Battery apparatus and electrical device

Abstract

Provided are a battery apparatus (100) and an electrical device. The battery apparatus (100) comprises a battery cell assembly (10), a thermal management component (20), and a housing (30). The battery cell assembly (10) comprises a plurality of aligned battery cells (11), and each battery cell (11) is provided with an end cover (110) and electrode terminals (112) protruding from the end cover (110). Shoulder portions (11a) of the plurality of battery cells (11) are aligned to form a shoulder region. The thermal management component (20) comprises a first heat exchange plate (21), the first heat exchange plate (21) being disposed in the shoulder region. The housing (30) comprises a first cover (31), a second cover (32), and a frame (33) provided with openings (33a) at two ends thereof. The first cover (31) and the second cover (32) respectively cover the openings (33a) at the two ends of the frame (33) to form an accommodating space. The battery cell assembly (10) and the thermal management component (20) are arranged in the accommodating space. The first heat exchange plate (21) is arranged to face the first cover (31). The shoulder portions (11a) of the end covers (110) are lower than the electrode terminals (112), so that the space utilization rate of the housing (30) can be improved by using the space of the shoulder portions (11a) of the end covers (110) inside the housing (30), thereby increasing the energy density of the battery apparatus (100).

Description

Battery device and power consuming device

[0001] Cross Reference to Related Applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202411362026.0, filed on September 27, 2024, entitled “Battery device and power consuming device”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of battery manufacturing, and in particular to a battery device and a power consuming device. BACKGROUND

[0004] In related technologies, in order to maintain the battery in a normal working temperature range, a heat management component is arranged in the battery device to perform heat management. The heat management component occupies a large box space, resulting in low space utilization, affecting the energy density of the battery device, and causing high production cost. SUMMARY

[0005] Therefore, the embodiments of the present disclosure aim to provide a battery device and a power consuming device, which can improve the space utilization and the energy density of the battery device.

[0006] A first aspect of the embodiments of the present disclosure provides a battery device, which comprises:

[0007] A battery monomer assembly, comprising a plurality of battery monomers arranged in a row, each battery monomer comprising an end cover and an electrode terminal protruding from the end cover, the end cover being located at a side of the electrode terminal and serving as a shoulder of the battery monomer; and a shoulder region formed by the shoulders of the plurality of battery monomers;

[0008] A heat management component, comprising a first heat exchange plate arranged in the shoulder region;

[0009] A box, comprising a first cover, a second cover, and a frame with openings at two ends, the first cover and the second cover being respectively arranged at the openings at the two ends of the frame to form an accommodation space, the battery monomer assembly and the heat management component being arranged in the accommodation space, and the first heat exchange plate facing the first cover.

[0010] In this embodiment, the shoulder of the end cover is lower than the electrode terminal, and the first heat exchange plate is arranged at the shoulder of the end cover. In this way, the space utilization of the box in the third direction can be improved by using the space of the shoulder of the end cover in the box while performing heat exchange on the battery monomers, and the accommodation space in the box occupied by the battery monomer assembly for heat management can be reduced, thereby improving the energy density of the battery device.

[0011] In some embodiments, the first heat exchange plate is integrally integrated with the first cover.

[0012] In this embodiment, the structural strength of the battery device can be improved. The number of components required for assembly can be reduced, the material cost can be reduced, and the assembly efficiency can be improved.

[0013] In some embodiments, the first heat exchange plate and the first cover are connected by structural adhesive.

[0014] In this embodiment, the structural adhesive has high strength and high adhesion, and the first heat exchange plate and the first cover are connected by the structural adhesive, which can stably connect the first heat exchange plate and the first cover.

[0015] In some embodiments, the first heat exchange plate and the first cover are connected by brazing.

[0016] In this embodiment, the first heat exchange plate and the first cover are fixed by brazing, which can reduce structural deformation and beautify the appearance.

[0017] In some embodiments, a heat-conducting adhesive is arranged between the first heat exchange plate and the shoulder of the battery monomer.

[0018] In this embodiment, the heat-conducting adhesive has good heat-conducting performance, which helps the heat management component and the battery monomer assembly to directly transfer heat and improves the heat dissipation efficiency.

[0019] In some embodiments, a heat-conducting pad is arranged between the first heat exchange plate and the shoulder of the battery monomer.

[0020] In this embodiment, the heat-conducting pad is adapted to the contact surface of the first heat exchange plate and the battery monomer, which can fill the gap, improve the heat transfer efficiency of the first heat exchange plate and the battery monomer, and improve the heat management effect of the battery monomer assembly.

[0021] In some embodiments, a plurality of battery monomers 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 monomer assembly.

[0022] The first heat exchange plate includes a plurality of shoulder heat exchange plates and two first current collectors. The plurality of shoulder heat exchange plates are arranged in the corresponding shoulder regions along the second direction. The two first current collectors are arranged on both sides of the plurality of shoulder heat exchange plates along the first direction, and are connected with the plurality of shoulder heat exchange plates. Adjacent two shoulder heat exchange plates and two first current collectors form an empty area. The projection of the electrode terminal of each battery monomer along the third direction is located in the empty area. The first direction, the second direction and the third direction intersect with each other.

[0023] In this embodiment, the shoulder heat exchange plate and the first current collector are formed with heat exchange channels, and the heat exchange medium flows in the heat exchange channels to dissipate heat of the battery monomer assembly.

[0024] In some embodiments, the battery cell assembly further comprises a busbar component, the electrode terminal comprises a positive pole and a negative pole, and the busbar component is arranged between the positive pole and the negative pole of the battery cell and located in the empty region; the busbar component extends along the first direction.

[0025] In this embodiment, the busbar component is used to collect the electrical performance parameters of each battery cell, such as voltage value, to monitor the working state of the battery cell.

[0026] In some embodiments, the thermal management component further comprises a first connecting pipe and a two-way connector, the first connecting pipe is connected to one of the first current collectors, and the two-way connector is connected to the first connecting pipe and penetrates the frame and is used to connect with an external heat exchange source.

[0027] In this way, the heat exchange medium can be provided to the first heat exchange plate, and the frame can support and limit the two-way connector.

[0028] In some embodiments, the thermal management component further comprises a plurality of second heat exchange plates and a second current collector, each second heat exchange plate extends along the second direction, the plurality of second heat exchange plates are arranged in the first direction, and the plurality of second heat exchange plates are in communication with the second current collector.

[0029] In this embodiment, the second heat exchange plate is used to accommodate the heat exchange medium to adjust the temperature of the battery. The second heat exchange plate exchanges heat with the battery cell, which can effectively manage the battery device. By exchanging heat between the battery cell assembly and the first heat exchange plate and the second heat exchange plate, the heat exchange efficiency can be improved. For battery cells with high heat dissipation requirements, by adding the first heat exchange plate based on the second heat exchange plate, it is not necessary to thicken the second heat exchange plate to provide more heat exchange medium, thereby saving the space of the battery device and improving the energy density of the battery device under the same conditions.

[0030] In some embodiments, the second heat exchange plate comprises a heat exchange plate body, a first plug connector, 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 connector, a second plug connector is arranged on the second current collector corresponding to the first plug connector, and the second plug connector is connected to the first plug connector.

[0031] In this embodiment, the heat exchange medium enters the heat exchange channel of the heat exchange plate body to exchange heat with the battery cell, thereby reducing the risk of thermal runaway of the battery cell. The material of the flexible connecting pipe is flexible to meet the plug-in accuracy of the second plug connector and the flexible connecting pipe, and to maintain the stable connection of the second plug connector and the flexible connecting pipe when the battery cell expands.

[0032] In some embodiments, the heat management component further comprises a tee joint 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 in communication with the tee joint respectively, and the tee joint is arranged in the frame and used for connecting with an external heat exchange source.

[0033] In this embodiment, the three joints of the tee joint are in communication with the external heat exchange source, the first heat exchange plate and the second heat exchange plate respectively, so as to provide heat exchange medium to the first heat exchange plate and the second heat exchange plate.

[0034] In some embodiments, the second manifold is integrally integrated with the second cover.

[0035] In this embodiment, the structural strength of the battery device can be improved. The battery monomer assembly is fixed in the accommodating space formed by the first cover, the frame and the second cover, the required parts for assembly can be reduced, the material cost can be reduced, and the assembly efficiency can be improved.

[0036] The second aspect of the embodiment of the present disclosure provides a power consuming device, which comprises the battery device of any one of the above.

[0037] The power consuming device provided by the embodiment of the present disclosure has the same beneficial effects as the above-mentioned battery device. The power consuming device can be a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric toy, an electric tool, a vehicle, a ship and a spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0038] In some embodiments, the power consuming device is a vehicle, the vehicle comprises a vehicle frame and a floor, the floor is connected to the vehicle frame, and the battery device is arranged below the floor, and the second cover faces the floor.

[0039] In this embodiment, the pole of the battery monomer faces the ground, and the first cold plate is arranged to face the ground and is away from the side of the floor of the vehicle, so that the heat generated during heat dissipation of the heat management component can be avoided from accumulating on the floor and wetting the carpet and other devices on the floor.

[0040] In some embodiments, the power consuming device is a vehicle, the vehicle comprises a seat beam, and the seat beam is integrally integrated with the second cover.

[0041] In this embodiment, the electrode terminal of the battery monomer faces the ground, and the first heat exchange plate is arranged to face the ground and is away from the side of the second cover, so that the heat generated during heat dissipation of the heat management component can be avoided from accumulating on the second cover and wetting the carpet and other devices on the second cover. Integrally integrating can improve the structural strength of the battery device. The required parts for assembly on the vehicle can be reduced, and the assembly efficiency of the whole vehicle can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0042] FIG. 1 is an exploded view of a battery device in an embodiment of the present disclosure;

[0043] FIG. 2 is a structural schematic diagram of a battery cell in an embodiment of the present disclosure;

[0044] FIG. 3 is a structural schematic diagram of a first heat exchange plate in an embodiment of the present disclosure;

[0045] FIG. 4 is a structural schematic diagram of the first heat exchange plate shown in FIG. 3 from another perspective;

[0046] FIG. 5 is a structural schematic diagram of a battery cell assembly, a thermal management component, and a frame in an embodiment of the present disclosure;

[0047] FIG. 6 is an enlarged schematic diagram of A in FIG. 5;

[0048] FIG. 7 is an exploded view of a battery device in another embodiment of the present disclosure;

[0049] FIG. 8 is a partial structural schematic diagram of the battery device shown in FIG. 1;

[0050] FIG. 9 is an enlarged schematic diagram of B in FIG. 8;

[0051] FIG. 10 is a structural schematic diagram of a second heat exchange plate in an embodiment of the present disclosure;

[0052] FIG. 11 is an enlarged schematic diagram of C in FIG. 10;

[0053] FIG. 12 is a structural schematic diagram of a second current collector in an embodiment of the present disclosure;

[0054] FIG. 13 is an enlarged schematic diagram of D in FIG. 12;

[0055] FIG. 14 is a side view schematic diagram of the second current collector in an embodiment of the present disclosure;

[0056] FIG. 15 is a partial structural schematic diagram of the battery device shown in FIG. 7;

[0057] FIG. 16 is an enlarged schematic diagram of E in FIG. 15;

[0058] FIG. 17 is a structural schematic diagram of a second cover, a seat beam, and a thermal management component in an embodiment of the present disclosure;

[0059] FIG. 18 is a structural schematic diagram of the second cover, the seat beam, and the thermal management component shown in FIG. 17 from another perspective;

[0060] FIG. 19 is an exploded view of the second cover, the seat beam, and the thermal management component shown in FIG. 18;

[0061] FIG. 20 is a structural schematic diagram of a vehicle in an embodiment of the present disclosure.

[0062] The reference signs are explained as follows: battery device 100; battery cell assembly 10; battery cell 11; end cover 110; shell 111; shoulder 11a; large face 11b; electrode terminal 112; gasket 12; busbar component 13; fixed end 131; output gasket 14; thermal management component 20; first heat exchange plate 21; shoulder heat exchange plate 211; first current collector 212; first connector 213; second heat exchange plate 23; heat exchange plate body 231; current collector 2311; heat exchange tube 2312; first plug 232; flexible connecting tube 233; second current collector 24; second connector 241; second plug 242; tee joint 25; two-way joint 26; 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 DESCRIPTION

[0063] The embodiments of the present disclosure will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present disclosure, but cannot be used to limit the scope of the present disclosure.

[0064] In the description of the embodiments of the present disclosure, it should be noted that the terms "first direction", "second direction", "third direction", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying 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 embodiments of the present disclosure. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0065] In the description of the embodiments of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above-mentioned term in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0066] In the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature can be directly below or obliquely below the second feature, or it can only mean that the first feature is lower in level than the second feature.

[0067] In the description of the specification, the description of the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are contained in at least one embodiment or example of the embodiments of the present disclosure. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine different embodiments or examples described in the present disclosure and the features of different embodiments or examples without contradiction.

[0068] In the related art, in the battery device, the heat management component is arranged for heat management, and the technical solution of large surface cooling of the battery monomer is usually adopted, but it occupies a large internal space of the box body, resulting in low energy density of the battery device and high production cost.

[0069] Therefore, referring to FIGS. 1 to 4, the embodiments of the present disclosure provide a battery device 100, which can arrange the heat management component 20 in the shoulder space of the battery monomer 11, improve the space utilization rate of the box body 30, and improve the energy density of the battery device 100. The battery device 100 comprises a battery monomer assembly 10, a heat management component 20 and a box body 30. The battery monomer assembly 10 comprises a plurality of battery monomers 11 arranged in an array, the battery monomer 11 has an end cover 110 and an electrode terminal 112 protrudingly arranged on the end cover 110, the end cover 110 is located at the side of the electrode terminal 112 as the shoulder of the battery monomer 11, and the height of the end cover 110 is lower than that of the electrode terminal 112; the shoulders of the plurality of battery monomers 11 are arranged to form a shoulder region; the heat management component 20 comprises a first heat exchange plate 21, and the first heat exchange plate 21 is arranged in the shoulder region; the box body 30 comprises 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 are respectively arranged at the openings 33a at both ends of the frame 33 to form a containing space, the battery monomer assembly 10 and the heat management component 20 are arranged in the containing space, and the first heat exchange plate 21 faces the first cover 31.

[0070] In the embodiments of the present disclosure, the battery device 100 comprises a plurality of battery monomer assemblies 10 for providing voltage and capacity. The battery monomer assembly 10 comprises a plurality of battery monomers 11, and the plurality of battery monomers 11 are connected in series, in parallel or in a mixed connection mode through a busbar component.

[0071] The battery monomer assembly 10 is formed by arranging a plurality of battery monomers 11. As an example, the battery monomer assembly 10 can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery monomers 11 to form an independent module. As an example, the battery module can be formed by bundling a plurality of battery monomers 11 with a cable tie.

[0072] In some embodiments, the battery device 100 can be a battery pack including a case 30 and one or more battery cell assemblies 10 housed in the case 30.

[0073] By way of example, the battery cell assembly 10 can be a battery module, and the battery cell assembly 10 can be housed in the case 30 by fixing the battery module in the case 30.

[0074] By way of example, the battery cell assembly 10 can also be housed in the case 30 by fixing a plurality of battery cells 11 directly to the case 30.

[0075] In the embodiments of the present disclosure, the battery cell 11 can be a secondary battery, which refers to a battery cell 11 that can be activated by charging after discharging.

[0076] The battery cell 11 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., and the present disclosure is not limited thereto.

[0077] In some embodiments, referring to FIG. 2, the battery cell 11 includes an end cover 110, a housing 111 having an opening, and an electrode terminal 112, the end cover 110 is disposed on the housing 111, the electrode terminal 112 is disposed on the end cover 110, and the end cover 110 at a position outside the electrode terminal 112 is a shoulder portion 11a of the battery cell 11. The shoulder portions of a plurality of battery cells 11 communicate to form one or more shoulder regions. The end cover 110 and the housing 111 can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc. In some embodiments, the end cover 110 and the housing 111 can be a sealed structure, or can be a non-sealed structure. By way of example, when the end cover 110 and the housing 111 are a non-sealed structure, the end cover 110 and the housing 111 serve to protect the electrode assembly, and a sealing bag is further included between the end cover 110 and the housing 111 and the electrode assembly, the sealing bag is used to package the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating member or an aluminum-plastic film. When the end cover 110 and the housing 111 are a sealed structure, the end cover 110 and the housing 111 are used to package the electrode assembly, the electrolyte, and other components.

[0078] By way of 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, the prismatic battery cell includes a square battery cell, a blade-shaped battery cell, a multi-prismatic battery cell, such as a hexagonal battery cell, etc., and the present disclosure is not particularly limited.

[0079] The battery monomer 11 comprises an end cover 110 and a shell 111. The shape of the end cover 110 and the shell 111 after installation is approximately cuboid.

[0080] Referring to FIG. 1, the battery monomers 11 are arranged along a first direction X to form a battery column, and a plurality of battery columns are arranged along a second direction Y to form a battery monomer assembly 10. The large surface 11b of the battery monomer 11 is arranged along the second direction Y. The height direction of the battery monomer 11 is a third direction Z, which is perpendicular to the first direction X and the second direction Y.

[0081] Referring to FIG. 2, when the end cover 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 monomer 11 refers to the area of the end cover 110 located outside the two electrode terminals 112 along the second direction Y. The large surface 11b of the battery monomer 11 refers to the wall surface with the largest area of the shell 111, that is, the area of the large surface 11b of the battery monomer 11 is larger than the area of other wall surfaces of the battery monomer 11.

[0082] Referring to FIG. 2, when the end cover 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 monomer 11 refers to the area of the end cover 110 located outside the two electrode terminals 112 along the second direction Y. The large surface 11b of the battery monomer 11 refers to the wall surface with the largest area of the shell 111, that is, the area of the large surface 11b of the battery monomer 11 is larger than the area of other wall surfaces of the battery monomer 11.

[0083] Referring to FIG. 2, when the end cover 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 monomer 11 refers to the area of the end cover 110 located outside the two electrode terminals 112 along the second direction Y. The large surface 11b of the battery monomer 11 refers to the wall surface with the largest area of the shell 111, that is, the area of the large surface 11b of the battery monomer 11 is larger than the area of other wall surfaces of the battery monomer 11.

[0084] Referring to FIG. 5 and FIG. 6, the battery monomer assembly 10 further comprises a tab 12. The electrode terminal 112 of the battery monomer 11 is connected to the busbar component through the tab 12, and the tab 12 is connected to the electrode terminal 112 through welding. The electrode terminal 112 is electrically connected to the tab in the battery monomer 11. The electrode terminal 112 can be directly connected to the tab, or indirectly connected to the tab through an adapter component.

[0085] The thermal management component 20 is used for temperature control and heat dissipation of the battery monomer assembly 10. The thermal management component 20 exchanges heat by connecting an external heat exchange source. Exemplarily, the thermal management component 20 comprises a plurality of heat exchange plates, for example, a first heat exchange plate 21 and a second heat exchange plate 23, and the material of the heat exchange plates comprises but is not limited to aluminum alloy, titanium alloy and other high-strength and easy-to-process metal materials. Exemplarily, the heat exchange plates are provided with heat exchange channels, and the heat exchange medium flows in the heat exchange channels to dissipate heat of the battery monomer assembly 10. The heat exchange medium comprises but is not limited to water, antifreeze or ethanol.

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

[0087] Exemplarily, the thickness of the first heat exchange plate 21 is D, and D is 3.5-5.0 mm (millimeters). Exemplarily, 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] Exemplarily, the highest point of the first heat exchange plate 21 away from the end cover 110 is flush with the highest point of the electrode terminal 112 away from the end cover 110 along the third direction Z.

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

[0090] In this embodiment, the shoulder 11a of the end cover 110 is lower than the electrode terminal 112, and the first heat exchange plate 21 is arranged on the shoulder 11a of the end cover 110. The space of the shoulder 11a of the end cover 110 in the box body 30 can be utilized, the space utilization of the box body 30 in the third direction Z is improved, the accommodation space of the battery monomer assembly 10 for heat management in the box body 30 is reduced, and the energy density of the battery device 100 is further improved.

[0091] Exemplarily, the battery monomer 11 is upright, that is, the second cover 32 is located in the direction of the ground of the box body 30, the electrode terminal 112 is located in the direction away from the ground of the battery monomer 11, and the first heat exchange plate 21 is located in the direction away from the ground of the battery monomer 11. For example, when the battery device 100 is used for a vehicle, the electrode terminal 112 of the battery monomer 11 is directed to one side of the vehicle floor, and the first heat exchange plate 21 is arranged towards the vehicle floor. In this way, the stability of the structure of the battery device 100 can be improved, and the possibility of short circuit can be reduced.

[0092] As an example, the battery cell 11 is inverted, please refer to FIG. 1, that is, the first cover 31 is located in the direction of the box 30 towards the ground, the electrode terminal 112 is located in the direction of the battery cell 11 towards the ground, and the first heat exchange plate 21 is arranged towards the ground. For example, when the battery device 100 is used in a vehicle, the electrode terminal 112 of the battery cell 11 is towards the ground, and the first heat exchange plate 21 is arranged towards the ground. In this way, the cold generated during heat dissipation of the thermal management component 20 can be avoided from accumulating on the floor, and the surface of the floor towards the inside of the vehicle is attached with water vapor, which can wet the carpet and other devices on the floor.

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

[0094] In some embodiments, a pressure relief mechanism is arranged on the end cover 110 of the battery cell 11. The pressure relief mechanism is used to discharge the internal gas of the battery cell 11. When the battery cell 11 is inverted, the pressure relief mechanism is also towards the ground. When the battery cell 11 is in thermal runaway, the pressure relief mechanism can be discharged to the outside of the vehicle, thereby reducing the adverse effects on the passengers in 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 performs an action or a weak structure provided in the pressure relief mechanism is broken, thereby forming an opening or a passage for the internal pressure or temperature to be released. The threshold value is designed to be different according to different design requirements. The threshold value can depend on the material of one or more of the positive plate, the negative plate, the electrolyte, and the separator in the battery cell 11.

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

[0097] As an example, the pressure relief mechanism can also be provided separately from the end cover 110 and connected.

[0098] The "actuation" mentioned in the present disclosure refers to the pressure relief mechanism generating an action or being activated to a certain state, so that the internal pressure and temperature of the battery cell 11 can be released. The action generated by the pressure relief mechanism can include but is not limited to: the movement of the components in the pressure relief mechanism forming an exhaust passage, at least a part of the pressure relief mechanism being broken, crushed, torn or opened, etc. When the pressure relief mechanism is actuated, the high-temperature and high-pressure substances inside the battery cell 11 will be discharged outward from the actuated part as exhaust. In this way, the battery cell 11 can be pressure-released and temperature-released under controllable pressure or temperature, thereby avoiding potential more serious accidents.

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

[0100] The discharge from the battery monomer 11 mentioned in the present disclosure includes but is not limited to: electrolyte, dissolved or split positive and negative electrode sheets, fragments of separators, high-temperature and high-pressure gas generated by reaction, flames, etc.

[0101] In some embodiments, the first heat exchange plate 21 is integrally integrated with the first cover 31. In this way, the structural strength of the battery device 100 can be improved. 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 assembled with the frame 33 first, then the battery monomer assembly 10 is installed, and finally the second cover 32 is installed; or, the second cover 32 is assembled with the frame 33 first, then the battery monomer assembly 10 is installed, and finally the first cover assembly is installed. The battery monomer assembly 10 is fixed in the accommodating space formed by the first cover 31, the frame 33 and the second cover 32, which can reduce the required parts during assembly, reduce material cost and improve assembly efficiency.

[0102] In some embodiments, referring to FIG. 7, the first heat exchange plate 21 and the first cover 31 are bonded by structural adhesive 50.

[0103] The structural adhesive 50 has high strength and high adhesion, and bonding the first heat exchange plate 21 and the first cover 31 by the structural adhesive 50 can stably connect the first heat exchange plate 21 and the first cover 31.

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

[0105] In some embodiments, the first heat exchange plate 21 and the first cover 31 are welded by brazing. Brazing refers to a welding method in which the filler metal and the workpiece are heated to the melting temperature of the filler metal at the same time, and the liquid filler metal is used to fill the gap of the solid workpiece to connect the metals. By using brazing to fix the first heat exchange plate 21 and the first cover 31, the structural deformation can be reduced and the appearance can be beautified.

[0106] In some embodiments, the first heat exchange plate 21 and the shoulder 11a of the battery monomer 11 are provided with heat-conducting glue.

[0107] The heat-conducting glue has good heat-conducting performance, which helps the heat management component 20 and the battery monomer assembly 10 to directly transfer heat, improves the heat dissipation efficiency, and prolongs the service life of the battery device 100. At the same time, the first heat exchange plate 21 and the battery monomer 11 can be stably connected.

[0108] In some embodiments, referring to FIG. 7, a heat-conducting pad 40 is arranged between the first heat exchange plate 21 and the shoulder portion 11a of the battery cell 11.

[0109] The heat-conducting pad 40 is adapted to the contact surfaces of the first heat exchange plate 21 and the battery cell 11, can fill the gaps, complete the heat transfer between the battery cell 11 and the first heat exchange plate 21, thereby improving the heat transfer efficiency of the first heat exchange plate 21 and the battery cell 11, and improving the thermal management effect of the battery cell assembly 10. At the same time, it has insulation and shockproof performance, and plays the roles of shock absorption, insulation and sealing, etc.

[0110] Exemplarily, the heat-conducting pad 40 is made of high-performance heat-conducting materials, for example, made of heat-conducting silica gel materials and glass fiber materials, which can enhance the structural strength of the heat-conducting pad 40.

[0111] In some embodiments, referring to FIG. 5 and FIG. 6, a plurality of battery cells 11 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 10; the first heat exchange plate 21 includes a plurality of shoulder heat exchange plates 211 and two first current collectors 212, the plurality of shoulder heat exchange plates 211 are arranged in the corresponding shoulder regions along the second direction, and the two first current collectors 212 are arranged on both sides of the plurality of shoulder heat exchange plates 211 along the first direction and are connected with the plurality of shoulder heat exchange plates 211, and the adjacent two shoulder heat exchange plates 211 and the 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, and the first direction, the second direction and the third direction are perpendicular to each other.

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

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

[0114] Exemplarily, the battery cell 11 includes a shell 111 with an opening, and an end cover 110 is arranged at the opening of the shell 111, the shell 111 is a square shell, and a large side surface of the shell 111 is a large surface 11b of the battery cell 11, and the large surface 11b of the battery cell 11 is arranged along the second direction.

[0115] Exemplarily, the first current collector 212 can be plate-shaped or tubular.

[0116] The shoulder heat exchange plate 211 and the first current collector 212 are both formed with heat exchange channels, and a heat exchange medium flows in the heat exchange channels to dissipate heat of the battery cell assembly 10. The heat exchange medium is delivered to the first current collector 212 and the shoulder heat exchange plate 211 through the first connecting pipe 213.

[0117] Exemplarily, referring to FIG. 6, the heat management component 20 further comprises a first pipe 213 connected to one of the first current collectors 212 and a two-way joint 26 connected to the first pipe 213 to provide the heat exchange medium to the first heat exchange plate 21.

[0118] Exemplarily, referring to FIG. 6, the two-way joint 26 is arranged in the frame 33 and used to connect to the external heat exchange source. In this way, the frame 33 can support and limit the two-way joint 26.

[0119] Exemplarily, the two-way joint 26 is in the shape of a plate or a tube.

[0120] Exemplarily, two first pipes 213 are arranged at two ends of one of the first current collectors 212 along the second direction, and two two-way joints 26 are arranged corresponding to the two first pipes 213. One of the first pipes 213 is used to collect the heat exchange medium into the first current collector 212, and the other first pipe 213 is used to discharge the heat exchange medium in the first current collector 212.

[0121] Exemplarily, referring to FIG. 6, the battery cell assembly 10 further comprises a current collection component 13, the electrode terminal 112 comprises a positive pole and a negative pole, the current collection component 13 is arranged between the positive pole and the negative pole of the battery cell 11 and located in the empty area, and the current collection component 13 extends along the first direction X.

[0122] The current collection component 13 comprises but is not limited to a collection plate. The current collection component 13 can collect the current from the battery cell 11, connect the collected current to the external circuit, and collect the electrical performance parameters such as the voltage value of each battery cell 11 to monitor the working state of the battery cell 11.

[0123] Exemplarily, referring to FIG. 6, the frame 33 comprises a frame body 331 and two fixing beams 332, the frame body 331 is a frame structure, the two fixing beams 332 are arranged in the frame body 331 and spaced apart along the first direction X, each fixing beam 332 is connected to the frame body 331 at two ends along the second direction Y, the two fixing beams 332 clamp the battery cell assembly 10 along the first direction X, and the first current collector 212 is spaced apart from the fixing beam 332.

[0124] Exemplarily, referring to FIG. 6, the current collection component 13 comprises a fixed end 131 arranged on the fixing beam 332. The battery cell assembly 10 further comprises an output bar 14, one end of the output bar 14 is connected to the electrode terminal 112, and the other end of the output bar 14 is arranged on the fixing beam 332. The first current collector 212 and the fixing beam 332 are spaced apart along the first direction X, which reduces the possibility of interference between the first current collector 212 and the fixed end 131 and the output bar 14.

[0125] In some embodiments, referring to FIGS. 7-14, the thermal management component 20 further comprises a plurality of second heat exchange plates 23 and a second manifold 24, each second heat exchange plate 23 extends along a second direction, the plurality of second heat exchange plates 23 are arranged in the first direction, and the plurality of second heat exchange plates 23 are in communication with the second manifold 24.

[0126] In this embodiment, the second heat exchange plate 23 is used to accommodate the heat exchange medium to adjust the temperature of the battery. The second heat exchange plate 23 exchanges heat with the battery monomer, which can effectively manage the heat 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 monomer assembly 10, the heat exchange efficiency can be improved. For battery monomers with high heat dissipation requirements, by adding the first heat exchange plate 21 on the basis of the second heat exchange plate 23, it is not necessary to thicken the second heat exchange plate 23 to provide more heat exchange medium, thereby saving the space of the battery device and improving the energy density of the battery device under the same conditions. For example, referring to FIGS. 10-13, the second heat exchange plate 23 comprises a heat exchange plate body 231, a first plug 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 232. The second manifold 24 is provided with a second plug 242 corresponding to the first plug 232, and the second plug 242 and the first plug 232 are plug-connected.

[0127] For example, the second manifold 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 plug 242 and the first plug 232 are welded by brazing.

[0131] For example, the heat exchange plate body 231 comprises a manifold 2311 and a heat exchange pipe 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 monomer 11, thereby reducing the risk of thermal runaway of the battery monomer. The material of the flexible connecting pipe 233 is flexible to meet the plug-in accuracy of the first plug 232 and the second plug 242, and to maintain the stable connection of the first plug 232 and the second plug 242 when the battery monomer expands.

[0133] For example, one second heat exchange plate 23 is arranged between each adjacent two battery monomers 11 to reduce the space occupied by the second heat exchange plate 23 in the horizontal direction of the box 30.

[0134] In some embodiments, referring to Figs. 14-19, the heat management component 20 further comprises a tee joint 25 and a second pipe 241 connected to the second manifold 24, the first pipe 213 and the second pipe 241 are in communication with the tee joint 25 respectively, and the tee joint 25 is arranged in the frame 33 and used to connect with an external heat exchange source.

[0135] The frame 33 can support and limit the tee joint 25. The three joints of the tee joint 25 are in communication with the external heat exchange source, the first heat exchange plate 21 and the second heat exchange plate 23 respectively, so as to provide heat exchange medium to the first heat exchange plate 21 and the second heat exchange plate 23.

[0136] Exemplarily, two second pipes 241 and two tee joints 25 are arranged respectively, the two second pipes 241 are arranged at two ends of one of the second manifolds 24 along the second direction, and the two tee joints 25 are arranged corresponding to the two second pipes 241 respectively. One of the second pipes 241 is used to collect heat exchange medium into the second manifold 24, and the other second pipe 241 is used to discharge heat exchange medium in the second manifold 24.

[0137] In some embodiments, referring to Figs. 17-19, the second manifold 24 is integrated with the second cover 32.

[0138] In this way, the structural strength of the battery device 100 can be improved. The first heat exchange plate 21 and the first cover 31 are integrated to form a first cover assembly, and the second manifold 24 and the tee joint 25 are integrated with the second cover 32 to form a second cover assembly. When assembling the battery device 100, the first cover assembly is assembled with the frame 33 first, then the battery monomer assembly 10 is installed, and finally the second cover assembly is installed; or, the second cover assembly is assembled with the frame 33 first, then the battery monomer assembly 10 is installed, and finally the first cover assembly is installed. The battery monomer assembly 10 is fixed in the accommodating space formed by the first cover 31, the frame 33 and the second cover 32, which can reduce the required parts during assembly, reduce the material cost and improve the assembly efficiency.

[0139] In some embodiments, referring to FIGS. 1-6, the battery device 100 includes a battery cell assembly 10, a thermal management component 20, and a box 30. The battery cell assembly 10 includes a plurality of battery cells 11 arranged in a plurality of rows, each battery cell 11 including an end cap 110 and an electrode terminal 112 protruding from the end cap 110, the end cap 110 being located at a shoulder portion of the battery cell 11 at a side of the electrode terminal 112 and having a height lower than that of the electrode terminal 112, and the shoulder portions of the plurality of battery cells 11 being arranged to form a shoulder region. The thermal management component 20 includes a first heat exchange plate 21 arranged in the shoulder region. The box 30 includes a first cover 31, a second cover 32, and a frame 33 having openings 33a at two ends, the first cover 31 and the second cover 32 being arranged at the openings 33a of the frame 33 to form a receiving space, the battery cell assembly 10 and the thermal management component 20 being arranged in the receiving space, and the first heat exchange plate 21 facing the first cover 31. The first heat exchange plate 21 is integrated with the first cover 31. The first heat exchange plate 21 and the first cover 31 are fixed by brazing. A heat-conducting pad 40 is arranged between the first heat exchange plate 21 and the shoulder portions 11a of the battery cells 11. The plurality of battery cells 11 are arranged in a plurality of rows along a first direction to form a plurality of battery columns, and the plurality of battery columns are arranged along a second direction to form the battery cell assembly 10. The first heat exchange plate 21 includes a plurality of shoulder heat exchange plates 211 arranged in the shoulder region along the second direction and two first current collectors 212 arranged at two sides of the plurality of shoulder heat exchange plates 211 along the first direction and connected to the plurality of shoulder heat exchange plates 211, and adjacent two shoulder heat exchange plates 211 and the two first current collectors 212 form an empty region, and a projection of the electrode terminal 112 of each battery cell 11 along a third direction is located in the empty region. The first direction, the second direction, and the third direction intersect with each other.

[0140] In this embodiment, the shoulder portions 11a of the end caps 110 are lower than the electrode terminals 112, the first heat exchange plate 21 is arranged in the shoulder portions 11a of the end caps 110, the space of the shoulder portions 11a of the end caps 110 in the box 30 is utilized, the space utilization of the box 30 in the third direction Z is improved, the receiving space in the box 30 occupied by the thermal management of the battery cell assembly 10 is reduced, and the energy density of the battery device 100 is improved. The integrated structure can improve the structural strength of the battery device 100. The brazing method can reduce structural deformation and beautify the appearance. The heat-conducting pad 40 can improve the heat transfer efficiency between the first heat exchange plate 21 and the battery cells 11 and improve the thermal management effect of the battery cell assembly 10. The shoulder heat exchange plates 211 and the first current collectors 212 form heat exchange channels therein, and a heat exchange medium flows in the heat exchange channels to dissipate heat from the battery cell assembly 10.

[0141] In some embodiments, referring to FIGS. 7-19, the battery device 100 includes a battery cell assembly 10, a thermal management component 20, and a box 30. The battery cell assembly 10 includes a plurality of battery cells 11 arranged in a plurality of battery cell rows, each battery cell 11 including an end cap 110 and an electrode terminal 112 protruding from the end cap 110, the end cap 110 being located at a shoulder portion of the battery cell 11 at a side of the electrode terminal 112 and having a height lower than that of the electrode terminal 112, and the shoulder portions of the plurality of battery cells 11 being arranged to form a shoulder region. The thermal management component 20 includes a first heat exchange plate 21 arranged in the shoulder region. The box 30 includes a first cover 31, a second cover 32, and a frame 33 having openings 33a at two ends thereof, the first cover 31 and the second cover 32 being arranged at the openings 33a of the frame 33 to form a receiving space, the battery cell assembly 10 and the thermal management component 20 being arranged in the receiving space, and the first heat exchange plate 21 facing the first cover 31. The first heat exchange plate 21 is integrated with the first cover 31. The first heat exchange plate 21 and the first cover 31 are connected by brazing. A heat-conducting pad 40 is arranged between the first heat exchange plate 21 and the shoulder portions 11a of the battery cells 11. The plurality of battery cells 11 are arranged in a plurality of battery cell rows along a first direction to form the battery cell assembly 10. The first heat exchange plate 21 includes a plurality of shoulder heat exchange plates 211 arranged in the shoulder region along a second direction and two first current collectors 212 arranged at two sides of the plurality of shoulder heat exchange plates 211 along the first direction and connected to the plurality of shoulder heat exchange plates 211, and adjacent two shoulder heat exchange plates 211 and the two first current collectors 212 form an empty region, and a projection of the electrode terminal 112 of each battery cell 11 along a third direction is located in the empty region, and the first direction, the second direction, and the third direction intersect with each other. The thermal management component 20 further includes a plurality of second heat exchange plates 23 and a second current collector 24, each second heat exchange plate 23 extending along the second direction, the plurality of second heat exchange plates 23 being arranged in the first direction and being in communication with the second current collector 24. The second heat exchange plate 23 includes a heat exchange plate body 231, a first connector 232, and a flexible connecting pipe 233, one end of the flexible connecting pipe 233 being connected to an end of the heat exchange plate body 231 along the second direction, and the other end being connected to the first connector 232, the second current collector 24 being provided with a second connector 242 corresponding to the first connector 232, and the second connector 242 and the first connector 232 being connected by plug-in connection. The thermal management component 20 further includes a three-way connector 25 and a second pipe 241, the second pipe 241 being connected to the second current collector 24, the first pipe 213 and the second pipe 241 being in communication with the three-way connector 25, and the three-way connector 25 being arranged in the frame 33 and being used for connecting to an external heat exchange source. The second current collector 24 is integrated with the second cover 32.

[0142] In this embodiment, the battery monomer assembly 10 is heat-exchanged by the first heat-exchange plate 21 and the second heat-exchange plate 23, which can improve the heat-exchange efficiency. For the battery monomer with high heat dissipation requirement, the first heat-exchange plate 21 is additionally arranged on the basis of the second heat-exchange plate 23, and the second heat-exchange plate 23 does not need to be thickened to provide more heat-exchange medium, so that the space of the battery device can be saved and the energy density of the battery device can be improved under the same conditions. The shoulder portion 11a of the end cover 110 is lower than the electrode terminal 112, the first heat-exchange plate 21 is arranged on the shoulder portion 11a of the end cover 110, the space of the shoulder portion 11a of the end cover 110 in the box body 30 can be utilized, the space utilization of the box body 30 in the third direction Z is improved, the accommodation space of the battery monomer assembly 10 in the box body 30 occupied by the heat management is reduced, and the energy density of the battery device 100 is further improved. The integrated manner can improve the structural strength of the battery device 100. The brazing manner is used to fix the first heat-exchange plate 21 and the first cover 31, which can reduce the structural deformation and beautify the appearance. The heat-conducting pad 40 can improve the heat transfer efficiency of the first heat-exchange plate 21 and the battery monomer 11, and improve the heat management effect of the battery monomer assembly 10. The heat-exchange channels are formed in the shoulder heat-exchange plate 211 and the first current collector 212, and the heat-exchange medium flows in the heat-exchange channels to dissipate heat of the battery monomer 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. The three joints of the three-way joint 25 are respectively connected with the external heat-exchange source, the first heat-exchange plate 21 and the second heat-exchange plate 23, so as to provide the heat-exchange medium for the first heat-exchange plate 21 and the second heat-exchange plate 23. The second heat-exchange plate 23 is used to accommodate the heat-exchange medium to adjust the battery temperature. The second heat-exchange plate 23 is heat-exchanged with the battery monomer, which can effectively manage the heat of the battery device 100. The battery monomer assembly 10 is heat-exchanged by the first heat-exchange plate 21 and the second heat-exchange plate 23, which can improve the heat-exchange efficiency. For the battery monomer with high heat dissipation requirement, the first heat-exchange plate 21 is additionally arranged on the basis of the second heat-exchange plate 23, and the second heat-exchange plate 23 does not need to be thickened to provide more heat-exchange medium, so that the space of the battery device can be saved and the energy density of the battery device can be improved under the same conditions. The heat-exchange medium enters the heat-exchange channels of the heat-exchange plate body 231 to heat-exchange with the battery monomer 11, and reduce the risk of thermal runaway of the battery monomer. The material of the flexible connecting pipe 233 is flexible, so as to satisfy the plug-in accuracy of the second plug joint 242 and the flexible connecting pipe 233, and maintain the stable connection of the second plug joint 242 and the flexible connecting pipe 233 when the battery monomer expands. The second current collector 24 and the second cover 32 are integrated, which can improve the structural strength of the battery device 100.

[0143] The battery device 100 is used for storing or providing electric energy.

[0144] The technical solutions described in the embodiments of the present disclosure are applicable to various electric devices using the battery monomer 11, such as a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric toy, an electric tool, a vehicle, a ship, and a spacecraft, such as an aircraft, a rocket, a space shuttle, and a spacecraft.

[0145] Exemplarily, referring to FIG. 20, the electric device is a vehicle 1000, the vehicle 1000 includes a frame and a floor, the floor is connected to the frame, the battery device 100 is arranged below the floor, and the second cover 32 faces the floor.

[0146] In this embodiment, the electrode terminal 112 of the battery monomer 11 faces the ground, and the first heat exchange plate 21 is arranged to face the ground and away from the side of the vehicle floor. In this way, heat generated during heat dissipation of the heat management component 20 can be avoided from accumulating to the floor and wetting devices such as a carpet on the floor.

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

[0148] In this embodiment, the electrode terminal 112 of the battery monomer 11 faces the ground, and the first heat exchange plate 21 is arranged to face the ground and away from the side of the second cover 32. In this way, heat generated during heat dissipation of the heat management component 20 can be avoided from accumulating to the second cover 32 and wetting devices such as a carpet on the second cover 32. The seat beam 200 that is integrally integrated with the second cover 32 can improve the structural strength of the battery device 100, reduce the required parts for assembling on the vehicle, and improve the vehicle assembly efficiency.

[0149] It can be understood that, after the seat beam 200 is integrally integrated with the second cover 32, the side of the second cover 32 that faces the inside of the vehicle is the floor of the vehicle.

[0150] The various embodiments / implementation provided by the present disclosure can be combined with each other without contradiction.

[0151] The above are only preferred embodiments of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A battery device, comprising: a battery cell assembly comprising a plurality of battery cells arranged in a plurality of battery cell rows, each of the battery cells comprising an end cap and an electrode terminal protruding from the end cap, the end cap being located at a side of the electrode terminal to form a shoulder of the battery cell, and a plurality of the shoulders of the battery cells being arranged to form a shoulder region; a thermal management component comprising a first heat exchange plate arranged in the shoulder region; a box comprising a first cover, a second cover, and a frame body having openings at two ends, the first cover and the second cover being arranged at the openings of the frame body to form a receiving space, the battery cell assembly and the thermal management component being arranged in the receiving space, and the first heat exchange plate facing the first cover.

2. The battery device of claim 1, wherein, The first heat exchange plate is integrally formed with the first cover.

3. The battery device of claim 2, wherein, The first heat exchange plate is connected to the first cover by structural adhesive bonding or by brazing.

4. The battery device according to any one of claims 1 to 3, wherein A heat-conducting adhesive or a heat-conducting pad is arranged between the first heat exchange plate and the shoulder of the battery cell.

5. The battery device according to any one of claims 1 to 4, wherein A plurality of the battery cells are arranged in a plurality of battery cell columns along a first direction, and a plurality of the battery cell columns are arranged along a second direction to form the battery cell assembly. The first heat exchange plate comprises a plurality of shoulder heat exchange plates and two first current collectors, the plurality of shoulder heat exchange plates being arranged in the corresponding shoulder regions along the second direction, the two first current collectors being arranged on both sides of the plurality of shoulder heat exchange plates along the first direction and connected to the plurality of shoulder heat exchange plates, and two adjacent shoulder heat exchange plates and the two first current collectors forming an empty region, a projection of the electrode terminal of each battery cell along a third direction being located in the empty region, the first direction, the second direction, and the third direction intersecting with each other.

6. The battery device of claim 5, wherein, The battery cell assembly further comprises a current collection component, the electrode terminal comprising a positive electrode column and a negative electrode column, and the current collection component being arranged between the positive electrode column and the negative electrode column of the battery cell and located in the empty region. The current collection component extends along the first direction.

7. The battery device according to claim 5 or 6, wherein The thermal management component further comprises a first connector and a two-way connector, the first connector being connected to one of the first current collectors, and the two-way connector being connected to the first connector and penetrating the frame body to be connected to an external heat exchange source.

8. The battery device of claim 7, wherein, The thermal management component further comprises a plurality of second heat exchange plates and a second current collector, each of the second heat exchange plates extending along the second direction, the plurality of second heat exchange plates being arranged along the first direction, and the plurality of second heat exchange plates being in communication with the second current collector.

9. The battery device of claim 8, wherein, The second heat exchange plate comprises a heat exchange plate body, a first plug connector, and a flexible connecting pipe, one end of the flexible connecting pipe being connected to an end of the heat exchange plate body along the second direction, and the other end being connected to the first plug connector, the second current collector being provided with a second plug connector corresponding to the first plug connector, and the second plug connector and the first plug connector being plug-connected.

10. The battery device according to claim 8 or 9, wherein The heat management component further comprises a tee joint and a second connecting pipe, the second connecting pipe is connected to the second current collecting piece, the first connecting pipe and the second connecting pipe are respectively communicated with the tee joint, and the tee joint is arranged in the frame body and used for being connected with an external heat exchange source.

11. The battery device according to any one of claims 8 to 10, wherein The second current collecting piece is integrally integrated with the second cover body. 12.A power consuming device, comprising the battery device according to any one of claims 1 to 11, the battery device being used for storing or providing electric energy.

13. The powered device of claim 12, wherein, The power consuming device is a vehicle, the vehicle comprises a vehicle frame and a floor, the floor is connected with the vehicle frame, the battery device is arranged below the floor, and the second cover body faces the floor.

14. The powered device of claim 12 or 13, wherein, The power consuming device is a vehicle, the vehicle comprises a seat beam, and the seat beam is integrally integrated with the second cover body.

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