CN109904378B - Lithium battery energy storage module and lithium battery energy storage module - Google Patents
Lithium battery energy storage module and lithium battery energy storage module Download PDFInfo
- Publication number
- CN109904378B CN109904378B CN201910140388.8A CN201910140388A CN109904378B CN 109904378 B CN109904378 B CN 109904378B CN 201910140388 A CN201910140388 A CN 201910140388A CN 109904378 B CN109904378 B CN 109904378B
- Authority
- CN
- China
- Prior art keywords
- energy storage
- storage module
- lithium battery
- plate
- battery energy
- 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.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 179
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 136
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 134
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 91
- 229910052802 copper Inorganic materials 0.000 claims description 91
- 239000010949 copper Substances 0.000 claims description 91
- 238000009434 installation Methods 0.000 claims description 42
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000003825 pressing Methods 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention belongs to the technical field of battery products, and particularly relates to a lithium battery energy storage module and a lithium battery energy storage module. The lithium battery energy storage module comprises a battery core, a battery core bracket and a busbar, wherein a tab of the battery core is fixed on a tab fixing part of the battery core bracket; the busbar includes first busbar board, second busbar board and connecting plate, and first busbar board and second busbar board are welded with the utmost point ear of installing the electric core on electric core support respectively, and connecting plate and utmost point ear fixed part fixed connection. So, set up special busbar and be used for establishing ties or parallelly connected each electric core on the electric core support, electric area when electric core is converged through the size that control first busbar and second busbar can be reasonable to ensure effective electric area between the electric core, prevent that lithium cell energy storage module from overheated causing energy loss, be favorable to realizing energy storage module's good heat management and control, improve energy storage module's energy storage availability factor simultaneously.
Description
Technical Field
The invention belongs to the technical field of battery products, and particularly relates to a lithium battery energy storage module and a lithium battery energy storage module.
Background
Since the advent of 1990, lithium ion batteries have been strongly touted by industries such as 3C digital and power tools, and particularly contributed to the new energy automobile industry, because of the advantages of high energy density, high voltage, environmental protection, long service life, and rapid charging.
As is well known, the energy storage capacity of the lithium battery cells is limited, the power supply requirement of an electric energy product cannot be met when the lithium battery cells are used independently, and several to hundreds of lithium battery cell strings are connected in series and parallel to form one or more battery modules, so that the electric energy of a plurality of lithium batteries can be collected and integrated together for output, the energy storage and the energy storage of the lithium batteries can be greatly improved, and the power utilization requirement of the product is met. The mode that the battery module is formed by connecting a plurality of battery cells in series and parallel solves the requirement of concentrated power supply of large electric quantity of electric energy products, but because the quantity of single battery cells in series and parallel connection is more, the quantity of corresponding electric connection sheets used for series and parallel connection is also relatively more, the effective contact area between each battery cell is often reduced due to unreasonable design of the electric connection sheets, thereby leading to the increase of the resistance value of the connection part, the battery module can generate a large quantity of heat at the electric connection sheet with large resistance value during the electrifying operation, resulting in energy loss, being unfavorable for the energy storage heat management of the battery module, greatly reducing the energy storage service efficiency of the battery module, shortening the service life of the battery module, and causing the safety problem due to the overhigh system temperature of the whole application battery module.
Disclosure of Invention
The invention aims to provide a lithium battery energy storage module and a lithium battery energy storage module, and aims to solve the technical problem that the energy storage module or the energy storage module generates excessive heat due to the fact that the effective electric contact area between each electric core is reduced due to unreasonable design of an electric connection piece of the lithium battery energy storage module or the module in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: a lithium battery energy storage module comprising:
a battery cell;
the battery cell bracket is used for installing and fixing a battery cell, the battery cell bracket is provided with a first installation surface and a second installation surface which are oppositely arranged and used for installing the battery cell, the end part of the battery cell bracket extends towards the direction deviating from the first installation surface/the second installation surface to form a tab fixing part, the tab of the battery cell installed in the first installation surface extends out of the first installation surface and is fixed on the upper surface of the tab fixing part, and the tab of the battery cell installed in the second installation surface extends out of the second installation surface and is fixed on the lower surface of the tab fixing part;
the bus bar is used for electrically connecting each battery cell installed on the battery cell support, and comprises a first bus plate, a second bus plate and a connecting plate, wherein the first bus plate, the second bus plate and the connecting plate are arranged in parallel, the connecting plate is connected between adjacent ends of the first bus plate and the second bus plate, the first bus plate is welded with a lug of the battery cell installed in the first installation surface, the second bus plate is welded with a lug of the battery cell installed in the second installation surface, and the connecting plate is fixedly connected with the lug fixing part.
Preferably, the first bus plate cover is arranged on the upper surface of the lug of the battery cell arranged in the first mounting surface, and the second bus plate cover is arranged on the lower surface of the lug of the battery cell arranged in the second mounting surface; and the cross sectional areas of the first bus plate and the second bus plate are larger than or equal to the cross sectional area of the corresponding tab.
Preferably, a plurality of first connecting holes are formed in the end portion, away from the first mounting surface/the second mounting surface, of the tab fixing portion, a plurality of second connecting holes corresponding to the first connecting holes are formed in the connecting plate, the connecting plate is fixedly connected with the tab fixing portion through a first fastening piece, and one end of the first fastening piece penetrates out of the second connecting holes and then is fixed in the corresponding first connecting holes.
Preferably, the cell support is a plastic support, and the bus bar is a copper bus bar.
Preferably, the lithium battery energy storage module further comprises an upper protection cover plate and a lower protection cover plate for protecting the battery cell, the upper protection cover plate covers the upper side of the first mounting surface and encloses with the battery cell bracket to form a first mounting space, the lower protection cover plate covers the lower side of the second mounting surface and encloses with the battery cell bracket to form a second mounting space, and the battery cell is packaged in the first mounting space and/or the second mounting space.
The invention has the beneficial effects that: the invention relates to a lithium battery energy storage module which is provided with a battery cell bracket special for installing battery cells and a busbar for electrically connecting all battery cells installed on the battery cell bracket, wherein the battery cell bracket is provided with a first installation surface and a second installation surface which are oppositely arranged, and the battery cells are installed and fixed in the first installation surface and the second installation surface; the end part of the battery cell bracket, which is away from the first mounting surface/the second mounting surface, is also extended to form a tab fixing part, tabs of the battery cells mounted on the first mounting surface and the second mounting surface of the battery cell bracket are respectively fixed on the upper surface and the lower surface of the tab fixing part, and the bus bar is fixedly connected with the tab fixing part; the busbar has relative first busbar board and the second busbar board that sets up, and wherein, the utmost point ear welding of electric core in first busbar board and the first installation face, the utmost point ear welding of electric core in the second installation face of second busbar board and the collection electric current of electric core on the electric core support. So, set up special busbar and be used for establishing ties or parallelly connected each electric core on the electric core support, electric area of contact when can reasonable setting up electric core and converging through the first busbar of control busbar and the size of second busbar to can ensure the effective electric area of contact between electric core and the electric core, avoid leading to electric hookup location department resistance too big and produce a large amount of heat because of effective electric area's reduction, prevent lithium cell energy storage module's energy loss, be favorable to realizing energy storage module's good heat management and control, improve energy storage module's energy storage availability factor simultaneously.
The other technical scheme of the invention is as follows: the utility model provides a lithium battery energy storage module, includes a plurality of above-mentioned lithium battery energy storage module and a plurality of electric connection copper sheet that is used for each lithium battery energy storage module of electric connection, and each lithium battery energy storage module stacks the setting about or, each electric connection copper sheet respectively with each lithium battery energy storage module on adjacent busbar fixed connection.
Preferably, the electric connection copper sheet comprises a plurality of series copper sheets for connecting each lithium battery energy storage module in series and a plurality of parallel copper sheets for connecting each lithium battery energy storage module in parallel, and each series copper sheet and each parallel copper sheet are fixedly connected with the connecting plate of each busbar through a second fastener.
Preferably, the series copper sheets comprise a straight plate series copper sheet and a folded plate series copper sheet, and the lithium battery energy storage module comprises a first energy storage module assembly and a second energy storage module assembly which are respectively composed of a plurality of lithium battery energy storage modules;
the bus bars of the first energy storage module are arranged in the same plane, the bus bars of the second energy storage module are arranged in the same plane, and the parallel copper sheet and the straight plate series copper sheet are respectively connected with the bus bars in the same plane;
the plane that first energy storage module is provided with the busbar and the plane that second energy storage module is provided with the busbar set up relatively, and folded plate series connection copper sheet includes parallel arrangement's first straight plate portion, second straight plate portion and connects the connecting portion between the adjacent tip of first straight plate portion and second straight plate portion, and first straight plate portion is connected with the busbar on the first energy storage module, and second straight plate portion is connected with the busbar on the second energy storage module.
Preferably, the lithium battery energy storage module further comprises a plurality of pressing strips used for assembling and connecting the lithium battery energy storage modules, and each pressing strip is connected with each battery core bracket respectively so as to connect and assemble the lithium battery energy storage modules together.
Preferably, the electric connection copper sheet is punched by a red copper sheet with the thickness of 0.5 mm-2 mm.
The lithium battery energy storage module comprises a plurality of stacked lithium battery energy storage modules, and is electrically connected with the bus bars on each lithium battery energy storage module through the electric connection copper sheets, so that current collection among each lithium battery energy storage module can be realized; in addition, the bus bars of the lithium battery energy storage modules are connected through the electric connection copper sheets, so that the series-parallel connection bus bars of the lithium battery energy storage modules can be realized, the structure is simple, and the assembly operation is simple and convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram III of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 5 is a partially exploded view of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a battery core support of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electrical core of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a parallel copper sheet of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a straight-plate series copper sheet of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a folded plate series copper sheet of a lithium battery energy storage module according to an embodiment of the present invention;
fig. 11 is an enlarged view of a in fig. 3.
Wherein, each reference sign in the figure:
1-lithium battery energy storage module 2-lithium battery energy storage module 10-battery core
11-tab 20-cell holder 21-first mounting surface
22-second mounting surface 23-tab fixing portion 24-first connecting hole
25-third connecting hole 26-support bar 30-busbar
31-first bus plate 32-second bus plate 33-connecting plate
40-upper protective cover 41-fourth connecting hole 42-second fastener
43-radiating holes 50-lower protective cover plate 60-electric connection copper sheet
61-series copper sheet 62-parallel copper sheet 63-fifth connecting hole
64-third fastener 70-bead 71-straight bead
72-special-shaped pressing strip 331-second connecting hole 201-first energy storage module
202-second energy storage module 611-straight plate series copper sheet 612-folded plate series copper sheet
6121-first straight plate portion 6122-second straight plate portion 6133-connecting portion.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 11 are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 11, an embodiment of the present invention provides a lithium battery energy storage module 1, which is suitable for serial-parallel bus-connection of single-head bipolar ear-packaged lithium battery cells, specifically, as shown in fig. 4 to 10, the lithium battery energy storage module 1 includes a battery cell 10, a battery cell support 20 and a bus bar 30, wherein the battery cell support 20 is used for mounting and fixing the battery cell 10, and the bus bar 30 is used for electrically connecting each battery cell 10 mounted on the battery cell support 20; specifically, the battery cell bracket 20 has a first mounting surface 21 and a second mounting surface 22 which are disposed opposite to each other and are used for mounting the battery cell 10, a tab fixing portion 23 is formed by extending an end portion of the battery cell bracket 20 in a direction away from the first mounting surface 21/the second mounting surface 22, a tab 11 of the battery cell 10 mounted in the first mounting surface 21 extends out of the first mounting surface 21 and is fixed to an upper surface of the tab fixing portion 23, and a tab 11 of the battery cell 10 mounted in the second mounting surface 22 extends out of the second mounting surface 22 and is fixed to a lower surface of the tab fixing portion 23; the bus bar 30 includes a first bus plate 31, a second bus plate 32, and a connection plate 33 connected between adjacent ends of the first bus plate 31 and the second bus plate 32, the first bus plate 31 is welded to the tab 11 of the battery cell 10 mounted in the first mounting surface 21, the second bus plate 32 is welded to the tab 11 of the battery cell 10 mounted in the second mounting surface 22, and the connection plate 33 is fixedly connected to the tab fixing portion 23. In some specific embodiments, two bus bars 30 are generally connected to the same cell holder 20 for connecting the left and right tabs 11 of the single-headed bipolar battery cell, as shown in fig. 5 and 7.
The lithium battery energy storage module 1 of the embodiment of the invention is provided with a battery cell bracket 20 special for installing battery cells 10 and a bus bar 30 for electrically connecting each battery cell 10 installed on the battery cell bracket 20, specifically, the battery cell bracket 20 is provided with a first installation surface 21 and a second installation surface 22 which are oppositely arranged, and the battery cells 10 are installed and fixed in the first installation surface 21 and the second installation surface 22; the end of the battery cell bracket 20, which is away from the first mounting surface 21/the second mounting surface 22, is further extended to form a tab fixing portion 23, the tabs 11 of the battery cells 10 mounted on the first mounting surface 21 and the second mounting surface 22 of the battery cell bracket 20 are respectively fixed on the upper surface and the lower surface of the tab fixing portion 23, the bus bar 30 is fixedly connected with the tab fixing portion 23, and the bus bar 30 is provided with a first bus bar plate 31 and a second bus bar plate 32 which are oppositely arranged, wherein the first bus bar plate 31 is welded with the tabs 11 of the battery cells 10 in the first mounting surface 21, and the second bus bar plate 32 is welded with the tabs 11 of the battery cells 10 in the second mounting surface 22 so as to collect current of the battery cells 10 on the battery cell bracket 20. So, set up special busbar 30 and be used for establishing ties or parallelly connected each electric core 10 on the electric core support 20, through the electric area of contact when the electric core 10 converges of the size of the first busbar 31 of control busbar 30 and second busbar 32 can reasonable setting, thereby can ensure the effective electric area of contact between electric core 10 and the electric core 10, avoid leading to the electric hookup location resistance too big and producing a large amount of heat because of effective electric area's reduction, prevent the energy loss of lithium cell energy storage module 1, be favorable to realizing the good thermal management of energy storage module, improve energy storage availability factor of energy storage module simultaneously.
Specifically, the tab 11 of the battery cell 10 mounted in the first mounting surface 21 is welded to the first busbar 31 by laser welding or spot welding, and similarly, the tab 11 of the battery cell 0 mounted in the second mounting surface 22 is welded to the second busbar 32 by laser welding or spot welding; the adoption of laser welding or spot welder welding has the advantages of simple welding operation, high welding speed, high welding strength, good sealing performance and the like, and is beneficial to improving the assembly efficiency of the lithium battery energy storage module 1.
In another embodiment of the present invention, as shown in fig. 4 to 7, a first bus plate 31 is provided to cover the upper surface of the tab 11 of the battery cell 10 mounted in the first mounting surface 21, and a second bus plate 32 is provided to cover the lower surface of the tab 11 of the battery cell 10 mounted in the second mounting surface 22, specificallyThe tab 11 of the battery cell 10 in the first mounting surface 21 is attached to the upper surface of the tab fixing portion 23, the first bus plate 31 is attached to the upper surface of the tab 11 deviating from the tab fixing portion 23 in a welding manner, the tab 11 of the battery cell 10 in the second mounting surface 22 is attached to the lower surface of the tab fixing portion 23, the second bus plate 32 is attached to the lower surface of the tab 11 deviating from the tab fixing portion 23 in a welding manner, and therefore the size of the tab 11 determines the size of the electrical contact area between the tab 11 and the bus bar 30, and the whole tab 11 is in electrical contact with the bus bar 30. Specifically, in this embodiment, the temperature rise is generally measured, and under the same current conditions, according to p=i 2 * As can be seen from R (where P represents power, I represents current, and R represents resistance), the larger the R is, the larger the heating power is, and the inverse relation between R and the electrical contact area is, in this embodiment, the first bus plate 31 and the second bus plate 32 of the bus bar 30 are respectively welded and attached to the surface of the tab 11 of the corresponding battery cell 10, the entire tab 11 is connected with the bus bar 30, which corresponds to the maximum electrical contact area when electrical connection is provided, and the R value at the electrical connection position is reduced, so that the heating power when the lithium battery energy storage module 1 of this embodiment is converged can be changed.
Preferably, the cross-sectional areas of the first bus plate 31 and the second bus plate 32 are larger than or equal to the cross-sectional area of the corresponding tab 11, i.e. the cross-sectional area of the first bus plate 31 is larger than the cross-sectional area of the tab 11 of the cell 10 in the first mounting surface 21, and the cross-sectional area of the second bus plate 32 is larger than the cross-sectional area of the tab 11 of the cell 10 in the second mounting surface 22; in this way, the tab 11 of the battery core 10 can be fully attached to the first bus plate 31/the second bus plate 32, so as to provide the largest electrical contact area, and meanwhile, the cross sectional areas of the first bus plate 31 and the second bus plate 32 are larger than the cross sectional area of the tab 11 of the corresponding battery core 10, which is equivalent to increasing the heat dissipation area of the electrical contact position, and can more effectively prevent the high temperature overheat at the electrical contact position.
In another embodiment of the present invention, as shown in fig. 4 and 5, a plurality of first connection holes 24 are formed at the end of the tab fixing portion 23 facing away from the first mounting surface 21/the second mounting surface 22, a plurality of second connection holes 331 corresponding to the first connection holes 24 are formed on the connection plate 33, the connection plate 33 is fixedly connected with the tab fixing portion 23 through a first fastener (not shown) such as a screw, and one end of the first fastener penetrates through the second connection holes 331 and is fixed in the corresponding first connection holes 24; when the lithium battery energy storage module 1 in this embodiment is assembled, the battery cell 10 is firstly installed and fixed in the first installation surface 21 and/or the second installation surface 22, and then the busbar 30 is inserted onto the fixed end of the tab 11 of the battery cell bracket 20 and the first fastener is screwed, so that the assembly operation is very convenient.
In another embodiment of the present invention, the cell support 20 is a plastic support to ensure that the cell main bodies (except for the tab 11) of the two cells 10 mounted in the first mounting surface 21 and the second mounting surface 22 are electrically insulated, so as to avoid short circuit; the bus bar 30 is a copper bus bar 30 to ensure electrical conduction between the tabs 11 of the two battery cells 10 mounted in the first mounting surface 21 and the second mounting surface 22.
In another embodiment of the present invention, as shown in fig. 6, the battery cell support 20 is a frame-shaped plastic support with a hollowed-out middle part, and the upper surface and the lower surface of the frame-shaped plastic support are a first mounting surface 21 and a second mounting surface 22 corresponding to each other, and when the battery cell 10 is mounted on the battery cell support 20, the battery cell 10 is correspondingly embedded in the upper surface and the lower surface of the frame-shaped plastic support; and, the hollow position in the middle of the frame-shaped plastic support is also provided with at least two plastic support bars 26 in a crossing way, and the plastic support bars are used for supporting and electrically isolating the battery cells 10 installed in the first installation surface 21 and the second installation surface 22. So, use the frame shape plastic support fixed battery core 10 of middle part fretwork, the insulativity is good, safe in utilization to can also obviously reduce the risk that takes place the short circuit between the battery core 10, the quality is ensured, and the whole quality is lighter, and it is convenient to assemble in the follow-up re-PACK, is favorable to promoting packaging efficiency, saves assemble time.
In another embodiment of the present invention, as shown in fig. 4, the lithium battery energy storage module 1 further includes an upper protection cover 40 and a lower protection cover 50 for protecting the battery cell 10, the upper protection cover 40 covers over the first mounting surface 21 and encloses with the battery cell bracket 20 to form a first mounting space (not shown), the lower protection cover 50 covers under the second mounting surface 22 and encloses with the battery cell bracket 20 to form a second mounting space (not shown), and the battery cell 10 is encapsulated in the first mounting space and/or the second mounting space. Specifically, the four corners of the end of the cell support 20 are respectively provided with a plurality of third connecting holes 25, the positions of the upper protective cover plate 40 and the lower protective cover plate 50 opposite to the third connecting holes 25 are provided with a plurality of fourth connecting holes 41, the upper protective cover plate 40 and the lower protective cover plate 50 are connected and fixed with the cell support 20 through second fasteners 42 such as screws, and one ends of the second fasteners 42 penetrate through the fourth connecting holes 41 and are fixed in the corresponding third connecting holes 25. More specifically, the upper protection cover plate 40 and the lower protection cover plate 50 are both plastic cover plates, so that the insulation characteristics of the lithium battery energy storage module 1 of the embodiment are better ensured, and meanwhile, the overall quality of the lithium battery energy storage of the module is reduced. Specifically, the upper protective cover plate 40 and the lower protective cover plate 50 are further provided with a plurality of heat dissipation holes 43 for dissipating heat, so as to better ensure that heat generated by the battery cell 10 can be dissipated in time.
As shown in fig. 1 to 11, another embodiment of the present invention further provides a lithium battery energy storage module 2, specifically as shown in fig. 1 to 3, which includes a plurality of lithium battery energy storage modules 1 in the above embodiments and a plurality of electrical connection copper sheets 60 for electrically connecting each lithium battery energy storage module 1, wherein each lithium battery energy storage module 1 is stacked up and down or left and right, and each electrical connection copper sheet 60 is fixedly connected with an adjacent busbar 30 on each lithium battery energy storage module 1.
The lithium battery energy storage module 2 of the embodiment of the invention comprises a plurality of stacked lithium battery energy storage modules 1, and is electrically connected with the bus bars 30 on each lithium battery energy storage module 1 through the electric connection copper sheets 60, so that current collection among each lithium battery energy storage module 1 can be realized, and on the basis that the electric connection contact area of a single lithium battery energy storage module 1 is ensured by arranging the bus bars 30, the electric contact area during the bus connection among each lithium battery energy storage module 1 can be further ensured by designing and controlling the size of the electric connection copper sheets 60, the effective electric contact area at the serial-parallel connection position of each lithium battery energy storage module 1 is ensured, the resistance value is reduced, the heating is reduced, and the effective heat management of the lithium battery energy storage module 2 is realized; in addition, the bus bar 30 of each lithium battery energy storage module 2 is connected by adopting the electric connection copper sheet 60, so that the series-parallel connection bus bar of each lithium battery energy storage module 1 can be realized, the structure is simple, and the assembly operation is simple and convenient.
In this embodiment, as shown in fig. 1 and 2, when the lithium battery energy storage modules 1 are stacked up and down or left and right, the bus bars 30 of the battery energy storage modules are all located in the same plane, so that the electrical connection copper sheets 60 are all connected and fixed on the same side of the lithium battery energy storage module 2, that is, the tab 11 of each battery cell 10 is concentrated in the center position of the same side of the lithium battery energy storage module 2, the installation is simple, and the tab 11 of the battery cell 10 is arranged in this way, so that the voltage wire harness and the sampling wire harness can be concentrated in the central wiring of the whole module, and the wiring is short, and the wiring is concise and attractive.
In this embodiment, as shown in fig. 1 to 3 and fig. 8 to 11, the electrical connection copper sheet 60 includes a plurality of series copper sheets 61 for connecting each lithium battery energy storage module 1 in series and a plurality of parallel copper sheets 62 for connecting each lithium battery energy storage module 1 in parallel, and the lithium battery energy storage module 2 realizes the series connection and the parallel connection of each lithium battery energy storage module 1 through the series copper sheets 61 and the parallel copper sheets 62; specifically, each of the series copper sheets 61 and each of the parallel copper sheets 62 is fixedly connected with the connecting plate 33 of each of the bus bars 30 through the second fastening piece 42, a plurality of fifth connecting holes 63 are formed in each of the series copper sheets 61 and the parallel copper sheets 62, the fifth connecting holes 63 are respectively in one-to-one correspondence with the second connecting holes 331 in the connecting plate 33 of the bus bars 30, and each of the series copper sheets 61 and the parallel copper sheets 62 is fixedly connected with each of the bus bars 30 through a third fastening piece 64 such as a screw; when the lithium battery energy storage module 2 of the embodiment is assembled, the lithium battery energy storage modules 1 are stacked and placed, the bus bars 30 are arranged in the same plane in an up-down, left-right and right-right orderly mode, and then the third fastening piece 64 is screwed down, so that the assembly process is simple and the operation is convenient.
Specifically, as shown in fig. 2, when the electrical connection copper sheet 60 is provided to connect the respective bus bars 30 of the respective lithium battery energy storage modules 1, only the third fastening member 64 is provided to connect, that is, the third fastening member 64 connects and fixes the bus bars 30 to the tab fixing portion 23, at this time, no additional first fastening member is required to fix the bus bars 30, so that the operation during assembly can be further simplified, and the usage of fastening members can be reduced, and the overall weight of the lithium battery energy storage module 2 can be reduced. And, when a plurality of lithium battery energy storage modules 1 assemble into lithium battery energy storage module 2, only the upper surface of lithium battery energy storage module 1 of top sets up protection apron 40, and the lower surface of lithium battery energy storage module 1 of below sets up protection apron 50, and the lithium battery energy storage module 1 of middle part can need not to set up protection apron 40 and lower protection apron 50, so, not only can play the purpose of protecting electric core 10, can also reduce whole volume of whole lithium battery energy storage module 2.
In this embodiment, as shown in fig. 2, 3 and fig. 8 to 11, the series copper sheet 61 includes a straight-plate series copper sheet 611 and a folded-plate series copper sheet 612, and the lithium battery energy storage module 1 includes a first energy storage module 201 and a second energy storage module 202 respectively composed of a plurality of lithium battery energy storage modules 1; the bus bars 30 of the first energy storage module 201 are arranged in the same plane, the bus bars 30 of the second energy storage module 202 are arranged in the same plane, and the parallel copper sheet 62 and the straight-plate series copper sheet 611 are respectively connected with the bus bars 30 in the same plane; the plane of the first energy storage module 201 provided with the busbar 30 is opposite to the plane of the second energy storage module 202 provided with the busbar 30, and the folded plate series copper sheet 612 comprises a first straight plate portion 6121, a second straight plate portion 6122 and a connecting portion 6133 connected between adjacent ends of the first straight plate portion 6121 and the second straight plate portion 6122, wherein the first straight plate portion 6121 is connected with the busbar 30 on the first energy storage module 201, and the second straight plate portion 6122 is connected with the busbar 30 on the second energy storage module 202. In this way, the folded plate serial copper sheets 612 are arranged to connect two adjacent groups of lithium battery energy storage modules 2, so that the first energy storage module 201 and the second energy storage module 202 which are independent of each other are assembled together to form a lithium battery energy storage module 2 with larger energy storage capacity, so that the energy storage capacity of a single lithium battery energy storage module 2 is further expanded, and fig. 3 is a connection state diagram when the folded plate parallel copper sheets 62 are adopted to connect the adjacent first energy storage module 201 and the adjacent second energy storage module 202. Of course, in other embodiments, the lithium battery energy storage module 2 includes, but is not limited to, the first energy storage module 201 and the second energy storage module 202 described above, which may also include more energy storage modules, and each adjacent energy storage module is connected by a folded plate series copper sheet 612.
In this embodiment, as shown in fig. 1 to 3, the lithium battery energy storage module 2 further includes a plurality of battens 70 for assembling and connecting each lithium battery energy storage module 1, each batten 70 is respectively connected with the cell support 20 of each lithium battery energy storage module 1 to connect and assemble each lithium battery energy storage module 1 together, specifically, the battens 70 are fixedly connected with the upper protection cover plate 40 or the lower protection cover plate 50 of each lithium battery energy storage module 1, so that each lithium battery energy storage module 1 is assembled and connected into an integral lithium battery energy storage module 2, and the integral installation and transportation of the lithium battery energy storage module 2 are more convenient.
In this embodiment, as shown in fig. 1 to 3, the batten 70 includes a straight batten 71 and a special-shaped batten 72, and when the outer surfaces of two adjacent lithium battery energy storage modules 1 are located in the same plane, the straight batten 71 is used for connection, as shown in fig. 2; when the outer surfaces of two adjacent lithium battery energy storage modules 1 are respectively located in two different upper and lower planes, the special-shaped battens 72 are used for connection and fixation, as shown in fig. 1 and 3.
Specifically, as shown in fig. 1 to 3, fig. 1 shows a 7-string 5-parallel single-head bipolar ear soft-packaged lithium battery cell formed by connecting and assembling a parallel copper sheet 62, a straight-plate serial copper sheet 611 and a special-shaped pressing strip 72, fig. 2 shows an 8-string 5-parallel single-head bipolar ear soft-packaged lithium battery cell formed by connecting and assembling a parallel copper sheet 62, a straight-plate serial copper sheet 611, a folded plate serial copper sheet 612, a straight-shaped pressing strip 71 and a special-shaped pressing strip 72, and fig. 3 shows an assembly diagram of an 8-string single-head bipolar ear soft-packaged lithium battery cell module and a 7-string single-head bipolar ear soft-packaged lithium battery cell module formed by connecting and assembling a parallel copper sheet 62, a straight-plate serial copper sheet 611, a folded plate serial copper sheet 612, a straight-shaped pressing strip 71 and a special-shaped pressing strip 72.
In this embodiment, as shown in fig. 8 to 10, the electrically connected copper sheet 60, that is, the series copper sheet 61 and the parallel copper sheet 62, are preferably punched from red copper sheets having a thickness of 0.5mm to 2mm, and in some specific embodiments, the electrically connected copper sheet 60, that is, the series copper sheet 61 and the parallel copper sheet 62, may have a thickness of 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, or the like. The electrical connection copper sheet 60 is manufactured by stamping the red copper sheet with the thickness of 0.5-2 mm, so that the overall thickness of the manufactured and formed electrical connection copper sheet 60 is smaller, the electrical connection copper sheet 60 is easy to deform in the installation process, the plane attachment degree of the electrical connection copper sheet 60 can be adjusted according to the flatness of an assembly plane during the assembly, the defect of poor flatness of a mounting surface of the lithium battery energy storage module 2 due to the problem of machining tolerance precision in the assembly process can be overcome, and the sufficient electrical contact area between the lithium battery energy storage modules 1 is ensured, so that the resistance of each electrical connection position of the lithium battery energy storage module 2 is reduced, and heating is reduced; and, stamping the fifth connecting hole 63 on the red copper sheet can complete the processing and manufacturing of the electric connecting sheet, the processing technology is simple, and the cost is relatively low.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A lithium battery energy storage module, comprising:
a battery cell;
the battery cell bracket is used for installing and fixing the battery cell, the battery cell bracket is provided with a first installation surface and a second installation surface which are oppositely arranged and used for installing the battery cell, the end part of the battery cell bracket extends towards the direction deviating from the first installation surface/the second installation surface to form a tab fixing part, the tab of the battery cell installed in the first installation surface extends out of the first installation surface and is fixed on the upper surface of the tab fixing part, and the tab of the battery cell installed in the second installation surface extends out of the second installation surface and is fixed on the lower surface of the tab fixing part;
the bus bar is used for electrically connecting all the battery cells arranged on the battery cell support, the bus bar comprises a first bus plate, a second bus plate and a connecting plate, the first bus plate and the connecting plate are arranged in parallel, the connecting plate is connected between the adjacent ends of the first bus plate and the second bus plate, the first bus plate is welded with the lugs of the battery cells arranged in the first mounting surface, the second bus plate is welded with the lugs of the battery cells arranged in the second mounting surface, and the connecting plate is fixedly connected with the lug fixing part;
the first bus plate cover is arranged on the upper surface of the lug of the battery cell installed in the first installation surface, and the second bus plate cover is arranged on the lower surface of the lug of the battery cell installed in the second installation surface; the cross sectional areas of the first bus plate and the second bus plate are larger than or equal to the cross sectional area of the corresponding tab;
the end part of the tab fixing part, which is away from the first mounting surface/the second mounting surface, is provided with a plurality of first connecting holes, the connecting plate is provided with a plurality of second connecting holes corresponding to the first connecting holes, the connecting plate is fixedly connected with the tab fixing part through a first fastening piece, and one end of the first fastening piece penetrates out of the second connecting holes and is then fixed in the corresponding first connecting holes;
the lithium battery energy storage module further comprises an upper protection cover plate and a lower protection cover plate, wherein the upper protection cover plate is used for protecting the battery cell, the upper protection cover plate is covered above the first installation surface and surrounds the battery cell support to form a first installation space, the lower protection cover plate is covered below the second installation surface and surrounds the battery cell support to form a second installation space, and the battery cell is packaged in the first installation space and/or the second installation space.
2. The lithium battery energy storage module of claim 1, wherein the cell support is a plastic support and the buss bars are copper buss bars.
3. The lithium battery energy storage module is characterized by comprising a plurality of the lithium battery energy storage modules according to claim 1 or 2 and a plurality of electric connection copper sheets for electrically connecting the lithium battery energy storage modules, wherein the lithium battery energy storage modules are stacked up and down or left and right, and the electric connection copper sheets are fixedly connected with the adjacent bus bars on the lithium battery energy storage modules respectively.
4. The lithium battery energy storage module according to claim 3, wherein the electrically connected copper sheets include a plurality of series copper sheets for connecting each of the lithium battery energy storage modules in series and a plurality of parallel copper sheets for connecting each of the lithium battery energy storage modules in parallel, each of the series copper sheets and each of the parallel copper sheets being fixedly connected with the connecting plate of each of the bus bars by a second fastener.
5. The lithium battery energy storage module according to claim 4, wherein the series copper sheet comprises a straight-plate series copper sheet and a folded-plate series copper sheet, and the lithium battery energy storage module comprises a first energy storage module assembly and a second energy storage module assembly which are respectively composed of a plurality of the lithium battery energy storage modules;
the bus bars of the first energy storage module are arranged in the same plane, the bus bars of the second energy storage module are arranged in the same plane, and the parallel copper sheet and the straight plate series copper sheet are respectively connected with the bus bars in the same plane;
the first energy storage die assembly is provided with the plane of busbar with the plane of second energy storage die assembly is provided with the busbar sets up relatively, folded plate series connection copper sheet include parallel arrangement's first straight plate portion, second straight plate portion and connect in first straight plate portion with connecting portion between the adjacent tip of second straight plate portion, first straight plate portion with busbar on the first energy storage die assembly is connected, second straight plate portion with on the second energy storage die assembly busbar is connected.
6. The lithium battery energy storage module according to claim 3, further comprising a plurality of battens for assembling and connecting each lithium battery energy storage module, wherein each batten is respectively connected with each cell support to connect and assemble each lithium battery energy storage module together.
7. The lithium battery energy storage module according to claim 3, wherein the electrical connection copper sheet is punched from a red copper sheet with a thickness of 0.5 mm-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140388.8A CN109904378B (en) | 2019-02-26 | 2019-02-26 | Lithium battery energy storage module and lithium battery energy storage module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140388.8A CN109904378B (en) | 2019-02-26 | 2019-02-26 | Lithium battery energy storage module and lithium battery energy storage module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109904378A CN109904378A (en) | 2019-06-18 |
| CN109904378B true CN109904378B (en) | 2024-04-05 |
Family
ID=66945341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910140388.8A Active CN109904378B (en) | 2019-02-26 | 2019-02-26 | Lithium battery energy storage module and lithium battery energy storage module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109904378B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649198B (en) * | 2019-09-27 | 2022-09-23 | 联动天翼新能源有限公司 | General module of lithium cell package and battery package |
| CN110739422B (en) * | 2019-09-29 | 2024-09-06 | 厦门新能达科技有限公司 | Battery cell support group and energy storage device packaging piece comprising same |
| CN110931675A (en) * | 2019-10-25 | 2020-03-27 | 杭州乾代科技有限公司 | Lithium battery pack with active temperature control function |
| US20230344060A1 (en) * | 2020-04-01 | 2023-10-26 | Tvs Motor Company Limited | A battery block |
| CN111725470B (en) * | 2020-06-10 | 2023-01-13 | 华富(江苏)锂电新技术有限公司 | Series-connection assembled soft-package lithium battery system for electric wheelchair |
| CN112531275A (en) * | 2020-12-23 | 2021-03-19 | 湖北亿纬动力有限公司 | Energy storage module |
| CN113517520A (en) * | 2021-07-19 | 2021-10-19 | 恒大新能源技术(深圳)有限公司 | Electricity core subassembly and battery package |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452933A (en) * | 2017-06-30 | 2017-12-08 | 多氟多（焦作）新能源科技有限公司 | A kind of soft package lithium battery module and insulation assembly and power module |
| CN207320245U (en) * | 2017-08-24 | 2018-05-04 | 多氟多（焦作）新能源科技有限公司 | A kind of soft package lithium battery module |
| CN209607828U (en) * | 2019-02-26 | 2019-11-08 | 信义储能微电网研究院(东莞)有限公司 | Lithium battery energy storage battery module and lithium battery energy storage battery mould group |
-
2019
- 2019-02-26 CN CN201910140388.8A patent/CN109904378B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452933A (en) * | 2017-06-30 | 2017-12-08 | 多氟多（焦作）新能源科技有限公司 | A kind of soft package lithium battery module and insulation assembly and power module |
| CN207320245U (en) * | 2017-08-24 | 2018-05-04 | 多氟多（焦作）新能源科技有限公司 | A kind of soft package lithium battery module |
| CN209607828U (en) * | 2019-02-26 | 2019-11-08 | 信义储能微电网研究院(东莞)有限公司 | Lithium battery energy storage battery module and lithium battery energy storage battery mould group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109904378A (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109904378B (en) | Lithium battery energy storage module and lithium battery energy storage module | |
| CN106058112B (en) | Cylindrical battery module | |
| CN214477697U (en) | Battery module and battery pack | |
| CN216597893U (en) | Laminate polymer battery core module and laminate polymer battery | |
| CN218039705U (en) | Battery pack with CCS assembly | |
| CN109742304A (en) | A kind of power battery module and electric vehicle | |
| CN111354882A (en) | Lithium ion battery pack | |
| CN215731862U (en) | Lithium ion battery module of integrated BMS and battery pack thereof | |
| CN214477761U (en) | Battery module and battery pack | |
| CN214280152U (en) | Battery module and energy storage device | |
| CN214505696U (en) | Battery module for vehicle | |
| CN108134038B (en) | Soft package lithium ion battery module and electric automobile | |
| CN210040357U (en) | Battery module and battery pack | |
| CN210040348U (en) | Battery module and power battery | |
| CN111370611A (en) | Power battery module | |
| CN114142139B (en) | Composite bipolar battery module and battery pack | |
| CN110635083A (en) | Rapid heating battery module | |
| CN115241612A (en) | Battery module and battery pack | |
| CN210429922U (en) | Battery module structure of electric vehicle | |
| CN214068788U (en) | Battery module of vehicle and vehicle | |
| CN215220945U (en) | Battery module | |
| CN213782169U (en) | Heat conduction bonding structure of battery box and module for forklift | |
| CN220065890U (en) | Battery pack and electric vehicle | |
| CN218919156U (en) | Battery pack and vehicle with same | |
| CN218896703U (en) | Water-cooling plate and battery pack with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |