CN114927818B - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
- Publication number
- CN114927818B CN114927818B CN202210527100.4A CN202210527100A CN114927818B CN 114927818 B CN114927818 B CN 114927818B CN 202210527100 A CN202210527100 A CN 202210527100A CN 114927818 B CN114927818 B CN 114927818B
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- Prior art keywords
- battery module
- battery
- main body
- busbar
- protruding
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Classifications
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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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
-
- 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
-
- 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
- H01M50/269—Mechanical means for varying the arrangement of batteries or cells for different uses, e.g. for changing the number of batteries or for switching between series and parallel wiring
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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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- 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)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery module and a battery pack, wherein the battery module comprises a shell and a plurality of single batteries, and a plastic bracket is arranged between every two adjacent single batteries; the plastic bracket comprises a first connecting part, a second connecting part and a third connecting part; adjacent single batteries are separated through the third connecting part, the middle part of the third connecting part is hollowed out to form a first avoiding area, and the expansion deformation of the single batteries is avoided through the first avoiding area. According to the battery module, the plastic bracket is used for replacing the original adhesive tape and plastic top cover between two adjacent single batteries, so that the installation procedure is reduced, and the cost is reduced; the plastic bracket has novel structure, has the functions of avoiding the bulge of the single battery, has the functions of binding wires and/or positioning and fixing the busbar and/or cooling air duct, meets the requirements of different lengths and serial-parallel numbers of the battery modules, has strong compatibility, and greatly reduces the production cost.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a battery module and a battery pack.
Background
The battery module is a main component of a battery pack of a new energy automobile, and in the prior art, referring to fig. 1 and 2, the battery module mainly comprises a shell; the plurality of battery cells are arranged in the shell and are sequentially arranged along the length direction of the shell; two adhesive tapes which are arranged at intervals are arranged between adjacent single batteries so as to avoid the bulge of the corresponding single battery through the interval space; the plastic top covers are multiple and are positioned at the tops of the single batteries, and the multiple plastic top covers are arranged in one-to-one correspondence with the multiple single batteries. In addition, the plastic top cover in the prior art can also be of an integrated structure;
The structure of the prior art needs two procedures of bonding two adhesive tapes and buckling a plastic top cover between the single batteries, which results in increased procedures and high production cost.
Accordingly, based on the above technical problems, there is a great need for developing a battery module and a battery pack.
Disclosure of Invention
The invention aims to provide a battery module and a battery pack, which are characterized in that a plastic bracket is arranged between adjacent single batteries, two adhesive tapes and a plastic top cover are directly replaced by the plastic bracket, so that the installation procedure is reduced, and the cost is reduced.
In order to achieve the above object, the present invention provides the following technical solutions:
The invention relates to a battery module, which comprises a shell and a plurality of single batteries arranged along the length direction of the shell, and is characterized in that a plastic bracket is arranged between adjacent single batteries;
The plastic bracket includes:
a first connecting part positioned at the top of the single battery;
The second connecting part is positioned at the bottom of the single battery; and
A third connecting portion connected to the first and second connecting portions and extending in a height direction of the unit cell;
Adjacent monomer battery passes through the separation of third connecting portion, just the middle part fretwork of third connecting portion forms into first area of dodging, the expansion deformation of monomer battery passes through first area of dodging dodges.
Further, the first connection part includes:
A first main body portion extending in a longitudinal direction of the unit cell; and
A first protruding portion that protrudes from a surface of the first main body portion at a position near an end portion in a longitudinal direction of the first main body portion;
The length of the first convex part is matched with the width of the first main body part;
One end of the joint of the first convex part and the first main body part is provided with a wire tying groove penetrating through the first convex part.
Further, the battery module further includes:
A plurality of bus bars electrically connected with the corresponding unit cells; and
The collecting wire harness extends along the length direction of the battery module and is provided with a plurality of collecting parts, and each collecting part is connected with the corresponding busbar;
The collection pencil arrange in on the first convex part, collection pencil pass through wear to locate tie in the wire casing with plastic support fixed connection.
Further, the first connecting part and the second connecting part are provided with channels;
The channel of the first connecting part is positioned in the middle; the two channels and the first avoidance area of the third connecting part form a branch air duct, and the branch air duct is used for heat dissipation and ventilation of the battery module.
Further, the device also comprises a bus;
the single battery is provided with two polar posts;
the first connecting part comprises a first main body part, and a second avoiding area for avoiding the pole is formed at the matching part of the first main body part and the pole;
the surface of the first main body part is protruded with a positioning part;
The busbar is provided with a positioning hole, and the busbar is positioned and installed through the positioning part and the positioning hole.
Further, the first connection part further includes:
second protruding portions located at both ends of the first main body portion in the longitudinal direction;
one end of the second protruding portion in the thickness direction of the single battery is provided with a first elastic portion, and the other end of the second protruding portion in the thickness direction of the single battery is provided with a mounting hole penetrating through the second protruding portion.
Further, the busbar installation space is reserved on the first main body part close to the second convex part;
The first main body part is provided with a second elastic part matched with the first elastic part, and two sides of the busbar in the width direction are respectively clamped and fixed through the first elastic part and the second elastic part.
The invention also discloses a battery pack, which comprises a box body and a battery module arranged in the box body, wherein the plastic bracket is arranged between adjacent single batteries in the battery module.
In the technical scheme, the battery module and the battery pack provided by the invention have the following beneficial effects:
According to the battery module, the plastic bracket is used for replacing the original adhesive tape and plastic top cover between two adjacent single batteries, so that the installation procedure is reduced, and the cost is reduced; the plastic bracket has novel structure, has the functions of avoiding the bulge of the single battery, and has the functions of binding wires and/or positioning and fixing the busbar and/or cooling air duct, and the requirements of different lengths and serial-parallel numbers of the battery modules are met, so that the compatibility is strong, and the production cost is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic view of a structure of a battery module according to the prior art;
fig. 2 is a partial enlarged view of a battery module according to the related art;
fig. 3 is a schematic structural diagram of a battery module according to an embodiment of the present invention when the battery module is a plurality of strings;
fig. 4 is a partial enlarged view of a battery module according to an embodiment of the present invention when the battery module is a plurality of strings;
fig. 5 is a schematic view of a first structure of a plastic bracket of a battery module according to an embodiment of the present invention;
fig. 6 is a schematic view of a second structure of a plastic bracket of a battery module according to an embodiment of the present invention;
fig. 7 is a schematic view of a third structure of a plastic bracket of a battery module according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a battery module according to an embodiment of the present invention when the battery module is multiple strings and two strings are combined;
fig. 9 is a partial enlarged view of a battery module according to an embodiment of the present invention when the battery module is multiple strings and two strings are combined;
Fig. 10 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.
Reference numerals illustrate:
1. A battery module; 2. a plastic bracket; 3. collecting a wire harness; 4. a tie; 5. a busbar; 6. a case; 7. an insulating cover plate;
101. a single battery;
201. a first connection portion; 202. a second connecting portion; 203. a third connecting portion; 204. a channel; 205. a second convex portion; 206. a first elastic portion; 207. a second elastic part; 208. a positioning part; 209. a second avoidance region;
20101. A first body portion; 20102. a first convex portion; 20103. wire slot;
20301. A first avoidance zone;
20501. A mounting hole;
20701. A connecting arm; 20702. a clamping part;
301. An acquisition unit;
501. positioning holes; 502. avoidance holes; 503. a notch;
601. an air inlet; 602. an air outlet; 603. an air inlet duct; 604. and an air outlet duct.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
See fig. 3-9;
the battery module 1 of the embodiment comprises a shell and a plurality of single batteries 101 arranged along the length direction of the shell, wherein a plastic bracket 2 is arranged between every two adjacent single batteries 101;
The plastic bracket 2 of the present embodiment includes:
A first connection part 201 located at the top of the unit cell 101;
A second connection part 202 located at the bottom of the unit cell 101; and
A third connection part 203 connected to the first connection part 201 and the second connection part 202 and extending in the height direction of the unit cell 101;
adjacent single batteries 101 are separated through the third connecting portion 203, the middle portion of the third connecting portion 203 is hollowed out to form a first avoiding area 20301, and expansion deformation of the single batteries 01 is avoided through the first avoiding area 20301.
Specifically, in order to overcome the defect that in the prior art, expansion deformation is avoided by separating adjacent single cells 101 in a manner of an adhesive tape, the plastic bracket 2 is disposed between two adjacent single cells 101, and the plastic bracket 2 disclosed in the embodiment mainly includes a first connection portion 201 located at an upper end, a second connection portion 202 located at a lower end, and a third connection portion 203 located in the middle, wherein the first connection portion 201 is located at an upper end of the single cell 101, the second connection portion 202 is located at a lower end of the single cell 101, and a limitation is formed on a height direction of the single cell 101 by the first connection portion 201 and the second connection portion 202, and at this time, the third connection portion 203 is located between two single cells 101 to form isolation for two adjacent single cells 101 by the third connection portion 203. Meanwhile, according to the expansion deformation of the single battery 101 in the operation of the battery module 1, a hollowed-out first avoiding area 20301 is processed at the middle position of the third connecting portion 203, and the size of the first avoiding area 0301 is larger than that of the expansion deformation portion of the single battery 101 so as to effectively avoid the expansion deformation of the single battery 101 through the hollowed-out first avoiding area 20301.
Referring to fig. 5, preferably, the first connection portion 201 of the present embodiment includes:
a first main body portion 20101 extending in the longitudinal direction of the single battery 01; and
A first protruding portion 20102 located at a position near the end in the longitudinal direction of the first body portion 20101 and protruding from the surface of the first body portion 20101;
the length of the first protruding portion 20102 matches the width of the first body portion 20101;
A wire tying groove 20103 penetrating the first protruding portion 20102 is formed at one end of the connection portion between the first protruding portion 20102 and the first body portion 20101.
Wherein, the battery module 1 further includes:
A plurality of bus bars 5, the bus bars 5 being electrically connected with the corresponding unit cells 101; and
An acquisition harness 3 extending in the longitudinal direction of the battery module 1, the acquisition harness 3 having a plurality of acquisition portions 301, each acquisition portion 301 being connected to a corresponding busbar 5;
The collection pencil 3 is arranged on the first convex part 20102, and the collection pencil 3 is fixedly connected with the plastic bracket 2 through a binding belt 4 penetrating through the wire tying groove 20103.
The present embodiment further defines the structure of the first connection part 201, and in order to be able to cooperate with the busbar 5 and the collection wire harness 3 of the battery module 1, the first connection part 201 of the present embodiment mainly includes a first main body part 20101 and a first protrusion 20102, the first protrusion 20102 is formed at a position of the first main body part 20101 near both ends in the length direction, and a wire tying groove 20103 penetrating the first protrusion 20102 is processed at a connection position of the first protrusion 20102 and the first main body part 20101 and at one end of the first protrusion 20102 in the length direction. Meanwhile, in this embodiment, a plurality of bus bars 5 are set according to the connection requirement of the unit battery 101, and the collection wire harness 3 extends along the length direction of the battery module 1 and is specifically located on the upper surface of the first protruding portion 20102, and since the first protruding portion 20102 is provided with the wire binding groove 20103, the collection wire harness 3 of this embodiment fixes the collection wire harness 3 on the plastic bracket 2 in a one-to-one matching manner through the plurality of wire binding bands 4 and the plurality of wire binding grooves 20103. By adopting the mode, the acquisition wire harness 3 can be firmly bound on the plastic bracket 2 through the binding belt 4, and the situation that the electric connection part is disconnected due to shaking of the acquisition wire harness 3 caused by vibration is avoided.
The collection harness 3 has a plurality of collection portions 301, and is connected with the bus bar 5 to collect information of the unit cells 101 by the collection portions 301.
Referring to fig. 6, preferably, in consideration of the heat dissipation problem of the battery module 1, the first connection part 201 and the second connection part 202 of the present embodiment are each provided with a channel 204;
The channel 204 of the first connection 201 is located in a middle position;
The two channels 204 and the first avoidance region 20301 of the third connection part 203 are formed as a branch air duct for heat dissipation and ventilation of the battery module 1.
The branched air duct formed by the plastic support 2 is respectively communicated with the air inlet air duct 603 and the air outlet air duct 604 formed inside the battery module 1, so that large-area heat dissipation of the single battery 101 can be realized.
Preferably, the unit cell 101 of the present embodiment has two poles;
The first connection part comprises a first main body part 20101, and a second avoiding area 209 for avoiding the pole is formed at the matching part of the first main body part 20101 and the pole in the embodiment;
the surface of the first main body part 20101 is protruded with a positioning part 208;
The busbar 5 is provided with a positioning hole 501, and the busbar 5 is positioned and installed through the positioning part 208 and the positioning hole 501.
In order to avoid the polar post of the single battery 101, a second avoiding area 209 is processed on the first main body part 20101, specifically, a group of second avoiding areas 209 are respectively arranged at two ends of the length direction of the first main body part 20101, and as the single battery 101 is arranged at two sides of the plastic bracket 2, each group of second avoiding areas 209 comprises two symmetrically distributed second avoiding areas 209, and meanwhile, the positioning part 208 is positioned between the two symmetrically distributed second avoiding areas 209; as a preferred embodiment, the positioning portion 208 according to the present embodiment may be a positioning column.
And the busbar 5 is provided with a positioning hole 501 matched with the positioning part 208.
Referring to fig. 3 and 4, when the battery module 1 is a plurality of strings, the bus bar 5 is electrically connected with the corresponding poles of two adjacent single batteries 101, the bus bar 5 is provided with a positioning hole 501, the positioning hole 501 is matched with the positioning part 208 to realize the positioning of the bus bar 5, the first elastic part 206 and the second elastic part 207 positioned at two sides of the bus bar 5 are clamped and fixed, and the bus bar 5 is electrically connected with the corresponding poles of the corresponding single batteries 101 by laser welding.
Referring to fig. 8 and 9, when the battery module 1 is multiple strings and two parallel, the busbar 5 is electrically connected with the corresponding poles of the four adjacent single batteries 101, one or two positioning holes 501 are formed in the busbar 5, the embodiment uses two positioning holes 501 as an example for further explanation and explanation, and one avoiding hole 502 is used for avoiding the positioning part 208 which is not needed for positioning through the avoiding hole 502, positioning of the busbar 5 is realized through cooperation of the positioning holes 501 and the corresponding positioning parts 208, clamping and fixing are realized through the first elastic parts 206 and the second elastic parts 207 positioned at two sides of the busbar 5, and the busbar 5 is electrically connected with the corresponding poles of the corresponding single batteries 101 through laser welding; as an extended embodiment, since the number of elastic parts for clamping the busbar 5 is large, which causes a problem of low working efficiency, the corresponding notch 503 or groove on the busbar 5 can be avoided without the need for elastic parts for clamping.
Through the comparison of the multiple strings and the two-parallel battery module 1, it can be found that the plastic bracket 2 of the embodiment can be compatible with different serial-parallel numbers, but in the prior art, referring to the plastic top covers in the battery module shown in fig. 1 and 2, the plastic top covers comprise the baffle plates, and the baffle plates are located at two sides of the busbar, so that two kinds of plastic top covers are needed. The requirements of different lengths and/or different serial-parallel numbers of the battery modules can be caused by different electric quantity and voltage platforms of different vehicles, the serial-parallel connection of the battery modules in the prior art can be limited by the structural design of the plastic top cover, and the plastic top covers with different structures are required for different serial-parallel numbers, so that the design and die cost is increased, and the production cost is increased; when the plastic bracket 2 of the embodiment is adopted, the requirements of different lengths and serial-parallel numbers of the battery modules 1 can be met, and the production cost is reduced.
The first connection portion 201 of the present embodiment includes:
second protruding portions 205 located at both ends in the longitudinal direction of the first body portion 20101;
One end of the second protrusion 205 in the thickness direction of the unit cell 101 has a first elastic portion 206, and the other end of the second protrusion 205 in the thickness direction of the unit cell 101 has a mounting hole 20501 penetrating the second protrusion 205;
the insulating cover 7 of the battery module 1 is assembled with the plastic holder 2 to be fixed to the mounting hole 20501.
Referring to fig. 7, further, a busbar installation space is reserved on the first body portion 20101 near the second protrusion 205;
the first main body 20101 has a second elastic portion 207 that engages with the first elastic portion 206, and both sides of the bus bar 5 in the width direction are respectively engaged and fixed by the first elastic portion 206 and the second elastic portion 207.
In order to be able to cooperate with the busbar 5, the end portions of the two ends of the first connection portion 201 of the plastic bracket 2 of the present embodiment are provided with the second protruding portion 205, the second protruding portion 205 has the first elastic portion 206, meanwhile, the first main body portion 20101 cooperating with the first elastic portion 206 is provided with the second elastic portion 207, the space between the first elastic portion 206 and the second elastic portion 207 is a busbar installation space, and after the busbar 5 is embedded in the busbar installation space, two sides of the busbar 5 in the width direction are respectively fastened and fixed by the first elastic portion 206 and the second elastic portion 207. The second elastic portion 207 of the present embodiment includes a connecting arm 20701 and a catching portion 20702 at the top of the connecting arm 20701 to catch the bus bar 5 by the catching portion 20702.
In addition, mounting holes 20501 are provided in the second protruding portion 205, and the insulating cover 7 can be assembled and fixed by fasteners.
Referring to fig. 10, the present invention also discloses a battery pack including a case 6 and a battery module 1 mounted in the case 6, between adjacent unit cells 101 in the battery module 1 is mounted a plastic holder 2 as described above.
Specifically, the battery pack of the present embodiment mainly includes the case 6, and the inside of the case 6 is hollow to form the above-described battery module 1. When the plastic bracket 2 is provided with a branch air duct, one side of the box body 6 along the length direction of the battery module 1 is provided with an air inlet 601, and the other end of the box body 6 along the length direction is provided with an air outlet 602; the bottom of the box 6 is provided with a groove, and the groove is configured as an air inlet channel 603 communicated with the air inlet 601; in addition, the upper part of the case 6 is formed with an air outlet duct 604 communicating with the air outlet 602; the plastic bracket 2 is provided with a branch air duct which is communicated with the air inlet air duct 603 and the air outlet air duct 604, the branch air duct penetrates through the plastic bracket 2 along the height direction of the single battery 101, and the branch air duct is formed by two large surfaces of the channel and the adjacent single battery 101.
Preferably, the battery module 1 further includes an insulating cover plate 7, and the insulating cover plate 7 is mounted on the top of the first connection portion 201, and forms an air outlet duct with the first connection portion 201.
In the technical scheme, the battery module and the battery pack provided by the invention have the following beneficial effects:
According to the battery module 1, the plastic bracket 2 is used for replacing the original adhesive tape and plastic top cover between two adjacent single batteries 101, so that the installation procedure is reduced, and the cost is reduced; the plastic bracket 2 has novel structure, has the functions of avoiding the bulge of the single battery 101, binding wires and/or positioning and fixing the busbar 5 and/or cooling air duct, meets the requirements of different lengths and serial-parallel numbers of the battery modules 1, has strong compatibility, and greatly reduces the production cost.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (7)
1. The battery module (1) comprises a shell and a plurality of single batteries (101) arranged along the length direction of the shell, and is characterized in that a plastic bracket (2) is arranged between every two adjacent single batteries (101);
the plastic holder (2) comprises:
a first connection part (201) positioned at the top of the unit cell (101);
A second connecting part (202) positioned at the bottom of the single battery (101); and
A third connection part (203) connected to the first connection part (201) and the second connection part (202) and extending in the height direction of the single battery (101);
adjacent single batteries (101) are separated through the third connecting part (203), the middle part of the third connecting part (203) is hollowed out to form a first avoiding area (20301), and expansion deformation of the single batteries (101) is avoided through the first avoiding area (20301);
The first connecting part (201) and the second connecting part (202) are provided with channels (204);
the channel (204) of the first connecting part (201) is positioned in the middle; the two channels (204) and the first avoidance area (20301) of the third connection part (203) form a branch air duct, and the branch air duct is used for heat dissipation and ventilation of the battery module (1).
2. The battery module according to claim 1, wherein the first connection part (201) includes:
A first main body part (20101) extending in the longitudinal direction of the single battery (101); and
A first protruding part (20102) which is located at a position near the end part in the longitudinal direction of the first main body part (20101) and protrudes from the surface of the first main body part (20101);
the length of the first protruding part (20102) is matched with the width of the first main body part (20101);
A wire tying groove (20103) penetrating through the first protruding portion (20102) is formed in one end of the connection portion between the first protruding portion (20102) and the first main body portion (20101).
3. The battery module according to claim 2, wherein the battery module (1) further comprises:
A plurality of bus bars (5), the bus bars (5) being electrically connected with the corresponding unit cells (101); and
An acquisition wire harness (3) extending in the length direction of the battery module (1), wherein the acquisition wire harness (3) is provided with a plurality of acquisition parts (301), and each acquisition part (301) is connected with the corresponding busbar (5);
The collection wiring harness (3) is arranged on the first convex part (20102), and the collection wiring harness (3) is fixedly connected with the plastic support (2) through a binding belt (4) penetrating through the binding groove (20103).
4. The battery module according to claim 1, further comprising a busbar (5);
the single battery (101) is provided with two poles;
The first connecting part comprises a first main body part (20101), and a second avoiding area (209) for avoiding the pole is formed at the matching part of the first main body part and the pole;
A positioning part (208) protrudes from the surface of the first main body part (20101);
The busbar (5) is provided with a positioning hole (501), and the busbar (5) is positioned and installed through the positioning part (208) and the positioning hole (501).
5. The battery module according to claim 4, wherein the first connection part (201) further includes:
second protruding parts (205) located at both ends of the first body part (20101) in the longitudinal direction;
the second protruding part (205) has a first elastic part (206) along one end of the thickness direction of the single battery (101), and the other end of the second protruding part (205) along the thickness direction of the single battery (101) has a mounting hole (20501) penetrating through the second protruding part (205).
6. The battery module according to claim 5, wherein the busbar installation space is reserved on the first main body portion (20101) near the second protruding portion (205);
The first main body part (20101) is provided with a second elastic part (207) matched with the first elastic part (206), and two sides of the busbar (5) in the width direction are respectively clamped and fixed through the first elastic part (206) and the second elastic part (207).
7. Battery pack comprising a case (6) and a battery module (1) mounted in the case (6), characterized in that a plastic holder (2) according to any one of claims 1 to 6 is mounted between adjacent unit cells (101) in the battery module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210527100.4A CN114927818B (en) | 2022-05-16 | 2022-05-16 | Battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210527100.4A CN114927818B (en) | 2022-05-16 | 2022-05-16 | Battery module and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114927818A CN114927818A (en) | 2022-08-19 |
| CN114927818B true CN114927818B (en) | 2024-04-19 |
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| CN219457916U (en) * | 2023-03-30 | 2023-08-01 | 惠州亿纬锂能股份有限公司 | Insulation bracket and battery module |
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