CN115133234A - Battery cell module device and electric vehicle - Google Patents

Battery cell module device and electric vehicle Download PDF

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Publication number
CN115133234A
CN115133234A CN202210883756.XA CN202210883756A CN115133234A CN 115133234 A CN115133234 A CN 115133234A CN 202210883756 A CN202210883756 A CN 202210883756A CN 115133234 A CN115133234 A CN 115133234A
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CN
China
Prior art keywords
tab
battery cell
plate mechanism
cell module
module device
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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
Application number
CN202210883756.XA
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Chinese (zh)
Inventor
阮祖云
曾勇
李德壮
许炳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile Co Ltd
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Publication date
Application filed by GAC Aion New Energy Automobile Co Ltd filed Critical GAC Aion New Energy Automobile Co Ltd
Priority to CN202210883756.XA priority Critical patent/CN115133234A/en
Publication of CN115133234A publication Critical patent/CN115133234A/en
Pending legal-status Critical Current

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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
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

The embodiment of the application provides a battery cell module device and an electric vehicle, and relates to the technical field of power batteries. The battery cell module device comprises a battery cell assembly, a busbar mechanism, an end plate mechanism and a side plate mechanism; the end plate mechanism and the side plate mechanism are fixedly installed, and the electric core assembly is installed in an installation space defined by the end plate mechanism and the side plate mechanism; the electric core assembly comprises a plurality of electric cores, the electric cores are arranged side by side, the polar columns of the electric cores are provided with annular grooves, explosion-proof valves are arranged in the annular grooves, and the bus bar mechanism is welded and fixed on the inner sides of the annular grooves. This electricity core module device can realize improving the technological effect of the security of battery.

Description

Battery cell module device and electric vehicle
Technical Field
The application relates to the technical field of power batteries, in particular to a battery cell module device and an electric vehicle.
Background
At present, a new energy automobile refers to an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and has advanced technical principle, new technology and new structure. One of the new energy vehicles adopts a power battery, and the key of the power of the new energy vehicle is the electric quantity of the power battery. The space of the battery pack can be made of earth and gold, and a battery manufacturer and a host computer manufacturer desire to assemble batteries with more electric quantity in limited space.
In the prior art, when a thermal runaway occurs in an electric core, an explosion-proof valve is opened, or a loop cannot be closed due to failure of a relay, the electric core is continuously charged or discharged, so that the reaction of the thermal runaway electric core is more severe, secondary harm is caused, and the safety of a battery is low.
Disclosure of Invention
An object of the embodiment of the application is to provide a battery cell module device and an electric vehicle, can realize improving the technical effect of the security of battery.
In a first aspect, an embodiment of the present application provides an electrical core module device, including an electrical core module, a bus bar mechanism, an end plate mechanism, and a side plate mechanism;
the end plate mechanism and the side plate mechanism are fixedly installed, and the electric core assembly is installed in an installation space defined by the end plate mechanism and the side plate mechanism;
the electric core subassembly includes a plurality of electric cores, a plurality of electric cores set up side by side, the utmost point post of electric core is provided with the annular, set up explosion-proof valve in the annular, just busbar mechanism welded fastening is in the annular is inboard.
In the implementation process, the annular groove is formed in the pole of the battery cell, the explosion-proof valve is arranged in the annular groove, when the battery cell is out of control in the charging/discharging process or the battery cell is overcharged, the air pressure in the battery cell can be flushed through the explosion-proof valve on the pole, the bus bar mechanism can be flushed away together with the explosion-proof valve of the pole, the battery system can form an open circuit at the position, the thermal runaway of other battery cells in the battery cell assembly can not be caused, the further deterioration of the thermal runaway of the battery cell is avoided, and the further deterioration of the safety of the battery can be avoided; therefore, the battery core module device can achieve the technical effect of improving the safety of the battery.
Further, the battery cell comprises a winding mechanism and a tab assembly, the tab assembly comprises a first tab and a second tab, and the first tab and the second tab are respectively installed at two ends of the winding mechanism.
In the implementation process, the pole coil of the battery cell is wound into a pole coil mechanism as a body of the battery cell; the first tab and the second tab are metal conductors leading out the positive electrode and the negative electrode from the battery cell, namely contact points of the battery cell during charging/discharging.
Furthermore, the first tab is provided with a tab slot, and the position of the tab slot is opposite to that of the explosion-proof valve.
In the above-mentioned realization process, when electric core takes place the thermal runaway, the air current can follow utmost point ear fluting and pass through smoothly, avoids the thermal runaway further aggravation of electric core, can improve the security.
Further, the battery cell further comprises an adapter sheet assembly, the adapter sheet assembly comprises a first adapter sheet and a second adapter sheet, the first adapter sheet is fixedly connected with the first tab, and the second adapter sheet is fixedly connected with the second tab.
Furthermore, the first switching piece is provided with a switching piece open groove, and the position of the switching piece open groove is opposite to the position of the explosion-proof valve.
In the above-mentioned realization process, when electric core takes place the thermal runaway, the air current can follow the switching piece fluting and pass through smoothly, avoids the thermal runaway further aggravation of electric core, can improve the security.
Further, the battery cell further comprises a cover plate mechanism and a shell;
the pole is mounted on the surface of the cover plate mechanism, and the cover plate mechanism and the surface of the winding mechanism are fixedly mounted;
the winding mechanism is sleeved in the shell, and the cover plate mechanism is installed with the shell in a matching mode.
Further, the pole comprises a first pole and a second pole, the first pole is connected with the first pole lug, and the second pole is connected with the second pole lug.
Further, the cover plate mechanism is provided with a liquid injection hole.
Further, the cover plate mechanism and the housing are sealed by laser welding.
In a second aspect, an embodiment of the present application provides an electric vehicle, which includes the cell module apparatus described in any one of the first aspects.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the above-described techniques.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a battery cell provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first switching sheet according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a second interposer provided in an embodiment of the present application;
FIG. 4 is a schematic view of an assembly structure of an adapter plate assembly and a winding mechanism according to an embodiment of the present application;
FIG. 5 is a schematic view of an assembly structure of the cover plate mechanism and the winding mechanism according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a cover plate mechanism and a pole provided in the embodiment of the present application;
FIG. 7 is a schematic structural diagram of a cover mechanism according to an embodiment of the present disclosure;
FIG. 8 is a schematic top view of a cover mechanism according to an embodiment of the present disclosure;
FIG. 9 is a schematic diagram of a first cross-sectional structure of a cover mechanism according to an embodiment of the present disclosure;
FIG. 10 is a schematic diagram of a second cross-sectional structure of a cover mechanism according to an embodiment of the present application;
FIG. 11 is a partial enlarged structural view of a cover mechanism according to an embodiment of the present disclosure;
FIG. 12 is a schematic view of an assembly structure of a cover mechanism and a housing according to an embodiment of the present disclosure;
fig. 13 is a schematic structural diagram of a housing provided in an embodiment of the present application;
fig. 14 is a first structural schematic diagram of a cell module apparatus provided in an embodiment of the present application;
fig. 15 is a second schematic structure diagram of a battery cell module apparatus according to the embodiment of the present application;
fig. 16 is a schematic top view of a battery cell module device according to an embodiment of the present disclosure;
fig. 17 is a schematic diagram of a third cross-sectional structure of a battery cell module apparatus provided in an embodiment of the present application;
fig. 18 is a schematic diagram of a partially enlarged structure of a battery cell module device provided in an embodiment of the present application.
Icon: an electric core assembly 100; a battery cell 110; a winding mechanism 111; a tab assembly 112; a first tab 1121; a second pole ear 1122; tab slotting 1123; an interposer assembly 113; a first transition piece 1131; a second interposer 1132; the adapter plate is slotted 1133; a cover plate mechanism 114; a first welding surface 1141; a second welding surface 1142; a liquid injection hole 1143; a housing 115; a pole 116; a first pole 1161; a second pole 1162; a ring groove 1163; an inner side 1164 of the ring groove; an explosion-proof valve 117; a bus mechanism 200; an end plate mechanism 300; a side plate mechanism 400.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
The embodiment of the application provides a battery cell module device and an electric vehicle, which can be applied to a power battery of a new energy automobile; according to the battery cell module device, the annular groove is formed in the pole of the battery cell, the explosion-proof valve is arranged in the annular groove, when the battery cell is out of control in the charging/discharging process or the battery cell is overcharged, the air pressure in the battery cell can be flushed through the explosion-proof valve on the pole, and then the busbar mechanism can be flushed away together with the explosion-proof valve of the pole, a circuit break can be formed at the position of the battery cell, other battery cells in the battery cell assembly cannot be out of control, the battery cell is prevented from further worsening in thermal runaway, and the safety of the battery can be prevented from further worsening; therefore, the battery core module device can achieve the technical effect of improving the safety of the battery.
Referring to fig. 1 to 13, fig. 1 is a schematic structural diagram of a battery cell provided in an embodiment of the present application, fig. 2 is a schematic structural diagram of a first adaptor sheet provided in the embodiment of the present application, fig. 3 is a schematic structural diagram of a second adaptor sheet provided in the embodiment of the present application, fig. 4 is a schematic structural diagram of an adaptor sheet assembly and a winding mechanism provided in the embodiment of the present application, fig. 5 is a schematic structural diagram of an assembly structure of a cover plate mechanism and a winding mechanism provided in the embodiment of the present application, fig. 6 is a schematic structural diagram of a cover plate mechanism and a pole provided in the embodiment of the present application, fig. 7 is a schematic structural diagram of a cover plate mechanism provided in the embodiment of the present application, fig. 8 is a schematic structural diagram of a top view of a cover plate mechanism provided in the embodiment of the present application, fig. 9 is a schematic structural diagram of a first cross section of a cover plate mechanism provided in the embodiment of the present application, and fig. 10 is a schematic structural diagram of a second cross section of a cover plate mechanism provided in the embodiment of the present application, fig. 11 is a partially enlarged structural schematic diagram of a cover plate mechanism provided in the embodiment of the present application, fig. 12 is an assembly structural schematic diagram of the cover plate mechanism and a housing provided in the embodiment of the present application, and fig. 13 is a structural schematic diagram of the housing provided in the embodiment of the present application.
Illustratively, the battery cell 110 includes a winding mechanism 111 and a tab assembly 112, where the tab assembly 112 includes a first tab 1121 and a second tab 1122, and the first tab 1121 and the second tab 1122 are respectively mounted at two ends of the winding mechanism 111.
Exemplarily, a pole roll of the battery cell 110 is wound into a pole roll mechanism 111 as a body of the battery cell 110; the first tab 1121 and the second tab 1122 are metal conductors from which positive and negative electrodes are led out of the battery cell 110, that is, contact points at the time of charging/discharging the battery cell 110.
In some embodiments, the first tab 1121 is a positive tab and the second tab 1122 is a negative tab; the first tab 1121 may be a negative tab, and the second tab 1122 may be a positive tab, which are only exemplary and not limiting.
Illustratively, the first tab 1121 is provided with a tab slot 1123, and the tab slot 1123 is located opposite to the explosion-proof valve.
Exemplarily, when battery cell 110 takes place the thermal runaway, the air current can pass through from utmost point ear fluting 1123 smoothly, avoids the thermal runaway of battery cell 110 further to worsen, can improve the security.
Exemplarily, the electric core 110 further includes an adapter sheet assembly 113, where the adapter sheet assembly 113 includes a first adapter sheet 1131 and a second adapter sheet 1132, the first adapter sheet 1131 is fixedly connected with the first tab 1121, and the second adapter sheet 1132 is fixedly connected with the second tab 1122.
Illustratively, the first adapter plate 1131 is provided with an adapter plate slot 1133, and the position of the adapter plate slot 1133 is opposite to the position of the explosion-proof valve.
Exemplarily, when the battery cell 110 is out of control due to heat, the airflow may smoothly pass through the adaptor plate slot 1133, so as to avoid further deterioration of the battery cell 110 due to heat loss, and improve safety.
In some embodiments, the tab slot 1133 is located opposite the tab slot 1123.
Illustratively, the battery cell 110 further includes a cover plate mechanism 114 and a casing 115; the pole 116 is installed on the surface of the cover plate mechanism 114, and the cover plate mechanism 114 is fixedly installed on the surface of the winding mechanism 111; the winding mechanism 111 is sleeved in the shell 115, and the cover plate mechanism 114 is installed in a matching way with the shell 115.
Illustratively, the pole posts 116 include a first pole post 1161 and a second pole post 1162, the first pole post 1161 is connected with the first tab 1121, and the second pole post 1162 is connected with the second pole tab 1122.
Illustratively, the lid mechanism 114 is provided with a pour hole 1143.
Illustratively, as shown in fig. 7, the cover plate mechanism 114 is provided with a first welding surface 1141 and a second welding surface 1142; the first welding surface 1141 is used to weld and fix the first pole 1161, and the second welding surface 1142 is used to weld and fix the second pole 1162.
Illustratively, the cover plate mechanism 114 and the housing 115 are sealed by laser welding.
Referring to fig. 14 to 18, fig. 14 is a first structural schematic diagram of a cell module device provided in an embodiment of the present application, fig. 15 is a second structural schematic diagram of the cell module device provided in the embodiment of the present application, fig. 16 is a top structural schematic diagram of the cell module device provided in the embodiment of the present application, fig. 17 is a third cross-sectional structural schematic diagram of the cell module device provided in the embodiment of the present application, and fig. 18 is a partially enlarged structural schematic diagram of the cell module device provided in the embodiment of the present application.
Illustratively, the cell module device includes a cell module 100, a bus bar mechanism 200, an end plate mechanism 300, and a side plate mechanism 400; the end plate mechanism 300 and the side plate mechanism 400 are fixedly installed, and the electric core assembly 100 is installed in an installation space defined by the end plate mechanism 300 and the side plate mechanism 400; the battery assembly 100 includes a plurality of battery cells 110, the battery cells 110 are arranged side by side, the pole 116 of the battery cell 110 is provided with a ring groove 1163, the explosion-proof valve 117 is arranged in the ring groove 1163, and the bus bar mechanism 200 is welded and fixed inside the ring groove 1163 (inside the ring groove 1164).
Exemplarily, an embodiment of the present application provides an electric vehicle including the cell module device of fig. 1 to 18.
Exemplarily, an embodiment of the present application provides a cell module device, where a first tab 1121 is provided with a slot, and when a thermal runaway of a cell 110 occurs, an airflow can smoothly pass through the slot. The first adapter plate 1131 and the second adapter plate 1132 are both provided with pole welding surfaces and pole lug welding surfaces; the first adaptor plate 1131 is provided with an adaptor plate slot 1133, and when the battery cell 110 is out of control thermally, airflow can smoothly pass through the adaptor plate slot 1133.
Illustratively, the tab assembly 112 on the winding mechanism 111 is welded with the adapter sheet assembly 113, and is shaped and partially insulated; the cover plate mechanism 114 is provided with a liquid injection hole 1143 and a pole post 116, the first pole post 1161 is provided with an explosion-proof valve 117, and the explosion-proof valve 117 consists of an annular groove and a busbar welding surface on the inner side of the annular groove.
Illustratively, the interposer assembly 113 is welded, shaped and insulated with the posts 116 on the cover mechanism 114. Optionally, the battery cell module device comprises an end plate mechanism 300, a side plate mechanism 400, a battery cell assembly 100, a structure between the battery cells 110, a structure adhesive between the end plate mechanism 300, the side plate mechanism 400 and the battery cell assembly 100, and the like. Because the output pole or the busbar of the cell module device is welded on the inner side of the explosion-proof valve ring groove of the first pole column 1161, the explosion-proof valve 117 cannot be welded through, and when the cell 110 is out of control in the charging or discharging process, the explosion-proof valve on the first pole column 1161 is flushed by the air pressure inside the cell 110, so that the busbar or the output pole can be flushed away together with the explosion-proof valve 117 of the first pole column 1161, the battery system can be broken at the position, and the thermal out of control of the cell cannot be further worsened.
In some embodiments, when the battery cell 110 is overcharged and the air pressure inside the battery cell 110 reaches a certain value, the explosion-proof valve 117 on the first terminal post 1161 is opened, so that the bus bar or the output terminal is opened together with the explosion-proof valve 117 of the first terminal post 1161, and the battery system is disconnected at this point, so that thermal runaway of other battery cells in the battery system is avoided, and the battery safety is not further deteriorated.
In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.
It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.
In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A battery cell module device is characterized by comprising a battery cell module, a busbar mechanism, an end plate mechanism and a side plate mechanism;
the end plate mechanism and the side plate mechanism are fixedly installed, and the electric core assembly is installed in an installation space defined by the end plate mechanism and the side plate mechanism;
the electric core subassembly includes a plurality of electric cores, a plurality of electric cores set up side by side, the utmost point post of electric core is provided with the annular, set up explosion-proof valve in the annular, just busbar mechanism welded fastening is in the annular is inboard.
2. The battery cell module device of claim 1, wherein the battery cell comprises a winding mechanism and a tab assembly, the tab assembly comprises a first tab and a second tab, and the first tab and the second tab are respectively mounted at two ends of the winding mechanism.
3. The battery cell module device of claim 2, wherein the first tab is provided with a tab slot, and the tab slot is located opposite to the explosion-proof valve.
4. The battery cell module device of claim 2, wherein the battery cell further comprises an interposer assembly, the interposer assembly comprises a first interposer and a second interposer, the first interposer is fixedly connected to the first tab, and the second interposer is fixedly connected to the second tab.
5. The cell module device according to claim 4, wherein the first adaptor sheet is provided with an adaptor sheet slot, and the position of the adaptor sheet slot is opposite to the position of the explosion-proof valve.
6. The cell module apparatus of claim 2, wherein the cell further comprises a cover plate mechanism and a housing;
the pole is mounted on the surface of the cover plate mechanism, and the cover plate mechanism and the surface of the winding mechanism are fixedly mounted;
the winding mechanism is sleeved in the shell, and the cover plate mechanism is installed with the shell in a matching mode.
7. The cell module device of claim 6, wherein the poles include a first pole and a second pole, the first pole is connected to the first tab, and the second pole is connected to the second tab.
8. The cell module device of claim 6, wherein the cover mechanism is provided with a liquid injection hole.
9. The cell module apparatus of claim 6, wherein the cover mechanism and the casing are sealed by laser welding.
10. An electric vehicle, characterized by comprising the cell module device according to any one of claims 1 to 9.
CN202210883756.XA 2022-07-26 2022-07-26 Battery cell module device and electric vehicle Pending CN115133234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210883756.XA CN115133234A (en) 2022-07-26 2022-07-26 Battery cell module device and electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210883756.XA CN115133234A (en) 2022-07-26 2022-07-26 Battery cell module device and electric vehicle

Publications (1)

Publication Number Publication Date
CN115133234A true CN115133234A (en) 2022-09-30

Family

ID=83385688

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210883756.XA Pending CN115133234A (en) 2022-07-26 2022-07-26 Battery cell module device and electric vehicle

Country Status (1)

Country Link
CN (1) CN115133234A (en)

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