Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device is used for connecting a side plate and a heat management assembly of the battery device, the battery device comprises battery monomer assemblies, the heat management assembly, the side plate and a connecting structure, and the battery monomer assemblies are stacked and arranged along a first direction; a flow channel for circulating a heat management medium is enclosed between the first heat management component and the second heat management component, and the battery monomer assembly is carried on the first heat management component. In the third direction, at least part of the side plates are arranged on the two sides of the battery monomer assembly, the connecting structure comprises a first connecting part, the first connecting part is connected to the ends, close to the heat management assembly in the second direction, of the side plates and is arranged at the end, in the third direction, of the heat management assembly, and the projection of the first connecting part on the heat management assembly in the third direction is equal to the projection of the second connecting part. The first heat management component is at least partially located and is connected with the first heat management component and the second heat management component. The battery device is used for providing electric energy for electric equipment.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and in particular, to a battery device and an electrical device. Background Art

[0002] New energy batteries are increasingly widely used in life and industries. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also increasingly used in the energy storage field and so on.

[0003] In the related art, a battery device includes a thermal management component, a side plate, and battery cells. The side plate is connected to the thermal management component to form a space for accommodating the battery cells. The battery cells are carried on the thermal management component, and the thermal management component dissipates heat from the battery cells. To ensure the overall reliability of the battery device, the connection relationship between the side plate and the thermal management component is particularly important. Summary of the Utility Model

[0004] To solve the above technical problems, this application provides a battery device and an electrical device for connecting the side plate and the thermal management component of the battery device.

[0005] This application is implemented through the following technical solutions.

[0006] In a first aspect of this application, a battery device is provided, which includes a battery cell assembly, a thermal management component, a side plate, and a connection structure. The battery cell assembly is stacked and arranged in a first direction. The thermal management component includes a first thermal management part and a second thermal management part stacked in a second direction. A flow channel for flowing a thermal management medium is formed between the first thermal management part and the second thermal management part. The battery cell assembly is carried on the first thermal management part. Along a third direction, at least part of the side plate is disposed on both sides of the battery cell assembly. There is a connection structure between the side plate and the thermal management component. The connection structure includes a first connection part. The first connection part is connected to the end of the side plate close to the thermal management component in the second direction and is disposed at the end of the thermal management component in the third direction. Along the third direction, the projection of the first connection part on the thermal management component is at least partially located on the first thermal management part and is respectively connected to the first thermal management part and the second thermal management part. Wherein, the first direction, the second direction, and the third direction intersect pairwise.

[0007] In the technical solution of the embodiment of this application, a flow channel is formed between the first thermal management part and the second thermal management part, and a thermal management medium can flow in the flow channel. Since the battery cell assembly is carried on the first thermal management part, the flow of the thermal management medium can take away the heat on the battery cell assembly, thereby realizing heat dissipation of the battery cell assembly. Along the third direction, since at least part of the side plate is disposed on both sides of the battery cell assembly, the side plate can provide protection for both ends of the battery cell assembly in the third direction.

[0008] Since the first connecting portion has a projection on the first heat management component along the third direction, it is convenient for the first connecting portion to be connected to the first heat management component and the second heat management component respectively. By providing the first connecting portion, it is convenient for the side plate to be connected to the first heat management component and the second heat management component respectively, and the connection strength between the side plate and the heat management assembly can also be ensured, guaranteeing the overall reliability of the battery device.

[0009] In some embodiments of the present application, the connection structure further includes a second connecting portion. The second connecting portion is provided at the end of the heat management assembly in the third direction, and the second connecting portion is at least located between the first connecting portion and the heat management assembly. Along the third direction, the second connecting portion has partial projections on both the first heat management component and the second heat management component. The second connecting portion is connected to the first heat management component and the second heat management component respectively, and is connected to the first connecting portion.

[0010] With such an arrangement, along the third direction, since the second connecting portion has partial projections on both the first heat management portion and the second heat management portion, it is convenient for the second connecting portion to be connected to the first heat management portion and the second heat management portion respectively, and thus it is convenient to use the second connecting portion to realize the separate connection of the first connecting portion to the first heat management component and the second heat management component.

[0011] In some embodiments of the present application, the first connecting portion and the second connecting portion are connected by snap connection and / or bonding and / or welding and / or threaded connection.

[0012] With such an arrangement, the connection between the first connecting portion and the second connecting portion can be realized by the combination of one or more of snap connection, bonding, welding, and threaded connection, ensuring the diversity and reliability of the connection.

[0013] In some embodiments of the present application, the second connecting portion includes a first clamping portion and a second clamping portion. The first clamping portion is connected to the end of the first heat management component in the third direction, and the second clamping portion is connected to the end of the second heat management component in the third direction. The first clamping portion and the second clamping portion are spaced apart to form a snap connection space, and the first connecting portion is snapped into the snap connection space.

[0014] With such an arrangement, the second connecting portion is arranged in the form of a first clamping portion and a second clamping portion, and a snap connection space is formed between the first clamping portion and the second clamping portion. By snapping the first connecting portion into the snap connection space, the snap connection between the first connecting portion and the second connecting portion is realized, and thus the separate connection of the first connecting portion to the first heat management component and the second heat management component is realized.

[0015] In some embodiments of the present application, the second clamping portion includes a first clamping plate and a second clamping plate connected to each other. Along the second direction, the first clamping plate is located on the side of the first clamping portion away from the battery cell assembly. Along the third direction, the first clamping plate is located between the second clamping plate and the second heat management component, and is spaced apart from the second clamping plate and connected to the second heat management component. The first clamping portion is spaced apart from the second clamping plate to form a clamping space, and the first connecting portion is located on the side of the first clamping portion away from the first heat management component and abuts between the first clamping plate and the second clamping plate.

[0016] With such an arrangement, the first connecting portion can not only be snapped into the clamping space, but also be clamped by the first clamping plate and the second clamping plate, so as to ensure the clamping stability of the first connecting portion.

[0017] In some embodiments of the present application, along the third direction, the surface of the side plate away from the battery cell assembly is flush with the surface of the second clamping plate away from the first clamping plate.

[0018] With such an arrangement, along the third direction, it can be ensured that the outer surface of the side plate is flush with the outer surface of the second clamping plate, thereby avoiding the relative protrusion of the second clamping plate and the side plate, so as to facilitate the arrangement of other adjacent components.

[0019] In some embodiments of the present application, along the arrangement direction of the first clamping plate and the second clamping plate, the size of the second clamping plate is equal to one-fourth to one-half of the size of the side plate.

[0020] With such an arrangement, the size of the second clamping plate protruding from the outer surface of the side plate can be controlled within a certain range, so as to facilitate the arrangement of other adjacent components.

[0021] In some embodiments of the present application, along the second direction, the first connecting portion includes a connecting plate and a clamping plate connected to each other. The connecting plate is located between the side plate and the clamping plate, and the connecting plate is located on the side of the first clamping portion away from the first heat management component. Along the second direction, the second clamping portion is located on the side of the first clamping portion away from the battery cell assembly and is spaced apart from the first clamping portion to form a clamping space, and the clamping plate is snapped into the clamping space.

[0022] With such an arrangement, along the second direction, the clamping space is formed between the first clamping portion and the second clamping portion. Since the clamping plate is clamped in the clamping space, the clamping plate belonging to the first connecting portion is respectively connected to the first heat management component and the second heat management component through the clamping of the first clamping portion and the second clamping portion, so as to realize the separate connection of the first connecting portion with the first heat management component and the second heat management component.

[0023] In some embodiments of the present application, along the second direction, the second clamping portion is at least partially located on the side of the first clamping portion that is away from the battery cell assembly, the third direction is the width direction of the battery cell assembly, and along the third direction, the distance between the surface of the second clamping portion close to the end of the second thermal management component and the center point of the side plate is less than or equal to one quarter of the width of the battery cell assembly.

[0024] With such an arrangement, along the width direction of the battery cell, it is possible to avoid the portion of the second clamping portion that is sunken into the second thermal management component being too large, thereby ensuring that the flow channel formed between the first thermal management component and the second thermal management component has a sufficient size, thereby ensuring the heat dissipation efficiency and effect of the thermal management component on the battery cell.

[0025] In some embodiments of the present application, the second clamping portion constitutes a partial wall of the flow channel.

[0026] With such arrangement, the second clamping portion not only serves as the wall of the flow channel, but can also be used to clamp the first connecting portion, thus improving the integration degree.

[0027] In some embodiments of the present application, the first connection portion and the second connection portion are insulated from each other.

[0028] Such a configuration can separate the electrical potential of the side plate from that of the thermal management component to prevent the side plate from conducting electricity.

[0029] In some embodiments of the present application, the battery device also includes an insulator, an insulator is arranged between the first clamping portion and the first connecting portion, the insulator separates the first clamping portion and the first connecting portion, an insulator is arranged between the second clamping portion and the first connecting portion, the insulator separates the second clamping portion and the first connecting portion; or, the first connecting portion is made of insulating material.

[0030] In this way, an insulator can be provided between the first clamping portion and the first connecting portion, and between the second clamping portion and the first connecting portion, so as to achieve an insulation setting between the first connecting portion and the second connecting portion. Alternatively, the first connecting portion can be directly made of an insulating material so that the first connecting portion itself is insulated, so as to achieve an insulation setting between the first connecting portion and the second connecting portion.

[0031] In some embodiments of the present application, the insulator includes at least one of an insulating patch and an insulating colloid.

[0032] With such configuration, insulation can be achieved through at least one of an insulating patch and an insulating colloid.

[0033] In some embodiments of the present application, the first clamping portion and the first thermal management component are an integral structure; and / or the second clamping portion and the second thermal management component are an integral structure.

[0034] With such a setting, the first clamping portion and the first heat management component can be processed at one time, avoiding secondary processing and reducing the processing procedures. And / or, the second clamping portion and the second heat management component can be processed at one time, avoiding secondary processing and reducing the processing procedures.

[0035] In some embodiments of the present application, the first connecting portion and the side plate are of an integral structure.

[0036] With such a setting, the first connecting portion and the side plate can be processed at one time, avoiding secondary processing and reducing the processing procedures.

[0037] In some embodiments of the present application, along the first direction, the connecting structure is a continuous or discontinuous structure.

[0038] With such a setting, the connecting structure can be designed according to the actual structure, so as to adapt to the actual working conditions.

[0039] In some embodiments of the present application, along the second direction, the connecting structure is located between the planes where the two opposite sides of the first heat management component and the second heat management component are located.

[0040] With such a setting, in the second direction, the connecting structure can be prevented from protruding out of the heat management assembly, which is convenient for actual processing.

[0041] In some embodiments of the present application, the battery device further includes two end plates. Along the first direction, the two end plates are respectively arranged on both sides of the battery cell assembly and above the first heat management component.

[0042] With such a setting, the two end plates can protect both sides of the battery cell assembly in the first direction to ensure the overall reliability of the battery device. Since the end plates are located above the first heat management component, the presence of the end plates will not interfere with the flow channels.

[0043] The second aspect of the present application provides an electrical device, including the battery device in any of the above embodiments, and the battery device is used to provide electrical energy for the electrical device.

[0044] In the technical solution of the embodiments of the present application, since the battery device in any of the above embodiments is included, the same beneficial effects can be achieved. Description of the Drawings

[0045] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation to the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0046] Figure 1An explosion schematic diagram of a battery device provided for some embodiments of the present application;

[0047] Figure 2 A sectional schematic diagram of a battery device provided for some embodiments of the present application;

[0048] Figure 3 Another explosion schematic diagram of a battery device provided for some embodiments of the present application;

[0049] Figure 4 Another explosion schematic diagram of a battery device provided for some embodiments of the present application;

[0050] Figure 5 Another sectional schematic diagram of a battery device provided for some embodiments of the present application;

[0051] Figure 6 For Figure 5 A partial enlarged schematic diagram of part A in

[0052] Figure 7 Another sectional schematic diagram of a battery device provided for some embodiments of the present application;

[0053] Figure 8 For Figure 2 A partial enlarged schematic diagram of part B in

[0054] Figure 9 A sectional schematic diagram of a battery device provided for some embodiments of the present application with an insulator provided;

[0055] Figure 10 Another sectional schematic diagram of a battery device provided for some embodiments of the present application with an insulator provided.

[0056] Explanation of reference numerals

[0057] 01 - Battery device; 1 - Battery cell assembly; 11 - Battery cell; 2 - Thermal management assembly; 21 - First thermal management component; 22 - Second thermal management component; a - Flow channel; a1 - Diversion groove; 3 - Side plate; 4 - Connection structure; 41 - First connection part; 411 - Connection plate; 412 - Clamping plate; 42 - Second connection part; 421 - First clamping part; 422 - Second clamping part; 4221 - First clamping plate; 4222 - Second clamping plate; 4223 - Cross plate; 5 - End plate; 6 - Insulator; X - First direction; Y - Second direction; Z - Third direction. Detailed implementation manners

[0058] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and the above drawings of this application are intended to cover non-exclusive inclusion.

[0060] In the description of the embodiments of this application, technical terms such as "first", "second", "third", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0061] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment at every occurrence in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0062] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0063] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed, operated or used in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of this application.

[0064] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", "linkage", and "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may also be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0065] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, the technical term "contact" shall be understood in a broad sense. It may be direct contact or contact through an intermediate medium layer. It may be contact with substantially no mutual force between the two in contact, or contact with mutual force between the two in contact.

[0066] Next, the present application will be described in detail.

[0067] At present, new energy batteries are increasingly widely used in life and industry. New energy batteries are not only applied to energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0068] Based on this, the present application provides an electrical device, and the electrical device includes a battery device for providing electrical energy. The battery device can provide electrical energy for the electrical device, thereby ensuring the normal operation and functioning of the electrical device.

[0069] In some examples, the electrical device includes various suitable devices such as an aircraft, a mobile phone, a portable device, a laptop computer, a battery car, an electric toy, an electric tool, a vehicle, or a ship.

[0070] Among them, an aircraft generally refers to a device that flies in the atmosphere or in outer space (space), and may include aircraft flying in the atmosphere and spacecraft flying in space. Aircraft may include airplanes, airships, etc. Exemplarily, it may be a low-altitude aircraft, an eVTOL (electric Vertical Take-off and Landing) aircraft, a commuter aircraft, a regional aircraft, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft.

[0071] In the related art, a battery device generally includes a thermal management component, a side plate, and battery cells. The side plate is connected to the thermal management component to form a space for accommodating the battery cells, the battery cells are carried on the thermal management component, and the thermal management component dissipates heat from the battery cells. To ensure the overall reliability of the battery device, the connection relationship between the side plate and the thermal management component is particularly important.

[0072] Based on this, as Figure 1 , Figure 2 shown, the present application provides a battery device 01, which includes battery cells 11, a thermal management component 2, a side plate 3, and a connection structure 4. The battery cell assembly 1 is stacked and arranged in a first direction X. The thermal management component 2 includes a first thermal management part 21 and a second thermal management part 22 that are stacked in a second direction Y. A flow channel a for flowing a thermal management medium is formed between the first thermal management part 21 and the second thermal management part 22. The battery cell assembly 1 is carried on the first thermal management part 21. Along a third direction Z, at least part of the side plate 3 is disposed on both sides of the battery cell assembly 1. There is a connection structure 4 between the side plate 3 and the thermal management component 2. The connection structure 4 includes a first connection part 41. The first connection part 41 is connected to the end of the side plate 3 close to the thermal management component 2 in the second direction Y and is disposed at the end of the thermal management component 2 in the third direction Z. Along the third direction Z, the projection of the first connection part 41 on the thermal management component 2 is at least partially located on the first thermal management part 21 and is respectively connected to the first thermal management part 21 and the second thermal management part 22. Among them, the first direction X, the second direction Y, and the third direction Z intersect pairwise.

[0073] For the convenience of understanding, taking the battery cell 11 in the battery cell assembly 1 as a square shell battery cell as an example, the first direction X, the second direction Y, and the third direction Z are defined based on the length, width, and height of the battery cell 11. The first direction X is defined as the thickness direction of the battery cell 11, the second direction Y is defined as the height direction of the battery cell 11, and the third direction Z is defined as the width direction of the battery cell 11. That is to say, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other pairwise. Of course, it can be understood that the angles at which the first direction X, the second direction Y, and the third direction Z intersect pairwise can also be acute angles, such as 70°, 80°, or 85°, etc.

[0074] In addition, in the third direction Z, the thermal management component 2 has two opposite ends. In the present application, one end is taken as an example for description, but it can be understood that the two ends of the thermal management component 2 in the third direction Z can be respectively connected to the corresponding side plate 3 through a connection structure 4.

[0075] For ease of understanding, by way of example, in the present application, a boundary surface M is defined as the side surface of the first heat management component 21 facing away from the second heat management component 22. Taking the boundary line M as the starting position of the side plate 3 approaching the end of the heat management assembly 2, that is, the starting position of the upper end of the first connecting portion 41. That is to say, the first connecting portion 41 and the side plate 3 are divided into two different parts by the boundary line M.

[0076] By way of example, as Figure 2 shown, taking the boundary between the stacked first heat management component 21 and the second heat management component 22 as the boundary line K, the first connecting portion 41 can be considered as the part between the boundary line M and the boundary line K. However, we can also consider that the first connecting portion 41 further includes a part on the side of the boundary line K away from the boundary line M. That is to say, the first connecting portion 41 is at least located at the end of the first heat management component 21 in the third direction Z, but there may also be another part of the first connecting portion 41 located at the end of the second heat management component 22 in the third direction Z.

[0077] It can be understood that the battery cell assembly 1 being carried on the first heat management component 21 means that the battery cell assembly 1 is carried on the surface of the first heat management component 21 facing away from the second heat management component 22. Both the first heat management component 21 and the second heat management component 22 are made of a heat-conducting material. For example, the heat-conducting material can be aluminum or copper, etc.

[0078] In some examples, the battery cell assembly 1 includes a plurality of battery cells 11 connected in series, parallel or in a hybrid connection. The plurality of battery cells 11 are stacked in sequence along their thickness direction, that is, the first direction X to form the battery cell assembly 1.

[0079] By way of example, the battery cell 11 can be a secondary battery, which means a battery cell 11 that can be activated by charging after discharging to continue to be used.

[0080] By way of example, the battery cell 11 can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0081] In some examples, as Figure 2 , Figure 3 shown, in order to form the flow channel a, a diversion groove a1 is formed on the side surface of the second heat management component 22 facing the first heat management component 21. The first heat management component 21 covers the notch of the diversion groove a1 to close the diversion groove a1, thereby forming the flow channel a. Such a setting can facilitate the formation of the flow channel a.

[0082] Exemplarily, the second heat management component 22 can be stamped through a stamping process to form an integrally multi-folded plate-like structure, so as to form a diversion channel a1, thus eliminating the process of grooving and facilitating processing.

[0083] Exemplarily, the number of the diversion channels a1 can be multiple, and the number of the formed flow channels a is also multiple.

[0084] Among them, the heat management medium can be water, refrigerant, etc.

[0085] Through the above settings, a flow channel a is formed between the first heat management component 21 and the second heat management component 22, and the heat management medium can flow in the flow channel a. Since the battery cell assembly 1 is carried on the first heat management component 21, the flow of the heat management medium can take away the heat on the battery cell assembly 1, thereby realizing the heat dissipation of the battery cell assembly 1. Along the third direction Z, since at least part of the side plates 3 are arranged on both sides of the battery cell assembly 1, the side plates 3 can provide protection for both ends of the battery cell assembly 1 in the third direction Z.

[0086] Since along the third direction Z, the first connecting portion 41 has a projection on the first heat management component 21, it is convenient to connect the first connecting portion 41 to the first heat management component 21 and the second heat management component 22 respectively. Through the setting of the first connecting portion 41, it is convenient to connect the side plates 3 to the first heat management component 21 and the second heat management component 22 respectively, and the connection strength between the side plates 3 and the heat management component 2 can also be ensured, ensuring the reliability of the overall battery device 01.

[0087] In some embodiments, such as Figure 1 、 Figure 2 、 Figure 4 shown, the battery device 01 further includes two end plates 5. Along the first direction X, the two end plates 5 are respectively arranged on both sides of the battery cell assembly 1 and are located above the first heat management component 21.

[0088] In some examples, the number of the flow channels a is multiple. The flow channels a extend along the first direction X, and the multiple flow channels a are arranged at intervals along the third direction Z. With such a setting, a single flow channel a can dissipate heat from multiple battery cells 11 stacked along the first direction X, and multiple flow channels a can dissipate heat from multiple positions of a single battery cell assembly 1 in the third direction Z, thereby fully dissipating heat from the multiple battery cells 11 and improving the heat dissipation efficiency of the battery cells 11.

[0089] With the above settings, the two end plates 5 can protect both sides of the battery cell assembly 1 in the first direction X. Combining the protection of the side plates 3 for the battery cell assembly 1 in the third direction Z, all-round protection of the battery device 01 can be achieved, ensuring the reliability of the battery device 01. Since the end plate 5 is located above the first heat management component 21, the presence of the end plate 5 will not interfere with the flow channel a.

[0090] The structure of the connection structure 4 is diverse, and the connection structure 4 will be introduced in detail below.

[0091] In some embodiments, as Figure 2 shown, the connection structure 4 further includes a second connection portion 42. The second connection portion 42 is disposed at the end of the heat management assembly 2 in the third direction Z, and the second connection portion 42 is at least located between the first connection portion 41 and the heat management assembly 2. Along the third direction Z, the second connection portion 42 has partial projections on both the first heat management component 21 and the second heat management component 22. The second connection portion 42 is respectively connected to the first heat management component 21, the second heat management component 22, and is connected to the first connection portion 41.

[0092] That is to say, the first connection portion 41 is respectively connected to the first heat management component 21 and the second heat management component 22 through the second connection portion 42.

[0093] In addition, it should be explained that along the third direction Z, even if the second connection portion 42 is located between the first connection portion 41 and the end of the heat management assembly 2, it can still be considered that the second connection portion 42 has a projection on the heat management assembly 2 in the third direction Z, and this projection is at least partially located on the first heat management component 21, that is, on the end of the first heat management component 21 arranged in the third direction Z.

[0094] In some examples, along the third direction Z, the portion corresponding to the projection of the first connection portion 41 on the first heat management component 21 can be connected to the first heat management component 21, so as to facilitate the connection between the first connection portion 41 and the first heat management component 21. Similarly, the portion corresponding to the projection of the second connection portion 42 on the second heat management component 22 can be connected to the second heat management component 22. In this way, it can facilitate the connection between the second connection portion 42 and the second heat management component 22.

[0095] With the above settings, along the third direction Z, since the second connection portion 42 has partial projections on both the first heat management component 21 and the second heat management component 22, it can facilitate the connection between the second connection portion 42 and the first heat management component 21 and the second heat management component 22 respectively. Furthermore, it is convenient to use the second connection portion 42 to realize the separate connection between the first connection portion 41 and the first heat management component 21 and the second heat management component 22, thereby ensuring the overall reliability of the battery device 01.

[0096] In some embodiments, the first connecting portion 41 is snap-connected and / or adhesively connected and / or welded and / or threadedly connected to the second connecting portion 42.

[0097] That is to say, the connection between the first connecting portion 41 and the second connecting portion 42 can be a combination of one or more of snap connection, adhesive connection, welding, and threaded connection. It can be specifically selected and set according to needs.

[0098] Among them, when the first connecting portion 41 and the second connecting portion 42 are adhesively connected, it can be adhesively connected through structural adhesive. When the first connecting portion 41 and the second connecting portion 42 are threadedly connected, they can be locked together by fasteners in a threaded manner.

[0099] Through the above settings, the connection between the first connecting portion 41 and the second connecting portion 42 can be realized through a combination of one or more of snap connection, adhesive connection, welding, and threaded connection. In this way, a suitable connection method can be selected according to the actual working conditions, so as to ensure the diversity and reliability of the connection.

[0100] In some embodiments, as Figure 2 , Figure 5 shown, the second connecting portion 42 includes a first clamping portion 421 and a second clamping portion 422. The first clamping portion 421 is connected to the end of the first heat management component 21 in the third direction Z, and the second clamping portion 422 is connected to the end of the second heat management component 22 in the third direction Z. The first clamping portion 421 and the second clamping portion 422 are spaced apart to form a snap connection space, and the first connecting portion 41 is snapped into the snap connection space.

[0101] Among them, exemplarily, on the basis that the first connecting portion 41 is snapped between the first clamping portion 421 and the second clamping portion 422, the first connecting portion 41 can also be connected to the first clamping portion 421 and the second clamping portion 422 respectively by welding, adhesive connection or threaded connection. In this way, the connection strength between the first connecting portion 41 and the second connecting portion 42 can be improved, and the battery device 01 can be adapted to the hoisting scenario. That is to say, even if the whole battery device 01 is lifted, the first connecting portion 41 and the second connecting portion 42 can still ensure a stable connection relationship.

[0102] Through the above settings, the second connecting portion 42 is set in the structural form of the first clamping portion 421 and the second clamping portion 422, and a snap connection space is formed between the first clamping portion 421 and the second clamping portion 422. By snapping the first connecting portion 41 into the snap connection space, the snap connection between the first connecting portion 41 and the second connecting portion 42 is realized. The simple snap connection method can realize the detachable connection between the first connecting portion 41 and the second connecting portion 42, so it is more convenient. In addition, the snap connection method can facilitate the pre-positioning of the first connecting portion 41 and the second connecting portion 42, and is more convenient for connection.

[0103] For ease of understanding, two specific ways of engaging the engaging space with the first connecting portion 41 are listed below. Of course, it can be understood that the engaging ways in the present application are not limited thereto.

[0104] In the first embodiment, if Figure 6 As shown, the second clamping portion 422 includes a first clamping plate 4221 and a second clamping plate 4222 connected to each other. Along the second direction Y, the first clamping plate 4221 is located on the side of the first clamping portion 421 away from the battery cell assembly 1. Along the third direction Z, the first clamping plate 4221 is located between the second clamping plate 4222 and the second thermal management component 22, and is spaced apart from the second clamping plate 4222 and is connected to the second thermal management component 22. The first clamping portion 421 and the second clamping plate 4222 are spaced apart to form a clamping space, and the first connecting portion 41 is located on the side of the first clamping portion 421 away from the first thermal management component 21, and abuts between the first clamping plate 4221 and the second clamping plate 4222.

[0105] In this case, in order to facilitate understanding of the positional relationship between the first clamping portion 421 and the first thermal management component 21, and the positional relationship between the second clamping portion 422 and the second thermal management component 22, the side surface of the first clamping plate 4221 facing away from the second clamping plate 4222 is used as the dividing line N1, and the first thermal management component 21 and the first clamping portion 421 are divided by the dividing line N1, and the second thermal management component 22 and the second clamping portion 422 are divided by the dividing line N1 at the same time.

[0106] It can be understood that in this case, the clamping space has an upward opening. In addition, the first connecting portion 41 extends from one end of the side plate 3 close to the thermal management component 2 to below the dividing line K, thereby extending between the first clamping plate 4221 and the second clamping plate 4222, and abutting between the first clamping plate 4221 and the second clamping plate 4222.

[0107] The upper end surface of the second clamping plate 4222 may be flush with the dividing line K, or the upper end surface of the second clamping plate 4222 may be higher or lower than the dividing line K.

[0108] In addition, the upper end surface of the first clamping plate 4221 may extend to the dividing line K, or the upper end surface of the first clamping plate 4221 may also be lower than the dividing line K.

[0109] In some examples, the second clamping portion 422 also includes a transverse plate 4223, which is disposed between the first clamping plate 4221 and the second clamping plate 4222 and is respectively connected to the first clamping plate 4221 and the second clamping plate 4222. The end of the first connecting portion 41 that is away from the side plate 3 abuts against the transverse plate 4223. By setting the transverse plate 4223, not only the setting stability of the first connecting portion 41 can be improved, but also the connection between the first clamping plate 4221 and the second clamping plate 4222 can be facilitated.

[0110] Through the above-mentioned arrangement, the first clamping portion 421 and the second clamping plate 4222 are utilized to form a clamping space with an opening facing upward, so that the first connecting portion 41 is clamped into the clamping space, and the first clamping portion 421 and the second clamping plate 4222 are utilized to provide a clamping force for the first connecting portion 41. Moreover, since the first connecting portion 41 abuts between the first clamping plate 4221 and the second clamping plate 4222, the first clamping plate 4221 and the second clamping plate 4222 can also provide a clamping force for the first connecting portion 41, thereby further improving the connection stability between the first connecting portion 41 and the second connecting portion 42, and ensuring the overall reliability of the battery device 01.

[0111] In some embodiments, Figure 6 As shown, along the arrangement direction of the first clamping plate 4221 and the second clamping plate 4222 , the size of the second clamping plate 4222 is equal to one quarter to one half of the size of the side plate 3 .

[0112] That is, along the third direction Z, the size of the second clamping plate 4222 is equal to one quarter to one half of the size of the side plate 3. Figure 6 As shown, along the third direction Z, the size of the second clamping plate 4222 is L1, the size of the side plate 3 is L2, 1 / 4L2≤L1≤1 / 2L2. That is, the size of L1 cannot be too large, so as to avoid the second clamping plate 4222 interfering with other components around the side plate 3.

[0113] For example, L1 may be equal to 1 / 4 L2, 1 / 3 L2, 3 / 8 L2 or 1 / 2 L2, etc. The specific selection may be made according to actual working conditions.

[0114] Exemplarily, L1=1 / 4L2, so that the size of the second splint 4222 in the third direction Z can be guaranteed to a greater extent on the basis of ensuring the structural strength of the second splint 4222, thereby achieving more adequate avoidance.

[0115] Exemplarily, L1=1 / 2L2, so that in the third direction Z, the second clamping plate 4222 can make a concession, thereby ensuring the structural strength of the second clamping plate 4222 to a greater extent, thereby ensuring the durability of the clamping.

[0116] With the above settings, along the arrangement direction of the first clamping plate 4221 and the second clamping plate 4222, the dimension of the second clamping plate 4222 protruding from the outer surface of the side plate 3 can be controlled within a certain range, thereby avoiding interference of the setting of the second clamping plate 4222 with other components outside the side plate 3 and facilitating the setting of other adjacent components.

[0117] In some embodiments, as Figure 7 shown, along the third direction Z, the surface of the side plate 3 facing away from the battery cell assembly 1 is flush with the surface of the second clamping plate 4222 facing away from the first clamping plate 4221.

[0118] Of course, in some examples, relative to the solution as Figure 7 shown, it is also possible to thin the thickness of the side plate 3 from the side close to the battery cell assembly 1 to increase the space for accommodating the battery cell 11.

[0119] Through the above settings, it can be ensured that the outer surface of the side plate 3 is flush with the outer surface of the second clamping plate 4222, thereby avoiding the outer surface of the second clamping plate 4222 and the outer surface of the side plate 3 protruding relatively, so that the overall outer surface of the side plate 3 and the second clamping plate 4222 is flat, facilitating the setting of other components adjacent to the side plate 3 and the second clamping plate 4222.

[0120] In the second embodiment, as Figure 8 shown, along the second direction Y, the first connecting portion 41 includes a connected connecting plate 411 and a clamping plate 412. The connecting plate 411 is located between the side plate 3 and the clamping plate 412, and the connecting plate 411 is located on the side of the first clamping portion 421 facing away from the first heat management component 21. Along the second direction Y, the second clamping portion 422 is located on the side of the first clamping portion 421 facing away from the battery cell assembly 1 and is spaced from the first clamping portion 421 to form a clamping space. The clamping plate 412 is snapped into the clamping space.

[0121] In some examples, the connecting plate 411 is connected to the first clamping portion 421 (for example, it can be bonded, welded, etc.), so as to further ensure the reliability of the connection between the overall first connecting portion 41 and the overall second connecting portion 42.

[0122] In this case, in order to facilitate understanding of the positional relationship between the first clamping portion 421 and the first heat management component 21, and the positional relationship between the second clamping portion 422 and the second heat management component 22, along the third direction Z, with the surface of the side of the clamping plate 412 facing away from the connecting plate 411 as the dividing line N2, the first clamping portion 421 and the first heat management component 21 are divided by the dividing line N2, and the second clamping portion 422 and the second heat management component 22 are divided by the dividing line N2.

[0123] In some examples, after the clamping plate 412 is clamped into the clamping space, the clamping plate 412 is connected to the first clamping portion 421 and the second clamping portion 422 (for example, by bonding, welding, etc.), so as to further ensure the connection stability between the clamping plate 412 and the first clamping portion 421 and the second clamping portion 422.

[0124] In some examples, the side panel 3, the connecting plate 411 and the snap-in plate 412 are overall in an "L" shape, and the snap-in plate 412 is connected to the side panel 3 through the connection between the connecting plate 411, the snap-in plate 412 and the side panel 3, and the side panel 3 is connected to the first thermal management component 21 and the second thermal management component 22 respectively through the snap-in connection between the snap-in plate 412 and the snap-in space.

[0125] Through the above-mentioned arrangement, along the second direction Y, the snap-in space is formed depending on the spacing arrangement of the first clamping portion 421 and the second clamping portion 422. Since the snap-in plate 412 is snapped in the snap-in space, the snap-in plate 412 belonging to the first connection portion 41 establishes a connection relationship with the first thermal management component 21 and the second thermal management component 22 through the first clamping portion 421 and the second clamping portion 422, respectively, thereby realizing the first connection portion 41 and the first thermal management component 21 and the second thermal management component 22 are connected respectively.

[0126] In some embodiments, Figure 8 As shown, along the second direction Y, the second clamping portion 422 is at least partially located on the side of the first clamping portion 421 away from the battery cell assembly 1, the third direction Z is the width direction of the battery cell assembly 1, and along the third direction Z, the distance between the surface of the second clamping portion 422 close to the end of the second thermal management component 22 and the center point of the side plate 3 is less than or equal to one quarter of the width of the battery cell assembly 1.

[0127] It can be understood that the width direction of the battery cell assembly 1 is the width direction of the battery cell 11 .

[0128] In order to facilitate understanding, Figure 8 As shown, in the third direction Z, it is shown that the center point of the side plate 3 is located on the center line J. And it is defined that along the third direction Z, the distance between the surface of the second clamping portion 422 close to the second thermal management component 22 and the center point of the side plate 3 is L3, and the width of the battery cell 11 is W, that is, L3≤1 / 4W. In this way, in the third direction Z, the second clamping portion 422 cannot be too much recessed in the second thermal management component 22 relative to the first thermal management component 21, that is, the second clamping portion 422 cannot occupy too much space under the first thermal management component 21, so as to ensure that a flow channel a with sufficient volume can be formed between the second thermal management component 22 and the first thermal management component 21, so as to ensure the normal heat dissipation of the battery cell 11. It can be understood that 0<L3.

[0129] Exemplarily, L3 can be equal to 1 / 4W, 1 / 5W, 1 / 6W, 1 / 7W or 1 / 8W, and can be specifically selected and set according to needs.

[0130] It can be understood that as Figure 6 shown, when the second clamping portion 422 includes a first clamping plate 4221 and a second clamping plate 4222, L3 refers to the distance between the surface of the first clamping plate 4221 close to the second heat management component 22 and the center line J.

[0131] Through the above settings, along the third direction Z, it is possible to avoid the part of the second clamping portion 422 recessed relative to the first heat management component 21 in the second heat management component 22 from having too large a size, and avoid the second clamping portion 422 occupying too much space on the side of the first clamping portion 421 away from the battery cell assembly 1, so as to ensure that the size of the flow channel a formed between the first heat management component 21 and the second heat management component 22 is sufficient, thereby ensuring the heat dissipation efficiency and effect of the heat management assembly 2 on the battery cell assembly 1.

[0132] In some embodiments, as Figure 8 shown, the second clamping portion 422 constitutes a part of the wall of the flow channel a.

[0133] In some examples, as Figure 8 shown, when the first connecting portion 41 includes a connecting plate 411 and a clamping plate 412, the clamping space is a hole communicating the inside and outside of the flow channel a. Thus, after the clamping plate 412 is clamped into the clamping space, the clamping plate 412 also needs to act as a sealing function to seal the flow channel a.

[0134] In some other examples, as Figure 6 shown, when the second clamping portion 422 includes a first clamping plate 4221 and a second clamping plate 4222, since the first clamping plate 4221 is located between the second clamping plate 4222 and the second heat management component 22, the first clamping plate 4221 can be made to act as a part of the wall of the flow channel a, so as to facilitate the actual layout setting and improve the integration degree.

[0135] Through the above settings, the second clamping portion 422 not only acts as the wall of the flow channel a, but can also be used to cooperate with the first clamping portion 421 to clamp the first connecting portion 41, so as to satisfy the connection of the first connecting portion 41 with the first heat management component 21 and the second heat management component 22 respectively. With such a setting, it is not only convenient for the first connecting portion 41 to be respectively connected to the first heat management component 21 and the second heat management component 22 to ensure the connection strength, but also improves the overall integration degree of the battery device 01.

[0136] In some embodiments, the first clamping portion 421 and the first heat management component 21 are of an integral structure.

[0137] In some examples, in the third direction Z, the first clamping portion 421 is an extended part of the first heat management component 21. In this way, not only can the reliability of the overall structure of the first clamping portion 421 and the first heat management component 21 be ensured, but also the second clamping portion 422 can be used to carry the battery cell 11. In this way, the material used for the first heat management component 21 can be reduced, and at the same time, the space for accommodating the battery cell assembly 1 can be expanded.

[0138] Through the above settings, the first clamping portion 421 and the first heat management component 21 can be processed in one go, avoiding secondary processing and the corresponding connection processes, reducing the processing procedures. At the same time, the structural strength of the overall structure of the first clamping portion 421 and the first heat management component 21 can be ensured, guaranteeing the reliability of the connection.

[0139] In some other embodiments, the second clamping portion 422 and the second heat management component 22 are of an integral structure.

[0140] In some examples, when the second clamping portion 422 includes the first clamping plate 4221, the second clamping plate 4222, and the cross plate 4223, the corresponding structure can be formed in one go by stamping.

[0141] In this way, the second clamping portion 422 and the second heat management component 22 can be processed in one go, avoiding secondary processing and the corresponding connection processes, reducing the processing procedures. At the same time, the structural strength of the overall structure of the second clamping portion 422 and the second heat management component 22 can be ensured, guaranteeing the reliability of the connection.

[0142] In some other embodiments, the first clamping portion 421 and the first heat management component 21 are of an integral structure, and the second clamping portion 422 and the second heat management component 22 are of an integral structure.

[0143] In this way, the first clamping portion 421 and the first heat management component 21 can be processed in one go, and at the same time, the second clamping portion 422 and the second heat management component 22 can be processed in one go, avoiding secondary processing and subsequent connection processes, reducing the processing procedures. At the same time, the structural strength of the overall structure of the first clamping portion 421 and the first heat management component 21 can be ensured, and the structural strength of the overall structure of the second clamping portion 422 and the second heat management component 22 can be ensured.

[0144] In some embodiments, the first connecting portion 41 and the side plate 3 are of an integral structure. In this way, the first connecting portion 41 and the side plate 3 can be processed in one go, avoiding secondary processing and reducing the processing procedures. In addition, such a setting can also ensure the reliability of the overall structure of the first connecting portion 41 and the side plate 3.

[0145] In some embodiments, along the first direction X, the connecting structure 4 is a continuous or discontinuous structure.

[0146] When the connection structure 4 includes a first connection portion 41, in some examples, the first connection portion 41 is a continuously extending plate-like structure along the first direction X, so that in the first direction X, the first connection portion 41 can be connected to the first thermal management component 21 and the second thermal management component 22 at any location, thereby ensuring the stability of the connection.

[0147] In other examples, along the first direction X, the first connection portion 41 includes a plurality of spaced apart plate segments, which not only ensures the respective connections between the first connection portion 41 and the first thermal management component 21 and the second thermal management component 22 , but also allows for avoidance according to actual connection conditions.

[0148] In the case where the connection structure 4 includes a first connection portion 41 and a second connection portion 42, in some examples, along the first direction X, the portion of the first connection portion 41 extending into the snap-fitting space is a continuously extending structure, and correspondingly, the snap-fitting space is also a continuously extending structure, thereby increasing the snap-fitting area of ​​the first connection portion 41 and the second connection portion 42 and ensuring the stability of the snap-fitting.

[0149] In other examples, along the first direction X, the portion of the first connecting portion 41 extending into the snap-fitting space includes a plurality of discontinuous sub-portions. Correspondingly, the snap-fitting space includes a plurality of discontinuous sub-spaces, and each of the plurality of sub-portions corresponds to the other sub-portions one by one, and the sub-portions extend into the corresponding sub-spaces, thereby achieving snap-fitting of the first connecting portion 41 and the second connecting portion 42. In this way, stable snap-fitting of the first connecting portion 41 and the second connecting portion 42 can also be achieved.

[0150] Through the above arrangement, along the first direction X, the connection structure 4 can be a continuous or discontinuous structure, so that a suitable connection structure 4 can be arranged according to actual working conditions to adapt to actual working conditions, thereby improving the versatility of the connection structure 4.

[0151] In some embodiments, Figure 9 , Figure 10 As shown, along the second direction Y, the connection structure 4 is located between the planes where the two opposite side surfaces of the first heat management component 21 and the second heat management component 22 are located.

[0152] That is, along the second direction Y, the connection structure 4 is located within the range where the first heat management component 21 and the second heat management component 22 are located.

[0153] In which, along the second direction Y, the distance between the planes where the two opposite side surfaces of the first heat management component 21 and the second heat management component 22 are located may be equal to or greater than the size of the connection structure 4 .

[0154] In this way, along the second direction Y, the connecting structure 4 does not protrude from the surface of the heat management component 2, which can avoid the connecting structure 4 affecting the setting of the side plate 3 and the setting of the battery cell assembly 1 carried on the first heat management component 21, and is convenient for the actual processing and spatial layout of the battery device 01.

[0155] In some embodiments, the first connecting portion 41 and the second connecting portion 42 are insulated. In this way, the side plate 3 and the heat management component 2 can be electrically separated to avoid the leakage of the battery cell 11 through the connecting structure 4 and the side plate 3, thereby improving the overall reliability of the battery device 01.

[0156] The following introduces the insulation methods of the first connecting portion 41 and the second connecting portion 42.

[0157] In some embodiments, as Figure 9 , Figure 10 shown, the battery device 01 further includes an insulator 6. An insulator 6 is provided between the first clamping portion 421 and the first connecting portion 41, and the insulator 6 separates the first clamping portion 421 and the first connecting portion 41. An insulator 6 is provided between the second clamping portion 422 and the first connecting portion 41, and the insulator 6 separates the second clamping portion 422 and the first connecting portion 41.

[0158] In some examples, as Figure 9 shown, when the first connecting portion 41 includes a connecting plate 411 and a clamping plate 412, setting an insulator 6 between the second clamping portion 422 and the first connecting portion 41 means setting an insulator 6 between the connecting plate 411 and the first clamping portion 421, and setting an insulator 6 between the clamping plate 412 and the first clamping portion 421 and the second clamping portion 422.

[0159] In other examples, as Figure 10 shown, when the second clamping portion 422 includes a first clamping plate 4221, a second clamping plate 4222 and a transverse plate 4223, setting an insulator 6 between the second clamping portion 422 and the first connecting portion 41 means setting an insulator 6 between the first clamping plate 4221 and the first connecting portion 41, setting an insulator 6 between the second clamping plate 4222 and the first connecting portion 41, and setting an insulator 6 between the transverse plate 4223 and the first connecting portion 41 to insulate the first connecting portion 41 and the second clamping portion 422 in all directions.

[0160] Through the above settings, insulators 6 can be provided between the first clamping portion 421 and the first connecting portion 41, and between the second clamping portion 422 and the first connecting portion 41, so as to achieve insulation between the first connecting portion 41 and the second connecting portion 42, and further achieve insulation between the side plate 3 and the thermal management component 2, avoid conduction between the side plate 3 and the thermal management component 2, realize potential separation therebetween, and improve the overall reliability of the battery device 01.

[0161] In some other embodiments, the first connecting portion 41 is made of an insulating material.

[0162] Among them, the insulating material used for the first connecting portion 41 can be plastic or insulating fiber products. Such insulating materials can not only achieve insulation, but also ensure the structural strength of the first connecting portion 41 itself.

[0163] In some examples, the side plate 3 and the first connecting portion 41 are of an integrally formed structure. In this way, the materials of the side plate 3 and the first connecting portion 41 can be set to the same material. For example, both the first connecting portion 41 and the side plate 3 are made of plastic material, which is convenient for the processing of the side plate 3 and the first connecting portion 41.

[0164] In this way, the first connecting portion 41 with insulating properties can be made of an insulating material, so that the first connecting portion 41 is insulated by itself. After the first connecting portion 41 and the second connecting portion 42 are connected, the first connecting portion 41 and the second connecting portion 42 will not conduct electricity with each other, thereby realizing potential separation between the side plate 3 and the thermal management component 2 and improving the overall reliability of the battery device 01.

[0165] In some embodiments, the insulator 6 includes at least one of an insulating patch and an insulating colloid.

[0166] In some examples, the material of the insulating patch can include nylon, mica, quartz, plastic, aramid paper or silicone rubber, etc., which can be specifically selected according to needs.

[0167] In some examples, the types of insulating colloids can include thermoplastic adhesives or thermosetting adhesives, etc.

[0168] Through the above settings, insulation can be achieved through at least one of an insulating patch and an insulating colloid, so as to prevent the electric energy of the battery cell assembly 1 from leaking to the first clamping portion 421 and the second clamping portion 422 through the thermal management component 2, and further leaking to the side plate 3, so that potential separation between the side plate 3 and the thermal management component 2 is realized, and the overall reliability of the battery device 01 is ensured.

[0169] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: The battery monomer components are stacked and arranged along a first direction; A thermal management component, comprising a first thermal management component and a second thermal management component stacked along a second direction, a flow channel for circulating a thermal management medium is formed between the first thermal management component and the second thermal management component, and the battery cell assembly is carried by the first thermal management component; Side plates, along the third direction, at least part of the side plates are arranged on both sides of the battery monomer assembly; A connection structure, wherein the side plate and the thermal management component have the connection structure, wherein the connection structure comprises a first connection portion, wherein the first connection portion is connected to an end portion of the side plate close to the thermal management component in the second direction, and is disposed at an end portion of the thermal management component in the third direction, wherein along the third direction, a projection of the first connection portion on the thermal management component is at least partially located on the first thermal management component, and is connected to the first thermal management component and the second thermal management component, respectively; The first direction, the second direction and the third direction intersect each other.

2. The battery device according to claim 1, characterized in that: The connection structure also includes a second connection portion, which is arranged at the end of the thermal management component in the third direction, and the second connection portion is at least located between the first connection portion and the thermal management component, and along the third direction, the second connection portion has a partial projection on the first thermal management component and the second thermal management component, and the second connection portion is respectively connected to the first thermal management component and the second thermal management component, and is connected to the first connection portion.

3. The battery device according to claim 2, characterized in that: The first connection portion and the second connection portion are clamped and / or bonded and / or welded and / or threadedly connected.

4. The battery device according to claim 3, characterized in that: The second connecting portion includes a first clamping portion and a second clamping portion, the first clamping portion is connected to the end of the first thermal management component in the third direction, and the second clamping portion is connected to the end of the second thermal management component in the third direction; the first clamping portion and the second clamping portion are spaced apart to form a snap-in space, and the first connecting portion is snapped into the snap-in space.

5. The battery device according to claim 4, characterized in that: The second clamping portion includes a first clamping plate and a second clamping plate connected to each other. Along the second direction, the first clamping plate is located on the side of the first clamping portion away from the battery cell assembly. Along the third direction, the first clamping plate is located between the second clamping plate and the second thermal management component, and is spaced apart from the second clamping plate and connected to the second thermal management component. The first clamping portion and the second clamping plate are spaced apart to form the clamping space. The first connecting portion is located on the side of the first clamping portion away from the first thermal management component, and abuts between the first clamping plate and the second clamping plate.

6. The battery device according to claim 5, characterized in that: Along the third direction, a surface of the side plate facing away from the battery cell assembly is flush with a surface of the second clamping plate facing away from the first clamping plate.

7. The battery device according to claim 5, characterized in that: Along the arrangement direction of the first clamping plate and the second clamping plate, the size of the second clamping plate is equal to one quarter to one half of the size of the side plate.

8. The battery device according to claim 4, characterized in that: Along the second direction, the first connecting portion includes a connected connecting plate and a clamping plate, the connecting plate is located between the side plate and the clamping plate, and the connecting plate is located on a side of the first clamping portion away from the first thermal management component; Along the second direction, the second clamping portion is located at a side of the first clamping portion away from the battery cell assembly and is spaced apart from the first clamping portion to form the clamping space, and the clamping plate is clamped into the clamping space.

9. The battery device according to any one of claims 4 to 8, characterized in that: Along the second direction, the second clamping portion is at least partially located on the side of the first clamping portion that is away from the battery cell assembly, the third direction is the width direction of the battery cell assembly, and along the third direction, the distance between the surface of the second clamping portion close to the end of the second thermal management component and the center point of the side plate is less than or equal to one quarter of the width of the battery cell assembly.

10. The battery device according to any one of claims 4 to 8, characterized in that: The second clamping portion constitutes a partial wall of the flow channel.

11. The battery device according to any one of claims 4 to 8, characterized in that: The first connection portion is insulated from the second connection portion.

12. The battery device according to claim 11, characterized in that: The battery device further includes an insulator, the insulator is disposed between the first clamping portion and the first connecting portion, the insulator separates the first clamping portion and the first connecting portion, the insulator is disposed between the second clamping portion and the first connecting portion, the insulator separates the second clamping portion and the first connecting portion; or, The first connecting portion is made of insulating material.

13. The battery device according to claim 12, characterized in that: The insulator includes at least one of an insulating patch and an insulating colloid.

14. The battery device according to any one of claims 4 to 8, characterized in that: The first clamping portion and the first thermal management component are an integral structure; and / or the second clamping portion and the second thermal management component are an integral structure.

15. The battery device according to claim 1, characterized in that: The first connecting portion and the side plate are an integral structure.

16. The battery device according to claim 1, characterized in that: Along the first direction, the connection structure is a continuous or discontinuous structure.

17. The battery device according to claim 1, characterized in that: Along the second direction, the connection structure is located between planes where two opposite side surfaces of the first heat management component and the second heat management component are located.

18. The battery device according to claim 1, characterized in that The battery device further includes two end plates. Along the first direction, the two end plates are respectively arranged on both sides of the battery cell assembly and are located above the first thermal management component.

19. An electrical equipment, characterized in that: The battery device comprises the battery device described in any one of claims 1 to 18, wherein the battery device is used to provide electrical energy to the electrical equipment.

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