CN107768566B - Battery module convenient to dismouting - Google Patents
Battery module convenient to dismouting Download PDFInfo
- Publication number
- CN107768566B CN107768566B CN201710914859.7A CN201710914859A CN107768566B CN 107768566 B CN107768566 B CN 107768566B CN 201710914859 A CN201710914859 A CN 201710914859A CN 107768566 B CN107768566 B CN 107768566B
- Authority
- CN
- China
- Prior art keywords
- plate
- end plate
- battery module
- rear end
- turning plate
- Prior art date
- 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.)
- Active
Links
- 239000003292 glue Substances 0.000 claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000007689 inspection Methods 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 description 28
- 239000000853 adhesive Substances 0.000 description 27
- 238000003466 welding Methods 0.000 description 25
- 239000012790 adhesive layer Substances 0.000 description 23
- 239000010410 layer Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
Landscapes
- 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 module convenient to disassemble and assemble, which comprises a battery core, wherein a front end plate and a rear end plate are respectively arranged at the front end and the rear end of the battery core, a left side plate and a right side plate are respectively arranged at the left side and the right side of the battery core, the front end plate, the left side plate, the rear end plate and the right side plate are sequentially connected, mounting glue grooves are correspondingly arranged at the left side and the right side of the front part of the front end plate, mounting glue grooves are correspondingly arranged at the left side and the right side of the rear part of the rear end plate, a left turning plate is respectively arranged at the front end and the rear end of the left side plate, and a right turning plate is respectively arranged at the front end and the rear end of the right side plate; the thickness of the left turning plate and the right turning plate is smaller than the width of the mounting glue groove; the left turning plate of the left side plate and the right turning plate of the right side plate are coated with glue layers, and the left turning plate of the left side plate and the right turning plate of the right side plate are respectively attached to the corresponding mounting glue grooves through the glue layers. The invention has low requirement on the dimensional accuracy of parts, low requirement on materials, wide adaptability, no need of production tools, convenient inspection, high connection strength, absorbability of deformation, no safety problem in the production process, good maintainability, no need of additional equipment and low investment.
Description
Technical Field
The invention belongs to the technical field of methods or devices for directly converting chemical energy into electric energy, such as a battery pack, and particularly relates to a battery module convenient to assemble and disassemble.
Background
At present, under the support of the country and the advantage of the market, the power lithium battery industry is developed very rapidly, and the application of the power lithium battery industry is expanded to the fields of electric buses, electric cars, micro buses, energy storage and the like.
The core part in the power lithium battery is the battery core, in the prior art, the grouping mode of square battery core is relatively similar, and most adopts frame structure, namely uses end plate and curb plate to make an outer frame, uses through sticky tape or glue that has the adhesive property between the battery core to become an entity, simultaneously, because connect through the mode of bonding between the battery core, in order to bond firmly, generally all need exert certain power on two end plates for bonding material plays a role.
In this structural form, the end plate and the side plate are generally connected and fixed by welding, riveting, screwing, etc., however, the conventional connection and fixation have disadvantages including:
1) The dimensional accuracy requirement on the parts is high; when laser welding is used, the size of a welding position needs to be controlled to be +/-0.5 mm, and a module generally has more than 5 electric cores, even in an electric core enterprise with better size control, the thickness of each electric core needs to keep an error of +/-0.2 mm, the tolerance of a side plate and an end plate and the tolerance of a positioning tool, the final accumulated tolerance is far more than +/-0.5 mm, the practical application effect of laser welding is poor, and when the laser welding is used, the requirements on the dimensional accuracy of each material such as the electric core size, the end plate size, the side plate size and the like are very high, and the material cost is very high;
2) The requirements on materials are high, and the adaptability is low; the principle of laser welding is that two welding parts are melted by high temperature and solidified together after cooling, so that the melting points of two materials are required to be relatively close, even the same material is required, and the selection of the materials is limited, for example, metal and plastic cannot be welded by laser, and some lightweight materials cannot be used;
3) The requirement on the production tooling is high; the laser welding requires that the gap between two parts is smaller than a certain value, so that a clamping tool is required in the machining process, and the clamping tool is required to be high in precision, and the high-precision tool is high in price;
4) Weld inspection is difficult; in the laser welding process, once impurities exist in the material, dirt exists on the surface of the material and the like, welding abnormality occurs, and the conditions of cold welding, welding penetration and the like are caused, so that the welding abnormality is difficult to detect;
5) The connection strength is insufficient; because the battery cells can expand in the circulation process, the accumulated expansion of the battery cells is converted into the force expression; the expansion force of the battery core is generally more than 10000N, the fixing bolts or riveting positions are limited, the requirement of the expansion force is difficult to meet by screwing or riveting, and once the expansion force of the battery core is larger than the connection strength, an outer frame formed by the end plate and the side plate can fail, and the whole module can also fail;
6) Poor ability to absorb deformation; no matter welding or screwing or riveting, displacement is not allowed, and when the expansion force of the battery cell appears to increase the size, the current connection mode has poor deformation absorption capacity;
7) The safety is poor in the production process; the metal particles are easy to splash in the high-temperature fusion welding process, and once the metal particles splash between the battery cores, poor insulation and voltage resistance can be caused, so that the whole module has the hidden trouble of scrapping;
8) Poor maintainability; the welding is carried out by melting two materials, if the welding needs to be repaired, the welding can only be destructive, and the maintainability is poor;
9) The requirements on equipment are high, and the investment is large; the existing welding mode needs special welding equipment whether laser welding or CMT welding, and the welding equipment has high value, needs great investment and has high cost.
Disclosure of Invention
The invention solves the technical problems that in the prior art, an end plate and a side plate of a battery module are generally connected and fixed in a welding, riveting, screwing and other modes, so that the battery module with an optimized structure is convenient to assemble and disassemble, and has the advantages of higher dimensional accuracy requirements on parts, higher material requirements, lower adaptability, higher requirements on production tools, difficult weld joint inspection, insufficient connection strength, poor deformation absorbing capacity, poor safety in the production process, poor maintainability, higher equipment requirements and large capital investment.
The battery module comprises a battery core, wherein a front end plate and a rear end plate are respectively arranged at the front end and the rear end of the battery core, a left side plate and a right side plate are respectively arranged at the left side and the right side of the battery core, the front end plate, the left side plate, the rear end plate and the right side plate are sequentially connected, mounting glue grooves are correspondingly arranged at the left side and the right side of the front part of the front end plate, mounting glue grooves are correspondingly arranged at the left side and the right side of the rear part of the rear end plate, a left turning plate is respectively arranged at the front end and the rear end of the left side plate, and a right turning plate is respectively arranged at the front end and the rear end of the right side plate; the thickness of the left turning plate and the right turning plate is smaller than the width of the mounting glue groove; the left turning plate of the left side plate and the right turning plate of the right side plate are coated with glue layers, the left turning plate of the left side plate is respectively attached to the corresponding front left side of the front end plate and the corresponding rear left side of the rear end plate through the glue layers, and the right turning plate of the right side plate is respectively attached to the corresponding front right side of the front end plate and the corresponding rear right side of the rear end plate through the glue layers.
Preferably, the mounting adhesive groove is a dovetail groove, the groove bottom of the dovetail groove is perpendicular to the front end plate or the rear end plate, and the included angle between the groove wall and the groove bottom of the dovetail groove is alpha, and the included angle is 45 degrees and less than or equal to 90 degrees.
Preferably, the included angle between the left turning plate and the left side plate is beta, and 45 degrees is less than beta and less than 135 degrees.
Preferably, the included angle between the right turning plate and the right side plate is gamma, and the gamma is less than 135 degrees in 45 degrees.
Preferably, the width of the notch of the dovetail groove is larger than the thickness of the left turning plate and the right turning plate.
Preferably, the length of the front surface of the front end plate is greater than the length between the forward left side and the forward right side of the front end plate and the top of the aft slot wall of the dovetail slot.
Preferably, the length of the rear surface of the rear end plate is greater than the length between the forward slot wall tips of the dovetail slots on the rear left and rear right sides of the rear end plate.
Preferably, the bottoms of the left side plate and the right side plate are respectively provided with a bottom turning plate, and the bottom turning plates of the left side plate and the right side plate are sequentially attached to the bottoms of the front end plate, the bottom of the battery cell and the bottom of the rear end plate.
Preferably, the middle parts of the front end plate and the rear end plate comprise a plurality of reinforcing ribs.
The invention provides a battery module with an optimized structure and convenient disassembly and assembly, which is characterized in that mounting glue grooves are correspondingly formed on the left side and the right side of the front part of a front end plate and the left side and the right side of the rear part of a rear end plate, a left turning plate is respectively arranged at the front end and the rear end of a left side plate, a right turning plate is respectively arranged at the front end and the rear end of a right side plate, the thicknesses of the left turning plate and the right turning plate are smaller than the width of the mounting glue grooves, the left turning plate and the right turning plate can be conveniently adjusted in the mounting glue grooves, after the positions of the left turning plate and the right turning plate are finished, glue layers are coated outside the left turning plate and the right turning plate, and the sequential connection of the front end plate, the left side plate, the rear end plate and the right side plate can be completed through the mutual matching between the glue layers and the mounting glue grooves.
The beneficial effects of the invention at least comprise:
1) The dimensional accuracy requirement on the parts is low: because the width of the mounting adhesive groove is larger than the thickness of the left turning plate and the right turning plate, enough size space is provided to compensate the problem of part tolerance;
2) The requirements on materials are low, the adaptability is wide, and the lightweight design of the module can be realized; the adhesive layer and the corresponding mounting adhesive groove are adopted, the two parts can be repeatedly reproduced to be connected together, the molecular force on the surface of the material is only required to be large, the melting point is not required too much, and the connection of metal, plastic and other materials can be realized;
3) Production tooling is not needed; the parts can be positioned by themselves, and fixture clamps such as positioning, mounting and the like are not needed;
4) The inspection is convenient; the bonding condition can be judged through the drying time of the adhesive layer and whether the adhesive mounting groove is filled, so that the efficiency is high, and the labor consumption is low;
5) The connection strength is high; the adhesive layer has high adhesive strength and is coated outside the left turning plate and the right turning plate, namely 3 corresponding surfaces with adhesive relation are provided, the adhesive area is large, and the connection strength is high;
6) Can absorb deformation; because the width of the notch of the mounting adhesive groove is larger than the thickness of the left turning plate and the right turning plate, the gap between the mounting adhesive groove and the left turning plate and the right turning plate is filled with an adhesive layer, and in general, the adhesive layer has extensibility and compressibility, and when the expansion force of the battery cell reaches a certain value, the battery cell can be deformed and absorbed to expand through the adhesive layer;
7) The production process does not generate safety problems; because the adhesive layer is paste, splash particles cannot be generated in the production and processing process, and the adhesive layer is an insulating material, so that safety problems cannot be caused even if the adhesive overflows;
8) The maintainability is good; in practical application, the adhesive layer can be softened at a certain temperature, so that technicians can realize zero-destructive disassembly and maintenance by heating the adhesive layer;
9) No extra equipment is needed, and the investment is small; the glue layer can realize natural solidification without adding special equipment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1A in a partially enlarged manner;
FIG. 3 is a schematic diagram of the cooperation structure of the middle sole turning plate and the battery cell;
FIG. 4 is a schematic view of the right side plate of the present invention;
FIG. 5 is a schematic top view of the front end plate of the present invention, wherein α is the angle between the groove wall and the groove bottom of the dovetail groove;
FIG. 6 is a schematic view of a dovetail groove with a groove wall facing one side of the end plate at 90 and a groove bottom and another side less than 90;
FIG. 7 is a schematic view of a dovetail groove with a groove wall and a groove bottom of 90 degrees and another side smaller than 90 degrees on one side facing away from an end plate;
FIG. 8 is a schematic view of a dovetail groove with angles between the groove walls and the groove bottoms of both sides of less than 90 degrees;
FIG. 9 is a schematic top view of the present invention;
FIG. 10 is a schematic view of the enlarged partial structure of FIG. 9B, wherein the angle between the left flap and the left side plate is equal to 90 DEG, and β is the angle between the left flap and the left side plate;
FIG. 11 is a schematic view of a partial structure of the left flap and the left side plate with an angle smaller than 90 degrees;
fig. 12 is a schematic view of a partial structure of the left flap and the left side plate with an angle greater than 90 °.
Detailed Description
The present invention will be described in further detail with reference to examples, but the scope of the present invention is not limited thereto.
As shown in the figure, the invention relates to a battery module convenient to disassemble and assemble, which comprises a battery cell 1, wherein the front end and the rear end of the battery cell 1 are respectively provided with a front end plate 2 and a rear end plate 3, the left side and the right side of the battery cell 1 are respectively provided with a left side plate 4 and a right side plate 5, the front end plate 2, the left side plate 4, the rear end plate 3 and the right side plate 5 are sequentially connected, the front left side and the front right side of the front end plate 2 are correspondingly provided with mounting adhesive grooves 6, the rear left side and the rear right side of the rear end plate 3 are correspondingly provided with mounting adhesive grooves 6, the front end and the rear end of the left side plate 4 are respectively provided with a left turning plate 7, and the front end and the rear end of the right side plate 5 are respectively provided with a right turning plate 8; the thickness of the left turning plate 7 and the right turning plate 8 is smaller than the width of the mounting adhesive groove 6; the outer cladding of the left turning plate 7 of the left side plate 4 and the right turning plate 8 of the right side plate 5 is provided with a glue layer 9, the left turning plate 7 of the left side plate 4 is respectively attached to the corresponding front left side of the front end plate 2 and the corresponding rear left side of the rear end plate 3 through the glue layer 9, and the right turning plate 8 of the right side plate 5 is respectively attached to the corresponding front right side of the front end plate 2 and the corresponding rear right side of the rear end plate 3 through the glue layer 9.
In the invention, the battery module mainly comprises a battery cell 1 and a mounting piece arranged outside the battery cell 1, wherein the mounting piece comprises a front end plate 2 and a rear end plate 3 which are respectively arranged at the front end and the rear end of the battery cell 1, and a left side plate 4 and a right side plate 5 which are respectively arranged at the left side and the right side, and the front end plate 2, the left side plate 4, the rear end plate 4 and the right side plate 5 are sequentially connected and are enclosed outside the battery cell 1.
According to the invention, the front left side and the front right side of the front end plate 2 and the rear left side and the rear right side of the rear end plate 3 are correspondingly provided with the mounting adhesive grooves 6, the front end and the rear end of the left side plate 4 are respectively provided with the left turning plate 7, the front end and the rear end of the right side plate 5 are respectively provided with the right turning plate 8, and the thicknesses of the left turning plate 7 and the right turning plate 8 are smaller than the width of the mounting adhesive grooves 6, so that the positions of the left turning plate 7 and the right turning plate 8 can be conveniently adjusted in the mounting adhesive grooves 6, after the positions of the left turning plate 7 and the right turning plate 8 are finished, the adhesive layers 9 are coated outside the left turning plate 7 and the right turning plate 8, and the front end plate 2, the left side plate 4, the rear end plate 3 and the right side plate 5 can be sequentially connected through the mutual matching between the adhesive layers 9 and the mounting adhesive grooves 6.
In the invention, the thickness of the left turning plate 7 and the right turning plate 8 is smaller than the width of the mounting glue groove 6 by 1mm or more. Typically 1mm to 1.5mm.
The invention comprises a front end plate 2 and a rear end plate 3 with improved structures, a left side plate 4 and a right side plate 5 with improved structures and a high-strength adhesive layer 9, wherein the front end plate 2, the left side plate 4, the rear end plate 3 and the right side plate 5 are sequentially connected through a traditional mortise-tenon joint structure and modern high-strength structural adhesive.
The mounting adhesive groove 6 is a dovetail groove, the groove bottom 10 of the dovetail groove is perpendicular to the front end plate 2 or the rear end plate 3, and the included angle between the groove wall 11 of the dovetail groove and the groove bottom 10 is alpha, and the angle between the groove wall 11 and the groove bottom 10 is 45 degrees and less than or equal to 90 degrees.
The included angle between the left turning plate 7 and the left side plate 4 is beta, and the beta is more than 45 degrees and less than 135 degrees.
The included angle between the right turning plate 8 and the right side plate 5 is gamma, and the gamma is less than 135 degrees and is 45 degrees.
The width of the notch 12 of the dovetail groove is larger than the thickness of the left turning plate 7 and the right turning plate 8.
The length of the front surface of the front end plate 2 is longer than the length between the tips of the rear groove walls 11 of the dovetail grooves on the front left side and the front right side of the front end plate 2.
The length of the rear surface of the rear end plate 3 is longer than the length between the tips of the front groove walls 11 of the dovetail grooves on the rear left side and the rear right side of the rear end plate 3.
In the invention, in order to further ensure the stability and the detachability of the connection between the end plate and the side plate, the mounting adhesive groove 6 is arranged as a dovetail groove, and the groove bottom 10 of the dovetail groove is vertical to the front end plate 2 or the rear end plate 3, namely, the groove bottom 10 of the dovetail groove is parallel relative to the side plate, thereby ensuring the smoothness of the adhesive layer 9 in the injection process and ensuring the sufficient strength of the adhesive layer 9.
In the invention, the included angle between the groove wall 11 and the groove bottom 10 of the dovetail groove is alpha, the angle is less than or equal to 45 degrees, alpha is less than or equal to 90 degrees, the whole dovetail groove is of a structure with small opening and large inner surface, and in actual operation, the width of the notch 12 of the dovetail groove is larger than the thickness of the left turning plate 7 and the right turning plate 8.
In the present invention, α may be set to 85 ° in general.
In the invention, the angles between the groove walls 11 and the groove bottom 10 at the two sides of the dovetail groove are different, so that the deformation absorbing capacity and the connection strength of the battery module can be influenced.
In the present invention, in actual operation, the angle between the two side groove walls 11 and the groove bottom 10 of the dovetail groove may include: (1) The groove wall 11 of one side of the dovetail groove facing the end plate forms 90 degrees with the groove bottom 10, and the other side is smaller than 90 degrees, so that the dovetail groove with the structure can limit the deformation dimension of the appearance of the battery module; (2) The groove wall 11 of one side of the dovetail groove, which is away from the end plate, forms 90 degrees with the groove bottom 10, and the other side is smaller than 90 degrees, so that the dovetail groove with the structure has relatively weak connection strength and is convenient to damage; (3) The angles between the groove walls 11 and the groove bottoms 10 at the two sides of the dovetail groove are smaller than 90 degrees, and the deformation capacity and the connection strength of the dovetail groove with the structure are stronger than those of the first two types.
In the present invention, the angles of the left and right flaps 7 and 8 with the left and right side plates 4 and 5 also include less than 90 °, equal to 90 °, and greater than 90 °, and in general, an angle setting of less than 135 ° and greater than 45 ° is adopted.
In the present invention, the angles β and γ are generally equal.
In practical application, according to the type and the performance of the battery cell 1, different dovetail groove structures are selected to be matched with the combination of the side plates and the turning plates at different angles. For example, the ternary energy battery cell 1 needs greater deformation absorbing capacity and greater connection strength due to larger expansion force and expansion size, and the angle between the two side groove walls 11 and the groove bottom 10 of the dovetail groove is generally selected to be smaller than 90 ° when selected, and the angle between the left turning plate 7 and the right turning plate 8 and the left side plate 4 and the right side plate 5 is smaller than or equal to 90 °; in other cases, it is desirable that the battery cell 1 cannot be damaged after the battery cell 1 is expanded, that is, the battery cell 1 needs to be easily detached in the case of having connection strength, and the structure of the (2) th dovetail groove is more appropriate.
According to the invention, the dovetail groove is filled with the adhesive layer 9 which is coated with the left turning plate 7 and the right turning plate 8, the adhesive force is more than 10MPa, and after the adhesive layer 9 is molded, the open exposed falcon structure is formed. For example, since the adhesive strength of the adhesive layer 9 is greater than 10MPa, and the adhesive area is three faces, the adhesive area is large, and the adhesive strength is high, and assuming that the depth of the dovetail groove is 5mm, the height of the side plate is 190mm, and the thickness is 1mm, the adhesive force f= (5×190×2+190×1) ×10=20900N.
In the invention, if the dovetail groove of the buckling connection of the side plate and the end plate needs to be damaged, the tensile strength of the material is required to be larger than that of the material, and the bonding strength of the adhesive layer 9 is required to be larger than 10MPa, so that when the materials of the end plate and the side plate are selected, the tensile strength of the material is required to be larger than that of the adhesive layer 9 (the adhesive layer 9 fails first), and from the point of view, the conventional metal materials, engineering plastics and the like can meet the requirements.
In the invention, the adhesive layer 9 can be made of acrylic materials or epoxy materials, the adhesive strength is required to be more than 10MPa, and the adhesive layer has certain softness and compressibility.
In the invention, the length of the front surface of the front end plate 2 is larger than the length between the tops of the rear groove walls 11 of the dovetail grooves on the left side and the right side of the front part of the front end plate 2, the length of the rear surface of the rear end plate 3 is larger than the length between the tops of the front groove walls 11 of the dovetail grooves on the left side and the right side of the rear end plate 3, which means that the heights of the tops of the dovetail grooves are inconsistent, the groove walls 11 on the outer side are longer than the groove walls 11 on the inner side, which calculates the thickness of the left side plate 4 and the right side plate 5, and the installation and the fixation of the left side plate 4 and the right side plate 5 are more convenient. In general, the groove wall 11 at the outer end of the dovetail groove is 1.2mm longer than the groove wall 11 at the inner end, and the actual size of the battery module is determined.
The bottoms of the left side plate 4 and the right side plate 5 are respectively provided with a bottom turning plate 13, and the bottom turning plates 13 of the left side plate 4 and the right side plate 5 are sequentially attached to the bottoms of the front end plate 2, the bottom of the battery cell 1 and the bottom of the rear end plate 3.
According to the invention, the bottoms of the left side plate 4 and the right side plate 5 are respectively provided with the bottom turning plate 13, and when the module is locked, the bottom turning plate 13 is sequentially attached to the bottom of the front end plate 2, the bottom of the battery cell 1 and the bottom of the rear end plate 3, and the side plates are pressed through the front end plate 2 and the rear end plate 3, so that equipotential connection is realized, the installation is convenient, and the precision is higher.
The middle parts of the front end plate 2 and the rear end plate 3 comprise a plurality of reinforcing ribs 14.
In the invention, in order to ensure the bearing effect of the front end plate 2 and the rear end plate 3, the middle parts of the front end plate 2 and the rear end plate 3 are provided with the reinforcing ribs 14, so that the strength of the front end plate 2 and the rear end plate 3 when the battery cell 1 expands is ensured.
The invention solves the problems of high dimensional accuracy requirement on parts, high material requirement, low adaptability, high requirement on production tools, difficult weld joint inspection, insufficient connection strength, poor deformation absorbing capacity, poor safety in the production process, poor maintainability, high equipment requirement and large fund investment caused by the fact that the end plates and the side plates of the battery module are generally connected and fixed in a welding mode, a riveting mode, a screwing mode and the like, the mounting glue grooves 6 are correspondingly formed on the left side and the right side of the front end plate 2 and the left side and the right side of the rear end plate 3, the left flap 7 and the right flap 8 are respectively arranged on the front end and the rear end of the left side plate 4, the right flap 8 is respectively arranged on the front end and the rear end of the right side plate 5, the thickness of the left flap 7 and the right flap 8 is smaller than the width of the mounting glue grooves 6, the left flap 7 and the right flap 8 can be conveniently adjusted in the mounting glue grooves 6, and after the positions of the left flap 7 and the right flap 8 are covered with glue layers 9, and the left flap 8 are sequentially connected with the front end plate 2 and the right side plate 4 through the glue grooves 6.
The invention has low requirement on the dimensional accuracy of parts, low requirement on materials, wide adaptability, capability of realizing the lightweight design of the module, no need of production tools, convenient inspection, high connection strength, capability of absorbing deformation, no safety problem in the production process, good maintainability, no need of additional equipment and low investment.
Claims (9)
1. The utility model provides a battery module convenient to dismouting, includes the electric core, electric core front end and rear end are equipped with front end plate and rear end plate respectively, the left side and the right side of electric core are equipped with left side board and right side board respectively, front end plate, left side board, rear end plate, right side board connect in order, its characterized in that: the left side and the right side of the front part of the front end plate are correspondingly provided with mounting glue grooves, the left side and the right side of the rear part of the rear end plate are correspondingly provided with mounting glue grooves, the front end and the rear end of the left side plate are respectively provided with a left turning plate, and the front end and the rear end of the right side plate are respectively provided with a right turning plate; the thickness of the left turning plate and the right turning plate is smaller than the width of the mounting glue groove; the left turning plate of the left side plate and the right turning plate of the right side plate are coated with glue layers, the left turning plate of the left side plate is respectively attached to the corresponding front left side of the front end plate and the corresponding rear left side of the rear end plate through the glue layers, and the right turning plate of the right side plate is respectively attached to the corresponding front right side of the front end plate and the corresponding rear right side of the rear end plate through the glue layers.
2. The battery module of claim 1, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the mounting glue groove is a dovetail groove, the groove bottom of the dovetail groove is perpendicular to the front end plate or the rear end plate, and the included angle between the groove wall and the groove bottom of the dovetail groove is alpha, wherein alpha is more than 45 degrees and less than or equal to 90 degrees.
3. The battery module of claim 1, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the included angle between the left turning plate and the left side plate is beta, and the beta is more than 45 degrees and less than 135 degrees.
4. The battery module of claim 1, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the included angle between the right turning plate and the right side plate is gamma, and the gamma is more than 45 degrees and less than 135 degrees.
5. The battery module of claim 2, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the width of the notch of the dovetail groove is larger than the thickness of the left turning plate and the right turning plate.
6. The battery module of claim 2, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the length of the front surface of the front end plate is greater than the length between the front left side and the front right side of the front end plate and the top end of the rear groove wall of the dovetail groove.
7. The battery module of claim 2, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the length of the rear surface of the rear end plate is greater than the length between the front groove wall tops of the dovetail grooves on the left side of the rear portion and the right side of the rear portion of the rear end plate.
8. The battery module of claim 1, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the bottom of left side board and right side board is equipped with the end respectively turns over the board, the bottom of left side board and right side board turns over the board and laminates with the bottom of front end plate, electric core bottom and the bottom of back end plate in order.
9. The battery module of claim 1, wherein the battery module is easy to disassemble and assemble, and is characterized in that: the middle parts of the front end plate and the rear end plate comprise a plurality of reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710914859.7A CN107768566B (en) | 2017-09-30 | 2017-09-30 | Battery module convenient to dismouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710914859.7A CN107768566B (en) | 2017-09-30 | 2017-09-30 | Battery module convenient to dismouting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107768566A CN107768566A (en) | 2018-03-06 |
| CN107768566B true CN107768566B (en) | 2024-02-13 |
Family
ID=61266897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710914859.7A Active CN107768566B (en) | 2017-09-30 | 2017-09-30 | Battery module convenient to dismouting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107768566B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209496929U (en) | 2019-04-16 | 2019-10-15 | 宁德时代新能源科技股份有限公司 | Battery modules end plate and battery modules |
| CN112331989B (en) * | 2019-09-19 | 2021-12-21 | 宁德时代新能源科技股份有限公司 | Battery module, battery pack, vehicle and assembly method of battery module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203659919U (en) * | 2013-12-06 | 2014-06-18 | 英利能源（中国）有限公司 | Solar cell module packaging structure |
| CN105577098A (en) * | 2016-03-01 | 2016-05-11 | 江苏中科国能光伏科技有限公司 | Solar cell assembly cleaning-free plastic aluminum frame packaging structure |
| JP2016151282A (en) * | 2015-02-16 | 2016-08-22 | 日本バルカー工業株式会社 | Seal member |
| CN205828488U (en) * | 2016-07-28 | 2016-12-21 | 宁德时代新能源科技股份有限公司 | Cell end plate and battery modules |
| CN207504038U (en) * | 2017-09-30 | 2018-06-15 | 杭州捷能科技有限公司 | A kind of easy-to-mount battery modules |
| KR20200091999A (en) * | 2019-01-23 | 2020-08-03 | 주식회사 엘지화학 | Battery module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102034208B1 (en) * | 2016-03-03 | 2019-10-18 | 주식회사 엘지화학 | Battery module, battery pack the battery module and vehicle comprising the battery pack |
-
2017
- 2017-09-30 CN CN201710914859.7A patent/CN107768566B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203659919U (en) * | 2013-12-06 | 2014-06-18 | 英利能源（中国）有限公司 | Solar cell module packaging structure |
| JP2016151282A (en) * | 2015-02-16 | 2016-08-22 | 日本バルカー工業株式会社 | Seal member |
| CN105577098A (en) * | 2016-03-01 | 2016-05-11 | 江苏中科国能光伏科技有限公司 | Solar cell assembly cleaning-free plastic aluminum frame packaging structure |
| CN205828488U (en) * | 2016-07-28 | 2016-12-21 | 宁德时代新能源科技股份有限公司 | Cell end plate and battery modules |
| CN207504038U (en) * | 2017-09-30 | 2018-06-15 | 杭州捷能科技有限公司 | A kind of easy-to-mount battery modules |
| KR20200091999A (en) * | 2019-01-23 | 2020-08-03 | 주식회사 엘지화학 | Battery module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107768566A (en) | 2018-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5736221A (en) | Welded plastic panels and method of making same | |
| CN201309054Y (en) | Electric locomotive top cover positive assembling tool | |
| CN107768566B (en) | Battery module convenient to dismouting | |
| NO319176B1 (en) | Structural assembly and method of manufacturing a structural assembly | |
| US20060240220A1 (en) | Composite-to-metal joint | |
| CN110576963B (en) | Solar unmanned aerial vehicle wing structure | |
| US8591693B2 (en) | Method for joining components | |
| CN205211819U (en) | New forms of energy power car battery safety protection shell | |
| CN106784563A (en) | A kind of lithium battery module bus-bar attachment structure | |
| CN110323372A (en) | Composite end plate and battery module | |
| CN211257306U (en) | Wedge-shaped clamping groove connection assembly type steel frame beam column joint | |
| CN220492111U (en) | Battery box and vehicle with same | |
| CN203751615U (en) | Assembly-welding and anti-deforming assembly for top flange of nuclear power station structure module | |
| CN109994696A (en) | Composite end plate and battery module | |
| CN215680865U (en) | Battery package box, battery package and vehicle | |
| CN207504038U (en) | A kind of easy-to-mount battery modules | |
| CN207743309U (en) | Battery modules | |
| CN201744938U (en) | Fixing clamp used for splicing and pre-installation of steel plates of steel structure | |
| CN218731381U (en) | Battery pack | |
| CN115764116B (en) | Production process of full tenon joint new energy automobile battery tray | |
| CN111828445B (en) | Efficient lightweight composite material frame | |
| CN209452993U (en) | A kind of device for CFRTP and the weldering of metal docking laser | |
| US11479015B2 (en) | Custom formed panels for transport structures and methods for assembling same | |
| CN109994671A (en) | Composite end plate and battery module | |
| US20220228552A1 (en) | Wind turbine blade spar structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |