CN113708012A - Lithium ion battery module structure of electric automobile - Google Patents
Lithium ion battery module structure of electric automobile Download PDFInfo
- Publication number
- CN113708012A CN113708012A CN202110990877.XA CN202110990877A CN113708012A CN 113708012 A CN113708012 A CN 113708012A CN 202110990877 A CN202110990877 A CN 202110990877A CN 113708012 A CN113708012 A CN 113708012A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- module structure
- battery module
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 38
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 71
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 229920003023 plastic Polymers 0.000 claims abstract description 30
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 5
- 239000005030 aluminium foil Substances 0.000 claims abstract description 4
- 239000003822 epoxy resin Substances 0.000 claims abstract description 4
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a lithium ion battery module structure of an electric automobile, which comprises: plastic part, pole flow sheet and heating wire. Two ends of the lithium ion battery cell are respectively fixed on the two plastic parts to form a battery pack with a set shape, the two plastic parts are fastened through bolts, and epoxy resin structural adhesive is coated between the plastic parts and the battery cell to fix the battery cell. The pole pieces are arranged at the end parts of the lithium ion battery cell and cover the end face of the plastic part, the pole pieces are arranged on the pole pieces, and the pole pieces are connected with electrodes of the battery cell in a spot welding mode. Set up the recess on the polar current piece, the recess is embedded to be equipped with the heater strip to it is fixed to use the aluminium foil sticky tape after the heater strip circular telegram produced the heat, through the polar current piece is with the leading-in electric chip of heat, in order to heat the electric core of group battery. The invention can reduce the production cost of the battery and increase the price advantage of the electric automobile.
Description
Technical Field
The invention relates to the technical field of automobile batteries, in particular to a lithium ion battery module structure of an electric automobile.
Background
The performance and the service life of the lithium ion battery used by the conventional electric automobile are greatly influenced by the working temperature, and the performance and the service life of the lithium ion battery can be reduced by overhigh and overlow temperature. The battery core performance of the lithium ion battery is different at different temperatures, and the battery core attenuation is finally caused by overlarge temperature difference, so that the service performance and the service life of the battery pack are influenced. The battery core is heated in an actual low-temperature environment, so that the safe use of the battery is ensured. The scheme of heating to electric core now is the heating film scheme, heats after the heating film circular telegram to heat electric core. The heating film is mainly divided into a PI heating film and an epoxy plate heating film, the two heating films are mainly made of different insulating outer skin materials, and heating metal wires are arranged inside the heating films. For a cylindrical cell, a heating film is used for winding and heating, and a lot of cost is needed.
Disclosure of Invention
The invention provides a lithium ion battery module structure of an electric automobile, which solves the problem of high cost of heating a lithium ion battery by a heating film, can reduce the production cost of the battery, and increases the price advantage of the electric automobile.
In order to achieve the above purpose, the invention provides the following technical scheme:
a lithium ion battery module structure of an electric vehicle comprises: plastic parts, polar flow sheets and heating wires;
fixing two ends of a lithium ion battery cell on the two plastic parts respectively to form a battery pack with a set shape, fastening the two plastic parts through bolts, and coating epoxy resin structural adhesive between the plastic parts and the battery cell to fix the battery cell;
the pole piece is arranged at the end part of the lithium ion cell and covers the end face of the plastic part, the pole piece is arranged on the pole piece, and the pole piece is connected with the electrode of the cell in a spot welding manner;
set up the recess on the polar current piece, the recess is embedded to be equipped with the heater strip to it is fixed to use the aluminium foil sticky tape after the heater strip circular telegram produced the heat, through the polar current piece is with the leading-in electric chip of heat, in order to heat the electric core of group battery.
Preferably, the polar current sheet is made of an electric conduction heat conduction material, can resist the temperature of more than 60 ℃, and has a heat conduction coefficient of more than 100W/m.K.
Preferably, the material of the polar flow sheet is metallic aluminum.
Preferably, the pole piece is of a stamping structure, and the periphery of the pole piece is provided with a hollow structure.
Preferably, the heating wire includes: an insulating outer skin, a glass fiber rope, a resistance wire, a lead and a connector;
the insulating outer skin is made of a silica gel material, the resistance wire is made of a copper-nickel alloy, and the lead is a copper wire;
the resistance wire is wound on the glass fiber rope, and the surface of the resistance wire is protected by the insulating outer skin;
the lead and the resistance wire are connected together in a crimping mode, and the connector is connected with an external circuit.
Preferably, at least one groove is formed between two adjacent rows of battery cells.
Preferably, the depth of the groove is 2.6 mm.
Preferably, the grooves are arranged on the polar flow sheet in a serpentine path.
Preferably, a gap is formed between the polar flow sheet and the plastic part.
Preferably, the heating wires with different resistance values are adopted for heating in different electric connection areas, and organic silicon heat-conducting glue is adopted to cover the exposed heating wires between the electric connection cross-piece areas, so that heat generated by the heating wires is guided into the polar flow pieces through the organic silicon heat-conducting glue.
The invention provides a lithium ion battery module structure of an electric automobile, wherein an end part of a battery cell is provided with a polar flow sheet, a groove is arranged on the polar flow sheet, and a heating wire is arranged in the groove so as to heat the battery cell of a battery pack. The problem of high cost exists in lithium ion battery adopts the heating film heating is solved, battery manufacturing cost can be reduced, the price advantage of electric automobile is increased.
Drawings
In order to more clearly describe the specific embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below.
Fig. 1 is a schematic diagram of a lithium ion battery module structure of an electric vehicle according to the present invention.
Fig. 2 is a schematic view of a polar flow sheet provided by the present invention.
Fig. 3 is a schematic view of a heating wire provided by the present invention.
Detailed Description
In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.
The problem of high cost exists to current lithium ion battery adopts the heating film heating. The invention provides a lithium ion battery module structure of an electric automobile, wherein an end part of a battery cell is provided with a polar flow sheet, a groove is arranged on the polar flow sheet, and a heating wire is arranged in the groove so as to heat the battery cell of a battery pack. The problem of high cost exists in lithium ion battery adopts the heating film heating is solved, battery manufacturing cost can be reduced, the price advantage of electric automobile is increased.
As shown in fig. 1 and 2, a lithium ion battery module structure of an electric vehicle includes: plastic part 1, polar flow sheet 2 and heating wire 3. Two ends of the lithium ion battery cell are respectively fixed on the two plastic parts to form a battery pack with a set shape, the two plastic parts are fastened through bolts, and epoxy resin structural adhesive is coated between the plastic parts and the battery cell to fix the battery cell. The pole pieces are arranged at the end parts of the lithium ion battery cell and cover the end faces of the plastic parts, the pole pieces 22 are arranged on the pole pieces 2, and the pole pieces 22 are connected with electrodes of the battery cell in a spot welding mode. Set up recess 21 on the polar current piece 2, recess 21 is embedded to be equipped with heater strip 3 to it is fixed to use the aluminium foil sticky tape after the heater strip circular telegram produced the heat, through the polar current piece is with the leading-in electric chip of heat, with the electric core to the group battery heat.
Specifically, as shown in fig. 1, the plastic part is used for fixing the battery core and grouping, the polar current sheet is used for conducting current and heat, the heating wire is a heating part, two ends of the battery core are respectively fixed on two plastic parts, the two plastic parts are tightened by bolts, and then the battery is grouped. The coating has epoxy structure to glue between working of plastics and the electric core for fixed electric core prevents that electric core from rocking or the pine from taking off. As shown in fig. 1 and fig. 2, the pole flow sheet not only plays a role of electrically connecting the cells, but also plays a role of fixing the heating wire and conducting heat. The pole piece and the battery core are connected in a welding mode. The heating wire generates heat after being electrified, and the heat is conducted into the battery core through the polar current sheet, so that the heating effect is achieved. The structure can solve the problem that the lithium ion battery is high in cost due to the heating of the heating film, can reduce the production cost of the battery, and increases the price advantage of the electric automobile.
The shapes of the module and the plastic part are not limited to the shape of fig. 1, and other shapes can be designed according to actual conditions. The cells are not limited to cylindrical cells, and cells of other shapes may be used, such as square cells. The structural adhesive coated between the battery cell and the plastic part can also be structural adhesive made of other materials, the shear strength of the structural adhesive after curing is not less than 1MPa, and the battery cell of the module is not shaken or loosened in the vibration process.
The polar current sheet is made of electric and heat conducting materials, can resist the temperature of more than 60 ℃, and has the heat conducting coefficient of more than 100W/m.K.
Further, the material of the polar flow sheet is metal aluminum.
As shown in fig. 2, the pole piece is of a stamping structure, and a hollow structure is arranged on the periphery of the pole piece.
As shown in fig. 3, the heating wire 3 includes: an insulating outer skin, a glass fiber rope, a resistance wire, a lead and a connector 31. The insulating outer skin is made of silica gel, the resistance wire is made of copper-nickel alloy, and the lead is a copper wire. The resistance wire is wound on the glass fiber rope, and the surface of the resistance wire is protected by the insulating outer skin. The lead and the resistance wire are connected together in a crimping mode, and the connector is connected with an external circuit.
In practical application, the diameter of the heating wire can be redesigned according to the actual design requirement. The material of the outer surface of the heating wire is not limited to silica gel, but the outer surface must play an insulating role, and the insulation resistance value needs to exceed 550 MOmega under the voltage of 500V. In addition, the outer skin also needs to meet the flame retardant requirement, achieve the UL-94V-0 grade flame retardant requirement and can resist the temperature of more than 100 ℃. The material of the resistance wire is not limited to the copper-nickel alloy in the present embodiment, and other metal materials may be used, but it must be able to effectively generate heat and resist a temperature of 100 ℃. The connection mode of the lead and the resistance wire is not limited to the mode in the embodiment, and other connection modes can be used, so that the drawing force which can be borne after connection is required to be more than 50N. The heating wire can be fixed by other methods, such as fixing the heating wire by using a heat-conducting structural adhesive. The fixed heating wire is required to be tightly attached to the groove of the polar flow sheet and loosened and fallen after vibration. If the aluminum foil tape is used for fixing, the tape must resist the high temperature of more than 150 ℃, and the heating wire can still be well fixed after being impacted by high and low temperature without loosening and falling off. The aluminum foil tape must be insulated, and the insulation resistance value exceeds 550M omega under the voltage of more than 500V. The adhesive tape must be flame retardant to meet the flame retardant requirement of UL 94V-0. If the heat conducting structural adhesive is fixed in other modes, the heat conducting structural adhesive is taken as an example, the adhesive material does not chemically react with the polar flow sheet and the heating wire except for meeting the requirements of high temperature resistance, temperature impact resistance, insulating property and flame retardant property, and the heat conducting coefficient is not lower than 0.5W/(m.K).
Further, at least one groove is formed between two adjacent lines of the battery cells.
Further, the depth of the groove is 2.6 mm. Of course, the depth of the groove is not limited to 2.6mm, the diameter of the heating wire can be 2.3mm, and the depth of the groove needs to be larger than the outer diameter of the heating wire, so that the surface of the heating wire is prevented from protruding beyond the surface of the polar flow sheet.
Further, the grooves are arranged on the polar flow sheet in a serpentine path. In practical application, the shape of the grooves of the polar flow sheet adopts a snake shape, and longer heating wires can be arranged compared with linear grooves, so that the heating effect can be improved.
Furthermore, a gap is arranged between the polar flow sheet and the plastic part. In practical application, the polar flow sheet and the plastic piece have a clearance of 1 mm.
Furthermore, the heating wires with different resistance values are adopted to heat in different electric connection areas, and organic silicon heat-conducting glue is adopted to cover the exposed heating wires between the electric connection cross-piece areas, so that heat generated by the heating wires is led into the polar flow pieces through the organic silicon heat-conducting glue.
In practical application, the heating wires can be designed into segmented heating wires, and in order to ensure the heat management performance of the whole battery pack, one heating wire can be designed into different resistance values in different areas according to design requirements, so that the effect of accurately controlling heating to reduce the temperature difference of a battery pack system is achieved. In addition, in order to effectively prevent the heating wire from being burnt dry, the resistance wires in areas with dry burning risks, such as a sheet spanning area, a wire outlet and the like, can be designed to be pure copper wires or metal wires with less heat productivity, and the resistance value of the heating wire in the area is reduced. Between each electric connecting plate area, the heating wire is exposed to one section, and the risk of dry burning exists. Therefore, the heating wires are covered by filling the organic silicon heat-conducting glue, and the heat of the heating wires at the dry burning section is led to the aluminum electrode flow sheet by utilizing the heat-conducting glue. The thermal conductivity coefficient of the thermal conductive adhesive is not lower than 0.5W/(m.K), and the insulation resistance value exceeds 550M omega under the voltage of more than 500V.
The invention provides a lithium ion battery module structure of an electric automobile, wherein an end part of a battery cell is provided with a polar current sheet, a groove is formed in the polar current sheet, and a heating wire is arranged in the groove to heat the battery cell of a battery pack. The problem of high cost exists in lithium ion battery adopts the heating film heating is solved, battery manufacturing cost can be reduced, the price advantage of electric automobile is increased.
The construction, features and functions of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings, and all equivalent embodiments modified or modified by the spirit and scope of the present invention should be protected without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides an electric automobile's lithium ion battery module structure which characterized in that includes: plastic parts, polar flow sheets and heating wires;
fixing two ends of a lithium ion battery cell on the two plastic parts respectively to form a battery pack with a set shape, fastening the two plastic parts through bolts, and coating epoxy resin structural adhesive between the plastic parts and the battery cell to fix the battery cell;
the pole piece is arranged at the end part of the lithium ion cell and covers the end face of the plastic part, the pole piece is arranged on the pole piece, and the pole piece is connected with the electrode of the cell in a spot welding manner;
set up the recess on the polar current piece, the recess is embedded to be equipped with the heater strip to it is fixed to use the aluminium foil sticky tape after the heater strip circular telegram produced the heat, through the polar current piece is with the leading-in electric chip of heat, in order to heat the electric core of group battery.
2. The lithium ion battery module structure of claim 1, wherein the current sheet is made of an electrically and thermally conductive material, and is resistant to temperatures of 60 ℃ or higher and has a thermal conductivity greater than 100W/m-K.
3. The lithium ion battery module structure of the electric vehicle according to claim 2, wherein the material of the electrode flow sheet is metal aluminum.
4. The lithium ion battery module structure of claim 3, wherein the pole piece is of a stamped structure, and a hollowed structure is arranged on the periphery of the pole piece.
5. The lithium ion battery module structure of an electric vehicle according to claim 4, wherein the heating wire comprises: an insulating outer skin, a glass fiber rope, a resistance wire, a lead and a connector;
the insulating outer skin is made of a silica gel material, the resistance wire is made of a copper-nickel alloy, and the lead is a copper wire;
the resistance wire is wound on the glass fiber rope, and the surface of the resistance wire is protected by the insulating outer skin;
the lead and the resistance wire are connected together in a crimping mode, and the connector is connected with an external circuit.
6. The lithium ion battery module structure of claim 5, wherein at least one groove is formed between two adjacent rows of battery cells.
7. The lithium ion battery module structure of an electric vehicle of claim 6, wherein the depth of the groove is 2.6 mm.
8. The lithium ion battery module structure of claim 7, wherein the grooves are arranged on the polar flow sheet in a serpentine path.
9. The lithium ion battery module structure of any one of claims 1 to 8, wherein a gap is provided between the pole piece and the plastic member.
10. The lithium ion battery module structure of claim 9, wherein the heating wires with different resistances are used in different electrical connection areas for heating, and silicone heat conducting glue is used to cover the exposed heating wires between the electrical connection span areas, so that heat generated by the heating wires is guided to the polar flow sheet through the silicone heat conducting glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110990877.XA CN113708012A (en) | 2021-08-26 | 2021-08-26 | Lithium ion battery module structure of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110990877.XA CN113708012A (en) | 2021-08-26 | 2021-08-26 | Lithium ion battery module structure of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113708012A true CN113708012A (en) | 2021-11-26 |
Family
ID=78655507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110990877.XA Pending CN113708012A (en) | 2021-08-26 | 2021-08-26 | Lithium ion battery module structure of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113708012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122625A (en) * | 2021-11-29 | 2022-03-01 | 蜂巢能源科技有限公司 | Connecting device of battery module and battery module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202231583U (en) * | 2011-09-26 | 2012-05-23 | 江阴市玛斯特橡塑电气有限公司 | Motor moisture-proof heating band |
| CN203884010U (en) * | 2014-04-03 | 2014-10-15 | 戴文全 | Pipeline electric heat tracing insulation constant-power ribbon heater |
| WO2021032608A1 (en) * | 2019-08-19 | 2021-02-25 | Designwerk Products Ag | Battery pack |
| CN112768843A (en) * | 2021-01-27 | 2021-05-07 | 华霆（合肥）动力技术有限公司 | Collector plate and battery module |
| CN113300036A (en) * | 2021-05-19 | 2021-08-24 | 安徽江淮汽车集团股份有限公司 | Battery module, integrated battery module and car |
-
2021
- 2021-08-26 CN CN202110990877.XA patent/CN113708012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202231583U (en) * | 2011-09-26 | 2012-05-23 | 江阴市玛斯特橡塑电气有限公司 | Motor moisture-proof heating band |
| CN203884010U (en) * | 2014-04-03 | 2014-10-15 | 戴文全 | Pipeline electric heat tracing insulation constant-power ribbon heater |
| WO2021032608A1 (en) * | 2019-08-19 | 2021-02-25 | Designwerk Products Ag | Battery pack |
| CN112768843A (en) * | 2021-01-27 | 2021-05-07 | 华霆（合肥）动力技术有限公司 | Collector plate and battery module |
| CN113300036A (en) * | 2021-05-19 | 2021-08-24 | 安徽江淮汽车集团股份有限公司 | Battery module, integrated battery module and car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122625A (en) * | 2021-11-29 | 2022-03-01 | 蜂巢能源科技有限公司 | Connecting device of battery module and battery module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016091133A1 (en) | Heat management device of electro-heating component | |
| WO2014122905A1 (en) | Battery system | |
| TWI445227B (en) | Secondary battery pack of novel structure | |
| CN106356586A (en) | Heat dissipation and heating integrated power battery module | |
| CN112397812B (en) | Battery heating film and lithium ion power battery | |
| CN211265578U (en) | Snake-shaped plate heating film for cylindrical battery cell module | |
| WO2022001660A1 (en) | Cell lead-out piece, battery, and electric vehicle | |
| CN108923099A (en) | A kind of novel power battery mould group and its assembly technology | |
| CN218569029U (en) | Battery core, battery module and battery pack | |
| CN111430827A (en) | Battery core temperature acquisition device, busbar and battery core | |
| CN113708012A (en) | Lithium ion battery module structure of electric automobile | |
| CN112864534A (en) | Battery core assembly, battery core module, battery and device using battery | |
| CN210866327U (en) | Soft packet of power battery module of passenger car | |
| CN108511846A (en) | A kind of battery modules fixed structure and battery pack | |
| CN216980686U (en) | Battery package heating film, battery package and vehicle | |
| CN213459887U (en) | Battery heating film and lithium ion power battery | |
| CN216698554U (en) | Battery module, battery package and electric automobile | |
| CN110635083A (en) | Rapid heating battery module | |
| CN106803557B (en) | Battery module and car | |
| CN213342726U (en) | Heating film structure and battery module | |
| CN215816311U (en) | Battery cell fusing structure, battery and automobile | |
| CN113300036A (en) | Battery module, integrated battery module and car | |
| CN216928716U (en) | Heating device of battery module | |
| CN203134928U (en) | Lithium ion battery pack shunting and heat radiating device in vacuum environment | |
| CN210516780U (en) | Battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211126 |
|
| RJ01 | Rejection of invention patent application after publication |