CN114824676A - Secondary battery - Google Patents
Secondary battery Download PDFInfo
- Publication number
- CN114824676A CN114824676A CN202210607955.8A CN202210607955A CN114824676A CN 114824676 A CN114824676 A CN 114824676A CN 202210607955 A CN202210607955 A CN 202210607955A CN 114824676 A CN114824676 A CN 114824676A
- Authority
- CN
- China
- Prior art keywords
- pin
- extension
- adapter
- secondary battery
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims abstract description 34
- 210000004027 cell Anatomy 0.000 claims description 37
- 238000010030 laminating Methods 0.000 claims description 7
- 210000005056 cell body Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 38
- 230000007306 turnover Effects 0.000 abstract description 31
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 230000006872 improvement Effects 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a secondary battery, which relates to the technical field of batteries and comprises a top cover plate, a battery cell main body, an adapter plate and electrode pins, wherein an electric pole is arranged on the top cover plate, two ends of the battery cell main body respectively extend outwards to form pole lugs, pin extension parts are arranged at two side edges along the width direction of one end of each electrode pin, adapter extension parts are arranged at two side edges along the width direction of the adapter plate, the electrode pins are connected with the adapter plate in an attaching manner, and through the additionally arranged pin extension parts and the adapter extension parts, the support area between two welding objects is increased during welding, and short circuit or pole lug reverse insertion is avoided. And because only turn over pin extension and switching extension and need not to turn over whole keysets or electrode pin and turn over for turn over a degree of difficulty little, be difficult for tearing, and turn over a scope little, the process of bending is simple, is difficult for leading to bending and tearing the phenomenon, is favorable to the improvement of electric core quality.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a secondary battery.
Background
The existing secondary battery has poor design space utilization rate and low energy density. At present, two schemes for improving the space utilization rate are provided, one scheme is to bend the lug after ultrasonic welding, and the other scheme is to weld the lug after the pin is directly welded.
The inventor researches and discovers that the size of the ultrasonic welding mark occupies the width of the battery, so that the space utilization rate of the battery is easily wasted, and the improvement of the energy density is not facilitated. Aiming at the situation, the existing solution has the advantages that the bendable pins are used for welding the bent pins and the lugs after the lugs are subjected to super-welding, and the welding marks are changed from being parallel to the pole pieces to being perpendicular, so that the width space is saved. Or the pin substrate is turned over after the pin substrate is welded with the lug, and the substrate is welded with the L-shaped welding block below the pole in a laser mode. No matter which kind of solution, owing to be subject to electric core spatial structure, above-mentioned scheme welded substrate is little with L type welding piece or the bearing area when bending compressing tightly of pin, easy deformation and damage the pole piece during the welding, causes internal short circuit or utmost point ear to insert upside down. In addition, the scheme of bending after welding is adopted, and the whole welding piece is required to be bent, so that the bending is difficult, the welding substrate or the bent pins are easy to tear, and the quality of the battery cell is not improved.
Disclosure of Invention
The invention aims to provide a secondary battery, which can increase the supporting area during compression, avoid short circuit or electrode lug reverse insertion, has a simple bending process after welding, is not easy to cause bending and tearing, and is beneficial to improving the quality of a battery core.
The embodiment of the invention is realized by the following steps:
in a first aspect, the invention provides a secondary battery, which comprises a top cover plate, a cell main body, an adapter plate and electrode pins, wherein the top cover plate is provided with an electrical pole, two ends of the cell main body respectively extend outwards to form pole lugs, the adapter plate is arranged at the end part of the cell main body at intervals, the pole lugs are connected with the adapter plate, one end of each electrode pin is connected with the electrical pole, the other end of each electrode pin is provided with pin extension parts at two side edges along the width direction, the adapter plate is provided with adapter extension parts at two side edges along the width direction, the electrode pins are connected with the adapter plate in an attaching manner, and the pin extension parts and the adapter extension parts are connected and folded on one side of the electrode pins or the adapter plate, which is far away from the cell main body.
In an optional implementation mode, the electrode pin comprises a pin supporting part and a pin bending part which are integrally arranged, the pin supporting part is arranged at the end part of the battery cell main body at intervals, the pin bending part and the pin supporting part are arranged in a bending mode and are connected with the electric pole, the pin extending part is arranged on the edges of two sides of the pin supporting part in the width direction, and the adapter plate is connected with the pin supporting part in a laminating mode.
In an optional embodiment, the adapter plate is attached to one side of the pin supporting portion, which is far away from the battery cell, and the pin extending portion and the adapter extending portion are arranged on one side of the adapter plate, which is far away from the battery cell main body.
In an alternative embodiment, the width of the pin extension is less than or equal to 1/2 the width of the pin support.
In an alternative embodiment, the lead extension parts are integrally disposed at two side edges of the lead support part, and a bottom side edge of the lead support part along the length direction is flush with a bottom side edge of the lead extension part in the same direction.
In an alternative embodiment, the lead extension parts are integrally disposed on two side edges of the lead support part, and a bottom side edge of the lead support part along the length direction is protruded relative to a bottom side edge of the lead extension part in the same direction.
In an alternative embodiment, the adapter extensions are integrally disposed on two side edges of the upper portion of the adapter plate, and a top edge of the adapter plate along the length direction is flush with a top edge of the adapter extension in the same direction.
In an alternative embodiment, the adapter extensions are integrally disposed on both side edges of the upper portion of the adapter plate, and a top side edge of the adapter plate in the length direction is disposed to protrude in the same direction as a top side edge of the adapter extension.
In an optional embodiment, a tab joint area is arranged on one side surface of the adapter plate, which is far away from the battery cell main body, and the tabs are folded and attached to the tab joint area.
In an optional embodiment, the top cover plate is provided with a liquid injection hole.
In an optional embodiment, the top cover plate is provided with a pressure relief hole.
In an optional embodiment, the secondary battery further includes a casing having an opening at one side, the electric core main body, the adapter plate and the electrode pins are accommodated in the casing, and the top cover plate is covered on the casing.
The embodiment of the invention has the beneficial effects that:
according to the secondary battery provided by the embodiment of the invention, the adapter plates are arranged at the end part of the battery cell main body at intervals, the tabs are connected with the adapter plates, one ends of the electrode pins are connected with the electric pole columns, the other ends of the electrode pins are provided with the pin extension parts at the edges of two sides along the width direction, the adapter plates are also provided with the adapter extension parts at the edges of two sides along the width direction, the electrode pins are jointed and connected with the adapter plates, and meanwhile, the pin extension parts are jointed, connected and turned over and arranged at one side of the electrode pins or the adapter plates far away from the battery cell main body, so that the connection process of bending after welding is realized. During actual welding, the pin extension part and the switching extension part are both in an unbent state, the adapter plate is attached to the electrode pin, the pin extension part and the switching extension part are also in an attached state at the moment, and the support area between two welding objects is increased during welding through the additionally arranged pin extension part and the switching extension part. After the laminating is accomplished between butt joint board and the electrode pin, weld between pin extension and the switching extension, then turn over pin extension and switching extension and turn over a side that sets up and keep away from electric core main part at electrode pin or keysets, thereby accomplish the welding action, only turn over to turn over pin extension and switching extension and need not to turn over whole keysets or electrode pin and turn over, make to turn over a degree of difficulty little, be difficult for tearing, and turn over a scope little, the process of bending is simple, be difficult for leading to bending and tearing the phenomenon, be favorable to the improvement of electric core quality. Compared with the prior art, the secondary battery provided by the invention can increase the supporting area during compression, avoid short circuit or reverse insertion of the tab, and is simple in bending process after welding, difficult to cause bending and tearing phenomena and beneficial to improvement of the quality of a battery core.
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 view of the overall structure of a secondary battery according to an embodiment of the present invention;
fig. 2 is a schematic view of a partial structure of a secondary battery according to an embodiment of the present invention;
FIG. 3 is a schematic view of an assembly structure of the connecting plate and the electrode pins in FIG. 2 under a first view angle;
FIG. 4 is a schematic view of an assembly structure of the connecting plate and the electrode pins in FIG. 2 at a second viewing angle;
FIG. 5 is a schematic cross-sectional view taken at A-A in FIG. 2;
FIG. 6 is a schematic cross-sectional view taken at B-B of FIG. 2;
FIG. 7 is a schematic structural diagram of an electrode lead according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of an interposer according to another embodiment of the present invention.
Icon:
100-a secondary battery; 110-a top cover plate; 111-an electrical pole; 113-liquid injection hole; 115-pressure relief vent; 130-a cell body; 131-a tab; 150-an interposer; 151-an adaptor extension; 170-electrode pins; 171-a pin extension; 173-a pin support; 175-pin bending; 190-a housing.
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 orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular 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.
First embodiment
Referring to fig. 1 to 4, the present embodiment provides a secondary battery 100, which increases a supporting area during compression, avoids a short circuit or an inverted insertion of a tab 131, and is simple in a bending process after welding, so that the bending and tearing phenomena are not easily caused, and the quality of a battery cell is improved.
The secondary battery 100 provided in this embodiment, including a top cover plate 110, a cell main body 130, an adaptor plate 150 and electrode pins 170, an electrical terminal 111 is provided on the top cover plate 110, tabs 131 are formed by respectively extending two ends of the cell main body 130 outward, the adaptor plate 150 is disposed at the end of the cell main body 130 at intervals, the tabs 131 are connected to the adaptor plate 150, one end of the electrode pins 170 is connected to the electrical terminal 111, pin extensions 171 are provided at two side edges along a width direction at the other end of the electrode pins 170, adaptor plate 150 is provided with adaptor extensions 151 at two side edges along the width direction, the electrode pins 170 and the adaptor plate 150 are attached to each other, and the pin extensions 171 and the adaptor extensions 151 are attached to each other and turn over and set on one side of the electrode pins 170 or the adaptor plate 150 away from the cell main body 130.
In this embodiment, the two ends of the cell main body 130 form a positive electrode tab 131 and a negative electrode tab 131 respectively, the cell main body 130 includes a positive electrode piece, a negative electrode piece and a diaphragm, which can be formed by winding or lamination process, and the positive electrode piece extends out of the current collector to form the positive electrode tab 131, the extension of the negative electrode piece forms the negative electrode tab 131, and the positive electrode tab 131 and the negative electrode tab 131 are located at two sides of the cell main body 130 respectively. And the two ends of the electric core main body 130 are also respectively provided with an adapter plate 150 and electrode pins 170, wherein the top cover plate 110 is also provided with two electric poles 111, the two electrode pins 170 are respectively arranged below the two electric poles 111 and are respectively connected with the two adapter plates 150, the two adapter plates 150 are respectively connected with the positive pole tab 131 and the negative pole tab 131, and the existing secondary battery 100 can be specifically referred to with respect to the main structure and the battery principle of the secondary battery 100. In the present embodiment, the interposer 150 and the electrode pins 170 on one side are taken as an example for explanation.
It should be noted that, during actual welding, first, the pin extension part 171 and the adapter extension part 151 are both in an unfolded state, the adapter plate is attached to the electrode pin 170, and at this time, the pin extension part 171 and the adapter extension part 151 are also in an attached state, so that the supporting area between two welding objects during welding is increased by the additionally arranged pin extension part 171 and adapter extension part 151. After the laminating is accomplished between butt joint board and electrode pin 170, weld between pin extension 171 and the switching extension 151, then turn over pin extension 171 and switching extension 151 and turn over a setting and keep away from one side of electric core main part 130 at electrode pin 170 or keysets 150, thereby accomplish the welding action, because only turn over pin extension 171 and switching extension 151 and turn over and need not to turn over whole keysets 150 or electrode pin 170, make to turn over and turn over a degree of difficulty little, difficult tearing, and turn over a range little, the process of bending is simple, difficult bending that leads to tears the phenomenon, be favorable to the improvement of electric core quality.
In this embodiment, the adaptor plate 150 and the electrode pin 170, and the electrode pin 170 and the electrical pole 111 are connected by welding, and a laser welding or ultrasonic welding process may be specifically adopted, which is not limited herein.
In this embodiment, a tab 131 engagement area is disposed on a side surface of the adaptor plate 150 away from the cell main body 130, and the tab 131 is folded and attached to the tab 131 engagement area. Specifically, the tab 131 at the end of the cell main body 130 is a foil structure, and is folded and attached to the tab 131 joint area, so that the tab 131 is in a folded state. Preferably, in this embodiment, the tab 131 is folded from both sides and enters the tab 131 junction area, and is welded on the tab 131 junction area at the same time, so as to ensure a good electrical connection effect and avoid a short circuit between the tab 131 and the cell main body 130.
Further, the secondary battery 100 further includes a casing 190 having an opening at one side, the cell main body 130, the interposer 150 and the electrode pin 170 are all accommodated in the casing 190, and the top cover plate 110 is covered on the casing 190. Specifically, the casing 190 is an aluminum casing, and only the top end of the casing is provided with an opening adapted to the top cover plate 110, the top cover plate 110 is covered on the opening and welded to the edge of the casing 190, so as to form an accommodating cavity, which is mainly used for accommodating the cell main body 130 and simultaneously covering the adaptor plate 150 and the electrode pins 170.
In this embodiment, the top cover plate 110 is provided with a through hole for the electric pole 111 to pass through, and is also provided with a liquid injection hole 113 and a pressure relief hole 115 at intervals, so as to achieve the functions of liquid injection and pressure relief respectively.
Referring to fig. 2 to 6, the electrode pin 170 includes a pin supporting portion 173 and a pin bending portion 175, the pin supporting portion 173 is disposed at an end of the cell main body 130 at an interval, the pin bending portion 175 and the pin supporting portion 173 are bent and connected to the electrical electrode post 111, the pin extending portion 171 is disposed at two side edges of the pin supporting portion 173 along a width direction, and the interposer 150 is attached to the pin supporting portion 173. In this embodiment, the pin supporting portion 173 and the pin bending portion 175 are in a mutually perpendicular state, so that the electrode pin 170 is in an L-shaped structure, and the pin supporting portion 173 and the pin bending portion 175 are both in a sheet shape, the pin supporting portion 173 is disposed along a vertical direction and is parallel to the end surface of the cell main body 130 (perpendicular to the large surface of the cell main body 130), and the pin bending portion 175 is disposed along a horizontal direction and is parallel to the top cover. During actual welding, the pin bending portion 175 and the electrical terminal 111 on the top cover plate 110 are welded together, so that the pin supporting portion 173 is suspended in the vertical direction, the adapter plate 150 is welded to the pin supporting portion 173, and finally the pin extending portion 171 and the adapter extending portion 151 are folded toward the middle of the pin supporting portion 173 to form a folding connection structure.
It should be noted that the width direction mentioned in the present embodiment refers to the short axis side direction on the electrode lead 170, and the width direction refers to the width direction of the lead supporting portion 173 and the lead bending portion 175 at the same time, that is, the width direction of the lead supporting portion 173 and the width direction of the lead bending portion 175 are along the same direction.
In this embodiment, the adaptor plate 150 and the pin support portion 173 are attached to one side of the cell away from the cell, and the pin extension portion 171 and the adaptor extension portion 151 are folded and disposed on one side of the adaptor plate 150 away from the cell main body 130. Specifically, the adapter plate is attached to the outer side surface of the pin support 173, so that the attachment between the adapter plate 150 and the pin support 173 is facilitated, and the turnover of the adapter extension 151 and the pin extension 171 is also facilitated.
In the present embodiment, the width of the lead extension 171 is less than or equal to 1/2 of the width of the lead support 173. Specifically, the width of the pin extending portion 171 is less than half of the width of the pin supporting portion 173, so that even after the folding is completed, the pin extending portion 171 does not reach the center of the pin supporting portion 173, and the overlapping of the pin extending portions 171 at the two ends after the folding is completed, which causes folding interference, is avoided. Of course, it is also possible to limit the width of the adapter extensions 151 to be less than or equal to half of the width of the adapter plate 150, so that the two adapter extensions 151 will not interfere with each other after being folded.
In this embodiment, the lead extending portions 171 are integrally disposed on two side edges of the lead supporting portion 173, and the bottom side edge of the lead supporting portion 173 along the length direction is flush with the bottom side edge of the lead extending portion 171 in the same direction. Specifically, the lead extension portion 171 is rectangular, and the lead support portion 173 is also rectangular, and the length of the lead extension portion 171 is less than the length of the lead support portion 173, so that the lead extension portion 171 can protrude from the two side edges of the lead support portion 173, and the bottom side edges of the lead extension portion 171 and the lead support portion 173 are flush, thereby reducing the material consumption and saving the material.
Referring to fig. 7, in another preferred embodiment of the present invention, the lead extension portions 171 are integrally disposed on two side edges of the lead support portion 173, and bottom edges of the lead support portion 173 along the length direction are protruded relative to bottom edges of the lead extension portions 171 in the same direction. The welding function can be accomplished to it equally to structural strength is higher, and can further increase the area of contact with keysets 150, guarantees the welding effect.
Referring to fig. 4, in the present embodiment, the adaptor extensions 151 are integrally disposed on two side edges of the upper portion of the adaptor plate 150, and the top edge of the adaptor plate 150 along the length direction is flush with the top edge of the adaptor extension 151 in the same direction. Specifically, the adapting extension 151 is rectangular, and the adapting plate 150 is also rectangular, and the length of the adapting extension 151 is much shorter than that of the adapting plate 150, so that the adapting extension 151 can protrude from the edges of the two sides of the adapting plate 150, and the adapting extension 151 is flush with the edge of the top side of the adapting plate 150, thereby reducing the material consumption and saving the material.
It should be noted that the adaptor plate 150 may be a single plate structure, and when the end portion of the cell main body 130 extends out of the plurality of tabs 131, the adaptor plate 150 may also be a multi-plate structure, for example, the adaptor plate 150 in this embodiment is a double-plate structure, which can implement welding of two tabs 131.
Referring to fig. 8, in another preferred embodiment of the present invention, the adaptor extensions 151 are integrally formed at both side edges of the upper portion of the adaptor plate 150, and the top side edge of the adaptor plate 150 in the length direction is protruded with respect to the top side edge of the adaptor extensions 151 in the same direction. It can accomplish the welding function equally to structural strength is higher.
In summary, in the secondary battery 100 provided in this embodiment, the adaptor plate 150 is disposed at the end of the battery cell main body 130 at intervals, the tab 131 is connected to the adaptor plate 150, one end of the electrode pin 170 is connected to the electrical terminal 111, the other end of the electrode pin is provided with the pin extension 171 at the two side edges along the width direction, the adaptor plate 150 is also provided with the adaptor extension 151 at the two side edges along the width direction, the electrode pin 170 is attached to the adaptor plate 150, and meanwhile, the pin extension 171 is attached to the adaptor extension 151 and is folded and disposed at one side of the electrode pin 170 or the adaptor plate 150 away from the battery cell main body 130, so as to implement the connection process of bending after welding. In actual welding, firstly, the pin extension part 171 and the adapter extension part 151 are both in an unfolded state, the adapter plate is attached to the electrode pin 170, at this time, the pin extension part 171 and the adapter extension part 151 are also in an attached state, and the support area between two welding objects is increased through the additionally arranged pin extension part 171 and the adapter extension part 151 during welding. After the laminating is accomplished between butt joint board and electrode pin 170, weld between pin extension 171 and the switching extension 151, then turn over pin extension 171 and switching extension 151 and turn over a setting and keep away from one side of electric core main part 130 at electrode pin 170 or keysets 150, thereby accomplish the welding action, because only turn over pin extension 171 and switching extension 151 and turn over and need not to turn over whole keysets 150 or electrode pin 170, make to turn over and turn over a degree of difficulty little, difficult tearing, and turn over a range little, the process of bending is simple, difficult bending that leads to tears the phenomenon, be favorable to the improvement of electric core quality.
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 utility model provides a secondary battery, its characterized in that, includes lamina tecti, electric core main part, keysets and electrode pin, be provided with electric property utmost point post on the lamina tecti, the both ends of electric core main part outwards extend respectively and are formed with utmost point ear, the keysets interval sets up the tip of electric core main part, utmost point ear with the keysets is connected, the one end of electrode pin with electric property utmost point post is connected, the other end of electrode pin is provided with the pin extension at the both sides edge along width direction, the keysets is provided with the switching extension at the both sides edge along width direction, the electrode pin with the keysets laminating is connected, the pin extension with the laminating of switching extension is connected and is rolled over the setting and be in the electrode pin or the keysets is kept away from one side of electric core main part.
2. The secondary battery of claim 1, wherein the electrode pins comprise a pin supporting portion and a pin bending portion which are integrally arranged, the pin supporting portion is arranged at the end portion of the battery cell main body at intervals, the pin bending portion and the pin supporting portion are arranged in a bending mode and are connected with the electrical terminal, the pin extending portion is arranged on two side edges of the pin supporting portion in the width direction, and the adapter plate is connected with the pin supporting portion in a laminating mode.
3. The secondary battery of claim 2, wherein the adapter plate is attached to one side of the pin support portion, which is away from the battery cell, and the pin extension portion and the adapter extension portion are folded and arranged on one side of the adapter plate, which is away from the battery cell main body.
4. The secondary battery of claim 2, wherein the width of the pin extension is less than or equal to 1/2 of the width of the pin support.
5. The secondary battery according to claim 2, wherein the lead extension parts are integrally provided at both side edges of the lead support part, and bottom side edges of the lead support part in a length direction are flush with bottom side edges of the lead extension parts in the same direction.
6. The secondary battery according to claim 2, wherein the lead extension parts are integrally provided at both side edges of the lead support part, and bottom side edges of the lead support part in a length direction are protrusively provided with respect to bottom side edges of the lead extension parts in the same direction.
7. The secondary battery according to any one of claims 1 to 6, wherein the adapter extensions are integrally provided at both side edges of an upper portion of the adapter plate, and a top side edge of the adapter plate in a length direction is flush with a top side edge of the adapter extension in the same direction.
8. The secondary battery according to any one of claims 1 to 6, wherein the adapter extensions are integrally provided at both side edges of an upper portion of the adapter plate, and a top side edge of the adapter plate in a length direction is protrusively provided with respect to a top side edge of the adapter extension in the same direction.
9. The secondary battery of any one of claims 1 to 6, wherein a tab engagement area is arranged on a side surface of the adapter plate away from the battery cell main body, and the tab is folded and attached to the tab engagement area.
10. The secondary battery of any one of claims 1 to 6, further comprising a case having an opening at one side, wherein the cell body, the interposer, and the electrode pins are accommodated in the case, and the top cover plate is covered on the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607955.8A CN114824676A (en) | 2022-05-31 | 2022-05-31 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607955.8A CN114824676A (en) | 2022-05-31 | 2022-05-31 | Secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114824676A true CN114824676A (en) | 2022-07-29 |
Family
ID=82519251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210607955.8A Pending CN114824676A (en) | 2022-05-31 | 2022-05-31 | Secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114824676A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013054915A (en) * | 2011-09-05 | 2013-03-21 | Toyota Industries Corp | Secondary battery |
| CN108598353A (en) * | 2018-01-16 | 2018-09-28 | 宁德时代新能源科技股份有限公司 | Rechargeable battery |
| CN208014753U (en) * | 2018-03-01 | 2018-10-26 | 浙江衡远新能源科技有限公司 | A kind of lithium ion battery and battery pack |
| CN209658320U (en) * | 2019-05-24 | 2019-11-19 | 宁德时代新能源科技股份有限公司 | Battery unit and battery modules |
| CN111987340A (en) * | 2019-05-24 | 2020-11-24 | 宁德时代新能源科技股份有限公司 | Battery unit, manufacturing method thereof and battery module |
-
2022
- 2022-05-31 CN CN202210607955.8A patent/CN114824676A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013054915A (en) * | 2011-09-05 | 2013-03-21 | Toyota Industries Corp | Secondary battery |
| CN108598353A (en) * | 2018-01-16 | 2018-09-28 | 宁德时代新能源科技股份有限公司 | Rechargeable battery |
| CN208014753U (en) * | 2018-03-01 | 2018-10-26 | 浙江衡远新能源科技有限公司 | A kind of lithium ion battery and battery pack |
| CN209658320U (en) * | 2019-05-24 | 2019-11-19 | 宁德时代新能源科技股份有限公司 | Battery unit and battery modules |
| CN111987340A (en) * | 2019-05-24 | 2020-11-24 | 宁德时代新能源科技股份有限公司 | Battery unit, manufacturing method thereof and battery module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102130319B (en) | Rechargeable battery | |
| CN102738428B (en) | Secondary cell | |
| CN217562767U (en) | Secondary battery assembly structure and secondary battery | |
| US8715842B2 (en) | Battery pack | |
| CN109244285A (en) | Power battery top cap and power battery | |
| CN216288853U (en) | Utmost point ear is drawn forth subassembly, utmost point core subassembly and battery | |
| CN217485520U (en) | Multi-cell secondary battery | |
| CN218867347U (en) | Battery cell pole group and battery cell | |
| CN210136942U (en) | Battery module | |
| CN211907567U (en) | Utmost point post connection structure, battery cell and battery module | |
| CN114824676A (en) | Secondary battery | |
| CN214254668U (en) | Novel connection piece for lithium cell | |
| CN216354342U (en) | Battery core pole group and laminated battery | |
| CN214542458U (en) | Conducting strip structure and mobile energy storage device | |
| CN210074010U (en) | Composite tab and battery cell | |
| CN115347331A (en) | Battery, battery module, battery pack, and battery manufacturing method | |
| CN215578910U (en) | Battery pack and electric device | |
| CN218070125U (en) | Connection piece, top cap subassembly, battery module and consumer | |
| CN220492134U (en) | Battery pack and single battery thereof | |
| CN221447405U (en) | Secondary battery | |
| CN220066035U (en) | Battery and battery device | |
| CN220492127U (en) | Current collecting disc and single battery | |
| CN216698642U (en) | Battery module and energy storage power supply | |
| CN216354457U (en) | Cylindrical battery | |
| CN213752771U (en) | Novel winding type battery cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Applicant after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Address before: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Applicant before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |
|
| CB02 | Change of applicant information |