CN217114688U - Connection structure for series connection of high-capacity single batteries - Google Patents
Connection structure for series connection of high-capacity single batteries Download PDFInfo
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- CN217114688U CN217114688U CN202122630241.2U CN202122630241U CN217114688U CN 217114688 U CN217114688 U CN 217114688U CN 202122630241 U CN202122630241 U CN 202122630241U CN 217114688 U CN217114688 U CN 217114688U
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Abstract
The utility model belongs to the technical field of batteries, in particular to a connection structure for connecting large-capacity single batteries in series, which comprises two battery packs; the two battery packs comprise single batteries; the positive current collecting column and the negative current collecting column are arranged on the same side face of the single battery 1; when the two battery packs are connected in series, the positive pole current collecting column on one battery pack is relatively clung to the negative pole current collecting column on the other battery pack and is clamped through the strip-shaped clamp; grooves are arranged on the positive current collecting column and the negative current collecting column, and the grooves are positioned on the same side of the relative close contact surface between the positive current collecting column and the negative current collecting column and on the surface adjacent to the relative close contact surface; and two ends of the bar-shaped fixture are correspondingly clamped in the groove on the positive current collecting post and the groove on the negative current collecting post respectively and are inserted into the grooves from top to bottom. The utility model has simple series connection of batteries, good stability and no shaking; the safety is good, the occupied space is small, the operation difficulty is low, the working efficiency is high, and the cost is low.
Description
Technical Field
The utility model belongs to the technical field of the battery, especially, relate to a connection structure of large capacity battery cell series for the series connection of large capacity lithium ion battery cell.
Background
The high-capacity lithium battery is one of the developing directions of the lithium battery, and can be applied to the fields of energy storage and power batteries. Because large capacity battery cell's voltage is lower, but its electric current is very big, adopt the mode of a plurality of battery cell series connection to use when in actual use, but present series connection mode is usually to pass through the wire with battery cell's positive pole and negative pole and is connected, carry out fastening connection through the connecting piece to a plurality of battery cell simultaneously and protect, it leads to the series connection unstability to avoid a plurality of battery cell to rock each other, but this often can make the sectional area of connecting piece great, occupation usage space and increase use cost, and the popularization is reduced.
For example, patent CN 111341985 a discloses a battery system, in which a plurality of batteries are connected in series by a battery cover plate, the battery cover plate includes a negative internal leading terminal, an end plate and a positive internal leading terminal which are electrically connected in sequence, and the negative internal leading terminal and the positive internal leading terminal are connected with the end plate by welding, riveting or directly connecting together by using an injection molding piece; the riveting or injection molding part is connected into an integral structure by welding, and then the flexible assembly and disassembly cannot be realized, the flexibility is poor, and the use is limited.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem when the existing large-capacity single batteries are connected in series, the utility model discloses a connection structure for connecting the large-capacity single batteries in series, the series connection of the batteries is simple, the stability is good, and the batteries can not shake; the safety is good, the occupied space is small, the operation difficulty is low, the working efficiency is high, and the cost is low.
A connection structure for connecting high-capacity single batteries in series comprises two battery packs; the two battery packs comprise single batteries; the positive current collecting column and the negative current collecting column are arranged on the same side face of the single battery 1; when the two battery packs are connected in series, the positive pole current collecting column on one battery pack is relatively clung to the negative pole current collecting column on the other battery pack and is clamped by the strip-shaped clamp.
Furthermore, grooves are formed in the positive current collecting column and the negative current collecting column, and are positioned on the same side of the relatively close contact surface between the positive current collecting column and the negative current collecting column and on the surface adjacent to the relatively close contact surface; and two ends of the bar-shaped fixture are correspondingly clamped in the groove on the positive current collecting post and the groove on the negative current collecting post respectively and are inserted into the grooves from top to bottom.
Preferably, the groove, the positive current collecting column and the negative current collecting column are axially parallel, and the groove is as long as the positive current collecting column.
Preferably, the cross section of the groove is a right trapezoid or an isosceles trapezoid, and the surface where the long side of the trapezoid is located is an inner concave surface of the groove.
Further preferably, the cross section of the strip-shaped clamp is U-shaped; the end face of the U-shaped opening is matched with the cross section of the groove.
Furthermore, through grooves are formed in the close attaching surfaces of the positive current collecting column and the negative current collecting column; and a containing cavity is formed between the through groove on the positive current collecting column and the through groove on the negative current collecting column.
Preferably, the through groove is a U-shaped through groove.
Preferably, the number of the through grooves is one or more; the number of the through grooves on the positive current collecting post is equal to that of the through grooves on the negative current collecting post, and the positions of the through grooves correspond to those of the through grooves on the positive current collecting post.
Furthermore, the connection structure for connecting the large-capacity single batteries in series also comprises a heat pipe arranged in the accommodating cavity.
Further, one end of the heat pipe is located outside the accommodating cavity and is arranged on the upper surface of the single battery.
Preferably, the heat pipe is an L-shaped pipe consisting of a heat pipe horizontal section and a heat pipe vertical section; the vertical section of the heat pipe is arranged in the accommodating cavity; the horizontal section of the heat pipe is positioned outside the accommodating cavity and extends to the upper surface of the single battery.
Furthermore, the connection structure for connecting the large-capacity single batteries in series also comprises a semiconductor refrigerating device arranged on the upper surfaces of the single batteries; the semiconductor refrigerating device is communicated with the horizontal section of the heat pipe.
Furthermore, the number of the single batteries in each group of battery pack is one or more.
Furthermore, when a plurality of single batteries are arranged, the single batteries in each group of battery pack are sequentially connected, and the positive current collecting column and the negative current collecting column are positioned on the same side; a plurality of single batteries between the two battery packs are in mirror symmetry, and the positive pole current collecting column and the negative pole current collecting column are staggered.
Furthermore, the positive current collecting column and the negative current collecting column are partially or completely exposed out of the side surface of the single battery.
Further, the length of the positive current collecting column and the length of the negative current collecting column are smaller than the length of the single battery.
The utility model has the advantages that:
1. the utility model discloses utilize coupling assembling to establish ties two adjacent battery cells to satisfy actual user demand, during series connection simultaneously, guarantee that a plurality of battery cell stable in structure of establishing ties can not rock, thereby guarantee the stability and the security of battery cell series connection.
2. The utility model discloses utilize anodal current collection post and negative pole current collection post to realize that the contact of positive negative pole between the battery cell is connected, improve the stability of establishing ties between the single battery, rethread coupling assembling is adjacent anodal current collection post and negative pole current collection post fastening connection to with two adjacent battery cells entering the field firm connection, it is convenient to connect, stable in structure, occupation space is little.
3. The utility model discloses, the plug-in card formula connected mode between recess and the bar fixture, simple structure, cost are low, have reduced use cost to can guarantee that adjacent battery cell's connection is firm reliable.
4. The utility model discloses, when connecting adjacent battery cell, the sharp card of bar fixture is in the recess to insert the chucking from top to bottom and realize the stable connection between the adjacent battery cell, improve the simplicity of connected mode between the battery cell, improve the efficiency of battery cell when dismouting and maintenance, save time, the operation degree of difficulty is low, practices thrift the dismouting time, improves work efficiency, and simple structure is with low costs.
5. The utility model arranges the through groove on the close attaching surface of the positive pole current collecting column and the negative pole current collecting column; and when positive pole mass flow post and negative pole mass flow post hug closely and be connected, lead to form between the groove and hold the chamber, arrange the heat pipe in and hold the intracavity, can adjust between the monomer battery of establishing ties, the temperature between the positive pole mass flow post and the negative pole mass flow post of hugging closely is derived the heat fast, prolongs the life of battery.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic perspective view of a plurality of large capacity cells connected in series according to an embodiment;
FIG. 2 is a schematic top view based on FIG. 1;
FIG. 3 is a schematic structural diagram of a single battery according to an embodiment;
FIG. 4 is a schematic view of the heat pipe structure of the present invention;
FIG. 5 is a schematic view of the structure of the bar-shaped fixture of the present invention;
wherein:
1-a single cell; 2-positive current collecting column; 3-negative current collecting column; 4, forming a groove; 5, a through groove; 6, clamping a fixture; 7, a heat pipe; 71-horizontal section of heat pipe; 72-vertical section of heat pipe; 8-semiconductor refrigerating device.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It should be understood that directional terms such as "upper" and "lower" are used herein in accordance with the accompanying drawings for better understanding of the technical aspects of the present invention.
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1, the connection structure for connecting large-capacity single batteries in series provided by the present embodiment includes two battery packs; both battery packs include a single battery 1; a positive current collecting column 2 and a negative current collecting column 3 on the same side of the single battery 1; when two battery packs are connected in series, the positive pole current collecting column 2 on one battery pack is relatively clung to and clamped with the negative pole current collecting column 3 on the other battery pack.
Referring to fig. 1-2, each battery pack includes three unit batteries 1 having the same structure, and each unit battery 1 is a large capacity lithium battery having a rectangular parallelepiped structure.
Referring to fig. 3, a positive current collecting column 2 and a negative current collecting column 3 are respectively arranged on one side surface of a single battery 1, and the side surface is called as a close-contact surface; the axial direction of the positive current collecting column 2 is parallel to the axial direction of the negative current collecting column 3, and the positive current collecting column and the negative current collecting column are equal in length; the length of the positive current collecting column 2 and the length of the negative current collecting column 3 are both smaller than the height of the side face of the single battery 1, and the positive current collecting column 2 and the negative current collecting column 3 are both in a quadrangular structure.
Specifically, the positive current collecting post 2 and the negative current collecting post 3 are both directly arranged on the surface of the close attaching face, and at the moment, the positive current collecting post 2 and the negative current collecting post 3 are both completely exposed out of the side face of the single battery 1.
In another embodiment, the positive current collecting post 2 and the negative current collecting post 3 are both partially embedded in the surface of the close contact surface, and in this case, the positive current collecting post 2 and the negative current collecting post 3 are both partially exposed outside the side surface of the single battery 1. When the part is exposed, the part is subjected to insulation sealing treatment with the case of the unit cell 1.
In the embodiment, for two battery packs, three single batteries 1 are sequentially connected in each battery pack, a positive current collecting column 2 and a negative current collecting column 3 of each single battery 1 are positioned on the same side, and the positive current collecting columns 2 and the negative current collecting columns 3 on the three single batteries 1 are sequentially arranged at intervals; and between two group battery, anodal mass flow post 2 and the dislocation of negative pole mass flow post 3, the terminal surface between anodal mass flow post 2 and the negative pole mass flow post 3 is just right and hug closely mutually, then the adjacent surface of the relative close face all sets up coupling assembling, through coupling assembling with anodal mass flow post 2 and negative pole mass flow post 3 joint. The number of the connecting components is two; two coupling assembling set up respectively with hug closely relatively on a vertically two sides, establish ties two adjacent group batteries through coupling assembling to satisfy actual user demand, and guarantee a plurality of battery cell stable in structure who establishes ties and can not rock, thereby guarantee the stability and the security of battery cell series connection.
Example 2
Furthermore, in order to facilitate the convenience of clamping the positive current collecting column 2 and the negative current collecting column 3, the connection is more stable.
Referring to fig. 1-3, the connection assembly includes a groove 4 and a bar clamp 6.
In the implementation process, two grooves 4 are respectively arranged on the positive current collecting column 2 and the negative current collecting column 3; the groove 4 is positioned on the same side of the relative close contact surface between the positive current collecting column 2 and the negative current collecting column 3 and on the surface adjacent to the relative close contact surface. The groove 4, the positive current collecting column 2 and the negative current collecting column 4 are axially parallel, and the groove 4 is as long as the positive current collecting column 2.
Referring to fig. 5, the bar-shaped fixture 6 is a column structure with a U-shaped cross section, the end surface of the U-shaped opening is matched with the cross section of the groove 4, and the axial length of the bar-shaped fixture 6 is equal to the axial length of the groove 4.
During implementation, the two ends of the bar-shaped fixture 6 are correspondingly clamped in the groove 4 on the positive current collecting column and the groove 4 on the negative current collecting column respectively and are inserted into the grooves 4 from top to bottom, so that the purpose of connecting the negative current collecting column of the battery 1 with the positive current collecting column of the battery 2 is achieved, and the two battery packs are connected in series.
Preferably, the cross-section of this embodiment recess is right trapezoid, and the face at right trapezoid's parallel minor face is located on the side surface of anodal current collecting post 2 and on the side surface of negative pole current collecting post 3, and the face at long limit place is located the interior concave surface of anodal current collecting post 2 and the interior concave surface of negative pole current collecting post 3, and the big cross-sectional structure of this kind of little inside is convenient for bar fixture 6 chucking.
The other embodiment of the cross section of the groove 4 is that the cross section of the groove 4 is an isosceles trapezoid, and the surface where the long edge of the isosceles trapezoid is located is an inner concave surface of the groove 4, so that the clamping connection of the strip-shaped clamp is more stable.
Example 3
Referring to fig. 1 and 2, through grooves 5 are formed on the close contact surfaces of the positive current collecting post 2 and the negative current collecting post 3; and a containing cavity is formed between the through groove 5 on the positive current collecting post 2 and the through groove 5 of the negative current collecting post 3.
Specifically, the opening direction of the through groove 5 is parallel to the axial direction of the positive current collecting post 2 and the axial direction of the negative current collecting post 3.
In implementation, the through groove 5 is a U-shaped through groove; the number of the through grooves 5 on the positive current collecting post is equal to that of the through grooves 5 on the negative current collecting post, the through grooves are two, and the positions of the through grooves are corresponding to each other. At this time, when the positive current collecting post 2 and the negative current collecting post 3 are connected in series, the through grooves 5 on the positive current collecting post 2 and the negative current collecting post 3 form two square-shaped accommodating cavities.
Further, a heat pipe 7 is placed in the accommodating cavity, and one end of the heat pipe 7 is located outside the accommodating cavity and is placed on the upper surface of the single battery 1.
Referring to fig. 4, specifically, the heat pipe 7 is an L-shaped pipe composed of a heat pipe horizontal section 71 and a heat pipe vertical section 72; the heat pipe vertical section 72 is arranged in the accommodating cavity; the heat pipe horizontal section 71 is located outside the accommodating cavity and extends to the upper surface of the single battery 1. A semiconductor refrigerating device 8 is arranged on the upper surface of the single battery 1; the semiconductor refrigerating device 8 is communicated with the heat pipe horizontal section 71.
During implementation, the two square accommodating cavities are arranged, so that the number of the heat pipes 7 is two, the two heat pipes 7 are communicated with the semiconductor refrigerating device 8, the semiconductor refrigerating device 8 is the existing device, the semiconductor refrigerating pieces are arranged inside the semiconductor refrigerating device, the temperature of the tightly-attached positive current collecting column 2 and the temperature of the tightly-attached negative current collecting column 3 between the single batteries 1 which are connected in series can be adjusted, and the heat pipes 7 are isolated from the semiconductor refrigerating pieces on the semiconductor refrigerating device 8 through insulating heat conducting materials.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (16)
1. A connection structure for connecting high-capacity single batteries in series is characterized by comprising two battery packs; the two battery packs each comprise a single battery (1); the positive current collecting column (2) and the negative current collecting column (3) are arranged on the same side face of the single battery (1); when the two battery packs are connected in series, the positive pole current collecting column (2) on one battery pack is relatively clung to the negative pole current collecting column (3) on the other battery pack and is clamped through the strip-shaped clamp (6).
2. A connection structure of large capacity single batteries connected in series according to claim 1, wherein the positive current collecting column (2) and the negative current collecting column (3) are provided with grooves (4), and the grooves (4) are positioned on the same side of the relative close contact surface between the positive current collecting column (2) and the negative current collecting column (3) and on the surface adjacent to the relative close contact surface; the two ends of the bar-shaped fixture (6) are correspondingly clamped in the groove (4) on the positive current collecting column and the groove (4) on the negative current collecting column respectively, and are inserted into the grooves (4) from top to bottom.
3. The connection structure of a large-capacity unit cell in series as claimed in claim 2, wherein the grooves (4), the positive current collecting columns (2) and the negative current collecting columns (3) are axially parallel, and the grooves (4) are as long as the positive current collecting columns (2).
4. A connection structure for connecting large-capacity single batteries in series according to claim 3, wherein the cross section of the groove (4) is a right trapezoid or an isosceles trapezoid, and the surface of the long side of the trapezoid is the inner concave surface of the groove (4).
5. The connection structure for connecting large-capacity unit batteries in series according to claim 4, wherein the bar-shaped jig (6) has a U-shaped cross section; the end surface of the U-shaped opening is matched with the cross section of the groove (4).
6. The connection structure of a large-capacity single battery in series connection according to any one of claims 1 to 5, wherein the close contact surfaces of the positive current collecting column (2) and the negative current collecting column (3) are provided with through grooves (5); and a containing cavity is formed between the through groove (5) on the positive current collecting column (2) and the through groove (5) of the negative current collecting column (3).
7. A connection structure of large capacity battery cells in series as set forth in claim 6, wherein said through groove (5) is a U-shaped through groove.
8. The connection structure of large capacity battery cells in series as claimed in claim 7, wherein the through grooves (5) are one or more; the number of the through grooves (5) on the positive current collecting column is equal to that of the through grooves (5) on the negative current collecting column, and the positions of the through grooves correspond to those of the through grooves.
9. The connection structure of a large capacity battery cell in series as set forth in claim 8, wherein the connection structure of a large capacity battery cell in series further comprises a heat pipe (7) disposed in the receiving chamber.
10. The connection structure of large capacity unit batteries in series as claimed in claim 9, wherein one end of the heat pipe (7) is located outside the receiving chamber and is placed on the upper surface of the unit batteries (1).
11. The connection structure of large capacity battery cells in series as claimed in claim 10, wherein the heat pipe (7) is an L-shaped pipe composed of a heat pipe horizontal section (71) and a heat pipe vertical section (72); the heat pipe vertical section (72) is arranged in the accommodating cavity; the horizontal section (71) of the heat pipe is positioned outside the accommodating cavity and extends to the upper surface of the single battery (1).
12. A large capacity battery cell series connection structure as set forth in claim 11, wherein said large capacity battery cell series connection structure further comprises a semiconductor cooling device (8) disposed on the upper surface of the battery cell (1); the semiconductor refrigerating device (8) is communicated with the heat pipe horizontal section (71).
13. The connection structure of large capacity battery cells in series as claimed in claim 12, wherein the number of battery cells (1) in the battery pack is one or more.
14. The connection structure for connecting a large-capacity single battery in series according to claim 13, wherein when the number of the single batteries (1) is multiple, the multiple single batteries (1) are connected in sequence in a single battery pack, and the positive current collecting column (2) and the negative current collecting column (3) are both positioned on the same side of the single batteries (1); between the two battery packs, the positive current collecting column (2) and the negative current collecting column (3) are staggered.
15. The connection structure of large-capacity unit cells in series as claimed in claim 14, wherein the positive current collecting column (2) and the negative current collecting column (3) are partially or entirely exposed outside the side surfaces of the unit cells (1).
16. The connection structure of large-capacity unit cells in series as claimed in claim 14, wherein the length of the positive collector column (2) and the length of the negative collector column (3) are smaller than the length of the unit cells (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122630241.2U CN217114688U (en) | 2021-10-29 | 2021-10-29 | Connection structure for series connection of high-capacity single batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122630241.2U CN217114688U (en) | 2021-10-29 | 2021-10-29 | Connection structure for series connection of high-capacity single batteries |
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| Publication Number | Publication Date |
|---|---|
| CN217114688U true CN217114688U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122630241.2U Active CN217114688U (en) | 2021-10-29 | 2021-10-29 | Connection structure for series connection of high-capacity single batteries |
Country Status (1)
| Country | Link |
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| CN (1) | CN217114688U (en) |
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2021
- 2021-10-29 CN CN202122630241.2U patent/CN217114688U/en active Active
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