CN218586244U - Battery device - Google Patents

Abstract

The application provides a battery device, which comprises an end plate, a support and a fixing component; one part of the end plate and the support is provided with a limiting groove, and the other part of the end plate and the support is provided with a limiting structure; the limiting groove is fixedly connected with the limiting structure through the fixing part. In the technical scheme, the fixing of the limiting groove and the limiting structure is realized by fixing the limiting groove and the limiting structure by the fixing part, so that the mounting firmness of the support and the end plate in the battery module is improved; meanwhile, the problem that the installation is too tight or too loose due to the fact that the interference ribs are cut in the interference connection process in the interference connection mode is solved. The connection mode of parts among the battery device that this application provided can install and dismantle many times, is convenient for change the part among the battery device.

Description

a battery device

technical field

The present application relates to the field of batteries, in particular to a battery device.

Background technique

With the improvement of global environmental protection awareness, electric vehicles are becoming more and more popular as a means of transportation for new energy and green travel; as the country continues to increase support for new energy electric vehicles and charging infrastructure, top-level design, policy support, etc. Planning and deployment, electric vehicles are ushering in a period of rapid development, and electric vehicles have become a popular direction for the development of the current automotive industry.

The current electric vehicle uses the electric energy stored in the battery as the power source. With the development of electric vehicles, the battery, the main component of electric vehicles, is also developing rapidly. The battery device currently used in electric vehicles uses multiple battery modules to form a battery. Bag. The end plate and support of the battery device are one of the core components of the battery device.

However, in the prior art, the support and the end plate are connected through interference ribs. This connection method has a low error tolerance, which often causes the assembly to be too loose or too tight; and the support is too tight in the interference installation between metal and non-metal. The excess ribs are cut by the metal of the end plate, which can only be installed once. During the process of cutting ribs, the excess ribs will fall off, resulting in loose installation.

Utility model content

The present application provides a battery device, which is used to improve the firmness of the installation of the support and the end plate in the battery device.

The present application provides a battery device. The battery device includes an end plate, a support and a fixing part; in the end plate and the support, a limiting groove is provided on one of the parts, and a limiting groove is provided on the other part. structure; the limiting groove is fixedly connected to the limiting structure through the fixing component. In the above technical solution, by using the fixing part to fix the limiting groove and the limiting structure, the fixing of the limiting groove and the limiting structure is realized, and the firmness of the installation of the support and the end plate in the battery device is improved; At the same time, the problem of too loose or too tight assembly of the support and the end plate is also improved.

Description of drawings

FIG. 1 is a schematic structural diagram of a battery device provided in an embodiment of the present application;

2 is a schematic diagram of the basic structure of a battery device in the prior art;

Fig. 3 is a schematic diagram of plugging and unplugging the support and the end plate along the first direction in the battery device provided by the embodiment of the present application;

Fig. 4 is a schematic diagram of the support structure in the battery device provided by the embodiment of the present application;

Fig. 5 is a front view of the end plate structure in the battery device provided by the embodiment of the present application;

Fig. 6 is a front view after insertion of the support and the end plate in the battery device provided by the embodiment of the present application;

Fig. 7 is a partial enlarged view of part A in Fig. 6 provided by the embodiment of the present application;

Fig. 8 is a schematic diagram of the structure of the limit groove in the support provided by the embodiment of the present application;

Fig. 9 is a schematic structural diagram of the limit structure in the end plate provided by the embodiment of the present application;

FIG. 10 is a schematic structural diagram of a fixing component provided in an embodiment of the present application;

Fig. 11 is a schematic structural diagram of the first buffer and the second buffer provided by the embodiment of the present application;

FIG. 12 is a schematic perspective view of the end plate in the battery device provided by the embodiment of the present application.

In the figure: 1, support; 11, limit slot; 12, card slot; 13, first slot; 14, second slot; 15, first buffer; 16, second buffer; 17, limit Position column; 2, end plate; 21, limit structure; 211, limit rod; 212, limit end; 22, limit hole; 3, fixed part; 31, limit plate; 32, connector; 33 34, through groove; 321, limit protrusion; 322, support member; 111, groove wall; 5, support in the prior art; 6, end plate in the prior art.

Detailed ways

The present application will be further described in detail through the accompanying drawings and embodiments below. Through these descriptions, the features and advantages of the present application will become clearer and more specific.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features involved in different embodiments of the present application described below may be combined with each other as long as they do not constitute a conflict with each other.

The battery device provided in this application may be, but not limited to, a battery module or a battery pack.

In order to facilitate understanding of the battery device provided by the embodiment of the present application, firstly, the overall structure of the battery device is introduced.

Referring to FIG. 1 , the battery device provided by the embodiment of the present application includes basic structures such as an end plate 2 , a support 1 , and a fixing part 3 . However, as shown in FIG. 2, the existing battery device only includes two basic structures of the end plate 6 and the support 5. In the prior art, when the end plate 6 and the support 5 are assembled, the support 5 and the end plate 6 are mostly used. Reinforcement connection, but this connection method has high requirements for suppliers and low tolerance, which often causes the assembly of support 5 and end plate 6 to be too loose or too tight; if one of the components in support 5 or end plate 6 It is made of metal, and the other part with the interference rib is made of non-metallic material. During the interference installation process of the support 5 and the end plate 6, the interference rib of the non-metallic material is cut by another metal material part, which can only be realized once During installation, the interference ribs will fall off during the process of cutting the ribs, resulting in loose installation. For this reason, the embodiment of the present application provides a battery device, which is used to improve the firmness of the installation of the support 1 and the end plate 2 in the battery device; question. It will be described in detail below in conjunction with specific drawings and embodiments.

Referring to Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 7 together, Fig. 3 shows a schematic diagram of plugging and unplugging the support 1 and the end plate 2 along the first direction in the battery device provided by the embodiment of the present application, and Fig. 4 shows A schematic structural diagram of the support 1 in the battery device provided by the embodiment of the present application is shown; FIG. 5 shows a schematic structural view of the end plate 2 provided by the embodiment of the present application; The partial enlarged view of the support 1 and the end plate 2 after plugging.

In the end plate 2 and the support 1 of the embodiment of the present application, a limiting groove 11 is provided on one of the components, and a limiting structure 21 is provided on the other component; the limiting groove 11 and the limiting structure 21 are fixedly connected by the fixing part 3 . In a specific implementation of this embodiment, the limit groove 11 is set at the end of the support 1 close to the end plate 2 along the plugging direction, and the opening direction faces the end plate 2; the limit structure 21 is set on the end plate 2 Close to the end of the support 1 along the plug-in direction; after the limit slot 11 and the limit structure 21 are plugged in, they are fixed by the fixing part 3, which improves the overall firmness of the battery device, and also improves the looseness of the support and the end plate. A tight situation. It should be understood that, in the above example, the limit groove 11 is arranged at the end of the support 1 close to the end plate 2 along the plugging direction, and the limit structure 21 is set at the end of the end plate 2 close to the support 1 along the plugging direction. as an example. However, in other specific implementations in the embodiment of the present application, the limit groove 11 can also be arranged on the end of the end plate 2 close to the support 1 along the plugging direction, and the limit structure 21 is set on the support 1 along the plugging direction. Embodiment near the end of the end plate 2 .

Wherein, the first direction in FIG. 3 is the insertion and extraction direction of the support 1 .

The clamping slot 12 is formed after the limiting groove 11 is plugged with the limiting structure 21 , and the fixing component 3 is inserted into the clamping groove 12 to fix the limiting groove 11 and the limiting structure 21 . The assembly of the limiting groove 11 and the limiting structure 21 will be described below in conjunction with specific drawings.

Please refer to Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7 in combination. Partial enlarged view of part A in 6.

The structure of the limiting structure 21 is not specifically limited in the embodiments of the present application. The limiting structure 21 is a cross structure that can play a clamping function, such as: cross-shaped, T-shaped, Y-shaped, X-shaped, L-shaped Structure; in a specific implementation of the embodiment of the present application, the overall structure of the limiting structure 21 is a T-shaped structure. When the limiting structure 21 is inserted into the limiting groove 11, the limiting structure 21 is partially located in the limiting groove 11, And part of the groove wall 111 of the limiting groove 11 and the partial structure of the limiting structure 21 located in the limiting groove 11 encircle the locking groove 12; the structure of the locking groove 12 is not specifically limited in the embodiment of the present application, and the locking groove 12 It can be an L-shaped structure, or other accommodating structures capable of clamping the limiting structure 21 .

Wherein, the position-limiting structure 21 can be formed by fixed connection of separate components or integrally formed components, and the integrally formed components are preferred.

The fixing part 3 is clamped in the card slot 12, and the opposite sides of the fixing part 3 along the first direction are respectively connected with part of the groove wall 111 of the limiting groove 11 and the partial structure of the limiting structure 21 located in the limiting groove 11. Corresponding abutment; since in a specific implementation of the embodiment of the present application, the card slot 12 is a receiving cavity with horizontal and vertical directions, and the fixing part 3 is a T-shaped cross structure, so the two parts of the fixing part 3 intersect They are respectively inserted into the receiving chambers in the horizontal and vertical directions of the card slot 12, which play a good role in fixing. If the card slot 12 is another type of accommodating cavity in some specific embodiments, then the structure of the fixing component 3 is correspondingly configured to be able to be inserted into the card slot 12 and fix the limiting groove 11 and the limiting structure 21 .

Referring to Figure 3, Figure 7, Figure 8, and Figure 10 together, Figure 8 shows a schematic structural view of the limiting groove 11 provided by the embodiment of the present application, and Figure 10 shows the structure of the fixing part 3 provided by the embodiment of the present application Schematic.

The structure of the limiting groove 11 is not specifically limited in the embodiments of the present application. The limiting groove 11 can be a "convex"-shaped structure or other with multiple accommodation chambers, which can accommodate the limiting structure 21 and can be plugged in. The structure of the fixed part 3. In a specific implementation of the embodiment of the present application, the limiting groove 11 includes a connected first groove body 13 and a second groove body 14; wherein, the first groove body 13 is far away from the support 1 and is close to the end plate 2 along the plugging direction. end, and the width of the first groove body 13 is smaller than the width of the second groove body 14; adopt the above-mentioned scheme, the width of the first groove body 13 is smaller than the width of the second groove body 14, when the limiting structure 21 and the first groove body After the body 13 is completely abutted, the accommodating cavity surrounded by the second groove body 14 and part of the limiting structure 21 can be inserted into the fixing part 3, so as to improve the firmness of the support 1 and the end plate 2 in the battery device.

Wherein, the second direction in FIG. 8 is the width direction of the first groove body 13 and the second groove body 14 .

Specifically, the limiting structure 21 is partially inserted into the first groove body 13, and partially inserted into the second groove body 14; the groove wall 111 of the second groove body 14 and the limiting structure 21 are inserted into the first groove body 13 Part of the structure and the limiting structure 21 is partially inserted into the second slot body 14 to form a slot 12 , and the fixing part 3 can be inserted into the slot 12 to fix the support 1 and the end plate 2 in the battery device. The limiting structure 21 will be described below in conjunction with specific drawings.

Please refer to Fig. 4, Fig. 7, Fig. 9 and Fig. 10 in combination. Fig. 9 shows a schematic structural view of the limiting structure 21 in the end plate 2 provided by the embodiment of the present application, and Fig. 10 shows the fixing structure provided by the embodiment of the present application. Schematic diagram of the structure of part 3.

In a specific implementation of the embodiment of the present application, the limiting structure 21 includes a limiting rod 211 and a limiting end 212; Part 211 is inserted into the second groove body 14;

The limiting end 212 is fixed on the end of the limiting rod 211 away from the end plate 2, and the limiting end 212 is inserted into the first groove 13;

The limiting end portion 212 , the limiting rod 211 are located in the partial structure of the second groove body 14 and the groove wall 111 of the second groove body 14 encloses the locking groove 12 .

Using the above technical solution, after the limit end 212 is inserted into the first groove body 13, part of the structure of the limit rod 211 is inserted into the second groove body 14, and the limit end 212 faces the partial structure of the second groove body 14, The limit rod 211 is located in the part structure of the second groove body 14 and the groove wall 111 of the second groove body 14 encloses the card groove 12, which is convenient for the fixing part 3 to be inserted into the card groove 12 to place the limit structure 21 in the limit groove 11 Fixed connection.

Please refer to Fig. 1, Fig. 3, Fig. 7, Fig. 8 and Fig. 9 in combination. Specifically, in a specific implementation of the embodiment of the present application, the limit rod 211 and the limit end 212 form a T-shaped limit Structure 21;

The limiting end 212 and the limiting rod 211 are located in the part structure of the second groove body 14 and the number of the grooves 12 surrounded by the groove wall 111 of the second groove body 14 is two, and the two grooves 12 are split in The opposite sides of the limit rod 211. The fixing component 3 will be described below in conjunction with specific drawings.

Please refer to FIG. 1, FIG. 3, FIG. 7, FIG. 8, FIG. 9 and FIG. Limiting plate 31. The shape of the outer structure of the limiting plate 31 is the same as the shape of the interior cavity of the card slot 12; after the limiting end 212 is inserted into the first groove body 13, part of the structure of the limiting rod 211 is inserted into the second groove body 14, limiting The partial structure of the position end 212 towards the second groove body 14, the partial structure of the stop rod 211 located in the second groove body 14, and the groove wall 111 of the second groove body 14 enclose the card groove 12. When the limit plate 31 is inserted When entering the inside of the card slot 12, the part of the structure of the limit plate 31 facing the limit end 212 abuts against the part of the structure of the limit end 212, and the part of the structure of the limit plate 31 inserted into the card slot 12 is in contact with the inside of the card slot 12. Each groove wall 111 abuts against each other, and the limiting plate 31 fixes the limiting end portion 212 in contact with the first groove body 13 , thereby realizing the fixed connection between the support 1 and the end plate 2 .

Adopting the above-mentioned technical scheme, inserting the limiting plate 31 into the part structure facing the second groove body 14 from the limiting end 212, the part structure where the limiting rod 211 is located in the second groove body 14, and the groove wall of the second groove body 14 In the slot 12 surrounded by 111, the firmness of the connection between the support 1 and the end plate 2 is improved, thereby ensuring the stability of the battery device in the process of transportation, and at the same time improving the excessive connection caused by the interference connection. The problem of too tight or too loose installation caused by the cutting of surplus ribs in the process of interference connection, the connection method in the specific implementation mode of the embodiment of this application can be installed and disassembled many times, which is convenient for replacing the components in the battery device .

Wherein, the numbers of the clamping slots 12 and the limiting plates 31 are not unique, and two clamping slots 12 and two limiting plates 31 are preferred; the numbers of the clamping slots 12 and the limiting plates 31 should be equal.

Specifically, in another embodiment of the present application, when the number of card slots 12 is two, the number of limiting plates 31 is two, and the fixing part 3 also includes a The connector 32 of the bit board 31. After the limiting end 212 is inserted into the first groove body 13, part of the structure of the limiting rod 211 is inserted into the second groove body 14, the limiting end 212 faces the partial structure of the second groove body 14, and the limiting rod 211 is located Part of the structure of the second groove body 14 and the groove wall 111 of the second groove body 14 enclose the locking groove 12, when the limiting plate 31 is inserted into the locking groove 12, the part of the limiting plate 31 facing the limiting end 212 The structure abuts against the partial structure of the limiting end 212, the part of the structure where the limiting plate 31 is inserted into the card slot 12 abuts against each groove wall 111 inside the card slot 12, and the limiting plate 31 fixes the limiting end 212 abutting in the first slot body 13; since the connecting piece 32 is arranged at the connecting end of the two limiting plates 31, when the limiting plate 31 is fully inserted into the draw slot 12, the connecting piece 32 also abuts against the The limit rod 211 further strengthens the fixed connection between the support 1 and the end plate 2 .

Adopt above-mentioned technical scheme, connect the ends of two limit plates 31 by setting connector 32, limit the length that limit plate 31 is inserted into the draw-in groove 12 inside, avoid when not setting connector 32, limit plate 31 After being inserted from one end of the card slot 12, with the handling and bumping of the battery device, the limit plate 31 becomes loose inside the card slot 12 and slides out from the other end of the card slot 12, resulting in a loose connection between the support 1 and the end plate 2 .

In a specific implementation of the embodiment of the present application, the fixing part 3 is provided with a limit protrusion 321 on the side of the end of the connecting piece 32 facing the support 1; the limit protrusion 321 is limitedly connected with the support 1, and After the support 1 and the end plate 2 are fixedly connected by the fixing part 3, since the stopper 321 is provided on the contact surface of the fixing part 3 and the support 1, the fixing part 3 is not easy to move from the support during the transportation and bumping of the battery device. The seat 1 and the end plate 2 are loosened and slipped, which further improves the stability of the internal components of the battery device and the entire battery device.

In another specific implementation of the embodiment of the present application, the fixing member 3 is provided with a support member 322 on the side of the connecting member 32 facing the end plate 2 , and the support member 322 abuts against the end plate 2 . With the above technical solution, after the support 1 and the end plate 2 are fixedly connected by the fixing part 3, one side of the connecting part 32 in the fixing part 3 abuts against the limiting end 212, and the other side of the connecting part 32 is provided with a supporting part 322 , the support piece 322 abuts against the end plate 2, which can further limit the slight shaking of one end of the connecting piece 32 in the fixed component 3 in the direction of insertion and removal of the support 1 after the assembly of the fixed part 3, the support 1, and the end plate 2 is completed, improving Solve the problem of loosening of the battery device during the process of handling and bumping after the assembly of the support 1 and the end plate 2 in the battery device.

Specifically, in another specific implementation of the embodiment of the present application, the fixing part 3 also includes an avoidance clip 33 abutting against the limit rod 211, and the avoidance clip 33 is fixedly connected with the connecting piece; when the limit When the plate 31 is inserted into the card slot 12, the connecting piece 32 used to connect the two limiting plates 31 in the fixing part 3 abuts against the limiting rod 211; 211 abutment, since the width of the limit rod 211 can be set to different widths according to needs, the connecting piece 32 abuts against the limit rod 211 for many times or as the battery device moves and bumps, the connecting piece 32 abuts against the limit rod 211 All the connecting parts will be worn, and the connection between the support 1 and the end plate 2 will gradually loosen.

In the specific implementation of the embodiment of the present application, an avoidance clip 33 is provided, and one end of the avoidance clip 33 facing the limit rod 211 is set to a shape that matches the outer peripheral contour of the limit rod 211, so that the limit plate 31 can be inserted When reaching the inside of the card slot 12, the avoidance clip 33 is in close contact with the limit rod 211, and the problem of loose connection between the support 1 and the end plate 2 is further improved during the movement and bumping of the entire battery device.

Specifically, in another embodiment of the present application, the fixing part 3 further includes a through slot 34 ; when the fixing part 3 is inserted into the card slot 12 , the through slot 34 is used for accommodating the limiting rod 211 .

Please refer to Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 7, Fig. 9, Fig. 11 and Fig. 12 in conjunction. Fig. 11 shows a schematic structural diagram of the first buffer member and the second buffer member provided by the embodiment of the present application , FIG. 12 shows a schematic diagram of the three-dimensional structure of the end plate in the battery device provided by the embodiment of the present application.

Specifically, in a specific implementation of the embodiments of the present application, a first buffer member 15 is provided on the inner side of the first tank body 13 facing the end plate 2 for buffering the gap between the first tank body 13 and the limiting end 212. squeeze between. When the support 1 is inserted into the end plate 2, the limiting structure 21 abuts against the first groove body 13, and the limiting end 212 in the limiting structure 21 presses the groove wall of the first groove body 13, because the first A first buffer member 15 is provided on the side facing the end plate 2 in the tank body 13, so when the support 1 and the end plate 2 are inserted, the first buffer member 15 is compressed under pressure; when the support 1 and the end plate 2 After the insertion is completed, the support 1 and the end plate 2 are fixed by inserting the fixing part 3 into the card slot 12, and the first buffer member 15 releases the reverse force during the recovery process from the compressed state, so that the support 1 and the end plate can be connected. The board 2 is connected more firmly, realizing seamless connection, and further improving the stability of the battery device.

Wherein, after the fixing part 3 is inserted into the card slot 12, the width of the remaining gap between the first groove body 13 provided with the first buffer member 15 and the limiting end 212 is smaller than the rebound thickness of the first buffer member 15 .

The first buffer member 15 is not uniquely made of specific materials, and compressed foam is preferred.

Specifically, in another embodiment of the present application, the end of the support 1 along the first direction close to the end plate 2 is further provided with a second cushioning piece 16; the second cushioning piece 16 is used for cushioning the support Extrusion between seat 1 and end plate 2. When the support 1 is plugged into the end plate 2, the end of the support 1 facing the end plate 2 and the end of the end plate 2 facing the support 1 abut and squeeze; the end of the support 1 close to the end plate 2 along the first direction The second buffer part 16 is arranged on the upper part, so in the process of inserting the support 1 and the end plate 2, the second buffer part 16 is compressed under pressure; when the support 1 and the end plate 2 are inserted, the fixed The component 3 is inserted into the card slot 12 to fix the support 1 and the end plate 2, and the second buffer member 16 releases the reverse force during the recovery process from the compressed state, which can connect the support 1 and the end plate 2 more firmly. The seamless connection is realized, which further improves the stability of the battery device.

Wherein, the width of the remaining gap between the support 1 and the end plate 2 after the support 1 and the end plate 2 are inserted is smaller than the rebound thickness of the second buffer member 16 .

The second cushioning member 16 is not uniquely made of specific materials, and compressed foam is preferred.

Specifically, in another embodiment of the present application, a limit column 17 is provided on the end of the support 1 close to the end plate 2 along the first direction; on the end plate 2 close to the support 1 along the first direction A limit hole 22 is provided at the end of the limiter; the limit post 17 is plugged into the limit hole 22 .

With the above technical solution, when the support 1 and the end plate 2 are plugged together, when the end of the support 1 facing the end plate 2 abuts against the end of the end plate 2 facing the support 1, the limit column 17 is inserted into the limit hole 22, which further enhances the firmness of the connection between the support 1 and the end plate 2, and limits the horizontal movement of the support 1 and the end plate 2 after being connected.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "back", "left", "right" etc. indicate orientation or position The relationship is an orientation or positional relationship based on the working state of the application, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the application.

In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

The present application has been described above in conjunction with preferred implementations, but these implementations are only exemplary and serve as illustrations only. On this basis, various replacements and improvements can be made to the present application, all of which fall within the protection scope of the present application.

Claims (14)

1. A battery device, characterized in that it includes an end plate, a support and a fixing part; in the end plate and the support, a limiting groove is provided on one of the parts, and a limiting structure is provided on the other part; The limiting groove is fixedly connected to the limiting structure through the fixing component. 2. The battery device according to claim 1, wherein the limiting groove is arranged at the end of the support near the end plate along the plugging direction, and the opening direction faces the end plate; The position-limiting structure is arranged on the end of the end plate close to the support along the plugging-in direction; The limiting structure is partly located in the limiting groove, and part of the wall of the limiting groove and a part of the limiting structure located in the limiting groove encloses a card slot; The fixing part is clamped in the card slot, and the opposite sides of the fixing part along the first direction are respectively located in the limiting groove with part of the groove wall of the limiting groove and the limiting structure Part of the structure of the one-to-one correspondence abutment; Wherein, the first direction is the insertion and removal direction of the support. 3. The battery device according to claim 2, wherein the limiting groove is a "convex"-shaped structure; the limiting groove includes a connected first tank body and a second tank body; wherein, the The first groove is away from the support and is close to the end of the end plate along the plugging direction, and the width of the first groove is smaller than the width of the second groove; The position-limiting structure is partially inserted into the first groove body, and partly inserted into the second groove body; and the groove wall of the second groove body and the position-limiting structure are inserted into the first groove body A part and a part of the position-limiting structure part inserted into the second groove body enclose the locking groove. 4 . The battery device according to claim 2 , wherein the limiting structure is integrally formed with the end plate. 5. The battery device according to claim 3, wherein the limiting structure comprises: A limit rod is fixed on one end of the end plate facing the support, and the limit rod is partially inserted into the second groove; The position-limiting end is fixed on the end of the position-limiting rod away from the end plate, and the position-limiting end is inserted into the first groove; The limiting end, the portion of the limiting rod located in the second groove body and the groove wall of the second groove body enclose the locking groove. 6. The battery device according to claim 5, wherein the limiting rod and the limiting end form a T-shaped limiting structure; The number of the clamping grooves surrounded by the position-limiting end, the part of the position-limiting rod located in the second groove body and the groove wall of the second groove body is two, and the two The draw-in slot is split on two opposite sides of the limiting rod. 7. The battery device according to any one of claims 2-6, wherein the fixing component includes a limiting plate snapped into each of the slots. 8. The battery device according to claim 7, wherein when the number of the card slots is two, the number of the limiting plates is two, and the fixing part further includes two A connecting piece of the limiting plate. 9. The battery device according to claim 8, wherein when the limiting structure includes a limiting rod, the fixing part further includes an avoidance clip abutting against the limiting rod; the avoiding The clip is fixedly connected with the connecting piece. 10 . The battery device according to claim 8 , wherein the fixing part further comprises a limiting protrusion disposed on a side of the end of the connecting member facing the support. 11 . 11. The battery device according to claim 8, wherein the fixing part further comprises a supporting member disposed on the side of the connecting member facing the end plate, and the supporting member abuts against the end plate catch. 12. The battery device according to claim 7, wherein when the position-limiting structure includes a position-limiting end, a first buffer member is provided in the position-limiting slot facing the end plate for The compression between the limiting slot and the limiting end is buffered. 13. The battery device according to claim 7, wherein a second buffer is provided on the end of the support near the end plate along the first direction; the second buffer is used for To cushion the extrusion between the support and the end plate. 14 . The battery device according to claim 7 , wherein a limiting post is provided on the end of the support near the end plate along the first direction; A limit hole is also provided at the end close to the support in one direction; the limit post is plugged into the limit hole.

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