CN218351540U

CN218351540U - Heat radiator for be used for secondary thin film battery

Info

Publication number: CN218351540U
Application number: CN202221919041.7U
Authority: CN
Inventors: 简洁; 赵少彬; 刘诗薇; 罗师强
Original assignee: Shenzhen Xinyuan Flexible Technology Co ltd
Current assignee: Shenzhen Xinyuan Flexible Technology Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-01-20
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to a heat abstractor for secondary film battery, this heat abstractor for secondary film battery include anchor clamps, the both ends of anchor clamps all are provided with splint, the side that splint are relative all is provided with the heat-conducting layer, anchor clamps connect splint, anchor clamps are used for the drive splint move in opposite directions, so that splint centre gripping battery. The utility model provides a heat abstractor for secondary film battery is through setting up splint at the both ends of anchor clamps to a side that is relative at splint is provided with the heat-conducting layer, and splint do the motion in opposite directions under the clamping-force effect of anchor clamps, make splint centre gripping battery, and dispel the heat to the battery through the heat-conducting layer at the in-process of centre gripping, thereby avoid the battery to make the encapsulation membrane take place irreversible deformation because of high temperature at the in-process of encapsulation. The design can avoid short circuit of the battery due to high temperature deformation, and can also avoid the reduction of the electrolyte due to high temperature evaporation under the condition of opening formation.

Description

Heat radiator for be used for secondary thin film battery

Technical Field

The utility model relates to an anchor clamps technical field, in particular to a heat abstractor for secondary film battery.

Background

The meaning and the purpose of laminate polymer battery encapsulation lie in using the flexible packaging material of high barrier nature completely to completely insulate the inside of electric core with the outside, make inside be in vacuum, anaerobic, anhydrous environment. Taking a soft package lithium ion battery as an example, the current soft package lithium ion battery packaging process comprises the steps of punching, side sealing, top sealing, liquid injection and pre-sealing, standing and formation and secondary sealing of an aluminum plastic film, and the traditional film lithium ion battery is prepared by reducing the number of electrode layers of the soft package battery based on the packaging process of the soft package battery.

The laminate polymer battery is because of its electrode number of piles is more, and radiating efficiency is higher in its packaging process, and the electrode number of piles of film battery is less, and film battery is at the packaging process, and film battery's electrolyte is less, consequently is difficult to the convection heat dissipation, also because of its thickness characteristics that are thinner, and irreversible deformation takes place for the high temperature of heat-seal easily for the packaging film, and then causes the battery short circuit easily. At present, no specific solution is available for the heat dissipation problem of the thin film battery in the packaging process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat abstractor for secondary film battery aims at solving the battery at the in-process of encapsulation, and the heat that the heat-seal produced passes to the battery and is difficult to lead the scattered, influences the technical problem of battery inner member easily.

In order to achieve the above object, the utility model provides a heat abstractor for secondary film battery, which comprises an anchor clamps, the both ends of anchor clamps all are provided with splint, the side that splint are relative all is provided with the heat-conducting layer, anchor clamps are connected splint, anchor clamps are used for the drive splint move in opposite directions, so that splint centre gripping battery.

As a further improvement of the utility model: one side of the clamping plate is connected with a hard layer, and the heat conduction layer is arranged on the hard layer or on the periphery of the hard layer.

As a further improvement of the utility model: an exhaust groove is arranged on the clamping plate.

As a further improvement of the utility model: the clamp comprises a clamping piece, the clamping piece is made of an elastic plate, the clamping piece is provided with a first movable end and a second movable end, the first movable end and the second movable end are used for clamping force, and the first movable end and the second movable end are used for clamping a side face of the clamping plate back to back respectively.

As a further improvement of the utility model: the anchor clamps include elastic component, slide rail, be provided with a plurality of splint on the slide rail, a plurality of splint sliding connection in on the slide rail, the elastic component is located one side of a plurality of splint, the one end of elastic component is provided with the pulley, the elastic component passes through pulley sliding connection in on the slide rail, a side of elastic component with a plurality of splint are connected.

As a further improvement of the utility model: the elastic part adopts fence column structure, the elastic part is including flexible body, the both ends of flexible body are provided with a plurality of connecting axles, the one end of connecting axle all with flexible body coupling, the other end of connecting axle all with splint are connected.

As a further improvement of the utility model: the one end of a plurality of splint all is provided with the supporting part, the slide rail is provided with the recess, supporting part sliding connection the recess, so that a plurality of splint sliding connection in on the slide rail.

As a further improvement of the utility model: the clamping plates are connected to the sliding rail in parallel at intervals.

As a further improvement of the utility model: a heat dissipation channel is arranged on the plate body of the clamping plate.

As a further improvement of the utility model: still include two and collect the board, two collect the relative side of board and all be provided with a plurality of splint, the holder is equipped with first expansion end, the second expansion end that is used for the clamp to get, first expansion end, second expansion end centre gripping respectively collect a side that the board was carried on the back mutually.

This technical scheme's heat abstractor for secondary film battery, including anchor clamps, the both ends of anchor clamps all are provided with splint, the relative side of splint all is provided with the heat-conducting layer, anchor clamps are connected splint, anchor clamps are used for the drive splint move in opposite directions, so that splint centre gripping battery. The utility model provides a heat abstractor for secondary film battery is through setting up splint at the both ends of anchor clamps to a side relative at splint is provided with the heat-conducting layer, and splint do the relative motion under the drive of anchor clamps, splint centre gripping battery, and dispel the heat to the battery at the in-process of centre gripping through the heat-conducting layer, thereby avoid the battery to make the encapsulation membrane take place irreversible deformation because of high temperature at the in-process of encapsulation, influence the battery performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a heat dissipation device of the present application;

fig. 2 is a schematic structural diagram of an embodiment of a thin film battery of the present application;

FIG. 3 is a cross-sectional view of one embodiment of the splint of the present application;

FIG. 4 is a cross-sectional view of another embodiment of a splint of the present application;

FIG. 5 is a cross-sectional view of yet another embodiment of the splint of the present application;

fig. 6 is a schematic structural diagram of an embodiment of a heat dissipation device of the present application;

FIG. 7 is another perspective view of the heat dissipation device of FIG. 6;

fig. 8 is a schematic structural diagram of another embodiment of a heat dissipation device of the present application.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Clamping piece	2	Clamping plate
3	Heat radiation plate covering area	4	Battery with a battery cell
				5	Air vent	6	Exhaust groove
7	Heat conducting layer	8	Hard layer
				9	Sliding rail	10	Supporting part
11	Telescopic body	12	Connecting shaft
				13	Collection plate

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Laminate polymer battery is because of its electrode number of piles is more, and radiating efficiency is higher in its packaging process, and the electrode number of piles of film battery is lower, and film battery is at the packaging process, and film battery's electrolyte is less, consequently is difficult to the convection current heat dissipation, also because of its thickness characteristic that is thinner, and irreversible deformation takes place because of the high temperature of heat-seal easily for the packaging film, and then causes the battery short circuit easily.

The utility model aims at providing a heat abstractor for secondary film battery aims at solving the battery at the in-process of encapsulation, and the heat that the electrode produced is difficult to lead the technical problem who looses.

Referring to fig. 1 to 8, in an embodiment of the heat dissipation device for a secondary thin-film battery of the present application, the heat dissipation device includes a clamp, two ends of the clamp are respectively provided with a clamping plate 2, one side surface of the clamping plate 2 opposite to the clamping plate is respectively provided with a heat conduction layer 7, the clamp is connected to the clamping plate 2, and the clamp is configured to drive the clamping plate 2 to move in opposite directions, so that the clamping plate 2 clamps a battery 4.

Referring to fig. 1-2, since the heat sink covering area 3 of the battery 4 releases heat and generates gas during the packaging process, a vent hole 5 is formed at one side of the heat sink covering area 3, and the vent hole 5 is used for discharging gas generated in the electrode. Since the heat is difficult to dissipate when the electrodes release heat, the heat dissipation device for the secondary thin film battery provided by the embodiment dissipates the heat of the heat dissipation plate coverage area of the battery. Specifically, the clamping plate 2 of the heat dissipation device is used for clamping the battery, and the clamp drives the clamping plate 2 to enable the clamping plate to achieve a clamping effect. In the clamping process, the heat conducting layer 7 has a heat conducting effect, so that the heat transfer efficiency can be improved, and the concentrated heat in the coverage area of the heat radiating plate can be quickly diffused and transferred.

The application discloses a heat abstractor for secondary film battery sets up splint through the both ends at anchor clamps to a side that is relative at splint is provided with the heat-conducting layer, and splint do the motion in opposite directions under the drive of anchor clamps, splint centre gripping battery, and dispel the heat to the battery through the heat-conducting layer at the in-process of centre gripping, thereby avoid the battery to make the encapsulation membrane take place irreversible deformation because of high temperature at the in-process of encapsulation, influence the battery performance.

In conclusion, the number of electrode layers of the thin-film battery is low, and the thin-film battery is suitable for heat conduction and heat dissipation, so that heat can be effectively conducted out through the scheme of heat dissipation of the clamp, and the thin-film battery is suitable for quick charging. In addition, because electrolyte is less, the design of splint can concentrate the enrichment around the electrode with limited electrolyte, avoids becoming or the condition that appears electrode and electrolyte separation in the charging process.

Further, in an embodiment, a hard layer 8 is connected to one side of the clamping plate 2, and the heat conducting layer 7 is disposed on the hard layer 8 or disposed around the hard layer 8.

In the present embodiment, the plywood 2 and the hard layer 8 are made of the same hard material, such as wood, metal, glass, PE plate, PP plate, etc., and the plywood 2 and the hard layer 8 are integrally molded; the heat conducting layer 7 can adopt heat conducting silica gel, high heat conducting composite material (mixture of metal and graphite) and the like; the clamp may be a clip, a jaw, a spring clip, or the like. As shown in fig. 3, the heat conducting layer 7 is made of heat conducting silica gel, the heat conducting layer 7 is coated on one side surface of the clamping plate 2, and when the clamping plate 2 clamps the heat radiating plate covering area 3 of the battery 4, the heat conducting layer 7 can be used for conducting heat and radiating heat to the heat radiating plate covering area 3; in other embodiments, in order to save materials and reduce cost, the heat conducting layer can be used more precisely, as shown in fig. 4-5, the heat conducting layer 7 can be arranged around the hard layer 8 according to the specific position of heat generation of the electrode, or the middle part of the clamping plate 2 is the hard layer 8 and the heat conducting layer 7 is arranged around the middle part; or the hard layer 8 is arranged on the clamping plate in a stripe shape, a scattered point shape and an array shape, in other embodiments, the hard layer 8 and the heat conduction layer 7 can be a combination of multiple materials.

Further, in one embodiment, the clamping plate 2 is provided with an air vent groove 6. The shape of the exhaust hole 5 is not limited, and it may be a circular hole or a rectangular groove. In this embodiment, the gas discharge groove 6 is used to pass the gas generated from the electrode through the chucking plate 2. The shape of the exhaust groove 6 can be adjusted and designed according to the size and the position of the exhaust hole 5, and the exhaust groove 6 can be adjusted and designed into a hollow shape or a through hole shape.

Further, in an embodiment, the fixture comprises a clamping member 1, the clamping member 1 is made of an elastic plate, the clamping member 1 is provided with a first movable end and a second movable end, the first movable end and the second movable end provide clamping force and are used for clamping, and the first movable end and the second movable end respectively clamp a side surface of the clamping plate 2, which is back to back.

In the present embodiment, the clamping member 1 is designed in a plate shape, and is made of an elastic plate material, which may have elastic properties. When the first movable end and the second movable end of the clamping piece 1 respectively clamp one side surface of the clamping plate 2 opposite to each other, the two clamping plates 2 can be driven to move in opposite directions through the elasticity of the clamping pieces, and therefore the clamping plates 2 can clamp the battery.

Further, in an embodiment, the fixture includes an elastic member and a slide rail 9, a plurality of clamping plates 2 are disposed on the slide rail 9, the plurality of clamping plates 2 are slidably connected to the slide rail 9, the elastic member is respectively located on two sides of the plurality of clamping plates 2, a pulley is disposed at one end of the elastic member, the elastic member is slidably connected to the slide rail 9 through the pulley, and a side surface of the elastic member is connected to the plurality of clamping plates 2.

As shown in fig. 6-7, in the present embodiment, a plurality of slidable clamping plates 2 are arranged on the sliding rail 9, and each clamping plate 2 is connected by an elastic member, so that the clamping plates 2 are closed by the driving of the elastic member. So set up, when the user placed a plurality of batteries between two splint 2, remove through a plurality of splint and move flexible drawing in, can realize carrying out centre gripping and heat dissipation to a plurality of batteries simultaneously, and can avoid deformation to improve encapsulation production efficiency.

Further, the elastic component is fence column structure, the elastic component includes flexible body 11, the both ends of flexible body are provided with a plurality of connecting axles 12, the one end of connecting axle 12 all with flexible body 11 is connected, the other end of connecting axle 12 all with splint 2 is connected.

In this embodiment, the clamping plate 2 is combined with the elastic member to form a multi-slot heat sink. Because connecting axle 12 is articulated with one side of splint to because flexible body 11 is fence column structure, consequently the elastic component can be under the effect of lacking the external force, through the elasticity characteristic of self, makes elastic component self collapsible drawing in its length direction, drives splint 2 displacement on slide rail 9 then, can carry out centre gripping and heat dissipation to a plurality of batteries simultaneously, thereby improves encapsulation production efficiency.

Further, in an embodiment, one end of each of the plurality of clamping plates 2 is provided with a supporting portion 10, the sliding rail 9 is provided with a groove, and the supporting portion 10 is slidably connected with the groove, so that the plurality of clamping plates 2 are slidably connected to the sliding rail 9. Because the length direction of the groove is the same as that of the elastic part, the arrangement of the groove can ensure that the clamping plates 2 move more stably on the sliding rail 9 when the clamping plates 2 are folded.

Further, in one embodiment, the plurality of clamping plates are connected to the sliding rail in parallel and at intervals. Because each splint 2 is parallel to each other, each splint 2 moves more stably on slide rail 9 to because each splint 2 interval sets up, can leave the space of placing the film battery between each splint 2.

Further, in an embodiment, a heat dissipation channel (not shown) is disposed on the plate body of the clamping plate 2. After the elastic piece is folded, the batteries on two sides of the same clamping plate 2 are in a heat release state, in order to solve the heat dissipation problem of the clamping plate 2, a heat dissipation channel is arranged in the middle of the clamping plate 2 between two adjacent batteries, and the heat dissipation channel is used for transferring heat to the air.

Further, referring to fig. 8, in an embodiment, the heat dissipation device further includes two collecting plates 13. The two collecting plates 13 are provided with a plurality of clamping plates 2 on opposite side faces, the clamping piece is provided with a first movable end and a second movable end which are used for clamping, and the first movable end and the second movable end respectively clamp the side faces, back to back, of the collecting plates 13, so that a planar multi-clamping-groove heat dissipation device is formed and can conduct heat conduction and heat dissipation on one side faces of a plurality of batteries.

The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. The utility model provides a heat abstractor for secondary film battery, its characterized in that, includes anchor clamps, the both ends of anchor clamps all are provided with splint, the relative side of splint all is provided with the heat-conducting layer, anchor clamps are connected splint, anchor clamps are used for the drive splint move in opposite directions, so that splint centre gripping battery.

2. The heat dissipating device for a secondary thin film battery as claimed in claim 1, wherein a hard layer is attached to one side of the clamping plate, and the heat conductive layer is disposed on or around the hard layer.

3. The heat dissipating device for a secondary thin film battery as claimed in claim 1, wherein the clamping plate is provided with a vent groove.

4. The heat dissipating device for a secondary thin-film battery as claimed in claim 1, wherein the holder comprises a holder made of an elastic plate, the holder has a first movable end and a second movable end for providing clamping force and clamping force, and the first movable end and the second movable end respectively clamp opposite sides of the clamping plate.

5. The heat dissipating device for a secondary thin film battery as claimed in claim 1, wherein the clip comprises an elastic member and a slide rail, the slide rail is provided with a plurality of clamping plates, the clamping plates are slidably connected to the slide rail, the elastic member is located at two sides of the clamping plates, one end of the elastic member is provided with a pulley, the elastic member is slidably connected to the slide rail through the pulley, and one side of the elastic member is connected to the clamping plates.

6. The heat dissipating device for the secondary thin film battery as claimed in claim 5, wherein the elastic member has a fence-like structure, the elastic member includes a flexible body, a plurality of connecting shafts are provided at both ends of the flexible body, one end of each connecting shaft is connected to the flexible body, and the other end of each connecting shaft is connected to the clamping plate.

7. The heat dissipating device for a secondary thin film battery as claimed in claim 5, wherein the plurality of clamping plates are each provided at one end thereof with a support portion, and the slide rail is provided with a groove, the support portion being coupled to the groove so that the plurality of clamping plates are slidably coupled to the slide rail.

8. The heat dissipating device for a secondary thin film battery as claimed in claim 7, wherein the plurality of clamping plates are connected to the slide rail in parallel and spaced apart from each other.

9. The heat dissipating device for a secondary thin film battery according to any one of claims 5 to 8, wherein the plate body of the clamping plate is provided with heat dissipating channels.

10. The heat dissipating device for a secondary thin film battery as claimed in claim 4, further comprising two collecting plates, wherein a plurality of clamping plates are disposed on opposite sides of the two collecting plates, the clamping member has a first movable end and a second movable end for clamping, and the first movable end and the second movable end respectively clamp opposite sides of the collecting plates.