CN221041396U - Box, battery and power consumption device - Google Patents

Abstract

The application discloses a box body, a battery and an electric device. The frame body comprises a first beam body, and the frame body is provided with an accommodating space for accommodating the battery cells. The heat exchange assembly is connected to the frame body and comprises a first heat exchange plate, and the first heat exchange plate is arranged towards the frame body. The heat insulation component is arranged between the first heat exchange plate and the first beam body, and the heat conductivity coefficient of the heat insulation component is smaller than that of the first heat exchange plate. The heat insulation assembly is arranged between the first heat exchange plate and the first beam body, so that the heat transfer speed between the heat exchange assembly and the first beam body is reduced, the heat loss of the heat exchange assembly is reduced, the heat insulation performance of the heat exchange assembly is improved, and the heat exchange efficiency of the battery is improved.

Description

Box, battery and power consumption device

Technical Field

The application relates to the field of batteries, in particular to a box body, a battery and an electric device.

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, energy storage systems, and the like. The battery cells may include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium ion battery cells, sodium ion battery cells, secondary alkaline zinc-manganese battery cells, and the like.

The operating efficiency of the battery is greatly affected by the ambient temperature, and for example, in case of excessively high or low temperature, the charge-discharge efficiency of the battery and the effective capacity of the battery are greatly reduced. Therefore, a heat exchange assembly is typically provided in the battery to regulate the operating temperature of the battery. How to increase the heat exchange efficiency of a heat exchange assembly is also one of the problems studied in the art.

Disclosure of utility model

In view of the above problems, the application provides a box, a battery and an electric device, which can reduce the heat loss of a heat exchange assembly and improve the heat preservation performance of the heat exchange assembly, thereby improving the heat exchange efficiency of the battery.

In a first aspect, the application provides a box body, which comprises a frame body, a heat exchange assembly and a heat insulation assembly. The frame body comprises a first beam body, and the frame body is provided with an accommodating space for accommodating the battery cells. The heat exchange assembly is connected to the frame body and comprises a first heat exchange plate, and the first heat exchange plate is arranged towards the frame body. The heat insulation component is arranged between the first heat exchange plate and the first beam body, and the heat conductivity coefficient of the heat insulation component is smaller than that of the first heat exchange plate.

In the technical scheme, the frame body is arranged in the box body, so that the overall structural strength of the box body is improved, and a stable accommodating space is provided for the battery monomer; the heat exchange assembly is arranged to exchange heat for the battery monomer, so that the running temperature of the battery monomer is controlled within a certain range, and the running stability of the battery monomer is improved; the heat insulation assembly is arranged between the first heat exchange plate and the first beam body, so that the heat transfer speed between the heat exchange assembly and the first beam body is reduced, the heat loss of the heat exchange assembly is reduced, the heat insulation performance of the heat exchange assembly is improved, and the heat exchange efficiency of the battery is improved.

In the technical scheme of the embodiment of the application, the heat conduction coefficient of the heat insulation component is smaller than that of the first beam body. The structure further reduces the heat transfer speed between the heat exchange assembly and the first beam body, improves the heat insulation performance of the heat exchange assembly, and accordingly improves the heat exchange efficiency of the battery.

In some embodiments, the insulation assembly comprises at least one of a polycarbonate sheet, a composite ceramic sheet. The material has low heat conductivity coefficient and density, can reduce the weight of the heat insulation component, and is beneficial to the weight reduction of the battery.

In some embodiments, the thickness H1 of the insulation assembly satisfies: h1 is more than or equal to 0.1mm and less than or equal to 0.5mm. The thickness of the heat insulation component is set to be more than 0.1mm by the structure, so that the heat insulation effect between the first beam body and the heat exchange component can be improved, and the heat loss of the heat exchange component is reduced; and the thickness of the heat insulation component is set below 0.5mm, so that the space occupied by the heat insulation component can be reduced, and the energy density of the battery can be improved.

In some embodiments, the frame has an opening and the heat exchange assembly covers the opening. The heat exchange assembly further comprises a second heat exchange plate and a heat exchange connecting piece. The second heat exchange plate is arranged on one side of the first heat exchange plate, which is away from the first beam body. The heat exchange connecting piece is arranged along the circumference of the opening and is used for connecting the first heat exchange plate and the second heat exchange plate. Wherein, the heat insulation component is arranged on one side of the heat exchange connecting piece, which is close to the opening. In the structure, through setting up the heat transfer connecting piece, improved the joint strength between first heat exchange plate and the second heat exchange plate. And the heat insulation assembly is arranged on the inner side of the heat exchange connecting piece, which is close to the opening, so that the heat insulation effect of the inside of the heat exchange assembly can be improved.

In some embodiments, the side of the first heat exchange plate facing the first beam body is concave to form a containing groove, the heat insulation component is arranged in the containing groove, and the heat insulation component protrudes out of the surface of the first heat exchange plate facing the first beam body. In the structure, through setting up the holding tank, improved the assembly efficiency of thermal-insulated subassembly and the accuracy of location to thermal-insulated subassembly protrusion has reduced the risk of first heat exchange plate and first roof beam body contact in the surface of first heat exchange plate, has further improved thermal-insulated heat preservation effect, thereby has improved the heat exchange efficiency of heat exchange assembly.

In some embodiments, the box further comprises a connecting piece, the connecting piece penetrates through the first heat exchange plate in the thickness direction and stretches into the first beam body, the heat insulation assembly is provided with a yielding hole, and the connecting piece penetrates through the yielding hole. Through setting up the connecting piece, improved the joint strength between heat exchange component and the framework. And the heat insulation assembly is provided with the abdication hole, so that the connecting piece can conveniently pass through the abdication hole to be connected with the first beam body, and the assembly efficiency is improved.

In some embodiments, the box further includes a connecting member penetrating the first heat exchange plate in a thickness direction and extending into the first beam body, and the heat insulation assembly includes a first heat insulation sheet and a second heat insulation sheet, and the first heat insulation sheet and the second heat insulation sheet are respectively disposed on two sides of the connecting member. The structure is provided with the connecting piece, so that the connection strength between the heat exchange assembly and the frame body is improved. The first heat insulation sheets and the second heat insulation sheets are arranged on two sides of the connecting piece, the first beam body and the first heat exchange plate are separated, the risk that heat conduction occurs due to contact of the heat exchange assembly and the frame body is reduced, and the heat preservation effect is improved.

In some embodiments, the box further comprises a sealing layer disposed between the first heat exchange plate and the first beam, and the sealing layer is disposed around the circumference of the connection member. Through setting up the sealing layer, reduce the risk that heat exchange assembly takes place the weeping, improved heat exchange assembly's sealing performance.

In a second aspect, the present application provides a battery, which includes a case and a battery unit in the foregoing embodiment, where the battery unit is disposed in the case, and a heat exchange component of the case is configured to exchange heat for the battery unit.

In a third aspect, the present application provides an electrical device comprising a battery according to the above embodiments, the battery being configured to provide electrical energy.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a vehicle according to an embodiment of the present application;

fig. 2 is an exploded view of a battery according to an embodiment of the present application;

fig. 3 is an exploded view of a battery cell according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a case according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a case according to an embodiment of the present application;

FIG. 6 is an enlarged view of the circle A in FIG. 5;

FIG. 7 is an enlarged view of the circle B in FIG. 5;

FIG. 8 is a schematic view of a receiving tank according to an embodiment of the present application;

FIG. 9 is an enlarged view of the circle C in FIG. 5;

fig. 10 is a schematic structural view of an insulation assembly according to an embodiment of the present application.

Detailed description of the reference numerals

1. A vehicle; 2. a battery; 10. an electrode assembly; 20. a housing; 30. an end cap; 40. a housing; 3. a controller; 4. a motor; 5. a case; 51. a first portion; 52. a second portion; 53. an accommodation space; 501. a frame; 502. a first beam body; 503. an opening; 504. a longitudinal beam; 505. a connecting piece; 506. a cross beam; 6. a heat exchange assembly; 601. a first heat exchange plate; 602. a second heat exchange plate; 603. a heat exchange connecting piece; 604. a receiving groove; 7. a battery cell; 8. a thermal insulation assembly; 801. a relief hole; 802. a first heat insulating sheet; 803. and a second heat insulating sheet.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, 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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means 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 appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle according to an embodiment of the application. The vehicle 1 can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extending vehicle. The interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or at the head or at the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1. The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the application, the battery 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

In some embodiments, the battery may be an energy storage device. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

Referring to fig. 2, fig. 2 is an exploded view of a battery according to an embodiment of the application. The battery 2 includes a case 5 and a battery cell 7, and the battery cell 7 is accommodated in the case 5. The case 5 is used to provide the accommodating space 53 for the battery cell 7, and the case 5 may have various structures.

In some alternative embodiments, the case 5 includes a first portion 51 and a second portion 52, the first portion 51 and the second portion 52 being mutually covered, the first portion 51 and the second portion 52 together defining an accommodation space 53 for accommodating the battery cell 7. The second portion 52 may be a hollow structure with one end opened, the first portion 51 may be a plate-shaped structure, and the first portion 51 covers the opening side of the second portion 52, so that the first portion 51 and the second portion 52 together define the accommodating space 53; the first portion 51 and the second portion 52 may be hollow structures each having an opening at one side, and the opening side of the first portion 51 is engaged with the opening side of the second portion 52. Of course, the case 5 formed by the first portion 51 and the second portion 52 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In some embodiments, the tank 5 may be part of the chassis structure of the vehicle 1. For example, a portion of the tank 5 may become at least a portion of the floor of the vehicle 1, or a portion of the tank 5 may become at least a portion of the cross member and the side member of the vehicle 1.

In some embodiments, the first portion 51 or the second portion 52 may include a frame including a plurality of beam structures, and a cover plate.

In the battery 2, the number of the battery cells 7 may be plural, and the plural battery cells 7 may be connected in series or parallel or in series-parallel, and the series-parallel refers to that the plural battery cells 7 are connected in series or parallel. The battery cells 7 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the battery cells 7 is accommodated in the box 5. Of course, the battery 2 may also be in a form of a plurality of battery cells 7 connected in series or parallel or series-parallel to form a battery module, and a plurality of battery modules connected in series or parallel or series-parallel to form a whole and accommodated in the case 5. The battery 2 may also include other structures, for example, the battery 2 may also include a bus member for making electrical connection between the plurality of battery cells 7.

Wherein each battery cell 7 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 7 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is a schematic exploded view of a battery cell 7 according to an embodiment of the application. The battery cell 7 refers to the smallest unit constituting the battery 2. As shown in fig. 3, the battery cell 7 includes a case 40, an electrode assembly 10, and other functional components.

The housing 40 may include an end cap 30 and a shell 20. The end cap 30 refers to a member that is covered at the opening of the case 20 to isolate the internal environment of the battery cell 7 from the external environment.

The electrode assembly 10 is a component in which electrochemical reactions occur in the battery cells 7. One or more electrode assemblies 10 may be contained within the case 20. The electrode assembly 10 includes a positive electrode tab, a negative electrode tab, and a separator. During the charge and discharge of the battery cell 7, active ions (e.g., lithium ions) are inserted and extracted back and forth between the positive electrode tab and the negative electrode tab. The separator is arranged between the positive pole piece and the negative pole piece, can play a role in preventing the positive pole piece and the negative pole piece from being short-circuited, and can enable active ions to pass through. In some embodiments, the battery cell 7 further includes an electrolyte that serves to conduct ions between the positive and negative electrodes. The application is not particularly limited in the kind of electrolyte, and may be selected according to the need. The electrolyte may be liquid, gel or solid.

In some embodiments, the electrode assembly 10 is a rolled structure. Alternatively, the electrode assembly 10 is a lamination stack.

In order to improve the efficiency and the running stability of the battery monomer, a heat exchange component is generally arranged in a box body of the battery to exchange heat for the battery monomer. The heat exchange assembly generally comprises a heat exchange plate, a heat exchange medium in the heat exchange plate, a control valve, a water pump and other components, wherein the heat exchange plate is arranged between the battery monomer and the bottom plate of the box body, and the heat exchange plate is connected with the frame body of the box body so as to improve the structural stability of the heat exchange assembly.

The heat exchange plate and the frame body are generally made of metal materials, the heat conductivity coefficient of the metal materials is relatively high, and in the heat exchange process of the heat exchange assembly for the battery monomer, heat is transferred from the heat exchange assembly to the frame body due to the fact that the heat exchange plate and the frame body are attached, and the heat conductivity coefficient of the heat exchange assembly is reduced, so that the structure is improved, and the heat exchange efficiency of the heat exchange assembly is improved.

The embodiment of the application provides a box body, wherein a frame body is arranged in the box body, so that the overall structural strength of the box body is improved, and a stable accommodating space is provided for a battery monomer; the heat exchange assembly is arranged to exchange heat for the battery monomer, so that the running temperature of the battery monomer is controlled within a certain range, and the running stability of the battery monomer is improved; the heat insulation assembly is arranged between the first heat exchange plate and the first beam body, so that the heat transfer speed between the heat exchange assembly and the first beam body is reduced, the heat loss of the heat exchange assembly is reduced, the heat insulation performance of the heat exchange assembly is improved, and the heat exchange efficiency of the battery is improved.

The case, the battery and the power consumption device according to the embodiments of the present application will be described in detail with reference to fig. 4 to 7, where fig. 4 is a schematic structural diagram of the case according to an embodiment of the present application, fig. 5 is a schematic sectional structural diagram of the case according to an embodiment of the present application, fig. 6 is an enlarged structural diagram of the round frame a in fig. 5, and fig. 7 is an enlarged structural diagram of the round frame B in fig. 5.

As shown, the box 5 of the embodiment of the present application includes a frame 501, a heat exchange assembly 6, and a heat insulation assembly 8. The frame 501 includes a first beam 502, and the frame 501 has an accommodation space 53 for accommodating the battery cell 7. The heat exchange assembly 6 is connected to the frame 501, and the heat exchange assembly 6 includes a first heat exchange plate 601, and the first heat exchange plate 601 is disposed towards the frame 501. The heat insulation assembly 8 is disposed between the first heat exchange plate 601 and the first beam 502, and the heat conductivity of the heat insulation assembly 8 is smaller than that of the first heat exchange plate 601.

The thermal conductivity is a material 1 m thick under a stable heat transfer condition, the temperature difference between the surfaces of both sides is 1 degree (K, DEG C), and the heat transferred through 1 square meter area in 1 second is expressed in W/(m DEG C). The thermal conductivity is an important parameter reflecting the thermal conductivity of the material. Illustratively, the greater the thermal conductivity of the material, the more heat transferred over the same period of time. The heat conductivity coefficient of the heat insulation component 8 is smaller than that of the first heat exchange plate 601, and the speed of heat transfer from the first heat exchange plate 601 to the heat insulation component 8 is reduced, so that the heat loss of the heat exchange component 6 is reduced.

In the above technical solution, the frame 501 is disposed in the case 5 to improve the overall structural strength of the case 5, and provide a stable accommodating space 53 for the battery unit 7; the heat exchange assembly 6 is arranged to exchange heat for the battery cell 7, so that the running temperature of the battery cell 7 is controlled within a certain range, and the running stability of the battery cell 7 is improved; the heat insulation component 8 is arranged between the first heat exchange plate 601 and the first beam body 502, so that the heat transfer speed between the heat exchange component 6 and the first beam body 502 is reduced, the heat loss of the heat exchange component 6 is reduced, the heat insulation performance of the heat exchange component 6 is improved, and the heat exchange efficiency of the battery 2 is improved.

In some embodiments of the present application, the thermal insulation assembly 8 has a thermal conductivity that is less than the thermal conductivity of the first beam 502. The structure further reduces the heat transfer speed between the heat exchange assembly 6 and the first beam 502, improves the heat insulation performance of the heat exchange assembly 6, and improves the heat exchange efficiency of the battery 2.

In some embodiments of the application, the insulation assembly 8 comprises at least one of a polycarbonate sheet, a composite ceramic sheet. The insulation assembly 8 of the present application may be made of at least one of polycarbonate sheets or composite ceramic sheets. These materials have a lower thermal conductivity and a lower density, which can effectively reduce the weight of the insulation assembly 8 while reducing the added weight to the battery frame 501. This feature is advantageous for the lightweight design of the battery 2, and can reduce the weight of the entire battery 2 system, thereby improving its energy efficiency and performance.

Polycarbonate sheets are a commonly used plastic material with excellent heat resistance, flame resistance and impact resistance. It is capable of effectively insulating heat transfer while maintaining sufficient structural strength. The composite ceramic plate is formed by compounding a plurality of ceramic materials, has lower heat conductivity coefficient and higher hardness and wear resistance.

As shown in fig. 5 and 6, in some embodiments of the application, the insulation assembly 8 may be of a multi-layer construction. By superposing and combining different materials, the heat insulation effect is further improved. For example, polycarbonate sheets and composite ceramic sheets may be alternately stacked to form a multi-layered structure to enhance heat insulating properties. The heat insulation component 8 is made of low-heat-conductivity and low-density materials, so that the weight of the battery 2 can be effectively reduced, the occupied space is reduced, and the lightweight design of the battery 2 is facilitated. Meanwhile, by adopting the multilayer structure, the heat insulation effect can be further improved, and the safety and stability of the battery 2 are ensured. In some embodiments of the application, the thickness H1 of the insulation assembly 8 satisfies: h1 is more than or equal to 0.1mm and less than or equal to 0.5mm. Alternatively, H1 is 0.1mm, 0.2mm, 0.3 mm, 0.4 mm, or 0.5mm.

The thickness of the heat insulation component 8 is set to be more than 0.1mm, so that the heat insulation effect between the first beam 502 and the heat exchange component 6 can be improved, and the heat loss of the heat exchange component 6 can be reduced; the thickness of the heat insulation component 8 is set below 0.5mm, so that the space occupied by the heat insulation component 8 can be reduced, and the energy density of the battery 2 can be improved.

Referring to fig. 4, 6 and 7 in combination, in some embodiments of the application, the frame 501 has an opening 503, the heat exchange assembly 6 covers the opening 503, and the heat exchange assembly 6 further includes a second heat exchange plate 602 and a heat exchange connection member 603. The second heat exchanger plate 602 is arranged at a side of the first heat exchanger plate 601 facing away from the first beam 502. The heat exchange connection member 603 is disposed along a circumferential direction of the opening 503, and the heat exchange connection member 603 is used to connect the first heat exchange plate 601 and the second heat exchange plate 602. Wherein the heat insulation assembly 8 is arranged at one side of the heat exchange connection member 603 close to the opening 503. In the above-described structure, by providing the heat exchange connection member 603, the connection strength between the first heat exchange plate 601 and the second heat exchange plate 602 is improved. The heat insulating member 8 is provided inside the heat exchange connector 603 near the opening 503, and thus the heat insulating effect inside the heat exchange member 6 can be improved.

In some alternative embodiments, the heat exchange connection 603 connects the first heat exchange plate 601 and the second heat exchange plate 602 with the frame 501. Optionally, the frame 501 may include a cross member 506 and a longitudinal member 504. The heat exchange connecting piece 603 can be connected with the cross beam 506 or the longitudinal beam 504, and the heat exchange connecting piece 603 and the frame body 501 can be connected in a friction stir welding mode.

Friction stir welding (Friction STIR WELDING, FSW for short) is a welding technique that utilizes heat generated by friction between a welding tool rotating at high speed and a workpiece to locally melt a material to be welded. It has the advantages of no need of solder, no pollution small welding deformation, high joint strength and other excellent performances. The structure can improve the connection strength between the heat exchange component 6 and the frame 501 and improve the production and assembly efficiency of the box 5.

As shown in fig. 8, in some embodiments of the present application, a side of the first heat exchange plate 601 facing the first beam 502 is concaved to form a receiving groove 604, the insulation assembly 8 is disposed in the receiving groove 604, and the insulation assembly 8 protrudes from the surface of the first heat exchange plate 601 facing the first beam 502. In the above-mentioned structure, through setting up holding tank 604, improved the assembly efficiency and the accuracy of location of thermal-insulated subassembly 8 to thermal-insulated subassembly 8 protrusion in the surface of first heat exchange plate 601 has reduced the risk of first heat exchange plate 601 and first roof beam body 502 contact, has further improved thermal-insulated heat preservation effect, thereby has improved the heat exchange efficiency of heat exchange assembly 6.

As shown in fig. 4 and 9, in some embodiments of the present application, the case 5 further includes a longitudinal beam 504 and a cross beam 506, and the two longitudinal beams 504 and the two cross beams 506 are connected to each other and form a frame structure having the receiving space 53. The two ends of the first beam 502 may be connected to the two cross members 506, respectively, or the two ends of the first beam 502 may be connected to the two side members 504, respectively. The box 5 further comprises a connecting piece 505, the connecting piece 505 penetrates through the first heat exchange plate 601 in the thickness direction and stretches into the first beam body 502, the heat insulation assembly 8 is provided with a yielding hole 801, and the connecting piece 505 penetrates through the yielding hole 801.

In the above technical solution, the first beam 502 may be a limiting beam, which is used to limit deformation of the battery cell 7 in the frame 501 during operation. The stopper beam in the battery case 5 is a member for restricting the position and movement of the battery cell 7 within the case 5. It is generally made of metal or high-strength plastic, etc., and has sufficient rigidity and strength to ensure the safety and stability of the battery 2 under various conditions. The limiting beam is usually positioned at the bottom of the box body 5 and contacts with the corresponding part in the battery 2, so as to play a role in supporting and positioning. It also prevents excessive shaking or movement of the battery cells 7 within the housing 5, thereby reducing the risk of damage or shorting of the battery 2. And the limiting beam can also be used as a structural support of the box body 5, so that the rigidity and strength of the whole box body 5 are improved. The limiting beam and the heat exchange assembly 6 are connected through the connecting piece 505, so that the connection strength between the heat exchange assembly 6 and the frame 501 is improved. The heat insulation assembly 8 is provided with the yielding holes 801, so that the connecting piece 505 can conveniently penetrate through the yielding holes 801 to be connected with the first beam 502, and the assembly efficiency is improved.

As shown in fig. 4 and 10, in some embodiments of the present application, the heat insulation assembly 8 includes a first heat insulation sheet 802 and a second heat insulation sheet 803, and the first heat insulation sheet 802 and the second heat insulation sheet 803 are disposed on both sides of the connection member 505, respectively. In the above structure, the connecting piece 505 is arranged, so that the connection strength between the heat exchange assembly 6 and the frame 501 is improved. The first heat insulating sheets 802 and the second heat insulating sheets 803 are arranged on two sides of the connecting piece 505, so that the first beam 502 and the first heat exchange plate 601 are separated, the risk of heat conduction caused by contact between the heat exchange assembly 6 and the frame 501 is reduced, and the heat preservation effect is improved.

In some alternative embodiments, the minimum distance between the first thermal shield 802 and the connector 505 is 10mm-30mm, and exemplary, the minimum distance between the first thermal shield 802 and the connector 505 is 20mm. The above-mentioned too big distance can lead to laminating under the effect of connecting piece 505 between heat exchange assembly 6 and the framework 501, takes place more heat transfer, and the heat preservation effect reduces. The distance is too small, and the deformation stress of the heat exchange assembly 6 is too large.

In some alternative embodiments, the connector 505 comprises a blind rivet nut. The rivet nut can better adapt to the connection scene with smaller operation space and has high connection strength. Therefore, the above structure can improve good connection strength between the heat exchange assembly 6 and the first beam 502, and improve the overall structural stability of the box 5.

In some embodiments of the application, the tank 5 further comprises a sealing layer, which is arranged between the first heat exchanger plate 601 and the first beam 502, and which is arranged circumferentially around the connection 505. Through setting up the sealing layer, reduce the risk that heat exchange assembly 6 takes place the weeping, improved the sealing performance of heat exchange assembly 6.

The embodiment of the application provides a battery 2, which comprises a box body 5 and a battery unit 7 in the embodiment, wherein the battery unit 7 is arranged in a frame body 501 of the box body 5, and a heat exchange component 6 of the box body 5 is used for exchanging heat for the battery unit 7. The embodiment of the application also provides an electric device, which comprises the battery 2 in the embodiment, wherein the battery 2 is used for providing electric energy.

In the battery 2 and the power consumption device in the embodiment of the application, the frame 501 is arranged in the box 5 to improve the overall structural strength of the box 5 and provide a stable accommodating space 53 for the battery unit 7; the heat exchange assembly 6 is arranged to exchange heat for the battery cell 7, so that the running temperature of the battery cell 7 is controlled within a certain range, and the running stability of the battery cell 7 is improved; the heat insulation component 8 is arranged between the first heat exchange plate 601 and the first beam body 502, so that the heat transfer speed between the heat exchange component 6 and the first beam body 502 is reduced, the heat loss of the heat exchange component 6 is reduced, the heat insulation performance of the heat exchange component 6 is improved, and the heat exchange efficiency of the battery 2 is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may 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 encompasses all technical solutions falling within the scope of the claims.

Claims (11)

1. A tank (5), characterized by comprising:

A frame body (501) including a first beam body (502), the frame body (501) having an accommodation space (53) for accommodating the battery cell (7);

A heat exchange assembly (6) connected to the frame (501), the heat exchange assembly (6) comprising a first heat exchange plate (601), the first heat exchange plate (601) being disposed towards the frame (501);

And the heat insulation component (8) is arranged between the first heat exchange plate (601) and the first beam body (502), and the heat conductivity coefficient of the heat insulation component (8) is smaller than that of the first heat exchange plate (601).

2. The tank (5) according to claim 1, wherein the thermal insulation assembly (8) has a thermal conductivity that is smaller than the thermal conductivity of the first beam (502).

3. The tank (5) according to claim 1, wherein the insulation assembly (8) comprises at least one of a polycarbonate sheet, a composite ceramic sheet.

4. A tank (5) according to claim 3, characterized in that the thickness H1 of the insulating assembly (8) satisfies: h1 is more than or equal to 0.1mm and less than or equal to 0.5mm.

5. The tank (5) according to any one of claims 1-4, wherein the frame (501) has an opening (503), the heat exchange assembly (6) covering the opening (503), the heat exchange assembly (6) further comprising:

The second heat exchange plate (602) is arranged on one side of the first heat exchange plate (601) away from the first beam body (502);

A heat exchange connecting piece (603) arranged along the circumferential direction of the opening (503), wherein the heat exchange connecting piece (603) is used for connecting the first heat exchange plate (601) and the second heat exchange plate (602),

Wherein, the heat insulation component (8) is arranged at one side of the heat exchange connecting piece (603) close to the opening (503).

6. The case (5) according to claim 5, wherein a side of the first heat exchange plate (601) facing the first beam (502) is concaved inward to form a receiving groove (604), the heat insulating member (8) is provided in the receiving groove (604), and the heat insulating member (8) protrudes from a surface of the first heat exchange plate (601) facing the first beam (502).

7. The box (5) according to claim 5, wherein the box (5) further comprises a connecting piece (505), the connecting piece (505) penetrates through the first heat exchange plate (601) along the thickness direction and stretches into the first beam body (502), a yielding hole (801) is formed in the heat insulation component (8), and the connecting piece (505) penetrates through the yielding hole (801).

8. The box (5) according to claim 5, wherein the box (5) further comprises a connecting piece (505), the connecting piece (505) penetrates through the first heat exchange plate (601) in the thickness direction and extends into the first beam body (502), the heat insulation assembly (8) comprises a first heat insulation sheet (802) and a second heat insulation sheet (803), and the first heat insulation sheet (802) and the second heat insulation sheet (803) are respectively arranged on two sides of the connecting piece (505).

9. The tank (5) according to claim 7 or 8, wherein the tank (5) further comprises a sealing layer, which is arranged between the first heat exchanger plate (601) and the first beam (502), and which is arranged circumferentially around the connection member (505).

10. A battery (2), characterized by comprising:

A tank (5) according to any one of claims 1 to 9, and

And the battery monomer (7) is arranged in the frame body (501) of the box body (5), and the heat exchange component (6) of the box body (5) is used for exchanging heat for the battery monomer (7).

11. An electric device, characterized in that it comprises a battery (2) according to claim 10, said battery (2) being intended to supply electric energy.