CN113540636A - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
- Publication number
- CN113540636A CN113540636A CN202110618657.4A CN202110618657A CN113540636A CN 113540636 A CN113540636 A CN 113540636A CN 202110618657 A CN202110618657 A CN 202110618657A CN 113540636 A CN113540636 A CN 113540636A
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- battery
- plate
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- battery module
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- 238000003780 insertion Methods 0.000 claims description 50
- 230000037431 insertion Effects 0.000 claims description 50
- 238000009434 installation Methods 0.000 claims description 14
- 239000000565 sealant Substances 0.000 claims description 3
- 241000274582 Pycnanthus angolensis Species 0.000 description 7
- 239000011087 paperboard Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004382 potting Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The application relates to the technical field of batteries, and discloses a battery module and battery package, the battery module includes the mounting panel of two relative settings, is provided with insulating picture peg along the direction of arranging of battery cell between the mounting panel for support in the direction of arranging of battery cell and hold between battery cell and box. Therefore, the battery module of this application embodiment can directly be assembled in the box of battery package, can resist the bulging force of battery cell by insulating picture peg to simplify structure and assembly, and, the reduction of battery package inner structure helps improving the utilization ratio of inner space, thereby improves the volume energy density of battery package. The battery pack including the battery module also has the advantages.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a module and a battery pack.
Background
The power battery is used as a main power source of the electric automobile, how to efficiently utilize the limited space and improve the energy density is a key for meeting the long-term endurance requirement of the new energy electric automobile. And at present, the battery package majority constitutes electric core module with a plurality of battery cells, put into battery box with a plurality of electric core modules and form the battery package again, in this scheme, when a plurality of battery cells assemble into electric core module, need set up the end plate at both ends and carry out pretension fixed to the battery cell in the module, form the module, realize the module equipment of battery package from this, but this kind of assembly scheme battery package internals is various, not only the assembly is complicated, a plurality of electric core modules encapsulate when the battery box, the structure (like the end plate) for assembling into the module still occupies great battery box inner space, it is lower to volume space utilization, under established structure, it is difficult to high-efficiently utilize battery package inner space, the volume energy density's of battery optimization space is little, the degree of difficulty is big.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a battery module, can support a plurality of battery cells effectively to simplify the structure, effectively improve the inner space utilization of battery box, thereby improve the long-pending energy density of battery inclusion.
The application also provides a battery pack comprising the battery module.
According to this application first aspect embodiment's battery module for with the box equipment form battery package, battery module includes:
a plurality of unit cells;
the single batteries are arranged between the mounting plates in rows;
and the insulating plugboard is arranged between the mounting plates along the arrangement direction of the single batteries, and is used for supporting the single batteries in the arrangement direction of the single batteries.
The battery module of this application first aspect embodiment has following beneficial effect at least: a plurality of battery cells set up between the mounting panel in rows, realize the location of battery cell lateral part, insulating picture peg is used for supporting in battery cell's the direction of arranging, realizes battery cell's pretension installation, the equipment of the battery cell of being convenient for to can save the end plate in the conventional battery module, help improving the utilization ratio of battery package inner space, thereby improve volume energy density.
According to some embodiments of the present application, at least one of two ends of the mounting plate in the arrangement direction of the unit cells is provided with the insulating insertion plate; or the insulating insertion plates are arranged between the single batteries at any one or more positions; or at least one end of two ends of the single batteries in the arrangement direction between the mounting plates and at any one or more positions between the single batteries are provided with the insulating inserting plates. According to some embodiments of the application, the mounting plate is provided with a plug board slot for inserting the insulating plug board, and the insulating plug board is inserted into the plug board slot.
According to some embodiments of the present application, the board slot includes a pair of slots with opposite openings, each slot is disposed on two of the mounting plates, and the edge of the insulating board is inserted into the slot.
According to some embodiments of the present application, the insulating insert plate is provided with bosses corresponding to one side or both sides of the arrangement direction of the unit cells.
According to some embodiments of the present application, a plurality of slots are formed between the mounting plates along the arrangement direction of the single batteries, and each single battery is respectively disposed in each slot.
According to some embodiments of the application, the mounting panel includes plate body and parting bead, the parting bead is followed monomer battery's the direction interval of arranging set up in one side of the mutual orientation of plate body, inject the recess between the parting bead, two the mounting panel the position of recess corresponds each other, and relative two the recess forms and is used for fixing a position singly monomer battery's slot.
According to some embodiments of the application, the mounting panel still includes the collet, the collet corresponds to the position setting of cell's bottom, and certainly the inner wall of plate body inwards extends, the collet is used for the bearing to be located in the slot cell's bottom.
According to the battery pack of the embodiment of the second aspect of the present application, comprising:
the box body comprises a lower box body and a box cover, the lower box body is provided with an installation cavity, and the box cover covers the upper part of the installation cavity;
the battery module of this application first aspect embodiment, the battery module is arranged in the installation cavity, the mounting panel connect in the box, insulating picture peg is used for supporting on the direction of arranging of battery cell.
The battery pack of the embodiment of the second aspect of the present application has at least the following beneficial effects: the battery module sets up in the installation cavity of box, realizes the fixed of battery module and the transmission of power through being connected of mounting panel and box to support and hold the battery cell in the direction of arranging of battery cell through insulating picture peg, transmit the bulging force of battery cell to the battery box, saved the structure (like the end plate) that traditional battery package assembled the battery cell into the module from this, realized the structure simplification of battery package, thereby simplify the assembly. In addition, the reduction of the structural part can provide more internal installation spaces of the box body, and the utilization rate of the internal space is improved, so that the volume energy density of the battery is improved.
According to some embodiments of the application, the mounting panel is followed the at least one end at both ends of the direction of arranging of battery cell is provided with insulating picture peg, just insulating picture peg is located battery cell with between the inner wall of box down, insulating picture peg with the clearance has down between the inner wall of box, be provided with the casting glue in the clearance.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic perspective view of a battery pack according to an embodiment of the present application;
fig. 2 is an exploded view of a portion of a battery pack according to an embodiment of the present application;
fig. 3 is an exploded view illustrating a part of a battery module according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a battery module according to an embodiment of the present application, in which a single battery is omitted;
FIG. 5 is a schematic view of a mounting plate according to another embodiment of the present application;
fig. 6 is an exploded view of a mounting plate, an insulating insert plate and a unit cell according to an embodiment of the present application;
fig. 7 is a schematic structural view of an insulating interposer according to an embodiment of the present application;
FIG. 8 is a schematic structural view of a mounting plate in another embodiment of the present application;
FIG. 9 is an enlarged view of a portion of FIG. 8 taken at I;
fig. 10 is a schematic cross-sectional view of a battery pack according to an embodiment of the present application, taken along the arrangement direction of unit cells;
fig. 11 is a schematic cross-sectional view of a battery pack according to an embodiment of the present application, taken perpendicular to the arrangement direction of unit cells.
Reference numerals:
a cell 100, a cell top 120, a cell bottom 130, a cell side 140;
the battery module comprises a battery module 200, slots 210, a bus bar 220, a mounting plate 230, a plate body 231, a partition bar 232, a bottom support 233, a first mounting platform 234, a groove 237, a board inserting slot 240, a connecting plate 250, an insulating board 260, a boss 261, a blocking shoulder 270 and a 'U' -shaped foam 280;
the box body 300, the box cover 310, the lower box body 320, the bottom plate 321, the side box plate 322, the flow channel 323, the installation cavity 330, the sealing element 340 and the positioning table 350;
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, several means are one or more, and the above, below, within and the like are understood to include the present numbers. The description to first, second, etc. is only for the purpose of distinguishing technical features, and should not be interpreted as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
At present, the composition structure of most power batteries is mainly as follows: bear the weight of battery cell through electric core frame to a plurality of battery cells constitute the electric core group, make up a plurality of electric core groups into electric core module again, connect the end plate at electric core module both ends, both sides set up the side boxboard, in order to realize the load, electric core module top sets up electric division board, the busbar sets up on electric division board and connects the pencil, upper cover lid is located electric division board upper portion and is connected in end plate, side boxboard etc. from this constitution battery package. The internal components of the battery box are various, the assembly is complex, the battery box also occupies a large internal space of the battery box, the volume space utilization rate is low, the optimized space is small, and the difficulty is high. Compared with the prior art, the battery module and the battery pack of this application embodiment can fix a position battery cell through the mounting panel to can adopt battery cell and mounting panel lug connection battery pack box body to form the structure of battery pack (CTP), compare in above-mentioned mode, can save some structures, thereby release more interior installation space and in order to supply battery cell's installation, help improving interior space utilization ratio or reduce battery size, and simplify the assembly, can reduce cost to a certain extent.
Fig. 1 is a schematic perspective view illustrating a battery pack according to an embodiment of the present disclosure, and fig. 2 is a schematic partially exploded view illustrating the battery pack according to the embodiment of the present disclosure, and referring to fig. 1 and fig. 2, the battery pack according to the embodiment of the present disclosure, including a case 300 and a battery module 200, includes a plurality of unit batteries 100 and a mounting plate 230 for positioning and fixing each unit battery 100. The unit batteries 100 are arranged in rows between the mounting plates 230. The case 300 includes a lower case 320 and a case cover 310, the lower case 320 includes a side case plate 322 and a bottom plate 321, the side case plate 322 and the bottom plate 321 enclose a mounting cavity 330, the battery module 200 is disposed in the mounting cavity 330, the mounting plate 230 is connected to the case, and the case cover 310 is covered on the upper portion of the mounting cavity 330 and detachably connected to the side case plate 322.
Fig. 3 is an exploded view illustrating a part of a battery module according to an embodiment of the present invention, fig. 4 is a schematic view illustrating a structure of the battery module according to an embodiment of the present invention without a unit cell, and referring to fig. 3 and 4, a battery module 200 according to an embodiment of the present invention includes two mounting plates 230 and a plurality of insulating insertion plates 260, which are oppositely disposed, and a plurality of unit cells 100 are disposed between the mounting plates 230 in a row. Fig. 5 is a schematic structural view of a mounting plate according to another embodiment of the present application, and fig. 6 is an exploded schematic view of the mounting plate, an insulating insert plate, and a single cell according to an embodiment of the present application, and referring to fig. 5 and 6, in a battery module according to some embodiments, an insulating insert plate 260 may be disposed at least one of two ends of the mounting plate 230 in an arrangement direction of the single cells 100, and an insulating insert plate 260 may be disposed at one end of the mounting plate 230 in the arrangement direction of the single cells 100; alternatively, the mounting plate 230 is provided with insulating insertion plates 260 at both ends thereof in the arrangement direction of the unit cells 100. The insulating insertion plate 260 is connected to the mounting plate 230, and after the battery module 200 is mounted in the case of the battery pack, the insulating insertion plate 260 located at the end of the mounting plate 230 is used to abut between the unit batteries 100 and the case 300 of the battery pack in the arrangement direction of the unit batteries 100. Therefore, the battery module 200 can be directly assembled in the case of the battery pack, the insulating insertion plate 260 can resist the expansion force of the unit batteries 100 and transmit the force to the case 300, the structural member for assembling the unit batteries 100 into the module is omitted, and thus the structure and the assembly are simplified, and the reduction of the structural member can provide more internal installation space of the case, which contributes to the improvement of the utilization rate of the internal space, and thus the volumetric energy density of the battery pack is improved.
In the battery module according to some embodiments, the insulating insertion plates 260 are disposed between the single batteries 100 at any one or more positions, and the specific positions of the insulating insertion plates 260 may be configured according to actual assembly requirements, for example: an insulating insert plate 260 is disposed between the unit batteries 100 located at the middle of the mounting plate 230, or one insulating insert plate 260 is disposed between every certain number of unit batteries 100. The insulating insertion plate 260 can be abutted between the single batteries 100 in the arrangement direction of the single batteries 100, can have a certain pre-tightening effect on the single batteries 100, can resist the expansion force of the single batteries 100 along the arrangement direction to a certain extent, and is suitable for battery packs with a large number of the single batteries 100 and a large arrangement length.
In addition, in some other embodiments of the battery module, at least one of two ends of the mounting plate 230 along the arrangement direction of the unit batteries 100 is provided with the insulating insertion plate 260, and the insulating insertion plates 260 are also provided between the unit batteries 100 at any one or more positions, similarly to the above embodiments, the expansion force of the unit batteries 100 along the arrangement direction can be resisted by the insulating insertion plates 260 provided at the ends of the mounting plate 230 and transmitted to the case 300, and the insulating insertion plates 260 provided between the unit batteries 100 can be resisted between the unit batteries 100 in the arrangement direction of the unit batteries 100, and can have a certain pre-tightening effect on the unit batteries 100, thereby facilitating the transmission of the expansion force in the arrangement direction of the unit batteries and improving the stability of the battery module.
In the above embodiment, the insulating insertion plate 260 may have a boss on one side or both sides of the arrangement direction of the single batteries 100, and the boss may increase the thickness of the insulating insertion plate 260 along the arrangement direction of the single batteries 100, so as to better support and transmit the force of the single batteries. In specific implementation, the height of the boss protrusion can be reasonably configured according to actual assembly requirements (such as assembly clearance). Fig. 5 is a schematic structural diagram of a mounting plate according to another embodiment of the present application, and referring to fig. 5, in comparison with the above-mentioned embodiment, in the battery module 200 according to this embodiment, one end of the end portions of two mounting plates 230 may further be provided with a connecting plate 250, and the other end is provided with an insulating insertion plate 260 according to the above-mentioned embodiment, wherein the connecting plate 250 may be connected to the mounting plate 230 in an insertion manner, or detachably connected to the mounting plate 230 by a connecting member, or integrally connected to the mounting plate 230 by welding, riveting, or the like, or the connecting plate 250 and the mounting plate 230 are integrally formed by an integral molding process.
Fig. 6 is an exploded schematic view of a mounting plate, an insulating insertion plate, and a single battery according to an embodiment of the present disclosure, fig. 7 is a schematic structural view of the insulating insertion plate according to an embodiment of the present disclosure, referring to fig. 6 and fig. 7, in a battery module 200 according to some embodiments, two ends of the mounting plate 230 along an arrangement direction of the single battery 100 are respectively provided with an insulating insertion plate 260, and two sides of the insulating insertion plate 260 can be abutted between the single battery 100 and a case 300 located at the end, so that an expansion force of a battery assembly formed by a plurality of single batteries 100 along the arrangement direction of the single battery 100 can be directly transmitted to the case 300 through the insulating insertion plate 260, that is, a manner of directly transmitting a force to the case 300 by the single battery 100 is achieved.
Among the conventional battery module, there is not location structure between the battery cell, thereby need carry out the pretension from the battery both ends through the end plate at both ends and realize battery cell's fixed, compare with conventional battery module, and the battery module of this application, the bulging force of the orientation of arranging of battery cell 100 can directly transmit to box 300 through insulating picture peg 260 on, resist the bulging force through box 300, saved the end plate and the connection structure that tightens in advance, simplified the assembly.
After the battery module 200 is installed in the case 300, a certain gap exists between the single batteries 100 at the two ends of the mounting plate 230 and the case plate 322 on the side of the case 300, then the insulating insertion plate 260 is inserted between the two ends of the mounting plate 230 and the case 300, the insulating insertion plate 260 can further tightly push and position the single batteries 100, and the insulating insertion plate 260 and the inner wall of the case 300 can directly abut against each other, so that the insulating insertion plate 260 can abut against between the single batteries 100 and the inner wall of the case 300, and the force transmission in the arrangement direction of the single batteries is realized. Or, a certain gap may be formed between the insulating insertion plate 260 and the inner wall of the box body 300, and a potting adhesive may be further disposed in the gap, and the potting adhesive may absorb the tolerance of the arrangement direction of the single cells and transmit the expansion force to the box body 300 through the potting adhesive. A 'U' -shaped foam 280 can be arranged between the insulating flashboard 260 and the side box board 322 of the box body 300 to form a glue groove in an enclosing mode, pouring sealant is injected into the glue groove, and the injection amount of the pouring sealant can be adjusted according to the distance between the insulating flashboard 260 and the side box board 322 of the box body. In addition, in order to make the insulating insertion plate 260 have a better force transmission function, a boss 261 may be disposed in the middle of one side of the insulating insertion plate 260 facing the side box board 322 of the box 300, so as to more stably support the side box board 322 of the box 300.
Similarly, according to the internal structure of the battery pack and the actual installation requirement, the insulating insertion plate 260 may be only disposed at one end of the mounting plate 230 along the arrangement direction of the single batteries 100, and the other end of the mounting plate 230 abuts against the side box plate 322 of the box 300, so that the expansion force in the arrangement direction of the single batteries 100 can be transmitted to the box 300 through the mounting plate 230 and the insulating insertion plate 260, and the tolerance absorption can be achieved at one side of the insulating insertion plate 260. In addition, when the number of the single batteries 100 to be assembled is large and the arrangement distance is long, a plurality of pairs of mounting plates 230 can be arranged to fix the single batteries 100 to be assembled, a pair of adjacent mounting plates 230 can be mutually abutted, and an insulating insertion plate 260 is arranged at the abutted position, so that the single batteries 100 at the abutted position of the mounting plates 230 can be abutted through the insulating insertion plate 260, and the mounting plates 230 and the single batteries can be further fastened. Similarly, according to the fastening requirements between the single batteries 100, an insulating insertion plate 260 may also be disposed between the single batteries 100 at any one or more positions of the mounting plate 230, so as to further fasten the single batteries 100.
According to the above embodiment, fig. 8 is a schematic structural diagram of a mounting plate according to another embodiment of the present application, fig. 9 is a partial enlarged view of a portion I in fig. 8, and referring to fig. 8 and 9, an insert plate slot 240 may be provided at a position on the mounting plate 230 where an insulating insert plate 260 is required to be provided, so that the insulating insert plate 260 may be connected to the mounting plate 230 in a plugging manner, which is simple and facilitates quick assembly. Specifically, referring to fig. 9, taking the scheme that the end portion of the mounting plate 230 is provided with the insulating insertion plate 260 as an example, the two mounting plates 230 are opposite in position and have slots with opposite openings to form the insertion plate slot 240, and the two slots are respectively used for receiving the two corresponding side edges of the insulating insertion plate 260, so that the insertion mounting can be realized by inserting the edges of the insulating insertion plate 260 corresponding to the two slots into the slots.
Fig. 8 is a schematic structural diagram of a mounting plate according to another embodiment of the present disclosure, and fig. 9 is a partial enlarged view of a portion I in fig. 8, referring to fig. 8 and 9, in the above embodiment, a plurality of slots 210 are formed between the mounting plates 230 along the arrangement direction of the single batteries 100, and each single battery 100 is respectively disposed in each slot 210. The positioning and installation of the single batteries 100 are realized through the slots 210, and the fixing frame of each single battery 100 is not required to be additionally arranged, so that the internal space of the battery module can be saved to a certain extent.
In some embodiments, the mutually facing sides of the mounting plates 230 are provided with a plurality of grooves 237 along the arrangement direction of the single batteries 100, the positions of the grooves 237 on the two mounting plates 230 correspond to each other, and the two corresponding grooves 237 form the slot 210 for accommodating the single battery 100 and limiting the side portions of the two sides of the single battery 100. The enclosure frame formed by combining the two mounting plates 230 is open on both sides of the top 120 and the bottom of the single battery, so that the top 120 of the single battery can be exposed outside the slot 210 for electrical connection, and the bottom 130 of the single battery can be connected with the bottom plate 321 of the box 300.
The two mounting plates 230 may be formed in a split structure, and when assembling, the two mounting plates 230 may be clamped at both sides of the unit batteries 100, so that the unit batteries 100 are inserted into the slots 210, and then the insulating insertion plates 260 are mounted, and then are inserted into the case 300. The two mounting plates 230 may also be connected as a unit by a connecting plate, and the unit cell 100 is inserted into the slot 210 from the upper or lower side, and then the insulating insertion plate 260 is mounted. During actual assembly, the assembly mode can be reasonably adjusted according to the specific structure of the mounting plate 230 and the fixing mode of the single battery 100 and the mounting plate 230.
In some embodiments, referring to fig. 8 and 9, each mounting plate 230 includes a plate 231 and spacers 232, the spacers 232 are disposed at intervals on one side of the plate 231 facing each other along the arrangement direction of the unit cells 100, the bottom of the mounting plate 230 corresponding to two sides of the unit cells 100 is provided with a bottom support 233, and the bottom support 233 extends toward the inner side of the plate 231 to below the spacers 232, so as to support the bottom 130 of the unit cell from below the side 140 of the unit cell. The mounting plate 230 is provided with a first mounting platform 234 corresponding to the top 120 of the single battery, the first mounting platform 234 extends towards the inner side of the plate 231 to the upper side of the division bars 232, so that the top 120 of the single battery can be limited from the upper side of the side 140 of the single battery, and therefore, the adjacent division bars 232 and the first mounting platform 234 and the bottom support 233 together enclose the groove 237 for limiting the side 140, the top 120 and the bottom 130 of the single battery. During assembly, the single battery 100 can be positioned on the two mounting plates 230 by only making the grooves 237 on the two mounting plates 230 correspond to the two sides of the single battery 100 and then clamping the mounting plates 230 on the two sides of the single battery 100, and then the single battery 100 is integrally placed in the battery pack box. In this embodiment, the two mounting plates 230 are separate structures and can be respectively mounted from two sides of the single battery 100, and the top and the bottom of two sides of the single battery 100 are limited in the groove 237.
According to some embodiments of the present disclosure, referring to fig. 2, 10 and 11, the outer wall of the mounting plate 230 facing away from each other is provided with a shoulder 270 protruding outwards, and the shoulder 270 may be a long strip structure extending along the arrangement direction of the single battery 100 or a plurality of convex structures arranged along the arrangement direction of the single battery 100. The side box plate 322 of the box body 300 is provided with the positioning table 350, after the battery module 200 is arranged in the box body 300, the shoulder 270 is arranged on the positioning table 350, and the outer side edge of the shoulder 270 abuts against the inner wall of the side box plate 322, so that the single battery 100 realizes the transmission of acceleration force to the box body 300 through the outer wall of the mounting plate 230 and the shoulder 270, and the mode that the single battery 100 directly transmits force to the box body 300 is realized.
In addition, after the bottoms 130 of the single batteries are connected with the bottom of the case 300, the bending and twisting of the battery module 200 along the length direction are limited by the bottom plate 321 of the case 300, so that the section inertia moment of the battery module 200 in the length direction is increased, and the problem of small mode of the battery module in the length direction is effectively solved.
In some embodiments, the mounting plate 230 is further provided with a bus bar 220 at a position corresponding to each battery cell 100, for example, the bus bar 220 may be connected to the first mounting platform 234, and the bus bar 220 is electrically connected to the pole of the battery cell 100 in the slot 210. From this, the battery package still can save the electric isolation plate that is used for configurating the busbar in the conventional structure to further reduce battery package inner structure, realize the simplification of structure and assembly, and can reduce occupation of inner space to a certain extent, help improving the inner space utilization of battery package.
The battery pack of the above embodiment further includes a data acquisition system 400, a battery control unit 500, and a distribution box 600, where the data acquisition system 400 is electrically connected to the single battery 100 to realize the relevant data acquisition of the single battery 100, the battery control unit 500 is electrically connected to the data acquisition system 400 and the distribution box 600 to realize the overall regulation and control of the battery, and the distribution box 600 is further connected to a connector (including a high-voltage connection machine, a low-voltage connector, etc.) for external connection. The case 300 is further provided at one end thereof in the arrangement direction of the unit cells 100 with a cavity for receiving the distribution box 600, which is separated from the mounting cavity 330 for mounting the battery module 200 by a side case 322. In the battery pack of the embodiment of the application, the data acquisition system 400, the battery control unit 500 and the power distribution box 600 which are conventionally applied to the battery pack in the known technology can be adopted, and the control principle thereof is not described herein again.
In the battery pack of some embodiments, the lower case 320 is provided with two mounting cavities 330, and the battery modules 200 are mounted in the mounting cavities 330 respectively in the assembly manner of the above-described embodiments, so as to form a battery pack having two sets of battery modules 200. The lower box body 320 may be formed by combining and connecting a plurality of side box plates 322, and may be formed into a whole by an integral forming process. In addition, a sealing member 340 may be disposed between the cover 310 and the lower case 320, so as to effectively isolate external moisture.
In the battery pack according to some embodiments, the flow channel 323 for introducing the cooling liquid is disposed on the bottom plate 321 or inside the bottom plate 321, so that the cooling liquid cools the bottom plate 321, and the single batteries 100 connected to the bottom plate 321 can be cooled at the same time, so that the heat transfer of the single batteries 100 to the case 300 is directly achieved, an intermediate heat transfer member is omitted, not only is efficient heat transfer achieved, but also more internal spaces can be released, and thus the space utilization rate inside the battery is improved.
By the aforesaid, the battery package of this application embodiment has realized the assembly of directly biography power of battery cell with the box, compares with the scheme that forms the battery through the equipment of conventional electric core module, has reduced a plurality of structures, has for example reduced electrical isolation board, electric core module end plate and module side boxboard, has simplified assembly process from this, helps reduce cost. And, the reduction of structure can release more inner space, consequently, can arrange more battery cells under the unchangeable condition of volume, improves battery energy density, perhaps under the unchangeable condition of battery cell quantity, reduces the whole volume of battery to envelope requirement when satisfying the in-service use. The battery pack changes the force transmission mode of the single battery, effectively improves the mechanical property, is easy to assemble, and can reduce the cost while meeting the functional and safety requirements.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (10)
1. Battery module, its characterized in that for with the box equipment form the battery package, battery module includes:
a plurality of unit cells;
the single batteries are arranged between the mounting plates in rows;
and the insulating plugboard is arranged between the mounting plates along the arrangement direction of the single batteries, and is used for supporting the single batteries in the arrangement direction of the single batteries.
2. The battery module according to claim 1, wherein at least one of both ends of the mounting plate in the arrangement direction of the unit cells is provided with the insulating insertion plate;
or the insulating insertion plates are arranged between the single batteries at any one or more positions;
or at least one end of two ends of the single batteries in the arrangement direction between the mounting plates and at any one or more positions between the single batteries are provided with the insulating inserting plates.
3. The battery module according to claim 1, wherein the mounting plate is provided with a socket slot for inserting the insulating socket, and the insulating socket is inserted into the socket slot.
4. The battery module as claimed in claim 3, wherein the board insertion slot comprises a pair of slots with opposite openings, each slot is respectively disposed on the two mounting plates, and the edge of the insulating board is inserted into the slot.
5. The battery module according to claim 1, wherein the insulating insert plate is provided with bosses at one side or both sides corresponding to the arrangement direction of the unit cells.
6. The battery module according to any one of claims 1 to 5, wherein a plurality of slots are formed between the mounting plates along the arrangement direction of the single cells, and each single cell is respectively disposed in each slot.
7. The battery module according to claim 6, wherein the mounting plates comprise plate bodies and division bars, the division bars are arranged on one sides of the plate bodies facing each other at intervals along the arrangement direction of the single batteries, a groove is defined between the division bars, the positions of the grooves of the two mounting plates correspond to each other, and the two opposite grooves form slots for positioning the single battery.
8. The battery module as set forth in claim 7, wherein the mounting plate further comprises a bottom support disposed at a position corresponding to the bottom of the battery cell and extending inwardly from the inner wall of the plate, the bottom support being configured to support the bottom of the battery cell in the slot.
9. A battery pack, comprising:
the box body comprises a lower box body and a box cover, the lower box body is provided with an installation cavity, and the box cover covers the upper part of the installation cavity;
the battery module according to any one of claims 1 to 8, wherein the battery module is disposed in the mounting cavity, the mounting plate is connected to the case, and the insulating insertion plate is used for supporting the single cells in the arrangement direction of the single cells.
10. The battery pack according to claim 9, wherein the insulating insertion plate is arranged at least one end of the mounting plate along both ends of the arrangement direction of the single batteries, the insulating insertion plate is arranged between the single batteries and the inner wall of the lower box body, a gap is formed between the insulating insertion plate and the inner wall of the lower box body, and a pouring sealant is arranged in the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/143879 WO2022193791A1 (en) | 2021-03-18 | 2021-12-31 | Battery module and battery pack |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021205627787 | 2021-03-18 | ||
| CN202120562778 | 2021-03-18 |
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| CN113540636A true CN113540636A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121238613.0U Active CN215451597U (en) | 2021-03-18 | 2021-06-03 | Enclose frame and battery package |
| CN202121236635.3U Active CN215451595U (en) | 2021-03-18 | 2021-06-03 | Enclose frame, enclose frame subassembly and battery package |
| CN202121236692.1U Active CN215451596U (en) | 2021-03-18 | 2021-06-03 | Battery module and battery pack |
| CN202110618657.4A Pending CN113540636A (en) | 2021-03-18 | 2021-06-03 | Battery module and battery pack |
| CN202110618625.4A Pending CN113540635A (en) | 2021-03-18 | 2021-06-03 | Enclose frame, enclose frame subassembly and battery package |
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| CN202121238613.0U Active CN215451597U (en) | 2021-03-18 | 2021-06-03 | Enclose frame and battery package |
| CN202121236635.3U Active CN215451595U (en) | 2021-03-18 | 2021-06-03 | Enclose frame, enclose frame subassembly and battery package |
| CN202121236692.1U Active CN215451596U (en) | 2021-03-18 | 2021-06-03 | Battery module and battery pack |
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| CN202110618625.4A Pending CN113540635A (en) | 2021-03-18 | 2021-06-03 | Enclose frame, enclose frame subassembly and battery package |
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| CN (5) | CN215451597U (en) |
| WO (3) | WO2022193793A1 (en) |
Cited By (1)
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|---|---|---|---|---|
| WO2022193791A1 (en) * | 2021-03-18 | 2022-09-22 | 欣旺达电动汽车电池有限公司 | Battery module and battery pack |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976454B (en) * | 2022-06-15 | 2023-12-05 | 欣旺达动力科技股份有限公司 | Power battery pack |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN215451597U (en) | 2022-01-07 |
| CN215451596U (en) | 2022-01-07 |
| WO2022193791A1 (en) | 2022-09-22 |
| WO2022193790A1 (en) | 2022-09-22 |
| WO2022193793A1 (en) | 2022-09-22 |
| CN113540635A (en) | 2021-10-22 |
| CN215451595U (en) | 2022-01-07 |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Applicant after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Applicant before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |