Battery device, energy storage device, energy storage system, electrical device and charging network

Abstract

The present application relates to the technical field of battery production. Provided are a battery device, an energy storage device, an energy storage system, an electrical device and a charging network. The battery device comprises a battery cell assembly, a heat exchange component and a first busbar component, wherein a plurality of heat exchange flow channels are provided inside the heat exchange component, and the battery cell assembly is configured close to or in contact with the heat exchange component; and the first busbar component is connected to the heat exchange component, a first busbar channel is provided inside the first busbar component, the first busbar component is provided with a first busbar inlet and a plurality of first busbar outlets which are all in communication with the first busbar channel, and each of the first busbar outlets is in communication with each of the heat exchange flow channels on a one-to-one correspondence basis. The present application aims to reduce the shunt flow resistance of a heat exchange fluid, thereby improving the heat exchange efficiency.

Description

Battery devices, energy storage devices, energy storage systems, electrical devices and charging networks Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery device, energy storage device, energy storage system, power consumption device, and charging network. Background Technology

[0002] The battery is a core component of a vehicle, and its performance is crucial to the vehicle's safety.

[0003] Battery devices generate heat during charging and discharging. If this heat cannot be effectively dissipated, it can lead to decreased battery performance, shortened lifespan, increased internal resistance, reduced energy density, and in severe cases, thermal runaway. Therefore, heat exchange components are incorporated into battery devices to cool the individual battery cells.

[0004] In related technologies, cooling and heat exchange are usually achieved through heat exchange components that allow the flow of heat exchange fluid. However, the flow resistance is high when the heat exchange fluid enters the heat exchange component, which affects the flow distribution and flow rate of the heat exchange fluid, and thus affects the heat exchange efficiency of the heat exchange component. Summary of the Invention

[0005] The purpose of this application is to provide a battery device, energy storage device, energy storage system, electrical device, and charging network, aiming to solve the technical problem that the large flow resistance of the heat exchange fluid in the battery device affects the heat exchange efficiency. Technical solutions

[0006] The technical solution adopted in the embodiments of this application is:

[0007] In a first aspect, this application provides a battery device, comprising:

[0008] Battery cell assembly;

[0009] The heat exchange component has multiple heat exchange channels inside, and the battery cell assembly is arranged close to or in contact with the heat exchange component;

[0010] The first flow junction component is connected to the heat exchange component. The first flow junction component has a first flow junction channel inside. The first flow junction component is equipped with a first flow junction inlet and multiple first flow junction outlets that are all connected to the first flow junction channel. Each first flow junction outlet is connected to each heat exchange flow channel in a one-to-one correspondence.

[0011] In this embodiment, by connecting a first confluence component to the heat exchange component and forming a first confluence channel with multiple first confluence outlets inside the first confluence component, and forming multiple heat exchange channels inside the heat exchange component corresponding to the multiple first confluence outlets, the flow resistance at the inlet position of each heat exchange channel is reduced, which is beneficial to improving the flow rate of the heat exchange fluid and thus improving the heat exchange efficiency of the heat exchange component.

[0012] In one embodiment, the battery device further includes a housing body, which is connected to the heat exchange components and together forms an accommodating space, in which the battery cell assembly is housed; an air guide channel is formed between two adjacent heat exchange channels, and the air guide channel is connected to the accommodating space.

[0013] In this embodiment, by setting an air guide channel inside the heat exchange component and placing the air guide channel between two adjacent heat exchange channels, the heat exchange fluid can exchange heat and cool the high-temperature gas generated by the battery cell assembly, thereby helping to reduce the risk of battery bulging and thermal runaway.

[0014] In one embodiment, the heat exchange component is provided with multiple air inlets and multiple air outlets, each air channel is connected to at least one air inlet, and each air channel is connected to at least one air outlet.

[0015] In this embodiment, by setting multiple gas inlets and outlets, it is beneficial to improve the gas flow rate and increase the gas flow volume, which helps to reduce the risk of thermal runaway of the battery device.

[0016] In one embodiment, the battery device has an exhaust passage communicating with the accommodating space, and each vent outlet is configured to communicate with the exhaust passage.

[0017] In this embodiment, the air guide channel and the exhaust channel are connected, which helps to simplify the structural layout of the air guide channel, makes the exhaust channel inside the battery device more compact, saves space, and improves space utilization.

[0018] In one embodiment, the various air outlets converge and form an air collection port on the heat exchange component; the battery device also includes an air collection component connected to the heat exchange component and communicating with the air collection port and the exhaust passage.

[0019] In this embodiment, the gas collecting component is used to collect gas and transport it to the exhaust channel. The gas collecting component is used to collect and transmit gas, and the setting of the gas collecting component helps to improve the convenience of connection and assembly.

[0020] In one embodiment, the heat exchange component has a heat exchange wall and a structural wall disposed opposite to each other, an air inlet is disposed on the heat exchange wall, and the battery cell assembly is disposed close to or abutting against the heat exchange wall; an air outlet is disposed on the structural wall, and the battery device also includes an exhaust valve, which is connected to the heat exchange component and communicates with the air outlet.

[0021] In this embodiment, the gas outlet is located on the structural wall and an exhaust valve is installed, thereby forming a bottom-spray exhaust method for the battery device, allowing the gas to be discharged directly downwards. This helps to reduce the risk of leakage and minimizes the impact on the internal and upper components of the battery device. It also helps to reduce the risk of short circuits, corrosion, and other problems caused by gas contacting electrical components, and reduces the risk of thermal runaway.

[0022] In one embodiment, each heat exchange channel is configured to extend along a first direction.

[0023] In this embodiment, the heat exchange channels are spaced apart and arranged in parallel, which makes the distribution of the heat exchange channels within the heat exchange fluid more regular and uniform, which is conducive to improving the flow rate of the heat exchange fluid and thus improving the heat exchange efficiency of the heat exchange components.

[0024] In one embodiment, the first busbar extends along a second direction, which is perpendicular to the first direction.

[0025] In this embodiment, the length direction of the first confluence component is arranged perpendicular to the extension direction of each heat exchange channel, so that the first confluence component can be arranged at an edge position along the length direction of the heat exchange component, making the position arrangement of the first confluence component on the heat exchange component more reasonable and conducive to improving space utilization.

[0026] In one embodiment, the heat exchange component has a first receiving groove on the side facing away from the battery cell assembly, and the first busbar component is housed in the first receiving groove. The groove wall of the first receiving groove corresponding to each heat exchange channel extends to each first busbar outlet.

[0027] In this embodiment, by setting a first receiving groove, the heat exchange component can partially or completely hide the first confluence component, which helps to save space and improve space utilization.

[0028] In one embodiment, the battery device further includes a first sealing plate structure connected to the side of the heat exchange component opposite to the battery cell assembly, the first sealing plate structure covering at least the first receiving groove.

[0029] In this embodiment, by adding a first sealing plate structure, it is beneficial to protect the first busbar component and enhance the structural strength of the heat exchange component.

[0030] In one embodiment, the battery device further includes a second busbar component connected to the heat exchange component. The second busbar component has a second busbar channel inside. The second busbar component is configured with a second busbar outlet and a plurality of second busbar inlets that are all connected to the second busbar channel. Each second busbar inlet is configured to be connected to each heat exchange channel in a one-to-one correspondence.

[0031] In this embodiment, by connecting a second manifold to the heat exchange component and forming a second manifold channel with multiple second manifold inlets inside the second manifold, and forming multiple heat exchange channels inside the heat exchange component corresponding to multiple second manifold outlets, the flow resistance at the position where the outlet of each heat exchange channel is connected to the second manifold inlet is reduced, which is beneficial to improving the flow rate of the heat exchange fluid and thus improving the heat exchange efficiency of the heat exchange component.

[0032] In one embodiment, each heat exchange channel extends along a first direction, and a first and a second confluence component are distributed at both ends of the heat exchange channel. The first and the second confluence components extend along a second direction, which is perpendicular to the first direction.

[0033] In this embodiment, the first and second confluence components are arranged in parallel and on both sides of the heat exchange component, respectively, to achieve the functions of diverting and confluencing the heat exchange fluid. The first and second confluence channels are arranged perpendicular to each heat exchange flow channel to facilitate the smooth flow of the heat exchange fluid. The overall structure of the heat exchange component, the first confluence component, and the second confluence component is compact and reasonably arranged, which is conducive to improving the space utilization of the battery device.

[0034] In one embodiment, the heat exchange component has a second receiving groove on one side facing away from the battery cell assembly, and the second busbar component is housed in the second receiving groove. The groove wall of the second receiving groove corresponding to each heat exchange channel extends to each of the second busbar inlets.

[0035] In this embodiment, by providing a second receiving groove, the heat exchange component can partially or completely hide the second busbar component, which helps to save space and improve space utilization.

[0036] In one embodiment, the battery device further includes a second sealing plate structure connected to the side of the heat exchange component opposite to the battery cell assembly, the second sealing plate structure covering at least the second receiving groove.

[0037] In this embodiment, by adding a second sealing plate structure, it is beneficial to protect the second busbar component and enhance the structural strength of the heat exchange component.

[0038] In one embodiment, the first busbar component and the second busbar component are connected by a connector to form an integral structure.

[0039] In this embodiment, the first busbar component and the second busbar component are connected by a connecting part to form an integral structure, which helps to reduce installation steps and improve installation speed.

[0040] In one embodiment, the first busbar component and the second busbar component are spaced apart and arranged opposite to each other, and the connecting portion is connected to one end of the first busbar component and one end of the second busbar component, respectively.

[0041] In this embodiment, the connecting part is connected to one end of the first and second busbar components, so that the connecting part can avoid the middle region of the heat exchange component and be located near the edge of the heat exchange component, thereby helping to reduce the risk of interference between the connecting part and other components.

[0042] In one embodiment, both the first bus inlet and the second bus outlet are located on the connecting portion.

[0043] In this embodiment, both the first inlet and the second outlet are located on the connecting part to achieve a centralized arrangement of the first inlet and the second outlet, which facilitates the input and output of the heat exchange fluid.

[0044] In one embodiment, the heat exchange component has an axis of symmetry; the first busbar component includes a first busbar portion and a second busbar portion connected to the first busbar portion, the first busbar portion and the second busbar portion being arranged at an angle, the first busbar portion being arranged parallel to the axis of symmetry, the second busbar portion extending toward the axis of symmetry, a first busbar outlet being opened in the first busbar portion, and a first busbar inlet being opened in the second busbar portion and located at one end of the second busbar portion closer to the axis of symmetry; and / or

[0045] The second busbar component includes a third busbar section and a fourth busbar section connected to the third busbar section. The third busbar section and the fourth busbar section are arranged at an angle. The third busbar section is arranged parallel to the axis of symmetry, and the fourth busbar section extends toward the axis of symmetry. The second busbar inlet is opened in the third busbar section, and the second busbar outlet is opened in the fourth busbar section and is located in the area of ​​the fourth busbar section near the middle of the heat exchange component.

[0046] In this embodiment, the first and second confluence components are arranged symmetrically on both sides of the axis of symmetry, and the first confluence inlet and the second confluence outlet are arranged close to each other on both sides of the axis of symmetry of the heat exchange component. This makes it easier to achieve a centralized arrangement of the first and second confluence inlets and outlets, which is beneficial to improving the compactness of the structural arrangement and facilitating the input and output of the heat exchange fluid.

[0047] Secondly, this application provides an energy storage device, including a plurality of battery devices as described above, the battery devices being used to store or provide electrical energy.

[0048] Thirdly, this application provides an energy storage system, including a power conversion device and the aforementioned energy storage device, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0049] Fourthly, this application provides an electrical device, including a battery device, an energy storage device, or an energy storage system as described above, wherein the battery device is used to store or provide electrical energy.

[0050] Fifthly, this application provides a charging network, including a charging pile and the aforementioned energy storage device or energy storage system, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0051] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 is a schematic diagram of the vehicle structure provided in some embodiments of this application;

[0054] Figure 2 is an exploded structural diagram of a battery device provided in some embodiments of this application;

[0055] Figure 3 is a magnified view of a portion of position B in Figure 2;

[0056] Figure 4 is a schematic diagram of the internal structure of the battery device in some embodiments of this application;

[0057] Figure 5 is an isometric view of Figure 4;

[0058] Figure 6 is a cross-sectional view AA in Figure 4;

[0059] Figure 7 is a magnified view of a portion of position C in Figure 6;

[0060] Figure 8 is a second sectional view of AA in Figure 4;

[0061] Figure 9 is a magnified view of position D in Figure 8;

[0062] Figure 10 is a schematic diagram of the cross-sectional shape of the first busbar (or the second busbar) in the battery device provided in some embodiments of this application in the direction perpendicular to the second direction;

[0063] Figure 11 is a schematic diagram of the cross-sectional shape of the first busbar (or the second busbar) in the battery device provided in some embodiments of this application in the direction perpendicular to the second direction.

[0064] Figure 12 is a schematic diagram of the cross-sectional shape of the first busbar (or the second busbar) in the battery device provided in some embodiments of this application in the direction perpendicular to the second direction.

[0065] Figure 13 is a schematic diagram of the cross-sectional shape of the first busbar (or the second busbar) in the battery device provided in some embodiments of this application in the direction perpendicular to the second direction;

[0066] Figure 14 is a schematic diagram of the cross-sectional shape of the first busbar (or the second busbar) in the battery device provided in some embodiments of this application in the direction perpendicular to the second direction.

[0067] Figure 15 is a schematic diagram of the cross-sectional shape of the first busbar (or the second busbar) in the battery device provided in some embodiments of this application in the direction perpendicular to the second direction.

[0068] Figure 16 is a schematic diagram of the bottom structure of a battery device provided in some embodiments of this application;

[0069] Figure 17 is a schematic diagram of the exploded structure of Figure 16;

[0070] Figure 18 is a schematic diagram of the bottom structure of a battery device provided in some embodiments of this application;

[0071] Figure 19 is a schematic diagram of the exploded structure of Figure 18;

[0072] Figure 20 is a schematic diagram of the bottom structure of a battery device provided in some embodiments of this application;

[0073] Figure 21 is a schematic diagram of the exploded structure of Figure 20;

[0074] Figure 22 is a schematic diagram of the structure of the first or second bent connection portion in the battery device provided in some embodiments of this application.

[0075] Explanation of reference numerals in the attached drawings: 1000, Vehicle; 1100, Battery unit; 1110, Battery cell assembly; 1120, Box body; 1121, Cover; 1122, Frame; 1123, Accommodation space; 1130, Heat exchange component; 1131, Heat exchange channel; 1132, Air guide channel; 11321, Air guide inlet; 11322, Air guide outlet; 11323, Air collection component; 1133, Heat exchange wall; 1134, Structural wall; 1135, First accommodating groove; 1136, Second accommodating groove; 1137, Exhaust valve; 1140, First confluence component; 1141, First confluence channel; 1142, First confluence inlet; 1143, First confluence outlet; 1144, First confluence section; 1145, Second confluence section; 1146, ... 1147. First bent connection; 1150. Sealing component; 1160. First sealing plate structure; 1170. Second sealing plate structure; 1180. Second confluence component; 1181. Second confluence channel; 1182. Second confluence inlet; 1183. Second confluence outlet; 1184. Third confluence section; 1185. Fourth confluence section; 1186. Second bent connection; 1187. Second bent connection; 1190. Connecting part; 1200. Controller; 1300. Motor; X, First direction; Y, Second direction; Z, Axis of symmetry; a, First included angle; β, Second included angle. Detailed Implementation

[0076] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0078] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0079] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0080] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0081] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0082] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0083] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0084] The battery is a core component of a vehicle, and its performance is crucial to the vehicle's safety.

[0085] Battery devices generate heat during charging and discharging. If this heat cannot be effectively dissipated, it can lead to decreased battery performance, shortened lifespan, increased internal resistance, reduced energy density, and in severe cases, thermal runaway. Therefore, heat exchange components are incorporated into battery devices to cool the individual battery cells.

[0086] In related technologies, cooling and heat exchange are usually achieved through heat exchange components that allow the flow of heat exchange fluid. Specifically, a heat exchange channel is formed inside the heat exchange component, and the heat exchange fluid enters the heat exchange channel through the channel inlet. Generally, there is one channel inlet, and the heat exchange fluid enters the heat exchange channel through this inlet and then flows along the extension trajectory of the heat exchange channel. Flow resistance is easily formed at the channel inlet, which affects the distribution of the flow velocity of the heat exchange fluid in the heat exchange channel, thereby affecting the flow diversion of the heat exchange fluid at the channel inlet and the flow rate of the heat exchange fluid, and thus affecting the heat exchange efficiency of the heat exchange component.

[0087] Therefore, this application provides a battery device that adds a first confluence component. The first confluence component is used to divert the heat exchange fluid before it enters the heat exchange channel, so that the first confluence component forms multiple first confluence outlets. Correspondingly, the multiple first confluence outlets are connected to the corresponding multiple heat exchange channels, so that the heat exchange fluid can enter each heat exchange channel more dispersedly. The flow resistance at the position where each first confluence outlet is connected to each heat exchange channel is reduced, which helps to improve the flow rate of the heat exchange fluid and thus improve the heat exchange efficiency of the heat exchange component.

[0088] Specifically, referring to FIG2, this application embodiment provides a battery device 1100, which includes one or more battery cell assemblies 1110. The battery device 1100 disclosed in this application embodiment can be used in electrical devices that use the battery device 1100 as a power source or in various energy storage devices and energy storage systems that use the battery device 1100 as an energy storage element. Electrical devices can be, but are not limited to, mobile phones, portable devices, laptops, electric toys, power tools, electric vehicles, vehicles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0089] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0090] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 1100 is provided inside the vehicle 1000, and the battery device 1100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 1100 can be used to power the vehicle 1000; for example, the battery device 1100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery device 1100 to supply power to the motor 1300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0091] In some embodiments of this application, the battery device 1100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0092] Referring to Figures 2-7, the battery device 1100 includes a battery cell assembly 1110, a heat exchange component 1130, and a first busbar component 1140. The heat exchange component 1130 has multiple heat exchange channels 1131 inside, and the battery cell assembly 1110 is arranged close to or in contact with the heat exchange component 1130. The first busbar component 1140 is connected to the heat exchange component 1130. The first busbar component 1140 has a first busbar channel 1141 inside, and the first busbar component 1140 is provided with a first busbar inlet 1142 and multiple first busbar outlets 1143 that are all connected to the first busbar channel 1141. Each first busbar outlet 1143 is connected to each heat exchange channel 1131 in a one-to-one correspondence.

[0093] Specifically, the battery apparatus 1100 may include one or more battery cell assemblies 1110 for providing voltage and capacity. The battery cell assembly 1110 may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0094] The battery device 1100 can be a battery pack, which generally includes a housing and one or more battery cell assemblies 1110, with the battery cell assemblies 1110 housed in the housing.

[0095] A battery cell refers to the smallest unit that makes up the battery device 1100. Each battery cell can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited to these. Battery cells can be cylindrical, flat, cuboid, or other shapes.

[0096] The heat exchange component 1130 is used to exchange heat with the battery cell assembly 1110. Therefore, the heat exchange component 1130 can be in direct contact with the battery cell assembly 1110 to achieve contact heat exchange. Alternatively, a small gap space can be formed between the heat exchange component 1130 and the battery cell assembly 1110, and gas can be present in this gap space. In this case, the heat exchange method is that the battery cell assembly 1110 exchanges heat indirectly with the heat exchange component 1130 through the gas in the gap space to achieve indirect heat exchange.

[0097] In this embodiment, in order to more clearly describe the relative positional relationship between the various components, the battery device 1100 is set to be placed horizontally, the height direction of each battery cell in the battery cell assembly 1110 is along the vertical direction, and multiple battery cells are arranged in an array in a horizontal plane perpendicular to the height direction.

[0098] The heat exchange component 1130 can be placed in various ways. For example, the heat exchange component 1130 can be located between two adjacent battery cells, or it can be located at the bottom of the battery cell assembly 1110, so that the heat exchange component 1130 can exchange heat with the battery cell assembly 1110 at the bottom and also support the battery cell assembly 1110. Of course, the heat exchange component 1130 and the battery cell assembly 1110 can also be arranged in various ways, such as the heat exchange component 1130 being located on the top of the battery cell assembly 1110, etc., which will not be elaborated here.

[0099] The heat exchange component 1130 has multiple heat exchange channels 1131 inside, which are used for the flow of heat exchange fluid. The multiple heat exchange channels 1131 can be arranged in a connected or disconnected manner. For example, the multiple heat exchange channels 1131 can be arranged in a spaced-apart manner, or in a cross-connected manner.

[0100] Understandably, since the heat exchange fluid needs to circulate within the heat exchange channel 1131, each heat exchange channel 1131 has a channel inlet and a channel outlet. The heat exchange fluid enters each heat exchange channel 1131 from each channel inlet, flows through the heat exchange channel 1131, and flows out to the outside of the heat exchange component 1130 from each channel outlet.

[0101] The heat exchange component 1130 can adopt a continuous plate structure, or it can adopt a tubular structure. By setting multiple tubes, the cavity of each tube forms a heat exchange channel 1131. The multiple tubes can also be connected and fixed by connecting components to form an integrated structure.

[0102] The first confluence component 1140 is a component used to split the heat exchange fluid, and is used to guide and split the heat exchange fluid before it enters the heat exchange channel 1131. Specifically, a first confluence channel 1141 is opened or formed inside the first confluence component 1140. The first confluence channel 1141 can adopt a shell structure or a tubular structure. The first confluence channel 1141 can be understood as a shell cavity or a tube cavity, etc.

[0103] As shown in Figures 6 and 7, multiple first confluence outlets 1143 are provided on the first confluence component 1140. Since the first confluence component 1140 is connected to the heat exchange component 1130 for conveying heat exchange fluid into the heat exchange channel 1131, the multiple first confluence outlets 1143 are spaced apart, and each first confluence outlet 1143 is connected to the inlet of each heat exchange channel 1131. Thus, the heat exchange fluid can flow from the first confluence channel 1141 into each heat exchange channel 1131 from the first confluence outlets 1143. The flow resistance at the inlet of each heat exchange channel 1131 is relatively reduced, and the flow velocity is increased, which is conducive to uniform flow distribution, improves the flow rate of the heat exchange fluid, and thus improves the heat exchange efficiency.

[0104] Understandably, the first manifold component 1140 needs to have a first manifold inlet 1142 for the heat exchange fluid to flow into. The first manifold inlet 1142 is connected to the first manifold channel 1141. The first manifold inlet 1142 may be provided in one or more ways. For example, the first manifold component 1140 extends in a linear shape, and there are two first manifold inlets 1142. The two extended ends of the first manifold component 1140 may each form the first manifold inlet 1142. Alternatively, there may be one first manifold inlet 1142, and one extended end of the first manifold component 1140 may form the first manifold inlet 1142.

[0105] The first busbar component 1140 can be connected to the heat exchange component 1130 in a fixed or detachable manner. For example, the first busbar component 1140 and the heat exchange component 1130 can be fixed by welding or bonding, such as by brazing. Alternatively, the first busbar component 1140 and the heat exchange component 1130 can be fixed by fastening components, such as bolt assemblies or riveting assemblies.

[0106] In this embodiment, by connecting the first confluence component 1140 to the heat exchange component 1130 and forming a first confluence channel 1141 with multiple first confluence outlets 1143 inside the first confluence component 1140, and forming multiple heat exchange channels 1131 inside the heat exchange component 1130 corresponding to the multiple first confluence outlets 1143, the flow resistance at the inlet position of each heat exchange channel 1131 is reduced, which helps to increase the flow rate of the heat exchange fluid and thus improve the heat exchange efficiency of the heat exchange component 1130.

[0107] In some embodiments, as shown in Figures 2-5, 16 and 17, the battery device 1100 further includes a housing body 1120, which is connected to the heat exchange component 1130 and together forms an accommodating space 1123, in which the battery cell assembly 1110 is accommodated; an air guide channel 1132 is formed between two adjacent heat exchange channels 1131, and the air guide channel 1132 is connected to the accommodating space 1123.

[0108] For the housing body 1120, the housing body 1120 can adopt a hollow structure with one end open, forming a cavity inside. The heat exchange component 1130 is connected to the housing body 1120 and covers the opening, so that the housing body 1120 and the heat exchange component 1130, after being connected, seal the cavity and form the aforementioned accommodating space 1123. For example, the housing body 1120 includes a frame 1122 and a cover 1121. The cover 1121 is detachably connected to the frame 1122. An opening is formed at one end of the frame 1122 opposite to the cover 1121, and the heat exchange component 1130 is connected to this opening. The position of the opening is such that the opening is closed. It can be understood that the heat exchange component 1130 forms a structure similar to the bottom plate of the box. For example, the box body 1120 is connected to the heat exchange component 1130 to form a box body. The interior of the box body forms an accommodating space 1123. The heat exchange component 1130 is located at the bottom of the box body to form the bottom plate of the box body. The battery cell assembly 1110 is housed in the accommodating space 1123. The battery cell assembly 1110 abuts against the heat exchange component 1130 so that heat can be exchanged between them. The heat exchange component 1130 can also support the battery cell assembly 1110.

[0109] Inside the heat exchange component 1130, in addition to forming multiple heat exchange channels 1131, a gas guiding channel 1132 is also formed, which serves to transport gas. Specifically, the battery cell assembly 1110 generates gas during charging and discharging. The gas is located in the accommodating space 1123. The battery device 1100 is provided with an exhaust channel, and the gas enters the exhaust channel and is then discharged to the external space of the battery device 1100. The exhaust channel maintains the pressure balance inside the battery device 1100 by venting gas. Typically, an explosion-proof valve is installed on the exhaust channel to reduce the risk of thermal runaway of the battery device 1100.

[0110] The air guide channel 1132 in this solution is also a channel for exhaust. The air guide channel 1132 is formed inside the heat exchange component 1130 and is located between any two adjacent heat exchange channels 1131. That is, there are multiple air guide channels 1132; one air guide channel 1132 can be formed between any two adjacent heat exchange channels 1131. In other words, the air guide channel 1132 separates two adjacent heat exchange channels 1131. The air guide channel 1132 can be directly connected to the external space of the battery device 1100, or it can be directly connected to the exhaust channel in the battery device 1100. The cooled gas can be discharged through the explosion-proof valve.

[0111] Understandably, the gas in the gas guide channel 1132 can exchange heat with the heat exchange fluid in the two adjacent heat exchange channels 1131. For example, during the charging and discharging process, the battery cell assembly 1110 generates a large amount of high-temperature gas. The high-temperature gas enters the gas guide channel 1132 through the accommodating space 1123. In the gas guide channel 1132, the heat exchange fluid on both sides can exchange heat with the high-temperature gas in the conductor channel. Typically, the temperature of the heat exchange fluid is lower than the temperature of the high-temperature gas, or the temperature of the heat exchange fluid heat exchange component 1130 is lower than the temperature of the high-temperature gas. This allows the structural body of the heat exchange component 1130 to exchange heat with the high-temperature gas, thereby achieving the purpose of cooling the high-temperature gas. After the temperature is reduced, the degree of gas expansion decreases, and the pressure inside the battery device 1100 can be controlled within a reasonable range, which can reduce the risk of battery device 1100 bulging and thermal runaway.

[0112] In this embodiment, by providing a gas guide channel 1132 inside the heat exchange component 1130 and placing the gas guide channel 1132 between two adjacent heat exchange channels 1131, the heat exchange fluid can exchange heat and cool the high-temperature gas generated by the battery cell assembly 1110, thereby helping to reduce the risk of battery device 1100 bulging and thermal runaway.

[0113] In some embodiments, as shown in FIG2-5, the heat exchange component 1130 is provided with a plurality of air inlets 11321 and a plurality of air outlets 11322, each air channel 1132 being connected to at least one air inlet 11321, and each air channel 1132 being connected to at least one air outlet 11322.

[0114] The air inlet 11321 should be located on the side of the heat exchange component 1130 facing the accommodating space 1123. For example, the heat exchange component 1130 adopts a plate-shell structure, with one side of the shell wall of the heat exchange component 1130 facing the accommodating space 1123. The heat exchange channel 1131 is located inside the heat exchange component 1130 and close to the shell wall. The surface of the shell wall facing the accommodating space 1123 forms the heat exchange surface, and the battery cell assembly 1110 can abut against this heat exchange surface. The air inlet 11321 is located on this heat exchange surface. The air inlet 11321 can be a through-hole structure located on the shell wall where the heat exchange surface is located. The through-hole structure is connected to the air channel 1132 inside the heat exchange component 1130. The air channel 1132 extends along a preset trajectory. One air channel 1132 can correspond to multiple air inlets 11321, and the multiple air inlets 11321 can be arranged at intervals along the preset trajectory.

[0115] Understandably, the gas guiding channel 1132 is used to transport high-temperature gas to the outside of the battery device 1100. Therefore, it is known that the gas guiding channel 1132 also has a gas guiding outlet 11322. The gas guiding outlet 11322 can be formed on the shell wall of the heat exchange component 1130 on the side opposite to the heat exchange surface. The gas guiding outlet 11322 can be directly connected to the external space of the battery device 1100, or the gas guiding outlet 11322 can be connected to the exhaust channel provided on the battery device 1100, so that the gas can be discharged to the outside of the battery device 1100 through the exhaust channel. Each gas guiding channel 1132 can be connected to one or more gas guiding outlets 11322. The more gas guiding outlets 11322 there are, the faster the gas flow rate and the larger the flow rate, which is beneficial to improving the gas discharge efficiency and reducing the risk of thermal runaway of the battery device 1100.

[0116] In this embodiment, by providing multiple gas inlets 11321 and gas outlets 11322, it is beneficial to improve the gas flow rate and increase the gas flow volume, which helps to reduce the risk of thermal runaway of the battery device 1100.

[0117] During the normal charging and discharging process of the battery device 1100, especially during charging, various chemical reactions occur, generating gases. If these gases cannot be released, the internal pressure of the battery device 1100 will continuously increase. Venting can release these gases, maintaining the internal pressure of the battery device 1100 within a normal range, thereby reducing the risk of deformation or bulging of the battery device 1100's casing or outer housing due to excessive internal pressure. Therefore, a venting channel for venting is provided inside the battery device 1100.

[0118] Specifically, in some embodiments, the battery device 1100 has an exhaust passage (not shown) communicating with the accommodating space 1123, and each vent outlet 11322 is configured to communicate with the exhaust passage.

[0119] For the exhaust channel, the exhaust channel can be set in multiple locations. For example, the exhaust channel can be set on the housing body 1120. The housing body 1120 has an exhaust inlet that is connected to the exhaust channel, so that the exhaust inlet of the exhaust channel is connected to the accommodating space 1123. The exhaust outlet of the exhaust channel can be set on the outer surface of the housing body 1120. An exhaust valve 1137 can also be installed at the exhaust outlet. The exhaust valve 1137 is also called an explosion-proof valve. The explosion-proof valve can open when the internal pressure of the battery device 1100 reaches a certain dangerous threshold, releasing the internal pressure and high-temperature gas, thereby reducing the risk of thermal runaway of the battery device 1100.

[0120] As for the gas guiding channel 1132, the gas guiding channel 1132 is formed on the heat exchange component 1130. The gas guiding channel 1132 also has the function of exhaust. In addition, during the process of gas guiding and exhaust, the heat exchange fluid in the heat exchange channel 1131 can also exchange heat and cool down the gas, thereby reducing the temperature of the gas and reducing the impact of high temperature gas on the internal temperature of the battery device 1100.

[0121] The air guide channel 1132 can be independent of the exhaust channel. Of course, the air guide channel 1132 can also be connected to the exhaust channel, that is, the air guide outlet 11322 of the air guide channel 1132 is connected to the channel inlet of the exhaust channel. This allows the gas in the air guide channel 1132 to be further transported to the outside of the battery device 1100 through the exhaust channel, making the overall structure of the battery device 1100 more compact and improving space utilization.

[0122] In this embodiment, the air guide channel 1132 is connected to the exhaust channel, which helps to simplify the structural arrangement of the air guide channel 1132, makes the exhaust channel inside the battery device 1100 more compact, saves space, and improves space utilization.

[0123] In some embodiments, as shown in Figures 2, 4 and 5, each air outlet 11322 converges and forms an air collection port on the heat exchange component 1130; the battery device 1100 also includes an air collection component 11323, which is connected to the heat exchange component 1130 and connects the air collection port and the exhaust passage.

[0124] Since the various gas outlets 11322 are arranged in parallel, it is necessary to converge the multiple gas outlets 11322 into a centralized outlet on the heat exchange component 1130. That is, a gas collection port is opened on the heat exchange component 1130. The gas collection port and each gas outlet 11322 can be connected through a connecting channel. The gas collection port can be regarded as the centralized output port of the gas output from each gas channel 1132. The gas collection port can be opened on the side of the heat exchange component 1130 facing or away from the battery cell assembly 1110.

[0125] The gas collecting component 11323 has an internal air passage or through hole. The gas collecting component 11323 is connected to the heat exchange component 1130 and is connected to the gas collecting port, so that the gas can be transferred from the gas collecting component 11323 to the external space. The gas collecting component 11323 plays the role of collecting and transferring gas.

[0126] The gas collecting component 11323 can adopt a block structure or a shell structure, etc. The gas collecting component 11323 can be understood as a chimney structure capable of collecting and transporting gas. The gas collecting component 11323 connects the gas collecting port and the exhaust channel, so that the exhaust port of the gas collecting component 11323 is connected to the exhaust channel. For example, the gas inlet end of the gas collecting component 11323 is connected to the heat exchange component 1130, and the gas outlet end of the gas collecting component 11323 is connected to the box body 1120. For example, if an exhaust channel is formed inside the frame 1122 of the box body 1120, then the gas outlet end of the gas collecting component 11323 is connected to the frame 1122 and communicates with the exhaust channel.

[0127] In this embodiment, the gas collecting component 11323 is used to collect gas and transport it to the exhaust channel. The gas collecting component 11323 is used to collect and transmit gas. The setting of the gas collecting component 11323 is conducive to improving the convenience of connection and assembly.

[0128] In some embodiments, referring to Figures 2 and 15, the heat exchange component 1130 has a heat exchange wall 1133 and a structural wall 1134 disposed opposite to each other. An air inlet 11321 is disposed on the heat exchange wall 1133. The battery cell assembly 1110 is disposed close to or abuts against the heat exchange wall 1133. An air outlet 11322 is disposed on the structural wall 1134. The battery device 1100 also includes an exhaust valve 1137, which is connected to the heat exchange component 1130 and communicates with the air outlet 11322.

[0129] The heat exchange wall 1133 and the structural wall 1134 are two opposing walls of the heat exchange component 1130. The heat exchange wall 1133 is a structural part that exchanges heat with the battery cell assembly 1110. The heat exchange wall 1133 can be understood as a plate structure capable of heat exchange. For example, the exterior of the heat exchange component 1130 is flat. The heat exchange flow channel 1131 and the air guide channel 1132 are both located between the heat exchange wall 1133 and the structural wall 1134. The battery cell assembly 1110 is arranged close to or abutting against the surface (i.e., the heat exchange surface) of the heat exchange wall 1133.

[0130] Since the heat exchange surface faces the accommodating space 1123, the air inlet 11321 is located on the heat exchange wall 1133, and the air outlet 11322 is located on the structural wall 1134. When the heat exchange component 1130 is located at the bottom of the battery cell assembly 1110, the structural wall 1134 can be understood as the bottom wall of the heat exchange component 1130, allowing gas to be discharged downwards through the air outlet 11322, forming a bottom-spray exhaust method. An exhaust valve 1137 needs to be installed on the air outlet 11322. The exhaust valve 1137 can be understood as an explosion-proof valve. When the internal pressure of the battery device 1100 reaches a certain dangerous threshold, the explosion-proof valve can open to release the internal pressure and high-temperature gas of the battery device 1100, thereby reducing the risk of thermal runaway of the battery device 1100.

[0131] In this embodiment, the gas outlet 11322 is set on the structural wall 1134 and an exhaust valve 1137 is installed, so that the battery device 1100 forms a bottom-spray exhaust method, allowing the gas to be discharged directly downwards, which helps to reduce the risk of leakage and reduce the impact on the internal and upper components of the battery device 1100. It also helps to reduce the risk of short circuits, corrosion and other problems caused by gas contacting electrical components, and reduces the risk of thermal runaway.

[0132] In some embodiments, as shown in Figures 2-4, 6 and 7, each heat exchange channel 1131 extends along the first direction X.

[0133] The first direction X is the direction of the extension length of the heat exchange channel 1131. For the heat exchange component 1130, the heat exchange component 1130 can adopt a plate-like structure. Taking the heat exchange component 1130 located at the bottom of the battery cell assembly 1110 as an example, the first direction X can be the width direction of the heat exchange component 1130. The channel inlet and channel outlet are located at both ends of the width direction of the heat exchange component 1130. Correspondingly, the first confluence component 1140 is located at one end of the width direction of the heat exchange component 1130.

[0134] Optionally, the first direction X can also be the length direction of the heat exchange component 1130. If the flow channel inlet and flow channel outlet are located at both ends of the length direction of the heat exchange component 1130, then the first confluence component 1140 is located at one end of the length direction of the heat exchange component 1130.

[0135] Each heat exchange channel 1131 extends along the first direction X. It is understood that the heat exchange channels 1131 are parallel and spaced apart. Similarly, each air guide channel 1132 between any two adjacent heat exchange channels 1131 also extends along the first direction X, and is also parallel and spaced apart. The air guide channels 1132 and heat exchange channels 1131 are also arranged parallel to each other. Therefore, both the heat exchange channels 1131 and the air guide channels 1132 extend in a straight line, forming rows or columns within the heat exchange component 1130. This more regular arrangement of the heat exchange channels 1131 facilitates smooth flow of the heat exchange fluid.

[0136] In this embodiment, the heat exchange channels 1131 are spaced apart and arranged in parallel, which makes the heat exchange channels 1131 more regularly and uniformly distributed inside the heat exchange fluid, which is conducive to improving the flow rate of the heat exchange fluid and thus improving the heat exchange efficiency of the heat exchange component 1130.

[0137] In some embodiments, as shown in FIG4-6, the first busbar component 1140 extends along a second direction Y, which is perpendicular to the first direction X.

[0138] The second direction Y is perpendicular to the first direction X. Taking the first direction X as the width direction of the heat exchange component 1130 as an example, the second direction Y is the length direction of the heat exchange component 1130. It can be seen that the first confluence component 1140 extends along the length direction of the heat exchange component 1130, and multiple first confluence outlets 1143 are arranged at intervals along the length direction of the first confluence component 1140. The first confluence component 1140 is located at one end of the width direction of the heat exchange component 1130, so that each first confluence outlet 1143 is connected to the inlet of each heat exchange channel 1131 in a one-to-one correspondence. A sealing structure can be added between the first confluence outlet 1143 and the inlet of the heat exchange channel 1131 to improve the sealing performance between the first confluence outlet 1143 and the inlet of the channel and reduce the risk of leakage.

[0139] The first confluence component 1140 is positioned as close as possible to the edge in the width direction of the heat exchange component 1130, so that the length of the heat exchange channel 1131 is maximized, thereby increasing the length and area of ​​the heat exchange and improving the heat exchange efficiency.

[0140] In this embodiment, the length direction of the first confluence component 1140 is perpendicular to the extension direction of each heat exchange channel 1131, so that the first confluence component 1140 can be arranged at an edge position along the length direction of the heat exchange component 1130, making the position arrangement of the first confluence component 1140 on the heat exchange component 1130 more reasonable and conducive to improving space utilization.

[0141] In some embodiments, as shown in FIG15-20, the heat exchange component 1130 has a first receiving groove 1135 on one side opposite to the battery cell assembly 1110, and the first busbar component 1140 is housed in the first receiving groove 1135. The groove wall of the first receiving groove 1135 corresponding to each heat exchange channel 1131 respectively extends to each first busbar outlet 1143.

[0142] The first busbar component 1140 is positioned such that it is located on the side of the heat exchange component 1130 opposite to the battery cell assembly 1110; that is, the first busbar component 1140 is mounted on the structural wall 1134 of the heat exchange component 1130. To reduce the outward protrusion of the first busbar component 1140 on the surface of the heat exchange component 1130, a first receiving groove 1135 is formed on the side of the heat exchange component 1130 opposite to the battery cell assembly 1110; that is, the first receiving groove 1135 is formed on the structural wall 1134.

[0143] The first busbar component 1140 can be accommodated in the first receiving groove 1135. Of course, the first busbar component 1140 can be fully or partially accommodated in the first receiving groove 1135. The first busbar component 1140 can protrude from the opening of the first receiving groove 1135 by a preset height, which can be 0mm-0.5mm.

[0144] Since the first manifold component 1140 needs to be connected to each heat exchange channel 1131, it is known that the wall of the first receiving groove 1135 needs to have through openings corresponding to each heat exchange channel 1131, so that each heat exchange channel 1131 can be connected (or penetrate) to the first manifold outlet 1143 on the first manifold component 1140 at the through opening. At the through opening, a sealing treatment can be performed between the first manifold component 1140 and the heat exchange component 1130.

[0145] In this embodiment, by providing the first receiving groove 1135, the heat exchange component 1130 can partially or completely hide the first confluence component 1140, which helps to save space and improve space utilization.

[0146] In some embodiments, as shown in FIG2, the battery device 1100 further includes a first sealing plate structure 1160, which is connected to the side of the heat exchange component 1130 facing away from the battery cell assembly 1110, and the first sealing plate structure 1160 covers at least the first receiving groove 1135.

[0147] The first sealing plate structure 1160 can be understood as a bottom protective plate. For example, the heat exchange component 1130 is located at the bottom of the housing body 1120 to support and support the battery cell assembly 1110 at the bottom. Since the first receiving groove 1135 is opened at the bottom of the heat exchange component 1130, by adding the first sealing plate structure 1160 and connecting the first sealing plate structure 1160 to the bottom of the heat exchange component 1130, the first sealing plate structure 1160 can cover the opening of the first receiving groove 1135, seal the first receiving groove 1135, and support the first busbar component 1140. On the other hand, the connection between the first sealing plate structure 1160 and the heat exchange component 1130 can also enhance the structural strength of the heat exchange component 1130.

[0148] The first sealing plate structure 1160 is a plate-shaped structure. Similarly, the heat exchange component 1130 adopts a plate-shaped structure. Therefore, the outer contour shape and size of the first sealing plate structure 1160 can be the same as the outer contour shape and size of the heat exchange component 1130, so that the first sealing plate structure 1160 fits and covers the bottom surface of the heat exchange component 1130.

[0149] The first sealing plate structure 1160 and the heat exchange component 1130 can be connected in a fixed or detachable manner. For example, the first sealing plate structure 1160 and the heat exchange component 1130 can be connected by welding, bonding or fastening components.

[0150] A sealing component 1150 may be added between the first sealing plate structure 1160 and the heat exchange component 1130. The sealing component 1150 may be at least circumferentially arranged around the opening of the first receiving groove 1135, or the sealing component 1150 may be circumferentially arranged near the edge of the first sealing plate structure 1160, thereby improving the sealing performance between the first sealing plate structure 1160 and the heat exchange component 1130.

[0151] In this embodiment, by adding a first sealing plate structure 1160, it is beneficial to protect the first busbar component 1140 and to enhance the structural strength of the heat exchange component 1130.

[0152] It is known that resistance is easily generated when the heat exchange fluid enters the heat exchange channel 1131. Therefore, when the heat exchange fluid flows out of the heat exchange channel 1131, if the heat exchange fluid flows outward through a centralized outlet, there will also be a resistance problem. Therefore, in some embodiments, referring to Figures 2, 8, 9, 16 and 17, the battery device 1100 also includes a second confluence component 1180 connected to the heat exchange component 1130. The second confluence component 1180 has a second confluence channel 1181 inside. The second confluence component 1180 is equipped with a second confluence outlet 1183 and a plurality of second confluence inlets 1182 that are all connected to the second confluence channel 1181. Each second confluence inlet 1182 is connected to each heat exchange channel 1131 in a one-to-one correspondence.

[0153] The second manifold 1180 is located at the outlet of the heat exchange channel 1131 and is used to transport the heat exchange fluid after heat exchange through the heat exchange channel 1131 to the outside. The second manifold 1180 is used for converging and guiding flow. Specifically, a second converging channel 1181 is opened or formed inside the second manifold 1180. The second converging channel 1181 can adopt a shell structure or a tubular structure. The second converging channel 1181 can be understood as a shell cavity or a tube cavity, etc.

[0154] Multiple second inlets 1182 are provided on the second manifold component 1180. Since the second manifold component 1180 is connected to the heat exchange component 1130 for outputting the heat exchange fluid in the heat exchange channel 1131, the multiple second inlets 1182 are spaced apart, and each second inlet 1182 is connected to the outlet of each heat exchange channel 1131. Thus, the heat exchange fluid can flow from each heat exchange channel 1131 through the outlet into the second manifold component. The fluid flows into the second confluence channel 1181 and then out to the outside of the battery device 1100. Thus, the same volume of heat exchange fluid is dispersed through multiple heat exchange channels 1131 and enters the second confluence channel 1181 at different positions from the channel outlets. Therefore, the flow resistance at the position where the outlet of each heat exchange channel 1131 is connected to the inlet of the second channel is relatively reduced and the flow velocity is increased, which helps to improve the flow rate of the heat exchange fluid and thus improve the heat exchange efficiency.

[0155] Understandably, the second manifold 1180 needs to have a second manifold outlet 1183 for the heat exchange fluid to flow out. The second manifold outlet 1183 is connected to the second manifold channel 1181. There may be one or more second manifold outlets 1183. For example, the second manifold 1180 extends in a linear shape, and there are two second manifold outlets 1183. The two extended ends of the second manifold 1180 can respectively form the second manifold outlets 1183. Alternatively, there is one second manifold inlet 1182, and one extended end of the second manifold 1180 forms the second manifold outlet 1183.

[0156] The second busbar component 1180 can be connected to the heat exchange component 1130 in a fixed or detachable manner. For example, the second busbar component 1180 and the heat exchange component 1130 can be fixed by welding or bonding, such as by brazing; or, for example, the second busbar component 1180 and the heat exchange component 1130 can be fixed by fastening components, such as bolt assemblies, riveting assemblies, etc.

[0157] In this embodiment, by connecting the second manifold 1180 to the heat exchange component 1130 and forming a second manifold channel 1181 with multiple second manifold inlets 1182 inside the second manifold 1180, and forming multiple heat exchange channels 1131 inside the heat exchange component 1130 corresponding to multiple second manifold outlets 1183, the flow resistance at the position where the outlet of each heat exchange channel 1131 is connected to the second manifold inlet 1182 is reduced, which helps to increase the flow rate of the heat exchange fluid and thus improve the heat exchange efficiency of the heat exchange component 1130.

[0158] In some embodiments, as shown in FIG2 and FIG15-20, each heat exchange channel 1131 extends along the first direction X, and the first confluence component 1140 and the second confluence component 1180 are distributed at both ends of the heat exchange channel 1131. The first confluence component 1140 and the second confluence component 1180 extend along the second direction Y, which is perpendicular to the first direction X.

[0159] Similarly, taking the first direction X as the width direction of the heat exchange component 1130 as an example, the second direction Y is the length direction of the heat exchange component 1130. It can be seen that the first confluence component 1140 and the second confluence component 1180 extend along the length direction of the heat exchange component 1130. Multiple first confluence outlets 1143 are arranged at intervals along the length direction of the first confluence component 1140. The first confluence component 1140 is located at one end of the width direction of the heat exchange component 1130, and the second confluence component 1180 is located at the other end of the width direction of the heat exchange component 1130. The first confluence component 1140 and the second confluence component 1180 are arranged opposite to each other at both ends of the width direction of the heat exchange component 1130. Each second confluence inlet 1182 is connected to the outlet of each heat exchange channel 1131. A sealing structure can be added between the second confluence inlet 1182 and the outlet of the heat exchange channel 1131 to improve the sealing performance between the second confluence inlet 1182 and the outlet of the channel and reduce the risk of leakage.

[0160] The second manifold 1180 is positioned as close as possible to the edge of the heat exchanger 1130 in the width direction, so as to maximize the length of the heat exchange channel 1131, thereby increasing the length and area of ​​the heat exchange and improving the heat exchange efficiency.

[0161] In this embodiment, the first confluence component 1140 and the second confluence component 1180 are arranged in parallel and on both sides of the heat exchange component 1130, respectively, to achieve the functions of diverting and confluencing the heat exchange fluid. The first confluence channel 1141 and the second confluence channel 1181 are both arranged perpendicular to each heat exchange channel 1131 to facilitate the smooth flow of the heat exchange fluid. The overall structure of the heat exchange component 1130, the first confluence component 1140, and the second confluence component 1180 is compact and reasonably arranged, which is conducive to improving the space utilization of the battery device 1100.

[0162] Referring to Figures 2 and 15-20, in some embodiments, the heat exchange component 1130 has a second receiving groove 1136 on one side facing away from the battery cell assembly 1110, and the second busbar component 1180 is housed in the second receiving groove 1136. The groove wall of the second receiving groove 1136 corresponding to each heat exchange channel 1131 respectively extends to each second busbar inlet 1182.

[0163] The second busbar component 1180 is positioned such that it is located on the side of the heat exchange component 1130 opposite to the battery cell assembly 1110; that is, the second busbar component 1180 is mounted on the structural wall 1134 of the heat exchange component 1130. To reduce the protrusion of the second busbar component 1180 on the surface of the heat exchange component 1130, a second receiving groove 1136 is formed on the side of the heat exchange component 1130 opposite to the battery cell assembly 1110; that is, the second receiving groove 1136 is formed on the structural wall 1134.

[0164] The second busbar component 1180 can be accommodated in the second receiving groove 1136. Of course, the second busbar component 1180 can be accommodated completely or partially in the first receiving groove 1135. The second busbar component 1180 can protrude from the groove opening of the second receiving groove 1136 by a preset height, which can be 0mm-0.5mm.

[0165] Since the second manifold component 1180 needs to be connected to each heat exchange channel 1131, it is known that the wall of the second receiving groove 1136 needs to have through openings corresponding to each heat exchange channel 1131, so that each heat exchange channel 1131 can be connected (or penetrate) to the first manifold inlet 1142 on the second manifold component 1180 at the through opening. At the through opening, a sealing treatment can be performed between the second manifold component 1180 and the heat exchange component 1130.

[0166] In this embodiment, by providing the second receiving groove 1136, the heat exchange component 1130 can partially or completely hide the second confluence component 1180, which helps to save space and improve space utilization.

[0167] Referring to FIG2, in some embodiments, the battery device 1100 further includes a second sealing plate structure 1170, which is connected to the side of the heat exchange component 1130 facing away from the battery cell assembly 1110, and the second sealing plate structure 1170 covers at least the second receiving groove 1136.

[0168] The second sealing plate structure 1170 can be understood as a bottom protective plate. For example, the heat exchange component 1130 is located at the bottom of the housing body 1120 to support and support the battery cell assembly 1110 at the bottom. Since the second receiving groove 1136 is opened at the bottom of the heat exchange component 1130, by adding the second sealing plate structure 1170 and connecting the second sealing plate structure 1170 to the bottom of the heat exchange component 1130, the second sealing plate structure 1170 can cover the opening of the second receiving groove 1136, seal the second receiving groove 1136, and support the second busbar component 1180. On the other hand, the connection between the second sealing plate structure 1170 and the heat exchange component 1130 can also enhance the structural strength of the heat exchange component 1130.

[0169] The second sealing plate structure 1170 and the heat exchange component 1130 can be connected in a fixed or detachable manner. For example, the second sealing plate structure 1170 and the heat exchange component 1130 can be connected by welding, bonding or fastening components.

[0170] The second sealing plate structure 1170 can be integrated with the first sealing plate structure 1160, so that the whole of the first sealing plate structure 1160 and the second sealing plate structure 1170 can fit and match the heat exchange component 1130 to cover the bottom surface of the heat exchange component 1130.

[0171] A sealing structure can also be added between the second sealing plate structure 1170 and the heat exchange component 1130. The sealing structure can be at least circumferentially arranged around the opening of the second receiving groove 1136. Alternatively, the sealing structure can be the aforementioned sealing component 1150. The first sealing plate structure 1160 and the second sealing plate structure 1170 are integrated into one structure, so that the sealing component 1150 is arranged around the first sealing plate structure 1160 and the second sealing plate structure 1170 near the edge, thereby improving the sealing performance between the first sealing plate structure 1160 and the second sealing plate structure 1170 and the heat exchange component 1130.

[0172] In this embodiment, by adding a second sealing plate structure 1170, it is beneficial to protect the second busbar component 1180 and to enhance the structural strength of the heat exchange component 1130.

[0173] Referring to Figures 10-15, in some embodiments, the outer contour of the first busbar component 1140 in the cross-section perpendicular to the second direction Y can be circular, elliptical, or polygonal, for example, the outer contour shape of the first busbar component 1140 can be rectangular, trapezoidal, etc. Taking the cross-sectional shape of the first busbar component 1140 as rectangular as an example, the first busbar component 1140 and the heat exchange component 1130 can be fixed by multi-position welding. Since the first busbar component 1140 is housed in the first receiving groove 1135, the first busbar component 1140 and the bottom surface of the first receiving groove 1135 do not need to be welded. The remaining exposed positions can all be welded to enhance the connection strength between the first busbar component 1140 and the heat exchange component 1130.

[0174] The first busbar component 1140 can protrude outward from the outside of the first receiving groove 1135 by a certain height. The first busbar component 1140 can also form a first flange 1146 outside the opening of the first receiving groove 1135, making the cross-sectional shape of the first busbar component 1140 "U"-shaped. The first flange 1146 can fit against the outer surface of the structural wall 1134 and can be welded and fixed to the structural wall 1134, for example, by brazing. The structure of the first flange 1146 helps to improve the connection strength between the first busbar component 1140 and the heat exchange component 1130.

[0175] The first busbar component 1140 can be formed by extrusion or by a combination of rolling and welding. The seam formed during the rolling process can be welded.

[0176] Similarly, referring to Figures 10-15, in some embodiments, the outer contour of the cross-section of the second busbar component 1180 perpendicular to the second direction Y can be circular, elliptical, or polygonal, for example, the outer contour shape of the cross-section of the second busbar component 1180 can be rectangular, trapezoidal, etc. Taking the cross-sectional shape of the second busbar component 1180 as rectangular as an example, the second busbar component 1180 and the heat exchange component 1130 can be fixed by multi-position welding. Since the second busbar component 1180 is housed in the second receiving groove 1136, the bottom surface of the second busbar component 1180 and the groove 1136 do not need to be welded. The remaining exposed positions can all be welded to enhance the connection strength between the second busbar component 1180 and the heat exchange component 1130.

[0177] The second busbar component 1180 can protrude outward from the second receiving groove 1136 by a certain height. The second busbar component 1180 can also form a second flange 1186 outside the opening of the second receiving groove 1136, making the cross-sectional shape of the second busbar component 1180 "U"-shaped. The second flange 1186 can fit against the outer surface of the structural wall 1134 and can be welded and fixed to the structural wall 1134, for example, by brazing. The structure of the second flange 1186 helps to improve the connection strength between the second busbar component 1180 and the heat exchange component 1130.

[0178] The second busbar component 1180 can be formed by extrusion or by a combination of rolling and welding. The seam formed during the rolling process can be welded.

[0179] The heat exchange wall 1133 can be made of a plate with a thickness greater than or equal to 1 mm, for example, the plate thickness is 1.5 mm to 4 mm. The structural wall 1134 can be made of a plate with a thickness greater than or equal to 2 mm, for example, the plate thickness is 2 mm to 4 mm. The thickness of the heat exchange wall 1133 can be less than the thickness of the structural wall 1134, which is beneficial to improving the heat exchange effect.

[0180] Referring to Figures 20 and 21, in some embodiments, the first busbar component 1140 and the second busbar component 1180 are connected by a connector 1190 to form an integral structure.

[0181] When the first busbar component 1140 and the second busbar component 1180 are both independent components, they need to be assembled separately. Therefore, in order to reduce the installation process, the first busbar component 1140 and the second busbar component 1180 are connected by a connecting part 1190, so that the first busbar component 1140, the second busbar component 1180 and the connecting part 1190 form an integral structure. During installation, the first busbar component 1140 and the second busbar component 1180 can be installed on the heat exchange component 1130 at one time, which helps to reduce the installation process.

[0182] The first busbar component 1140, the second busbar component 1180, and the connecting part 1190 can be connected by a fixed or detachable method, such as welding, bonding, interference fit, or fastener connection.

[0183] In this embodiment, the first busbar component 1140 and the second busbar component 1180 are connected by the connecting part 1190 to form an integral structure, which helps to reduce installation steps and improve installation speed.

[0184] Referring to Figures 20 and 21, in some embodiments, the first busbar component 1140 and the second busbar component 1180 are spaced apart and arranged opposite to each other, and the connecting portion 1190 is connected to one end of the first busbar component 1140 and one end of the second busbar component 1180, respectively.

[0185] The first busbar component 1140 and the second busbar component 1180 can both extend along the first direction X and are respectively arranged at both ends of the heat exchange channel 1131, such that the first busbar component 1140 and the second busbar component 1180 are spaced apart and arranged opposite each other, and are also arranged parallel to each other. The external shape of the first busbar component 1140 and the second busbar component 1180 can be rod-shaped.

[0186] The connecting part 1190 can also be rod-shaped. The connecting part 1190 can extend along the second direction Y so that the two ends of the connecting part 1190 can be connected to the first busbar 1140 and the second busbar 1180 respectively, so that the first busbar 1140, the second busbar 1180 and the connecting part 1190 form a whole, and the external shape of the whole structure is U-shaped.

[0187] As can be seen, the connecting portion 1190 is located at one end of the heat exchange component 1130 in the first direction X, which allows the connecting portion 1190 to avoid the central region of the heat exchange component 1130, thus reducing interference. The connecting portion 1190 can also be accommodated in the groove opened on the heat exchange component 1130, thereby partially or completely hiding the connecting portion 1190, reducing interference, and improving space utilization.

[0188] In this embodiment, the connecting portion 1190 is connected to one end of the first busbar component 1140 and the second busbar component 1180, so that the connecting portion 1190 can avoid the middle region of the heat exchange component 1130 and be located near the edge of the heat exchange component 1130, thereby helping to reduce the risk of interference between the connecting portion 1190 and other components.

[0189] Referring to Figures 20-21, in some embodiments, the first bus inlet 1142 and the second bus outlet 1183 are both disposed on the connecting portion 1190.

[0190] The first merging inlet 1142 is located on the connecting part 1190, indicating that a connecting channel needs to be provided on the connecting part 1190 to connect with the first merging channel 1141. The second merging outlet 1183 is located on the connecting part 1190, indicating that a connecting channel needs to be provided on the connecting part 1190 to connect with the second merging channel 1181.

[0191] Since the connecting portion 1190 is located between the first confluence component 1140 and the second confluence component 1180, it can be understood that the first confluence inlet 1142 and the second confluence outlet 1183 are both located in the area between the first confluence component 1140 and the second confluence component 1180. For example, if the heat exchange component 1130 has a symmetry axis Z, and the first confluence component 1140 and the second confluence component 1180 are symmetrically arranged on both sides of the symmetry axis Z, then the connecting portion 1190 spans both sides of the symmetry axis Z. The first confluence inlet 1142 and the second confluence outlet 1183 can be located close to the symmetry axis Z, and the first confluence inlet 1142 and the second confluence outlet 1183 can also be arranged symmetrically about the symmetry axis Z. Pipe structures can be connected to the first confluence inlet 1142 and the second confluence outlet 1183 respectively to facilitate connection with external fluid transport devices.

[0192] It should be noted that the two connecting channels inside the connecting part 1190 that connect the first merging channel 1141 and the second merging channel 1181 respectively need to be arranged in a non-connected manner. For example, the two connecting channels can be isolated by setting a partition plate structure.

[0193] In this embodiment, the first confluence inlet 1142 and the second confluence outlet 1183 are both arranged on the connecting part 1190 to achieve a centralized arrangement of the first confluence inlet 1142 and the second confluence outlet 1183, which facilitates the input and output of heat exchange fluid.

[0194] Referring to Figures 18 and 19, in some embodiments, the heat exchange component 1130 has a symmetry axis Z; the first confluence component 1140 includes a first confluence portion 1144 and a second confluence portion 1145 connected to the first confluence portion 1144. The first confluence portion 1144 and the second confluence portion 1145 are arranged at an angle. The first confluence portion 1144 is arranged parallel to the symmetry axis Z, and the second confluence portion 1145 extends toward the symmetry axis Z. A first confluence outlet 1143 is opened in the first confluence portion 1144, and a first confluence inlet 1142 is opened in the second confluence portion 1145 and is located at one end of the second confluence portion 1145 near the symmetry axis Z.

[0195] The axis of symmetry Z of the heat exchange component 1130 can be understood as the axis of symmetry Z of the heat exchange surface or heat exchange wall 1133. The first confluence component 1140 and the second confluence component 1180 are respectively arranged on both sides of the axis of symmetry Z.

[0196] For the first busbar component 1140, the first busbar portion 1144 is the part connected to the heat exchange channel 1131. Therefore, the first busbar inlet 1142 is opened on the first busbar portion 1144, which can extend along the first direction X. The second busbar portion 1145 is arranged at an angle to the first busbar portion 1144, and this angle is defined as the first included angle α. The first included angle α can be any value between 0° and 90°. For example, the second busbar portion 1145 extends along the second direction Y, making the exterior of the first busbar component 1140 L-shaped. It can be seen that one end of the second busbar portion 1145 is connected to the first busbar portion 1144, and the other end extends toward the axis of symmetry Z. The first busbar inlet 1142 is opened on the second busbar portion 1145 and is arranged close to the axis of symmetry Z of the heat exchange component 1130. It can be seen that the first busbar inlet 1142 is opened at one end of the heat exchange component 1130 and in the region near the middle of that end.

[0197] Referring to FIG22, a first curved connection portion 1147 is formed between the first confluence portion 1144 and the second confluence portion 1145. Generally, the surfaces of the first confluence portion 1144 and the second confluence portion 1145 protrude to form an extended flange structure. However, at the position of the first curved connection portion 1147, the extended flange structure should be removed, which helps to reduce the wrinkling problem during bending.

[0198] Referring to Figures 18 and 19, for the second busbar component 1180, the third busbar portion 1184 is the part connected to the heat exchange channel 1131. Therefore, the second busbar inlet 1182 is opened on the third busbar portion 1184. The third busbar portion 1184 can be arranged to extend along the first direction X. The third busbar portion 1184 and the first busbar portion 1144 are arranged symmetrically about the axis of symmetry Z. The third busbar 1184 and the fourth busbar 1185 are arranged at an angle, which is defined as the second included angle β. The second included angle β can be any value between 0° and 90°. For example, the fourth busbar 1185 extends along the second direction Y, so that the exterior of the second busbar component 1180 is L-shaped. It can be seen that one end of the fourth busbar 1185 is connected to the third busbar 1184, and the other end extends toward the axis of symmetry Z. The second busbar outlet 1183 is opened on the fourth busbar 1185 and is arranged close to the axis of symmetry Z of the heat exchange component 1130. It can be seen that the second busbar outlet 1183 is opened at one end of the heat exchange component 1130 and is close to the middle of that end.

[0199] Referring to FIG22, a second curved connection 1187 is formed between the third busbar portion 1184 and the fourth busbar portion 1185. Generally, the surfaces of the third busbar portion 1184 and the fourth busbar portion 1185 protrude to form an extended flange structure. However, at the position of the second curved connection 1187, the extended flange structure should be removed, which helps to reduce the wrinkling problem during bending.

[0200] In this embodiment, the first confluence component 1140 and the second confluence component 1180 are arranged symmetrically on both sides of the axis of symmetry Z, so that the first confluence inlet 1142 and the second confluence outlet 1183 can be arranged close to each other on both sides of the axis of symmetry Z of the heat exchange component 1130. This makes it easier to realize the centralized arrangement of the first confluence inlet 1142 and the second confluence outlet 1183, which is beneficial to improve the compactness of the structural arrangement and facilitates the input and output of the heat exchange fluid.

[0201] In some specific embodiments, referring to Figures 1-17, the battery device 1100 includes a battery cell assembly 1110, a heat exchange component 1130, and a first busbar component 1140. The heat exchange component 1130 has multiple heat exchange channels 1131 internally, and the battery cell assembly 1110 is configured close to or in contact with the heat exchange component 1130. The first busbar component 1140 is connected to the heat exchange component 1130 and has a first busbar channel 1141 internally. The first busbar component 1140 has a first busbar inlet 1142 and multiple first busbar outlets 1143, all of which are connected to the first busbar channel 1141. Each first busbar outlet 1143 is connected to each heat exchange channel 1131. The battery device 1100 includes a housing body 1120, which is connected to the heat exchange component 1130 and together forms an accommodating space 1123. The battery cell assembly 1110 is housed within the accommodating space 1123. An air guide channel 1132 is formed between two adjacent heat exchange channels 1131, and the air guide channel 1132 is connected to the accommodating space 1123. The heat exchange component 1130 is provided with multiple air inlets 11321 and multiple air outlets 11322. Each air guide channel 1132 is connected to at least one air inlet 11321, and each air guide channel 1132 is connected to at least one air outlet 11322. The battery device 1100 has... The accommodating space 1123 is connected to an exhaust channel, and each air outlet 11322 is connected to the exhaust channel. The heat exchange component 1130 has a first accommodating groove 1135 on its side facing away from the battery cell assembly 1110. A first confluence component 1140 is housed within the first accommodating groove 1135, and the groove walls of the first accommodating groove 1135 corresponding to each heat exchange channel 1131 respectively extend to each first confluence outlet 1143. The battery device 1100 also includes a first sealing plate structure 1160, which is connected to the side of the heat exchange component 1130 facing away from the battery cell assembly 1110, and at least covers the first accommodating groove 1135. The battery device 1100 also includes... A second confluence component 1180 is connected to the heat exchange component 1130. The second confluence component 1180 has a second confluence channel 1181 inside. The second confluence component 1180 is equipped with a second confluence outlet 1183 and a plurality of second confluence inlets 1182 that are all connected to the second confluence channel 1181. Each second confluence inlet 1182 is connected to each heat exchange channel 1131 in a one-to-one correspondence. Each heat exchange channel 1131 extends along a first direction X. The first confluence component 1140 and the second confluence component 1180 are distributed at both ends of the heat exchange channel 1131. The first confluence component 1140 and the second confluence component 1180 extend along a second direction Y, which is perpendicular to the first direction X.The heat exchange component 1130 has a second receiving groove 1136 on one side facing away from the battery cell assembly 1110. The second busbar component 1180 is housed in the second receiving groove 1136. The groove walls of the second receiving groove 1136 corresponding to each heat exchange channel 1131 respectively extend to each second busbar inlet 1182. The battery device 1100 also includes a second sealing plate structure 1170, which is connected to the side of the heat exchange component 1130 facing away from the battery cell assembly 1110 and covers at least the second receiving groove 1136. The heat exchange component 1130 has a symmetry axis Z. The first busbar component 1140 includes a first busbar portion 1144 and a second busbar portion 1145 connected to the first busbar portion 1144. The first busbar portion 1144 and the second busbar portion 1145 are arranged at an angle, and the first busbar portion 1144 is parallel to the symmetry axis. The second busbar portion 1145 is arranged in a Z-shape, extending towards the axis of symmetry Z. A first busbar outlet 1143 is located in the first busbar portion 1144, and a first busbar inlet 1142 is located in the second busbar portion 1145, near the end of the second busbar portion 1145 close to the axis of symmetry Z. Alternatively, the second busbar component 1180 includes a third busbar portion 1184 and a fourth busbar portion 1185 connected to the third busbar portion 1184. The third busbar portion 1184 and the fourth busbar portion 1185 are arranged at an angle, parallel to the axis of symmetry Z. The fourth busbar portion 1185 extends towards the axis of symmetry Z. A second busbar inlet 1182 is located in the third busbar portion 1184, and a second busbar outlet 1183 is located in the fourth busbar portion 1185, in the region of the fourth busbar portion 1185 near the center of the heat exchange component 1130.

[0202] According to some embodiments of this application, this application also provides an energy storage device, which includes a power conversion device and the energy storage device in the above embodiments. The power conversion device is used to electrically connect the power generation device and the energy storage device.

[0203] Specifically, the energy storage device may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices 1100, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0204] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0205] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0206] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0207] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0208] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 1100 via piping to regulate the temperature of the individual battery cells.

[0209] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0210] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as the Insulation Monitoring Module (IMM), the Master Battery Management Unit (MBMU), the Ethernet (ETH) module, and the fiber optic conversion module.

[0211] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0212] As an example, a power distribution module can be used to distribute power to modules in an energy storage device that require electricity.

[0213] According to some embodiments of this application, this application also provides an energy storage system, which includes a power conversion device and an energy storage device as described in the above embodiments. The power conversion device is used to electrically connect the power generation device and the energy storage device.

[0214] In some embodiments, the energy storage system may include one or more energy storage devices and a power conversion system (PCS), wherein the power conversion system is used to connect the power generation device and the energy storage device. The power generation device generates electrical energy, which can be stored in the energy storage device through the power conversion system. As examples, the power generation device may specifically be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. The specific type of power generation device is not limited in this application.

[0215] According to some embodiments of this application, referring to FIG1, this application also provides an electrical device, which includes the battery device 1100 in the above embodiments, the energy storage device in the above embodiments, or the energy storage system in the above embodiments. The battery device 1100 is used to store or provide electrical energy.

[0216] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0217] The examples of electrical devices in this application are based on the examples of the battery device 1100 described above. The examples of electrical devices include all the technical effects of the examples of the battery device 1100 described above, and will not be repeated here.

[0218] According to some embodiments of this application, this application also provides a charging network, which includes charging piles and energy storage devices or energy storage systems as described in the above embodiments, wherein the energy storage devices are used to provide electrical energy to the charging piles.

[0219] For example, the charging network includes charging stations and energy storage devices. The charging stations are electrically connected to the energy storage devices, which provide power to the charging stations. The charging stations are also electrically connected to a battery unit 1100 in the energy storage devices via cables. The battery unit 1100 can provide its stored electrical energy to the charging stations. The charging stations have one or more connectors for connecting to electrical devices (such as vehicle 1000) to replenish their power.

[0220] Energy storage devices can be located inside the charging pile (e.g., an integrated energy storage and charging unit) or outside the charging pile.

[0221] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A battery device (1100), characterized in that, include: Battery cell module (1110); The heat exchange component (1130) has multiple heat exchange channels (1131) inside, and the battery cell assembly (1110) is arranged close to or in contact with the heat exchange component (1130); A first flow junction component (1140) is connected to the heat exchange component (1130). The first flow junction component (1140) has a first flow junction channel (1141) inside. The first flow junction component (1140) is provided with a first flow junction inlet (1142) and a plurality of first flow junction outlets (1143) that are all connected to the first flow junction channel (1141). Each first flow junction outlet (1143) is connected to each heat exchange flow channel (1131) in a one-to-one correspondence.

2. The battery device (1100) as claimed in claim 1, characterized in that, The battery device (1100) further includes a housing body (1120), which is connected to the heat exchange component (1130) and together forms an accommodating space (1123). The battery cell assembly (1110) is housed in the accommodating space (1123). An air guide channel (1132) is formed between two adjacent heat exchange channels (1131), and the air guide channel (1132) is connected to the accommodating space (1123).

3. The battery device (1100) as claimed in claim 2, characterized in that, The heat exchange component (1130) is provided with a plurality of air inlets (11321) and a plurality of air outlets (11322). Each air channel (1132) is connected to at least one air inlet (11321), and each air channel (1132) is connected to at least one air outlet (11322).

4. The battery device (1100) as claimed in claim 3, characterized in that, The battery device (1100) has an exhaust passage communicating with the accommodating space (1123), and each of the air outlets (11322) is configured to communicate with the exhaust passage.

5. The battery device (1100) as claimed in claim 4, characterized in that, Each of the air outlets (11322) converges and forms an air collection port on the heat exchange component (1130); the battery device (1100) also includes an air collection component (11323), which is connected to the heat exchange component (1130) and connects the air collection port and the exhaust passage.

6. The battery device (1100) as claimed in claim 3, characterized in that, The heat exchange component (1130) has a heat exchange wall (1133) and a structural wall (1134) arranged opposite to each other. The air inlet (11321) is disposed on the heat exchange wall (1133). The battery cell assembly (1110) is disposed close to or abuts against the heat exchange wall (1133). The air outlet (11322) is disposed on the structural wall (1134). The battery device (1100) also includes an exhaust valve (1137), which is connected to the heat exchange component (1130) and communicates with the air outlet (11322).

7. The battery device (1100) as claimed in claim 1, characterized in that, Each of the heat exchange channels (1131) is arranged to extend along the first direction (X).

8. The battery device (1100) as claimed in claim 7, characterized in that, The first busbar component (1140) extends along a second direction (Y), which is perpendicular to the first direction (X).

9. The battery device (1100) as claimed in claim 1, characterized in that, The heat exchange component (1130) has a first receiving groove (1135) on one side opposite to the battery cell assembly (1110). The first confluence component (1140) is housed in the first receiving groove (1135). The groove wall of the first receiving groove (1135) corresponding to each of the heat exchange channels (1131) respectively extends to each of the first confluence outlets (1143).

10. The battery device (1100) as claimed in claim 9, characterized in that, The battery device (1100) further includes a first sealing plate structure (1160), which is connected to the side of the heat exchange component (1130) opposite to the battery cell assembly (1110), and the first sealing plate structure (1160) covers at least the first receiving groove (1135).

11. The battery device (1100) according to any one of claims 1-10, characterized in that, The battery device (1100) further includes a second busbar (1180) connected to the heat exchange component (1130). The second busbar (1180) has a second busbar channel (1181) inside. The second busbar (1180) is provided with a second busbar outlet (1183) and a plurality of second busbar inlets (1182) that are all connected to the second busbar channel (1181). Each second busbar inlet (1182) is connected to each heat exchange channel (1131) in a one-to-one correspondence.

12. The battery device (1100) as claimed in claim 11, characterized in that, Each of the heat exchange channels (1131) extends along a first direction (X). The first confluence component (1140) and the second confluence component (1180) are distributed at both ends of the heat exchange channel (1131). The first confluence component (1140) and the second confluence component (1180) extend along a second direction (Y), which is perpendicular to the first direction (X).

13. The battery device (1100) as claimed in claim 11, characterized in that, The heat exchange component (1130) has a second receiving groove (1136) on one side opposite to the battery cell assembly (1110). The second busbar component (1180) is housed in the second receiving groove (1136). The groove wall of the second receiving groove (1136) corresponding to each of the heat exchange channels (1131) respectively extends to each of the second busbar inlets (1182).

14. The battery device (1100) as claimed in claim 13, characterized in that, The battery device (1100) further includes a second sealing plate structure (1170), which is connected to the side of the heat exchange component (1130) opposite to the battery cell assembly (1110), and the second sealing plate structure (1170) covers at least the second receiving groove (1136).

15. The battery device (1100) as claimed in claim 11, characterized in that, The first busbar component (1140) and the second busbar component (1180) are connected by a connector (1190) to form an integral structure.

16. The battery device (1100) as claimed in claim 15, characterized in that, The first busbar component (1140) and the second busbar component (1180) are spaced apart and arranged opposite to each other, and the connecting part (1190) is connected to one end of the first busbar component (1140) and one end of the second busbar component (1180) respectively.

17. The battery device (1100) as claimed in claim 16, characterized in that, The first confluence inlet (1142) and the second confluence outlet (1183) are both located on the connecting part (1190).

18. The battery device (1100) as claimed in claim 11, characterized in that, The heat exchange component (1130) has a symmetry axis (Z); the first confluence component (1140) includes a first confluence portion (1144) and a second confluence portion (1145) connected to the first confluence portion (1144), the first confluence portion (1144) and the second confluence portion (1145) are arranged at an angle, the first confluence portion (1144) is arranged parallel to the symmetry axis (Z), the second confluence portion (1145) extends toward the symmetry axis (Z), the first confluence outlet (1143) is opened in the first confluence portion (1144), the first confluence inlet (1142) is opened in the second confluence portion (1145) and is located at one end of the second confluence portion (1145) near the symmetry axis (Z); and / or The second busbar component (1180) includes a third busbar portion (1184) and a fourth busbar portion (1185) connected to the third busbar portion (1184). The third busbar portion (1184) and the fourth busbar portion (1185) are arranged at an angle. The third busbar portion (1184) is arranged parallel to the axis of symmetry (Z). The fourth busbar portion (1185) extends toward the axis of symmetry (Z). The second busbar inlet (1182) is opened in the third busbar portion (1184), and the second busbar outlet (1183) is opened in the fourth busbar portion (1185) and is located in the region of the fourth busbar portion (1185) near the middle of the heat exchange component (1130).

19. An energy storage device, characterized in that, It includes a plurality of battery devices (1100) as described in any one of claims 1-18, the battery devices (1100) being used to store or provide electrical energy.

20. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device as described in claim 19, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

21. An electrical appliance, characterized in that, The battery device (1100) includes any one of claims 1-18, the energy storage device of claim 19, or the energy storage system of claim 20, wherein the battery device (1100) is used to store or provide electrical energy.

22. A charging network, characterized in that, It includes a charging pile and an energy storage device as described in claim 19 or an energy storage system as described in claim 20, wherein the energy storage device is used to provide electrical energy to the charging pile.

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