermal runaway during the operation of the battery module, in order to prevent thermal runaway of adjacent cells after a single cell of the battery module, the current protective measures taken are: adding thermal insulation and flame retardant materials between the large surfaces of the battery cells to block heat transfer between the large surfaces of the battery cells.

[0083] However, under the above-mentioned protective measures, when a battery cell experiences thermal runaway, the high-temperature material inside the battery cell will be ejected through the explosion-proof valve installed at the top of the battery cell, and the high-temperature material will be sprayed onto the top of the adjacent battery cell and the electrical connection components between the battery cells. The high-temperature material sprayed onto the top of the adjacent battery cell will heat the battery cell, and the high-temperature material group sprayed onto the electrical connection components will cause a short circuit. The above situations combined will cause the temperature of the adjacent battery cells to rise rapidly. When the temperature exceeds the thermal stability temperature of the battery cell, the battery cell will experience thermal runaway, which will cause the battery cells of the entire mobile energy storage device to experience thermal runaway, thereby greatly increasing the probability of explosion of the mobile energy storage device, making it more likely to cause safety accidents and greatly increasing safety hazards.

[0084] In view of this, an embodiment of the present application provides a mobile energy storage device that can reduce the probability of high-temperature and high-pressure heat generated by battery cells spreading to surrounding battery cells and other structures, thereby reducing the risk of explosion of the mobile energy storage device.

[0085] The following will be combined with the accompanying drawings of some embodiments of the present application to clearly and completely describe the technical solutions of some embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0086] See also Figure 1 The embodiment of the present application discloses a mobile energy storage device. A user can move the mobile energy storage device 100 by carrying the mobile energy storage device 100.

[0087] Optionally, the overall shape of the mobile energy storage device 100 may be a rectangle or a square, etc. Of course, in other embodiments, the overall shape of the mobile energy storage device 100 may also be other shapes, such as a circle.

[0088] In some embodiments, as Figures 2 to 4 As shown, the mobile energy storage device 100 provided in the embodiment of the present application includes a housing assembly 11 and an energy storage module 12. The energy storage module 12 is arranged inside the housing assembly 11, thereby preventing the energy storage module 12 from being exposed to the environment, thereby protecting the energy storage module 12.

[0089] In some embodiments, the housing component 11 may be made of an injection molded part made of plastic, silicone, rubber, or other materials.

[0090] In some embodiments, the energy storage module 12 may include multiple battery cells 121 arranged along a first predetermined direction, for example, two, three, four, five, six, or more. The multiple battery cells 121 may be connected in series or in parallel. Each battery cell 121 is provided with an explosion-proof valve 1211 at the top in the second predetermined direction. The multiple explosion-proof valves 1211 are arranged along the first predetermined direction.

[0091] In some embodiments, there may be one or more energy storage modules 12. When there are multiple energy storage modules 12, such as two, three, four, five, six or more, the multiple energy storage modules 12 are arranged along a third preset direction.

[0092] The first preset direction, the second preset direction and the third preset direction may be arranged to intersect each other in pairs, for example, the first preset direction, the second preset direction and the third preset direction may be arranged to be substantially perpendicular to each other in pairs. Figure 1 and Figure 2 In the embodiment, the first preset direction may be the front-back direction, the second preset direction may be the up-down direction, and the third preset direction may be the left-right direction; for example, in Figure 3 and Figure 4 In the embodiment, the first preset direction may be an up-down direction, the second preset direction may be a front-back direction, and the third preset direction may be a left-right direction.

[0093] An exemplary example is Figure 2 、 Figure 4 As shown, there are two energy storage modules 12, and each energy storage module 12 includes four battery cells 121, and eight battery cells 121 are arranged inside the housing component 11. Another exemplary embodiment, as Figure 5 As shown, there are two energy storage modules 12 , and each energy storage module 12 includes eight battery cells 121 , so sixteen battery cells 121 are disposed inside the housing assembly 11 .

[0094] In some embodiments, as Figure 1 and Figure 2 As shown, the first preset direction can be extended along the width direction of the mobile energy storage device 100, that is, along Figure 1 The second preset direction can be extended along the first preset direction, that is, along Figure 1 The third preset direction may extend along the length direction of the mobile energy storage device 100, that is, along Figure 1 In other embodiments, such as Figures 3 to 5 As shown, the first preset direction can be extended along the first preset direction, that is, along Figures 3 to 5The second preset direction can be set along the width direction of the mobile energy storage device 100, that is, along Figures 3 to 5 The third preset direction may extend along the length direction of the mobile energy storage device 100, that is, along Figures 3 and 4 Extending in the left and right directions.

[0095] In some embodiments, as Figure 5 and Figure 6 As shown, the mobile energy storage device 100 provided in the embodiment of the present application also includes a blocking structure 13, which is arranged on the top of the multiple battery cells 121, and the blocking channel 131 extends along the first preset direction. The blocking structure 13 has a blocking channel 131 and a plurality of avoidance holes 132, and the plurality of avoidance holes 132 are respectively connected to the blocking channel 131. The plurality of avoidance holes 132 are arranged at intervals along the first preset direction, and the plurality of avoidance holes 132 are respectively arranged in a one-to-one correspondence with the plurality of explosion-proof valves 1211.

[0096] That is, in the mobile energy storage device 100 provided in the embodiment of the present application, a barrier structure 13 is provided on the side where the explosion-proof valves 1211 of the plurality of battery cells 121 are located. The barrier structure 13 has a barrier channel 131 and a plurality of avoidance holes 132 connected to the barrier channel 131. The plurality of avoidance holes 132 are respectively provided in a one-to-one correspondence with the plurality of explosion-proof valves 1211. The plurality of avoidance holes 132 are respectively used to avoid the corresponding explosion-proof valves 1211, so that when thermal runaway occurs in the battery cell 121, the explosion-proof valve 1211 is opened, and the heat flow (such as electrolyte) ejected from the explosion-proof valve 1211 can enter the barrier channel 13 through the avoidance holes 132. 1, preventing the heat flow ejected from the explosion-proof valve 1211 from spreading to other surrounding battery cells 121 and other structures (for example, the bars connected between two adjacent battery cells 121), effectively avoiding the expansion of thermal runaway, overcoming the defect that once a battery cell 121 has thermal runaway, the heat flow ejected from the explosion-proof valve 1211 is easily transferred to other surrounding battery cells 121, thereby inducing thermal runaway in other battery cells 121, and avoiding the problem that the heat flow ejected from the explosion-proof valve 1211 contaminates the bars and causes a short circuit, thereby greatly reducing the risk of explosion of the mobile energy storage device 100 and improving the safety of the mobile energy storage device 100.

[0097] In some embodiments, as Figures 6 to 8 As shown, in the second preset direction, the barrier structure 13 has an opening 133 on the side facing away from the energy storage module 12 .

[0098] The setting of the opening 133, on the one hand, when assembling the barrier structure 13, the assembler can directly observe whether the avoidance hole 132 is aligned with the explosion-proof valve 1211 through the opening 133, so as to ensure that after the barrier structure 13 is assembled, the avoidance hole 132 on the barrier structure 13 is aligned with the explosion-proof valve 1211, so as to avoid the barrier structure 13 from blocking the explosion-proof valve 1211, thereby avoiding the barrier structure 13 from affecting the explosion-proof performance of the explosion-proof valve 1211, and further ensuring that the battery cell 121 can be explosion-proof and decompressed through the explosion-proof valve 1211 when thermal runaway occurs; on the other hand, an installation position, such as a mounting hole, can be directly reserved on the bottom wall of the barrier structure 13 facing the energy storage module 12, so as to realize the installation and fixation of the barrier structure 13, without the need to additionally extend or bend the fixing portion outside the barrier channel 131 to realize the installation and fixation of the barrier structure 13, thereby making the structure of the barrier structure 13 relatively simple, which is conducive to reducing the cost of the barrier structure 13.

[0099] In some embodiments, the mobile energy storage device 100 further includes a heat insulating member 14 . The heat insulating member 14 is disposed inside the housing assembly 11 , and the heat insulating member 14 covers the opening 133 of the barrier structure 13 .

[0100] By covering the thermal insulation part 14 at the opening 133 of the barrier structure 13, when a certain battery cell 121 experiences thermal runaway and sprays high-temperature material through the explosion-proof valve 1211, the sprayed high-temperature material will be directly sprayed onto the thermal insulation part 14 through the avoidance hole 132, the blocking channel 131, and the opening 133, which can effectively block the high temperature and prevent heat from being transferred to the outer shell component 11, thereby reducing the probability of the outer shell component 11 being deformed by heat.

[0101] For example, the thermal insulation member 14 may be a mica board or a metal plate coated with a thermal insulation coating. The thermal insulation coating may be mainly composed of a thermal insulation material, such as but not limited to glass fiber, asbestos, rock wool, silicate, aerogel felt, vacuum panel, etc.

[0102] In some embodiments, a support portion 134 is provided on the inner wall surface of the barrier channel 131 in the second predetermined direction. The support portion 134 protrudes from the opening 133 and is located outside the barrier channel 131 to support the thermal insulation member 14 so as to maintain a distance between the thermal insulation member 14 and the barrier structure 13. Specifically, the support portion 134 extends from the opening 133 outside the barrier channel 131 and is used to support the thermal insulation member 14 so as to maintain a distance between the thermal insulation member 14 and the barrier structure 13.

[0103] By providing a support portion 134 on the inner wall surface of the barrier channel 131 facing the opening 133, not only can a position be provided for fixing the thermal insulation member 14, but the thermal insulation member 14 can also be supported so that a distance can be formed between the thermal insulation member 14 and the barrier structure 13 to prevent the thermal insulation member 14 from completely closing or sealing the opening 133 of the barrier structure 13, thereby reducing the accumulation of high-temperature materials ejected from the explosion-proof valve 1211 in the barrier channel 131 when the battery cell 121 has thermal runaway, thereby forming a local high-pressure point, which is beneficial to reducing the probability of explosion of the mobile energy storage device 100.

[0104] Optionally, there may be multiple support parts 134, such as two, three, four or five, etc., and the multiple support parts 134 are arranged at intervals along the first preset direction, and the multiple support parts 134 are all used to support and fix the thermal insulation part 14, thereby being able to more stably support the thermal insulation part 14 and improve the installation stability of the thermal insulation part 14.

[0105] In some embodiments, the thermal insulation member 14 can be fixed to the support portion 134 by means of screws, bolts or other connectors, or the thermal insulation member 14 can be pasted on the support portion 134, or the thermal insulation member 14 can be fixed to the support portion 134 by snap-fitting.

[0106] It is understandable that in other embodiments, the thermal insulation member 14 may also be connected and fixed to the inner wall surface of the outer shell assembly 11 .

[0107] In some embodiments, the mobile energy storage device 100 may have a first state and a second state.

[0108] An exemplary example is Figure 1 and Figure 2 As shown, the first state is defined as a state in which the bottom of the mobile energy storage device 100 in the second preset direction is placed on the placement surface, and the second state is defined as a state in which the side of the mobile energy storage device 100 in the first preset direction is placed on the placement surface.

[0109] Another exemplary example is Figure 3 、 Figure 4 and Figure 5 As shown, the first state is defined as the bottom of the mobile energy storage device 100 in the first preset direction is placed on the placement surface, and the second state is defined as the side of the mobile energy storage device 100 in the second preset direction is placed on the placement surface.

[0110] It should be noted that the first state is usually a state where the battery cell 121 is prone to thermal runaway, such as a charging and discharging state or a transportation state, and the second state is usually a state where the mobile energy storage device 100 is being assembled or stored.

[0111] The placement surface may be a desktop, a countertop, or the ground.

[0112] In some embodiments, the mobile energy storage device 100 further includes a support rail 15 located inside the housing 111 . The support rail 15 is disposed at the bottom of the housing 111 in the first preset direction. The support rail 15 is used to support the energy storage module 12 .

[0113] In some embodiments, as Figures 6 to 8 As shown, the first state is defined as a state in which the bottom of the mobile energy storage device 100 in the first preset direction is placed on the placement surface, and the second state is defined as a state in which the side of the mobile energy storage device 100 in the second preset direction is placed on the placement surface; and the plurality of battery cells 121 are abutted against the support rail 15 in the first preset direction, and the bottom of the blocking structure 13 in the first preset direction has a channel opening 135 connected to the blocking channel 131, and the bottom of the blocking structure 13 extends along the first preset direction to the support rail 15, so that the channel opening 135 is located between the support rail 15 and the shell assembly 11 in the second preset direction.

[0114] Since the first state is typically a state in which the battery cells are prone to thermal runaway, such as a charging and discharging state or a transport state, when the mobile energy storage device 100 is in the first state, the bottom of the mobile energy storage device 100 in the first preset direction is placed on the placement surface, and the multiple battery cells 121 are arranged in the vertical direction. The explosion-proof valves 1211 on the tops of the battery cells 121 do not face upward toward the top of the mobile energy storage device 100, but face forward, backward, left, or right toward the side of the mobile energy storage device 100. At this time, the barrier structure 13 is located on the side of the mobile energy storage device 100 in the front-to-back direction or the left-to-right direction, and the bottom of the barrier structure 13 in the vertical direction (i.e., the first preset direction) has a channel opening 135, and the bottom of the barrier structure 13 extends downward to the support rail 15, so that the channel opening 135 is located between the support rail 15 and the housing assembly 11 in the second preset direction. Therefore, when the explosion-proof valve 1211 of the battery cell 121 explodes and ejects high-temperature material (e.g., electrolyte), the high-temperature material will be ejected into the blocking channel 131 and, under the action of gravity, will flow downward along the wall of the blocking channel 131 into the receiving space 15a formed between the housing assembly 11 and the support rail 15. For example, the high-temperature material will be ejected onto the thermal insulation 14 and, under the action of gravity, will flow downward along the surface of the thermal insulation 14 into the receiving space 15a formed between the housing assembly 11 and the support rail 15. This prevents the high-temperature material from accumulating in the blocking channel 131 and thus from clogging other undeployed explosion-proof valves 1211 through the avoidance hole 132, thereby affecting the explosion-proof performance of other undeployed explosion-proof valves 1211. Furthermore, the support rail 15 can prevent the high-temperature material from spreading to the bottom of the battery cell 121, preventing it from affecting other battery cells 121 that have not experienced thermal runaway.

[0115] In some embodiments, as Figure 6 and Figure 7 As shown, the mobile energy storage device 100 further includes a control component 16 , which is disposed inside the housing component 11 and is located on top of the energy storage module 12 in the first preset direction or the third preset direction.

[0116] In this way, the control component 16 can be located above the barrier structure 13 in certain states, such as charging and discharging states or transportation states, where the battery cell is prone to thermal runaway. Combined with the design of the barrier channel 131 extending in the up and down directions, when the battery cell 121 suffers from thermal runaway, the high-temperature material that is ejected from the explosion-proof valve 1211 and enters the barrier channel 131 through the avoidance hole 132 can flow downward along the inner wall surface of the barrier channel 131 under the action of gravity, thereby preventing the high-temperature material in the barrier channel 131 from spreading to the control component 16 and contaminating the control component 16, thereby causing the control component 16 to short-circuit.

[0117] The control component 16 is electrically connected to the energy storage module 12. For example, the control component 16 can be electrically connected to the energy storage module 12 via a wire.

[0118] Exemplarily, the control component 16 may include a circuit board and functional devices arranged on the circuit board, wherein the functional devices may include a bidirectional buck-boost converter, an inverter, etc., so that when the energy storage module 12 of the present application is discharging, the low-voltage DC (for example, 25.6V DC) output by the energy storage module 12 will first be boosted to 310V DC by the bidirectional buck-boost converter on the circuit board, and then inverted into 220V AC by the inverter on the circuit board to meet the charging requirements of the device to be charged and realize the discharge of the energy storage module 12; and when the energy storage module 12 of the present application is charging, the external input 220V AC will first be inverted into 310 DC by the inverter on the circuit board, and then stepped down to a voltage of 25.6V DC by the bidirectional buck-boost converter on the circuit board to meet the charging requirements of the energy storage module 12 and realize the charging of the energy storage module 12.

[0119] It is understandable that in actual use, the circuit board can be integrated with different functional electronic components according to the application scenario of the portable energy storage device to meet application requirements.

[0120] Furthermore, in addition to being provided with a bidirectional buck-boost converter and an inverter, the circuit board in the present application may also be integrated with a battery management system (BMS) so that the circuit board can serve as a key component for monitoring, controlling and protecting the energy storage module 12. For example, it can monitor and manage parameters such as the voltage, temperature, charging state and discharging state of the energy storage module 12, thereby avoiding dangerous situations such as overcharging, over-discharging, overcurrent and short circuit, ensuring the safe operation of the energy storage module 12 and improving the service life of the battery cell 121.

[0121] In some embodiments, as Figure 9 As shown, the barrier structure 13 has a sidewall extending along a first predetermined direction. The sidewall is provided with a wire binding hole 136 that communicates with the barrier channel 131. For example, the wire binding holes 136 may be multiple, such as two, three, four, five, six, or more, arranged along the first predetermined direction. The wire binding holes 136 are used to allow binding members to pass through to secure internal wiring of the housing assembly 11, such as the wires connecting the control assembly 16 and the energy storage module 12.

[0122] This can facilitate the straightening of the internal wiring of the housing assembly 11 and prevent the internal wiring of the housing assembly 11 from being entangled with each other, thereby facilitating the inspection and maintenance of the internal wiring of the housing assembly 11.

[0123] In some embodiments, the energy storage module 12 also includes an end plate 122, which abuts against the battery cell 121. For example, two end plates 122, and multiple battery cells 121 abut against the two end plates 122 to fix the multiple battery cells 121 into a whole. Therefore, during assembly, multiple battery cells 121 can be assembled inside the shell assembly 11 at one time, thereby improving the assembly efficiency of the energy storage module 12.

[0124] In some embodiments, the energy storage module 12 further includes a binding strap 123 , which is sleeved around the two end plates 122 and the plurality of battery cells 121 , so as to bundle the plurality of battery cells 121 and the two end plates 122 into a whole.

[0125] It is understandable that in other embodiments, a connector may be provided between the two end plates 122 , and the connector and the end plates 122 may be connected by means of threads or snaps to bundle the multiple battery cells 121 and the two end plates 122 into a whole.

[0126] In some embodiments, the two end plates 122 may be located on the side where the larger surface of the battery cell 121 is located. Since the battery cell 121 inevitably expands during the charging and discharging process, and the expansion deformation of the battery cell 121 mainly occurs on the larger surface side of the battery cell 121, that is, deformation mainly occurs on the larger surface side of the battery cell 121, when the battery cell 121 expands and deforms, it is mainly the larger surface of the battery cell 121 that is subjected to the compression force of the binding band 123. Placing the end plates 122 on the side where the larger surface of the battery cell 121 is located can prevent the compression force of the binding band 123 on the larger surface of the battery cell 121 from being concentrated in a certain position, thereby reducing damage to the battery cell 121 caused by the binding band 123.

[0127] In some embodiments, the barrier structure 13 is connected and fixed to the end plate 122. This allows the end plate 122 to be reused. That is, the end plate 122 can be used, for example, in conjunction with the strap 123 to fix multiple battery cells 121 into a whole, so that multiple battery cells 121 can be assembled inside the housing assembly 11 at one time, thereby improving the assembly efficiency of the energy storage module 12; it can also provide a mounting position for the installation and fixation of the barrier structure 13, for installing and fixing the barrier structure 13, without the need for additional fixings to install and fix the barrier structure 13. This can reduce the number of components of the mobile energy storage device 100 and reduce the cost of the mobile energy storage device 100.

[0128] For example, the barrier structure 13 and the end plate 122 may be fixed by screws or bolts.

[0129] In some embodiments, as Figure 8 and Figure 9 As shown, the large surface of the battery cell 121 is the side surface of the battery cell 121 in the first preset direction; the energy storage module 12 also includes a transfer bar 124, the first end 1241 of the transfer bar 124 is connected to the pole of the battery cell 121, and the second end 1242 of the transfer bar 124 is bent in a direction away from the battery cell 121 to form a first bar portion 1242a, and the first bar portion 1242a is bent in a direction away from the first end 1241 of the transfer bar 124 to form a second bar portion 1242b, and the second bar portion 1242b is used to connect with the electronic components in the housing assembly 11, and the second bar portion 1242b and the first end 1241 are arranged along the first preset direction, and there is a gap between the second bar portion 1242b and the battery cell 121 in the second preset direction.

[0130] Since the side surface of the battery cell 121 in the first preset direction is usually a large surface, and the expansion of the battery cell 121 mainly occurs on the large surface of the battery cell 121, the adapter bar 124 adopts the above-mentioned structural design, and the second bar portion 1242a and the first end 1241 are arranged along the first preset direction, and there is a gap between the second bar portion 1242b and the battery cell 121 in the second preset direction. When the large surface of the battery cell 121 expands and deforms, the first bar portion 1242a will adaptively deform to increase the size of the adapter bar 124 in the first preset direction, so as to reduce the risk of the adapter bar 124 being pulled off when the battery cell 121 expands, and reduce the connection between the adapter bar 124 and the electronic components to cause a short circuit.

[0131] In some embodiments, the energy storage module 12 further includes a support member 125. The second tab portion 1242b extends to the end plate 122 and is spaced apart from the end plate 122. The support member 125 is disposed between the second tab portion 1242b and the end plate 122 to support and secure the second tab portion 1242b. This prevents the second tab portion 1242b from being suspended in the air, thereby preventing the second tab portion 1242b from swaying freely and causing a disconnection between the second tab portion 1242b and the electronic components.

[0132] Optionally, the second tab portion 1242b can be fixed to the end plate 122 by means of screws, bolts or other connectors, or the second tab portion 1242b can be adhered to the end plate 122, or the second tab portion 1242b can be fixed to the end plate 122 by snap-fitting.

[0133] In some embodiments, as Figure 9 and Figure 10 As shown, the housing assembly 11 includes a shell 111 and a cover 112 which are separately arranged, wherein the shell 111 has a first side portion 111a and a second side portion 111b which are opposite to each other, and the first side portion 111a of the shell 111 is provided with an installation opening 1111, and the cover 112 is connected to the shell 111 and sealed on the installation opening 1111. During assembly, the energy storage module 12 can be installed from the installation opening 1111 to the interior of the shell 111.

[0134] In some embodiments, the mobile energy storage device 100 further includes a plurality of limiting rails 17 located within the shell 111, such as two, three, four, five, or six limiting rails 17, wherein the plurality of limiting rails 17 are all arranged on the second side 111b of the shell 111, and at least two limiting rails 17 are arranged at intervals along a first preset direction; the energy storage module 12 is installed from the mounting port 1111 to the interior of the shell 111, and in the first preset direction, the bottoms of the plurality of battery cells 121 are limited between the two limiting rails 17.

[0135] It needs to be explained that, when there are three or more limiting rails 17, the multiple limiting rails form two rows of limiting rails in the first preset direction, and each row of limiting rails includes at least one limiting rail 17. When a row of limiting rails includes multiple limiting rails 17, the multiple limiting rails 17 in a row of limiting rails are arranged along the third preset direction.

[0136] In the above design scheme, when assembling multiple battery cells 121 into the interior of the shell 111, at least two limiting rails 17 arranged at intervals along the first preset direction can be used to roughly circle the specific positions of the multiple battery cells 121 in the shell 111, which can play a certain positioning role, thereby facilitating the rapid assembly of the multiple battery cells 121 to the target position, avoiding misalignment and affecting subsequent assembly (for example, a misplaced installed energy storage module 12 may cause insufficient space inside the shell 111, resulting in other energy storage modules 12 being unable to be assembled and needing to be returned to the warehouse for reassembly), thereby improving assembly efficiency and solving the problem of the inconvenience of assembling multiple energy storage modules 12.

[0137] In some embodiments, in the second preset direction, from the top of the battery cell 121 to the bottom of the battery cell 121, the bottom of the battery cell 121 protrudes from the end plate 122, so that the multiple battery cells 121 are located between the two limiting rails 17, and the end plate 122 and the limiting rail 17 are abutted and fixed to each other.

[0138] In this way, when the energy storage module 12 is assembled into the interior of the shell 111 from the installation opening 1111, the abutment between the end plate 122 and the limiting track 17 can be used to limit the position of the energy storage module 12 inside the shell 111, which can serve as an indicator for the assembly of the energy storage module 12, avoiding the energy storage module 12 from being excessively placed into the shell 111, which would cause the battery cell 121 to collide with the shell 111, thereby protecting the battery cell 121 from damage. At the same time, because the end plate 122 not only abuts against the limiting track 17 but is also fixed to the limiting track 17, the limiting track 17 is used to reserve an installation position for the installation and fixation of the energy storage module 12, thereby achieving the installation and fixation of the energy storage module 12, without the need to set up an additional fixing part inside the shell 111 to achieve the installation and fixation of the energy storage module 12. This can make the structure of the shell 111 relatively simple, thereby helping to reduce the cost of the outer shell assembly 11.

[0139] In some embodiments, as Figure 10As shown, the dimensions of the housing 111 in the second preset direction are smaller than those of the housing 111 in the first preset direction. The first side portion 111a and the second side portion 111b are opposite sides of the housing 111 in the second preset direction. Therefore, the mounting opening 1111 is formed on the side of the housing 111 in the second preset direction, and the energy storage module 12 can be installed into the interior of the housing 111 through the mounting opening 1111 along the second preset direction. Furthermore, the mobile energy storage device 100 further includes a support rail 15 located within the housing 111. The support rail 15 is disposed on the first side portion 111a of the housing 111 and is spaced apart from at least one limiting rail 17 at the bottom of the housing 111 along the first preset direction. In the first preset direction, the support rail 15 abuts against the end plate 122.

[0140] Since the size of the shell 111 in the second preset direction is smaller than the size of the shell 111 in the first preset direction, when the mobile energy storage device 100 is in the second state, the side of the mobile energy storage device 100 in the second preset direction is placed on the placement surface, that is, the second side 111b of the shell 111 in the second preset direction is placed on the placement surface, which is equivalent to placing the large surface of the shell 111 on the placement surface. Therefore, when assembling and storing the mobile energy storage device 100, the contact area between the shell 111 and the placement surface can be relatively large, so that the shell 111 can be placed on the placement surface more stably, which facilitates the subsequent assembly of the mobile energy storage device 100; it can also shorten the path for the battery cell 121 to be pushed into the interior of the shell 111, thereby helping to improve assembly efficiency.

[0141] On the other hand, since when the mobile energy storage device 100 is in the first state, the bottom of the mobile energy storage device 100 in the first preset direction is placed on the placement surface, by providing a support rail 15 on the first side portion 111a of the housing 111, and the support rail 15 and at least one limiting rail 17 are spaced apart and arranged at the bottom of the housing 111 along the first preset direction, when the mobile energy storage device 100 is in the first state, for example, when the mobile energy storage device 100 is in the charging and discharging state, the support rail 15 can be used to abut against the end plate 122 in the first preset direction to support the battery cell 121, thereby preventing the battery cell 121 from being suspended and causing the battery cell 121 to shake during charging and discharging, thereby reducing the possibility of disconnection between the battery cell 121 and the control component 16, resulting in a short circuit. Moreover, since the area of ​​the bottom surface of the housing 111 in the first preset direction is smaller than the area of ​​the side surface of the second side portion 111b in the second preset direction, the mobile energy storage device 100 occupies a smaller area during charging and discharging, making it more convenient to use.

[0142] In some embodiments, as Figure 10 and Figure 11As shown, the housing 111 and the cover 112 are arranged along the second preset direction, the installation opening 1111 is formed on the side of the housing 111 in the second preset direction, and the energy storage module 12 is installed into the interior of the housing 111 from the installation opening 1111 along the second preset direction. In the second preset direction, from the top of the battery cell 121 to the bottom of the battery cell 121, for example Figure 10 and Figure 11 In the rearward direction, the bottom of the battery cell 121 protrudes from the end plate 122 to form an escape space 1112 between the battery cell 121 and the end plate 122; the mobile energy storage device 100 further includes a support rail 15 and a limit rail 17 located inside the shell 111, and the support rail 15 and the limit rail 17 are spaced apart and arranged at the bottom of the shell 111 along the first preset direction, and in the first preset direction, in a direction from the bottom of the mobile energy storage device 100 to the top of the mobile energy storage device 100, for example Figure 10 and Figure 11 In the upward direction, the limiting rail 17 protrudes from the supporting rail 15 and is located in the avoidance space 1112; moreover, in the second preset direction, the end plate 122 abuts against the limiting rail 17, and in the first preset direction, the end plate 122 abuts against the supporting rail 15.

[0143] With such a configuration, in the process of assembling the energy storage module 12 from the installation opening 1111 along the second preset direction into the interior of the shell 111, it is possible to constantly observe through the installation opening 1111 whether the end plate 122 and the limiting rail 17 are in contact with each other, and to timely adjust the position of the energy storage module 12 to ensure that the end plate 122 can be attached to the support rail 15 to assemble the energy storage module 12 to the target position of the shell 111, that is, when assembling the energy storage module 12, the support rail 15 can limit the energy storage module 12 from being placed into the interior of the shell 111. The energy storage module 12 can be quickly assembled to the target position of the shell 111 by the end plate 122 and the limiting track 17, thereby improving the assembly efficiency of the energy storage module 12; at the same time, the end plate 122 and the limiting track 17 can be used to abut against each other to limit the position of the energy storage module 12 inside the shell 111, which can serve as an indicator for the assembly of the energy storage module 12, thereby avoiding the energy storage module 12 from being excessively placed in the shell 111, which may cause the battery cell 121 to collide with the shell 111, thereby protecting the battery cell 121 from damage.

[0144] In some embodiments, the two end plates 122 are located on the side where the large surface of the battery cell 121 is located. In the first preset direction, there is a gap between the large surface of the battery cell 121 and the limiting rail 17.

[0145] Such a configuration can utilize the gap between the large surface of the battery cell 121 and the limiting track 17 to provide expansion space for the large surface of the battery cell 121, thereby allowing the large surface of the battery cell 121 to expand appropriately and ensuring that the battery cell 121 can be used normally.

[0146] In addition, when the mobile energy storage device 100 is in the first state, for example, when the mobile energy storage device 100 is charged and discharged, the large surface of the battery cell 121 will expand and expand to abut against the limiting rail 17. At this time, the end plate 122 and the limiting rail 17 jointly support the energy storage module 12, so that the limiting rail 17 can share part of the force of the energy storage module 12 on the end plate 122, thereby reducing the force of the energy storage module 12 on the end plate 122, avoiding cracks and cracks in the end plate 122 and affecting its use, which is beneficial to improving the service life of the end plate 122.

[0147] In some embodiments, the barrier structure 13 extends to connect and secure with the support rail 15. This allows the support rail 15 to be reused, that is, the support rail 15 can abut against the end plate 122 to support and limit the energy storage module 12; it can also provide a mounting position for the barrier structure 13, thereby eliminating the need for additional fixing portions within the housing 111 to secure the barrier structure 13. This simplifies the structure of the housing 111, thereby reducing the cost of the outer shell assembly 11.

[0148] In addition, when the energy storage module 12 is assembled into the interior of the shell 111 from the installation opening 1111 along the second preset direction, after the mobile energy storage device 100 is assembled, it is usually necessary to flip the mobile energy storage device 100 approximately 90° so that the mobile energy storage device 100 is placed on the placement surface at its bottom in the height direction. By extending the barrier structure 13 to connect and fix it with the support rail 15, the stability of the energy storage module 12 in the shell 111 can be further improved. During the process of flipping the mobile energy storage device 100 approximately 90°, it is possible to avoid shaking or tilting the energy storage module 12, which may cause the connection between the battery cell 121 and the electronic components to be disconnected, resulting in a short circuit.

[0149] For example, the barrier structure 13 and the end plate 122 may be fixed by screws or bolts.

[0150] In some embodiments, the end plate 122 and the limiting rail 17 may be fixed by means of connectors such as screws and bolts, or the end plate 122 and the limiting rail 17 may be fixed by means of snap fastening.

[0151] For example, Figure 12 and Figure 13As shown, the end plate 122 is provided with a through hole 1221 extending along the second preset direction, and the limiting track 17 is provided with a connecting hole 171, the axial direction of which extends along the second preset direction; the mobile energy storage device 100 also includes a connecting member (not shown), which extends through the through hole 1221 and is connected to the connecting hole. For example, the connecting member can be a threaded member such as a screw or bolt, and the connecting hole 171 can be a threaded hole. The connecting member extends through the through hole 1221 and is screwed into the connecting hole 171. This design enables the end plate 122 and the limiting track 17 to be connected by threaded fastening, thereby simplifying the assembly and disassembly of the two and making the connection between the two stable and reliable.

[0152] In some embodiments, the mobile energy storage device 100 further includes a pulley 18 , which is mounted on the bottom of the housing 111 in the first preset direction.

[0153] The provision of the pulley 18 allows the mobile energy storage device 100 to slide on the placement surface when it is necessary to move the mobile energy storage device 100, so as to move the mobile energy storage device 100 without having to lift the mobile energy storage device 100 off the placement surface. This facilitates the movement of the mobile energy storage device 100, and makes it more convenient for users with less strength to move the mobile energy storage device 100.

[0154] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0155] In addition, the above-described embodiments only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they should not be understood as limiting the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application. Therefore, the content of this specification should not be understood as limiting the present application, and the scope of protection of the present application should be based on the appended claims.

Claims

1. A mobile energy storage device, characterized in that: The mobile energy storage device (100) comprises: Housing assembly (11); An energy storage module (12), the energy storage module (12) being arranged inside the housing assembly (11), and comprising a plurality of battery cells (121) arranged along a first preset direction, each battery cell (121) being provided with an explosion-proof valve (1211) at the top in a second preset direction, the second preset direction intersecting the first preset direction; a barrier structure (13), the barrier structure (13) being arranged on top of the plurality of battery cells (121), and the barrier structure (13) extending along the first preset direction, the barrier structure (13) having a barrier channel (131) and a plurality of avoidance holes (132), the plurality of avoidance holes (132) being respectively connected to the barrier channel (131), and the plurality of avoidance holes (132) being respectively arranged in one-to-one correspondence with the plurality of explosion-proof valves (1211); and, A control component (16), the control component (16) being arranged inside the housing component (11), and the control component (16) being located on the side of the energy storage module (12) in the first preset direction or the third preset direction, the control component (16) being electrically connected to the energy storage module (12), and the third preset direction intersecting with both the first preset direction and the second preset direction.

2. The mobile energy storage device according to claim 1, characterized in that: In the second preset direction, the barrier structure (13) has an opening (133) on the side facing away from the energy storage module (12).

3. The mobile energy storage device according to claim 2, characterized in that: The mobile energy storage device (100) further includes a heat insulating member (14), the heat insulating member (14) being arranged inside the housing assembly (11), and the heat insulating member (14) covering the opening (133) of the barrier structure (13).

4. The mobile energy storage device according to claim 3, characterized in that: A support portion (134) is provided on the inner wall surface of the blocking channel (131) in the second preset direction. The support portion (134) protrudes from the opening (133) and is located outside the blocking channel (131) so as to abut against the thermal insulation member (14) so ​​as to provide a distance between the thermal insulation member (14) and the blocking structure (13).

5. The mobile energy storage device according to claim 1, characterized in that: The mobile energy storage device (100) has a first state and a second state, the first state being defined as a state in which the bottom of the mobile energy storage device (100) is placed on a placement surface in the first preset direction, and the second state being defined as a state in which the side of the mobile energy storage device (100) is placed on the placement surface in the second preset direction; The mobile energy storage device (100) further comprises a support track (15) located inside the housing assembly (11), wherein the support track (15) is arranged at the bottom of the housing assembly (11) in the first preset direction; The plurality of battery cells (121) abut against the support rail (15) in the first preset direction, the bottom of the barrier structure (13) in the first preset direction has a channel opening (135) communicating with the barrier channel (131), and the bottom of the barrier structure (13) extends to the support rail (15) along the first preset direction, so that the channel opening (135) is located between the support rail (15) and the housing assembly (11) in the second preset direction.

6. The mobile energy storage device according to claim 1, characterized in that: The barrier structure (13) has a side wall extending along the first preset direction, and the side wall is provided with a wire binding hole (136) connected to the barrier channel (131), and the wire binding hole (136) is used for allowing a binding member to pass through to fix the internal wiring of the housing component (11).

7. The mobile energy storage device according to claim 1, characterized in that: The energy storage module (12) further includes an end plate (122), the end plate (122) abuts against the battery core (121), and the barrier structure (13) is connected and fixed to the end plate (122).

8. The mobile energy storage device according to claim 1, characterized in that: The housing assembly (11) comprises a shell (111) and a cover (112) which are separately arranged. The shell (111) has a first side portion (111a) and a second side portion (111b) which are opposite to each other. The first side portion (111a) is provided with a mounting opening (1111). The cover (112) is connected to the shell (111), and the cover (112) covers the mounting opening (1111). The mobile energy storage device (100) further comprises a plurality of limiting rails (17) located in the housing (111), wherein the plurality of limiting rails (17) are all arranged on the second side portion (111b), and at least two of the limiting rails (17) are arranged at intervals along the first preset direction; In the first preset direction, the bottoms of the plurality of battery cells (121) are limited between the two limiting rails (17).

9. The mobile energy storage device according to claim 8, characterized in that: The energy storage module (12) further includes an end plate (122), wherein the end plate (122) abuts against the battery core (121); In the second preset direction, in a direction from the top of the battery cell (121) to the bottom of the battery cell (121), the bottom of the battery cell (121) protrudes from the end plate (122), so that the plurality of battery cells (121) are located between the two limiting rails (17), and the end plate (122) and the limiting rail (17) are in contact with and fixed to each other.

10. The mobile energy storage device according to claim 9, characterized in that: The mobile energy storage device (100) has a first state and a second state, the first state being defined as a state in which the bottom of the mobile energy storage device (100) is placed on a placement surface in the first preset direction, and the second state being defined as a state in which the side of the mobile energy storage device (100) is placed on the placement surface in the second preset direction; The size of the housing (111) in the second preset direction is smaller than the size of the housing (111) in the first preset direction, and the first side portion (111a) and the second side portion (111b) are two opposite sides of the housing (111) in the first preset direction; The mobile energy storage device (100) further comprises a support rail (15) located inside the housing (111); the support rail (15) is arranged on the first side portion (111a) and is spaced apart from at least one of the limiting rails (17) at the bottom of the housing (111) along the first preset direction; and in the first preset direction, the support rail (15) abuts against the end plate (122).

11. The mobile energy storage device according to claim 1, characterized in that: The mobile energy storage device (100) has a first state and a second state, the first state being defined as a state in which the bottom of the mobile energy storage device (100) is placed on a placement surface in the first preset direction, and the second state being defined as a state in which the side of the mobile energy storage device (100) is placed on the placement surface in the second preset direction; The housing assembly (11) comprises a shell (111) and a cover (112) which are separately arranged in the second preset direction; a mounting opening (1111) is provided on a side of the shell (111) in the second preset direction; and the cover (112) is connected to the shell (111) and covers the mounting opening (1111); The energy storage module (12) further comprises an end plate (122), the end plate (122) abutting against the battery cell (121), and in the second preset direction, in a direction from the top of the battery cell (121) to the bottom of the battery cell (121), the bottom of the battery cell (121) protrudes from the end plate (122), so as to form an escape space (1112) between the battery cell (121) and the end plate (122); The mobile energy storage device (100) further comprises a support track (15) and a limiting track (17) located inside the housing (111); the support track (15) and the limiting track (17) are arranged at intervals at the bottom of the housing (111) along the first preset direction; and in the first preset direction, in a direction from the bottom of the mobile energy storage device (100) to the top of the mobile energy storage device (100), the limiting track (17) protrudes from the support track (15) and is located in the avoidance space (1112); In the second preset direction, the end plate (122) abuts against the limiting track (17), and in the first preset direction, the end plate (122) abuts against the supporting track (15).

12. The mobile energy storage device according to any one of claims 9 to 11, characterized in that: In the first preset direction, there is a gap between the battery core (121) and the limiting track (17).

13. The mobile energy storage device according to any one of claims 9 to 11, characterized in that: The end plate (122) is provided with a through hole (1221) extending along the second preset direction, and the limiting track (17) is provided with a connecting hole (171), wherein the axial direction of the connecting hole (171) extends along the second preset direction; The mobile energy storage device (100) further comprises a connecting piece, which passes through the through hole (1221) and is connected to the connecting hole (171).

14. The mobile energy storage device according to any one of claims 9 to 11, characterized in that: The barrier structure (13) extends to be connected and fixed with the support track (15).

15. The mobile energy storage device according to any one of claims 1 to 11, characterized in that: The energy storage module (12) further comprises a transfer tab (124), wherein a first end (1241) of the transfer tab (124) is connected to a pole of the battery cell (121), and a second end (1242) of the transfer tab (124) is bent in a direction away from the battery cell (121) to form a first tab portion (1242a), and the first tab portion (1242a) is bent in a direction away from the first end (1241) of the transfer tab (124) to form a second tab portion (1242b), and the second tab portion (1242b) is used to connect to electronic components in the housing assembly (11), and the second tab portion (1242b) and the first end (1241) are arranged along the first preset direction, and a gap exists between the second tab portion (1242b) and the battery cell (121) in the second preset direction.

16. The mobile energy storage device according to claim 15, characterized in that: The energy storage module (12) further includes an end plate (122) and a support member (125), wherein the end plate (122) abuts against the battery cell (121), the second tab portion (1242b) extends to the end plate (122) and is spaced apart from the end plate (122), and the support member (125) is arranged between the second tab portion (1242b) and the end plate (122) to support and fix the second tab portion (1242b).

17. The mobile energy storage device according to any one of claims 1 to 11, characterized in that: The mobile energy storage device (100) further includes a pulley (18), and the pulley (18) is installed at the bottom of the housing (111) in the height direction of the mobile energy storage device (100).

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