CN215070318U - Dislocation electric core structure of square lithium ion battery - Google Patents
Dislocation electric core structure of square lithium ion battery Download PDFInfo
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- CN215070318U CN215070318U CN202121367489.8U CN202121367489U CN215070318U CN 215070318 U CN215070318 U CN 215070318U CN 202121367489 U CN202121367489 U CN 202121367489U CN 215070318 U CN215070318 U CN 215070318U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a dislocation cell structure of a square lithium ion battery, which comprises a cell group; a plurality of heat dissipation gaps are arranged on two sides of the electric core group in a staggered manner; the battery cell group comprises a plurality of single battery cells arranged side by side and an integrated plate arranged at the tops of the single battery cells; and two adjacent monomer battery cores are staggered and offset. After the plurality of monomer battery cores are staggered and abutted, the integrated plate is used for assembling to form the battery core group, so that a plurality of heat dissipation gaps are formed on two sides of the battery core group, the specific surface area of the battery core group is greatly increased, the heat dissipation performance of the battery core group is obviously improved, and the structure can achieve a good heat dissipation effect without arranging a heat dissipation device; moreover, compare in adopting signal acquisition line and connection piece to assemble single electric core, adopt integrative board to more firm to the connection of monomer electricity core, the equipment is simple swift moreover, and the electric core group can not arouse the electric core group trouble because of becoming flexible at the course of the work, is showing the whole security performance who has promoted the electric core group.
Description
Technical Field
The utility model relates to a lithium ion battery technical field especially relates to a square lithium ion battery's dislocation electric core structure.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During charge and discharge, lithium ions are inserted and extracted back and forth between the positive electrode and the negative electrode: in the charging process, lithium ions are extracted from the positive electrode and are inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the discharging process is the reverse of the charging process.
At present, the battery cell structure of the lithium ion battery on the market is generally a positive-negative symmetric structure: the explosion-proof valve is arranged at the center of the sealing cover plate, and the positive pole column and the negative pole column are symmetrically arranged at two sides of the explosion-proof valve. When the monomer electric cores of the structure are assembled into a group, a plurality of connecting pieces are needed to be adopted to connect the monomer electric cores one by one, and an independent voltage signal acquisition line is needed to be used for acquiring voltage data of the monomer electric cores.
However, after the electrical core assembly with the above structure is completed, the specific surface area is small, the heat dissipation effect is poor, and especially when the electrical core assembly generates large-current discharge, because the heat cannot be dissipated quickly, the normal operation of the electrical core assembly can be ensured only by increasing a heat dissipation device/system between the electrical cores to enhance the heat dissipation effect; and connecting sheets and signal collecting wires are used in the assembling process, the assembling production process of the battery core can be complicated, the assembling of the battery core group is complicated, the assembling efficiency is low, and the overall safety performance of the battery is affected due to the fault caused by the looseness of the signal collecting wires or the connecting sheets in the working process of the battery core group.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a dislocation electric core structure of square lithium ion battery, aim at solving traditional square lithium ion battery electric core after the equipment is accomplished, specific surface area is less, the radiating effect is poor, especially when the electric core group takes place heavy current and discharges, because the heat can't be dispelled fast, generally need to increase heat abstractor/system between the electric core to promote the radiating effect and just can guarantee the normal operating of electric core group; and the connecting sheet and the signal collecting wire are used in the assembling process, the assembling production process of the battery core can be complicated, the assembling of the battery core group is complicated, the assembling efficiency is low, and the problem that the overall safety performance of the battery is influenced because the signal collecting wire or the connecting sheet is loosened easily in the working process of the battery core is caused.
In order to achieve the above object, the utility model provides a following technical scheme:
a staggered cell structure of a square lithium ion battery comprises a cell group; a plurality of heat dissipation gaps are arranged on two sides of the electric core group in a staggered manner; the battery cell group comprises a plurality of single battery cells arranged side by side and an integrated plate arranged at the tops of the single battery cells; and two adjacent monomer battery cores are in staggered butt joint.
Further, two adjacent monomer battery cores are connected in an overturning and abutting mode.
In the application, two adjacent monomer battery cells are turned and abutted, that is, one of the monomer battery cells is used as a reference, the other monomer battery cell rotates by 180 degrees, and then the two monomer battery cells are abutted; at this time, the positive electrode of one of the unit cells corresponds to the negative electrode of the other unit cell.
Further, a plurality of the unit cells are arranged in series through the integrated plate.
Furthermore, the integrated plate comprises a connecting sheet, a protection plate and a data acquisition module arranged on the protection plate; one side of the connecting sheet is connected with the single battery cell, and the other side of the connecting sheet is connected with the protective plate; the width of the protection plate is smaller than the distance between the anode and the cathode of the single battery cell; the connecting sheet is used for connecting the positive electrodes and the negative electrodes of two adjacent monomer battery cells; the data acquisition module is used for acquiring voltage data of the single battery cell.
Furthermore, both ends of the connecting sheet are respectively provided with a positive connecting hole and a negative connecting hole; the positive electrode connecting hole is matched with the positive electrode of the single battery cell; the negative electrode connecting hole is matched with the negative electrode of the single battery cell.
In this application, the connection piece is used for connecting two adjacent monomer electricity cores, therefore, for same the connection piece, anodal connecting hole and one the anodal back of connecting of monomer electricity core, the negative pole connecting hole should be with another the negative pole of monomer electricity core is connected, makes two adjacent form series structure between the monomer electricity core. By analogy, the connection between the plurality of monomer battery cells and the connecting sheet is also the same. It should be noted that one end of the connecting piece at the outermost side of the battery core group is connected with the positive electrode or the negative electrode of the single battery core, and the other end is a movable end, namely, the connecting piece serves as the positive electrode or the negative electrode of the battery core group and is used for being connected with the outside.
Furthermore, a plurality of connecting pins are arranged on two opposite sides of the protection plate; the connecting pins correspond to the connecting sheets one to one.
Further, the single battery cell comprises a cell main body; the end face of the battery cell main body, which is close to the integrated plate, is provided with a negative pole column, a positive pole column, an explosion-proof valve and a liquid injection hole in sequence; the negative pole column is matched with the negative pole connecting hole; the positive pole is matched with the positive pole connecting hole.
Further, the negative pole post and the positive pole post are arranged asymmetrically.
In this application, explosion-proof valve sets up the positive post is kept away from one side of negative pole post, just explosion-proof valve sets up the positive post with annotate between the liquid hole. Thus, the negative pole column and the positive pole column are asymmetrically arranged on the end face of the single battery cell.
In this application, explosion-proof valve sets up the positive post is kept away from one side of negative pole post makes monomer electricity core with the back is assembled to the intergral template, the intergral template can not cover explosion-proof valve has avoided explosion-proof valve is covered the incident that arouses, has promoted the security performance of electricity core group.
Furthermore, an explosion-proof sheet is arranged in the explosion-proof valve.
The utility model provides a dislocation electric core structure of square lithium ion battery utilizes the intergral template to assemble and form the electric core group after offsetting through the dislocation of a plurality of monomer electric cores for the electric core group both sides form a plurality of heat dissipation clearances, have greatly increased the specific surface area of electric core group, show the heat dispersion of the electric core group that improves, make this application structure need not set up heat abstractor can reach better radiating effect; meanwhile, the integrated board is adopted to connect the monomer battery cores, the signal acquisition line is cancelled, the assembly process of the battery core group is simplified, the production efficiency of the battery core group is improved, and the production cost of the battery core group is reduced. In addition, compare and assemble single electric core in adopting signal acquisition line and connection piece, adopt integrative board to more firm to the connection of monomer electricity core, the equipment is simple swift moreover, and the electric core group can not arouse the electric core group trouble because of becoming flexible at the course of the work, is showing the whole security performance who has promoted the electric core group.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a perspective view of a staggered cell structure of a square lithium ion battery according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of detail A of FIG. 1;
fig. 3 is a schematic perspective view of the cell in fig. 1.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front, back, top and bottom … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
At present, after the electric core groups on the market are assembled, the specific surface area is small, the heat dissipation effect is poor, and particularly when the electric core groups are subjected to heavy-current discharge, heat cannot be dissipated quickly, so that the normal operation of the electric core groups can be ensured only by increasing a heat dissipation device/system between electric cores to improve the heat dissipation effect; and connecting sheets and signal collecting wires are used in the assembling process, the assembling production process of the battery core can be complicated, the assembling of the battery core group is complicated, the assembling efficiency is low, faults are easily caused due to the looseness of the signal collecting wires or the connecting sheets in the working process of the battery core, and the overall safety performance of the battery is influenced. In order to solve the technical problem, the utility model provides a square lithium ion battery's dislocation electric core structure.
As shown in fig. 1, a staggered cell structure of a square lithium ion battery provided in an embodiment of the present invention includes a cell group 1; a plurality of heat dissipation gaps 2 are arranged on two sides of the electric core group 1 in a staggered manner; the battery core group 1 comprises a plurality of single battery cells 11 arranged side by side and an integrated plate 12 arranged on the tops of the single battery cells 11; two adjacent monomer electric cores 11 are in staggered butt joint.
Two adjacent monomer electric cores 11 overturn and abut.
Specifically, in the embodiment of the present application, two adjacent single battery cells 11 are turned over and abutted, where one of the single battery cells 11 is taken as a reference, and the other single battery cell 11 rotates 180 degrees, and then the two single battery cells are abutted; at this time, the positive electrode of one of the unit cells 11 corresponds to the negative electrode of the other unit cell 11.
A plurality of the unit cells 11 are arranged in series through the integrated plate 12.
Referring to fig. 2, in the present embodiment, the integrated board 12 includes a connecting sheet 121, a protection plate 122, and a data acquisition module (not labeled in the figure) disposed on the protection plate 122; one side of the connecting piece 121 is connected to the single battery cell 11, and the other side is connected to the protective plate 122; the width of the protection plate 122 is smaller than the distance between the positive electrode and the negative electrode of the single battery cell 11; the connecting piece 121 is used for connecting the positive electrode and the negative electrode of two adjacent monomer battery cells 11; the data acquisition module is used for acquiring voltage data of the single battery cell 11.
Both ends of the connecting sheet 121 are respectively provided with a positive connecting hole 1211 and a negative connecting hole 1212; the positive connection hole 1211 is matched with the positive electrode of the single battery cell 11; the negative electrode connecting hole 1212 is adapted to the negative electrode of the unit cell 11.
Specifically, in the embodiment of the present application, the connecting tab 121 is used to connect two adjacent monomer electric cores 11, and therefore, for the same connecting tab 121, after the positive electrode connecting hole 1211 is connected to the positive electrode of one monomer electric core 11, the negative electrode connecting hole 1212 should be connected to the negative electrode of the other monomer electric core 11, so that a series structure is formed between the two adjacent monomer electric cores 11. By analogy, the connection between the plurality of unit cells 11 and the connecting sheet 121 is also the same. It should be noted that one end of the connecting piece 121 at the outermost side of the battery core assembly 1 is connected to the positive electrode or the negative electrode of the single battery cell 11, and the other end is a movable end, i.e. serving as the positive electrode or the negative electrode of the battery core assembly 1, for connecting with the outside.
A plurality of connecting pins 1221 are further disposed on opposite sides of the protective plate 122; the connection pins 1221 correspond to the connection pads 121 one to one.
Referring to fig. 3, in the present embodiment, the unit cells 11 include a cell main body 111; the end surface of the cell main body 111 close to the integrated plate 12 is sequentially provided with a negative pole column 112, a positive pole column 113, an explosion-proof valve 114 and a liquid injection hole 115; the negative pole column 112 is matched with the negative pole connecting hole 1212; the positive post 113 is fitted to the positive connection hole 1211.
The negative post 112 is disposed asymmetrically to the positive post 113.
Specifically, in the embodiment of the present application, the explosion-proof valve 114 is disposed on a side of the positive post 113 away from the negative post 112, and the explosion-proof valve 114 is disposed between the positive post 113 and the liquid injection hole 115. In this way, the negative electrode tab 112 and the positive electrode tab 113 are disposed asymmetrically on the end face of the cell 11.
In this embodiment, the explosion-proof valve 114 is disposed on one side of the positive post 113 away from the negative post 112, so that after the cell 11 and the integrated plate 12 are assembled, the integrated plate 12 does not cover the explosion-proof valve 114, thereby avoiding the safety accident caused by the cover of the explosion-proof valve 114, and improving the safety performance of the cell pack 1.
An explosion-proof plate (not shown) is arranged in the explosion-proof valve 114.
It should be noted that, in this embodiment of the application, two adjacent monomer electric cores 11 are in staggered abutting joint, which means that after two adjacent monomer electric cores 11 are turned over and abutted, because the negative pole and the positive pole of the monomer electric core 11 are asymmetrically arranged, two monomer electric cores 11 may be staggered, that is, one side of the monomer electric core 11 close to the liquid injection hole may extend out of one side of the monomer electric core 11 close to the negative pole. When a plurality of adjacent monomer electricity core 11 misplaces and offsets, will form heat dissipation clearance 2, greatly increased the specific surface area of electric core group 1, promoted the heat dispersion of electric core group 1.
In this embodiment of the application, the connection between the connection sheet 121 and the connection pin 1221, and the connection between the connection sheet 121 and the positive and negative poles of two adjacent monomer electric cores 11 are all welded.
The utility model provides a dislocation electric core structure of square lithium ion battery, utilize integrated plate 12 to assemble and form electric core group 1 after offsetting through the dislocation of a plurality of monomer electric cores 11, make electric core group 1 both sides form a plurality of heat dissipation clearances 2, greatly increased electric core group 1 specific surface area, the heat dispersion of showing the electric core group 1 that improves, make this application structure need not set up heat abstractor can reach better radiating effect; meanwhile, the integrated board 12 is adopted to connect the monomer battery cores 11, a signal acquisition line is cancelled, the assembly process of the battery core group 1 is simplified, the production efficiency of the battery core group 1 is improved, and the production cost of the battery core group 1 is reduced. In addition, compare in adopting signal acquisition line and connection piece to assemble single electric core 11, adopt integrative board 12 to more firm to the connection of monomer electric core 11, the equipment is simple swift moreover, and electric core group 1 can not arouse electric core group trouble because of not hard up in the course of the work, is showing the whole security performance who has promoted electric core group 1.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (9)
1. A staggered cell structure of a square lithium ion battery is characterized by comprising a cell group; a plurality of heat dissipation gaps are arranged on two sides of the electric core group in a staggered manner; the battery cell group comprises a plurality of single battery cells arranged side by side and an integrated plate arranged at the tops of the single battery cells; and two adjacent monomer battery cores are in staggered butt joint.
2. The staggered cell structure of claim 1, wherein two adjacent individual cells are connected in an inverted and abutting manner.
3. The staggered cell structure of claim 1, wherein a plurality of the individual cells are arranged in series through the integrated plate.
4. The staggered cell structure of the square lithium ion battery of claim 1, wherein the integrated plate comprises a connecting sheet, a protection plate, and a data acquisition module arranged on the protection plate; one side of the connecting sheet is connected with the single battery cell, and the other side of the connecting sheet is connected with the protective plate; the width of the protection plate is smaller than the distance between the anode and the cathode of the single battery cell.
5. The staggered cell structure of the square lithium ion battery of claim 4, wherein both ends of the connecting sheet are respectively provided with a positive connecting hole and a negative connecting hole; the positive electrode connecting hole is matched with the positive electrode of the single battery cell; the negative electrode connecting hole is matched with the negative electrode of the single battery cell.
6. The staggered cell structure of the square lithium ion battery of claim 4, wherein a plurality of connection pins are further arranged on two opposite sides of the protection plate; the connecting pins correspond to the connecting sheets one to one.
7. The staggered cell structure of a square lithium ion battery of claim 5, wherein the individual cells comprise a cell body; the end face of the battery cell main body, which is close to the integrated plate, is provided with a negative pole column, a positive pole column, an explosion-proof valve and a liquid injection hole in sequence; the negative pole column is matched with the negative pole connecting hole; the positive pole is matched with the positive pole connecting hole.
8. The staggered cell structure of claim 7, wherein the negative pole and the positive pole are disposed asymmetrically.
9. The staggered cell structure of claim 7, wherein an explosion-proof plate is disposed in the explosion-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121367489.8U CN215070318U (en) | 2021-06-18 | 2021-06-18 | Dislocation electric core structure of square lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121367489.8U CN215070318U (en) | 2021-06-18 | 2021-06-18 | Dislocation electric core structure of square lithium ion battery |
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| CN215070318U true CN215070318U (en) | 2021-12-07 |
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| CN202121367489.8U Active CN215070318U (en) | 2021-06-18 | 2021-06-18 | Dislocation electric core structure of square lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328209A (en) * | 2021-06-18 | 2021-08-31 | 深圳市雄韬电源科技股份有限公司 | Dislocation electric core structure of square lithium ion battery |
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2021
- 2021-06-18 CN CN202121367489.8U patent/CN215070318U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328209A (en) * | 2021-06-18 | 2021-08-31 | 深圳市雄韬电源科技股份有限公司 | Dislocation electric core structure of square lithium ion battery |
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