CN113675538A - Busbar support and battery module with same - Google Patents
Busbar support and battery module with same Download PDFInfo
- Publication number
- CN113675538A CN113675538A CN202110952735.4A CN202110952735A CN113675538A CN 113675538 A CN113675538 A CN 113675538A CN 202110952735 A CN202110952735 A CN 202110952735A CN 113675538 A CN113675538 A CN 113675538A
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- China
- Prior art keywords
- main frame
- frame body
- bus bar
- busbar
- baffle
- Prior art date
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
- H01M50/258—Modular batteries; Casings provided with means for assembling
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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
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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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
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
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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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
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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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a bus bar support and a battery pack with the same, wherein the bus bar support comprises: a main frame body and a protection plate for fixing the bus bar; the bus bar support comprises a bus bar support body, wherein the bus bar support body is provided with a plurality of bus bars, the bus bars are arranged on the bus bar support body, the bus bars are arranged on the bus bars, the bus bars are arranged on the main frame body, the bus bars are arranged on the bus bars, and the bus bars are arranged on the bus bars.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a bus bar support and a battery module with the same.
Background
In the related art, in order to increase the endurance mileage of the electric vehicle at the present stage, many new technical schemes are adopted in the industry to increase the energy density of the power battery PACK, such as a CTP scheme, a blade battery scheme, and the like, and the integration efficiency of the power battery PACK is increased by directly applying the battery cell to the PACK (battery PACK), but new problems are also brought; the power battery pack is used as a high-voltage energy storage device of the electric automobile, and the electrical insulation protection is related to the safety and reliability of the power battery pack and even the electric automobile, so the protection of the bus bar between the battery cores is very important.
At present, the installation protection of the busbar in the blade battery scheme still refers to the mode of a traditional module, the busbar is fixed by adopting a busbar support, and a module upper cover made of PC (Polycarbonate for short ) is installed after welding for shielding protection. This technical scheme is with high costs and assembly operation is loaded down with trivial details.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a bus bar support, which reduces the cost, reduces the operation procedures and improves the production efficiency by arranging a protection plate on a main frame body to replace an insulation sheet at the end part of a module.
The invention also provides a battery module with the bus bar support.
A bus bar bracket according to a first aspect of the invention, the bracket comprising: a main frame body for fixing the bus bar; the protective plate is arranged on one side of the main frame body in the thickness direction and is connected with the main frame body, the protective plate comprises a baffle portion, the baffle portion and the main frame body are spaced in the thickness direction of the main frame body, and the busbar is suitable for being arranged between the main frame body and the baffle portion.
According to the bus bar support, the protection plate is arranged on the main frame body to replace an insulation sheet at the end part of the existing module, so that the cost is reduced, the operation procedures are reduced, and the production efficiency is improved.
In some embodiments, the protection plate further comprises a connecting portion, one end of the connecting portion is connected with the main frame body, the other end of the connecting portion extends away from the main frame body along the thickness direction of the main frame body, the baffle portion is connected to the other end of the connecting portion and is parallel to the main frame body, an accommodating space is defined by the connecting portion, the baffle portion and the main frame body in a matched mode, and the bus bar is located in the accommodating space.
In some embodiments, a side surface of the connecting portion located in the accommodating space is formed with a protruding support boss, and the bus bar is adapted to be supported on the support boss.
In some embodiments, a welding portion for connecting with a pole of a battery module is formed on the bus bar, and an avoiding hole penetrating in the thickness direction is formed on the baffle portion, and the avoiding hole is opposite to the welding portion in the thickness direction of the baffle portion.
In some embodiments, the baffle portion is spaced apart from the bus bar by a predetermined distance in a thickness direction of the baffle portion, the predetermined distance being 1mm to 2 mm.
In some embodiments, the baffle portion includes a plurality of baffle portions, and the plurality of baffle portions are provided at intervals in a longitudinal direction of the main frame body.
In some embodiments, the main frame body is integrally formed with the protective plate.
In some embodiments, the bus bar is snap-fit or adhesively attached to the main frame.
In some embodiments, the primary frame comprises: the first rod parts comprise a plurality of first rod parts, and the plurality of first rod parts extend along the length direction of the main frame body and are arranged in parallel at intervals in the width direction of the main frame body; the second rod part comprises a plurality of second rod parts, the second rod parts are connected with the first rod parts and extend along the width direction of the main frame body and are arranged in parallel and at intervals in the length direction of the main frame body, the protection plate is connected with one of the first rod parts and extends towards the other first rod part adjacent to the one first rod part along the width direction of the main frame body, and the busbar is fixed on the second rod parts.
A battery module according to a second aspect of the invention includes: the battery comprises a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, wherein the battery cells are arranged side by side, and each battery cell is provided with a pole; the busbar bracket is arranged on the plurality of battery cells; the busbar is arranged between the main frame body and the baffle part of the busbar support, and the busbar is fixed on the main frame body and electrically connected with the pole.
According to the battery module of the present invention, by providing the bus bar holder of the first aspect, the overall performance of the battery module is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a battery module according to an embodiment of the present invention;
FIG. 2 is a schematic view of the bus bar shown in FIG. 1 mated with a bus bar support;
FIG. 3 is a right side view of the bus bar shown in FIG. 2 mated with a bus bar support;
fig. 4 is a schematic view of the bus bar holder shown in fig. 1.
Reference numerals:
a battery module 100;
an electric core 10;
a pole 11;
a bus bar 20;
a welding portion 21;
a bus bar holder 30;
a main frame body 31;
a first rod portion 311, a second rod portion 312, a grating hole 313;
a shielding plate 32;
the baffle portion 321, the avoiding hole 3211, the connecting portion 322, and the supporting boss 3221.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
First, a brief description will be made of a battery module 100 according to an embodiment of a second aspect of the present invention with reference to fig. 1, the battery module 100 including: a plurality of cells 10, a busbar 20 and a busbar support 30 according to an embodiment of the first aspect of the invention.
As shown in fig. 1, a plurality of battery cells 10 are arranged side by side, each battery cell 10 is provided with a pole 11, a bus bar support 30 is provided at a corresponding position on the pole 11 of the plurality of battery cells 10, and a bus bar 20 is fixed on the bus bar support 30 and electrically connected with the pole 11.
A busbar holder 30 according to an embodiment of the first aspect of the invention is described below with reference to fig. 1 to 4.
As shown in fig. 4, a bus bar holder 30 according to an embodiment of the first aspect of the present invention includes: a main frame body 31 and a shielding plate 32.
Specifically, as shown in fig. 2, the main frame 31 is used to fix the bus bar 20, fix the bus bar 20 at a position corresponding to the pole 11 of the battery cell 10, and further facilitate electrically connecting the bus bar 20 with the pole 11 of the battery cell 10, where the form of electrical connection may adopt a welding method, which may ensure electrical signal transmission between the bus bar 20 and the pole 11 of the battery cell 10, connect a plurality of battery cells 10 in series, and also fix the bus bar 20 and the pole 11 on the battery cell 10 together.
The protection plate 32 is disposed on one side of the main frame 31 in the thickness direction (for example, the up-down direction shown in fig. 4) and connected to the main frame 31, the protection plate 32 may include a baffle portion 321, the baffle portion 321 is spaced apart from the main frame 31 in the thickness direction of the main frame 31, the busbar 20 is adapted to be disposed between the main frame 31 and the baffle portion 321, wherein the main frame 31 is to be fixed on the electric cell 10, that is, the main frame 31 is located on one side of the busbar 20 close to the electric cell 10, and the baffle portion 321 is located on one side of the busbar 20 away from the electric cell 10, so that the baffle portion 321 avoids direct contact between the busbar 20 and the battery module casing, and replaces an insulating sheet at the end of the existing module, thereby reducing the cost and simplifying the assembly process.
As shown in fig. 2, the main frame 31 and the protection plates 32 are both insulating plastic parts, the main frame 31 is fixed at corresponding positions on the plurality of battery cells 10 arranged in order, the protection plates 32 are disposed on the main frame 31, the protection plates 32 are connected to the main frame 31 at a side departing from the battery cells 10 in the thickness direction, the baffle portions 321 of the protection plates 32 are spaced apart from the main frame 31 in the thickness direction of the main frame 31, the bus bar 20 is located between the main frame 31 and the baffle portions 321, and is fixed on the main frame body 31, so that the bus bar 20 can be fixed at the corresponding position of the pole 11 of the battery cell 10, thereby facilitating the electrical connection between the bus bar 20 and the terminal 11 of the battery cell 10, the baffle portion 321 is provided to prevent the housing of the battery module 100 from directly contacting the bus bar 20, an effective insulation shield is formed between the bus bars 20 and the outer case of the battery module 100, replacing the conventional insulation sheet at the end of the module.
According to the bus bar support 30 of the embodiment of the invention, the protective plate 32 is arranged on the main frame body 31 to replace an insulating sheet at the end part of the existing module, so that the cost is reduced, the operation procedures are reduced, and the production efficiency is improved.
In an embodiment of the present invention, as shown in fig. 3, the protection plate 32 further includes a connection portion 322, one end of the connection portion 322 is connected to the main frame body 31, the other end of the connection portion 322 extends away from the main frame body 31 in a thickness direction of the main frame body 31, the baffle portion 321 is connected to the other end of the connection portion 322 and is disposed parallel to the main frame body 31, the connection portion 322, the baffle portion 321 and the main frame body 31 cooperate with each other to define an accommodation space, and the bus bar 20 is located in the accommodation space, so that the baffle portion 321 is connected to the main frame body 31 through the connection portion 322, and the number of components in the battery module 100 is reduced.
The thickness of the baffle portion is 1mm-1.5mm, so that the baffle portion 321 can still have certain toughness under the condition of having certain strength.
Further, as shown in fig. 3, one end of the baffle portion 321 is connected to the connecting portion 322, and the other end is a free end, which may have a certain amount of movement and elasticity, so that, on the one hand, the busbar 20 is conveniently assembled to the main frame body 31 preliminarily, which reduces difficulty and workload during assembly, and on the other hand, after the assembly of the battery module 100 is completed, the free end of the baffle portion 321 has a certain elasticity, which may ensure that the housing of the battery module 100 is deformed, when the baffle portion 321 is extruded, the baffle portion 321 may not be directly damaged, thereby prolonging the service life of the baffle portion 321, and better protecting the busbar 20.
In an embodiment of the invention, as shown in fig. 3, a convex supporting boss 3221 is formed on a surface of one side (e.g., the front side shown in fig. 3) of the connecting portion 322 located in the accommodating space, and the bus bar 20 is adapted to be supported on the supporting boss 3221, so that the position fixation of the bus bar 20 during the welding process is further ensured, which is further beneficial to improving the welding precision between the bus bar 20 and the pole 11 of the battery cell 10, and reducing the fraction defective during the assembling process.
For example, as shown in fig. 3, the bus bar 20 is located in the accommodating space, the main frame body 31 is connected to the bus bar 20 to limit the movement of the bus bar 20 in the thickness direction of the main frame body 31, a convex supporting boss 3221 is formed on one side surface of the connecting portion 322 located in the accommodating space, the front surface of the supporting boss 3221 is set to be flat, and the supporting boss 3221 is adapted to abut against the bus bar 20, thereby further ensuring the fixing of the position of the bus bar 20 from the front to the rear.
In an embodiment of the present invention, as shown in fig. 2, a welding portion 21 for connecting with the pole 11 of the battery is formed on the bus bar 20, an avoiding hole 3211 penetrating in a thickness direction (for example, in a vertical direction shown in fig. 2) is formed on the blocking plate portion 321, and the avoiding hole 3211 is opposite to the welding portion 21 in the thickness direction of the blocking plate portion 321, that is, a projection of the welding portion 21 is completely located inside a projection of the avoiding hole in a projection plane perpendicular to a central axis of the avoiding hole 3211. The size of avoiding hole 3211 can satisfy the space requirement of welding between busbar 20 and utmost point post 11, and at the welded in-process, directly weld busbar 20 through avoiding hole 3211 can, like this, baffle portion 321 is under the circumstances of guaranteeing busbar 20 and battery module 100 shell insulation, can not influence the welding of busbar 20 and utmost point post 11 simultaneously.
Further, the welding part 21 is arranged, so that an assembling worker can find out the welding position accurately in the welding process, and the welding speed and the welding precision are improved.
In an embodiment of the present invention, as shown in fig. 3, if the baffle portion 321 is spaced apart from the bus bar 20 by a predetermined distance, which is 1mm-2mm, in a thickness direction of the baffle portion 321, that is, if the baffle portion 321 is spaced apart from the bus bar 20 by a predetermined distance a (for example, a shown in fig. 3), a value of a is in a range of 1mm-2mm, wherein the predetermined distance can ensure that the baffle portion 321 has a certain amount of movement in the thickness direction of the baffle portion 321, when the baffle portion 321 is pressed by the outside, a pressure is not directly applied to the bus bar to damage the bus bar 20, and meanwhile, since the baffle portion 321 is an insulating plastic material and has a certain elasticity, the baffle portion 321 can apply a reaction force to the outside to resist the pressing by the outside after being pressed by the outside, thereby better protecting the bus bar 20 from the pressing by the outside, and simultaneously, the insulation effect is better ensured.
It should be noted that, in the thickness direction of the baffle portion 321, if the predetermined distance between the baffle portion 321 and the bus bar 20 is less than 1mm, it is not favorable for the bus bar 20 to be assembled into the accommodating space during the assembly process, and the assembly workload may be increased, and if the predetermined distance between the baffle portion 321 and the bus bar 20 is greater than 2mm, when the baffle portion 321 is pressed too much by the outside, the movable distance of the baffle portion 321 may exceed its bearing range, and the baffle portion 321 may be damaged.
Alternatively, in the thickness direction of the baffle portion 321, the predetermined distance in which the baffle portion 321 is spaced from the bus bar 20 may be set to be 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, or 2.0mm, so that, on one hand, while the baffle portion 321 is protected from the bus bar 20, the baffle portion 321 itself is not easily damaged, the service life of the baffle portion 321 is prolonged, and on the other hand, a certain distance is left between the baffle portion 321 and the bus bar 20, which is beneficial to reducing the difficulty of assembly and the workload of assembly.
Preferably, in a specific embodiment, the predetermined distance between the baffle portion 321 and the bus bar 20 in the thickness direction of the baffle portion 321 is set to be 1.6mm, so that certain assembly errors are allowed, the assembly workload is reduced, the bus bar 20 is protected by the baffle portion 321, and damage of the baffle portion 321 caused by an excessive moving distance in the thickness direction of the baffle portion 321 is avoided.
In an embodiment of the present invention, as shown in fig. 4, the baffle portion 321 includes a plurality of baffle portions 321, and the plurality of baffle portions 321 are arranged at intervals in a length direction (for example, a left-right direction in fig. 4) of the main frame 31, wherein the number of the baffle portions 321 is determined by the number of the busbars 20, each of the busbars 20 has two welding portions 21, and each of the welding portions 21 corresponds to one of the baffle portions 321, so that the number of the baffle portions 321 is twice the number of the busbars 20, for example, as shown in fig. 1, the number of the busbars 20 is 5, and the number of the baffle portions 321 is 10, so that the busbars 20 can be completely insulated from the outside, and further, the insulating sheets at the ends of the module in the prior art can be replaced.
In one embodiment of the present invention, as shown in fig. 4, the main frame body 31 is integrally formed with the protection plate 32, so that the number of parts in the battery module 100 can be reduced, the number of assembly steps can be reduced, and the cost can be reduced.
For example, as shown in fig. 2, the main frame body 31 and the protection plate 32 are integrally formed, and in the assembling process, only the integrally formed bus bar support 30 needs to be fixed at a corresponding position on the battery cell 10, then the bus bar 20 is fixed in the bus bar support 30, and the bus bar 20 and the pole 11 of the battery cell 10 are welded, so that the steps are simple, the assembling workload is reduced, and the production efficiency is improved.
In one embodiment of the present invention, as shown in fig. 2, the bus bar 20 is snapped or adhesively attached to the main frame 31, thereby securing the bus bar 20 to the main frame 31 for easy welding.
Further, as shown in fig. 2, the bus bar 20 is bonded to the main frame body 31 in a manner that ensures that the bus bar 20 is fixed to the main frame body 31, and the bonding cost is relatively low, which is beneficial to reducing the cost.
In one embodiment of the present invention, as shown in fig. 4, the main frame body 31 may include a first rod part 311 and a second rod part 312. Specifically, the first rod portions 311 include a plurality of first rod portions 311, the plurality of first rod portions 311 extend in the length direction of the main frame body 31 and are arranged in parallel at intervals in the width direction (for example, the front-back direction shown in fig. 1) of the main frame body 31, the length of the first rod portions 311 is determined by the thicknesses of the plurality of battery cells 10 arranged in alignment, and the plurality of first rod portions are arranged in parallel at intervals in the width direction of the main frame body 31, which is beneficial to increase of reference objects for positioning the main frame body 31 in the width direction, so that the main frame body 31 is more accurately positioned in the width direction.
The protection plate 32 is connected to one of the first rod portions 311, and extends toward another first rod portion 311 adjacent to the one first rod portion 311 along the width direction of the main frame 31, and the bus bar 20 is fixed to the second rod portion 312.
For example, as shown in fig. 4, the main frame 31 includes 3 first rod portions 311 and 11 second rod portions 312, 3 first rod portions 311 extending in the left-right direction of the main frame 31 and arranged in parallel at intervals in the front-back direction of the main frame 31, the first rod portion 311 located at the middle position in the front-back direction of the main frame 31 is connected to the protection plate 32, the protection plate 32 extends in the back-to-front direction of the main frame 31, the first rod portion 311 located at the rearmost side of the main frame 31 is arranged to overlap with the edge of the cell 10 module for positioning convenience, 11 second rod portions 312 extending in the front-back direction of the main frame 31 and arranged in parallel at intervals in the left-right direction of the main frame 31, the second rod portions 312 and the grid formed by the two first rod portions 311 located in front define 10 grid holes 313, the poles 11 of the cell 10 are located in the grid holes 313, the busbars 20 are fixed on the second rod portions 312 of every other second rod portions 312 from left to right, the first and second rod parts 312 do not fix the busbars 20, so that the main frame 31 is precisely fixed at the corresponding positions of the battery cell 10 module, and the protection plate 32 replaces the insulating sheet at the end of the existing module to isolate all the busbars 20 from the outside.
The battery module 100 according to the embodiment of the second aspect of the present invention may include the bus bar support 30 according to the embodiment of the first aspect of the present invention, the plurality of battery cells 10, and the bus bar 20.
Specifically, as shown in fig. 1, a plurality of battery cells 10 are arranged side by side, each battery cell 10 is provided with a pole 11, a busbar support 30 is provided on the plurality of battery cells 10, a busbar 20 is provided between a main frame body 31 and a baffle portion 321 of the busbar support 30, and the busbar 20 is fixed to the main frame body 31 and connected to the pole 11.
According to the battery module 100 of the embodiment of the present invention, by providing the bus bar holders 30 of the first aspect embodiment described above, the overall performance of the battery module 100 is improved.
A bus bar holder 30 according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.
Referring to fig. 2 and 4, the bus bar holder 30 according to an embodiment of the present invention may include: a shield plate 32 and a main frame body 31 for fixing the bus bar 20, the shield plate 32 being provided on an upper side of the main frame body 31 and coupled to the main frame body 31.
The protection plate 32 may include a baffle portion 321 and a connection portion 322, the baffle portion 321 is spaced apart from the main frame body 31 in the up-down direction of the main frame body 31, one end of the connection portion 322 is connected to the main frame body 31 and the other end extends away from the main frame body 31 in the up-down direction of the main frame body 31, the baffle portion 321 is connected to the other end of the connection portion 322 and is substantially parallel to the main frame body 31, the connection portion 322, the baffle portion 321 and the main frame body 31 cooperate to define an accommodation space, and the busbar 20 is located in the accommodation space.
A support boss 3221 protruding is formed at a front side surface of the connection part 322, and the bus bar 20 is adapted to be supported on the support boss 3221.
The baffle portion 321 is provided with a relief hole 3211 corresponding to the welding portion 21 of the busbar 20, the relief hole 3211 faces the welding portion 21 in the vertical direction of the baffle, the baffle portion 321 and the busbar 20 are spaced apart from each other by a predetermined distance of 1-2mm in the vertical direction, the baffle portion 321 includes a plurality of baffle portions 321 arranged at intervals in the horizontal direction of the main frame body 31.
The main frame body 31 may include: 3 first lever parts 311 and 11 second lever parts 312.
The first rod portion 311 extends in the left-right direction of the main frame body 31 and is provided in parallel with the main frame body 31 at an interval in the front-rear direction; the second rod part 312 is connected with the first rod part 311, the second rod part 312 extends along the front-back direction of the main frame body 31 and is arranged in parallel and at intervals in the left-right direction of the main frame body 31, the protection plate 32 is connected with the first rod part 311 positioned in the middle of the front-back direction of the main frame body 31 and extends towards the foremost first rod part 311 along the front-back direction of the main frame body 31, 10 grid holes 313 are defined by the second rod part 312 and a grid formed by the two first rod parts 311 positioned in the front, the pole 11 of the battery cell 10 is positioned in the grid holes 313, the busbar 20 is fixed on the second rod part 312 of every other second rod part 312 from left to right, and the busbar 20 is not fixed by the first second rod part 312.
As shown in fig. 1, during the assembly process, the bus bar support 30 only needs to be fixed at a corresponding position on the module of the battery cell 10, then the bus bar 20 is fixed on the corresponding second rod portion 312 of the main frame 31, after the positions of the bus bar support 30 and the bus bar 20 are determined, the bus bar 20 and the pole 11 of the battery cell 10 are welded through the avoiding hole 3211 on the baffle portion 321, and the bus bar 20 is fixed on the corresponding pole 11, thereby completing the assembly process.
According to the bus bar support 30 of the embodiment of the invention, the protective plate 32 is arranged on the main frame body 31 to replace an insulating sheet at the end part of the existing module, so that the cost is reduced, the operation procedures are reduced, and the production efficiency is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A bus bar support, comprising:
a main frame body for fixing the bus bar;
the protective plate is arranged on one side of the main frame body in the thickness direction and is connected with the main frame body, the protective plate comprises a baffle portion, the baffle portion and the main frame body are spaced in the thickness direction of the main frame body, and the busbar is suitable for being arranged between the main frame body and the baffle portion.
2. The bus bar support according to claim 1, wherein the protection plate further comprises a connecting portion, one end of the connecting portion is connected to the main frame body and the other end extends away from the main frame body in a thickness direction of the main frame body, the baffle portion is connected to the other end of the connecting portion and is disposed parallel to the main frame body, the connecting portion, the baffle portion and the main frame body cooperate to define an accommodating space, and the bus bar is located in the accommodating space.
3. The bus bar holder according to claim 2, wherein a side surface of the connecting portion within the accommodating space is formed with a protruding support boss, and the bus bar is adapted to be supported on the support boss.
4. The busbar support according to claim 1, wherein a welding portion for connecting to a pole of a battery is formed on the busbar, and an avoiding hole penetrating in a thickness direction is formed on the baffle portion, and the avoiding hole faces the welding portion in the thickness direction of the baffle portion.
5. The busbar holder according to claim 1, wherein the baffle portion is spaced from the busbar by a predetermined distance in a thickness direction of the baffle portion, the predetermined distance being 1mm to 2 mm.
6. The busbar support according to any one of claims 1 to 5, wherein the baffle portion includes a plurality of baffle portions, and the plurality of baffle portions are provided at intervals in a longitudinal direction of the main frame body.
7. The bus bar support according to any one of claims 1 to 5, wherein the main frame body is integrally formed with the shielding plate.
8. A bus bar support according to any of claims 1 to 5, wherein the bus bar is snap-fitted or adhesively attached to the main frame.
9. The busbar support according to any of claims 1 to 5, wherein the main frame body comprises:
the first rod parts comprise a plurality of first rod parts, and the plurality of first rod parts extend along the length direction of the main frame body and are arranged in parallel at intervals in the width direction of the main frame body;
the second rod parts comprise a plurality of second rod parts which are connected with the first rod parts and extend along the width direction of the main frame body and are arranged in parallel and at intervals in the length direction of the main frame body,
the protective plate is connected with one of the first rod parts and extends towards the other first rod part adjacent to the first rod part along the width direction of the main frame body, and the bus bar is fixed on the second rod part.
10. A battery module, comprising:
the battery comprises a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, wherein the battery cells are arranged side by side, and each battery cell is provided with a pole;
the buss bar holder of any of claims 1-9, disposed on a plurality of the cells;
the busbar is arranged between the main frame body and the baffle part of the busbar support, and the busbar is fixed on the main frame body and electrically connected with the pole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952735.4A CN113675538B (en) | 2021-08-19 | 2021-08-19 | Busbar support and battery module with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952735.4A CN113675538B (en) | 2021-08-19 | 2021-08-19 | Busbar support and battery module with same |
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| CN113675538A true CN113675538A (en) | 2021-11-19 |
| CN113675538B CN113675538B (en) | 2023-07-21 |
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| WO2023138004A1 (en) * | 2022-01-19 | 2023-07-27 | 湖北亿纬动力有限公司 | Aluminum bar fixing support and battery pack |
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| CN113675538B (en) | 2023-07-21 |
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