CN213752852U - Battery module based on battery is divided into groups and buffer between groups is connected - Google Patents
Battery module based on battery is divided into groups and buffer between groups is connected Download PDFInfo
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- CN213752852U CN213752852U CN202022576923.5U CN202022576923U CN213752852U CN 213752852 U CN213752852 U CN 213752852U CN 202022576923 U CN202022576923 U CN 202022576923U CN 213752852 U CN213752852 U CN 213752852U
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- connecting row
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery module based on battery grouping and inter-group buffer connection, which comprises a module frame and a battery array accommodated in the module frame; the battery array comprises two battery packs; the battery pack consists of an even number of batteries; the battery is in a strip square structure, and the polar columns of two electrodes of the battery are respectively positioned at two ends of the battery; the pole of the battery is positioned at the end part of the battery pack; the tip of group battery is equipped with two and carries out the battery of utmost point post butt joint through U-shaped buffering connection row and adjacent group battery. The utility model discloses a battery to in the battery module is divided into groups and is formed the group battery, and the battery is organized and is connected through the U-shaped buffering run-on, makes from this can have the effect that the buffering is connected between inside group battery of battery module and the group battery.
Description
Technical Field
The utility model belongs to the technical field of power battery, a battery module based on battery is divided into groups and buffer between groups is connected is related to.
Background
With the improvement of the requirement of the human society on environmental protection and the requirement of low-carbon life of people, the electric vehicle or the hybrid vehicle is about to replace the existing fuel vehicle, and a large-scale energy storage power station is established to be used for assisting a main power grid and utilizing various new energy sources, which are development directions in the future. The battery pack is particularly important as a core energy source of an electric automobile and an energy storage power station, namely a power battery pack.
Under the prior art, the electric motor car is also different thereupon for the space of battery box because the difference of motorcycle type to appear not unidimensional battery box, the battery package is installed in the battery box, and the battery includes a plurality of battery module, and the battery module is by a plurality of battery cluster, parallelly connected battery module that forms. At present, the battery of the integrated battery module is not manufactured in a standardized way, the integration level is poor, and the trouble of low yield caused by waste time and waste of the waste industry is caused for a battery module generating manufacturer.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the problem that will solve: the utility model discloses a carry out the standardized group battery of grouping integration to the battery in the battery module, the battery module of standardized group battery through the integrated different specifications of U-shaped buffering connecting row is in order to adapt to not unidimensional battery box, and the integrated level is high, and the flexibility ratio is high.
In order to solve the above problem, the utility model discloses a scheme as follows:
a battery module based on battery grouping and inter-group buffer connection comprises a module frame and a battery array accommodated in the module frame; the battery array comprises two battery packs; the battery pack is composed of an even number of battery arrays; the battery is in a strip square structure, and the polar columns of two electrodes of the battery are respectively positioned at two ends of the battery; the pole of the battery is positioned at the end part of the battery pack; and the inner sides of the two battery packs are in pole butt joint through the two U-shaped buffer connecting rows arranged at the end parts of the battery packs.
Furthermore, an insulating layer is arranged on the inner side of the U-shaped buffer connecting row.
Further, the insulating layer is an insulating buffer pad arranged on the inner side of the U-shaped buffer connecting row, or an insulating coating coated on the inner side surface of the U-shaped buffer connecting row.
Further, still include middle-end insulation assembly, middle-end insulation assembly sets up between adjacent group battery, is equipped with on it to be used for dodging U-shaped buffering connection row dodge the hole, pass through between the adjacent group battery middle-end insulation assembly insulates.
Furthermore, the middle-end insulation assembly comprises a middle-end connecting row frame plate and a connecting row insulation cover plate, the middle-end connecting row frame plate is respectively tightly attached to the opposite end faces of the adjacent battery packs, a series connecting row is arranged in a connecting row groove of the middle-end connecting row frame plate, and the series connecting row is connected with a pole of an end electrode of the battery pack; the connecting row insulating cover plate is fixedly connected to one of the middle-end connecting row frame plates to separate and insulate the series connecting rows on the adjacent battery packs.
Further, the U-shaped buffer connecting row is arranged between the poles of the outermost batteries.
Further, the U-shaped mouth of the U-shaped buffer connecting row faces towards the outside.
Furthermore, after the batteries of one battery pack are connected in series, the batteries of the other battery pack are connected in series through the U-shaped buffer connecting row, and the outer side end of the other battery pack is connected with the output electrode of the battery module.
Furthermore, two poles connected with the output electrode of the battery module are respectively positioned on two adjacent batteries at the innermost side of the battery pack.
Furthermore, two poles connected with the output electrode of the battery module are respectively positioned on two adjacent batteries on the outermost side of the battery pack.
The technical effects of the utility model are as follows: the utility model discloses a battery to in the battery module is divided into groups and is formed the group battery, and the battery is organized and is connected through the U-shaped buffering run-on, makes from this can have the effect that the buffering is connected between inside group battery of battery module and the group battery.
Drawings
Fig. 1 is an exploded view of the overall structure of the battery module according to the embodiment of the present invention.
Fig. 2 is a schematic view of the overall structure of the battery module according to the embodiment of the present invention.
Fig. 3 is a schematic structural view of a middle-end insulating assembly in an embodiment of the battery module of the present invention.
Fig. 4 is a middle-end exploded view of an embodiment of the battery module of the present invention.
Fig. 5 is a schematic structural view of a middle-end connecting row frame plate.
Fig. 6 is a schematic structural view of a U-shaped buffer connecting row.
Fig. 7 is an exploded front end view of an embodiment of the battery module of the present invention.
Fig. 8 is a rear exploded view of an embodiment of the battery module according to the present invention.
Fig. 9 is an exploded schematic view of the battery.
Fig. 10 is an exploded view of the negative terminal of the cell.
Fig. 11 is a schematic structural view of the collection and collection rack.
Fig. 12 is an enlarged view of a dotted circle portion in fig. 11.
Fig. 13 is an exploded schematic view among the voltage detection terminal, the temperature detection terminal, and the terminal fitting.
Fig. 14 and 15 are schematic views illustrating the connection of the battery module according to the present invention.
Wherein the content of the first and second substances,
101 is a module frame, 11 is a t-shaped plate frame, 12 is a front end assembly, 13 is a rear end assembly, 15 is a front end, 16 is a rear end, 8 is an L-shaped plate, 81 is a top plate, 82 is a side plate, 821 is a side plate end extension, 83 is a bottom plate, and 84 is an explosion opening;
17 is a battery accommodating cavity, and 18 is a collection support frame;
102 is a battery array, 200 is a battery pack, 21 is a battery, 211 is a pole, and 212 is an explosion-proof valve; 21N is a battery negative electrode terminal, 21P is a battery positive electrode terminal, 22 is a single cell collecting plate, 221 is a back plate, 222 is a voltage detection terminal, 223 is a temperature detection terminal, 224 is a temperature sensor, 225 is a voltage heat conducting pole attaching plate, 23 is a battery protection frame, and 25 is a heat conducting layer;
103 is a U-shaped buffer connecting row, 1031 is a connecting portion, 1032 is a bent portion, 1033 is an insulating buffer, 109 is a balance buffer;
104 is a middle-end insulation component, 1041 is an avoidance hole, 71 is a middle-end connecting row frame plate, 711 is a pole hole, 7111 is a pole clamping boss, 712 is a connecting row groove, and 7121 is a clamping fixing pin; 713 is a collection plate avoidance slot; 72 is a connecting row insulating cover plate;
105 is a collection assembly, 51 is a collection frame, 511 is a transverse support bar, 512 is a longitudinal support bar, 513 is a terminal connector, 514 is a buffer convex bridge, 52 is a collection interface, 53 is an interface frame, 531 is an interface frame deck plate, and 532 is an interface frame socket;
31 is a front end connecting row frame plate, 32 is a serial connecting row, 33 is an output electrode lug, 34 is an insulating cover plate, 341 is a lug hole, 35 is a narrow side plate, 351 is a side vertical surface, 36 is a front end plate, 361 is a lug seat inserting hole, 362 is a front end mounting hole, 363 is a front end plate side surface, 37 is a lug supporting piece, 371 is a lug supporting groove, 372 is a lug seat inserting hole;
41 is a rear end connecting row frame plate, 42 is a rear end plate, 421 is an interface frame seat inserting hole, 422 is a rear end mounting hole, 423 is a rear end plate side surface.
61 is a terminal shell, 62 is a plug pin, 63 is a connector accommodating cavity, and 64 is a hasp opening;
91 is a plug body, 92 is a spring plate, and 93 is a snap projection;
f is the direction in which the front and rear ends of the battery module face, and the arrow F points from the rear end of the battery module to the front end of the battery module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a battery module based on battery grouping and inter-pack buffer connection includes a module frame 101 and a battery array 102 housed in the module frame 101.
The module frame 101 comprises a port frame 11, a front end assembly 12 and a rear end assembly 13, the port frame 11 is formed by buckling and welding two elongated L-shaped plates 8, wherein one L-shaped plate 8 comprises a side plate 82 and a top plate 81, and the other L-shaped plate 8 comprises the other side plate 82 and a bottom plate 83. Inside the port frame 11 is a battery accommodating cavity 17. The two ends of the window frame 11 are respectively a front end 15 and a rear end 16. The front end 15 and the rear end 16 of the knife frame 11 are also the front end 15 and the rear end 16 of the battery module. The battery array 102 is placed in the battery accommodating cavity 17 of the mouthpiece 11, and a front end opening and a rear end opening of the mouthpiece 11 are respectively packaged by the front end assembly 12 and the rear end assembly 13, so that the battery array 102 is packaged in the mouthpiece 11 by the front end assembly 12 arranged at the front end opening and the rear end assembly 13 arranged at the rear end opening.
The battery array 102 includes two battery packs 200. The battery pack 200 is composed of an even number of cells 21 arranged. The battery 21 has a rectangular and square structure, and the two electrode posts 211 are respectively located at two ends of the battery. The pole 211 of the battery 21 is located at the end of the battery pack 200. The end of the battery pack 200 is in pole 211 butt joint with the adjacent battery pack 200 through two U-shaped buffer connecting rows 103. Specifically, as shown in fig. 14 and 15, the batteries 21 in the two battery packs 200 are connected in series with the adjacent batteries 21, the two battery packs 200 are in pole-to-pole contact with each other through the two U-shaped buffer connection rows 103 provided at the inner ends of the battery packs 200, the batteries 21 of the two battery packs 200 are connected in series and integrated, and the batteries 21 connected in series and integrated are connected to the output electrode tab 33 in the front end module 12 through the pole 211 of the two batteries 21 of one battery pack 200. The output electrode tab 33 serves as an output electrode of the battery module. Here, series connection refers to connection of the positive electrode of one cell 21 to the negative electrode of another cell 21.
The U-shaped buffer connecting row 103 is connected with the pole 211 through welding. In order to facilitate the welding between the U-shaped buffer connection row 103 and the pole 211, the U-shaped buffer connection row 103 is disposed between the poles 211 of the outermost batteries 21 of the battery pack 200, and the U-shaped mouth of the U-shaped buffer connection row 103 faces outward. Thus, the two U-shaped buffer rows 103 are arranged in bilateral symmetry.
It should be noted that the two poles 21 to which the output electrode tabs 33 are connected may be respectively located on the two adjacent cells 21 on the innermost side of the battery assembly 200, see fig. 14, or may be respectively located on the two adjacent cells 21 on the outermost side of the battery assembly 200, see fig. 15.
The U-shaped buffer connection row 103 is preferably a connection row with a U-shaped buffer structure formed by bending a straight aluminum row or a straight copper row, as shown in fig. 6 and 15, and includes two connection portions 1031 for connecting the poles 211 and a bending portion 1032 for connecting the two connection portions 1031. Wherein the elasticity provided by the bend 1032 enables the U-shaped cushioning link row 103 to provide cushioning. The connecting portion 1031 is a plate body for connecting the pole 211 of the battery 21. Specifically, after the outer side surfaces of the two connecting portions 1031 of the U-shaped buffer connecting bar 103 are respectively attached to the end surfaces of the poles 211 of the two batteries 21, the two connecting portions 1031 are welded to the poles 211 by a side seam welding process, so that the two connecting portions 1031 are respectively connected to the poles 211 of the two batteries 21.
Further, an insulating layer may be further disposed on the inner side of the U-shaped buffer connecting row 103. In this embodiment, referring to fig. 6, the insulating layer is an insulating bumper 1033 clamped inside the two connecting portions 1031 of the U-shaped bumper connecting row 103. The insulating buffer 1033 is connected to the two connecting portions 1031 by adhesive bonding. It is understood by those skilled in the art that the insulation layer may also be implemented by coating the inner side surface of the U-shaped buffer connecting row 103 with an insulation coating.
As shown in fig. 3, 4 and 5, the battery module further includes a middle-end insulating assembly 104, the middle-end insulating assembly 104 is disposed between adjacent battery packs 200, an avoiding hole 1041 for avoiding the U-shaped buffer connection row 103 is disposed on the middle-end insulating assembly 104, and the adjacent battery packs 200 are insulated by the middle-end insulating assembly 104. The middle-end insulation assembly 104 comprises a middle-end connecting row frame plate 71 and a connecting row insulation cover plate 72, the middle-end connecting row frame plate 71 is respectively clung to the opposite end surfaces of two adjacent battery packs 200, a serial connection row 32 is arranged in a connecting row groove 712 of the middle-end connecting row frame plate 71, and the serial connection row 32 is connected with a pole 211 of an end electrode of the battery pack 200; the connecting row insulating cover plate 72 is fixedly connected to one of the middle-end connecting row frame plates 71 to isolate and insulate the serial connecting rows 32 of the adjacent battery packs 200. Specifically, in the present embodiment, the middle-end connecting rack plate 71 is a hollow plate body, and is provided with a pole hole 711 corresponding to the pole 211 on the opposite end surface between two adjacent battery packs 200, and two pole clamping bosses 7111 are respectively arranged on the two opposite inner side surfaces of the pole hole 711; around the pole hole 711, the front surface of the middle end connection row frame plate 71 is provided with a connection row groove 712, and the back surface is provided with a collection plate avoiding groove 713. The even number of the pole holes 711 are provided such that one connecting row groove 712 is provided for two adjacent pole holes 711, so that the connecting row groove 712 communicates the adjacent two pole holes 711. The middle-end connecting row frame plate 71 is provided with avoidance holes, and the U-shaped buffer connecting row 103 is avoided through the avoidance holes; the connecting row groove 712 is used for accommodating the serial connecting row 32, and the connecting row groove 712 is provided with a clamping fixing pin 7121 for fixing the serial connecting row 32; the collecting plate escape groove 713 is used for accommodating the single cell collecting plate 22 at the end of the cell 21; the middle connection row frame plate 71 is provided with a plurality of clamping fixing feet 7121 for fixing the connection row insulation cover plate 72 at the periphery. The end surfaces of the adjacent battery packs 200 are respectively connected with a middle-end connecting row frame plate 71, and the middle-end connecting row frame plates 71 are tightly attached to the end surfaces of the connected battery packs 200; the connecting row insulating cover plate 72 is fixedly connected to the middle-end connecting row frame plate 71, and covers and insulates the serial connecting row 32 in the connecting row groove 712 therein; the middle-end connection row frame plate 71 is attached to the end face of the battery pack 200, the pole 211 on the end face of the battery pack 200 penetrates through the pole hole 711, so that the middle-end connection row frame plate 71 can be closely attached to the end face of the battery pack 200, and meanwhile, the middle-end connection row frame plate 71 clamps the pole 211 through the pole clamping boss 7111 on the pole hole 711, so that the middle-end connection row frame plate 71 is fixed to the end face of the battery pack 200. The pole 211 passing through the pole hole 711 is connected with the serially connected connecting bar 32 fixed in the connecting bar groove 712 through the clamping fixing foot 7121; the connecting row insulating cover plate 72 is clamped and fixed on the middle-end connecting row frame plate 71 through a clamping fixing foot 7121 to cover and insulate the internal serial connecting row 32.
As shown in fig. 7, the front end module 12 includes a front end connector row frame plate 31, a tandem connector row 32, an output electrode tab 33, an insulating cover plate 34, narrow side plates 35, and a front end plate 36. The structure of the front end connecting row frame plate 31 is similar to that of the middle end connecting row frame plate 71, except that the front end connecting row frame plate 31 has the polar lug grooves but does not have the avoiding holes, so the detailed structure of the front end connecting row frame plate 31 is not described in detail in this specification. In the battery pack 200 located at the front end of the battery array 102, the terminal 211 on the front end face of the battery pack passes through the terminal hole of the front end connecting row frame plate 31 and then is connected with the serial connecting row 32 fixed in the connecting row groove of the front end connecting row frame plate 31; wherein, the polar posts 211 of the two batteries 21 are connected with the output electrode polar lugs 33 fixed in the polar lug grooves by clamping fixing pins; the insulating cover plate 34 is connected to the front end connecting rack plate 31 in a snap-fit manner; the narrow side plate 35 is arranged between the insulating cover plate 34 and the front end plate 36, the narrow side plate 35 and the front end plate 36 are both in plate structures, the narrow side plate 35 is fixed at the front end of the port frame 11, and the front end of the port frame 11 is sealed through the narrow side plate 35; a narrow side plate 35 is tightly attached to the insulating cover plate 34, and a front end plate 36 is fixedly connected with the port plate frame 11 and tightly attached to the narrow side plate 35; wherein, the insulating cover plate 34 is provided with a pole ear hole 341. A tab support 37 is provided on the front end plate 36. Specifically, the front end plate 36 is a plate body with a certain thickness, and is hollowed out along the plate body direction. The top of the front end plate 36 is provided with two polar ear mount receptacles 361. The tab support member 37 includes a tab support groove 371 and a tab receptacle 372. The tab support groove 371 is provided on the tab holder 372, and the tab support member 37 is inserted into the tab holder insertion hole 361 through the tab holder 372 and positioned on the top of the front end plate 36, so that the tab support member 37 is fixed to the front end plate 36. The output electrode tab 33 is a bent tab, one end of which is fixedly accommodated in the tab slot of the front end connecting row frame plate 31 and connected with the tab 211, and the other end of which is accommodated in the tab supporting slot 371 of the tab supporting member 37 after passing through the tab hole 341 of the insulating cover plate 34. Specifically, the narrow side plate 35 and the front end plate 36 are both plate structures made of aluminum, the narrow side plate 35 is welded to the front end of the port frame 11 made of the same material through the side elevation 351, and the structural strength of the battery accommodating cavity 17 in the port frame 11 is improved through the narrow side plate 35. A front end plate 36 is fixed on the port frame 11 and clings to a front narrow side plate 35; specifically, the side plate 82 has side plate end extensions 821 at both ends thereof that have a length greater than the top plate 81 and the bottom plate 83. The two front end plate sides 363 of the front end plate 36 are clamped between the side plate end extensions 821 at the front ends of the two side plates 82 and are connected to the side plate end extensions 821 by welding.
As shown in FIG. 8, the rear end module 13 includes a rear connection row frame plate 41, a tandem connection row 32, an insulating cover plate 34, narrow side plates 35, and a rear end plate 42; the rear connecting row frame plate 41 has a similar structure to the middle connecting row frame plate 71, except that the middle connecting row frame plate 71 has a relief hole. Therefore, the detailed structure of the rear connecting rack plate 41 is not described in detail in this specification. The poles 211 on the rear end face of the battery array 102 pass through the pole holes on the rear end connecting row frame plate 41 and are connected to the serial connecting row 32 fixed in the connecting row groove on the rear end connecting row frame plate 41. The insulating cover plate 34 is connected to the rear end connecting row frame plate 41 in a clamping mode to insulate and cover the serial connecting row 32 on the rear end connecting row frame plate, the narrow side plate 35 is tightly attached to the insulating cover plate 34, and the rear end plate 42 is tightly attached to the narrow side plate 35. The narrow side plate 35 and the rear end plate 42 are both plate structures. A narrow side plate 35 and a rear end plate 42 are fixedly connected with the rear end of the port frame 11; specifically, the narrow side plate 35 and the rear end plate 42 are plate structures made of aluminum, the narrow side plate 35 is welded to the rear end of the port frame 11 made of the same material through the peripheral side face 351, and the structural strength of the battery accommodating cavity 17 in the port frame 11 is improved through the narrow side plate 35. The two rear end plate sides 423 of the rear end plate 42 are caught between the side plate end extensions 821 on the rear ends of the two side plates 82, and are welded to the side plate end extensions 821. The rear end plate 42 is a plate body with a certain thickness, and is hollowed out along the plate body direction. The top end of the rear end plate 42 is provided with an interface frame 53. The interface frame 53 includes an interface frame deck 531 and an interface frame receptacle 532. The interface shelf mount 532 is disposed below the interface shelf deck 531. The interface shelf deck 531 is disposed on the back end plate 42 and secured to the back end plate 42 by inserting the interface shelf receptacles 421 on the back end plate 42 through the interface shelf receptacles 532. The collection interface 52 is provided on an interface rack deck 531 of the interface rack 53.
As shown in fig. 9, the battery 21 is packaged in an insulating manner, and battery protectors 23 are disposed at two ends of the battery 21, so that the battery 21 is supported by the battery protectors 23, the battery 21 is insulated and isolated from the four panel bodies of the throat plate frame 11, and a heat-conducting insulating structural adhesive can be filled in the isolated gap. The bottom of the battery 21 is provided with a heat conducting layer 25, the heat conducting layer 25 is a plate made of aluminum or copper, and the bottom of each battery 21 of the battery array 102 is arranged on the heat conducting layer 25 through a heat conducting and insulating structural adhesive. Thus, when the temperature of the battery 21 is too high, heat can be dissipated through the heat conducting insulating structural adhesive and the heat conducting layer 25; when the temperature of the battery 21 is too low, the battery module can be heated, and the heated heat is transferred to the battery 21 through the heat conducting and insulating structural adhesive and the heat conducting layer 25. Those skilled in the art will understand that the heat conductive layer 25 as a heat conductive function may also be directly bonded with a heat conductive and insulating structural adhesive.
As shown in fig. 10, a cell collecting plate 22 is provided on the end face of the negative electrode terminal 21N of the battery 21. The cell collecting plate 22 includes a back plate 221, a voltage detecting terminal 222, a temperature detecting terminal 223, a temperature sensor 224, and a voltage heat-conducting pole fitting plate 225, where the voltage heat-conducting pole fitting plate 225 is a sheet made of nickel and is welded to the end face of the pole 211. The voltage detection terminal 222 is electrically connected to the voltage conductive pole attachment plate 225. The temperature detection terminal 223 is electrically connected to the temperature sensor 224. The voltage conducting pole fitting plate 225 is electrically connected to the temperature sensor 224.
As shown in fig. 11 and 12, the battery module is further provided with a collection and collection assembly 105, specifically, a voltage detection terminal 222 and a temperature detection terminal 223 on the single cell collection plate 22 of each battery 21 in the battery array 102 are collected to a unified battery module interface. The collection and collection assembly 105 includes a collection and collection rack 51 and a collection and support rack 18. The collection and collection frame 51 is disposed on the top surface of the battery array 102. The collection support frame 18 is disposed between the collection frame 51 and the top plate 81, and is a hollow plate structure for providing physical and insulating support for the collection frame 51. The collection and collection rack 51 includes a lateral support bar 511, a plurality of longitudinal support bars 512, a collection port 52, and a plurality of terminal fittings 513. Each of the longitudinal support bars 512 is disposed along the front and rear end directions of the battery module, connected to and perpendicular to the lateral support bars 511. The longitudinal support bars 512 are disposed in the front and rear end direction of the battery module, that is, the longitudinal support bars 512 are disposed in the front and rear end direction F of the battery module. The lateral support bars 511 cross the cells 21 at the end of each battery pack 200. The collection port 52 is connected to the lateral support bars 511. Terminal fittings 513 are provided on the lateral and longitudinal support bars 511 and 512. The voltage detection terminal 222 and the temperature detection terminal 223 of the cell collection plate 22 on the battery 21 are respectively connected to one terminal connector 513 by insertion. Each terminal fitting 513 is electrically connected to the collection interface 52.
Further, the battery array 102 is provided with an explosion-proof valve 212 at the positive terminal 21P of the top surface of each battery 21. A plurality of explosion holes 84 are formed in a top plate 81 of the port frame 11. The position of the burst openings 84 corresponds to the position of the burst valve 212 of each cell 21 such that the burst valve 212 on each cell 21 is directly opposite its corresponding burst opening 84. Therefore, when the battery 21 is overcharged, overdischarged or the like, or is overheated to cause gas generation or gas thermal expansion inside the battery 21 to burst the explosion-proof valve 212, the heat is collected through the hollow hole of the support frame 18 and then released through the explosion opening 84.
Further, a silicone frame is provided between the adjacent cells 21 of the battery pack 200. The silica gel frame is bonded with the side surface of the battery 21 through structural adhesive, and plays a role in buffering between the adjacent batteries 21. The transverse supporting bar 511 of the collecting and collecting frame 51 is provided with a corresponding buffer convex bridge 514 at a corresponding position above the silica gel frame. The buffer bridges 514 are upward protrusions on the lateral support bars 511.
Further, a fastening mechanism is arranged between the terminal connector 513 and the voltage detection terminal 222 or the temperature detection terminal 223, and the locking of the insertion is realized through the fastening mechanism. Fig. 13 shows an example of insertion of the terminal fitting 513 into the voltage detection terminal 222 and the temperature detection terminal 223. As shown in fig. 13, the voltage detection terminal 222 and the temperature detection terminal 223 include a terminal case 61 and a connector pin 62 provided inside the terminal case 61. Wherein, a contact pin 62 is arranged in the terminal shell 61 of the voltage detection terminal 222; two separated connector pins 62 are provided in the terminal case 61 of the temperature detection terminal 223, see the connector pins shown by the broken lines in fig. 13. The terminal case 61 is square and is provided with a connector accommodating chamber 63 opened at the top end. The contact pins 62 are received in the plug receiving cavities 63 and are arranged vertically. The side panel of the terminal case 61 is provided with a snap opening 64. The terminal fitting 513 includes a plug main body 91 and a spring plate 92. The plug main body 91 has a square structure. There are two spring plates 92. The two spring plates 92 are respectively disposed on the two side surfaces of the plug main body 91 facing back. The spring plate 92 is provided with a snap projection 93. When the plug main body 91 of the terminal fitting 513 is inserted into the plug accommodating chamber 62, the spring plate 92 is contracted inward, and the snap projections 93 on the spring plate 92 are snapped into the snap openings 64 depending on the elasticity of the spring plate 92 itself. The snap mechanism consists of a snap opening 64, a spring plate 92 and a snap projection 93.
Further, front end mounting holes 362 and rear end mounting holes 422 are provided on the respective sides of the front end plate 36 and the rear end plate 42, respectively. Therefore, the battery module can be fixedly connected with the battery pack box body by arranging bolts through the front end mounting holes 362 and the rear end mounting holes 422.
Claims (10)
1. A battery module based on battery grouping and inter-group buffer connection comprises a module frame and a battery array accommodated in the module frame; wherein the battery array comprises two battery packs; the battery pack is composed of an even number of battery arrays; the battery is in a strip square structure, and the polar columns of two electrodes of the battery are respectively positioned at two ends of the battery; the pole of the battery is positioned at the end part of the battery pack; and the two battery packs are in pole butt joint through two U-shaped buffer connecting rows arranged at the inner side ends of the battery packs.
2. The battery module based on battery grouping and inter-pack buffer connection of claim 1, wherein: and an insulating layer is arranged on the inner side of the U-shaped buffer connecting row.
3. The battery module based on battery grouping and inter-group buffer connection according to claim 2, wherein: the insulating layer is an insulating buffer pad arranged on the inner side of the U-shaped buffer connecting row, or an insulating coating coated on the inner side surface of the U-shaped buffer connecting row.
4. The battery module based on battery grouping and inter-pack buffer connection of claim 1, wherein: the middle-end insulation assembly is arranged between the adjacent battery packs, a avoiding hole for avoiding the U-shaped buffer connecting row is formed in the middle-end insulation assembly, and the adjacent battery packs are insulated through the middle-end insulation assembly.
5. The battery module based on battery grouping and inter-pack buffer connection according to claim 4, wherein: the middle-end insulation assembly comprises a middle-end connecting row frame plate and a connecting row insulation cover plate, the middle-end connecting row frame plate is tightly attached to the opposite end faces of the adjacent battery packs respectively, serial connecting rows are arranged in connecting row grooves of the middle-end connecting row frame plate, and the serial connecting rows are connected with the terminal posts of the end electrodes of the battery packs; the connecting row insulating cover plate is fixedly connected to one of the middle-end connecting row frame plates to separate and insulate the series connecting rows on the adjacent battery packs.
6. The battery module based on battery grouping and inter-pack buffer connection according to claim 1, wherein the U-shaped buffer connection row is disposed between the poles of the outermost batteries.
7. The battery module based on battery grouping and inter-pack buffer connection according to claim 6, wherein the U-shaped ports of the U-shaped buffer connection rows face outward.
8. The battery module based on battery grouping and inter-pack buffer connection according to claim 1, wherein the batteries of one battery pack are connected in series with the batteries of the other battery pack through the U-shaped buffer connection bank, and the outer end of the other battery pack is connected with the output electrode of the battery module.
9. The battery module based on battery grouping and inter-pack buffer connection according to claim 8, wherein the two poles to which the output electrodes of the battery module are connected are respectively located on the two adjacent batteries at the innermost side of the battery pack.
10. The battery module based on battery grouping and inter-pack buffer connection according to claim 8, wherein the two poles to which the output electrodes of the battery module are connected are respectively located on the two adjacent batteries on the outermost side of the battery pack.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576923.5U CN213752852U (en) | 2020-11-10 | 2020-11-10 | Battery module based on battery is divided into groups and buffer between groups is connected |
| PCT/CN2021/092259 WO2022100035A1 (en) | 2020-11-10 | 2021-05-08 | Battery module based on battery grouping and inter-group cushioning connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576923.5U CN213752852U (en) | 2020-11-10 | 2020-11-10 | Battery module based on battery is divided into groups and buffer between groups is connected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213752852U true CN213752852U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022576923.5U Active CN213752852U (en) | 2020-11-10 | 2020-11-10 | Battery module based on battery is divided into groups and buffer between groups is connected |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN213752852U (en) |
| WO (1) | WO2022100035A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116826219A (en) * | 2023-08-28 | 2023-09-29 | 宁德时代新能源科技股份有限公司 | Battery, power utilization device and method for assembling battery |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4419765B2 (en) * | 2004-09-13 | 2010-02-24 | 三菱自動車工業株式会社 | Battery pack device |
| CN201146250Y (en) * | 2007-12-25 | 2008-11-05 | 比亚迪股份有限公司 | Piece for connecting battery module |
| CN201478368U (en) * | 2009-02-27 | 2010-05-19 | 比亚迪股份有限公司 | Battery module connecting piece and battery system using same |
| CN105390652B (en) * | 2015-05-08 | 2017-05-03 | 比亚迪股份有限公司 | Connector of power battery, power battery module, power battery pack, and automobile |
| CN208819967U (en) * | 2018-09-14 | 2019-05-03 | 宁德时代新能源科技股份有限公司 | Battery modules |
-
2020
- 2020-11-10 CN CN202022576923.5U patent/CN213752852U/en active Active
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| WO2022100035A1 (en) | 2022-05-19 |
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Effective date of registration: 20220124 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: No.15, Huashang Road, Airport Economic Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Jiangsu Tafel Power System Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |