CN109428021B - Frame and battery module - Google Patents
Frame and battery module Download PDFInfo
- Publication number
- CN109428021B CN109428021B CN201710770247.5A CN201710770247A CN109428021B CN 109428021 B CN109428021 B CN 109428021B CN 201710770247 A CN201710770247 A CN 201710770247A CN 109428021 B CN109428021 B CN 109428021B
- Authority
- CN
- China
- Prior art keywords
- battery module
- peripheral wall
- secondary battery
- adhesive
- frame
- 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.)
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Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 72
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 39
- 239000000853 adhesive Substances 0.000 claims description 92
- 230000001070 adhesive effect Effects 0.000 claims description 92
- 239000003292 glue Substances 0.000 claims description 56
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000002955 isolation Methods 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 abstract description 53
- 239000007788 liquid Substances 0.000 description 9
- 230000000149 penetrating effect Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000006850 spacer group Chemical group 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a frame and a battery module. The frame body comprises: a peripheral wall; a containing cavity which is surrounded by the peripheral wall and is opened along the two axial ends of the frame body; at least one reinforcing rib plate is arranged in the accommodating cavity and divides the accommodating cavity into at least two accommodating spaces, and at least one end of each reinforcing rib plate facing the peripheral wall is connected with the peripheral wall. The battery module includes: a plurality of secondary batteries; the housing accommodates at least one secondary battery in each accommodation space. When the frame body is applied to the battery module, the secondary battery can be directly inserted into the preformed frame body, the design of the frame body and the reinforcing rib plate effectively improves the assembly efficiency of the battery module, enhances the overall rigidity of the battery module, improves the resistance capability of the battery module when the battery module is subjected to external impact and/or vibration, enhances the positioning of the secondary battery accommodated in one accommodating space by the reinforcing rib plate in the frame body, and can further restrict the deformation of a plurality of secondary batteries under the action of expansion force in charge and discharge cycles.
Description
Technical Field
The present invention relates to the field of secondary batteries, and more particularly, to a frame and a battery module.
Background
Secondary batteries have various forms. The secondary batteries may be classified into pouch-type secondary batteries and can-type secondary batteries according to the type of case. The case of the pouch-type secondary battery is made of a laminate sheet including a polymer layer and a metal layer. The can type secondary battery case is generally composed of a metal case and a metal top sheet.
The battery module typically arranges and fixes a plurality of secondary batteries through corresponding frames.
The battery module using the can-type secondary battery is generally manufactured by compressing a plurality of arranged can-type secondary batteries and front and rear end plates together, welding and fixing two side plates to the two end plates, and finally externally installing a water cooling system (even a heat-conductive silica gel pad) at the bottom of the plurality of can-type secondary batteries.
The battery module using the pouch type secondary battery generally comprises a pouch type secondary battery attached to a metal plate (usually an aluminum plate) to form battery cells, the battery cells are arranged and fixed, and finally, a water cooling system (even a heat conducting silica gel pad) is arranged at the bottom of each of the plurality of battery cells, as in the battery module using the can type secondary battery, and the heat conduction from the pouch type secondary battery to the water cooling system is realized through the metal plate.
However, the battery module using either the can-type secondary battery or the pouch-type secondary battery needs to be further improved in the assembly of the battery module to improve the assembly efficiency of the battery module and to improve the overall rigidity of the battery module.
Disclosure of Invention
In view of the problems in the background art, an object of the present invention is to provide a frame and a battery module, which can improve the assembly efficiency and the overall rigidity of the battery module.
In order to achieve the above object, in a first aspect, the present invention provides a frame body having: a peripheral wall; a containing cavity which is surrounded by the peripheral wall and is opened along the two axial ends of the frame body; at least one reinforcing rib plate is arranged in the accommodating cavity and divides the accommodating cavity into at least two accommodating spaces, and at least one end of each reinforcing rib plate facing the peripheral wall is connected with the peripheral wall.
In order to achieve the above object, in a second aspect, the present invention provides a battery module comprising: a plurality of secondary batteries. The battery module further includes: according to the frame body of the first aspect of the present invention, each accommodation space accommodates at least one secondary battery correspondingly.
The beneficial effects of the invention are as follows:
when the frame body of the first aspect of the invention is applied to the battery module of the second aspect of the invention, the secondary battery can be directly inserted into the preformed frame body, the design of the frame body and the reinforcing rib plate effectively improves the assembly efficiency of the battery module, enhances the overall rigidity of the battery module, improves the resistance capability of the battery module when being subjected to external impact and/or vibration, enhances the positioning of the secondary battery accommodated in one accommodating space, and can further restrict the deformation of a plurality of secondary batteries under the action of expansion force in charge-discharge cycles.
Drawings
Fig. 1A is a perspective view of an embodiment of a frame according to the present invention.
Fig. 1B is a simplified perspective view of fig. 1A with the reinforcing web removed.
Fig. 2 is a perspective view of the cutaway of fig. 1A.
Fig. 3 is a perspective view of another embodiment similar to fig. 2.
Fig. 4 is an exploded perspective view of a battery module according to the present invention.
Fig. 5 is a perspective view of a part of the constituent members in fig. 4.
Fig. 6 is a partial enlarged view of fig. 5.
Fig. 7 is a perspective view of the body portion of the separator in fig. 5.
Fig. 8 is a perspective view of the separator in fig. 5.
Fig. 9 is an assembled perspective view of fig. 4.
Fig. 10 is a partial enlarged view of fig. 9.
Fig. 11 is a sectional view taken along line A-A in fig. 9, in which one of the receiving spaces receives one secondary battery.
Fig. 12 is a sectional view similar to fig. 11, in which one accommodation space accommodates a plurality of secondary batteries.
Fig. 13 is a cross-sectional view similar to fig. 11 with the frame at least one reinforcing rib attached to the peripheral wall at the lower end only and spaced apart from the peripheral wall at the upper end, and with the at least one reinforcing rib attached to the peripheral wall at the upper end only and spaced apart from the peripheral wall at the lower end.
Fig. 14 is a schematic view of fig. 13 after filling with adhesive.
Fig. 15 shows a plurality of secondary batteries, in which one elastic cushion is provided between each pair of secondary batteries, the elastic cushion completely covering the right side surface of one secondary battery and the left side surface of the other secondary battery.
Fig. 16 is a sectional view showing the plurality of secondary batteries and the elastic cushion of fig. 15 accommodated in a frame body and the frame body is filled with an adhesive.
Fig. 17 shows a plurality of secondary batteries in which one elastic cushion is provided between two adjacent secondary batteries, the elastic cushion completely covering the right side surface of one secondary battery and the left side surface of the other secondary battery.
Fig. 18 is a sectional view showing the plurality of secondary batteries and the elastic cushion of fig. 17 accommodated in a frame body and the frame body is filled with an adhesive.
Fig. 19 shows a plurality of secondary batteries, wherein at least two elastic cushions are provided between each pair of secondary batteries, each elastic cushion not entirely covering the right side surface of one secondary battery and the left side surface of the other secondary battery.
Fig. 20 is a cross-sectional view taken from the cushion pad showing the plurality of secondary batteries and the elastic cushion pad of fig. 19 housed in the frame body and the inside of the frame body filled with the adhesive.
FIG. 21 is a cross-sectional view corresponding to FIG. 20 but not taken from the cushion.
Fig. 22 shows a plurality of secondary batteries in which at least two elastic cushion pads are disposed between adjacent two secondary batteries, each of the elastic cushion pads not entirely covering the right side surface of one secondary battery and the left side surface of the other secondary battery.
Fig. 23 is a sectional view taken from the cushion pad showing the plurality of secondary batteries and the elastic cushion pad of fig. 22 housed in the frame body and the inside of the frame body filled with the adhesive.
FIG. 24 is a cross-sectional view corresponding to FIG. 23 but not taken from the cushion pad.
Fig. 25 is a sectional view showing that one secondary battery is accommodated in each accommodation space, two elastic cushion pads are accommodated in the frame body, and the inside of the frame body is filled with adhesive, and each elastic cushion pad completely covers the right side surface or the left side surface of the secondary battery.
Fig. 26 is a sectional view showing that each of the accommodation spaces accommodates one secondary battery, each of left and right sides of the secondary battery is covered with at least one elastic cushion, the inside of the frame is filled with an adhesive, and the sectional view is taken from the elastic cushion.
FIG. 27 is a cross-sectional view corresponding to FIG. 26 but not taken from the cushion.
Wherein reference numerals are as follows:
1 Battery Module 135 middle glue
11 frame 136 is glued with each other
Lower interconnection adhesive of 111 peripheral wall 137
WT roof 14 partition
WB bottom wall 141 body portion
WS sidewall 1411 through slot
1111 glue injection hole 142 conductive connecting sheet assembly
First conductive connecting piece of 1112 tab 1421
112 first vertical part of accommodating cavity V1
113 first horizontal part of reinforcing rib plate L1
S-shaped holding space 1422 second conductive connecting piece
12 secondary battery V2 second standing part
121 right side face L2 second horizontal part
122 left side 15 end plate
123 first tab 151 plate body
124 second lug 152 insert
13 adhesive 1521 step
131 right side glue F1 first side
132 left side glue F2 second surface
133 underside glue 16 elastic cushion pad
134 upper side glue
Detailed Description
The housing and the battery module according to the present invention will be described in detail with reference to the accompanying drawings.
First, a housing according to a first aspect of the present invention will be described.
As shown in fig. 1A to 3, a housing 11 according to the present invention includes: a peripheral wall 111; a housing cavity 112 which is formed by surrounding and opening along the two axial ends of the frame 11; at least one reinforcing rib 113 disposed in the housing cavity 112 to divide the housing cavity 112 into at least two housing spaces S, at least one end of each reinforcing rib 113 facing the peripheral wall 111 being connected to the peripheral wall 111.
In the case of the frame 11 according to the first aspect of the present invention, when the frame 11 according to the first aspect of the present invention is applied to the battery module 1 according to the second aspect of the present invention described below, the secondary batteries 12 can be directly inserted into the preformed frame 11, the design of the frame 11 and the reinforcing ribs 113 effectively improves the assembly efficiency of the battery module 1, enhances the overall rigidity of the battery module 1, improves the resistance of the battery module 1 to external impact and/or vibration, and the reinforcing ribs 113 in the frame 11 also enhance the positioning of the secondary batteries 12 accommodated in one accommodation space S, and can further restrain the deformation of the plurality of secondary batteries 12 under the expansion force in the charge-discharge cycle.
The peripheral wall 111 is composed of a top wall WT, a bottom wall WB, and two side walls WS, which are a left side wall and a right side wall
At least one end of the reinforcing ribs 113 is connected to the peripheral wall 111, and may take various forms, and in one embodiment, preferably, referring to fig. 1A, both ends of each reinforcing rib 113 in the up-down direction are connected to the top wall WT and the bottom wall WB and parallel to the two side walls WS, respectively. Each reinforcing rib 113 extends from one axial end of the frame 11 to the other axial end of the frame 11.
The frame 11 may be integrally formed by an extrusion and die casting process. The frame 11 is made of aluminum. The extrusion process may be implemented as an integral molding to form a circumferentially closed frame 11.
In the housing 11 according to the first aspect of the present invention, the peripheral wall 111 of the housing 11 is provided with at least one glue injection hole 1111 penetrating therethrough and communicating with the receiving chamber 112. In one embodiment, as shown in fig. 1A, a plurality of glue injection holes 1111 are respectively formed at two axial ends of the top wall WT.
Next, a battery module according to a second aspect of the present invention will be described.
Referring to fig. 4 to 27 in combination with fig. 1A to 3, a battery module 1 according to a second aspect of the present invention includes: a plurality of secondary batteries 12; the battery module 1 further includes: according to the housing 11 of the first aspect of the present invention, each accommodation space S accommodates at least one secondary battery 12.
In the battery module 1 according to the second aspect of the present invention, each accommodation space S of the frame 11 of the first aspect of the present invention accommodates at least one secondary battery 12 correspondingly, the secondary battery 12 can be directly inserted into the preformed frame 11, the design of the frame 11 and the reinforcing rib plates 113 effectively improves the assembly efficiency of the battery module 1, enhances the overall rigidity of the battery module 1, improves the resistance of the battery module 1 when subjected to external impact and/or vibration, and simultaneously, the reinforcing rib plates 113 in the frame 11 also enhance the positioning of the secondary batteries 12 accommodated in one accommodation space S, and can further restrict the deformation of the plurality of secondary batteries 12 under the action of the expansion force in the charge-discharge cycle. In an embodiment, referring to fig. 4 to 27 in combination with fig. 1A to 3, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the receiving cavity 112. The battery module 1 further includes: the adhesive 13 is located in each of the storage spaces S, fixes each of the secondary batteries 12, and adheres each of the secondary batteries 12 to the peripheral wall 111 and the reinforcing rib 113. Further, the peripheral wall 111 of the housing 11 is thermally conductive, and the adhesive 13 is thermally conductive for heat dissipation. More preferably, the adhesive 3 is a thermally conductive structural adhesive, so that not only can the positional fixation and impact resistance of the secondary battery 2 be ensured by the strong adhesion of the structural adhesive, but also the stability of the heat dissipation path can be effectively ensured. In any case, however, the adhesive 3 must have liquid curing properties.
In one embodiment, referring to fig. 1A to 4 and 15 to 27, each secondary battery 12 in each storage space S is covered with an elastic cushion 16 on at least one of the right side 121 and the left side 122 of the secondary battery 12. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the receiving cavity 112, and the battery module 1 further includes: the adhesive glue 13 is located in each storage space S, fixes each secondary battery 12, and adheres each secondary battery 12, each elastic cushion 16, the peripheral wall 111, and the reinforcing rib 113. Further, for heat dissipation, the peripheral wall 111 of the housing 11 is thermally conductive, the adhesive 13 is thermally conductive, and the reinforcing plate 113 is thermally conductive. More preferably, the adhesive 3 is a thermally conductive structural adhesive, so that not only can the positional fixation and impact resistance of the secondary battery 2 be ensured by the strong adhesion of the structural adhesive, but also the stability of the heat dissipation path can be effectively ensured. In any case, however, the adhesive 3 must have liquid curing properties.
The size of the elastic cushion 16 is not limited, and the elastic cushion 16 may cover the right side 121 or the left side 122 of the secondary battery 12 entirely or may cover the right side 121 or the left side 122 of the secondary battery 12 partially. When the elastic cushion 16 partially covers the right side 121 or the left side 122 of the secondary battery 12, one, two, or more elastic cushions 16 may be provided at the right side 121 or the left side 122 of the secondary battery 12 depending on the size of the elastic cushion 16. The elastic cushion 16 may be provided between a pair of the secondary batteries 12, between two adjacent secondary batteries 12, or on both left and right sides of each secondary battery 12.
In the assembly process of the battery module 1, the adhesive 3 is injected into the frame 11 in a liquid state, and after the liquid adhesive 3 is solidified, the adhesive 3 fixes each secondary battery 12 and connects each secondary battery 12 to the upper peripheral wall 111 and the reinforcing rib plate 113, so that the effective constraint fixation of each secondary battery 12 is realized, the assembly efficiency and the overall rigidity of the battery module 1 are improved, and the deformation resistance of the battery module 1 when being impacted and/or vibrated is improved. In addition, since the compressive strength of the adhesive 3 itself is generally lower than that of an electrode assembly (not shown) in the secondary battery 12, which generally includes a positive electrode sheet, a negative electrode sheet, and a separator, the adhesive 3 is easily deformed when the secondary battery 12 expands in charge-discharge cycles, so that the expansion of the secondary battery 12 can be buffered. In addition, the adhesive 3 reduces the requirement for the flatness of the surface of the secondary battery 12 and the requirement for the uniformity of the gap existing in the housing chamber S, and improves the adaptability to the flatness of the surface of the secondary battery 12 and the gap existing in the housing chamber S.
The provision of the elastic cushion 16 helps to ensure a gap for the flow of the liquid adhesive 3; providing a buffer space for generating expansion in charge-discharge cycles of the secondary battery 12; when the battery module 1 is assembled, the arranged secondary batteries 12 and the elastic cushion 16 are easily mounted in the housing space S of the housing 11 based on the elastic compression performance of the elastic cushion 16. In addition, the elastic cushion 16 maintains the structural stability of the secondary battery 12 in the receiving space S based on the elastic recovery performance, so that the secondary battery 12 in the receiving space S does not undergo a large structural change and is not loose when the battery module 1 is subjected to external impact and/or vibration, and the external impact and/or vibration is transmitted to the elastic cushion 16 through one side of the receiving space S to be cushioned and damped while being returned to the opposite side of the receiving space S and further cushioned and damped. Each of the resilient cushioning pads 16 may be foam.
The adhesive 13 and the elastic cushion 16 may be provided independently in the frame 11 or both may be provided in the frame 11. Several cases in which the adhesive 13 and/or the elastic cushion 16 are provided in the housing 11 will be described below.
In one embodiment, referring to fig. 11, the elastic cushion 16 is not provided in the housing 11, and at least one accommodation space S accommodates one secondary battery 12; the adhesive 13 in the accommodation space S includes: a right side adhesive 131 for adhering the right side surface of the secondary battery 12 to the right side wall surface (for example, the right side wall surface of the peripheral wall 111 or the right side wall surface of the reinforcing rib 113) forming the accommodation space S; a left side adhesive 132 for adhering the left side surface of the secondary battery 12 to the left side wall surface (for example, the left side wall surface of the peripheral wall 111 or the left side wall surface of the reinforcing rib 113) forming the accommodation space S; the lower side glue 133 adheres the lower side of the right side glue 131 and the lower side of the left side glue 132 to the peripheral wall 111. In the case where the injection is sufficient, as shown in fig. 11, the adhesive 13 further includes: an upper side glue 134 bonds the upper side of the right side glue 131 and the upper side of the left side glue 132 to the peripheral wall 111.
In one embodiment, referring to fig. 25 in combination with fig. 1A to 4, at least one receiving space S receives one secondary battery 12, and the right side 121 and the left side 122 of the secondary battery 12 are each entirely covered by one elastic cushion 16. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the accommodating cavity 112; the battery module 1 further includes: an adhesive 13 located in the accommodation space S; the adhesive 13 in the accommodation space S includes: the lower adhesive 133 adheres the lower sides of all the elastic cushion 16, the lower side of the left side wall surface forming the accommodation space S, the lower side of the right side wall surface forming the accommodation space S, the lower side of the peripheral wall 111, and the lower side of the secondary battery 12. Further, in the case where the glue injection is sufficient, the adhesive 13 in the accommodating space S further includes: the upper adhesive 134 adheres together the upper sides of all the elastic cushions 16, the upper sides of the left side wall surfaces forming the accommodation space S, the upper sides of the right side wall surfaces forming the accommodation space S, the upper sides of the peripheral wall 111, and the upper sides of the secondary batteries 12.
In one embodiment, referring to fig. 26 and 27 in combination with fig. 1A to 4, at least one receiving space S receives one secondary battery 12, and each of the right side 121 and the left side 122 of the secondary battery 12 is covered by at least one elastic cushion 16. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the accommodating cavity 112; the battery module 1 further includes: adhesive 13 is located in each of the accommodation spaces S. The adhesive 13 in the accommodating space S includes; a right side adhesive 131 for adhering the elastic cushion 16 on the right side of the secondary battery 12 and adhering the right side 121 of the secondary battery 12 to the right side wall surface forming the accommodation space S; a left side adhesive 132 for adhering the left side elastic cushion 16 of the secondary battery 12 and adhering the left side surface 122 of the secondary battery 12 to the left side wall surface forming the accommodation space S; the lower side glue 133 adheres the lower side of the right side glue 131 and the lower side of the left side glue 132 to the peripheral wall 111. Further, with sufficient injection, the upper side glue 134 adheres the upper side of the right side glue 131 and the upper side of the left side glue 132 to the peripheral wall 111.
In one embodiment, referring to fig. 12, the elastic cushion 16 is not provided in the housing 11, and at least one accommodation space S accommodates a plurality of secondary batteries 12; the adhesive 13 in each storage space S includes: a right side adhesive 131 for adhering the right side surface 121 of the outermost right secondary battery 12 in the side-by-side direction in the storage space S to the corresponding right side wall surface forming the storage space S; a left side adhesive 132 for adhering the left side surface 122 of the outermost left secondary battery 12 in the side-by-side direction in the accommodation space S to the corresponding left side wall surface forming the accommodation space S; a lower side glue 133 bonding the lower side of the right side glue 131 and the lower side of the left side glue 132 to the peripheral wall 111; an intermediate adhesive 135 for bonding the adjacent two secondary batteries 12 in the accommodation space S together, and the lower side of the intermediate adhesive 135 is connected to the lower side adhesive 133 to bond the lower side of the intermediate adhesive 135 to the peripheral wall 111. Further, in the case where the injection of the adhesive is sufficient, as shown in fig. 12, the adhesive 13 further includes: the upper side glue 134 adheres the upper side of the right side glue 131, the upper side of the left side glue 132 and the upper side of the middle glue 135 to the peripheral wall 111.
In one embodiment, referring to fig. 15 and 16 in combination with fig. 1A to 4, at least one receiving space S receives a plurality of secondary batteries 12, and only two adjacent secondary batteries 12 within the receiving space S have one elastic cushion 16 therebetween, and each of the right and left adjacent sides 121 and 122 of the two secondary batteries 12 is entirely covered with the elastic cushion 16. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the receiving cavity 112, and the battery module 1 further includes: adhesive 13 is located in each of the accommodation spaces S. The adhesive 13 in the accommodation space S includes: the lower adhesive 133 bonds the lower sides of all the elastic cushions 16, the lower side of the left side wall surface forming the accommodation space S, the lower side of the right side wall surface forming the accommodation space S, the lower side of the peripheral wall 111, and the lower sides of the plurality of secondary batteries 12 together. Further, the adhesive 13 in the accommodating space S further includes: the upper adhesive 134 adheres together the upper sides of all the elastic cushions 16, the upper sides of the left side wall surfaces forming the accommodation space S, the upper sides of the right side wall surfaces forming the accommodation space S, the upper sides of the peripheral wall 111, and the upper sides of the plurality of secondary batteries 12.
In one embodiment, referring to fig. 17 and 18, at least one accommodation space S accommodates a plurality of secondary batteries 12, and each of right side 121 and left side 122 of each secondary battery 12 in the accommodation space S is entirely covered with one elastic cushion 16. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the receiving cavity 112, and the battery module 1 further includes: adhesive 13 is located in each of the accommodation spaces S. The adhesive 13 in the accommodation space S includes: the lower adhesive 133 bonds the lower sides of all the elastic cushions 16, the lower side of the left side wall surface forming the accommodation space S, the lower side of the right side wall surface forming the accommodation space S, the lower side of the peripheral wall 111, and the lower sides of the plurality of secondary batteries 12 together. Further, the adhesive 13 in the accommodating space S further includes: the upper adhesive 134 adheres together the upper sides of all the elastic cushions 16, the upper sides of the left side wall surfaces forming the accommodation space S, the upper sides of the right side wall surfaces forming the accommodation space S, the upper sides of the peripheral wall 111, and the upper sides of the plurality of secondary batteries 12.
In an embodiment, referring to fig. 19, 20, and 21 in combination with fig. 1A to 4, at least one accommodating space S accommodates a plurality of secondary batteries 12, and at least one elastic cushion 16 is provided between only two adjacent secondary batteries 12 in the accommodating space S, and adjacent right and left sides 121 and 122 of the two adjacent secondary batteries 12 are not completely covered by the at least one elastic cushion 16. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the receiving cavity 112, and the battery module 1 further includes: the adhesive 13 is located in the accommodation space S. The adhesive 13 in the accommodation space S includes: a right side adhesive 131 for adhering the right side surface 121 of the outermost right secondary battery 12 in the side-by-side direction in the storage space S to the right side wall surface forming the storage space S; a left side adhesive 132 for adhering the left side surface 122 of the outermost left secondary battery 12 in the side-by-side direction in the storage space S to the left side wall surface forming the storage space S; a lower side glue 133 bonding the lower side of the right side glue 131 and the lower side of the left side glue 132 to the peripheral wall 111; an intermediate adhesive 135 which adheres the elastic cushion 16 between the adjacent two secondary batteries 12 in the accommodation space S and adheres the adjacent right side 121 and left side 122 of the adjacent two secondary batteries 12 in the accommodation space S together, and the lower side of the intermediate adhesive 135 and the lower side adhesive 133 are connected together to adhere the lower side of the intermediate adhesive 135 and the peripheral wall 111 together. Further, the adhesive 13 in the accommodating space S further includes: the upper side glue 134 adheres the upper side of the right side glue 131, the upper side of the left side glue 132 and the upper side of the middle glue 135 to the peripheral wall 111.
In one embodiment, referring to fig. 22, 23, and 24 in combination with fig. 1A to 4, at least one accommodation space S accommodates a plurality of secondary batteries 12, and each of right and left sides 121 and 122 of each secondary battery 12 in the accommodation space S is not completely covered by at least one elastic cushion 16. Further, the peripheral wall 111 of the frame 11 is provided with at least one glue injection hole 1111 penetrating and communicating with the receiving cavity 112, and the battery module 1 further includes: the adhesive 13 is located in the accommodation space S. The adhesive 13 in the accommodation space S includes: a right side adhesive 131 for adhering the outermost right side elastic cushion 16 in the side-by-side direction in the storage space S and adhering the right side surface 121 of the outermost right side secondary battery 12 in the side-by-side direction in the storage space S to the right side wall surface forming the storage space S; a left side adhesive 132 for adhering the outermost left elastic cushion 16 in the side-by-side direction in the storage space S and adhering the left side surface 122 of the outermost left secondary battery 12 in the side-by-side direction in the storage space S to the left side wall surface forming the storage space S; a lower side glue 133 bonding the lower side of the right side glue 131 and the lower side of the left side glue 132 to the peripheral wall 111; an intermediate adhesive 135 which adheres the elastic cushion 16 between the adjacent two secondary batteries 12 in the accommodation space S and adheres the adjacent right side 121 and left side 122 of the adjacent two secondary batteries 12 in the accommodation space S together, and the lower side of the intermediate adhesive 135 and the lower side adhesive 133 are connected together to adhere the lower side of the intermediate adhesive 135 and the peripheral wall 111 together. Further, the adhesive 13 in the accommodating space S further includes: the upper side glue 134 adheres the upper side of the right side glue 131, the upper side of the left side glue 132 and the upper side of the middle glue 135 to the peripheral wall 111.
In the embodiment shown in fig. 11 and 12, both ends in the up-down direction of each reinforcing rib 113 are connected to the peripheral wall 111.
One end of at least one reinforcing plate 113 is connected to the peripheral wall 111 as will be described below.
Referring to fig. 13 and 14, at least one reinforcing rib 113 is connected to the peripheral wall 111 only at a lower end and spaced apart from the peripheral wall 111 at an upper end, and the battery module 1 further includes: an upper interconnection adhesive 136 which is positioned above the reinforcing rib 113 spaced apart from the peripheral wall 111 at the upper end and connects the upper adhesive 134 of the adjacent two accommodation spaces S together; or at least one reinforcing rib 113 is connected to the peripheral wall 111 only at an upper end and spaced apart from the peripheral wall 111 at a lower end, the battery module 1 further includes: the lower interconnection glue 137 is located below the reinforcing rib 113 spaced apart from the peripheral wall 111 at the lower end and connects the lower glue 133 of the adjacent two accommodation spaces S together.
In the above-described embodiments, the battery module 1 according to the second aspect of the present invention adopts the assembly design of the frame 11 and the adhesive 13 to improve the assembly efficiency and the overall strength of the battery module 1; and the left and right sides and upper and lower both sides of each secondary battery 12 all with bonding adhesive 13 in close contact, the heat that each secondary battery 12 each position produced can pass through bonding adhesive 13 with shortest route with heat transfer for gusset 113 and perisporium 111 of framework 11, and then transmit for outside cooling system (not shown), the problem that the planarization of laminating between aluminum plate and secondary battery 12 in prior art can't be guaranteed has been avoided, greatly increased battery module 1's heat radiating area, the radiating efficiency of battery module 1 has been improved to a great extent. And simultaneously, the internal space utilization rate of the battery module 1 is improved.
In the battery module 1 according to the second aspect of the invention, as shown in fig. 4 to 8, the battery module 1 further includes: two isolation plates 14 provided at both axial ends of the frame 11, respectively; each of the partition plates 14 includes: a body portion 141; the plurality of conductive connecting pad assemblies 142 are arranged on the surface of the body portion 141 at intervals. The separator 14 is an insulating material. The choice of insulating material is not limited, and each of the spacers 14 is preferably plastic.
Specifically, referring to fig. 5 and 6, each conductive tab assembly 142 includes: a first conductive connecting piece 1421 having a first vertical portion V1 and a first horizontal portion L1 connected to the first vertical portion V1; a second conductive connecting piece 1422 having a second vertical portion V2 and a second horizontal portion L2 connected to the second vertical portion V2; the first vertical portion V1 of the first conductive connecting piece 1421 and the second vertical portion V2 of the second conductive connecting piece 1422 are opposite to each other and are spaced apart from each other and fixed to the body portion 141 of the isolation board 14, and the first horizontal portion L1 of the first conductive connecting piece 1421 is overlapped and welded to the second horizontal portion L2 of the second conductive connecting piece 1422.
The secondary battery 2 may take various forms, and may be a pouch-type secondary battery and a can-type secondary battery depending on the type of case. The case of the pouch-type secondary battery is made of a laminate sheet including a polymer layer and a metal layer. The can type secondary battery case is generally composed of a metal case and a metal top sheet.
In one embodiment, each accommodation space S of the housing 11 accommodates one secondary battery 12 correspondingly; two sides of a first vertical part V1 of the adjacent first conductive connecting sheet 1421 of the body part 141 are respectively provided with a through groove 1411; two sides of a second vertical part V2 of the adjacent second conductive connecting sheet 1422 of the body part 141 are respectively provided with a through groove 1411; each secondary battery 12 is a pouch-type secondary battery, having first tabs 123 and second tabs 124 of opposite polarity and extending toward the two axial ends of the frame 11, two first tabs 123 of each adjacent two secondary batteries 12 passing through grooves 1411 on both sides of a first upright portion V1 of a corresponding first conductive connecting piece 1421 and being bent over the first conductive connecting piece 1421, and two second tabs 124 passing through grooves 1411 on both sides of a second upright portion V2 of a corresponding second conductive connecting piece 1422 and being bent over the corresponding second conductive connecting piece 1422. The first tab 123 and the second tab 124 of each secondary battery 12 pass through the corresponding through groove 1411, and can perform a function of limiting the plurality of secondary batteries 12, while ensuring that a gap for filling the liquid adhesive 13 exists between each secondary battery 12 and the peripheral wall 111 and the reinforcing rib 113 of the housing 11. In an alternative embodiment, the first tab 123 and the second tab 124 of each secondary battery 12 may be located at one axial end.
The first conductive connecting piece 1421 is made of copper, and correspondingly, the first tab 123 of the secondary battery 12 is made of copper; the second conductive connecting piece 1422 is made of aluminum, and correspondingly, the second tab 124 of the secondary battery 12 is made of aluminum.
As shown in fig. 4, 9 and 10, the battery module 1 further includes: the two end plates 15 are fixedly connected to the two axial ends of the frame 11, respectively, so as to seal the receiving cavities 112 of the frame 11 at the two axial ends, respectively.
Each end plate 15 includes: a plate body 151; two inserts 152 are fixedly disposed on the left and right sides of the plate 151, and each insert 152 is partially embedded in the plate 151 and fixedly connected to the peripheral wall 111 of the frame 11.
The plate 151 is made of plastic, and the insert 152 is made of aluminum. The plate 151 is integrally injection molded with the two inserts 152.
The peripheral wall 111 of the housing 11 is provided with protrusions 1112 protruding outward in the axial direction at both ends in the axial direction; each of the inserts 152 has a stepped portion 1521, the stepped portion 1521 has a first face F1 and a second face F2 intersecting the first face F1, the protrusions 1112 of the housing 11 are abutted against the first face F1, and the peripheries of the protrusions 1112 of the housing 11 are welded together with the edges of the first face F1 and the edges of the second face F2. Preferably, the side seam lap welding is adopted, so that the welding quality of the battery module 1 can be effectively ensured, and the yield of the battery module 1 is improved.
The assembling steps of the battery module 1 according to the second aspect of the present invention are briefly described below.
First, each secondary battery 12 is placed in a corresponding one of the storage spaces S of the housing 11; next, each of the separators 14 is mounted at both ends in the axial direction of the plurality of secondary batteries 12 arranged side by side; the liquid adhesive 13 is injected through the adhesive injection holes 1111 of the frame 11, gaps between the accommodating space S of the frame 11 and the plurality of secondary batteries 12 and other components are effectively filled through the liquid adhesive 13 in a flowing mode, and the frame 11 and the plurality of secondary batteries 12 are integrated after the liquid adhesive 13 is solidified; finally, the insert 152 of each end plate 15 is welded to the convex portion 1112 at one axial end of the frame 11 (the frame 11 and the periphery of the plate 151 of the end plate 15 are welded by laser).
Claims (8)
1. A battery module (1) comprising:
a plurality of secondary batteries (12); the secondary battery is a pouch-type secondary battery;
the battery module (1) is characterized by further comprising a frame body (11);
the housing (11) has:
a peripheral wall (111); and
a housing cavity (112) surrounded by the peripheral wall (111) and opening along the two axial ends of the frame (11);
at least one reinforcing rib plate (113) arranged in the accommodating cavity (112) and dividing the accommodating cavity (112) into at least two accommodating spaces (S), wherein each accommodating space (S) is used for accommodating at least one secondary battery (12) correspondingly, and at least one end, facing the peripheral wall (111), of each reinforcing rib plate (113) is connected to the peripheral wall (111);
each secondary battery (12) in each storage space (S) is covered with an elastic buffer pad (16) on at least one of the right side surface (122) and the left side surface (121) of the secondary battery (12), and the right side surface (122) and the left side surface (121) face the reinforcing rib plate (113), wherein the right side surface (122) and the left side surface (121) of the secondary battery (12) have the same area and are the largest surface of the secondary battery (12).
2. The battery module (1) according to claim 1, wherein the frame body (11) is integrally formed.
3. The battery module (1) according to claim 1 or 2, wherein,
the peripheral wall (111) of the frame body (11) is provided with at least one glue injection hole (1111) which is communicated with the accommodating cavity (112), and the glue injection hole (1111) is used for injecting the bonding glue (13).
4. The battery module (1) according to claim 3, wherein,
the adhesive (13) is thermally conductive.
5. The battery module (1) according to claim 3, wherein,
the secondary batteries (12), the elastic cushions (16), the peripheral wall (111) and the reinforcing rib plates (113) are bonded by the adhesive (13) positioned in the accommodating spaces (S).
6. The battery module (1) according to claim 1, wherein,
both ends of each reinforcing rib plate (113) in the up-down direction are connected to the peripheral wall (111).
7. The battery module (1) according to claim 1, wherein,
the peripheral wall (111) of the frame body is heat-conducting, and the reinforcing rib plates (113) are heat-conducting.
8. The battery module (1) according to claim 1, wherein,
the frame body (11) further comprises two isolation plates (14) which are respectively arranged at two axial ends of the frame body, and each isolation plate comprises a body part (141);
the body part (141) is provided with a through groove (1411);
the secondary battery (12) has a first tab (123) and a second tab (124) which are opposite in polarity and extend toward both axial ends of the frame (11), respectively, and the first tab (123) and the second tab (124) pass through grooves (1411) of a separator at both axial ends of the frame, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710770247.5A CN109428021B (en) | 2017-08-31 | 2017-08-31 | Frame and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710770247.5A CN109428021B (en) | 2017-08-31 | 2017-08-31 | Frame and battery module |
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| Publication Number | Publication Date |
|---|---|
| CN109428021A CN109428021A (en) | 2019-03-05 |
| CN109428021B true CN109428021B (en) | 2024-04-02 |
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| CN201710770247.5A Active CN109428021B (en) | 2017-08-31 | 2017-08-31 | Frame and battery module |
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| CN (1) | CN109428021B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021006042A1 (en) * | 2019-07-10 | 2021-01-14 | 本田技研工業株式会社 | Power storage module and manufacturing method for power storage module |
| JP7267129B2 (en) * | 2019-07-10 | 2023-05-01 | 本田技研工業株式会社 | storage module |
| CN111312964B (en) * | 2020-04-24 | 2022-01-07 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| CN113644350A (en) * | 2020-04-24 | 2021-11-12 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| CN113782904B (en) * | 2020-05-22 | 2023-04-07 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| CN113782890B (en) * | 2020-05-22 | 2024-05-07 | 比亚迪股份有限公司 | Battery pack and electric vehicle |
| CN113782899B (en) * | 2020-05-22 | 2024-05-07 | 比亚迪股份有限公司 | Battery pack shell, battery pack and electric vehicle |
| CN111682282B (en) * | 2020-05-27 | 2023-08-08 | 风帆（扬州）有限责任公司 | High-efficient heat dissipation battery |
| CN111682139A (en) * | 2020-06-19 | 2020-09-18 | 风帆（扬州）有限责任公司 | High-strength power energy storage battery |
| KR20210157005A (en) * | 2020-06-19 | 2021-12-28 | 주식회사 엘지에너지솔루션 | Battery module and battery pack including the same |
| CN112349991B (en) * | 2020-09-14 | 2022-03-18 | 比亚迪股份有限公司 | Battery energy storage device |
| EP4057404A1 (en) * | 2021-03-10 | 2022-09-14 | Crompton Technology Group Limited | Battery stack casing |
| EP4057405A1 (en) * | 2021-03-10 | 2022-09-14 | Crompton Technology Group Limited | Battery stack casing |
| JP7424337B2 (en) * | 2021-03-31 | 2024-01-30 | トヨタ自動車株式会社 | Power storage device |
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| CN109428021A (en) | 2019-03-05 |
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