Battery device and electric device

Abstract

The utility model relates to the technical field of battery structures, and provides a battery device and a power utilization device.The battery device comprises a first box body and a plurality of battery monomer modules, a first area of a bottom plate is used for bearing soft package battery monomers of the battery monomer modules, a first flow channel is formed below the first area, and a concave first locking part is arranged in a second area of the bottom plate; a first connecting piece penetrates through a connecting hole of a first component of the battery monomer module and is locked into a first locking part so as to lock the first component on the bottom plate, meanwhile, a third component is arranged in the first area and is positioned between the first area and the soft package battery monomer, and the third component is a heat conducting pad; according to the battery device provided by the embodiment of the invention, the third component does not have mobility, so that the influence of the third component on the first locking part at the second area is relatively low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and particularly provides a battery device and a power utilization device. BACKGROUND

[0002] With the development of new energy technology, batteries are increasingly widely used, such as in mobile phones, notebook computers, electric vehicles, electric cars, electric aircraft, electric ships, electric toy cars, electric toy ships, electric tools, and the like.

[0003] The battery device includes a box body and a battery monomer. In the related art, in order to improve the heat dissipation efficiency of the battery monomer, the bottom plate of the box body is usually made of a heat exchange plate, and a heat-conducting adhesive is coated on the bottom plate to form a heat exchange connection between the battery monomer and the bottom plate. However, since the heat-conducting adhesive has a fluid structure, the heat-conducting adhesive may overflow, so that the adhesive flows into the groove structure of the bottom plate, thereby affecting the connection and assembly of the bottom plate and other structural components. UTILITY MODEL CONTENT

[0004] The purpose of the embodiments of the present application is to provide a battery device and a power utilization device, and to solve the problem that the adhesive coated on the bottom plate of the box body affects the connection and assembly of the bottom plate due to its fluidity.

[0005] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:

[0006] In a first aspect, the embodiments of the present application provide a battery device, which includes a first box body and a plurality of battery monomer modules. The first box body includes a surrounding frame and a bottom plate connected to each other to form an accommodation space, and the plurality of battery monomer modules are located in the accommodation space. The battery monomer module includes two first components arranged opposite to each other along a first direction and two second components arranged opposite to each other along a second direction. The two first components and the two second components jointly enclose a limiting space. The battery monomer module further includes a plurality of soft-pack battery monomers stacked along the first direction in the limiting space. The first direction is perpendicular to the second direction. A surface of the bottom plate facing the soft-pack battery monomers includes a first region and a second region. The first region is used to support the soft-pack battery monomers and has a first flow channel arranged below. The first flow channel is used to accommodate a heat exchange medium. The second region is provided with a first locking portion recessed downward. A connecting hole is arranged on the first component. The battery device further includes a first connecting member. The first connecting member is locked to the first locking portion by penetrating the connecting hole, so as to lock the first component to the bottom plate. The battery device further includes a third component. The third component is arranged in the first region and located between the first region and the soft-pack battery monomers. The third component is a heat-conducting pad.

[0007] The battery device provided by the embodiment of the present application can pass the first connecting piece through the connecting hole arranged on the first component of the battery monomer module and lock the first locking part arranged in the second area of the bottom plate, so as to realize the overall assembly of the battery monomer module to the bottom plate. Meanwhile, the third component is arranged on the first area, so that the third component is located between the first area and the soft-pack battery monomer, and the third component adopts the heat-conducting pad. The heat-conducting pad can realize the heat conduction of the soft-pack battery monomer, and the heat-conducting pad has no flowability, so the influence of the heat-conducting pad on the first locking part arranged in the second area is low, thereby effectively improving the connection reliability of the first component of the battery monomer module and the bottom plate.

[0008] In some embodiments, the heat conduction performance of the third component is better than that of air.

[0009] By adopting the above technical solution, since the heat conduction performance of the third component is better than that of air, when the third component is arranged between the first area and the soft-pack battery monomer, the heat conduction efficiency of the soft-pack battery monomer can be effectively improved by using the third component, thereby improving the heat dissipation effect of the soft-pack battery monomer.

[0010] In some embodiments, the heat conduction performance of the third component is better than that of nitrogen.

[0011] By adopting the above technical solution, when the third component is arranged between the first area and the soft-pack battery monomer in the case that the first box is filled with nitrogen, the heat conduction efficiency of the soft-pack battery monomer can be effectively improved by using the third component, thereby improving the heat dissipation effect of the soft-pack battery monomer.

[0012] In some embodiments, the heat conduction coefficient of the third component is 0.2 w / (m·k)-2w / (m·k).

[0013] By adopting the above technical solution, in this case of heat conduction coefficient, the heat conduction effect of the third component on the soft-pack battery monomer is better.

[0014] In some embodiments, the third component has elasticity, and the elasticity of the third component is better than that of the bottom plate.

[0015] By adopting the above technical solution, by arranging the third component to have elasticity and better elasticity than the bottom plate, the damage caused by the rigid contact of the battery monomer module to the bottom plate can be effectively reduced.

[0016] In some embodiments, along the third direction, the soft-pack battery monomer is arranged on one side of the bottom plate, the third direction, the first direction and the second direction are perpendicular to each other; along the third direction, the opposite two side surfaces of the third component are respectively adhered to the soft-pack battery monomer and the bottom plate by the back adhesive.

[0017] By adopting the technical scheme, the third component can be fixed on the bottom plate through the back adhesive, and the soft package battery cell can be fixed through the back adhesive and the third component, so that the connection stability of the third component and the soft package battery cell is further improved.

[0018] In some embodiments, the back adhesive is located in the first region.

[0019] By adopting the technical scheme, the back adhesive is arranged in the range of the first region, so that the influence of the back adhesive on the first locking part in the second region can be effectively reduced.

[0020] In some embodiments, along the first direction, two first components of two adjacent groups of battery cell modules abut each other.

[0021] By adopting the technical scheme, the two first components of the two adjacent groups of battery cell modules can abut each other through the two first components, so that the multiple groups of battery cell modules can be limited and supported in the first direction.

[0022] In some embodiments, one of the two first components that abut each other includes a first body part and a protrusion protruding from the first body part in the first direction, and the other of the two first components that abut each other includes a second body part and a groove recessed in the second body part in the first direction; the first body part and the second body part abut and fit in the first direction, and the protrusion is embedded in the groove.

[0023] By adopting the technical scheme, the first body part of one of the two first components that abut each other and the second body part of the other of the two first components that abut each other can abut and fit in the second direction, and the protrusion of one of the two first components is embedded in the groove of the other of the two first components at the same time, so that the two first components can abut each other and be embedded and fitted at the same time, thereby further improving the stability of the abutment of the two adjacent groups of battery cell modules.

[0024] In some embodiments, along the third direction, the soft package battery cell is arranged on one side of the bottom plate, the third direction, the first direction and the second direction are perpendicular to each other; the protrusion and the second body part are both provided with connecting holes, and the connecting holes of the protrusion and the second body part are correspondingly arranged in the third direction; the same first connecting piece is arranged through the connecting holes of the protrusion and the second body part to lock the two on the bottom plate.

[0025] By adopting the technical scheme, the first connecting piece can be arranged through the connecting holes of the protrusion and the second body part, and the two first components that abut each other and are embedded and fitted can be locked on the bottom plate, so that the consistency of the adjacent battery cell modules connected to the bottom plate can be effectively improved.

[0026] In some embodiments, at least one side end of the first component of the at least partial battery cell module is connected with the surrounding frame in the second direction.

[0027] By adopting the technical solutions described above, the first component can also be connected with the surrounding frame of the first box body, so that the overall strength and stability of the battery cell module and the first box body can be further improved.

[0028] In some embodiments, the surrounding frame comprises two first edge beams oppositely arranged in the second direction, and the first edge beams are provided with first locking holes; the end of the first component is provided with a second locking part in the second direction; and the battery device further comprises a second connecting piece, which passes through the first locking hole from the outer surface of the first edge beam and is locked into the second locking part.

[0029] By adopting the technical solutions described above, the second connecting piece can pass through the first locking hole from the outer surface of the first edge beam and be locked into the second locking part, so as to achieve the purpose of locking and fixing the first component and the first edge beam.

[0030] In some embodiments, the second connecting piece comprises a head part and a connecting part, the connecting part is locked into the second locking part, and the battery device further comprises a sealing piece, which is clamped between the head part and part of the wall surface of the first edge beam.

[0031] By adopting the technical solutions described above, the sealing piece is clamped between the head part and part of the wall surface of the first edge beam, so that the sealing and protection effect of the first locking hole can be effectively improved.

[0032] In some embodiments, in the first direction, among two groups of battery cell modules adjacent to each other, two first components adjacent to each other are abutted; one of the two abutted first components comprises a first body part and a protrusion protruding from the first body part in the first direction, and the other of the two abutted first components comprises a second body part and a groove recessed in the second body part in the first direction; the first body part and the second body part are abutted and matched in the first direction, and the protrusion is embedded in the groove.

[0033] By adopting the technical solutions described above, on the basis of connecting the first component with the surrounding frame, the first body part and the second body part of the two adjacent first components are abutted, and the protrusion is embedded in the groove, so that the surrounding frame can form a limiting connection in the second direction of the first component, and the two adjacent first components can form a limiting abutment in the first direction, and the two adjacent first components can also form a limiting cooperation in the direction perpendicular to the first direction and the second direction by embedding the protrusion in the groove, so that the assembly stability of the battery cell module can be further improved.

[0034] In some embodiments, the protrusion and the second body portion are respectively provided with second locking portions, and the two second connectors respectively pass through different first locking holes on the first side beams and are respectively locked into the second locking portions on the protrusion and the second body portion.

[0035] By adopting the technical scheme, the protrusion of one of the two first components in abutment is provided with a second locking portion, the second body portion of the other first component in abutment is provided with a second locking portion, and the two second connectors respectively pass through different first locking holes on the first side beams, so that the two second connectors are respectively locked into the corresponding second locking portions of the protrusion and the second body portion of the two first components in abutment, thereby achieving the locking connection of the two first components in abutment and the surrounding frame.

[0036] In some embodiments, the first box body further comprises a first beam extending along the first direction, the first beam being located at the middle of the surrounding frame and connected to the bottom plate along the second direction; the surrounding frame comprises two first side beams oppositely arranged along the second direction; the battery device comprises two rows of battery monomer module columns arranged along the second direction, each row of battery monomer module columns comprising a plurality of battery monomer module groups arranged along the first direction, and the opposite ends of the first components of each battery monomer module group being respectively connected to the first side beams and the first beam along the second direction.

[0037] By adopting the technical scheme, the first beam is arranged at the middle of the surrounding frame, and the two rows of battery monomer module columns can be arranged on the opposite sides of the first beam along the second direction, and the opposite ends of the first components of each battery monomer module group along the second direction can be respectively connected to the first side beams and the first beam, so that the installation stability of each battery monomer module group when the two rows of battery monomer module columns are arranged can be effectively improved.

[0038] In some embodiments, the soft package battery monomer is arranged on one side of the bottom plate along a third direction, the third direction, the first direction and the second direction are perpendicular to each other, and on a projection plane perpendicular to the third direction, the orthogonal projection of the third component is completely dislocated from the orthogonal projection of the first side beam, the orthogonal projection of the first component, the orthogonal projection of the second component and the orthogonal projection of the first beam.

[0039] By adopting the technical scheme, the orthogonal projection of the third component along the third direction is completely dislocated from the orthogonal projection of the first side beam, the orthogonal projection of the first component, the orthogonal projection of the second component and the orthogonal projection of the first beam, that is, the third component is not arranged between the bottom plate and the first side beam, the first component, the second component and the first beam, so that the assembly influence of the third component on the first side beam, the first component, the second component and the first beam can be reduced.

[0040] In some embodiments, the soft package battery cell is arranged on one side of the bottom plate along a third direction, the third direction, the first direction and the second direction are perpendicular to each other in pairs; the second region includes a first sub-region and a second sub-region, the first sub-region is provided with a first locking part, and the second sub-region is below a second flow channel for accommodating a heat exchange medium, and the second flow channel is communicated with the first flow channel; in the projection plane perpendicular to the third direction, the second flow channel intersects the first part.

[0041] By adopting the above technical scheme, the first flow channels below the adjacent two first regions can be connected by the second flow channel below the second sub-region, or the input or output flow channel and the first flow channel below the adjacent first region can be connected by the second flow channel below the second sub-region.

[0042] In some embodiments, the battery device further includes a second box body, the second box body is arranged on the first box body, and the second box body is connected with at least part of the first part.

[0043] By adopting the above technical scheme, the second box body is connected with at least part of the first part, so that the connection points of the first part, the first box body and the second box body can be further improved, thereby improving the overall strength of the battery cell module, the first box body and the second box body.

[0044] In some embodiments, the second box body is connected with at least part of the first part by a bolt locking connection.

[0045] By adopting the above technical scheme, the second box body can be connected with at least part of the first part by a bolt locking connection, so that the convenience of the connection operation can be improved.

[0046] In some embodiments, the battery device further includes a fifth part, the fifth part is elastic and arranged between the second box body and the soft package battery cell.

[0047] By adopting the above technical scheme, by arranging the elastic fifth part between the second box body and the soft package battery cell, the damage of the second box body and the soft package battery cell caused by rigid collision can be effectively reduced.

[0048] In some embodiments, the thermal conductivity of the third part is better than that of the fifth part.

[0049] By adopting the above technical scheme, the thermal conductivity of the third part is better, so that more heat on the soft package battery cell can be transferred to the bottom plate through the third part, so as to reduce the probability of heat accumulation on the side of the second box body.

[0050] In some embodiments, the sixth component having elasticity is arranged between at least two adjacent soft-pack battery cells in the same battery cell module, and the third component has better heat conduction performance than the sixth component.

[0051] By using the above technical solution, the sixth component having elasticity is arranged between at least two adjacent soft-pack battery cells, and the sixth component is used to realize the buffering effect between the adjacent soft-pack battery cells. Meanwhile, the third component has better heat conduction performance than the sixth component, so that more heat on the soft-pack battery cell can be transferred to the bottom plate through the third component, thereby reducing the heat diffusion effect between the adjacent soft-pack battery cells.

[0052] In some embodiments, the soft-pack battery cell includes a bag-shaped shell, an electrode assembly, and an electrode lead-out portion; the electrode assembly is packaged in the bag-shaped shell, a part of the electrode lead-out portion is located in the bag-shaped shell to connect the electrode assembly, and another part of the electrode lead-out portion is exposed from the bag-shaped shell.

[0053] By using the above technical solution, the electrode assembly is packaged in the bag-shaped shell, and the electrode lead-out portion is used to form electrical conduction with the electrode assembly and form electrical connection with the external structure.

[0054] In a second aspect, the embodiments of the present application further provide a power consumption device, which includes the battery device as described above, and the battery device is used to provide electric energy.

[0055] The power consumption device provided by the embodiments of the present application includes the battery device as described above. On the basis that the connection reliability of the first component of the battery cell module to the bottom plate is more optimal, the reliability of the power consumption device is also more optimal. BRIEF DESCRIPTION OF DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or related technical descriptions will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0057] Figure 1 The structural schematic diagram of the vehicle provided by the embodiments of the present application is shown in the figure;

[0058] Figure 2 The exploded view of the battery device provided by the embodiments of the present application is shown in the figure;

[0059] Figure 3 The partial enlarged view of A in the figure is shown in the figure; Figure 2

[0060] ​Figure 4 A structural schematic diagram of a battery monomer module provided for an embodiment of the present application is shown in FIG. 1.

[0061] Figure 5 A distribution schematic diagram of a first area and a second area of a bottom plate provided for an embodiment of the present application is shown in FIG. 2.

[0062] Figure 6 A partial structural schematic diagram of two adjacent first components of two adjacent groups of battery monomer modules provided for an embodiment of the present application is shown in FIG. 3.

[0063] Figure 7 A cross-sectional view of two adjacent first components of two adjacent groups of battery monomer modules provided for an embodiment of the present application is shown in FIG. 4.

[0064] Figure 8 A structural schematic diagram of a fifth component provided between a second box and a soft-pack battery monomer provided for an embodiment of the present application is shown in FIG. 5.

[0065] Figure 9 A structural schematic diagram of a sixth component provided between two adjacent soft-pack battery monomers provided for an embodiment of the present application is shown in FIG. 6.

[0066] Figure 10 A structural schematic diagram of a soft-pack battery monomer provided for an embodiment of the present application is shown in FIG. 7.

[0067] In the drawings, various reference numerals are used throughout the figures to reference like structures.

[0068] 1000, vehicle;

[0069] 100, battery device; 200, controller; 300, motor;

[0070] 10, box; 101, containing space; 11, first box; 111, surrounding frame; 1111, first side beam; 1112, first locking hole; 112, bottom plate; 112a, first area; 112b, second area; 112b1, first sub-area; 112b2, second sub-area; 1121, first flow channel; 1122, first locking portion; 113, first beam; 12, second box;

[0071] 110, battery monomer module;

[0072] 20, soft-pack battery monomer; 21, bag-shaped casing; 22, electrode lead-out portion;

[0073] 30, first component; 301, connecting hole; 302, second locking portion; 311, first body portion; 312, protrusion; 321, second body portion;

[0074] 40, second component; 50, first connector; 60, third component; 61, adhesive; 70, second connector; 71, seal; 80, fifth component; 90, sixth component;

[0075] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0076] Embodiments of the present application are described below in detail with reference to examples illustrated in the accompanying drawings, in which like or similar elements or components having the same or similar functions and / or compositions are designated with the same reference numerals throughout the drawings. The embodiments described below through reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0077] In the description of the present application, it needs to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0078] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0079] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or 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 above terms in the present application can be understood according to the specific circumstances.

[0080] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system such as hydroelectric, thermal, wind and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as industrial equipment and aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0081] The battery device comprises a box body and a battery cell, the box body is used for accommodating the battery cell and forming protection for the battery cell. The box body comprises a bottom plate, heat exchange between the battery cell and the bottom plate is achieved by using the bottom plate as a heat exchange plate, so that the battery cell in the battery module can work within a preset temperature range. In the related art, in order to further improve the heat exchange efficiency between the battery cell and the heat exchange plate, a heat-conducting adhesive is coated on the heat exchange plate (that is, the bottom plate), and the heat-conducting adhesive is used to form a heat exchange connection between the battery cell and the bottom plate. However, since the heat-conducting adhesive has a fluid structure, the heat-conducting adhesive may overflow, so that the adhesive flows into the groove structure of the bottom plate, thereby affecting the connection and assembly of the bottom plate and other structural members (for example, a beam structure or a corresponding structural member used for limiting and connecting the battery cell).

[0082] Based on the above considerations, in order to solve the problem that the adhesive coated on the bottom plate of the box body affects the connection and assembly of the bottom plate due to its fluidity, a battery device is designed. The surface of the bottom plate of the first box body of the battery device is divided into a first region and a second region, the first region is used to carry a soft-pack battery cell, a first flow channel is arranged below the first region to achieve heat exchange, the first locking part arranged in the second region is locked with the first connecting piece of the first part of the battery cell module to achieve locking assembly, and a third part is arranged in the first region. The third part is made of a heat-conducting pad and arranged between the first region and the soft-pack battery cell. The heat-conducting pad forms heat conduction between the bottom plate and the soft-pack battery cell. Since the heat-conducting pad has no fluidity, the influence of the heat-conducting pad on the first locking part arranged in the second region is low, so that the connection reliability of the first part and the bottom plate is more optimal.

[0083] The battery device disclosed in the embodiments of the present application can be used in a power consumption device using a battery as a power source or a variety of energy storage systems using a battery as an energy storage element. The power consumption device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0084] The following embodiments take a power consumption device of an embodiment of the present application, i.e., a vehicle 1000, as an example for illustration.

[0085] Please refer to Figure 1 , Figure 1A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, head or tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power source of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 being used to control the battery device 100 to supply power to the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0086] In some embodiments of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0087] Please refer to Figure 2 , Figure 2 An exploded view of the battery device 100 is provided for some embodiments of the present application. The battery device 100 mentioned in the embodiments of the present application can include one or more battery cell modules 110 for providing voltage and capacity. The battery cell module 110 can include a plurality of soft package battery cells 20 connected in series, parallel or mixed connection through bus components.

[0088] In some embodiments, the battery cell module 110 is usually formed by arranging a plurality of soft package battery cells 20.

[0089] As an example, the battery cell module 110 is arranged and fixed by a plurality of soft package battery cells 20 to form an independent module, for example, a plurality of soft package battery cells 20 can be bundled by a cable tie, or the battery cell module 110 can be arranged with end plates at both ends of the plurality of soft package battery cells 20 and fixed by a cable tie.

[0090] In some embodiments, the battery device 100 can be a battery pack, which includes a box body 10 and one or more battery cell modules 110, and the battery cell module 110 is accommodated in the box body 10.

[0091] As an example, the battery cell module 110 can be accommodated in the box body 10 by being fixed in the box body 10.

[0092] As an example, the box 10 can include a first box 11 and a second box 12. The first box 11 and the second box 12 are buckled so that an enclosed space is formed inside the box 10 to accommodate the battery cell assembly. The enclosed here means covered or closed, which can be sealed or non-sealed. The second box 12 can be a top cover or a bottom plate.

[0093] As an example, the box 10 can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively so that an enclosed space is formed inside the box 10 to accommodate the battery cell assembly.

[0094] In some embodiments, the box 10 can be part of the chassis structure of the vehicle 1000. For example, part of the box 10 can be at least part of the floor of the vehicle 1000, or part of the box 10 can be at least part of the cross beam and the longitudinal beam of the vehicle 1000.

[0095] The technical solutions described in the embodiments of the present application are applicable to various electric devices using soft package battery cells 20, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes airplanes, rockets, space shuttles and spaceships, etc.

[0096] In the embodiments of the present application, the soft package battery cell 20 can be a secondary battery, which means that the soft package battery cell 20 can be activated by charging after discharging.

[0097] The soft package battery cell 20 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 thereto.

[0098] According to some embodiments of the present application, with reference to Figures 2 to 5The embodiment of the application provides a battery device 100, which comprises a first box body 11 and a plurality of battery monomer modules 110, the first box body 11 comprises a surrounding frame 111 and a bottom plate 112 which are connected to each other to form a containing space 101, and the plurality of battery monomer modules 110 are located in the containing space 101; the battery monomer module 110 comprises two first parts 30 which are oppositely arranged along a first direction X and two second parts 40 which are oppositely arranged along a second direction Y, the two first parts 30 and the two second parts 40 jointly enclose a limiting space, the battery monomer module 110 further comprises a plurality of soft package battery monomers 20 which are stacked along the first direction X and located in the limiting space, and the first direction X is perpendicular to the second direction Y; a surface of the bottom plate 112 towards the soft package battery monomers 20 comprises a first area 112a and a second area 112b, the first area 112a is used for bearing the soft package battery monomers 20 and is provided with a first flow channel 1121 below, and the first flow channel 1121 is used for containing a heat exchange medium; the second area 112b is provided with a first locking part 1122 which is concave downwards, the first part 30 is provided with a connecting hole 301, and the battery device 100 further comprises a first connecting piece 50, the first connecting piece 50 is locked to the bottom plate 112 by penetrating the connecting hole 301 and being locked into the first locking part 1122 to lock the first part 30 to the bottom plate 112; the battery device 100 further comprises a third part 60, the third part 60 is arranged on the first area 112a and located between the first area 112a and the soft package battery monomers 20, and the third part 60 is a heat-conducting pad.

[0099] The first box body 11 comprises the surrounding frame 111 and the bottom plate 112, so that the surrounding frame 111 can be arranged at the outer edge of the bottom plate 112 and enclose the containing space 101, and the battery monomer module 110 can be accommodated in the containing space 101.

[0100] The surface of the bottom plate 112 comprises the first area 112a and the second area 112b, and the first area 112a and the second area 112b refer to two areas divided by different positions on the surface of the bottom plate 112; the first area 112a is used for bearing the soft package battery monomers 20 of the battery monomer module 110, and the second area 112b is provided with the first locking part 1122 which is concave downwards and is used for forming a connecting assembly with the first part 30 of the battery monomer module 110.

[0101] Optionally, the first locking part 1122 comprises but is not limited to a threaded hole opened on the bottom plate 112, a nut embedded in the bottom plate 112 and other structures capable of forming a locking fixation.

[0102] Meanwhile, the first region 112a is further provided with a first flow channel 1121 below the first region 112a, and the first flow channel 1121 is used to accommodate a heat exchange medium; thus, when the first region 112a carries the soft-pack battery monomer 20, the heat exchange medium accommodated in the first flow channel 1121 can form heat exchange with the soft-pack battery monomer 20, so that the heat management effect of the soft-pack battery monomer 20 can be realized.

[0103] Optionally, the heat exchange medium can be, but is not limited to, a heat exchange water, a heat exchange oil, and the like, and a large specific heat capacity medium. The heat exchange medium is circulated into the first flow channel 1121 to realize heat exchange between the heat exchange medium and the soft-pack battery monomer 20. Alternatively, the heat exchange medium can also be a phase change material medium, which can absorb a large amount of heat through phase change, so that the heat generated by the soft-pack battery monomer 20 during operation can be absorbed to achieve the purpose of heat dissipation of the soft-pack battery monomer 20.

[0104] It should be understood that the first flow channel 1121 is arranged below the first region 112a, and the first locking portion 1122 is arranged in the second region 112b, so that the first locking portion 1122 and the first flow channel 1121 can be arranged in different regions, and the influence of the first locking portion 1122 on the first flow channel 1121 can be reduced.

[0105] Meanwhile, the first locking portion 1122 is arranged in a concave structure, and when the first component 30 of the battery monomer module 110 is arranged on the bottom plate 112, the first locking portion 1122 does not interfere with the first component 30 to affect the connection reliability of the first component 30.

[0106] The battery monomer module 110 includes the soft-pack battery monomer 20, the first component 30, and the second component 40. Two first components 30 are arranged opposite to each other along a first direction X, and two second components 40 are arranged opposite to each other along a second direction Y perpendicular to the first direction X. Thus, the two first components 30 and the two second components 40 can jointly enclose a limiting space, and a plurality of soft-pack battery monomers 20 are arranged in the limiting space along the first direction X. Thus, the two first components 30 can limit and abut the opposite ends of the plurality of soft-pack battery monomers 20 along the first direction X, and the two second components 40 can limit and abut the opposite ends of the plurality of soft-pack battery monomers 20 along the second direction Y.

[0107] Optionally, the first component 30 can be, but is not limited to, an end plate, an abutting beam, an abutting block, and the like, which are structural members for limiting and abutting support. The second component 40 can be, but is not limited to, a limiting sheet, a limiting plate, a limiting beam, a strap, and the like, which are structural members for limiting.

[0108] Exemplarily, in some embodiments, the first component 30 can be an end plate, the second component 40 can be a side plate, two end plates can be arranged in abutment at opposite ends of the plurality of stacked soft package battery cells 20 along the first direction X, and the side plate can be arranged in abutment at opposite ends of the plurality of stacked soft package battery cells 20 along the second direction Y.

[0109] Alternatively, in some other embodiments, the first component 30 can be an end plate, the second component 40 can be a strap, two end plates can be arranged in abutment at opposite ends of the plurality of stacked soft package battery cells 20 along the first direction X, and the strap can be arranged in abutment at opposite ends of the plurality of stacked soft package battery cells 20 along the second direction Y and attached to the two end plates along the first direction X.

[0110] The first direction X and the second direction Y described above refer to two perpendicular directions; alternatively, the first direction X can be the length direction of the first box body 11, or the width direction of the first box body 11, or any direction in the same plane as the length direction and the width direction of the first box body 11; similarly, the second direction Y can be the length direction of the first box body 11, or the width direction of the first box body 11, or any direction in the same plane as the length direction and the width direction of the first box body 11.

[0111] Exemplarily, in some embodiments, the first direction X can be the length direction of the first box body 11, and the second direction Y can correspond to the width direction of the first box body 11.

[0112] The first component 30 is provided with a connecting hole 301, and the battery device 100 further comprises a first connecting piece 50; in this way, the first connecting piece 50 can pass through the connecting hole 301 and be locked into the first locking portion 1122, so as to achieve the purpose of locking the first component 30 to the bottom plate 112.

[0113] It should be understood that the connecting hole 301 refers to a through hole structure provided through the first component 30.

[0114] Alternatively, the first connecting piece 50 can be a fastener such as a bolt, a screw, etc. Exemplarily, taking the first connecting piece 50 as a bolt as an example, the threaded shank portion of the bolt can pass through the connecting hole 301 and be locked into the first locking portion 1122, and the locking head portion of the bolt abuts against one end of the first component 30 away from the bottom plate 112; in this way, the first component 30 can be locked and fixed to the bottom plate 112 by using the bolt.

[0115] The battery device 100 further comprises a third component 60; the third component 60 is a heat-conducting pad, which refers to a component with good heat-conducting performance.

[0116] The third component 60 is arranged in the first region 112a and between the first region 112a and the pouch battery cell 20. Optionally, the battery cell module 110 can be used to sandwich and fix the third component 60 between the pouch battery cell 20 and the first region 112a, that is, the first component 30 at both ends limits and fixes the plurality of stacked pouch battery cells 20, when the first component 30 is locked to the first locking portion 1122 of the second region 112b through the first connecting piece 50, the pouch battery cell 20 is correspondingly abutted against the first region 112a and abutted against the third component 60.

[0117] In this way, the heat-conducting pad is used to transfer heat between the pouch battery cell 20 and the first region 112a of the bottom plate 112, so that the heat exchange efficiency of the pouch battery cell 20 and the heat exchange medium in the first flow channel 1121 arranged below the first region 112a can be effectively improved.

[0118] The battery device 100 provided by the embodiment of the present application can pass the connecting hole 301 arranged on the first component 30 of the battery cell module 110 through the first connecting piece 50 and lock into the first locking portion 1122 arranged in the second region 112b of the bottom plate 112, so as to realize the assembly of the battery cell module 110 to the bottom plate 112 as a whole. Meanwhile, the third component 60 is arranged on the first region 112a, so that the third component 60 is located between the first region 112a and the pouch battery cell 20, and the third component 60 is made of a heat-conducting pad. The heat-conducting pad can not only realize the heat conduction effect on the pouch battery cell 20, but also has low influence on the first locking portion 1122 arranged in the second region 112b due to the non-flowing property of the heat-conducting pad, so that the connection reliability of the first component 30 of the battery cell module 110 and the bottom plate 112 can be effectively improved.

[0119] Please refer to Figures 2 to 5 In some embodiments, the heat conduction performance of the third component 60 is better than that of air.

[0120] It should be understood that, in the embodiment, the heat conduction performance of the third component 60 and the heat conduction performance of air are both detected under the same conditions. For example, the heat conduction performance of the third component 60 and the heat conduction performance of air are both detected at room temperature and standard atmospheric pressure.

[0121] In the embodiment, the heat conduction performance of the third component 60 is set to be better than that of air. Compared with the battery device 100 without a heat-conducting structure in the related art, the heat conduction effect formed between the pouch battery cell 20 and the bottom plate 112 by using the third component 60 is better than the heat conduction effect of air existing between the pouch battery cell 20 and the bottom plate 112 in the related art. Therefore, the heat dissipation or heating effect on the pouch battery cell 20 can be effectively improved.

[0122] Please refer to Figures 2 to 5 In some embodiments, the third component 60 has a thermal conductivity better than that of nitrogen.

[0123] It should be understood that in some scenarios, the inside of the containing space 101 of the first box body 11 is filled with nitrogen for air tightness detection; therefore, in some scenarios, the inside space of the first box body 11 is replaced by nitrogen instead of air.

[0124] In this embodiment, the thermal conductivity of the third component 60 is set to be better than that of nitrogen, so that compared with the battery device 100 without the heat conduction structure in the related art, the heat conduction effect of the third component 60 formed between the soft-pack battery monomer 20 and the bottom plate 112 is better than the heat conduction effect of the nitrogen existing in the gap between the soft-pack battery monomer 20 and the bottom plate 112 in the related art, so that the heat dissipation or heating effect of the soft-pack battery monomer 20 can be effectively improved.

[0125] Please refer to Figures 2 to 5 In some embodiments, the thermal conductivity of the third component 60 is 0.2 w / (m·k)-2 w / (m·k).

[0126] The thermal conductivity of the third component 60 ranges from 0.2 w / (m·k)-2 w / (m·k), which represents the range of heat that can be transferred by the third component 60 per unit thickness under a unit temperature difference.

[0127] It should be understood that the thermal conductivity of the third component 60 indicates its heat conduction capacity, and the greater the value of the thermal conductivity of the third component 60, the better the heat conduction performance of the third component 60.

[0128] In this way, under this thermal conductivity, the third component 60 has a better heat conduction effect on the soft-pack battery monomer 20.

[0129] Please refer to Figures 2 to 5 In some embodiments, the third component 60 has elasticity, and the elasticity of the third component 60 is better than that of the bottom plate 112.

[0130] In this embodiment, the third component 60 has elasticity, that is, the third component 60 adopts a heat-conducting pad with elasticity.

[0131] Optionally, in some embodiments, the material of the third component 60 can be, but is not limited to, a heat-conducting silica gel pad, a heat-conducting rubber pad, a heat-conducting silicone pad, and the like.

[0132] The third component 60 is more elastic than the bottom plate 112; for example, in some embodiments, the bottom plate 112 can be made of a metal plate or a composite plate made of various materials such as a steel plate, an aluminum plate, a steel-aluminum composite plate, a copper-aluminum composite plate, etc., while the third component 60 can be made of a heat-conducting silicone pad, a heat-conducting rubber pad, a heat-conducting silicone grease pad, etc.

[0133] In this way, since the bottom plate 112 needs to bear the soft-pack battery monomer 20, the bottom plate 112 requires high strength and rigidity. By using the elastic heat-conducting pad between the bottom plate 112 and the soft-pack battery monomer 20, and filling the gap between the bottom plate 112 and the soft-pack battery monomer 20 with the heat-conducting pad, the rigid contact of the bottom plate 112 to the soft-pack battery monomer 20 can be reduced, and the heat-conducting pad can be in more sufficient contact with the soft-pack battery monomer 20 through elastic deformation, thereby further improving the heat-conducting effect of the heat-conducting pad on the soft-pack battery monomer 20.

[0134] For reference Figures 2 to 5 In some embodiments, the third component 60 is elastic, and the elastic modulus of the third component 60 is greater than or equal to 0.2 MPa.

[0135] In this embodiment, the elastic modulus of the third component 60 can be greater than or equal to 0.2 MPa; optionally, the elastic modulus of the third component 60 can be 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.35 MPa, 0.4 MPa, 0.5 MPa, 0.5 MPa, 0.55 MPa, 0.6 MPa, 0.65 MPa, 0.7 MPa, 0.75 MPa, 0.8 MPa, 0.85 MPa, 0.9 MPa, 0.95 MPa, 1 MPa, etc.

[0136] In this way, the elastic modulus of the third component 60 is greater than or equal to 0.2 MPa, and within this range of elastic modulus, the elastic cushioning effect of the third component 60 on the soft-pack battery monomer 20 can be further improved.

[0137] For reference Figure 2 , Figure 5 and Figure 7 In some embodiments, along the third direction Z, the soft-pack battery monomer 20 is arranged on one side of the bottom plate 112, and the third direction Z, the first direction X and the second direction Y are perpendicular to each other; along the third direction Z, the opposite side surfaces of the third component 60 are respectively bonded to the soft-pack battery monomer 20 and the bottom plate 112 by the adhesive 61.

[0138] The soft-pack battery monomer 20 can be arranged on one side of the bottom plate 112 along the third direction Z, for example, on the side of the bottom plate 112 facing the soft-pack battery monomer 20.

[0139] wherein the third direction Z refers to a direction perpendicular to both the first direction X and the second direction Y. Exemplarily, in some embodiments, the third direction Z can refer to a thickness direction of the bottom plate 112.

[0140] In the present embodiment, the side of the third component 60 facing the bottom plate 112 along the third direction Z can be adhesively fixed to the bottom plate 112 by the back adhesive 61. Alternatively, the back adhesive 61 can be disposed on the surface of the thermal pad, or the back adhesive 61 can also be disposed on the surface of the first region 112a of the bottom plate 112.

[0141] Meanwhile, the side of the third component 60 facing away from the bottom plate 112 along the third direction Z can be adhesively fixed to the soft-pack battery cell 20 by the back adhesive 61. Alternatively, the back adhesive 61 can be disposed on the surface of the thermal pad, or the back adhesive 61 can also be disposed on the surface of the soft-pack battery cell 20.

[0142] In this way, the third component 60 can be adhesively fixed to the bottom plate 112 by the back adhesive 61, and the soft-pack battery cell 20 can be adhesively fixed to the third component 60 by the back adhesive 61, so that the soft-pack battery cell 20 can be adhesively fixed to the third component 60 and the bottom plate 112, thereby effectively improving the connection stability of the third component 60 and the soft-pack battery cell 20.

[0143] Please refer to Figure 2 , Figure 5 and Figure 7 In some embodiments, the back adhesive 61 is located in the first region 112a.

[0144] In the present embodiment, the back adhesive 61 can be disposed within the range of the first region 112a, and the third component 60 and the bottom plate 112 can be adhesively fixed by the back adhesive 61.

[0145] Alternatively, the back adhesive 61 can be pre-disposed on the surface of the third component 60, and when the third component 60 is adhesively fixed to the first region 112a of the bottom plate 112 by the back adhesive 61, the back adhesive 61 is adhesively fixed to the first region 112a. Moreover, since the back adhesive 61 is pre-disposed on the surface of the component and is in the form of a paste-like gel, the flowability of the back adhesive 61 is relatively low, and thus the probability of the back adhesive 61 spreading into the second region 112b is also relatively low.

[0146] In this way, by disposing the back adhesive 61 within the range of the first region 112a, the probability of the back adhesive 61 flowing into the second region 112b and affecting the first locking portion 1122 is relatively low, thereby effectively reducing the influence of the back adhesive 61 on the first locking portion 1122 in the second region 112b.

[0147] Please refer to Figure 2 ,Figure 3 、 Figure 6 and Figure 7 In some embodiments, along the first direction X, the two first components 30 of the two adjacent battery cell modules 110 abut each other.

[0148] It should be understood that when the plurality of battery cell modules 110 are arranged in sequence along the first direction X, the first component 30 of one of the two adjacent battery cell modules 110 is arranged adjacent to and abuts the first component 30 of the other battery cell module 110. In this way, the battery cell module 110 can be connected to the first locking portion 1122 of the second area 112b of the bottom plate 112 by the first component 30, and the adjacent battery cell modules 110 can be limited and abutted by the first component 30. In this way, the stability of the plurality of battery cell modules 110 arranged in the first box body 11 can be further improved.

[0149] Meanwhile, after any one of the battery cell modules 110 is assembled on the bottom plate 112, the other battery cell modules 110 can be sequentially positioned and assembled along the first direction X by using the battery cell module 110 as a positioning reference. In this way, the convenience of assembling the battery cell modules 110 can be improved.

[0150] Please refer to Figure 2 、 Figure 3 、 Figure 6 and Figure 7 In some embodiments, one of the two abutting first components 30 includes a first body portion 311 and a protrusion 312 protruding from the first body portion 311 along the first direction X, and the other of the two abutting first components 30 includes a second body portion 321 and a groove 322 recessed from the second body portion 321 along the first direction X. The first body portion 311 and the second body portion 321 abut and fit along the first direction X, and the protrusion 312 is embedded in the groove 322.

[0151] It should be understood that the two abutting first components 30 of the two adjacent battery cell modules 110 include one first component 30 including a first body portion 311 and a protrusion 312 protruding from the first body portion 311 along the first direction X, and the other first component 30 including a second body portion 321 and a groove 322 recessed from the second body portion 321 along the first direction X.

[0152] In this way, the first body portion 311 of one of the two abutting first components 30 of the two adjacent battery cell modules 110 abuts the second body portion 321 of the other first component 30 along the first direction X, and the protrusion 312 of one of the two abutting first components 30 is embedded in the groove 322 of the other first component 30.

[0153] Optionally, the protrusion 312 can be located at any position of the first body portion 311 along the third direction Z; for example, the protrusion 312 can be located at the middle of the first body portion 311 along the third direction Z, or the protrusion 312 can be located at the side end of the first body portion 311 along the third direction Z and away from the base plate 112, or the protrusion 312 can be located at the side end of the first body portion 311 along the third direction Z and close to the base plate 112. Correspondingly, the second body portion 321 is recessed to form the recess 322 corresponding to the position of the protrusion 312.

[0154] Optionally, in some embodiments, at least part of the battery monomer module 110 has two first components 30 along the first direction X, one of which includes the first body portion 311 and the protrusion 312 protruding from the first body portion 311 along the first direction X, and the other includes the second body portion 321 and the recess 322 recessed in the second body portion 321 along the first direction X. For example, each of the two first components 30 of each battery monomer module 110 is arranged in this embodiment, and when a plurality of battery monomer modules 110 are arranged along the first direction X, any two adjacent groups of battery monomer modules 110 are arranged in the manner that the two first components 30 adjacent to each other are the first body portion 311 and the second body portion 321 abutting each other and the protrusion 312 embedded in the recess 322.

[0155] Alternatively, in some other embodiments, at least part of the battery monomer module 110 has two first components 30 along the first direction X, one of which includes the first body portion 311 and the protrusion 312 protruding from the first body portion 311 along the first direction X, or includes the second body portion 321 and the recess 322 recessed in the second body portion 321 along the first direction X, and the other first component 30 has no protrusion 312 or recess 322 structure design. For example, a group of battery monomer modules 110 adjacent to the surrounding frame 111 along the first direction X, wherein the first component 30 without the protrusion 312 or the recess 322 structure design abuts the surrounding frame 111, and the other first component 30 abuts with the first component 30 of another group of adjacent battery monomer modules 110.

[0156] In this way, the first body part 311 of one of the two first parts 30 abutting each other can abut with the second body part 321 of the other first part 30 along the second direction Y, while the protrusion 312 of one of the two first parts 30 is simultaneously embedded in the groove 322 of the other first part 30, so that the two adjacent first parts 30 can abut and be embedded at the same time, thereby further improving the stability of the abutment of the two adjacent groups of battery monomer modules 110. Moreover, through the abutment of the two first parts 30 of the two adjacent groups of battery monomer modules 110, the use of the beam body between the two adjacent groups of battery monomer modules 110 can be reduced, so that the space for accommodating the battery monomer modules 110 can be further improved, thereby improving the energy density of the battery device 100.

[0157] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, along the third direction Z, the soft-pack battery monomer 20 is arranged on one side of the bottom plate 112, and the third direction Z, the first direction X and the second direction Y are perpendicular to each other; the protrusion 312 and the second body part 321 are both provided with a connecting hole 301, and the connecting holes 301 of the two are correspondingly arranged along the third direction Z; the same first connecting piece 50 is arranged through the connecting holes 301 of the protrusion 312 and the second body part 321 to lock the two on the bottom plate 112.

[0158] In this embodiment, the two first parts 30 of the two adjacent groups of battery monomer modules 110 abutting each other, the protrusion 312 of one of the two first parts 30 and the second body part 321 of the other part are both provided with a connecting hole 301, and the connecting holes 301 of the two are correspondingly arranged along the third direction Z; in this way, the same first connecting piece 50 is arranged through the connecting holes 301 of the protrusion 312 and the second body part 321, and the first connecting piece 50 is locked on the first locking part 1122, so that the two first parts 30 abutting each other can be simultaneously locked on the bottom plate 112.

[0159] Optionally, the number of connecting holes 301 arranged on the protrusion 312 can be one or more than one, and correspondingly, the number of connecting holes 301 arranged on the second body part 321 is the same as the number of connecting holes 301 arranged on the protrusion 312. In this way, in the case of multiple connecting holes 301, the multiple connecting holes 301 of the protrusion 312 and the multiple connecting holes 301 of the second body part 321 are in one-to-one correspondence.

[0160] In this way, the first connecting member 50 can be used to pass through the connecting hole 301 connected to the protrusion 312 and the second body part 321, and lock the two first parts 30 abutting and fittingly embedded on the bottom plate 112, thereby effectively improving the consistency of the adjacent battery monomer module 110 connected to the bottom plate 112.

[0161] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, at least one side end of the first part 30 of the battery monomer module 110 is connected to the frame 111 along the second direction Y.

[0162] Optionally, the first part 30 and the frame 111 can be connected by locking, welding, bonding, clamping, or the like.

[0163] In some embodiments, when a group of battery monomer modules 110 is arranged in the frame 111 along the second direction Y, the first parts 30 of the battery monomer modules 110 of the group are connected to the frame 111 on opposite sides along the second direction Y; or in other embodiments, when two groups of battery monomer modules 110 are arranged in the frame 111 along the second direction Y, the first parts 30 of the battery monomer modules 110 of each group are connected to the frame 111 on one side adjacent to the frame 111 along the second direction Y; or in other embodiments, when three or more groups of battery monomer modules 110 are arranged in the frame 111 along the second direction Y, the first parts 30 of the battery monomer modules 110 adjacent to the frame 111 along the second direction Y are connected to the frame 111 on one side adjacent to the frame 111 along the second direction Y.

[0164] In this way, the first parts 30 of at least some of the battery monomer modules 110 can also be connected to the frame 111 of the first box 11, thereby further improving the overall strength and stability of the battery monomer modules 110 and the first box 11.

[0165] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, the frame 111 includes two first side beams 1111 oppositely arranged along the second direction Y, and the first side beams 1111 are provided with first locking holes 1112; the end of the first part 30 is provided with a second locking part 302 along the second direction Y; the battery device 100 further includes a second connecting member 70, which passes through the first locking hole 1112 from the outer surface of the first side beam 1111 and is locked into the second locking part 302.

[0166] Optionally, the first side beam 1111 can be, but is not limited to, an extruded aluminum beam, a profiled beam, or the like. The first side beam 1111 can be fixedly connected to the bottom plate 112 by fastener locking, welding, or the like.

[0167] The first side beam 1111 is provided with a first locking hole 1112. The first locking hole 1112 refers to a through-hole structure penetrating the first side beam 1111 in the second direction Y.

[0168] The first component 30 is provided with a second locking portion 302 at an end in the second direction Y. Optionally, the second locking portion 302 can be, but is not limited to, a threaded hole formed on the first component 30, a nut embedded in the first component 30, or the like. Optionally, the same end of the first component 30 in the second direction Y can be provided with one or more second locking portions 302.

[0169] The battery device 100 further comprises a second connecting member 70, which can be, but is not limited to, a bolt, a screw, or the like. By way of example, the second connecting member 70 is taken as a bolt. The threaded shank of the bolt can pass through the first locking hole 1112 and be locked in the second locking portion 302, and the locking head of the bolt abuts against the side surface of the first side beam 1111 away from the first component 30. In this way, the first side beam 1111 and the first component 30 can be fixedly connected by the bolt.

[0170] In some embodiments, the number of first locking holes 1112 can be multiple. The multiple first locking holes 1112 can be sequentially and spacedly arranged on the first side beam 1111 in the first direction X, and each first locking hole 1112 is arranged one-to-one corresponding to the second locking portion 302 arranged on the first component 30 of each group of battery monomer assemblies. In this way, the multiple second first locking portions 1122 pass through the corresponding first locking holes 1112 and are locked into the corresponding second locking portions 302, so as to realize the connection of the first side beam 1111 and the first component 30 of each group of battery monomer assemblies.

[0171] In this way, the second connecting member 70 can pass through the first locking hole 1112 from the outer surface of the first side beam 1111 and be locked into the second locking portion 302, so as to realize the purpose of locking and fixing the first component 30 and the first side beam 1111.

[0172] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, the second connecting member 70 comprises a head and a connecting portion, the connecting portion is locked into the second locking portion, and the battery device 100 further comprises a sealing member 71, the sealing member 71 is clamped between the head and part of the wall surface of the first side beam 1111.

[0173] It can be understood that the connecting portion of the second connecting member 70 refers to the portion for locking to the second locking portion 302, and the head portion of the second connecting member 70 refers to another portion for abutting against the surface of the first edge beam 1111.

[0174] Exemplarily, in some embodiments, the second connecting member 70 can be a bolt, so that the connecting portion of the second connecting member 70 is the shank portion of the bolt, and the head portion of the second connecting member 70 is the locking head portion of the bolt.

[0175] The battery device 100 further comprises a sealing member 71, which can be understood as including but not limited to a sealing ring, a sealing gasket, a sealing washer, a sealing adhesive layer, and the like structure capable of forming a sealing interface.

[0176] In the embodiment, the connecting portion of the second connecting member 70 is locked into the second locking portion 302, so that the head portion of the second connecting member 70 abuts against the wall surface of the first edge beam 1111, and the sealing member 71 is clamped between the head portion and the partial wall surface of the first edge beam 1111. In this way, the sealing member 71 can form a sealing interface around the first locking hole 1112 on the wall surface of the head portion and the first edge beam 1111.

[0177] In this way, the sealing member 71 is clamped between the head portion and the partial wall surface of the first edge beam 1111, so that the sealing and protection effect of the first locking hole 1112 can be effectively improved, and the sealing performance of the inside of the first box body 11 can be improved.

[0178] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, along the first direction X, two first components 30 abutting each other are included in two adjacent groups of battery cell modules 110; one of the two first components 30 abutting each other includes a first body portion 311 and a protrusion 312 protruding from the first body portion 311 along the first direction X, and the other of the two first components 30 abutting each other includes a second body portion 321 and a groove 322 recessed from the second body portion 321 along the first direction X; the first body portion 311 and the second body portion 321 are in abutting fit along the first direction X, and the protrusion 312 is embedded in the groove 322.

[0179] In the embodiment, on the basis of the above-mentioned connection of the end portion of the first component 30 along the second direction Y to the surrounding frame 111, the first body portion 311 of one of the two first components 30 abutting each other of the two adjacent groups of battery cell modules 110 is in abutting fit with the second body portion 321 of the other first component 30 along the first direction X, and the protrusion 312 of the one first component 30 is embedded in the groove 322 of the other first component 30.

[0180] Thus, the frame 111 can form a limiting connection with the second direction Y of the first component 30, the adjacent two first components 30 can form a limiting abutment in the first direction X, and the adjacent two first components 30 can also form a limiting fit in the third direction Z by the way of the protrusion 312 embedded in the groove 322, so as to further improve the assembly stability of the battery monomer module 110.

[0181] Please refer to Figure 2 、 Figure 3 、 Figure 6 and Figure 7 In some embodiments, the protrusion 312 and the second body part 321 are respectively provided with a second locking part 302, and the two second connecting pieces 70 respectively pass through different first locking holes 1112 on the first side beam 1111 and are respectively locked into the second locking part 302 on the protrusion 312 and the second body part 321.

[0182] In the embodiment, in the adjacent two groups of battery monomer modules 110, the two first components 30 that are adjacent and abutted, the protrusion 312 of one of the first components 30 is provided with a second locking part 302 at the end in the second direction Y, and the second body part 321 of the other first component 30 is provided with a second locking part 302 at the end in the second direction Y.

[0183] In some embodiments, in the two first components 30 that are adjacent and abutted, the second locking part 302 provided on the protrusion 312 and the second locking part 302 provided on the second body part 321 can be spaced apart in the third direction Z.

[0184] Thus, in the two first components 30 that are adjacent and abutted, the protrusion 312 of one of the first components 30 is provided with a second locking part 302, and the second body part 321 of the other first component 30 is provided with a second locking part 302, and the two second connecting pieces 70 respectively pass through different first locking holes 1112 on the first side beam 1111, so that the two second connecting pieces 70 are respectively locked into the corresponding second locking part 302 of the protrusion 312 and the second body part 321 of the two first components 30 that are adjacent and abutted, so as to realize the locking connection of the two first components 30 that are adjacent and abutted with the frame 111.

[0185] Please refer to Figure 2In some embodiments, the first box body 11 further comprises a first beam 113 extending along the first direction X, the first beam 113 being located at the middle of the frame 111 along the second direction Y and connected to the bottom plate 112; the frame 111 comprises two first side beams 1111 oppositely arranged along the second direction Y; the battery device 100 comprises two rows of battery monomer module columns arranged along the second direction Y, each row of battery monomer module columns comprising a plurality of battery monomer module groups 110 arranged along the first direction X, and the opposite ends of the first component 30 of each battery monomer module group 110 being connected to the first side beam 1111 and the first beam 113 along the second direction Y, respectively.

[0186] It can be understood that the first beam 113 refers to a beam structure for reinforcing the first box body 11. Optionally, the first beam 113 can be, but is not limited to, a profiled beam, an extruded aluminum beam, etc.

[0187] The first beam 113 is located at the middle of the frame 111 along the second direction Y and connected to the bottom plate 112, and the first beam 113 extends along the first direction X. In this way, the opposite sides of the first beam 113 along the second direction Y can be used to accommodate the battery monomer module groups 110, respectively.

[0188] The battery monomer module column refers to a column formed by a plurality of battery monomer module groups 110 arranged along the first direction X.

[0189] The number of the battery monomer module columns is two, and the two rows of battery monomer module columns are arranged on the opposite sides of the first beam 113 along the second direction Y, respectively. In this way, the opposite ends of each battery monomer module group 110 in each row of battery monomer module columns are arranged adjacent to the first beam 113 and the first side beam 1111, respectively.

[0190] In the present embodiment, the opposite ends of the first component 30 of each battery monomer module group 110 are connected to the first side beam 1111 and the first beam 113 along the second direction Y, respectively. In this way, the connection points of each battery monomer module group 110 and the first box body 11 through the first component 30 can be effectively improved, and the structural strength of the battery device 100 as a whole can be improved.

[0191] Optionally, the connection mode of the first component 30 and the first beam 113 can be, but is not limited to, fastener locking connection, welding, bonding, etc.

[0192] Please refer to Figure 3In some embodiments, the soft-pack battery cell 20 is arranged on one side of the bottom plate 112 along a third direction Z, the third direction Z, the first direction X and the second direction Y are perpendicular to each other; on a projection plane perpendicular to the third direction Z, the orthographic projection of the third component 60 is completely misaligned with the orthographic projection of the first edge beam 1111, the orthographic projection of the first component 30, the orthographic projection of the second component 40 and the orthographic projection of the first beam 113.

[0193] In the embodiment, the orthographic projection of the third component 60 along the third direction Z is arranged to be completely misaligned with the orthographic projection of the first edge beam 1111, the orthographic projection of the first component 30, the orthographic projection of the second component 40 and the orthographic projection of the first beam 113; that is, the third component 60 is arranged on the first region 112a, and the third component 60 is located within the range enclosed by the first component 30, the second component 40, the first beam 113 and the first edge beam 1111.

[0194] In this way, the third component 60 is not arranged between the bottom plate 112 and the first edge beam 1111, the first component 30, the second component 40 and the first beam 113, so that the assembly influence of the third component 60 on the first edge beam 1111, the first component 30, the second component 40 and the first beam 113 can be reduced.

[0195] Please refer to Figure 6 In some embodiments, the soft-pack battery cell 20 is arranged on one side of the bottom plate 112 along a third direction Z, the third direction Z, the first direction X and the second direction Y are perpendicular to each other; the second region 112b includes a first sub-region 112b1 and a second sub-region, the first sub-region 112b1 is provided with a first locking portion 1122, and the second sub-region is provided below a second flow channel for accommodating a heat exchange medium, and the second flow channel is communicated with the first flow channel 1121; on a projection plane perpendicular to the third direction Z, the orthographic projection of the second flow channel intersects with the orthographic projection of the first component 30.

[0196] The second region 112b includes a first sub-region 112b1 and a second sub-region 112b2; wherein the first sub-region 112b1 is used to arrange the first locking portion 1122, and the second sub-region 112b2 is provided below the second flow channel (not shown in the figure).

[0197] Therefore, by further dividing the second region 112b into the first sub-region 112b1 and the second sub-region 112b2, the first locking portion 1122 and the second flow channel are partitioned and arranged, so that the influence of the first locking portion 1122 on the second flow channel can be effectively reduced.

[0198] In the projection plane perpendicular to the third direction Z, the orthographic projection of the second flow channel intersects the orthographic projection of the first component 30; in this way, the second flow channel can be in communication with the first flow channel 1121 arranged below at least one adjacent first region 112a.

[0199] For example, in some embodiments, the first flow channel 1121 can be used to communicate the first flow channels 1121 below two adjacent first regions 112a, so as to achieve the circular communication of multiple first flow channels 1121.

[0200] Alternatively, in other embodiments, the first flow channel 1121 can also be used to communicate the first flow channels 1121 below one adjacent first region 112a and the input flow channel or the output flow channel for inputting or outputting the heat exchange medium.

[0201] Please refer to Figure 7 In some embodiments, the battery device 100 further comprises a second box body 12, the second box body 12 is arranged on the first box body 11, and the second box body 12 is connected with at least part of the first component 30.

[0202] The second box body 12 refers to a structure for covering the first box body 11 to cover and protect the battery monomer module 110 in the containing space 101. Optionally, in some embodiments, the second box body 12 can adopt a cover plate.

[0203] In this embodiment, the second box body 12 can be connected with at least part of the first component 30; optionally, the second box body 12 and the first component 30 can be connected and fixed by locking, welding, bonding and the like.

[0204] Optionally, the second box body 12 and each connected first component 30 can form one or more than one arbitrary multiple connection points.

[0205] In this way, the second box body 12 is connected with at least part of the first component 30, and the second box body 12 is connected with the first box body 11, so that the connection points of the first component 30, the first box body 11 and the second box body 12 can be further improved, thereby improving the overall strength of the battery monomer module 110, the first box body 11 and the second box body 12.

[0206] Please refer to Figure 2 In some embodiments, the second box body 12 is connected with at least part of the first component 30 by screw locking.

[0207] In this embodiment, the second box body 12 and at least part of the first component 30 can be connected by screw locking.

[0208] Exemplarily, in some embodiments, threaded holes or embedded mounting nuts can be correspondingly arranged on the first component 30, and bolts are used to pass through the second box body 12 from the side of the second box body 12 away from the first component 30 and are locked to the first component 30 to form a locking connection.

[0209] In this way, the second box body 12 can be connected with at least part of the first component 30 by means of bolt locking connection, so that the convenience of connection operation can be improved.

[0210] Please refer to Figure 3 In some embodiments, the battery device 100 further comprises a fifth component 80, which is elastic and arranged between the second box body 12 and the soft-pack battery cell 20.

[0211] The fifth component 80 refers to a structure for being arranged between the second box body 12 and the soft-pack battery cell 20 to form a partition and having elasticity. Optionally, the fifth component 80 can be but is not limited to a partition plate, a partition sheet, etc.

[0212] In this way, by arranging the elastic fifth component 80 between the second box body 12 and the soft-pack battery cell 20, the problem that the second box body 12 and the soft-pack battery cell 20 are damaged due to rigid impact can be effectively reduced.

[0213] Please refer to Figure 6 In some embodiments, the thermal conductivity of the third component 60 is better than that of the fifth component 80.

[0214] Optionally, in some embodiments, the material of the fifth component 80 can be but is not limited to a flame-retardant foam material structure such as polyethylene foam or polypropylene foam.

[0215] In this embodiment, the thermal conductivity of the fifth component 80 can be set to be lower than that of the third component 60, so that more heat on the soft-pack battery cell 20 can be transferred to the bottom plate 112 through the third component 60 and dissipated through the heat exchange medium in the first flow channel 1121, thereby reducing the probability of heat accumulation on the side of the second box body 12.

[0216] Please refer to Figure 7 In some embodiments, in the same battery cell module 110, at least two adjacent soft-pack battery cells 20 are provided with a sixth component 90, which is elastic, and the thermal conductivity of the third component 60 is better than that of the sixth component 90.

[0217] The sixth component 90 refers to a structure having elasticity and arranged between two adjacent soft package battery cells 20 to form a partition. Optionally, the sixth component 90 can be, but is not limited to, a partition plate, a partition sheet, or the like.

[0218] Optionally, in some embodiments, the sixth component 90 can be made of, but is not limited to, a flame-retardant foam material structure such as polyethylene foam or polypropylene foam.

[0219] In this way, the sixth component 90 having elasticity can be arranged between at least two adjacent soft package battery cells 20, and the sixth component 90 is used to achieve the buffering effect between the adjacent soft package battery cells 20. Meanwhile, the third component 60 has better heat conduction performance than the sixth component 90, so that more heat on the soft package battery cell 20 can be transferred to the bottom plate 112 through the third component 60, thereby reducing the heat diffusion effect between the adjacent soft package battery cells 20.

[0220] Please refer to Figure 2 and Figure 3 In some embodiments, the soft package battery cell 20 includes a pouch-shaped case 21, an electrode assembly (not shown in the figure), and an electrode lead-out portion 22. The electrode assembly is packaged in the pouch-shaped case 21, and a portion of the electrode lead-out portion 22 is located inside the pouch-shaped case 21 to connect the electrode assembly, and another portion of the electrode lead-out portion 22 is exposed from the pouch-shaped case 21.

[0221] The pouch-shaped case 21 refers to the external packaging structure of the soft package battery cell 20. Optionally, the pouch-shaped case 21 can be made of a multi-layer composite material such as an aluminum plastic film.

[0222] The pouch-shaped case 21 can include a packaging portion arranged at opposite ends of the pouch-shaped case 21. An opening, an aperture, a slot, or a channel can be reserved in the packaging portion, so that at least a portion of the electrode lead-out portion 22 can be exposed from the packaging portion and connected to an external circuit. The electrode lead-out portion 22 and the packaging portion of the pouch-shaped case 21 can be connected by a heat sealing or adhesive process to seal the soft package battery cell 20.

[0223] In this way, the soft package battery cell 20 in the present embodiment can package the electrode assembly by using the pouch-shaped case 21, and form electrical conduction with the electrode assembly by using the electrode lead-out portion 22 and form electrical connection with an external structure.

[0224] In the following, the battery device 100 provided by the present application will be further introduced according to specific embodiments.

[0225] Please refer to Figure 6 In the present embodiment, the battery device 100 includes a first box body 11, a second box body 12, and a plurality of battery cell modules 110.

[0226] The first box body 11 comprises a surrounding frame 111 and a bottom plate 112 connected to each other to form a containing space 101, and a plurality of battery monomer modules 110 are located in the containing space 101. The surface of the bottom plate 112 towards the battery monomers comprises a first area 112a and a second area 112b, the first area 112a is provided with a first flow channel 1121 below, and the first flow channel 1121 is used for containing a heat exchange medium; the second area 112b is provided with a first locking part 1122 which is concave.

[0227] The battery monomer module 110 comprises two first parts 30 arranged oppositely along a first direction X and two second parts 40 arranged oppositely along a second direction Y, and the two first parts 30 and the two second parts 40 jointly enclose a limiting space, and the battery monomer module 110 further comprises a plurality of soft-packet battery monomers 20 located in the limiting space and stacked along the first direction X.

[0228] The second box body 12 is arranged on the first box body 11, and the second box body 12 is connected to at least part of the first part 30 by bolt locking.

[0229] The first part 30 is provided with a connecting hole 301, and the battery device 100 further comprises a first connecting piece 50, the first connecting piece 50 is arranged by penetrating the connecting hole 301 and locked into the first locking part 1122 to lock the first part 30 to the bottom plate 112, so that the soft-packet battery monomer 20 is located on one side of the first area 112a along a third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other. Meanwhile, a third part 60 is arranged on the surface of the first area 112a, the third part 60 is located between the first area 112a and the soft-packet battery monomer 20, and the surfaces of the opposite sides of the third part 60 along the third direction Z are respectively bonded to the soft-packet battery monomer 20 and the first area 112a by the adhesive 61. The third part 60 has elasticity and the elasticity is better than that of the bottom plate 112, and the third part 60 is a heat-conducting pad.

[0230] Along the first direction X, among the two groups of battery monomer modules 110 adjacent to each other, the two first parts 30 arranged adjacent to each other abut. One of the two first parts 30 abutting each other comprises a first body part 311 and a protrusion 312 protruding from the first body part 311 along the first direction X, and the other of the two first parts 30 abutting each other comprises a second body part 321 and a groove 322 recessed from the second body part 321 along the first direction X; the first body part 311 and the second body part 321 abut and fit along the first direction X, and the protrusion 312 is embedded in the groove 322. The protrusion 312 and the second body part 321 are both provided with connecting holes 301, and the connecting holes 301 of the two are correspondingly arranged along the third direction Z, and the same first connecting piece 50 penetrates the connecting holes 301 of the protrusion 312 and the second body part 321 which are connected in communication to lock the two on the bottom plate 112.

[0231] The first box body 11 further comprises a first beam 113 extending along the first direction X, the first beam 113 being located at the middle of the frame 111 along the second direction Y and connected to the bottom plate 112; the frame 111 comprises two first side beams 1111 oppositely arranged along the second direction Y; the battery device 100 comprises two rows of battery monomer module columns arranged along the second direction Y, each row of battery monomer module columns comprising a plurality of battery monomer module 110 arranged along the first direction X, and the opposite ends of the first part 30 of each group of battery monomer module 110 being connected to the first side beam 1111 and the first beam 113 along the second direction Y, respectively.

[0232] Wherein, the first side beam 1111 is provided with a first locking hole 1112; the protrusion 312 and the second body part 321 are respectively provided with a second locking part 302 at the end part along the second direction Y. The battery device 100 further comprises a second connecting piece 70, and two second connecting pieces 70 can be used to pass through different first locking holes 1112 on the first side beam 1111 and be locked into the second locking part 302 on the protrusion 312 and the second body part 321, respectively.

[0233] Along the third direction Z, the soft-pack battery monomer 20 is arranged at one side of the bottom plate 112, the third direction Z, the first direction X and the second direction Y are perpendicular to each other; in the projection plane perpendicular to the third direction Z, the orthographic projection of the third part 60 is completely dislocated from the orthographic projection of the first side beam 1111, the orthographic projection of the first part 30, the orthographic projection of the second part 40 and the orthographic projection of the first beam 113.

[0234] Please refer to Figure 7 and Figure 2 Figure 3 Figure 6 Figure 7 Figure 2 Figure 3 Figure 6 Figure 7 Figure 2 Figure 3 Figure 6 Figure 7 Figure 2 Figure 3 Figure 6 Figure 7 Figure 2 Figure 3 Figure 6 Figure 7 Figures 2 to 7 Figures 2 to 7 Figures 2 to 7 Figures 2 to 8 Figures 2 to 8 Figure 8 Figure 8 Figure 9 Figure 2 Figure 10 Figures 2 to 9 Figure 1 Figure 2 The application further provides a power utilization device, comprising the battery device 100 as described above, and the battery device 100 is used to provide electric energy.

[0235] The power utilization device provided by the application is, for example, the vehicle 1000 as described above; the power utilization device comprises the battery device 100 as described above, and on the basis that the connection reliability of the first part 30 of the battery monomer module 110 to the bottom plate 112 is more optimal, the reliability of the power utilization device is also more optimal.

[0236] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized by: Comprising a first box body comprising a surrounding frame and a bottom plate connected to each other to form a containing space; a plurality of battery monomer modules located in the containing space, the battery monomer module comprising two first parts oppositely arranged along a first direction and two second parts oppositely arranged along a second direction, the two first parts and the two second parts together enclosing a limiting space, the battery monomer module further comprising a plurality of soft package battery monomers stacked along the first direction in the limiting space, the first direction being perpendicular to the second direction; a surface of the bottom plate facing the soft package battery monomers comprises a first area and a second area, the first area being used to carry the soft package battery monomers and being provided below with a first flow channel for containing heat exchange medium; the second area is provided with a first locking part concave downward, the first part is provided with a connecting hole, and the battery device further comprises a first connecting piece which is locked to the bottom plate by penetrating the connecting hole and locking into the first locking part; the battery device further comprises a third part, the third part is arranged between the first area and the soft package battery monomers in the first area, and the third part is a heat-conducting pad.

2. The battery device of claim 1, wherein: The heat conduction performance of the third part is better than that of air.

3. The battery device of claim 1, wherein: The heat conduction performance of the third part is better than that of nitrogen.

4. The battery device of claim 1, wherein: The thermal conductivity of the third part is 0.2 w / (m·k)-2w / (m·k).

5. The battery device of claim 1, wherein: The third part has elasticity, and the elasticity of the third part is better than that of the bottom plate.

6. The battery device of any one of claims 1-5, wherein: Along a third direction, the soft package battery monomers are arranged on one side of the bottom plate, the third direction, the first direction and the second direction are perpendicular to each other in pairs; along the third direction, the opposite side surfaces of the third part are respectively adhered to the soft package battery monomers and the bottom plate by the back adhesive.

7. The battery device of claim 6, wherein: The back adhesive is located in the first area.

8. The battery device of claim 1, wherein: Along the first direction, among two groups of adjacent battery monomer modules, the two first parts arranged adjacent to each other abut each other.

9. The battery device of claim 8, wherein: One of the two first parts abutting each other comprises a first body part and a protrusion protruding from the first body part along the first direction, and the other of the two first parts abutting each other comprises a second body part and a groove recessed in the second body part along the first direction; the first body part and the second body part abut and fit along the first direction, and the protrusion is embedded in the groove.

10. The battery device of claim 9, wherein: Along a third direction, the soft package battery monomers are arranged on one side of the bottom plate, the third direction, the first direction and the second direction are perpendicular to each other in pairs; the protrusion and the second body part are both provided with the connecting hole, and the connecting holes of the two are correspondingly arranged along the third direction, and the same first connecting piece penetrates the connecting holes of the protrusion and the second body part to lock them on the bottom plate.

11. The battery device of claim 1, wherein: Along the second direction, at least one side end of the first part of at least part of the battery monomer module is connected with the surrounding frame.

12. The battery device of claim 11, wherein: The frame comprises two first side beams oppositely arranged along the second direction, and the first side beams are provided with first locking holes; the end of the first component is provided with a second locking part along the second direction; the battery device further comprises a second connecting piece, which passes through the first locking hole from the outer surface of the first side beam and is locked into the second locking part.

13. The battery device of claim 12, wherein: The second connecting piece comprises a head part and a connecting part, and the connecting part is locked into the second locking part; the battery device further comprises a sealing piece, which is clamped between the head part and part of the wall surface of the first side beam.

14. The battery device of claim 12, wherein: Along the first direction, two groups of battery monomer modules adjacent to each other abut against two first components arranged adjacent to each other; one of the two first components abutting against each other comprises a first body part and a protrusion protruding from the first body part along the first direction, and the other of the two first components abutting against each other comprises a second body part and a groove recessed in the second body part along the first direction; the first body part and the second body part are in abutting fit along the first direction, and the protrusion is embedded in the groove.

15. The battery device of claim 14, wherein: The protrusion and the second body part are respectively provided with the second locking part, and two second connecting pieces pass through different first locking holes on the first side beam and are respectively locked into the second locking parts on the protrusion and the second body part.

16. The battery device of claim 11, wherein: The first box further comprises a first beam extending along the first direction, and along the second direction, the first beam is located in the middle of the frame and connected to the bottom plate; The frame comprises two first side beams oppositely arranged along the second direction; the battery device comprises two rows of battery monomer module columns arranged along the second direction, and each row of battery monomer module columns comprises a plurality of battery monomer modules arranged along the first direction; along the second direction, the opposite ends of the first components of each group of battery monomer modules are respectively connected to the first side beams and the first beam.

17. The battery device of claim 16, wherein: Along the third direction, the soft package battery monomer is arranged on one side of the bottom plate, and the third direction, the first direction and the second direction are perpendicular to each other; On a projection plane perpendicular to the third direction, the orthographic projection of the third component is completely misaligned with the orthographic projection of the first side beam, the orthographic projection of the first component, the orthographic projection of the second component and the orthographic projection of the first beam.

18. The battery device of claim 1, wherein: Along the third direction, the soft package battery monomer is arranged on one side of the bottom plate, and the third direction, the first direction and the second direction are perpendicular to each other; the second region comprises a first sub-region and a second sub-region, the first sub-region is provided with the first locking part, and the second sub-region is below a second flow channel for accommodating heat exchange medium, and the second flow channel is communicated with the first flow channel; on a projection plane perpendicular to the third direction, the orthographic projection of the second flow channel intersects with the orthographic projection of the first component.

19. The battery device of claim 1, wherein: The battery device further comprises a second box, and the second box is arranged on the first box and connected with at least part of the first component.

20. The battery device of claim 19, wherein: The second box body is connected to at least part of the first component by bolt locking.

21. The battery device of claim 19, wherein: The battery device further comprises a fifth component which is elastic and arranged between the second box body and the soft-pack battery cell.

22. The battery device of claim 21, wherein: The third component has better heat conduction performance than the fifth component.

23. The battery device of claim 1, wherein: In the same battery cell module, at least two adjacent soft-pack battery cells are provided with a sixth component which is elastic, and the third component has better heat conduction performance than the sixth component.

24. The battery device of claim 1, wherein: The soft-pack battery cell comprises a bag-shaped casing, an electrode assembly and an electrode lead-out portion; the electrode assembly is encapsulated in the bag-shaped casing, part of the electrode lead-out portion is located in the bag-shaped casing to connect the electrode assembly, and another part of the electrode lead-out portion is exposed from the bag-shaped casing.

25. An electrical device, comprising: A battery device as claimed in any one of claims 1 to 24 for providing electrical energy.

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