Battery devices and vehicles

Abstract

This application discloses a battery device and a vehicle. The battery device includes: a housing, a cold plate, a fixing assembly, and a cold head. The housing is used to house individual battery cells. At least a portion of the cold plate is disposed within the housing, and a connector of the cold plate extends beyond the edge of the housing. The fixing assembly is connected to the edge, and the connector is connected to the fixing assembly. The cold head is connected to the fixing assembly and communicates with the connector. Thus, by providing a fixing assembly and extending the connector to the outside of the edge, the cold head and the connector are fixed and communicated via the fixing assembly located outside the edge. This eliminates the need for the connector and cold head to be connected and fixed on the edge, avoiding the edge affecting the sealing connection between the cold plate and the connector. This improves the sealing performance of the battery device, reduces the risk of cooling medium leakage, and enhances the safety and reliability of the battery device.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a battery device and a vehicle. Background Technology

[0002] In related technologies, battery devices generate a large amount of heat during charging and discharging, requiring a cooling system to regulate the temperature of the battery device.

[0003] For battery cooling solutions using direct cooling, the pressure of the cooling medium flowing inside the cold plate is relatively high, and it needs to be connected to an external cooling medium supply device through a cold head. This places high demands on the sealing between the cold head and the cold plate, and existing connection methods are unable to meet these sealing requirements. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a battery device that makes the connection between the cold head and the cold plate easier and provides a better sealing effect.

[0005] This application further proposes a vehicle employing the aforementioned battery device.

[0006] In a first aspect, this application proposes a battery device, comprising: a housing, a cold plate, a fixing component, and a cold head, wherein the housing is used to house a single battery cell; at least a portion of the cold plate is disposed within the housing, and a connector of the cold plate extends beyond the edge of the housing; the fixing component is connected to the edge, and the connector is connected to the fixing component; the cold head is connected to the fixing component and communicates with the connector.

[0007] According to the battery device of the present application embodiment, by setting a fixing component and extending the connector to the outside of the frame, the cold head and the connector are fixed and connected by the fixing component located on the outside of the frame, so that the connection and fixing of the connector and the cold head do not need to be achieved on the frame, thus avoiding the frame from affecting the sealing connection between the cold plate and the connector, thereby improving the sealing performance of the battery device, reducing the risk of cooling medium leakage, and improving the safety and reliability of the battery device.

[0008] According to some embodiments of this application, the connector includes: a protruding plate and a mounting block connected to the protruding plate, the protruding plate being stacked below the fixing component and the fixing component, and at least a portion of the mounting block being exposed above the fixing component and used for communication with the cold head.

[0009] According to some embodiments of this application, the mounting block includes: a first block and a second block, wherein in the height direction, the projected outline of the first block is larger than the projected outline of the second block, and the first block abuts against the fixing component, and the upper surface of the second block is flush with the upper surface of the fixing component.

[0010] According to some embodiments of this application, the fixing component includes a lower fixing flange and an upper fixing flange, both of which are connected to the frame, and a receiving cavity is defined between the upper fixing flange and the lower fixing flange, with at least a portion of the joint located within the receiving cavity.

[0011] According to some embodiments of this application, the lower fixed flange includes: a connecting flange and a first plate, the connecting flange being connected to the frame, the first plate being located on the side of the connecting flange away from the frame, and the first plate participating in defining the receiving cavity.

[0012] According to some embodiments of this application, a clearance portion is provided on the first plate body, which is used to avoid the mounting block of the joint portion.

[0013] According to some embodiments of this application, the upper fixed flange includes: a side plate and a second plate body, the side plate being connected to the lower fixed flange, the second plate body being opposite to the first plate body, and the first plate body, the side plate, and the second plate body defining an accommodating cavity.

[0014] According to some embodiments of this application, the second plate includes: a first plate segment, an inclined plate segment, and a second plate segment. The second plate segment is higher than the first plate segment, and the inclined plate segment is connected to the first plate segment and the second plate segment. The first plate segment is used to limit the joint portion, and the second plate segment is used to fix the cold head.

[0015] According to some embodiments of this application, a connecting ear is provided on the periphery of the cold head, the tube end of the cold head is inserted into the connector and is sealed and connected to the connector, and the connecting ear is connected to the fixing component.

[0016] Secondly, this application provides a vehicle including the battery device described in the above embodiments.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a partial schematic diagram of a battery device according to an embodiment of this application;

[0020] Figure 2 This is a partially exploded schematic diagram of a battery device according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the upper fixed flange according to an embodiment of this application;

[0022] Figure 4 This is another schematic diagram of the upper fixed flange according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of a lower fixed flange according to an embodiment of this application;

[0024] Figure 6 This is another schematic diagram of the lower fixed flange according to an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of an installation block according to an embodiment of this application;

[0026] Figure 8 This is another schematic diagram of the mounting block according to an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of a cold head according to an embodiment of this application;

[0028] Figure 10 This is another schematic diagram of a cold head according to an embodiment of this application.

[0029] Figure label:

[0030] Battery device 100,

[0031] Box body 10, frame 11,

[0032] Cold plate 20, joint 21, protruding plate 211, mounting block 212, first block 2121, second block 2122.

[0033] Fixed assembly 30, upper fixed flange 31, side plate 311, second plate body 312, first plate segment 3121, inclined plate segment 3122, second plate segment 3123, lower fixed flange 32, connecting flange 321, first plate body 322, clearance part 3221.

[0034] Cold head 40, connecting lug 41, tube end 42. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0037] In this application, the reference to "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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0043] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0044] In this application, "multiple" means two or more (including two).

[0045] In related technologies, the battery device (i.e., battery pack) has at least one battery cell or at least one battery module inside its casing to power electrical equipment (such as a vehicle).

[0046] During the charging and discharging process of a battery device, a large amount of heat is generated. Therefore, a cooling structure, such as an air-cooled structure, a liquid-cooled structure, or a direct-cooled structure, needs to be installed inside the casing.

[0047] For liquid-cooled and direct-cooled structures, corresponding cold plates are required, such as liquid-cooled plates and direct-cooled plates. Both liquid-cooled plates and direct-cooled plates need to be connected to the external cooling medium supply equipment. However, the liquid-cooled plates or direct-cooled plates are installed inside the enclosure and are connected to the external cooling medium supply equipment through the frame of the enclosure. In other words, the cold head (such as a direct cold head or a liquid cold head) is fixed to the frame with bolts and other fasteners, which makes it difficult to guarantee the sealing performance between the cold head and the cold plate.

[0048] It should be noted that for direct cooling structures, a high-pressure cooling medium flows between the direct cooling head and the direct cooling plate, requiring higher sealing performance. As a transition structure, the frame needs to both connect with the direct cooling plate and fix the direct cooling head, which has a significant impact on the sealing performance between the direct cooling head and the direct cooling plate, making it difficult to meet the usage requirements.

[0049] Based on this, this application proposes a battery device in which at least a portion of the cold plate extends out of the housing, and a fixing component is located outside the housing. While the fixing component is used to fix the cold head, the joint portion of the cold plate extending out of the housing can be connected to the fixing component and the cold head, so that the connection between the cold head and the cold plate does not require the aid of a frame structure, thereby avoiding the difficulty in achieving a stable and reliable seal between the frame and the cold head, thus improving the sealing reliability between the cold plate and the cold head, and further improving the stability and safety of the battery device.

[0050] The following is for reference. Figures 1-10 This invention describes a battery device 100 and a vehicle according to an embodiment of the present invention.

[0051] like Figure 1 and Figure 2 As shown, this application proposes a battery device 100, including: a housing 10, a cold plate 20, a fixing component 30, and a cold head 40. The housing 10 is used to accommodate a single battery cell. At least a portion of the cold plate 20 is disposed inside the housing 10, and the connector 21 of the cold plate 20 extends out of the frame 11 of the housing 10. The fixing component 30 is connected to the frame 11, and the connector 21 is connected to the fixing component 30. The cold head 40 is connected to the fixing component 30 and communicates with the connector 21.

[0052] Specifically, the housing 10 includes at least a base plate and a frame 11, with a receiving space defined between the base plate and the frame 11. The battery cells and electrical components are disposed within the receiving space. The cold plate 20 may include a plate body and a connector 21. The plate body is disposed within the housing 10 and is opposite to at least one side surface of the battery cell to achieve temperature regulation of the battery cell.

[0053] Furthermore, the connector 21 extends out of the frame 11 of the housing 10, the fixing component 30 is fixed on the frame 11, and the connector 21 is connected to the fixing component 30. The cold head 40 is connected to the fixing component 30 and communicates with the connector 21, so that the connector 21 and the connector are fixed on the outside of the frame 11 through the fixing component 30.

[0054] It should be noted that the cold plate 20 can be a straight cold plate 20 or a liquid cold plate 20, and the cold head 40 can be a liquid cold head 40 or a straight cold head 40.

[0055] According to the embodiments of this application, the battery device 100 is provided with a fixing component 30 and the connector 21 extends to the outside of the frame 11. The fixing component 30 located on the outside of the frame 11 is used to fix and connect the cold head 40 and the connector 21, thereby eliminating the need to connect and fix the connector 21 and the cold head 40 on the frame 11. This avoids the frame 11 affecting the sealing connection between the cold plate 20 and the connector 21, thereby improving the sealing performance of the battery device 100, reducing the risk of cooling medium leakage, and improving the safety and reliability of the battery device 100.

[0056] It is understood that the battery device 100 in this application embodiment preferably adopts a direct cooling structure, and the joint 21 of the cold head 40 and the cold plate 20 can be connected to the outside of the frame 11 and fixed by the fixing component 30. This simplifies the assembly difficulty, improves the assembly efficiency, and eliminates the need to connect and fix the cold head 40 and the cold plate 20 on the frame 11. This improves the sealing performance, effectively reduces the risk of leakage of high-pressure cooling medium, and improves the cooling efficiency and cooling reliability of the battery device 100, while also improving the safety and reliability of the battery device 100.

[0057] Combination Figure 1 and Figure 7 , Figure 8 As shown, according to some embodiments of this application, the connector 21 includes a protruding plate 211 and a mounting block 212 connected to the protruding plate 211. The protruding plate 211 is stacked below the fixing component 30 and the fixing component 30. At least a portion of the mounting block 212 is exposed above the fixing component 30 and is used to communicate with the cold head 40.

[0058] Specifically, the projected outline of the plate body in the thickness direction is rectangular, and a joint 21 is provided on one side of the width edge or one side of the length edge of the plate body. The projected outline of the protruding plate 211 of the joint 21 in the thickness direction is also rectangular. In the thickness direction, the projected outline of the protruding plate 211 is located outside the projected outline of the frame 11 of the box 10. The mounting block 212 is mounted on the protruding plate 211, and an inlet flow channel and an outlet flow channel can be formed in the mounting block 212. An inlet hole and an outlet hole are formed on the protruding plate 211. The inlet flow channel is connected to the inlet hole, and the outlet flow channel is connected to the outlet hole.

[0059] The protruding plate 211 is stacked with the fixing component 30, and a receiving cavity can be formed between the protruding plate 211 and the fixing component 30. At least a portion of the mounting block 212 can be disposed in the receiving cavity, while another portion of the mounting block 212 is exposed above the fixing component 30. The exposed portion of the mounting block 212 is used to connect with the connector.

[0060] In this way, the mounting block 212 and the protruding plate 211 are fixed by the fixing component 30, which makes the fixing stability and reliability of the plate part higher. At least part of the mounting block 212 is exposed by the fixing component 30, and the exposed part is used for connecting the connector. This reduces the connection difficulty between the cold head 40 and the connector 21, and improves the connection reliability and stability between the cold head 40 and the connector 21, thereby reducing the risk of leakage of the cooling medium and improving the safety and reliability of the battery device 100.

[0061] like Figure 7 and Figure 8As shown, according to some embodiments of this application, the mounting block 212 includes: a first block 2121 and a second block 2122. In the height direction, the projected outline of the first block 2121 is larger than the projected outline of the second block 2122, and the first block 2121 pushes against the fixing component 30, and the upper surface of the second block 2122 is flush with the upper surface of the fixing component 30.

[0062] The first block 2121 and the second block 2122 are both constructed as quadrangular prisms. The first block 2121 and the second block 2122 are stacked in the height direction. The first block 2121 can be located inside the receiving cavity, and at least a part of the second block 2122 can be located outside the receiving cavity. For example, the upper surface of the second block 2122 can be exposed outside the receiving cavity. Thus, the connection between the fixing component 30 and the mounting block 212 is realized through the first block 2121. The projected outline size of the first block 2121 is larger than that of the second block 2122, which can also realize the limiting fit, reduce the probability of the mounting block 212 moving, and improve the connection stability and reliability.

[0063] In other words, the first block 2121 pushes against the fixing component 30, which can realize the limiting cooperation between the fixing component 30 and the mounting block 212 and reduce the movement of the mounting block 212. The upper surface of the second block 2122 is flush with the upper surface of the fixing component 30. While facilitating the connection and assembly between the cold head 40 and the mounting block 212, it can also reduce the size of the part of the cold head 40 protruding from the fixing component 30 in the connection area with the connector 21. The smaller protrusion can also reduce the probability of the connection area between the cold head 40 and the connector 21 being impacted, thereby improving reliability and stability.

[0064] Combination Figures 3-6 As shown, according to some embodiments of this application, the fixing component 30 includes a lower fixing flange 32 and an upper fixing flange 31. Both the lower fixing flange 32 and the upper fixing flange 31 are connected to the frame 11, and a receiving cavity is defined between the upper fixing flange 31 and the lower fixing flange 32. At least a portion of the joint portion 21 is located in the receiving cavity.

[0065] The upper fixed flange 31 and the lower fixed flange 32 are arranged opposite each other in the thickness direction and are at least partially spaced apart to form a receiving cavity between the upper fixed flange 31 and the lower fixed flange 32. The thickness of the receiving cavity is similar to the thickness of the first block 2121 so that the first block 2121 extends into the receiving cavity to fix and limit the mounting block 212.

[0066] In this way, both the upper fixed flange 31 and the lower fixed flange 32 are connected to the frame 11, which can improve the structural stability and structural strength of the fixing assembly 30, and further improve the connection stability and reliability between the joint 21 and the cold head 40. At the same time, based on the setting of the accommodating cavity, the limiting of the docking head 21 can be achieved.

[0067] like Figure 5 and Figure 6 As shown, according to some embodiments of this application, the lower fixed flange 32 includes: a connecting flange 321 and a first plate 322. The connecting flange 321 is connected to the frame 11, and the first plate 322 is located on the side of the connecting flange 321 away from the frame 11, and the first plate 322 participates in defining the receiving cavity.

[0068] Specifically, the first plate 322 and the protruding plate 211 are arranged opposite to each other and are fitted together. The first plate 322 can be provided with mounting holes, and the protruding plate 211 is also formed with assembly holes. By fasteners passing through the mounting holes and assembly holes, the cold plate 20 and the lower fixed flange 32 are fixed, which improves the fixing stability and reliability of the fixing component 30 and the cold plate 20. At the same time, the connecting flange 321 is located on the peripheral edge of the first plate 322 and is flipped upward relative to the first plate 322 to connect with the frame 11. While the frame 11 is connected to the connecting flange 321, the connecting flange 321 will not interfere with the assembly of the protruding plate 211 and the lower fixed flange 32. This can also reduce the assembly difficulty between the fixing component 30 and the protruding plate 211 and eliminate the fit gap between them, thereby improving the fixing stability and reliability.

[0069] See Figure 6 According to some embodiments of this application, a clearance portion 3221 is provided on the first plate 322, which is used to clearance the mounting block 212 of the joint portion 21.

[0070] In other words, the first plate 322 is located between the upper fixed flange 31 and the protruding plate 211, while the mounting block 212 needs to be fixed to the protruding plate 211 located outside the accommodating cavity. In order to avoid the mounting block 212, a clearance part 3221 needs to be provided on the first plate 322. The clearance part 3221 can avoid the mounting block 212, so that the cold head 40 and the joint part 21 can be directly connected, reducing the connection interface and improving the sealing reliability and stability. At the same time, the clearance part 3221 can also limit the mounting block 212 on the periphery of the mounting block 212, which can further improve the fixing stability of the mounting block 212 and improve the sealing stability.

[0071] like Figure 3 and Figure 4As shown, according to some embodiments of this application, the upper fixed flange 31 includes: a side plate 311 and a second plate 312. The side plate 311 is connected to the lower fixed flange 32, and the second plate 312 is opposite to the first plate 322. The first plate 322, the side plate 311 and the second plate 312 define an accommodating cavity.

[0072] Specifically, the first plate 322 and the second plate 312 are arranged opposite to each other, and the side plate 311 surrounds the periphery of the first plate 322 to form a sealed space between the upper fixed flange 31 and the lower fixed flange 32. The first block 2121 is located in the accommodating cavity, which can reduce the influence of foreign objects on the docking head 21, thereby improving the connection stability and reliability between the cold head 40 and the connector 21.

[0073] See Figure 3 and Figure 4 According to some embodiments of this application, the second plate 312 includes: a first plate segment 3121, an inclined plate segment 3122 and a second plate segment 3123. The second plate segment 3123 is higher than the first plate segment 3121, and the inclined plate segment 3122 is connected to the first plate segment 3121 and the second plate segment 3123. The first plate segment 3121 is used to limit the joint portion 21, and the second plate segment 3123 is used to fix the cold head 40.

[0074] Specifically, the first plate segment 3121, the inclined plate segment 3122, and the second plate segment 3123 are connected in sequence. The first plate segment 3121 can be located above the first block 2121 to limit the first block 2121. The second plate segment 3123 protrudes relative to the first plate segment 3121 and is flush with the second block 2122, and can form a mounting hole. The cold head 40 is fixed on the second plate segment 3123 by fasteners to improve the stability and reliability of the cold head 40 on the fixing component 30.

[0075] like Figure 9 and Figure 10 As shown, according to some embodiments of this application, a connecting ear 41 is provided on the periphery of the cold head 40, the tube end 42 of the cold head 40 is inserted into the connector 21 and is sealed and connected to the connector 21, and the connecting ear 41 is connected to the fixing component 30.

[0076] The cold head 40 has a tube end 42 formed on one side surface. One end of the tube end is connected to the flow channel and the flow channel, and the other end of the flow channel is formed to the input end and the output end on the other side surface of the cold head 40. The input end and the output end can be connected to the inlet pipe and the outlet pipe of the external cooling medium supply component. The connecting ear 41 formed on the cold head 40 can be fixed to the second plate segment 3123 to improve the connection reliability between the cold head 40 and the fixing component 30 and improve the sealing reliability between the cold head 40 and the connector 21.

[0077] It should be noted that the upper fixed flange 31 is welded and fixed to the frame 11 at least on the side edge of the side plate 311 facing the frame 11, and the connecting flange 321 of the lower fixed flange 32 is welded and fixed to the frame 11. The cold plate 20 is located on the lower side of the first plate 322, and the first plate 322 and the cold plate 20 can be fixed by fasteners, such as screws or rivets, after being stacked.

[0078] This application provides a vehicle, including the battery device 100 in the above embodiments.

[0079] The vehicle according to the embodiments of this application uses the above-described battery device 100, and the technical effects are the same as those of the above-described battery device 100, which will not be repeated here.

[0080] The battery device 100 and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized by, include: A housing (10) for housing individual battery cells; A cold plate (20), at least a portion of which is disposed inside the housing (10), and the joint portion (21) of the cold plate (20) extends out of the frame (11) of the housing (10); A fixing component (30) is connected to the frame (11), and the connector (21) is connected to the fixing component (30); The cold head (40) is connected to the fixing component (30) and communicates with the connector (21).

2. The battery device according to claim 1, characterized by The connector (21) includes a protruding plate (211) and a mounting block (212) connected to the protruding plate (211). The protruding plate (211) is stacked below the fixing assembly (30) and at least a portion of the mounting block (212) is exposed above the fixing assembly (30) and is used to communicate with the cold head (40).

3. The battery device of claim 2, wherein, The mounting block (212) includes a first block (2121) and a second block (2122). In the height direction, the projected outline of the first block (2121) is larger than the projected outline of the second block (2122), and the first block (2121) abuts against the fixing component (30). The upper surface of the second block (2122) is flush with the upper surface of the fixing component (30).

4. The battery device of claim 1, wherein The fixing component (30) includes a lower fixing flange (32) and an upper fixing flange (31), both of which are connected to the frame (11), and a receiving cavity is defined between the upper fixing flange (31) and the lower fixing flange (32), at least a portion of the joint portion (21) is located within the receiving cavity.

5. The battery device of claim 4, wherein, The lower fixed flange (32) includes a connecting flange (321) and a first plate (322). The connecting flange (321) is connected to the frame (11). The first plate (322) is located on the side of the connecting flange (321) away from the frame (11), and the first plate (322) participates in defining the receiving cavity.

6. The battery device according to claim 5, characterized in that, The first plate (322) is provided with a clearance part (3221), which is used to avoid the mounting block (212) of the joint part (21).

7. The battery device of claim 5, wherein The upper fixed flange (31) includes a side plate (311) and a second plate (312). The side plate (311) is connected to the lower fixed flange (32). The second plate (312) is opposite to the first plate (322), and the first plate (322), the side plate (311), and the second plate (312) define the receiving cavity.

8. The battery device of claim 7, wherein, The second plate (312) includes: a first plate segment (3121), an inclined plate segment (3122), and a second plate segment (3123). The second plate segment (3123) is higher than the first plate segment (3121), and the inclined plate segment (3122) is connected to the first plate segment (3121) and the second plate segment (3123). The first plate segment (3121) is used to limit the connector (21), and the second plate segment (3123) is used to fix the cold head (40).

9. The battery device of claim 1, wherein, The cold head (40) is provided with a connecting ear (41) on its periphery. The tube end (42) of the cold head (40) is inserted into the connector (21) and is sealed and connected to the connector (21). The connecting ear (41) is connected to the fixing component (30).

10. A vehicle characterized by comprising: include: The battery device according to any one of claims 1-9.

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