CN211959587U

CN211959587U - Structure for prolonging service life of flexible heating film of lithium battery

Info

Publication number: CN211959587U
Application number: CN202020972155.2U
Authority: CN
Inventors: 李�诚; 胡庆军; 李世明
Original assignee: Jiangxi Yotteo Auto Technology Co ltd
Current assignee: Jiangxi Yotteo Auto Technology Co ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2020-11-17
Anticipated expiration: 2030-06-01

Abstract

The utility model discloses a structure for prolonging the service life of a flexible heating film of a lithium battery, which comprises a flame-retardant foam board, wherein a backing plate is arranged on the upper side of the flame-retardant foam board in a laminating manner, a flexible heating film is arranged on the upper side of the backing plate in a laminating manner, one side of the flexible heating film is electrically connected with a power line, a glass fiber double-sided adhesive layer is fixedly bonded on the upper side of the flexible heating film, a heat dissipation aluminum plate is fixedly bonded on the upper side of the glass fiber double-sided adhesive layer, four corners of the flame-retardant foam board are provided with; the side plates are fixedly connected to the two sides of the heat dissipation aluminum plate, and the heat conduction uniformity is improved, the service life of the flexible heating film is prolonged, and the use risk of the lithium battery is reduced by adding the heat dissipation aluminum plate to the flexible heating film; the heat dissipation aluminum plate is arranged, so that the purposes of improving the heat conduction uniformity of the flexible heating film and reducing the process difficulty and the installation difficulty in the actual production process are achieved; and the flexible heating film can be applied, and has universal carrying property.

Description

Structure for prolonging service life of flexible heating film of lithium battery

Technical Field

The utility model relates to a lithium cell electric motor car technical field specifically is a structure of extension lithium cell flexible heating membrane life.

Background

Lithium batteries refer to batteries that contain lithium, including metallic lithium, lithium alloys, and lithium-ion, lithium polymers in an electrochemical system. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium metal batteries are generally non-rechargeable and contain lithium in a metallic state. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable.

In recent years, the electric automobile industry is rapidly developed, the quantity of new energy vehicles in China and the demand are increased year by year, the thermal management of a power battery system is also emphasized, the optimal working temperature of a lithium battery is 0-45 ℃, and when the ambient temperature is lower than 0 ℃, the charging and discharging performance and the service life of the lithium battery are greatly reduced, so that a low-temperature heating device is needed for the battery system. The current partial power battery system adopts flexible heating film mode heating, and its advantage has: firstly, the cost is low, and the flexibility is good; secondly, the heating surface has even heat.

However, the common flexible heating film has strict requirements on the flatness of the mounting surface and the mounting method, and the wrong mounting method and the mounting surface with lower flatness are easy to cause uneven heat conduction, generate local overheating, influence the service life of the flexible heating film and increase the use risk of the lithium battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a structure for prolonging the service life of a flexible heating film of a lithium battery, which improves the heat conduction uniformity, prolongs the service life of the flexible heating film and reduces the use risk of the lithium battery by adding a heat radiation aluminum plate to the flexible heating film; the heat dissipation aluminum plate is arranged, so that the purposes of improving the heat conduction uniformity of the flexible heating film and reducing the process difficulty and the installation difficulty in the actual production process are achieved; and the flexible heating film can be applied and has universal carrying property, so as to solve the problems in the background technology.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an extension lithium cell flexible heating membrane life's structure, includes the cotton board of fire-retardant bubble, the laminating of the cotton board upside of fire-retardant bubble is provided with the backing plate, the laminating of backing plate upside is provided with flexible heating film, flexible heating film one side electric connection has the power cord, flexible heating film upside is fixed to bond has the fine double-sided glue film of glass, the fine double-sided glue film upside of glass is fixed to bond has heat dissipation aluminum plate.

Preferably, chamfers are arranged at four corners of the flame-retardant foam board, and the chamfers are arc chamfers.

Preferably, heat dissipation aluminum plate both sides fixedly connected with curb plate, flexible heating film and the fine double-sided adhesive layer both sides of glass are all laminated in the curb plate surface.

Preferably, the surfaces of the two groups of side plates are provided with notches, and the notches are strip-shaped notches.

Preferably, the surface of the heat dissipation aluminum plate is provided with a fixing hole, and the fixing hole is fixedly connected to the flame-retardant foam plate through a screw.

Preferably, the glass fiber double-sided adhesive layer is replaced by a heat-conducting adhesive layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by additionally arranging the heat dissipation aluminum plate on the flexible heating film, the heat conduction uniformity is improved, the service life of the flexible heating film is prolonged, and the use risk of the lithium battery is reduced;

2. the heat dissipation aluminum plate is arranged, so that the purposes of improving the heat conduction uniformity of the flexible heating film and reducing the process difficulty and the installation difficulty in the actual production process are achieved; and the flexible heating film can be applied, and has universal carrying property.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 3 is a schematic view of the assembly structure of the present invention.

In the figure: 1. a flame retardant foam board; 2. a base plate; 3. a flexible heating film; 4. a power line; 5. a glass fiber double-sided adhesive layer; 6. a heat dissipation aluminum plate; 7. chamfering; 8. a side plate; 9. a notch; 10. a fixing hole; 11. and the heat-conducting adhesive layer.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

example 1

The utility model provides an extension lithium cell flexible heating membrane life's structure, includes fire-retardant bubble cotton board 1, and chamfer 7 has been seted up at fire-retardant bubble cotton board 1 four corners, and chamfer 7 is the circular arc chamfer.

The laminating of 1 upside of fire-retardant bubble cotton board is provided with backing plate 2, and the laminating of 2 upsides of backing plate is provided with

flexible heating film

3, and 3 one side electric connection of flexible heating film have

power cord

4, and 3 upsides of flexible heating film are fixed to be bonded and have fine double-sided adhesive layer 5 of glass, and 5 upsides of fine double-sided adhesive layer of glass are fixed to be bonded and have heat dissipation aluminum plate 6. The heat dissipation aluminum plate 6 can improve the heat conduction uniformity, prolong the service life of the flexible heating film 3 and reduce the use risk of the lithium battery. The heat dissipation aluminum plate 6 is arranged, so that the heat conduction uniformity of the flexible heating film 3 is improved, and the purposes of reducing the process difficulty and the installation difficulty in the actual production process are achieved.

6 both sides fixedly connected with curb plate 8 of heat dissipation aluminum plate, flexible heating film 3 and the 5 both sides of fine double-sided adhesive layer of glass all laminate in curb plate 8 surface. The surfaces of the two groups of side plates 8 are provided with notches 9, and the notches 9 are strip-shaped notches. The surface of the heat dissipation aluminum plate 6 is provided with a fixing hole 10, and the fixing hole 10 is fixedly connected to the flame-retardant foam plate 1 through a screw.

Example 2

The 1 upside laminating of fire-retardant bubble cotton board is provided with backing plate 2, and the 2 upside laminating of backing plate is provided with

flexible heating film

3, and 3 one side electric connection of flexible heating film have

power cord

4, and 3 upsides of flexible heating film are fixed to be bonded has heat-conducting

adhesive layer

11, and 11 upsides of heat-conducting adhesive layer are fixed to be bonded has heat aluminum plate 6. The heat dissipation aluminum plate 6 can improve the heat conduction uniformity, prolong the service life of the flexible heating film 3 and reduce the use risk of the lithium battery. The heat dissipation aluminum plate 6 is arranged, so that the heat conduction uniformity of the flexible heating film 3 is improved, and the purposes of reducing the process difficulty and the installation difficulty in the actual production process are achieved.

6 both sides fixedly connected with curb plate 8 of heat dissipation aluminum plate,

flexible heating film

3 and 11 both sides of heat-conducting adhesive layer all laminate in curb plate 8 surface. The surfaces of the two groups of side plates 8 are provided with notches 9, and the notches 9 are strip-shaped notches. The surface of the heat dissipation aluminum plate 6 is provided with a fixing hole 10, and the fixing hole 10 is fixedly connected to the flame-retardant foam plate 1 through a screw.

The working principle is as follows: through the mode of installing heat dissipation aluminum plate 6 additional for flexible heating membrane 3, improve the heat conduction homogeneity, 3 life of extension flexible heating membrane reduce lithium cell use risk, set up heat dissipation aluminum plate 6, reach and improve the 3 heat derivation degrees of consistency of flexible heating membrane, reduce the purpose of the technology degree of difficulty and the installation degree of difficulty of actual production process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an extension lithium cell flexible heating membrane life's structure, includes fire-retardant bubble cotton board (1), its characterized in that: the fire-retardant cotton board of bubble (1) upside laminating is provided with backing plate (2), backing plate (2) upside laminating is provided with flexible heating membrane (3), flexible heating membrane (3) one side electric connection has power cord (4), flexible heating membrane (3) upside is fixed to bond has fine double-sided adhesive layer of glass (5), fine double-sided adhesive layer of glass (5) upside is fixed to bond has heat dissipation aluminum plate (6).

2. The structure for extending a service life of a flexible heating film for a lithium battery as claimed in claim 1, wherein: chamfer (7) have been seted up in fire-retardant cotton board (1) four corners of steeping, chamfer (7) are the circular arc chamfer.

3. The structure for extending a service life of a flexible heating film for a lithium battery as claimed in claim 1, wherein: heat dissipation aluminum plate (6) both sides fixedly connected with curb plate (8), flexible heating membrane (3) and glass fibre two-sided adhesive layer (5) both sides are all laminated in curb plate (8) surface.

4. The structure for extending a service life of a flexible heating film for a lithium battery as claimed in claim 3, wherein: the surfaces of the two groups of side plates (8) are provided with notches (9), and the notches (9) are strip-shaped notches.

5. The structure for extending a service life of a flexible heating film for a lithium battery as claimed in claim 1, wherein: the surface of the heat dissipation aluminum plate (6) is provided with a fixing hole (10), and the fixing hole (10) is fixedly connected to the flame-retardant foam plate (1) through a screw.

6. The structure for extending a service life of a flexible heating film for a lithium battery as claimed in claim 1, wherein: the glass fiber double-sided adhesive layer (5) is replaced by a heat-conducting adhesive layer (11).