CN113140848A - Battery pack and manufacturing method thereof - Google Patents
Battery pack and manufacturing method thereof Download PDFInfo
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- CN113140848A CN113140848A CN202010048613.8A CN202010048613A CN113140848A CN 113140848 A CN113140848 A CN 113140848A CN 202010048613 A CN202010048613 A CN 202010048613A CN 113140848 A CN113140848 A CN 113140848A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000178 monomer Substances 0.000 claims abstract description 143
- 238000009434 installation Methods 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a battery pack and a manufacturing method of the battery pack. The manufacturing method of the battery pack comprises the steps of installing battery monomers, arranging a plurality of battery monomers into a row to form a battery monomer group, extruding the battery monomer group to enable the larger sides of two adjacent battery monomers in the battery monomer group to be attached, then placing the battery monomer group into a battery installation chamber, removing the extrusion force applied on the battery monomer group, and enabling the larger sides of the battery monomers at the head end and the tail end of the battery monomer group to be tightly extruded with the corresponding side walls of the battery installation chamber by utilizing the self resilience of each battery monomer. The battery pack comprises a battery pack box body and a battery monomer, wherein the battery pack box body is provided with a battery installation chamber for installing the battery monomer, the battery monomer utilizes self resilience to enable the larger side surface of the battery monomer to be tightly extruded with the corresponding side wall of the battery installation chamber, and pre-installation in the battery installation chamber is realized. The battery pack has simple assembly process and higher assembly efficiency.
Description
Technical Field
The invention relates to a battery pack and a manufacturing method of the battery pack.
Background
The battery pack generally includes a battery pack case having a battery installation chamber in which a plurality of battery modules are disposed. Common battery module structure includes a set of battery monomer, two module curb plates, two module end plates and a box, each battery monomer links together through the mode that concatenates or parallelly connected, module end plate and module curb plate form a frame through welding or riveted mode and surround around battery monomer group, the free bulging force of battery is resisted to the module end plate mainly used, the module curb plate is together fixed a position each battery monomer with the module end plate, the battery module passes through corresponding structure and fixes in the battery package box.
When the battery monomer is assembled in the prior art, the battery monomer is usually stacked together to form a battery monomer group, then the module end plate and the module side plate are placed around the battery monomer group to be welded or riveted to form a frame, and finally the battery module is fixed in a battery pack box body through a corresponding structural part, so that the process is complex, and the connecting part has failure hidden trouble.
Disclosure of Invention
The invention aims to provide a battery pack, which aims to solve the technical problem that the process is complex when a battery cell is installed in the battery pack in the prior art; the invention also aims to provide a manufacturing method of the battery pack, which has simple assembly process and higher installation efficiency.
In order to achieve the purpose, the technical scheme of the battery pack is as follows:
the battery pack comprises a battery pack box body and a battery monomer;
the battery pack box body is provided with a battery installation chamber for installing a battery monomer, the battery installation chamber comprises a side wall and a bottom wall, and the side wall of the battery installation chamber corresponding to the larger side face of the battery monomer is an end wall;
the battery monomer utilizes the resilience thereof to enable the larger side surface of the battery monomer to be tightly squeezed with the end wall, so as to realize the pre-installation in the battery installation chamber.
Has the advantages that: the battery single body in the battery pack disclosed by the invention has the advantages that the larger side face of the battery single body is tightly extruded with the end wall of the battery installation chamber by utilizing the self resilience, so that the pre-installation in the battery installation chamber is realized.
Furthermore, an avoiding groove is formed in the end wall and used for avoiding a clamping jaw for clamping the battery monomer to be installed.
Has the advantages that: when the battery monomers are installed, a certain number of battery monomers can be arranged in a row, then the clamping jaw is used for integrally clamping the row of battery monomers and placing the row of battery monomers into the battery installation chamber, and in the process of placing the battery monomers into the battery installation chamber by using the clamping jaw, the clamping jaw cannot collide and interfere with the end wall under the action of the avoiding groove, so that the clamping jaw can enter the battery installation chamber, and the stable placement of the battery monomers can be ensured; a plurality of single batteries can be installed at one time, the installation efficiency of the single batteries is improved, and the assembly efficiency of the battery pack is correspondingly improved.
Further, the length of the end wall meets the installation requirements of at least two battery cells, and the avoidance groove is formed in the end wall at least at the position corresponding to the installation position of the battery cells.
Has the advantages that: the battery pack box body assembling device can be suitable for the assembling requirements of battery pack box bodies arranged with multiple rows or multiple columns of battery monomers, and is wide in application range.
Further, the end wall includes an inner wall and an outer wall with a hollow cavity therebetween, the avoidance groove is formed by a depression in the inner wall.
Has the advantages that: the use material of end wall can be reduced, and manufacturing cost is practiced thrift, lightens the weight of end wall simultaneously, is convenient for realize the lightweight design of battery package.
Further, the groove walls on the two sides of the avoidance groove extend outwards to the outer wall.
Has the advantages that: the parts of the two side groove walls of the avoiding groove, which extend outwards, form reinforcing ribs, and the structural strength of the end wall can be increased.
Further, the distance between the groove walls on the two sides of the avoiding groove gradually increases from the groove bottom of the avoiding groove to the notch of the avoiding groove.
Has the advantages that: the avoiding space can be enlarged, and the assembly of the battery monomers is more convenient.
The technical scheme of the manufacturing method of the battery pack is as follows:
the manufacturing method of the battery pack comprises the steps of installing battery monomers, arranging a plurality of battery monomers into a row to form a battery monomer group, extruding the battery monomer group to enable the larger sides of two adjacent battery monomers in the battery monomer group to be attached, then placing the battery monomer group into a battery installation chamber, removing the extrusion force applied on the battery monomer group, and utilizing the self resilience of each battery monomer to enable the larger sides of the battery monomers at the head end and the tail end of the battery monomer group to be tightly extruded with the corresponding side wall of the battery installation chamber, thereby realizing the pre-installation of the battery monomers.
Has the advantages that: in the manufacturing method of the battery pack, when the battery monomer is installed, the characteristic that the battery monomer deforms under the action of extrusion force and rebounds after the extrusion force disappears is fully utilized, and the battery pack is preinstalled in the battery installation chamber. Whole process need not to set up module end plate and module curb plate, and corresponding also need not to adopt welding or riveted mode, and whole simple process once only can install the more battery monomer of quantity, has improved the free installation effectiveness of battery, and is corresponding also improved the assembly efficiency of battery package.
Further, before the battery cell group is placed in the battery installation chamber, structural adhesive is coated on the bottom wall of the battery installation chamber, and the structural adhesive is used for bonding the bottom surface of each battery cell with the bottom wall of the battery installation chamber.
Has the advantages that: after the battery monomer group is placed into the battery installation chamber, the battery monomer group is bonded with the bottom wall of the battery installation chamber through the structural adhesive, and then the positioning and fixing of the battery monomer are realized.
Further, after each battery monomer is bonded with the bottom wall of the battery installation chamber, structural adhesive is filled in a gap between each battery monomer and the side wall of the battery installation chamber.
Has the advantages that: the battery single bodies can be conveniently bonded with the battery installation chamber in all directions, so that the battery single bodies can be firmly fixed.
Furthermore, the extrusion of the battery monomer group is realized by using a clamp, the clamp comprises a pair of clamping jaws and an adjusting rod connected with the two clamping jaws, the distance between the two clamping jaws is adjustable, a fastening piece corresponding to the clamping jaws is arranged on the adjusting rod, and the clamping jaws are fastened after the distance between the two clamping jaws is adjusted in place, so that the clamping jaws extrude the battery monomer group.
Has the advantages that: through anchor clamps extrusion battery monomer group, it is more convenient to operate, simultaneously through the distance of adjusting two clamping jaws on the anchor clamps, can control the single quantity of battery of once only pressing from both sides and get, and then be convenient for improve the free installation effectiveness of battery.
Drawings
Fig. 1 is an exploded view illustrating the structure of a battery pack according to the present invention;
FIG. 2 is a top view of the side gusset of FIG. 1;
FIG. 3 is a cross-sectional view of the side gusset of FIG. 1;
fig. 4 is a schematic view of the battery pack of the present invention after being loaded with battery cells;
fig. 5 is a schematic structural view of a jig (not shown) used when mounting the battery cells in the battery pack according to the present invention.
Description of reference numerals: 1-bottom plate, 2-side wall, 3-cover plate, 4-battery monomer, 5-transverse connecting plate, 6-longitudinal connecting plate, 7-inner wall, 8-outer wall, 9-buffer area, 10-battery installation chamber, 11-containing cavity, 12-transverse side wall, 13-longitudinal side wall, 14-avoidance groove, 15-extension section, 16-bottom plate connecting hole, 17-connecting lug plate, 18-longitudinal fixing plate, 19-fixing hole, 20-high voltage connector, 21-low voltage connector, 22-clamping jaw, 23-adjusting rod, 24-fastening nut and 25-handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are only a subset of, and not all embodiments of the application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1 of the battery pack of the present invention:
as shown in fig. 1, 2, 3 and 4, the battery pack comprises a battery pack case and a battery cell 4 mounted in the battery pack case, the battery pack case comprises a cover plate 3, side walls 2 and a bottom plate 1, the side walls 2 and the bottom plate 1 form a containing cavity 11, and the containing cavity 11 is used for mounting the battery cell, a battery management system and other components. The bottom plate 1 is formed by welding aluminum profiles by friction stir welding; the side wall 2 is an extrusion molding profile structure, and a specific die is required during molding; the cover plate 3 is formed by stamping or composite material die pressing.
Specifically, as can be seen from fig. 2 and 3, the side panel 2 includes a side frame, the side frame is a rectangular frame, and includes a lateral side wall 12 and a longitudinal side wall 13, and the side frame and the bottom panel 1 enclose the accommodating cavity 11. The side wall 2 further comprises a longitudinal connecting plate 6, two ends of the longitudinal connecting plate 6 are respectively connected with the transverse side walls 12, a set distance is reserved between the top end of the longitudinal connecting plate 6 and the upper end of the side frame, and a set distance is reserved between the lower end of the longitudinal connecting plate and the bottom end of the side frame.
The longitudinal connecting plates 6 are arranged in the accommodating cavity 11 at intervals, so that the accommodating cavity 11 is divided into three parts along the transverse direction, wherein the two longitudinal connecting plates 6, the transverse side walls 12 and the part of the bottom plate 1 between the two longitudinal connecting plates 6 form a battery mounting chamber 10, and the battery mounting chamber 10 is used for mounting the battery unit 4. The longitudinal connecting plates 6 and the portions of the lateral side walls 12 between the two longitudinal connecting plates 6 form the side walls of the battery mounting compartment 10, as shown in fig. 4, the battery cells 4 are arranged in rows in the lateral direction in the battery mounting compartment 10, and the longitudinal connecting plates 6 correspond to the larger faces of the battery cells 4 to be mounted. An avoiding groove 14 is formed in the longitudinal connecting plate 6, and the avoiding groove 14 is used for avoiding a clamping jaw for clamping a battery monomer to be installed. Battery monomer is when the assembly, arrange into one row with battery monomer is whole earlier, form a battery monomer group, utilize clamping jaw extrusion battery monomer group, clamping jaw extruded face is the great side of battery monomer, the extrusion in-process, two free great sides of battery of arbitrary adjacent in the battery monomer group are pasted tightly, wholly put into battery installation room with battery monomer group, after removing the clamping jaw, rely on resilience of each battery monomer self, lie in the great side that head end and terminal battery monomer 4 correspond and laminate and squeeze tightly with longitudinal tie 6, thereby realize the free preinstallation of battery. In the process of placing the single battery by using the clamping jaw, collision interference between the clamping jaw and the longitudinal connecting plate 6 can be avoided under the action of the avoiding groove 14, so that stable placement of the single battery 4 is ensured. The battery pack is in the work engineering, and the longitudinal connecting plate 6 can eliminate the bulging force of the single battery 4 in the charging and discharging process, and the single battery 4 is prevented from arching outwards.
In this embodiment, the longitudinal webs 6 comprise an inner wall 7, an outer wall 8 and an attachment lug 17 connecting the inner wall 7 and the outer wall 8. The hollow cavity is formed between the inner wall 7 and the outer wall 8, so that the number of used materials of the longitudinal connecting plate 6 is reduced, the manufacturing cost is saved, the weight of the longitudinal connecting plate 6 is reduced, and the lightweight design of the battery pack is facilitated. The connecting lug plates 17 are arranged at intervals along the extending direction of the longitudinal connecting plate 6, each connecting lug plate 17 is provided with a bottom plate connecting hole 16, with reference to fig. 1, the bottom plate 1 is provided with a longitudinal fixing plate 18 corresponding to the longitudinal connecting plate 6, and the longitudinal fixing plate 18 is provided with a fixing hole 19 coaxial with the bottom plate connecting hole 16. The thickness of the longitudinal fixing plate 18 is the same as the vertical distance between the lower end of the longitudinal connecting plate 6 and the bottom end of the side frame, so that the longitudinal fixing plate 18 can just support the longitudinal connecting plate 6 when the side frame 2 is assembled with the bottom plate 1.
The inner wall 7 is provided with a recess, and the escape groove 14 is formed by the recess in the inner wall 7. In order to ensure that the avoiding groove 14 has enough avoiding space to avoid the clamping jaw, the distance between the two side groove walls of the avoiding groove 14 is gradually increased from the groove wall of the avoiding groove 14 to the notch of the avoiding groove 14, so that the avoiding groove 14 forms an expanding groove, and the avoiding space is increased.
Considering the problem that the strength of the longitudinal connecting plate 6 is lower due to the adoption of the inner-outer double-layer hollow structure, the groove walls on the two sides of the groove 14 are extended towards the outer wall 8 and are extended to the outer wall to be connected with the outer wall 8. The parts of the groove walls at the two sides of the avoiding groove 14 extending outwards are extension sections 15, and the extension sections 15 are equivalent to reinforcing ribs and used for reinforcing the structural strength of the longitudinal connecting plate 6.
The side wall 2 further comprises two transverse connecting plates 5, the two transverse connecting plates 5 are arranged in the battery installation chamber 10 at intervals along the longitudinal direction, two ends of each transverse connecting plate 5 are correspondingly connected with the two longitudinal connecting plates 6 respectively, so that the battery installation chamber 10 is divided into three installation areas, and the battery monomers 4 are arranged in rows in each installation area. Horizontal connecting plate 7 and longitudinal tie plate 8 can play the free positioning action of battery, and the length of longitudinal tie plate 6 satisfies the installation requirement of three rows of battery monomer 4 to all be equipped with two on the part that corresponds with each row of battery monomer of longitudinal tie plate 6 and dodge groove 14, these two are dodged groove 14 interval and are arranged, guarantee that the battery monomer 4 that is in every installing zone can both pass through the normal assembly of clamping jaw. Have the space between the less side of transverse connection board 5 and battery monomer 4, during the assembly, can fill the structure in this space and glue to it is fixed to make battery monomer 4 and transverse connection board 5 bond, guarantees that battery monomer 4's is fixed reliable. The buffer area 9 is formed between each longitudinal connecting plate 6 and the corresponding longitudinal side wall 13, and the buffer area 9 is used for buffering external extrusion on the side wall 2, so that the extrusion force is prevented from being transmitted to the corresponding battery monomer 4, and a certain protection effect is realized on the battery monomer 4. The lateral width of one of the two buffer areas is larger than that of the other buffer area, the battery management system is installed in the buffer area with the large lateral width, and the buffer area with the small lateral width is a cavity.
In this embodiment, the structure of the clamp for mounting the battery cells is shown in fig. 5, and the clamp includes a pair of clamping jaws 22 and an adjusting rod 23 connected to the two clamping jaws 22, and both the clamping jaws 22 can move along the extending direction of the adjusting rod 23, so that the number of the clamped battery cells can be adjusted. The opposite sides of the two clamping jaws 22 are provided with reinforcing ribs to improve the structural strength of the clamping jaws 22, and the avoiding groove 14 is used for avoiding the reinforcing ribs on the clamping jaws 22. In order to ensure the clamping degree of the clamping jaws 22 to the battery cell, fastening nuts 24 are arranged on the adjusting rod 23 on the sides opposite to the two clamping jaws 22, and the fastening nuts 24 are in threaded fit with the adjusting rod 23. When the two clamping jaws 22 clamp a certain number of battery cells, the clamping jaws 22 can be ensured to clamp the battery cells by simultaneously screwing the fastening nuts 24 on the two sides. In order to facilitate manual operation of the clamp, a handle 25 is provided at the center of the adjusting rod 23.
The assembly process of the battery pack of the invention: the side wall 2 and the bottom plate 1 are firstly pre-fixed together through a fastener, at the moment, the longitudinal fixing plate 18 supports the longitudinal connecting plate 6, the fixing hole 20 and the bottom plate connecting hole 16 are in a coaxial state, and then a battery monomer can be installed. When installing the battery monomer, pile up into one row with battery monomer 4 earlier, later adjust the distance between two clamping jaws 22, make the distance between two clamping jaws 22 be greater than battery monomer 4 when arranging in a row holistic length, then place two clamping jaws 22 in the both sides of battery monomer 4 of head end and terminal, twist soon fastening nut 24, fastening nut 24 pushes away two clamping jaws 22 and is close to each other, until pressing from both sides the tight battery monomer in a row, the clamping jaw extrudes the battery monomer when pressing from both sides tight battery monomer and make it warp. When the weight of the battery monomer 4 is lighter, the battery monomer in the row can be placed into the battery installation chamber 10 directly through the manual handle 25, after the battery monomer is placed into the battery installation chamber, the clamping jaws are removed, and the larger surfaces corresponding to the battery monomers 4 at the head end and the tail end are attached to the longitudinal connecting plate 6 and are tightly squeezed by utilizing the self resilience of each battery monomer. The structure that paints in advance on bottom plate 1 is used to glue, and after battery monomer is put into battery installation room 10, battery monomer 4 is pushed down to the thick position of required glue and is dried, makes battery monomer 4 and bottom plate 1 bond firmly. After the structural adhesive is cured, the structural adhesive is filled in gaps between the head and tail battery monomers 4 and the longitudinal connecting plates 6 and gaps between the side faces of the battery monomers 4 and the transverse side walls 12, so that the battery monomers 4 are bonded with the side walls 2 in all directions, and the installation of the battery monomers is further realized. After the battery monomer 4 is fixedly installed, the screw rod correspondingly penetrates into the bottom plate connecting hole 16 and is in threaded fit with the fixing hole 19, the longitudinal fixing plate 18 is fixedly connected with the longitudinal connecting plate 6, at the moment, the position of the side frame 22 is relatively determined, correspondingly, the high-voltage connector 20 and the low-voltage connector 21 can be installed on the side wall 2, and high-voltage and low-voltage wiring harnesses, aluminum bars and copper-aluminum bars can be installed. After installation, the cover plate 3, the side walls 2 and the bottom plate 1 are integrally assembled together, so that the whole battery pack is assembled.
The battery pack disclosed by the invention makes full use of the characteristics that the battery monomer is extruded and deformed and rebounds when the extrusion force disappears, so that the battery monomer is stably arranged in the battery installation chamber; and accessible clamping jaw once only gets a row of battery monomer that is a lot of, the free in-process of installation battery, the clamping jaw can not collide with vertical connecting plate and interfere, guarantees that the free stability of battery is placed. Compared with the prior art, the installation process is simple, the installation efficiency of the battery monomer is improved, and the installation efficiency of the battery pack is indirectly improved.
Example 2 of the battery pack of the present invention:
this embodiment is different from embodiment 1 described above in that the length of the longitudinal connecting plate in this embodiment only satisfies the installation requirement of a row of battery cells, and this case is applicable to the case where the size of the battery pack is small or the size of the battery cells is large.
Example 3 of the battery pack of the present invention:
this embodiment differs from embodiment 1 described above in that the longitudinal connecting plates in this embodiment are solid and the avoidance grooves are formed by open grooves machined in the longitudinal connecting plates. At this time, although the weight of the longitudinal connecting plates is increased, the strength of the longitudinal connecting plates is correspondingly increased.
Example 4 of the battery pack of the present invention:
this embodiment is different from embodiment 1 described above in that, in this embodiment, the groove walls on both sides of the avoiding groove do not extend outward, and at this time, no extension section is formed, but the structure of the longitudinal connecting plate is simpler.
Example 5 of the battery pack of the present invention:
the difference between this embodiment and embodiment 1 is that, in this embodiment, the distance between the groove walls on both sides of the avoiding groove is equal, and thus the embodiment can be applied to a fixture with a more regular structure, and can also play a certain role in guiding the fixture.
The embodiment of the manufacturing method of the battery pack of the invention comprises the following steps:
the manufacturing method of the battery pack comprises the step of installing the battery monomers, when the battery monomers are installed, the battery monomers are firstly arranged into a row to form a battery monomer group, the battery monomer group is extruded to enable the larger sides of two adjacent battery monomers in the battery monomer group to be attached, then the battery monomer group is placed into a battery installation chamber, the extrusion force applied to the battery monomer group is removed, the larger sides of the battery monomers at the head end and the tail end of the battery monomer group are tightly extruded with the corresponding side walls of the battery installation chamber by utilizing the self resilience of each battery monomer, and therefore the battery monomers are installed in advance.
Put into at battery monomer group before in the battery installation room, scribble the structure glue on the diapire of battery installation room in advance, when putting into battery monomer group, push down battery monomer group to required thick position of gluing and carry out drying process, and then make battery monomer and battery installation room's diapire bond together fixedly, realize the free pre-fixing of battery.
After each battery monomer is firmly bonded with the bottom wall of the battery installation chamber, structural adhesive is filled in gaps between each battery monomer and the side wall of the battery installation chamber, so that the battery monomers are bonded with the battery installation chamber in an all-around manner, and the battery monomers are firmly fixed.
In order to facilitate the installation of the battery cells, in actual operation, the battery cell set is extruded by using the clamp, and the structure of the clamp is the same as that of the clamp used in the embodiment of the battery pack, and is not described herein again.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. The battery pack comprises a battery pack box body and a battery monomer;
the battery pack box body is provided with a battery installation chamber for installing a battery monomer, the battery installation chamber comprises a side wall and a bottom wall, and the side wall of the battery installation chamber corresponding to the larger side face of the battery monomer is an end wall;
it is characterized in that the preparation method is characterized in that,
the battery monomer utilizes the resilience thereof to enable the larger side surface of the battery monomer to be tightly squeezed with the end wall, so as to realize the pre-installation in the battery installation chamber.
2. The battery pack according to claim 1, wherein the end wall is provided with an avoiding groove for avoiding a jaw for clamping a battery cell to be mounted.
3. The battery pack of claim 2, wherein the end wall has a length that meets the mounting requirements of at least two battery cells, and the end wall is provided with the avoiding groove at least at a position corresponding to the mounting of the battery cells.
4. The battery pack of claim 2, wherein the end wall includes an inner wall and an outer wall with a hollow cavity therebetween, and the relief groove is formed by a depression in the inner wall.
5. The battery pack of claim 4, wherein the groove walls on both sides of the escape groove extend outward to the outer wall.
6. The battery pack according to any one of claims 2 to 5, wherein the distance between the groove walls on both sides of the avoidance groove gradually increases from the groove bottom of the avoidance groove to the notch of the avoidance groove.
7. The manufacturing method of the battery pack comprises the step of installing the battery monomers, and is characterized in that the battery monomers are arranged in a row to form a battery monomer group, the battery monomer group is extruded to enable the larger sides of two adjacent battery monomers in the battery monomer group to be attached, then the battery monomer group is placed into a battery installation chamber, the extrusion force applied to the battery monomer group is removed, the larger sides of the battery monomers at the head end and the tail end of the battery monomer group are tightly extruded with the corresponding side walls of the battery installation chamber by utilizing the self resilience of each battery monomer, and the pre-installation of the battery monomers is realized.
8. The method of claim 7, wherein a structural adhesive is applied to the bottom wall of the battery installation chamber before the battery cell pack is placed in the battery installation chamber, and the structural adhesive is used to bond the bottom surface of each battery cell to the bottom wall of the battery installation chamber.
9. The method of claim 8, wherein after the battery cells are bonded to the bottom wall of the battery compartment, structural adhesive is filled into the gaps between the battery cells and the sidewalls of the battery compartment.
10. The method for manufacturing the battery pack according to any one of claims 7 to 9, wherein the pressing of the battery cell set is achieved by using a clamp, the clamp comprises a pair of clamping jaws and an adjusting rod for connecting the two clamping jaws, the distance between the two clamping jaws is adjustable, the adjusting rod is provided with a fastening piece corresponding to the clamping jaws, and the fastening piece fastens the clamping jaws after the distance between the two clamping jaws is adjusted to a position, so that the clamping jaws press the battery cell set.
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| CN202010048613.8A CN113140848A (en) | 2020-01-16 | 2020-01-16 | Battery pack and manufacturing method thereof |
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| CN202010048613.8A CN113140848A (en) | 2020-01-16 | 2020-01-16 | Battery pack and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611906A (en) * | 2021-08-02 | 2021-11-05 | 中航锂电科技有限公司 | Battery assembling method and battery pack |
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| CN209357864U (en) * | 2019-02-28 | 2019-09-06 | 常州攸米新能源科技有限公司 | A kind of laser welding battery modules dismantling clamping position tooling |
| CN110323376A (en) * | 2018-03-30 | 2019-10-11 | 宁德时代新能源科技股份有限公司 | End plate for battery module and battery module |
| CN209912937U (en) * | 2019-06-27 | 2020-01-07 | 蜂巢能源科技有限公司 | Lower casing and vehicle of battery package |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323376A (en) * | 2018-03-30 | 2019-10-11 | 宁德时代新能源科技股份有限公司 | End plate for battery module and battery module |
| CN209357864U (en) * | 2019-02-28 | 2019-09-06 | 常州攸米新能源科技有限公司 | A kind of laser welding battery modules dismantling clamping position tooling |
| CN209912937U (en) * | 2019-06-27 | 2020-01-07 | 蜂巢能源科技有限公司 | Lower casing and vehicle of battery package |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113611906A (en) * | 2021-08-02 | 2021-11-05 | 中航锂电科技有限公司 | Battery assembling method and battery pack |
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Application publication date: 20210720 |