Battery device and electric equipment

Abstract

The embodiment of the utility model provides a battery device and electric equipment. The battery device comprises a box body, at least two battery monomers and at least two one-way discharge parts, the box body is provided with a discharge channel and discharge holes communicated with the discharge channel, the at least two battery monomers are arranged in the box body, the battery monomers are provided with pressure relief mechanisms, the number of the discharge holes is at least two, and the pressure relief mechanisms and the discharge holes are arranged in a one-to-one correspondence manner. And the at least two one-way discharge parts are arranged in one-to-one correspondence with the discharge holes, and the one-way discharge parts are configured to allow discharge substances erupted by the pressure relief mechanism to enter the discharge channel through the discharge holes and prevent the discharge substances in the discharge channel from leaving the discharge channel through the discharge holes. In the battery device provided by the embodiment of the invention, the discharge channel discharge hole one-way discharge piece sprays the discharge substances to the discharge channel when one battery monomer has a thermal runaway problem, and the discharge substances in the discharge channel cannot leave the discharge channel through the discharge hole and diffuse to other battery monomers, so that the risk of thermal diffusion is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and in particular to a battery device and an electrical device. Background Art

[0002] The battery pack box is usually provided with an exhaust channel. When the battery cell experiences thermal runaway, high-temperature and high-pressure gas is discharged from the explosion-proof valve of the battery cell and enters the exhaust channel through the exhaust hole of the exhaust channel.

[0003] In related technologies, multiple battery cells are usually arranged in a battery pack, and correspondingly, multiple discharge holes are also arranged on the discharge channel. When thermal runaway occurs in one of the battery cells, high-temperature and high-pressure gas enters the discharge channel and may be discharged to other battery cells through the discharge holes, causing heat diffusion. Utility Model Content

[0004] In view of this, embodiments of the present application aim to provide a battery device and electrical equipment that can reduce the risk of thermal diffusion.

[0005] A first aspect of an embodiment of the present application provides a battery device, comprising: a box body having a discharge channel and a discharge hole connected to the discharge channel; at least two battery cells arranged in the box body, the battery cells having a pressure relief mechanism, at least two discharge holes being provided, the pressure relief mechanisms being arranged one-to-one opposite to the discharge holes; and at least two one-way discharge members being arranged one-to-one corresponding to the discharge holes, the one-way discharge members being constructed to allow discharge ejected by the pressure relief mechanism to enter the discharge channel through the discharge holes, and to prevent discharge in the discharge channel from leaving the discharge channel through the discharge holes.

[0006] In the battery device of this embodiment, a one-way discharge member is provided at the discharge hole of the discharge channel. In the event that a thermal runaway problem occurs in one of the battery cells and discharges emissions into the discharge channel, the emissions in the discharge channel cannot leave the discharge channel through the discharge hole and diffuse to other battery cells, thereby reducing the risk of thermal diffusion.

[0007] In some embodiments, the one-way discharge member includes a valve plate connected to the box body, and the valve plate has an open position for opening the discharge hole and a closed position for closing the discharge hole. When the pressure relief mechanism sprays discharge, the corresponding valve plate moves to the open position relative to the box body under the push of the discharge, and the remaining valve plates are in the closed position.

[0008] In this embodiment, the one-way discharge function is achieved by means of a valve plate, the structure is relatively simple, and the manufacturing cost can be reduced.

[0009] In some embodiments, the box body includes a first plate body and a second plate body, and the first plate body and the second plate body are connected along the thickness direction and enclosed to form the discharge channel. The discharge hole penetrates the first plate body along the thickness direction of the first plate body. In the closed position, the valve plate abuts against the first plate body, so that the movement of the valve plate in the direction close to the battery cell is restricted by the first plate body.

[0010] In this embodiment, one-way discharge is achieved by means of the cooperation between the first plate and the valve plate, and this implementation method has a low cost.

[0011] In some embodiments, the valve plate has a fixed end fixed to the first plate. When the pressure relief mechanism emits discharge, the corresponding valve plate flips around the fixed end in a direction away from the battery cell to the open position.

[0012] In this embodiment, the fixed end of the valve disc is fixed to the first plate. This ensures that when the pressure relief mechanism releases discharge, at least the fixed end of the corresponding valve disc remains secured to the first plate. This reduces the possibility of the valve disc falling from the first plate and into the discharge passage, potentially causing safety accidents. Furthermore, the high fixing strength of the fixed end reduces the possibility of the valve disc accidentally falling off and opening the discharge hole.

[0013] In some embodiments, the valve plate has a movable end arranged opposite to the fixed end. In the closed position, the fixed end and the movable end both abut against the side surface of the first plate body facing away from the battery cell. The one-way discharge member also includes at least one magnetic member. The movable end and at least one of the first plate bodies are provided with the magnetic member. In the closed position, the magnetic member provides a magnetic force to make the movable end adsorbed to the first plate body. When the pressure relief mechanism ejects discharge, the corresponding movable end of the valve plate is disconnected from the first plate body.

[0014] In this embodiment, in the closed position, both opposite ends of the valve plate are connected to the first plate body, so that the valve plate can be kept in the closed position more stably, further reducing the risk of heat diffusion. In particular, in the embodiment where the discharge channel is arranged on the bottom side of the battery cell, the possibility of the valve plate moving due to its own gravity and thus opening the discharge hole can be reduced.

[0015] Furthermore, in this embodiment, the movable end of the valve plate is connected to the first plate body by magnetic attraction. This connection method is less affected by temperature and can reduce the possibility of the movable end of the valve plate being affected by the high-temperature gas in the exhaust channel and disconnected from the first plate body.

[0016] In some embodiments, the valve sheet has a connecting portion and a bent portion, the fixed end is located at the connecting portion, and in the closed position, the bent portion is located in the discharge hole, the periphery of the bent portion abuts against the inner wall surface of the discharge hole, and an angle is formed between the surface of the bent portion facing the battery cell and the axis of the discharge hole.

[0017] In this embodiment, the coordination between the bent portion and the inner wall of the discharge hole improves the stability of the valve plate position, thereby reducing the risk of heat diffusion.

[0018] In some embodiments, the inner wall of the discharge hole away from the fixed end is partially raised to form a stopper, and the stopper is located on the side of the bent portion close to the battery cell. In the closed position, the bent portion abuts against the stopper.

[0019] In this embodiment, the provision of the stopper can enhance the limiting strength of the first plate body on the movement of the bent portion in the direction approaching the battery cell, thereby further reducing the risk of heat diffusion.

[0020] In some embodiments, the stop portion has a stop slope on a side facing the bent portion, and in the closed position, the stop slope is in contact with the bent portion.

[0021] In this embodiment, the provision of the stop slope can increase the contact area between the stop portion and the bent portion, thereby further increasing the restraining strength of the first plate body on the bent portion.

[0022] In some embodiments, the battery device further includes an insulating cover disposed between the battery cell and the first plate and covering the drain hole.

[0023] In this embodiment, an insulating cover is provided at the discharge hole, thereby reducing the possibility of a short circuit between the battery cell and the first plate, and improving the safety of the battery device.

[0024] In some embodiments, a portion of the insulating cover extends into the drain hole.

[0025] In this embodiment, a portion of the insulating cover extends into the discharge hole, which helps to achieve a close fit between the pressure relief mechanism and the discharge hole, reduce the gap between the pressure relief mechanism and the discharge hole, and thereby reduce the probability that the emissions ejected by the pressure relief mechanism spread to the remaining battery cells before entering the discharge hole.

[0026] In some embodiments, the drain channel is located on a bottom side of the battery cell.

[0027] In this embodiment, the drain channel is located on the bottom side of the battery cell, which saves horizontal space in the battery device. On the other hand, it is understood that the tabs of the battery cell are typically located on the top side of the battery cell. If the pressure relief mechanism is also located on the top side of the battery cell, it may lead to a more complex top-side structure of the battery cell and the casing, increasing the cost and difficulty of production. In this embodiment, however, the pressure relief mechanism and drain channel are located on the bottom side of the battery cell, which simplifies the production of the battery cell.

[0028] A second aspect of the embodiments of the present application provides an electrical device, which includes a battery device as described in any of the above embodiments.

[0029] The electrical equipment of the embodiment of the present application has all the advantages of the battery device described in any of the above embodiments, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0031] Figure 2 A schematic structural diagram of a battery device according to an embodiment of the present application;

[0032] Figure 3 This is an exploded schematic diagram of a battery device according to an embodiment of the present application;

[0033] Figure 4 for Figure 2 AA cross-sectional schematic diagram of a battery device;

[0034] Figure 5 This is a schematic structural diagram of a one-way discharge member according to an embodiment of the present application;

[0035] Figure 6 This is a structural schematic diagram of a one-way discharge member according to another embodiment of the present application.

[0036] Description of Reference Numerals

[0037] 1. Box body; 1a. Discharge channel; 1b. Discharge hole; 11. First plate; 111. Stopper; 111a. Stopper slope; 12. Second plate; 13. Side plate; 14. Top cover; 2. Battery cell; 21. Pressure relief mechanism; 3. One-way discharge member; 31. Valve plate; 31a. Fixed end; 31b. Movable end; 311. Connecting part; 312. Bending part; 32. Magnetic member; 4. Insulation cover. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The various specific technical features described in the specific embodiments may be combined in any suitable manner, unless they are inconsistent. For example, different embodiments and technical solutions may be formed by combining different specific technical features. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0040] In the following description, the terms "first, second, ..." are used solely to distinguish different objects and do not imply any similarities or connections between the objects. It should be understood that the directions "above," "below," "outside," and "inside" refer to directions during normal use. The directions "left" and "right" refer to the left-right directions shown in the corresponding schematic diagrams, which may or may not be the left-right directions during normal use.

[0041] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. "A plurality" means greater than or equal to two.

[0042] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0045] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0046] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0047] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells with a cable tie.

[0048] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0049] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0050] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0051] As an example, the housing may include a first housing and a second housing. The first housing and the second housing engage to form an enclosed space within the housing to house the battery cell assembly. Enclosed here means covered or closed, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0052] As an example, the box may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the box to accommodate the battery cell assembly.

[0053] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0054] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0055] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0056] The battery cell has a pressure relief mechanism. This mechanism is used to discharge the battery cell's electrolyte, dissolved or split positive and negative electrode plates, separator fragments, high-temperature and high-pressure gases generated by the reaction, flames and other emissions in the event of thermal runaway.

[0057] For example, a battery cell's internal pressure or temperature reaches a predetermined threshold, triggering the release of internal pressure or temperature. When the internal pressure or temperature of the battery cell reaches the predetermined threshold, the pressure relief mechanism activates, or a weakened structure within the pressure relief mechanism is destroyed, thereby creating an opening or channel for the internal pressure or temperature to release. This threshold design varies depending on design requirements. The threshold may depend on the material of one or more of the positive electrode sheet, negative electrode sheet, electrolyte, and separator in the battery cell.

[0058] As an example, the pressure relief mechanism may be integrally formed with the housing.

[0059] As an example, the pressure relief mechanism may also be provided separately from and connected to the housing.

[0060] The "activation" mentioned in this application refers to the action of the pressure relief mechanism or its activation to a certain state, so that the internal pressure and temperature of the battery cell can be released. The action produced by the pressure relief mechanism may include but is not limited to: the movement of components in the pressure relief mechanism to form an exhaust channel, at least a part of the pressure relief mechanism rupturing, breaking, tearing or opening, etc. When the pressure relief mechanism is actuated, the high-temperature and high-pressure substances inside the battery cell will be discharged outward from the actuated part as emissions. In this way, the pressure and temperature of the battery cell can be relieved under controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0061] In some embodiments, when the outer shell is a non-sealed structure, the pressure relief mechanism can be configured as a through hole for discharging gas from inside the battery cell.

[0062] The emissions from the battery cells mentioned in this application include but are not limited to: electrolyte, dissolved or split positive and negative electrode sheets, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0063] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0064] In related art, the battery device housing has a drain channel. Exhaust from the pressure relief mechanism of a battery cell enters the channel through a drain hole in the channel and is then discharged outside the battery cell. However, a battery device typically includes multiple battery cells. After the pressure relief mechanism of one battery cell discharges exhaust into the drain channel, the exhaust within the drain channel may exit the channel through other drain holes and reach other battery cells, thereby causing heat diffusion.

[0065] In response to the above problems, a battery device according to an embodiment of the present application is proposed. The battery device according to the embodiment of the present application includes a housing, at least two battery cells, and at least two one-way discharge members. The housing has a discharge channel and a discharge hole connected to the discharge channel. At least two battery cells are arranged in the housing. The battery cells have a pressure relief mechanism. There are at least two discharge holes, and the pressure relief mechanisms are arranged one-to-one with the discharge holes. At least two one-way discharge members are arranged in a one-to-one correspondence with the discharge holes. The one-way discharge members are constructed to allow the discharge ejected by the pressure relief mechanism to enter the discharge channel through the discharge hole, and to prevent the discharge in the discharge channel from leaving the discharge channel through the discharge hole.

[0066] In the battery device of this embodiment, a one-way discharge member is provided at the discharge hole of the discharge channel. In the event that a thermal runaway problem occurs in one of the battery cells and discharges emissions into the discharge channel, the emissions in the discharge channel cannot leave the discharge channel through the discharge hole and diffuse to other battery cells, thereby reducing the risk of thermal diffusion.

[0067] For the convenience of explanation, the following embodiments take a vehicle as an example of an electrical device to introduce the structure of the battery device and the electrical device of the present application in detail.

[0068] Please refer to Figure 1 , Figure 1The electrical device 1000 provided for some embodiments of the present application is a structural diagram of a vehicle. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The vehicle is provided with a battery device 100, and the battery 200 can be arranged at the bottom, head or tail of the vehicle. The battery device 100 can be used to power the vehicle, for example, the battery device 100 can be used as an operating power source for the vehicle. The vehicle may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for the starting, navigation and working power requirements of the vehicle during driving. In some embodiments of the present application, the battery device 100 can not only serve as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0069] Reference Figure 2-Figure 4 The battery device 100 of the embodiment of the present application includes a housing 1, at least two battery cells 2, and at least two one-way exhaust members 3. The housing 1 has an exhaust channel 1a and an exhaust hole 1b connected to the exhaust channel 1a. At least two battery cells 2 are disposed within the housing 1. The battery cells 2 have a pressure relief mechanism 21. There are at least two exhaust holes 1b, and the pressure relief mechanisms 21 are disposed one-to-one with the exhaust holes 1b. The at least two one-way exhaust members 3 are disposed one-to-one with the exhaust holes 1b. The one-way exhaust members 3 allow the exhaust ejected from the pressure relief mechanism 21 to enter the exhaust channel 1a through the exhaust holes 1b, and prevent the exhaust in the exhaust channel 1a from leaving the exhaust channel 1a through the exhaust holes 1b.

[0070] The specific structure of the box body 1 and the specific formation method of the discharge channel 1a are not limited. As an example, the discharge channel 1a can be formed at any one of the top, side, and bottom of the box body 1. The number of discharge channels 1a can be one or more. Those skilled in the art can determine the position and number of the discharge channels 1a based on the specific setting method of the pressure relief mechanism 21 of the battery cell 2 and the placement method of the battery cell 2.

[0071] The battery cell 2 has a pressure relief mechanism 21. The specific structure of the pressure relief mechanism 21 is not limited. A battery cell 2 may have only one pressure relief mechanism 21 or multiple pressure relief mechanisms 21. In the embodiment where the battery cell 2 has multiple pressure relief mechanisms 21, the multiple pressure relief mechanisms 21 may be located on the same wall of the battery cell 2 or on different walls of the battery cell 2.

[0072] The discharge channel 1a is specifically used to collect and / or discharge the emissions ejected by the pressure relief mechanism 21. The emissions here include but are not limited to electrolyte, dissolved or split positive and negative pole pieces, fragments of the isolation membrane, high-temperature and high-pressure gas generated by the reaction, flames, etc.

[0073] The exhaust passage 1 a may further have an outlet communicating with the external environment, so that exhaust in the exhaust passage 1 a can be discharged to the outside of the battery device 100 via the outlet.

[0074] Pressure relief mechanism 21 and discharge hole 1b are positioned opposite each other. Specifically, discharge hole 1b is located in the discharge direction of pressure relief mechanism 21. Projected along the discharge direction of pressure relief mechanism 21, the projection of discharge hole 1b overlaps the projection of pressure relief mechanism 21's outlet. This allows the discharge from pressure relief mechanism 21 to enter discharge channel 1a through discharge hole 1b.

[0075] The pressure relief mechanism 21 can be sealed with the corresponding discharge hole 1b, so that almost all of the emissions discharged from the pressure relief mechanism 21 can enter the discharge channel 1a through the discharge hole 1b, reducing the probability that the emissions from the pressure relief mechanism 21 will spread to other battery cells 2 before entering the discharge hole 1b. Alternatively, adjacent battery cells 2 can be separated by a partition, etc., to reduce the probability that the emissions from the pressure relief mechanism 21 will spread to other battery cells 2 before entering the discharge hole 1b.

[0076] The one-way discharge member 3 is provided in a one-to-one correspondence with the discharge hole 1 b . The one-to-one correspondence here specifically means that a one-way discharge member 3 is provided at each discharge hole 1 b .

[0077] The one-way discharge member 3 is configured to allow the discharge from the pressure relief mechanism 21 to enter the discharge channel 1a through the discharge hole 1b, while preventing the discharge in the discharge channel 1a from leaving the discharge channel 1a through the discharge hole 1b. The specific structure of the one-way discharge member 3 is not limited. As examples, the one-way discharge member 3 may be a one-way valve, a one-way movable valve disc 31-like structure, a one-way valve-like structure, etc. Persons skilled in the art can configure it according to actual use requirements.

[0078] In the battery device 100 of this embodiment, a one-way discharge member 3 is provided at the discharge hole 1b of the discharge channel 1a. When one of the battery cells 2 has a thermal runaway problem and sprays emissions into the discharge channel 1a, the emissions in the discharge channel 1a cannot leave the discharge channel 1a through the discharge hole 1b and diffuse to other battery cells 2, thereby reducing the risk of thermal diffusion.

[0079] In some embodiments, reference Figure 4-Figure 6 The one-way discharge member 3 includes a valve plate 31 connected to the housing 1. The valve plate 31 has an open position to open the discharge hole 1b and a closed position to close the discharge hole 1b. When the pressure relief mechanism 21 sprays discharge, the corresponding valve plate 31 moves to the open position relative to the housing 1 under the push of the discharge, and the other valve plates 31 are in the closed position.

[0080] The specific structure of the valve plate 31 is not limited, and it can be a linear extension structure, a broken line extension structure, an arc extension structure or even an irregular extension structure. The outer wheel of the valve plate 31 can be circular, square or irregular in shape.

[0081] The valve disc 31 has an open position, which opens the discharge hole 1b, and a closed position, which closes the discharge hole 1b. For example, in the closed position, the valve disc 31 may be located outside and covering the discharge hole 1b. Alternatively, the valve disc 31 may be located inside the discharge hole 1b, with the outer periphery of the valve disc 31 abutting the inner periphery of the discharge hole 1b. Those skilled in the art may adjust the valve disc 31 to meet actual usage requirements, as long as the valve disc 31 achieves the desired flow-blocking effect when in the closed position.

[0082] When the pressure relief mechanism 21 releases discharge material, the corresponding valve disc 31 moves relative to the housing 1 and switches to the open position, while the other valve discs 31 are in the closed position.

[0083] The "corresponding valve plate 31" herein specifically refers to the valve plate 31 provided at the discharge hole 1b opposite to the pressure relief mechanism 21. It is understood that the pressure relief mechanism 21 generates a large thrust when ejecting the discharge, and therefore, the valve plate 31 can move relative to the housing 1 under the push of the discharge.

[0084] The specific way in which the valve plate 31 moves relative to the box body 1 is not limited, and it can be translation, rotation or irregular movement, etc. Those skilled in the art can make specific settings according to actual use requirements.

[0085] The valve disc 31 can be configured to remain in the closed position during normal use (when the pressure relief mechanism 21 is not discharging discharge). Thus, when one pressure relief mechanism 21 is discharging discharge, the remaining valve discs 31 can be in the closed position. For example, the valve disc 31 can be retained in the closed position by means of a connecting structure such as tape or a magnet, or a retaining structure can be provided on the housing 1 to retain the valve disc 31 in the closed position.

[0086] Of course, in some other embodiments, the valve plate 31 may not be in the closed position under normal use, but in the initial position between the open position and the closed position. When the pressure relief mechanism 21 sprays emissions, the corresponding valve plate 31 may move along the first direction under the push of the emissions sprayed by the pressure relief mechanism 21, thereby switching from the initial position to the open position. The remaining valve plates 31 move along the second direction opposite to the first direction under the push of the emissions entering the discharge channel 1a, thereby switching from the initial position to the closed position.

[0087] In this embodiment, the one-way discharge function is achieved by means of the valve plate 31, the structure is relatively simple, and the manufacturing cost can be reduced.

[0088] In some embodiments, reference Figure 4-Figure 6 The box body 1 includes a first plate body 11 and a second plate body 12, which are connected to each other along the thickness direction and enclosed to form a discharge channel 1a. The discharge hole 1b passes through the first plate body 11 along the thickness direction of the first plate body 11. In the closed position, the valve plate 31 abuts against the first plate body 11, so that the movement of the valve plate 31 in the direction close to the battery cell 2 is restricted by the first plate body 11.

[0089] Taking the discharge channel 1a located at the bottom of the box body 1 as an example, the first plate 11 can be the profile plate of the box body 1 used to support the bottom of the battery cell 2, and the second plate 12 can be the bottom plate of the box body 1. The box body 1 can also include multiple side plates 13 and a top cover 14. The multiple side plates 13 are arranged to form a storage space. The first plate 11 and the second plate 12 are connected to the bottom ends of the side plates 13, and the top cover 14 is connected to the top ends of the side plates 13.

[0090] In the closed position, the valve plate 31 abuts against the first plate 11, so that the movement of the valve plate 31 in the direction close to the battery cell 2 is restricted by the first plate 11. As an example, the valve plate 31 can abut against the side surface of the first plate 11 facing away from the battery cell 2. As another example, the inner wall surface of the discharge hole 1b can form a limiting structure, and the valve plate 31 can abut against the side surface of the limiting structure facing away from the battery cell 2. Those skilled in the art can make specific determinations based on actual usage requirements.

[0091] It can be understood that the thrust provided by the discharge in the discharge channel 1a to the valve plate 31 is in the direction of the battery cell 2. In this embodiment, in the closed position, the movement of the valve plate 31 in this direction is restricted. Therefore, the valve plate 31 cannot move from the closed position to open the discharge hole 1b under the push of the discharge in the discharge channel 1a. Therefore, the discharge in the discharge channel 1a can be prevented from leaving the discharge channel 1a through the discharge hole 1b, thereby achieving one-way discharge.

[0092] In this embodiment, one-way discharge is achieved by means of the cooperation between the first plate 11 and the valve plate 31 , and this implementation method has a low cost.

[0093] It should be noted that the implementation method of one-way discharge is not limited to this. For example, the number of valve plates 31 can also be multiple, and multiple valve plates 31 together form a valve-like structure. In the closed position, multiple valve plates 31 abut against each other to limit each other's movement in the direction close to the battery cell 2.

[0094] In some embodiments, still referring to Figure 4-Figure 6 The valve plate 31 has a fixed end 31a, which is fixed to the first plate 11. When the pressure relief mechanism 21 emits discharge, the corresponding valve plate 31 flips around the fixed end 31a in a direction away from the battery cell 2 to an open position.

[0095] Here, "the valve plate 31 flips around the fixed end 31a in the direction away from the battery cell 2" specifically means that the relative position of the fixed end 31a and the box body 1 remains unchanged, while the other parts of the valve plate 31 move in the direction away from the battery cell 2, so that the movement of the valve plate 31 as a whole is flipped around the fixed end 31a.

[0096] As an example, the valve plate 31 may include a first part and a second part, the first part is rotatably connected to the second part, the fixed end 31a is set on the first part, and the second part can flip around the fixed end 31a under the push of the discharge ejected by the pressure relief mechanism 21.

[0097] As another example, the valve plate 31 can be a one-piece structure configured to deform under the influence of the discharge ejected by the pressure relief mechanism 21, thereby enabling the remaining portion of the valve plate 31 to move relative to the fixed end 31a. The deformation of the valve plate 31 under the influence of the discharge ejected by the pressure relief mechanism 21 can be elastic or plastic, without limitation. It should also be noted that in this embodiment, the remaining portion of the valve plate 31 should be prevented from deforming under the influence of the discharge within the discharge channel 1a, thereby breaking through the confinement of the first plate 11 and moving toward the battery cell 2. It is understood that the thrust provided by the discharge within the discharge channel 1a is significantly less than the thrust exerted by the discharge ejected by the pressure relief mechanism 21. Therefore, the structural strength of the valve plate 31 can be appropriately increased so that it substantially does not deform under the influence of the discharge within the discharge channel 1a, and / or the area of ​​contact between the valve plate 31 and the first plate 11 can be increased so that even slight deformation prevents the valve plate 31 from breaking through the confinement of the first plate 11.

[0098] Furthermore, it can be understood that in order to achieve the above-mentioned effect, the fixed end 31a needs to remain fixed to the first plate body 11 when the pressure relief mechanism 21 sprays emissions, and the emissions sprayed by the pressure relief mechanism 21 have the characteristics of high temperature and high pressure. Therefore, it is necessary to adopt a high-temperature resistant and high-strength fixing method for fixing. As an example, the fixed end 31a can be fixed to the first plate body 11 by screw fixing, welding, etc. Of course, those skilled in the art can also adopt other fixing methods that can meet the strength requirements for fixing.

[0099] In this embodiment, the fixed end 31a of the valve disc 31 is fixed to the first plate 11. This ensures that when the pressure relief mechanism 21 releases discharge material, at least the fixed end 31a of the corresponding valve disc 31 remains fixed to the first plate 11. This reduces the possibility of the valve disc 31 falling from the first plate 11 and into the discharge passage 1a, potentially causing safety accidents. Furthermore, the high fixing strength of the fixed end 31a reduces the possibility of the valve disc 31 accidentally falling off and opening the discharge hole 1b.

[0100] It should be noted that the connection method between the valve plate 31 and the first plate 11 and the movement of the valve plate 31 relative to the housing 1 are not limited to this. For example, the first plate 11 may be formed with a sliding groove extending away from the battery cell 2, and the valve plate 31 may slide in engagement with the sliding groove. When the pressure relief mechanism 21 releases discharge, the valve plate 31 moves along the sliding groove away from the battery cell 2, thereby opening the discharge hole 1b. For another example, the valve plate 31 may be connected to the first plate 11 using a relatively low-strength connection, such that the valve plate 31 can be disconnected from the first plate 11 and move away from the battery cell 2, thereby switching to the open position, under the action of discharge from the pressure relief mechanism 21, while the remaining valve plates 31 remain connected to the first plate 11 and are in the closed position.

[0101] In some embodiments, reference Figure 5 The valve plate 31 has a movable end 31b arranged opposite to the fixed end 31a. In the closed position, the fixed end 31a and the movable end 31b both abut against the surface of the first plate 11 on the side facing away from the battery cell 2. The one-way discharge member 3 also includes at least one magnetic member 32. The movable end 31b and at least one of the first plate 11 are provided with a magnetic member 32. In the closed position, the magnetic member 32 provides a magnetic force to cause the movable end 31b to be adsorbed on the first plate 11. When the pressure relief mechanism 21 ejects the discharge, the movable end 31b of the corresponding valve plate 31 is disconnected from the first plate 11.

[0102] In this embodiment, in the closed position, the fixed end 31a and the movable end 31b both abut against the surface of the first plate 11 facing away from the battery cell 2 , so that the movement of the valve plate 31 in the direction approaching the battery cell 2 is restricted by the first plate 11 .

[0103] The magnetic member 32 provides a magnetic force that causes the movable end 31b to adhere to the first plate 11, thereby maintaining the valve disc 31 in the closed position. It should be noted that the magnetic force provided by the magnetic member 32 should not exceed the thrust provided by the pressure relief mechanism 21 when discharging the discharge. This allows the movable end 31b of the valve disc 31 to disconnect from the first plate 11 when the pressure relief mechanism 21 discharges the discharge, thereby allowing the valve disc 31 to flip around the fixed end 31a.

[0104] The specific structure of the magnetic member 32 is not limited. As an example, the magnetic member 32 may be a permanent magnet, which may be connected to the first plate 11 or the movable end 31 b by bonding, welding, or the like.

[0105] As an example, only one of the movable end 31b and the first plate 11 may be provided with a magnetic member 32, while the other may be a metal structure, or at least a metal structure at a position corresponding to the magnetic member 32, thereby achieving mutual adsorption. Alternatively, a magnetic member 32 may be provided on each of the movable end 31b and the first plate 11, and the two magnetic members 32 may have different magnetic properties, thereby achieving mutual adsorption.

[0106] In this embodiment, in the closed position, the opposite ends of the valve plate 31 are connected to the first plate body 11, so that the valve plate 31 can be kept in the closed position more stably, further reducing the risk of heat diffusion. In particular, in the embodiment where the discharge channel 1a is arranged at the bottom of the box body 1, the possibility of the valve plate 31 moving due to its own gravity and thus opening the discharge hole 1b can be reduced.

[0107] Furthermore, in this embodiment, the movable end 31b of the valve plate 31 is connected to the first plate body 11 by magnetic attraction. This connection method is less affected by temperature and can reduce the possibility of the movable end 31b of the valve plate 31 being affected by the high-temperature and high-pressure exhaust in the exhaust channel 1a and being disconnected from the first plate body 11.

[0108] In other embodiments, referring to Figure 6 The valve plate 31 has a connecting portion 311 and a bent portion 312. The fixed end 31a is located at the connecting portion 311. In the closed position, the bent portion 312 is located in the discharge hole. The periphery of the bent portion 312 abuts against the inner wall surface of the discharge hole 1b, and an angle is formed between the surface of the bent portion 312 facing the battery cell 2 and the axis of the discharge hole 1b.

[0109] As an example, the connecting portion 311 and the bending portion 312 can be an integrated structure. In the actual preparation process, a straight sheet structure can be manufactured first, and then a part of it is bent to form the bending portion 312, and the other part is formed into the connecting portion 311.

[0110] The fixed end 31a is located at the connecting portion 311. The connecting portion 311 (fixed end 31a) can be fixed to the surface of the first plate 11 facing away from the battery cell 2, or to the inner wall of the discharge hole 1b. There is no limitation on this.

[0111] The surface of the bent portion 312 can be a plane or a curved surface, which is not limited. In the closed position, the bent portion 312 can have only a portion thereof located in the discharge hole 1b or can be entirely located in the discharge hole 1b, which is not limited.

[0112] The periphery of the bent portion 312 abuts against the inner wall of the discharge hole 1b, and an angle is formed between the surface of the bent portion 312 facing the battery cell 2 and the axis of the discharge hole 1b. Figure 6The inner wall of the drain hole 1b provides a certain amount of support for the valve plate 31, thereby improving the positional stability of the valve plate 31. In particular, in the embodiment where the drain channel 1a is disposed on the bottom side of the battery cell 2, the support provided by the inner wall of the drain hole 1b can counteract the self-weight of the valve plate 31, reducing the possibility of the valve plate 31 moving due to its own weight and thus opening the drain hole 1b.

[0113] The specific angle formed between the surface of the bent portion 312 facing the battery cell 2 and the axis of the discharge hole 1 b is not limited.

[0114] Furthermore, as mentioned above, the valve plate 31 can be configured to be deformed under the push of the discharge ejected by the pressure relief mechanism 21, so that when the pressure relief mechanism 21 ejects the discharge, the corresponding valve plate 31 can be deformed and move in a direction away from the battery cell 2 to open the discharge hole 1b.

[0115] In this embodiment, the coordination between the bent portion 312 and the inner wall of the discharge hole 1 b improves the stability of the position of the valve plate 31 , thereby reducing the risk of heat diffusion.

[0116] In some embodiments, still referring to Figure 6 The inner wall of the discharge hole 1b away from the fixed end 31a is partially raised to form a stopper 111. The stopper 111 is located on the side of the bent portion 312 close to the battery cell 2. In the closed position, the bent portion 312 abuts against the stopper 111.

[0117] The specific structure of the stopper 111 is not limited, and it can be hemispherical, wedge-shaped, step-shaped, etc.

[0118] In this embodiment, the provision of the stopper 111 can enhance the limiting strength of the first plate 11 on the movement of the bent portion 312 in the direction approaching the battery cell 2 , thereby further reducing the risk of heat diffusion.

[0119] It should be noted that in some other embodiments, the stopper 111 may not be provided, and the friction between the periphery of the bent portion 312 and the inner surface of the discharge hole 1b is relied upon to limit the movement of the bent portion 312 in the direction approaching the battery cell 2.

[0120] In some embodiments, still referring to Figure 6 The stop portion 111 has a stop slope 111 a on one side facing the bent portion 312 . In the closed position, the stop slope 111 a is in contact with the bent portion 312 .

[0121] As mentioned above, an angle is formed between the side surface of the bent portion 312 facing the battery cell 2 and the axis of the discharge hole 1b, that is, the side surface of the bent portion 312 is inclined, and the inclination direction and angle of the stop slope 111a can be roughly the same as the inclination direction and angle of the side surface (they can be the same, or there can be a deviation of, for example, no more than 1°, 1.5°, or 2°), so that the stop slope 111a can fit with the side surface of the bent portion 312. Fitting here specifically refers to contact in a manner with basically no gap.

[0122] In this embodiment, the provision of the stopping slope 111 a can increase the contact area between the stopping portion 111 and the bent portion 312 , thereby further increasing the restraining strength of the first plate 11 on the bent portion 312 .

[0123] In some embodiments, reference Figure 5 and Figure 6 The battery device 100 further includes an insulating cover 4 , which is disposed between the battery cell 2 and the first plate 11 and covers the discharge hole 1 b .

[0124] The insulating cover 4 is mainly used to achieve insulation between the battery cell 2 and the first plate 11, especially between the pressure relief mechanism 21 and the first plate 11. Specifically, the insulating cover 4 covers the discharge hole 1b, which means that the projection of the insulating cover 4 along the axial direction of the discharge hole 1b covers the projection of the discharge hole 1b.

[0125] The insulating cover 4 may be fixedly connected to the battery cell 2 and / or the first plate 11 by bonding to improve the stability of its position.

[0126] The insulating cover 4 can be set in a one-to-one correspondence with the discharge hole 1b. In other words, one insulating cover 4 only covers one discharge hole 1b. Alternatively, the insulating cover 4 can be set in a one-to-one correspondence with the first plate body 11. One insulating cover 4 covers all the discharge holes 1b on one first plate body 11.

[0127] When the pressure relief mechanism 21 ejects the discharge, the corresponding insulating cover 4 may be broken by the discharge ejected from the pressure relief mechanism 21 , thereby allowing the discharge to enter the discharge hole 1 b .

[0128] In this embodiment, an insulating cover 4 is provided at the discharge hole 1 b , thereby reducing the possibility of a short circuit between the battery cell 2 and the first plate 11 and improving the safety of the battery device 100 .

[0129] In some embodiments, still referring to Figure 5 and Figure 6 , a portion of the insulating cover 4 extends into the discharge hole 1b.

[0130] Here, a portion of the insulating cover 4 extends into the discharge hole 1 b specifically means that, along the direction pointing to the battery cell 2 , a portion of the insulating cover 4 is located inside the plane where the opening of the discharge hole 1 b is located.

[0131] In this embodiment, a portion of the insulating cover 4 extends into the discharge hole 1b, which helps to achieve a close fit between the pressure relief mechanism 21 and the discharge hole 1b, reduce the gap between the pressure relief mechanism 21 and the discharge hole 1b, and thereby reduce the probability that the emissions ejected by the pressure relief mechanism 21 spread to the remaining battery cells 2 before entering the discharge hole 1b.

[0132] In some embodiments, the exhaust passage 1 a is located on the bottom side of the battery cell 2 .

[0133] Taking the example of the exhaust channel 1a being surrounded by the first plate 11 and the second plate 12 , the first plate 11 may be a profile plate of the box 1 for supporting the bottom of the battery cell 2 , and the second plate 12 may be the bottom plate of the box 1 .

[0134] Since the pressure relief mechanism 21 is disposed opposite to the discharge hole 1 b , the pressure relief mechanism 21 is also located at the bottom side of the battery cell 2 .

[0135] In this embodiment, the drain channel 1a is located on the bottom side of the battery cell 2, thereby saving horizontal space in the battery device 100. On the other hand, it is understood that the tabs of the battery cell 2 are typically located on the top side of the battery cell 2. If the pressure relief mechanism 21 were also located on the top side of the battery cell 2, the top side structure of the battery cell 2 and the housing 1 would likely be more complex, increasing the cost and difficulty of fabrication. However, in this embodiment, the pressure relief mechanism 21 and drain channel 1a are located on the bottom side of the battery cell 2, which simplifies the fabrication of the battery cell 2.

[0136] The battery device 100 involved in one or more of the above embodiments will be described in more detail and specifically with reference to two specific embodiments.

[0137] Example 1

[0138] Reference Figure 2-Figure 5 In this embodiment, the battery device 100 includes a box body 1, at least two battery cells 2 and at least two one-way discharge members 3.

[0139] The housing 1 has a drain channel 1a and at least two drain holes 1b connected to the drain channel 1a. Specifically, the housing 1 comprises a first plate 11 and a second plate 12, which are butted together along their thickness to form the drain channel 1a. The drain holes 1b extend through the thickness of the first plate 11. The drain channel 1a is located on the bottom side of the battery cell 2. The first plate 11 is a profiled plate used to support the bottom of the battery cell 2, and the second plate 12 serves as the bottom plate of the housing 1.

[0140] The bottom of the battery cell 2 is provided with a pressure relief mechanism 21 , which is arranged one-to-one opposite to the discharge hole 1 b , so that the discharge ejected by the pressure relief mechanism 21 can enter the discharge channel 1 a through the discharge hole 1 b .

[0141] The one-way discharge member 3 is arranged in a one-to-one correspondence with the discharge hole 1b. The one-way discharge member 3 is constructed to allow the discharge ejected by the pressure relief mechanism 21 to enter the discharge channel 1a through the discharge hole 1b, and to prevent the discharge in the discharge channel 1a from leaving the discharge channel 1a through the discharge hole 1b. In other words, the one-way discharge member 3 only allows one-way discharge, thereby reducing the possibility of heat diffusion.

[0142] Specifically, the one-way discharge member 3 includes a valve plate 31 and a magnetic member 32 . The valve plate 31 has an open position for opening the discharge hole 1 b and a closed position for closing the discharge hole 1 b .

[0143] The valve plate 31 has a fixed end 31a and a movable end 31b that are relatively arranged. In the closed position, the fixed end 31a and the movable end 31b both abut against the side surface of the first plate 11 facing away from the battery cell 2, so that the movement of the valve plate 31 in the direction close to the battery cell 2 is restricted by the first plate 11, thereby achieving a one-way exhaust effect.

[0144] The valve plate 31 is a metal structure, and the magnetic member 32 is arranged on the first plate body 11. In the closed position, the magnetic member 32 provides a magnetic force to cause the movable end 31b to be adsorbed to the first plate body 11. When the pressure relief mechanism 21 sprays emissions, the movable end 31b of the corresponding valve plate 31 is disconnected from the first plate body 11 under the push of the emissions, causing the valve plate 31 to flip around the fixed end 31a in the direction away from the battery cell 2 to the open position.

[0145] The battery device 100 includes an insulating cover 4 , which is disposed between the battery cell 2 and the first plate 11 and covers the drain hole 1 b , with a portion of the insulating cover 4 extending into the drain hole 1 b .

[0146] Example 2

[0147] Reference Figure 6The difference from the first embodiment is that the valve plate 31 of the second embodiment includes a connecting portion 311 and a bent portion 312, the fixed end 31a is located at the connecting portion 311, and in the closed position, the bent portion 312 is located in the discharge hole 1b, the periphery of the bent portion 312 abuts against the inner wall surface of the discharge hole 1b, and an angle is formed between the surface of the bent portion 312 facing the battery cell 2 and the axis of the discharge hole 1b.

[0148] The inner wall surface of the discharge hole 1b on the side away from the fixed end 31a is partially raised to form a stop portion 111. The stop portion 111 is located on the side of the bent portion 312 close to the battery cell 2. The stop portion 111 has a stop slope 111a on the side facing the bent portion 312. In the closed position, the stop slope 111a is in contact with the bent portion 312.

[0149] The present application also provides an electric device 1000, which includes a battery device 100 as described in any of the above embodiments. The electric device of this embodiment can be any device that uses a battery cell 2, such as a mobile phone, a portable device, a laptop computer, an electric vehicle, an electric toy, an electric tool, a vehicle, a ship, and a spacecraft. For example, a spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft.

[0150] The electric device 1000 of the embodiment of the present application has all the advantages of the battery device 100 described in any of the above embodiments, which will not be repeated here.

[0151] In the description of this application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in this application and features of different embodiments or examples without contradiction.

[0152] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A battery device, characterized in that: The battery device comprises: a box body having a discharge passage and a discharge hole communicating with the discharge passage; At least two battery cells are disposed in the box, each battery cell has a pressure relief mechanism, at least two discharge holes are provided, and the pressure relief mechanisms are arranged opposite to the discharge holes one by one; and At least two one-way discharge members are provided in one-to-one correspondence with the discharge holes, and the one-way discharge members are configured to allow the discharge ejected by the pressure relief mechanism to enter the discharge channel through the discharge hole and to prevent the discharge in the discharge channel from leaving the discharge channel through the discharge hole.

2. The battery device according to claim 1, wherein: The one-way discharge member includes a valve plate connected to the box body, and the valve plate has an open position for opening the discharge hole and a closed position for closing the discharge hole. When the pressure relief mechanism sprays discharge, the corresponding valve plate moves to the open position relative to the box body under the push of the discharge, and the remaining valve plates are in the closed position.

3. The battery device according to claim 2, characterized in that The box body includes a first plate body and a second plate body, the first plate body and the second plate body are butted together in the thickness direction and surround to form the discharge channel, and the discharge hole penetrates the first plate body in the thickness direction of the first plate body. In the closed position, the valve plate abuts against the first plate, so that the movement of the valve plate in a direction approaching the battery cell is restricted by the first plate.

4. The battery device according to claim 3, characterized in that The valve plate has a fixed end, and the fixed end is fixed to the first plate body. When the pressure relief mechanism releases discharge, the corresponding valve plate flips around the fixed end in a direction away from the battery cell to the open position.

5. The battery device according to claim 4, characterized in that The valve plate has a movable end opposite to the fixed end. In the closed position, the fixed end and the movable end are both against a surface of the first plate facing away from the battery cell. The one-way discharge member also includes at least one magnetic member, and the magnetic member is provided on at least one of the movable end and the first plate body. In the closed position, the magnetic member provides a magnetic force to adsorb the movable end to the first plate body. When the pressure relief mechanism sprays discharge, the corresponding movable end of the valve plate is disconnected from the first plate body.

6. The battery device according to claim 4, characterized in that The valve plate has a connecting portion and a bent portion, the fixed end is located at the connecting portion, and in the closed position, the bent portion is located in the discharge hole, the periphery of the bent portion abuts against the inner wall surface of the discharge hole, and an angle is formed between the surface of the bent portion facing the battery cell and the axis of the discharge hole.

7. The battery device according to claim 6, characterized in that The inner wall of the discharge hole at one side away from the fixed end is partially raised to form a stopper, and the stopper is located on the side of the bent portion close to the battery cell. In the closed position, the bent portion abuts against the stopper.

8. The battery device according to claim 7, characterized in that The stop portion has a stop slope on one side facing the bent portion. In the closed position, the stop slope is in contact with the bent portion.

9. The battery device according to any one of claims 3 to 8, characterized in that: The battery device further includes an insulating cover disposed between the battery cell and the first plate and covering the drain hole.

10. The battery device according to claim 9, characterized in that A portion of the insulating cover extends into the discharge hole.

11. The battery device according to claim 1, wherein: The exhaust passage is located at a bottom side of the battery cell.

12. An electrical device, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1 to 11.

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