Battery module fixing structure and battery device

Abstract

The utility model discloses a battery module fixing structure and a battery device, and relates to the technical field of batteries. The battery module comprises a plurality of battery cells, the battery module fixing structure comprises a locking rod, a first clamping plate and a second clamping plate, a boss is arranged at one end of the locking rod, a transmission part is arranged on the boss, and a locking protrusion is arranged on the side wall of the other end of the locking rod; a first through hole and a first avoiding hole communicated with the first through hole are formed in the first clamping plate, a second through hole is formed in the second clamping plate, and a plurality of battery cells are clamped between the first clamping plate and the second clamping plate. During assembly, the battery cell is clamped between the first clamping plate and the second clamping plate, and the locking rod sequentially penetrates through the second through hole and the first through hole and drives the locking bulge to sequentially penetrate through the second through hole and the first avoiding hole until the boss is propped against the outer periphery of the second through hole; the locking rod is rotated to drive the locking protrusion to be away from the first receding hole and abut against the outer periphery of the first through hole so as to achieve locking, operation is convenient, and the assembling efficiency is high.

Description

Technical Field

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

[0002] Energy conservation and environmental protection are two major themes in modern social development. In order to achieve sustainable development, energy-saving and environmentally friendly products have become the development direction of modern industrial products. Among them, energy-saving and environmentally friendly products that use batteries to provide power have received widespread attention.

[0003] In related technologies, the battery module fixing structure typically includes two clamping plates, with multiple battery cells positioned between them. After the positive and negative terminals of each cell are set according to output specifications, they are connected via flexible connecting wires. Simultaneously, using welding, the flexible connecting wires are connected to output conductive posts mounted on the casing. The entire battery module then outputs power through the conductive terminals on these posts. The two clamping plates are locked together using screws or a combination of screws and sheet metal connectors to secure the battery cells.

[0004] However, a battery module fixing structure usually has multiple screws for locking. Tightening the screws to lock the structure is cumbersome and slow, so the assembly of the battery module fixing structure is inefficient. Utility Model Content

[0005] The main purpose of this utility model is to propose a battery module fixing structure and battery device, which aims to improve the assembly efficiency of the battery module fixing structure.

[0006] To achieve the above objectives, this utility model proposes a battery module fixing structure for fixing a battery module. The battery module includes multiple battery cells. The battery module fixing structure includes a first clamping plate, a second clamping plate, and a locking rod. The first clamping plate has a first through hole and a first clearance hole communicating with the first through hole. The second clamping plate has a second through hole, and the multiple battery cells are clamped between the first clamping plate and the second clamping plate. One end of the locking rod has a boss, and the side wall of the other end of the locking rod has a locking protrusion. The locking rod is rotatably inserted through the second through hole and the first through hole in sequence. The boss abuts against the side of the periphery of the second through hole facing away from the first clamping plate. When the locking rod is passed through the first through hole, it drives the locking protrusion through the first clearance hole. When the locking rod is twisted, it drives the locking protrusion to rotate, so that the locking protrusion moves away from the first clearance hole and abuts against the side of the periphery of the first through hole facing away from the second clamping plate.

[0007] In one embodiment, a transmission part is provided on the boss.

[0008] In one embodiment, the locking protrusion has a limiting protrusion on the side facing the boss, and the periphery of the first through hole has a first limiting hole communicating with the first through hole, and the limiting protrusion engages with the inner wall of the first limiting hole.

[0009] In one embodiment, the first clamping plate is provided with at least two first clearance holes, and the locking rod is provided with at least one locking protrusion, the locking protrusion being provided corresponding to one of the first clearance holes.

[0010] In one embodiment, the locking bar is an insulating structure; or, the outer wall of the locking bar is covered with an insulating layer.

[0011] In one embodiment, the first clamping plate has a first blind hole on the side opposite to the second clamping plate, the first through hole and the first clearance hole are disposed on the bottom wall of the first blind hole, and the locking protrusion is accommodated in the first blind hole; the second clamping plate has a second blind hole on the side opposite to the first clamping plate, the second through hole is disposed on the bottom wall of the second blind hole, and the boss is accommodated in the second blind hole.

[0012] In one embodiment, the first clamping plate has a first insertion portion on the side facing the second clamping plate, and the second clamping plate has a second insertion portion on the side facing the first clamping plate. The first insertion portion and the second insertion portion are inserted into each other. One of the first insertion portion and the second insertion portion is an insertion wall, and the other is an insertion groove. The insertion wall is inserted into the inner wall of the insertion groove.

[0013] In one embodiment, the insertion wall has a curved wall section, the insertion slot has a curved groove section, and the curved wall section is inserted into the inner wall of the curved groove section.

[0014] In one embodiment, the battery module fixing structure further includes at least two heat insulation plates, which are respectively located on opposite sides of the plurality of battery cells and respectively connected to the sidewalls of the plurality of battery cells.

[0015] This utility model also proposes a battery device, which includes a battery module and a battery module fixing structure as described in any of the above embodiments, wherein the battery module is clamped within the battery module fixing structure.

[0016] The present invention proposes a battery module fixing structure for fixing a battery module, which includes multiple battery cells. The battery module fixing structure includes a first clamping plate, a second clamping plate, and a locking rod. The first clamping plate has a first through hole and a first clearance hole communicating with the first through hole. The second clamping plate has a second through hole, and the multiple battery cells are clamped between the first clamping plate and the second clamping plate. One end of the locking rod has a boss, and the side wall of the other end of the locking rod has a locking protrusion. The locking rod is rotatably inserted through the second through hole and the first through hole in sequence. The boss abuts against the side of the periphery of the second through hole facing away from the first clamping plate. When the locking rod is configured to pass through the first through hole, it drives the locking protrusion to pass through the first clearance hole. When the locking rod is configured to be twisted, it drives the locking protrusion to rotate, so that the locking protrusion moves away from the first clearance hole and abuts against the side of the periphery of the first through hole facing away from the second clamping plate. During assembly, the battery cell is first clamped between the first and second clamping plates. Then, the locking rod passes through the second and first through holes in sequence, causing the locking protrusion to pass through the second through hole and the first clearance hole in sequence until the protrusion abuts against the outer periphery of the second through hole. At this point, the locking rod is rotated to move the locking protrusion away from the first clearance hole and to the outer periphery of the first through hole until the locking protrusion abuts against the outer periphery of the first through hole. This achieves the fixing of the battery module. Compared to bolt connections, this invention achieves locking between the first clamping plate, the battery cell, and the second clamping plate with a single rotation of the locking rod, eliminating the need for multiple rotations and thus improving the assembly efficiency of the battery module fixing structure. Attached Figure Description

[0017] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 An exploded view of an embodiment of the battery module fixing structure provided by this utility model;

[0019] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the first and second clamping plates;

[0022] Figure 5 for Figure 4 A magnified view of a section at point C;

[0023] Figure 6 for Figure 1 Another structural diagram of the first and second clamping plates;

[0024] Figure 7 for Figure 6 A magnified view of a section at point D;

[0025] Figure 8 for Figure 1 A schematic diagram of two arrangement methods for multiple battery cells.

[0026] Explanation of icon numbers:

[0027] 100. Battery module fixing structure;

[0028] 1. Locking bar; 11. Boss; 11a. Transmission part; 12. Locking protrusion; 121. Limiting protrusion;

[0029] 2. First clamping plate; 2a. First through hole; 2b. First clearance hole; 2c. First limiting hole; 2d. First blind hole; 3. Second clamping plate; 3a. Second through hole; 3b. Second clearance hole; 3c. Second limiting hole; 3d. Second blind hole;

[0030] 4. Heat insulation board;

[0031] 110. Insertion wall; 111. Bending wall section; 100a. Insertion groove; 100b. Bending groove section; 100c. Fixing hole;

[0032] 200. Battery cell; 201. Fixing protrusion.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] This utility model proposes a battery module fixing structure 100 for fixing battery modules.

[0038] Please see Figure 1 , Figure 2 , Figure 3 and Figure 7 In one embodiment of this utility model, the battery module includes multiple battery cells 200, and the battery module fixing structure 100 includes a first clamping plate 2, a second clamping plate 3, and a locking rod 1. The first clamping plate 2 is provided with a first through hole 2a and a first clearance hole 2b communicating with the first through hole 2a; the second clamping plate 3 is provided with a second through hole 3a, and the multiple battery cells 200 are clamped between the first clamping plate 2 and the second clamping plate 3; one end of the locking rod 1 is provided with a boss 11, and the side wall of the other end of the locking rod 1 is provided with a lock. The locking protrusion 12 and the locking rod 1 are rotatably inserted sequentially through the second through hole 3a and the first through hole 2a. The protrusion 11 abuts against the side of the periphery of the second through hole 3a facing away from the first clamping plate 2. When the locking rod 1 is configured to pass through the first through hole 2a, it drives the locking protrusion 12 to pass through the first clearance hole 2b. When the locking rod 1 is configured to twist, it drives the locking protrusion 12 to rotate, so that the locking protrusion 12 moves away from the first clearance hole 2b and abuts against the side of the periphery of the first through hole 2a facing away from the second clamping plate 3.

[0039] In this embodiment, multiple battery cells 200 are clamped between the first clamping plate 2 and the second clamping plate 3. The multiple battery cells 200 can be arranged in an array or in multiple rows with staggered arrangement, as can be referred to. Figure 8Optionally, the first clamping plate 2 and the second clamping plate 3 clamp the opposite sides of multiple battery cells 200. Taking a cylindrical battery cell 200 as an example, the first clamping plate 2 and the second clamping plate 3 are respectively provided with semi-circular grooves or arc-shaped grooves that are adapted to the side walls of the cylindrical battery cell 200, so as to limit and fix the cylindrical battery cell 200. Preferably, the first clamping plate 2 and the second clamping plate 3 clamp the opposite ends of multiple battery cells 200. Both the first clamping plate 2 and the second clamping plate 3 are provided with fixing holes 100c. The two ends of the battery cell 200 are respectively provided with fixing protrusions 201. Each fixing protrusion 201 is inserted into the inner wall of a fixing hole 100c. The protrusions and fixing holes 100c can be square, rectangular, or other shapes to prevent the battery cell 200 from rotating relative to the first clamping plate 2 or the second clamping plate 3.

[0040] The first clamping plate 2 has a first through hole 2a and a first clearance hole 2b communicating with the first through hole 2a. The second clamping plate 3 has a second through hole 3a. One end of the locking rod 1 has a boss 11, and the side wall of the other end of the locking rod 1 has a locking protrusion 12. The diameter of the first through hole 2a is adapted to the end of the locking rod 1 near the locking protrusion 12, that is, the first through hole 2a allows the locking rod 1 to pass through but prevents the locking protrusion 12 from passing through. The shape of the first clearance hole 2b is adapted to the locking protrusion 12 to allow the locking protrusion 12 to pass through, and the first clearance hole 2b communicates with the first through hole 2a. The diameter of the second through hole 3a is smaller than the outer diameter of the boss 11 so as to abut against the boss 11 and prevent the boss 11 from passing through. The locking rod 1 is rotatably inserted into the second through hole 3a and the first through hole 2a in sequence until the boss 11 abuts against the side of the periphery of the second through hole 3a facing away from the first clamping plate 2. When the locking rod 1 is configured to pass through the first through hole 2a, it drives the locking protrusion 12 to pass through the first clearance hole 2b. When the locking rod 1 is configured to twist, it drives the locking protrusion 12 to rotate so that the locking protrusion 12 moves away from the first clearance hole 2b and abuts against the side of the periphery of the first through hole 2a facing away from the second clamping plate 3.

[0041] Optionally, the diameter of the second through hole 3a can be larger than the size of the locking rod 1 and the locking protrusion 12, that is, the second through hole 3a allows the locking rod 1 and the locking protrusion 12 to pass through together. Preferably, the diameter of the second through hole 3a is the same as that of the first through hole 2a, and a second clearance hole 3b adapted to the locking protrusion 12 is provided on the periphery of the second through hole 3a. In this way, the first clamping plate 2 and the second clamping plate 3 are provided with the same through hole and clearance hole. At this time, the locking rod 1 can be locked whether it passes from the first clamping plate 2 to the second clamping plate 3 or from the second clamping plate 3 to the first clamping plate 2, which improves the versatility and ease of operation of the battery module fixing structure 100.

[0042] During assembly, optionally, the battery cell 200 is first clamped between the first clamping plate 2 and the second clamping plate 3. Then, the locking rod 1 passes through the second through hole 3a and the first through hole 2a in sequence, which can drive the locking protrusion 12 to pass through the second through hole 3a and the first clearance hole 2b in sequence until the protrusion 11 abuts against the outer periphery of the second through hole 3a. At this time, the locking rod 1 is rotated to drive the locking protrusion 12 away from the first clearance hole 2b and rotate to the outer periphery of the first through hole 2a until the locking protrusion 12 abuts against the outer periphery of the first through hole 2a. In this way, the battery module is fixed. More preferably, when the battery cell 200 is clamped between the first clamping plate 2 and the second clamping plate 3, pressure can be applied to the first clamping plate 2 and the second clamping plate 3. After the locking rod 1 drives the locking protrusion 12 away from the first clearance hole 2b and rotates to the outer periphery of the first through hole 2a, the pressure is released. At this time, the first clamping plate 2 and the second clamping plate 3 move away from each other under the action of the rebound force after the pressure is released, and respectively abut against the boss 11 and the locking protrusion 12, thereby increasing the locking force of the locking rod 1.

[0043] Compared to bolted connections, this invention can lock the first clamping plate 2, the battery cell 200, and the second clamping plate 3 by rotating the locking rod 1 once, without the need for multiple rotations, thus improving the assembly efficiency of the battery module fixing structure 100.

[0044] Further, please refer to Figure 2 In one embodiment of this utility model, a transmission part 11a is provided on the boss 11.

[0045] In this embodiment, the transmission part 11a can be a slot or hole of the shape of a flat slot, a cross slot, or an internal hexagonal hole, for inserting tools such as screwdrivers or wrenches to facilitate twisting operations by the operator. In addition, the transmission part 11a can also have an external hexagonal protrusion for sockets or other tools to be fitted onto. The transmission part 11a can also be a knob, such as a butterfly knob or a dovetail knob, which the operator can directly grasp and twist without the need for tools, improving the convenience of assembly operations.

[0046] Further, please refer to Figure 3 and Figure 7 In one embodiment of the present invention, a limiting protrusion 121 is provided on the side of the locking protrusion 12 facing the boss 11, and a first limiting hole 2c is provided around the first through hole 2a and communicates with the first through hole 2a. The limiting protrusion 121 is engaged with the inner wall of the first limiting hole 2c.

[0047] In this embodiment, to further enhance the reliability of locking the locking rod 1 to the first clamping plate 2, a limiting protrusion 121 is provided on the side of the locking protrusion 12 facing the boss 11. Correspondingly, a first limiting hole 2c communicating with the first through hole 2a is provided around the periphery of the first through hole 2a. The shape of the first limiting hole 2c is adapted to the shape of the limiting protrusion 121, and the limiting protrusion 121 can engage with the inner wall of the first limiting hole 2c. In conjunction with the above embodiment, the second through hole 3a has the same diameter as the first through hole 2a, and a second clearance hole 3b adapted to the locking protrusion 12 is provided around the periphery of the second through hole 3a, and a second limiting hole 3c is provided around the periphery of the second through hole 3a. At this time, whether the locking rod 1 passes from the first clamping plate 2 to the second clamping plate 3 or from the second clamping plate 3 to the first clamping plate 2, it can achieve enhanced locking through the cooperation of the limiting hole and the limiting protrusion 121, thereby improving the flexibility and assembly efficiency of the battery module fixing structure 100 during assembly.

[0048] During assembly, when the battery cell 200 is clamped between the first clamping plate 2 and the second clamping plate 3, pressure is applied to the first clamping plate 2 and the second clamping plate 3. After the locking rod 1 drives the locking protrusion 12 away from the first clearance hole 2b and rotates to the outer periphery of the first through hole 2a, the pressure is released. At this time, the first clamping plate 2 and the second clamping plate 3 move away from each other under the action of the rebound force after the pressure is released, and respectively abut against the boss 11 and the locking protrusion 12. By controlling the rotation angle, the limiting protrusion 121 can be inserted into the limiting hole to improve the locking force of the locking rod 1.

[0049] Further, please refer to Figure 3 and Figure 7 In one embodiment of the present invention, the first clamping plate 2 is provided with at least two first clearance holes 2b, and the locking rod 1 is provided with at least one locking protrusion 12, the locking protrusion 12 being provided with a first clearance hole 2b.

[0050] In this embodiment, the number of first clearance holes 2b can be increased as needed. For example, please refer to... Figure 7 Two opposing first clearance holes 2b are provided around the periphery of the first through hole 2a. This provides more clearance and limiting space, increasing the success rate of the locking protrusion 12 passing through and the success rate of the limiting protrusion 121 engaging. This improves the flexibility and efficiency of assembling the battery module fixing structure 100. Furthermore, the number of first limiting holes 2c can be increased as needed. For example, please refer to [reference needed]. Figure 7 Two opposing first limiting holes 2c are provided around the periphery of the first through hole 2a, which can improve the success rate of the limiting protrusion 121 and further improve the flexibility and assembly efficiency of the battery module fixing structure 100 during assembly.

[0051] Furthermore, in one embodiment of this utility model, the locking rod 1 is an insulating structure; or, the outer wall of the locking rod 1 is covered with an insulating layer.

[0052] To couple multiple battery cells 200 into a battery module, electrical connectors are typically provided at both ends of the battery cell 200. To prevent short circuits and potential hazards caused by the connection between the locking rod 1 and the electrical connectors at both ends of the battery cell 200, the locking rod 1 in this embodiment is a rod-shaped structure made of an insulating material, such as polyimide or fiber-reinforced plastic. An insulating layer, such as a polyurethane or epoxy resin coating, can also be applied to the outer wall of the locking rod 1.

[0053] Further, please refer to Figures 4 to 7 In one embodiment of the present invention, a first blind hole 2d is provided on the side of the first clamping plate 2 facing away from the second clamping plate 3, a first through hole 2a and a first clearance hole 2b are provided on the bottom wall of the first blind hole 2d, and a locking protrusion 12 is accommodated in the first blind hole 2d; a second blind hole 3d is provided on the side of the second clamping plate 3 facing away from the first clamping plate 2, a second through hole 3a is provided on the bottom wall of the second blind hole 3d, and a boss 11 is accommodated in the second blind hole 3d.

[0054] In this embodiment, the battery module is typically used in new energy vehicles or energy storage devices. Considering that the boss 11 and locking protrusion 12 are exposed outside the first clamping plate 2 or the second clamping plate 3 and are prone to interference with other structures or being bumped or scratched, the boss 11 and locking protrusion 12 are concealed. A first blind hole 2d is provided on the side of the first clamping plate 2 facing away from the second clamping plate 3. A first through hole 2a and a first clearance hole 2b are provided on the bottom wall of the first blind hole 2d. The locking protrusion 12 is accommodated in the first blind hole 2d. A second blind hole 3d is provided on the side of the second clamping plate 3 facing away from the first clamping plate 2. A second through hole 3a is provided on the bottom wall of the second blind hole 3d. The boss 11 is accommodated in the second blind hole 3d. In this way, the boss 11 is concealed in the second blind hole 3d and the locking protrusion 12 is concealed in the first blind hole 2d, avoiding interference or scratches with other structures of new energy vehicles or energy storage devices.

[0055] Further, please refer to Figure 4 and Figure 5 In one embodiment of the present invention, the first clamping plate 2 is provided with a first insertion part on the side facing the second clamping plate 3, and the second clamping plate 3 is provided with a second insertion part on the side facing the first clamping plate 2. The first insertion part and the second insertion part are inserted into each other. One of the first insertion part and the second insertion part is an insertion wall 110, and the other is an insertion groove 100a. The insertion wall 110 is inserted into the inner wall of the insertion groove 100a.

[0056] In this embodiment, to further improve the assembly efficiency of the battery module fixing structure 100, a positioning and guiding scheme is provided. Specifically, the first clamping plate 2 has a first insertion part on the side facing the second clamping plate 3, and the second clamping plate 3 has a second insertion part on the side facing the first clamping plate 2. The first insertion part and the second insertion part are inserted into each other. By pre-setting the positions of the first insertion part and the second insertion part as well as the position of the fixing hole 100c, during assembly, it is only necessary to ensure that the first insertion part and the second insertion part are inserted to ensure that each fixing protrusion 201 is accurately aligned with each fixing hole 100c. There is no need to cumbersomely adjust the positions of the first clamping plate 2 and the second clamping plate 3 to ensure that the fixing protrusion 201 is aligned with the fixing hole 100c, thus improving the assembly efficiency. In addition, it can also guide the first clamping plate 2 and the second clamping plate 3 to move closer to each other and temporarily fix the first clamping plate 2 and the second clamping plate 3. Optionally, one of the first and second insertion portions can be configured as a columnar or wall-shaped protrusion, and the other is configured as an insertion groove 100a adapted to the columnar or wall-shaped protrusion. Preferably, one of the first and second insertion portions adopts an insertion wall 110, and the other adopts an insertion groove 100a. Compared with the columnar protrusion, the insertion wall 110 has higher bending and shear strength and can better resist shear forces parallel to the first clamping plate 2 and the second clamping plate 3.

[0057] Furthermore, please refer to Figure 5 In one embodiment of the present invention, the insertion wall 110 has a curved wall section 111, the insertion groove 100a has a curved groove section 100b, and the inner wall of the curved wall section 111 is inserted into the curved groove section 100b.

[0058] In this embodiment, considering that the shear resistance of the plug wall 110 along the width direction is lower than that along the length direction, the plug wall 110 in this embodiment is provided with a curved wall section 111. For example, the curved end of the plug wall 110 can be set as a quarter circle arc. Even if the plug wall 110 is bent at 90 degrees, the ability of the plug wall 110 to resist shear forces in all directions is improved, and the plug wall 110 is prevented from breaking.

[0059] Further, please refer to Figure 1 In one embodiment of the present invention, the battery module fixing structure 100 further includes at least two heat insulation plates 4, which are respectively located on opposite sides of the plurality of battery cells 200 and respectively connected to the side walls of the plurality of battery cells 200.

[0060] In this embodiment, the heat insulation plate 4 can be made of a material with high thermal resistance and low thermal conductivity to effectively isolate heat transfer. Examples include ceramic fiber, glass fiber, and polyurethane foam. In the event of thermal runaway in the battery module, the heat insulation plate 4 can prevent the spread of flames, improving the safety of the battery module. The heat insulation plate 4 can also protect the battery module from external environmental influences such as high temperature, low temperature, and humidity. The heat insulation plate 4 can be bonded to the side wall of the battery cell 200 using high-temperature adhesive or a special adhesive. Alternatively, it can be fixed to the opposite side walls of the first clamping plate 2 and the second clamping plate 3 using bolts, clips, or other mechanical connectors.

[0061] This utility model also proposes a battery device; please refer to [link / reference]. Figure 1 The battery device includes a battery module and a battery module fixing structure 100 as described in any of the above embodiments, wherein the battery module is clamped within the battery module fixing structure 100. The specific structure of the battery module fixing structure 100 is as described in the above embodiments. Since this battery device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery module fixing structure for fixing a battery module including a plurality of battery cells (200), characterized by, The battery module fixing structure includes: The first clamping plate (2) is provided with a first through hole (2a) and a first clearance hole (2b) communicating with the first through hole (2a); A second clamping plate (3) is provided with a second through hole (3a), and a plurality of the battery cells (200) are clamped between the first clamping plate (2) and the second clamping plate (3); and A locking rod (1) is provided with a boss (11) at one end and a locking protrusion (12) on the side wall of the other end of the locking rod (1). The locking rod (1) is rotatably inserted into the second through hole (3a) and the first through hole (2a) in sequence. The boss (11) abuts against the side of the periphery of the second through hole (3a) facing away from the first clamping plate (2). The locking bar (1) is configured to drive the locking protrusion (12) through the first through hole (2a) when it passes through the first through hole (2b), and the locking bar (1) is configured to drive the locking protrusion (12) to rotate when it is twisted, so that the locking protrusion (12) moves away from the first through hole (2b) and abuts against the side of the periphery of the first through hole (2a) facing away from the second clamping plate (3).

2. The battery module fixing structure according to claim 1, wherein The boss (11) is provided with a transmission part (11a).

3. The battery module fixing structure according to claim 1, wherein The locking protrusion (12) has a limiting protrusion (121) on the side facing the boss (11), and the periphery of the first through hole (2a) has a first limiting hole (2c) communicating with the first through hole (2a). The limiting protrusion (121) is engaged with the inner wall of the first limiting hole (2c).

4. The battery module fixing structure according to claim 1, wherein The first clamping plate (2) is provided with at least two first clearance holes (2b), and the locking rod (1) is provided with at least one locking protrusion (12), the locking protrusion (12) being provided with one first clearance hole (2b).

5. The battery module fixing structure according to claim 1, wherein The locking rod (1) has an insulating structure; Alternatively, the outer wall of the locking rod (1) may be covered with an insulating layer.

6. The battery module fixing structure according to claim 1, wherein The first clamping plate (2) has a first blind hole (2d) on the side opposite to the second clamping plate (3), the first through hole (2a) and the first clearance hole (2b) are provided on the bottom wall of the first blind hole (2d), and the locking protrusion (12) is accommodated in the first blind hole (2d). The second clamping plate (3) has a second blind hole (3d) on the side opposite to the first clamping plate (2), the second through hole (3a) is provided on the bottom wall of the second blind hole (3d), and the boss (11) is accommodated in the second blind hole (3d).

7. The battery module fixing structure according to claim 1, wherein The first clamping plate (2) has a first insertion part on the side facing the second clamping plate (3), and the second clamping plate (3) has a second insertion part on the side facing the first clamping plate (2). The first insertion part and the second insertion part are inserted into each other. In the first insertion part and the second insertion part, one of them is an insertion wall (110) and the other is an insertion groove (100a), and the insertion wall (110) is inserted into the inner wall of the insertion groove (100a).

8. The battery module fixing structure according to claim 7, wherein The plug-in wall (110) has a curved wall segment (111), the plug-in groove (100a) has a curved groove segment (100b), and the curved wall segment (111) is plugged with the inner wall of the curved groove segment (100b).

9. The battery module fixing structure according to claim 1, wherein The battery module fixing structure further comprises at least two heat insulation plates (4), and the at least two heat insulation plates (4) are respectively arranged on opposite sides of the plurality of battery cells (200) and connected with the side walls of the plurality of battery cells (200).

10. A battery device characterized by comprising: The battery device comprises a battery module and the battery module fixing structure according to any one of claims 1 to 9, and the battery module is clamped in the battery module fixing structure.

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