Locking structure, battery pack and battery cluster

Abstract

The utility model discloses a locking structure, battery pack and battery cluster, wherein, locking structure, include: fixed block is provided with accommodating chamber, is equipped with the opening of communicating with outside on accommodating chamber, and the two coaxial arrangement's guide hole of opening is seted up on the lateral wall of fixed block, at least one spring is arranged in accommodating chamber, locking block is arranged in accommodating chamber, and can move along the axial direction of accommodating chamber, and one end of locking block is in contact with spring, and the other end of locking block extends and inserts the end, and the taper hole is seted up on locking block, and the taper hole is extended and seted up from one guide hole to the direction of another guide hole, wherein, locking block includes the lock state and locking state. Therefore, it is more time -saving and labor -saving in the process of locking and unlocking, and subsequent dismounting maintenance work is also very convenient, and the dismounting difficulty is low, and the time -consumption is short, and in the emergency, the probability of causing serious safety accident due to long dismounting time is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery pack fixing technology, and in particular to a locking structure, battery pack and battery cluster. Background Technology

[0002] In the construction of battery energy storage systems, the secure fixing of battery modules is a core element concerning safety. Especially when multiple battery packs are assembled into a battery cluster, the method of fixing the battery packs profoundly affects many key performance aspects of the energy storage system, such as structural reliability, process feasibility, production efficiency, and product cost. Traditionally, battery packs are mostly connected and fixed to brackets using bolts or nuts. However, this fixing method is not only time-consuming and labor-intensive to install, but also extremely inconvenient in subsequent disassembly and maintenance. Particularly when battery modules face emergency situations requiring rapid disassembly, the difficulty and time-consuming nature of this fixing method can potentially lead to serious safety accidents. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, one objective of this utility model is to propose a locking structure, battery pack, and battery cluster that saves more time and effort during locking and unlocking, and makes subsequent disassembly and maintenance extremely convenient. The disassembly is simple and quick, and in emergency situations, it reduces the probability of serious safety accidents caused by long disassembly times.

[0005] To achieve the above objectives, the first aspect of this utility model proposes a locking structure, comprising: a fixing block having a receiving cavity with an opening communicating with the outside, and two coaxially arranged guide holes on the side wall of the fixing block; at least one spring disposed in the receiving cavity; and a locking block disposed in the receiving cavity and movable along the axial direction of the receiving cavity, one end of the locking block abutting against the spring, the other end of the locking block extending to a plug-in end, and a tapered hole provided on the locking block extending from one of the guide holes toward the other guide hole; wherein the locking block includes an unlocked state and a locked state; in the unlocked state, the spring is in a compressed state, and the plug-in end is completely placed in the receiving cavity; in the locked state, the spring is in an extended state, the plug-in end protrudes from the fixing block through the opening, and the projection of the tapered hole in the axial direction partially overlaps with at least one of the guide holes.

[0006] The locking structure of this utility model only requires driving the locking block to move axially within the receiving cavity, thereby switching the locking block between the unlocked and locked states to fix or release the battery pack. Compared to the existing technology where the battery pack is mostly connected and fixed to the bracket with bolts or nuts, this solution is significantly more time-saving and labor-saving during installation. At the same time, subsequent disassembly and maintenance are also extremely convenient. Not only is the disassembly difficulty greatly reduced, but it also takes less time. In emergency situations, it reduces the probability of serious safety accidents caused by long disassembly times.

[0007] In addition, the locking structure proposed in the application may also have the following additional technical features:

[0008] Specifically, the receiving cavity includes a first chamber, a second chamber, and a third chamber connected in sequence;

[0009] The width of the second chamber is greater than the width of the first chamber and the third chamber;

[0010] The width of the plug-in end is less than the width of the third chamber. The width of the locking block is greater than the width of the first chamber and the third chamber, but less than the width of the second chamber. In the locked state, the side wall of the locking block abuts against the inner wall of the second chamber adjacent to the third chamber. In the unlocked state, the side wall of the locking block abuts against the inner wall of the second chamber adjacent to the first chamber.

[0011] Specifically, it also includes a steel rod, the diameter of which is smaller than the diameter of the guide hole and the small end of the tapered hole. One end of the steel rod is inserted into the tapered hole through the guide hole near the large end of the tapered hole. The steel rod is in contact with the inner wall of the tapered hole and can move axially relative to the tapered hole to drive the locking block to slide.

[0012] Specifically, the insertion end of the steel rod is conical.

[0013] Specifically, the apex angle of the tapered hole is N, where N is greater than 30° and less than or equal to 90°, and the apex angle of the insertion end of the steel rod is less than N.

[0014] Specifically, the small end of the tapered hole is a cylindrical hole with a depth of b, which is greater than or equal to 1.5 mm and less than or equal to 5 mm.

[0015] And / or, the thickness of the locking block along the depth direction of the cylindrical hole is B, where B is greater than 10 mm.

[0016] Specifically, it also includes at least one guide pin, which is disposed within the receiving cavity, and the spring is coaxially sleeved on the guide pin.

[0017] Specifically, the opening includes a side opening and a top opening, and the side opening and the top opening are connected. The fixing block is detachably connected to a cover plate, which is used to block the top opening.

[0018] The second aspect of this utility model provides a battery pack including the locking structure described in the first aspect, wherein at least one of the locking structures is provided on the outer wall of the battery pack.

[0019] The third aspect of this utility model provides a battery cluster, including the battery pack and frame described in the second aspect above, wherein the frame is provided with a limiting hole at the position corresponding to the plug-in end, and the plug-in end can be inserted into the limiting hole. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a battery cluster according to an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the locking structure according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the locking structure in the locked state according to an embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional schematic diagram of the locking structure in the unlocked state according to an embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional schematic diagram of the locking structure in the locked state according to an embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional view of a locking block according to an embodiment of the present invention;

[0028] Figure 7 This is a top view of a locking block according to an embodiment of the present invention;

[0029] Figure 8 According to Figure 7 A cross-sectional view of the locking block along line AA.

[0030] As shown in the figure:

[0031] 1. Fixing block; 10. Receiving cavity; 11. Opening; 12. Guide hole; 100. First chamber; 101. Second chamber; 102. Third chamber; 103. Mounting hole;

[0032] 2. Spring;

[0033] 3. Locking block; 30. Insertion end; 31. Tapered hole; 310. Cylindrical hole;

[0034] 4. Steel chisel;

[0035] 5. Guide pin;

[0036] 6. Cover plate;

[0037] 1000, Locking structure; 2000, Battery pack; 3000, Frame. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments and features of this utility model can be combined with each other.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0040] In the construction of battery energy storage systems, the secure fixing of battery modules is a core element concerning safety. Especially when multiple battery packs are assembled into a battery cluster, the method of fixing the battery packs profoundly affects many key performance aspects of the energy storage system, such as structural reliability, process feasibility, production efficiency, and product cost. Traditionally, battery packs are mostly connected and fixed to brackets using bolts or nuts. However, this fixing method is not only time-consuming and labor-intensive to install, but also extremely inconvenient in subsequent disassembly and maintenance. Particularly when battery modules face emergency situations requiring rapid disassembly, the difficulty and time-consuming nature of this fixing method can potentially lead to serious safety accidents.

[0041] To solve the above problems, such as Figure 1As shown, this embodiment of the utility model provides a battery pack, including a battery pack 2000 and a frame 3000. The frame 3000 has a limiting hole at the position corresponding to the insertion end 30, and one end of the insertion end 30 can be inserted into the limiting hole (not shown in the figure). Multiple battery packs 2000 can be configured and properly housed within the frame 3000. To ensure the battery pack 2000 is securely installed within the frame 3000, one end of the locking block 3 (i.e., the insertion end 30) can be inserted into the limiting hole, thereby achieving a secure connection between the locking block 3 and the frame 3000. To release the locking control of the battery pack 2000, simply move the locking block 3 away from the frame 3000, causing the insertion end 30 to disengage from the limiting hole, thus easily unlocking the battery pack. Compared to existing technologies where battery packs are typically connected and fixed to brackets using bolts or nuts, this solution is more time-saving and labor-saving during installation, and subsequent disassembly and maintenance are also extremely convenient. Disassembly is simple and quick, reducing the probability of serious safety accidents caused by prolonged disassembly in emergency situations.

[0042] It should be noted that the frame 3000 consists of four vertical bars, and multiple horizontal bars arranged vertically at equal intervals are provided between every two adjacent vertical bars. The four horizontal bars together form a support surface on the same plane for placing the battery pack 2000. The placement of the limiting holes is flexible; they can be located on either the horizontal bars or the vertical bars, depending on the specific requirements. For example, refer to... Figure 1 As shown, since the locking block 3 is arranged vertically towards the horizontal bar, the limiting hole is selected to be opened on the horizontal bar.

[0043] Furthermore, the size and shape of the plug end 30 are adapted to the size and shape of the limiting hole, thereby improving the stability of the plug end 30 when plugged into the limiting hole, and thus improving the stability of the battery pack 2000 fixed in the frame 3000.

[0044] This utility model embodiment also provides a battery pack 2000 described above, including a locking structure 1000. At least one locking structure 1000 is provided on the outer wall of the battery pack 2000. The locking structure 1000 can be fixed to the outer wall of the battery pack 2000 by means of riveting, welding, bolting, etc. There is no limitation here, and it can be selected according to the actual situation.

[0045] It should be noted that, in order to improve the stability of the battery pack 2000 mounted on the frame 3000, multiple locking structures 1000 can be provided, such as 2, 3, 4, etc., which can be selected according to the actual situation to form multiple stable connection points with the frame 3000.

[0046] like Figures 2-8As shown, this utility model embodiment also provides a locking structure 1000 described above, which may include a fixing block 1, a spring 2, and a locking block 3.

[0047] The fixing block 1 is provided with a receiving cavity 10, and the receiving cavity 10 has an opening 11 communicating with the outside. Two coaxially arranged guide holes 12 are formed on the side wall of the fixing block 1. Specifically, as shown... Figure 1 As shown, the opening 11 includes a side opening and an upper opening, and the side opening and the upper opening are connected. The fixing block 1 is detachably connected to a cover plate 6. The cover plate 6 is used to block the upper opening. The upper opening is used to lock the block 3 into the receiving cavity 10. The side opening facilitates the insertion end 30 to pass through to the outside. The cover plate 6 is set to block the upper opening and limit the cover plate 6 to prevent the locking block 3 from slipping.

[0048] At least one spring 2 is disposed in the receiving cavity 10. It is understood that, in order to enhance the axial thrust exerted by the spring 2 on the locking block 3, and thus ensure that the locking block 3 has sufficient stability in the locked state, the number of springs 2 can be set to multiple. For example, two or three springs can be selected. The specific number can be flexibly selected according to the actual working conditions and requirements, and is not limited here.

[0049] The locking block 3 is arranged in the receiving cavity 10 and can move along the axial direction of the receiving cavity 10. One end of the locking block 3 abuts against the spring 2, and the other end of the locking block 3 extends to the insertion end 30. It should be noted that the insertion end 30 and the locking block 3 are integrally molded to ensure the firmness when the two are connected together.

[0050] The locking block 3 is provided with a tapered hole 31, which extends from one guide hole 12 toward another guide hole 12. The locking block 3 includes an unlocked state and a locked state. The locking block 3 can be axially moved in the receiving cavity 10 by driving the locking block 3, thereby switching between the unlocked state and the locked state.

[0051] When in the unlocked state, spring 2 is compressed, and the insertion end 30 is fully placed in the receiving cavity 10. When in the locked state, spring 2 is extended, and the insertion end 30 protrudes from the fixing block 1 through the opening 11. Furthermore, the projection of the tapered hole 31 in the axial direction partially overlaps with at least one guide hole 12. It can be understood that... (See also...) Figure 5 The partially overlapping area ensures that the steel rod 4 can be inserted into the tapered hole 31 through the guide hole 12.

[0052] It should be noted that, referring to Figure 5The plug-in end 30 protrudes from the fixing block 1 through the opening 11, and its protrusion length is set as W. Here, the value range of W is limited, that is, 5mm≤W≤50mm. The reason for this setting is that if W is too short, the plug-in end 30 will not be able to effectively engage, or the engagement strength will be insufficient, affecting the stability of the connection; while if W is too long, it will occupy too much space, which is not conducive to the compactness of the overall structure and the rationality of the layout.

[0053] Specifically, in practical applications, the battery pack 2000 is securely fixed within the frame 3000 by the locking structure 1000. In case of an emergency requiring quick disassembly, simply move the locking block 3 towards the spring 2. During this movement, the locking block 3 compresses the spring 2 until the insertion end 30 completely disengages from the limiting hole and retracts into the receiving cavity 10. At this point, the locking block 3 is in the unlocked state, and the constraint on the battery pack 2000 is released.

[0054] If the battery pack 2000 needs to be re-secured, after placing the battery pack 2000 into the frame 3000, its position must be carefully adjusted to ensure that the plug-in end 30 is precisely aligned with the limiting hole. Then, the restriction on the position of the locking block 3 is released, and the elastic potential energy stored in the compressed spring 2 is released instantaneously, pushing the locking block 3 towards the limiting hole, allowing the plug-in end 30 to smoothly insert into the limiting hole, thus completing the securing of the battery pack 2000. At this point, the locking block 3 is in the locked state.

[0055] Compared to existing technologies where battery packs are typically connected and fixed to brackets using bolts or nuts, this solution is significantly more time-saving and labor-saving during installation. Furthermore, subsequent disassembly and maintenance are extremely convenient, greatly reducing the difficulty of disassembly and shortening the time required.

[0056] In one embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the locking structure 1000 also includes a steel rod 4. The diameter of the steel rod 4 is smaller than the diameter of the guide hole 12 and the small end of the tapered hole 31, so that the steel rod 4 can be easily inserted into the tapered hole 31 through the guide hole 12. It can be understood that, referring to... Figure 6 The diameter of the small port of the tapered hole 31 is D.

[0057] One end of the steel rod 4 is inserted into the tapered hole 31 through the guide hole 12 near the large port of the tapered hole 31. The steel rod 4 is in contact with the inner wall surface of the tapered hole 31, and the steel rod 4 can move axially relative to the tapered hole 31 to drive the locking block 3 to slide.

[0058] In the above scheme, the steel rod 4 is provided to facilitate the control of the movement of the locking block 3, which can push the locking block 3 to move axially in the receiving cavity 10, thereby allowing the locking block 3 to switch between the locked state and the unlocked state.

[0059] Specifically, during the process of inserting the steel rod 4 into the tapered hole 31 through the guide hole 12 near the large end of the tapered hole 31 and inserting it axially along the tapered hole 31, the axial thrust of the steel rod 4 is converted into a radial component force on the locking block 3 by the tapered surface structure of the tapered hole 31. The locking block 3 moves toward the spring 2 until the steel rod 4 penetrates the tapered hole 31 and is inserted into another guide hole 12. At this time, the guide hole 12 and the tapered hole 31 are arranged coaxially, and the insertion end 30 is completely retracted into the receiving cavity 10, realizing the switch from the locked state to the unlocked state.

[0060] When it is necessary to switch from the unlocked state to the locked state, simply pull the steel rod 4 out of the conical hole 31 to release the restriction on the locking block 3, release the elastic force of the spring 2, and push the locking block 3 towards the limiting hole, so that the plug end 30 can be smoothly inserted into the limiting hole, thereby completing the fixing of the battery pack 2000.

[0061] Furthermore, such as Figure 4 As shown, the insertion end of the steel rod 4 is conical.

[0062] In the above scheme, the conical shape and the conical surface of the conical hole 31 form a gradual fit. Initially, the contact area is small and the frictional resistance is low. As the insertion depth increases, the contact area gradually expands, achieving a smooth transition and reducing operating torque. Simultaneously, the conical insertion end and the conical surface of the conical hole 31 form a wedge fit. When the steel rod 4 is inserted axially, the conical surface efficiently converts the axial thrust into a radial component force on the locking block 3. This "wedge effect" ensures that the locking block 3 slides stably within the receiving cavity 10, enabling the switching between unlocking and locking states.

[0063] In addition, the tapered mating surface forms continuous sliding friction during axial movement, which reduces stress concentration compared to the cylindrical end design, lowers the wear rate of locking block 3 and steel rod 4, and extends the structural life.

[0064] It should be noted that the locking block 3 and the steel rod 4 should be made of wear-resistant materials and undergo heat treatment to increase surface hardness and ensure long-term reliability. In this embodiment, the steel rod 4 and the locking block 3 can be made of 40Cr material.

[0065] In one embodiment of this utility model, such as Figure 6 As shown, the apex angle of the conical hole 31 is N, where N is greater than 30° and less than or equal to 90°. The apex angle of the insertion end of the steel rod 4 is less than N. It can be understood that, referring to... Figure 6The apex angle refers to the included angle between the two generatrices of the tapered hole 31.

[0066] In the above scheme, if N > 90°, a large force is required to insert the steel rod 4, which is inconvenient to operate; if N < 30°, the extension of the locking block 3 after the steel rod 4 is inserted is too small, and the locking effect is not good. Therefore, the design of 30 < N ≤ 90° can ensure both the convenience of inserting the steel rod 4 and the subsequent locking effect.

[0067] Meanwhile, the apex angle of the insertion end of the steel rod 4 is less than N, which facilitates quick insertion through the overlapping area between the guide hole 12 and the tapered hole 31, and reduces the resistance during insertion.

[0068] In one embodiment of this utility model, such as Figure 6 As shown, the small end of the tapered hole 31 is a cylindrical hole 310, and the depth of the cylindrical hole 310 is b, which is greater than or equal to 1.5 mm and less than or equal to 5 mm.

[0069] In the above scheme, the cylindrical hole 310, as an extension of the small end of the conical hole 31, bears excessive friction and wear during the insertion / removal of the steel rod 4. A depth b ≥ 1.5 mm ensures sufficient material thickness in this area, dispersing the concentrated stress on the edge of the small end of the conical hole by the tip of the steel rod 4, avoiding rapid wear due to insufficient material. Simultaneously, the cylindrical hole 310 serves as the initial guide section for the insertion of the steel rod 4; its cylindrical surface quickly guides the steel rod 4 to align with the axis of the conical hole 31, reducing the risk of insertion misalignment. Furthermore, b ≤ 5 mm avoids excessive friction during insertion and removal of the steel rod 4, which would hinder operation.

[0070] In one embodiment of this utility model, such as Figure 6 As shown, the thickness of the locking block 3 along the depth direction of the cylindrical hole 310 is B, and B is greater than 10mm. Therefore, only by ensuring that the value of B is large enough can the depth of the cylindrical hole 310 be guaranteed and the wear resistance be improved.

[0071] In another embodiment of this utility model, the small end hole of the tapered hole 31 is a cylindrical hole 310, the depth of the cylindrical hole 310 is b, b is greater than or equal to 1.5 mm and less than or equal to 5 mm, and the thickness of the locking block 3 along the depth direction of the cylindrical hole 310 is B, B is greater than 10 mm.

[0072] In the above scheme, a sufficiently large B value ensures the depth of the cylindrical hole 310, improving wear resistance. Furthermore, by setting the cylindrical hole 310 as an extension of the small end of the tapered hole 31, it bears the transitional frictional wear during the insertion / removal of the steel rod 4. A depth b ≥ 1.5 mm ensures sufficient material thickness in this area, dispersing the concentrated stress of the steel rod 4 tip against the edge of the tapered hole, avoiding rapid wear due to insufficient material. Simultaneously, the cylindrical hole 310 serves as the initial guide section for the insertion of the steel rod 4, its cylindrical surface quickly guiding the steel rod 4 to align with the axis of the tapered hole 31, reducing the risk of insertion misalignment. A b less than or equal to 5 mm avoids excessive friction during the insertion and removal of the steel rod 4, which would be difficult to operate.

[0073] In one embodiment of this utility model, such as Figure 7 and Figure 8 As shown, the receiving cavity 10 includes a first chamber 100, a second chamber 101, and a third chamber 102 connected in sequence.

[0074] The width of the second chamber 101 is greater than the width of the first chamber 100 and the third chamber 102. The width of the plug end 30 is less than the width of the third chamber 102. The width of the locking block 3 is greater than the width of the first chamber 100 and the third chamber 102, but less than the width of the second chamber 101. In the locked state, the side wall of the locking block 3 abuts against the inner wall of the second chamber 101 adjacent to the third chamber 102. In the unlocked state, the side wall of the locking block 3 abuts against the inner wall of the second chamber 101 adjacent to the first chamber 100.

[0075] In the above design, the locking block 3 is wider than the first chamber 100 and the third chamber 102, but narrower than the second chamber 101, creating a "stepped limiting" effect in both the locked and unlocked states. That is, the elastic force of the spring 2 pushes the locking block 3 towards the third chamber 102, but because the width of the locking block 3 is greater than that of the third chamber 102, its sidewall is blocked by the wide structure of the second chamber 101, forming a mechanical self-locking mechanism to ensure the length of the insertion end 30 protruding from the fixing block 1. Furthermore, in the unlocked state, the sidewall of the locking block 3 abuts against the inner wall of the second chamber 101 adjacent to the first chamber 100, limiting the locking block 3. The feeling of resistance is fed back to the relevant personnel, indicating that the steel rod 4 is inserted correctly and no further operation is needed.

[0076] If the width of the plug end 30 is less than the width of the third chamber 102, it can be ensured that the plug end 30 can slide in the third chamber 102.

[0077] In one embodiment of this utility model, such as Figure 1 and Figure 5As shown, the locking structure 1000 also includes at least one guide pin 5, which is disposed in the receiving cavity 10, and the spring 2 is coaxially sleeved on the guide pin 5.

[0078] It should be noted that the length of spring 2 in its extended state is greater than the length of guide pin 5. The length of spring 2 in its extended state is L1, and the length of spring 2 after compression in the unlocked state is L2. Wherein, L1-L2=W (the length of the plug end 30 protruding from the fixing block 1 in the locked state).

[0079] In the above scheme, the guide pin 5 acts as a limiter for the spring 2, restricting the axial extension and retraction of the spring 2, and reducing problems such as the locking block 3 sliding and jamming, and abnormally increased operating resistance caused by the bending, twisting or lateral displacement of the spring 2.

[0080] Furthermore, an installation hole 103 may be provided on the inner wall of the first chamber 100, and one end of the guide pin 5 may be inserted into the installation hole 103. It can be understood that providing the installation hole 103 can increase the contact area between the guide pin 5 and the inner wall of the first chamber 100, thereby improving the stability of the guide pin 5.

[0081] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0082] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locking structure, characterized in that, include: The fixing block is provided with a receiving cavity, the receiving cavity has an opening communicating with the outside, and the fixing block has two coaxially arranged guide holes on its side wall; At least one spring is disposed in the receiving cavity; A locking block is arranged in the receiving cavity and is movable along the axial direction of the receiving cavity. One end of the locking block abuts against the spring, and the other end of the locking block extends to a plug-in end. A tapered hole is provided on the locking block, and the tapered hole extends from one of the guide holes toward the other guide hole. The locking block includes an unlocked state and a locked state; When in the unlocked state, the spring is in a compressed state, and the plug end is completely placed in the receiving cavity; When in the locked state, the spring is in the extended state, the plug end protrudes from the fixing block through the opening, and the projection of the tapered hole in the axial direction has at least a partial overlap with one of the guide holes.

2. The locking structure according to claim 1, characterized in that, The receiving cavity includes a first chamber, a second chamber, and a third chamber connected in sequence; The width of the second chamber is greater than the width of the first chamber and the third chamber; The width of the plug-in end is less than the width of the third chamber. The width of the locking block is greater than the width of the first chamber and the third chamber, but less than the width of the second chamber. In the locked state, the side wall of the locking block abuts against the inner wall of the second chamber adjacent to the third chamber. In the unlocked state, the side wall of the locking block abuts against the inner wall of the second chamber adjacent to the first chamber.

3. The locking structure according to claim 1, characterized in that, It also includes a steel rod, the diameter of which is smaller than the diameter of the guide hole and the small end of the tapered hole. One end of the steel rod is inserted into the tapered hole through the guide hole near the large end of the tapered hole. The steel rod is in contact with the inner wall surface of the tapered hole and can move axially relative to the tapered hole to drive the locking block to slide.

4. The locking structure according to claim 3, characterized in that, The insertion end of the steel rod is conical.

5. The locking structure according to claim 4, characterized in that, The apex angle of the tapered hole is N, where N is greater than 30° and less than or equal to 90°, and the apex angle of the insertion end of the steel rod is less than N.

6. The locking structure according to claim 1, characterized in that, The small end of the tapered hole is a cylindrical hole with a depth of b, which is greater than or equal to 1.5 mm and less than or equal to 5 mm. And / or, the thickness of the locking block along the depth direction of the cylindrical hole is B, where B is greater than 10 mm.

7. The locking structure according to claim 1, characterized in that, It also includes at least one guide pin, which is disposed within the receiving cavity, and the spring is coaxially sleeved on the guide pin.

8. The locking structure according to claim 1, characterized in that, The opening includes a side opening and a top opening, and the side opening and the top opening are connected. The fixing block is detachably connected to a cover plate, which is used to block the top opening.

9. A battery pack, characterized in that, Including the locking structure according to any one of claims 1-8, at least one of the locking structures is provided on the outer wall of the battery pack.

10. A battery cluster, characterized in that, The battery pack and frame as described in claim 9 are provided with a limiting hole at the position corresponding to the plug-in end, and the plug-in end can be inserted into the limiting hole.

Images