CN110436342A - Hanging apparatus and encapsulation battery pack lifting device - Google Patents

Abstract

The present invention relates to power battery lifting devices, a kind of hanging apparatus and encapsulation battery pack lifting device are specifically provided, the hanging apparatus include skeleton (100) and be fixed on skeleton for being placed in latch assembly (200) inside vertical long hole hole location, latch assembly include pin rod (210), the diameter changing mechanism being set in outside pin rod and be installed on skeleton for exert a force to diameter changing mechanism so that its variable diameter elastic force-applying mechanism；Diameter changing mechanism is set as making after latch assembly is placed in vertical long hole hole location, is increased by the power diameter that elastic force-applying mechanism applies, and can be stuck in vertical long hole hole location and keep the state blocked.Manufacturing cost of the present invention is low, and structure is simple, facilitates operation, is applicable to all lifting products with vertical long hole hole location, has wide range of applications.

Description

Hoisting device and packaging battery pack hoisting tool

technical field

The invention relates to a power battery hoisting tool, in particular to a hoisting device and a packaging battery pack hoisting tool.

Background technique

The existing power batteries are all PACK battery packs, which generally refer to battery packs that are packaged, packaged and assembled. The interior mainly includes battery modules, BMS (BATTERY MANAGEMENT SYSTEM) battery management systems, electrical components and thermal management components. It is designed and assembled according to the different needs of customers. For example: connecting two batteries in series and forming a specific shape according to customer requirements, this process is called "pack", and the PACK battery pack is made through the above process.

In the production process of the PACK battery pack, the battery module needs to be hoisted and assembled inside the PACK box. The existing hoisting position is the hoisting hole set on the end plate of the battery module, so it is necessary to provide tooling at the corresponding position. Sufficient space is reserved; however, setting the hoisting holes on the end plate requires high machining accuracy, which increases the relative processing cost; and the pins arranged on the side of the battery module cannot be accurately positioned; at the same time, due to the longitudinal tensile strength of the end plate high, resulting in higher material costs.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a hoisting device and a hoisting tool for packaging battery packs in order to overcome the problem of the prior art that the hoisting holes need to be set separately. The elastic force-applying mechanism arranged in the hoisting device makes the diameter of the reducing mechanism increase after the bolt assembly is placed in the vertical long hole position and self-locks in the vertical long hole hole position, and then directly hoists the packaged battery pack, The structure is simple and compact, and the operation is convenient.

In order to achieve the above object, one aspect of the present invention provides a hoisting device, comprising a skeleton and a pin assembly fixed on the skeleton and used to be inserted into a vertical elongated hole, the pin assembly comprising a pin rod, a sleeve A reducing mechanism outside the pin rod and an elastic urging mechanism mounted on the frame for urging the reducing mechanism to reduce its diameter; the reducing mechanism is arranged to After the plug assembly is placed in the vertical long hole, its diameter is increased by the force exerted by the elastic force applying mechanism, and it can be stuck in the vertical long hole and maintain the stuck state.

Preferably, the diameter reducing mechanism includes a pin rod and a first wedge-shaped sleeve and a second wedge-shaped sleeve sleeved on the pin rod; one end of the pin rod is fixed on the frame, and the other end is a free end ; The first wedge-shaped sleeve and the second wedge-shaped sleeve each include a wedge-shaped end with an inclined surface, and the first wedge-shaped sleeve and the second wedge-shaped sleeve are respectively sleeved on the pin rod from bottom to top and The wedge-shaped ends of the two are arranged opposite to each other, so that the first wedge-shaped sleeve and the second wedge-shaped sleeve can fit and slide along the inclined surfaces on the wedge-shaped ends of each other, so as to change the first wedge-shaped sleeve and the second wedge-shaped sleeve. The diameter dimension of the cylindrical surface formed by the combination of the second wedge-shaped sleeves.

Preferably, an angle θ is formed between the inclined surfaces in the wedge-shaped ends of the first wedge-shaped sleeve and the second wedge-shaped sleeve and the extending direction of the pin rod, and tanθ≤0.36.

Preferably, the elastic force-applying mechanism includes an upper handle and a spring, the spring and the upper handle are sequentially sleeved on the pin rod from top to bottom, and the spring is positioned on the upper handle. between the hand and the skeleton.

Preferably, the second wedge-shaped sleeve has a flat end opposite to its wedge-shaped end, and the flat end is provided with a limit ring for limiting and fixing with the upper handle.

Preferably, the number of the bolt assemblies is multiple, which corresponds to the number and position of the vertical elongated holes opened on the object to be hoisted.

Preferably, a plurality of the latch assemblies are arranged around the skeleton.

Preferably, the number of the latch assemblies is four, which are respectively located at the four top corners of the rectangular plane formed by the skeleton, and the number of the pull-up handles is two, and each of the pull-up handles The handle is connected between the latch assemblies located at the top corners of the two short sides of the rectangle.

Preferably, the top of the center of the frame is provided with a handle that is convenient for hoisting.

The second aspect of the present invention also provides a packaged battery pack hoisting tool, including the above-mentioned hoisting device, the number and position of the pin rod assemblies are set corresponding to the vertical long holes on the packaged battery pack.

Through the above technical solutions, the packaged battery pack hoisting tool provided by the present invention can use the existing battery module bolt mounting holes to make them generally used as hoisting holes, and it is not necessary to reserve the module end plate and the lower box in the overall design of the PACK The space for the side beams is increased, thereby increasing the energy density of the whole package; since the hoisting direction is also changed from the existing side to the top of the present invention, there is no need for additional machining holes on the end plate surface, which reduces the manufacturing cost and at the same time, the positioning field of view It is clearly visible and easy to operate; in addition, due to the relatively high machining accuracy of the bolt mounting holes of the existing battery module, it is also convenient for hoisting and positioning; from the perspective of the working principle, the hoisting device provided by the present invention can be applied to all vertical The hoisting product with long hole position has a wide range of applications.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the hoisting device of the present invention;

Fig. 2 is the working principle schematic diagram of the hoisting device of the present invention;

Fig. 3 is the force analysis schematic diagram of the hoisting device of the present invention;

4 is a schematic diagram of the hoisting position of the packaged battery pack hoisting tool and the packaged battery according to the present invention;

FIG. 5 to FIG. 7 are schematic diagrams of the A-direction, B-direction and C-direction structures of FIG. 4 , respectively.

Description of reference numerals

100 skeleton 110 handle 200 bolt assembly

201 Flat end 202 Wedge end 210 Pin rod

220 The first wedge sleeve 230 The second wedge sleeve 231 Limit ring

300 pull-up handle 400 spring 500 mounting hole

G: The gravity of the object being hoisted;

D: the diameter of the cylindrical surface formed by the combination of the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230;

f: the elastic force of the spring 400 on the upper surface of the second wedge-shaped sleeve 230;

F: The pulling force exerted by the outside world on the tooling;

F1 and F2 are the two component forces perpendicular to the inclined plane and the vertical plane of the wedge-shaped sleeve, respectively.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

In the present invention, unless otherwise stated, the directional words used such as "up, down, left and right" generally refer to up, down, left and right as shown with reference to the accompanying drawings; "inside, outside" Usually refers to the inside and outside relative to the contour of each component itself; "far, near" generally refers to the inside and outside relative to the contour of each component itself.

As shown in FIG. 1 , in order to achieve the above purpose, one aspect of the present invention provides a hoisting device, which includes a frame 100 and a pin assembly 200 fixed on the frame 100 and used to be inserted into the vertical elongated hole. The bolt assembly 200 includes a pin rod 210 , a diameter reducing mechanism sleeved on the outside of the pin rod 210 , and an elastic force installed on the frame 100 for applying force to the diameter reducing mechanism to change the diameter thereof. The diameter-reducing mechanism is set so that after the bolt assembly 200 is placed in the vertical long hole, the diameter is increased by the force exerted by the elastic force applying mechanism, and the diameter can be stuck in the vertical slot. The state of being stuck in the slot of the elongated hole, that is, the latch assembly 200 is self-locking in the slot of the vertical slot. Specifically, the diameter reducing mechanism includes a first wedge-shaped sleeve 220 and a second wedge-shaped sleeve 230 sleeved on the pin rod 210 . 2 and 3, one end of the pin rod 210 is fixed on the frame 100, and the other end is a free end; the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 each include a The wedge-shaped end 202, the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 are respectively sleeved on the pin rod 210 from bottom to top, and the wedge-shaped ends 202 of the two are opposite to each other, so that the first The wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 can fit and slide along the inclined surfaces on the wedge-shaped end 202 of each other, so as to change the cylindrical surface formed by the combination of the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 diameter size. The elastic force-applying mechanism includes an upper pull handle 300 and a spring 400, the spring 400 and the upper pull handle 300 are sequentially sleeved on the pin rod 210 from top to bottom, and the spring 400 is located in the Pull up between the handle 300 and the frame 100 . The first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 also have a flat end 201 opposite to the wedge-shaped end 202 thereof. For the convenience of positioning, the flat end 201 of the second wedge-shaped sleeve 230 is provided for The limit ring 231 is limited and fixed with the upper pull handle 300 . In order to ensure that the object to be hoisted is evenly stressed during the hoisting process, the number of the bolt assemblies 200 is multiple, which corresponds to the number and position of the vertical elongated holes opened on the object to be hoisted. The latch assembly 200 is disposed around the frame 100 . Specifically, in the embodiment shown in FIG. 1 , the number of the latch assemblies 200 is four, and they are located at the four corners of the rectangular plane formed by the frame 100 . Correspondingly, the The number of the upper pull handles 300 is two, and each of the upper pull handles 300 is connected between the latch assemblies 200 located at the top corners of the short sides of the rectangle. In order to facilitate hoisting, a handle 110 is also provided on the top of the center of the frame 100 . When hoisting, an external hoisting force can be applied directly on the handle 110 .

With reference to FIG. 2 and FIG. 3 , the working principle of the present invention will be described in detail below with reference to the action process of the present invention. Specifically, the working process of the hoisting device provided by the present invention is as follows:

First, the upper handle 300 provided on both sides of the hoisting device is pulled up, so that the spring 400 is contracted, and the second wedge-shaped sleeve 230 is raised under the drive of the upper handle 300; secondly, the four latch assemblies 200 are aligned and arranged Inside the vertical elongated hole on the object to be hoisted; then, loosen the lifting handle 300 to allow the spring 400 to stretch naturally, and the spring 400 drives the second wedge-shaped sleeve 230 to move down; finally, the hoisting device is lifted by the handle 110, The first wedge-shaped sleeve 220 and the inclined end surface of the second wedge-shaped sleeve 230 are in contact with each other and slide relative to each other to realize the hoisting of the module. More specifically, if the lifting of the hoisted object is to be realized, the pulling force F exerted by the outside is greater than the gravity G of the hoisted object, and the elastic force f exerted by the spring 400 on the second wedge-shaped sleeve 230 makes the second wedge-shaped sleeve 230 lift. The relative position remains unchanged, while the first wedge-shaped sleeve 220 moves upward relative to the second wedge-shaped sleeve 230, so that the diameter D of the cylindrical surface formed by the combination of the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 increases, resulting in The frictional force between the latch assembly 200 and the hole wall of the vertical long hole hole provided on the object to be hoisted increases, so as to realize the hoisting of the object to be hoisted.

As shown in FIG. 2 in combination with FIG. 3 , taking the first wedge-shaped sleeve 220 as an example, during the hoisting process, under the gravity G of the object to be hoisted, the second wedge-shaped sleeve 230 passes through the contact with the first wedge-shaped sleeve 220 The force F1 perpendicular to the inclined surface of the wedge-shaped sleeve 220 and the force F2 perpendicular to the vertical surface of the wedge-shaped sleeve by the inclined surface applied to the first wedge-shaped sleeve 220 can be understood as the resultant force of F1 and F2 is equal to the gravity G and in the opposite direction. If the object to be hoisted is to be hoisted, the plug assembly 200 must not come out of the vertical long hole during the hoisting process after being placed in the vertical long hole. That is to say, it is necessary to satisfy the condition of friction force≥gravity, that is: G=F2×tanθ≤F2×μ, so long as tanθ≤μ is satisfied. μ in the previous formula is the hole wall friction coefficient between the bolt assembly and the vertical long hole hole, and the magnitude of the friction coefficient depends on the material of the object to be hoisted set at the vertical long hole hole. In a specific embodiment of the present invention, the hoisting device is used to hoist the packaged battery pack, and the plug assembly 200 needs to cooperate with the mounting holes provided on the packaged battery pack, and the material of the packaged battery pack is mostly aluminum. , the friction coefficient of aluminum is 0.36, then when tanθ≤0.36, the mechanism will realize self-locking. It should be noted that the value of 0.36 in the above is only the friction coefficient between the hoisting device and the packaged battery pack product in this embodiment. If the material is changed, θ can be changed according to the change of the friction coefficient. The self-locking means that there can be enough friction between the bolt assembly 200 and the vertical elongated hole set on the object to be hoisted to prevent the bolt assembly 200 from detaching from the vertical elongated hole. Hoisting of packaged battery packs. That is, an angle θ is formed between the inclined surfaces of the inclined end surfaces of the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 and the extending direction of the pin rod 210 , and tanθ≦0.36. It can be seen from the above content that, based on the above technical solutions of the present invention, in practical applications, the range of tanθ will also be selected according to the needs of different materials of the objects to be hoisted. Meanwhile, the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 and The dimensional proportional relationship between the pins 210 in the axial direction and the radial direction also needs to be selected differently, and the content of this part will not be repeated here.

As shown in FIG. 4 to FIG. 7 , another aspect of the present invention further provides a packaged battery pack hoisting tool, including the above-mentioned hoisting device, the number and position of the pin rod assemblies 200 and the number and position of the packaged battery pack The vertical slot hole position of the corresponding setting. In the embodiments shown in FIGS. 4 to 7 , the vertical long holes are installation holes 500 provided on four end corners of the packaged battery pack. Specifically, the hoisting tool mainly includes a skeleton 100. In order to make the structure simple and compact, the skeleton 100 adopts an "I"-shaped structure, and four latch assemblies 200 are respectively set at the four end corners of the I-shaped shape. The handle 300 is connected to the frame 100 through a spring 400 ; the latch assembly 200 includes a pin rod 210 and a first wedge-shaped sleeve 220 and a second wedge-shaped sleeve 230 sleeved on the pin rod 210 . During the use of the hoisting tool, the skeleton 100 is used as an integral force-bearing component, and is made of high-strength 5-series aluminum material, and the bottom surface is wrapped with non-metallic materials to achieve the insulation function of the battery module and prevent leakage during the hoisting process. and other safety incidents. The four corners of the packaged battery pack are respectively provided with mounting holes 500 for inserting the four plug assemblies 200 and hoisting the packaged battery pack. During the hoisting process, the upper handle 300 and the flat end 201 of the second wedge-shaped sleeve 230 are first limited in position, and the upper handle 300 is pulled upward to drive the second wedge-shaped sleeve 230 to move upward and to compress the spring 400; the first The inclined surfaces of the wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 cooperate and slide with each other, and the contact area between the inclined surfaces of the two sleeves is gradually increased, so that the first wedge-shaped sleeve 220 and the second wedge-shaped sleeve 230 are combined to form The diameter of the cylindrical surface of the battery pack becomes larger, and it expands relatively in the mounting hole 500 of the encapsulated battery pack, so that the gravity of the bearing module can be smoothly hoisted.

In the embodiments shown in FIG. 1 to FIG. 5 , the mounting holes for encapsulating the battery pack are all light holes, and a steel wire threaded sleeve can be embedded in the installation hole, and the wire threaded sleeve can be used to achieve assembly and fixation with other components. The invention utilizes the friction force between the light hole and the plug assembly to realize the hoisting of the packaged battery pack. However, it is necessary to match the outer diameter of the pin rod in the bolt assembly with the inner diameter of the first and second wedge-shaped sleeves according to the friction coefficient of the material used and the weight of the object to be hoisted. , the length ratio of the second wedge-shaped sleeve, etc. are calculated and set in detail. In addition, it should be noted that in other hoisting product applications, if the vertical long hole is not a smooth hole but a threaded hole, the thread in the threaded hole itself can increase the friction force, and with the above structural settings, it can achieve more Good results.

It can be seen from the above content that, compared with the prior art, the packaged battery pack hoisting tool provided by the present invention can use the existing battery module bolt mounting holes to make it universal as a hoisting hole, and it is not necessary to reserve molds in the overall design of the PACK. The space between the end plate and the side beam of the lower box is increased, thereby increasing the energy density of the whole package; since the hoisting direction is also changed from the existing side to the top of the present invention, there is no need for additional machining holes on the end plate surface, reducing the At the same time of manufacturing cost, the positioning field of view is clearly visible, which is convenient for operation; in addition, due to the relatively high processing precision of the bolt mounting holes of the existing battery module, it is also convenient for hoisting and positioning; from the perspective of working principle, the hoisting device provided by the present invention is It can be applied to all hoisting products with vertical elongated holes and has a wide range of applications.

The preferred embodiments of the present invention have been described above in detail with reference to the accompanying drawings, however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, for example, the arrangement position and quantity of the latch assemblies can be adjusted according to different structures and shapes of objects to be hoisted. In order to avoid unnecessary repetition, the present invention will not describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed in the present invention, and all belong to the protection scope of the present invention.

Claims (10)

1. A hoisting device, characterized in that it comprises a frame (100) and a plug assembly (200) fixed on the frame (100) and used to be inserted into the interior of a vertical elongated hole, the plug assembly ( 200) comprises a pin rod (210), a diameter reducing mechanism sleeved on the outside of the pin rod (210), and a diameter reducing mechanism mounted on the frame (100) for applying force to the diameter reducing mechanism to reduce the diameter The elastic force applying mechanism; the diameter reducing mechanism is set so that after the bolt assembly (200) is placed in the vertical slot hole, the diameter is increased by the force exerted by the elastic force applying mechanism, and the diameter can be increased. It is stuck in the vertical slot and keeps the stuck state. 2 . The hoisting device according to claim 1 , wherein the diameter reducing mechanism comprises a pin rod ( 210 ), a first wedge-shaped sleeve ( 220 ) and a first wedge-shaped sleeve ( 220 ) sleeved on the pin rod ( 210 ). 3 . Two wedge sleeves (230); One end of the pin rod (210) is fixed on the frame (100), and the other end is a free end; The first wedge sleeve (220) and the second wedge sleeve (230) each include a wedge end (202) having an inclined surface, the first wedge sleeve (220) and the second wedge sleeve (230) They are respectively sleeved on the pin rods (210) from bottom to top, and the wedge-shaped ends (202) of the two are arranged opposite to each other, so that the first wedge-shaped sleeve (220) and the second wedge-shaped sleeve (230) They can fit and slide along the inclined surfaces on the wedge-shaped ends (202) of each other, so as to change the diameter size of the cylindrical surface formed by the combination of the first wedge-shaped sleeve (220) and the second wedge-shaped sleeve (230). 3. The hoisting device according to claim 2, characterized in that the inclined surfaces in the wedge ends (202) of the first wedge sleeve (220) and the second wedge sleeve (230) and the pin rod An included angle θ is formed between the extending directions of (210), and tanθ≤0.36. 4. The hoisting device according to claim 2, characterized in that, the elastic force applying mechanism comprises a pull-up handle (300) and a spring (400), the spring (400) and the pull-up handle (300) The pin rods (210) are sequentially sleeved from top to bottom, and the springs (400) are located between the pull-up handle (300) and the frame (100). 5. The hoisting device according to claim 4, wherein the second wedge-shaped sleeve (230) has a flat end (201) opposite its wedge-shaped end (202), the flat end (201) A limiting ring (231) for limiting and fixing with the upper pull handle (300) is provided. 6 . The hoisting device according to claim 4 , wherein the number of the bolt assemblies ( 200 ) is plural, which corresponds to the number and position of the vertical elongated holes opened on the object to be hoisted. 7 . . 7. The hoisting device according to claim 6, wherein a plurality of the latch assemblies (200) are arranged around the frame (100). 8 . The hoisting device according to claim 6 , wherein the number of the plug assemblies ( 200 ) is four, which are respectively located at the four top corners of the rectangular plane formed by the frame ( 100 ). 9 . The number of the upper pull handles (300) is two, and each of the upper pull handles (300) is connected to the latch assembly (200) located at the top corners of the short sides of the rectangle. between. 9. The hoisting device according to claim 1, characterized in that, a handle (110) convenient for hoisting is provided on the top of the center of the frame (100). 10. A packaged battery pack hoisting tool, characterized by comprising the hoisting device according to any one of claims 1-9, the number and position of the pin rod assemblies (200) being arranged on the same The vertical slot hole position of the corresponding setting.