Positioning and mounting structure for a battery pack

Abstract

The utility model relates to battery pack installation technical field, and disclose a kind of positioning and installing structure of battery pack, including battery box and sealing plate, the inside installation of battery box has multiple groups of battery cell module, the junction of battery box and sealing plate four corners are evenly provided with locking assembly, the locking assembly includes multiple bending plate and concave plate, by setting unlocking assembly, press button can drive conical block to move up, its two side inclines extrude fitting block, make guide rod push out plate move to two sides, push out plate pushes lock rod compression spring, make lock rod separate from lock hole, realize the separation of bending plate and concave plate, complete unlocking, whole process only needs to press button one action to complete unlocking, without the aid of tool, has realized the one-key type quick disassembly unlocking of battery box and sealing plate, greatly simplified unlocking operation step, significantly improved the dismounting efficiency when battery pack overhaul, effectively shortened the overhaul time.

Description

Technical Field

[0001] This utility model relates to the field of battery pack installation technology, and in particular to a positioning and installation structure for a battery pack. Background Technology

[0002] As a core energy storage unit in the new energy field, battery packs are widely used in electric vehicles, energy storage power stations, portable electronic devices, and other scenarios. Their performance stability and safety directly determine the effectiveness of the end products. With technological advancements, battery packs are gradually evolving towards higher energy density and modularity. They are typically composed of multiple cell modules connected in series and parallel. To protect, dissipate heat, and seal the cells, these cell modules must be installed as a whole inside the battery box, forming a complete energy storage system. The battery box must ensure the stable positioning of the cell modules during transportation and use, preventing cell displacement or loosening of connections due to vibration or impact.

[0003] In existing technologies, the sealing plate of the battery pack and the battery box are mostly connected by bolts. The bolts, the sealing plate, and the threaded holes of the battery box form a locking structure. When it is necessary to inspect the cell modules inside the battery box, even if only the sealing plate needs to be opened, all the bolts on the edge must be unscrewed before the sealing plate can be removed. The whole disassembly consumes a lot of time. A single disassembly operation often requires repeatedly tightening the bolts dozens of times, which can take several minutes. In addition, in some scenarios, the inspection only needs to temporarily open the sealing plate for quick inspection (such as checking the appearance of the cell). The whole disassembly of all the bolts not only causes operational redundancy, but also accelerates the wear of the bolts and threaded holes due to frequent disassembly and assembly, affecting the long-term reliability of the connection. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a battery pack positioning and installation structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a battery pack positioning and installation structure, including a battery box and a sealing plate, wherein multiple sets of battery cell modules are installed inside the battery box, and locking components are provided at the four corners of the connection between the battery box and the sealing plate; The locking assembly includes multiple bent plates and concave plates. The multiple bent plates are located at the four corners of the sealing plate. The concave plates are all fixedly installed on the upper end of the battery box and correspond to the positions of the bent plates. Two locking rods are symmetrically provided on the inner wall of the concave plates. Locking holes are provided on both sides of the bottom of the bent plates. An unlocking assembly is provided inside the bent plates. The unlocking component includes a slide groove, inside which a conical block is slidably installed. Each of the upper two sides of the conical block has a mating block. Four guide rods are fixedly installed at the other end of each of the two mating blocks. An ejector plate is fixedly installed at the other end of each of the four guide rods. A return spring is fixedly installed on the side of the mating block near the guide rod. The other ends of the two return springs are respectively fixedly installed on the inner wall of the slide groove.

[0006] Preferably, the ejector plate is located at the inner end of the lock hole, the four guide rods pass through the side of the slide groove and are connected to the side of the ejector plate, and the inclined surfaces on both sides of the two mating blocks and the conical block are tangent to each other.

[0007] Preferably, a button is fixedly installed at the bottom of the conical block, the button passes through and extends to the lower edge of the bending plate, and a protruding ring is fixedly installed at the connection position between the button and the bending plate.

[0008] Preferably, the bottom of the bent plate has an annular groove at the connection point with the button, which is adapted to the convex ring. The convex ring is embedded in the annular groove and the cross-section of the convex ring is arc-shaped.

[0009] Preferably, the concave plate has symmetrical slots at both ends of its inner side, and both locking rods are slidably installed inside the slots. A compression spring is fixedly installed at one end of the inner side of each locking rod.

[0010] Preferably, the end of the compression spring away from the locking rod is fixedly installed at the inner end of the slot, and the side of the locking rod near the lock hole is provided as an arc-shaped protrusion.

[0011] Preferably, two grooves are symmetrically formed on both sides of the sealing plate, and pins are fixedly installed on the upper ends of the four bent plates.

[0012] Preferably, both sides of the pin are rotatably mounted on the two ends of the groove, and the bent plate is hinged to both sides of the sealing plate by the pin.

[0013] In summary, this utility model has the following beneficial effects: 1. By setting up an unlocking component, pressing the button can move the conical block upward, and the inclined surfaces on both sides of the block press against the mating block, causing the guide rod to push the ejector plate to move to both sides. The ejector plate pushes the locking rod to compress the spring, causing the locking rod to disengage from the lock hole, thus separating the bent plate from the concave plate and completing the unlocking. The entire process only requires pressing the button to complete the unlocking, without the need for tools. This achieves one-click quick-release unlocking of the battery box and the sealing plate, greatly simplifying the unlocking operation steps, significantly improving the disassembly and assembly efficiency during battery pack maintenance, and effectively shortening maintenance time. 2. By setting a convex ring and a groove at the connection between the button and the bending plate, the convex ring is embedded in the groove and has an arc-shaped cross-section, which increases the force required for accidental button touch. At the same time, the cooperation between the convex ring and the groove provides a certain limit to the button, which can effectively reduce the risk of unlocking due to accidental touch, and achieve a good anti-accidental touch effect. This ensures the stability and safety of the battery pack after installation and avoids problems such as cell module exposure and damage that may be caused by unexpected unlocking. 3. By designing one side of the locking rod as an arc-shaped protrusion, during the installation of the sealing plate, as the bending plate rotates downwards, the arc-shaped protrusion contacts and is compressed against the bottom of the bending plate. This causes the locking rod to automatically retract into the slot and compress the compression spring. When the lock hole aligns with the locking rod, the compression spring returns to its original position, pushing the locking rod into the lock hole to complete the locking. The arc-shaped protrusion structure allows the locking rod to automatically adapt to the movement trajectory of the bending plate, simplifying the installation operation and ensuring the smoothness of the locking process. At the same time, the tight fit between the locking rod and the lock hole enhances the firmness of the connection between the battery box and the sealing plate, thereby strengthening the overall structural stability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the separation structure of the sealing plate and the battery box of this utility model; Figure 3 This is a cross-sectional view of the overall front-end connection of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the bending plate of this utility model; Figure 6 This is a schematic diagram of the exploded structure of the unlocking component of this utility model.

[0015] Figure label: 1. Battery box; 2. Sealing plate; 3. Locking assembly; 301. Bending plate; 302. Concave plate; 303. Lock hole; 304. Groove; 305. Locking rod; 306. Compression spring; 41. Groove; 42. Pin; 5. Unlocking component; 501. Slide groove; 502. Conical block; 503. Button; 504. Raised ring; 505. Fitting block; 506. Guide rod; 507. Ejector plate; 508. Reset spring. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0017] The specific embodiments of this utility model are described below with reference to the accompanying drawings: Example: Reference Figures 1-6 A battery pack positioning and installation structure includes a battery box 1 and a sealing plate 2. Multiple battery cell modules are installed inside the battery box 1. Locking components 3 are provided at the four corners of the connection between the battery box 1 and the sealing plate 2. The locking assembly 3 includes multiple bent plates 301 and concave plates 302. The multiple bent plates 301 are located at the four corners of the sealing plate 2. The concave plates 302 are all fixedly installed on the upper end of the battery box 1 and correspond to the positions of the bent plates 301. Two locking rods 305 are symmetrically provided on the inner wall of the concave plates 302. Locking holes 303 are provided on both sides of the bottom of the bent plates 301. The inside of the bent plates 301 is provided with an unlocking assembly 5. The unlocking component 5 includes a slide groove 501, inside which a conical block 502 is slidably installed. On both sides of the upper end of the conical block 502, there are mating blocks 505. Four guide rods 506 are fixedly installed on the other end of each of the two mating blocks 505. An ejector plate 507 is fixedly installed on the other end of each of the four guide rods 506. A return spring 508 is fixedly installed on the side of the mating block 505 near the guide rod 506. The other ends of the two return springs 508 are respectively fixedly installed on the inner wall of the slide groove 501.

[0018] Specifically: During use, the locking rod 305 engages with the lock hole 303, achieving a stable connection between the battery box 1 and the sealing plate 2. The four corner locking components 3 are evenly distributed to ensure the balance and sealing of the connection. The unlocking component 5, through the button 503, drives the conical block 502 to move unidirectionally, thereby pushing the mating block 505. Under the action of the inclined surface of the conical block 502, the mating block 505 moves to both sides, and then pushes the two ejector plates 507 through the guide rod 506. The ejector plates 507 lock the locking rod 305. 5. The locking rod 305 is pushed out from the lock hole 303, causing the locking rod 305 to compress the compression spring 306 and retract into the slot 304. At this time, the bending plate 301 can rotate around the pin 42, realizing the separation of the sealing plate 2 from the battery box 1. Compared with the tedious operation of tightening the bolts one by one in the traditional bolt fixing method, the unlocking can be completed by simply pressing the button 503, which greatly improves the disassembly and assembly efficiency. The locking rod 305 and the lock hole 303 are engaged in a locking action, and the elasticity of the compression spring 306 can ensure the tightness of the connection and prevent loosening.

[0019] The ejector plate 507 is located at the inner end of the lock hole 303. Four guide rods 506 pass through the side of the slide groove 501 and are connected to the side of the ejector plate 507. The inclined surfaces on both sides of the two mating blocks 505 and the conical block 502 are tangent. A button 503 is fixedly installed at the bottom of the conical block 502. The button 503 passes through and extends to the lower edge of the bending plate 301. A convex ring 504 is fixedly installed at the connection position between the button 503 and the bending plate 301. A ring groove adapted to the convex ring 504 is opened at the connection between the bottom of the bending plate 301 and the button 503. The convex ring 504 is embedded in the ring groove and the cross surface of the convex ring 504 is arc-shaped. Specifically: The ejector plate 507 is located at the inner end of the lock hole 303 and works in conjunction with the guide rod 506 to ensure that the guide rod 506 can stably transmit the force of the mating block 505, ensuring that the ejector plate 507 accurately acts on the locking rod 305 in the lock hole 303, avoiding unlocking failure due to force deviation. When the conical block 502 is driven upward by the button 503, the lateral force generated by the inclined contact can evenly push the mating block 505 to move to both sides, achieving efficient force conversion and making the unlocking action more effortless. A protruding ring 504 is fixedly installed at the connection position between the button 503 and the bending plate 301, and a corresponding matching opening is provided at the bottom of the bending plate 301. The annular groove and the convex ring 504 embedded in it with an arc-shaped cross-section reduce the frictional resistance when the button 503 is pressed, while increasing the force required for accidental activation, reducing the risk of unintended unlocking and improving structural safety. The convex ring 504 is made of elastic rubber, which can well adapt to the deformation of the button 503 after it leaves the annular groove during the pressing process, and can quickly return to its original shape, avoiding the inability to recover from deformation caused by long-term compression. This ensures the stability and repeatability of the connection position between the button 503 and the bending plate 301, and ensures that the unlocking component 5 can maintain good fitting accuracy after multiple operations.

[0020] The concave plate 302 has symmetrically formed slots 304 at both ends of its inner side. Two locking rods 305 are slidably installed inside the slots 304. A compression spring 306 is fixedly installed at one end of the inner side of each locking rod 305. The end of the compression spring 306 away from the locking rod 305 is fixedly installed at the inner end of the slot 304. The side of the locking rod 305 closest to the lock hole 303 is designed as an arc-shaped protrusion. The symmetrical slots 304 at both ends of the inner side of the concave plate 302 provide stable sliding for the locking rods 305. The moving track and the compression spring 306 inside the locking rod 305 can produce elastic deformation when the locking rod 305 is subjected to force. After the external force is removed, it pushes the locking rod 305 to return to its original position, ensuring that the locking rod 305 can be accurately embedded into the lock hole 303 to achieve locking. The arc-shaped protrusion design on the side of the locking rod 305 near the lock hole 303 can reduce the frictional resistance with the bending plate 301 during the fastening process, so that the locking rod 305 can slide into the slot 304 more smoothly and improve the convenience of installation operation. Two grooves 41 are symmetrically opened on both sides of the sealing plate 2. The upper ends of the four bent plates 301 are all fixedly installed with pins 42. The pins 42 are rotatably installed on both sides of the grooves 41. The bent plates 301 are hinged to both sides of the sealing plate 2 through the pins 42. The symmetrical grooves 41 on both sides of the sealing plate 2 provide installation space for the rotation of the bent plates 301. The pins 42 at the upper end of the bent plates 301 are rotatably installed on both sides of the grooves 41, so that the bent plates 301 can rotate flexibly around the sealing plate 2 through the pins 42 to achieve engagement or disengagement with the concave plate 302.

[0021] The working principle of this utility model is as follows: During installation, the sealing plate 2 is first placed on the battery box 1, ensuring that the bent plates 301 at the four corners of the sealing plate 2 correspond one-to-one with the concave plate 302 at the upper end of the battery box 1. Then, the bent plates 301 are rotated around the pin 42, causing the bottom of the bent plates 301 to snap into the concave plate 302. During this process, the bottom of the bent plates 301 will contact and compress the arc-shaped protrusion of the locking rod 305 on the inner wall of the concave plate 302. When the locking rod 305 is subjected to pressure, it slides into the groove 304, while compressing the compression spring 306 in the groove 304. When the bending plate 301 rotates to a certain position, so that the locking hole 303 at the bottom of the bending plate 301 corresponds to the position of the locking rod 305, the compressed spring 306 will generate elastic force, pushing the locking rod 305 to reset. The end of the locking rod 305 is embedded in the locking hole 303, thereby completing the locking and fixing of the battery box 1 and the sealing plate 2, ensuring that the connection between the two is stable.

[0022] When unlocking is required for maintenance or other operations, pressing the button 503 at the bottom of the bent plate 301 causes the tapered block 502 above it to slide upwards along the groove 501. The inclined surfaces on both sides of the tapered block 502 interact with the inclined surfaces of the mating blocks 505, pushing the two mating blocks 505 to move to both sides. During the movement of the mating blocks 505, the return spring 508 is compressed. At the same time, the mating blocks 505 drive the ejector plate 507 towards the lock hole 303 via the guide rod 506. The ejector plate 507 pushes the locking rod 305, causing the locking rod 305 to disengage from the lock hole 303 and retract into the slot 304. At this time, rotating the bent plate 301 in the opposite direction allows the sealing plate 2 to be removed from the battery box 1 for operation of the internal battery cell module. After the button 503 is released, the reset spring 508 will push the locking block 505 to reset. The cone block 502 and the button 503 return to their initial positions under the reaction force of the locking block 505 and their own gravity, waiting for the next locking operation.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A battery pack positioning and mounting structure, comprising a battery box (1) and a sealing plate (2), wherein multiple sets of battery cell modules are installed inside the battery box (1), characterized in that: Locking components (3) are provided at the four corners of the connection between the battery box (1) and the sealing plate (2); The locking assembly (3) includes multiple bent plates (301) and concave plates (302). The multiple bent plates (301) are located at the four corners of the sealing plate (2). The concave plates (302) are all fixedly installed on the upper end of the battery box (1) and correspond to the position of the bent plates (301). Two locking rods (305) are symmetrically provided on the inner wall of the concave plates (302). Lock holes (303) are provided on both sides of the bottom of the bent plates (301). The inside of the bent plates (301) is provided with an unlocking assembly (5). The unlocking component (5) includes a slide groove (501), a conical block (502) is slidably installed inside the slide groove (501), and a fitting block (505) is provided on both sides of the upper end of the conical block (502). Four guide rods (506) are fixedly installed on the other end of each of the two fitting blocks (505). An ejector plate (507) is fixedly installed on the other end of each of the four guide rods (506). A reset spring (508) is fixedly installed on the side of the fitting block (505) near the guide rod (506). The other ends of the two reset springs (508) are respectively fixedly installed on the inner wall of the slide groove (501).

2. The battery pack positioning and mounting structure according to claim 1, characterized in that: The ejector plate (507) is located at the inner end of the lock hole (303), and the four guide rods (506) pass through the side of the slide groove (501) and are connected to the side of the ejector plate (507). The inclined surfaces on both sides of the two mating blocks (505) and the conical block (502) are tangent to each other.

3. The battery pack positioning and mounting structure according to claim 1, characterized in that: A button (503) is fixedly installed at the bottom of the conical block (502). The button (503) passes through and extends to the lower edge of the bending plate (301). A protruding ring (504) is fixedly installed at the connection position between the button (503) and the bending plate (301).

4. The battery pack positioning and mounting structure according to claim 3, characterized in that: The bottom of the bent plate (301) is connected to the button (503) and a ring groove is provided to match the convex ring (504). The convex ring (504) is embedded in the ring groove and the cross surface of the convex ring (504) is arc-shaped.

5. The battery pack positioning and mounting structure according to claim 1, characterized in that: The concave plate (302) has symmetrically provided holes (304) at both ends of its inner side. Two locking rods (305) are slidably installed inside the holes (304). A compression spring (306) is fixedly installed on one end of the inner side of the locking rod (305).

6. The battery pack positioning and mounting structure according to claim 5, characterized in that: The end of the compression spring (306) away from the locking rod (305) is fixedly installed on the inner end of the slot (304), and the side of the locking rod (305) near the lock hole (303) is set as an arc-shaped protrusion.

7. The battery pack positioning and mounting structure according to claim 1, characterized in that: The sealing plate (2) has two symmetrical grooves (41) on both sides, and the upper ends of the four bending plates (301) are all fixedly installed with pins (42).

8. The battery pack positioning and mounting structure according to claim 7, characterized in that: Both sides of the pin (42) are rotatably mounted on the two ends of the groove (41), and the bent plate (301) is hinged to both sides of the sealing plate (2) by the pin (42).

Images