Bolt structure, battery and energy storage device

Abstract

The utility model relates to the technical field of batteries, in particular to a bolt structure, a battery and an energy storage device.The bolt structure comprises a supporting sleeve, a limiting assembly and a bolt body, and the supporting sleeve is provided with a through hole; the limiting assembly is arranged on the supporting sleeve; the bolt body can be arranged in the through hole in a penetrating mode by abutting against the limiting assembly. According to the bolt structure, the supporting sleeve and the limiting assembly are arranged, the supporting sleeve is provided with the through hole, the limiting assembly is arranged on the supporting sleeve, and the bolt body can be arranged in the through hole in a penetrating mode by abutting against the limiting assembly, so that when the lower shell of the battery is produced, the bolt and the lower shell can be integrated, and the bolt body is preassembled to the battery pack; the procedures during assembly of the whole vehicle are reduced, the efficiency during assembly of the whole vehicle is improved, and the equipment investment and the site space limitation during assembly of the whole vehicle are reduced.

Description

Technical Field

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

[0002] At present, power battery packs are generally fixed to the vehicle with bolts. The bolts used are ordinary bolts, which are generally installed at the vehicle factory.

[0003] Installing the fixing bolts of the power battery pack at the vehicle factory will increase the vehicle assembly process, affect the assembly efficiency of the vehicle, and increase the equipment cost and site space requirements of the vehicle assembly workshop. Utility Model Content

[0004] The present application provides a bolt structure, a battery and an energy storage device, which are used to solve the problem in the prior art that the installation of the fixing bolts of the power battery pack in the vehicle factory will increase the assembly steps of the vehicle and affect the assembly efficiency of the vehicle.

[0005] In one aspect, the present application provides a bolt structure, comprising:

[0006] A support sleeve having a through hole;

[0007] A limiting component is arranged on the supporting sleeve;

[0008] The bolt body can be inserted into the through hole by abutting against the limiting component.

[0009] In one possible design, the limiter assembly includes:

[0010] A connecting piece, arranged on the supporting sleeve;

[0011] An abutment member, arranged on a side wall of the bolt body;

[0012] The elastic member is arranged in the through hole and can elastically limit the axial position of the bolt body by abutting against the abutment member and / or the connecting member.

[0013] In one possible design, the elastic member includes:

[0014] A first spring is sleeved on the side wall of the bolt body, one end of the first spring abuts against the connecting member, and the other end of the first spring abuts against the abutting member;

[0015] And / or, the second spring is sleeved on the side wall of the bolt body, one end of the second spring abuts against the abutment member, and the other end abuts against the external mechanism or the inner wall of the support sleeve.

[0016] In a possible design, the abutment member is an annular gasket, and the annular gasket is sleeved on the side wall of the bolt body;

[0017] And / or, a ring groove is formed on the side wall of the bolt body, and the abutment piece is sleeved in the ring groove.

[0018] In one possible design, the connector includes:

[0019] An end cover is arranged at one end of the support sleeve and abuts against the first spring or the abutment member;

[0020] The clamping portion is arranged at the edge of the end cover and is detachably connected to the supporting sleeve.

[0021] In a possible design, a limiting hole is provided on the outer side wall of the support sleeve, and the limiting hole is used to allow the clamping portion to be clamped in to limit the axial position of the end cover.

[0022] In a possible design, the clamping portion includes:

[0023] A first radial section connected to the edge of the end cover and extending in the radial direction of the bolt body;

[0024] An axial section is connected to the first radial section and is arranged along the axial direction of the bolt body. A side of the axial section close to the support sleeve is formed with an inclined surface. In a direction gradually approaching the limiting hole, a distance between the inclined surface and the outer side wall of the support sleeve gradually decreases.

[0025] The second radial section is connected to the axial section, extends along the radial direction of the bolt body, and is used for being inserted into the limiting hole.

[0026] In a possible design, the bolt body includes a bolt head and a bolt shank, and the bolt head is detachably connected to the bolt shank.

[0027] On the other hand, the present application also provides a battery, comprising the bolt structure as described above.

[0028] On the other hand, the present application also provides an energy storage device, comprising the battery as described above.

[0029] The beneficial effects of this application are as follows:

[0030] The bolt structure of the present application is provided with a support sleeve and a limit assembly. The support sleeve has a through hole, and the limit assembly is arranged on the support sleeve. The bolt body can be inserted into the through hole by abutting against the limit assembly, so that the bolt and the lower shell can be integrated when the battery lower shell is produced, and the bolt body can be pre-installed on the battery pack, which reduces the process steps during the assembly of the whole vehicle, improves the efficiency of the assembly of the whole vehicle, and reduces the equipment investment and site space limitations of the assembly of the whole vehicle.

[0031] The battery provided in the present application includes the bolt structure in the present application, and thus also includes all the above-mentioned advantages of the bolt structure.

[0032] The energy storage device provided in the present application includes the battery in the present application, and thus includes all the above-mentioned advantages of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A structural schematic diagram of a bolt structure provided for an embodiment of the present application;

[0035] Figure 2 Another structural schematic diagram of a bolt structure provided for an embodiment of the present application;

[0036] Figure 3 for Figure 2 A cross-sectional view of the bolt structure at AA;

[0037] Figure 4 for Figure 2 AA cross-sectional view of the bolt structure.

[0038] Reference numerals:

[0039] 100, support sleeve; 110, through hole; 120, limiting hole; 130, step surface; 200, limiting assembly; 210, connecting member; 211, end cover; 212, clamping portion; 2121, first radial section; 2122, axial section; 2123, second radial section; 220, abutment member; 230, elastic member; 231, first spring; 232, second spring; 300, bolt body; 310, bolt head; 320, bolt rod; 321, annular groove; 400, side beam. DETAILED DESCRIPTION

[0040] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] Combine the following Figure 1-Figure 4, describes a bolt structure provided in an embodiment of the present application, including a support sleeve 100, a limiting assembly 200 and a bolt body 300, wherein the support sleeve 100 has a through hole 110; the limiting assembly 200 is disposed on the support sleeve 100; and the bolt body 300 can be inserted into the through hole 110 by abutting against the limiting assembly 200. In some specific embodiments, the support sleeve 100 is an annular sleeve, and the support sleeve 100 is fixed to the side beam 400 of the battery pack, for example, a hole is opened at a preset position on the side beam 400 of the battery pack, and the support sleeve 100 is welded to the position where the hole is opened on the side beam 400 of the battery pack. In some specific embodiments, the stopper assembly 200 is disposed at the end of the support sleeve 100, and the outer side wall of the bolt body 300 has a radially extending protrusion, and the stopper assembly 200 axially abuts against the protrusion on the outer side wall of the bolt body 300, so that the bolt body 300 is inserted into the through hole 110 without shaking or falling off from the through hole 110 without external force. In other specific embodiments, the stopper assembly 200 is disposed on the inner hole wall of the support sleeve 100, and the stopper assembly 200 radially abuts against the outer side wall of the bolt body 300, so that the bolt body 300 is inserted into the through hole 110 without shaking or falling off from the through hole 110 without external force.

[0042] By utilizing the technical solution of the above-mentioned embodiment of the present application, a support sleeve 100 and a limit assembly 200 are provided, the support sleeve 100 has a through hole 110, and the limit assembly 200 is provided on the support sleeve 100. The bolt body 300 can be abutted against the limit assembly 200 and can be passed through the through hole 110 without shaking or falling off from the through hole 110 when there is no external force. Therefore, the bolt and the lower shell can be integrated when the lower shell of the battery is produced, and the bolt body 300 can be pre-installed on the battery pack, thereby reducing the process during the assembly of the whole vehicle, improving the efficiency of the assembly of the whole vehicle, and reducing the equipment investment and site space limitations of the assembly of the whole vehicle.

[0043] Reference Figure 3As shown, in some embodiments of the present application, the limiting assembly 200 includes a connecting member 210, an abutting member 220 and an elastic member 230, the connecting member 210 is arranged on the support sleeve 100; the abutting member 220 is arranged on the side wall of the bolt body 300; the elastic member 230 is arranged in the through hole 110, and can elastically limit the axial position of the bolt body 300 by abutting against the abutting member 220 and / or the connecting member 210. In some specific embodiments, the connecting member 210 is arranged at the end of the support sleeve 100, for example, the connecting member 210 is arranged at the upper end of the support sleeve 100; the abutment member 220 is arranged along the radial direction of the bolt body 300 and the side wall of the bolt body 300, wherein the abutment member 220 can be an integral structure with the bolt body 300, or the abutment member 220 and the bolt body 300 are a split structure; the expansion and contraction direction of the elastic member 230 is parallel to the axial direction of the bolt body 300, for example, when the elastic member 230 is a spring, the length direction of the elastic member 230 is arranged along the axial direction of the bolt body 300, and the elastic member 230 is in an axial compression state along the bolt body 300 by abutting against the abutment member 220 and / or the connecting member 210, and the bolt body 300 is penetrated into the through hole 110 under the elastic support of the elastic member 230. In this way, when there is no external force, the bolt body 300 can be inserted into the through hole 110 under the elastic support of the elastic member 230 without shaking or falling off from the through hole 110 .

[0044] Reference Figure 3 , Figure 4 As shown, in some embodiments of the present application, the elastic member 230 includes a first spring 231 and / or a second spring 232. In some specific embodiments, the elastic member 230 includes a first spring 231 and a second spring 232, the first spring 231 is sleeved on the side wall of the bolt body 300, the upper end of the first spring 231 abuts against the connecting member 210, and the lower end of the first spring 231 abuts against the abutting member 220; the second spring 232 is located below the first spring 231, the second spring 232 is sleeved on the side wall of the bolt body 300, the upper end of the second spring 232 abuts against the abutting member 220, and the lower end of the second spring 232 abuts against the external mechanism or the support sleeve 1 00 abuts against the inner wall of the battery pack; for example, the lower end of the second spring 232 abuts against the side beam 400 of the battery pack; for another example, the inner wall of the support sleeve 100 is provided with a radially protruding bump, and the lower end of the second spring 232 abuts against the bump on the inner wall of the support sleeve 100. Under the joint action of the elastic force of the first spring 231 and the second spring 232, the abutment 220 is limited between the first spring 231 and the second spring 232, so that in the absence of other external force support, the bolt body 300 can be inserted into the through hole 110 without falling or shaking.

[0045] In other specific embodiments, the elastic member 230 only includes a first spring 231, which is sleeved on the side wall of the bolt body 300, the upper end of the first spring 231 abuts against the connecting member 210, and the lower end of the first spring 231 abuts against the abutting member 220. A step surface 130 is provided on the inner wall of the support sleeve 100. Under the elastic force of the first spring 231, the abutting member 220 is pushed down to the step surface 130, so that the bolt body 300 can be inserted into the through hole 110 without falling or shaking in the absence of other external force.

[0046] In some other specific embodiments, the elastic member 230 only includes a second spring 232, which is sleeved on the side wall of the bolt body 300, and the upper end of the second spring 232 abuts against the abutment member 220, and the lower end of the second spring 232 abuts against the inner wall of the external mechanism or the support sleeve 100. For example, the lower end of the second spring 232 abuts against the side beam 400 of the battery pack; for another example, the inner wall of the support sleeve 100 is provided with a radially protruding bump, and the lower end of the second spring 232 abuts against the bump on the inner wall of the support sleeve 100, so that the bolt body 300 can be inserted into the through hole 110 without falling or shaking without the support of other external forces.

[0047] Reference Figure 3 , Figure 4 As shown, in some embodiments of the present application, the abutment member 220 is an annular gasket, which is sleeved on the side wall of the bolt body 300. Specifically, the annular gasket is a steel gasket, an aluminum gasket, or a rubber gasket. In other specific embodiments, an annular groove 321 is provided on the side wall of the bolt body 300, and the abutment member 220 is sleeved in the annular groove 321. The annular groove 321 is provided, which is equivalent to axially limiting the annular gasket, so that the bolt body 300 and the annular gasket will not be axially displaced.

[0048] Reference Figure 3 , Figure 4 As shown, in some embodiments of the present application, the connector 210 includes an end cap 211 and a clamping portion 212. The end cap 211 is disposed at one end of the support sleeve 100, and the end cap 211 abuts against the first spring 231 or the abutting member 220; the clamping portion 212 is disposed at the edge of the end cap 211, and the clamping portion 212 is detachably connected to the support sleeve 100. In some specific embodiments, the end cap 211 is an annular end cap 211, and the bolt body 300 can extend from the center hole of the annular end cap 211; the clamping portion 212 and the support sleeve 100 can be connected by a threaded connection or a concave-convex block structure, so that when the first spring 231 and the second spring 232 are installed, the end cap 211 can be removed from the upper end of the support sleeve 100, and after the first spring 231 and the second spring 232 are installed, the end cap 211 is fixed to the upper end of the support sleeve 100.

[0049] Reference Figure 3 As shown, in some embodiments of the present application, the outer wall of the support sleeve 100 is provided with a limiting hole 120, and the limiting hole 120 is used to allow the clamping portion 212 to be clamped in and axially limit the end cover 211. Specifically, the clamping portion 212 is a component that can produce a slight deformation, for example, a steel structure or an aluminum structure or a hard rubber structure, so that the clamping portion 212 can be inserted into the limiting hole 120 after being slightly deformed by breaking it apart, and after being inserted into the limiting hole 120, it can also be ensured that it is not easy to escape from the limiting hole 120.

[0050] Reference Figure 3 In some embodiments of the present application, the clamping portion 212 includes a first radial section 2121, an axial section 2122, and a second radial section 2123. The first radial section 2121 is connected to the edge of the end cover 211 and extends in the radial direction of the bolt body 300. The axial section 2122 is connected to the first radial section 2121 and is arranged in the axial direction of the bolt body 300. A slope is formed on the side of the axial section 2122 close to the support sleeve 100. In the direction gradually approaching the limiting hole 120, the distance between the slope and the outer wall of the support sleeve 100 gradually decreases. The second radial section 2123 is connected to the axial section 2122 and extends in the radial direction of the bolt body 300, and is used to be clamped in the limiting hole 120. In some specific embodiments, the end cover 211, the first radial section 2121, the axial section 2122, and the second radial section 2123 are an integrated structure. The axial section 2122 can be bent apart in a direction away from the support sleeve 100, and the second radial portion can be embedded in the limiting hole 120 after the axial section 2122 is slightly deformed; by forming an inclined surface on the side of the axial section 2122 close to the support sleeve 100, the supporting force of the axial section 2122 can be increased, so that the second radial portion is not easy to fall out of the limiting hole 120 after being embedded in the limiting hole 120.

[0051] Reference Figure 3 In some embodiments of the present application, the bolt body 300 includes a bolt head 310 and a bolt rod 320, and the bolt head 310 is detachably connected to the bolt rod 320. In some specific embodiments, the bolt head 310 is connected to the bolt rod 320 by threads. Specifically, an internal threaded hole is provided at one end of the bolt rod 320, and an external thread is provided on the bolt head 310, and the bolt head 310 is installed at the internal threaded hole. Since the abutment 220 is sleeved on the bolt rod 320 and cannot pass through the through hole 110, the bolt head 310 can be detachably connected to the bolt rod 320, so that the bolt rod 320 can pass through the through hole 110 and then be connected to the bolt head 310.

[0052] The assembly process of the bolt structure of the embodiment of the present application:

[0053] Weld the support sleeve 100 to the side beam 400; assemble the second spring 232 into the through hole 110 of the support sleeve 100; sleeve the abutment 220 onto the bolt rod 320, insert the bolt rod 320 into the second spring 232, and press the abutment 220 onto the upper end of the second spring 232; install the bolt head 310 onto the bolt rod 320; sleeve the first spring 231 onto the abutment 220 of the bolt rod 320; press the end cover 211 onto the upper end of the first spring 231 and clamp the clamping part 212 into the limiting hole 120 of the outer wall of the support sleeve 100; after the installation is completed, the first spring 231 and the second spring 232 are both in a compressed state;

[0054] When the battery pack is assembled with the vehicle, the tightening gun presses against the bolt head 310 and rotates to further compress the first spring 231 and the second spring 232, and the bolt rod 320 extends into the corresponding fixing nut or other threaded structure to fix the battery pack on the vehicle.

[0055] A battery is also provided in an embodiment of the present application, comprising the bolt structure in the above embodiment. Specifically, the bolt structure is installed on the side beam of the battery.

[0056] It should be noted that the battery includes a bolt structure, which also includes all the advantages of the bolt structure mentioned above, which will not be repeated here.

[0057] An energy storage device is also provided in an embodiment of the present application, including the battery in the above embodiment. The specific energy storage device may be a vehicle, an operating machine, etc.

[0058] It should be noted that the energy storage device includes a battery, which also includes all the advantages of the battery mentioned above, which will not be repeated here.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A bolt structure, characterized in that: include: A support sleeve having a through hole; A limiting component is arranged on the supporting sleeve; The bolt body can be inserted into the through hole by abutting against the limiting assembly; The limiting component comprises: A connecting piece, arranged on the supporting sleeve; An abutment member, arranged on a side wall of the bolt body; An elastic member, disposed in the through hole, capable of elastically limiting the axial position of the bolt body by abutting against the abutment member and / or the connection member; The abutment member is an annular gasket, and the annular gasket is sleeved on the side wall of the bolt body; The elastic member comprises: A first spring, sleeved on the side wall of the bolt body, one end of the first spring abuts against the connecting member, and the other end of the first spring abuts against the abutting member; A second spring is sleeved on the side wall of the bolt body, one end of the second spring abuts against the abutment member, and the other end abuts against the external mechanism or the inner wall of the support sleeve; The connecting piece comprises: An end cover, disposed at one end of the support sleeve and abutting against the first spring; The clamping portion is arranged at the edge of the end cover and is detachably connected to the support sleeve.

2. The bolt structure according to claim 1, characterized in that: An annular groove is provided on the side wall of the bolt body, and the abutment piece is sleeved in the annular groove.

3. The bolt structure according to claim 1, characterized in that: A limiting hole is provided on the outer side wall of the support sleeve, and the limiting hole is used to allow the clamping portion to be clamped in to limit the axial position of the end cover.

4. The bolt structure according to claim 3, characterized in that: The clamping portion comprises: A first radial section connected to the edge of the end cover and extending in the radial direction of the bolt body; An axial section connected to the first radial section and arranged along the axial direction of the bolt body, wherein a slope is formed on a side of the axial section close to the support sleeve, and a distance between the slope and the outer side wall of the support sleeve gradually decreases in a direction gradually approaching the limiting hole; The second radial section is connected to the axial section, extends along the radial direction of the bolt body, and is used to be inserted into the limiting hole.

5. The bolt structure according to claim 1, characterized in that: The bolt body comprises a bolt head and a bolt rod, and the bolt head is detachably connected to the bolt rod.

6. A battery, characterized in that: The invention comprises the bolt structure as described in any one of claims 1 to 5.

7. An energy storage device, characterized in that: Comprising the battery as claimed in claim 6.

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