Box body, battery and electric device

Abstract

The utility model discloses a box body, a battery and an electric device. The box body comprises a side wall, a top wall and a supporting frame, and the top wall is located on one side of the side wall in the first direction; the supporting frame is located on the side, deviating from the top wall, of the side wall in the first direction, the supporting frame comprises a bottom wall, a supporting plate located on the side, facing the top wall, of the bottom wall and a flow channel defined by the bottom wall and the supporting plate, a containing space is defined by the side wall, the top wall and the supporting frame, and the containing space is used for containing a single battery and cooling liquid; and one side, facing the accommodating space, of the supporting plate is provided with a conduction opening for communicating the accommodating space with the flow channel. According to the box body provided by the invention, the cooling capacity of the battery monomers can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and in particular to a box, a battery and an electrical device. Background Art

[0002] With the promotion of the concept of energy conservation and emission reduction, more and more fields use electricity as driving energy. Therefore, the demand for batteries in various fields is also increasing, and the development of battery technology is becoming more and more important to the development of other fields.

[0003] In existing batteries, when cooling the battery cells, the heat exchange area on the battery cells is limited, and the cooling uniformity when cooling the battery cells is poor, resulting in low cooling efficiency of the battery cells. Summary of the invention

[0004] In view of the above problems, the present application provides a box, a battery and an electrical device, which can improve the cooling capacity of the battery cells.

[0005] In the first aspect, the present application provides a box body, which includes side walls, a top wall and a support frame, wherein the top wall is located on one side of the side wall in a first direction; the support frame is located on the side of the side wall in the first direction away from the top wall, and the support frame includes a bottom wall, a support plate located on the side of the bottom wall facing the top wall, and a flow channel formed by the bottom wall and the support plate, wherein the side wall, the top wall and the support frame are combined to form a accommodating space, and the accommodating space is used to accommodate battery cells and coolant, and a connecting opening connecting the accommodating space and the flow channel is opened on the side of the support plate facing the accommodating space.

[0006] In the technical solutions of some embodiments of the present application, the box includes a side wall, a top wall and a support frame, and the side wall, the top wall and the support frame are enclosed to form a receiving space, and the receiving space is used to receive battery cells and coolant, so that the battery cells can be well immersed in the coolant, so that the coolant can contact with a larger surface area of ​​the battery cells, and the cooling efficiency of the coolant on the battery cells can be well improved. The support frame is located on the side of the side wall away from the top wall in the first direction, and the support frame includes a bottom wall, a support plate located on the side of the bottom wall facing the top wall, and a flow channel formed by the bottom wall and the support plate, wherein the support plate can be used to support the battery cells, and a conducting opening connecting the receiving space and the flow channel is provided on the side of the support plate facing the receiving space, so that the coolant in the receiving space can flow into the flow channel through the conducting opening, and the coolant in the flow channel can flow to the battery cells through the conducting opening and contact with the surface of the battery cells facing the support plate, so that the direct heat exchange area between the coolant and the battery cells can be well improved, so that the battery cells in the box can be cooled more evenly, and the cooling capacity of the battery cells can be well improved, which is conducive to improving the service life of the battery cells.

[0007] In some embodiments, the number of support plates is at least two, the support plates extend along the third direction and are spaced apart in the second direction, at least part of the flow channel is formed between adjacent support plates, the conduction opening is formed on one side of the adjacent support plates facing the accommodation space, and the first direction, the second direction and the third direction intersect each other. The support plates extending along the third direction and spaced apart in the second direction can guide the coolant in the flow channel well, so that the coolant in the flow channel flows along the third direction, so that the coolant can better cool the multiple battery cells arranged in the third direction, thereby being able to better improve the cooling efficiency.

[0008] In some embodiments, the support frame further includes a frame disposed on the side of the support plate facing the accommodating space, the frame including a first beam extending along the third direction and spaced apart in the second direction, and / or the frame including a second beam extending along the second direction and spaced apart in the third direction. The battery cell may be disposed between adjacent first beams in the second direction, the first beam may be used to limit the movement of the battery cell in the second direction, and / or the battery cell may be disposed between adjacent second beams in the third direction, the second beam may be used to limit the movement of the battery cell in the third direction, so that the battery cell may be better fixed in the box, and the structural stability of the battery may be better improved.

[0009] In some embodiments, the frame and the support plate are integrally formed. By integrally forming the frame and the support plate, the frame can be prepared together with the support plate, and when assembling the support frame, the frame and the support plate can be assembled with the bottom wall as a whole, thereby facilitating the assembly of the support frame.

[0010] In some embodiments, the support frame further includes a cushioning structure disposed between the support plate and the bottom wall, so that the bottom wall and the support plate are spaced apart, and at least part of the flow channel is formed in the space between the bottom wall and the support plate. By arranging the cushioning structure between the support plate and the bottom wall, the cushioning structure can separate the support plate from the bottom wall, so that a certain distance between the support plate and the bottom wall is provided, and the distance can be used to participate in the formation of the flow channel, so that the flow channel can have a larger size, so that more coolant can flow in the flow channel, which can better improve the cooling effect of the coolant on the battery cell.

[0011] In some embodiments, the padding structure is integrally formed with the support plate. By integrally forming the padding structure with the support plate, the padding structure can be prepared together with the support plate, and when assembling the support frame, the padding structure and the support plate can be assembled with the bottom wall as a whole, thereby facilitating the assembly of the support frame.

[0012] In some embodiments, the box body further includes a liquid circulation component, and a liquid hole is provided through at least one of the top wall, the side wall and the support frame, and the liquid circulation component is connected to the liquid hole. The liquid circulation component is used to inject coolant into the accommodation space through the liquid hole and / or to extract the coolant in the accommodation space through the liquid hole. The liquid circulation component can inject coolant into the accommodation space so that coolant with a more suitable temperature can enter the accommodation space to exchange heat with the battery cells. The liquid circulation component can also extract the coolant in the accommodation space so that the coolant with a higher temperature in the accommodation space can be extracted to better take away the heat in the accommodation space. When the liquid circulation component injects and extracts the coolant, the coolant in the accommodation space can also circulate better, thereby better improving the cooling effect in the box body.

[0013] In some embodiments, the box body further includes a temperature control component connected between the liquid circulation component and the liquid hole, and the temperature control component is used to heat the coolant flowing from the liquid circulation component to the storage space and / or to cool the coolant flowing from the storage space to the liquid circulation component. By setting the temperature control component, when the working environment temperature of the battery is low, the temperature control component can heat the coolant flowing from the liquid circulation component to the storage space, so that the coolant can better heat the battery cell that has just started working to a certain extent, so as to facilitate the operation of the battery cell and can better extend the service life of the battery cell. When the battery cell has been working for a period of time and the temperature of the battery cell in the box is high, the temperature control component can cool the coolant flowing from the storage space to the liquid circulation component to reduce the temperature of the coolant drawn from the storage space by the liquid circulation component, so that when the liquid circulation component injects this part of the coolant into the storage space, the coolant with a lower temperature can better cool the battery cell.

[0014] In some embodiments, a safety hole is provided through at least one of the top wall, the side wall and the support frame, and the box body further includes a safety valve provided at the safety hole, the safety valve is used to add coolant to the accommodation space, and / or the safety valve is used to discharge the coolant or gas in the accommodation space when the air pressure in the accommodation space reaches the air pressure threshold. By providing the safety valve, when it is impossible to add coolant to the accommodation space through the liquid hole of the box body, the coolant can be added to the accommodation space by opening the safety valve. The safety valve can also discharge the coolant or gas in the accommodation space when the air pressure in the accommodation space reaches the air pressure threshold, so that when the battery is in an abnormal condition and overpressure or overheating occurs, the box body can directly release the overpressure and overheated gas or coolant to relieve the air pressure inside the box body, so that the box body is not prone to bulging or even explosion, thereby better improving the working reliability of the battery.

[0015] In a second aspect, the present application provides a battery, the battery comprising a battery cell, a coolant and a box of any one of the above items, the battery cell is located in the accommodating space and connected to the support plate of the support frame, the projection of the battery cell in the first direction and the projection of the conduction opening in the first direction are at least partially overlapped; at least part of the coolant is located in the accommodating space and the flow channel. The battery cell located in the accommodating space of the box body can be well immersed in the coolant, so that the coolant can contact with a larger surface area of ​​the battery cell, the support plate can be used to support the battery cell, by opening a conduction opening connecting the accommodating space and the flow channel on the side of the support plate facing the accommodating space, and setting the projection of the battery cell in the first direction and the projection of the conduction opening in the first direction to at least partially overlap, so that when the coolant in the accommodating space flows into the flow channel through the conduction opening, the coolant in the flow channel can flow to the battery cell through the conduction opening and contact the surface of the battery cell facing the support plate side, which can well increase the direct heat exchange area between the coolant and the battery cell, so that the battery cell in the box body can be cooled more evenly, which can well improve the cooling capacity of the battery, and is conducive to improving the service life of the battery.

[0016] In some embodiments, the number of battery cells is at least two, and the battery further includes a limiting member disposed between adjacent battery cells, the limiting member and the battery cells on both sides thereof are combined to form a limiting gap, and the limiting gap is connected to the accommodation space. The limiting member can separate two adjacent battery cells so that there is a certain distance between the two adjacent battery cells, wherein the limiting member and the battery cells on both sides thereof are combined to form a limiting gap, and by setting the limiting gap to be connected to the accommodation space, the coolant in the accommodation space can enter the limiting gap and cool the relative surfaces between the two adjacent battery cells, so as to further increase the heat exchange area between the coolant and the battery cells, thereby being able to better improve the cooling uniformity of the battery cells in the box.

[0017] In some embodiments, the battery further includes at least two end plates disposed in the accommodation space, the end plates are connected to the support frame and at least two end plates are spaced apart, the battery cells are located in the gap between adjacent end plates, and the end plates are provided with through holes that penetrate and extend in the direction pointing to the battery cells, and the through holes are connected to the accommodation space. The battery cells can be clamped between adjacent end plates, and the end plates connected to the support frame can better limit the battery cells. By providing through holes that penetrate and extend in the direction pointing to the battery cells on the end plates, the coolant in the accommodation space can flow through the through holes to the surface of the battery cells opposite to the end plates, so as to further increase the heat exchange area between the coolant and the battery cells, thereby being able to better improve the cooling uniformity of the battery cells in the box.

[0018] In a third aspect, the present application provides an electrical device, the electrical device comprising any of the batteries described above, the battery being used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0021] Figure 2 A schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application;

[0022] Figure 3 A schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of a support frame without a bottom wall in some embodiments of the present application;

[0024] Figure 5 It is a schematic diagram of the structure of the support frame without the bottom wall in some other embodiments of the present application;

[0025] Figure 6 This is a schematic diagram of the exploded structure of the support frame without the bottom wall in some embodiments of the present application;

[0026] Figure 7 This is a schematic diagram of the exploded structure of the support frame and the battery cell without the bottom wall in some embodiments of the present application;

[0027] Figure 8 This is a schematic diagram of the structure of the box in some embodiments of the present application;

[0028] Fig. 9 This is a schematic diagram of the structure of the position-limiting member and the battery cell in some embodiments of the present application;

[0029] Fig.10 Schematic diagram of the structure of the position-limiting member and the battery cell of other embodiments of the present application;

[0030] Fig.11 This is a schematic structural diagram of a position-limiting member and a battery cell according to some other embodiments of the present application;

[0031] Fig.12 Schematic diagram of the structure of the position-limiting member and the battery cell of some other embodiments of the present application;

[0032] Fig.13 Schematic diagram of the exploded structure of batteries according to other embodiments of the present application.

[0033] The figures are as follows:

[0034] Vehicles 1000;

[0035] Battery 100; Controller 200; Motor 300;

[0036] Battery cell 1; housing 11; liquid injection hole 14a; electrode assembly 12; electrode terminal 13; end cap 14;

[0037] Box body 2; accommodating space 2a; liquid hole 2b; safety hole 2c; side wall 21; top wall 22; support frame 23; flow channel 23a; conduction opening 23b; sub-flow channel 23c; bottom wall 231; support plate 232; frame 233; first beam 233a; second beam 233b; padding structure 234; liquid circulation component 24; liquid storage part 241; liquid injection pipe 242; liquid extraction pipe 243; liquid pump 244; temperature control component 25; heating component 251; cooling component 252; safety valve 26;

[0038] Limiting member 3; limiting gap 3a; limiting opening 3b;

[0039] End plate 4; through hole 4a;

[0040] First direction X;

[0041] The second direction Y;

[0042] The third direction Z. DETAILED DESCRIPTION

[0043] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0044] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in some embodiments of the present application should have the common meanings understood by technicians in the fields to which some embodiments of the present application belong.

[0045] In the description of some embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing some embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on some embodiments of the present application.

[0046] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of some embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0047] In the description of some embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in some embodiments of the present application can be understood according to specific circumstances.

[0048] In the description of some embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0050] The applicant has noticed that as the amount of battery usage gradually increases, the cooling of the battery cells in the battery is becoming more and more important. In the related art, the battery cells are often cooled by bonding a cooling plate to the battery cells, wherein a coolant can flow through the cooling plate, and the coolant can be used to remove the heat of the battery cells. However, the contact area between the cooling plate and the battery cells is limited, and it is impossible to cool each battery cell in the battery more evenly and comprehensively, resulting in low cooling efficiency, which is easy to affect the life uniformity of each battery cell in the battery.

[0051] In order to improve the cooling efficiency of each battery cell in the battery, the applicant has found that coolant can be directly added into the battery box, and a flow channel and a conducting opening for circulating the coolant are provided at the bottom of the box.

[0052] For example, the box body may include a side wall, a top wall and a support frame, and the side wall, the top wall and the support frame of the box body may be enclosed to form a receiving space, and the coolant may be directly added to the receiving space of the battery box body, so that the battery cell can be well immersed in the coolant, so that the coolant can contact with a larger surface area of ​​the battery cell, and the cooling efficiency of the coolant on the battery cell can be well improved. The support frame is located on the side of the side wall away from the top wall in the first direction, and the support frame includes a bottom wall, a support plate located on the side of the bottom wall facing the top wall, and a flow channel formed by the bottom wall and the support plate, wherein the support plate can be used to support the battery cell, and a conducting opening connecting the receiving space and the flow channel is provided on the side of the support plate facing the receiving space, so that the coolant in the receiving space can flow into the flow channel through the conducting opening, and the coolant in the flow channel can flow to the battery cell through the conducting opening and contact with the surface of the battery cell facing the support plate, so that the direct heat exchange area between the coolant and the battery cell can be well improved, so that the battery cell in the box body can be cooled more evenly, and the cooling capacity of the battery cell can be well improved, which is conducive to improving the service life of the battery cell.

[0053] Some embodiments of the present application provide a box, and a battery including a battery cell and such a box, and an electrical device using the battery. Among them, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and some embodiments of the present application do not limit this. The battery cell may be flat, rectangular, or in other shapes, and some embodiments of the present application do not limit this.

[0054] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack, etc. The casing in the battery can be used to encapsulate one or more battery cells. The casing can prevent foreign matter from affecting the charging or discharging of the battery cells to a certain extent. This battery is suitable for various electrical devices using batteries, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; the battery is used to provide electrical energy for the above-mentioned electrical devices.

[0055] The electrical devices provided in some embodiments of the present application may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc.; the spacecraft includes airplanes, rockets, space shuttles, and spacecrafts, etc.; the electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; the electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. Some embodiments of the present application do not impose special restrictions on the above-mentioned electrical devices.

[0056] It should be understood that the technical solutions described in some embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0057] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0058] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0059] The battery 100 may include a housing 20 and a battery cell 1. In the battery 100, there may be multiple battery cells 1, and the multiple battery cells 1 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 1 are both connected in series and in parallel. The multiple battery cells 1 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 1 may be accommodated in the housing 20; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 1 in series, in parallel, or in a mixed connection, and then the multiple battery modules may be connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the housing 20. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 1.

[0060] Each battery cell 1 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 1 may be cylindrical, flat, rectangular or in other shapes.

[0061] Please refer to Figure 2 , Figure 2 The schematic diagram of the exploded structure of the battery cell 1 provided in some embodiments of the present application, the X direction in the figure is the first direction X, the Y direction in the figure is the second direction Y, and the Z direction in the figure is the third direction Z. The battery cell 1 refers to the smallest unit constituting the battery 100. Figure 2 The battery cell 1 includes a shell 11, an electrode assembly 12, an electrode terminal 13, a switching element and other functional components.

[0062] The shell 11 is a component for forming the internal environment of the battery cell 1, wherein the formed internal environment can be used to accommodate the electrode assembly 12, the electrolyte and other components. The shell 11 can be of various shapes and sizes, such as a rectangular parallelepiped and a hexagonal prism. Specifically, the shape of the shell 11 can be determined according to the specific shape and size of the electrode assembly 12. The material of the shell 11 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and some embodiments of the present application do not impose special restrictions on this.

[0063] The housing 11 includes an end cap 14, which refers to a component that covers the opening of the housing 11 to isolate the internal environment of the battery cell 1 from the external environment. Without limitation, the shape of the end cap 14 can be adapted to the shape of the opening of the housing 11. Optionally, the end cap 14 can be made of a material with a certain hardness and strength (such as an aluminum alloy), so that the end cap 14 is not easily deformed when squeezed and collided, so that the battery cell 1 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 13 can be provided on the end cap 14. The electrode terminal 13 can be used to electrically connect to the electrode assembly 12 for outputting or inputting electrical energy of the battery cell 1. The material of the end cap 14 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and some embodiments of the present application do not impose special restrictions on this. In some embodiments, an insulating member can also be provided on the inner side of the end cap 14, and the insulating member can be used to isolate the electrical connection components in the housing 11 from the end cap 14 to reduce the risk of short circuit. Exemplarily, the insulating member may be plastic, rubber, etc. In some embodiments, the end cap 14 further has a liquid injection hole 14 a to inject electrolyte into the housing 11 through the liquid injection hole 14 a.

[0064] The electrode assembly 12 is a component where electrochemical reactions occur in the battery cell 1. The housing 11 may contain one or more electrode assemblies 12. The electrode assembly 12 may be mainly formed by stacking pole pieces, and a separator is usually provided between the pole pieces.

[0065] Figure 3 Schematic diagram of the exploded structure of the battery 100 according to some embodiments of the present application. Figure 4 This is a schematic structural diagram of the support frame 23 without the bottom wall 231 according to some embodiments of the present application.

[0066] like Figure 3 and Figure 4 As shown, the present application provides a box body 2, which includes a side wall 21, a top wall 22 and a support frame 23, wherein the top wall 22 is located on one side of the side wall 21 in a first direction X; the support frame 23 is located on the side of the side wall 21 away from the top wall 22 in the first direction X, and the support frame 23 includes a bottom wall 231, a support plate 232 located on the side of the bottom wall 231 facing the top wall 22, and a flow channel 23a formed by the bottom wall 231 and the support plate 232, wherein the side wall 21, the top wall 22 and the support frame 23 are combined to form a accommodating space 2a, and the accommodating space 2a is used to accommodate the battery cell 1 and the coolant, and the support plate 232 is provided with a conducting opening 23b connecting the accommodating space 2a and the flow channel 23a on the side facing the accommodating space 2a.

[0067] In some embodiments of the present application, at least two of the side wall 21, the top wall 22 and the support frame 23 may be integrally formed, for example, a portion of the support frame 23 and a portion of the side wall 21 may be integrally formed, and the top wall 22 may cover the opening of the side wall 21 away from the base. There are many ways to set the shape of the box body 2, for example, the box body 2 may be a cylinder or a cuboid.

[0068] Optionally, the material of the side wall 21, the top wall 22 and / or the support frame 23 may include at least one of aluminum alloy, steel and plastic. Optionally, the side wall 21, the top wall 22 and / or the support frame 23 may be formed by extrusion, casting or injection molding.

[0069] Optionally, when the accommodating space 2a of the box body 2 contains battery cells 1 and coolant, the coolant can flow to the partial conductive opening 23b at the interval between adjacent battery cells 1, and flow into the flow channel 23a through the partial conductive opening 23b, and then the coolant in the flow channel 23a can flow to the battery cell 1 through another partial conductive opening 23b and contact the surface of the battery cell 1 facing the support plate 232, so as to cool the battery cell 1 more evenly.

[0070] In the technical solutions of some embodiments of the present application, the box body 2 includes side walls 21, a top wall 22 and a support frame 23. The side walls 21, the top wall 22 and the support frame 23 enclose a receiving space 2a. The receiving space 2a is used to receive the battery cell 1 and the coolant, so that the battery cell 1 can be better immersed in the coolant, so that the coolant can contact a larger surface area of ​​the battery cell 1, and the cooling efficiency of the coolant on the battery cell 1 can be better improved. The support frame 23 is located on a side of the side wall 21 away from the top wall 22 in the first direction X. The support frame 23 includes a bottom wall 231, a support plate 232 located on a side of the bottom wall 231 facing the top wall 22, and a flow channel 23a formed by the bottom wall 231 and the support plate 232. The support plate 232 can be used to support the battery cell 1. By opening a conducting opening 23b connecting the accommodating space 2a and the flow channel 23a on a side of the support plate 232 facing the accommodating space 2a, the coolant in the accommodating space 2a can flow into the flow channel 23a through the conducting opening 23b, and the coolant in the flow channel 23a can flow to the battery cell 1 through the conducting opening 23b and contact the surface of the battery cell 1 facing the support plate 232. The direct heat exchange area between the coolant and the battery cell 1 can be better increased, so that the battery cell 1 in the box body 2 can be cooled more evenly, the cooling capacity of the battery cell 1 can be better improved, and the service life of the battery cell 1 can be improved.

[0071] like Figure 4As shown, in some embodiments of the present application, there are various ways to set the shape and position of the conductive opening 23b. Optionally, the number of the conductive openings 23b may be multiple, and the multiple conductive openings 23b may be spaced apart in the second direction Y and / or the third direction Z, wherein the orthographic projection shape of the conductive opening 23b in the first direction X may be circular, elliptical, polygonal or irregular, etc.

[0072] Figure 5 It is a schematic structural diagram of the support frame 23 without the bottom wall 231 according to some other embodiments of the present application.

[0073] like Figure 5 As shown, optionally, the conductive opening 23b may be in a strip shape, for example, the projection of the conductive opening 23b in the first direction X may be in a straight strip shape, a Z-shaped strip shape or an S-shaped strip shape. Wherein, when the projection of the conductive opening 23b in the first direction X is in a straight strip shape, the conductive opening 23b may be extended and formed along the third direction Z and arranged at intervals in the second direction Y. Optionally, the third direction Z may be the length direction of the box body 2, that is, the third direction Z may be the direction in which the box body 2 has a larger size. When the accommodating space 2a contains a battery cell 1, a plurality of battery cells 1 may be arranged in sequence in the third direction Z. Optionally, a plurality of battery cells 1 may also be arranged in sequence in the second direction Y, wherein the number of battery cells 1 arranged in the third direction Z may be greater than the number of battery cells 1 arranged in the second direction Y. By setting the conducting openings 23b, they can be extended along the third direction Z and arranged at intervals in the second direction Y, so that the coolant can contact and exchange heat with a large number of battery cells 1 arranged in the third direction Z through the conducting openings 23b, so as to better cool a large number of battery cells 1 and improve the cooling efficiency.

[0074] For the convenience of description, the following embodiments are described by taking the conductive opening 23 b in a strip shape as an example.

[0075] According to some embodiments of the present application, optionally, the number of support plates 232 is at least two, the support plates 232 extend along the third direction Z and are spaced apart in the second direction Y, at least part of the flow channel 23a is formed between adjacent support plates 232, and the conducting opening 23b is formed on the side of the accommodating space 2a between adjacent support plates 232, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0076] Optionally, the support plate 232 can divide the flow channel 23a into a plurality of sub-flow channels 23c extending along the third direction Z and spaced apart in the second direction Y, and the connecting coolant can flow in each sub-flow channel 23c along the third direction Z to better perform heat exchange cooling on the battery cell 1.

[0077] Optionally, there are many ways to set the extension shape of the sub-channel 23c, and the extension shape of the sub-channel 23c can be set corresponding to the shape of the conducting opening 23b. For example, the projection of the sub-channel 23c in the first direction X can be a straight strip, a Z-shaped strip, or an S-shaped strip.

[0078] The support plates 232 extending along the third direction Z and spaced apart in the second direction Y can guide the coolant in the flow channel 23a to facilitate the flow of the coolant in the flow channel 23a along the third direction Z, so that the coolant can better cool the multiple battery cells 1 arranged in the third direction Z, thereby improving the cooling efficiency.

[0079] According to some embodiments of the present application, Figure 5 As shown, optionally, the support frame 23 also includes a frame 223 arranged on the side of the support plate 232 facing the accommodating space 2a, the frame 223 includes a first beam 233a extending along a third direction Z and spaced apart in the second direction Y, and / or the frame 223 includes a second beam 233b extending along the second direction Y and spaced apart in the third direction Z.

[0080] Optionally, the adjacent support plates 232 in the second direction Y may be connected to the second beam 233 b , so that the second beam 233 b may be used to limit the relative movement between the adjacent support plates 232 to fix the relative positions between the adjacent support plates 232 .

[0081] In some embodiments, the first beam 233a and the second beam 233b may be separate structures, and the first beam 233a and the second beam 233b may be connected by bolts or adhesively bonded. In other embodiments, the first beam 233a and the second beam 233b may be integrally formed.

[0082] The battery cell 1 can be arranged between adjacent first beams 233a in the second direction Y, and the first beam 233a can be used to limit the movement of the battery cell 1 in the second direction Y, and / or, the battery cell 1 can be arranged between adjacent second beams 233b in the third direction Z, and the second beam 233b can be used to limit the movement of the battery cell 1 in the third direction Z, so that the battery cell 1 can be better fixed in the box 2, and the structural stability of the battery 100 can be better improved.

[0083] In some embodiments of the present application, there are multiple ways to assemble the battery 100. Optionally, multiple battery cells 1 may be bonded together by adhesive strips first, and then the multiple battery cells 1 may be placed as a whole in the frame 223 to achieve assembly of the battery 100. The support plate 232 may be coated with colloid in advance so that the battery cells 1 can be bonded to the colloid on the support plate 232 after entering the frame 223.

[0084] In some embodiments of the present application, there are multiple ways to set the extension dimension of the first beam 233a in the third direction Z and the extension dimension of the second beam 233b in the second direction Y. In some optional embodiments, the extension dimension of the second beam 233b in the second direction Y may be greater than or equal to the extension dimension of the support plate 232 in the second direction Y, so that when the battery cell 1 is arranged between adjacent second beams 233b, in the third direction Z, the second beam 233b can play a better role in limiting the battery cell 1. Among them, when the battery cell 1 is arranged between adjacent second beams 233b, the second beam 233b can be used to press the battery cell 1 in the third direction Z, so that adjacent battery cells 1 are not prone to relative sliding in the second direction Y, so that the extension dimension of the first beam 233a in the third direction Z can be smaller than the extension dimension of the support plate 232 in the second direction Y. For example, the first beam 233a can be arranged at both ends of the second beam 233b in the second direction Y, and the adjacent first beams 233a in the third direction Z can be spaced apart, so that the operator can grasp the two sides of the battery cell 1 in the second direction Y, thereby facilitating the operator to place the battery cell 1 into the frame 223 or taking the battery cell 1 out of the frame 223.

[0085] Similarly, in other optional embodiments, the extension dimension of the first beam 233a in the third direction Z may be greater than or equal to the extension dimension of the support plate 232 in the third direction Z, the first beam 233a may be used to press the battery cell 1 in the second direction Y, and the extension dimension of the second beam 233b in the second direction Y may be smaller than the extension dimension of the support plate 232 in the second direction Y, so as to facilitate the operator to grasp the two sides of the battery cell 1 in the third direction Z, thereby facilitating the operator to place the battery cell 1 into the frame 223 or to facilitate the operator to take the battery cell 1 out of the frame 223.

[0086] Optionally, in other optional embodiments, the extension dimension of the first beam 233a in the third direction Z may be greater than or equal to the extension dimension of the support plate 232 in the third direction Z, and the extension dimension of the second beam 233b in the second direction Y may be greater than or equal to the extension dimension of the support plate 232 in the second direction Y, and the present application does not make any specific limitations on this.

[0087] Optionally, at least two first beams 233a may be spaced apart in the first direction X, or the first beam 233a may have a certain extension dimension in the first direction X to enhance the limiting effect of the first beam 233a on the battery cell 1; and / or, at least two second beams 233b may be spaced apart in the first direction X, or the second beam 233b may have a certain extension dimension in the first direction X to enhance the limiting effect of the second beam 233b on the battery cell 1.

[0088] According to some embodiments of the present application, Figure 5 As shown, optionally, the frame 223 and the support plate 232 are integrally formed.

[0089] By integrally forming the frame 223 and the support plate 232, the frame 223 can be prepared together with the support plate 232. When assembling the support frame 23, the frame 223 and the support plate 232 can be assembled with the bottom wall 231 as a whole, thereby facilitating the assembly of the support frame 23.

[0090] Figure 6 This is a schematic diagram of the exploded structure of the support frame 23 without the bottom wall 231 according to some embodiments of the present application.

[0091] According to some embodiments of the present application, Figure 6 As shown, optionally, the frame 223 can also be separately provided with the support plate 232, so as to facilitate the adjustment of the position of the first beam 233a in the frame 223 in the second direction Y, thereby facilitating the adjustment of the clamping force of the first beam 233a on the battery cell 1, and / or, so as to facilitate the adjustment of the position of the second beam 233b in the frame 223 in the third direction Z, thereby facilitating the adjustment of the clamping force of the second beam 233b on the battery cell 1.

[0092] Optionally, the frame 223 may be detachably connected to the support plate 232 to facilitate replacement of the frame 223 . For example, the frame 223 may be bolted to the support plate 232 .

[0093] According to some embodiments of the present application, Figures 4 to 6 As shown, optionally, the support frame 23 also includes a padding structure 234 arranged between the support plate 232 and the bottom wall 231, so that the bottom wall 231 and the support plate 232 are spaced apart, and at least part of the flow channel 23a is formed in the space between the bottom wall 231 and the support plate 232.

[0094] Optionally, there may be a plurality of raising structures 234 , and the plurality of raising structures 234 may support the support plate 232 more stably, so that the support plate 232 is not prone to shaking.

[0095] Optionally, the raising structure 234 may be disposed at an edge position of the support plate 232 in the second direction Y and / or the third direction Z, so that the raising structure 234 is not likely to block the coolant flowing in the flow channel 23a, thereby better improving the circulation efficiency of the coolant.

[0096] By setting a cushioning structure 234 between the support plate 232 and the bottom wall 231, the cushioning structure 234 can separate the support plate 232 from the bottom wall 231, so that a certain distance can be created between the support plate 232 and the bottom wall 231. The distance can be used to participate in forming the flow channel 23a, so that the flow channel 23a can have a larger size, so that more coolant can flow in the flow channel 23a, which can better improve the cooling effect of the coolant on the battery cell 1.

[0097] According to some embodiments of the present application, optionally, the padding structure 234 and the support plate 232 are integrally formed.

[0098] By integrally forming the raising structure 234 and the support plate 232, the raising structure 234 can be prepared together with the support plate 232. When assembling the support frame 23, the raising structure 234 and the support plate 232 can be assembled with the bottom wall 231 as a whole, thereby facilitating the assembly of the support frame 23.

[0099] Figure 7 It is a schematic diagram of the exploded structure of the support frame 23 and the battery cell 1 without the bottom wall 231 according to some embodiments of the present application.

[0100] According to some embodiments of the present application, Figure 7 As shown, optionally, the padding structure 234 may not be provided between the support plate 232 and the bottom wall 231, that is, the support plate 232 may be directly provided on the bottom wall 231, and the flow channel 23a may be formed only between adjacent support plates 232. By directly providing the support plate 232 on the bottom wall 231, the support frame 23 can have a smaller size in the first direction X, so as to better improve the structural compactness of the box body 2.

[0101] For the convenience of description, the following embodiments are described by taking an example in which no padding structure 234 is provided between the support plate 232 and the bottom wall 231 .

[0102] Figure 8 This is a schematic diagram of the structure of the box 2 of some embodiments of the present application.

[0103] According to some embodiments of the present application, Figure 8 As shown, optionally, the box body 2 also includes a liquid circulation component 24, and a liquid hole 2b is provided on at least one of the top wall 22, the side wall 21 and the support frame 23. The liquid circulation component 24 is connected to the liquid hole 2b. The liquid circulation component 24 is used to inject cooling liquid into the accommodating space 2a through the liquid hole 2b and / or to extract cooling liquid from the accommodating space 2a through the liquid hole 2b.

[0104] Optionally, the number of the liquid hole 2b may be at least one, wherein when the number of the liquid hole 2b is only one, the liquid circulation component 24 may inject coolant into the accommodating space 2a or extract the coolant in the accommodating space 2a through the liquid hole 2b. When the number of the liquid holes 2b is at least two, the liquid circulation component 24 may be connected to at least two liquid holes 2b, so that the liquid circulation component 24 may inject coolant into the accommodating space 2a through a part of the liquid holes 2b, and the liquid circulation component 24 may extract the coolant in the accommodating space 2a through another part of the liquid holes 2b, so that the work of injecting coolant and extracting coolant can be performed simultaneously, so as to improve the circulation efficiency of the coolant in the box 2.

[0105] Optionally, the liquid hole 2b may be arranged on the side wall 21. When the number of the liquid holes 2b is at least two, the distance between the liquid hole 2b for allowing the coolant to be injected and the base in the first direction X may be greater than the distance between the liquid hole 2b for allowing the coolant to flow out and the base in the first direction X, so that the coolant can enter from the liquid hole 2b with a higher horizontal position, and the coolant can flow out from the liquid hole 2b with a lower horizontal position, thereby further improving the circulation efficiency of the coolant in the box 2.

[0106] The liquid circulation component 24 can inject coolant into the accommodating space 2a so that coolant with a relatively suitable temperature can enter the accommodating space 2a to exchange heat with the battery cell 1. The liquid circulation component 24 can also extract the coolant in the accommodating space 2a so that the coolant with a higher temperature in the accommodating space 2a can be extracted to better take away the heat in the accommodating space 2a. While the liquid circulation component 24 injects and extracts the coolant, it can also make the coolant in the accommodating space 2a circulate better, thereby better improving the cooling effect in the box body 2.

[0107] Optionally, the liquid circulation component 24 may include a liquid storage part 241, a liquid injection tube 242, a liquid extraction tube 243 and a liquid pump 244, wherein the liquid storage part 241 can be used to contain coolant, the liquid injection tube 242 can connect the liquid storage part 241 with the liquid hole 2b for allowing the coolant to flow in, the liquid extraction tube 243 can connect the liquid storage part 241 with the liquid hole 2b for allowing the coolant to flow out, and the liquid pump 244 can be arranged in the pipeline of at least one of the liquid injection tube 242 and the liquid extraction tube 243. For example, the liquid pump 244 can be arranged in the pipeline of the liquid injection tube 242 to drive the coolant to be injected into the accommodating space 2a, and / or, the liquid pump 244 can be arranged in the pipeline of the liquid extraction tube 243 to drive the coolant to flow out of the accommodating space 2a, so that the coolant can circulate between the liquid storage part 241 and the box 2. Optionally, the liquid pump 244 may be only arranged in the pipeline of the liquid injection pipe 242. Under the hydraulic influence of the liquid pump 244 driving the coolant in the liquid storage part 241 to be injected into the accommodating space 2a, the cold zone liquid in the accommodating space 2a will also enter the liquid storage part 241 through the liquid extraction pipe 243.

[0108] According to some embodiments of the present application, Figure 8 As shown, optionally, the box body 2 also includes a temperature control component 25 connected between the liquid circulation component 24 and the liquid hole 2b, and the temperature control component 25 is used to heat the coolant flowing from the liquid circulation component 24 to the accommodating space 2a and / or to cool the coolant flowing from the accommodating space 2a to the liquid circulation component 24.

[0109] Optionally, the temperature control component 25 may include a heating component 251 for heating the coolant flowing from the liquid circulation component 24 to the accommodating space 2a, and / or the temperature control component 25 may include a cooling component 252 for cooling the coolant flowing from the accommodating space 2a to the liquid circulation component 24, wherein the heating component 251 may be arranged in the pipeline of the liquid injection pipe 242, and the cooling component 252 may be arranged in the pipeline of the liquid extraction pipe 243.

[0110] By setting the temperature control component 25, when the working environment temperature of the battery 100 is low, the temperature control component 25 can heat the coolant flowing from the liquid circulation component 24 to the storage space 2a, so that the coolant can better heat the battery cell 1 that has just started working to a certain extent, so as to facilitate the operation of the battery cell 1 and better extend the service life of the battery cell 1. When the battery cell 1 has been working for a period of time and the temperature of the battery cell 1 in the box 2 is high, the temperature control component 25 can cool the coolant flowing from the storage space 2a to the liquid circulation component 24 to reduce the temperature of the coolant drawn from the storage space 2a by the liquid circulation component 24, so that when the liquid circulation component 24 injects this part of the coolant into the storage space 2a, the coolant with a lower temperature can better cool the battery cell 1.

[0111] According to some embodiments of the present application, optionally, a safety hole 2c is provided on at least one of the top wall 22, the side wall 21 and the support frame 23, and the box body 2 also includes a safety valve 26 arranged at the safety hole 2c, and the safety valve 26 is used to add coolant to the accommodating space 2a, and / or the safety valve 26 is used to discharge the coolant or gas in the accommodating space 2a when the air pressure in the accommodating space 2a reaches an air pressure threshold.

[0112] Optionally, the number of the safety hole 2c and the safety valve 26 may be only one, and the safety valve 26 can be used to add coolant to the accommodating space 2a, and to discharge the coolant or gas in the accommodating space 2a when the air pressure in the accommodating space 2a reaches an air pressure threshold.

[0113] Optionally, the number of the safety hole 2c and the safety valve 26 can be multiple, for example, the number of the safety valve 26 can be three, and the three safety valves 26 can be used to add coolant to the accommodating space 2a, to discharge the coolant in the accommodating space 2a when the air pressure in the accommodating space 2a reaches the air pressure threshold, and to discharge the gas in the accommodating space 2a when the air pressure in the accommodating space 2a reaches the air pressure threshold. The setting position of each safety valve 26 and the corresponding safety hole 2c can be set according to the purpose of the safety valve 26.

[0114] By providing the safety valve 26, when the coolant cannot be added to the accommodation space 2a through the liquid hole 2b of the box 2, the coolant can be added to the accommodation space 2a by opening the safety valve 26. The safety valve 26 can also discharge the coolant or gas in the accommodation space 2a when the air pressure in the accommodation space 2a reaches the air pressure threshold, so that when the battery 100 is in an abnormal situation and overpressure or overheating occurs, the box 2 can directly release the overpressure and overheated gas or coolant to relieve the air pressure inside the box 2, so that the box 2 is not prone to bulging or even explosion, thereby being able to better improve the working reliability of the battery 100.

[0115] See also Figures 1 to 8 In the second aspect, the present application provides a battery 100, which includes a battery cell 1, a coolant, and a box body 2 of any of the above items. The battery cell 1 is located in the accommodating space 2a and is connected to the support plate 232 of the support frame 23. The projection of the battery cell 1 in the first direction X and the projection of the conductive opening 23b in the first direction X are at least partially overlapped; at least part of the coolant is located in the accommodating space 2a and the flow channel 23a.

[0116] Optionally, the coolant material may have good insulation properties and good heat exchange capacity, so that the coolant in contact with the battery cell 1 is not likely to cause a short circuit of the battery cell 1, and the coolant can better limit the thermal runaway and thermal diffusion of the battery cell 1. For example, the coolant material includes at least one of solvent refined mineral oil, hydrocracked mineral oil, deep hydroisomerized dewaxed base oil, polyalphaolefin synthetic oil, silicone oil, fluorinated liquid, synthetic ester, synthetic hydrocarbon and deionized water.

[0117] Optionally, the battery cell 1 may be located below the liquid surface of the coolant, that is, the battery cell 1 may be immersed in the coolant, so that a larger heat exchange area can be provided between the coolant and the battery cell 1 .

[0118] In some embodiments of the present application, there are multiple ways to connect the battery cell 1 to the support plate 232. Optionally, the battery cell 1 can be connected to the support plate 232 by bonding or bolting.

[0119] Optionally, the projection of at least part of the conductive opening 23b in the first direction X is staggered with the projection of the battery cell 1 in the first direction X, so that the cooling liquid can flow to the conductive opening 23b staggered with the battery cell 1 at the interval between adjacent battery cells 1, and flow into the flow channel 23a through the conductive opening 23b staggered with the battery cell 1, and then the cooling liquid in the flow channel 23a can flow to the battery cell 1 through the conductive opening 23b located below the battery cell 1 and contact the surface of the battery cell 1 facing the support plate 232, so as to cool the battery cell 1 more evenly.

[0120] In the technical solutions of some embodiments of the present application, the battery cell 1 located in the accommodating space 2a of the box body 2 can be well immersed in the coolant, so that the coolant can contact a larger surface area of ​​the battery cell 1, and the support plate 232 can be used to support the battery cell 1. By opening a conducting opening 23b connecting the accommodating space 2a and the flow channel 23a on the side of the support plate 232 facing the accommodating space 2a, and arranging the projection of the battery cell 1 in the first direction X and the projection of the conducting opening 23b in the first direction X to at least partially overlap, when the coolant in the accommodating space 2a flows into the flow channel 23a through the conducting opening 23b, the coolant in the flow channel 23a can flow to the battery cell 1 through the conducting opening 23b and contact the surface of the battery cell 1 facing the support plate 232, which can better increase the direct heat exchange area between the coolant and the battery cell 1, so that the battery cell 1 in the box body 2 can be cooled more evenly, and the cooling capacity of the battery 100 can be better improved, which is beneficial to improving the service life of the battery 100.

[0121] Fig. 9 This is a schematic diagram of the structure of the position-limiting member 3 and the battery cell 1 in some embodiments of the present application.

[0122] Fig.10 Schematic diagram of the structure of the position-limiting member 3 and the battery cell 1 in some other embodiments of the present application. Fig.11 This is a schematic diagram of the structure of the position-limiting member 3 and the battery cell 1 in some other embodiments of the present application. Fig.12 Schematic diagrams of the structures of the position-limiting member 3 and the battery cell 1 according to some other embodiments of the present application.

[0123] According to some embodiments of the present application, Figures 9 to 12 As shown, optionally, the number of battery cells 1 is at least two, and the battery 100 further includes a limiting member 3 arranged between adjacent battery cells 1, the limiting member 3 and the battery cells 1 on both sides thereof enclose a limiting gap 3a, and the limiting gap 3a is connected to the accommodating space 2a.

[0124] In some embodiments of the present application, there are multiple ways to set the shape of the limiting member 3, wherein there are also multiple ways to set the shape of the limiting gap 3a formed by the limiting member 3 and the battery cells 1 on both sides thereof.

[0125] In some optional embodiments, the limiting member 3 may be in a strip shape, and the strip-shaped limiting member 3 may be enclosed with the battery cells 1 on both sides thereof to form a limiting gap 3a, wherein the structure enclosed by the limiting member 3 and the battery cells 1 may be an open structure, that is, each limiting gap 3a may have a limiting opening 3b on the side facing the accommodating space 2a, and the limiting gap 3a may be connected to the accommodating space 2a through the limiting opening 3b.

[0126] Optional, such as Fig. 9 and Fig.10 As shown, in the limiting member 3 located between the battery cells 1 adjacent to each other in the second direction Y, the limiting member 3 may be extended and formed along the first direction X and / or the third direction Z, wherein the number of the limiting members 3 may be one or at least two. For example, when the number of the limiting members 3 is at least two, at least two limiting members 3 may extend along the first direction X and be spaced apart in the third direction Z, so that the limiting gap 3a formed by the limiting member 3 and the battery cell 1 may extend along the first direction X, so that the coolant may flow into the limiting gap 3a from the first direction X to cool the battery cell 1, and / or, when the number of the limiting members 3 is at least two, at least two limiting members 3 may extend along the third direction Z and be spaced apart in the first direction X, so that the limiting gap 3a formed by the limiting member 3 and the battery cell 1 may extend along the third direction Z, so that the coolant may flow into the limiting gap 3a from the third direction Z to cool the battery cell 1.

[0127] Optional, such as Fig.11 and Fig.12 As shown, in the limiting member 3 located between the battery cells 1 adjacent to each other in the third direction Z, the limiting member 3 may be extended and formed along the first direction X and / or the second direction Y, wherein the number of the limiting members 3 may be one or at least two. For example, when the number of the limiting members 3 is at least two, at least two limiting members 3 may extend along the first direction X and be spaced apart in the second direction Y, so that the limiting gap 3a formed by the limiting member 3 and the battery cell 1 may extend along the first direction X, so that the coolant may flow into the limiting gap 3a from the first direction X to cool the battery cell 1, and / or, when the number of the limiting members 3 is at least two, at least two limiting members 3 may extend along the second direction Y and be spaced apart in the first direction X, so that the limiting gap 3a formed by the limiting member 3 and the battery cell 1 may extend along the second direction Y, so that the coolant may flow into the limiting gap 3a from the second direction Y to cool the battery cell 1.

[0128] Optionally, the material of the stopper 3 may include an elastic material, so that the stopper 3 can have good deformability, so that when the battery cell 1 expands, the stopper 3 can produce a certain elastic deformation, so that the stopper 3 is not likely to produce excessive pressure on the battery cell 1, thereby better improving the working reliability of the battery 100. Optionally, the material of the stopper 3 may include at least one of a rubber strip, rubber, and foam.

[0129] The limiting member 3 can separate two adjacent battery cells 1 so that there is a certain distance between the two adjacent battery cells 1, wherein the limiting member 3 and the battery cells 1 on both sides thereof are enclosed to form a limiting gap 3a, and the limiting gap 3a is connected to the accommodating space 2a by setting the limiting gap 3a, so that the coolant in the accommodating space 2a can enter the limiting gap 3a and cool the relative surfaces between the two adjacent battery cells 1, so as to further increase the heat exchange area between the coolant and the battery cells 1, thereby better improving the cooling uniformity of the battery cells 1 in the box body 2.

[0130] Fig.13 Schematic diagram of the exploded structure of the battery 100 according to some other embodiments of the present application.

[0131] like Fig.13 As shown, according to some embodiments of the present application, optionally, the battery 100 also includes at least two end plates 4 arranged in the accommodating space 2a, the end plates 4 are connected to the support frame 23 and at least two end plates 4 are arranged at intervals, the battery cell 1 is located in the gap between adjacent end plates 4, and the end plates 4 are provided with a through hole 4a that penetrates and extends in a direction pointing to the battery cell 1, and the through hole 4a is connected to the accommodating space 2a.

[0132] In some embodiments of the present application, there are multiple ways to connect the end plate 4 and the support frame 23. Optionally, the end plate 4 can be connected to the support frame 23 by bolts or bonding. For example, the end plate 4 can be connected to the frame 223 and / or the support plate 232 by bolts or bonding.

[0133] Optionally, at least two end plates 4 may be spaced apart in the second direction Y, and the battery cell 1 may be located in the gap between adjacent end plates 4 in the second direction Y, and / or, at least two end plates 4 may be spaced apart in the third direction Z, and the battery cell 1 may be located in the gap between adjacent end plates 4 in the third direction Z.

[0134] Optionally, the material of the end plate 4 may include at least one of aluminum alloy, steel and plastic. Optionally, the end plate 4 may be formed by extrusion, casting or injection molding.

[0135] Optionally, the frame 223 may be disposed around at least a portion of the battery cell 1 , so that when the battery cell 1 is accommodated in the box body 2 , the battery cell 1 may be better enclosed by the frame 223 , thereby being able to better fix the battery cell 1 in the box body 2 .

[0136] Optionally, the end plate 4 may be connected to the side of the frame 223 away from the bottom wall 231. For example, the end plate 4 may be connected to the side of the frame 223 away from the bottom wall 231 by bolts or bonding.

[0137] In some embodiments of the present application, there are multiple ways to assemble the battery 100. Optionally, multiple battery cells 1 and the end plate 4 may be clamped first, for example, a cable tie may be used to assist in clamping the multiple battery cells 1 and the end plate 4, and then the multiple battery cells 1 are placed in the frame 223, and the end plate 4 and the frame 223 are bolted or bonded to achieve assembly of the battery 100. The support plate 232 may be coated with colloid in advance so that the battery cells 1 can be bonded to the colloid on the support plate 232 after entering the frame 223.

[0138] The battery cell 1 can be clamped between the adjacent end plates 4, and the end plates 4 connected to the support frame 23 can better limit the battery cell 1. By opening a through hole 4a that penetrates and extends in the direction pointing to the battery cell 1 on the end plate 4, the coolant in the accommodating space 2a can flow through the through hole 4a to the surface of the battery cell 1 opposite to the end plate 4, so as to further increase the heat exchange area between the coolant and the battery cell 1, thereby better improving the cooling uniformity of the battery cell 1 in the box 2.

[0139] According to some embodiments of the present application, some further embodiments of the present application further provide an electric device, the electric device comprising the battery 100 described in any of the above embodiments, the battery 100 being used to provide electric energy.

[0140] The power-consuming device may be any of the aforementioned devices or systems using the battery 100 .

[0141] Please refer to Figures 1 to 13According to some embodiments of the present application, a box body 2 is provided in some embodiments of the present application, and the box body 2 includes a side wall 21, a top wall 22 and a support frame 23, and the top wall 22 is located on one side of the side wall 21 in the first direction X. The side wall 21, the top wall 22 and the support frame 23 enclose a receiving space 2a, and the receiving space 2a is used to receive the battery cell 1 and the coolant. A safety hole 2c is provided through at least one of the top wall 22, the side wall 21 and the support frame 23, and the box body 2 also includes a safety valve 26 provided at the safety hole 2c, and the safety valve 26 is used to add coolant to the receiving space 2a, and / or, the safety valve 26 is used to discharge the coolant or gas in the receiving space 2a when the air pressure in the receiving space 2a reaches the air pressure threshold. The box body 2 further includes a liquid circulation component 24. A liquid hole 2b is provided through at least one of the top wall 22, the side wall 21 and the support frame 23. The liquid circulation component 24 is in communication with the liquid hole 2b. The liquid circulation component 24 is used to inject cooling liquid into the accommodation space 2a through the liquid hole 2b and / or to extract the cooling liquid in the accommodation space 2a through the liquid hole 2b. The box body 2 further includes a temperature control component 25 connected between the liquid circulation component 24 and the liquid hole 2b. The temperature control component 25 is used to heat the cooling liquid flowing from the liquid circulation component 24 to the accommodation space 2a and / or to cool the cooling liquid flowing from the accommodation space 2a to the liquid circulation component 24. The support frame 23 is located on the side of the side wall 21 away from the top wall 22 in the first direction X, and the support frame 23 includes a bottom wall 231, a support plate 232 located on the side of the bottom wall 231 facing the top wall 22, and a flow channel 23a formed by the bottom wall 231 and the support plate 232, wherein a conducting opening 23b connecting the accommodating space 2a and the flow channel 23a is opened on the side of the support plate 232 facing the accommodating space 2a, and the number of the support plates 232 is at least two, the support plates 232 extend along the third direction Z and are spaced apart in the second direction Y, at least part of the flow channel 23a is formed between adjacent support plates 232, and the conducting opening 23b is formed between adjacent support plates 232 on the side facing the accommodating space 2a. The support frame 23 further includes a frame 223 disposed on the side of the support plate 232 facing the accommodating space 2a, the frame 223 and the support plate 232 are integrally formed, the frame 223 includes a first beam 233a extending along the third direction Z and spaced apart in the second direction Y, and / or the frame 223 includes a second beam 233b extending along the second direction Y and spaced apart in the third direction Z. The support frame 23 further includes a cushioning structure 234 disposed between the support plate 232 and the bottom wall 231, so that the bottom wall 231 and the support plate 232 are spaced apart, the cushioning structure 234 is integrally formed with the support plate 232, and at least part of the flow channel 23a is formed in the space between the bottom wall 231 and the support plate 232.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A box, characterized in that: The box body comprises: Side wall; A top wall, located on one side of the side wall in the first direction; a support frame, located on the side of the side wall away from the top wall in the first direction, the support frame comprising a bottom wall, a support plate located on the side of the bottom wall facing the top wall, and a flow channel formed by the bottom wall and the support plate, The side walls, the top wall and the support frame together form a storage space for accommodating battery cells and coolant. The support plate is provided with a conducting opening on one side of the storage space for connecting the storage space with the flow channel.

2. The box according to claim 1, characterized in that: The number of the support plates is at least two, the support plates extend along the third direction and are spaced apart in the second direction, at least part of the flow channel is formed between adjacent support plates, the conducting opening is formed on a side of the accommodating space between adjacent support plates, and the first direction, the second direction and the third direction intersect each other.

3. The box according to claim 2, characterized in that: The support frame also includes a frame arranged on the side of the support plate facing the accommodating space, the frame includes a first beam extending along the third direction and spaced apart in the second direction, and / or the frame includes a second beam extending along the second direction and spaced apart in the third direction.

4. The box according to claim 3, characterized in that: The frame and the support plate are integrally formed.

5. The box according to claim 1, characterized in that: The support frame further includes a padding structure disposed between the support plate and the bottom wall, so that the bottom wall and the support plate are spaced apart, and at least a portion of the flow channel is formed in the space between the bottom wall and the support plate.

6. The box according to claim 5, characterized in that: The cushioning structure and the supporting plate are integrally formed.

7. The box according to any one of claims 1 to 6, characterized in that: The box body also includes a liquid circulation component, and a liquid hole is provided on at least one of the top wall, the side wall and the support frame. The liquid circulation component is connected to the liquid hole, and the liquid circulation component is used to inject the coolant into the accommodating space through the liquid hole and / or to extract the coolant in the accommodating space through the liquid hole.

8. The box according to claim 7, characterized in that: The box body also includes a temperature control component connected between the liquid circulation component and the liquid hole, and the temperature control component is used to heat the coolant flowing from the liquid circulation component to the accommodating space and / or to cool the coolant flowing from the accommodating space to the liquid circulation component.

9. The box according to any one of claims 1 to 6, characterized in that: A safety hole is provided through-going through the top wall, the side wall and at least one of the support frame, and the box body further comprises a safety valve arranged at the safety hole, wherein the safety valve is used for replenishing the coolant into the accommodating space, and / or the safety valve is used for discharging the coolant or gas in the accommodating space when the air pressure in the accommodating space reaches an air pressure threshold.

10. A battery, characterized in that: include: The box according to any one of claims 1 to 9, A battery cell is located in the accommodation space and connected to the support plate of the support frame, wherein a projection of the battery cell in the first direction and a projection of the conducting opening in the first direction are at least partially overlapped; The cooling liquid is at least partially located in the accommodating space and the flow channel.

11. The battery according to claim 10, characterized in that The number of the battery cells is at least two, and the battery further comprises a limiting member disposed between adjacent battery cells, the limiting member and the battery cells on both sides thereof are combined to form a limiting gap, and the limiting gap is communicated with the accommodating space.

12. The battery according to any one of claims 10 or 11, characterized in that: The battery also includes at least two end plates arranged in the accommodating space, the end plates are connected to the support frame and at least two of the end plates are spaced apart, the battery cell is located in the gap between adjacent end plates, the end plates are provided with through holes that penetrate through and extend in a direction pointing to the battery cell, and the through holes are connected to the accommodating space.

13. An electrical device, characterized in that: A battery according to any one of claims 10 to 12, wherein the battery is used to provide electrical energy.

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