Battery and electric device

Abstract

The utility model discloses a battery and a power utilization device. The battery comprises a battery monomer, a box body and a first spoiler, a cavity for accommodating a battery monomer is formed in the box body, the box body is provided with an inlet and an outlet which are communicated with the cavity, the inlet is used for allowing a heat exchange medium to enter the cavity, the outlet is used for discharging the heat exchange medium, and the box body is provided with a first wall in a first direction. The first spoiler is arranged in the cavity, and in the first direction, the inlet is located in one side of the first spoiler, and the outlet is located in the other side of the first spoiler. In the first direction, the first spoiler and the first wall are arranged in a spaced mode and form a first flow channel, and the first flow channel communicates with the inlet and allows the heat exchange medium to flow in the second direction. The first spoiler is provided with a second flow channel penetrating in the first direction, the second flow channel communicates with the outlet and the first flow channel and allows the heat exchange medium to flow in the first direction, and the first direction is perpendicular to the second direction. According to the technical scheme provided by the invention, the reliability of the battery can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] In the development of battery technology, how to improve battery reliability is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a battery and an electrical device. The technical solution provided in the present application can effectively improve the reliability of the battery.

[0005] In the first aspect, the present application provides a battery, which includes a battery cell, a box and a first spoiler. A chamber for accommodating the battery cell is formed inside the box, and the box has an inlet and an outlet connected to the chamber, the inlet is used for a heat exchange medium to enter the chamber, and the outlet is used to discharge the heat exchange medium, and the heat exchange medium is used to adjust the temperature of the battery cell, and the box has a first wall in the first direction. The first spoiler is arranged in the chamber, and along the first direction, the inlet is located on one side of the first spoiler, and the outlet is located on the other side of the first spoiler. Among them, along the first direction, the first spoiler is spaced apart from the first wall and forms a first flow channel, the first flow channel connects the inlet and allows the heat exchange medium to flow along the second direction; the first spoiler is provided with a second flow channel that runs through the first direction, the second flow channel connects the outlet and the first flow channel and allows the heat exchange medium to flow along the first direction, and the first direction and the second direction are perpendicular to each other.

[0006] In the above scheme, by setting the first spoiler, the flow direction of the heat exchange medium in the chamber can be changed, so that the heat exchange medium can flow in the first direction and the second direction, increase the flow path of the heat exchange medium in the chamber, and improve the flow turbulence of the heat exchange medium, so that the heat exchange medium can fully act on the battery cell, improve the thermal management efficiency of the battery cell, reduce the risk of thermal runaway of the battery cell, and thus make the battery have higher reliability.

[0007] According to some embodiments of the present application, the first spoiler is formed with a first through hole, the first through hole penetrates the first spoiler along a first direction, and the battery cell is inserted into the first through hole.

[0008] In the above scheme, by setting the first through hole, on the one hand, it can play a positioning role in the assembly of the battery cell, and on the other hand, the first spoiler can be constrained by the battery cell and be in a relatively stable state in the chamber, thereby reducing the interference of the heat exchange medium flow on the first spoiler, so that the first spoiler can effectively play a spoiler role, improve the heat exchange efficiency of the heat exchange medium, reduce the risk of thermal runaway of the battery cell, and improve the reliability of the battery.

[0009] According to some embodiments of the present application, there are multiple battery cells, the multiple battery cells are arranged along the second direction, there are multiple first through holes and they are arranged corresponding to the battery cells. There are multiple second flow channels, and the second flow channels are arranged between two adjacent first through holes.

[0010] The above scheme, by setting up multiple second flow channels, and the second flow channels are set between adjacent first through holes, can enable the heat exchange medium flowing along the first direction to act on each battery cell, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell, and further improving the reliability of the battery.

[0011] According to some embodiments of the present application, along the first direction, the first spoiler has a first surface facing the first wall, the first surface is protruding with a first guide portion, the first guide portion is arranged corresponding to the second flow channel, and is used to guide the heat exchange medium from the first flow channel to the second flow channel.

[0012] In the above scheme, by setting the first guide part, the heat exchange medium in the first flow channel can be guided to flow to the second flow channel, thereby effectively changing the flow direction of the heat exchange medium, improving the flow turbulence of the heat exchange medium, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell, and further improving the reliability of the battery.

[0013] According to some embodiments of the present application, the first guide portion is disposed around a hole wall of the first through hole.

[0014] In the above scheme, by setting the first guide part to be arranged around the hole wall of the first through hole, the first guide part can be fitted to the wall surface of the battery cell, thereby improving the space utilization of the first guide part and reducing the space occupied by the first guide part, thereby making the internal structure of the battery compact and making the battery have a higher volume energy density.

[0015] According to some embodiments of the present application, the battery further includes a second spoiler, the second spoiler is formed with a second through hole, the second through hole penetrates the second spoiler along the first direction, and the battery cell is penetrated through the second through hole.

[0016] The above scheme, by providing the second spoiler, on the one hand, can improve the assembly efficiency of the battery monomer through the cooperation between the second through hole and the battery monomer, so that the battery monomer is stably in the chamber; on the other hand, because the second spoiler is inside the box, it can change the flow direction of the heat exchange medium, further improve the flow turbulence of the heat exchange medium, increase the flow path of the heat exchange medium, and make the heat exchange medium fully act on the battery monomer, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery monomer, and further improving the reliability of the battery.

[0017] According to some embodiments of the present application, the housing further comprises a second wall, and the first wall and the second wall are opposite to each other along the first direction. The first spoiler and the second spoiler are arranged at intervals in the first direction to form a third flow channel, and the third flow channel is for the heat exchange medium to flow along the second direction. The second spoiler is arranged at intervals with the second wall to form a fourth flow channel, and the fourth flow channel is for the heat exchange medium to flow along the second direction. The first flow channel is connected to the third flow channel, and the third flow channel is connected to the outlet through the fourth flow channel.

[0018] In the above scheme, by setting the second spoiler, the heat exchange medium is discharged from the box body only after flowing through the first flow channel, the second flow channel, the third flow channel and the fourth flow channel, which can improve the flow path of the heat exchange medium in the chamber, so that the heat exchange medium can fully act on the battery cell, effectively improve the heat exchange efficiency of the heat exchange medium, reduce the risk of thermal runaway of the battery cell, and thus improve the reliability of the battery.

[0019] According to some embodiments of the present application, along the second direction, the box body has a third wall and a fourth wall opposite to each other. Along the second direction, one end of the first spoiler is connected to the third wall, and the other end of the first spoiler is spaced apart from the fourth wall to form a first gap, and the first gap connects the first flow channel and the third flow channel.

[0020] In the above scheme, by spacing the first spoiler and the fourth wall to form a first gap, the heat exchange medium can flow through the first flow channel and then enter the third flow channel through the first gap, thereby fully contacting the battery cell, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell, and thus improving the reliability of the battery.

[0021] According to some embodiments of the present application, the inlet is arranged on the third wall, and the outlet is arranged on the fourth wall.

[0022] In the above scheme, by respectively arranging the inlet and the outlet on the third wall and the fourth wall arranged opposite to each other, the flow path of the heat exchange medium in the chamber can be improved, so that the heat exchange medium can fully regulate the temperature of the battery cell, improve the heat exchange efficiency of the battery cell, thereby reducing the risk of thermal runaway of the battery cell, and thus making the battery have higher reliability.

[0023] According to some embodiments of the present application, along the second direction, one end of the second spoiler is connected to the fourth wall, and the other end of the second spoiler is spaced apart from the third wall to form a second gap, and the second gap connects the third flow channel and the fourth flow channel.

[0024] In the above scheme, by spacing the second spoiler and the third wall to form a second gap, the heat exchange medium can flow through the third flow channel and then enter the fourth flow channel through the second gap, thereby fully contacting the battery cell, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell, and thus improving the reliability of the battery.

[0025] According to some embodiments of the present application, the second spoiler is provided with a fifth flow channel penetrating along the first direction, the fifth flow channel connects the third flow channel and the fourth flow channel and allows the heat exchange medium to flow along the first direction.

[0026] In the above scheme, by setting up the fifth flow channel, the flow direction of the heat exchange medium can be changed, so that the heat exchange medium located in the third flow channel can flow to the fourth flow channel along the first direction through the fifth flow channel, so that the heat exchange medium can fully act on the battery cell, improve the heat exchange efficiency of the heat exchange medium, reduce the risk of thermal runaway of the battery cell, and thus make the battery have higher reliability.

[0027] According to some embodiments of the present application, along the first direction, the second spoiler has a second surface facing the first spoiler, and the second surface is protruding with a second guide portion, which is arranged corresponding to the fifth flow channel and is used to guide the heat exchange medium from the third flow channel to the fifth flow channel.

[0028] In the above scheme, by setting the second guide part, the heat exchange medium in the third flow channel can be guided to flow to the fifth flow channel, thereby effectively changing the flow direction of the heat exchange medium, improving the flow turbulence of the heat exchange medium, improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell, and thus improving the reliability of the battery.

[0029] According to some embodiments of the present application, the second guide portion is disposed around a hole wall of the second through hole.

[0030] In the above scheme, by arranging the second guide portion to be arranged around the hole wall of the second through hole, the second guide portion can be fitted to the wall surface of the battery cell, thereby improving the space utilization of the second guide portion and reducing the space occupied by the second guide portion, thereby making the internal structure of the battery compact and enabling the battery to have a higher volume energy density.

[0031] According to some embodiments of the present application, along the direction of gravity, the inlet is located below the outlet.

[0032] In the above scheme, the inlet is set at a lower position and the outlet is set at a higher position, which is conducive to the heat exchange medium to immerse the battery cell as much as possible, improve the heat exchange efficiency of the heat exchange medium, reduce the risk of thermal runaway of the battery cell, and thus make the battery have higher reliability.

[0033] According to some embodiments of the present application, the battery cell is a cylindrical battery cell.

[0034] In a second aspect, the present application provides an electrical device, the electrical device comprising a battery provided in any one of the first aspects. The battery is used to provide electrical energy.

[0035] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the structure of a vehicle in some embodiments of the present application;

[0038] Figure 2 A schematic diagram of a battery in some embodiments of the present application;

[0039] Figure 3 A three-dimensional exploded view of a battery in some embodiments of the present application;

[0040] Figure 4 A schematic diagram of a partial structure inside a battery in some embodiments of the present application;

[0041] Figure 5 A three-dimensional schematic diagram of a first spoiler in some embodiments of the present application;

[0042] Figure 6 This is a schematic diagram of the structure of the first spoiler in some embodiments of the present application;

[0043] Figure 7 Schematic diagram of the second spoiler in some embodiments of the present application.

[0044] Icons: 100-battery; 10-housing; 10a-upper housing; 10b-lower housing; 10c-inlet; 10d-outlet; 11-first wall; 12-second wall; 13-third wall; 14-fourth wall; 15-fifth wall; 16-sixth wall; 20-battery cell; 21-first fixing member; 22-second fixing member; 30-first spoiler; 31-first through hole; 32-first branch hole; 40-first guide; 50-second spoiler; 51-second through hole; 52-second branch hole; 60-second guide; 71-first flow channel; 72-second flow channel; 73-third flow channel; 74-fourth flow channel; 75-fifth flow channel; 76-first notch; 77-second notch; z-first direction; x-second direction; y-third direction; 1000-vehicle; 200-controller; 300-motor. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0047] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0048] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0050] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0051] The term "plurality" used in the present application refers to two or more (including two).

[0052] In the present application, 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 the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0053] 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. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0054] At present, the battery includes a battery cell and a casing, and the battery cell is contained in the casing. In order to keep the battery cell at a suitable temperature to reduce the risk of thermal runaway of the battery cell or improve the charge and discharge performance of the battery cell, in some batteries, a heat exchange medium is often passed into the casing, and the heat exchange medium acts on the battery cell in an immersed manner, thereby adjusting the temperature of the battery cell. However, in current batteries, the heat exchange medium enters and exits directly and flows in a single direction. The flow turbulence of the heat exchange medium is not strong, and it cannot effectively act on the battery cell, resulting in low heat exchange efficiency of the heat exchange medium, and the temperature of the battery cell cannot be effectively adjusted, resulting in a high risk of thermal runaway of the battery cell, which in turn affects the reliability of the battery.

[0055] In view of this, in order to improve the problem that the flow turbulence of the heat exchange medium is not strong and the temperature of the battery cell cannot be effectively adjusted, some embodiments of the present application provide a battery, the battery includes a battery cell, a box and a first spoiler. A chamber for accommodating the battery cell is formed inside the box, the box has an inlet and an outlet connected to the chamber, the inlet is used for the heat exchange medium to enter the chamber, the outlet is used to discharge the heat exchange medium, the heat exchange medium is used to adjust the temperature of the battery cell, and the box has a first wall in the first direction. The first spoiler is arranged in the chamber, along the first direction, the inlet is located on one side of the first spoiler, and the outlet is located on the other side of the first spoiler. Among them, along the first direction, the first spoiler is spaced from the first wall and forms a first flow channel, the first flow channel connects the inlet and the heat exchange medium flows along the second direction. The first spoiler is provided with a second flow channel that runs through the first direction, the second flow channel connects the outlet and the first flow channel and the heat exchange medium flows along the first direction, and the first direction and the second direction are perpendicular to each other.

[0056] In the above scheme, by arranging a first spoiler in the chamber, the flow direction of the heat exchange medium in the chamber can be changed, so that the heat exchange medium can flow in the first direction and the second direction, thereby increasing the flow path of the heat exchange medium in the chamber and improving the flow spoiler of the heat exchange medium, so that the heat exchange medium can fully act on the battery cell, improve the thermal management efficiency of the battery cell, thereby reducing the risk of thermal runaway of the battery cell, and thus making the battery have higher reliability.

[0057] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0058] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a new energy vehicle, which may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0059] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0060] Figure 1 This is a schematic diagram of the structure of a vehicle in some embodiments of the present application.

[0061] A controller 200, a motor 300 and a battery 100 may be disposed inside the vehicle 1000, and the controller 200 is used to control the battery 100 to power the motor 300. For example, the battery 100 may be disposed at the bottom, front or rear 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, for the circuit system of the vehicle 1000, for example, for the working power requirements during the start-up, navigation and operation of the vehicle 1000. In another embodiment of the present application, the battery 100 may not only be used as an operating power source for the vehicle 1000, but may also be used 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.

[0062] According to some embodiments of the present application, a battery 100 is provided. Figure 2-Figure 4 , Figure 2 is a schematic diagram of a battery 100 in some embodiments of the present application, Figure 3 This is a three-dimensional exploded view of a battery 100 in some embodiments of the present application. Figure 4 Schematic diagram of the partial structure inside the battery 100 in some embodiments of the present application.

[0063] The battery 100 includes a battery cell 20, a box 10, and a first spoiler 30. A chamber for accommodating the battery cell 20 is formed inside the box 10. The box 10 has an inlet 10c and an outlet 10d connected to the chamber. The inlet 10c is used for a heat exchange medium to enter the chamber, and the outlet 10d is used for discharging the heat exchange medium. The heat exchange medium is used to adjust the temperature of the battery cell 20. The box 10 has a first wall 11 in the first direction z. The first spoiler 30 is arranged in the chamber. Along the first direction z, the inlet 10c is located on one side of the first spoiler 30, and the outlet 10d is located on the other side of the first spoiler 30. Among them, along the first direction z, the first spoiler 30 is spaced apart from the first wall 11 and forms a first flow channel 71. The first flow channel 71 is connected to the inlet 10c and allows the heat exchange medium to flow along the second direction x. The first spoiler 30 is provided with a second flow channel 72 penetrating along the first direction z. The second flow channel 72 connects the outlet 10d and the first flow channel 71 and allows the heat exchange medium to flow along the first direction z. The first direction z and the second direction x are perpendicular to each other.

[0064] The box 10 is used to provide a chamber for the battery cell 20, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a lower box 10b and an upper box 10a, and the lower box 10b and the upper box 10a cover each other, and the lower box 10b and the upper box 10a jointly define a chamber for accommodating the battery cell 20. The lower box 10b can be a hollow structure with one end open, and the upper box 10a can be a plate-like structure, and the upper box 10a covers the open side of the lower box 10b, so that the lower box 10b and the upper box 10a jointly define a chamber; the lower box 10b and the upper box 10a can also be hollow structures with one side open, and the open side of the lower box 10b covers the open side of the upper box 10a. Of course, the box 10 formed by the lower box 10b and the upper box 10a can be a variety of shapes, such as a cylinder, a cuboid, etc. In some embodiments, the connection relationship between the upper box body 10a and the lower box body 10b includes but is not limited to riveting, welding, screw connection or other connection methods.

[0065] In the battery 100, the battery cell 20 may be one or more, and each battery cell 20 may be fixed to the case 10 by a connector (such as a bolt), or each battery cell 20 may be fixed to the case 10 by bonding. Exemplarily, the battery 100 further includes a first fixing member 21 and a second fixing member 22, the first fixing member 21 may be a bottom bracket, the bottom bracket is disposed at the bottom of the chamber of the case 10, the bottom bracket is formed with a receiving groove, and the receiving groove may receive the bottom of the battery cell 20. The second fixing member 22 may be a top bracket, the top bracket is disposed at the top of the chamber of the case 10, the top bracket may be formed with a through groove for receiving the top of the battery cell 20, and the electrode lead portion of the battery cell 20 may be exposed to the through groove. The electrode lead portions of multiple battery cells 20 may be connected by a current collecting member.

[0066] The heat exchange medium may be a fluid (liquid) or a gas, and the heat exchange medium is used to exchange heat with the battery cell 20 to achieve heating or cooling of the battery cell 20. For example, in some embodiments, the heat exchange medium may be a coolant, which enters the chamber from the inlet 10c of the housing 10, exchanges heat with the battery cell 20 in the chamber to adjust the temperature of the battery cell 20, and finally the coolant is discharged from the outlet 10d of the housing 10.

[0067] The “inlet 10c” can be understood as that the external heat exchange medium can enter the chamber of the box body 10 through the inlet 10c to exchange heat with the battery cells 20 in the chamber. In some embodiments, the wall of the box body 10 has a portion protruding outward, which can form the inlet 10c communicating with the chamber. The protruding portion can be connected to a pipeline to pass the heat exchange medium into the battery 100 through a storage device for storing the heat exchange medium outside the battery 100.

[0068] The “outlet 10d” can be understood as the heat exchange medium in the chamber can be discharged from the box 10 through the outlet 10d. To this end, the outlet 10d and the inlet 10c of the box 10 can realize the circulation of the heat exchange medium. In some embodiments, the wall of the box 10 has a protruding portion that can form the outlet 10d communicating with the chamber, and the protruding portion can be connected to a pipeline to discharge the heat exchange medium in the chamber to a storage device for storing the heat exchange medium outside the battery 100.

[0069] In some embodiments, the inlet 10c and the outlet 10d may be disposed on different walls of the housing 10. In other embodiments, the inlet 10c and the outlet 10d may be disposed on the same wall of the housing 10. Exemplarily, along a first direction z, the housing 10 has a first wall 11 and a second wall 12 that are opposite to each other, and along a second direction x, the housing 10 has a third wall 13 and a fourth wall 14 that are opposite to each other, and the first direction z and the second direction x are perpendicular to each other. The inlet 10c may be disposed on the first wall 11, the second wall 12, the third wall 13, or the fourth wall 14. The outlet 10d may be disposed on the first wall 11, the second wall 12, the third wall 13, or the fourth wall 14.

[0070] The first wall 11 is a wall portion of the box 10 in the first direction z. In some embodiments, the first direction z may be the height direction of the box 10, the first direction z may also be the gravity direction, the first wall 11 may be the bottom wall of the box 10, in which case the first spoiler 30 may be considered to be disposed horizontally. In other embodiments, the first direction z may be a horizontal direction, the first wall 11 may be a side wall of the box 10, in which case the first spoiler 30 may be considered to be disposed vertically.

[0071] The first spoiler 30 is a component disposed inside the housing 10 for disrupting the flow direction of the heat exchange medium. In some embodiments, the first spoiler 30 is plate-shaped. In some embodiments, the first spoiler 30 is connected to the wall of the housing 10, and the connection relationship between the first spoiler 30 and the wall of the housing 10 includes but is not limited to bonding, welding or screw connection.

[0072] “Along the first direction z, the inlet 10c is located on one side of the first spoiler 30, and the outlet 10d is located on the other side of the first spoiler 30” can be understood as, the heat exchange medium will be affected by the first spoiler 30 in the process from entering the chamber to being discharged from the chamber, that is, the first spoiler 30 will interfere with the flow direction of the heat exchange medium to increase the flow disturbance of the heat exchange medium.

[0073] Along the first direction z, the first spoiler 30 and the first wall 11 are spaced apart, and the first spoiler 30 and the first wall 11 jointly form a first flow channel 71, and the inlet 10c is connected to the first flow channel 71. The heat exchange medium entering the chamber through the inlet 10c directly enters the first flow channel 71, so that part of the heat exchange medium can flow along the second direction x under the guidance of the first flow channel 71.

[0074] The first flow channel 71 is provided with a second flow channel 72, and along the first direction z, the second flow channel 72 penetrates the first flow channel 71 to form the second flow channel 72, and the second flow channel 72 communicates with the outlet 10d and the first flow channel 71. In some embodiments, the second flow channel 72 can be formed by a hole structure or a column structure. Part of the heat exchange medium located in the first flow channel 71 can flow toward the outlet 10d along the first direction z under the guidance of the second flow channel 72.

[0075] For example, in some embodiments, see Figure 4 , the inlet 10c is arranged on the third wall 13, the outlet 10d is arranged on the fourth wall 14, and the inlet 10c is closer to the first wall 11 than the outlet 10d. The first spoiler 30 is plate-shaped. The first spoiler 30 is formed with a first branch hole 32, and the first branch hole 32 penetrates the first spoiler 30 in the first direction z to form a second flow channel 72. Along the first direction z, the first spoiler 30 and the first wall 11 are spaced to form a first flow channel 71, and the inlet 10c is located below the first spoiler 30, and the outlet 10d is located above the first spoiler 30. One end of the first spoiler 30 is arranged on the third wall 13, and the other end of the first spoiler 30 is spaced from the fourth wall 14 to form a first notch. The heat exchange medium enters the first flow channel 71 from the inlet 10c, and part of the heat exchange medium flows in the first flow channel 71 along the second direction x and through the first notch to the outlet 10d, and the other part of the heat exchange medium flows in the second flow channel 72 along the first direction z toward the outlet 10d.

[0076] In other embodiments, the inlet 10c is arranged on the third wall 13, the outlet 10d is arranged on the fourth wall 14, and the inlet 10c is closer to the first wall 11 than the outlet 10d. The first spoiler 30 is plate-shaped. The first spoiler 30 is formed with a first branch hole 32, and the first branch hole 32 penetrates the first spoiler 30 in the first direction z to form a second flow channel 72. Along the first direction z, the first spoiler 30 and the first wall 11 are spaced to form a first flow channel 71, and the inlet 10c is located below the first spoiler 30, and the outlet 10d is located above the first spoiler 30. One end of the first spoiler 30 is connected to the third wall 13, and the other end of the first spoiler 30 is connected to the fourth wall 14. The first spoiler 30 divides the chamber into an upper space and a lower space. The heat exchange medium enters the first flow channel 71 from the inlet 10c, part of the heat exchange medium flows in the first flow channel 71 along the second direction x and fills the lower space, and the other part of the heat exchange medium flows in the second flow channel 72 along the first direction z toward the outlet 10d.

[0077] In the above scheme, by setting the first spoiler 30, the flow direction of the heat exchange medium in the chamber can be changed, so that the heat exchange medium can flow in the first direction z and the second direction x, increase the flow path of the heat exchange medium in the chamber, and improve the flow turbulence of the heat exchange medium, so that the heat exchange medium can fully act on the battery cell 20, improve the thermal management efficiency of the battery cell 20, reduce the risk of thermal runaway of the battery cell 20, and thus make the battery 100 have higher reliability.

[0078] According to some embodiments of the present application, the first spoiler 30 is formed with a first through hole 31 , the first through hole 31 penetrates the first spoiler 30 along the first direction z, and the battery cell 20 is disposed in the first through hole 31 .

[0079] In some embodiments, please combine Figure 3-Figure 6 , Figure 5 This is a three-dimensional schematic diagram of the first spoiler 30 in some embodiments of the present application. Figure 6 Schematic diagram of the structure of the first spoiler 30 in some embodiments of the present application.

[0080] The first spoiler 30 is formed with a first through hole 31 . The first through hole 31 penetrates the first spoiler 30 along the first direction z, and the battery cell 20 is disposed in the first through hole 31 .

[0081] In some embodiments, the first spoiler 30 is in a plate shape.

[0082] In some embodiments, the first direction z is the height direction of the battery cell 20, and the battery cell 20 is arranged in the chamber in the first direction z. Exemplarily, the first wall 11 is the bottom wall of the box body 10, and the bottom of the battery cell 20 passes through the first through hole 31 and is supported by the bottom wall. The shape of the first through hole 31 can be set corresponding to the shape of the battery cell 20. Exemplarily, the battery cell 20 is a cylindrical battery cell, and the first through hole 31 is a circular hole.

[0083] In the above scheme, by setting the first through hole 31, on the one hand, it can play a positioning role in the assembly of the battery cell 20, and on the other hand, the first spoiler 30 can be constrained by the battery cell 20 and be in a relatively stable state in the chamber, thereby reducing the interference of the flow of the heat exchange medium on the first spoiler 30, so that the first spoiler 30 can effectively play a spoiler role, improve the heat exchange efficiency of the heat exchange medium, reduce the risk of thermal runaway of the battery cell 20, and improve the reliability of the battery 100.

[0084] According to some embodiments of this application, please combine Figure 3 and Figure 5 There are multiple battery cells 20 , which are arranged along the second direction x, and the first through holes 31 correspond to the battery cells 20 one by one. There are multiple second flow channels 72 , which are arranged between two adjacent first through holes 31 .

[0085] In some embodiments, see Figure 3 , the number of battery cells 20 is multiple, and the multiple battery cells 20 are arranged along the second direction x and the third direction y. For example, the multiple battery cells 20 are arranged in a row along the third direction y, and the multiple columns of battery cells 20 are arranged along the second direction x. The first direction z, the second direction x, and the third direction y are perpendicular to each other. Correspondingly, the first spoiler 30 is provided with multiple first through holes 31, and each first through hole 31 can allow a battery cell 20 to pass through.

[0086] The “number of second flow channels 72 is multiple” can be understood as that after the heat exchange medium enters the first flow channel 71 through the inlet 10c, part of the heat exchange medium can flow to the outlet 10d along the first direction z through the multiple second flow channels 72. For example, the second flow channel 72 can be formed by a first branch hole 32 provided on the first spoiler 30, and the first spoiler 30 is provided with multiple first branch holes 32, and the first branch hole 32 is located between two adjacent first through holes 31. See Figure 5 The first through hole 31 is a circular hole, the first branch hole 32 may be located between the four first through holes 31 , and the heat exchange medium flowing through the first branch hole 32 may act on the battery cells 20 corresponding to the four first through holes 31 .

[0087] The above scheme, by setting a plurality of second flow channels 72, and the second flow channels 72 are set between adjacent first through holes 31, can enable the heat exchange medium flowing along the first direction z to act on each battery cell 20, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and further improving the reliability of the battery 100.

[0088] According to some embodiments of this application, see Figure 4-Figure 6 Along the first direction z, the first spoiler 30 has a first surface facing the first wall 11 , and a first guide portion is protruding from the first surface. The first guide portion 40 is arranged corresponding to the second flow channel 72 for guiding the heat exchange medium from the first flow channel 71 to the second flow channel 72 .

[0089] The first surface is a surface of the first spoiler 30 facing the first wall 11. In some embodiments, the first spoiler 30 may be plate-shaped, and the first surface may be the lower surface of the first spoiler 30. The first surface may form a first flow channel 71 together with the first wall 11.

[0090] The first guide portion 40 is a component protruding from the first surface and is disposed corresponding to the second flow channel 72. The first guide portion 40 is located in the first flow channel 71 to guide the heat exchange medium in the first flow channel 71 to the second flow channel 72. For example, see Figure 4 The first guide portion 40 is located in the first flow channel 71 , and the heat exchange medium is blocked by the first guide portion 40 and changes its flow direction, thereby flowing toward the second flow channel 72 .

[0091] In some embodiments, see Figure 5 and Figure 6 The first branch holes 32 form a second flow channel 72, a plurality of battery cells 20 are arranged in a row along the third direction y, and a plurality of rows of first branch holes 32 are arranged at intervals along the second direction x. There are a plurality of first guide portions 40, and a plurality of first guide portions 40 are arranged at intervals along the second direction x, and one first guide portion 40 is arranged corresponding to one row of first branch holes 32.

[0092] In some embodiments, the first spoiler 30 and the first guide portion 40 may be a separate structure or an integrated structure. For example, the first guide portion 40 may be connected to the first spoiler 30 by bonding, welding, clamping or screw connection, or the first guide portion 40 and the first spoiler 30 may be integrally formed.

[0093] In the above scheme, by setting the first guide portion 40, the heat exchange medium in the first flow channel 71 can be guided to flow to the second flow channel 72, thereby effectively changing the flow direction of the heat exchange medium, increasing the flow path of the heat exchange medium in the chamber, and improving the flow turbulence of the heat exchange medium, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and further improving the reliability of the battery 100.

[0094] According to some embodiments of the present application, the first guide portion 40 is disposed around the hole wall of the first through hole 31 .

[0095] In some embodiments, the battery cell 20 is a cylindrical battery cell, and the first through hole 31 is a circular hole. “The first guide portion 40 is arranged around the hole wall of the first through hole 31” can be understood as that the outer contour of the first guide portion 40 is arc-shaped, for example, see Figure 6 The first guide portion 40 includes a plurality of arc-shaped protrusions, each of which is arranged corresponding to a hole wall of the first through hole 31 .

[0096] In some embodiments, the central angle of the arc-shaped protrusion of the first guide portion 40 may be 180°, that is, it surrounds the first through hole 31 for half a circle, and the central angle of the arc-shaped protrusion of the first guide portion 40 may be 90°, that is, it surrounds the first through hole 31 for a quarter of a circle. Figure 6 In the third direction y, the five first through holes 31 are arranged at intervals, and the first guide portion 40 includes five arc-shaped protrusions, the central angles of the two arc-shaped protrusions located at the head and tail ends are 90°, and the central angles of the three arc-shaped protrusions located in the middle are 180°.

[0097] In some embodiments, when the first guide portion 40 includes a plurality of arc-shaped protrusions, the arc-shaped protrusions have relative convex and concave surfaces along the thickness direction of the arc-shaped protrusions, and the convex surface can be arranged toward the flow direction of the heat exchange medium, for example, Figure 4 In the embodiment, the convex surface of the first guide portion 40 may be arranged toward the inlet 10c, so that the heat exchange medium touches the convex surface during the flow and enters the second flow channel 72 along the convex surface.

[0098] In other embodiments, the battery cell 20 is a square battery cell 20 , the first through hole 31 may be a square hole, and the first guide portion 40 may include a protrusion with edges.

[0099] In the above scheme, by setting the first guide part 40 to be arranged around the hole wall of the first through hole 31, the first guide part 40 can be attached to the wall surface of the battery cell 20, thereby improving the space utilization of the first guide part 40 and reducing the space occupied by the first guide part 40, thereby making the internal structure of the battery 100 compact and making the battery 100 have a higher volume energy density.

[0100] According to some embodiments of this application, please combine Figure 3 and Figure 4 The battery 100 further includes a second spoiler 50 , the second spoiler 50 is formed with a second through hole 51 , the second through hole 51 penetrates the second spoiler 50 along the first direction z, and the battery cell 20 is disposed in the second through hole 51 .

[0101] The second spoiler 50 is a component disposed in the chamber. The second spoiler 50 has the function of hindering the flow of the heat exchange medium so that the heat exchange medium changes its flow direction.

[0102] In some embodiments, the second spoiler 50 is plate-shaped. The second through hole 51 is a hole-shaped structure formed in the second spoiler 50 , and the hole-shaped structure penetrates the second spoiler 50 along the first direction z. The second through hole 51 is for the battery cell 20 to pass through.

[0103] In some embodiments, the battery cells 20 may pass through the second through holes 51 of the second spoiler 50 and the first through holes 31 of the first spoiler 30. In some embodiments, at least a portion of the second through holes 51 corresponds to at least a portion of the first through holes 31 one by one.

[0104] The above scheme, by setting the second spoiler 50, on the one hand, can improve the assembly efficiency of the battery cell 20 through the mutual cooperation between the second through hole 51 and the battery cell 20, so that the battery cell 20 is stably in the chamber; on the other hand, because the second spoiler 50 is inside the box body 10, it can change the flow direction of the heat exchange medium, increase the flow path of the heat exchange medium in the chamber, and improve the flow turbulence of the heat exchange medium, so that the heat exchange medium can fully act on the battery cell 20, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and further improving the reliability of the battery 100.

[0105] According to some embodiments of this application, see Figure 4 The box body 10 also has a second wall 12. Along the first direction z, the first wall 11 and the second wall 12 are opposite to each other. The first spoiler 30 and the second spoiler 50 are spaced apart in the first direction z and form a third flow channel 73. The third flow channel 73 allows the heat exchange medium to flow along the second direction x. The second spoiler 50 is spaced apart from the second wall 12 and forms a fourth flow channel 74. The fourth flow channel 74 also allows the heat exchange medium to flow along the second direction x. The first flow channel 71 is connected to the third flow channel 73, and the third flow channel 73 is connected to the outlet 10d through the fourth flow channel 74.

[0106] In some embodiments, the second direction x is a bidirectional direction, for example Figure 4 In the first flow channel 71, the heat exchange medium flowing along the second direction x may include the heat exchange medium flowing horizontally to the right. In the third flow channel 73, the heat exchange medium flowing along the second direction x may include the heat exchange medium flowing horizontally to the left.

[0107] The second wall 12 is disposed opposite to the first wall 11 in the first direction z. In some embodiments, the box 10 includes a lower box 10b and an upper box 10a connected to each other, the first wall 11 may be the bottom wall of the lower box 10b, and the second wall 12 may be the top wall of the upper box 10a.

[0108] In some embodiments, the second spoiler 50 is disposed between the first spoiler 30 and the second wall 12. In the first direction z, the second spoiler 50 and the first spoiler 30 together form a third flow channel 73, and the second spoiler 50 and the second wall 12 together form a fourth flow channel 74. Exemplarily, the heat exchange medium enters the first flow channel 71 through the inlet 10c, and the heat exchange medium can flow into the third flow channel 73 after passing through the first flow channel 71 and the second flow channel 72, and enter the fourth flow channel 74 after flowing in the third flow channel 73, and finally discharged from the outlet 10d.

[0109] “The first flow channel 71 is connected to the third flow channel 73” can be understood as the heat exchange medium in the first flow channel 71 can enter the third flow channel 73. The path for the heat exchange medium in the first flow channel 71 to enter the third flow channel 73 includes but is not limited to the second flow channel 72 or other flow channels.

[0110] In the above scheme, by setting the second spoiler 50, the heat exchange medium is discharged from the box body 10 only after flowing through the first flow channel 71, the second flow channel 72, the third flow channel 73 and the fourth flow channel 74, which can improve the flow path of the heat exchange medium in the chamber, so that the heat exchange medium can fully act on the battery cell 20, effectively improve the heat exchange efficiency of the heat exchange medium, reduce the risk of thermal runaway of the battery cell 20, and thus improve the reliability of the battery 100.

[0111] In some other embodiments, the second spoiler 50 may include multiple sub-spoilers, which may be spoiler blocks sleeved on the periphery of the battery cell 20. The heat exchange medium can be turbulent by providing multiple spoiler grooves on the surface of the spoiler block.

[0112] According to some embodiments of this application, see Figure 4 , along the second direction x, the box body 10 has a third wall 13 and a fourth wall 14 opposite to each other. Along the second direction x, one end of the first spoiler 30 is connected to the third wall 13, and the other end of the first spoiler 30 is spaced apart from the fourth wall 14 to form a first gap, and the first gap connects the first flow channel 71 and the third flow channel 73.

[0113] The third wall 13 and the fourth wall 14 are two wall portions of the box body 10 disposed opposite to each other in the second direction x.

[0114] In some embodiments, the first spoiler 30 is plate-shaped. Along the second direction x, one end of the first spoiler 30 is connected to the third wall 13, and the other end of the first spoiler 30 is spaced apart from the fourth wall 14 to form a first notch 76 connecting the first flow channel 71 and the third flow channel 73. The first notch 76 can allow the heat exchange medium in the first flow channel 71 to flow into the third flow channel 73. That is, part of the heat exchange medium in the first flow channel 71 can enter the third flow channel 73 through the second flow channel 72, and the other part of the heat exchange medium in the first flow channel 71 can enter the third flow channel 73 through the first notch 76.

[0115] In some embodiments, the box body 10 may further include a fifth wall 15 and a sixth wall 16 opposite to each other in the third direction y, and two ends of the first spoiler 30 in the third direction y are respectively connected to the fifth wall 15 and the sixth wall 16 .

[0116] In the above scheme, by spacing the first spoiler 30 and the fourth wall 14 to form the first gap 76, the heat exchange medium can flow through the first flow channel 71 and then enter the third flow channel 73 through the first gap 76, so as to fully contact the battery cell 20, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and thereby improving the reliability of the battery 100.

[0117] In other embodiments, along the second direction x, one end of the first spoiler 30 is connected to the third wall 13, and the other end of the first spoiler 30 is connected to the fourth wall 14. The heat exchange medium in the first flow channel 71 can enter the third flow channel 73 through the second flow channel 72.

[0118] According to some embodiments of this application, see Figure 4 The inlet 10c is arranged on the third wall 13, and the outlet 10d is arranged on the fourth wall 14.

[0119] In some embodiments, the inlet 10c and the outlet 10d may be disposed on opposite walls, such as the inlet 10c is disposed on the third wall 13, and the outlet 10d is disposed on the fourth wall 14. Figure 4 For example, the heat exchange medium enters the chamber from the left side, is disrupted multiple times by the first spoiler 30 and the second spoiler 50 to change the flow direction, and is then discharged from the right side.

[0120] In the above scheme, by respectively arranging the inlet 10c and the outlet 10d on the third wall 13 and the fourth wall 14 arranged opposite to each other, the flow path of the heat exchange medium in the chamber can be improved, so that the heat exchange medium can fully regulate the temperature of the battery cell 20, improve the heat exchange efficiency of the battery cell 20, thereby reducing the risk of thermal runaway of the battery cell 20, and thus making the battery 100 have higher reliability.

[0121] In some other embodiments, the inlet 10 c and the outlet 10 d may also be disposed on the third wall 13 .

[0122] According to some embodiments of this application, see Figure 4 Along the second direction x, one end of the second spoiler 50 is connected to the fourth wall 14 , and the other end of the second spoiler 50 is spaced apart from the third wall 13 to form a second notch 77 , which connects the third flow channel 73 and the fourth flow channel 74 .

[0123] In some embodiments, the second spoiler 50 is plate-shaped. Along the second direction x, one end of the second spoiler 50 is connected to the fourth wall 14, and the other end of the first spoiler 30 is spaced apart from the third wall 13 to form a second notch 77 connecting the third flow channel 73 and the fourth flow channel 74, and the second notch 77 can allow the heat exchange medium in the third flow channel 73 to flow into the fourth flow channel 74.

[0124] In some embodiments, the box body 10 may further include a fifth wall 15 and a sixth wall 16 opposite to each other in the third direction y, and two ends of the second spoiler 50 in the third direction y are respectively connected to the fifth wall 15 and the sixth wall 16 .

[0125] In the above scheme, by spacing the second spoiler 50 and the third wall 13 to form a second gap 77, the heat exchange medium can flow through the third flow channel 73 and then enter the fourth flow channel 74 through the second gap 77, so as to fully contact the battery cell 20, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and thereby improving the reliability of the battery 100.

[0126] According to some embodiments of this application, please combine Figure 4 and Figure 7 , Figure 7 Schematic diagram of the second spoiler 50 in some embodiments of the present application. The second spoiler 50 is provided with a fifth flow channel 75 penetrating along the first direction z, the fifth flow channel 75 connects the third flow channel 73 and the fourth flow channel 74 and allows the heat exchange medium to flow along the first direction z.

[0127] The fifth flow channel 75 penetrates along the first direction z, and the fifth flow channel 75 can communicate with the third flow channel 73 and the fourth flow channel 74, so that the heat exchange medium in the third flow channel 73 can enter the fourth flow channel 74 along the first direction z.

[0128] In some embodiments, the second spoiler 50 is formed with a second branch hole 52 , and the second branch hole 52 penetrates the second spoiler 50 in the first direction z to form a fifth flow channel 75 .

[0129] In some embodiments, the number of the fifth flow channel 75 is multiple, and the fifth flow channel 75 is disposed between two adjacent second through holes 51. Figure 3 , the number of battery cells 20 is multiple, and the multiple battery cells 20 are arranged along the second direction x and the third direction y. For example, multiple battery cells 20 are arranged in rows at intervals along the third direction y, and multiple columns of battery cells 20 are arranged at intervals along the second direction x. The first direction z, the second direction x and the third direction y are perpendicular to each other. Correspondingly, the second spoiler 50 is provided with a plurality of second through holes 51, and each second through hole 51 can allow a battery cell 20 to pass through. "The number of the fifth flow channel 75 is multiple" can be understood as that the heat exchange medium located in the third flow channel 73 can flow to the fourth flow channel 74 along the first direction z through the multiple second flow channels 72, and finally flow to the outlet 10d. Exemplarily, the fifth flow channel 75 can be formed by a second branch hole 52 provided on the second spoiler 50, and the second spoiler 50 is provided with a plurality of second branch holes 52, and the second branch hole 52 is located between two adjacent second through holes 51. Please refer to Figure 7 The second through hole 51 is a circular hole, the second branch hole 52 can be located between the four second through holes 51 , and the heat exchange medium flowing through the second branch hole 52 can act on the battery cells 20 corresponding to the four second through holes 51 .

[0130] In the above scheme, by setting the fifth flow channel 75, the flow direction of the heat exchange medium can be changed, so that the heat exchange medium located in the third flow channel 73 can flow to the fourth flow channel 74 along the first direction z through the fifth flow channel 75, so that the heat exchange medium can fully act on the battery cell 20, thereby improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and thus making the battery 100 have higher reliability.

[0131] According to some embodiments of this application, please combine Figure 4 and Figure 7 Along the first direction z, the second spoiler 50 has a second surface facing the first spoiler 30 , and a second guide portion 60 is protruding from the second surface. The second guide portion 60 is arranged corresponding to the fifth flow channel 75 for guiding the heat exchange medium from the third flow channel 73 to the fifth flow channel 75 .

[0132] The second surface is a surface of the second spoiler 50 facing the first spoiler 30. In some embodiments, the second spoiler 50 may be plate-shaped, and the second surface may be the lower surface of the second spoiler 50. The second surface may form a third flow channel 73 together with the first spoiler 30.

[0133] The second guide portion 60 is a component protruding from the second surface and is disposed corresponding to the fifth flow channel 75. The second guide portion 60 is located in the third flow channel 73 to guide the heat exchange medium in the third flow channel 73 to the fifth flow channel 75. For example, see Figure 4The second guide portion 60 is located in the third flow channel 73 , and the heat exchange medium is blocked by the second guide portion 60 and changes its flow direction, thereby flowing toward the fifth flow channel 75 along the first direction z.

[0134] In some embodiments, see Figure 7 The second branch holes 52 form a fifth flow channel 75, and the plurality of battery cells 20 are arranged in a row along the third direction y, and the plurality of rows of second branch holes 52 are arranged at intervals along the second direction x. There are a plurality of second guide portions 60, and the plurality of second guide portions 60 are arranged at intervals along the second direction x, and one second guide portion 60 is arranged corresponding to one row of second branch holes 52.

[0135] In some embodiments, the second spoiler 50 and the second guide portion 60 may be a split structure or an integrated structure. For example, the second guide portion 60 may be connected to the second spoiler 50 by bonding, welding, clamping or screw connection, or the second guide portion 60 and the second spoiler 50 may be integrally formed.

[0136] In the above scheme, by setting the second guide portion 60, the heat exchange medium in the third flow channel 73 can be guided to flow to the fifth flow channel 75, thereby effectively changing the flow direction of the heat exchange medium, increasing the flow path of the heat exchange medium in the chamber, improving the flow turbulence of the heat exchange medium, improving the heat exchange efficiency of the heat exchange medium, reducing the risk of thermal runaway of the battery cell 20, and thereby improving the reliability of the battery 100.

[0137] According to some embodiments of the present application, see Figure 7 , the second guide portion 60 is arranged around the hole wall of the second through hole 51 .

[0138] In some embodiments, the battery cell 20 is a cylindrical battery cell, and the second through hole 51 is a circular hole. “The second guide portion 60 is arranged around the hole wall of the second through hole 51” can be understood as that the outer contour of the second guide portion 60 is arc-shaped, for example, see Figure 7 The second guide portion 60 includes a plurality of arc-shaped protrusions, each of which is arranged corresponding to a hole wall of the second through hole 51 .

[0139] In some embodiments, the central angle of the arc-shaped protrusion of the second guide portion 60 may be 180°, that is, it surrounds the second through hole 51 for half a circle, and the central angle of the arc-shaped protrusion of the second guide portion 60 may be 90°, that is, it surrounds the second through hole 51 for a quarter of a circle. Figure 7 In the third direction y, the five second through holes 51 are arranged at intervals, and the second guide portion 60 includes five arc-shaped protrusions, the central angles of the two arc-shaped protrusions located at the head and tail ends are 90°, and the central angles of the three arc-shaped protrusions located in the middle are 180°.

[0140] In some embodiments, when the second guide portion 60 includes a plurality of arc-shaped protrusions, the arc-shaped protrusions have relative convex and concave surfaces along the thickness direction of the arc-shaped protrusions, and the convex surface can be arranged toward the flow direction of the heat exchange medium, for example, Figure 4 The heat exchange medium enters the third flow channel 73 through the first notch 76 and flows to the left. The convex surface of the second guide portion 60 can be arranged toward the right side (facing the fourth wall 14), so that the heat exchange medium touches the convex surface during the flow and enters the fifth flow channel 75 along the convex surface.

[0141] In other embodiments, the battery cell 20 is a square battery cell 20 , the second through hole 51 may be a square hole, and the second guide portion 60 may include a protrusion with edges.

[0142] In the above scheme, by setting the second guide portion 60 to be arranged around the hole wall of the second through hole 51, the second guide portion 60 can be attached to the wall surface of the battery cell 20, thereby improving the space utilization of the second guide portion 60 and reducing the space occupied by the second guide portion 60, thereby making the internal structure of the battery 100 compact and making the battery 100 have a higher volume energy density.

[0143] According to some embodiments of the present application, along the direction of gravity, the inlet 10c is located below the outlet 10d.

[0144] In some embodiments, in the direction of gravity, the inlet 10c is located below the outlet 10d, that is, the heat exchange medium entering the chamber through the inlet 10c gradually immerses the battery cells 20 in the chamber under the action of gravity and is finally discharged from the high outlet 10d.

[0145] In the above scheme, the inlet 10c is set at a lower position and the outlet 10d is set at a higher position, which is conducive to the heat exchange medium to immerse the battery cell 20 as much as possible, improve the heat exchange efficiency of the heat exchange medium, reduce the thermal runaway risk of the battery cell 20, and thus make the battery 100 have higher reliability.

[0146] In other embodiments, along the gravity direction, the inlet 10c may be above the outlet 10d. Or in other embodiments, along the gravity direction, the inlet 10c and the outlet 10d may be at the same height, in which case the first direction z is perpendicular to the gravity direction.

[0147] According to some embodiments of the present application, the battery cell 20 is a cylindrical battery cell.

[0148] According to some embodiments of the present application, an electric device is provided, and the electric device includes the battery 100 described above. The battery 100 is used to provide electric energy.

[0149] In some embodiments, the electric device may further include a storage device, and the storage device may store a heat exchange medium to provide the heat exchange medium to the battery 100 , thereby adjusting the temperature of the battery cells 20 of the battery 100 .

[0150] According to some embodiments of this application, see Figure 2-Figure 7 The battery 100 includes a housing 10 , a battery cell 20 , a first spoiler 30 and a second spoiler 50 .

[0151] A cavity is formed inside the casing 10. A plurality of battery cells 20 are disposed in the cavity.

[0152] The box body 10 includes a first wall 11 and a second wall 12 opposite to each other along a first direction z, a third wall 13 and a fourth wall 14 opposite to each other along a second direction x, and a fifth wall 15 and a sixth wall 16 opposite to each other along a third direction y. The first wall 11 may be the bottom wall of the box body 10, and the second wall 12 may be the top wall of the box body 10. The first direction z, the second direction x, and the third direction y are perpendicular to each other. The third wall 13 is provided with an inlet 10c connected to the chamber, and the fourth wall 14 is provided with an outlet 10d connected to the chamber. Along the first direction z, the outlet 10d is closer to the second wall 12 than the inlet 10c.

[0153] The first spoiler 30 and the second spoiler 50 are plate-shaped, respectively, and the ends of the first spoiler 30 are connected to the third wall 13, the fifth wall 15 and the sixth wall 16. In the second direction x, the first spoiler 30 is spaced apart from the fourth wall 14 and forms a first notch 76. The ends of the second spoiler 50 are connected to the fourth wall 14, the fifth wall 15 and the sixth wall 16. In the second direction x, the first spoiler 30 is spaced apart from the third wall 13 and forms a second notch 77. The first spoiler 30 is formed with a plurality of first through holes 31 that penetrate along the first direction z for the battery cells 20 to pass through. The first spoiler 30 is also formed with a plurality of first tributary holes 32 that penetrate the first spoiler 30 along the first direction z. The second spoiler 50 is formed with a plurality of second through holes 51 that penetrate along the first direction z for the battery cells 20 to pass through. The second spoiler 50 is also formed with a plurality of second tributary holes 52 that penetrate the second spoiler 50 along the first direction z.

[0154] See also Figure 4, the first spoiler 30 and the second spoiler 50 are spaced apart along the first direction z. The first spoiler 30 and the first wall 11 are spaced apart and together form a first flow channel 71, the first flow channel 71 is connected to the inlet 10c, and the first branch hole 32 forms a second flow channel 72. The first spoiler 30 and the second spoiler 50 together form a third flow channel 73, the first flow channel 71 is connected to the third flow channel 73 through the first notch 76 and the second flow channel 72. The second spoiler 50 and the second wall 12 together form a fourth flow channel 74, the fourth flow channel 74 is connected to the outlet 10d. The second branch hole 52 forms a fifth flow channel 75, the third flow channel 73 is connected to the fourth flow channel 74 through the second notch 77 and the fifth flow channel 75.

[0155] The first spoiler 30 is provided with a first guide portion 40 for guiding the heat exchange medium in the first flow channel 71 to the second flow channel 72. The second spoiler 50 is provided with a second guide portion 60 for guiding the heat exchange medium in the third flow channel 73 to the fifth flow channel 75.

[0156] For example, Figure 4 The flow direction of the heat exchange medium is described by taking an example. The heat exchange medium enters the first flow channel 71 from the left side of the battery 100 through the inlet 10c. Part of the heat exchange medium in the first flow channel 71 can flow along the second direction x to the first notch 76 on the right side to flow into the third flow channel 73. Another part of the heat exchange medium in the first flow channel 71 can flow along the first direction z through the second flow channel 72 to the third flow channel 73. Part of the heat exchange medium in the third flow channel 73 can flow along the second direction x to the second notch 77 on the left side to flow into the fourth flow channel 74. Another part of the heat exchange medium in the third flow channel 73 can flow along the first direction z through the fifth flow channel 75 to the fourth flow channel 74. The heat exchange medium in the fourth flow channel 74 can be discharged through the outlet 10d.

[0157] The above scheme, by setting the first spoiler 30 and the second spoiler 50, can change the flow direction of the heat exchange medium in the chamber, so that the heat exchange medium can flow in the first direction z and the second direction x, increase the flow path of the heat exchange medium in the chamber, and improve the flow turbulence of the heat exchange medium, so that the heat exchange medium can fully act on the battery cell 20, improve the thermal management efficiency of the battery cell 20, reduce the risk of thermal runaway of the battery cell 20, and thus make the battery 100 have higher reliability.

[0158] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: Battery cells; A box body, a chamber for accommodating the battery monomer is formed inside the box body, the box body has an inlet and an outlet connected to the chamber, the inlet is used for a heat exchange medium to enter the chamber, the outlet is used for discharging the heat exchange medium, the heat exchange medium is used to adjust the temperature of the battery monomer, and the box body has a first wall in a first direction; A first spoiler is disposed in the chamber, wherein along a first direction, the inlet is located on one side of the first spoiler, and the outlet is located on the other side of the first spoiler; Among them, along the first direction, the first spoiler is spaced apart from the first wall and forms a first flow channel, the first flow channel is connected to the inlet and allows the heat exchange medium to flow along the second direction; the first spoiler is provided with a second flow channel that passes through the first direction, the second flow channel connects the outlet and the first flow channel and allows the heat exchange medium to flow along the first direction, and the first direction and the second direction are perpendicular to each other.

2. The battery according to claim 1, characterized in that The first spoiler is formed with a first through hole, the first through hole penetrates the first spoiler along the first direction, and the battery cell is inserted into the first through hole.

3. The battery according to claim 2, characterized in that There are a plurality of battery cells, the plurality of battery cells are arranged along the second direction, and there are a plurality of first through holes, which are arranged corresponding to the battery cells; There are multiple second flow channels, and the second flow channels are arranged between two adjacent first through holes.

4. The battery according to claim 2, characterized in that Along the first direction, the first spoiler has a first surface facing the first wall, the first surface is protrudingly provided with a first guide portion, the first guide portion is arranged corresponding to the second flow channel, and is used to guide the heat exchange medium from the first flow channel to the second flow channel.

5. The battery according to claim 4, characterized in that The first guide portion is disposed around a hole wall of the first through hole.

6. The battery according to claim 2, characterized in that The battery further includes a second spoiler, the second spoiler is formed with a second through hole, the second through hole penetrates the second spoiler along the first direction, and the battery cell is passed through the second through hole.

7. The battery according to claim 6, characterized in that The box body further comprises a second wall, and the first wall and the second wall are opposite to each other along the first direction; the first spoiler and the second spoiler are arranged at intervals in the first direction to form a third flow channel, and the third flow channel is used for the heat exchange medium to flow along the second direction; the second spoiler is arranged at intervals with the second wall to form a fourth flow channel, and the fourth flow channel is used for the heat exchange medium to flow along the second direction; The first flow channel is connected to the third flow channel, and the third flow channel is connected to the outlet through the fourth flow channel.

8. The battery according to claim 7, characterized in that Along the second direction, the box body has a third wall and a fourth wall opposite to each other; Along the second direction, one end of the first spoiler is connected to the third wall, and the other end of the first spoiler is spaced apart from the fourth wall to form a first gap, wherein the first gap connects the first flow channel and the third flow channel.

9. The battery according to claim 8, characterized in that The inlet is arranged on the third wall, and the outlet is arranged on the fourth wall.

10. The battery according to claim 9, characterized in that Along the second direction, one end of the second spoiler is connected to the fourth wall, and the other end of the second spoiler is spaced apart from the third wall to form a second gap, and the second gap connects the third flow channel and the fourth flow channel.

11. The battery according to claim 7, characterized in that The second spoiler is provided with a fifth flow channel penetrating along the first direction, and the fifth flow channel is connected with the third flow channel and the fourth flow channel and allows the heat exchange medium to flow along the first direction.

12. The battery according to claim 11, characterized in that Along the first direction, the second spoiler has a second surface facing the first spoiler, the second surface is protruding with a second guide portion, the second guide portion is arranged corresponding to the fifth flow channel, and is used to guide the heat exchange medium from the third flow channel to the fifth flow channel.

13. The battery according to claim 12, characterized in that The second guide portion is disposed around a hole wall of the second through hole.

14. The battery according to any one of claims 1 to 13, characterized in that: Along the direction of gravity, the inlet is located below the outlet.

15. The battery according to any one of claims 1 to 13, characterized in that: The battery cell is a cylindrical battery cell.

16. An electrical device, characterized in that: The battery comprising any one of claims 1 to 15 is used for providing electrical energy.

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