CN214254669U - Welding-free soft package battery module - Google Patents
Welding-free soft package battery module Download PDFInfo
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- CN214254669U CN214254669U CN202023314984.0U CN202023314984U CN214254669U CN 214254669 U CN214254669 U CN 214254669U CN 202023314984 U CN202023314984 U CN 202023314984U CN 214254669 U CN214254669 U CN 214254669U
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- circuit board
- package battery
- soft package
- printed circuit
- tab
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides an exempt from to weld laminate polymer battery module, include: the flexible packaging battery comprises a printed circuit board, two aluminum bar units positioned on the front side of the printed circuit board and a plurality of flexible packaging battery cells positioned on the back side of the printed circuit board; the printed circuit board is provided with a plurality of through grooves for the lugs of the soft-package battery cell to pass through; each aluminum row unit is internally provided with a plurality of aluminum rows which are arranged in parallel at intervals, the aluminum rows in the two aluminum row units are arranged in a staggered manner, and each aluminum row is positioned between two transversely adjacent through grooves; the positive electrode lug and the negative electrode lug of the soft package battery cell are respectively extended out of the two longitudinally adjacent through grooves, and the extended parts of the positive electrode lug and the negative electrode lug are pressed and fixed by the aluminum row. The utility model discloses need not to realize the series-parallel connection of soft-packaged electrical core through the mode that welding utmost point ear is right, reduced the processing degree of difficulty and be convenient for later maintenance.
Description
Technical Field
The utility model relates to a battery manufacturing technology field especially relates to an exempt from to weld laminate polymer battery module.
Background
The soft package battery pack has the advantages of good safety performance, high energy density and the like, and is widely applied to the development of the power battery industry.
At present, the assembly method of the soft package battery pack of the electric bicycle generally welds the tabs of a plurality of soft package battery cells together in a tin soldering mode to realize the serial connection and the parallel connection of the soft package battery cells; and then welding a battery sampling line on the lug to monitor, protect and manage the soft package battery core.
The pouch battery pack assembled by the above method has the following disadvantages:
(1) the temperature of an electric soldering iron and the welding retention time are not well controlled in the soldering process, the soldering iron temperature can be conducted into the soft package battery cell through the lug after the welding time is long, a diaphragm and a pole piece in the soft package battery cell can be damaged, the safety and the service life of the soft package battery pack are influenced, and the soldering efficiency is low;
(2) if the positions of the positive and negative lugs of the soft package battery cell are misplaced before soldering, the welded soft package battery cell is difficult to disassemble after soldering the lugs, so that the rejection rate is high once the welded soft package battery cell is almost impossible to disassemble, and meanwhile, the soft package battery cell is troublesome to replace in the later maintenance process;
(3) the battery sampling lines are welded on the lugs, so that time and labor are wasted, and the battery sampling lines are easy to wind and short-circuit when more.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a welding-free laminate polymer battery module to solve the deficiencies existing in the prior art.
Based on the above-mentioned purpose, the utility model provides an exempt from to weld laminate polymer battery module, include:
the flexible packaging battery comprises a printed circuit board, two aluminum bar units positioned on the front side of the printed circuit board and a plurality of flexible packaging battery cells positioned on the back side of the printed circuit board;
the printed circuit board is provided with a plurality of through grooves for the lugs of the soft-package battery cell to pass through;
each aluminum row unit is internally provided with a plurality of aluminum rows which are arranged in parallel at intervals, the aluminum rows in the two aluminum row units are arranged in a staggered manner, and each aluminum row is positioned between two transversely adjacent through grooves;
the positive electrode lug and the negative electrode lug of the soft package battery cell are respectively extended out of the two longitudinally adjacent through grooves, and the extended parts of the positive electrode lug and the negative electrode lug are pressed and fixed by the aluminum row.
Furthermore, the number of the through grooves is the same as the total number of the positive electrode tabs and the negative electrode tabs, and the positions of the through grooves correspond to the positions of the electrode tabs one to one.
Furthermore, the printed circuit board is provided with a plurality of circuit board through holes, a plurality of nuts are soldered on the back surface of the printed circuit board, and the nut holes of the nuts are the same as the circuit board through holes in number and are aligned in position.
Further, each all be provided with 2 utmost point ear through-holes on the utmost point ear of laminate polymer core, each utmost point ear is followed printed circuit board's reverse side passes corresponding logical groove and buckles 90 degrees, utmost point ear through-hole with the circuit board through-hole aligns.
Furthermore, each aluminum row is located above the tab bent by 90 degrees and is provided with 2 aluminum row through holes, and the aluminum row through holes are aligned with the tab through holes.
Further, exempt from to weld laminate polymer battery module still includes: the fastening bolts are matched with the nuts and sequentially penetrate through the aluminum row through holes, the lug through holes, the circuit board through holes and the nut holes to tightly press the aluminum row, the lugs and the printed circuit board.
Furthermore, a sampling terminal and a battery sampling line are arranged on the front face of the printed circuit board, one end of the battery sampling line is connected with the sampling terminal, and the other end of the battery sampling line is connected with the aluminum row.
Furthermore, the plurality of soft package battery cores are stacked in a series connection mode or a parallel connection mode or a series-parallel connection combination mode.
Further, the anodal ear of soft-packaged electrical core and the negative pole ear of adjacent soft-packaged electrical core pass and correspond logical groove 90 degrees of buckling relatively, the aluminium row place in the top that anodal ear and negative pole ear overlapped, fastening bolt passes in proper order through-hole, utmost point ear through-hole, circuit board through-hole, nut hole are arranged to the aluminium, will aluminium row, anodal ear and negative pole ear, printed circuit board compress tightly, realize establishing ties between the soft-packaged electrical core.
Further, the same utmost point ear of polarity of soft-packaged electrical core and adjacent soft-packaged electrical core passes and corresponds logical groove 90 degrees of buckling relatively, the aluminium row place in the top that the same utmost point ear of polarity overlaps, fastening bolt passes in proper order aluminium row through-hole, utmost point ear through-hole, circuit board through-hole, nut hole will aluminium row, the same utmost point ear of polarity, printed circuit board compress tightly, realize parallelly connected between the soft-packaged electrical core.
From the above, can see out, the utility model provides a exempt from to weld laminate polymer battery module, laminate polymer battery core can assemble with printed circuit board according to the series-parallel connection requirement, recycles the aluminium row and carries out the crimping with the detachable connecting piece to utmost point ear for need not to weld two utmost point ears, can avoid because of the negative effects that utmost point ear welding brought, reduced the processing degree of difficulty and improved the security performance, realize laminate polymer battery core's series-parallel connection requirement easily, the later maintenance of still being convenient for.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a soft-package battery cell provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a printed circuit board according to an embodiment of the present invention;
fig. 3 is a front view of a printed circuit board according to an embodiment of the present invention;
fig. 4 is a reverse side view of a printed circuit board according to an embodiment of the present invention;
fig. 5 is the embodiment of the utility model provides a exempt from to weld laminate polymer battery module's structural schematic.
In the figure: 1. soft-packaged battery cells; 11. a tab; 111. a tab through hole; 2. a printed circuit board; 21. a circuit board through hole; 22. a through groove; 23. a nut; 231. a nut hole; 24. a sampling terminal; 3. aluminum bars; 4. and fastening the bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Referring to fig. 5, an embodiment of the present disclosure provides a welding-free pouch battery module, including:
the flexible packaging battery comprises a Printed Circuit Board (PCB)2, two aluminum row units positioned on the front side of the PCB 2, a plurality of flexible packaging battery cores 1 positioned on the back side 2 of the PCB, and a plurality of fastening bolts 4 positioned above the aluminum row units; each aluminum row unit is internally provided with a plurality of aluminum rows 3 which are arranged in parallel at intervals, and the aluminum rows 3 in the two aluminum row units are arranged in a staggered manner;
referring to fig. 1, a schematic structural diagram of a flexible package battery cell 1 is shown, two tabs 11 are arranged above each flexible package battery cell 1, and are respectively a positive tab and a negative tab (not distinguished in fig. 1), and tab through holes 111 with the same number and position are arranged on each positive tab and each negative tab;
referring to fig. 2, 3 and 4, which are schematic structural diagrams of a printed circuit board 2, a plurality of circuit board through holes 21 and through slots 22 through which the tabs 11 pass are formed in the printed circuit board 2, after the tabs 11 pass through two longitudinally adjacent through slots 22 from the reverse side of the printed circuit board 2 and are bent by 90 degrees, tab through holes 111 in the tabs 11 are aligned with the circuit board through holes 21, a plurality of nuts 23 are fixedly arranged on the reverse side of the printed circuit board 2, the number of the nuts 23 is the same as the number of the circuit board through holes 21, and the nut holes 231 are aligned with the circuit board through holes 21;
each aluminum row 3 is located between two adjacent horizontal through grooves 22, each aluminum row 3 is provided with aluminum row through holes with the same number as that of tab through holes 111 on each tab 11, the total number of the aluminum row through holes of the two aluminum row units is the same as that of the circuit board through holes 21, the aluminum row 3 is placed above the tab 11 bent by 90 degrees, and the aluminum row through holes are aligned with the tab through holes 111 and the circuit board through holes 21;
the fastening bolts 4 can be matched with the nuts 23 for use, and the fastening bolts 4 sequentially penetrate through the aluminum row through holes, the lug through holes 111, the circuit board through holes 21 and the nut holes 231 to tightly press the aluminum row 3, the lugs 11 and the printed circuit board 2.
Further, the diameters of the aluminum row through hole, the tab through hole 111 and the circuit board through hole 21 are slightly larger than the nominal diameter of the fastening bolt 4, so that the fastening bolt 4 can pass through the aluminum row through hole, the tab through hole 111 and the circuit board through hole 21 and then is screwed with the nut 23, and the aluminum row 3, the tab 11 and the printed circuit board 2 are tightly pressed, so that the circuit conduction of the soft package battery core 1 is realized.
Further preferably, the through slots 22 are vertical strip-shaped holes, the number of the through slots 22 is equal to the total number of the positive electrode tabs and the negative electrode tabs, and the positions of the through slots 22 correspond to the positions of the electrode tabs 11 one by one. Of course, the length and width of the through slot 22 should be slightly larger than those of the tab 11, so that the tab 11 can pass through the through slot 22, and thus the several soft package cells 1 can be assembled with the printed circuit board 2. After the plurality of soft package battery cells 1 and the printed circuit board 2 are assembled together, the plurality of soft package battery cells 1 are further fixed (for example, the peripheries of the plurality of soft package battery cells 1 are further wound and fixed by using an adhesive tape). The number of the soft package battery cells 1 is determined according to actual requirements.
As an alternative embodiment, the number of the tab through holes 111 in each of the tabs 11 is 2. Here, the number 111 of tab through holes in each of the tabs 11 is set to 2, and 2 is merely a preferable value, but may be set to other values.
As an alternative embodiment, the plurality of nuts 231 are soldered to the opposite side of the printed circuit board 2.
As an optional embodiment, the front surface of the printed circuit board 2 is provided with a sampling terminal 24 and a battery sampling line, one end of the battery sampling line is connected to the sampling terminal 24, and the other end of the battery sampling line is connected to the aluminum row 3, so as to realize circuit communication with the series-parallel connection soft package battery core 1. The battery management system (BSM) can acquire information such as voltage of the soft package battery cell 1 connected in series and parallel through the sampling terminal 24, so that dynamic monitoring of the soft package battery module is realized.
Because prior art generally is to weld the battery sampling line on utmost point ear 11, this process is both time-consuming and hard, so can arrange the battery sampling line and realize the circuit UNICOM on printed circuit board 2, do so and not only beautifully but also saved welded process, also make things convenient for the change of soft packet of electricity core 1 in later stage.
As an optional embodiment, the plurality of flexible package cells 1 are stacked in series or in parallel or in a combination of series and parallel.
As an optional embodiment, the positive tab of the soft-package battery cell 1 and the negative tab of the adjacent soft-package battery cell 1 pass through the corresponding through slots 22 and bend by 90 degrees relatively, the aluminum row 3 is placed above the overlapping of the positive tab and the negative tab (the length and the width of the aluminum row 3 should be slightly larger than the length and the width of the overlapping portion of the positive tab and the negative tab, so that the aluminum row 3 can compress the tabs better), the fastening bolt 4 sequentially passes through the aluminum row through hole, the tab through hole 111, the circuit board through hole 21 and the nut hole 24, and the aluminum row 3, the positive tab, the negative tab and the printed circuit board 2 are compressed tightly, so as to realize the series connection between the soft-package battery cells 1.
As an optional embodiment, the tabs 111 with the same polarity of the soft package battery cell 1 and the adjacent soft package battery cells 1 pass through the corresponding through grooves and are bent by 90 degrees, the aluminum row 3 is placed above the tabs 111 with the same polarity, and the fastening bolt 4 sequentially passes through the aluminum row through hole, the tab through hole 111, the circuit board through hole 21 and the nut hole 24, so as to compress the aluminum row 3, the tabs 11 with the same polarity and the printed circuit board 2, thereby realizing the parallel connection between the soft package battery cells 1.
It can be seen that, the utility model provides a exempt from to weld laminate polymer battery module, laminate polymer battery core can be assembled according to the series-parallel requirement with printed circuit board, recycles the aluminium row and carries out the crimping with the detachable connecting piece to utmost point ear for need not to weld two utmost point ears, can avoid because of the negative effects that utmost point ear welding brought, reduced the processing degree of difficulty and improved the security performance, realize the series-parallel requirement of laminate polymer battery core easily, the later maintenance of still being convenient for. In addition, the battery sampling line is arranged on the printed circuit board, so that the appearance is attractive, the process of welding the battery sampling line on the lug is omitted, and the replacement of a soft package battery core in the later period is facilitated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a exempt from to weld laminate polymer battery module which characterized in that includes: the flexible packaging battery comprises a printed circuit board, two aluminum bar units positioned on the front side of the printed circuit board and a plurality of flexible packaging battery cells positioned on the back side of the printed circuit board;
the printed circuit board is provided with a plurality of through grooves for the lugs of the soft-package battery cell to pass through;
each aluminum row unit is internally provided with a plurality of aluminum rows which are arranged in parallel at intervals, the aluminum rows in the two aluminum row units are arranged in a staggered manner, and each aluminum row is positioned between two transversely adjacent through grooves;
the positive electrode lug and the negative electrode lug of the soft package battery cell are respectively extended out of the two longitudinally adjacent through grooves, and the extended parts of the positive electrode lug and the negative electrode lug are pressed and fixed by the aluminum row.
2. The welding-free soft package battery module as claimed in claim 1, wherein the number of the through grooves is the same as the total number of the positive electrode tabs and the negative electrode tabs, and the positions of the through grooves correspond to the positions of the electrode tabs one by one.
3. The welding-free soft package battery module as claimed in claim 2, wherein the printed circuit board is provided with a plurality of circuit board through holes and a plurality of nuts are soldered to the back surface of the printed circuit board, and the nut holes of the nuts are the same as the circuit board through holes in number and are aligned in position.
4. The welding-free soft package battery module as claimed in claim 3, wherein each tab of the soft package battery core is provided with 2 tab through holes, each tab passes through the corresponding through slot from the reverse side of the printed circuit board and is bent by 90 degrees, and the tab through holes are aligned with the circuit board through holes.
5. The welding-free soft package battery module as recited in claim 4, wherein each aluminum row is located above the 90-degree bent tab, and each aluminum row is provided with 2 aluminum row through holes, and the aluminum row through holes are aligned with the tab through holes.
6. The welding-free soft package battery module of claim 5, further comprising: the fastening bolts are matched with the nuts and sequentially penetrate through the aluminum row through holes, the lug through holes, the circuit board through holes and the nut holes to tightly press the aluminum row, the lugs and the printed circuit board.
7. The welding-free soft package battery module as claimed in claim 1, wherein a sampling terminal and a battery sampling line are arranged on the front surface of the printed circuit board, one end of the battery sampling line is connected with the sampling terminal, and the other end of the battery sampling line is connected with the aluminum row.
8. The welding-free soft package battery module as claimed in claim 1, wherein the plurality of soft package battery cells are stacked in series or in parallel or in combination of series and parallel.
9. The welding-free soft package battery module as claimed in claim 6, wherein the positive tab of the soft package battery cell and the negative tab of the adjacent soft package battery cell pass through the corresponding through slots and are bent by 90 degrees relatively, the aluminum row is placed above the overlapping of the positive tab and the negative tab, and the fastening bolt passes through the aluminum row through hole, the tab through hole, the circuit board through hole and the nut hole in sequence, so that the aluminum row, the positive tab, the negative tab and the printed circuit board are pressed tightly to realize the series connection between the soft package battery cells.
10. The welding-free soft package battery module as claimed in claim 6, wherein the same-polarity tabs of the soft package battery cell and the adjacent soft package battery cell pass through the corresponding through grooves and are bent by 90 degrees relatively, the aluminum row is placed above the overlapping tabs with the same polarity, and the fastening bolt sequentially passes through the aluminum row through hole, the tab through hole, the circuit board through hole and the nut hole, and compresses the aluminum row, the same-polarity tabs and the printed circuit board to realize parallel connection between the soft package battery cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023314984.0U CN214254669U (en) | 2020-12-31 | 2020-12-31 | Welding-free soft package battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023314984.0U CN214254669U (en) | 2020-12-31 | 2020-12-31 | Welding-free soft package battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214254669U true CN214254669U (en) | 2021-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023314984.0U Active CN214254669U (en) | 2020-12-31 | 2020-12-31 | Welding-free soft package battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214254669U (en) |
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2020
- 2020-12-31 CN CN202023314984.0U patent/CN214254669U/en active Active
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