Battery device and electric equipment

Abstract

The invention relates to the technical field of battery manufacturing, and provides a battery device and electric equipment. The battery device includes a battery cell assembly, a thermal management component, and a case. The battery monomer assembly comprises a plurality of battery monomers which are arranged, each battery monomer is provided with an end cover and an electrode terminal which is arranged on the end cover in a protruding manner, and shoulders of the plurality of battery monomers are arranged to form a shoulder area; the heat management component comprises a first heat exchange plate, and the first heat exchange plate is arranged in the shoulder area; the box body comprises a first cover body, a second cover body and a frame body with openings at two ends, the first cover body and the second cover body respectively cover the openings at the two ends of the frame body to form an accommodating space, the battery monomer assembly and the heat management component are arranged in the accommodating space, and the first heat exchange plate faces the first cover body. The shoulder of the end cover is lower than the pole, so that the space of the shoulder of the end cover in the box body can be utilized, the space utilization rate of the box body is improved, and the energy density of the battery device is further improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery device and an electrical appliance. Background Technology

[0002] In related technologies, thermal management components are installed in the battery device to maintain the battery within its normal operating temperature range. However, these components occupy a large amount of space, resulting in low space utilization, reduced energy density of the battery device, and high production costs. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a battery device and an electrical appliance that can improve space utilization and increase the energy density of the battery device. The battery device includes:

[0004] A battery cell assembly includes a plurality of battery cells arranged in a row. Each battery cell includes an end cap and an electrode terminal protruding from the end cap. The portion of the end cap located to the side of the electrode terminal is the shoulder of the battery cell. The shoulders of the plurality of battery cells are arranged to form a shoulder region.

[0005] A thermal management component includes a first heat exchange plate disposed in the shoulder region;

[0006] The housing includes a first cover, a second cover, and a frame with openings at both ends. The first cover and the second cover respectively cover the openings at both ends of the frame to form an accommodating space. The battery cell assembly and the thermal management component are disposed within the accommodating space, and the first heat exchange plate faces the first cover.

[0007] In this embodiment, the shoulder of the end cap is lower than the electrode terminals. The first heat exchange plate is set on the shoulder of the end cap. This allows for heat exchange between the battery cells and the space of the shoulder of the end cap inside the housing, thereby improving the space utilization of the housing in the third direction and reducing the housing space occupied by the battery cell assembly for thermal management, thus improving the energy density of the battery device.

[0008] In some embodiments, the first heat exchange plate is integrally integrated with the first cover.

[0009] This embodiment improves the structural strength of the battery device. It also reduces the number of components required for assembly, lowers material costs, and increases assembly efficiency.

[0010] In some embodiments, the first heat exchange plate and the first cover are bonded together with structural adhesive.

[0011] In this embodiment, the structural adhesive has the characteristics of high strength and high adhesion. By using the structural adhesive to bond the first heat exchange plate to the first cover, a stable connection between the first heat exchange plate and the first cover can be achieved.

[0012] In some embodiments, the first heat exchange plate and the first cover are brazed together.

[0013] In this embodiment, the first heat exchange plate and the first cover are fixed by brazing, which can reduce structural deformation and improve the appearance.

[0014] In some embodiments, thermally conductive adhesive is provided between the first heat exchange plate and the shoulder of the battery cell.

[0015] In this embodiment, the thermally conductive adhesive has good thermal conductivity, which helps to directly transfer heat between the thermal management components and the battery cell assembly, thereby improving heat dissipation efficiency.

[0016] In some embodiments, a thermal pad is provided between the first heat exchange plate and the shoulder of the battery cell.

[0017] In this embodiment, the thermal pad is adapted to the contact surface of the first heat exchange plate and the battery cell, which can fill the gap, improve the heat transfer efficiency between the first heat exchange plate and the battery cell, and improve the thermal management effect of the battery cell assembly.

[0018] In some embodiments, a plurality of battery cells are arranged along a first direction to form a battery column, and a plurality of battery columns are arranged along a second direction to form a battery cell assembly;

[0019] The first heat exchange plate includes multiple shoulder heat exchange plates and two first current collectors. The multiple shoulder heat exchange plates are spaced apart along the second direction in the corresponding shoulder regions. The two first current collectors are respectively disposed on both sides of the multiple shoulder heat exchange plates along the first direction and are connected to the multiple shoulder heat exchange plates. Two adjacent shoulder heat exchange plates and two first current collectors enclose a void area. The projection of the electrode terminal of each battery cell along a third direction is located in the void area. The first direction, the second direction and the third direction intersect each other.

[0020] In this embodiment, heat exchange channels are formed in both the shoulder heat exchange plate and the first current collector, and the heat exchange medium flows in the heat exchange channels to dissipate heat from the battery cell assembly.

[0021] In some embodiments, the battery cell assembly further includes a busbar component, the electrode terminals include a positive terminal and a negative terminal, the busbar component is disposed between the positive terminal and the negative terminal of the battery cell and is located within the clearance area; the busbar component extends along a first direction.

[0022] In this embodiment, the busbar is used to collect electrical performance parameters of each battery cell, such as voltage values, to monitor the operating status of the battery cells.

[0023] In some embodiments, the thermal management component further includes a first connecting pipe and a two-way connector, the first connecting pipe being connected to one of the first manifolds, the two-way connector being connected to the first connecting pipe, and the two-way connector passing through the frame and used for connection to an external heat exchange source.

[0024] In this way, heat exchange medium can be provided to the first heat exchange plate, and the frame can support and limit the two-way joint.

[0025] In some embodiments, the thermal management component further includes a plurality of second heat exchange plates and a second manifold, each of the second heat exchange plates extending along the second direction, the plurality of second heat exchange plates being spaced apart along the first direction, and the plurality of second heat exchange plates being in communication with the second manifold.

[0026] In this embodiment, the second heat exchange plate is used to contain the heat exchange medium to regulate the battery temperature. The second heat exchange plate exchanges heat with the individual battery cells, enabling effective thermal management of the battery device. By using the first and second heat exchange plates to exchange heat between the battery cell assembly, heat exchange efficiency can be improved. For battery cells with high heat dissipation requirements, by adding a first heat exchange plate in addition to the second heat exchange plate, there is no need to thicken the second heat exchange plate to provide more heat exchange medium. Therefore, under the same conditions, space in the battery device can be saved and the energy density of the battery device can be increased.

[0027] In some embodiments, the second heat exchange plate includes a heat exchange plate body, a first plug and a flexible connecting pipe. One end of the flexible connecting pipe is connected to the end of the heat exchange plate body along the second direction, and the other end is connected to the first plug. The second manifold is provided with a second plug corresponding to the first plug, and the second plug and the first plug are connected.

[0028] In this embodiment, the heat exchange medium enters the heat exchange channel of the heat exchange plate body to exchange heat with the battery cells, reducing the risk of thermal runaway in the battery cells. The flexible connecting tube is made of a flexible material to meet the mating accuracy of the second connector and the flexible connecting tube, and to maintain a stable connection between the second connector and the flexible connecting tube when the battery cells expand.

[0029] In some embodiments, the thermal management component further includes a tee connector and a second connecting pipe, the second connecting pipe being connected to the second manifold, the first connecting pipe and the second connecting pipe being respectively connected to the tee connector, and the tee connector being inserted through the frame and used for connecting to an external heat exchange source.

[0030] In this embodiment, the three joints of the three-way connector are respectively connected to an external heat exchange source, a first heat exchange plate, and a second heat exchange plate to provide heat exchange medium to the first heat exchange plate and the second heat exchange plate.

[0031] In some embodiments, the second flow collector is integrally integrated with the second cover.

[0032] In this embodiment, the structural strength of the battery device can be improved. The battery cell assembly is fixed within the accommodating space formed by the first cover, the frame, and the second cover, which reduces the number of components required for assembly, lowers material costs, and improves assembly efficiency.

[0033] This application also provides an electrical device including the battery device described in any of the above claims, the battery device being used to store or provide electrical energy.

[0034] The electrical device provided in this application embodiment has the same beneficial effects as the battery device described above. The electrical device can be a mobile phone, portable device, laptop computer, electric vehicle, electric toy, power tool, vehicle, ship, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0035] In some embodiments, the electrical device is a vehicle, the vehicle including a frame and a floor, the floor being connected to the frame, the battery device being disposed below the floor, and the second cover facing the floor.

[0036] In this embodiment, the terminal of the battery cell faces the ground, and the first cold plate is set facing the ground on the side away from the vehicle floor. In this way, the heat generated when the thermal management components dissipate heat can be prevented from accumulating on the floor and wetting the carpet or other devices on the floor.

[0037] In some embodiments, the electrical equipment is a vehicle, the vehicle including a seat beam integrated with the second cover.

[0038] In this embodiment, the electrode terminals of the battery cell face the ground, and the first heat exchange plate is positioned facing the ground away from the second cover. This prevents heat generated during the heat dissipation of the thermal management components from accumulating on the second cover and wetting carpets or other devices on it. Integrated design improves the structural strength of the battery device. It also reduces the number of components required for vehicle assembly, improving overall vehicle assembly efficiency. Attached Figure Description

[0039] Figure 1 This is an exploded view of a battery device according to an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the structure of a single battery cell in one embodiment of this application;

[0041] Figure 3 This is a schematic diagram of the structure of the first heat exchange plate in one embodiment of this application;

[0042] Figure 4 for Figure 3 A structural schematic diagram of the first heat exchange plate from another perspective;

[0043] Figure 5 This is a schematic diagram of the structure of the battery cell assembly, thermal management component and frame in one embodiment of this application;

[0044] Figure 6 for Figure 5 Enlarged view of point A;

[0045] Figure 7 Exploded view of a battery device according to another embodiment of this application;

[0046] Figure 8 for Figure 1 A partial structural schematic diagram of the battery device shown.

[0047] Figure 9 for Figure 8 Enlarged view of point B;

[0048] Figure 10 This is a schematic diagram of the structure of the second heat exchange plate in one embodiment of this application;

[0049] Figure 11 for Figure 10 Enlarged view of point C;

[0050] Figure 12 This is a schematic diagram of the structure of the second flow collector in one embodiment of this application;

[0051] Figure 13 for Figure 12 Enlarged diagram of point D;

[0052] Figure 14 This is a side view of the second flow collector in one embodiment of this application;

[0053] Figure 15 for Figure 7 A partial structural schematic diagram of the battery device shown.

[0054] Figure 16 for Figure 15 Enlarged view of point E;

[0055] Figure 17 This is a structural schematic diagram of the second cover, seat beam, and thermal management component in one embodiment of this application;

[0056] Figure 18 for Figure 17Another structural schematic diagram of the second cover, seat beam, and thermal management components shown;

[0057] Figure 19 for Figure 18 Exploded view of the second cover, seat beam, and thermal management components shown;

[0058] Figure 20 This is a schematic diagram of the vehicle structure in one embodiment of this application.

[0059] Explanation of reference numerals in the attached figures

[0060] Battery assembly 100; battery cell assembly 10; battery cell 11; end cap 110; housing 111; shoulder 11a; large surface 11b; electrode terminal 112; connector 12; busbar 13; fixed end 131; output connector 14;

[0061] Thermal management component 20; first heat exchange plate 21; shoulder heat exchange plate 211; first manifold 212; first connecting pipe 213; second heat exchange plate 23; heat exchange plate body 231; manifold 2311; heat exchange tube 2312; first plug-in connector 232; flexible connecting pipe 233; second manifold 24; second connecting pipe 241; second plug-in connector 242; tee connector 25; two-way connector 26;

[0062] Box body 30; first cover 31; second cover 32; frame 33; frame body 331; fixed beam 332; opening 33a; thermal pad 40; structural adhesive 50; seat beam 200; vehicle 1000. Detailed Implementation

[0063] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0064] In the description of the embodiments of this application, it should be noted that the terms "first direction," "second direction," "third direction," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0066] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, "below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is less than that of the second feature.

[0067] In the description of this specification, references to terms such as "some embodiments," "exemplary," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of those different embodiments or examples.

[0068] In related technologies, thermal management components are installed in battery devices for thermal management. The common approach is to use a large-area cooling solution for individual battery cells. However, this occupies a large amount of internal space in the casing, resulting in low energy density and high production costs for the battery device.

[0069] In view of this, please refer to Figures 1 to 4This application provides a battery device 100 that utilizes the shoulder space of the battery cell 11 to house a thermal management component 20, thereby improving the space utilization of the housing 30 and increasing the energy density of the battery device 100. The battery device 100 includes a battery cell assembly 10, a thermal management component 20, and a housing 30. The battery cell assembly 10 includes a plurality of battery cells 11 arranged in a row. Each battery cell 11 has an end cap 110 and an electrode terminal 112 protruding from the end cap 110. The end cap 110 is located to the side of the electrode terminal 112, forming a shoulder of the battery cell 11, which is lower than the electrode terminal 112. The shoulders of the plurality of battery cells 11 are arranged to form a shoulder region. The thermal management component 20 includes a first heat exchange plate 21, which is disposed in the shoulder region. The housing 30 includes a first cover 31, a second cover 32, and a frame 33 with openings 33a at both ends. The first cover 31 and the second cover 32 respectively cover the openings 33a at both ends of the frame 33 to form an accommodating space. The battery cell assembly 10 and the thermal management component 20 are disposed in the accommodating space, with the first heat exchange plate 21 facing the first cover 31.

[0070] In this embodiment, the battery device 100 includes a plurality of battery cell assemblies 10 for providing voltage and capacity. Each battery cell assembly 10 includes a plurality of battery cells 11, which are connected in series, parallel, or mixed connections via a busbar.

[0071] The battery cell assembly 10 is formed by arranging multiple battery cells 11. As an example, the battery cell assembly 10 can be a battery module, which is formed by arranging and fixing multiple battery cells 11 into an independent module. As an example, a battery module can be formed by bundling multiple battery cells 11 together with cable ties.

[0072] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 30 and one or more battery cell assemblies 10, the battery cell assemblies 10 being housed in the housing 30.

[0073] For example, the battery cell assembly 10 can be a battery module, and the battery cell assembly 10 can be housed in the housing 30 by fixing the battery module in the housing 30.

[0074] For example, the battery cell assembly 10 can also be housed in the housing 30 by directly fixing multiple battery cells 11 to the housing 30.

[0075] In this embodiment of the application, the battery cell 11 can be a secondary battery, which refers to the battery cell 11 that can be used again after being discharged by recharging to activate the active material.

[0076] The battery cell 11 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0077] In some implementations, please refer to Figure 2 The battery cell 11 includes an end cap 110, a housing 111 with an opening, and electrode terminals 112. The end cap 110 is disposed on the housing 111, and the electrode terminals 112 are disposed on the end cap 110. The portion of the end cap 110 located outside the electrode terminals 112 forms a shoulder 11a of the battery cell 11. The shoulders of multiple battery cells 11 are connected to form one or more shoulder regions. The end cap 110 and the housing 111 can be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc. In some embodiments, the end cap 110 and the housing 111 can be a sealed structure or a non-sealed structure. As an example, when the end cap 110 and the housing 111 are non-sealed structures, the end cap 110 and the housing 111 serve to protect the electrode assembly. A sealing bag is also included between the end cap 110 and the housing 111 and the electrode assembly. The sealing bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating material or an aluminum-plastic film. When the end cap 110 and the housing 111 are sealed structures, the end cap 110 and the housing 111 are used to encapsulate components such as electrode assemblies and electrolytes.

[0078] As an example, the battery cell 11 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells. This application does not have any particular limitations.

[0079] This application uses a square-shell battery cell as an example for illustration. Exemplarily, the battery cell 11 includes an end cap 110 and a housing 111, and the shape of the end cap 110 and the housing 111 after installation is approximately a cuboid.

[0080] For example, please refer to Figure 1 Battery cells 11 are arranged along a first direction X to form a battery column, and multiple battery columns are arranged along a second direction Y to form a battery cell assembly 10. The large surface 11b of the battery cell 11 is arranged along the second direction Y. The height direction of the battery cell 11 is a third direction Z, which is perpendicular to the first direction X and the second direction Y.

[0081] For example, please refer to Figure 2When the end cap 110 is provided with two electrode terminals 112, and the two electrode terminals 112 are arranged at intervals along the second direction Y, the shoulder 11a of the battery cell 11 refers to the area of ​​the end cap 110 located outside the two electrode terminals 112 along the second direction Y. The large surface 11b of the battery cell 11 refers to the wall surface with the largest area of ​​the casing 111, that is, the area of ​​the large surface 11b of the battery cell 11 is larger than the area of ​​the other wall surfaces of the battery cell 11.

[0082] For example, when the end cap 110 is provided with an electrode terminal 112, the shoulder 11a of the battery cell 11 refers to the area located on both sides of the electrode terminal 112 along the second direction Y.

[0083] For example, the shoulder 11a can be recessed relative to other areas of the end cover 110 to form a recessed portion, that is, the height of the shoulder 11a along the third direction Z is lower than other parts of the end cover 110. The first heat exchange plate 21 is disposed on the recessed portion. In this way, the stepped end cover 110 can facilitate the installation and positioning of the first heat exchange plate 21 and play a limiting role for the first heat exchange plate 21.

[0084] For example, electrode terminal 112 includes a positive terminal and a negative terminal; see [link to relevant documentation]. Figure 5 and Figure 6 The battery cell assembly 10 also includes a connector 12. The electrode terminals 112 of the battery cell 11 are connected to the busbar component via the connector 12. The connector 12 and the electrode terminals 112 are connected by welding. The electrode terminals 112 are electrically connected to the tabs inside the battery cell 11. The electrode terminals 112 can be directly connected to the tabs or indirectly connected to the tabs via an adapter.

[0085] The thermal management component 20 is used for temperature control and heat dissipation of the battery cell assembly 10. The thermal management component 20 exchanges heat by connecting to an external heat exchange source. Exemplarily, the thermal management component 20 includes multiple heat exchange plates, such as a first heat exchange plate 21 and a second heat exchange plate 23. The materials of the heat exchange plates include, but are not limited to, high-strength and easily processed metal materials such as aluminum alloy and titanium alloy. Exemplarily, heat exchange channels are arranged on the heat exchange plates, and a heat exchange medium flows through the heat exchange channels to dissipate heat from the battery cell assembly 10. The heat exchange medium includes, but is not limited to, water, antifreeze, or ethanol.

[0086] For example, a heat exchange channel is formed in the first heat exchange plate 21, and the heat exchange medium flows in the heat exchange channel to exchange heat with the battery cell assembly 10.

[0087] For example, the thickness of the first heat exchange plate 21 is D, which is 3.5 to 5.0 mm. For example, D can be 3.5 mm, 3.8 mm, 4.0 mm, 4.3 mm, 4.5 mm, 4.8 mm or 5.0 mm.

[0088] For example, the highest point of the first heat exchange plate 21 away from the end cover 110 along the third direction Z is flush with the highest point of the electrode terminal 112 away from the end cover 110.

[0089] For example, the highest point of the first heat exchange plate 21 away from the end cover 110 along the third direction Z is lower than the highest point of the electrode terminal 112 away from the end cover 110.

[0090] In this embodiment, the shoulder 11a of the end cap 110 is lower than the electrode terminal 112. The first heat exchange plate 21 is disposed on the shoulder 11a of the end cap 110. This allows the space of the shoulder 11a of the end cap 110 inside the housing 30 to be utilized, thereby improving the space utilization rate of the housing 30 in the third direction Z, reducing the housing space occupied by the battery cell assembly 10 for thermal management, and thus improving the energy density of the battery device 100.

[0091] For example, the battery cell 11 is upright, meaning the second cover 32 is located in the direction of the housing 30 towards the ground, the electrode terminal 112 is located in the direction of the battery cell 11 away from the ground, and the first heat exchange plate 21 is located in the direction of the battery cell 11 away from the ground. For example, when the battery device 100 is used in a vehicle, the electrode terminal 112 of the battery cell 11 faces the side of the vehicle floor, and the first heat exchange plate 21 is disposed facing the vehicle floor. In this way, the structural stability of the battery device 100 can be improved, and the possibility of short circuits can be reduced.

[0092] For example, the battery cell 11 is inverted; please refer to [link / reference]. Figure 1 In other words, the first cover 31 is located in the direction of the housing 30 facing the ground, the electrode terminal 112 is located in the direction of the battery cell 11 facing the ground, and the first heat exchange plate 21 is set facing the ground. For example, when the battery device 100 is used in a vehicle, the electrode terminal 112 of the battery cell 11 faces the ground, and the first heat exchange plate 21 is set facing the ground. In this way, it is possible to avoid the cold energy generated when the thermal management component 20 dissipates heat from accumulating on the floor, and the surface of the floor facing the vehicle interior may be covered with water vapor, which could wet the carpet and other devices on the floor.

[0093] In some embodiments, the first cover 31 and the frame 33 may be integrally formed. Alternatively, the second cover 32 and the frame 33 may be integrally formed.

[0094] In some embodiments, a pressure relief mechanism is provided on the end cap 110 of the battery cell 11. The pressure relief mechanism is used to release the internal gas of the battery cell 11. When the battery cell 11 is inverted, the pressure relief mechanism also faces the ground, so that when the battery cell 11 experiences thermal runaway, it can release pressure towards the outside of the vehicle, reducing the adverse effects on the occupants inside the vehicle.

[0095] As an example, the internal pressure or temperature of the battery cell 11 is actuated to release the internal pressure or temperature when it reaches a predetermined threshold. When the internal pressure or temperature of the battery cell 11 reaches the predetermined threshold, the pressure relief mechanism is activated or a weak structure in the pressure relief mechanism is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. The threshold design varies depending on the design requirements. The threshold may depend on the materials of one or more of the positive electrode, negative electrode, electrolyte, and separator in the battery cell 11.

[0096] As an example, the pressure relief mechanism can be integrally formed with the end cap 110.

[0097] As an example, the pressure relief mechanism can also be separately configured and connected to the end cap 110.

[0098] The term "actuation" as used in this application refers to the pressure relief mechanism being activated or undergoing a certain state, thereby releasing the internal pressure and temperature of the battery cell 11. The actions of the pressure relief mechanism may include, but are not limited to: movement of components within the pressure relief mechanism to form an exhaust channel, rupture, breakage, tearing, or opening of at least a portion of the pressure relief mechanism, etc. When the pressure relief mechanism is actuated, the high-temperature, high-pressure substances inside the battery cell 11 are discharged outwards from the actuated portion as waste. This method allows for pressure and temperature relief of the battery cell 11 under controllable pressure or temperature conditions, thereby preventing potentially more serious accidents.

[0099] In some embodiments, when the end cap 110 and the housing 111 are non-sealed structures, the pressure relief mechanism can be configured as a through hole for discharging gas inside the battery cell 11.

[0100] The emissions from the battery cell 11 mentioned in this application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0101] In some embodiments, the first heat exchange plate 21 is integrally integrated with the first cover 31. This improves the structural strength of the battery device 100. When assembling the battery device 100, the first heat exchange plate 21 and the first cover 31 are integrally integrated to form a first cover assembly. The first cover assembly is first assembled with the frame 33, then the battery cell assembly 10 is installed, and finally the second cover 32 is installed; or, the second cover 32 is first assembled with the frame 33, then the battery cell assembly 10 is installed, and finally the first cover assembly is installed. The battery cell assembly 10 is fixed in the receiving space formed by the first cover 31, the frame 33, and the second cover 32, which reduces the number of parts required for assembly, lowers material costs, and improves assembly efficiency.

[0102] In some embodiments, please refer to Figure 7The first heat exchange plate 21 and the first cover 31 are bonded together with structural adhesive 50.

[0103] The structural adhesive 50 has high strength and high adhesion. By using the structural adhesive 50 to bond the first heat exchange plate 21 to the first cover 31, a stable connection between the first heat exchange plate 21 and the first cover 31 can be achieved.

[0104] For example, the structural adhesive 50 can be a UV adhesive, an epoxy structural adhesive, or a high-temperature resistant hot melt adhesive.

[0105] In some embodiments, the first heat exchange plate 21 and the first cover 31 are brazed. Brazing is a welding method in which a filler metal with a flux lower than the melting point of the workpiece and the workpiece are simultaneously heated to the melting temperature of the filler metal, and the liquid filler metal is used to fill the gaps in the solid workpiece to connect the metals. Using brazing to fix the first heat exchange plate 21 and the first cover 31 can reduce structural deformation and improve the appearance.

[0106] In some embodiments, thermally conductive adhesive is provided between the first heat exchange plate 21 and the shoulder 11a of the battery cell 11.

[0107] The thermally conductive adhesive has excellent thermal conductivity, which facilitates direct heat transfer between the thermal management component 20 and the battery cell assembly 10, improves heat dissipation efficiency, and extends the service life of the battery device 100. It also ensures a stable connection between the first heat exchange plate 21 and the battery cell 11.

[0108] In some embodiments, please refer to Figure 7 A thermal pad 40 is provided between the first heat exchange plate 21 and the shoulder 11a of the battery cell 11.

[0109] The thermal pad 40 is adapted to the contact surfaces of the first heat exchange plate 21 and the battery cell 11, filling gaps and completing heat transfer between the battery cell 11 and the first heat exchange plate 21, thereby improving the heat transfer efficiency between the first heat exchange plate 21 and the battery cell 11 and improving the thermal management effect of the battery cell assembly 10. It also has insulation and shockproof properties, playing a role in shock absorption, insulation and sealing.

[0110] For example, the thermal pad 40 is made of high-performance thermally conductive materials, such as thermally conductive silicone and glass fiber materials, which can enhance the structural strength of the thermal pad 40.

[0111] In some embodiments, please refer to Figure 5 and Figure 6Multiple battery cells 11 are arranged along a first direction to form a battery column, and multiple battery columns are arranged along a second direction to form a battery cell assembly 10. The first heat exchange plate 21 includes multiple shoulder heat exchange plates 211 and two first current collectors 212. The multiple shoulder heat exchange plates 211 are spaced apart along the second direction in the corresponding shoulder areas. The two first current collectors 212 are respectively located on both sides of the multiple shoulder heat exchange plates 211 along the first direction and are connected to the multiple shoulder heat exchange plates 211. Two adjacent shoulder heat exchange plates 211 and two first current collectors 212 enclose an empty area. The projection of the electrode terminal 112 of each battery cell 11 along a third direction is located in the empty area. The first direction, the second direction and the third direction intersect each other.

[0112] For example, the third direction is the height direction of the battery cell 11.

[0113] For example, the first direction, the second direction, and the third direction are perpendicular to each other.

[0114] For example, the battery cell 11 includes a housing 111 with an opening, an end cap 110 is disposed in the opening of the housing 111, the housing 111 is a square shell, the large side of the housing 111 is the large surface 11b of the battery cell 11, and the large surface 11b of the battery cell 11 is arranged along a second direction.

[0115] For example, the first collector 212 may be plate-shaped or tubular.

[0116] Both the shoulder heat exchange plate 211 and the first current collector 212 have heat exchange channels formed within them, and the heat exchange medium flows in the heat exchange channels to dissipate heat from the battery cell assembly 10. The heat exchange medium is transported to the first current collector 212 and the shoulder heat exchange plate 211 through the first connecting pipe 213.

[0117] For example, please refer to Figure 6 The thermal management component 20 also includes a first connecting pipe 213 and a two-way connector 26. The first connecting pipe 213 is connected to one of the first manifolds 212, and the two-way connector 26 is connected to the first connecting pipe 213 to provide heat exchange medium to the first heat exchange plate 21.

[0118] For example, please refer to Figure 6 The two-way connector 26 is inserted through the frame 33 and is used to connect to an external heat exchange source. In this way, the frame 33 can support and limit the two-way connector 26.

[0119] For example, the two-way connector 26 is plate-shaped or tubular.

[0120] For example, two first connecting pipes 213 and two-way connectors 26 are respectively provided. The two first connecting pipes 213 are provided at both ends of one of the first manifolds 212 along the second direction, and the two two-way connectors 26 are respectively provided corresponding to the two first connecting pipes 213. One of the first connecting pipes 213 is used to enter the heat exchange medium into the first manifold 212, and the other first connecting pipe 213 is used to discharge the heat exchange medium in the first manifold 212.

[0121] For example, please refer to Figure 6 The battery cell assembly 10 also includes a busbar component 13. The electrode terminal 112 includes a positive terminal and a negative terminal. The busbar component 13 is disposed between the positive terminal and the negative terminal of the battery cell 11 and is located in the clearance area. The busbar component 13 extends along the first direction X.

[0122] The current collector 13 includes, but is not limited to, a data acquisition board. The current collector 13 can collect the current from the battery cells 11, connect these currents to an external circuit, and collect the electrical performance parameters of each battery cell 11, such as voltage values, to monitor the operating status of the battery cells 11.

[0123] For example, please refer to Figure 6 The frame 33 includes a frame body 331 and two fixed beams 332. The frame body 331 is a frame structure. The two fixed beams 332 are disposed inside the frame body 331 and are spaced apart along the first direction X. The two ends of each fixed beam 332 are connected to the frame body 331 along the second direction Y. The two fixed beams 332 clamp the battery cell assembly 10 along the first direction X. The first current collector 212 is spaced apart from the fixed beams 332.

[0124] For example, please refer to Figure 6 The current collector 13 includes a fixed end 131, which is mounted on a fixed beam 332. The battery cell assembly 10 also includes an output bar 14, one end of which is connected to an electrode terminal 112, and the other end is mounted on the fixed beam 332. The first current collector 212 and the fixed beam 332 are spaced apart in the first direction X to reduce the possibility of the first current collector 212 interfering with the fixed end 131 and the output bar 14.

[0125] In some embodiments, please refer to Figures 7 to 14 The thermal management component 20 also includes a plurality of second heat exchange plates 23 and a second collector 24. Each second heat exchange plate 23 extends along a second direction, and the plurality of second heat exchange plates 23 are arranged at intervals along a first direction, and the plurality of second heat exchange plates 23 are connected to the second collector 24.

[0126] In this embodiment, the second heat exchange plate 23 is used to contain the heat exchange medium to regulate the battery temperature. The second heat exchange plate 23 exchanges heat with the battery cells, enabling effective thermal management of the battery device 100. By exchanging heat between the first heat exchange plate 21 and the second heat exchange plate 23 and the battery cell assembly 10, heat exchange efficiency can be improved. For battery cells with high heat dissipation requirements, by adding the first heat exchange plate 21 in addition to the second heat exchange plate 23, it is unnecessary to thicken the second heat exchange plate 23 to provide more heat exchange medium. Therefore, under the same conditions, space in the battery device can be saved and the energy density of the battery device can be increased. For example, please refer to... Figures 10 to 13 The second heat exchange plate 23 includes a heat exchange plate body 231, a first plug-in 232 and a flexible connecting pipe 233. One end of the flexible connecting pipe 233 is connected to the end of the heat exchange plate body 231 along the second direction, and the other end is connected to the first plug-in 232. A second plug-in 242 is provided on the second collector 24 corresponding to the first plug-in 232. The second plug-in 242 and the first plug-in 232 are plugged into each other.

[0127] For example, the second collector 24 is made of plastic.

[0128] For example, the second manifold 24 is extruded.

[0129] For example, the second manifold 24 can be plate-shaped or tubular.

[0130] For example, the second connector 242 and the first connector 232 are brazed together.

[0131] For example, the heat exchange plate body 231 includes a current collector 2311 and a heat exchange tube 2312.

[0132] In this embodiment, the heat exchange medium enters the heat exchange channel of the heat exchange plate body 231 to exchange heat with the battery cell 11, reducing the risk of thermal runaway of the battery cell. The flexible connecting pipe 233 is made of a flexible material to meet the mating accuracy of the first connector 232 and the second connector 242, and to maintain a stable connection between the first connector 232 and the second connector 242 when the battery cell expands.

[0133] For example, a second heat exchange plate 23 is provided between every two adjacent battery cells 11 to reduce the space occupied by the second heat exchange plate 23 in the housing 30 in the horizontal direction.

[0134] In some embodiments, please refer to Figures 14-19 The thermal management component 20 also includes a three-way connector 25 and a second connecting pipe 241. The second connecting pipe 241 is connected to the second manifold 24. The first connecting pipe 213 and the second connecting pipe 241 are respectively connected to the three-way connector 25. The three-way connector 25 passes through the frame 33 and is used to connect to an external heat exchange source.

[0135] The frame 33 provides support and limits the T-joint 25. The three joints of the T-joint 25 are respectively connected to an external heat exchange source, the first heat exchange plate 21, and the second heat exchange plate 23 to provide heat exchange medium to the first heat exchange plate 21 and the second heat exchange plate 23.

[0136] For example, two second connecting pipes 241 and two tee connectors 25 are provided respectively. The two second connecting pipes 241 are provided at both ends of one of the second manifolds 24 along the second direction, and the two tee connectors 25 are provided corresponding to the two second connecting pipes 241 respectively. One of the second connecting pipes 241 is used to enter the heat exchange medium into the second manifold 24, and the other second connecting pipe 241 is used to discharge the heat exchange medium in the second manifold 24.

[0137] In some embodiments, please refer to Figures 17-19 The second flow collector 24 is integrated with the second cover 32.

[0138] This improves the structural strength of the battery device 100. The first heat exchange plate 21 and the first cover 31 are integrated to form the first cover assembly, and the second current collector 24 and the three-way connector 25 are integrated with the second cover 32 to form the second cover assembly. When assembling the battery device 100, the first cover assembly is first assembled with the frame 33, then the battery cell assembly 10 is installed, and finally the second cover assembly is installed; or, the second cover assembly is first assembled with the frame 33, then the battery cell assembly 10 is installed, and finally the first cover assembly is installed. The battery cell assembly 10 is fixed in the accommodating space formed by the first cover 31, the frame 33, and the second cover 32, which reduces the number of parts required for assembly, lowers material costs, and improves assembly efficiency.

[0139] In some embodiments, please refer to Figures 1 to 6The battery device 100 includes a battery cell assembly 10, a thermal management component 20, and a housing 30. The battery cell assembly 10 includes a plurality of battery cells 11 arranged in a row. Each battery cell 11 includes an end cap 110 and an electrode terminal 112 protruding from the end cap 110. The portion of the end cap 110 located to the side of the electrode terminal 112 forms a shoulder of the battery cell 11, with its height lower than the electrode terminal 112. The shoulders of the plurality of battery cells 11 are arranged to form a shoulder region. The thermal management component 20 includes a first heat exchange plate 21 disposed in the shoulder region. The housing 30 includes a first cover 31, a second cover 32, and a frame 33 with openings 33a at both ends. The first cover 31 and the second cover 32 respectively cover the openings 33a at both ends of the frame 33 to form an accommodating space. The battery cell assembly 10 and the thermal management component 20 are disposed within the accommodating space, with the first heat exchange plate 21 facing the first cover 31. The first heat exchange plate 21 is integrally integrated with the first cover 31. The first heat exchange plate 21 and the first cover 31 are brazed together. A thermally conductive pad 40 is provided between the first heat exchange plate 21 and the shoulder 11a of the battery cell 11. Multiple battery cells 11 are arranged along a first direction to form a battery column, and multiple battery columns are arranged along a second direction to form a battery cell assembly 10. The first heat exchange plate 21 includes multiple shoulder heat exchange plates 211 and two first current collectors 212. The multiple shoulder heat exchange plates 211 are spaced apart along the second direction in the corresponding shoulder areas. The two first current collectors 212 are respectively located on both sides of the multiple shoulder heat exchange plates 211 along the first direction and are connected to the multiple shoulder heat exchange plates 211. Two adjacent shoulder heat exchange plates 211 and two first current collectors 212 enclose an empty area. The projection of the electrode terminal 112 of each battery cell 11 along a third direction is located in the empty area. The first direction, the second direction and the third direction intersect each other.

[0140] In this embodiment, the shoulder 11a of the end cap 110 is lower than the electrode terminal 112. The first heat exchange plate 21 is positioned on the shoulder 11a of the end cap 110, which utilizes the space within the housing 30's shoulder 11a, improving the space utilization rate of the housing 30 in the third direction Z, reducing the space occupied by the battery cell assembly 10 for thermal management, and thus increasing the energy density of the battery device 100. The integrated design improves the structural strength of the battery device 100. Brazing the first heat exchange plate 21 and the first cover 31 reduces structural deformation and improves the appearance. The use of a thermal pad 40 improves the heat transfer efficiency between the first heat exchange plate 21 and the battery cell 11, enhancing the thermal management effect of the battery cell assembly 10. Heat exchange channels are formed within both the shoulder heat exchange plate 211 and the first current collector 212, through which the heat exchange medium flows to dissipate heat from the battery cell assembly 10.

[0141] In some embodiments, please refer to Figures 7 to 19The battery device 100 includes a battery cell assembly 10, a thermal management component 20, and a housing 30. The battery cell assembly 10 includes a plurality of battery cells 11 arranged in a row. Each battery cell 11 includes an end cap 110 and an electrode terminal 112 protruding from the end cap 110. The portion of the end cap 110 located to the side of the electrode terminal 112 forms a shoulder of the battery cell 11, with its height lower than the electrode terminal 112. The shoulders of the plurality of battery cells 11 are arranged to form a shoulder region. The thermal management component 20 includes a first heat exchange plate 21 disposed in the shoulder region. The housing 30 includes a first cover 31, a second cover 32, and a frame 33 with openings 33a at both ends. The first cover 31 and the second cover 32 respectively cover the openings 33a at both ends of the frame 33 to form an accommodating space. The battery cell assembly 10 and the thermal management component 20 are disposed within the accommodating space, with the first heat exchange plate 21 facing the first cover 31. The first heat exchange plate 21 is integrally integrated with the first cover 31. The first heat exchange plate 21 and the first cover 31 are brazed together. A thermally conductive pad 40 is provided between the first heat exchange plate 21 and the shoulder 11a of the battery cell 11. Multiple battery cells 11 are arranged along a first direction to form a battery column, and multiple battery columns are arranged along a second direction to form a battery cell assembly 10. The first heat exchange plate 21 includes multiple shoulder heat exchange plates 211 and two first current collectors 212. The multiple shoulder heat exchange plates 211 are spaced apart along the second direction in the corresponding shoulder areas. The two first current collectors 212 are respectively located on both sides of the multiple shoulder heat exchange plates 211 along the first direction and are connected to the multiple shoulder heat exchange plates 211. Two adjacent shoulder heat exchange plates 211 and two first current collectors 212 enclose an empty area. The projection of the electrode terminal 112 of each battery cell 11 along a third direction is located in the empty area. The first direction, the second direction and the third direction intersect each other. The thermal management component 20 also includes multiple second heat exchange plates 23 and a second manifold 24. Each second heat exchange plate 23 extends along a second direction, and the multiple second heat exchange plates 23 are arranged at intervals along a first direction, and the multiple second heat exchange plates 23 are connected to the second manifold 24. The second heat exchange plate 23 includes a heat exchange plate body 231, a first plug-in 232, and a flexible connecting pipe 233. One end of the flexible connecting pipe 233 is connected to the end of the heat exchange plate body 231 along the second direction, and the other end is connected to the first plug-in 232. The second manifold 24 is provided with a second plug-in 242 corresponding to the first plug-in 232, and the second plug-in 242 and the first plug-in 232 are plugged into each other. The thermal management component 20 also includes a tee connector 25 and a second connecting pipe 241. The second connecting pipe 241 is connected to the second manifold 24, and the first connecting pipe 213 and the second connecting pipe 241 are respectively connected to the tee connector 25. The tee connector 25 passes through the frame 33 and is used to connect to an external heat exchange source. The second flow collector 24 is integrated with the second cover 32.

[0142] In this embodiment, heat exchange is performed on the battery cell assembly 10 through the first heat exchange plate 21 and the second heat exchange plate 23, which improves the heat exchange efficiency. For battery cells with high heat dissipation requirements, by adding the first heat exchange plate 21 on the basis of setting the second heat exchange plate 23, it is not necessary to thicken the second heat exchange plate 23 to provide more heat exchange medium. Thus, under the same conditions, the space of the battery device can be saved and the energy density of the battery device can be increased. The shoulder 11a of the end cover 110 is lower than the electrode terminal 112. Setting the first heat exchange plate 21 on the shoulder 11a of the end cover 110 can utilize the space of the shoulder 11a of the end cover 110 inside the housing 30, improve the space utilization rate of the housing 30 in the third direction Z, reduce the housing space occupied by the battery cell assembly 10 for thermal management, and thus improve the energy density of the battery device 100. The integrated approach can improve the structural strength of the battery device 100. The first heat exchange plate 21 and the first cover 31 are fixed by brazing, which can reduce structural deformation and improve the appearance. The use of a thermally conductive pad 40 improves the heat transfer efficiency between the first heat exchange plate 21 and the battery cell 11, thereby enhancing the thermal management effect of the battery cell assembly 10. Heat exchange channels are formed within both the shoulder heat exchange plate 211 and the first current collector 212, through which the heat exchange medium flows to dissipate heat from the battery cell assembly 10. The heat exchange medium is delivered to the first current collector 212 and the shoulder heat exchange plate 211 via the first connecting pipe 213. The three connectors of the three-way connector 25 are respectively connected to an external heat source, the first heat exchange plate 21, and the second heat exchange plate 23 to provide heat exchange medium to both plates. The second heat exchange plate 23 is used to contain the heat exchange medium to regulate the battery temperature. The second heat exchange plate 23 exchanges heat with the battery cell, enabling effective thermal management of the battery device 100. Heat exchange between the first heat exchange plate 21 and the second heat exchange plate 23 and the battery cell assembly 10 improves heat exchange efficiency. For battery cells with high heat dissipation requirements, by adding a first heat exchange plate 21 to the existing second heat exchange plate 23, it is not necessary to thicken the second heat exchange plate 23 to provide more heat exchange medium. This saves space and increases the energy density of the battery device under the same conditions. The heat exchange medium enters the heat exchange channel of the heat exchange plate body 231 to exchange heat with the battery cell 11, reducing the risk of thermal runaway. The flexible connecting pipe 233 is made of a flexible material to ensure the mating accuracy of the second connector 242 and the flexible connecting pipe 233, maintaining a stable connection between the second connector 242 and the flexible connecting pipe 233 when the battery cell expands. The integrated design of the second current collector 24 and the second cover 32 improves the structural strength of the battery device 100.

[0143] This application also provides an electrical device, which includes a battery device 100 according to any one of the embodiments of this application. The battery device 100 is used to store or provide electrical energy.

[0144] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 11, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0145] For example, please refer to Figure 20 The electrical equipment is a vehicle 1000, which includes a frame and a floor. The floor is connected to the frame. The battery device 100 is located under the floor, and the second cover 32 faces the floor.

[0146] In this embodiment, the electrode terminals 112 of the battery cell 11 face the ground, and the first heat exchange plate 21 is set facing the ground, away from the vehicle floor. In this way, the heat generated by the heat management component 20 during heat dissipation can be prevented from accumulating on the floor and wetting the carpet or other devices on the floor.

[0147] In some embodiments, the electrical equipment is a vehicle 1000, which includes a seat beam 200 that is integrally integrated with a second cover 32.

[0148] In this embodiment, the electrode terminals 112 of the battery cell 11 face the ground, and the first heat exchange plate 21 is positioned facing the ground away from the second cover 32. This prevents heat generated during the heat dissipation of the thermal management component 20 from accumulating on the second cover 32 and wetting carpets or other devices on the second cover 32. The integrated design of the seat beam 200 and the second cover 32 improves the structural strength of the battery device 100. It also reduces the number of components required for vehicle assembly, improving overall vehicle assembly efficiency.

[0149] Understandably, after the seat beam 200 and the second cover 32 are integrated, the side of the second cover 32 facing the interior of the vehicle becomes the vehicle floor.

[0150] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0151] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: A battery cell assembly includes a plurality of battery cells arranged in a row. Each battery cell includes an end cap and an electrode terminal protruding from the end cap. The portion of the end cap located to the side of the electrode terminal is the shoulder of the battery cell. The shoulders of the plurality of battery cells are arranged to form a shoulder region. A thermal management component includes a first heat exchange plate disposed in the shoulder region; The housing includes a first cover, a second cover, and a frame with openings at both ends. The first cover and the second cover respectively cover the openings at both ends of the frame to form an accommodating space. The battery cell assembly and the thermal management component are disposed within the accommodating space, and the first heat exchange plate faces the first cover.

2. The battery device according to claim 1, characterized in that, The first heat exchange plate is integrated with the first cover.

3. The battery device according to claim 2, characterized in that, The first heat exchange plate is bonded to the first cover by structural adhesive or by brazing.

4. The battery device according to claim 1, characterized in that, Thermally conductive adhesive or a thermally conductive pad is provided between the first heat exchange plate and the shoulder of the battery cell.

5. The battery device according to claim 1, characterized in that, A plurality of battery cells are arranged along a first direction to form a battery column, and a plurality of battery columns are arranged along a second direction to form the battery cell assembly; The first heat exchange plate includes multiple shoulder heat exchange plates and two first current collectors. The multiple shoulder heat exchange plates are spaced apart along the second direction in the corresponding shoulder regions. The two first current collectors are respectively disposed on both sides of the multiple shoulder heat exchange plates along the first direction and are connected to the multiple shoulder heat exchange plates. Two adjacent shoulder heat exchange plates and two first current collectors enclose a clearance area. The projection of the electrode terminal of each battery cell along a third direction is located in the clearance area. The first direction, the second direction and the third direction intersect each other.

6. The battery device according to claim 5, characterized in that, The battery cell assembly further includes a current-combining component, the electrode terminals include a positive terminal and a negative terminal, the current-combining component is disposed between the positive terminal and the negative terminal of the battery cell, and is located in the clearance area; The busbar extends along a first direction.

7. The battery device according to claim 5, characterized in that, The thermal management component further includes a first connecting pipe and a two-way connector. The first connecting pipe is connected to one of the first manifolds, and the two-way connector is connected to the first connecting pipe. The two-way connector passes through the frame and is used to connect to an external heat exchange source.

8. The battery device according to claim 7, characterized in that, The thermal management component further includes a plurality of second heat exchange plates and a second manifold, each of the second heat exchange plates extending along the second direction, the plurality of second heat exchange plates being arranged at intervals along the first direction, and the plurality of second heat exchange plates being connected to the second manifold.

9. The battery device according to claim 8, characterized in that, The second heat exchange plate includes a heat exchange plate body, a first plug and a flexible connecting pipe. One end of the flexible connecting pipe is connected to the end of the heat exchange plate body along the second direction, and the other end is connected to the first plug. A second plug is provided on the second manifold corresponding to the first plug, and the second plug and the first plug are plugged in and connected.

10. The battery device according to claim 8, characterized in that, The thermal management component further includes a tee connector and a second connecting pipe. The second connecting pipe is connected to the second manifold. The first connecting pipe and the second connecting pipe are respectively connected to the tee connector. The tee connector passes through the frame and is used to connect to an external heat exchange source.

11. The battery device according to claim 8, characterized in that, The second flow collector is integrated with the second cover.

12. An electrical appliance, characterized in that, Includes a battery device according to any one of claims 1 to 11, the battery device being used to store or provide electrical energy.

13. The electrical equipment according to claim 12, characterized in that, The electrical equipment is a vehicle, which includes a frame and a floor. The floor is connected to the frame, and the battery device is located below the floor. The second cover faces the floor.

14. The electrical equipment according to claim 12, characterized in that, The electrical equipment is a vehicle, and the vehicle includes a seat beam, which is integrally integrated with the second cover.

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