CN112234258A - Lithium ion square module and electric vehicle - Google Patents
Lithium ion square module and electric vehicle Download PDFInfo
- Publication number
- CN112234258A CN112234258A CN202011107382.XA CN202011107382A CN112234258A CN 112234258 A CN112234258 A CN 112234258A CN 202011107382 A CN202011107382 A CN 202011107382A CN 112234258 A CN112234258 A CN 112234258A
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- assembly
- electric core
- lithium ion
- busbar
- end plate
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- 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
- H01M10/058—Construction or manufacture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- 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
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- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- 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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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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
- 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
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The embodiment of the invention provides a lithium ion square module and an electric vehicle, and relates to the field of power batteries. The lithium ion square module comprises an electric core component, a shell component, a heat insulation buffer piece, an end plate component, a bus bar component and a sampling circuit board. The electric core assembly is arranged in the shell assembly, the heat insulation buffer is arranged on the side surface of the electric core assembly and positioned between the electric core assembly and the shell assembly, and the end plate assembly is connected with the shell assembly; the busbar subassembly includes pencil division board, series connection busbar, insulating part and output level busbar, and the pencil division board is connected with the end plate subassembly, and series connection busbar, output level busbar are connected with the pencil division board to be connected with electric core subassembly electricity, the insulating part is connected with the pencil division board. The sampling circuit board is connected with the electric core component and is used for acquiring sampling parameters of the electric core component. The embodiment of the invention can fully utilize the design space, thereby improving the space utilization rate of the module; and the assembly is convenient and simple.
Description
Technical Field
The invention relates to the field of power batteries, in particular to a lithium ion square module and an electric vehicle.
Background
The power battery module can provide power output for the electric vehicle, and the existing lithium ion square module has the problem of low space utilization rate.
Disclosure of Invention
The invention aims to provide a lithium ion square module and an electric vehicle, which can make full use of the design space, thereby improving the space utilization rate of the module; and the assembly is convenient and simple.
The embodiment of the invention is realized by the following steps:
in a first aspect, an embodiment of the present invention provides a lithium ion square module, including a core assembly, a shell assembly, a heat insulation buffer, an end plate assembly, a bus bar assembly, and a sampling circuit board;
the electric core assembly is arranged in the shell assembly, the heat insulation buffer is arranged on the side surface of the electric core assembly and positioned between the electric core assembly and the shell assembly, and the end plate assembly is connected with the shell assembly;
the bus bar assembly is arranged in the shell assembly and is positioned between the end part of the electric core assembly and the end plate assembly, the bus bar assembly comprises a wiring harness isolation plate, a serial bus bar, an insulating piece and an output-stage bus bar, the wiring harness isolation plate is matched with the end plate assembly in a buckling mode, the serial bus bar is connected with the wiring harness isolation plate and is electrically connected with the electric core assembly, the insulating piece is connected with the wiring harness isolation plate, and the serial bus bar is arranged in an insulating mode with the output-stage bus bar through the insulating piece;
the sampling circuit board is connected with the electric core assembly and used for acquiring sampling parameters of the electric core assembly.
In an optional embodiment, a plurality of installation parts are arranged on the wire harness isolation plate side by side, and a plurality of serial busbars are correspondingly connected with the installation parts and are respectively electrically connected with the electric core assembly.
In an alternative embodiment, the busbar assembly further includes a fixing member, and the insulating member is connected to the wire harness isolation plate by the fixing member and insulates the series busbar and the output stage busbar from each other.
In an alternative embodiment, the end plate assembly includes a metal end plate and an insulating plastic member, the metal end plate is connected to the housing assembly, the insulating plastic member is in snap fit with the wire harness isolation plate and encloses a cladding space, and the series bus bar and the output stage bus bar are located in the cladding space.
In an alternative embodiment, the insulating plastic part is provided with a first covering part, the wire harness isolation plate is provided with a second covering part, and the first covering part and the second covering part are buckled and matched so that the insulating plastic part and the wire harness isolation plate enclose the covering space.
In an alternative embodiment, a plurality of mounting holes are formed in the metal end plate, and plastic posts correspondingly connected with the mounting holes are formed in the insulating plastic.
In optional embodiment, the sampling circuit board includes circuit board, sampling terminal and the cotton piece that compresses tightly of bubble, the sampling terminal with the circuit board electricity is connected, and with the middle part of electricity core subassembly is connected, is used for acquireing the sampling parameter of electricity core subassembly, the cotton piece that compresses tightly of bubble with the sampling terminal is connected.
In an optional embodiment, the cell assembly comprises a lithium ion square module and further comprises an insulating plate, the insulating plate is arranged on the top surface of the cell assembly and located between the shell assembly and the cell assembly, and the foam pressing member is located between the insulating plate and the sampling terminal.
In an alternative embodiment, the housing assembly includes a U-shaped lower housing and a module upper cover, the U-shaped lower housing is connected to the module upper cover, and the end plate assembly is connected to the U-shaped lower housing and the module upper cover.
In a second aspect, an embodiment of the present invention provides an electric vehicle including the lithium ion square module according to any one of the foregoing embodiments.
The embodiment of the invention provides a lithium ion square module and an electric vehicle, wherein the lithium ion square module comprises: the lithium ion square module comprises an electric core component, a shell component, a heat insulation buffer piece, an end plate component, a bus bar component and a sampling circuit board. The busbar assembly comprises a wiring harness isolation plate, a series busbar, an insulating piece and an output-stage busbar, the wiring harness isolation plate and the end plate assembly form buckling position matching, the series busbar is connected with the wiring harness isolation plate and is electrically connected with the electric core assembly, and the insulating piece is connected with the wiring harness isolation plate and isolates the series busbar from the output-stage busbar. The heat insulation buffer piece can play a heat insulation role and can absorb the deformation of the electric core caused by thermal expansion. The sampling circuit board can realize the sampling to electric core subassembly parameter, and this sampling parameter can be for the temperature of electric core subassembly to be convenient for according to the temperature data of electric core subassembly, in time adjust the output of module. The wiring harness isolation plate is connected with the serial bus bar, and the serial bus bar and the output-stage bus bar are electrically connected with the battery cells in the battery cell assembly to realize the serial connection of the battery cells; the insulating piece is used for insulating the output-stage bus bar and the series bus bar. In the embodiment of the invention, the wiring harness isolation plate, the serial bus bar and the output-stage bus bar are arranged in a laminated manner, so that the space can be fully utilized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a lithium ion square module according to an embodiment of the present invention;
FIG. 2 is an exploded view of the lithium-ion square module shown in FIG. 1;
FIG. 3 is a schematic view of the busbar assembly of FIG. 2;
fig. 4 is a schematic structural view of the harness dividing plate in fig. 3;
FIG. 5 is a schematic structural view of the end plate assembly of FIG. 2;
fig. 6 is a schematic structural view of an insulating plastic member and a harness partition plate according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the sampling assembly of FIG. 2;
fig. 8 is a schematic cross-sectional structure view of the lithium ion square module in fig. 2.
Icon: 100-lithium ion square module; 110-an electrical core assembly; 120-a housing assembly; a 121-U-shaped lower shell; 122-module top cover; 130-a heat insulating buffer; 140-an end plate assembly; 141-metal end plates; 1411-mounting holes; 142-an insulating plastic part; 1421-first cladding; 1422-plastic column; 150-a busbar assembly; 151-harness insulation panel; 1511-mounting part; 1512-a via; 1513-second cladding; 152-a series bus; 153-an insulator; 154-output stage bus; 155-a fixing member; 160-a sampling circuit board; 161-a circuit board; 163-foam compression; 170-an insulating plate; 180-heat conducting glue.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
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. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
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; can be mechanically or electrically 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.
Referring to fig. 1 and 2, a lithium ion square module 100 is provided according to an embodiment of the invention. The lithium ion square module 100 can be applied to electric vehicles such as new energy vehicles and the like, and can be used as a power battery. The lithium ion square module 100 provided by the embodiment of the invention can make full use of the design space, thereby improving the space utilization rate of the module; and the assembly is convenient and simple.
In an embodiment of the present invention, the lithium ion square module 100 includes a core assembly 110, a housing assembly 120, a heat insulating buffer 130, an end plate assembly 140, a bus bar assembly 150, and a sampling circuit board 160. The cell assembly 110 is arranged in the shell assembly 120, the heat insulation buffer 130 is arranged at the side of the cell assembly 110 and positioned between the cell assembly 110 and the shell assembly 120, and the end plate assembly 140 is connected with the shell assembly 120; the bus bar assembly 150 is disposed within the housing assembly 120 and between the end of the core assembly 110 and the end plate assembly 140.
Referring to fig. 3, the bus bar assembly 150 includes a harness isolation plate 151, a serial bus bar 152, an insulator 153, and an output-stage bus bar 154, the harness isolation plate 151 and the end plate assembly 140 are engaged with each other, the serial bus bar 152 is connected to the harness isolation plate 151 and electrically connected to the core assembly 110, the insulator 153 is connected to the harness isolation plate 151, and the serial bus bar 152 is insulated from the output-stage bus bar 154 by the insulator 153. The sampling circuit board 160 is connected to the electric core assembly 110 for obtaining sampling parameters of the electric core assembly 110.
It should be understood that, in the embodiment of the present invention, the housing assembly 120 may enclose a space in which the electric core assembly 110, the bus bar assembly 150, and the like are fitted, and the end plate assembly 140 may close both ends of the space open. The heat insulation buffer 130 is located between the side edge of the cell assembly 110 and the housing assembly 120, and can play a role in heat insulation and absorb the deformation of the cell caused by thermal expansion; in addition, in the embodiment of the present invention, the thermal insulation buffer 130 may also be disposed between two adjacent battery cells, so as to insulate the two battery cells and absorb the cell deformation. The busbar assembly 150 is used for being electrically connected with the electric core assembly 110, wherein the wiring harness isolation plate 151 is connected with the serial busbar 152, and the serial busbar 152 is electrically connected with the electric cores in the electric core assembly 110, so that the electric cores are connected in series; the output-stage bus bar 154 and the series bus bar 152 are respectively connected with the cell assembly 110, and are used for outputting module voltage and current; the insulator 153 is used for insulating the output stage from the serial bus 152. In the embodiment of the present invention, the harness isolation plate 151, the serial bus bar 152, the insulator 153, and the output stage bus bar 154 are stacked, and the space can be fully utilized. Sampling circuit board 160 can realize the sampling to electric core subassembly 110 parameter, and this sampling parameter can be for electric core subassembly 110's temperature to be convenient for according to electric core subassembly 110's temperature data, in time adjust the output of module.
Referring to fig. 4, in an alternative embodiment, a plurality of mounting portions 1511 are arranged side by side on the harness isolation plate 151, and a plurality of serial bus bars 152 are correspondingly connected to the plurality of mounting portions 1511 and are electrically connected to the electric core assembly 110 respectively.
Optionally, a through hole 1512 is provided in the mounting portion 1511, and when the serial bus bar 152 is correspondingly mounted on the mounting portion 1511, the serial bus bar 152 can be exposed from the through hole 1512, thereby facilitating connection between the serial bus bar 152 and the battery cell.
Further, the mounting portion 1511 is substantially a groove-like structure corresponding to the serial bus bar 152, and the through hole 1512 is provided at the bottom of the groove-like structure. The connection between the serial bus 152 and the mounting portion 1511 may be a snap fit or the like, and the serial bus may be snapped into a groove-like structure. The insulator 153 is connected to the harness isolation plate 151, and can isolate the series bus 152 from the output stage bus 154. Optionally, the busbar assembly 150 may further include a fixing member 155, and the insulating member 153 is connected to the harness isolation plate 151 through the fixing member 155 and insulates the series busbar 152 from the series busbar 152. The fixing member 155 may be a bolt, a snap, or a pin, and the insulating member 153 may be connected to the harness isolation plate 151. As shown in the figure, the fixing member 155 is a buckle, corresponding hole grooves are formed in the insulating member 153 and the wiring harness isolation plate 151, and the buckle is clamped into the corresponding hole grooves of the insulating member 153 and the wiring harness isolation plate 151, for example, by riveting, the insulating member 153 and the wiring harness isolation plate 151 are fixed. The fixing member 155 may be provided in a plurality of numbers to fix the insulating member 153 and the harness isolation plate 151 at a plurality of positions, so that the fixing of the two is more stable and reliable.
In an alternative embodiment, the housing assembly 120 includes a U-shaped lower housing 121 and a module upper cover 122, the U-shaped lower housing 121 is connected to the module upper cover 122, and the end plate assembly 140 is connected to the U-shaped lower housing 121 and the module upper cover 122. When assembled, the U-shaped lower housing 121 and the module upper cover 122 may be connected by various possible welding methods, including but not limited to laser welding, etc. In the embodiment of the present invention, the components such as the battery cell assembly 110 are assembled on the U-shaped lower housing 121, and after the components are assembled, the module upper cover 122 is welded to the U-shaped lower housing 121, so that the assembly is more convenient, and the assembly efficiency is improved.
Referring to fig. 5, in an alternative embodiment, the end plate assembly 140 may include a metal end plate 141 and an insulating plastic member 142 connected to each other, the metal end plate 141 is connected to the housing assembly 120, the insulating plastic member 142 is connected to the wire harness isolation plate 151 and surrounds an enclosure space, and the serial bus bar 152 and the output stage bus bar 154 are located in the enclosure space.
That is, in the embodiment of the present invention, the end plate assembly 140 may be a composite structure of metal and plastic, that is, a composite structure of a metal end plate 141 and an insulating plastic 142, wherein the metal end plate 141 is connected to the housing assembly 120, and the insulating plastic 142 insulates the bus bar from the metal end plate 141.
Optionally, the metal end plate 141 and the housing assembly 120 are connected by various welding methods, such as laser welding, etc. It should be understood that the metal end plate 141 is connected to both the U-shaped lower case 121 and the module upper cover 122 of the case assembly 120 in a manner of laser welding or the like.
Referring to fig. 6, optionally, the insulating plastic member 142 and the wire harness isolation plate 151 form a covering structure, so that the periphery of the bus bar is made of insulating material, i.e. the bus bar is isolated from the module metal housing and the end plate, so as to improve the electrical insulation and voltage resistance of the module. At this time, the insulating plastic member 142 may be provided with a first covering part 1421, the wire harness isolation plate 151 may be provided with a second covering part 1513, and the first covering part 1421 and the second covering part 1513 are connected so that the insulating plastic member 142 and the wire harness isolation plate 151 enclose a covering space.
It should be understood that the connection between the insulating plastic member 142 and the wire harness isolation plate 151 forms a covering space, and the connection structure can be realized by the first covering part 1421 and the second covering part 1513, and in terms of specific structure, the connection structure can be a structure in which a protrusion is inserted or extends into a groove, or two protrusions are overlapped with each other. The first wrapping part 1421 and the second wrapping part 1513 achieve wrapping connection between the insulating plastic member 142 and the wire harness isolation plate 151, and achieve wrapping of the serial bus bar 152 and the output-stage bus bar 154 in the wrapping space, so that the bus bar is insulated and isolated from the metal end plate 141, the module upper cover 122 and the U-shaped lower housing 121, and thus, electrical insulation and voltage resistance of the module are improved.
Optionally, a plurality of mounting holes 1411 are formed in the metal end plate 141, and a plastic column 1422 correspondingly connected to the plurality of mounting holes 1411 is formed on the insulating plastic 142. The fitting of the mounting holes 1411 with the plastic posts 1422 enables the positioning and securing of the metal end plate 141 with the insulating plastic 142. As shown, the mounting holes 1411 and plastic posts 1422 are arranged in a 2 × 4 array; of course, the invention is not limited thereto, and other arrangements may be adopted in other embodiments of the invention.
Referring to fig. 7, in an alternative embodiment, the sampling circuit board 160 includes a circuit board 161, a sampling terminal and a foam pressing member 163, the sampling terminal is electrically connected to the circuit board 161 and connected to the middle of the electric core assembly 110 for obtaining sampling parameters of the electric core assembly 110, and the foam pressing member 163 is connected to the sampling terminal.
It should be noted that the sampling circuit board 160 can obtain sampling parameters of the middle portion of the electric core assembly 110, such as temperature data of the middle portion of the electric core assembly 110. The inventor researches and discovers that the temperature of a bus bar on the lithium ion square module 100 is higher than the temperature of an electric core, and in the prior art, the temperature data obtained by acquiring the temperature of the bus bar as the temperature of the electric core is higher than the actual temperature of the electric core, so that the maximum performance of a battery cannot be exerted. In the embodiment of the present invention, the temperature of the middle portion of the battery cell can be obtained through the circuit board 161 and the sampling terminal, so that the temperature can more accurately reflect the actual temperature of the battery cell, and the advanced power limit of the battery system can be avoided, thereby improving the user experience.
Meanwhile, in the embodiment of the present invention, the foam pressing member 163 is connected to the sampling terminal, and the foam pressing member 163 may be pressed under the module upper cover 122, so as to implement stable attachment between the sampling terminal and the battery cell.
Optionally, the sampling terminal may be an NTC terminal (Negative Temperature Coefficient, which refers to a thermistor phenomenon and material with a Negative Temperature Coefficient, in which resistance decreases exponentially with Temperature rise, and the material is a semiconductor ceramic formed by fully mixing, molding, sintering and other processes of two or more metal oxides of manganese, copper, silicon, cobalt, iron, nickel, zinc and the like, and may be made into a thermistor with a Negative Temperature Coefficient), and the sampling terminal may be attached to an electric core to obtain the Temperature of the electric core; under the effect that the cotton piece 163 that compresses tightly of bubble, can guarantee the inseparable laminating of NTC terminal and electric core to reduce the influence of external vibration to sampling terminal and the laminating effect of electric core subassembly 110, be favorable to making the sampling terminal can hug closely on electric core subassembly 110 at whole life cycle.
In an alternative embodiment, the cell assembly 110 may further include the lithium ion square module 100 and an insulating plate 170, the insulating plate 170 is disposed on the top surface of the cell assembly 110 and is located between the housing assembly 120 and the cell assembly 110, and the foam compressing assembly 163 is located between the insulating plate 170 and the sampling terminal. The insulating plate 170 may insulate the core assembly 110 from the module top cover 122, and may also insulate the sampling circuit board 160 from the module top cover 122. The insulating plate 170 is generally of the same shape as the module top 122, but has a specific size slightly smaller than the size of the module top 122.
Referring to fig. 8, in the embodiment of the present invention, the battery cell of the battery cell assembly 110 may be directly bonded to the U-shaped lower casing 121 through the thermal conductive adhesive 180, and the thermal conductivity of the battery cell may be the battery cell, the thermal conductive adhesive 180, and the U-shaped lower casing 121.
An embodiment of the present invention provides an electric vehicle including the lithium ion square module 100 according to any one of the foregoing embodiments. The lithium ion square module 100 can provide power for an electric vehicle, which can be a new energy automobile and other possible electric equipment.
Referring to fig. 1 to 8, a lithium ion square module 100 and an electric vehicle according to an embodiment of the present invention: the lithium ion quad module 100 includes a core assembly 110, a case assembly 120, a heat insulating buffer 130, an end plate assembly 140, a bus bar assembly 150, and a sampling circuit board 160. The busbar assembly 150 includes a wiring harness isolation plate 151, a serial busbar 152, an insulator 153 and an output-stage busbar 154, the wiring harness isolation plate 151 and the end plate assembly 140 form a snap fit, the serial busbar 152 is connected with the wiring harness isolation plate 151 and electrically connected with the electric core assembly 110, and the insulator 153 is connected with the wiring harness isolation plate 151. The heat insulation buffer 130 can perform a heat insulation function and can absorb the deformation amount of the cell due to thermal expansion. Sampling circuit board 160 can realize the sampling to electric core subassembly 110 parameter, and this sampling parameter can be for electric core subassembly 110's temperature to be convenient for according to electric core subassembly 110's temperature data, in time adjust the output of module. The wiring harness isolation plate 151 is connected with the serial bus bar 152, and the serial bus bar 152 is electrically connected with the battery cells in the battery cell assembly 110 to realize the serial connection of the battery cells; the insulator 153 is used for insulating the bus bars, and is used for insulating the output stage bus bars 154 from the series bus bars 152. In the embodiment of the present invention, the harness isolation plate 151, the serial bus bar 152, and the output stage bus bar 154 are stacked, and the space can be fully utilized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The lithium ion square module is characterized by comprising a cell assembly (110), a shell assembly (120), a heat insulation buffer (130), an end plate assembly (140), a bus bar assembly (150) and a sampling circuit board (160);
the electric core assembly (110) is arranged in the shell assembly (120), the heat insulation buffer (130) is arranged on the side surface of the electric core assembly (110) and positioned between the electric core assembly (110) and the shell assembly (120), and the end plate assembly (140) is connected with the shell assembly (120);
the busbar assembly (150) is arranged in the shell assembly (120) and located between the end of the electric core assembly (110) and the end plate assembly (140), the busbar assembly (150) comprises a wiring harness isolation plate (151), a series busbar (152), an insulator (153) and an output stage busbar (154), the wiring harness isolation plate (151) is matched with the end plate assembly (140) in a buckling mode, the series busbar (152) is connected with the wiring harness isolation plate (151) and electrically connected with the electric core assembly (110), the insulator (153) is connected with the wiring harness isolation plate (151), and the series busbar (152) is arranged in an insulating mode through the insulator (153) and the output stage busbar (154);
the sampling circuit board (160) is connected with the electric core assembly (110) and is used for acquiring sampling parameters of the electric core assembly (110).
2. The square lithium ion module as claimed in claim 1, wherein a plurality of mounting portions (1511) are provided side by side on the harness isolation plate (151), and a plurality of the serial bus bars (152) are correspondingly connected to the mounting portions (1511) and are electrically connected to the cell assembly (110), respectively.
3. The lithium ion square module according to claim 1 or 2, wherein the busbar assembly (150) further comprises a fixing member (155), and the insulating member (153) is connected to the harness isolation plate (151) through the fixing member (155) and insulates the series busbar (152) and the output stage busbar (154) from each other.
4. The lithium ion square module according to claim 1, wherein the end plate assembly (140) comprises a metal end plate (141) and an insulating plastic member (142) connected with each other, the metal end plate (141) is connected with the housing assembly (120), the insulating plastic member (142) is in snap fit with the harness isolation plate (151) and encloses an enclosure space, and the series bus bar (152) and the output stage bus bar (154) are located in the enclosure space.
5. The lithium ion square module according to claim 4, wherein the insulating plastic member (142) is provided with a first cladding (1421), the wire harness isolation plate (151) is provided with a second cladding (1513), and the first cladding (1421) and the second cladding (1513) are buckled and matched so that the insulating plastic member (142) and the wire harness isolation plate (151) enclose the cladding space.
6. The lithium ion square module according to claim 4 or 5, characterized in that a plurality of mounting holes (1411) are provided on the metal end plate (141), and a plastic column (1422) corresponding to the plurality of mounting holes (1411) is provided on the insulating plastic member (142).
7. The lithium ion square module according to claim 1, wherein the sampling circuit board (160) comprises a circuit board (161), a sampling terminal and a foam pressing member (163), the sampling terminal is electrically connected with the circuit board (161) and connected with the middle part of the cell assembly (110) for obtaining sampling parameters of the cell assembly (110), and the foam pressing member (163) is connected with the sampling terminal.
8. The lithium ion square module according to claim 7, wherein the cell assembly (110) comprises a lithium ion square module (100) and further comprises an insulating plate (170), the insulating plate (170) is disposed on the top surface of the cell assembly (110) and is located between the housing assembly (120) and the cell assembly (110), and the foam pressing member (163) is located between the insulating plate (170) and the sampling terminal.
9. The lithium ion square module according to claim 1, wherein the housing assembly (120) comprises a U-shaped lower housing (121) and a module upper cover (122), the U-shaped lower housing (121) is connected with the module upper cover (122), and the end plate assembly (140) is connected with the U-shaped lower housing (121) and the module upper cover (122).
10. An electric vehicle, characterized in comprising a lithium-ion square module (100) according to any one of claims 1 to 9.
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| CN202011107382.XA CN112234258B (en) | 2020-10-16 | 2020-10-16 | Lithium ion square module and electric vehicle |
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|---|---|---|---|
| CN202011107382.XA CN112234258B (en) | 2020-10-16 | 2020-10-16 | Lithium ion square module and electric vehicle |
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| CN112234258B CN112234258B (en) | 2021-08-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411652A (en) * | 2018-02-01 | 2019-03-01 | 合肥国轩高科动力能源有限公司 | Battery modules and power battery |
| CN111162221A (en) * | 2020-01-21 | 2020-05-15 | 远景睿泰动力技术(上海)有限公司 | Electricity core unit, electricity core subassembly and battery module |
| CN211265580U (en) * | 2020-01-21 | 2020-08-14 | 中国第一汽车股份有限公司 | Laminate polymer battery module |
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411652A (en) * | 2018-02-01 | 2019-03-01 | 合肥国轩高科动力能源有限公司 | Battery modules and power battery |
| CN111162221A (en) * | 2020-01-21 | 2020-05-15 | 远景睿泰动力技术(上海)有限公司 | Electricity core unit, electricity core subassembly and battery module |
| CN211265580U (en) * | 2020-01-21 | 2020-08-14 | 中国第一汽车股份有限公司 | Laminate polymer battery module |
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