CN113809463A - Battery pack, module tool and battery pack assembling method - Google Patents

Battery pack, module tool and battery pack assembling method Download PDF

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Publication number
CN113809463A
CN113809463A CN202111086502.7A CN202111086502A CN113809463A CN 113809463 A CN113809463 A CN 113809463A CN 202111086502 A CN202111086502 A CN 202111086502A CN 113809463 A CN113809463 A CN 113809463A
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CN
China
Prior art keywords
module
lug plate
tray
plate
battery
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111086502.7A
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Chinese (zh)
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CN113809463B (en
Inventor
沈骏安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saic General Power Technology Shanghai Co ltd
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
Original Assignee
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
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Application filed by SAIC General Motors Corp Ltd, Pan Asia Technical Automotive Center Co Ltd filed Critical SAIC General Motors Corp Ltd
Priority to CN202111086502.7A priority Critical patent/CN113809463B/en
Publication of CN113809463A publication Critical patent/CN113809463A/en
Application granted granted Critical
Publication of CN113809463B publication Critical patent/CN113809463B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention discloses a battery pack, a module tool and a battery pack assembling method. The battery pack comprises a battery tray and a battery module arranged on the battery tray, a positioning pin is not required to be arranged on the battery module, the battery module is positioned between two tray cross beams of the battery tray by the positioning pin of the module tooling, and the module tooling is taken down after the battery module is arranged on the battery tray, so that the battery pack is convenient to install and reduces the structural weight.

Description

Battery pack, module tool and battery pack assembling method
Technical Field
The invention relates to the technical field of automobile batteries, in particular to a battery pack, a module tool and a battery pack assembling method.
Background
At present, most automobile host factories select square battery modules to match with steel/aluminum battery trays, and more battery modules need to be arranged in a narrow space of a battery pack as much as possible due to the continuous improvement of the requirement on endurance. In the prior art, a battery module is provided with a positioning pin and inserted into a positioning hole of a tray beam for positioning, a floating amount of 0.1mm-0.2mm needs to be reserved, and the positioning pin is always reserved on the battery module before and after the battery module is installed, so that the installation space is occupied on one hand, the weight of the battery module is increased on the other hand, and higher requirements on the structure, the precision and the like of the battery module are provided.
Disclosure of Invention
The invention aims to provide a battery pack, a module tooling and a battery pack assembling method.
The technical scheme of the invention provides a battery pack, which comprises a square battery tray and a square battery module;
more than two tray beams are arranged on the battery tray at intervals along the width direction;
the tray beam is provided with a first through hole for a locking bolt to pass through and a second through hole for a positioning pin of a module tooling for clamping and moving the battery module to pass through;
a locking nut is welded in the tray beam below the first through hole;
the two sides of the battery module along the length direction are respectively provided with a first lug plate, a second lug plate and a third lug plate, and the second lug plate is positioned between the first lug plate and the third lug plate;
third through holes for the locking bolts to penetrate through are formed in the first lug plate, the second lug plate and the third lug plate respectively;
the first ear plate is also provided with a waist-shaped positioning hole for one positioning pin to pass through, and the third ear plate is provided with a circular positioning hole for one positioning pin to pass through;
the two sides of the battery module along the length direction are respectively provided with a slot used for being matched with a clamping jaw of the module tool, and the first lug plate, the second lug plate and the third lug plate are all positioned below the slots;
the battery module passes through the module frock location is two between the tray crossbeam, first otic placode the second otic placode reaches the third otic placode is all taken on the tray crossbeam, first otic placode the second otic placode reaches the third otic placode is respectively through one the locking bolt with the tray crossbeam is connected, the locking bolt passes the third through-hole reaches first through-hole, and with lock nut connects.
In an alternative embodiment, the first ear plate, the second ear plate and the third ear plate on one side of the battery module are arranged at intervals along a front-to-back direction;
the first lug plate, the second lug plate and the third lug plate on the other side of the battery module are arranged at intervals along the direction from back to front.
In an optional technical solution, the first ear plate on one side of the battery module is located between the second ear plate and the third ear plate on the other side of the battery module.
In an optional technical solution, the waist-shaped positioning hole extends along a length direction of the battery module.
The technical scheme of the invention also provides a module tooling special for assembling the battery pack, and the module tooling is used for positioning the battery module between the two tray cross beams of the battery tray;
the module tool comprises a tool support and a handle arranged on the tool support;
two sides of the tool support are respectively provided with two positioning pins and two clamping jaws.
In an optional technical scheme, the clamping jaw is mounted on the tool support through an adjusting mechanism, and the clamping jaw can move along the width direction of the tool support.
In one optional technical scheme, the adjusting mechanism comprises a guide rail fixedly mounted on the tool support, a guide rail sleeve in sliding connection with the guide rail, and a driving device for driving the guide rail sleeve to move on the guide rail;
the clamping jaw comprises a vertically extending clamping jaw main plate and a horizontally extending clamping jaw inserting plate, and the clamping jaw inserting plate is connected with the clamping jaw main plate to form an L shape;
the clamping jaw inserting plate is connected to the lower end of the clamping jaw main plate and faces towards the inner side of the tool support to extend, and the upper end of the clamping jaw main plate is connected with the guide rail sleeve.
In one optional technical scheme, the two positioning pins on two sides of the tool support are arranged in a staggered mode.
In one optional technical scheme, the positioning pin comprises a positioning pin rod body, a positioning pin sleeve sleeved on the positioning pin rod body and an expansion spring;
the tool support is provided with an installation block, and the upper end of the positioning pin rod body is installed on the installation block;
the upper end of the locating pin sleeve is provided with a check ring, and the expansion spring is connected between the mounting block and the check ring;
the lower end of the positioning sleeve is provided with a tip part.
The technical scheme of the invention also provides an assembly method for assembling the battery pack by adopting the module tool, which comprises the following steps:
s01: one positioning pin on each side of the module tooling penetrates through a waist-shaped positioning hole on a first lug plate of the battery module, and the other positioning pin penetrates through a circular positioning hole on a third lug plate of the battery module;
s02: inserting clamping jaws at two sides of a module tool into slots at two sides of a battery module;
s03: moving the battery module to the position above the battery tray and between the two tray cross beams through the module tooling, and aligning the positioning pin with the second through hole on the tray cross beam;
s04: moving the module tool downwards to enable the positioning pins to be inserted into the corresponding second through holes, and enabling the first lug plate, the second lug plate and the third lug plate to be lapped on the tray beam and the third through holes on the first lug plate, the second lug plate and the third lug plate to be aligned with the first through holes on the tray beam;
s05: the first lug plate, the second lug plate and the third lug plate are locked on the tray beam through locking bolts, and the locking bolts penetrate through the third through holes and the first through holes and are connected with locking nuts;
s06: and loosening the clamping jaw, moving the module tool upwards, and taking the module tool down from the battery module.
By adopting the technical scheme, the method has the following beneficial effects:
according to the battery pack, the module tool and the assembly method of the battery pack, locating pins are not needed to be arranged on the battery module, the battery module is located between the two tray cross beams of the battery tray by the locating pins of the module tool, the module tool is taken down after the battery module is installed on the battery tray, the battery pack is convenient to install, and the structural weight is reduced.
Drawings
Fig. 1 is an exploded view of a module tooling, a battery module and a battery tray according to an embodiment of the present invention;
fig. 2 is a plan view of a portion of a battery module mounted on a battery tray;
FIG. 3 is a top view of a battery tray;
fig. 4 is a perspective view of the battery module;
fig. 5 is a top view of the battery module;
FIG. 6 is a schematic view of a locking bolt engaged with a locking nut in a pallet beam;
FIG. 7 is a perspective view of the die set tool;
FIG. 8 is a side view of the die set tool;
fig. 9 is a perspective view of the module tooling clamping the battery module;
FIG. 10 is a schematic view of an adjustment mechanism;
FIG. 11 is a cross-sectional view of the locating pin;
fig. 12 is a schematic view of the insertion of the jaw insertion plate of the jaw into the slot of the battery module.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 9 and 12, a battery pack according to an embodiment of the present invention includes a square battery tray 1 and a square battery module 2.
Two or more tray cross members 11 are arranged at intervals in the width direction on the battery tray 1.
The tray beam 1 is provided with a first through hole 12 for the locking bolt 5 to pass through and a second through hole 13 for the positioning pin 33 of the module tooling 3 for clamping the mobile battery module 2 to pass through.
And a locking nut 4 is welded in the tray beam 1 below the first through hole 12.
The battery module 2 is provided with a first lug plate 21, a second lug plate 22 and a third lug plate 23 on both sides in the length direction, respectively, and the second lug plate 22 is located between the first lug plate 21 and the third lug plate 23.
The first lug plate 21, the second lug plate 22 and the third lug plate 23 are respectively provided with a third through hole 25 for the locking bolt 5 to pass through.
The first ear plate 21 is further provided with a waist-shaped positioning hole 26 for passing a positioning pin 33, and the third ear plate 23 is provided with a circular positioning hole 27 for passing a positioning pin 33.
The battery module 2 is provided with slots 24 along both sides of the length direction for matching with the clamping jaws 34 of the module tooling 3, and the first lug plate 21, the second lug plate 22 and the third lug plate 23 are all positioned below the slots 24.
The battery module 2 is positioned between the two tray cross beams 11 through the module tooling 3, the first lug plate 21, the second lug plate 22 and the third lug plate 23 are all lapped on the tray cross beams 11, the first lug plate 21, the second lug plate 22 and the third lug plate 23 are respectively connected with the tray cross beams 11 through the locking bolt 5, and the locking bolt 5 penetrates through the third through hole 25 and the first through hole 12 and is connected with the locking nut 4.
The battery pack provided by the invention is a power battery of a new energy automobile. The battery pack has a battery tray 1 and a battery module 2, and the battery module 2 is protected by a protective case. The protective shell is a box body, and the top of the protective shell is provided with a top cover. The battery tray 1 is a bottom cover or a bottom plate of the protective case.
The battery tray 1 and the battery module 2 are both square, specifically rectangular. A plurality of battery modules 2 are mounted on the battery tray 1.
Two or more tray beams 11 are arranged on the battery tray 1 at intervals, and the tray beams 11 extend in the width direction of the battery tray 1. A space for mounting the battery module 2 is formed between the two tray cross members 11.
The pallet cross member 1 has a plurality of first through holes 12 and a plurality of second through holes 13. The first through-hole 12 is used for the passage of a locking bolt 5 for connection with a locking nut 4 welded in the pallet beam 1. Tray crossbeam 1 is the U-shaped structure, and first through-hole 12 and second through-hole 13 set up on tray crossbeam 1's roof, and lock nut 4 welds on the bottom surface of tray crossbeam 1's roof, and lock nut 4 arranges with first through-hole 12 is coaxial.
The second through hole 13 is used for the positioning pin 33 of the die set tool 3 to pass through for positioning. The module tooling 3 is used to clamp and move the battery module 2 to position the battery module 2 between the two tray beams 11.
The first ear plate 21, the second ear plate 22 and the third ear plate 23 are respectively arranged on two sides of the battery module 2, and the second ear plate 22 is positioned between the first ear plate 21 and the third ear plate 23. The first ear plate 21, the second ear plate 22, and the third ear plate 23 are provided on the long-side plates of the battery module 2. The first ear panel 21, the second ear panel 22 and the third ear panel 23 are turned out horizontally from the long side panel. The first ear plate 21, the second ear plate 22 and the third ear plate 23 are respectively provided with a third through hole 25, and the third through hole 25 is used for the locking bolt 5 to pass through so as to lock the first ear plate 21, the second ear plate 22 and the third ear plate 23 with the pallet cross beam 11.
A waist-shaped positioning hole 26 is formed in the first ear plate 21 on one side of the third through hole 25, the waist-shaped positioning hole 26 is used for a positioning pin 33 to pass through, and the positioning pin 33 can move appropriately in the waist-shaped positioning hole 26 to adjust the position. A circular positioning hole 27 is provided in the third ear plate 23 on the side of the third through hole 25, the circular positioning hole 27 is used for the positioning pin 33 to pass through, and the positioning pin 33 cannot move laterally in the circular positioning hole 27.
The battery module 2 is provided at both sides thereof with insertion grooves 24, respectively, for insertion with the clamping jaws 34 of the module fixture 3 to clamp the battery module 2. The slot 24 is provided on the long-side plate of the battery module 2, and the first lug plate 21, the second lug plate 22, and the third lug plate 23 are all located below the slot 24.
Battery module 2 passes through module frock 3 and fixes a position between two tray crossbeam 11, and concrete assembly mode is as follows:
the first step is as follows: one positioning pin 33 on each side of the module tooling 3 is passed through the kidney-shaped positioning hole 26 in the first lug plate 21 of the battery module 2, and the other positioning pin 33 is passed through the circular positioning hole 27 in the third lug plate 23 of the battery module 2.
The second step is that: the clamping jaws 34 on both sides of the module fixture 3 are inserted into the insertion grooves 24 on both sides of the battery module 2.
The third step: the battery module 2 is moved to the upper side of the battery tray 1 by the module tooling 3 and is positioned between the two tray beams 11, and the positioning pins 33 are aligned with the second through holes 13 on the tray beams 1.
The fourth step: the module fixture 3 is moved downward so that the positioning pins 33 are inserted into the corresponding second through holes 13, the first ear plate 21, the second ear plate 22 and the third ear plate 23 are all lapped on the tray cross member 11, and the third through holes 25 on the first ear plate 21, the second ear plate 22 and the third ear plate 23 are all aligned with the first through holes 12 on the tray cross member 11.
The fifth step: the first lug plate 21, the second lug plate 22 and the third lug plate 23 are locked to the pallet cross member 11 by the locking bolt 5, and the locking bolt 5 passes through the third through hole 25 and the first through hole 12 and is connected to the locking nut 4.
And a sixth step: the clamping jaws 34 are loosened, the module tooling 3 is moved upwards, and the module tooling 3 is taken down from the battery module 2.
Therefore, according to the battery pack provided by the invention, the battery module 2 is not required to be provided with a positioning pin, the battery module 2 is positioned between the two tray beams 11 of the battery tray 1 by adopting the positioning pin 33 of the module tooling 3, and after the battery module 2 is installed on the battery tray 1, the module tooling 3 is taken down, so that the installation is convenient, and the structural weight is reduced.
In one embodiment, as shown in fig. 4 to 5, the first ear plate 21, the second ear plate 22 and the third ear plate 23 on one side of the battery module 2 are arranged at intervals in the front-to-rear direction.
The first lug plate 21, the second lug plate 22, and the third lug plate 23 on the other side of the battery module 2 are arranged at intervals in the direction from the rear to the front.
That is, the first ear plate 21, the second ear plate 22 and the third ear plate 23 on both sides are oppositely arranged, and if the first ear plate 21, the second ear plate 22 and the third ear plate 23 on the first side are arranged at intervals in the front-to-rear direction, the first ear plate 21, the second ear plate 22 and the third ear plate 23 on the second side are arranged at intervals in the rear-to-front direction. Because the positioning pin 33 on each side can only be finely adjusted in the waist-shaped positioning hole 26 of the first ear plate 21, the first ear plate 21 on one side is forward, and the first ear plate 21 on the other side is backward, the front end and the tail end of the battery module 2 can be finely adjusted, so that the third through hole 25 is aligned with the first through hole 12.
In one embodiment, as shown in fig. 4-5, the first ear plate 21 on one side of the battery module 2 is positioned between the second ear plate 22 and the third ear plate 23 on the other side of the battery module 2.
That is, the first ear plate 21, the second ear plate 22 and the third ear plate 23 on both sides are not aligned and are staggered, and the first ear plate 21 on each side is located between the second ear plate 22 and the third ear plate 23 on the other side, so that the fastening bolts 5 on both sides are also staggered and fastened with the pallet cross beam 11.
In one embodiment, as shown in fig. 4 to 5, the waist-shaped positioning holes 26 extend along the length direction of the battery module 2, and the positioning pins 33 can be finely adjusted in the waist-shaped positioning holes 26 along the length direction of the battery module 2 during fine adjustment.
As shown in fig. 7-9, an embodiment of the present invention provides a module tooling 3 specifically for assembling a battery pack, wherein the module tooling 3 is used for positioning a battery module 2 between two tray beams 11 of a battery tray 1.
The module fixture 3 includes a fixture holder 31 and a handle 32 provided on the fixture holder 31.
Two positioning pins 33 and two clamping jaws 34 are respectively arranged on two sides of the tool support 31 along the length direction.
The module tool 3 provided by the invention is specially used for assembling the battery pack in the embodiment. The module tooling 3 is used for positioning the battery module 2 between the two tray beams 11 of the battery tray 1.
The module tooling 3 comprises a tooling support 31, a handle 32 arranged on the tooling support 31, positioning pins 33 arranged on two sides of the tooling support 31 and clamping jaws 34.
The positioning pin 33 and the clamping jaw 34 are on the same side of the tool holder 31. Two positioning pins 33 and two clamping jaws 34 are arranged on two opposite sides of the tool holder 31. Two positioning pins 33 are arranged at two ends of the tool support 31, and two clamping jaws 34 are arranged between the two positioning pins 33.
One positioning pin 33 on each side is used for passing through the waist-shaped positioning hole 26 on the first ear plate 21 and inserting into the first through hole 12 on the tray cross beam 11 for positioning, and the other positioning pin 33 on each side is used for passing through the circular positioning hole 27 on the third ear plate 23 and inserting into the first through hole 12 on the tray cross beam 11 for positioning. The clamping jaws 34 are adapted to be inserted into the insertion grooves 24 at the sides of the battery module 2 to clamp the battery module 2 in motion. The operator can hold the handle 32 for operation.
In one embodiment, as shown in fig. 7, the clamping jaw 34 is mounted on the tool holder 31 through an adjusting mechanism 35, and the clamping jaw 34 can move along the width direction of the tool holder 31 to be conveniently matched with and separated from the slot 24. When it is necessary to clamp the battery module 2, the adjusting mechanism 35 moves the clamping jaw 34 toward the slot 24 and inserts into the slot 24. When the module tooling 3 needs to be removed from the battery module 2, the adjusting mechanism 35 drives the clamping jaws 34 to leave the slots 24.
In one embodiment, as shown in fig. 7 and 10, the adjusting mechanism 35 includes a guide rail 351 fixedly mounted on the tool holder 31, a guide rail sleeve 352 slidably connected to the guide rail 351, and a driving device 353 for driving the guide rail sleeve 352 to move on the guide rail 351.
The clamping jaw 34 comprises a clamping jaw main plate 341 extending vertically and a clamping jaw inserting plate 342 extending horizontally, and the clamping jaw inserting plate 342 is connected with the clamping jaw main plate 341 to form an L shape.
The clamping jaw inserting plate 342 is connected to the lower end of the clamping jaw main plate 341 and extends towards the inner side of the tool support 3, and the upper end of the clamping jaw main plate 341 is connected with the guide rail sleeve 352.
The guide rail 351 is fixedly installed on the tool holder 31, and is perpendicular to the length direction of the battery module 2, that is, extends in the width direction of the battery module 2 or the tool holder 31. The guide sleeve 352 may be a sliding sleeve or a sliding block, etc., which is slidably connected with the guide rail 351. The drive unit 353 may be a piston. The driving unit 353 is installed on the guide rail 351 or on the tool holder 31, and an output end thereof is connected to the guide rail housing 352, so that the guide rail housing 352 can be driven to reciprocate along the guide rail 351.
The clamping jaw 34 is L-shaped, and includes a clamping jaw main plate 341 extending vertically and a clamping jaw inserting plate 342 extending horizontally, the clamping jaw inserting plate 342 is connected to the lower end of the clamping jaw main plate 341 and extends toward the inner side of the tool holder 3, and the upper end of the clamping jaw main plate 341 is connected to the guide rail sleeve 352.
When the guide rail sleeve 352 moves, the main jaw plate 341 moves, and the insert jaw plate 342 moves to insert into the slot 24 or leave the slot 24.
When the jaw insert 342 is inserted into the slot 24, the jaw insert 342 abuts the first ear plate 21 or the third ear plate 23.
In one embodiment, as shown in fig. 7-8, the two positioning pins 33 on the two sides of the tool holder 31 are staggered to match the first ear plate 21 and the third ear plate 23 staggered on the two sides of the battery module 2.
In one embodiment, as shown in fig. 8 and 11, the positioning pin 33 includes a positioning pin rod body 331, a positioning pin sleeve 332 sleeved on the positioning pin rod body 331, and an expansion spring 333.
The tool support 31 is provided with an installation block 36, and the upper end of the positioning pin rod body 331 is installed on the installation block 36.
The upper end of the positioning pin sleeve 332 has a retaining ring 3321, and an expansion spring 333 is connected between the mounting block 36 and the retaining ring 3321.
The lower end of the locator sleeve 332 has a tip portion 3322.
Under normal conditions, the expansion spring 333 drives the positioning pin sleeve 332 to extend downwards on the positioning pin rod body 331 as far as possible, and the tip portion 3322 can be inserted into the corresponding second through hole 13 to realize positioning before the battery module 2 is placed on the tray cross member 11. When something is blocked under the positioning pin sleeve 332, the positioning pin sleeve 332 can slide upwards along the positioning pin rod body 331 and compress the expansion spring 333, so that different installation conditions can be adapted. The retainer 3321 is used for installing the lower end of the expansion spring 333 and for limiting the position, the diameter of the retainer 3321 is larger than the diameter of the circular positioning hole 27 and the width of the kidney-shaped positioning hole 26, and when the retainer 3321 is stopped by the first lug plate 21 or the third lug plate 23, the positioning pin 33 cannot move downwards any more. The pointed portion 3322 is more easily inserted into the hole for quick insertion and guiding.
Referring to fig. 1 to 12, an assembly method for assembling a battery pack by using a module tooling 3 according to an embodiment of the present invention includes the following steps:
s01: one positioning pin 33 on each side of the module tooling 3 is passed through the kidney-shaped positioning hole 26 in the first lug plate 21 of the battery module 2, and the other positioning pin 33 is passed through the circular positioning hole 27 in the third lug plate 23 of the battery module 2.
S02: the clamping jaws 34 on both sides of the module fixture 3 are inserted into the insertion grooves 24 on both sides of the battery module 2.
S03: the battery module 2 is moved to the upper side of the battery tray 1 by the module tooling 3 and is positioned between the two tray beams 11, and the positioning pins 33 are aligned with the second through holes 13 on the tray beams 1.
S04: the module fixture 3 is moved downward so that the positioning pins 33 are inserted into the corresponding second through holes 13, the first ear plate 21, the second ear plate 22 and the third ear plate 23 are all lapped on the tray cross member 11, and the third through holes 25 on the first ear plate 21, the second ear plate 22 and the third ear plate 23 are all aligned with the first through holes 12 on the tray cross member 11.
S05: the first lug plate 21, the second lug plate 22 and the third lug plate 23 are locked to the pallet cross member 11 by the locking bolt 5, and the locking bolt 5 passes through the third through hole 25 and the first through hole 12 and is connected to the locking nut 4.
S06: the clamping jaws 34 are loosened, the module tooling 3 is moved upwards, and the module tooling 3 is taken down from the battery module 2.
In summary, according to the battery pack, the module tooling and the assembly method of the battery pack provided by the invention, the battery module 2 does not need to be provided with a positioning pin, the positioning pin 33 of the module tooling 3 is adopted to position the battery module 2 between the two tray beams 11 of the battery tray 11, and after the battery module 2 is installed on the battery tray 1, the module tooling 3 is taken down, so that the installation is convenient, and the structural weight is reduced.
According to the needs, the above technical schemes can be combined to achieve the best technical effect.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.

Claims (10)

1. A battery pack is characterized by comprising a square battery tray and a square battery module;
more than two tray beams are arranged on the battery tray at intervals along the width direction;
the tray beam is provided with a first through hole for a locking bolt to pass through and a second through hole for a positioning pin of a module tooling for clamping and moving the battery module to pass through;
a locking nut is welded in the tray beam below the first through hole;
the two sides of the battery module along the length direction are respectively provided with a first lug plate, a second lug plate and a third lug plate, and the second lug plate is positioned between the first lug plate and the third lug plate;
third through holes for the locking bolts to penetrate through are formed in the first lug plate, the second lug plate and the third lug plate respectively;
the first ear plate is also provided with a waist-shaped positioning hole for one positioning pin to pass through, and the third ear plate is provided with a circular positioning hole for one positioning pin to pass through;
the two sides of the battery module along the length direction are respectively provided with a slot used for being matched with a clamping jaw of the module tool, and the first lug plate, the second lug plate and the third lug plate are all positioned below the slots;
the battery module passes through the module frock location is two between the tray crossbeam, first otic placode the second otic placode reaches the third otic placode is all taken on the tray crossbeam, first otic placode the second otic placode reaches the third otic placode is respectively through one the locking bolt with the tray crossbeam is connected, the locking bolt passes the third through-hole reaches first through-hole, and with lock nut connects.
2. The battery pack according to claim 1, wherein the first, second, and third ear plates on one side of the battery module are arranged at intervals in a front-to-rear direction;
the first lug plate, the second lug plate and the third lug plate on the other side of the battery module are arranged at intervals along the direction from back to front.
3. The battery pack of claim 2, wherein the first ear plate on one side of the battery module is between the second ear plate and the third ear plate on the other side of the battery module.
4. The battery pack according to claim 1, wherein the waist-shaped positioning holes extend in a length direction of the battery module.
5. A module tooling dedicated to the assembly of the battery pack of any one of claims 1-4, wherein the module tooling is used to position the battery module between the two tray beams of the battery tray;
the module tool comprises a tool support and a handle arranged on the tool support;
two sides of the tool support are respectively provided with two positioning pins and two clamping jaws.
6. The die set tool according to claim 5, wherein the clamping jaw is mounted on the tool holder by an adjusting mechanism, and the clamping jaw can move along the width direction of the tool holder.
7. The die set tool according to claim 6, wherein the adjusting mechanism comprises a guide rail fixedly mounted on the tool support, a guide rail sleeve slidably connected with the guide rail, and a driving device for driving the guide rail sleeve to move on the guide rail;
the clamping jaw comprises a vertically extending clamping jaw main plate and a horizontally extending clamping jaw inserting plate, and the clamping jaw inserting plate is connected with the clamping jaw main plate to form an L shape;
the clamping jaw inserting plate is connected to the lower end of the clamping jaw main plate and faces towards the inner side of the tool support to extend, and the upper end of the clamping jaw main plate is connected with the guide rail sleeve.
8. The die set tool according to claim 6, wherein the two positioning pins on two sides of the tool support are arranged in a staggered manner.
9. The die set tool according to claim 6, wherein the positioning pin comprises a positioning pin rod body, a positioning pin sleeve sleeved on the positioning pin rod body and an expansion spring;
the tool support is provided with an installation block, and the upper end of the positioning pin rod body is installed on the installation block;
the upper end of the locating pin sleeve is provided with a check ring, and the expansion spring is connected between the mounting block and the check ring;
the lower end of the positioning sleeve is provided with a tip part.
10. An assembling method for assembling the battery pack according to any one of claims 1 to 4 by using the module tool according to any one of claims 5 to 9, comprising the steps of:
s01: one positioning pin on each side of the module tooling penetrates through a waist-shaped positioning hole on a first lug plate of the battery module, and the other positioning pin penetrates through a circular positioning hole on a third lug plate of the battery module;
s02: inserting clamping jaws at two sides of a module tool into slots at two sides of a battery module;
s03: moving the battery module to the position above the battery tray and between the two tray cross beams through the module tooling, and aligning the positioning pin with the second through hole on the tray cross beam;
s04: moving the module tool downwards to enable the positioning pins to be inserted into the corresponding second through holes, and enabling the first lug plate, the second lug plate and the third lug plate to be lapped on the tray beam and the third through holes on the first lug plate, the second lug plate and the third lug plate to be aligned with the first through holes on the tray beam;
s05: the first lug plate, the second lug plate and the third lug plate are locked on the tray beam through locking bolts, and the locking bolts penetrate through the third through holes and the first through holes and are connected with locking nuts;
s06: and loosening the clamping jaw, moving the module tool upwards, and taking the module tool down from the battery module.
CN202111086502.7A 2021-09-16 2021-09-16 Battery pack, module tool and battery pack assembling method Active CN113809463B (en)

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CN111606033A (en) * 2020-05-19 2020-09-01 芜湖奇达动力电池系统有限公司 New energy automobile power battery module placing equipment and placing method
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014063630A1 (en) * 2012-10-25 2014-05-01 东莞市鸿宝锂电科技有限公司 Backing cooling device and clamp nut locking/unlocking mechanism and clamp fastening mechanism thereof
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