Center positioning assembly for battery pack shell

Abstract

The utility model discloses a center positioning assembly for a battery pack shell, which comprises a bottom plate, a base, a spring positioning pin, two groups of synchronous ejection assemblies and a driving assembly, the base is arranged on the bottom plate, the spring positioning pin is arranged on the bottom plate, and the center positioning of the battery pack shell in the Y-axis direction is realized by utilizing the spring positioning pin; the two sets of synchronous ejection assemblies are arranged on the base, the driving assembly is used for controlling the synchronous ejection assemblies to stretch out and retract, and the two sets of synchronous ejection assemblies are used for achieving center positioning of the battery pack shell in the X-axis direction. According to the utility model, the spring positioning pin is matched with the synchronous ejection component, the spring positioning pin is firstly used for positioning in the Y-axis direction, and then the synchronous ejection component is used for positioning in the X-axis direction, so that a battery pack shell is positioned in the middle, and the size of a slag ladle sprue cut by machining is further ensured.

Description

Technical Field

[0001] The utility model relates to the field of die casting mold processing, in particular to a center positioning component for a battery pack shell Background Art

[0002] The battery pack shell is a rectangular open structure with many reinforcing ribs and heat sinks on its surface. During die-casting, it needs to be cooperated with the slider structure to perform die-casting of the feature parts. The slider structure will increase the tolerance of the battery pack shell, and the outer surface structure is complex. Therefore, it is impossible to position it through external features. If external feature parts are used for positioning, then during processing, the single-side error of the battery pack shell will be large and cannot meet production needs. There is no undercut structure inside, and it is obtained by opening the mold with an integral mold, with a small tolerance. Therefore, in order to ensure the processing quality, internal features are used for positioning, and a center positioning component for the battery pack shell is urgently needed. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the main purpose of the utility model is to overcome the shortcomings of the prior art, and discloses a center positioning assembly for a battery pack shell, including a bottom plate, a base, a spring positioning pin, two groups of synchronous ejection assemblies and a drive assembly, the base is arranged on the bottom plate, the spring positioning pin is arranged on the bottom plate, and the spring positioning pin is used to realize the center positioning of the battery pack shell in the Y-axis direction; the two groups of the synchronous ejection assemblies are arranged on the base, the driving assembly is used to control the extension and retraction of the synchronous ejection assemblies, and the two groups of the synchronous ejection assemblies are used to realize the center positioning of the battery pack shell in the X-axis direction.

[0004] Further, the synchronous ejection assembly includes a fixed seat, a driving block, a spring, a driving rod and a push rod. A mounting cavity is arranged in the middle of the base, and a guide hole matching the push rod is arranged in the X-axis direction of the base. The guide hole is communicated with the mounting cavity. The push rod is slidably arranged in the guide hole. The fixed seat is arranged in the mounting cavity. The driving block is slidably connected with the fixed seat. The spring acts on the fixed seat and the driving block, and the spring is used to provide an upward thrust for the driving block. A first inclined surface and a second inclined surface matching each other are arranged on one end of the push rod and the driving block. The first inclined surface is slidably connected with the second inclined surface. The driving rod is arranged on the driving block, and the upper end of the driving rod protrudes from the base.

[0005] Further, the fixed seat includes a lower end plate, the upper surface of the lower end plate is convexly provided with a guide cylinder that cooperates with the driving block, the lower surface of the driving block is concavely provided with an accommodating cavity, the driving block is arranged in the guide cylinder, so that the driving block and the guide cylinder are slidably connected; the spring is arranged in the accommodating cavity, and the two ends of the spring act on the lower end plate and the bottom of the accommodating cavity respectively.

[0006] Furthermore, a slot is recessed on the top of the driving block, and the driving rod is inserted into the slot and fixed.

[0007] Furthermore, the synchronous ejection assembly also includes an upper end plate, a guide hole cooperating with the drive rod is arranged in the middle of the upper end plate, the upper end plate is fixed on the base, and the drive rod is guided to move up and down by the guide hole.

[0008] Furthermore, a screw hole is provided on the upper end plate, and a limiting screw is threadably matched with the screw hole.

[0009] Furthermore, three fixed support columns and one support cylinder are arranged on the base, and the fixed support columns and the support cylinder are distributed in a square shape.

[0010] Furthermore, three corner positioning blocks are arranged on the base, and the battery pack housing is roughly positioned by using the corner positioning blocks.

[0011] Furthermore, guide blocks are arranged on both sides of the base, and chamfers are arranged on the guide blocks, and the guide blocks are used to roughly position the battery pack shell in the Y-axis direction.

[0012] Furthermore, the driving assembly includes a cylinder, a connecting seat, two mounting seats, two groups of connecting parts and two pressure plates. The cylinder is arranged below the base and located in the middle of the two groups of synchronous ejection assemblies. The two mounting seats are arranged on both sides of the cylinder and located on the upper surface of the base. The connecting seat is arranged on the cylinder. One end of the pressure plate is hinged to the connecting seat, and the two ends of the connecting part are respectively hinged to the mounting seat and the pressure plate. When the cylinder ejects upward, the pressure plate expands to both sides and presses downward; when the cylinder contracts, the pressure plate contracts toward the middle.

[0013] Beneficial effects achieved by the utility model:

[0014] The utility model cooperates with the spring positioning pin and the synchronous ejection assembly, firstly performs positioning in the Y-axis direction through the spring positioning pin, and then performs positioning in the X-axis direction through the synchronous ejection assembly, so that the battery pack shell is centrally positioned, thereby ensuring the size of the slag ladle pouring port cut out by machining. The fixed seat and the driving block are connected by sleeve sliding, and an installation cavity is set in the driving block to accommodate and guide the compression and expansion of the spring, and cooperates with the guide hole of the upper end cover and the driving rod to jointly guide the driving block to move up and down stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a center positioning component for a battery pack housing of the utility model;

[0016] Figure 2 for Figure 1 A top view of

[0017] Figure 3 for Figure 2 Middle AA section view;

[0018] Figure 4 for Figure 2 Middle BB section view;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the synchronous ejection component;

[0020] Figure 6 It is a cross-sectional view of the synchronous ejection component;

[0021] Figure 7 is a schematic diagram of the structure of the ejector rod;

[0022] Figure 8 It is a schematic diagram of the structure of the driver block;

[0023] Fig. 9 is a schematic diagram of the structure of the drive component;

[0024] Fig.10 This is a schematic diagram of a use state of a center positioning assembly for a battery pack housing according to the utility model;

[0025] The reference numerals are as follows:

[0026] 1. Bottom plate, 2. Base, 3. Spring locating pin, 4. Synchronous ejector assembly, 5. Drive assembly, 6. Corner locating piece, 7. Guide block, 8. Fixed support column, 9. Support cylinder, 41. Fixed seat, 42. Drive block, 43. Spring, 44. Drive rod, 45. Ejector rod, 46. Upper end plate, 411. Lower end plate, 412. Guide cylinder, 421. Accommodating cavity, 422. Slot, 451. First inclined plane, 452. Second inclined plane, 453. Slider, 454. Slide groove, 461. Limit screw, 51. Oil cylinder, 52. Connecting seat, 53. Mounting seat, 54. Connector, 55. Press plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] A center positioning assembly for a battery pack housing, such as Figure 1-Figure 10 As shown, it includes a bottom plate 1, a base 2, a spring locating pin 3, two sets of synchronous ejection components 4 and a driving component 5. The base 2 is arranged on the bottom plate 1, the spring locating pin 3 is arranged on the bottom plate 1, and the spring locating pin 3 is used to realize the center positioning of the battery pack shell in the Y-axis direction; the two sets of synchronous ejection components 4 are arranged on the base 2, and the driving component 5 is used to control the extension and retraction of the synchronous ejection components 4, and the two sets of synchronous ejection components 4 are used to realize the center positioning of the battery pack shell in the X-axis direction.

[0029] The synchronous ejection assembly 4 includes a fixed seat 41, a driving block 42, a spring 43, a driving rod 44 and a push rod 45. A mounting cavity is arranged in the middle of the base 2, and a guide hole cooperating with the push rod is arranged in the X-axis direction of the base 2. The guide hole is communicated with the mounting cavity. The push rod 45 is slidably arranged in the guide hole. The fixed seat 41 is arranged in the mounting cavity. The driving block 42 is slidably connected with the fixed seat 41. The spring 43 acts on the fixed seat 41 and the driving block 42. The spring 43 is used to provide an upward thrust for the driving block 42, so that the driving block 42 can move upward under the force of the spring 43. One end of the push rod 45 and the driving block 42 are provided with a first inclined surface 451 and a second inclined surface 452 that cooperate with each other; and the first inclined surface 451 and the second inclined surface 452 are slidably connected; that is, a slider 453 is provided on the first inclined surface 451, and a slide groove 454 that cooperates with the slider 453 is provided on the second inclined surface 452; or a slide groove 454 is provided on the first inclined surface 451, and a slider 453 that cooperates with it is provided on the second inclined surface 452; so that when the driving block 42 moves upward, the push rods 45 on both sides move outward; conversely, when 42 moves downward, the push rods 45 move toward the driving block 42. The driving rod 44 is provided on the driving block 42, and the upper end of the driving rod 44 protrudes from the base 2. The driving assembly 5 controls the driving rod 44 to move the driving block 42 downward, and controls the driving block 42 to move upward through the spring 43, thereby realizing the contraction and extension of the push rod 45.

[0030] In the above embodiment, if Figure 1-Figure 10 As shown, the fixed seat 41 includes a lower end plate 411, the upper surface of the lower end plate 411 is convexly provided with a guide cylinder 412 that cooperates with the driving block 42, the lower surface of the driving block 42 is concavely provided with a accommodating cavity 421, and the driving block 42 is arranged in the guide cylinder 412, so that the driving block 42 is slidably connected with the guide cylinder 412; the spring 43 is arranged in the accommodating cavity 421, and the two ends of the spring 43 act on the bottom of the lower end plate 411 and the accommodating cavity 421 respectively; in the above structure, the driving block 42 is guided to move by the guide tube 412, and the spring 43 is guided to be compressed and released by the accommodating cavity 421.

[0031] In one embodiment, if Figure 1-Figure 10 As shown, a slot 422 is recessed on the top of the driving block 42, and the driving rod 44 is inserted into the slot 422 and fixed. Specifically, a connecting hole is provided at the bottom of the slot 422, and a screw hole is provided at the bottom of the driving rod 44. The screw passes through the connecting hole from the accommodating cavity 421 and is connected to the screw hole to realize the connection between the driving rod 44 and the driving block 42.

[0032] In one embodiment, if Figure 1-Figure 10 As shown, the synchronous ejection assembly 4 also includes an upper end plate 46, a guide hole matching the driving rod 44 is arranged in the middle of the upper end plate 46, and the upper end plate 46 is fixed on the base 2, and the guide hole is used to guide the driving rod 44 to move up and down.

[0033] In the above embodiment, if Figure 1-Figure 10 As shown, a limit screw 461 is provided on the upper end plate 46; specifically, a screw hole matching the limit screw 461 is provided on the upper end plate 446, and the top height position is adjusted by rotating the limit screw 461 to limit the downward position of the driving assembly 5, that is, the lower limit position of the driving rod 44.

[0034] In one embodiment, if Figure 1-Figure 10 As shown, three fixed support columns 8 and one support cylinder 9 are arranged on the base 2, and the fixed support columns and the support cylinder are distributed in a square shape. The three fixed support columns 8 are of fixed height, and the support height of one support cylinder 9 is adjustable. The battery pack shell is positioned at three points, and finally further supported by the support cylinder 9. It can better support the battery pack shell with adaptability.

[0035] In one embodiment, if Figure 1-Figure 10 As shown, in order to facilitate the battery pack shell to cooperate with the spring positioning pin 3, three corner positioning members 6 are provided on the bottom plate 1, and the battery pack shell is roughly positioned by the three corner positioning members 6.

[0036] In one embodiment, if Figure 1-Figure 10 As shown, side guide plates 5 are provided on both sides of the base 2, and the battery pack shell is roughly positioned in the Y-axis direction through the side guide blocks 7. The battery pack shell is roughly limited by the above structure, and when inserted, the hole on the battery pack shell is more convenient to insert the spring positioning pin 3 for positioning.

[0037] In one embodiment, if Figure 1-Figure 10 As shown, the driving assembly 5 includes a cylinder 51, a connecting seat 52, two mounting seats 53, two groups of connecting members 54 and two pressing plates 55. The cylinder 51 is arranged below the base 2 and is located in the middle of the two groups of synchronous ejection assemblies 4. The two mounting seats 53 are arranged on both sides of the cylinder 51 and are located on the upper surface of the base 2. The connecting seat 52 is arranged on the cylinder 51. One end of the pressing plate 55 is hinged to the connecting seat 52. The two ends of the connecting member 54 are hinged to the mounting seat 53 and the pressing plate 55 respectively. When the cylinder 51 ejects upward, the pressing plate 55 expands to both sides and presses downward. When the cylinder 51 contracts, the pressing plate 55 contracts toward the middle. Through the above structure, one cylinder 51 can be used to synchronously control the movement of the pressing plate 55, that is, to synchronously control the two groups of synchronous ejection assemblies 4.

[0038] In one embodiment, if Figure 1-Figure 10 As shown, the top of the spring locating pin 3 is a diamond pin. The top of the diamond is a pointed top structure. After being subjected to force, the spring locating pin 3 will move axially downward. Therefore, when the battery pack shell is adjusted in the X-axis direction, it will be ejected or moved downward with the movement of the battery pack shell.

[0039] When the utility model is used, Figure 1-Figure 10As shown, the oil cylinder 51 drives the pressure plate 55 to control the driving rod 44 to press the driving block 42 downward. In this process, the spring 43 is compressed, and the push rod 45 moves toward the fixed seat 41 due to the cooperation of the first inclined surface 451 and the second inclined surface 452, and the battery pack shell is covered on it, so that the spring positioning pin 3 is inserted into the hole of the battery pack shell to perform positioning in the Y-axis direction; the battery pack shell is supported on three fixed support points 23; then the oil cylinder 51 moves downward, so that the pressure plate 55 is reset, and the driving block 42 moves upward due to the restoring force of the spring 43, and then drives the push rod 45 to move outward to adjust the position of the battery pack shell in the X-axis direction to position it in the center; after completion, the support cylinder 9 is lifted up to complete the center positioning of the battery pack shell. Finally, the battery pack shell is pressed against the positioning assembly by the clamping mechanism to process the battery pack shell.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should be included in the scope of protection of the claims of the present invention.

Claims

1. A center positioning assembly for a battery pack housing, characterized in that: It includes a bottom plate, a base, a spring locating pin, two groups of synchronous ejection components and a driving component. The base is arranged on the bottom plate, the spring locating pin is arranged on the bottom plate, and the spring locating pin is used to realize the center positioning of the battery pack shell in the Y-axis direction; the two groups of the synchronous ejection components are arranged on the base, the driving component is used to control the extension and retraction of the synchronous ejection components, and the two groups of the synchronous ejection components are used to realize the center positioning of the battery pack shell in the X-axis direction.

2. A center positioning assembly for a battery pack housing according to claim 1, characterized in that: The synchronous ejection assembly includes a fixed seat, a driving block, a spring, a driving rod and a push rod. A mounting cavity is arranged in the middle of the base, and a guide hole matching with the push rod is arranged in the X-axis direction of the base. The guide hole is communicated with the mounting cavity. The push rod is slidably arranged in the guide hole. The fixed seat is arranged in the mounting cavity. The driving block is slidably connected with the fixed seat. The spring acts on the fixed seat and the driving block, and the spring is used to provide an upward thrust for the driving block. A first inclined surface and a second inclined surface that cooperate with each other are arranged on one end of the push rod and the driving block, the first inclined surface is slidably connected with the second inclined surface, the driving rod is arranged on the driving block, and the upper end of the driving rod protrudes from the base.

3. A center positioning assembly for a battery pack housing according to claim 2, characterized in that: The fixed seat includes a lower end plate, the upper surface of the lower end plate is convexly provided with a guide cylinder that cooperates with the driving block, the lower surface of the driving block is concavely provided with a accommodating cavity, the driving block is arranged in the guide cylinder, so that the driving block and the guide cylinder are slidably connected; the spring is arranged in the accommodating cavity, and the two ends of the spring act on the lower end plate and the bottom of the accommodating cavity respectively.

4. A center positioning assembly for a battery pack housing according to claim 2, characterized in that: A slot is recessed on the top of the driving block, and the driving rod is inserted into and fixed in the slot.

5. A center positioning assembly for a battery pack housing according to claim 2, characterized in that: The synchronous ejection assembly also includes an upper end plate, a guide hole cooperating with the drive rod is arranged in the middle of the upper end plate, the upper end plate is fixed on the base, and the guide hole is used to guide the drive rod to move up and down.

6. A center positioning assembly for a battery pack housing according to claim 5, characterized in that: The upper end plate is provided with a screw hole, and the limiting screw is threadably matched with the screw hole.

7. A center positioning assembly for a battery pack housing according to claim 1, characterized in that: Three fixed support columns and one support cylinder are arranged on the base, and the fixed support columns and the support cylinder are distributed in a square shape.

8. A center positioning assembly for a battery pack housing according to claim 1, characterized in that: Three corner positioning blocks are arranged on the base, and the battery pack housing is roughly positioned by using the corner positioning blocks.

9. A center positioning assembly for a battery pack housing according to claim 1, characterized in that: Guide blocks are arranged on both sides of the base, and chamfers are arranged on the guide blocks, and the battery pack shell is roughly positioned in the Y-axis direction by using the guide blocks.

10. A center positioning assembly for a battery pack housing according to claim 1, characterized in that: The driving assembly includes a cylinder, a connecting seat, two mounting seats, two groups of connecting parts and two pressure plates. The cylinder is arranged below the base and located in the middle of the two groups of synchronous ejection assemblies. The two mounting seats are arranged on both sides of the cylinder and located on the upper surface of the base. The connecting seat is arranged on the cylinder. One end of the pressure plate is hinged to the connecting seat, and the two ends of the connecting part are respectively hinged to the mounting seat and the pressure plate. When the cylinder is ejected upward, the pressure plate is expanded to both sides and pressed downward; when the cylinder is contracted, the pressure plate is contracted to the middle.

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