CN117080532A - Large cylindrical battery module assembly method - Google Patents
Large cylindrical battery module assembly method Download PDFInfo
- Publication number
- CN117080532A CN117080532A CN202311097156.1A CN202311097156A CN117080532A CN 117080532 A CN117080532 A CN 117080532A CN 202311097156 A CN202311097156 A CN 202311097156A CN 117080532 A CN117080532 A CN 117080532A
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- Prior art keywords
- large cylindrical
- battery cell
- cylindrical battery
- plate
- cooling belt
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000003825 pressing Methods 0.000 claims abstract description 86
- 238000001816 cooling Methods 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000003466 welding Methods 0.000 claims abstract description 51
- 239000000853 adhesive Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 8
- 238000004026 adhesive bonding Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a large cylindrical battery module assembly method, which comprises the following steps of coating heat conduction structural adhesive on a battery core placement position of a water-cooled belt; pressing each large cylindrical cell separately and adhering the large cylindrical cell to each cell placing position through the heat conducting structure adhesive, so that the water cooling belt and the large cylindrical cells are combined into a cell group; placing a plurality of cell groups into a tray; covering the acquisition cover plate on the tops of all the battery cell groups; the collecting cover plate is pressed on the tops of all the battery cell groups through the welding tool plate, the busbar on the collecting cover plate is connected with the electrode of each large cylindrical battery cell, and the welding tool plate is removed to complete the assembly of the large cylindrical battery module. According to the method, the large cylinder and the water cooling belt are integrated into the battery cell group outside the battery shell, the battery cell group is placed on the tray for assembly, and the assembly efficiency of the large cylinder battery module is improved through an integral collecting cover plate and integral busbar welding mode, so that mass production of the large cylinder battery module can be realized.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a large-cylinder battery module assembly method.
Background
Along with the development of new energy industry, the lithium ion battery is used as a power battery of a hybrid electric vehicle and an electric vehicle, and has the advantages of light weight, large energy storage, large power, no pollution, long service life, small self-discharge coefficient, wide temperature application range and the like, so that the lithium ion battery is favored by people gradually, and the lithium ion battery also replaces other traditional batteries in the fields of energy storage and power batteries gradually.
The large-cylinder lithium battery has the characteristics of high production efficiency, low production cost, high specific energy and the like, and the battery with the diameter of the battery core cylinder of 46mm in the large-cylinder battery, namely a 46-series large-cylinder battery, utilizes the dimensional stability, uniformity and thermal runaway safety of the large cylinder, becomes one of products favored by a plurality of users, and all the large-cylinder lithium batteries are an important development direction.
The group research on the large cylindrical battery module is still in an initial sample package stage, and in the prior art, in the assembly process of the large cylindrical battery module, a large cylindrical battery cell and a water cooling belt are assembled in a bulk manner into a shell, so that the assembly efficiency of the large cylindrical battery module is low, and the problem that mass production cannot be realized exists.
Disclosure of Invention
Aiming at one or more of the problems, the invention aims to provide a large-cylinder battery module assembly method, which is characterized in that a large cylinder and a water-cooled belt are integrated into a battery core group outside a battery shell, the battery core group is placed on a tray for assembly, and the assembly efficiency of the large-cylinder battery module is improved by an integral collecting cover plate and integral busbar welding mode, so that the mass production of the large-cylinder battery module can be realized.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the large cylindrical battery module assembly method comprises the following steps:
coating heat conduction structural adhesive on the cell placement position of the water-cooled band;
pressing each large cylindrical battery cell respectively, and adhering the large cylindrical battery cells to each battery cell placing position through the heat conducting structure adhesive to enable the water cooling belt and the large cylindrical battery cells to be combined into a battery cell group;
placing a plurality of the cell groups into a tray;
covering the acquisition cover plate on the tops of all the battery cell groups;
the collecting cover plates are pressed on the tops of all the battery cell groups through the welding tool plates, the bus bars on the collecting cover plates are connected with the electrodes of each large cylindrical battery cell, and the welding tool plates are removed to complete the assembly of the large cylindrical battery module.
Preferably, pressing each large cylindrical cell onto each cell placement position, respectively, including:
placing the water-cooling belt coated with the heat-conducting structural adhesive on a tooling plate of a water-cooling belt pressing tooling;
and respectively placing each large cylindrical battery cell on a battery cell placing position on the water cooling belt, pressing the large cylindrical battery cells on the battery cell placing position through a pressing plate of the water cooling belt pressing tool, and removing the water cooling belt pressing tool to combine the water cooling belt and the battery cells into a battery cell group.
Preferably, the water cooling belt coated with the heat conducting structural adhesive is placed on a tooling plate of a water cooling belt pressing tooling, and the method comprises the following steps:
the tooling plate is provided with a plurality of limiting plates, the limiting plates are respectively arranged on two sides of the water cooling belt and used for limiting the water cooling belt.
Preferably, the limiting plates are respectively arranged at two sides of the water cooling belt, and the limiting plates comprise:
the limiting plate is provided with a step, and the water cooling belt is placed on the step and used for supporting the water cooling belt.
Preferably, the pressing plate of the pressing tool is used for pressing the large cylindrical battery cell on the battery cell placement position, and the pressing plate comprises:
the pressing plate comprises a left pressing plate and a left pressing plate, and the large cylindrical battery cell voltage is respectively pressed on the battery cell placing positions on two sides of the water cooling belt through the left pressing plate and the right pressing plate.
Preferably, the large cylindrical battery cell is pressed on the battery cell placement positions on two sides of the water-cooled belt by the left pressing plate and the right pressing plate respectively, and the method comprises the following steps:
the left pressing plate and one of the two ends of the right pressing plate are respectively provided with a positioning pin, the other two ends of the left pressing plate and the right pressing plate are respectively provided with positioning holes matched with the positioning pins, and when the large cylindrical battery cell voltage is respectively pressed on the battery cell placing positions on the two sides of the water cooling belt through the left pressing plate and the right pressing plate, the positioning pins are inserted into the positioning holes.
Preferably, placing a plurality of the cell groups into a tray includes:
and a battery cell positioning groove is formed in the bottom of the tray, and each large cylindrical battery cell in the battery cell group is placed in the corresponding battery cell positioning groove.
Preferably, the collecting cover plate is covered on the top of all the battery cell groups, including:
the tray is provided with side walls around, the tray with the side walls form the casing, the top surface of side walls is equipped with a plurality of locating holes, gather be equipped with on the apron with the locating pin that the locating hole corresponds, will gather the apron lid and establish when all the top of electric core group, the locating pin inserts and establishes in the locating hole.
Preferably, the collecting cover plate is pressed on the top of all the battery cell groups by a welding tooling plate, and the busbar of the collecting cover plate is connected with the electrode of each large cylindrical battery cell, which comprises the following steps:
and each busbar welding position on the welding tooling plate is provided with a welding hole, and the side edge of each welding hole is provided with a bulge, so that the busbar is pressed on the electrode of the large cylindrical battery cell through the bulge.
Preferably, connecting the bus bar on the collecting cover plate with the electrode of each large cylindrical cell includes:
dividing the collecting cover plate into different areas, and performing press welding on the busbar and the electrode of the large cylindrical battery cell in the areas.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. according to the large-cylinder battery module assembly method, the large cylinder and the water-cooling belt are integrated into the battery cell group outside the battery shell through the water-cooling belt pressing tool, and the battery cell group is placed on the tray for assembly.
2. According to the large-cylinder battery module assembly method provided by the invention, the collecting cover plate is integrated with the busbar, so that the integral welding of the busbar and the large-cylinder battery cell is realized.
3. According to the large-cylinder battery module assembly method, the integral welding tooling plate is different from a conventional sectional tooling, so that welding is simplified and accurate, and the large-cylinder battery module assembly efficiency is further improved.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for assembling a large cylindrical battery module according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a water-cooled belt according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the press-fit process of the water-cooled strip and the large cylindrical battery cell according to the embodiment of the invention.
Fig. 4 is a schematic diagram of a structure of a water-cooled tape and a large cylindrical battery cell after lamination according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a battery cell set according to the embodiment of the present invention.
Fig. 6 is a schematic diagram of a partial enlarged structure of a battery cell according to the embodiment of the invention.
Fig. 7 is a schematic structural diagram of a water-cooling belt pressing tool according to the embodiment of the invention.
Fig. 8 is a schematic diagram showing a part of a limiting plate in the water-cooled belt pressing tool according to the embodiment of the invention in an enlarged manner.
Fig. 9 is a schematic diagram showing a part of a limiting plate in the water-cooled belt pressing tool according to the second embodiment of the present invention.
Fig. 10 is a schematic view of a tray structure according to the embodiment of the present invention.
Fig. 11 is an assembly schematic diagram of a collection cover plate according to the embodiment of the invention.
FIG. 12 is a schematic view of an assembly of a welding tooling plate provided by this embodiment of the invention.
Fig. 13 is an enlarged schematic view of the front surface of the boss laminated busbar according to the embodiment of the present invention.
Fig. 14 is an enlarged schematic view of the back surface of the boss laminated busbar according to the embodiment of the present invention.
Fig. 15 is a schematic view of the split zone welding provided by this embodiment of the present invention.
The reference numerals in the drawings:
1 is a water cooling belt, 101 is a battery cell placement position, 2 is a large cylindrical battery cell, 3 is a tray, 301 is a battery cell positioning groove, 4 is a collecting cover plate, 401 is a bus bar, 402 is a special-shaped hole, 5 is a welding tool plate, 501 is a welding hole, 502 is a bulge, 601 is a tool plate, 602 is a left press plate, 603 is a right press plate, 604 is a positioning pin, 605 is a positioning hole, 606 is a boss, 607 is a notch, and 7 is a limiting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
According to the large-cylinder battery module assembly method, the large cylinder and the water-cooled belt are integrated into the battery cell group outside the battery shell, the battery cell group is placed on the tray for assembly, and the large-cylinder battery module assembly efficiency is improved through an integral collecting cover plate and integral busbar welding mode, so that mass production of the large-cylinder battery module can be realized.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
Referring to fig. 1, the method for assembling a large cylindrical battery module according to the present embodiment includes the steps of:
s1, coating heat conduction structural adhesive on a battery cell placement position 101 of a water-cooled belt 1;
s2, respectively pressing and adhering each large cylindrical battery cell 2 to each battery cell placing position 101 through the heat conducting structure adhesive, so that the water cooling belt 1 and the large cylindrical battery cells 2 are combined into a battery cell group;
s3, placing a plurality of battery cell groups into the tray 3;
s4, covering the acquisition cover plate 4 on the tops of all the battery cell groups;
s5, pressing the collecting cover plate 4 on the tops of all the battery cell groups through the welding tool plate 5, connecting the busbar 401 on the collecting cover plate 4 with the electrode of each large cylindrical battery cell 2, and disassembling the welding tool plate 5 to complete the assembly of the large cylindrical battery module.
Referring to fig. 2, in step S1, a heat conductive structural adhesive is applied to the cell placement 101 of the water-cooled tape 1.
Specifically, the water-cooled belt 1 is placed on an automatic gluing table top, the gluing track and the gluing interval of gluing equipment are preset according to the cell placement positions 101, the water-cooled belt 1 is coated with a heat conduction structure, and all the cell placement positions 101 on the two sides of the water-cooled belt are pre-coated with heat conduction structure glue.
The water cooling belt 1 is in a strip shape, one side end part of the water cooling belt 1 is provided with a water inlet and a water outlet, the inside of the water cooling belt 1 is provided with a channel, two ends of the channel are respectively connected with the water inlet and the water outlet, and cooling liquid enters the channel through the water inlet and is discharged from the water outlet; because the large cylindrical battery cell 2 is attached to the two sides of the water cooling belt 1, the cooling of the large cylindrical battery cell 2 can be realized.
The electric core is placed position 101 for setting up the arc wall in the water-cooled strip 1 both sides, and every electric core is placed position 101 even interval and is set up in the water-cooled strip 1 both sides, and electric core is placed position 101 indent, and every electric core is placed position 101 and is the arc wall, matches with the lateral wall arcwall face of big cylinder electric core 2 to increase the area of contact between them, can be more firm when making both bond. The heat conduction structural adhesive can adhere the large cylindrical battery cell 2 to the battery cell placement position 101.
Referring to fig. 3, in step S2, each large cylindrical cell 2 is pressed onto each cell placement site 101, respectively.
Specifically, a large cylindrical battery cell 2 is pressed to a battery cell placing position 101 through a water-cooling belt pressing tool, wherein the water-cooling belt pressing tool comprises a tool plate 601 and a pressing plate, the pressing plate comprises a left pressing plate 602 and a right pressing plate 603, and a water-cooling belt 1 coated with heat-conducting structural adhesive is clamped and placed on the tool plate 601; the large cylindrical battery cells 2 which are to be adhered to the two sides of the water-cooling belt 1 are sucked or clamped on the battery cell placing positions 101 on the two sides of the water-cooling belt 1; the left pressing plate 602 and the right pressing plate 603 are driven by an external executing mechanism to be close to the water cooling belt 1, the large cylindrical battery cell 2 is clamped, the large cylindrical battery cell 2 is accurately and rapidly positioned on the battery cell placement position 101 under the action of the left pressing plate 602 and the right pressing plate 603, after the heat conduction structural adhesive is solidified, the tooling plate 601, the left pressing plate 602 and the right pressing plate 603 are removed as shown in fig. 4 and 5, and the large cylindrical battery cell 2 and the water cooling belt 1 are assembled into a battery cell group. Compared with the prior art, the assembly efficiency of the large cylindrical battery core 2 and the water cooling belt 1 is improved through the water cooling belt pressing tool, and the subsequent modularized assembly is realized.
Referring to fig. 6, after the large cylindrical battery cells 2 are adhered to the battery cell placement position 101, gaps are formed between two adjacent large cylindrical battery cells 2, and the gaps between all the adjacent large cylindrical battery cells 2 are equal, so that the assembly positioning accuracy of the large cylindrical battery cells 2 is improved.
In this embodiment, one of the two ends of the left pressing plate 602 and the right pressing plate 603 is respectively provided with a positioning pin 604, and the other two ends are respectively provided with a positioning hole 605 matched with the positioning pin 604, and when the large cylindrical cell voltage 2 is respectively pressed on the cell placing positions 101 on two sides of the water cooling belt 1 by the left pressing plate 602 and the right pressing plate 603, the positioning pins 604 are inserted into the positioning holes 605. Specifically, the positioning pins 604 are provided at both ends of the right pressing plate 603, and the positioning holes 605 are provided at both ends of the left pressing plate 602. The positioning pin 604 is a cylindrical pin, and the positioning hole 605 is a round hole.
In this embodiment, two side walls of one end of the tooling plate 601 are respectively provided with a boss 606, one bottoms of one ends of the left pressing plate 602 and the right pressing plate 603 are respectively provided with a notch 607, and when the left pressing plate 602, the right pressing plate 603 and the tooling plate 601 are combined, the boss 606 is inserted into the notch 607. Specifically, when the left pressing plate 602 and the right pressing plate 603 move towards the water cooling belt 1 and are pressed to the large cylindrical battery cell 2, the notches 607 on the left pressing plate 602 and the right pressing plate 603 are aligned with the bosses 606 on the tooling plate 3 for insertion, so that the relative positions of the tooling plate 601 and the left pressing plate 602 and the right pressing plate 603 can be ensured to be accurate, and the assembly precision of the large cylindrical battery cell 2 and the water cooling belt 1 is further ensured.
Referring to fig. 6 to 9, in step S2, a water-cooled tape coated with a heat conductive structural adhesive is placed on a tooling plate of a water-cooled tape lamination tooling.
The tooling plate 601 is provided with a plurality of limiting plates 7, and the limiting plates 7 are respectively arranged on two sides of the water cooling belt 1 and used for limiting the water cooling belt 1. Specifically, two pairs of limiting plates 7 are respectively arranged on two side surfaces of two ends of the water cooling belt 1, and the water cooling belt 1 is clamped by the opposite limiting plates 7, so that the limitation of the water cooling belt 1 is realized. The limiting plate 12 is fixed on the tooling plate 3 by welding or screw connection.
The limiting plate 7 is provided with a step, the step 121 is a plane, and the water cooling belt 1 is placed on the step 121, so that the water cooling belt 1 is supported. The face that water cooling belt 1 and limiting plate 12 contacted is the arc surface too, has two to be the arc surface and can prevent that water cooling belt 1 from at its length direction drunkenness, combines the step, and a plurality of limiting plates 7 can be spacing water cooling belt 1 in a plurality of directions, guarantees the stability of water cooling belt 1 on tooling plate 601.
Referring to fig. 10, in step S3, a plurality of cell groups are placed in the tray 3.
Specifically, through step S1 and step S2, the fabrication of a plurality of battery cell groups can be completed, the bottom of the tray 3 is provided with a battery cell positioning groove 301, the battery cell groups are sequentially clamped and placed into the tray 3 by using an executing mechanism, and each large cylindrical battery cell 2 in the battery cell group is placed into the corresponding battery cell positioning groove 301. Each large cylindrical cell 2 corresponds to one cell positioning groove 601, so that the positioning of the cell group on the tray 6 can be better ensured. The cell positioning groove 301 is a circular groove, and when the large cylindrical cell 2 is stuck on the side wall of the water cooling belt 1, the bottom end of the large cylindrical cell extends out of a part; when the cell stack is placed on the tray 3, a portion of the large cylindrical cell 2 protruding is inserted into the circular recess.
Referring to fig. 11, in step S4, the collecting cover plate cover 4 is provided on top of all the cell groups.
Specifically, in order to further guarantee the positioning accuracy between collection apron lid 4 and the electric core group, be equipped with the lateral wall around the tray 3, tray 3 and lateral wall form the casing, the top surface of lateral wall is equipped with a plurality of locating holes, be equipped with the locating pin that corresponds with the locating hole on the collection apron 4, when establishing the top of all electric core groups with collection apron lid 4, the locating pin inserts and establishes in the locating hole, realize collecting the location of apron 4 and tray 3, big cylinder electric core 2 is all placed in the electric core constant head tank 301 of settlement, big cylinder electric core 2 and 3 position fixing, thereby realize collecting the location between apron 4 and the electric core group.
Referring to fig. 12, in step S5, the collecting cover plate 4 is pressed on top of all the cell groups by the welding jig plate 5, and the bus bar 401 on the collecting cover plate 4 is connected with the electrode of each large cylindrical cell 2.
Specifically, referring to fig. 13 and 14, the collecting cover plate 4 is an insulated support plate, and the support plate is provided with a busbar 401, and the busbar 401 is fixed on the support plate in a riveting or injection molding connection mode, so that the busbar 401 is fixed on the collecting cover plate 4, and the busbar 401 can realize that large cylindrical cells 2 in the cell group are connected in series and the cell group is connected in parallel. The collecting cover plate 4 is provided with a special-shaped hole 402 corresponding to each large cylindrical cell 2, and the connecting end of the busbar 401 and the electrode of the large cylindrical cell 2 is arranged in the special-shaped hole 402.
Welding holes 501 are formed in the welding position of each busbar 401 on the welding tooling plate 5, the welding equipment welds the busbar 401 and the electrode of the large cylindrical battery cell 2 together through the welding holes 501, protrusions 502 are arranged on the side edges of the welding holes 501, the busbar 401 is pressed on the electrode of the large cylindrical battery cell 2 through the protrusions 502, and the protrusions 502 press the busbar 401 during welding, so that welding quality is guaranteed.
The collecting cover plate 4 and the welding tooling plate 5 can be respectively provided with a locating pin and a locating hole, and the locating between the collecting cover plate 4 and the welding tooling plate is realized by a pin hole matched connection locating mode, so that the relative positions of the collecting cover plate and the welding tooling plate are ensured.
The collection cover plate 4 can also integrate and collect the pencil, for later stage battery module communication use.
In step S5, the bus bar 401 on the collecting cover 4 is connected to the electrode of each large cylindrical cell 2.
Specifically, the busbar 401 is welded to the electrode of the large cylindrical cell 2 by the integral welding tooling plate 5 in a pressing manner, and the welding tooling plate 5 is required to be positioned and matched according to the collecting cover plate 4 in design so as to ensure the accuracy of the relative positions of the pressing protrusion 502 and the pressed busbar 401.
Referring to fig. 15, the collecting cover plate 4 needs to be divided into different areas during welding, and the busbar 401 and the electrode of the large cylindrical cell 2 are pressed and welded by the divided areas. For example, the area a is pressed first, after the busbar 401 in the welding hole 501 in the area a is welded, the area b is pressed, and so on until the busbar 401 is welded, the positioning can be performed through the welding hole 501 arranged on the welding tooling plate 5 when the busbar 401 is welded by laser, so that the safety and the reliability are ensured.
After the welding is finished, the welding tooling plate 5 is removed, and insulating glue is poured into the whole large cylindrical battery module, so that the fixed connection of the inner parts of the large cylindrical battery module is realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The large-cylinder battery module assembly method is characterized by comprising the following steps of:
coating heat conduction structural adhesive on the cell placement position of the water-cooled band;
pressing each large cylindrical battery cell respectively, and adhering the large cylindrical battery cells to each battery cell placing position through the heat conducting structure adhesive to enable the water cooling belt and the large cylindrical battery cells to be combined into a battery cell group;
placing a plurality of the cell groups into a tray;
covering the acquisition cover plate on the tops of all the battery cell groups;
the collecting cover plates are pressed on the tops of all the battery cell groups through the welding tool plates, the bus bars on the collecting cover plates are connected with the electrodes of each large cylindrical battery cell, and the welding tool plates are removed to complete the assembly of the large cylindrical battery module.
2. The method of assembling a large cylindrical battery module according to claim 1, wherein pressing each large cylindrical battery cell onto each of the battery cell placement sites, respectively, comprises:
placing the water-cooling belt coated with the heat-conducting structural adhesive on a tooling plate of a water-cooling belt pressing tooling;
and respectively placing each large cylindrical battery cell on a battery cell placing position on the water cooling belt, pressing the large cylindrical battery cells on the battery cell placing position through a pressing plate of the water cooling belt pressing tool, and removing the water cooling belt pressing tool to combine the water cooling belt and the battery cells into a battery cell group.
3. The assembling method of the large cylindrical battery module according to claim 2, wherein the placing of the water-cooled tape coated with the heat conductive structural adhesive onto the tooling plate of the water-cooled tape press-fit tooling comprises:
the tooling plate is provided with a plurality of limiting plates, the limiting plates are respectively arranged on two sides of the water cooling belt and used for limiting the water cooling belt.
4. The assembling method of the large cylindrical battery module according to claim 3, wherein the limiting plates are respectively provided at both sides of the water cooling belt, comprising:
the limiting plate is provided with a step, and the water cooling belt is placed on the step and used for supporting the water cooling belt.
5. The method for assembling a large cylindrical battery module according to claim 2, wherein pressing the large cylindrical battery cell on the battery cell placement site by a pressing plate of a water-cooled belt pressing tool comprises:
the pressing plate comprises a left pressing plate and a left pressing plate, and the large cylindrical battery cell voltage is respectively pressed on the battery cell placing positions on two sides of the water cooling belt through the left pressing plate and the right pressing plate.
6. The large cylindrical battery module assembly method according to claim 5, wherein pressing the large cylindrical battery cells on the battery cell placement sites on both sides of the water-cooled belt by the left and right pressing plates, respectively, comprises:
the left pressing plate and one of the two ends of the right pressing plate are respectively provided with a positioning pin, the other two ends of the left pressing plate and the right pressing plate are respectively provided with positioning holes matched with the positioning pins, and when the large cylindrical battery cell voltage is respectively pressed on the battery cell placing positions on the two sides of the water cooling belt through the left pressing plate and the right pressing plate, the positioning pins are inserted into the positioning holes.
7. The large cylindrical battery module assembly method according to claim 1, wherein placing a plurality of the cell groups into a tray comprises:
and a battery cell positioning groove is formed in the bottom of the tray, and each large cylindrical battery cell in the battery cell group is placed in the corresponding battery cell positioning groove.
8. The method of assembling a large cylindrical battery module according to claim 1, wherein a collecting cover plate is provided on top of all the cell groups, comprising:
the tray is provided with side walls around, the tray with the side walls form the casing, the top surface of side walls is equipped with a plurality of locating holes, gather be equipped with on the apron with the locating pin that the locating hole corresponds, will gather the apron lid and establish when all the top of electric core group, the locating pin inserts and establishes in the locating hole.
9. The large cylindrical battery module assembly method according to claim 1, wherein the collecting cover plate is pressed on the top of all the battery cells by a welding tool plate, and the bus bar of the collecting cover plate is connected with the electrode of each large cylindrical battery cell, comprising:
and each busbar welding position on the welding tooling plate is provided with a welding hole, and the side edge of each welding hole is provided with a bulge, so that the busbar is pressed on the electrode of the large cylindrical battery cell through the bulge.
10. The method of assembling a large cylindrical battery module according to claim 1, wherein connecting the bus bar on the collecting cover plate with the electrode of each large cylindrical cell comprises:
dividing the collecting cover plate into different areas, and performing press welding on the busbar and the electrode of the large cylindrical battery cell in the areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311097156.1A CN117080532A (en) | 2023-08-28 | 2023-08-28 | Large cylindrical battery module assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311097156.1A CN117080532A (en) | 2023-08-28 | 2023-08-28 | Large cylindrical battery module assembly method |
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| Publication Number | Publication Date |
|---|---|
| CN117080532A true CN117080532A (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311097156.1A Pending CN117080532A (en) | 2023-08-28 | 2023-08-28 | Large cylindrical battery module assembly method |
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| Country | Link |
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| CN (1) | CN117080532A (en) |
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- 2023-08-28 CN CN202311097156.1A patent/CN117080532A/en active Pending
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