CN216818556U - Soft packet of lithium cell series-parallel structure - Google Patents
Soft packet of lithium cell series-parallel structure Download PDFInfo
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- CN216818556U CN216818556U CN202123393229.0U CN202123393229U CN216818556U CN 216818556 U CN216818556 U CN 216818556U CN 202123393229 U CN202123393229 U CN 202123393229U CN 216818556 U CN216818556 U CN 216818556U
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- bottom plate
- mounting seat
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Abstract
The scheme discloses a soft-package lithium battery series-parallel structure in the technical field of battery manufacturing, which comprises a bottom plate, wherein a plurality of groups of tab connecting parts are arranged on the bottom plate, each tab connecting part comprises two electrode through holes which are formed in the bottom plate and used for tabs to pass through, an installation seat connected with the bottom plate is arranged between the two electrode through holes, and the upper surface of the installation seat is detachably connected with a pressing plate; wherein, the two groups of pole ear connection parts are respectively a total positive group and a total negative group, and the other connection parts are connected with the pressure plate through the conducting strips. Utmost point ear is buckled the back and is adopted the clamp plate to compress tightly to fix on the mount pad after passing from the electrode through-hole to the direction of mount pad, simple to operate, and the reliability improves, can keep the uniformity of each utmost point ear installation like this, can dismantle alone so that maintain to every utmost point ear of a group, do not harm utmost point ear, be convenient for change electric core, need not use a large amount of soldering tin, also do not have high temperature to damage electric core problem.
Description
Technical Field
The utility model belongs to the technical field of battery manufacturing, and particularly relates to a series-parallel structure of a soft package lithium battery.
Background
The soft package lithium battery has the advantages of high specific energy, good safety and the like, and is gradually used in more and more fields. However, the soft package lithium battery has high requirements on grouping design due to poor structural strength, and requires a grouping rear structure to support, fix and protect the battery cell. The soft package lithium battery has various series-parallel connection methods and is not mature enough.
The soft-package battery series-parallel connection mode on the market at present generally uses: firstly, putting a positive electrode and a negative electrode together, punching a tab, clamping the tab by two hard plates, and fixing the tab by bolts and nuts; secondly, directly welding the anode and the cathode by ultrasonic waves; and thirdly, customizing a PCB, wherein an opening is formed in the middle of the PCB, and the lug passes through the opening and is welded by using a soldering iron.
The two modes have the problems of inconvenient disassembly and assembly and maintenance, and the first mode has the defects of excessive quantity, instability and poor reliability of connecting screws and nuts; the torsion of the screws is inconsistent in the assembly process of the battery pack; the use of materials also adds to the cost due to the production inefficiencies of excessive quantities. In the second mode, when a plurality of batteries are connected in series and parallel, the lengths of the lugs need to be increased, so that the lengths of the lugs of the batteries are inconsistent, the voltages of the batteries are inconsistent during heavy current discharge, multilayer welding is unstable, cold welding is easy to form, and the number of the batteries which can be connected in series and parallel is limited; meanwhile, the second mode has the problem of using a large amount of tin welding wires, if the temperature of the soldering iron is too high in the welding process, the seal of the battery is easy to damage, and the battery leaks gas and expands after being used for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a soft package lithium battery series-parallel connection structure to solve the problems of poor stability and reliability, and inconvenience in disassembly, assembly and maintenance of a soft package battery series-parallel connection mode in the prior art.
The soft-package lithium battery series-parallel structure comprises a bottom plate, wherein a plurality of groups of tab connecting parts are arranged on the bottom plate, each tab connecting part comprises two electrode through holes which are formed in the bottom plate and used for tabs to pass through, an installation seat connected with the bottom plate is arranged between the two electrode through holes, and a pressing plate is detachably connected to the upper surface of the installation seat; the two groups of the lug connection parts are respectively a total positive group and a total negative group, and the other connection parts are connected with the pressing plate through the conducting plates; the bottom plate and the mounting seat are made of insulating plates, and the pressing plate is made of conductive plates.
The working principle and the beneficial technical effects of the scheme are as follows: the utility model provides a series-parallel connection structure of a soft-package lithium battery, wherein two electrode through holes in a lug connection part of each group respectively penetrate through a positive electrode lug and a negative electrode lug, the lugs are bent towards the direction of a mounting seat and then are tightly pressed and fixed on the mounting seat by adopting a pressing plate, the mounting is convenient, the reliability is improved, the mounting consistency of each group of lugs can be kept, each group of lugs can be independently dismounted for maintenance, the lugs are not damaged, the battery cell is convenient to replace, a large amount of soldering tin is not needed, and the problem of high-temperature damage to the battery cell is avoided.
The hole positions and the number of the electrode through holes on the bottom plate can be changed according to actual needs, so that the modification is convenient.
Furthermore, threaded holes are formed in the mounting seat and the pressing plate, and the mounting seat and the pressing plate are connected through bolts. The bolt connection mode is firm and convenient to detach.
Furthermore, a threaded hole in the mounting seat is internally provided with a steel wire thread sleeve. Because the mount pad all adopts insulating board to make, the screw hole on it is probably worn and torn to many times dismouting, so set up the life that the mount pad can be promoted to the wire thread insert.
Furthermore, an insulating partition plate is arranged between the adjacent tab connecting parts and connected to the bottom plate. The insulating partition plate plays a role of insulating isolation.
Furthermore, a lightening hole is formed in the mounting seat.
Drawings
FIG. 1 is a schematic structural diagram of a soft-package lithium battery series-parallel structure according to the present invention;
FIG. 2 is a top view of a soft-packed lithium battery series-parallel structure of the present invention with the press plate removed;
fig. 3 is a schematic structural diagram of a soft-package lithium battery series-parallel structure without a pressing plate according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a bottom plate 1, bolts 2, a pressing plate 3, a conducting plate 4, a lug 5, a mounting seat 6, lightening holes 7, a steel wire thread sleeve 8, an electrode through hole 9 and an insulating partition plate 10.
The embodiment is basically as shown in the attached figures 1, 2 and 3: the utility model provides a soft packet of lithium cell cluster parallel structure, comprising a base plate 1, be equipped with multiunit utmost point ear connecting portion on the bottom plate 1, utmost point ear connecting portion include two set up be used for on the bottom plate 1 supply utmost point ear 5 to pass electrode through hole 9, be equipped with mount pad 6 of being connected with bottom plate 1 between two electrode through hole 9, the upper surface of mount pad 6 is equipped with clamp plate 3, all seted up three screw hole on mount pad 6 and the clamp plate 3, adopt bolt 2 to fix clamp plate 3 on mount pad 6 in the screw hole, threaded hole on the mount pad 6 is equipped with steel wire swivel nut 8, install and still seted up lightening hole 7 last.
The two groups of lug connecting parts are respectively a total positive group and a total negative group, and the other connecting parts are connected with the pressing plate 3 through the conducting plates 4; the bottom plate 1 and the mounting seat 6 are made of insulating plates, and the pressing plate 3 and the conducting strip 4 are made of copper sheets.
An insulating separator 10 is arranged between the adjacent tab connecting parts, and the insulating separator 10 is connected to the bottom plate 1.
The specific implementation process is as follows: two electrode through holes 9 in the utmost point ear connecting portion pass anodal utmost point ear 5 and the utmost point ear 5 of negative pole respectively, utmost point ear 5 adopts clamp plate 3 to compress tightly to fix on mount pad 6 after buckling to the direction of mount pad 6, simple to operate, and the reliability improves, can keep the uniformity of each utmost point ear 5 installation of organizing like this, can dismantle alone so that maintain to each utmost point ear 5 of organizing, do not harm utmost point ear 5, be convenient for change electric core, need not use a large amount of soldering tin, do not have high temperature to damage electric core problem yet.
Claims (5)
1. The utility model provides a soft packet of lithium cell series-parallel structure which characterized in that: the novel electrode plate comprises a bottom plate, wherein a plurality of groups of tab connecting parts are arranged on the bottom plate, each tab connecting part comprises two electrode through holes which are formed in the bottom plate and used for tabs to pass through, a mounting seat connected with the bottom plate is arranged between the two electrode through holes, and the upper surface of the mounting seat is detachably connected with a pressing plate; the two groups of lug connecting parts are respectively a total positive group and a total negative group, and the other connecting parts are connected with the pressing plate through the conducting strips; the bottom plate and the mounting seat are made of insulating plates, and the pressing plate is made of conductive plates.
2. The soft-package lithium battery series-parallel structure of claim 1, characterized in that: threaded holes are formed in the mounting seat and the pressing plate, and the mounting seat and the pressing plate are connected through bolts.
3. The soft package lithium battery series-parallel connection structure of claim 2, characterized in that: and a steel wire thread insert is arranged in the threaded hole on the mounting seat.
4. The soft-package lithium battery series-parallel structure of claim 3, characterized in that: an insulating separator is arranged between the adjacent tab connecting parts and connected to the bottom plate.
5. The soft-package lithium battery series-parallel structure of claim 4, characterized in that: the mounting seat is provided with a lightening hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123393229.0U CN216818556U (en) | 2021-12-30 | 2021-12-30 | Soft packet of lithium cell series-parallel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123393229.0U CN216818556U (en) | 2021-12-30 | 2021-12-30 | Soft packet of lithium cell series-parallel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216818556U true CN216818556U (en) | 2022-06-24 |
Family
ID=82062000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123393229.0U Active CN216818556U (en) | 2021-12-30 | 2021-12-30 | Soft packet of lithium cell series-parallel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216818556U (en) |
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2021
- 2021-12-30 CN CN202123393229.0U patent/CN216818556U/en active Active
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