Stacking jig for battery pack and device thereof

Abstract

The utility model provides a stacking jig for a battery pack and a device thereof. The stacking jig for the battery pack comprises a bottom plate, a bearing plate, a pressure bearing mechanism and a pushing mechanism. The bearing plate, the pressure-bearing mechanism and the pushing mechanism are all mounted on the bottom plate, a stacking area is defined by the bearing plate, the pressure-bearing mechanism and the pushing mechanism, and the stacking area is used for placing a battery module. The stacking jig for the battery pack further comprises a check block and a limiting assembly. The stop block is located in the compression direction of the extrusion plate of the pushing mechanism and connected with the bearing plate. The limiting assembly is located below the check block and fixedly connected to the bearing plate, and a limiting part of the limiting assembly extends and protrudes out of the top face of the bearing plate and elastically abuts against the extrusion plate of the pushing mechanism. The limiting part of the stacking jig for the battery pack can play a stable, reliable and elastic buffering role on the extrusion plate. Wherein the stop block can stop the extrusion plate from continuously applying pressure to the battery module, so that an effective and reliable over-pressure protection effect can be achieved for the battery module, and the quality of a product is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery pack production, and in particular to a stacking jig and device for battery packs. Background Art

[0002] In the actual production process of lithium battery PACK, when the lithium battery PACK goes through the module assembly process, multiple single cells need to be assembled into a battery module. Among them, the module assembly process uses a tool or equipment with stacking and extrusion to complete the stacking and extrusion operations of multiple single cells, and most of the tooling with stacking and extrusion is semi-automatic integrated equipment, or a tooling with only a single stacking function or a tooling with only a single extrusion function.

[0003] Prior art, such as Chinese patent document CN209183665U, discloses a lithium battery module stacking tool, including a rectangular frame with an upper opening, the frame having a bottom plate and a plurality of side plates, the bottom plate and the side plates forming a module accommodation cavity, the frame accommodation cavity is provided with a side push plate pushed by a side push cylinder and a main push plate pushed by a main push cylinder. Although the tool effectively reduces positioning errors by using side push cylinders and main push cylinders instead of manual operations, and quickly and accurately stacks multiple modules together to form a module, the tool is limited by the fact that there must be an air source supply device at the application site, otherwise the tool cannot be used normally. At the same time, the tool also lacks a device or structure for overpressure protection of the battery module, which makes the battery module at risk of excessive extrusion (overpressure), which may cause abnormal stacking of the battery module or product quality defects.

[0004] For another example, Chinese patent document CN219180702U discloses a lithium battery module stacking tool, including a mounting panel, two first side extrusion toolings, two second side extrusion toolings and a sliding assembly, wherein a battery cell module is supported on the mounting panel. By setting a sliding baffle, when in use, two rows of battery cell modules are placed on the mounting panel respectively, and the two rows of battery cell modules are respectively located on opposite sides of the sliding baffle, wherein the sliding baffle is shielded between the two rows of battery cell modules, and then the two rows of battery cell modules are squeezed from four sides by adjusting the first side extrusion tooling and the second side extrusion tooling, wherein since the sliding baffle is shielded between the two rows of battery cell modules, the two rows of battery cell modules can be prevented from directly contacting each other, resulting in poor extrusion stacking effect and damage to the battery cell modules due to mutual extrusion, and the stacking tooling is convenient for the simultaneous stacking of two rows of battery cell modules, with high stacking efficiency and convenient use. Although the above disclosed lithium battery module stacking tool can complete the alignment and stacking of two rows of battery modules, the overall structure is relatively complex, and no reliable device or structure for overvoltage protection of the battery module is provided.

[0005] Therefore, there is an urgent need for a lithium battery module stacking tool or equipment with an overvoltage protection structure. Utility Model Content

[0006] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a stacking fixture and device for a battery pack having an overvoltage protection structure.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A stacking jig for a battery pack comprises a bottom plate, a bearing plate, a pressure mechanism and a pushing mechanism, wherein the bearing plate, the pressure mechanism and the pushing mechanism are all mounted on the bottom plate, a stacking area is formed between the bearing plate, the pressure mechanism and the pushing mechanism, and the stacking area is used to place a battery module. The stacking jig for the battery pack further comprises:

[0009] A stopper, the stopper is located in the compression direction of the extrusion plate of the pushing mechanism and is connected to the bearing plate;

[0010] A limiting assembly is located below the stopper and fixedly connected to the supporting plate. A limiting portion of the limiting assembly extends and protrudes from the top surface of the supporting plate, and the limiting portion elastically abuts against the extrusion plate of the pushing mechanism.

[0011] In one embodiment, the pushing mechanism includes an L-shaped guide sliding base, an extrusion plate and a threaded transmission rod; the bottom of the extrusion plate is slidably connected to the L-shaped guide sliding base, one end of the threaded transmission rod is connected to the extrusion plate, the threaded transmission rod is threadedly rotationally connected to the L-shaped guide sliding base, and the other end of the threaded transmission rod is provided with a rotating connection part.

[0012] In one of the embodiments, a sliding installation groove is formed at one end of the supporting plate adjacent to the pushing mechanism, and the sliding installation groove is used to position the limiting component.

[0013] In one embodiment, the limiting assembly includes a guide column, a spring member and a limiting sleeve; one end of the guide column is fixedly connected to the supporting plate, and the spring member and the limiting sleeve are movably sleeved on the other end of the guide column in sequence; the limiting sleeve forms a limiting portion, the limiting portion extends and protrudes from the top surface of the supporting plate, and the limiting portion elastically abuts against the extrusion plate of the pushing mechanism.

[0014] In one embodiment, an adjusting screw is mounted on the stopper, and the adjusting screw is arranged toward the extrusion plate; and / or,

[0015] The bottom plate includes a first handle portion and a second handle portion, and the first handle portion and the second handle portion are respectively welded to the top surface of the bottom plate.

[0016] In one of the embodiments, the stacking jig for the battery pack further includes a positioning assembly, which is disposed around the stacking area and fixedly connected to the supporting plate.

[0017] In one embodiment, the positioning assembly includes a first positioning block and a second positioning block; the first positioning block is perpendicular to the second positioning block, and the first positioning block and the second positioning block are both in the shape of long strips.

[0018] In one embodiment, the pressure-bearing mechanism and the pushing mechanism are arranged opposite to each other, and the pressure-bearing mechanism and the pushing mechanism are respectively located on both sides of the stacking area, and the pressure-bearing mechanism forms a pressure-bearing part, which abuts against the side of the battery module away from the extrusion plate.

[0019] In one of the embodiments, the stacking jig for the battery pack further includes a pressure sensor, which is embedded in the pressure-bearing portion and is used to detect the squeezing force applied to the battery module.

[0020] A stacking device for a battery pack comprises the stacking jig for a battery pack as described in any of the above embodiments, the stacking device for the battery pack also comprises a baler, the supporting plate is further formed with a baling space connected to the stacking area, the baler is used to install a fastening steel belt to the periphery of the battery module through the baling space.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] 1. The limit part elastically abuts against the extrusion plate, so that before the battery module reaches the critical point of overpressure, the limit part can play a stable and reliable elastic buffering role on the extrusion plate, thereby reserving sufficient reaction time for the user or the driving part, and immediately stopping the driving of the extrusion plate to continue moving and applying pressure.

[0023] 2. When the extrusion plate breaks through the elastic buffer limit of the limiting part, the block is located in the compression direction of the extrusion plate, so that the block can prevent the extrusion plate from continuing to apply pressure to the battery module, that is, the extrusion plate stops moving and applying pressure, thereby providing effective and reliable overpressure protection for the battery module and ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of a stacking fixture for battery packs in one embodiment;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of a stacking fixture for a battery pack shown;

[0027] Figure 3 for Figure 1 A schematic diagram of a partial structure of a stacking fixture for a battery pack shown;

[0028] Figure 4 for Figure 1 A schematic diagram of a partial structure of a stacking fixture for a battery pack shown;

[0029] Figure numerals: stacking fixture 10 for battery pack; bottom plate 100; first handle portion 110; second handle portion 120; supporting plate 200; stacking area 201; sliding mounting groove 202; pressure-bearing mechanism 300; pressure-bearing portion 310; pushing mechanism 400; L-shaped guide sliding base 410; extrusion plate 420; threaded transmission rod 430; rotating connecting portion 4310; stop block 500; adjusting screw 510; limiting assembly 600; guide column 610; spring member 620; limiting sleeve 630; limiting portion 6310; positioning assembly 700; first positioning block 710; second positioning block 720; pressure sensor 800. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] See also Figures 1 to 4 In order to better understand the stacking jig 10 for the battery pack of the present disclosure, the stacking jig 10 for the battery pack is further explained below:

[0034] A stacking jig 10 for a battery pack in one embodiment includes a base plate 100, a load-bearing plate 200, a pressure-bearing mechanism 300, and a pushing mechanism 400. The load-bearing plate 200, the pressure-bearing mechanism 300, and the pushing mechanism 400 are all installed on the base plate 100, and a stacking area 201 is formed between the load-bearing plate 200, the pressure-bearing mechanism 300, and the pushing mechanism 400, and the stacking area 201 is used to place battery modules. The stacking jig 10 for the battery pack also includes a stopper 500 and a limiting assembly 600. The stopper 500 is located in the compression direction of the extrusion plate 420 of the pushing mechanism 400, and is connected to the load-bearing plate 200. The limiting assembly 600 is located below the stopper 500 and is fixedly connected to the supporting plate 200 . The limiting portion 6310 of the limiting assembly 600 extends and protrudes from the top surface of the supporting plate 200 . The limiting portion 6310 elastically abuts against the extrusion plate 420 of the pushing mechanism 400 .

[0035] In this embodiment, the limit portion 6310 elastically abuts against the extrusion plate 420, so that before the battery module reaches the critical point of overpressure, the limit portion 6310 can play a stable and reliable elastic buffering role for the extrusion plate 420, thereby reserving sufficient reaction time for the user or the driving component and immediately stopping driving the extrusion plate 420 to continue moving and applying pressure.

[0036] Furthermore, when the extrusion plate 420 breaks through the elastic buffering limit of the limiting portion 6310, the block 500 is located in the compression direction of the extrusion plate 420, so that the block 500 can prevent the extrusion plate 420 from continuing to apply pressure to the battery module, that is, the extrusion plate 420 stops moving and applying pressure, thereby providing effective and reliable over-pressure protection for the battery module and ensuring the quality of the product.

[0037] like Figure 1 to Figure 2As shown, in one embodiment, the pushing mechanism 400 includes an L-shaped guide sliding base 410, an extrusion plate 420 and a threaded transmission rod 430; the bottom of the extrusion plate 420 is slidably connected to the L-shaped guide sliding base 410, one end of the threaded transmission rod 430 is connected to the extrusion plate 420, the threaded transmission rod 430 is threadedly rotatably connected to the L-shaped guide sliding base 410, and the other end of the threaded transmission rod 430 is provided with a rotating connection part 4310. It can be understood that the rotating connection part 4310 is an outer hexagonal shape, which is convenient for connecting with the power output end of the electric gun; specifically, the user manually controls the power output end of the electric gun to act on the rotating connection part 4310, so that the rotating connection part 4310 rotates, thereby driving one end of the threaded transmission rod 430 to push the extrusion plate 420 to slide and extrude toward the battery module.

[0038] It is understood that in other embodiments, the threaded transmission rod 430 can be configured as a sliding telescopic rod, one end of which is connected to the extrusion plate 420, and the other end of which is connected to the power output end of the cylinder, or the other end of which is connected to the power output end of the hydraulic cylinder. Using a cylinder or a hydraulic cylinder as a driving member to provide a reliable driving force for pushing the extrusion plate 420 enables the stacking jig 10 for battery packs to simultaneously adapt to application sites with air sources or air supply equipment, thereby effectively broadening the scope of application of the stacking jig 10 for battery packs.

[0039] Furthermore, the elastic contact of the limiting portion 6310 against the extrusion plate 420 and the rigid limiting of the stopper 500 effectively prevent the battery module from being over-pressurized, thereby causing abnormal stacking of the battery module or product quality defects.

[0040] like Figures 2 to 3 As shown, in one embodiment, a sliding installation groove 202 is provided at one end of the carrier plate 200 adjacent to the pushing mechanism 400, and the sliding installation groove 202 is used to position the limiting assembly 600. It can be understood that the sliding installation groove 202 is used to position the limiting assembly 600, so that the space structure of the stacking fixture 10 for the battery pack is more compact and reasonable.

[0041] like Figures 1 to 4As shown, in one embodiment, the limiting assembly 600 includes a guide column 610, a spring member 620 and a limiting sleeve 630; one end of the guide column 610 is fixedly connected to the bearing plate 200, and the spring member 620 and the limiting sleeve 630 are movably sleeved on the other end of the guide column 610 in sequence; the limiting sleeve 630 forms a limiting portion 6310, the limiting portion 6310 extends and protrudes from the top surface of the bearing plate 200, and the limiting portion 6310 elastically abuts against the extrusion plate 420 of the pushing mechanism 400. In one embodiment, an adjusting screw 510 is installed on the stopper 500, and the adjusting screw 510 is arranged toward the extrusion plate 420. It can be understood that when the limiting portion 6310 abuts against the extrusion plate 420, the limiting sleeve 630 will be forced to compress the spring member 620, so that the limiting portion 6310 gives the extrusion plate 420 a buffering reaction force, thereby preventing the extrusion plate 420 from causing the risk of overpressure on the battery module; secondly, by adjusting the height of the adjusting screw 510 protruding from the side of the block 500, the extrusion limit of the extrusion plate 420 can be controlled, that is, when the extrusion plate 420 contacts the adjusting screw 510, the extrusion plate 420 cannot continue to slide and extrude.

[0042] Specifically, the spring member 620 includes but is not limited to a metal spring member 620 or a plastic elastic member. In one embodiment, the base plate 100 includes a first handle portion 110 and a second handle portion 120, and the first handle portion 110 and the second handle portion 120 are respectively welded to the top surface of the base plate 100. It can be understood that the first handle portion 110 and the second handle portion 120 facilitate the user to transport the stacking jig 10 for the battery pack.

[0043] like Figure 2 As shown, in one embodiment, the stacking jig 10 for the battery pack further includes a positioning assembly 700, and the positioning assembly 700 is arranged around the stacking area 201 and fixedly connected to the carrier plate 200. In one embodiment, the positioning assembly 700 includes a first positioning block 710 and a second positioning block 720; the first positioning block 710 is perpendicular to the second positioning block 720, and the first positioning block 710 and the second positioning block 720 are both in the shape of long strips. It can be understood that the first positioning block 710 and the second positioning block 720 are used to position the battery module in the stacking area 201 to prevent the battery module from deviating after being squeezed.

[0044] like Figures 1 to 4As shown, in one embodiment, the pressure-bearing mechanism 300 and the pushing mechanism 400 are arranged opposite to each other, and the pressure-bearing mechanism 300 and the pushing mechanism 400 are respectively located on both sides of the stacking area 201, and the pressure-bearing mechanism 300 is formed with a pressure-bearing portion 310, and the pressure-bearing portion 310 abuts against the side of the battery module away from the extrusion plate 420. In one embodiment, the stacking jig 10 for the battery pack further includes a pressure sensor 800, and the pressure sensor 800 is embedded in the pressure-bearing portion 310, and the pressure sensor 800 is used to detect the extrusion force on the battery module. It can be understood that the extrusion plate 420 presses the battery module by sliding toward the battery module, so that the battery module is pressurized and the pressure is transmitted to the pressure sensor 800. When the pressure reaches the preset value of the pressure sensor 800, the pressure sensor 800 transmits an electrical signal to the alarm system or the driving member, so that the alarm system gets an alarm light or a buzzer to respond to remind the user to manually stop driving the extrusion plate 420 or control the driving member to stop working.

[0045] The present application also provides a stacking device for a battery pack, comprising the stacking jig for a battery pack described in any of the above embodiments, the stacking device for the battery pack also comprising a baler, the supporting plate also forming a baling space connected to the stacking area, the baler being used to install a fastening steel belt to the periphery of the battery module through the baling space.

[0046] In this embodiment, after the battery module has completed the stacking and extrusion process, the user can operate the packaging machine to more conveniently install the fastening steel belt around the periphery of the battery module through the reserved packaging space.

[0047] Compared with the prior art, the present invention has at least the following advantages:

[0048] 1. The limit part elastically abuts against the extrusion plate, so that before the battery module reaches the critical point of overpressure, the limit part can play a stable and reliable elastic buffering role on the extrusion plate, thereby reserving sufficient reaction time for the user or the driving part, and immediately stopping the driving of the extrusion plate to continue moving and applying pressure.

[0049] 2. When the extrusion plate breaks through the elastic buffer limit of the limiting part, the block is located in the compression direction of the extrusion plate, so that the block can prevent the extrusion plate from continuing to apply pressure to the battery module, that is, the extrusion plate stops moving and applying pressure, thereby providing effective and reliable overpressure protection for the battery module and ensuring the quality of the product.

[0050] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A stacking jig for a battery pack, comprising a bottom plate, a bearing plate, a pressure mechanism and a pushing mechanism, wherein the bearing plate, the pressure mechanism and the pushing mechanism are all mounted on the bottom plate, a stacking area is formed between the bearing plate, the pressure mechanism and the pushing mechanism, and the stacking area is used to place battery modules. It is characterized in that The stacking fixture for the battery pack also includes: A stopper, the stopper is located in the compression direction of the extrusion plate of the pushing mechanism and is connected to the bearing plate; A limiting assembly is located below the stopper and fixedly connected to the supporting plate. A limiting portion of the limiting assembly extends and protrudes from the top surface of the supporting plate, and the limiting portion elastically abuts against the extrusion plate of the pushing mechanism.

2. The stacking jig for battery packs according to claim 1, It is characterized in that The pushing mechanism includes an L-shaped guide sliding base, an extrusion plate and a threaded transmission rod; the bottom of the extrusion plate is slidably connected to the L-shaped guide sliding base, one end of the threaded transmission rod is connected to the extrusion plate, the threaded transmission rod is threadedly rotationally connected to the L-shaped guide sliding base, and the other end of the threaded transmission rod is provided with a rotation connection part.

3. The stacking jig for battery packs according to claim 1, It is characterized in that A sliding installation groove is formed at one end of the bearing plate adjacent to the pushing mechanism, and the sliding installation groove is used to position the limiting component.

4. The stacking jig for battery packs according to claim 1, It is characterized in that The limiting assembly includes a guide column, a spring component and a limiting sleeve; one end of the guide column is fixedly connected to the supporting plate, and the spring component and the limiting sleeve are movably sleeved on the other end of the guide column in sequence; the limiting sleeve forms a limiting portion, the limiting portion extends and protrudes from the top surface of the supporting plate, and the limiting portion elastically abuts against the extrusion plate of the pushing mechanism.

5. The stacking jig for battery packs according to claim 1, It is characterized in that An adjusting screw is installed on the stopper, and the adjusting screw is arranged toward the extrusion plate; and / or, The bottom plate includes a first handle portion and a second handle portion, and the first handle portion and the second handle portion are respectively welded to the top surface of the bottom plate.

6. The stacking jig for battery packs according to claim 1, It is characterized in that The stacking jig for the battery pack further includes a positioning component, which is disposed around the stacking area and fixedly connected to the carrying plate.

7. The stacking jig for battery packs according to claim 6, It is characterized in that The positioning assembly includes a first positioning block and a second positioning block; the first positioning block is perpendicular to the second positioning block, and the first positioning block and the second positioning block are both in the shape of long strips.

8. The stacking jig for battery packs according to claim 1, It is characterized in that The pressure-bearing mechanism and the pushing mechanism are arranged opposite to each other, and are respectively located at two sides of the stacking area. The pressure-bearing mechanism is formed with a pressure-bearing portion, and the pressure-bearing portion abuts against a side of the battery module away from the extrusion plate.

9. The stacking jig for battery packs according to claim 8, It is characterized in that The stacking jig for the battery pack further includes a pressure sensor, which is embedded in the pressure-bearing portion and is used to detect the squeezing force applied to the battery module.

10. A stacking device for a battery pack, It is characterized in that A stacking jig for a battery pack comprising the stacking device for the battery pack according to any one of claims 1 to 9, wherein the stacking device for the battery pack further comprises a baler, the supporting plate further comprises a baling space connected to the stacking area, and the baler is used to install a fastening steel belt to the periphery of the battery module through the baling space.

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