CN212434761U

CN212434761U - Soft package lithium ion battery fixing device

Info

Publication number: CN212434761U
Application number: CN202021421242.5U
Authority: CN
Inventors: 王畅; 唐立成; 刁思强; 陈晓涛; 刘富亮; 王庆杰; 石斌
Original assignee: Guizhou Meiling Power Supply Co Ltd
Current assignee: Guizhou Meiling Power Supply Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-01-29
Anticipated expiration: 2030-07-17

Abstract

The application discloses soft packet of fixing device for lithium ion battery in the lithium ion battery technical field, including fixed bolster, upper cover plate, apron, movable base plate, screw rod fixed block, fastening screw, pressure pole, nut down. Arrange soft package lithium ion battery in between upper cover plate and the lower cover plate, drive fastening screw and screw rod fixed block through rotating the pressure lever, make the screw rod fixed block promote the movable base plate and exert pressure to upper cover plate and lower apron, thereby fix soft package lithium ion battery between upper cover plate and lower cover plate, and the recess cladding of upper cover plate and lower apron has one deck elastic buffer layer, be used for finely tuning soft package battery horizontal direction is balanced, guarantee that the perpendicular atress in upper and lower base plate is even on soft package battery surface. The method is suitable for soft package lithium ion batteries with different specifications, is simple and feasible to operate, and has the characteristic of wide applicability.

Description

Soft package lithium ion battery fixing device

Technical Field

The utility model relates to a lithium ion battery technical field, concretely relates to soft packet of fixing device for lithium ion battery.

Background

The lithium ion battery has the characteristics of high energy density, stable voltage, no memory effect, long cycle life and the like, and gradually becomes the first choice of electric tools and power energy devices. Synthesize contrast lithium ion battery structural style, soft packet of lithium ion battery has higher bulk density and energy density, receives the favor of numerous electronic products.

In the charge and discharge process of the soft package lithium ion battery, the formation of an SEI film, side reactions of electrolyte and positive and negative electrodes and the like can cause the generation of gas, and the gas existing in a pole piece can cause the blockage of a lithium ion transportation channel, generate lithium precipitation and dead lithium areas and influence the charge and discharge performance of the lithium ion battery, so that a clamp capable of resisting deformation is needed to maintain the pressure balance of the battery in the charge and discharge process.

The current clamp for the lithium ion battery comprises an upper cover plate and a lower cover plate, wherein the upper cover plate and the lower cover plate are respectively horizontally arranged one above the other, the lithium ion battery is placed between the upper cover plate and the lower cover plate, and the upper cover plate and the lower cover plate are fixedly connected through bolts; the upper cover plate comprises a base plate and a composite plate, wherein a groove is formed in the base plate, the composite plate is fixed in the groove, and the composite plate is made of a polyurethane material; the upper surface of the upper cover plate is provided with a level bubble. The upper cover plate and the lower cover plate are fixedly connected through four bolts. The method can solve the problem that the stress of the battery is uneven due to the deformation of the clamp, but the four bolts are respectively positioned on the four corners between the upper cover plate and the lower cover plate, the fastening and dismounting processes of the four bolts are troublesome, no method is available, the uniformity of the stress cannot be ensured, and more time and energy are consumed.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a soft packet of fixing device for lithium ion battery to it is comparatively troublesome to solve the fixed dismantlement of above-mentioned anchor clamps, and is difficult to the problem of guaranteeing the homogeneity.

The utility model discloses a soft package lithium ion battery uses fixing device, including upper cover plate and lower cover plate of pressing from both sides soft package lithium ion battery in the middle, all be equipped with the elastic buffer layer on the face that upper cover plate and lower cover plate and soft package lithium ion battery contact; still include the fixed bolster, the lower cover plate is fixed on the bottom plate that fixed bolster was equipped with, the upper cover plate is located the top of lower cover plate, and sliding connection has the upper cover plate to the extruded push down subassembly of lower cover plate on the fixed bolster.

The utility model discloses a theory of operation: the utility model discloses a place soft packet of lithium ion battery between upper cover plate and lower cover plate, and the upper cover plate is provided with the elastic buffer layer with the face of lower apron and soft packet of lithium ion battery contact again, can balance the upper cover plate and lap the power when the soft packet of lithium ion battery of extrusion down, simultaneously when concrete operation, through the subassembly that should push down in the axial, make the even lower apron of upper cover plate, one can finely tune the equilibrium force of soft packet of battery horizontal direction, guarantee that the perpendicular atress is even in upper cover plate and lower cover plate in soft packet of battery surface, two can also be applicable in the soft packet of lithium ion battery of different specifications. And the press-down component is only required to be pressed down or lifted up during installation and disassembly.

The utility model has the advantages that: the pressing component is arranged on the central axis of the upper cover plate and the central axis of the lower cover plate, and the pressing component is pressed downwards in the fixed operation process, so that the soft package lithium ion battery can be uniformly fixed, the problem of uneven stress is avoided when the pressing is performed, and the pressing component is only required to be lifted or pressed downwards in the installation and disassembly process, so that the operation is simple.

Further, the pushing assembly comprises a movable base plate and a fastening screw rod located on the movable base plate, a sliding groove connected with the fixed support in a sliding mode is formed in the side wall of the movable base plate, the upper cover plate is connected to the bottom of the movable base plate, and the fastening screw rod is coaxial with the movable base plate and is in threaded connection with the movable base plate. The fastening screw is rotated and pressed downwards, so that the fastening screw pushes the sliding movable base plate to slide downwards in the sliding groove, and the upper cover plate is driven to extrude towards the lower cover plate.

Further, the fixed bolster is equipped with the roof, fastening screw runs through the roof and is connected with the roof rotation. The roof can carry out spacingly to fastening screw, through the definite of two points on the fastening screw for rotate the power that pushes down fastening screw and be vertical decurrent all the time.

Further, the elastic buffer layer is provided with a groove for fixing the soft package lithium ion battery. Through the arrangement of the groove, the soft package lithium ion battery is more convenient to fix.

Furthermore, the elastic buffer layer is made of one of polycarbonate, polyurethane or polyethylene.

Further preferably, a screw fixing block is arranged between the fastening screw and the movable base plate, the screw fixing block is fixed on the movable base plate, and one end of the fastening screw is in threaded connection with the screw fixing block.

Further preferably, a nut is arranged at the other end of the fastening screw rod, and a pressure rod is arranged on the nut. The fastening screw can be driven to rotate by rotating the pressure rod, and the operation on the fastening screw is convenient.

Furthermore, symmetrical through holes are formed in the side wall of the nut, and the pressure rod penetrates through the symmetrical through holes. When the operation is not needed, the pressure rod can be taken down.

Wherein, the fixing bracket is made of one of a stainless steel plate and an aluminum alloy plate; the screw fixing block, the fastening screw and the pressure rod are made of aluminum alloy; the diameter of the screw fixing block is 40-100 mm, and the height of the screw fixing block is 10-50 mm; the diameter of the pressure rod is 20 mm-40 mm; the diameter of the fastening screw is 20 mm-50 mm; the diameter of the screw cap is 40 mm-100 mm, and the height is 40-80 mm; the base plates in the upper cover plate and the lower cover plate are made of one of epoxy plates, polymethyl methacrylate plates, wood plates and steel plates, are rectangular, square or polygonal in shape, and have the thickness of 10-20 mm; the elastic buffer layer cladding is in whole recess, and elastic buffer layer's thickness is 3 ~ 5 mm.

Through the axial driving force that the rotating pressure pole produced, drive fastening screw and screw rod fixed block, make the screw rod fixed block promote movable base plate and exert pressure to upper cover plate and lower apron, can easily fix soft package lithium ion battery at the upper cover plate under and between the apron, and the recess of upper cover plate and lower apron is set up one deck elastic buffer layer for it is balanced to finely tune soft package battery horizontal direction, guarantees that the perpendicular atress in upper and lower base plate is even on soft package battery surface.

Drawings

Fig. 1 is the utility model relates to a soft packet of lithium ion battery is with schematic structure diagram of fixing device embodiment.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a nut 1, a pressure rod 2, a fastening screw rod 3, a fixed support 4, a movable base plate 5, an upper cover plate 7, an elastic buffer layer 8 and a lower cover plate 9.

The embodiment is basically as shown in the attached figure 1: a fixing device for a soft package lithium ion battery comprises a fixing support 4, an upper cover plate 7 and a lower cover plate 9, wherein the upper cover plate 7 and the lower cover plate 9 are provided with grooves for fixing the soft package lithium ion battery, the grooves are formed in an elastic buffer layer 8, the lower cover plate 9 is fixed on a bottom plate arranged on the fixing support 4, and the upper cover plate 7 is positioned above the lower cover plate 9; sliding connection has the subassembly that pushes down with upper cover plate 7 down apron 9 extrusion on the fixed bolster 4, the subassembly that pushes down includes movable base plate 5 and the fastening screw 3 that is located on the movable base plate 5, the lateral wall of movable base plate 5 is equipped with the spout with fixed bolster 4 sliding connection, upper cover plate 7 is connected in the bottom of movable base plate 5, fastening screw 3 with movable base plate 5 coaxial and with movable base plate 5 threaded connection, fixed bolster 4 is equipped with the roof, fastening screw 3 runs through the roof and is connected with the roof rotation, be equipped with the screw rod fixed block between fastening screw 3 and the movable base plate 5, the screw rod fixed block is fixed on movable base plate 5, the one end and the screw rod fixed block threaded connection of fastening screw 3, be equipped with nut 1 on the other end of fastening screw 3, be provided with the symmetry through-hole on the lateral wall of nut 1.

The specific implementation process is as follows: arrange soft packet of lithium ion battery in between upper cover plate 7 and lower apron 9, the axial drive force that produces through rotating pressure pole 2 drives fastening screw 3 and supports downwards and hold the screw rod fixed block, makes the screw rod fixed block promote movable base plate 5 and applys pressure to upper cover plate 7 and lower apron 9 to fix soft packet of lithium ion battery in the recess between upper cover plate 7 and lower apron 9. Thereby light simple fix soft packet of lithium ion battery between upper cover plate 7 and lower apron 9, and the recess cladding of upper cover plate 7 and lower apron 9 has one deck elastic buffer layer 8 for it is balanced to finely tune soft packet of battery horizontal direction, guarantees that the perpendicular atress is even in upper and lower base plate on soft packet of battery surface.

Claims

1. A fixing device for a soft package lithium ion battery comprises an upper cover plate and a lower cover plate which sandwich the soft package lithium ion battery, wherein elastic buffer layers are arranged on the surfaces of the upper cover plate and the lower cover plate, which are in contact with the soft package lithium ion battery; the method is characterized in that: still include the fixed bolster, the lower cover plate is fixed on the bottom plate that fixed bolster was equipped with, the upper cover plate is located the top of lower cover plate, and sliding connection has the upper cover plate to the extruded push down subassembly of lower cover plate on the fixed bolster.

2. The fixing device for the soft package lithium ion battery according to claim 1, characterized in that: the lower pressing assembly comprises a movable base plate and a fastening screw rod located on the movable base plate, the side wall of the movable base plate is provided with a sliding groove connected with the fixed support in a sliding mode, the upper cover plate is connected to the bottom of the movable base plate, and the fastening screw rod is coaxial with the movable base plate and is in threaded connection with the movable base plate.

3. The fixing device for the soft package lithium ion battery of claim 2, characterized in that: the fixed support is provided with a top plate, and the fastening screw penetrates through the top plate and is rotatably connected with the top plate.

4. The fixing device for the soft package lithium ion battery according to claim 3, characterized in that: the elastic buffer layer is provided with a groove for fixing the soft package lithium ion battery.

5. The fixing device for the soft package lithium ion battery according to claim 4, characterized in that: the elastic buffer layer is made of one of polycarbonate, polyurethane or polyethylene.

6. The fixing device for the soft package lithium ion battery according to claim 5, characterized in that: and a screw fixing block is arranged between the fastening screw and the movable base plate, the screw fixing block is fixed on the movable base plate, and one end of the fastening screw is in threaded connection with the screw fixing block.

7. The fixing device for the soft package lithium ion battery of claim 6, wherein: and a nut is arranged at the other end of the fastening screw rod, and a pressure rod is arranged on the nut.

8. The fixing device for the soft package lithium ion battery of claim 7, wherein symmetrical through holes are formed in the side wall of the nut, and the pressure rod penetrates through the symmetrical through holes.