Battery and electric device

Abstract

Embodiments of the present application provide a battery and an electric device. The battery comprises a frame body, a battery cell, a first beam, and a heat exchange plate. The frame body defines an accommodating space. A first opening is formed in one end of the accommodating space. The battery cell is arranged in the accommodating space. The first beam is arranged in the accommodating space, two ends of the first beam are connected to the frame body, and the first beam is used for limiting expansion of the battery cell. The heat exchange plate covers the first opening and is used for exchanging heat with the battery cell, and the heat exchange plate is fixedly connected to the frame body and the first beam. When the battery is subjected to an external impact, the frame body and the first beam can restrain the heat exchange plate, so as to reduce the relative movement between the heat exchange plate and the battery cell, and improve the uniformity of heat exchange. In addition, the first beam can disperse the stress at the joint of the heat exchange plate and the frame body, reduce the risk of failure of the connection between the heat exchange plate and the frame body, improve the sealing performance of the battery, and improve the reliability of the battery.

Description

Batteries and electrical devices Technical Field

[0001] The present application relates to the technical field of batteries, and more particularly, to a battery and an electrical device. Background Art

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] In the development of battery technology, how to improve battery reliability is a research direction in battery technology.

[0004] Summary of the Invention

[0005] The present application provides a battery and an electrical device, which can improve reliability.

[0006] In a first aspect, embodiments of the present application provide a battery comprising a frame, a battery cell, a first beam, and a heat exchange plate. The frame encloses a storage space. One end of the storage space has a first opening. The battery cell is disposed in the storage space. A first beam is disposed in the storage space, with both ends of the first beam connected to the frame. The first beam is used to limit expansion of the battery cell. The heat exchange plate covers the first opening and is used to exchange heat with the battery cell. The heat exchange plate is fixedly connected to the frame and the first beam.

[0007] When the battery is subjected to external impact, the frame and first beams restrain the heat exchange plate, minimizing relative movement between the plate and the battery cells and improving heat exchange uniformity. Furthermore, the first beams disperse the forces at the connection between the plate and the frame, reducing the risk of failure and improving the battery's sealing and reliability.

[0008] In some embodiments, the heat exchange plate includes a flow channel area and a non-flow channel area, wherein the flow channel area is provided with a flow channel for the heat exchange medium to flow, and a portion of the non-flow channel area is fixed to the frame and the first beam.

[0009] No flow channel is formed in the non-flow channel area. Part of the non-flow channel area is fixed to the frame and the first beam. When the battery is subjected to external impact, the force transmitted to the flow channel area can be reduced, the deformation of the flow channel can be reduced, the uniformity of heat exchange can be improved, and the risk of damage to the flow channel area and leakage of the heat exchange medium can be reduced.

[0010] In some embodiments, the battery further includes a protective plate, which is disposed on a side of the heat exchange plate away from the battery cells and connected to the heat exchange plate.

[0011] The protective plate can protect the heat exchange plate, reduce the risk of external impurities directly impacting the heat exchange plate, reduce the deformation of the heat exchange plate, improve the uniformity of heat exchange, reduce the risk of heat exchange medium leakage, and improve the reliability of the battery.

[0012] In some embodiments, a first recess is provided on the side of the protective plate facing the heat exchange plate. The heat exchange plate includes a flow channel region and a non-flow channel region. The flow channel region includes flow channels for the heat exchange medium. A projection of the flow channel region along the thickness of the heat exchange plate lies within the projection of the first recess. The protective plate includes an edge portion surrounding the first recess, the edge portion abutting against the non-flow channel region, and the edge portion, the non-flow channel region, and the frame are fixedly connected.

[0013] The provision of the first recess avoids the flow channel area, increasing the distance between the bottom surface of the first recess and the flow channel area, and reducing the risk of the protective plate directly pressing against the flow channel area. The edge portion is located on the periphery of the protective plate and secured to the non-flow channel area and the frame, thereby improving the stability of the protective plate. The edge portion abuts against the non-flow channel area, further sealing the first recess.

[0014] In some embodiments, the bottom surface of the first recess is spaced apart from the flow channel region in the thickness direction. When the protective plate is compressed, the protective plate may deform. Spacing the flow channel region from the bottom surface of the first recess provides space for deformation of the protective plate, thereby reducing the risk of the protective plate directly squeezing the flow channel region.

[0015] In some embodiments, the protective plate further includes a first protrusion protruding from the bottom surface of the first recess, the first protrusion abuts against the non-flow channel area, and the first protrusion, the non-flow channel area and the first beam are fixedly connected.

[0016] The first convex portion can compensate for the gap between the bottom surface of the first concave portion and the non-flow channel area, thereby being able to offset the non-flow channel area, thereby achieving a fixed connection between the first convex portion, the non-flow channel area and the first beam, and improving the strength of the battery.

[0017] In some embodiments, the protective plate further includes a second protrusion, the second protrusion protruding from the surface of the edge portion facing away from the non-flow channel area, and the first recess is formed at a position on the protective plate corresponding to the second protrusion. The first protrusion is connected to the second protrusion. The provision of the second protrusion increases the depth of the first recess and improves the strength of the protective plate.

[0018] In some embodiments, the protection plate is further provided with a second recessed portion, which is recessed from the surface of the protection plate facing away from the heat exchange plate, and is formed at a position of the protection plate corresponding to the first protrusion.

[0019] By providing the second recessed portion, the molding process of the protective plate can be simplified, the weight of the protective plate can be reduced, and the difficulty of connecting the first protruding portion with the non-flow channel area can be reduced.

[0020] In some embodiments, the battery further includes a power distribution box comprising a housing and electrical components. The housing is located on the side of the protective plate facing away from the heat exchange plate. The housing and the protective plate define a receiving cavity. The electrical components are disposed in the receiving cavity and electrically connected to the battery cells. The housing has an end surface on the end facing the protective plate, which abuts the protective plate. In the thickness direction, the projection of the end surface does not overlap with the projection of the second recess.

[0021] The power distribution box is equipped with a protective plate on the side facing away from the heat exchange plate. In the event of thermal runaway of the battery cells, the protective plate and the heat exchange plate can protect the power distribution box, reducing the risk of high-temperature substances released by the battery cells damaging electrical components. The heat exchange plate can also exchange heat with the power distribution box through the protective plate, thereby regulating the temperature of the power distribution box. Placing the power distribution box outside the frame can also improve the utilization of the internal space of the battery. The end face of the housing is arranged away from the second recess to reduce the risk of the second recess connecting the space inside and outside the housing, thereby improving the sealing and reliability of the power distribution box.

[0022] In some embodiments, the first beam extends along a first direction; the protective plate is provided with a plurality of second recesses spaced apart along the first direction. A portion of the end surface is secured to a portion of the protective plate located between two adjacent second recesses. By securing the housing to the portion between the second recesses, the second recesses are avoided from interfering with the end surface of the housing and space utilization is improved.

[0023] In some embodiments, the protective plate further includes a third protrusion protruding from the bottom surface of the first recess, the third protrusion abutting against the non-flow channel region, and the third protrusion, the non-flow channel region, and the frame are fixedly connected. The third protrusion can compensate for the gap between the bottom surface of the first recess and the non-flow channel region, thereby abutting against the non-flow channel region, thereby achieving a fixed connection between the third protrusion, the non-flow channel region, and the frame, thereby improving the strength of the battery.

[0024] In some embodiments, the protective plate includes a plurality of third protrusions spaced apart along a first direction. In the first direction, a portion of the flow channel region is located between two adjacent third protrusions. This embodiment of the present application utilizes the space between the third protrusions, thereby improving space utilization while avoiding the third protrusions from the flow channel region.

[0025] In some embodiments, the frame includes a second beam and a third beam disposed opposite each other along a second direction. The first beam, the second beam, and the third beam all extend along the first direction, with the first direction being perpendicular to the second direction. In the second direction, the battery cell is positioned between the second beam and the first beam. The third protrusion, the non-flow channel region, and the second beam are fixedly connected.

[0026] The first and second beams are used to restrain the battery cells from both sides. The third protrusion, the non-flow channel area, and the second beam are fixedly connected to improve the structural strength of the battery and reduce the risk of failure in the connection between the heat exchange plate and the frame.

[0027] In some embodiments, in the second direction, the minimum dimension of the second beam is greater than the minimum dimension of the third beam. The second beam has a larger size and strength, which can not only withstand the expansion force of the battery cell, but also be fixedly connected to the third protrusion and the edge portion, thereby improving the overall structural strength of the battery.

[0028] In some embodiments, the battery further includes a first connector and a second connector, the first connector fixes the protective plate, the heat exchange plate and the frame, and the second connector fixes the protective plate, the heat exchange plate and the first beam.

[0029] The first connector fixes the protective plate and the heat exchange plate to the frame at the same time, thereby improving the stability of the protective plate and the heat exchange plate. The second connector fixes the protective plate and the heat exchange plate to the first beam at the same time, thereby improving the stability of the protective plate and the heat exchange plate.

[0030] In some embodiments, the battery further includes a reinforcing beam, which is disposed on the side of the protective plate facing away from the heat exchange plate and is fixed to the protective plate. The reinforcing beam can enhance the overall strength of the battery, reduce deformation of the protective plate when subjected to external impact, reduce the risk of the protective plate squeezing the heat exchange plate, and thus improve the reliability of the battery.

[0031] In some embodiments, the reinforcement beam is used to mount a vehicle seat. The embodiments of the present application can eliminate the need for a seat mounting beam in the vehicle, thereby saving vehicle components, improving vehicle integration, and simplifying the vehicle assembly process.

[0032] In some embodiments, the heat exchange plate includes a flow channel region and a non-flow channel region. The flow channel region is provided with flow channels for the heat exchange medium. At least one of the flow channel region and the non-flow channel region is bonded to the protective plate. Bonding the flow channel region or the non-flow channel region to the protective plate can enhance the connection strength between the heat exchange plate and the protective plate, thereby improving the stability of the battery.

[0033] In some embodiments, the first opening is located at the vertical upper end of the accommodating space, and the heat exchange plate is located on the upper side of the frame. This placement of the heat exchange plate on the upper side of the frame reduces the impact force on the lower side of the battery when it is subjected to an external impact, thereby minimizing deformation of the heat exchange plate, improving heat exchange uniformity, reducing the risk of heat exchange medium leakage, and enhancing battery reliability.

[0034] In some embodiments, the battery cells are fixed to the heat exchange plate. The heat exchange plate can simultaneously support the battery cells and exchange heat with them. Fixing the battery cells to the heat exchange plate can also reduce relative movement between the battery cells and the heat exchange plate when the battery is subjected to external impact, thereby improving the stability of the heat exchange between the heat exchange plate and the battery cells.

[0035] In some embodiments, the other end of the storage space has a second opening. The battery further includes a bottom plate that covers the second opening and is connected to the frame. The bottom plate and the heat exchange plate can seal the storage space from both sides, thereby improving the sealing performance of the battery.

[0036] In a second aspect, an embodiment of the present application further provides an electrical device, which includes a battery provided by any embodiment of the first aspect, and the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0038] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0039] FIG2 is a schematic diagram of an explosion of a battery provided in some embodiments of the present application;

[0040] FIG3 is a schematic diagram of an explosion of the battery cell shown in FIG2 ;

[0041] FIG4 is an enlarged schematic diagram of FIG2 at the circle A;

[0042] FIG5 is a schematic structural diagram of some components of the battery shown in FIG2 ;

[0043] FIG6 is an enlarged schematic diagram of FIG5 at the circle C;

[0044] FIG7 is a schematic partial cross-sectional view taken along the EE direction of FIG6;

[0045] FIG8 is a schematic top view of a battery provided in some embodiments of the present application;

[0046] FIG9 is a schematic cross-sectional view taken along the FF direction of FIG8 ;

[0047] FIG10 is an enlarged schematic diagram of the circle frame in FIG9;

[0048] FIG11 is an enlarged schematic diagram of FIG5 at the circle D;

[0049] FIG12 is a bottom view of a protective plate of a battery provided in some embodiments of the present application;

[0050] FIG13 is a schematic top view of a protective plate, a heat exchange plate, and a housing of a battery provided in some embodiments of the present application;

[0051] FIG14 is a partial cross-sectional schematic diagram taken along the GG direction of FIG13;

[0052] FIG15 is an enlarged schematic diagram of the box in FIG14;

[0053] FIG16 is an enlarged schematic diagram of the circle frame in FIG8;

[0054] FIG17 is a partial cross-sectional schematic diagram of FIG13 taken along the HH direction;

[0055] FIG18 is an enlarged schematic diagram of the circle frame of FIG17;

[0056] FIG19 is an enlarged schematic diagram of FIG2 at the circle B;

[0057] FIG20 is a schematic diagram of an electrical device provided in some other embodiments of the present application.

[0058] Description of the accompanying drawings: 1. Vehicle; 2. Battery; 3. Controller; 4. Motor; 5. Seat; 10. Frame; 10a. Accommodation space; 10b. First opening; 10c. Second opening; 11. Second beam; 12. Third beam; 13. Fourth beam; 20. Battery cell; 21. Housing; 211. Battery housing; 2111. Housing bottom wall; 212. End cap; 22. Electrode assembly; 23. Electrode terminal; 24. Pressure relief mechanism; 30. Heat exchange plate; 30a. Flow channel region; 30b. Non-flow channel region; 31. Flow channel; 32. First plate; 33. Second plate; 331. Fourth recess; 332. Fourth protrusion; 40. First beam; 50. Protective plate; 51. First recess; 511. Bottom surface; 52. Edge portion; 53. First protrusion; 531. Top surface of the first protrusion; 54. Second protrusion; 541. Top surface of the second protrusion; 55. Second recess; 56. Third protrusion; 57. Third recess; 60. Reinforcing beam; 70. Distribution box; 71. Housing; 711. Housing opening; 712. End surface; 72. Electrical component; 73. Cover plate; 80. Bottom plate; 90. First connecting member; 91. Second connecting member; X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0059] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0060] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0061] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0062] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0063] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0064] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0065] In the embodiments of this application, "parallel" includes not only absolute parallelism but also approximately parallelism as commonly understood in engineering practice. Similarly, "perpendicular" also includes not only absolute perpendicularity but also approximately perpendicularity as commonly understood in engineering practice. For example, if the angle between two directions is 85°-90°, they are considered perpendicular; if the angle between two directions is 0°-5°, they are considered parallel.

[0066] The term "plurality" used in this application refers to two or more (including two).

[0067] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0068] The battery cell may be a secondary battery cell. A secondary battery cell refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0069] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0070] In some embodiments, the battery further includes a box in which the battery cells are housed. The box can protect the battery cells from the outside, thereby reducing the risk of battery cell failure.

[0071] Battery cells generate heat during the charging and discharging process. When multiple battery cells are used in groups, this heat can accumulate. If this heat is not effectively removed, it will cause the battery cells to heat up and accelerate aging. Furthermore, excessive temperatures can easily lead to thermal runaway, posing a safety hazard. When battery cells are exposed to low temperatures, their service life is shortened and their discharge capacity is weakened.

[0072] In related technologies, independent heat exchange plates are typically installed inside batteries to exchange heat with the battery cells to maintain the battery cell's operating temperature within an appropriate range. Specifically, the heat exchange plates typically have flow channels within them. When an external heat exchange medium flows through these channels, it exchanges heat with the battery cells through the plates to regulate the battery cell's temperature.

[0073] However, independent heat exchange plates take up space, thereby reducing the energy density of the battery.

[0074] In some embodiments, the battery integrates the box body and the heat exchange plate, and uses the heat exchange plate as the box wall of the box body. This can save components, simplify the structure of the battery, and improve energy density.

[0075] Because different electrical devices have different usage scenarios, batteries must be adaptable to a variety of harsh usage scenarios when used in these devices. The heat exchange plate is typically fixed only to the chassis frame. When the battery vibrates, the chassis frame insufficiently restrains the heat exchange plate, causing it to significantly offset relative to the battery cells, resulting in uneven heat transfer. Severe battery vibrations can even lead to failure of the connection between the heat exchange plate and chassis, impacting battery reliability.

[0076] In view of this, an embodiment of the present application provides a technical solution, which fixes the heat exchange plate to the frame of the box and the beam inside the frame at the same time, so as to improve the stability of the heat exchange plate, reduce the relative movement between the heat exchange plate and the battery cell, improve the uniformity of heat exchange, and reduce the risk of failure of the connection between the heat exchange plate and the frame, thereby improving the reliability of the battery.

[0077] The battery described in the embodiments of the present application is suitable for use in electrical devices that use the battery.

[0078] Electrical devices may include vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may include fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles may include pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0079] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device.

[0080] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application.

[0081] As shown in FIG1 , a battery 2 is provided inside the vehicle 1. The battery 2 may be provided at the bottom, head, or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1. For example, the battery 2 may serve as an operating power source for the vehicle 1.

[0082] The vehicle 1 may further include a controller 3 and a motor 4 . The controller 3 is used to control the battery 2 to supply power to the motor 4 , for example, to meet the power requirements of the vehicle 1 during startup, navigation, and driving.

[0083] In some embodiments of the present application, the battery 2 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0084] Figure 2 is an exploded schematic diagram of a battery provided in some embodiments of the present application; Figure 3 is an exploded schematic diagram of the battery cell shown in Figure 2; Figure 4 is an enlarged schematic diagram of circle A in Figure 2; and Figure 5 is a structural schematic diagram of some components of the battery shown in Figure 2.

[0085] 2 to 5 , the battery 2 according to the embodiment of the present application includes a frame 10 and a battery cell 20. The frame 10 encloses a receiving space 10a, and the battery cell 20 is disposed in the receiving space 10a.

[0086] In the battery 2 , there can be one or more battery cells 20 . If there are multiple battery cells 20 , the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are connected in both series and in parallel.

[0087] Multiple battery cells 20 can be directly connected in series, in parallel, or mixed together, and then the whole formed by the multiple battery cells 20 can be accommodated in the accommodation space 10a; of course, multiple battery cells 20 can also be first connected in series, in parallel, or mixed together to form a battery module, and then multiple battery modules can be connected in series, in parallel, or mixed together to form a whole and accommodated in the accommodation space 10a.

[0088] As an example, the battery cell 20 may be a prismatic battery cell, a soft-pack battery cell, or a battery cell of another shape. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells, and polygonal battery cells. Polygonal battery cells are, for example, hexagonal battery cells.

[0089] The frame 10 may be a rectangular frame 10 , a circular frame 10 , a polygonal frame 10 , an elliptical frame 10 or a frame 10 in other shapes.

[0090] The frame 10 may be made of steel, aluminum, aluminum alloy or other materials.

[0091] The frame 10 can protect the battery cells 20 from the periphery, reducing the risk of the battery cells 20 being impacted by external impurities.

[0092] In some embodiments, the battery cell 20 includes a housing 21 and an electrode assembly 22 , and the electrode assembly 22 is accommodated in the housing 21 .

[0093] The electrode assembly 22 is a component where electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 22 may be contained within the housing 21.

[0094] As an example, the electrode assembly 22 includes a positive electrode sheet and a negative electrode sheet. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 22, while the portions of the positive and negative electrode sheets not containing active material each constitute a tab. The tabs may include a positive tab and a negative tab. The positive and negative tabs may be located together at one end of the main body or separately at opposite ends of the main body.

[0095] During the charge and discharge process of the battery cell 20 , the positive electrode active material and the negative electrode active material react with the electrolyte to generate current, which is then conducted through the tabs.

[0096] The housing 21 is hollow, forming an inner cavity for accommodating the electrode assembly 22 and the electrolyte. The shape of the housing 21 can be determined based on the specific shape of the electrode assembly 22. For example, if the electrode assembly 22 is a rectangular parallelepiped structure, a rectangular housing can be used; if the electrode assembly 22 is a cylindrical structure, a cylindrical housing can be used.

[0097] As an example, the housing 21 includes a battery housing 211 and an end cover 212. The battery housing 211 has an opening, and the end cover 212 is used to cover the opening. The end cover 212 is connected to the battery housing 211 by welding, bonding, clamping or other means.

[0098] The battery housing 211 may be open at one end or at both ends. In some examples, the battery housing 211 may be open at one end, with one end cap 212 provided and covering the battery housing 211. In other examples, the battery housing 211 may be open at both ends, with two end caps 212 provided, each covering the two openings of the battery housing 211.

[0099] In some embodiments, the battery cell 20 further includes an electrode terminal 23 . The electrode terminal 23 can be used to electrically connect to the electrode assembly 22 to output or input electrical energy of the battery cell 20 .

[0100] In some embodiments, the electrode terminal 23 is disposed on the battery housing 211 or the end cover 212 .

[0101] In some embodiments, there are two electrode terminals 23, each electrically connected to a tab on the positive electrode sheet and a tab on the negative electrode sheet. The current generated by the electrode assembly 22 can be transmitted externally through the electrode terminals 23, and an external power source can also charge the electrode assembly 22 through the electrode terminals 23.

[0102] In some embodiments, the battery cell 20 further includes a pressure relief mechanism 24 .

[0103] When a short circuit or overcharge occurs, thermal runaway may occur inside the battery cell 20 , causing a sudden increase in the internal pressure of the housing 21 , putting the battery cell 20 at risk of bursting.

[0104] When the internal pressure or temperature of the housing 21 reaches a threshold, the pressure relief mechanism 24 can connect the internal space of the housing 21 with the external space, thereby releasing the internal pressure of the battery cell 20 and reducing the risk of the battery cell 20 bursting.

[0105] The pressure relief mechanism 24 is an element or component that activates to release the internal pressure or temperature of the battery cell 20 when the internal pressure or temperature reaches a predetermined threshold. This threshold varies depending on the design requirements. The threshold may depend on the materials of one or more of the positive electrode sheet, negative electrode sheet, electrolyte, and separator in the battery cell 20. The pressure relief mechanism 24 can take the form of an explosion-proof valve, a gas valve, a pressure relief valve, or a safety valve, and can specifically employ pressure-sensitive or temperature-sensitive elements or structures.

[0106] In some embodiments, the pressure relief mechanism 24 may be disposed on the battery housing 211 or on the end cover 212 .

[0107] In some embodiments, one end of the accommodation space 10a has a first opening 10b . The battery 2 further includes a heat exchange plate 30 , which is fixed to the frame 10 and covers the first opening 10b . The heat exchange plate 30 is used to exchange heat with the battery cell 20 .

[0108] The heat exchange plate 30 may be an integrally formed component, or may be formed by connecting a plurality of independently formed components.

[0109] As an example, the first opening 10b may be located at the upper end of the accommodation space 10a, or at the lower end of the accommodation space 10a, or at the side end of the accommodation space 10a.

[0110] The battery cell 20 may be fixed to the heat exchange plate 30 , may be fixed to the frame 10 , or may be fixed to other components of the battery 2 .

[0111] As an example, the electrode terminals 23 of the battery cells 20 may face the heat exchange plate 30 , may face away from the heat exchange plate 30 , or may face the frame 10 .

[0112] As an example, the pressure relief mechanism 24 of the battery cell 20 may face the heat exchange plate 30 , may face away from the heat exchange plate 30 , or may face the frame 10 .

[0113] The heat exchange plate 30 can be connected to the frame 10 by bonding, fastener connection, welding, clamping or other methods.

[0114] The heat exchange plate 30 can simultaneously seal the first opening 10 b and exchange heat with the battery cell 20 , which can save components, simplify the structure of the battery 2 , improve the integration of the battery 2 , and enhance the energy density of the battery 2 .

[0115] In some embodiments, the battery 2 further includes a first beam 40 , which is disposed in the receiving space 10 a and has both ends connected to the frame 10 . The first beam 40 can improve the overall strength of the battery 2 .

[0116] In some embodiments, the first beam 40 is used to limit the expansion of the battery cell 20. As an example, the first beam 40 may also be referred to as an expansion beam.

[0117] The battery cells 20 expand during charging and discharging, and the first beams 40 limit this expansion, reducing deformation of the battery cells 20 and improving the charge and discharge performance of the battery cells 20. Furthermore, the first beams 40 withstand the expansion force of the battery cells 20, thereby reducing the stress on the frame 10, minimizing deformation of the frame 10 and improving the reliability of the battery 2.

[0118] In some embodiments, the heat exchange plate 30 is fixedly connected to the frame 10 and the first beam 40. When the battery 2 is subjected to external impact, the frame 10 and the first beam 40 can restrain the heat exchange plate 30, reducing relative movement between the heat exchange plate 30 and the battery cells 20 and improving heat exchange uniformity. Furthermore, the first beam 40 can disperse the force at the connection between the heat exchange plate 30 and the frame 10, reducing the risk of failure of the connection between the heat exchange plate 30 and the frame 10, improving the sealing of the battery 2, and enhancing the reliability of the battery 2.

[0119] In some embodiments, a flow channel for a heat exchange medium to flow is provided inside the heat exchange plate 30. As an example, the heat exchange medium may be a liquid or a gas, such as water.

[0120] In some embodiments, the battery 2 further includes a protective plate 50 , which is disposed on a side of the heat exchange plate 30 away from the battery cells 20 .

[0121] The protection plate 50 may be a plate of uniform thickness or a plate of unequal thickness.

[0122] The material of the protection plate 50 can be metal, plastic, metal-plastic composite material or other materials. Optionally, the metal can be aluminum, aluminum alloy, stainless steel, nickel-plated steel or other materials.

[0123] The protective plate 50 may be an integrally formed plate or may be formed by splicing a plurality of plates.

[0124] The protective plate 50 can protect the heat exchange plate 30, reduce the risk of external impurities directly impacting the heat exchange plate 30, reduce deformation of the heat exchange plate 30, improve the uniformity of heat exchange, reduce the risk of heat exchange medium leakage, and improve the reliability of the battery 2.

[0125] In some embodiments, the protection plate 50 is connected to the heat exchange plate 30. For example, the protection plate 50 can be connected to the heat exchange plate 30 by bonding, fastener connection, welding, clamping or other methods.

[0126] In some embodiments, the protective plate 50 is bonded to the heat exchange plate 30. Bonding the protective plate 50 to the heat exchange plate 30 can improve the connection strength between the heat exchange plate 30 and the protective plate 50 and enhance the stability of the protective plate 50.

[0127] In some embodiments, the protection plate 50 is bonded to the heat exchange plate 30 by structural adhesive.

[0128] In some embodiments, the protection plate 50 and the heat exchange plate 30 are further connected by other components, such as fasteners.

[0129] In some embodiments, the thickness of the protective plate 50 may be 0.1 mm-50 mm. Optionally, the thickness of the protective plate 50 is 0.4 mm-5 mm.

[0130] As an example, the thickness of the protective plate 50 may be 0.1 mm, 0.2 mm, 0.4 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, 8 mm, 10 mm, 15 mm, 20 mm, 35 mm, 40 mm, 45 mm, or 50 mm.

[0131] In this embodiment of the present application, the thickness of the protective plate 50 is limited to greater than or equal to 0.1 mm to increase the structural strength of the protective plate 50 and reduce deformation of the protective plate 50 when stepped on. In this embodiment of the present application, the thickness of the protective plate 50 is limited to less than or equal to 50 mm to reduce the weight and volume of the protective plate 50 and reduce the loss of energy density of the battery 2.

[0132] In some embodiments, the battery 2 further includes a reinforcing beam 60 . The reinforcing beam 60 is disposed on a side of the protective plate 50 facing away from the heat exchange plate 30 and is fixed to the protective plate 50 .

[0133] The reinforcement beam 60 and the protection plate 50 can be independently formed components, and the two can be fixedly connected by welding, bonding, fastener connection or other methods. Alternatively, the reinforcement beam 60 and the protection plate 50 can also be integrally formed.

[0134] There may be one or more reinforcing beams 60 .

[0135] The reinforcing beam 60 can improve the overall strength of the battery 2 , reduce deformation of the protective plate 50 when the protective plate 50 is subjected to external impact, reduce the risk of the protective plate 50 squeezing the heat exchange plate 30 , and improve the reliability of the battery 2 .

[0136] In some embodiments, the reinforcement beam 60 is used to connect to external components. The reinforcement beam 60 of the battery 2 can provide mounting points for some components of the electrical device, thereby reducing parts, improving integration, and simplifying the assembly process.

[0137] In some embodiments, the reinforcement beam 60 is used to mount the vehicle seat 5. The embodiment of the present application can eliminate the seat mounting beam in the vehicle, thereby saving vehicle parts, improving the integration of the vehicle, and simplifying the vehicle assembly process.

[0138] In some embodiments, the reinforcement beam 60 is formed by bending a metal plate.

[0139] In some embodiments, the battery 2 includes a plurality of reinforcement beams 60 .

[0140] In some embodiments, the battery 2 also includes a distribution box 70, which includes a shell 71 and an electrical component 72. The shell 71 is located on the side of the protective plate 50 away from the heat exchange plate 30. The shell 71 and the protective plate 50 define a accommodating cavity. The electrical component 72 is arranged in the accommodating cavity and is electrically connected to the battery cell 20.

[0141] The power distribution box 70 can control the battery 2. As an example, the power distribution box 70 plays a role in protecting the battery 2 and distributing power during the charging and discharging process of the battery 2.

[0142] The power distribution box 70 is provided with a protective plate 50 on the side facing away from the heat exchange plate 30. In the event of thermal runaway of the battery cells 20, the protective plate 50 and the heat exchange plate 30 protect the power distribution box 70, reducing the risk of damage to the electrical components 72 from high-temperature substances released from the battery cells 20. The heat exchange plate 30 also exchanges heat with the power distribution box 70 through the protective plate 50, thereby regulating the temperature of the power distribution box 70. Placing the power distribution box 70 outside the housing 10 also improves the utilization of the internal space of the battery 2.

[0143] Generally, the voltage is high. Directly connecting electrical appliances (such as motor controllers, air conditioning systems, and charging systems) to the battery would create a cluttered wiring harness. Therefore, a power distribution box is required to distribute the high voltage to the battery. The power distribution box utilizes a centralized power distribution solution, offering a compact design, convenient wiring layout, and quick and easy maintenance. Depending on the system architecture requirements of different customers, the power distribution box may also integrate some of the battery management system's intelligent control and management units, further simplifying the complexity of power distribution for the entire electrical device.

[0144] In some embodiments, the electrical device 72 includes one or more of a fuse, a relay, a resistor, a current sensor, and a battery management component to facilitate control of the battery 2 .

[0145] A fuse is an electrical device that generates heat to melt its fuse, disconnecting the circuit when the current exceeds a specified value. A relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (stimulus quantity) reaches a specified requirement. A current sensor is a detection device that can sense the measured current and convert this information into an electrical signal or other required information output according to a specific rule to meet certain standards, thereby meeting the requirements of information transmission, processing, storage, display, recording, and control. The battery management unit is designed to intelligently manage and maintain each battery cell, reduce the risk of overcharging and overdischarging, extend the battery life, and monitor the battery status.

[0146] Illustratively, the battery management assembly includes a circuit board.

[0147] In some embodiments, the power distribution box 70 is located directly below or behind the rear seat of the vehicle. The power distribution box 70 is arranged below or behind the rear seat of the vehicle, which can greatly utilize the space of the entire vehicle.

[0148] In some embodiments, the housing 71 of the distribution box 70 is fixed to the protective plate 50 by welding.

[0149] In some embodiments, the housing 71 has a housing opening 711 at one end away from the protective plate 50 ; the distribution box 70 further includes a cover 73 , which is connected to the housing 71 and covers the housing opening 711 .

[0150] The cover plate 73 can seal the housing 71 , preventing external impurities from entering the housing 71 , and reducing the risk of the electrical components 72 being corroded or damaged by external impurities.

[0151] In some embodiments, the cover plate 73 is detachably connected to the housing 71. When the electrical device 72 fails, the cover plate 73 can be removed to facilitate maintenance of the electrical device 72.

[0152] In some embodiments, the first opening 10 b is disposed at the upper end of the accommodating space 10 a in the vertical direction, and the heat exchange plate 30 is located on the upper side of the frame 10 .

[0153] As an example, when the battery 2 is installed in an electrical device, the heat exchange plate 30 is located vertically above the storage space 10a. During the production and transportation of the battery 2, the heat exchange plate 30 is not required to be located vertically above the storage space 10a.

[0154] The heat exchange plate 30 is arranged on the upper side of the frame 10. When the lower side of the battery 2 is subjected to an external impact, the impact force on the heat exchange plate 30 is small, thereby reducing the deformation of the heat exchange plate 30, improving the uniformity of heat exchange, reducing the risk of heat exchange medium leakage, and improving the reliability of the battery 2.

[0155] In some embodiments, the battery cells 20 are fixed to the heat exchange plate 30. The heat exchange plate 30 can simultaneously support the battery cells 20 and exchange heat with the battery cells 20. Fixing the battery cells 20 to the heat exchange plate 30 can also reduce the relative movement between the battery cells 20 and the heat exchange plate 30 when the battery 2 is subjected to external impact, thereby improving the stability of the heat exchange between the heat exchange plate 30 and the battery cells 20.

[0156] In some embodiments, the battery cells 20 are bonded to the heat exchange plate 30. The bonding process is simple and has high stability.

[0157] In some embodiments, the battery cells 20 are bonded to the heat exchange plate 30 using thermally conductive adhesive. Thermally conductive adhesive has low thermal resistance, and using thermally conductive adhesive to bond the battery cells 20 and the heat exchange plate 30 can improve the heat exchange efficiency between the heat exchange plate 30 and the battery cells 20.

[0158] In some embodiments, an electrode terminal 23 is provided on a side of the battery cell 20 away from the heat exchange plate 30 .

[0159] The electrode terminal 23 is usually arranged to protrude. Setting the electrode terminal 23 on the side of the battery cell 20 away from the heat exchange plate 30 can reduce the risk of interference between the busbar component connected to the electrode terminal 23 and the heat exchange plate 30, increase the heat exchange area between the battery cell 20 and the heat exchange plate 30, and improve the heat exchange efficiency.

[0160] In some embodiments, the two electrode terminals 23 are both disposed on a side of the battery cell 20 away from the heat exchange plate 30 .

[0161] In some embodiments, the battery housing 211 includes a bottom wall 2111 opposite to the end cover 212 , and the bottom wall 2111 is bonded to the heat exchange plate 30 . Two electrode terminals 23 are mounted on the end cover 212 .

[0162] In some embodiments, a pressure relief mechanism 24 is provided on the side of the battery cell 20 away from the heat exchange plate 30. In the event of thermal runaway of the battery cell 20, the high-temperature, high-pressure material released through the pressure relief mechanism 24 will not directly impact the heat exchange plate 30, thereby reducing the risk of melting the heat exchange plate 30 and minimizing leakage of the heat exchange medium.

[0163] In some embodiments, the electrode terminal 23 and the pressure relief mechanism 24 are both disposed on a side of the battery cell 20 away from the heat exchange plate 30 .

[0164] In some embodiments, the other end of the accommodating space 10 a has a second opening 10 c . The battery 2 further includes a bottom plate 80 , which covers the second opening 10 c and is connected to the frame 10 .

[0165] The bottom plate 80 and the heat exchange plate 30 can seal the accommodation space 10 a from both sides, thereby improving the sealing performance of the battery 2 .

[0166] In some embodiments, the battery 2 includes a box body, which includes a bottom plate 80 , a heat exchange plate 30 and a frame 10 .

[0167] In some embodiments, the heat exchange plate 30 and the bottom plate 80 are respectively located on the upper side and the lower side of the frame 10 in the vertical direction.

[0168] In some embodiments, the battery cells 20 are fixed to the heat exchange plate 30. The bottom plate 80 does not need to support the battery cells 20, which can reduce the strength requirements of the bottom plate 80, thereby reducing the thickness and weight of the bottom plate 80 and improving the energy density of the battery 2.

[0169] In some embodiments, the frame 10 includes a second beam 11 and a third beam 12. The first beam 40, the second beam 11, and the third beam 12 all extend along a first direction X, and the second beam 11, the first beam 40, and the third beam 12 are spaced apart along a second direction Y. The first direction X intersects the second direction Y, and optionally, the first direction X is perpendicular to the second direction Y.

[0170] In some embodiments, in the second direction Y, the battery cell 20 is located between the second beam 11 and the first beam 40. The first beam 40 and the second beam 11 are used to constrain the battery cell 20 from both sides.

[0171] In some embodiments, the plurality of battery cells 20 are arranged along the second direction Y.

[0172] In some embodiments, the frame 10 further includes two fourth beams 13 oppositely arranged along the first direction X. The fourth beam 13 extends along the second direction Y. Two ends of the fourth beam 13 along the second direction Y are respectively connected to the second beam 11 and the third beam 12 .

[0173] Both ends of the first beam 40 along the first direction X are connected to the two fourth beams 13 respectively.

[0174] In some embodiments, the heat exchange plate 30 is fixed to the second beam 11 , the third beam 12 and the two fourth beams 13 .

[0175] In some embodiments, the battery 2 further includes a first connector 90 , which fixes the protective plate 50 , the heat exchange plate 30 and the frame 10 .

[0176] The first connector 90 fixes the protection plate 50 and the heat exchange plate 30 to the frame 10 at the same time, thereby improving the stability of the protection plate 50 and the heat exchange plate 30 .

[0177] In some embodiments, the first connecting member 90 passes through the protective plate 50 and the heat exchange plate 30 and is fixed to the frame 10 .

[0178] In some embodiments, there are multiple first connecting members 90 , and the multiple first connecting members 90 are spaced apart along the circumference of the frame 10 .

[0179] In some embodiments, the first connector 90 may include an FDS (Fused Detapping Screw), a bolt, or other fasteners.

[0180] In some embodiments, the battery 2 further includes a second connector 91 , which fixes the protective plate 50 , the heat exchange plate 30 , and the first beam 40 .

[0181] The second connecting member 91 fixes the protection plate 50 and the heat exchange plate 30 to the first beam 40 at the same time, which can improve the stability of the protection plate 50 and the heat exchange plate 30.

[0182] In some embodiments, the second connecting member 91 passes through the protective plate 50 and the heat exchange plate 30 and is fixed to the first beam 40 .

[0183] In some embodiments, there are multiple second connecting members 91 , and the multiple second connecting members 91 are arranged along the first direction X at intervals.

[0184] In some embodiments, the second connecting member 91 may include an FDS (Fused Detapping Screw), a bolt, or other fasteners.

[0185] Figure 6 is an enlarged schematic diagram of Figure 5 at the circle C; Figure 7 is a partial cross-sectional schematic diagram of Figure 6 taken along the EE direction; Figure 8 is a top view schematic diagram of the battery provided in some embodiments of the present application; Figure 9 is a cross-sectional schematic diagram of Figure 8 taken along the FF direction; Figure 10 is an enlarged schematic diagram of Figure 9 at the circle.

[0186] 6 to 10 , in some embodiments, the heat exchange plate 30 includes a flow channel region 30 a and a non-flow channel region 30 b . The flow channel region 30 a is provided with a flow channel 31 for the heat exchange medium to flow.

[0187] When passing through the flow channel 31 , the heat exchange medium contacts the flow channel region 30 a and exchanges heat therewith.

[0188] In some embodiments, in the thickness direction Z of the heat exchange plate 30 , at least a portion of the flow channel region 30 a protrudes from the non-flow channel region 30 b .

[0189] Illustratively, the flow channel region 30 a protrudes from the non-flow channel region 30 b in a direction away from the battery cell 20 , and may also protrude from the non-flow channel region 30 b in a direction toward the battery cell 20 .

[0190] In some embodiments, the heat exchange plate 30 includes a first plate 32 and a second plate 33 arranged in a stacked manner. The first plate 32 is connected to the battery cell 20, and the second plate 33 is located on a side of the first plate 32 facing away from the battery cell 20 and connected to the protective plate 50. The flow channel 31 is formed between the first plate 32 and the second plate 33.

[0191] The first plate 32 and the second plate 33 can be formed independently, so that the shape of the flow channel 31 can be flexibly set, the molding difficulty of the heat exchange plate 30 is reduced, and the uniformity of heat exchange is improved.

[0192] In some embodiments, the first plate 32 and the second plate 33 are welded. The weld between the first plate 32 and the second plate 33 is circumferential to improve sealing.

[0193] In some embodiments, the stacking direction of the first plate 32 and the second plate 33 is parallel to the thickness direction Z of the heat exchange plate 30 . Optionally, the thickness direction Z of the heat exchange plate 30 is parallel to the vertical direction, and the second plate 33 is located above the first plate 32 .

[0194] In some embodiments, the first plate 32 is a flat plate with a smooth surface to facilitate arrangement of the battery cells 20 .

[0195] In some embodiments, a fourth recess 331 is defined on a side of the second plate 33 facing the first plate 32 , and the first plate 32 covers the fourth recess 331 to form the flow channel 31 .

[0196] In some embodiments, the second plate 33 has a fourth protrusion 332 formed at a position corresponding to the fourth recess 331. The fourth protrusion 332 protrudes toward a side away from the first plate 32. The provision of the fourth protrusion 332 increases the depth of the fourth recess 331, thereby increasing the flow area of ​​the flow channel 31 and reducing the effect of the fourth recess 331 on the strength of the second plate 33, thereby improving the reliability of the second plate 33.

[0197] In some embodiments, the shapes of the fourth convex portion 332 and the fourth concave portion 331 correspond to each other.

[0198] In some embodiments, the fourth convex portion 332 and the fourth concave portion 331 may be formed by punching the second plate 33 .

[0199] In some embodiments, the heat exchange plate 30 further includes an inlet and an outlet (not shown), and the flow channel 31 connects the inlet and the outlet. The heat exchange medium can flow into the flow channel 31 through the inlet and flow out through the outlet.

[0200] In some embodiments, the inlet can be provided on the first plate 32 or the second plate 33 . The outlet can be provided on the first plate 32 or the second plate 33 .

[0201] In some embodiments, the protection plate 50 is fixed to the non-flow channel area 30b. For example, the protection plate 50 is fixed to the non-flow channel area 30b by bonding, welding, fastener connection or other means.

[0202] The non-flow channel area 30b is not provided with the flow channel 31. Fixing the protective plate 50 to the non-flow channel area 30b can reduce the force transmitted to the flow channel area 30a when the protective plate 50 is impacted, thereby reducing the deformation of the flow channel 31.

[0203] In some embodiments, the first connector 90 passes through the first plate 32 and the second plate 33. The second connector 91 passes through the first plate 32 and the second plate 33.

[0204] In some embodiments, the second connecting member 91 passes through the protective plate 50 , the second plate 33 , and the first plate 32 and is fixed to the first beam 40 .

[0205] In some embodiments, the non-flow channel region 30b includes a portion where the first plate 32 and the second plate 33 are attached to each other. The flow channel region 30a includes the fourth protrusion 332 of the second plate 33 and a portion of the first plate 32 corresponding to the fourth protrusion 332 along the thickness direction Z.

[0206] In some embodiments, in the thickness direction Z, the projection of the flow channel region 30 a is located within the projection of the protection plate 50 .

[0207] The protective plate 50 can protect the flow channel area 30a from the upper side, thereby reducing the impact force on the flow channel area 30a from the upper side, reducing the deformation of the flow channel area 30a, improving the uniformity of heat exchange, reducing the risk of rupture of the flow channel area 30a, and improving the reliability of the battery 2.

[0208] In some embodiments, in the thickness direction Z, the flow channel region 30 a is spaced apart from the protection plate 50 .

[0209] When the protective plate 50 is under pressure, the protective plate 50 may be deformed; spacing the flow channel area 30a from the protective plate 50 can provide space for the deformation of the protective plate 50, thereby reducing the risk of the protective plate 50 directly squeezing the flow channel area 30a.

[0210] In some embodiments, in the thickness direction Z, the projection of the heat exchange plate 30 is located within the projection of the protective plate 50. The protective plate 50 can completely cover the heat exchange plate 30, thereby protecting the heat exchange plate 30 and reducing the impact on the heat exchange plate 30.

[0211] In some embodiments, a portion of the non-flow channel region 30b is fixed to the frame 10 and the first beam 40. The non-flow channel region 30b does not form the flow channel 31. Fixing the non-flow channel region 30b to the frame 10 and the first beam 40 can reduce the force transmitted to the flow channel region 30a when the battery 2 is subjected to an external impact, reduce deformation of the flow channel 31, improve heat exchange uniformity, and reduce the risk of damage to the flow channel region 30a and leakage of the heat exchange medium.

[0212] In some embodiments, at least one of the flow channel region 30a and the non-flow channel region 30b is bonded to the protective plate 50. In this embodiment, only the flow channel region 30a may be bonded to the protective plate 50, only the non-flow channel region 30b may be bonded to the protective plate 50, or both the flow channel region 30a and the non-flow channel region 30b may be bonded to the protective plate 50.

[0213] By bonding the flow channel region 30 a or the non-flow channel region 30 b to the protective plate 50 , the connection strength between the heat exchange plate 30 and the protective plate 50 can be increased, thereby improving the stability of the battery 2 .

[0214] In some embodiments, a structural adhesive is provided between the flow channel region 30a and the protective plate 50. The structural adhesive is relatively soft, and when the protective plate 50 is compressed, the structural member can deform to provide space for the deformation of the protective plate 50, thereby reducing the force transmitted to the flow channel region 30a.

[0215] Figure 11 is an enlarged schematic diagram of the circle D in Figure 5; Figure 12 is a bottom-up schematic diagram of the protective plate of the battery provided in some embodiments of the present application; Figure 13 is a top-down schematic diagram of the protective plate, heat exchange plate and shell of the battery provided in some embodiments of the present application; Figure 14 is a partial cross-sectional schematic diagram of Figure 13 taken along the GG direction; Figure 15 is an enlarged schematic diagram of Figure 14 at the square frame; Figure 16 is an enlarged schematic diagram of Figure 8 at the circle frame.

[0216] 5 and 10 to 16 , in some embodiments, a first recess 51 is formed on the side of the protective plate 50 facing the heat exchange plate 30 . In the thickness direction Z of the heat exchange plate 30 , the projection of the flow channel region 30 a along the thickness direction Z is located within the projection of the first recess 51 .

[0217] By providing the first recess 51 , the flow channel area 30 a can be avoided, the distance between the bottom surface 511 of the first recess and the flow channel area 30 a is increased, and the risk of the protective plate 50 directly squeezing the flow channel area 30 a is reduced.

[0218] In some embodiments, the protective plate 50 includes an edge portion 52 disposed around the first recess 51 , the edge portion 52 abuts against the non-flow channel area 30 b , and the edge portion 52 , the non-flow channel area 30 b and the frame 10 are fixedly connected.

[0219] The edge portion 52 is located on the outer periphery of the protection plate 50 and fixed to the non-flow channel area 30b and the frame 10 to improve the stability of the protection plate 50. The edge portion 52 abuts against the non-flow channel area 30b and can also seal the first recess 51.

[0220] In some embodiments, the first connecting member 90 connects the edge portion 52 , the non-flow channel region 30 b and the frame 10 .

[0221] In some embodiments, the flow channel region 30a protrudes from the surface of the non-flow channel region 30b facing the protective plate 50, and a portion of the flow channel region 30a is accommodated in the first recess 51. The first recess 51 can avoid the flow channel region 30a, providing space for the flow channel region 30a, thereby improving space utilization.

[0222] In some embodiments, structural adhesive is disposed within the first recess 51 , bonding the flow channel region 30a and the protective plate 50 . This adhesive strengthens the connection between the flow channel region 30a and the protective plate 50, thereby enhancing the stability of the battery 2 . The first recess 51 also serves to position the structural adhesive, reducing excess adhesive.

[0223] In some embodiments, in the thickness direction Z, the bottom surface 511 of the first recess is spaced apart from the flow channel region 30 a .

[0224] When the protective plate 50 is under pressure, the protective plate 50 may be deformed; spacing the flow channel area 30a from the bottom surface 511 of the first recess can provide space for the deformation of the protective plate 50, thereby reducing the risk of the protective plate 50 directly squeezing the flow channel area 30a.

[0225] In some embodiments, the protective plate 50 further includes a first protrusion 53 protruding from the bottom surface 511 of the first recess, the first protrusion 53 abuts against the non-flow channel area 30b, and the first protrusion 53, the non-flow channel area 30b and the first beam 40 are fixedly connected.

[0226] The first protrusion 53 may be a solid structure or a hollow structure.

[0227] The number of the first protrusion 53 may be one or more.

[0228] The first protrusion 53 may be connected to the side surface of the first recess 51 , or may be spaced apart from the side surface of the first recess 51 .

[0229] The first protrusion 53 can compensate for the gap between the bottom surface 511 of the first recess and the non-flow channel area 30b, thereby being able to offset the non-flow channel area 30b, thereby achieving a fixed connection between the first protrusion 53, the non-flow channel area 30b and the first beam 40, thereby improving the strength of the battery 2.

[0230] In some embodiments, the top surface 531 of the first protrusion is flush with the surface of the edge portion 52 facing the non-flow channel region 30 b .

[0231] In some embodiments, the protective plate 50 further includes a second protrusion 54, which protrudes from the surface of the edge portion 52 facing away from the non-flow channel region 30b. The first recess 51 is formed at a position of the protective plate 50 corresponding to the second protrusion 54. By providing the second protrusion 54, the depth of the first recess 51 can be increased, thereby improving the strength of the protective plate 50.

[0232] Exemplarily, the second convex portion 54 and the first concave portion 51 have corresponding shapes.

[0233] In some embodiments, the first protrusion 53 is connected to the second protrusion 54. For example, the first protrusion 53 and the second protrusion 54 protrude in opposite directions. The first protrusion 53 protrudes toward the heat exchange plate 30, and the second protrusion 54 protrudes away from the heat exchange plate 30.

[0234] By providing the first protrusion 53 and the second protrusion 54 , the structural strength of the protective plate 50 can be improved and the deformation of the protective plate 50 can be reduced.

[0235] In some embodiments, the protection plate 50 further has a second recess 55 , which is recessed from the surface of the protection plate 50 facing away from the heat exchange plate 30 , and is formed at a position of the protection plate 50 corresponding to the first protrusion 53 .

[0236] By providing the second recess 55 , the molding process of the protective plate 50 can be simplified, the weight of the protective plate 50 can be reduced, and the difficulty of connecting the first protrusion 53 with the non-flow channel area 30 b can be reduced.

[0237] Exemplarily, the shapes of the first convex portion 53 and the second concave portion 55 correspond.

[0238] In some embodiments, in the thickness direction Z of the heat exchange plate 30 , the minimum depth h1 of the second recess 55 is 0.1 mm to 50 mm. Optionally, the minimum depth h1 of the second recess 55 is 1 mm to 5 mm.

[0239] In the embodiment of the present application, h1 is limited to be greater than or equal to 0.1 mm to improve the structural strength of the protective plate 50. h1 is limited to be less than or equal to 50 mm to reduce the size of the protective plate 50 in the thickness direction Z and improve space utilization.

[0240] In some embodiments, a portion of the second connecting member 91 is accommodated in the second recess 55. The second recess 55 can also provide an accommodating space 10a for the second connecting member 91, thereby improving space utilization.

[0241] In some embodiments, the portion of the second connector 91 located outside the protective plate 50 in a direction away from the heat exchange plate 30 does not extend beyond the top surface 541 of the second protrusion. This embodiment of the present application can reduce the extra space occupied by the second connector 91 in the thickness direction Z, thereby improving space utilization.

[0242] In some embodiments, the second concave portion 55 is further filled with colloid, which can fill the remaining space of the second concave portion 55 and improve the smoothness of the appearance of the protective plate 50.

[0243] In some embodiments, the protective plate 50 can be formed by installing the following steps: providing a flat plate structure; stamping one side of the flat plate structure to form a first recess 51 and a second protrusion 54 at the stamping position of the flat plate structure; and stamping again on the top surface 541 of the second protrusion to form a first protrusion 53 and a second recess 55 at the stamping position.

[0244] In some embodiments, the housing 71 has an end surface 712 at one end facing the protection plate 50 , and the end surface 712 abuts against the protection plate 50 . In the thickness direction Z, the projection of the end surface 712 does not overlap with the projection of the second recess 55 .

[0245] Exemplarily, the end surface 712 of the housing 71 abuts against the top surface 541 of the second protrusion.

[0246] In the embodiment of the present application, the end surface 712 of the shell 71 can be arranged to avoid the second recess 55 to reduce the risk of the second recess 55 connecting the space inside and outside the shell 71, thereby improving the sealing and reliability of the distribution box 70.

[0247] In some embodiments, the first beam 40 extends along the first direction X; the protective plate 50 is provided with a plurality of second recesses 55 , and the plurality of second recesses 55 are arranged along the first direction X at intervals.

[0248] By providing a plurality of second recesses 55 , the protection plate 50 can be provided with a plurality of sites for connection with the non-flow channel area 30 b , thereby improving the connection strength among the protection plate 50 , the non-flow channel area 30 b and the first beam 40 .

[0249] In some embodiments, a portion of the end surface 712 is fixed to a portion of the protection plate 50 located between two adjacent second recesses 55 .

[0250] The embodiment of the present application utilizes the portion between the second recesses 55 to fix the housing 71 , which can avoid the second recesses 55 and the end surface 712 of the housing 71 and improve space utilization.

[0251] In some embodiments, in the first direction X, a minimum distance L1 between adjacent second recesses 55 is 1 mm to 200 mm. Optionally, L1 is 20 mm to 100 mm.

[0252] In the embodiment of the present application, L1 is limited to be greater than or equal to 1 mm so that the connection area between the housing 71 and the protective plate 50 meets the requirements and improves the sealing performance of the housing 71. In the embodiment of the present application, L1 is limited to be less than or equal to 200 mm to reserve sufficient space for the second recess 55, thereby providing more locations for the connection between the protective plate 50 and the non-flow channel area 30b.

[0253] In some embodiments, there are a plurality of first convex portions 53 , and the plurality of first convex portions 53 are spaced apart along the first direction X. The first convex portions 53 and the second concave portions 55 are disposed in a one-to-one correspondence.

[0254] In some embodiments, in the thickness direction Z, a projection of the at least one second recess 55 is located within a projection of a space enclosed by the housing 71 .

[0255] In some embodiments, the two second recesses 55 are respectively disposed on two sides of the housing 71 along the first direction X.

[0256] In some embodiments, a plurality of second connectors 91 are disposed corresponding to the second recess 55. For example, the second connector 91 is an FDS, which passes through the protective plate 50 and the heat exchange plate 30 and is screwed to the first beam 40.

[0257] Figure 17 is a partial cross-sectional schematic diagram of Figure 13 taken along the HH direction; Figure 18 is an enlarged schematic diagram of Figure 17 at the circle frame; and Figure 19 is an enlarged schematic diagram of Figure 2 at the circle frame B.

[0258] 2 , 12 , 13 , and 17 to 19 , in some embodiments, the protective plate 50 further includes a third protrusion 56 protruding from the bottom surface 511 of the first recess, the third protrusion 56 abuts against the non-flow channel area 30 b , and the third protrusion 56 , the non-flow channel area 30 b and the frame 10 are fixedly connected.

[0259] The third protrusion 56 may be a solid structure or a hollow structure.

[0260] The number of the third protrusion 56 may be one or more.

[0261] The third protrusion 56 may be connected to the side surface of the first recess 51 , or may be spaced apart from the side surface of the first recess 51 .

[0262] The third protrusion 56 can compensate for the gap between the bottom surface 511 of the first recess and the non-flow channel area 30b, thereby being able to offset the non-flow channel area 30b, thereby achieving a fixed connection between the third protrusion 56, the non-flow channel area 30b and the frame 10, thereby improving the strength of the battery 2.

[0263] In some embodiments, the protective plate 50 includes a plurality of third protrusions 56 spaced apart along the first direction X. The plurality of third protrusions 56 can provide the protective plate 50 with multiple connection sites to the non-flow channel area 30 b, thereby improving the connection strength among the protective plate 50 , the non-flow channel area 30 b , and the frame.

[0264] In some embodiments, in the first direction X, a portion of the flow channel region 30 a is located between two adjacent third protrusions 56 .

[0265] The embodiment of the present application can utilize the space between the third protrusions 56 to improve space utilization while avoiding the third protrusions 56 and the flow channel area 30a.

[0266] In some embodiments, there are at least three third protrusions 56. The three third protrusions 56 are defined as a first third protrusion 56, a second third protrusion 56, and a third third protrusion 56 in sequence along the first direction X. A portion of the flow channel region 30a is located between the first third protrusion 56 and the second third protrusion 56 and communicates with the inlet, and another portion of the flow channel region 30a is located between the second third protrusion 56 and the third third protrusion 56 and communicates with the outlet.

[0267] In some embodiments, the protective plate 50 further defines a third recess 57 , which is recessed from the surface of the protective plate 50 facing away from the heat exchange plate 30 and is formed at a position of the protective plate 50 corresponding to the third protrusion 56 .

[0268] By providing the third recess 57 , the molding process of the protective plate 50 can be simplified, the weight of the protective plate 50 can be reduced, and the difficulty of connecting the third protrusion 56 with the non-flow channel area 30 b can be reduced.

[0269] Exemplarily, the shapes of the third convex portion 56 and the third concave portion 57 correspond.

[0270] In some embodiments, the minimum depth h2 of the third recess 57 is 0.1 mm to 50 mm in the thickness direction Z. Alternatively, the minimum depth h2 of the third recess 57 is 1 mm to 5 mm.

[0271] In some embodiments, in the first direction X, a minimum distance L2 between adjacent third recesses 57 is 1 mm-200 mm. Optionally, L2 is 20 mm-100 mm.

[0272] In some embodiments, at least one first connecting member 90 connects the third protrusion 56 , the non-flow channel region 30 b , and the frame 10 .

[0273] In some embodiments, a portion of the first connector 90 is accommodated in the third recess 57. The third recess 57 can also provide an accommodating space 10a for the first connector 90, thereby improving space utilization.

[0274] In some embodiments, the portion of the first connector 90 located outside the protective plate 50 does not extend beyond the top surface 541 of the second protrusion in the direction away from the heat exchange plate 30. This embodiment of the present application can reduce the additional space occupied by the first connector 90 in the thickness direction Z, thereby improving space utilization.

[0275] In some embodiments, the third recess 57 is further filled with colloid, which can fill the remaining space in the third portion and improve the smoothness of the protective plate 50.

[0276] In some embodiments, the protective plate 50 can be formed by installing the following steps: providing a flat plate structure; stamping one side of the flat plate structure to form a first recess 51 and a second protrusion 54 at the stamping position of the flat plate structure; and stamping again on the top surface 541 of the second protrusion to form a first protrusion 53, a second recess 55, a third protrusion 56 and a third recess 57 at the stamping position.

[0277] In some embodiments, the frame 10 includes a second beam 11 and a third beam 12 disposed opposite each other along a second direction Y. The first beam 40, the second beam 11, and the third beam 12 all extend along a first direction X, and the first direction X is perpendicular to the second direction Y. In the second direction Y, the battery cell 20 is located between the second beam 11 and the first beam 40.

[0278] In some embodiments, the third protrusion 56 , the non-flow channel region 30 b and the second beam 11 are fixedly connected to improve the structural strength of the battery 2 and reduce the risk of connection failure between the heat exchange plate 30 and the frame 10 .

[0279] In some embodiments, some first connectors 90 fixedly connect the edge portion 52 , the non-flow channel area 30 b and the second beam 11 , and other first connectors 90 fixedly connect the third protrusion 56 , the non-flow channel area 30 b and the second beam 11 .

[0280] In some embodiments, referring to FIG. 4 and FIG. 19 , in the second direction Y, a minimum dimension W1 of the second beam 11 is greater than a minimum dimension W2 of the third beam 12 .

[0281] The second beam 11 has a large size and strength, and can withstand the expansion force of the battery cell 20 , and can also be fixedly connected to the third protrusion 56 and the edge portion 52 at the same time, thereby improving the overall structural strength of the battery 2 .

[0282] FIG20 is a schematic diagram of an electrical device provided in some other embodiments of the present application.

[0283] 20 , the present application further provides an electrical device comprising a battery 2 according to any of the above embodiments, the battery 2 being used to provide electrical energy to the electrical device. The electrical device may be any of the aforementioned devices or systems using the battery 2.

[0284] In some embodiments, the electrical device is a vehicle, and the heat exchange plate 30 can be embedded in the interior of the vehicle, which can reduce the risk of the heat exchange plate 30 being subjected to external impact.

[0285] In some embodiments, the protective plate 50 forms at least a portion of the vehicle's floor. Using the protective plate 50 of the battery 2 as the floor can save vehicle components, improve vehicle integration, and simplify vehicle assembly. The protective plate 50 can withstand passenger footsteps, minimize deformation of the flow channel 31, and improve heat exchange uniformity.

[0286] In some embodiments, the vehicle includes a seat 5, which is connected to a protective plate 50. The protective plate 50 can carry the seat 5, thereby improving the space utilization of the entire vehicle.

[0287] In some embodiments, the seat 5 is mounted to the reinforcement beam 60 .

[0288] 2 to 19 , an embodiment of the present application provides a battery 2 , which includes a frame 10 , a battery cell 20 , a heat exchange plate 30 , a protective plate 50 , a first beam 40 , a distribution box 70 , a reinforcing beam 60 , and a bottom plate 80 .

[0289] The frame 10 encloses a storage space 10a, within which the battery cells 20 are located. A first opening 10b and a second opening 10c are formed vertically on the upper and lower sides of the storage space 10a, respectively. A heat exchange plate 30 is secured to the frame 10, covering the first opening 10b and exchanging heat with the battery cells 20. The bottom plate 80 covers the second opening 10c and is connected to the frame 10.

[0290] A first beam 40 is disposed in the accommodation space 10a, and both ends of the first beam 40 are connected to the frame 10. A protective plate 50 is disposed on a side of the heat exchange plate 30 away from the battery cells 20 and is fixed to the heat exchange plate 30. A reinforcing beam 60 is disposed on a side of the protective plate 50 away from the heat exchange plate 30 and is fixed to the protective plate 50. The reinforcing beam 60 is used to mount the vehicle seat 5.

[0291] The distribution box 70 includes a shell 71 and an electrical component 72 . The shell 71 is located on the side of the protective plate 50 away from the heat exchange plate 30 . The shell 71 and the protective plate 50 define a receiving cavity. The electrical component 72 is disposed in the receiving cavity and electrically connected to the battery cell 20 .

[0292] The heat exchange plate 30 includes a flow channel area 30a and a non-flow channel area 30b. The flow channel area 30a is provided with a flow channel 31 for the heat exchange medium to flow. The flow channel area 30a protrudes from the side of the non-flow channel area 30b facing the protective plate 50.

[0293] The protective plate 50 has a first recess 51 on one side facing the heat exchange plate 30. The protective plate 50 includes an edge portion 52 surrounding the first recess 51. The edge portion 52 abuts against the non-flow channel area 30b, and the edge portion 52, the non-flow channel area 30b and the frame 10 are fixedly connected.

[0294] The protection plate 50 further includes a first protrusion 53 protruding from the bottom surface 511 of the first recess. The first protrusion 53 abuts against the non-flow channel area 30 b , and the first protrusion 53 , the non-flow channel area 30 b and the first beam 40 are fixedly connected.

[0295] The protection plate 50 further includes a second protrusion 54 protruding from a surface of the edge portion 52 facing away from the non-flow channel region 30 b . The first recess 51 is formed at a position of the protection plate 50 corresponding to the second protrusion 54 .

[0296] The protection plate 50 further defines a second recess 55 , which is recessed from a surface of the protection plate 50 facing away from the heat exchange plate 30 . The second recess 55 is formed at a position of the protection plate 50 corresponding to the first protrusion 53 .

[0297] The protection plate 50 further includes a third protrusion 56 protruding from the bottom surface 511 of the first recess. The third protrusion 56 abuts against the non-flow channel area 30 b , and the third protrusion 56 , the non-flow channel area 30 b and the frame 10 are fixedly connected.

[0298] The protection plate 50 further defines a third recess 57 , which is recessed from a surface of the protection plate 50 facing away from the heat exchange plate 30 , and is formed at a position of the protection plate 50 corresponding to the third protrusion 56 .

[0299] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0300] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery comprising: A frame body, enclosing to form a receiving space, wherein one end of the receiving space has a first opening; A battery cell is arranged in the accommodation space; A first beam, disposed in the accommodation space, with both ends of the first beam connected to the frame, and the first beam is used to limit the expansion of the battery cell; A heat exchange plate covers the first opening and is used for exchanging heat with the battery cell. The heat exchange plate is fixedly connected to the frame and the first beam.

2. The battery according to claim 1, wherein, The heat exchange plate comprises a flow channel area and a non-flow channel area, and the flow channel area is provided with a flow channel for the heat exchange medium to flow; The non-flow channel region is partially fixed to the frame and the first beam.

3. The battery according to claim 1 or 2, wherein, It also includes a protection plate, which is arranged on a side of the heat exchange plate away from the battery cell and connected to the heat exchange plate.

4. The battery according to claim 3, wherein, A first recess is provided on one side of the protective plate facing the heat exchange plate; The heat exchange plate comprises a flow channel area and a non-flow channel area, and the flow channel area is provided with a flow channel for the heat exchange medium to flow; In the thickness direction of the heat exchange plate, the projection of the flow channel region along the thickness direction is located within the projection of the first recess; The protection plate includes an edge portion arranged around the first recess, the edge portion abuts against the non-flow channel area, and the edge portion, the non-flow channel area and the frame are fixedly connected.

5. The battery according to claim 4, wherein, In the thickness direction, the bottom surface of the first recess is spaced apart from the flow channel region.

6. The battery according to claim 4 or 5, wherein, The protection plate further includes a first convex portion protruding from a bottom surface of the first concave portion, the first convex portion abuts against the non-flow channel area, and the first convex portion, the non-flow channel area and the first beam are fixedly connected.

7. The battery according to claim 6, wherein, The protection plate further includes a second convex portion, the second convex portion protrudes from the surface of the edge portion away from the non-flow channel area, and the first concave portion is formed at a position of the protection plate corresponding to the second convex portion; The first protrusion is connected to the second protrusion.

8. The battery according to claim 6 or 7, wherein The protection plate is further provided with a second recessed portion, which is recessed from a surface of the protection plate away from the heat exchange plate, and is formed at a position of the protection plate corresponding to the first protrusion.

9. The battery according to claim 8, wherein, The battery further comprises a distribution box, the distribution box comprising a shell and an electrical component, the shell is located on a side of the protective plate away from the heat exchange plate, the shell and the protective plate define a receiving cavity, the electrical component is disposed in the receiving cavity and electrically connected to the battery cell; The shell has an end surface at one end facing the protective plate, and the end surface abuts against the protective plate; in the thickness direction, a projection of the end surface does not overlap with a projection of the second recess.

10. The battery according to claim 9, wherein The first beam extends along a first direction; the protective plate is provided with a plurality of the second recesses, and the plurality of the second recesses are arranged at intervals along the first direction; A portion of the end surface is fixed to a portion of the protection plate located between two adjacent second recesses.

11. The battery according to any one of claims 4-10, wherein, The protection plate further includes a third protrusion protruding from the bottom surface of the first recess, the third protrusion abuts against the non-flow channel area, and the third protrusion, the non-flow channel area and the frame are fixedly connected.

12. The battery according to claim 11, wherein, The protective plate includes a plurality of third protrusions arranged at intervals in the first direction; In the first direction, a part of the flow channel region is located between two adjacent third protrusions.

13. The battery according to claim 11 or 12, wherein, The frame body includes a second beam and a third beam arranged opposite to each other in the second direction, the first beam, the second beam, and the third beam all extend in the first direction, and the first direction is perpendicular to the second direction; In the second direction, the battery cell is located between the second beam and the first beam; The third protrusion, the non-flow channel region, and the second beam are fixedly connected.

14. The battery according to claim 13, wherein, In the second direction, the minimum dimension of the second beam is greater than the minimum dimension of the third beam.

15. The battery according to any one of claims 3-14 further includes a first connecting member and a second connecting member, the first connecting member fixes the protective plate, the heat exchange plate, and the frame body, and the second connecting member fixes the protective plate, the heat exchange plate, and the first beam.

16. The battery according to any one of claims 3-15 further includes a strengthening beam, the strengthening beam is arranged on a side of the protective plate facing away from the heat exchange plate and is fixed to the protective plate.

17. The battery according to claim 16, wherein, The strengthening beam is used for installing a vehicle seat.

18. The battery according to any one of claims 3-17, wherein, The heat exchange plate includes a flow channel region and a non-flow channel region, and the flow channel region is provided with a flow channel for a heat exchange medium to flow; At least one of the flow channel region and the non-flow channel region is bonded to the protective plate.

19. The battery according to any one of claims 1-18, wherein, The first opening is arranged at the upper end of the accommodation space in the vertical direction, and the heat exchange plate is located above the frame body.

20. The battery according to any one of claims 1-19, wherein, The battery cell is fixed to the heat exchange plate.

21. The battery according to any one of claims 1-20, wherein, The other end of the accommodation space has a second opening; The battery further includes a bottom plate, the bottom plate covers the second opening and is connected to the frame body.

22. An electric device includes the battery according to any one of claims 1-21, and the battery is used to provide electric energy.

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