CN108767183B - Electrode plate, electrode plate and battery module - Google Patents
Electrode plate, electrode plate and battery module Download PDFInfo
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- CN108767183B CN108767183B CN201810504056.9A CN201810504056A CN108767183B CN 108767183 B CN108767183 B CN 108767183B CN 201810504056 A CN201810504056 A CN 201810504056A CN 108767183 B CN108767183 B CN 108767183B
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- 238000003466 welding Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
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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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides an electrode plate, an electrode plate and a battery module. The battery module comprises a single battery and a fixing plate, wherein the single battery comprises an electrode end, a mounting through hole is formed in the fixing plate, and the fixing plate is used for fixing the single battery through cooperation between the mounting through hole and the electrode end. The electrode plate comprises a bearing plate body, an electrode contact part with a spiral hollowed-out structure is arranged on the bearing plate body, and the electrode contact part is in contact welding with a battery electrode on an electrode end; and a limiting piece is arranged on the side surface of the electrode contact part, facing the electrode end, and extends into the mounting through hole and is accommodated in the mounting through hole so as to limit and fix the bearing plate body on the fixing plate. The electrode plate can improve the welding strength between the battery module and the single battery, reduce the possibility of large-amplitude movement of the electrode plate after welding, and avoid the phenomenon of battery short circuit of the battery module due to the electrode plate.
Description
Technical Field
The invention relates to the technical field of battery modules, in particular to an electrode plate, an electrode plate and a battery module.
Background
In the process of production molding of the battery module, the welding strength between the electrode plate and the single battery is required to be detected, so that the welded single battery can meet the product inspection standard. At present, the main stream in the industry usually dials an electrode plate after the electrode plate is welded with a single battery to detect welding strength.
At present, the electrode plate used for manufacturing the battery module on the market is an electrode plate with completely flat and smooth side surface, and when the electrode plate is applied to the detection mode, the electrode plate is generally moved greatly relative to the single battery due to low welding strength (for example, the single battery is virtually welded on the electrode plate), so that the electrode plate can be directly connected with the positive electrode and the negative electrode of the single battery, and the battery module is short-circuited.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an electrode plate, an electrode plate and a battery module, wherein the electrode plate can improve the welding strength between the battery module and a single battery, reduce the possibility of the electrode plate moving greatly after welding and avoid the phenomenon of short circuit of the battery caused by the electrode plate.
Regarding an electrode plate, the embodiment of the invention provides an electrode plate, which is applied to a battery module, wherein the battery module comprises a single battery and a fixed plate, the single battery comprises an electrode end, a mounting through hole is arranged on the fixed plate, and the fixed plate is used for fixing the single battery through the cooperation between the mounting through hole and the electrode end;
the electrode plate comprises a bearing plate body, an electrode contact part with a spiral hollow structure is arranged on the bearing plate body, and the electrode contact part is in contact welding with a battery electrode on the electrode end;
and a limiting piece is arranged on the side surface of the electrode contact part, facing the electrode end, and extends into the mounting through hole and is accommodated in the mounting through hole so as to limit and fix the bearing plate body on the fixing plate.
Alternatively, in the embodiment of the present invention, the position of the electrode contact portion on the carrier plate body and the position of the corresponding mounting through hole are matched with each other.
Optionally, in an embodiment of the present invention, an extension length of the limiting piece extending into the mounting through hole ranges from 0.5mm to 1mm, and a thickness of the bearing plate body ranges from 0.1mm to 0.2mm.
Optionally, in an embodiment of the present invention, the limiting member is a flange structure extending along a hollowed edge of the electrode contact portion toward the electrode end.
In terms of electrode plates, the embodiment of the invention provides an electrode plate which is applied to a battery module, wherein the battery module comprises a plurality of single batteries and a fixing plate, each single battery comprises an electrode end, a mounting through hole is formed in the fixing plate, and the fixing plate is used for fixing the plurality of single batteries through the cooperation between the mounting through holes and the electrode ends;
the electrode plate comprises a conductive plate body, a plurality of electrode contact parts with spiral hollow structures are arranged on the conductive plate body, the positions of the electrode contact parts on the conductive plate body correspond to the positions of the mounting through holes, and each electrode contact part is in contact welding with a battery electrode on the electrode end in the corresponding mounting through hole;
at least one electrode contact part is provided with a limiting piece on the side face facing the corresponding electrode end, and the limiting piece stretches into the corresponding mounting through hole and is accommodated in the mounting through hole so as to limit and fix the conductive plate body on the fixing plate.
Optionally, in an embodiment of the present invention, an extension length of the limiting piece extending into the corresponding mounting through hole ranges from 0.5mm to 1mm, and a thickness of the conductive plate body ranges from 0.1mm to 0.2mm.
Optionally, in an embodiment of the present invention, the limiting member is a flange structure extending toward the electrode end along a hollowed edge of the corresponding electrode contact portion.
In terms of a module, the embodiment of the invention provides a battery module, which comprises a plurality of single batteries, two fixing plates, any one of the electrode plates and/or any one of the electrode plates;
each single battery comprises two electrode terminals, each fixing plate is provided with a mounting through hole for fixing the single battery, and a plurality of single batteries are arranged between the two fixing plates and are fixed with the two fixing plates through the cooperation between the mounting through holes and the electrode terminals;
the electrode plates and/or the electrode plates are arranged on one sides, far away from the single batteries, of the two fixing plates and are attached to the fixing plates, so that electrode contact parts on the electrode plates and/or the electrode plates are in contact welding with battery electrodes on the electrode ends in the corresponding mounting through holes, and the electrode plates and/or the limiting pieces on the electrode plates extend into the corresponding mounting through holes and are accommodated in the mounting through holes.
Optionally, in an embodiment of the present invention, a side surface of each fixing plate, which is far away from the unit cell, is provided with a mounting groove for accommodating the electrode plate and/or the electrode plate, a bottom of the mounting groove is communicated with the mounting through hole, and the electrode plate and/or the electrode plate is accommodated in the mounting groove so as to be attached to the fixing plate.
Optionally, in an embodiment of the present invention, the battery module further includes a liquid cooling flat tube;
the liquid cooling flat tube is wound among the plurality of single batteries and is attached to the plurality of single batteries so as to carry out thermal management on the plurality of single batteries.
Compared with the prior art, the electrode plate and the battery module provided by the embodiment of the invention have the following beneficial effects: the electrode plate can improve the welding strength between the battery module and the single battery, reduce the possibility of large-amplitude movement of the electrode plate after welding, and avoid the phenomenon of battery short circuit of the battery module due to the electrode plate. The electrode plate is applied to a battery module, the battery module comprises a single battery and a fixing plate, the single battery comprises an electrode end, an installation through hole is formed in the fixing plate, and the fixing plate is used for fixing the single battery through the cooperation between the installation through hole and the electrode end. The electrode plate comprises a bearing plate body, an electrode contact part with a spiral hollow structure is arranged on the bearing plate body, and the electrode contact part is in contact welding with a battery electrode on the electrode end. The electrode contact portion is provided with the locating part towards on the side of electrode tip, the locating part stretches into installation through-hole and holding in the installation through-hole, with the loading board body is spacing to be fixed on the fixed plate, thereby pass through the locating part will the electrode slice is restricted in the regional position that corresponds installation through-hole place, reduces the possibility that this electrode slice moved by a wide margin after the welding, makes the electrode slice can not take place the removal by a wide margin because of the dynamics of stirring in welding strength testing process, thereby improve the welding strength with single battery in the battery module, avoid the battery module to appear the phenomenon of battery short circuit because of the electrode slice.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope of the claims of the present invention, and that other related drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic view of a first structure of a battery module according to an embodiment of the present invention.
Fig. 2 is an exploded view of the battery module shown in fig. 1.
Fig. 3 is a schematic structural diagram of the electrode sheet shown in fig. 2 according to an embodiment of the present invention.
Fig. 4 is a schematic view of a second structure of a battery module according to an embodiment of the present invention.
Fig. 5 is an exploded view of the battery module shown in fig. 4.
Fig. 6 is a schematic structural diagram of the electrode plate shown in fig. 5 according to an embodiment of the present invention.
Fig. 7 is a schematic view illustrating a third structure of a battery module according to an embodiment of the present invention.
Fig. 8 is an exploded view of the battery module shown in fig. 7.
Icon: 100-battery module; 110-a fixed plate; 111-mounting through holes; 112-mounting slots; 120-single battery; 121-electrode terminals; 130-electrode sheet; 131-bearing plate body; 132-electrode contacts; 133-a limiting piece; 140-electrode plates; 141-conductive plate body.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic diagram of a first structure of a battery module 100 according to an embodiment of the invention, and fig. 2 is an exploded schematic diagram of the battery module 100 shown in fig. 1. In the first embodiment of the present invention, the battery module 100 includes a fixing plate 110, a unit cell 120, and an electrode tab 130, wherein the fixing plate 110 is used for fixing the unit cell 120, and the electrode tab 130 is mounted on the fixing plate 110 and is welded in contact with the unit cell 120 to correspondingly produce the battery module 100. The electrode plate 130 can limit the position of the electrode plate 130 on the fixing plate 110 when being in contact welding with the single battery 120, so that the electrode plate 130 cannot move greatly due to stirring force in the welding strength detection process, the welding strength between the electrode plate and the single battery 120 in the battery module 100 is improved, and the phenomenon that the battery module 100 is short-circuited due to the electrode plate 130 is avoided.
The unit battery 120 includes two electrode terminals 121, and the number of the fixing plates 110 is two, and each electrode terminal 121 corresponds to one fixing plate 110. Each of the fixing plates 110 is provided with a mounting through hole 111 for mounting and fixing the unit cells 120, and positions of the mounting through holes 111 on the two fixing plates 110 correspond to each other.
The unit cells 120 are disposed between the two fixing plates 110, and the unit cells 120 and the two fixing plates 110 are mutually fixed by the cooperation between the mounting through holes 111 on the fixing plates 110 and the corresponding electrode terminals 121 on the unit cells 120.
In this embodiment, the fixing plate 110 is further provided with an installation groove 112 for accommodating the electrode plate 130, the installation groove 112 is disposed on a side surface of the fixing plate 110 away from the unit battery 120, and the corresponding installation groove 112 on each fixing plate 110 is mutually communicated with the installation through hole 111.
In this embodiment, each electrode piece 130 is correspondingly contact-welded to one electrode terminal 121 of one unit cell 120, and when the electrode piece 130 is installed in the installation groove 112 on the fixing plate 110, it is contact-welded to the electrode terminal 121 on the unit cell 120 correspondingly accommodated in the installation through hole 111.
Fig. 3 is a schematic structural diagram of the electrode sheet 130 shown in fig. 2 according to an embodiment of the present invention. In this embodiment, the electrode plate 130 includes a carrier plate 131, an electrode contact portion 132 with a spiral hollow structure is formed on the carrier plate 131, a placement position of the electrode contact portion 132 in the mounting groove 112 corresponds to a position of the mounting through hole 111, and the electrode contact portion 132 is welded with a battery electrode on the electrode terminal 121 in the corresponding mounting through hole 111 in a contact manner.
In this embodiment, a limiting member 133 is disposed on a side surface of the electrode contact portion 132 facing the electrode terminal 121, and the limiting member 133 extends into the mounting through hole 111 corresponding to the electrode terminal 121 when the electrode contact portion 132 is welded with the battery electrode on the electrode terminal 121, and is correspondingly accommodated in the mounting through hole 111, so that the carrier plate body 131 where the limiting member 133 is located is limited and fixed in a position area of the fixing plate 110 corresponding to the mounting through hole 111, thereby reducing the possibility that the electrode plate 130 moves greatly after being welded with the battery electrode on the corresponding electrode terminal 121, so that the electrode plate 130 does not move greatly due to stirring force in the welding strength detection process, so as to improve the welding strength of the electrode plate 130 and the single battery 120 in the battery module 100, and avoid the phenomenon that the battery module 100 is short-circuited due to the movement of the electrode plate 130.
In this embodiment, the positions of the electrode contact portions 132 on the carrier plate bodies 131 corresponding to the electrode pads 130 are matched with the positions of the mounting through holes 111, and the number of the electrode contact portions 132 on each carrier plate body 131 is also one, that is, one electrode pad 130 corresponds to one carrier plate body 131 and one electrode contact portion 132, the electrode contact portions 132 are disposed on the carrier plate body 131, and the electrode contact portions 132 are provided with limiting members 133.
In the present embodiment, the battery module 100 performs contact welding of battery electrodes on the electrode terminals 121 of the respective unit cells 120 through the plurality of electrode tabs 130 mounted on each fixing plate 110 in the same number as the unit cells 120 to form the battery module 100.
In this embodiment, the extending length of the limiting member 133 on the electrode contact portion 132 extending into the corresponding mounting through hole 111 ranges from 0.5mm to 1mm, and the thickness of the supporting plate body 131 where the electrode contact portion 132 is located ranges from 0.1mm to 0.2mm. In one implementation of this embodiment, the extending length of the limiting member 133 extending into the corresponding mounting through hole 111 is 0.5mm, and the thickness of the bearing plate 131 is 0.15mm.
In this embodiment, the limiting member 133 on the electrode contact portion 132 is a flange structure extending toward the electrode end 121 along the hollow edge of the electrode contact portion 132.
Referring to fig. 4 and 5 in combination, fig. 4 is a schematic diagram illustrating a second structure of the battery module 100 according to the embodiment of the invention, and fig. 5 is an exploded schematic diagram of the battery module 100 shown in fig. 4. . In the second embodiment of the present invention, the battery module 100 provided in the second embodiment is similar to the battery module 100 provided in the first embodiment in terms of shape, operation principle and technical effects, except that the parts of the battery module 100 that are welded in contact with the individual battery cells 120 are electrode plates 140 included in the battery module 100, instead of the corresponding electrode plates 130 in the first embodiment.
In this embodiment, the mounting groove 112 provided on the fixing plate 110 is used for accommodating the electrode plates 140, and each electrode plate 140 may be correspondingly contact-welded with the electrode terminals 121 on the plurality of unit cells 120.
Optionally, please refer to fig. 6, which is a schematic structural diagram of the electrode plate 140 shown in fig. 5 according to an embodiment of the present invention. In this embodiment, the electrode plate 140 includes a conductive plate body 141, the conductive plate body 141 is provided with a plurality of electrode contact portions 132 with spiral hollow structures, the positions of the electrode contact portions 132 on the conductive plate body 141 correspond to the positions of the mounting through holes 111 on the fixing plate 110, and each electrode contact portion 132 on the conductive plate body 141 is in contact welding with the battery electrode on the electrode terminal 121 corresponding to the mounting through hole 111.
In this embodiment, at least one electrode contact portion 132 of the plurality of electrode contact portions 132 on the conductive plate body 141 is provided with a limiting member 133 on a side surface facing the electrode terminal 121, and the limiting member 133 extends into the mounting through hole 111 corresponding to the electrode terminal 121 when the electrode contact portion 132 is welded with the battery electrode on the electrode terminal 121, and is correspondingly accommodated in the mounting through hole 111, so that the conductive plate body 141 where the limiting member 133 is located is limited and fixed in a position area range of the plurality of mounting through holes 111 covered by the conductive plate body 141 on the fixed plate 110, thereby reducing the possibility that the electrode plate 140 moves greatly after the battery electrode on the corresponding electrode terminal 121 is welded, so that the electrode plate 140 does not move greatly due to the stirring force in the welding strength detection process, so as to improve the welding strength of the electrode plate 140 and the single battery 120 in the battery module 100, and avoid the phenomenon of short circuit of the battery due to the movement of the electrode plate 140 in the battery module 100.
In this embodiment, the number of the electrode contact portions 132 existing on each conductive plate body 141 is plural, and the stopper 133 is provided on at least one electrode contact portion 132 existing in the plural electrode contact portions 132.
In the present embodiment, the battery module 100 performs contact welding of the battery electrodes on the unit cells 120 in the battery module 100 through the electrode plates 140 mounted on each fixing plate 110 capable of contact welding with the plurality of electrode terminals 121 to form the battery module 100.
In this embodiment, the extending length of the limiting member 133 of the electrode plate 140 extending into the corresponding mounting through hole 111 is in the range of 0.5mm to 1mm, and the thickness of the conductive plate body 141 of the electrode contact portion 132 is in the range of 0.1mm to 0.2mm. In one implementation of this embodiment, the extending length of the limiting member 133 extending into the corresponding mounting through hole 111 is 0.5mm, and the thickness of the conductive plate 141 is 0.15mm.
In this embodiment, the limiting member 133 on the electrode plate 140 is a flange structure extending toward the electrode end 121 along the hollow edge of the corresponding electrode contact portion 132.
Referring to fig. 7 and 8 in combination, fig. 7 is a schematic diagram illustrating a third structure of the battery module 100 according to the embodiment of the invention, and fig. 8 is an exploded schematic diagram of the battery module 100 shown in fig. 7. In the third embodiment of the present invention, the battery module 100 provided in the third embodiment is similar to the battery module 100 provided in the first embodiment and the second embodiment in terms of shape, operation principle and technical effects, except that the parts of the battery module 100 provided in the third embodiment, which are welded in contact with the individual battery cells 120, simultaneously include the electrode tab 130 in the battery module 100 corresponding to the first embodiment, and the electrode plate 140 in the battery module 100 corresponding to the second embodiment.
In this embodiment, the mounting groove 112 provided on the fixing plate 110 may be used to accommodate the electrode plate 130, or may be used to accommodate the electrode plate 140, where the electrode plate 130 correspondingly accommodated in the mounting groove 112 cooperates with the electrode plate 140 to contact and weld the battery electrodes on the electrode terminals 121 of all the unit batteries 120 in the battery module 100, so that the limiting member 133 on the electrode plate 130 and the limiting member 133 on the electrode plate 140 can correspondingly extend into the mounting through hole 111 accommodating the electrode terminal 121, and correspondingly accommodated in the mounting through hole 111, so that the electrode plate 130 and the electrode plate 140 cannot move greatly due to stirring force in the welding strength detection process, thereby improving welding firmness of the electrode plate 130 or the electrode plate 140 and the unit batteries 120 in the battery module 100, and avoiding a phenomenon of battery short circuit of the battery module 100 due to movement of the electrode plate 130 and/or the electrode plate 140.
In this embodiment, the electrode sheet 130 and the electrode plate 140 are attached to the fixing plate 110 provided with the mounting groove 112 when being accommodated in the mounting groove 112.
In the present invention, the battery module 100 provided in the first embodiment, the battery module 100 provided in the second embodiment, and the battery module 100 provided in the third embodiment may further include a liquid cooling flat tube, where the liquid cooling flat tube is wound between the plurality of unit batteries 120 and is attached to the plurality of unit batteries 120, so as to perform heat management on the plurality of unit batteries 120, thereby improving the service life of the battery module 100.
In summary, in the electrode plate, the electrode plate and the battery module provided by the embodiment of the invention, the electrode plate can improve the welding strength between the battery module and the single battery, reduce the possibility of large movement of the electrode plate after welding, and avoid the phenomenon of short circuit of the battery due to the electrode plate. The electrode plate is applied to a battery module, the battery module comprises a single battery and a fixing plate, the single battery comprises an electrode end, an installation through hole is formed in the fixing plate, and the fixing plate is used for fixing the single battery through the cooperation between the installation through hole and the electrode end. The electrode plate comprises a bearing plate body, an electrode contact part with a spiral hollow structure is arranged on the bearing plate body, and the electrode contact part is in contact welding with a battery electrode on the electrode end. The electrode contact portion is provided with the locating part towards on the side of electrode tip, the locating part stretches into installation through-hole and holding in the installation through-hole, with the loading board body is spacing to be fixed on the fixed plate, thereby pass through the locating part will the electrode slice is restricted in the regional position that corresponds installation through-hole place, reduces the possibility that this electrode slice moved by a wide margin after the welding, makes the electrode slice can not take place the removal by a wide margin because of the dynamics of stirring in welding strength testing process, thereby improve the welding strength with single battery in the battery module, avoid the battery module to appear the phenomenon of battery short circuit because of the electrode slice.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The electrode plate is characterized by being applied to a battery module, wherein the battery module comprises a single battery and a fixing plate, the single battery comprises an electrode terminal, a mounting through hole is formed in the fixing plate, and the fixing plate is used for fixing the single battery through the cooperation between the mounting through hole and the electrode terminal;
the electrode plate comprises a bearing plate body, an electrode contact part with a spiral hollow structure is arranged on the bearing plate body, and the electrode contact part is in contact welding with a battery electrode on the electrode end;
a limiting piece is arranged on the side surface, facing the electrode end, of the electrode contact part, and extends into the mounting through hole and is accommodated in the mounting through hole so as to limit and fix the bearing plate body on the fixing plate;
the extension length of the limiting piece extending into the mounting through hole ranges from 0.5mm to 1mm, and the thickness of the bearing plate body ranges from 0.1mm to 0.2mm;
the limiting piece is of a flanging structure extending towards the electrode end along the hollowed-out edge of the electrode contact part;
the fixing plate is also provided with a mounting groove for accommodating the electrode plate.
2. The electrode tab of claim 1, wherein the position of the electrode contact on the carrier plate body matches the position of the corresponding mounting through hole.
3. The battery module comprises a plurality of single batteries and a fixing plate, wherein each single battery comprises an electrode end, a mounting through hole is formed in the fixing plate, and the fixing plate is used for fixing the plurality of single batteries through the cooperation between the mounting through hole and the electrode ends;
the electrode plate comprises a conductive plate body, a plurality of electrode contact parts with spiral hollow structures are arranged on the conductive plate body, the positions of the electrode contact parts on the conductive plate body correspond to the positions of the mounting through holes, and each electrode contact part is in contact welding with a battery electrode on the electrode end in the corresponding mounting through hole;
at least one electrode contact part is provided with a limiting piece on the side face facing the corresponding electrode end, and the limiting piece stretches into the corresponding mounting through hole and is accommodated in the mounting through hole so as to limit and fix the conductive plate body on the fixing plate;
the extension length of the limiting piece extending into the corresponding mounting through hole ranges from 0.5mm to 1mm, and the thickness of the conductive plate body ranges from 0.1mm to 0.2mm;
the limiting piece is a flanging structure extending towards the electrode end along the hollowed-out edge of the corresponding electrode contact part;
the fixing plate is also provided with a mounting groove for accommodating the electrode plate.
4. A battery module comprising a plurality of single cells and two fixing plates, and the electrode sheet according to any one of claims 1 or 2 and/or the electrode sheet according to claim 3;
each single battery comprises two electrode terminals, each fixing plate is provided with a mounting through hole for fixing the single battery, and a plurality of single batteries are arranged between the two fixing plates and are fixed with the two fixing plates through the cooperation between the mounting through holes and the electrode terminals;
the electrode plates and/or the electrode plates are arranged on one sides, far away from the single batteries, of the two fixing plates and are attached to the fixing plates, so that electrode contact parts on the electrode plates and/or the electrode plates are in contact welding with battery electrodes on the electrode ends in the corresponding mounting through holes, and the electrode plates and/or the limiting pieces on the electrode plates extend into the corresponding mounting through holes and are accommodated in the mounting through holes.
5. The battery module according to claim 4, wherein a mounting groove for accommodating the electrode plate and/or the electrode plate is provided on a side of each fixing plate away from the unit cell, a groove bottom of the mounting groove is communicated with the mounting through hole, and the electrode plate and/or the electrode plate is accommodated in the mounting groove so as to be attached to the fixing plate.
6. The battery module of claim 5, wherein the battery module further comprises a liquid cooled flat tube;
the liquid cooling flat tube is wound among the plurality of single batteries and is attached to the plurality of single batteries so as to carry out thermal management on the plurality of single batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810504056.9A CN108767183B (en) | 2018-05-23 | 2018-05-23 | Electrode plate, electrode plate and battery module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810504056.9A CN108767183B (en) | 2018-05-23 | 2018-05-23 | Electrode plate, electrode plate and battery module |
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| Publication Number | Publication Date |
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| CN108767183A CN108767183A (en) | 2018-11-06 |
| CN108767183B true CN108767183B (en) | 2024-03-08 |
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| CN114643399B (en) * | 2020-12-21 | 2023-12-01 | 新奥科技发展有限公司 | A welding mold for preparing skutterudite thermoelectric modules and a method for preparing the module |
| EP4270609A4 (en) * | 2021-11-25 | 2024-10-23 | Contemporary Amperex Technology (Hong Kong) Limited | BATTERY AND ITS MANUFACTURING METHOD AND ITS MANUFACTURING SYSTEM, AND ELECTRICAL EQUIPMENT |
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