CN218525640U - Heating membrane group for heating power battery - Google Patents
Heating membrane group for heating power battery Download PDFInfo
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- CN218525640U CN218525640U CN202222711603.5U CN202222711603U CN218525640U CN 218525640 U CN218525640 U CN 218525640U CN 202222711603 U CN202222711603 U CN 202222711603U CN 218525640 U CN218525640 U CN 218525640U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a heating membrane group for power battery intensifies relates to battery technical field. The heating film group comprises an electric core assembly, the electric core assembly comprises a plurality of electric cores arranged side by side, and a heating assembly is arranged on the side surface of the electric core assembly and/or between the adjacent electric cores; the heating component comprises a heating layer, wherein the heating layer comprises a base material, an electrode and a lead; the surface of the substrate is provided with a metal oxide conducting layer, the electrode is arranged on the metal oxide conducting layer and comprises a first electrode and a second electrode, and the first electrode and the second electrode are arranged in parallel; the lead is electrically connected to the electrode. The heating film group can realize uniform heating of the module and uniform temperature distribution through the mutual matching of the heating component and the electric core component; the heat transfer area is large, the heat transfer resistance is small, the heating is rapid, and the temperature rise time is rapid; less heat loss, high heat efficiency and low power consumption.
Description
Technical Field
The utility model discloses battery technology field especially relates to a heating film group that power battery heaies up.
Background
The lithium electronic power battery has the characteristics of high energy density, long service life, high voltage and the like, and is widely applied to a power energy storage and supply system of a new energy electric automobile.
Under the low temperature environment, the performance of the lithium ion power battery is reduced, particularly the capacity of the battery is reduced, and the service life is shortened. In addition, when the lithium ion power battery is charged in a low-temperature environment, lithium is easily separated out from the negative electrode, so that the internal short circuit of the battery is caused, and safety accidents occur.
The utility model aims at keeping the lithium cell to work under the suitable temperature in order to heat the lithium cell under low temperature environment.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the purpose of the utility model is realized through following technical scheme:
the heating film group for heating the power battery comprises an electric core assembly, wherein the electric core assembly comprises a plurality of electric cores arranged side by side, and a heating assembly is arranged on the side surface of the electric core assembly and/or between the adjacent electric cores; the heating component comprises a heating layer, wherein the heating layer comprises a base material, an electrode and a lead; the surface of the substrate is provided with a metal oxide conducting layer, the electrodes are arranged on the metal oxide conducting layer and comprise a first electrode and a second electrode, and the first electrode and the second electrode are arranged in parallel; the lead is electrically connected to the electrode.
Furthermore, the thickness of the base material is 100-500 μm, and the thickness of the metal oxide conducting layer is 50-900nm.
Furthermore, the electrode is a copper sheet or an aluminum sheet, the thickness of the electrode is 20-900 μm, and the width of the electrode is more than 3 mm.
Furthermore, a silver paste layer is arranged between the electrode and the metal oxide conducting layer, and the thickness of the silver paste layer is 10-30nm.
Furthermore, the outer surface of the joint of the electrode and the lead is coated with an insulating tape; one end of the lead is also provided with a wiring terminal.
Furthermore, two sides of the heating layer are provided with insulating protective layers, and the thickness of each insulating protective layer is 5-500 μm.
Furthermore, the heating element who locates the side of electric core subassembly still include the heat-conducting layer, the heat-conducting layer set up the inboard at the zone of heating, heat-conducting layer and electric core subassembly fixed connection.
Furthermore, the heating assembly arranged on the side face of the electric core assembly further comprises a heat insulation layer, the heat insulation layer is arranged on the outer side of the heating layer, and the thickness of the heat insulation layer is 5-500 microns.
Further, the heating assembly arranged between the adjacent electric cores of the electric core assembly further comprises a heat conduction layer, and the heat conduction layer is arranged on the outer side of the insulating protection layer.
Furthermore, heat-conducting layer, zone of heating, insulating protective layer all be equipped with stress dispersion mouth.
Preferably, the stress dispersion openings of the heat conduction layer, the heating layer and the insulating protection layer are arranged at the same position.
Preferably, the areas of the stress dispersion openings of the heat conduction layer and the insulating protection layer are smaller than the area of the stress dispersion opening of the heating layer.
The heating membrane group for heating the power battery can realize uniform heating of the system and uniform temperature distribution by the mutual matching of the heating component and the electric core component; the heat transfer area is large, the heat transfer resistance is small, the heating is rapid, and the temperature rise time is rapid; the heat loss is less, the heat efficiency is high, the energy consumption is saved, and the heat conversion rate of the heating film reaches more than 98 percent. The heating film group has simple structure, small mass, thin thickness and small occupied space; the installation is simple, and the maintenance is convenient; high safety and long service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic structural view of a heating membrane module according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a heating assembly according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a heating layer according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a heating membrane module according to embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of a heating assembly disposed between adjacent electric cores in embodiment 2 of the present invention;
fig. 6 is a schematic structural view of the heating assemblies provided on both sides of the cell assembly in the cell arrangement direction according to embodiment 2 of the present invention;
fig. 7 is a schematic structural view of a heating membrane module according to embodiment 3 of the present invention;
fig. 8 is a schematic structural view of a heating membrane module according to embodiment 3 of the present invention;
fig. 9 is a schematic structural view of a heating assembly according to embodiment 3 of the present invention.
The labels in the figures illustrate:
1-an electrical core assembly; 2-electric core; 3-a heating assembly; 4-binding a belt; 5-a heat conducting layer; 6-heating layer; 7-a heat insulation layer; 8-an insulating protective layer; 9-a substrate; 10-a first electrode; 11-a second electrode; 12-a wire; 13-insulating tape; 14-terminal.
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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The terms "first," "second," "third," and the like are used solely to distinguish one from another as to indicate or imply relative importance.
Example 1
Referring to fig. 1-9, the heating membrane module for heating a power battery includes a core assembly 1, where the core assembly 1 includes a plurality of electric cores 2 arranged side by side, and a heating assembly 3 is disposed on a side surface of the core assembly 1 and/or between adjacent electric cores 2. In this embodiment, heating element 3 locates the side of electric core subassembly 1, and is specific, and heating element 3 sets up and keeps away from the both sides of electric core 2 orientation of arranging at electric core subassembly 1. The heating assembly 3 is fixed on the two side surfaces of the core assembly 1 by a binding tape 4 or a high-temperature resistant adhesive. In this embodiment, the heating assembly 3 is fixed on both side surfaces of the electric core assembly 1 by a binding tape 4. The heat generated by the heating assembly 3 is transferred to the interior of each battery cell 2 by the battery cell assembly 1 through heat conduction, so as to raise the temperature of the battery cells 2.
Specifically, the electrodes are tightly attached to the surface of the base material 9 and respectively arranged on two sides of the base material 9, and the lead 12 is connected and fixed at one end of the electrode in a welding or riveting manner and is electrically connected with the electrode. The outer surface of the joint of the electrode and the lead 12 is also coated with an insulating tape 13. The package of insulating tape 13 can protect and prevent that electricity from revealing and wire 12 drops, and insulating properties such as insulating tape 13 optional electric tape or silica gel pad are good and have the material of certain viscidity. The other end of the wire 12 is provided with a terminal 14 to facilitate electrical connection. When the wire 12 is energized, current flows from the first electrode 10 on one side of the substrate 9 to the second electrode 11 on the other side of the substrate 9, and heat is generated in the substrate 9 when the current passes through the substrate 9.
The substrate 9 can also be a conductive layer made of carbon crystal, graphene, carbon nanotube and other semiconductor materials as a heating element, and has the characteristics of high thermal efficiency, uniform heating and the like. The electrode can be made of copper sheet or aluminum sheet with thickness of 20-900 μm and width of more than 3 mm. In this embodiment, the electrode is a copper sheet with a thickness of 200 μm and a width of 4mm. A silver paste layer is arranged between the electrode and the metal oxide conducting layer, and the thickness of the silver paste layer is 10-30nm. In this embodiment, the thickness of the silver paste layer is 20nm, and the arrangement of the silver paste layer can increase the adhesion degree between the electrode and the substrate 9.
After the power supply is switched on, the heating layer 6 generates heat, and the heat is transmitted to the electric core component 1 through the insulating protection layer 8 and the heat conduction layer 5. The insulating protective layer 8 is tightly attached to two sides of the heating layer 6 and used for protecting the heating layer 6 and preventing the heating layer 6 from electric leakage, and the thickness of the insulating protective layer 8 is 5-500 mu m. In this embodiment, the thickness of the insulating protective layer 8 is 250 μm. Heat-conducting layer 5 sets up in the inboard of zone of heating 6, and is concrete, and heat-conducting layer 5 sets up the one side of keeping away from zone of heating 6 at insulating protective layer 8, and heat-conducting layer 5 is favorable to 6 surface temperature evenly distributed of zone of heating, and the heat that 6 production of zone of heating pass through heat-conducting layer 5 can evenly transmit. The heat insulation layer 7 is arranged on the outer side of the heating layer 6, specifically, the heat insulation layer 7 is arranged on one side, away from the heating layer 6, of the insulation protection layer 8 on the other side of the heating layer 6 and clings to the surface of the outer side insulation protection layer 8, and the thickness of the heat insulation layer 7 is 5-500 micrometers. In this embodiment, the thickness of the thermal insulation layer 7 is 250 μm, and the thermal insulation layer 7 can reduce the heat generated by the heating layer and dissipate the heat to the environment in a heat conduction manner, thereby reducing the energy loss of the heating layer 6 and improving the thermal efficiency of the heating assembly 3.
Specifically, the insulating protective layer 8 can be made of polyimide, and the polyimide film has the characteristics of high temperature resistance, long service life, good insulating property and the like. The heat conducting layer 5 can be made of metal film materials with good heat conducting performance such as copper foil and aluminum foil, and can also be made of flexible materials such as a heat conducting rubber mat and the like to better adhere to a heating surface and reduce heat resistance. The heat insulation layer 7 can be made of materials with good heat insulation performance such as aerogel, asbestos and the like, and can also be made of heat insulation materials with certain high temperature resistance and flame retardant capability such as mica plates and the like.
The heating layer 6, the heat conduction layer 5 and the insulation protection layer 8 are all provided with stress dispersion openings. In the present embodiment, the stress dispersion port is provided at the same position of the heating layer 6, the heat conductive layer 5, and the insulating protective layer 8. The opening position of the stress dispersion port does not generate heat, and the areas of the stress dispersion ports of the heat conduction layer 5 and the insulating protection layer 8 are smaller than the area of the stress dispersion port of the heating layer 6. When being connected heating element 3 and electric core subassembly 1, the stress dispersion mouth all sets up directly over adjacent electric core 2 junction. Electric core 2 in the electric core module 1 leads to expend with heat and contract with cold because temperature variation, and the stress that the deformation of electric core 2 produced can tear substrate 9 and lead to substrate 9 to damage. Stress that electric core 2 produced because of deformation can be dispersed in the setting of stress dispersion mouth, prevents that heating element 3 is impaired to lead to heating function unusual.
Example 2
Referring to fig. 1-9, the heating membrane module for heating a power battery includes a core assembly 1, where the core assembly 1 includes a plurality of electric cores 2 arranged side by side, and a heating assembly 3 is disposed on a side surface of the core assembly 1 and/or between adjacent electric cores 2. In this embodiment, heating element 3 is located between the side of electric core subassembly 1 and adjacent electric core 2, and specifically, heating element 3 located the side of electric core subassembly 1 sets up in electric core subassembly 1 along the both sides of electric core 2 direction of arranging. The heating component 3 is mutually compressed and fixed on the surface of the electric core by the adhesive between the adjacent electric cores 2.
Locate electric core subassembly 1 along electric core 2 direction of arranging heating element 3 of both sides of arranging including piling up heat-conducting layer 5, zone of heating 6, the insulating layer 7 that sets up and locating the insulating protective layer 8 of 6 both sides in zone of heating. Heat-conducting layer 5 set up the inboard at zone of heating 6, heat-conducting layer 5 and electric core subassembly 1 fixed connection, insulating layer 7 set up the outside at zone of heating 6.
The heating layer 6 includes a base material 9, an electrode, and a wire 12, and the wire 12 is electrically connected to the electrode. The wire 12 may be a wire whose surface is covered with an insulating layer. The surface of the base material 9 is provided with a metal oxide conductive layer. The electrodes are arranged on the metal oxide conducting layer, the electrodes comprise a first electrode 10 and a second electrode 11, and the first electrode 10 and the second electrode 11 are arranged in parallel. The thickness of the substrate 9 is 100-500 μm, and the thickness of the metal oxide conductive layer is 50-900nm. In this embodiment, the thickness of the substrate 9 is 300 μm, and the thickness of the metal oxide conductive layer is 200nm.
Specifically, the electrodes are tightly attached to the surface of the substrate 9 and respectively arranged on two sides of the substrate 9, and the lead 12 is connected and fixed to one end of the electrode by welding or riveting and electrically connected to the electrode. The outer surface of the joint of the electrode and the lead 12 is also coated with an insulating tape 13. The package of insulating tape 13 can protect and prevent that electricity from revealing and wire 12 drops, and insulating properties such as insulating tape 13 optional electric tape or silica gel pad are good and have the material of certain viscidity. The other end of the wire 12 is provided with a terminal 14 to facilitate electrical connection. When the wire 12 is energized, current flows from the first electrode 10 on one side of the substrate 9 to the second electrode 11 on the other side of the substrate 9, and heat is generated in the substrate 9 when the current passes through the substrate 9. The electrode can be made of copper sheet or aluminum sheet with thickness of 20-900 μm and width of more than 3 mm. In this embodiment, the electrode is a copper sheet with a thickness of 200 μm and a width of 4mm. A silver paste layer is arranged between the electrode and the metal oxide conducting layer, and the thickness of the silver paste layer is 10-30nm. In this embodiment, the thickness of the silver paste layer is 20nm, and the arrangement of the silver paste layer can increase the adhesion degree between the electrode and the substrate 9.
After the power supply is switched on, the heating layer 6 generates heat, and the heat is transmitted to the electric core component 1 through the insulating protection layer 8 and the heat conduction layer 5. The insulating protective layer 8 is tightly attached to two sides of the heating layer 6 and used for protecting the heating layer 6 and preventing the heating layer 6 from electric leakage, and the thickness of the insulating protective layer 8 is 5-500 mu m. In this embodiment, the thickness of the insulating protective layer 8 is 250 μm. The heat conduction layer 5 is favorable for the surface temperature of the heating layer 6 to be uniformly distributed, and the heat generated by the heating layer 6 can be uniformly transferred through the heat conduction layer 5. The heat insulating layer 7 can reduce the heat generated by the heating layer 6, and the thickness of the heat insulating layer 7 is 5-500 μm. In this embodiment, the thickness of the heat insulating layer 7 is 250 μm.
In this embodiment, heat generated by the heating assembly 1 disposed between the adjacent battery cells 2 is transferred to the surfaces of the battery cells 2 on both sides of the heating assembly 1 in a heat conduction manner. Only one side of the heat conduction layer 5 in the heating component 3 arranged on the side surface of the electric core component 1 can be used for heat transfer, so that the heat generated on only one side of the heating component 3 arranged on the side surface of the electric core component 1 is transferred to the surface of the electric core 2 in the electric core component 1. The heat insulation layer 7 of the heating component 3 arranged on the side surface of the electric core component 1 can prevent heat loss. Therefore, the heating area of the heating film group in the embodiment is larger, and the temperature rise speed is faster. Because the heating assemblies 3 arranged on the side surfaces of the electric core assemblies 1 and the heating assemblies 3 arranged between the adjacent electric cores 2 are mutually independent, the replacement of one heating assembly 3 does not influence the use of other heating assemblies 3.
Example 3
Referring to fig. 1-9, the heating membrane module for heating a power battery includes a core assembly 1, where the core assembly 1 includes a plurality of electric cores 2 arranged side by side, and a heating assembly 3 is disposed on a side surface of the core assembly 1 and/or between adjacent electric cores 2. In this embodiment, heating element 3 is located between the side of electric core subassembly 1 and adjacent electric core 2, and is specific, and heating element 3 who locates the side of electric core subassembly 1 is including setting up heating element 3 of keeping away from the both sides of electric core 2 direction of arranging and setting up at electric core subassembly 1 along the heating element 3 of the both sides of electric core 2 direction of arranging at electric core subassembly 1. One end of the heating component 3, which is far away from the two sides of the arrangement direction of the electric cores 2, of the electric core component 1 is connected with the heating component 3 which is arranged on the two sides of the arrangement direction of the electric cores 2 of the electric core component 1, and the other end of the heating component 3 is connected with the heating component 3 which is arranged between the adjacent electric cores 2. The heating assembly 3 is fixed on the surface of the electric core 2 through mutual compression and bonding glue between the adjacent electric cores 2. The heat generated by the heating assembly 3 is transferred to the interior of each battery cell 2 by the battery cell assembly 1 in a heat conduction manner, so that the temperature of the battery cells 2 is increased.
In this embodiment, the heating element 3 located in the two sides of the electric core assembly 1 away from the arrangement direction of the electric core 2 and the joint of the heating element 3 located in the two sides of the electric core assembly 1 along the arrangement direction of the electric core 2 form a first folding position, the heating element 3 located in the two sides of the electric core assembly 1 away from the arrangement direction of the electric core 2 and the joint of the heating element 3 located between the adjacent electric cores 2 form a second folding position, and the folding directions of the first folding position and the second folding position are opposite.
Locate electric core subassembly 1 and keep away from electric core 2 and arrange the heating element 3 of both sides of direction including zone of heating 6 and locate the insulating protective layer 8 of 6 both sides in zone of heating.
Locate electric core subassembly 1 along electric core 2 direction of arranging heating element 3 of both sides of arranging including piling up heat-conducting layer 5, zone of heating 6, the insulating layer 7 that sets up and locating the insulating protective layer 8 of 6 both sides in zone of heating. Heat-conducting layer 5 set up the inboard at zone of heating 6, heat-conducting layer 5 and electric core subassembly 1 fixed connection, insulating layer 7 set up in the outside of zone of heating 6.
The heating layer 6 includes a base material 9, an electrode, and a wire 12, and the wire 12 is electrically connected to the electrode. The wire 12 may be a wire whose surface is covered with an insulating layer. The surface of the substrate 9 is provided with a metal oxide conductive layer. The electrodes are arranged on the metal oxide conducting layer, the electrodes comprise a first electrode 10 and a second electrode 11, and the first electrode 10 and the second electrode 11 are arranged in parallel. The thickness of the substrate 9 is 100-500 μm, and the thickness of the metal oxide conductive layer is 50-900nm. In this embodiment, the thickness of the substrate 9 is 300 μm, and the thickness of the metal oxide conductive layer is 200nm. The electrode can be made of copper sheet or aluminum sheet with thickness of 20-900 μm and width of more than 3 mm. In this embodiment, the electrode is a copper sheet with a thickness of 200 μm and a width of 4mm. A silver paste layer is arranged between the electrode and the metal oxide conducting layer, and the thickness of the silver paste layer is 10-30nm. In this embodiment, the thickness of the silver paste layer is 20nm, and the arrangement of the silver paste layer can increase the adhesion degree between the electrode and the substrate 9.
Specifically, the electrodes are tightly attached to the surface of the base material 9 and respectively arranged on two sides of the base material 9, and the lead 12 is connected and fixed at one end of the electrode in a welding or riveting manner and is electrically connected with the electrode. The outer surface of the joint of the electrode and the lead 12 is also coated with an insulating tape 13. The package of insulating tape 13 can protect and prevent that electricity from revealing and wire 12 drops, and insulating properties such as insulating tape 13 optional electric tape or silica gel pad are good and have the material of certain viscidity. The other end of the wire 12 is provided with a terminal 14 to facilitate electrical connection. When the wire 12 is energized, current flows from the first electrode 10 on one side of the substrate 9 to the second electrode 11 on the other side of the substrate 9, and heat is generated in the substrate 9 when the current passes through the substrate 9.
In this embodiment, because the heating element 3 that connects gradually is set up, form a plurality of generate heat the region and heat a plurality of electric cores 2 simultaneously, consequently, can only remain and locate electric core subassembly 1 and arrange the wire 12 of the heating element 3 of the both sides of direction along electric core 2 as the wire of switch on, reduced the complexity of circuit wiring, simplified assembly process.
The heating layer 6 and the insulating protective layer 8 of the heating component 3 which are arranged on two sides of the electric core component 1 far away from the arrangement direction of the electric cores 2 are provided with stress dispersion ports. In the present embodiment, the stress dispersion port is provided at the same position of the heating layer 6 and the insulating protective layer 8. The opening position of the stress dispersion port does not generate heat, and the area of the stress dispersion port 8 of the insulating protective layer is smaller than that of the stress dispersion port of the heating layer 6. When the heating assemblies 3 arranged on two sides of the electric core assembly 1 far away from the arrangement direction of the electric cores 2 are connected with the electric core assembly 1, the stress dispersion ports are arranged right above the joints of the adjacent electric cores 2. The electric core 2 in the electric core assembly 1 expands with heat and contracts with cold due to temperature change, and the base material 9 can be torn by the stress generated by the deformation of the electric core 2, so that the base material 9 is damaged. The stress that electric core 2 produced because of the deformation can be dispersed in the setting of stress dispersion mouth, prevents that heating element 3 is impaired to lead to heating function unusual.
In summary, the heating film assembly of the present embodiment can achieve uniform heating and uniform temperature distribution of the system through the mutual cooperation of the heating assembly and the electric core assembly; the heat transfer area is large, the heat transfer resistance is small, the heating is rapid, and the temperature rise time is rapid; the heat loss is less, the heat efficiency is high, the energy consumption is saved, and the heat conversion rate of the heating film reaches more than 98 percent. The heating film group has simple structure, small mass, thin thickness and small occupied space; the installation is simple, and the maintenance is convenient; high safety and long service life.
In another embodiment, the heating layer of the heating assembly is made of nichrome or brass heating wire, the heating wire is coiled and uniformly distributed on the film substrate to form a heating film, the film substrate is made of polyimide, and two ends of the heating wire are electrically connected with the lead. After the power supply is switched on to form an electric loop, the electric heating wire generates heat when current passes through the electric heating wire. The metal heating wire heating film has the characteristics of high heating temperature and high temperature resistance, but the temperature uniformity is not as good as that of a heating body which is made of a conductive layer made of carbon crystal, graphene, carbon nano tubes, metal oxide and other semiconductor materials.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A heating film group for heating a power battery comprises an electric core assembly, wherein the electric core assembly comprises a plurality of electric cores arranged side by side, and the heating film group is characterized in that the heating assembly is arranged on the side surface of the electric core assembly and/or between the adjacent electric cores; the heating component comprises a heating layer, wherein the heating layer comprises a base material, an electrode and a lead; the surface of the substrate is provided with a metal oxide conducting layer, the electrode is arranged on the metal oxide conducting layer and comprises a first electrode and a second electrode, and the first electrode and the second electrode are arranged in parallel; the lead is electrically connected to the electrode.
2. The power battery heating membrane group as claimed in claim 1, wherein the thickness of the substrate is 100-500 μm, and the thickness of the metal oxide conducting layer is 50-900nm.
3. The heating membrane group for heating the power battery as claimed in claim 2, wherein the electrode is a copper sheet or an aluminum sheet, the thickness of the electrode is 20-900 μm, and the width of the electrode is more than 3 mm.
4. The power battery heating module according to claim 3, wherein a silver paste layer is arranged between the electrode and the metal oxide conductive layer, and the thickness of the silver paste layer is 10-30nm.
5. The heating membrane group for heating the power battery as claimed in claim 4, wherein the outer surface of the joint of the electrode and the lead is coated with an insulating tape; one end of the lead is also provided with a wiring terminal.
6. The heating membrane group for heating the power battery as claimed in claim 5, wherein the heating layer is provided with insulating protective layers on two sides, and the thickness of the insulating protective layers is 5-500 μm.
7. The heating membrane module for heating power battery as claimed in claim 6, wherein the heating module disposed at the side of the electric core module further comprises a heat conducting layer, the heat conducting layer is disposed at the inner side of the heating layer, and the heat conducting layer is fixedly connected to the electric core module.
8. The heating membrane group for heating the power battery as claimed in claim 7, wherein the heating module arranged on the side surface of the electric core module further comprises a heat insulation layer, the heat insulation layer is arranged on the outer side of the heating layer, and the thickness of the heat insulation layer is 5-500 μm.
9. The power battery heating module of claim 6, wherein the heating module disposed between adjacent cells of the cell assembly further comprises a heat conducting layer, and the heat conducting layer is disposed outside the insulating protective layer.
10. The power battery warming heating membrane module as claimed in claim 7, wherein the heat conduction layer, the heating layer and the insulating protection layer are provided with stress dispersion openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222711603.5U CN218525640U (en) | 2022-10-14 | 2022-10-14 | Heating membrane group for heating power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222711603.5U CN218525640U (en) | 2022-10-14 | 2022-10-14 | Heating membrane group for heating power battery |
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| Publication Number | Publication Date |
|---|---|
| CN218525640U true CN218525640U (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222711603.5U Active CN218525640U (en) | 2022-10-14 | 2022-10-14 | Heating membrane group for heating power battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN218525640U (en) |
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2022
- 2022-10-14 CN CN202222711603.5U patent/CN218525640U/en active Active
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