CN116525919A - Battery pack assembling method - Google Patents
Battery pack assembling method Download PDFInfo
- Publication number
- CN116525919A CN116525919A CN202310565867.0A CN202310565867A CN116525919A CN 116525919 A CN116525919 A CN 116525919A CN 202310565867 A CN202310565867 A CN 202310565867A CN 116525919 A CN116525919 A CN 116525919A
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- Prior art keywords
- bottom plate
- battery
- support
- cross beam
- plate
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000000779 smoke Substances 0.000 claims description 40
- 239000000443 aerosol Substances 0.000 claims description 14
- 239000012634 fragment Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 claims 2
- 238000012983 electrochemical energy storage Methods 0.000 abstract description 3
- 208000003464 asthenopia Diseases 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 17
- 239000007921 spray Substances 0.000 description 17
- 238000004146 energy storage Methods 0.000 description 12
- 238000003466 welding Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000003014 reinforcing effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
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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
Abstract
The invention relates to the technical field of electrochemical energy storage, and discloses an assembling method of a battery pack, which comprises the following assembling steps: the spring plate is clamped into the clamping groove and assembled to form an end plate; binding the battery cell group and the end plate together through the binding belt to form a group of battery modules; connecting the CCS component with the end face of the battery module; connecting a bottom plate of the battery box with the first cross beam and the second cross beam, and connecting an annular side plate with the bottom plate; the battery modules are placed between the first cross beam and the second cross beam through the mounting holes, the end face of the battery cell is connected with the bottom plate, and a plurality of groups of battery modules are placed on the bottom plate in sequence according to the mode; the first bracket connects the fixing piece with the adjacent fixing piece; the second sealing strip is perpendicular to the inner side surface of the bottom plate and the first sealing strip are perpendicular to the outer side surface of the bottom plate, and meanwhile, the CCS component is attached to the inner side surface of the upper cover of the battery box. The invention solves the problems of lower assembly efficiency and deviation of assembly positions caused by visual fatigue in the prior art, and is suitable for improving the assembly efficiency of the battery pack.
Description
Technical Field
The invention relates to the technical field of electrochemical energy storage, in particular to an assembling method of a battery pack.
Background
The battery PACK is an assembled battery, and components such as a battery core, a CCS component, an output electrode connecting sheet, a battery box and the like are combined and processed into a battery PACK through a battery PACK process.
However, in the actual assembly process, when part of the components are assembled by means of manual operation, the position relationship between the components is judged by means of manual operation, and when the visual fatigue of staff occurs, the assembly efficiency is low and the assembly position of the components is deviated.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an assembling method of a battery pack, which can enable all parts of the battery pack to be accurately and quickly placed in an assembling position during assembling and improve the assembling efficiency.
The technical scheme adopted by the invention is as follows:
an assembling method of a battery pack, comprising the following assembling steps:
s1: assembled end plate
The spring piece positioned on the output pole bracket is clamped into the clamping groove on the fixing piece, and the end plate is formed by assembly;
s2: assembled battery module
Bonding a plurality of electric cores together to form an electric core group, binding the electric core group and two end plates positioned at two ends of the electric core group together by passing a binding belt through a groove on a fixing piece to form a group of battery modules;
s3: assembling CCS components
Connecting the CCS component with the end face, close to the upper cover of the battery box, of the battery module;
s4: assembled battery box
Connecting a bottom plate of the battery box with the first cross beam and the second cross beam, connecting an annular side plate of the battery box with the bottom plate, connecting the annular side plate with the first sealing strip, and connecting the upper cover with the second sealing strip with an L-shaped cross section;
s5: assembled battery pack
The battery module is placed between the first beam and the second beam through the mounting hole on the end plate, the convex block on the second beam stretches into the accommodating cavity of the fixing piece, the end face of the battery core is connected with the bottom plate, and a plurality of groups of battery modules are sequentially placed on the bottom plate according to the mode;
the first bracket is used for connecting the fixing piece with the adjacent fixing piece, the first bracket, the fixing piece and the first cross beam are connected, the second bracket, the fixing piece and the first cross beam are connected with the first bracket through connecting rods, the first bracket, the fixing piece and the second cross beam are connected, and the second bracket, the fixing piece and the second cross beam are connected;
connecting the fire-fighting support with clamping posts on the first support and the second support through strip-shaped holes on the upper part of the fire-fighting support, connecting one end of an output electrode connecting piece connected with the battery core, one end of a collecting end connecting piece connected with the circuit board and a first U-shaped groove on the output electrode support, and connecting one end of a fuse serial piece connected with the output electrode connecting piece with the fuse and the fuse support;
the second sealing strip is perpendicular to the inner side surface of the bottom plate and the first sealing strip are perpendicular to the outer side surface of the bottom plate, and meanwhile, the CCS component is attached to the inner side surface of the upper cover of the battery box.
Compared with the prior art, the invention has the beneficial effects that:
1. the elastic sheet and the clamping groove are combined to ensure that the output electrode bracket and the fixing piece can be quickly disassembled and connected, so that the output electrode bracket is convenient to maintain and replace, the clamping groove can also provide a positioning function, and the output electrode bracket and the fixing piece can be conveniently and quickly assembled together;
2. the groove can provide a positioning function for the binding belt, so that the binding belt can rapidly bind the battery cell group with the end plate, and can prevent the binding belt from moving or falling off during binding, and the battery cell group and the end plate are ensured to be bound together all the time;
3. the mounting holes can assist in grabbing the battery module, the first cross beam and the second cross beam act together, a positioning function can be provided for the battery module when the battery module is placed in the battery box, the battery module is assisted to be placed in a designated position quickly, the bumps can provide a positioning function for the fixing pieces, the battery module is assisted to be placed in the battery box to be accurate in position, and the fixing pieces can be connected with the first cross beam or the second cross beam quickly and stably;
4. the first sealing strip can provide a positioning function for the second sealing strip, so that the upper cover is quickly and accurately connected with the annular side plate.
As a preferred embodiment of the invention, the fixing piece is provided with a first through groove penetrating through the upper end face and the lower end face of the fixing piece, the upper end face of the fixing piece is provided with a second U-shaped groove communicated with the first through groove, the first through groove is provided with a plurality of connecting parts connected with two opposite inner side walls of the first through groove, the output pole support is symmetrically provided with supporting parts which protrude along the width direction of the output pole support and can be simultaneously attached to the connecting parts and the second U-shaped groove, the accommodating cavity is formed by encircling the first through groove and the connecting parts, the mounting hole is positioned on the outer side face of the fixing piece and communicated with the accommodating cavity, the elastic sheet positioned on the output pole support is pressed, then the elastic sheet is clamped into the clamping groove, and the supporting parts are attached to the second U-shaped groove and the connecting parts.
In the scheme, before the elastic piece is clamped into the clamping groove, the elastic piece is pressed firstly, so that the elastic piece moves towards a central shaft close to the width direction of the output pole bracket, after the supporting part is attached to the connecting part and the second U-shaped groove, the elastic piece moves to the clamping groove along the length direction of the first through groove in the first through groove, the elastic piece is released, part of the elastic piece is clamped into the clamping groove, and part of the elastic piece is positioned between the output pole bracket and the second U-shaped groove; the elastic sheet is taken out from the clamping groove, and the part, between the output pole support and the second U-shaped groove, of the elastic sheet is pressed firstly, so that the elastic sheet moves towards the central shaft close to the width direction of the output pole support, the part, in the clamping groove, of the elastic sheet is clamped into the clamping groove, is withdrawn from the clamping groove, and then the output pole support is directly taken upwards, so that the output pole support and the fixing piece are detached.
The beneficial effect of this scheme: the first logical groove can alleviate the weight of mounting, and then reduce the weight of electric core mounting structure, connecting portion can strengthen the supporting strength of mounting, second U type groove and connecting portion combined action can provide the support for supporting portion, when going into the draw-in groove with the shell fragment card, supporting portion can assist output polar support quick and second U type groove to be connected, and then for the shell fragment alignment draw-in groove provides locate function, supplementary shell fragment quick card is gone into in the draw-in groove, second U type groove can also provide the direction for supporting portion when output polar support is connected with the mounting, supporting portion can make output polar support and first U type groove have the interval, can be convenient for operate the shell fragment, and then can make the shell fragment quick card go into the draw-in groove.
As a preferred embodiment of the invention, the output electrode support is provided with a plurality of first U-shaped grooves, the output electrode connecting sheet connected with the battery core electrode post and the collecting end connecting sheet connected with the circuit board are respectively placed on the first U-shaped grooves of one output electrode support, and the output electrode connecting sheet and the collecting end connecting sheet are respectively connected with the corresponding first U-shaped grooves.
The beneficial effect of this scheme: the output electrode connecting pieces and the collecting end connecting pieces can be simultaneously placed on the output electrode bracket through the plurality of first U-shaped grooves, and the assembly speed is improved.
As a preferred embodiment of the invention, the first cross beam is U-shaped, and the joint of the vertical part of the first cross beam and the bottom plate welds the first cross beam and the bottom plate together.
The beneficial effect of this scheme: the welding spot after the welding of the first cross beam and the bottom plate can be contained between the opposite surfaces of the two vertical parts of the first cross beam, and the welding spot generated by the welding of the first cross beam and the bottom plate can be prevented from scratching the outer surface of the battery module, so that the battery module is damaged.
As a preferred embodiment of the invention, the second cross beam is provided with a plurality of U-shaped second through grooves, and the second cross beam and the bottom plate are welded together at the positions of the second through grooves.
The beneficial effect of this scheme: the second through groove can accommodate welding spots after the second cross beam and the bottom plate are welded, and the welding spots generated by welding the second cross beam and the bottom plate can be effectively prevented from scratching the outer surface of the battery module, so that the battery module is damaged.
As a preferred embodiment of the invention, a plurality of first connecting columns are arranged on the fire-fighting support, the smoke sensor and the aerosol fire extinguisher are connected with the fire-fighting support through the first connecting columns, the fire-fighting support is positioned at the positions of the smoke sensor and the aerosol fire extinguisher and is hollowed out, and the mounting holes are opposite to the hollowed-out positions.
The beneficial effect of this scheme: 1. the first connecting column can provide a positioning function when the smoke sensor and the aerosol fire extinguisher are connected with the fire-fighting bracket, and the threaded connection is convenient for quick disassembly and quick connection between the smoke sensor and the aerosol fire extinguisher and the fire-fighting bracket; 2. in the scheme, the fire-fighting bracket is positioned at the smoke sensor and the aerosol fire extinguisher and is provided with the mounting holes corresponding to the hollowed-out parts, so that the weight of the whole fire-fighting bracket and the mounting part is reduced, and the fire-fighting bracket is more convenient to transport, mount and dismount; 3. on the other hand, when the inside of the battery box is in a normal state, the transverse position of the whole fire-fighting support is not right opposite to the mounting hole or the position of the fire-fighting support is just opposite to the mounting hole, so that the normal detection of the smoke sensor is not affected, the dust prevention and water prevention effects are not affected due to excessive exposure of the inside of the battery core, when the inside of the battery core is abnormal, if thermal runaway occurs, the internal gas is rapidly increased, a large amount of gas flows to the mounting hole at the fixing part through the inside of the battery core, and then flows to the hollow of the fire-fighting support through the mounting hole, and when the fire-fighting support is matched with the clamping column of the connecting rod through the strip-shaped hole, the floating type connection mode with adjustable transverse position is adopted, so that a large amount of rapidly increased gas can force the whole fire-fighting support to generate trace transverse movement, thereby enabling the right area of the hollow of the fire-fighting support and the mounting hole of the fixing part to be larger, enabling direct gas flow channels to be formed between the inside of each battery core and the smoke sensor and the explosion-proof pressure release valve, compared with other gas flow channels, the gas flow paths can be greatly shortened, the gas flow paths can be rapidly and rapidly through the inside of the battery core to the mounting hole to the fixing part and the mounting hole, and the explosion-proof pressure release valve, and the fire-fighting pressure sensor can also be more effectively detected, and the fire-fighting pressure release valve.
As a preferred embodiment of the invention, the second connecting post on the base plate extends into and through the parallel face of the fuse holder to the base plate, and the fuse holder is screwed to the base plate by the second connecting post on the base plate.
The beneficial effect of this scheme: the second spliced pole can provide locate function when putting on the bottom plate for fire control support and fuse support, and threaded connection can be convenient for quick detach quick connect between fire control support and fuse support and the bottom plate.
As a preferred embodiment of the present invention, the CCS assembly includes a buffer member, which is attached to an inner side of the upper cover of the battery case when the second sealing strip is attached to an inner side of the bottom plate perpendicularly to the first sealing strip perpendicularly to an outer side of the bottom plate.
The beneficial effect of this scheme: the buffer piece can weaken the external force that the battery box upper cover transmitted to the CCS component, and then can reduce when the battery box upper cover receives external force to the CCS component extrusion when the equipment.
In a preferred embodiment of the present invention, a plurality of first connection holes are formed on a surface of the first sealing strip parallel to the bottom plate, a plurality of second connection holes communicated with the first connection holes are formed on a surface of the second sealing strip parallel to the bottom plate, and the first sealing strip and the second sealing strip are connected through the first connection holes and the second connection holes in a threaded manner.
The beneficial effect of this scheme: the threaded connection can be convenient for connect the battery box upper cover with annular curb plate quick detach soon.
As a preferred embodiment of the invention, the two opposite side plates in the annular side plate comprise a fixing part and a reinforcing part, the outer side surface of the reinforcing part is provided with a plurality of lifting holes through which the lifting hooks can pass, and after the battery pack is assembled, the lifting hooks extend into the lifting holes to move the battery pack to a specified storage position.
The beneficial effect of this scheme: the hoisting hole is convenient for snatch the battery package after the equipment is accomplished, improves the efficiency of transporting the battery package.
Drawings
Fig. 1 is a schematic view of the structure of a battery pack of the present invention;
FIG. 2 is a schematic view of the unfolded structure of the battery pack of the present invention;
FIG. 3 is a schematic view of the structure of the battery case of the present invention;
fig. 4 is a schematic structural view of the cell mounting structure of the present invention;
FIG. 5 is a schematic view of the structure of the invention in position A;
fig. 6 is a schematic view of a partial structure of a battery pack according to the present invention;
FIG. 7 is a schematic diagram of the CCS assembly of the present invention;
FIG. 8 is a schematic view of the structure of the first and second beams of the present invention;
fig. 9 is a schematic structural view of embodiment 2 of the present invention;
FIG. 10 is a schematic view showing the structure of embodiment 3 of the present invention;
fig. 11 is a schematic view of the structure at the position B of the present invention.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be set forth in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.
In the description of the present application, the orientation or positional relationship indicated by the terms "first", "second", "one side", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present application and to simplify the description, rather than to indicate or imply that the structure referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The reference numerals include:
the battery module comprises a fixing piece 101, an output electrode bracket 102, a first through groove 103, a clamping groove 104, a spring piece 105, a second U-shaped groove 106, a connecting part 107, a supporting part 108, a first U-shaped groove 109, a mounting hole 110, a battery module 111, an output electrode connecting piece 112, an end plate 113, a battery cell group 114, a binding belt 115, a groove 116 and a first bracket 119;
a buffer 214;
the device comprises an annular side plate 301, a bottom plate 302, an upper cover 303, a fixing part 305, a reinforcing part 306, a lifting hole 307, a first beam 308, a second beam 309, a fire-fighting bracket 310, a containing cavity 311, a bump 312, a second through groove 313, a second bracket 314, a connecting rod 315, a clamping column 316, a strip-shaped hole 319 and a battery box 322;
a fuse holder 401, a fuse serial piece 410, and a fuse 411;
aerosol fire extinguisher 504, smoke sensor 505, hollowed-out 5061, first electromagnet 5091 and guide groove 509;
the standby gas-liquid two-phase spray head 601, the mounting seat 602, the guide rail 603, the mounting plate 604, the sliding block 605, the second electromagnet 606 and the magnet 607;
cell 701, CCS assembly 702, first seal 703, second seal 704, battery pack 705, collection end tab 706, first connection post 707, second connection post 708, first connection hole 709, second connection hole 710.
Example 1
The specific structure of the battery pack is as follows:
referring to fig. 1, 2, 3 and 4, a battery pack 705 includes a battery box 322 and a battery cell mounting structure located in the battery box 322, the battery box 322 includes an upper cover 303, an annular side plate 301 screwed with the upper cover 303, and a bottom plate 302 welded with an end face of the annular side plate 301, the annular side plate 301 including a first side plate, a second side plate opposite to the first side plate, a third side plate connected to the first side plate and the second side plate, and a fourth side plate opposite to the third side plate.
The first side plate and the second side plate both comprise a fixing part 305 and a reinforcing part 306 which are connected with the third side plate and the fourth side plate, the fixing part 305 is parallel to the reinforcing part 306 and is provided with a gap, the outer side surface of the reinforcing part 306 is provided with a plurality of lifting holes 307 which can be penetrated by inverted T-shaped lifting hooks, the surface of the fixing part 305, which is close to the battery cell group 114, is connected with an insulating sheet, the third side plate is connected with an explosion-proof pressure release valve which is detachably arranged on the third side plate and is close to the second side plate, and a gas-liquid two-phase spray head which is positioned right above the explosion-proof pressure release valve, the fire-fighting support 310 is connected with a smoke sensor 505 which is detachably arranged on the fire-fighting support 310, the aerosol fire extinguisher 504 is close to the smoke sensor 505, and the smoke sensor 505 and the explosion-proof pressure release valve are close to each other and are right opposite to each other. The surface of the fourth side plate, which is close to the end plate 113, is connected with an insulating sheet, and the bottom plate 302 is welded with a first beam 308 and a second beam 309 connected with the first side plate and the second side plate.
In the embodiment, the explosion-proof pressure release valve and the gas-liquid two-phase spray head are both positioned on the third side plate, so that the explosion-proof pressure release valve, the gas-liquid two-phase spray head and the fire-fighting bracket are positioned on the same side, the reasonable layout of the battery pack can be improved; the explosion-proof pressure release valve is arranged on the third side plate, when the battery pack is in a normal working state, gas in the battery pack box body flows to the outside through the explosion-proof pressure release valve, and the smoke sensor is close to the explosion-proof pressure release valve and faces the explosion-proof pressure release valve, so that the smoke sensor is just positioned on a flow path of the gas in the battery pack box body flowing to the explosion-proof pressure release valve, and the gas has certain fluidity, so that compared with other positions in the battery pack box body, the real-time detection of the smoke sensor can be ensured to be more reliable and stable, and the current gas concentration and the component conditions in the battery pack box body can be reflected integrally; when the abnormality occurs in the battery pack box body, the gas is rapidly increased, so that a large amount of gas is leaked through the explosion-proof pressure release valve, in the process, the smoke sensor is close to the explosion-proof pressure release valve and is designed to be opposite to the explosion-proof pressure release valve, so that the increase of the gas concentration and the change of the gas composition can be timely detected, countermeasures are timely taken to avoid the aggravation of abnormal conditions, and the design has the effect of timely and efficient detection.
The first beam 308 is close to the third side plate, the second beam 309 is close to the fourth side plate, the first beam 308 and the second beam 309 are connected with the battery cell mounting structure, a plurality of first threaded holes are formed in the first beam 308 and the second beam 309, second threaded holes communicated with the first threaded holes are symmetrically formed in the surface, which is contacted with the first beam 308, of the fixing piece 101, the first beam 308 and the second beam 309 are respectively connected with the fixing piece 101 through threads penetrating through the first threaded holes and the second threaded holes, the first beam 308 is in a U-shaped shape, the first beam 308 comprises a vertical part and a transverse part connected with the vertical part, the end face of the vertical part of the first beam 308 is connected with the bottom plate 302, the first threaded holes are located on the transverse part of the first beam 308, a plurality of U-shaped second through grooves 313 are formed in the second beam 309, and a plurality of protruding blocks 312 which can extend into the accommodating cavity 311 are fixedly connected with the surface, which is connected with the fixing piece 101.
In this embodiment, the fixing portion 305 and the reinforcing portion 306 are welded to the third side plate, the fourth side plate and the bottom plate 302, and the third side plate is further connected with a charge-discharge interface near the first side plate and an electronic device at the center of the third side plate.
The end face of the annular side plate 301 connected with the upper cover 303 is welded with an annular first sealing strip 703, the end face of the upper cover 303 connected with the annular side plate 301 is welded with an annular second sealing strip 704 with an L-shaped cross section, the inner side face of the second sealing strip 704 perpendicular to the bottom plate 302 is attached to the outer side face of the first sealing strip 703, a plurality of first connecting holes 709 are formed in the first sealing strip 703, a plurality of second connecting holes 710 communicated with the first connecting holes 709 are formed in the second sealing strip 704, and the first sealing strip 703 and the second sealing strip 704 are in threaded connection through the first connecting holes 709 and the second connecting holes 710.
As shown in fig. 7, the battery cell mounting structure includes a plurality of groups of battery modules 111, an output electrode connecting sheet 112 with one end connected with the battery modules 111, a fire-fighting bracket 310 connected with the battery modules 111, and a fuse bracket 401, wherein the battery modules 111 include a battery cell group 114, end plates 113 positioned at two ends of the battery cell group 114, and a binding belt 115 connecting the battery cell group 114 and the end plates 113, one end face of the battery cell group 114 is bonded with a bottom plate 302, and the other end face is bonded with a CCS assembly 702 bonded with the inner side face of an upper cover 303.
The CCS assembly 702 includes a first insulating film bonded to an end surface of the battery cell 701 and capable of exposing a terminal of the battery cell 701, a plurality of bus bars welded to the terminal of the battery cell 701, a circuit board electrically connected to the bus bars and bonded to the first insulating film, a second insulating film bonded to an outer surface of the bus bars, an outer surface of the circuit board, an outer surface of the first insulating film, a buffer plate bonded to an outer surface of the second insulating film, and a buffer member 214 disposed on the buffer plate.
The circuit board (not shown in the figure) is connected to the collecting terminal connecting piece 706 located on the first U-shaped slot 109, and the output terminal connecting piece 112 is connected to the terminal of the electric core 701 and located on the first U-shaped slot 109.
As shown in fig. 6 and 8, the end plate 113 includes a fixing member 101 capable of being connected to a first beam 308 and a second beam 309, and an output electrode support 102 connected to the fixing member 101, the fixing member 101 is provided with a first through slot 103 penetrating through two end surfaces of the fixing member 101, an upper end surface of the fixing member 101 is provided with a clamping slot 104 communicating with the first through slot 103, the output electrode support 102 is connected with a spring sheet 105 capable of being clamped into the clamping slot 104, an upper end surface of the fixing member 101 is provided with a second U-shaped slot 106 communicating with the first through slot 103, the first through slot 103 is connected with a plurality of connecting parts 107 connecting two inner side walls opposite to the first through slot 103, the bottom of the output electrode support 102 is symmetrically connected with a supporting part 108 protruding from the bottom of the connecting part 107 and attached to the bottom of the second U-shaped slot 106, the connecting part 107 plays a supporting role in supporting the supporting part 108, the transverse straight part of the first beam 308 is connected with the fixing member 101, the first through slot 103 and the connecting part 107 form a plurality of accommodating cavities 311, the second beam 309 is fixedly connected with the fixing member 101, the surface of the bump 312 is connected with the fixing member 312, the bump 312 extends into the accommodating cavity 311, the first through slot 103 is provided with a plurality of U-shaped slots 311, and the first U-shaped support 102 is provided with a plurality of U-shaped connecting parts 109, and the bottom of the first U-shaped support 109 is connected with the first U-shaped support 109, and the bottom of the first U-shaped support 109 is connected with the first U-shaped 109.
In this embodiment, two ends of the bottom of the output pole support 102 are symmetrically connected with step portions, before the spring plate 105 is clamped into the clamping groove 104, the spring plate 104 is pressed first, so that the spring plate 104 moves towards the central axis in the width direction of the output pole support 102, the supporting portion 108 is attached to the connecting portion 107 and the second U-shaped groove 106, meanwhile, the step portions are attached to the outer surface of the fixing piece 101, the vertical portion of the step portions is abutted to the side wall of the second U-shaped groove 106, the spring plate 105 moves to the clamping groove 104 along the length direction of the first through groove 103 in the first through groove 103, the spring plate 105 is released, part of the spring plate 105 is clamped into the clamping groove 104, and part of the spring plate 105 is located between the output pole support 102 and the second U-shaped groove 106, and at this time, the step portions are not contacted with the connecting portion 107; the spring plate 105 is taken out of the clamping groove 104, and the part of the spring plate 105 between the output pole support 102 and the second U-shaped groove 106 is pressed first, so that the spring plate 105 moves towards the central axis close to the width direction of the output pole support 102, the part of the spring plate 105 clamped in the clamping groove 104 is withdrawn from the clamping groove 104, the output pole support 102 is taken upwards directly, and the output pole support 102 is detached from the fixing piece 101.
As shown in fig. 5, the fixing pieces 101 are connected with adjacent fixing pieces 101 through a first bracket 119, the first bracket 119 is L-shaped, the inner side surface of the first bracket 119 is attached to the outer surface of the fixing piece 101, the first bracket 119 is connected with the surface of the output pole bracket 102 by screw threads, the surface of the fixing piece 101 connected with the output pole bracket 102 is connected with a second bracket 314 by screw threads, the first bracket 119 is connected with the second bracket 314 through a connecting rod 315, the connecting rod 315 is attached to the outer side surface of the fixing piece 101, clamping posts 316 are arranged on the parallel surfaces of the connecting rod 315 and the outer side surface of the fixing piece 101, and strip-shaped holes 319 clamped on the clamping posts 316 are formed in the upper portion of the fire-fighting bracket 310.
The fire-fighting bracket 310 is connected with a smoke sensor 505 and an aerosol fire extinguisher 504 which are detachably arranged on the fire-fighting bracket 310, the aerosol fire extinguisher 504 is close to the smoke sensor 505, the smoke sensor 505 and the explosion-proof pressure release valve are close to each other and are opposite to each other, the outer side surface of the fixing piece 101 is symmetrically provided with a mounting hole 110 which is convenient for placing the electric core 701 mounting structure into the battery box 322 and is communicated with the through groove, the fire-fighting bracket 310 is positioned at the positions of the smoke sensor 505 and the aerosol fire extinguisher 504 and is hollowed out, and the mounting hole 110 can be opposite to the hollowed-out position.
A plurality of second connecting columns 708 are fixedly connected to the base plate 302, the fire-fighting support 310 and the fuse support 401 are located between the third side plate and the first beam 308, the fire-fighting support 310 is close to the second side plate, the fuse support 401 is close to the fire-fighting support 310, the second connecting columns 708 on the base plate 302 extend into and pass through holes located on the parallel face of the fuse support 401 and the base plate 302, and the fuse support 401 and the base plate 302 are connected through threads of the second connecting columns 708 on the base plate 302.
In this embodiment, the battery module 111 is formed by the battery cell group 114 and the end plate 113, the battery cell group 114 is formed by a plurality of battery cells 114, the battery cell group 114 is formed by a plurality of battery cells 701, a heat insulation member is connected between the battery cells 701, an insulating cover is connected between the fixing member 101 and the battery cell group 114, the insulating cover is concave, the insulating cover covers the battery cell 701, the heat insulation member is adhered to the parallel surfaces of the battery cell 701 and the third side plate, the fixing member 101, the insulating cover, the heat insulation member and the battery cell group 114 are connected through the binding tape 115, and the output electrode connecting sheet 112 is the output electrode connecting sheet 112 connected with the terminal post of the battery cell 701.
A method of assembling a battery pack 705, comprising the steps of:
s: assembled end plate 113
Pressing the spring plate 105 positioned on the output pole bracket 102, clamping the spring plate 105 into the clamping groove 104 on the fixing piece 101, enabling the supporting part 108 to be attached to the second U-shaped groove 106 and the connecting part 107 on the fixing piece 101, and connecting and assembling the output pole bracket 102 and the fixing piece 101 to form the end plate 113;
s: assembled battery module 111
Bonding a plurality of electric cells 701 together to form an electric cell group 114, binding the electric cell group 114 and two end plates 113 positioned at two ends of the electric cell group 114 together by passing a binding belt 115 through a groove 116 on a fixing piece 101 to form a group of battery modules 111;
s: assembling CCS component 702
Connecting CCS assembly 702 with the end face of battery module 111 adjacent to upper cover 303 of battery box 322;
s: assembled battery box 322
Welding the first beam 308 and the bottom plate 302 together at the joint of the vertical part on the first beam 308 and the bottom plate 302 of the battery box 322, welding the second beam 309 and the bottom plate 302 of the battery box 322 together at the position of the second through groove 313 on the second beam 309, welding one end face of the annular side plate 301 of the battery box 322 and the bottom plate 302, welding the annular side plate 301 and the first sealing strip 703, and welding the upper cover 303 and the second sealing strip 704 with an L-shaped cross section;
s: assembled battery pack 705
The battery module 111 is placed between the first beam 308 and the second beam 309 through the mounting hole 110 on the end plate 113, the protruding block 312 on the second beam 309 extends into the accommodating cavity 311 of the fixing piece 101, the end face of the battery cell 701 is adhered to the bottom plate 302, and a plurality of groups of battery modules 111 are placed on the bottom plate 302 in sequence according to the mode;
the first bracket 119 connects the fixing element 101 with the adjacent fixing element 101, the first bracket 119, the fixing element 101 and the first beam 308 are in threaded connection, the second bracket 314 connected with the first bracket 119 through the connecting rod 315, the fixing element 101 and the first beam 308 are in threaded connection, the first bracket 119, the fixing element 101 and the second beam 309 are in threaded connection, and the second bracket 314, the fixing element 101 and the second beam 309 are in threaded connection;
connecting a fire-fighting support 310 with clamping columns 316 on a first support 119 and a second support 314 through strip-shaped holes 319 positioned at the upper part of the fire-fighting support 310, wherein a plurality of first connecting columns 707 are arranged on the fire-fighting support 310, connecting a smoke sensor 505 and an aerosol fire extinguisher 504 with the fire-fighting support 310 through the first connecting columns 707, and hollowing out the fire-fighting support 310 at the positions of the smoke sensor 505 and the aerosol fire extinguisher 504, wherein the positions of the mounting holes 110 and the hollows out positions are opposite;
the output electrode connecting piece 112, the collecting end connecting piece 706 and the fuse connecting piece 706 are respectively placed on the first U-shaped groove 109 of the output electrode bracket 102, the output electrode connecting piece 112, the fuse serial piece 410 and the corresponding first U-shaped groove 109 are in threaded connection, the output electrode connecting piece 112, the collecting end connecting piece 706 and the corresponding first U-shaped groove 109 are in threaded connection, and the other end of the fuse serial piece 410 is in threaded connection with the fuse 411 and the fuse bracket 401;
extending the second connection post 708 on the base plate 302 into and through the hole located on the side of the fire support 310 parallel to the base plate 302, threadably connecting the fire support 310 to the base plate 302 via the second connection post 708 on the base plate 302, extending the second connection post 708 on the base plate 302 into and through the hole located on the side of the fuse support 401 parallel to the base plate 302, threadably connecting the fuse support 401 to the base plate 302 via the second connection post 708 on the base plate 302;
the second sealing strip 704 is vertically attached to the inner side surface of the bottom plate 302 and the first sealing strip 703 is vertically attached to the outer side surface of the bottom plate 302, the first sealing strip 703 and the second sealing strip 704 are in threaded connection through the first connecting hole 709 and the second connecting hole 710, and meanwhile the buffer piece 214 located on the CCS assembly 702 is attached to the inner side surface of the upper cover 303 of the battery box 322;
after the battery pack 705 is assembled, the hooks are inserted into the hanging holes 307, and the battery pack 705 is moved to a designated storage position.
Example 2
As shown in fig. 9, the difference between the present embodiment and embodiment 1 is that the fire protection device of the battery pack of the present embodiment further discloses a connection mode between the smoke sensor 505 and the fire protection bracket 310, in this embodiment, two guide slots 509 along the vertical direction are provided on two sides of the fire protection bracket 310, which are located at the hollow 5061, the cross section of the guide slots 509 is in a dovetail shape, the lower parts of the guide slots extend downward beyond the hollow 5061, a first electromagnet 5091 is provided at the position of the bottom of the guide slots, which is opposite to the explosion-proof pressure release valve, two sliding blocks (not shown in the figure) slidingly engaged with the guide slots 509 are provided on the inner side surface of the smoke sensor 505, metal sheets capable of being absorbed by the first electromagnet 5091 are provided at the bottom of the sliding blocks, and the on-off of the first electromagnet 5091 is controlled by a controller provided in the battery pack.
When the battery pack works normally, the electromagnet is electrified, so that the smoke sensor is adsorbed, the smoke sensor faces the explosion-proof pressure release valve, a large amount of gas is generated in the battery pack, and the smoke sensor timely detects that the smoke concentration is increased, and simultaneously, the pressure of the large amount of gas is released through the explosion-proof pressure release valve. If after the explosion-proof pressure release valve and the outside of the battery pack form a free gas channel, the smoke sensor is still in a right position with the explosion-proof pressure release valve, and the smoke concentration at the position is lower than the smoke concentration at other positions of the battery pack due to the rapid circulation of gas at the explosion-proof pressure release valve, so that the smoke concentration detected by the smoke sensor is inaccurate.
The embodiment further discloses fire control early warning method of battery package, still includes smoke transducer position adjustment step, and after explosion-proof relief valve was released the pressure, the electro-magnet outage was controlled to the controller to make smoke transducer slide to the position that is close to battery package bottom along the guide way under self gravity effect, thereby no longer just right with explosion-proof relief valve.
Example 3
As shown in fig. 10 and 11, the present embodiment is different from embodiment 1 in that: in this embodiment, the air-liquid dual-phase spray nozzle further comprises a standby air-liquid dual-phase spray nozzle 601, a through hole is formed in the battery box 322, the standby air-liquid dual-phase spray nozzle 601 horizontally penetrates through the through hole, one end of a nozzle of the standby air-liquid dual-phase spray nozzle faces the inside of the battery box 322, an installation seat 602 is arranged outside the battery box 322, a guide rail 603 is arranged on the upper portion of the installation seat 602, one end, far away from the nozzle, of the standby air-liquid dual-phase spray nozzle 601 is provided with an installation plate 604, two sides of the lower portion of the installation plate 604 are respectively provided with a sliding block 605, the sliding block 605 is in sliding fit with the guide rail 603, a second electromagnet 606 is arranged at the end, close to the battery box 322, of the installation seat 602, on one side, close to the battery box 322, of the sliding block 605 is provided with a magnet 607 which can be adsorbed or repelled by the second electromagnet 606, and the polarity of the second electromagnet 606 is controlled by a controller according to the temperature collected in the battery box 322 and the temperature condition collected in the energy storage container.
The use scene and principle of this scheme lie in: in the electrochemical energy storage technology, a battery pack is a basic energy storage unit and is formed by installing a plurality of groups of battery modules inside a battery box, each group of battery modules comprises a plurality of battery cores which are arranged in a row, a temperature sensor is arranged on each battery core, the temperature inside the battery box is measured by the highest value of the temperature collected in each battery core, the plurality of battery packs form an energy storage container, the temperatures outside the battery box and inside the shell of the energy storage container are collected through the temperature sensors inside the energy storage container, and in addition, smoke sensors are also arranged inside and outside the battery box.
Description: in the invention, in a normal initial state, the second electromagnet is electrified to enable the polarity of the second electromagnet to be different from that of the magnet, so that the magnet is adsorbed, a nozzle of the standby gas-liquid two-phase spray head faces the inside of the battery box, the standby gas-liquid two-phase spray head is always connected with a fire-fighting pipeline, and a valve is arranged on the fire-fighting pipeline.
The invention is provided with the standby gas-liquid two-phase spray head, and has the following advantages: when the temperature inside a certain battery box is too high and the gas concentration is too high and exceeds the warning value to approach the dangerous value, the controller can control the valve on the fire-fighting pipeline to be opened at the moment, so that the standby gas-liquid two-phase spray head is started to extinguish the fire inside the battery box.
When the temperature sensor in the energy storage container collects the temperature in the whole energy storage container to be too high, the smoke sensor in the energy storage container collects smoke concentration to be too high, the fact that open fire is generated is required to extinguish fire, and when the temperature and the smoke concentration in the single battery box are not close to dangerous values, the controller can control the second electromagnet to be electrified with reverse current, so that the polarities of the second electromagnet and the magnets are the same, and the second electromagnet repels each other, the sliding blocks positioned on two sides of the lower portion of the mounting plate slide along the guide rail under the repulsive force effect, so that the standby gas-liquid two-phase spray head is driven to gradually withdraw from the through hole of the battery box until the nozzle of the gas-liquid two-phase spray head is completely positioned between the outside of the battery box and the shell of the energy storage container, then the controller controls the valve to be opened, the standby gas-liquid two-phase spray head is started to extinguish fire, meanwhile, after the standby gas-liquid two-phase spray head withdraws from the through hole, the battery box and the inner space of the energy storage container are communicated, so that the internal gas flow inside the battery box or the inner space of the energy storage container is better, and the explosion danger caused by mass aggregation of gas in the internal gas flow of the battery box or the gas flow difference inside the energy storage container is avoided, and the design has more outstanding technical effects.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (10)
1. A method of assembling a battery pack, comprising: the method comprises the following assembly steps:
s1: assembled end plate
The spring piece positioned on the output pole bracket is clamped into the clamping groove on the fixing piece, and the end plate is formed by assembly;
s2: assembled battery module
Bonding a plurality of electric cores together to form an electric core group, binding the electric core group and two end plates positioned at two ends of the electric core group together by passing a binding belt through a groove on a fixing piece to form a group of battery modules;
s3: assembling CCS components
Connecting the CCS component with the end face, close to the upper cover of the battery box, of the battery module;
s4: assembled battery box
Connecting a bottom plate of the battery box with the first cross beam and the second cross beam, connecting an annular side plate of the battery box with the bottom plate, connecting the annular side plate with the first sealing strip, and connecting the upper cover with the second sealing strip with an L-shaped cross section;
s5: assembled battery pack
The battery module is placed between the first beam and the second beam through the mounting hole on the end plate, the convex block on the second beam stretches into the accommodating cavity of the fixing piece, the end face of the battery core is connected with the bottom plate, and a plurality of groups of battery modules are sequentially placed on the bottom plate according to the mode;
the first bracket is used for connecting the fixing piece with the adjacent fixing piece, the first bracket, the fixing piece and the first cross beam are connected, the second bracket, the fixing piece and the first cross beam are connected with the first bracket through connecting rods, the first bracket, the fixing piece and the second cross beam are connected, and the second bracket, the fixing piece and the second cross beam are connected;
connecting the fire-fighting support with clamping posts on the first support and the second support through strip-shaped holes on the upper part of the fire-fighting support, connecting one end of an output electrode connecting piece connected with the battery cell and one end of a collecting end connecting piece connected with the circuit board with a first U-shaped groove on the output electrode support, and connecting one end of a fuse serial connecting piece connected with the output electrode connecting piece with a fuse and a fuse support;
the second sealing strip is perpendicular to the inner side surface of the bottom plate and the first sealing strip are perpendicular to the outer side surface of the bottom plate, and meanwhile, the CCS component is attached to the inner side surface of the upper cover of the battery box.
2. The method of assembly of claim 1, wherein: the mounting is equipped with the first logical groove that runs through both ends face about the mounting, the mounting up end is equipped with the second U type groove that communicates with first logical groove, first logical groove is equipped with the connecting portion of two inside walls that a plurality of connection first logical grooves are relative, output pole support is equipped with outstanding and can be simultaneously with connecting portion, the supporting part of second U type groove laminating along output pole support width direction symmetry, hold the chamber and enclose by first logical groove and connecting portion and close and form, the mounting hole is located the mounting lateral surface and with hold the chamber intercommunication, presses the shell fragment that is located output pole support, then with the shell fragment card income draw-in groove, supporting part and second U type groove and connecting portion laminating simultaneously.
3. The method of assembly of claim 2, wherein: the output electrode support is provided with a plurality of first U-shaped grooves, output electrode connecting pieces connected with the battery core electrode posts and collecting end connecting pieces connected with the circuit board are respectively placed on the first U-shaped grooves of one output electrode support, and the output electrode connecting pieces and the collecting end connecting pieces are respectively connected with the corresponding first U-shaped grooves.
4. The method of assembly of claim 1, wherein: the first cross beam is U-shaped, and the joint of the vertical part of the first cross beam and the bottom plate welds the first cross beam and the bottom plate together.
5. The method of assembly of claim 1, wherein: the second cross beam is provided with a plurality of U-shaped second through grooves, and the second cross beam and the bottom plate are welded together at the positions of the second through grooves.
6. The method of assembly of claim 1, wherein: the fire-fighting support is provided with a plurality of first connecting columns, the smoke sensor and the aerosol fire extinguisher are connected with the fire-fighting support through the first connecting columns, the fire-fighting support is located at the position of the smoke sensor and the aerosol fire extinguisher and is hollowed out, and the installation hole is opposite to the position of the hollowed-out position.
7. The method of assembly of claim 1, wherein: and extending a second connecting column on the bottom plate into and through the parallel surface of the fuse support and the bottom plate, and connecting the fuse support and the bottom plate through threads of the second connecting column on the bottom plate.
8. The method of assembly of claim 1, wherein: the CCS component comprises a buffer piece, and when the second sealing strip is vertically attached to the inner side surface of the bottom plate and the first sealing strip is vertically attached to the outer side surface of the bottom plate, the buffer piece is attached to the inner side surface of the upper cover of the battery box.
9. The method of assembly of claim 1, wherein: the first sealing strip is provided with a plurality of first connecting holes on the surface parallel to the bottom plate, the second sealing strip is provided with a plurality of second connecting holes communicated with the first connecting holes on the surface parallel to the bottom plate, and the first sealing strip and the second sealing strip are in threaded connection through the first connecting holes and the second connecting holes.
10. The method of assembly of claim 1, wherein: opposite both sides board includes fixed part and reinforcement portion in the annular curb plate, the hoisting hole that a plurality of lifting hooks can pass is opened to reinforcement portion lateral surface, after accomplishing the battery package equipment, in the lifting hook stretched into the hoisting hole, moved the battery package to appointed storage position department.
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|---|---|---|---|
| CN202310565867.0A CN116525919A (en) | 2023-05-19 | 2023-05-19 | Battery pack assembling method |
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| CN202310565867.0A CN116525919A (en) | 2023-05-19 | 2023-05-19 | Battery pack assembling method |
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