CN210607427U - Novel power module - Google Patents
Novel power module Download PDFInfo
- Publication number
- CN210607427U CN210607427U CN201921541652.0U CN201921541652U CN210607427U CN 210607427 U CN210607427 U CN 210607427U CN 201921541652 U CN201921541652 U CN 201921541652U CN 210607427 U CN210607427 U CN 210607427U
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- China
- Prior art keywords
- plated steel
- steel strip
- fixed
- layer nickel
- nickel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 150
- 239000010959 steel Substances 0.000 claims abstract description 150
- 238000003466 welding Methods 0.000 claims abstract description 76
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 37
- 238000005476 soldering Methods 0.000 claims abstract description 28
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims description 59
- 239000002356 single layer Substances 0.000 claims description 43
- 238000003491 array Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 64
- 229910052759 nickel Inorganic materials 0.000 description 32
- 238000007747 plating Methods 0.000 description 32
- 230000005611 electricity Effects 0.000 description 9
- 239000002253 acid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a novel power module, which belongs to the technical field of lithium batteries, and is characterized in that a double-layer nickel-plated steel strip is adopted at a terminal cell column, so that the resistance of the double-layer nickel-plated steel strip is reduced by half, the current confluence is more uniform, the cell consistency can be better maintained, and the bottom layer nickel-plated steel strip and the top layer nickel-plated steel strip can be respectively fixed with a lithium battery and a module positive and negative electrode line by adopting different processes, then the bottom layer nickel-plated steel strip and the top layer nickel-plated steel strip are mutually fixed by adopting a spot welding mode, the difficulty of the battery module assembly process is reduced by process decomposition, the production work efficiency is improved, and a connecting wire head of a circuit board is fixed with the sheet nickel-plated steel strip in advance by adopting soldering tin or laser welding, and then the sheet nickel-plated steel strip is fixed on the upper surface of, further prolonging the service life of the battery.
Description
Technical Field
The utility model relates to a lithium cell technical field especially relates to a novel power module.
Background
At present, common electric vehicles (such as two-wheeled electric vehicles, three-wheeled electric vehicles and partial four-wheeled electric vehicles) mostly adopt a lead-acid battery system to store electric energy to drive the vehicles to run, wherein 90% of two-wheeled electric vehicles and three-wheeled electric vehicles use lead-acid batteries, and the rest 10% use lithium batteries.
The lead-acid battery is mainly formed by mixing and soaking a lead plate and dilute sulfuric acid in a sealed plastic shell according to a certain proportion. Lead-acid batteries are an old battery technology and have the disadvantages of low energy density (low vehicle endurance), poor discharge capacity (poor vehicle driving performance), electrolyte leakage, flammable hydrogen evolution, heaviness, poor low-temperature performance, short service life (usually, the electricity storage capacity is halved after 1-2 years of application), long charging time and serious environmental pollution caused by heavy metal lead. The lead-acid battery pack system does not need to detect and control the working state of the battery (a power management system BMS), and the battery pack system which can be used by the electric vehicle can be formed only by simply connecting a specific number of lead-acid batteries in series, so that the working state and even the safety state can not be known and controlled, and the future intelligent networking requirement can not be supported.
The power lithium battery for the electric vehicle, which is produced by the existing lithium battery manufacturers, is an integral body designed and configured according to the calibration voltage of the whole electric vehicle, namely, an integral lithium battery system which has the same rated working voltage and the same calibration voltage of a certain electric vehicle and cannot be divided. The integral lithium battery system cannot be used for other electric vehicles with different nominal voltages because of fixed rated voltage, so that the current situation is that a consumer purchases a new electric vehicle, and if the voltage and capacity specifications are changed, the consumer cannot utilize the old lithium battery and must purchase the new electric vehicle, thereby causing waste.
In addition, when the lead of the existing lithium battery is connected with each row of battery cells, the process is to connect a lead head and the battery cells or a nickel-plated steel strip of the battery cells in parallel in a tin welding or laser welding mode. The disadvantages are that: the parallel conductors of the first battery cell and the last battery cell of the battery module are not specially designed for reducing resistance; the direct fixation of the lead heads by soldering tin and laser welding may cause overheating of the battery cell and influence the consistency of the battery cell, thus causing poor service life of the whole battery; and the assembly work can not be decomposed, the production difficulty is improved, and the production efficiency is reduced.
Disclosure of Invention
The utility model provides a novel power module is through arranging the department at first electric core and last electric core and adopting double-deck nickel plating steel band, improves the electric current distribution homogeneity, does benefit to and keeps electric core uniformity, extension battery life to decompose through the process and reduce the equipment technology degree of difficulty, promote production work efficiency.
The utility model provides a specific technical scheme as follows:
the utility model provides a novel power supply module which comprises a shell, a cell array which is fixed inside the shell and consists of lithium battery cells connected in parallel, a double-layer nickel-plated steel strip and a single-layer nickel-plated steel strip which are fixed on the cell array by spot welding, a single-layer nickel-plated steel strip which is used for realizing the mutual series connection between the cell arrays, a circuit board connecting head which is electrically connected with a power management circuit board, and a sheet nickel-plated steel strip which is fixed between the circuit board connecting heads by soldering tin or laser welding, wherein the double-layer nickel-plated steel strip comprises a bottom layer nickel-plated steel strip and a top layer nickel-plated steel strip which are fixed by spot welding, wherein the bottom layer nickel-plated steel strip is electrically connected and fixed with the battery cell array in a spot welding way, the top layer nickel-plated steel strip is fixed with the main negative and positive lines in a soldering or laser welding way, and the sheet nickel-plated steel strip is fixed on the upper surface of the top layer nickel-plated steel strip or the single layer nickel-plated steel strip in a spot welding mode.
Optionally, the double-layer nickel-plated steel strip fixed on the first cell array by spot welding and the positive line of the lithium battery power supply module are fixed by soldering tin or laser welding, the double-layer nickel-plated steel strip fixed on the last cell array by spot welding and the negative line of the lithium battery power supply module are fixed by soldering tin or laser welding, the single-layer nickel-plated steel strip fixed on the second cell array by spot welding and the single-layer nickel-plated steel strip fixed on the third cell array by spot welding are connected in series, the single-layer nickel-plated steel strip fixed on the fourth cell array by spot welding and the single-layer nickel-plated steel strip fixed on the fifth cell array by spot welding are connected in series, and the top layer nickel-plated steel strip and the sheet nickel-plated steel strip are fixed in a spot welding manner, and one of the two single-layer nickel-plated steel strips which are mutually connected in series is fixed in the sheet nickel-plated steel strip in a spot welding manner.
Optionally, the lower surface of the bottom layer nickel-plated steel strip and the lithium battery cell are fixed through spot welding, and the lower surface of the bottom layer nickel-plated steel strip and the upper surface of the single-layer nickel-plated steel sheet are fixed through spot welding.
Optionally, a plurality of lithium battery electric cores are connected in parallel to form an electric core row, and the plurality of electric core rows are connected in series by the single-layer nickel-plated steel sheets to form a lithium battery power supply module.
The utility model has the advantages as follows:
the embodiment of the utility model provides a novel power module comprises a shell, a cell column which is fixed inside the shell and consists of lithium battery cells which are connected in parallel, a double-layer nickel-plated steel strip and a single-layer nickel-plated steel strip which are fixed on the cell column by spot welding, a single-layer nickel-plated steel strip which is used for realizing the mutual series connection between the cell columns, a circuit board connecting head which is fixed between the double-layer nickel-plated steel strip by tin soldering or laser welding, a sheet nickel-plated steel strip which is fixed between the circuit board connecting heads by tin soldering or laser welding, and a power management circuit board which is electrically connected with the circuit board connecting heads, wherein the double-layer nickel-plated steel strip comprises a bottom layer nickel-plated steel strip and a top layer nickel-plated steel strip which are fixed by spot welding, wherein the bottom layer nickel-plated steel strip is electrically connected and fixed between the cell columns by spot welding, the top layer, through adopting double-deck nickel plating steel band in tip electricity core row department, make the resistance of double-deck nickel plating steel band reduce half, the electric current converges more evenly, maintenance electric core uniformity that can be better, and bottom nickel plating steel band and top layer nickel plating steel band can adopt different technology to be fixed with lithium cell and module positive and negative pole line respectively, afterwards, adopt the mode reciprocal anchorage of spot welding again, decompose through the process and reduce the battery module assembly technology degree of difficulty, promote production work efficiency, and through adopting soldering tin or laser welding and slice nickel plating steel band to fixed in advance with circuit board connecting wire head, and then adopt the mode of spot welding to fix the upper surface at top layer nickel plating steel band or individual layer nickel plating steel band with slice nickel plating steel band, can avoid the direct conduction of heat of soldering tin or laser welding to lead to the fact the uniformity variation of electric core for electric core, further extension.
Drawings
Fig. 1 is a schematic top view of a novel power module according to an embodiment of the present invention;
fig. 2 is a schematic side view of the novel power module according to the embodiment of the present invention.
Detailed Description
A novel power module according to an embodiment of the present invention will be described in detail with reference to fig. 1-2.
Referring to fig. 1 and 2, a novel power module provided by the embodiment of the present invention comprises a housing 1, a cell array 3 formed by connecting lithium battery cells 2 in parallel and fixed inside the housing 1, a double-layer nickel-plated steel strip 5 and a single-layer nickel-plated steel strip 4 fixed on the cell array 3 by spot welding, a single-layer nickel-plated steel strip 6 for connecting the cell array 3 in series, a circuit board connecting terminal 8 electrically connected to a power management circuit board 7, and a sheet nickel-plated steel strip 9 fixed to the circuit board connecting terminal 8 by soldering tin or laser welding, wherein the double-layer nickel-plated steel strip 5 comprises a bottom layer nickel-plated steel strip 501 and a top layer nickel-plated steel strip 502 which are fixed by spot welding, the bottom nickel-plated steel strip 501 is electrically connected and fixed with the cell array 3 through spot welding, the top nickel-plated steel strip 502 is fixed with the main negative and positive lines through soldering tin or laser welding, and the sheet-shaped nickel-plated steel strip 9 is fixed on the upper surface of the top nickel-plated steel strip 502 or the single-layer nickel-plated steel strip 5 through spot welding.
Specifically, refer to fig. 2 and fig. 1, soldering tin or laser beam welded fastening between double-deck nickel plating steel band 5 and the lithium battery power module positive line 10 on first electricity core row 301, and soldering tin or laser beam welded fastening between double-deck nickel plating steel band 5 and the lithium battery power module negative line 11 on sixth electricity core row 306 are fixed in the spot welding, also can be earlier with the utility model discloses the mode that double-deck nickel plating steel band 5's bottom nickel plating steel band 501 adopted the spot welding is fixed on lithium battery electricity core, adopts soldering tin or laser beam welded fastening at top layer nickel plating steel band 502 with main negative positive line simultaneously. And then the bottom nickel-plated steel strip 501 and the top nickel-plated steel strip 502 are fixed by spot welding, so that the problem that the consistency of the battery cell is influenced by overheating of the battery cell and the service life of the whole battery is influenced in the process of soldering or laser welding can be avoided. And the bottom layer nickel-plated steel strip 501 and the top layer nickel-plated steel strip 502 can be welded together after being fixed with other components by different processes, the process difficulty and the risk are reduced through process decomposition, and the working efficiency can be improved.
Specifically, referring to fig. 2 and fig. 1, a single-layer nickel-plated steel strip 4 spot-welded to the second cell row 302 and a single-layer nickel-plated steel strip 4 spot-welded to the third cell row 303 are connected in series by a single-layer nickel-plated steel sheet 6, a single-layer nickel-plated steel strip 4 spot-welded to the fourth cell row 304 and a single-layer nickel-plated steel strip 4 spot-welded to the fifth cell row 305 are connected in series by a single-layer nickel-plated steel sheet 6, a top-layer nickel-plated steel strip 502 and a sheet-shaped nickel-plated steel strip 9 are spot-welded to each other, and one of the two single-layer nickel-plated steel. Also can make earlier as required and detect the slice nickel plating steel band 9 that wire quantity is the same in the cable, later let each wire head all weld a slice nickel plating steel band 9 through soldering tin or laser welding's mode, and then after this novel battery module assembly production is accomplished, launch the mode of spot welding for the special handling and fix slice nickel plating steel band 9 at top layer nickel plating steel band 502 or the upper surface of individual layer nickel plating steel band 4 with slice nickel plating steel band 9, adopt the mode of spot welding to fix slice nickel plating steel band 9 at top layer nickel plating steel band 502 or the upper surface of individual layer nickel plating steel band 4 after soldering tin or laser welding accomplish, can avoid soldering tin or laser welding's heat transfer to cause electric core uniformity to be criticized the deterioration for electric core, and spot welding connects the heat little and efficient, the uniformity of maintenance electric core that can be better prolongs its life. And the processes of welding a sheet-shaped nickel-plated steel strip 9 on each lead head and fixing the sheet-shaped nickel-plated steel strip 9 on the upper surface of the top layer nickel-plated steel strip 502 or the single layer nickel-plated steel strip 4 in a spot welding mode are mutually decomposed in a soldering tin or laser welding mode, so that the reduction of the process difficulty and the improvement of the working efficiency are realized.
Optionally, the lower surface of the bottom layer nickel-plated steel strip and the lithium battery cell are fixed through spot welding, and the lower surface of the single-layer nickel-plated steel strip and the upper surface of the single-layer nickel-plated steel sheet are fixed through spot welding.
In an example, five lithium battery cells are connected in parallel to form a cell row, and 6 cell rows adopt the single-layer nickel-plated steel sheets to be connected in series to form a lithium battery power module, wherein, 6 cell rows are only distance descriptions and are not limited to the novel power module structure of the embodiment of the present invention. The novel power module of the embodiment of the present invention can further include 7 cell rows, and each cell row is formed by connecting other digital lithium battery cells in parallel.
Referring to fig. 1 and 2, the lower surface of the underlying nickel-plated steel strip 501 is fixed to the lithium battery cell 2 by spot welding, and the lower surface of the single-layer nickel-plated steel strip 4 is fixed to the upper surface of the single-layer nickel-plated steel strip 6 by spot welding. And the width and the length of the single-layer nickel-plated steel strip 4 are larger than those of the single-layer nickel-plated steel strip 6. The example, five lithium cell electricity core 2 connect in parallel and constitute an electricity core and be listed as 3, and 6 electricity cores are listed as 3 and adopt 4 series connection each other of individual layer nickel plating steel band to constitute one the utility model discloses lithium cell power module.
The embodiment of the utility model provides a novel power module comprises a shell, a cell column which is fixed inside the shell and consists of lithium battery cells which are connected in parallel, a double-layer nickel-plated steel strip and a single-layer nickel-plated steel strip which are fixed on the cell column by spot welding, a single-layer nickel-plated steel strip which is used for realizing the mutual series connection between the cell columns, a circuit board connecting head which is fixed between the double-layer nickel-plated steel strip by tin soldering or laser welding, a sheet nickel-plated steel strip which is fixed between the circuit board connecting heads by tin soldering or laser welding, and a power management circuit board which is electrically connected with the circuit board connecting heads, wherein the double-layer nickel-plated steel strip comprises a bottom layer nickel-plated steel strip and a top layer nickel-plated steel strip which are fixed by spot welding, wherein the bottom layer nickel-plated steel strip is electrically connected and fixed between the cell columns by spot welding, the top layer, through adopting double-deck nickel plating steel band in tip electricity core row department, make the resistance of double-deck nickel plating steel band reduce half, the electric current converges more evenly, maintenance electric core uniformity that can be better, and bottom nickel plating steel band and top layer nickel plating steel band can adopt different technology to be fixed with lithium cell and module positive and negative pole line respectively, afterwards, adopt the mode reciprocal anchorage of spot welding again, decompose through the process and reduce the battery module assembly technology degree of difficulty, promote production work efficiency, and through adopting soldering tin or laser welding and slice nickel plating steel band to fixed in advance with circuit board connecting wire head, and then adopt the mode of spot welding to fix the upper surface at top layer nickel plating steel band or individual layer nickel plating steel band with slice nickel plating steel band, can avoid the direct conduction of heat of soldering tin or laser welding to lead to the fact the uniformity variation of electric core for electric core, further extension.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A novel power supply module is characterized by comprising a shell, a cell array which is fixed in the shell and is formed by connecting lithium battery cells in parallel, a double-layer nickel-plated steel strip and a single-layer nickel-plated steel strip which are fixed on the cell array in a spot welding manner, a single-layer nickel-plated steel strip which is used for realizing the mutual series connection between the cell arrays, a circuit board connecting head which is electrically connected with a power management circuit board, and a sheet nickel-plated steel strip which is fixed with the circuit board connecting head by adopting soldering tin or laser welding, wherein the double-layer nickel-plated steel strip comprises a bottom layer nickel-plated steel strip and a top layer nickel-plated steel strip which are fixed by spot welding, wherein the bottom layer nickel-plated steel strip is electrically connected and fixed with the battery cell array in a spot welding way, the top layer nickel-plated steel strip is fixed with the main negative and positive lines in a soldering or laser welding way, and the sheet nickel-plated steel strip is fixed on the upper surface of the top layer nickel-plated steel strip or the single layer nickel-plated steel strip in a spot welding mode.
2. The novel power module as claimed in claim 1, wherein the double-layer nickel-plated steel strip spot-welded and fixed on the first cell row and the positive line of the lithium battery power module are fixed by soldering or laser welding, the double-layer nickel-plated steel strip spot-welded and fixed on the last cell row and the negative line of the lithium battery power module are fixed by soldering or laser welding, the single-layer nickel-plated steel strip spot-welded and fixed on the second cell row and the single-layer nickel-plated steel strip spot-welded and fixed on the third cell row are connected in series by the single-layer nickel-plated steel strip, the single-layer nickel-plated steel strip spot-welded and fixed on the fourth cell row and the single-layer nickel-plated steel strip spot-welded and fixed on the fifth cell row, and the top layer nickel-plated steel strip and the sheet nickel-plated steel strip are fixed in a spot welding manner, and one of the two single-layer nickel-plated steel strips which are mutually connected in series is fixed in the sheet nickel-plated steel strip in a spot welding manner.
3. The novel power module as claimed in claim 1, wherein the lower surface of the bottom layer nickel-plated steel strip and the lithium battery cell are fixed by spot welding, and the lower surface of the single layer nickel-plated steel strip and the upper surface of the bottom layer nickel-plated steel strip are fixed by spot welding.
4. The novel power module as claimed in claim 3, wherein a plurality of lithium battery cells are connected in parallel to form a cell row, and a plurality of the cell rows are connected in series to form a lithium battery power module by the single-layer nickel-plated steel sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541652.0U CN210607427U (en) | 2019-09-17 | 2019-09-17 | Novel power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541652.0U CN210607427U (en) | 2019-09-17 | 2019-09-17 | Novel power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210607427U true CN210607427U (en) | 2020-05-22 |
Family
ID=70697175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921541652.0U Expired - Fee Related CN210607427U (en) | 2019-09-17 | 2019-09-17 | Novel power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210607427U (en) |
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2019
- 2019-09-17 CN CN201921541652.0U patent/CN210607427U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |