Battery device and electric device

Abstract

The embodiment of the utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer assembly and a heat management assembly, the heat management assembly is arranged on one side of the battery monomer assembly along a first direction, the heat management assembly comprises an overflowing plate and a collector plate, a separation rib is arranged in a cavity of the overflowing plate, and the separation rib is connected with two opposite side wall surfaces of the cavity along the first direction and is separated into two overflowing channels arranged along a second direction; the two collector plates are located on the two sides, in the third direction, of the overflowing plate correspondingly, and the collector plates are provided with confluence channels communicating with the overflowing channels. In the first direction, one part of the separation ribs incline towards one side of the second direction, and the other part of the separation ribs incline towards the other side; and / or the cavity is also provided with a first reinforcing rib for connecting the separation rib and the wall surface of the cavity, the separation rib is inclined towards one side of the second direction along the first direction, and the first reinforcing rib is inclined towards the other side. The battery device provided by the embodiment of the utility model is beneficial to reducing the change of the sectional area of the overflowing channel caused by the deformation of the separation ribs.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of battery, in particular to a battery device and a power consumption device. BACKGROUND

[0002] In the related art, a battery device is provided with a battery monomer and a thermal management assembly, the thermal management assembly is in contact with the battery monomer to form a heat conduction path therebetween. The thermal management assembly is provided with a channel for the flow of a thermal management medium, and the thermal management medium constantly exchanges heat with the battery monomer to achieve the purpose of regulating the temperature of the battery monomer. CONTENT OF THE UTILITY MODEL

[0003] The present inventor finds that due to the influence of forces such as gravity and installation extrusion, the battery monomer will extrude the thermal management assembly, causing the channel in the thermal management assembly to deform, thereby affecting the flow of the thermal management medium in the flow channel, and thus not conducive to meeting the expected demand for thermal management of the battery monomer.

[0004] Therefore, embodiments of the present application aim to provide a battery device and a power consumption device that are conducive to inhibiting the deformation of the channel in the thermal management assembly.

[0005] To achieve the purpose, the technical solution of the embodiments of the present application is as follows:

[0006] The embodiments of the present application provide a battery device, comprising:

[0007] a battery monomer assembly comprising a battery monomer;

[0008] a thermal management assembly comprising a flow plate and two current collecting plates, the flow plate is arranged on one side of the battery monomer assembly along a first direction and is attached to the battery monomer, the flow plate is provided with a cavity, a partition rib is arranged in the cavity, the partition rib connects two side walls of the cavity along the first direction and divides the cavity into at least two flow channels arranged along a second direction, the two current collecting plates are respectively arranged on both sides of the flow plate along a third direction, the first direction, the second direction and the third direction intersect with each other, a flow collection channel is arranged in the current collecting plate, the flow collection channel is open on one side along the third direction and communicates with the flow channel, and the flow collection channel communicates with the outside of the thermal management assembly;

[0009] The number of the partition ribs is multiple, along the first direction, a part of the partition ribs are inclined towards one side of the second direction, and another part of the partition ribs are inclined towards the other side;

[0010] And / or, the cavity is further provided with a first reinforcing rib, the first reinforcing rib connects the partition rib and the wall surface of the cavity, and the partition rib is inclined to one side of the second direction, and the first reinforcing rib is inclined to the other side.

[0011] The battery device in the embodiments of the present application can inhibit deformation of the partition rib caused by the force of the battery monomer assembly, thereby reducing the change in the cross-sectional area of the overcurrent passage caused by deformation of the partition rib, reducing the probability of the cross-sectional area of the overcurrent passage being reduced and blocked due to deformation, facilitating the flow of the thermal management medium in the overcurrent passage to meet the demand, improving the thermal management efficiency of the battery monomer, and prolonging the service life of the battery device; through the two current collecting plates, the thermal management medium entering the current collecting passage from the outside can be dispersed into each overcurrent passage, and after heat exchange, the thermal management medium in each overcurrent passage converges into another current collecting passage, facilitating the centralized supply and recovery of the thermal management medium in the thermal management assembly.

[0012] In some embodiments, the number of partition ribs is multiple, and at least two partition ribs are arranged intersecting each other. In this way, each partition rib intersecting each other is constrained by each other, thereby mutually restraining the deformation of each other, and facilitating the reduction of the change in the cross-sectional area of the overcurrent passage caused by the deformation of the partition rib.

[0013] In some embodiments, the cavity is further provided with a second reinforcing rib, and the second reinforcing rib connects two partition ribs intersecting each other. In this way, the deformation of the two partition ribs arranged intersecting each other can be effectively inhibited by the second reinforcing rib, and the change in the cross-sectional area of the overcurrent passage caused by the deformation of the partition rib is further reduced.

[0014] In some embodiments, the connection position of the second reinforcing rib and the partition rib is a first area, the connection position of the partition rib and the wall surface of the cavity along one side in the first direction is a second area, and the first area coincides with the second area. In this way, the second reinforcing rib can inhibit the deformation of the two partition ribs intersecting each other, and directly support the two opposite wall surfaces of the cavity in the first direction, thereby further reducing the change in the cross-sectional area of the overcurrent passage.

[0015] In some embodiments, the cavity is further provided with a first connecting rib, and the first connecting rib connects two second reinforcing ribs adjacent in the second direction. In this way, the first connecting rib forms a force transmission path between the two adjacent second reinforcing ribs, so that the two connected second reinforcing ribs can inhibit the deformation of each other.

[0016] In some embodiments, the number of partition ribs is multiple;

[0017] At least two adjacent partition ribs are connected to the same side wall surface of the cavity along the first direction, so that the adjacent partition ribs can inhibit deformation of each other, thereby reducing the change in the size of the cavity along the first direction.

[0018] In addition, along the second direction, the directions of inclination of the two adjacent partition ribs towards the second direction are opposite, so that the partition ribs can better support more areas of the wall surface of the cavity along the second direction and inhibit deformation of the wall surface of the cavity along the first direction in more areas along the second direction.

[0019] In some embodiments, the cavity further comprises a second connecting rib connecting two adjacent partition ribs along the second direction. Thus, the second connecting rib directly forms a force transmission path between the two adjacent partition ribs, so that the two adjacent partition ribs can inhibit deformation of each other, thereby improving the support effect of the partition ribs on the two side wall surfaces of the cavity along the first direction.

[0020] In some embodiments, the number of first reinforcing ribs connected to the same partition rib is at least two, one first reinforcing rib connecting the partition rib and one side wall surface of the cavity along the first direction, and the other first reinforcing rib connecting the partition rib and the other side wall surface of the cavity along the first direction. Thus, both ends of the partition rib along the first direction can be supported and constrained by the first reinforcing ribs, which helps to better inhibit deformation of the partition rib along the first direction.

[0021] In some embodiments, the number of cavities is a plurality, and at least part of the cavities are arranged along the first direction. Thus, even if part of the cavities arranged along the first direction are deformed and blocked due to extrusion, other cavities can still allow the heat management medium to pass through, thereby maintaining the heat management effect on the battery cells.

[0022] In some embodiments, the overflow plate is an integrally formed structure. Thus, on the one hand, it is beneficial to simplify the manufacturing process of the overflow plate, and on the other hand, it is beneficial to improve the overall structural strength of the overflow plate and reduce the deformation caused by extrusion of the battery cell.

[0023] In some embodiments, one end of the overflow plate is inserted into the confluence channel along the third direction through the open position of the confluence channel, and a side wall surface of the confluence channel away from the open position along the third direction is spaced apart from the overflow plate along the third direction. Thus, the confluence channel and each overflow channel are connected in a splicing manner, which helps to improve the assembly efficiency of the heat management assembly.

[0024] In some embodiments, the battery device further includes a first housing and a second housing. The first housing covers the second housing along the first direction and together form an installation space. The battery cell assembly and the thermal management assembly are located within the installation space. The large surface of the battery cell is in contact with the flow plate, and the orientation of the pressure relief mechanism of the battery cell intersects with the first direction. Thus, emissions from the battery cell are less likely to be blocked by the thermal management assembly, which helps to prevent emissions from directly impacting the first and second housings along the first direction, reducing the probability of housing decomposition; it also helps to improve the heat exchange efficiency between the thermal management medium flowing in the flow plate and the battery cell.

[0025] This application also provides an electrical device, characterized in that the electrical device includes the battery device as described in any of the foregoing embodiments.

[0026] Thus, by employing the battery device described in the foregoing embodiments, it is beneficial to improve the thermal management efficiency within the electrical device, thereby extending the service life of the electrical device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of the present application where the electrical device is a vehicle;

[0028] Figure 2 This is an exploded view of the battery cell assembly and thermal management assembly in one embodiment of this application;

[0029] Figure 3 This is a schematic diagram of a thermal management component in one embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the flow plate in the first embodiment of this application;

[0031] Figure 5 for Figure 4 A schematic diagram of the Chinese embodiment from another perspective;

[0032] Figure 6 for Figure 5 A magnified view of a portion of position A in the diagram;

[0033] Figure 7 This is a partial schematic diagram of the flow plate in the second embodiment of this application, and its enlarged portion is located at the same position as... Figure 5 The position of A in them is the same;

[0034] Figure 8 This is a partial schematic diagram of the flow plate in the third embodiment of this application, and its enlarged portion is located at the same position as... Figure 5 The position of A in them is the same;

[0035] Figure 9Figure 8 is a partial enlarged view of the flow plate of the fourth embodiment of the application, the position of the partial enlargement being the same as position A in Figure 7; Figure 5 Figure 9 is a partial enlarged view of the flow plate of the fifth embodiment of the application, the position of the partial enlargement being the same as position A in Figure 8;

[0036] Figure 10 Figure 10 is a partial enlarged view of the flow plate of the sixth embodiment of the application, the position of the partial enlargement being the same as position A in Figure 9; Figure 5 Figure 11 is a partial enlarged view of the flow plate of the seventh embodiment of the application, the position of the partial enlargement being the same as position A in Figure 10;

[0037] Figure 11 Figure 12 is a partial enlarged view of the flow plate of the eighth embodiment of the application, the position of the partial enlargement being the same as position A in Figure 11; Figure 5 Figure 13 is an exploded view of the current collecting plate, the stop ring and the sealing ring of an embodiment of the application; Figure 14 is a partial view of the current collecting plate, the stop ring and the sealing ring of an embodiment of the application after assembly;

[0038] Figure 15 is an exploded view of the battery monomer assembly and the structural adhesive of an embodiment of the application; Figure 12 Figure 16 is an exploded view of the battery device of an embodiment of the application. Figure 5 Figure 17 is a schematic view of the reference signs.

[0039] Figure 13 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, box; 10a, mounting space; 11, first box; 12, second box; 13, side beam; 20, battery monomer assembly; 21, battery monomer; 211, pressure relief mechanism; 22, partition assembly; 22a, mounting cavity; 30, thermal management assembly; 30a, cavity; 30b, flow passage; 30c, first region; 30d, second region; 31, partition rib; 32, first reinforcing rib; 33, second reinforcing rib; 34, first connecting rib; 35, second connecting rib; 36, partition plate; 37, flow plate; 38, current collecting plate; 38a, flow passage; 38b, stop surface; 381, positioning protrusion; 390, stop ring; 391, sealing ring; 40, structural adhesive. Figure 5

[0040] Figure 14

[0041] Figure 15

[0042] Figure 16

[0043] Figure 17

[0044] Figure 17 is a schematic view of the reference signs.

[0045] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, box; 10a, mounting space; 11, first box; 12, second box; 13, side beam; 20, battery monomer assembly; 21, battery monomer; 211, pressure relief mechanism; 22, partition assembly; 22a, mounting cavity; 30, thermal management assembly; 30a, cavity; 30b, flow passage; 30c, first region; 30d, second region; 31, partition rib; 32, first reinforcing rib; 33, second reinforcing rib; 34, first connecting rib; 35, second connecting rib; 36, partition plate; 37, flow plate; 38, current collecting plate; 38a, flow passage; 38b, stop surface; 381, positioning protrusion; 390, stop ring; 391, sealing ring; 40, structural adhesive. ​​​DETAILED DESCRIPTION

[0046] It should be noted that the embodiments and technical features in the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application, and should not be regarded as an improper limitation on the present application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the terms "comprising" and "having," and any variations thereof, as used herein are intended to cover a non-exclusive inclusion.

[0048] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0051] In the description of the embodiments of the present application, for the convenience of description, as shown in the drawings of the specification, the direction of the arrow X is "the first direction", the direction of the arrow Y is "the second direction", and the direction of the arrow Z is "the third direction".

[0052] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two contacting objects without interaction force, or contact between two contacting objects with interaction force.

[0054] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

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

[0056] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator is arranged between the negative electrode and the positive electrode. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator arranged between the positive electrode and the negative electrode can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0057] The electrode assembly can be a winding structure, a laminated structure, or a hybrid structure of winding and laminating.

[0058] In some embodiments, the electrode assembly is a winding structure. The positive electrode sheet and the negative electrode sheet are wound into a winding structure.

[0059] In some embodiments, the electrode assembly is a laminated structure.

[0060] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets can be arranged alternately.

[0061] As an example, a plurality of positive electrode sheets can be arranged, and the negative electrode sheet is folded to form a plurality of folded segments arranged in layers, and one positive electrode sheet is clamped between adjacent folded segments.

[0062] As an example, the positive electrode sheet and the negative electrode sheet are each folded to form a plurality of folded segments that are stacked.

[0063] As an example, a plurality of separators can be provided, each provided between any adjacent positive electrode sheet or negative electrode sheet.

[0064] As an example, the separators can be provided continuously, by being folded or wound between any adjacent positive electrode sheet or negative electrode sheet.

[0065] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a multi-prism shape, etc.

[0066] In some embodiments, the electrode assembly is provided with tabs, which can conduct current out of the electrode assembly. The tabs include positive tabs and negative tabs.

[0067] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to the tabs. The electrode terminal can be directly connected to the tabs, or indirectly connected to the tabs through a current collecting member. The electrode terminal can be provided on the end cap, or on the housing.

[0068] In some embodiments, the battery cell can include a housing. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc. In some embodiments, the housing can be a sealed structure, or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing serves to protect the electrode assembly, and the housing and the electrode assembly further include a sealing bag, which is used to package the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating member or an aluminum-plastic film. When the housing is a sealed structure, it is used to package the electrode assembly and the electrolyte, etc.

[0069] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes, including a square battery cell, a blade battery cell, a multi-prismatic battery cell (such as a hexagonal battery cell), etc., without specific limitation.

[0070] In some embodiments, the housing includes an end cap and a housing body, the housing body is provided with an opening, and the end cap is provided on the opening. The housing body can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0071] In some embodiments, the housing is provided with a pressure relief mechanism. The pressure relief mechanism is used to discharge the internal gas of the battery cell.

[0072] As an example, the internal pressure or temperature of the battery cell reaches a predetermined threshold value, and the pressure relief mechanism is actuated to release the internal pressure or temperature. When the internal pressure or temperature of the battery cell reaches the predetermined threshold value, the pressure relief mechanism performs an action or a weak structure provided in the pressure relief mechanism is broken, thereby forming an opening or a passage for the internal pressure or temperature to be released. The threshold value is designed differently according to design requirements. The threshold value can depend on the material of one or more of the positive plate, the negative plate, the electrolyte, and the separator in the battery cell.

[0073] As an example, the pressure relief mechanism can be integrally formed with the housing.

[0074] As an example, the pressure relief mechanism can also be provided separately from the housing and connected.

[0075] As referred to in this application, "actuation" means that the pressure relief mechanism performs an action or is activated to a certain state, so that the internal pressure and temperature of the battery cell can be released. The action performed by the pressure relief mechanism can include, but is not limited to, movement of a component in the pressure relief mechanism to form an exhaust passage, at least a portion of the pressure relief mechanism being broken, shattered, torn, or opened, and the like. When the pressure relief mechanism is actuated, the high-temperature and high-pressure substances inside the battery cell are discharged as exhaust from the actuated part. In this way, the battery cell can be released at a controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0076] In some embodiments, when the housing is a non-sealed structure, the pressure relief mechanism can be provided as a through hole for discharging the gas inside the battery cell.

[0077] As referred to in this application, the exhaust from the battery cell includes, but is not limited to, electrolyte, dissolved or split positive and negative plates, fragments of the separator, high-temperature and high-pressure gas generated by reaction, flame, and the like.

[0078] The battery device as referred to in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a busbar.

[0079] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0080] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0081] In some embodiments, the battery device can be a battery pack including a box and one or more battery cell assemblies accommodated in the box.

[0082] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the case by fixing the battery module in the case.

[0083] As an example, the battery cell assembly can also be accommodated in the case by fixing a plurality of battery cells directly to the case.

[0084] In some embodiments, the case can be part of a chassis structure of a vehicle. For example, part of the case can be at least part of a floor of the vehicle, or part of the case can be at least part of a cross beam and a longitudinal beam of the vehicle.

[0085] As an example, the case can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that an enclosed space is formed inside the case to accommodate the battery cell assembly.

[0086] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships, and spacecraft, such as aircraft, rockets, space shuttles, and spacecraft.

[0087] In the following embodiments, for the convenience of description, the electric device of an embodiment of the present application is taken as a vehicle 1000 for example. The following is described with reference to the accompanying drawings.

[0088] The vehicle 1000 can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car. As shown in Figure 1 The vehicle 1000 can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car. As shown in

[0089] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0090] The embodiments of the present application will be described in detail below.

[0091] In the related art, a battery device includes battery cells and a thermal management assembly, the thermal management assembly is provided with channels for the flow of a thermal management medium. The thermal management assembly is in contact with the battery cells to enable the thermal management medium to exchange heat with the battery cells, thereby continuously absorbing or releasing heat from the battery cells to keep the temperature of the battery cells within a preset working temperature range, so that the battery cells can more efficiently realize the charging and discharging functions and prolong the service life of the battery cells.

[0092] Due to the influence of factors such as the placement of the battery cells, the constraints exerted by the fasteners in the battery device, etc., the forces such as the gravity and extrusion force of the battery cells act on the thermal management assembly, causing the structure of the thermal management assembly to deform, and further causing the channels in the thermal management assembly to deform, shrink, or block, etc., which negatively affects the flow of the thermal management medium in the channels and is not conducive to meeting the design requirements for the thermal management of the battery cells.

[0093] Based on the above technical problems, the embodiments of the present application aim to provide a battery device and a power utilization device, wherein the battery device is provided with a partition rib in a cavity of the thermal management assembly to form at least two flow channels arranged along a second direction, a portion of the partition rib is inclined toward one side of the second direction, and another portion is inclined toward the other side, and / or the cavity is further provided with a first reinforcing rib, the first reinforcing rib connects the partition rib and the wall surface of the cavity, and the first reinforcing rib and the partition rib are respectively inclined toward different sides of the second direction. In this way, the ability of the thermal management assembly to resist the force exerted by the battery cells in the first direction is improved, and the negative impact of the deformation of the thermal management assembly on the delivery of the thermal management medium is reduced.

[0094] Specifically, referring to Figures 2 to 7 The embodiments of the present application provide a battery device 100, which includes a battery cell assembly 20 and a thermal management assembly 30.

[0095] The battery cell assembly 20 includes battery cells 21.

[0096] The thermal management assembly 30 includes a flow plate 37 and two current collecting plates 38, the flow plate 37 is arranged on one side of the battery cell assembly 20 along a first direction and is attached to the battery cells 21, the flow plate 37 is provided with a cavity 30a, the cavity 30a is provided with a partition rib 31, the partition rib 31 connects the two side walls of the cavity 30a along the first direction and divides the cavity 30a into at least two flow channels 30b arranged along a second direction, the two current collecting plates 38 are respectively located on both sides of the flow plate 37 along a third direction, the first direction, the second direction and the third direction intersect with each other, the current collecting plate 38 is provided with a flow collection channel 38a, the flow collection channel 38a is open on one side along the third direction and communicates with the flow channel 30b, and the flow collection channel 38a communicates with the outside of the thermal management assembly 30.

[0097] The number of the partition ribs 31 is multiple, in the first direction, a part of the partition ribs 31 is inclined to one side of the second direction, another part of the partition ribs 31 is inclined to the other side; and / or, the first reinforcing ribs 32 are further arranged in the cavity 30a, the first reinforcing ribs 32 are connected between the partition ribs 31 and the wall surface of the cavity 30a, in the first direction, the partition ribs 31 are inclined to one side of the second direction, the first reinforcing ribs 32 are inclined to the other side.

[0098] The number of the battery cells 21 in the battery cell assembly 20 can be one or multiple.

[0099] The thermal management assembly 30 is attached to the battery cell 21 to form a heat transfer path between them.

[0100] The over-flow channel 30b is used for the flow of the thermal management medium. The thermal management medium can release or absorb heat from the battery cell 21 through the heat transfer path between the thermal management assembly 30 and the battery cell 21, and the flow of the thermal management medium in the over-flow channel 30b ensures that new thermal management medium is constantly in thermal exchange with the battery cell 21 to keep the temperature of the battery cell 21 within a suitable range.

[0101] The thermal management medium is a fluid medium, and its specific type is not limited, for example, water, etc.

[0102] It can be understood that the space of the over-flow channel 30b is part of the space of the cavity 30a.

[0103] The battery cell assembly 20 can apply a force to the over-flow plate 37 in the first direction. The partition ribs 31 connect the opposite wall surfaces of the cavity 30a in the first direction, thereby supporting the wall surfaces of the cavity 30a in the first direction, reducing the risk of the wall surfaces of the cavity 30a in the first direction being close to each other under the force of the battery cell assembly 20 in the first direction, and thus reducing and blocking the over-flow channel 30b.

[0104] The over-flow channel 30b is formed by the partition ribs 31 and the wall surfaces of the cavity 30a.

[0105] One part of the partitioning ribs 31 is inclined toward one side in the second direction, and another part of the partitioning ribs 31 is inclined toward another side. Both the two parts of the partitioning ribs 31 are inclined, and can decompose the force in the first direction into a component along the inclined extension direction of the partitioning ribs 31 and a component along the second direction. The two parts of the partitioning ribs 31 are inclined toward different sides in the second direction, so that the directions of the components along the second direction of the two parts of the partitioning ribs 31 are opposite, and thus the deformation of the two parts of the partitioning ribs 31 in the second direction can be inhibited by the wall surface of the cavity 30a in the first direction, and the overall deformation of the partitioning ribs 31 is reduced, and thus the deformation of the wall surface of the cavity 30a in the first direction in the first direction is reduced.

[0106] The force received by the partitioning ribs 31 can be transmitted to the first reinforcing ribs 32. Both the partitioning ribs 31 and the first reinforcing ribs 32 are inclined, and can decompose the force in the first direction into a component along the inclined extension direction of the partitioning ribs 31 and a component along the second direction. The two parts of the partitioning ribs 31 are inclined toward different sides in the second direction, so that the directions of the components along the second direction of the two parts of the partitioning ribs 31 are opposite, and thus the deformation of the two parts of the partitioning ribs 31 in the second direction can be inhibited by the wall surface of the cavity 30a in the first direction, and the overall deformation of the partitioning ribs 31 is reduced, and thus the deformation of the wall surface of the cavity 30a in the first direction in the first direction is reduced.

[0107] The battery device 100 in the embodiments can inhibit the deformation of the partitioning ribs 31 due to the force of the battery monomer assembly 20, so as to reduce the change of the cross-sectional area of the overcurrent passage 30b caused by the deformation of the partitioning ribs 31, reduce the probability of the cross-sectional area of the overcurrent passage 30b being reduced and blocked due to the deformation, facilitate the flow of the thermal management medium in the overcurrent passage 30b to meet the demand, improve the thermal management efficiency of the battery monomer 21, and prolong the service life of the battery device 100. The two current collecting plates 38 can make the thermal management medium entering the current collecting passage 38a from outside dispersed into each overcurrent passage 30b, and after heat exchange, the thermal management medium in each overcurrent passage 30b converges into another current collecting passage 38a, so as to facilitate the centralized supply and recovery of the thermal management medium in the thermal management assembly 30.

[0108] It can be understood that the openings of the overcurrent passages 30b in the overcurrent plate 37 along the same side in the third direction are all communicated with the current collecting passage 38a of the same current collecting plate 38.

[0109] In some embodiments, the first direction is perpendicular to the second direction.

[0110] In some embodiments in which the number of partitioning ribs 31 is multiple, the number of partitioning ribs 31 in the two portions can be the same or different.

[0111] In some embodiments in which the number of partitioning ribs 31 is multiple, some of the partitioning ribs 31 can be provided with the first reinforcing rib 32, or all of the partitioning ribs 31 can be provided with the first reinforcing rib 32.

[0112] In some embodiments in which the first reinforcing rib 32 is provided, a single partitioning rib 31 can be connected to one first reinforcing rib 32 or multiple first reinforcing ribs 32.

[0113] In some embodiments in which the number of partitioning ribs 31 is multiple, referring to Figure 8 and Figure 9 , the number of partitioning ribs 31 is multiple, and at least two partitioning ribs 31 are arranged to cross each other.

[0114] In this way, the deformation of each partitioning rib 31 is constrained by the other partitioning rib 31, so that the deformation of each partitioning rib 31 is constrained by the other partitioning rib 31, which is conducive to reducing the change in the cross-sectional area of the flow passage 30b caused by the deformation of the partitioning rib 31.

[0115] The specific number of partitioning ribs 31 crossing each other is not limited and can be two, three, four, etc.

[0116] It can be understood that the crossing region between each partitioning rib 31 crossing each other is spaced from the wall surface of the cavity 30a along the first direction.

[0117] In some embodiments, referring to Figure 8 , of the partitioning ribs 31 arranged to cross each other, at least two partitioning ribs 31 are inclined to different sides of the second direction, respectively.

[0118] In this way, it is conducive to more effectively inhibiting the deformation of the partitioning rib 31.

[0119] In some embodiments, referring to Figure 8 and Figure 9 , the cavity 30a is further provided with a second reinforcing rib 33, and the second reinforcing rib 33 connects the two partitioning ribs 31 crossing each other.

[0120] In this way, the deformation of the two partitioning ribs 31 arranged to cross each other can be effectively inhibited by the second reinforcing rib 33, which is conducive to further reducing the change in the cross-sectional area of the flow passage 30b caused by the deformation of the partitioning rib 31.

[0121] The specific number of second reinforcing ribs 33 arranged between the two partitioning ribs 31 crossing each other is not limited and can be one, two, three, four, etc.

[0122] In some embodiments, the second reinforcing rib 33 includes a first sub-rib connecting two partition ribs 31 intersecting each other in the first direction.

[0123] In some embodiments, the second reinforcing rib 33 includes a second sub-rib connecting two partition ribs 31 intersecting each other in the second direction.

[0124] In this way, by the first sub-rib and the second sub-rib, the deformation of the two partition ribs 31 intersecting each other in the first direction and the second direction respectively can be inhibited.

[0125] In some embodiments, referring to Figure 8 , the connecting position of the second reinforcing rib 33 and the partition rib 31 is a first region 30c, and the connecting position of the partition rib 31 and the side wall surface of the cavity 30a in the first direction is a second region 30d, and the first region 30c coincides with the second region 30d.

[0126] In this way, the second reinforcing rib 33 can inhibit the deformation of the two partition ribs 31 intersecting each other while directly supporting the two side wall surfaces of the cavity 30a opposite in the first direction, which is conducive to further reducing the change of the cross-sectional area of the overflow passage 30b.

[0127] In some embodiments, referring to Figure 8 and Figure 9 , the cross-sectional shape of the second reinforcing rib 33 is arc-shaped, so as to reduce the probability of damage of the second reinforcing rib 33 due to stress concentration and prolong its service life.

[0128] In some embodiments, referring to Figure 8 and Figure 9 , each of the partition ribs 31 intersecting each other is in a group, and the partition ribs 31 in each group are arranged in the second direction.

[0129] In some embodiments, referring to Figure 9 , the cavity 30a is further provided with a first connecting rib 34, and the first connecting rib 34 connects two second reinforcing ribs 33 adjacent in the second direction.

[0130] In this way, the first connecting rib 34 forms a force transmission path between the two adjacent second reinforcing ribs 33, so that the two connected second reinforcing ribs 33 can inhibit the deformation of each other.

[0131] The number of the first connecting rib 34 connected by the two second reinforcing ribs 33 adjacent in the second direction is not limited, which can be one or multiple.

[0132] In some embodiments, referring to Figure 9 , the first connecting rib 34 extends in the second direction, which is conducive to improving the force transmission effect of the first connecting rib 34 in the second direction.

[0133] In some embodiments in which the number of the partitioning ribs 31 is plural, referring to Figure 10 , at least two adjacent partitioning ribs 31 each have the same connection position with the same side wall surface of the cavity 30a along the first direction.

[0134] That is, the two adjacent partitioning ribs 31 can directly form a force transmission path therebetween.

[0135] In this way, the two adjacent partitioning ribs 31 can inhibit the deformation of each other, so as to reduce the change of the size of the cavity 30a along the first direction.

[0136] In some embodiments in which the number of the partitioning ribs 31 is plural, referring to Figure 6 and Figure 10 , along the second direction, any two adjacent partitioning ribs 31 are opposite to each other in the direction of tilting toward the second direction.

[0137] In this way, the partitioning ribs 31 can better support more areas of the wall surface of the cavity 30a along the second direction, and inhibit the deformation of the wall surface of the cavity 30a along the first direction.

[0138] In some embodiments, referring to Figure 11 , the cavity 30a is further provided with a second connecting rib 35, and the second connecting rib 35 connects two adjacent partitioning ribs 31 along the second direction.

[0139] In this way, the second connecting rib 35 directly forms a force transmission path between the two adjacent partitioning ribs 31, so that the two adjacent partitioning ribs 31 can inhibit the deformation of each other, thereby improving the support effect of the partitioning ribs 31 on the two side wall surfaces of the cavity 30a along the first direction.

[0140] In some embodiments in which the at least two partitioning ribs 31 are arranged to cross each other, referring to Figure 11 , the second connecting rib 35 is connected with the crossing position of the partitioning ribs 31.

[0141] In this way, the deformation of the partitioning ribs 31 arranged to cross each other can be better inhibited, and the support effect of the partitioning ribs 31 on the two side wall surfaces of the cavity 30a along the first direction is improved.

[0142] In some embodiments, referring to Figure 11 , the second connecting rib 35 extends along the second direction, which is conducive to improving the force transmission effect of the second connecting rib 35 along the second direction.

[0143] In some embodiments provided with the first reinforcing rib 32, referring to Figure 7The number of the first reinforcing ribs 32 connected with the same partition rib 31 is at least two. One of the first reinforcing ribs 32 is connected with the partition rib 31 and a side wall of the cavity 30a along the first direction. The other of the first reinforcing ribs 32 is connected with the partition rib 31 and another side wall of the cavity 30a along the first direction.

[0144] In this way, both ends of the partition rib 31 along the first direction can be supported and constrained by the first reinforcing ribs 32, which is conducive to better inhibiting the deformation of the partition rib 31 along the first direction.

[0145] It can be understood that, referring to Figure 7 Among the first reinforcing ribs 32 connected with the partition rib 31, one part of the first reinforcing ribs 32 is located on one side of the partition rib 31 along the second direction, and the other part of the first reinforcing ribs 32 is located on the other side of the partition rib 31 along the second direction.

[0146] In some embodiments, referring to the drawings, the number of the cavities 30a is multiple.

[0147] In this way, even if some of the cavities 30a are blocked or the like, the other cavities 30a can still allow the heat management medium to pass through, which is conducive to prolonging the service life of the heat management assembly 30.

[0148] The specific number of the cavities 30a can be one, two, three, four, etc.

[0149] In some embodiments in which the number of the cavities 30a is multiple, referring to the drawings, at least part of the cavities 30a are arranged along the first direction.

[0150] In this way, even if some of the cavities 30a arranged along the first direction are deformed and blocked due to extrusion, the other cavities 30a can still allow the heat management medium to pass through, thereby maintaining the heat management effect on the battery monomer 21.

[0151] In some embodiments, referring to Figure 12 and Figure 13 The partition plate 36 in the heat management assembly 30 extends along the second direction to divide the heat management assembly 30 into at least two cavities 30a arranged along the first direction.

[0152] In some embodiments, the first direction, the second direction, and the third direction are perpendicular to each other.

[0153] In some embodiments, referring to Figure 3 and Figure 14The one end of the flow plate 37 is inserted into the confluence channel 38a along the third direction through the open position of the confluence channel 38a, and the side wall surface of the confluence channel 38a away from the open position along the third direction is spaced from the flow plate 37 along the third direction. In this way, the communication between the confluence channel 38a and each flow channel 30b is achieved in a splicing manner, which is beneficial to improve the assembly efficiency of the thermal management assembly 30.

[0154] In some embodiments, the flow plate 37 and the confluence plate 38 are both made of metal materials, and the two can be fixed and sealed by welding.

[0155] In some embodiments, referring to Figure 14 and Figure 15 A part of the confluence plate 38 protrudes in the second direction to form a positioning protrusion 381, and an opening is arranged on the end surface of the positioning protrusion 381 along the third direction. The opening communicates the confluence channel 38a with the outside of the thermal management assembly 30. The thermal management assembly 30 further comprises a stop ring 390 and a sealing ring 391. The stop ring 390 and the sealing ring 391 are both sleeved on the circumferential side of the positioning protrusion 381 perpendicular to the third direction. The circumferential side of the positioning protrusion 381 perpendicular to the third direction is provided with a stop surface 38b, and the sealing ring 391 is clamped between the stop ring 390 and the stop surface 38b.

[0156] In this way, the stop ring 390 and the stop surface 38b can limit the sealing ring 391 in the second direction, reducing the risk of the sealing ring 391 falling out during the splicing of the thermal management assembly 30.

[0157] In some embodiments, the flow channel 30b extends linearly along the third direction. In this way, the thermal management medium in the flow channel 30b can flow linearly, which is beneficial to keep the flow rate of the thermal management medium within a suitable range and maintain the heat exchange efficiency between the thermal management medium and the battery monomer 21.

[0158] In some embodiments, the partition rib 31 extends linearly along the third direction, so that the formed flow channel 30b extends linearly along the third direction.

[0159] In some embodiments, the first reinforcing rib 32 extends along the third direction; in some embodiments, the second reinforcing rib 33 extends along the third direction; in some embodiments, the first connecting rib 34 extends along the third direction; and in some embodiments, the second connecting rib 35 extends along the third direction.

[0160] In some embodiments, the flow plate 37 is an integrally formed structure.

[0161] That is, the first reinforcing rib 32 and the partition rib 31 are different parts of the single part of the flow plate 37.

[0162] In this way, on the one hand, the manufacturing process of the flow plate 37 is simplified, and on the other hand, the overall structural strength of the flow plate 37 is improved, and the deformation of the flow plate 37 under the extrusion of the battery monomer 21 is reduced.

[0163] The one-piece forming process of the flow plate 37 is not limited. For example, the material of the flow plate 37 is an aluminum alloy, and the blank of the aluminum alloy material is extruded into the flow plate 37 through a mold with a corresponding shape in the third direction. It can be understood that the first reinforcing rib 32 and the partition rib 31 are synchronously formed in the extrusion process.

[0164] The current collector plate 38 is manufactured by an extrusion or forging process, and the current collector channel 38a is formed on one side in the third direction by machining.

[0165] In some embodiments, the large surface of the battery monomer 21 is in contact with the thermal management assembly 30 to improve the thermal management efficiency between the two.

[0166] The large surface of the battery monomer 21 refers to the surface with the largest area among the outer surfaces of the battery monomer 21.

[0167] In some embodiments, referring to Figure 2 The number of thermal management assemblies 30 is multiple, each thermal management assembly 30 is arranged in the first direction, and the battery monomer assembly 20 is clamped between two adjacent thermal management assemblies 30 in the first direction.

[0168] In this way, the thermal management effect on the battery monomer assembly 20 is further improved.

[0169] In some embodiments, the first direction is the direction of gravity.

[0170] In some embodiments, referring to Figure 2 A structural adhesive 40 is provided between the battery monomer assembly 20 and the thermal management assembly 30 to bond the two through the structural adhesive 40, fix the relative positions between the two, and delay the heat spread time.

[0171] In some embodiments, referring to Figure 16 The battery monomer assembly 20 further comprises a partition assembly 22, the partition assembly 22 is provided with a plurality of mounting cavities 22a, the battery monomer 21 is located in the mounting cavity 22a, the mounting cavity 22a is open on at least one side in the first direction, and the thermal management assembly 30 covers the open position of the mounting cavity 22a in the first direction.

[0172] In this way, each battery monomer 21 is isolated from each other by the partition assembly 22, and the heat exchange between each battery monomer 21 is reduced.

[0173] In some embodiments, referring to Figure 16The mounting cavity 22a is open on both sides along the first direction, so that the battery cell 21 can be in contact with the heat management assembly 30 on both sides along the first direction.

[0174] The specific material of the partition assembly 22 is not limited, for example, aerogel, etc., to reduce the thermal conductivity coefficient of the partition assembly 22 itself, and further reduce the heat exchange between the battery cells 21.

[0175] Some embodiments, referring to Figure 2 、 Figure 16 and Figure 17 , the battery device 100 further comprises a box 10, the box 10 comprises a first box 11 and a second box 12, the first box 11 and the second box 12 are matched to form a mounting space 10a along the first direction, the battery cell assembly 20 and the heat management assembly 30 are located in the mounting space 10a, and the direction of the pressure relief mechanism 211 of the battery cell 21 is perpendicular to the first direction.

[0176] In this way, the exhaust produced by the battery cell 21 is difficult to be blocked by the heat management assembly 30, which is beneficial to make the exhaust difficult to directly impact the first box 11 and the second box 12 along the first direction, and reduces the probability of decomposition of the box 10.

[0177] Some embodiments, the direction of the pressure relief mechanism 211 of the battery cell 21 is perpendicular to the first direction.

[0178] Some embodiments, the large surface of the battery cell 21 is attached to the overflow plate 37.

[0179] In this way, it is beneficial to improve the heat exchange efficiency between the heat management medium flowing in the overflow plate 37 and the battery cell 21.

[0180] Some embodiments, the inner wall of the mounting space 10a is provided with a boundary beam 13, and the boundary beam 13 is surrounded to form a conveying channel, the conveying channel is in communication with the heat management assembly 30 and the outside of the battery device 100, so as to convey and recover the heat exchange medium through the outside. The conveying channel is located inside the boundary beam 13, which is beneficial to improve the space utilization rate in the battery device 100.

[0181] The battery cell 21 in a specific embodiment of the present application is described as follows:

[0182] A battery device 100 comprises a battery cell assembly 20 and a thermal management assembly 30, the battery cell assembly 20 comprises battery cells 21, the thermal management assembly 30 comprises an overcurrent plate 37 and two current collecting plates 38, the overcurrent plate 37 is arranged on one side of the battery cell assembly 20 along a first direction and is attached to the battery cells 21, the overcurrent plate 37 is provided with a cavity 30a, the cavity 30a is provided with a partition rib 31, the partition rib 31 connects two side walls of the cavity 30a along the first direction and divides the cavity 30a into at least two overcurrent channels 30b arranged along a second direction, the first direction intersects the second direction; the number of partition ribs 31 is multiple, along the first direction, part of the partition ribs 31 are inclined to one side of the second direction, and the other part of the partition ribs 31 are inclined to the other side; and / or, the cavity 30a is further provided with a first reinforcing rib 32, the first reinforcing rib 32 connects the partition rib 31 and the wall surface of the cavity 30a, along the first direction, the partition rib 31 is inclined to one side of the second direction, and the first reinforcing rib 32 is inclined to the other side. The number of partition ribs 31 is multiple, and at least two partition ribs 31 are arranged intersecting each other. The cavity 30a is further provided with a second reinforcing rib 33, the second reinforcing rib 33 connects two partition ribs 31 intersecting each other. The connection position of the second reinforcing rib 33 and the partition rib 31 is a first area 30c, the connection position of the partition rib 31 and the side wall of the cavity 30a along the first direction is a second area 30d, the first area 30c coincides with the second area 30d. The cavity 30a is further provided with a first connecting rib 34, the first connecting rib 34 connects two second reinforcing ribs 33 adjacent along the second direction. The number of partition ribs 31 is multiple; at least two adjacent partition ribs 31 each have the same connection position with the same side wall of the cavity 30a along the first direction; and / or, along the second direction, the directions of the two adjacent partition ribs 31 inclined to the second direction are opposite. The cavity 30a is further provided with a second connecting rib 35, the second connecting rib 35 connects two partition ribs 31 adjacent along the second direction. The number of first reinforcing ribs 32 connected with the same partition rib 31 is at least two, one first reinforcing rib 32 connects the partition rib 31 and the side wall of the cavity 30a along the first direction, and the other first reinforcing rib 32 connects the partition rib 31 and the other side wall of the cavity 30a along the first direction. The number of cavities 30a is multiple, and at least part of the cavities 30a are arranged along the first direction. The two current collecting plates 38 are respectively located on both sides of the overcurrent plate 37 along a third direction, the first direction, the second direction and the third direction intersect each other, the current collecting plate 38 is provided with a current collecting channel 38a, the current collecting channel 38a is open on one side along the third direction and communicates with the overcurrent channel 30b, and the current collecting channel 38a communicates with the outside of the thermal management assembly 30.The flow plate 37 is of an integral molding type structure, one end of the flow plate 37 is inserted into the flow collection channel 38a along the third direction through the open position of the flow collection channel 38a, the side wall of the flow collection channel 38a along the third direction away from the open position is spaced from the flow plate 37 along the third direction, the battery device 100 further comprises a box body 10, the box body 10 comprises a first box body 11 and a second box body 12, the first box body 11 and the second box body 12 are matched to form a mounting space 10a along the first direction, the battery monomer assembly 20 and the thermal management assembly 30 are both located in the mounting space 10a, the direction of the pressure relief mechanism 211 of the battery monomer 21 is intersected with the first direction, and the large surface of the battery monomer 21 is attached to the flow plate 37.

[0183] The embodiments of the present application also provide a power utilization device, which comprises the battery device 100 of any one of the foregoing embodiments.

[0184] Therefore, by using the battery device in the foregoing embodiments, the thermal management efficiency in the power utilization device is improved, and the service life of the power utilization device is prolonged.

[0185] The various embodiments / implementation manners provided by the present application can be combined with each other without contradiction.

[0186] The above is only a preferred embodiment of the present application and is not used to limit the embodiments in the present application. The embodiments of the present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A battery device, characterized by, The battery cell assembly comprises a battery cell, and a thermal management assembly comprising a flow plate and two current collector plates, the flow plate is arranged on one side of the battery cell assembly along a first direction and is attached to the battery cell, the flow plate is provided with a cavity, a partition rib is arranged in the cavity, the partition rib connects two opposite side walls of the cavity along the first direction and divides the cavity into at least two flow channels arranged along a second direction, the two current collector plates are respectively arranged on two sides of the flow plate along a third direction, the first direction, the second direction and the third direction intersect with each other, a flow channel is arranged in the current collector plate, the flow channel is open on one side along the third direction and communicates with the flow channel, and the flow channel communicates with the outside of the thermal management assembly. The number of partition ribs is multiple, and a part of the partition ribs are inclined to one side along the second direction, and another part of the partition ribs are inclined to the other side along the first direction. And / or, the cavity is further provided with a first reinforcing rib, the first reinforcing rib connects the partition rib and the wall of the cavity, and along the first direction, the partition rib is inclined to one side along the second direction, and the first reinforcing rib is inclined to the other side. The number of partition ribs is multiple, and at least two partition ribs are arranged intersecting with each other. The cavity is further provided with a second reinforcing rib, and the second reinforcing rib connects two partition ribs intersecting with each other.

2. The battery device according to claim 1, characterized by The connection position of the second reinforcing rib and the partition rib is a first area, the connection position of the partition rib and the side wall of the cavity along the first direction is a second area, and the first area coincides with the second area.

3. The battery device of claim 2, wherein, The cavity is further provided with a first connecting rib, and the first connecting rib connects two second reinforcing ribs adjacent along the second direction.

4. The battery device of claim 3, wherein The number of partition ribs is multiple.

5. The battery device of claim 3, wherein At least two adjacent partition ribs are respectively connected to the same side wall of the cavity along the first direction.

6. The battery device of claim 1, wherein And / or, along the second direction, the directions of the two adjacent partition ribs inclined to the second direction are opposite. The cavity is further provided with a second connecting rib, and the second connecting rib connects two partition ribs adjacent along the second direction. The number of first reinforcing ribs connected to the same partition rib is at least two, one first reinforcing rib connects the partition rib and one side wall of the cavity along the first direction, and the other first reinforcing rib connects the partition rib and the other side wall of the cavity along the first direction.

7. The battery device according to any one of claims 1 to 6, wherein The number of cavities is multiple, and at least part of the cavities are arranged along the first direction.

8. The battery device according to any one of claims 1 to 6, wherein The flow plate is an integral structure.

9. The battery device according to any one of claims 1 to 6, wherein One end of the flow plate is inserted into the flow channel along the third direction through the open position of the flow channel, and the side wall of the flow channel away from the open position along the third direction is spaced from the flow plate along the third direction.

10. The battery device of claim 1, wherein, ​ 11. The battery device of claim 1, wherein ​ 12. The battery device of claim 1, wherein, The battery device further comprises a box body, the box body comprises a first box body and a second box body, the first box body and the second box body are matched to form a mounting space along the first direction, the battery cell assembly and the thermal management assembly are located in the mounting space, a large surface of the battery cell is attached to the overflow plate, and an orientation of a pressure relief mechanism of the battery cell intersects the first direction.

13. An electrical device, comprising: The power consuming device comprises the battery device according to any one of claims 1-12.

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