Bottom plate, case and battery having same, and electric device

Abstract

A bottom plate (10), a case and a battery (100) having same, and an electric device (1000), relating to the technical field of batteries. Accommodating grooves (12) are formed in one side of the bottom plate (10) in the thickness direction, and the accommodating grooves (12) are suitable for accommodating heat exchange tubes (20). The bottom plate (10) comprises a plurality of assembled panels (11), wherein the plurality of assembled panels (11) are arranged in a first plane, and two adjacent assembled panels (11) are joined by welding so as to a weld seam (102). The accommodating grooves (12) are formed on the plurality of assembled panels (11) and bend and extend on the plurality of assembled panels (11), and the accommodating grooves (12) intersect with any weld seam (102) no more than twice.

Description

Bottom plate, box body, battery with same and electric device with same

[0001] Cross-reference to related applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202421248142.5, filed on June 3, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a bottom plate, a box body, a battery with the same, and an electric device with the same. BACKGROUND

[0004] The bottom plate is formed by welding a plurality of plates together during processing and manufacturing. Since a groove structure needs to be formed on the bottom plate to match the assembly and arrangement of the heat exchange pipe, the groove structure often needs to be arranged across the welding joint between the plates. In related technologies, the number of grooves crossing the welding joint between the plates is large, which makes the joint surface of the plates at the joint site complex and inconvenient to joint. Moreover, the groove structure reduces the structural strength of the plates at the joint site, which reduces the welding strength when the plates are welded and makes the welding quality unstable, thereby making the size accuracy of the bottom plate after processing poor and the air tightness poor.

[0005] SUMMARY

[0006] The present application aims to at least partially solve one of the above technical problems in the prior art. To this end, the present application proposes a bottom plate that can make the joint surface at the joint site simple and convenient for joint forming, so that the welding of the bottom plate has good welding strength and better and more stable welding quality, thereby making the bottom plate have good size accuracy and air tightness.

[0007] The present application also proposes a box body with the above bottom plate.

[0008] The present application also proposes a battery with the above box body.

[0009] The present application also proposes an electric device with the above battery.

[0010] According to the bottom plate of the first aspect of the present application, the bottom plate is provided with a receiving groove on one side in the thickness direction, and the receiving groove is suitable for accommodating a heat exchange pipe. The bottom plate comprises: a plurality of joint plates, the plurality of joint plates are arranged in a first plane, and two adjacent joint plates are welded and connected to form a weld joint; the receiving groove is formed on the plurality of joint plates and extends by bending on the plurality of joint plates, and the receiving groove intersects with any one of the weld joints less than or equal to twice.

[0011] According to the bottom plate provided in the application, by arranging a plurality of spliced plates, the adjacent spliced plates are welded and connected to form welds, the accommodating grooves are formed on the plurality of spliced plates and intersect with any one of the welds less than or equal to twice, the spliced surface of the spliced plate has a simple structure and good structural strength, so that the positioning of the plurality of spliced plates is more convenient and easier when spliced, and the welding quality is better and more stable when the plurality of spliced plates are welded, so that the bottom plate can have good dimensional accuracy and air tightness.

[0012] In some embodiments of the application, the plurality of spliced plates are arranged in sequence along a first direction, and the welds between the adjacent two spliced plates extend along a second direction, and the first direction intersects the second direction.

[0013] In the embodiment, the plurality of spliced plates are arranged in sequence along a first direction, and the welds extend along a second direction, so that the structure is simple, splicing is convenient, and the bottom plate is conveniently formed by splicing and welding.

[0014] In an embodiment of the application, the accommodating groove comprises a plurality of groove segments, the plurality of groove segments are sequentially connected, the adjacent two groove segments are arranged at an angle, and any one of the groove segments intersects with the weld or is arranged at intervals from the weld.

[0015] In the embodiment, the groove segment is arranged to intersect with the weld or is arranged at intervals from the weld, which can well reduce the probability that the weld and the groove segment have a large overlap area, so that the weld can have a small groove structure, so that the spliced surface of the spliced plate at the weld has good structural strength, and the welding strength and welding quality of the spliced plate spliced and welded are well guaranteed.

[0016] In some examples of the application, at least one of the groove segments intersects with the weld, and the included angle between the groove segment and the weld is greater than 45° and less than 135°.

[0017] In the embodiment, the included angle between the groove segment and the weld is limited to be greater than 45° and less than 135°, so that the included angle between the groove segment and the weld is in a more appropriate range, the spliced surface of the spliced plate at the weld can maintain good structural strength, so that the spliced plate can have good welding structural strength, and the bottom plate can have good splicing and welding effect.

[0018] In some examples of the application, at least one of the groove segments is arranged at intervals from the weld, and the spacing between the groove segment and the adjacent weld is greater than or equal to 5 mm.

[0019] The interval between the groove segments and the welds arranged at intervals is limited to be greater than or equal to 5 mm in the embodiment, so that the spliced plate has sufficient plate structure size between the groove segments and the welds, thereby making the plate body of the spliced plate between the groove segments and the welds have good structural strength, in particular, the spliced surface of the spliced plate at the welds can have good structural strength, so that the spliced plate can be well spliced and aligned and welded, and the overall structure of the bottom plate is more stable.

[0020] In some examples of the present application, the two groove segments connected in sequence are connected by a circular arc.

[0021] In the embodiment, the two groove segments connected in sequence are connected by a circular arc, which is simple in structure and convenient to connect, and well meets the arrangement needs of the containing groove. Of course, the two adjacent groove segments can also be connected by a right angle, and the adjacent groove segments can be connected in the most suitable connection mode according to needs.

[0022] In some embodiments of the present application, the containing groove comprises: a first groove part, which is bent and extended to be a U-shaped groove part with one side open in a second direction; and a second groove part, which is arranged in the U-shaped region and is bent and extended, and one end of the second groove part is connected to one end of the first groove part.

[0023] In the embodiment, the containing groove is provided as the first groove part and the second groove part, and the first groove part is U-shaped, and the second groove part is bent and extended and arranged in the U-shaped region, so that the overall structure of the containing groove is arranged more compactly and reasonably on the bottom plate, and meets the arrangement needs of the heat exchange pipe on the bottom plate.

[0024] In some embodiments of the present application, the first groove part comprises: a first segment, which extends along a first direction; a second segment, which extends along a second direction and is connected to one end of the first segment; and a third segment, which extends along the second direction and is connected to the other end of the first segment, and the first segment, the second segment and the third segment cooperate to define the U-shaped region, wherein the first segment intersects with at least one of the welds, and the second segment and the third segment are arranged at intervals from the welds.

[0025] In the embodiment, the first groove part is provided as the first segment, the second segment and the third segment, the first segment cooperates with the second segment and the third segment to define the U-shaped region, which is simple in structure and convenient to arrange, the first segment intersects with at least one of the welds, which can meet the arrangement needs of the containing groove on the bottom plate, and the second segment and the third segment are arranged at intervals from the welds, which can well reduce the weakening of the structural strength of the spliced plate at the welds by the containing groove, so that the welding effect is better when the spliced plate is spliced and welded.

[0026] In some embodiments of the present application, the second groove portion comprises: fourth segments and fifth segments, the fourth segments are arranged in the second direction and are spaced apart in the first direction, the fifth segments extend in the first direction, and the fourth segments are sequentially connected by the fifth segments in the first direction, wherein the fourth segments are spaced apart from the welds, and part of the fifth segments intersect with the welds.

[0027] In the present embodiment, the second groove portion is provided to comprise the fourth segments and the fifth segments, and the fourth segments are sequentially connected by the fifth segments, which is simple in structure and reasonable in arrangement, and can well meet the arrangement needs of the receiving groove on the bottom plate. The fourth segments are spaced apart from the welds, which can better reduce the weakening of the receiving groove to the structural strength of the joint plate at the welds, so that the joint surface of the joint plate at the welds has good welding strength, and the butt welding effect of the joint plates is better. Part of the fifth segments intersect with the welds, which can meet the extension needs of the receiving groove on the joint plates, and cooperate with the first groove portion to make the receiving groove intersect with each weld less than or equal to twice.

[0028] In some embodiments of the present application, the number of the receiving grooves is multiple, and the receiving grooves are spaced apart in the second direction.

[0029] In the present embodiment, multiple receiving grooves are provided, which can meet the needs of the arrangement of the heat exchange pipes on the bottom plate, and is simple in structure and convenient to arrange.

[0030] In one embodiment of the present application, the number of the receiving grooves is two, and the receiving grooves are symmetrically arranged in the second direction.

[0031] In the present embodiment, two receiving grooves are provided on the bottom plate and symmetrically arranged in the second direction, which is simple in structure and reasonable in arrangement, and can well meet the needs of the symmetric arrangement of the heat exchange pipes on the bottom plate.

[0032] According to the box of the second aspect of the present application, the bottom plate of the first aspect of the present application is provided.

[0033] According to the box of the present application, by providing the bottom plate of the above-mentioned first aspect, by providing multiple joint plates, the adjacent joint plates are welded and connected to form a weld, and the receiving groove is formed on the multiple joint plates and intersects with any one weld less than or equal to twice, so that the joint surface structure of the joint plate is simple and has good structural strength, thereby making the positioning of the multiple joint plates more convenient and easy when the joint plates are jointed, and the welding quality of the multiple joint plates is better and more stable when the joint plates are welded, so that the bottom plate can have good dimensional accuracy and air tightness.

[0034] The battery according to the third aspect of the application comprises the heat exchange pipe and the box according to the second aspect of the application, the heat exchange pipe is arranged in the accommodating groove, and the heat exchange pipe is bent and extends along the extension direction of the accommodating groove.

[0035] According to the battery of the application, by arranging the box of the second aspect, by arranging the plurality of splicing plates, the adjacent splicing plates are welded and connected to form the weld, the accommodating groove is formed on the plurality of splicing plates and intersects with any one of the welds less than or equal to twice, the splicing surface of the splicing plate is simple in structure and has good structural strength, so that the positioning of the plurality of splicing plates is more convenient and easy when splicing, the welding quality of the plurality of splicing plates is better and more stable when welding, and thus the bottom plate can have good dimensional accuracy and air tightness.

[0036] The power utilization device according to the fourth aspect of the application comprises the battery according to the third aspect of the application.

[0037] According to the power utilization device of the application, by arranging the battery of the third aspect, by arranging the plurality of splicing plates, the adjacent splicing plates are welded and connected to form the weld, the accommodating groove is formed on the plurality of splicing plates and intersects with any one of the welds less than or equal to twice, the splicing surface of the splicing plate is simple in structure and has good structural strength, so that the positioning of the plurality of splicing plates is more convenient and easy when splicing, the welding quality of the plurality of splicing plates is better and more stable when welding, and thus the bottom plate can have good dimensional accuracy and air tightness.

[0038] Additional aspects and advantages of the application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0039] Fig. 1 is a schematic view of a power utilization device according to an embodiment of the application;

[0040] Fig. 2 is a schematic view of a bottom plate according to an embodiment of the application;

[0041] Fig. 3 is a schematic view of a bottom plate and a heat exchange pipe according to an embodiment of the application.

[0042] Reference signs: 10, bottom plate; 101, groove segment; 102, weld; 11, splicing plate; 12, accommodating groove; 121, first groove part; 1211, first segment; 1212, second segment; 1213, third segment; 122, second groove part; 1221, fourth segment; 1222, fifth segment; 20, heat exchange pipe; 100, battery; 200, controller; 300, motor; 1000, power utilization device. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including," "comprising," "having" and "with" and variations thereof in the specification and throughout the claims are intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. The terms "comprise," "comprising," "comprises," and "comprising" when used in this specification, specify the presence of stated features, integers, steps, components, elements, or limitations, but do not preclude the presence or addition of one or more other features, integers, steps, components, elements, limitations, or groups thereof.

[0045] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0046] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two).

[0048] In the description of the embodiments of the present application, the technical terms "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0049] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system such as hydroelectric power station, thermal power station, wind power station and solar power station, but also widely applied to electric vehicles such as electric bicycle, electric motorcycle, electric automobile and electric traffic tools, military equipment and aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing. Among the currently used power batteries, the proportion of lithium ion battery is also increasing.

[0051] In the production process of the battery, the bottom plate of the battery box body is formed with a groove structure matched with the heat exchange pipe. The bottom plate can be manufactured by means of tailor welding. Specifically, the bottom plate can be formed by welding a plurality of plate materials. Since the heat exchange pipe is a continuous pipe structure, the groove structure formed on the bottom plate is also formed as a continuous groove structure. The groove extends from one plate material to another plate material through the tailor welding position, so that the corresponding groove structures on the adjacent two plate materials are aligned at the tailor welding position during splicing to form a continuous and consistent groove structure.

[0052] In the related art, the number of groove structures on the plate material passing through the welding position is large, so that the splicing surface of the tailor welding position is relatively complex. During splicing, a large number of positions need to be aligned at the same time, so that the control difficulty of the plate material size of the bottom plate is large, the splicing precision requirement is high, and the splicing is difficult. After the tailor welding of the bottom plate is completed, the corresponding groove structures on the two plate materials at the tailor welding position are easy to deviate and form a gap, so that the air tightness of the bottom plate is poor.

[0053] Since the structural strength of the bottom plate at the groove structure position is weak, and the number of groove structures on the plate material passing through the welding position is large, the structural strength of the splicing surface of the plate material at the tailor welding position is poor, so that the welding strength of the plate material during welding is insufficient, the quality of the formed welding seam is poor, and the overall structural stability of the tailor welded bottom plate is poor. After the heat exchange pipe is assembled and fixed in the groove structure, the receiving groove is easy to crack at the welding seam under the action of vibration impact caused by the impact of the heat exchange pipe or the flow of the cooling liquid in the heat exchange pipe, and the risk of air tightness failure of the bottom plate is large.

[0054] Based on the above consideration, in order to reduce the complexity of the splicing surface of the bottom plate at the splicing position, improve the welding strength and quality, and make the bottom plate have good air tightness and structural stability, the embodiment proposes a bottom plate. By reducing the number of groove structures on the plate material passing through the splicing position to less than or equal to twice, the splicing surface structure of the plate material at the splicing position is simpler and has better structural strength, so that the plate material is more convenient and easy to splice, and the bottom plate can have better welding strength and welding quality during tailor welding. The overall structural stability of the bottom plate is better and the air tightness is better.

[0055] The bottom plate disclosed by the embodiments of the present application can be used in a battery box, which provides assembly space for heat exchange pipes and battery monomers in the battery and provides good protection. The battery can be used as a power supply for a power consumption device, or used as an energy storage element in various energy storage systems. The power consumption device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0056] For example, as shown in FIG. 1, which is a schematic diagram of a power consumption device 1000 according to an embodiment of the present application, the power consumption device 1000 can be a vehicle, which can be a fuel car, a gas car, or a new energy car. The new energy car can be a pure electric car, a hybrid car, or a range extended car, etc. The vehicle is internally provided with a battery 100, which can be arranged at the bottom, the head, or the tail of the vehicle. The battery 100 can be used for power supply of the vehicle, for example, the battery 100 can be used as an operating power supply of the vehicle. The vehicle can further include a controller 200 and a motor 300, the controller 200 is used to control the battery 100 to supply power to the motor 300, for example, for the power consumption demand of the vehicle during starting, navigation, and driving.

[0057] In some embodiments of the present application, the battery 100 can not only be used as an operating power supply of the vehicle, but also be used as a driving power supply of the vehicle, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle.

[0058] The bottom plate 10 according to the first aspect of the present application is described below with reference to FIGS. 1-3. FIG. 1 is a schematic diagram of a power consumption device 1000 according to an embodiment of the present application; FIG. 2 is a schematic diagram of a bottom plate 10 according to an embodiment of the present application; and FIG. 3 is a schematic diagram of the bottom plate 10 and a heat exchange pipe 20 according to an embodiment of the present application.

[0059] As shown in FIG. 2, the bottom plate 10 according to the first aspect of the present application is provided with a receiving groove 12 on one side in the thickness direction, and the receiving groove 12 is adapted to accommodate the heat exchange pipe 20. The bottom plate 10 includes a plurality of spliced plates 11 arranged in a first plane, and two adjacent spliced plates 11 are welded and connected to form a weld 102. The receiving groove 12 is formed on the plurality of spliced plates 11 and extends by bending on the plurality of spliced plates 11. The receiving groove 12 intersects with any one weld 102 less than or equal to twice.

[0060] The bottom plate 10 can be a copper plate, an aluminum plate, or the like, which is a metal plate having good heat conduction effect. In this embodiment, the bottom plate 10 is provided with a receiving groove 12 on one side in the thickness direction, and the receiving groove 12 is used to accommodate the heat exchange pipe 20. The receiving groove 12 can be formed by recessing the surface of the bottom plate 10 on one side in the thickness direction. The opening of the receiving groove 12 faces the outside in the thickness direction of the bottom plate 10. The heat exchange pipe 20 is arranged in the receiving groove 12. The heat exchange pipe 20 can be in close contact with the bottom plate 10 to transfer heat. The heat exchange pipe 20 and the bottom plate 10 are arranged relatively compactly in the thickness direction of the bottom plate 10, so as to facilitate the assembly of the heat exchange pipe 20 and the bottom plate 10 in the battery 100.

[0061] The spliced plates 11 can be rectangular plates, triangular plates, or the like, which are plate materials with regular shapes. The spliced plates 11 can also be plate materials with irregular shapes. The shapes of the plurality of spliced plates 11 can be the same or different. The sizes of the plurality of spliced plates 11 can also be the same or different, as long as the forming and splicing needs of the bottom plate 10 are met.

[0062] In this embodiment, the plurality of spliced plates 11 are arranged in the first plane. The plurality of spliced plates 11 can be arranged side by side in the same direction. The plurality of spliced plates 11 can also be arranged in an array in multiple directions. The plurality of spliced plates 11 are connected by welding to form a whole bottom plate 10. Two adjacent spliced plates 11 are connected by welding at the splicing position and form a weld 102. The number of spliced plates 11 can be two, three, four, five, six, or the like. The number of spliced plates 11 can be reasonably selected according to the splicing needs.

[0063] The receiving groove 12 is formed on the plurality of spliced plates 11 and extends in a bent manner on the plurality of spliced plates 11. Each spliced plate 11 has a part of the receiving groove 12 structure. After the plurality of spliced plates 11 are spliced to form a whole bottom plate 10, the receiving groove 12 forms a complete groove structure. The receiving groove 12 extends in a bent manner on the plurality of spliced plates 11. Specifically, the receiving groove 12 on each spliced plate 11 can extend in a bent manner on the spliced plate 11. In the whole bottom plate 10 structure formed by welding the plurality of spliced plates 11, the receiving groove 12 can extend in a bent manner on the bottom plate 10.

[0064] When the receiving groove 12 extends in a bent manner on the bottom plate 10, the receiving groove 12 intersects with the weld 102, that is, the receiving groove 12 can continue to extend from one spliced plate 11 to another spliced plate 11 through the weld 102, so as to form a continuous receiving groove 12 on the bottom plate 10.

[0065] It can be understood that when the plurality of splicing plates 11 are spliced and welded, the splicing plates 11 need to align the receiving grooves 12 extending on the two adjacent splicing plates 11, so that the splicing plates 11 form a continuous and consistent receiving groove 12 structure at the weld 102 after welding. In the embodiment, the number of times that the receiving groove 12 intersects with any one weld 102 is set to be less than or equal to two, which can well limit the number of times that the receiving groove 12 needs to be aligned at the weld 102 when the splicing plates 11 are spliced and welded, so that the plurality of splicing plates 11 can be more conveniently and easily spliced and assembled and spliced and welded when spliced.

[0066] In the embodiment, the number of times that the receiving groove 12 intersects with any one weld 102 is set to be less than or equal to two, so that the shape of the splicing surface is relatively simple, thereby making the structural strength of the splicing surface better and the structure more stable, so that the size and forming position of the receiving groove 12 at the splicing surface on the splicing plate 11 can be more accurate to some extent, and the splicing plates 11 are more easily and accurately aligned when the adjacent splicing plates 11 are spliced and welded, so that the size accuracy of the overall structure of the bottom plate 10 is better after splicing and welding.

[0067] In the embodiment, the structural strength of the splicing surface is better and more stable, so that the splicing plates 11 can have good welding strength when welded, thereby making the quality of the weld 102 of the splicing plate 11 better, and reducing the porosity caused by poor welding at the splicing surface, so that the overall structure of the bottom plate 10 has good air tightness and is more stable.

[0068] According to the bottom plate 10 of the embodiment of the application, a plurality of splicing plates 11 are arranged, the adjacent splicing plates 11 are welded and connected to form a weld 102, the receiving groove 12 is formed on the plurality of splicing plates 11 and the number of times that the receiving groove 12 intersects with any one weld 102 is less than or equal to two, so that the splicing surface of the splicing plate 11 at the weld 102 has a simple structure and good structural strength, thereby making the positioning of the plurality of splicing plates 11 more convenient and easy when spliced, and the welding quality of the plurality of splicing plates 11 more stable when welded, so that the bottom plate 10 can have good size accuracy and air tightness.

[0069] In some embodiments of the application, as shown in FIG. 2, the plurality of splicing plates 11 can be arranged in sequence along a first direction (e.g., the front-rear direction shown in FIG. 2), and the weld 102 between the two adjacent splicing plates 11 extends along a second direction (e.g., the left-right direction shown in FIG. 2), and the first direction intersects with the second direction.

[0070] In the embodiment, the first direction intersects with the second direction, which means that the first direction and the second direction are arranged at an angle, for example, the first direction can be perpendicular to the second direction, and the second direction can also be arranged at an acute angle or an obtuse angle with the second direction.

[0071] The plurality of spliced plates 11 are arranged in sequence along the first direction, and the welding seam 102 extends along the second direction, so that the structure is simple, splicing is convenient, and the bottom plate 10 is conveniently formed by splicing and welding.

[0072] In an embodiment of the present application, as shown in FIG. 2, the accommodating groove 12 can include a plurality of groove segments 101, the plurality of groove segments 101 are sequentially connected, and any one groove segment 101 intersects with the welding seam 102 or is arranged at intervals from the welding seam 102.

[0073] In the embodiment, a plurality of groove segments 101 are arranged, for example, the groove segments 101 can be three, five, six, seven, nine, fifteen, etc., the plurality of groove segments 101 are sequentially connected to form a structure of the bending extending accommodating groove 12, the groove segment 101 can be a straight line segment extending in a direction, for example, the groove segment 101 can extend along the first direction, and the groove segment 101 can extend along the second direction. The two adjacent groove segments 101 are arranged at an angle, which means that the two adjacent groove segments 101 are arranged at an acute angle, an obtuse angle or a right angle.

[0074] In the embodiment, any one groove segment 101 intersects with the welding seam 102 or is arranged at intervals from the welding seam 102, the groove segment 101 can intersect with the welding seam 102, for example, the groove segment 101 can extend along the first direction, and the groove segment 101 can be formed on two adjacent spliced plates 11, for the same welding seam 102, the number of groove segments 101 intersecting with the welding seam 102 in the plurality of groove segments 101 can be one or two, so that the number of times that the accommodating groove 12 intersects with any one welding seam 102 is less than or equal to two.

[0075] The groove segment 101 is arranged at intervals from the welding seam 102, specifically, the groove segment 101 and the welding seam 102 have a certain interval in the extending range of the groove segment 101, when the groove segment 101 is formed on the spliced plate 11, the groove segment 101 can be arranged away from the splicing surface of the spliced plate 11 at the welding seam 102, and the groove segment 101 can be arranged in parallel with the welding seam 102.

[0076] The two adjacent groove sections 101 are arranged at an angle in the embodiment, which can meet the arrangement requirement of the accommodating groove 12, and the accommodating groove 12 can be conveniently formed on the plurality of splicing plates 11, and the structure is simple and convenient to arrange. It can be understood that the thickness of the splicing plate 11 at the accommodating groove 12 is thin, so that the structural strength of the splicing plate 11 at the accommodating groove 12 is weak, and the accommodating groove 12 has a certain groove width. When the accommodating groove 12 is formed on the splicing plate 11, the extension area of the accommodating groove 12 forms a weak structure area of the splicing plate 11. When the groove section 101 extends along the extension direction of the weld 102 and is formed at the weld 102 of the splicing plate 11, the overlapping area of the weld 102 and the accommodating groove 12 is large, so that the structural strength of the splicing plate 11 at the weld 102 is greatly reduced, and the welding strength of the splicing plate 11 during welding is insufficient, and the probability of poor welding is high.

[0077] The groove section 101 and the weld 102 are arranged at an angle or are arranged at intervals in the embodiment, which can well reduce the probability that the weld 102 and the groove section 101 overlap, so that the weld 102 can have a small groove structure, thereby making the splicing surface of the splicing plate 11 at the weld 102 have good structural strength, and further making the welding strength and welding quality of the splicing plate 11 well guaranteed.

[0078] In some examples of the present application, referring to FIG. 2, at least one groove section 101 can intersect the weld 102, and the included angle between the groove section 101 and the weld 102 is greater than 45° and less than 135°.

[0079] The included angle between the groove section 101 and the weld 102 is limited to greater than 45° and less than 135° in the embodiment, for example, as shown in FIG. 2, the included angle α in the figure represents the included angle between the groove section 101 and the weld 102, and the included angle α can be 46°, 48°, 50°, 51°, 54°, 68°, 90°, 100°, 120°, 125°, 130°, 132°, 134°, etc. Alternatively, the included angle between the groove section 101 and the weld 102 can be 90°.

[0080] It can be understood that the non-accommodating groove 12 area of the splicing plate 11 is protruded relative to the bottom of the accommodating groove 12, and the plurality of groove sections 101 of the accommodating groove 12 can cooperate with the weld 102 to separate the protruding part on the splicing plate 11 into a plurality of parts. When the groove section 101 intersects the weld 102, the included angle between the groove section 101 and the weld 102 is small, so that the protruding part separated by the cooperation of the groove section 101 and the weld 102 has a small structure size at the weld 102, thereby making the structural strength of the protruding part at the weld 102 poor, and further making the structural strength of the splicing plate 11 at the weld 102 further reduced, and the welding structural strength of the splicing plate 11 reduced.

[0081] In the embodiment, the angle between the groove segment 101 and the weld seam 102 is limited to be greater than 45° and less than 135°, so that the angle between the groove segment 101 and the weld seam 102 is in a more appropriate range, the splicing surface of the splicing plate 11 at the weld seam 102 can maintain good structural strength, so that the splicing plate 11 can have good welding structural strength, and the bottom plate 10 can have good splicing effect.

[0082] In some examples of the present application, as shown in FIG. 2, at least one groove segment 101 can be arranged spaced apart from the weld seam 102, and the spacing between the groove segment 101 and the adjacent weld seam 102 is greater than or equal to 5 mm.

[0083] In the embodiment, at least one groove segment 101 is arranged spaced apart from the weld seam 102, that is, one or more groove segments 101 in the plurality of groove segments 101 can be arranged spaced apart from the weld seam 102. The spacing between the groove segment 101 and the adjacent weld seam 102 is greater than or equal to 5 mm, for example, as shown in FIG. 2, the spacing L between the groove segment 101 and the weld seam 102 is shown in the figure, and the spacing L between the groove segment 101 and the adjacent weld seam 102 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 15 mm, etc.

[0084] In the embodiment, the spacing between the spaced-apart groove segment 101 and the weld seam 102 is limited to be greater than or equal to 5 mm, so that the splicing plate 11 has sufficient plate body structural size between the groove segment 101 and the weld seam 102, so that the plate body of the splicing plate 11 between the groove segment 101 and the weld seam 102 has good structural strength, and specifically, the splicing surface of the splicing plate 11 at the weld seam 102 can have good structural strength, so that the splicing plate 11 can be well spliced and aligned and welded, and the overall structure of the bottom plate 10 is more stable.

[0085] In some examples of the present application, as shown in FIG. 2, the two groove segments 101 connected in sequence can be connected by an arc.

[0086] The two groove segments 101 connected in sequence are connected by an arc, so that the extension direction of the groove segments 101 connected in sequence is changed. The angle of the arc can be set according to the arrangement and extension needs of the groove segment 101, for example, the arc can be a sixth of a circle, the arc can be a quarter of a circle, the arc can be a half of a circle, etc.

[0087] In the embodiment, the two groove segments 101 connected in sequence are connected by an arc, which is simple in structure and convenient to connect, and well meets the arrangement needs of the accommodating groove 12. Of course, the two adjacent groove segments 101 can also be connected by a right angle, and the adjacent groove segments 101 can be connected in the most appropriate connection mode according to needs.

[0088] In one example of the present application, as shown in FIG. 2, the circular arc segment connected between two groove segments 101 in sequence can be arranged apart from the weld 102.

[0089] The circular arc segment is arranged apart from the weld 102, specifically, the circular arc segment is arranged apart from the weld 102 at one end in the first direction, and the groove segment 101 extending along the first direction is connected to another groove segment 101 through the circular arc segment after extending from one panel 11 to another panel 11 through the weld 102.

[0090] In the present embodiment, the circular arc segment is arranged apart from the weld 102, which can maintain good structural strength between the circular arc segment and the weld 102, so that the panel 11 has good structural strength at the weld 102, and thus the plurality of panels 11 can have good tailor-welding effect.

[0091] In some embodiments of the present application, as shown in FIG. 2, the receiving groove 12 can include a first groove portion 121 and a second groove portion 122, the first groove portion 121 is bent and extended to be a U-shaped opening on one side in the second direction, and the second groove portion 122 is arranged in the U-shaped region and bent and extended, one end of the second groove portion 122 is connected to one end of the first groove portion 121.

[0092] In the present embodiment, the receiving groove 12 is provided with the first groove portion 121 and the second groove portion 122, the first groove portion 121 is U-shaped and forms an opening on one side in the second direction, the second groove portion 122 is arranged in the U-shaped region of the first groove portion 121 and connected to one end of the first groove portion 121, and the first groove portion 121 and the second groove portion 122 cooperate to form a continuous groove structure bent and extended on the bottom plate 10.

[0093] In the present embodiment, the receiving groove 12 is provided with the first groove portion 121 and the second groove portion 122, the first groove portion 121 is U-shaped, and the second groove portion 122 is bent and extended in the U-shaped region, so that the overall structure of the receiving groove 12 is arranged more compactly and reasonably on the bottom plate 10, and the arrangement of the heat exchange pipe 20 on the bottom plate 10 is satisfied.

[0094] In some embodiments of the present application, as shown in FIG. 2, the first groove portion 121 can include a first segment 1211, a second segment 1212, and a third segment 1213, the first segment 1211 extends along the first direction, the second segment 1212 extends along the second direction and is connected to one end of the first segment 1211, and the third segment 1213 extends along the second direction and is connected to the other end of the first segment 1211, the first segment 1211, the second segment 1212, and the third segment 1213 cooperate to define a U-shaped region, wherein the first segment 1211 intersects with at least one weld 102, and the second segment 1212 and the third segment 1213 are arranged apart from the weld 102.

[0095] The first groove portion 121 in the embodiment is provided with a first section 1211, a second section 1212 and a third section 1213. The first section 1211 extends in the first direction. One end of the first section 1211 is connected to the first section 1211, and the other end is connected to the third section 1213. Specifically, the first section 1211 can be connected to the second section 1212 through a circular arc, and the first section 1211 can be connected to the third section 1213 through a circular arc.

[0096] The first section 1211 intersects at least one weld 102. The first section 1211 can intersect one, two or three welds 102, etc. The second section 1212 and the third section 1213 are arranged at intervals from the weld 102. The second section 1212 and the third section 1213 are formed on different joint plates 11. The second section 1212 is arranged at intervals from the adjacent weld 102. The third section 1213 is arranged at intervals from the adjacent weld 102.

[0097] In the embodiment, the first groove portion 121 is provided with the first section 1211, the second section 1212 and the third section 1213. The first section 1211 cooperates with the second section 1212 and the third section 1213 to define a U-shaped region. The structure is simple and convenient to arrange. The first section 1211 intersects at least one weld 102, which can meet the arrangement needs of the accommodation groove 12 on the bottom plate 10. The second section 1212 and the third section 1213 are arranged at intervals from the weld 102, which can well reduce the weakening of the structural strength of the joint plate 11 at the weld 102 by the accommodation groove 12, so that the welding effect is better when the joint plate 11 is welded.

[0098] In some embodiments of the present application, as shown in FIG. 2, the second groove portion 122 can include a fourth section 1221 and a fifth section 1222. A plurality of fourth sections 1221 extend in the second direction and are arranged at intervals in the first direction. The fifth section 1222 extends in the first direction. In the first direction, the plurality of fourth sections 1221 are sequentially connected by the fifth section 1222. Among them, the plurality of fourth sections 1221 are arranged at intervals from the weld 102. Part of the plurality of fifth sections 1222 intersects the weld 102.

[0099] In the embodiment, the second groove portion 122 includes the fourth section 1221 and the fifth section 1222. A plurality of fourth sections 1221 extend in the second direction and are arranged at intervals in the first direction. The fourth section 1221 can be arranged parallel to the weld 102. The fifth section 1222 extends in the first direction. Adjacent two fourth sections 1221 are connected by the fifth section 1222. The plurality of fourth sections 1221 are sequentially connected by the plurality of fifth sections 1222. Part of the plurality of fifth sections 1222 intersects the weld 102. Specifically, the plurality of fifth sections 1222 that intersect the weld 102 correspond to the plurality of welds 102 one by one.

[0100] The second groove part 122 is provided as including a plurality of fourth segments 1221 and a plurality of fifth segments 1222 in the embodiment, the plurality of fourth segments 1221 are sequentially connected through the plurality of fifth segments 1222, the structure is simple, the arrangement is reasonable, and the arrangement needs of the containing groove 12 on the bottom plate 10 can be well met, the fourth segments 1221 are arranged at intervals from the weld 102, the weakening of the structural strength of the spliced plate 11 at the weld 102 by the containing groove 12 can be better reduced, so that the spliced surface of the spliced plate 11 at the weld has good welding strength, and the butt welding effect of the plurality of spliced plates 11 is better. Part of the plurality of fifth segments 1222 intersects the weld 102, the arrangement and extension needs of the containing groove 12 on the plurality of spliced plates 11 can be met, and the containing groove 12 cooperates with the first groove part 121 to make the intersection number of the containing groove 12 with each weld 102 less than or equal to two.

[0101] In some embodiments of the application, as shown in FIG. 2, the spacing between the first segment 1211 and the fifth segment 1222 can be greater than or equal to 13 mm.

[0102] For example, the spacing between the first segment 1211 and the fifth segment 1222 can be 13 mm, 14 mm, 14.5 mm, 17 mm, etc.

[0103] In the embodiment, the spacing between the first segment 1211 and the fifth segment 1222 is greater than or equal to 13 mm, which can make the plate body structure of the bottom plate 10 between the first segment 1211 and the fifth segment 1222 have good structural strength, and the overall structure of the bottom plate 10 formed with the containing groove 12 is more stable and reliable, so that the welding effect is better when the plurality of spliced plates 11 are welded.

[0104] In some embodiments of the application, as shown in FIG. 2, the number of containing grooves 12 can be multiple, and the plurality of containing grooves 12 are arranged at intervals in the second direction.

[0105] In the embodiment, the number of containing grooves 12 is set to multiple, and the plurality of containing grooves 12 are arranged at intervals in the second direction, for example, the containing groove 12 can be provided with two, three, four, five, six, etc., and the plurality of containing grooves 12 are arranged at intervals in the second direction.

[0106] In the embodiment, the plurality of containing grooves 12 are provided, which can meet the needs of containing and arranging the heat exchange pipes 20 on the bottom plate 10, and the structure is simple and convenient to arrange.

[0107] In one embodiment of the application, as shown in FIG. 2, the number of containing grooves 12 can be two, and the two containing grooves 12 are symmetrically arranged in the second direction.

[0108] The number of the accommodating grooves 12 in the embodiment is set to two and the two accommodating grooves 12 are symmetrically arranged in the second direction, the number of the groove segments 101 in the two accommodating grooves 12 is the same and the extending direction of the groove segments 101 is the same, and the accommodating grooves 12 on each of the joint plates 11 are symmetrically arranged in the second direction.

[0109] The two accommodating grooves 12 are arranged on the bottom plate 10 and the two accommodating grooves 12 are symmetrically arranged in the second direction in the embodiment, the structure is simple, the arrangement is reasonable, and the needs of the symmetric arrangement of the heat exchange pipes 20 on the bottom plate 10 can be well met.

[0110] The box according to the second aspect of the embodiment of the application is described below with reference to FIG. 1-3.

[0111] As shown in FIG. 1-3, the box according to the embodiment of the application comprises the bottom plate 10 according to the first aspect of the embodiment of the application.

[0112] The other constitution and operation of the box according to the embodiment of the application are known to those skilled in the art and are not described in detail here.

[0113] The box according to the embodiment of the application is provided with the bottom plate 10 of the above-mentioned first aspect of the embodiment, provided with a plurality of joint plates 11, the adjacent joint plates 11 are welded and connected and form the weld 102, the accommodating grooves 12 are formed on the plurality of joint plates 11 and the number of the intersections with any one of the welds 102 is less than or equal to two, the joint surface structure of the joint plates 11 at the welds 102 is simple and has good structural strength, so that the positioning of the joint plates 11 is more convenient and easier when the joint plates 11 are jointed, the welding quality is better and more stable when the joint plates 11 are welded, so that the bottom plate 10 can have good dimensional accuracy and air tightness.

[0114] The battery 100 according to the third aspect of the embodiment of the application is described below with reference to FIG. 1-3.

[0115] As shown in FIG. 1-3, the battery 100 according to the embodiment of the application comprises the heat exchange pipe 20 and the box according to the second aspect of the embodiment of the application, the heat exchange pipe 20 is arranged in the accommodating groove 12, and the heat exchange pipe 20 is bent and extends along the extending direction of the accommodating groove 12.

[0116] The other constitution and operation of the battery 100 according to the embodiment of the application are known to those skilled in the art and are not described in detail here.

[0117] According to the battery 100 of the embodiment of the present application, by arranging the box of the second aspect, by arranging the plurality of splicing plates 11, the adjacent splicing plates 11 are welded and connected to form the weld 102, the accommodating groove 12 is formed on the plurality of splicing plates 11 and intersects with any one of the welds 102 less than or equal to twice, the splicing surface of the splicing plate 11 at the weld 102 has a simple structure and good structural strength, so that the positioning of the plurality of splicing plates 11 is more convenient and easy when splicing, the welding quality of the plurality of splicing plates 11 is better and more stable when welding, so that the bottom plate 10 can have good dimensional accuracy and air tightness.

[0118] The power consuming device 1000 according to an embodiment of the present application will be described below with reference to FIGS. 1-3.

[0119] As shown in FIGS. 1-3, the power consuming device 1000 according to the embodiment of the present application comprises the battery 100 according to the third aspect of the present application.

[0120] Other configurations and operations of the power consuming device 1000 according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail here.

[0121] According to the power consuming device 1000 of the embodiment of the present application, by arranging the battery 100 of the third aspect, by arranging the plurality of splicing plates 11, the adjacent splicing plates 11 are welded and connected to form the weld 102, the accommodating groove 12 is formed on the plurality of splicing plates 11 and intersects with any one of the welds 102 less than or equal to twice, the splicing surface of the splicing plate 11 at the weld 102 has a simple structure and good structural strength, so that the positioning of the plurality of splicing plates 11 is more convenient and easy when splicing, the welding quality of the plurality of splicing plates 11 is better and more stable when welding, so that the bottom plate 10 can have good dimensional accuracy and air tightness.

[0122] The power consuming device 1000 according to an embodiment of the present application will be described below with reference to FIGS. 1-3.

[0123] As shown in FIGS. 1-3, the power consuming device 1000 comprises the battery 100, the motor 300 and the controller 200, the controller 200 controls the battery 100 to supply power to the motor 300. The battery 100 comprises the heat exchange pipe 20 and the box, the box is provided with the bottom plate 10.

[0124] The bottom plate 10 is provided with the accommodating groove 12, and the heat exchange pipe 20 is arranged in the accommodating groove 12 and extends along the extension direction of the accommodating groove 12.

[0125] The bottom plate 10 includes four spliced plates 11, the bottom plate 10 is formed with receiving grooves 12 on one side in the thickness direction, the four spliced plates 11 are arranged in the first plane and sequentially arranged along the first direction, the adjacent spliced plates 11 are welded and connected to form three welds 102 extending along the second direction, the first direction is perpendicular to the second direction.

[0126] The receiving groove 12 is provided with two receiving grooves 12, and the two receiving grooves 12 are symmetrically arranged in the second direction. The receiving groove 12 includes a first groove portion 121 and a second groove portion 122, the first groove portion 121 is U-shaped and has three groove segments 101, the three groove segments 101 are respectively a first segment 1211, a second segment 1212 and a third segment 1213, the first segment 1211 extends along the first direction and perpendicularly intersects with the three welds 102, and the second segment 1212 and the third segment 1213 are respectively formed on the two spliced plates 11 on both sides of the bottom plate 10 in the first direction.

[0127] The second groove portion 122 extends in the U-shaped region and includes twenty-one groove segments 101, ten groove segments 101 are respectively formed as fourth segments 1221, and eleven groove segments 101 are respectively formed as fifth segments 1222, the fourth segments 1221 extend along the second direction, the plurality of fourth segments 1221 are arranged at intervals in the first direction, the adjacent fourth segments 1221 are connected by the fifth segments 1222, the fifth segments 1222 extend along the first direction, the second groove portion 122 is provided with the fifth segments 1222 on one side in the first direction, the fifth segments 1222 are connected with the third segments 1213, the second groove portion 122 is provided with the fifth segments 1222 on the other side in the first direction, the fifth segments 1222 extend away from the second groove portion 122 along the first direction and perpendicularly intersect with one weld 102, and the two fifth segments 1222 perpendicularly intersect with the other two welds 102.

[0128] The embodiment sets the plurality of spliced plates 11, the adjacent spliced plates 11 are welded and connected to form the welds 102, the receiving grooves 12 are formed on the plurality of spliced plates 11 and intersect with any one of the welds 102 less than or equal to twice, so that the spliced plate 11 has a simple spliced surface structure at the weld 102 and has good structural strength, so that the plurality of spliced plates 11 is more convenient and easy to position when spliced, the welding quality is better and more stable when the plurality of spliced plates 11 is welded, so that the bottom plate 10 can have good dimensional accuracy and air tightness, so that the bottom plate 10 can stably and reliably cooperate with the heat exchange pipe 20 during use.

[0129] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A backplane, wherein, The bottom plate is provided with a receiving groove (12) on one side in the thickness direction, the receiving groove (12) is suitable for accommodating a heat exchange pipe (20), the bottom plate comprises: A plurality of spliced plates (11), a plurality of the spliced plates (11) are arranged in a first plane, and two adjacent spliced plates (11) are welded and connected to form a weld (102); The receiving groove (12) is formed on the plurality of spliced plates (11) and extends on the plurality of spliced plates (11), and the receiving groove (12) intersects with any one of the welds (102) less than or equal to twice.

2. The base plate of claim 1, wherein, The plurality of spliced plates (11) are sequentially arranged along a first direction, and the weld (102) between two adjacent spliced plates (11) extends along a second direction, and the first direction intersects with the second direction.

3. The base plate of claim 2, wherein, The receiving groove (12) comprises a plurality of groove segments (101), the plurality of groove segments (101) are sequentially connected, two adjacent groove segments (101) are arranged at an angle, and any one of the groove segments (101) intersects with or is spaced apart from the weld (102).

4. The base plate of claim 3, wherein, At least one of the groove segments (101) intersects with the weld (102) at an angle greater than 45° and less than 135°.

5. The base plate of claim 3, wherein, At least one of the groove segments (101) is spaced apart from the weld (102), and the spacing between the groove segment (101) and the adjacent weld (102) is greater than or equal to 5 mm.

6. The base plate of any one of claims 3-5, wherein, Two groove segments (101) that are sequentially connected are connected by an arc.

7. The floor panel according to any of claims 1-6, wherein, The receiving groove (12) comprises: A first groove portion (121) that extends in a U shape with one side open in a second direction; A second groove portion (122) that is arranged in the U-shaped region and extends in a bent manner, one end of the second groove portion (122) is connected to one end of the first groove portion (121).

8. The base plate of claim 7, wherein, The first groove portion (121) comprises: A first segment (1211) that extends in a first direction; A second segment (1212) that extends in a second direction and is connected to one end of the first segment (1211); A third segment (1213) that extends in the second direction and is connected to the other end of the first segment (1211) at one end, and the first segment (1211), the second segment (1212) and the third segment (1213) cooperatively define the U-shaped region, Wherein, the first segment (1211) intersects with at least one of the welds (102), the second segment (1212) and The third segment (1213) are both spaced apart from the weld (102).

9. The base plate of claim 7, wherein, The second groove portion (122) comprises: a fourth segment (1221) and a fifth segment (1222), a plurality of the fourth segments (1221) extend in the second direction and are spaced apart in a first direction, the fifth segment (1222) extends in the first direction, and in the first direction, a plurality of the fourth segments (1221) are sequentially connected through the fifth segment (1222), Among them, a plurality of the fourth segments (1221) are arranged at intervals with the weld (102), and a part of a plurality of the fifth segments (1222) intersect with the weld (102).

10. The floor panel according to any of claims 1-9, wherein, The number of the accommodation grooves (12) is multiple, and multiple accommodation grooves (12) are arranged at intervals in the second direction.

11. The base plate of claim 10, wherein, The number of the accommodation grooves (12) is two, and two accommodation grooves (12) are arranged symmetrically in the second direction.

12. A case, wherein, The bottom plate according to any one of claims 1-11.

13. A battery, wherein, The bottom plate according to any one of claims 1-11. The heat exchange pipe (20) is arranged in the accommodation groove (12), and the heat exchange pipe (20) extends along the extension direction of the accommodation groove (12) and is bent.

14. An electrical device, comprising: The battery according to claim 13. The battery according to claim 13.

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