WO2021217967A1 - Battery module, battery pack and vehicle - Google Patents

Battery module, battery pack and vehicle Download PDF

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Publication number
WO2021217967A1
WO2021217967A1 PCT/CN2020/110879 CN2020110879W WO2021217967A1 WO 2021217967 A1 WO2021217967 A1 WO 2021217967A1 CN 2020110879 W CN2020110879 W CN 2020110879W WO 2021217967 A1 WO2021217967 A1 WO 2021217967A1
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WO
WIPO (PCT)
Prior art keywords
battery module
present disclosure
connection part
bracket
positioning structure
Prior art date
Application number
PCT/CN2020/110879
Other languages
French (fr)
Chinese (zh)
Inventor
杨重科
冯帅
赵亮
李成亮
翁志福
Original Assignee
昆山宝创新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010366599.6A external-priority patent/CN111477799A/en
Priority claimed from CN202020715667.0U external-priority patent/CN211858732U/en
Application filed by 昆山宝创新能源科技有限公司 filed Critical 昆山宝创新能源科技有限公司
Publication of WO2021217967A1 publication Critical patent/WO2021217967A1/en

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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
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • 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

Definitions

  • the present disclosure relates to the field of new energy vehicles. Specifically, the present disclosure relates to battery modules, battery packs, and vehicles.
  • the power battery pack exceeds 1m in both the length and width directions; and currently on the market, the length of the battery module is generally around 0.3m. Therefore, at least three or even more battery modules need to be installed in the power battery pack.
  • an object of the present disclosure is to propose a battery module, a battery pack, and a vehicle.
  • the single soft-packed cells in the battery module are connected in parallel, and the series tabs are directly connected, which realizes the cascade connection between each stacked body module. Therefore, the series and parallel copper bars between the stacks and the external installation structure are reduced, the module grouping accessories are reduced, the cost and weight are reduced, the space utilization rate is improved, and more pole groups can be accommodated in the battery pack, and the vehicle endurance can be improved. mileage.
  • the present disclosure proposes a battery module.
  • the battery module includes:
  • a laminated body the laminated body includes a plurality of stacked bodies, and each of the stacked bodies is formed by stacking a plurality of soft-packed batteries; in one of the stacked bodies, the positive ears of each of the soft-packed batteries Are connected to form a positive electrode connection part, the negative electrode tabs of each of the soft-packed batteries are connected to form a negative electrode connection part, and the stacked body passes through the positive electrode connection part/negative electrode connection part and the negative electrode connection part of another adjacent stacked body/ The positive connection part is connected in series;
  • the end support is arranged at the positive connection part or the negative connection part of the stack at both ends; the two ends of the end support are respectively provided with a first positioning structure, and the middle part is provided with a tab extension groove;
  • the first positioning structure includes a side guide post, a side guide groove, a side buckle, a side catch groove, a bracket mounting hole, and a middle mounting hole.
  • the side guide post and the side guide groove are respectively located The two sides of the first positioning structure are adapted to each other; the side buckle and the side snap groove are respectively located on both sides of the first positioning structure and are adapted to each other;
  • An intermediate support is arranged between two adjacent stacked bodies, and one of the intermediate supports is arranged on the left and right sides of the adjacent two stacked bodies; one end of the intermediate support is provided with The other end of the front guide column is provided with a second positioning structure, and the middle part is provided with a lug extension groove;
  • the second positioning structure includes a front guide groove, a side guide column, a side guide groove, a middle buckle and Bracket mounting holes, the side guide posts and the side guide grooves are respectively located on both sides of the second positioning structure, and are adapted to each other;
  • the front guide groove is adapted to the front guide post ;
  • the side plate is provided on the left and right sides of the laminated body, the side plate is provided with a plurality of side plate mounting holes and side plate clamping grooves, the side plate mounting hole and the bracket mounting hole Coaxially arranged, the side plate slot is adapted to the middle buckle;
  • top plate the top plate is arranged on the front and back sides of the plurality of stacked bodies, a plurality of top plate mounting holes are distributed on the top plate, and the top plate mounting holes are matched with the middle mounting holes.
  • each stack includes a plurality of soft-packed battery cells, and the positive ears in each soft-packed battery core gather to form a positive connection part, and the negative ears gather to form a negative connection part.
  • One stacked body is connected in series by a positive electrode connection portion and a negative electrode connection portion of another stacked body adjacent thereto, or one stacked body is connected in series by a negative electrode connection portion and a positive electrode connection portion of another stacked body adjacent thereto.
  • a middle bracket is arranged on the left and right sides of the two adjacent stacked bodies, and the positive connecting part or the negative connecting part of the stacked bodies at both ends are provided with end brackets.
  • the end bracket is provided with a first positioning structure.
  • the two sides of the first positioning structure are respectively provided with side guide grooves, side guide posts, side buckles and bracket mounting holes, so that two adjacent laminations are arranged side by side
  • the body can be installed and fixed by the side guide groove and the side guide post, and the installation stability is further improved by the side buckles on the two adjacent end brackets side by side; the two adjacent stacked bodies
  • a middle bracket is arranged between the left and right sides, and the two middle brackets are arranged in the opposite direction from top to bottom.
  • the front guide post on one middle bracket can be fitted and installed with the front guide groove on the other middle bracket to achieve Fixation of two adjacent stacked bodies in a laminated body; two adjacent laminated bodies side by side can be installed and fixed by side guide grooves and side guide posts, and through the middle clips on the two adjacent middle brackets side by side
  • the buckles are snapped to each other to further improve the installation stability;
  • the laminated body located on both sides of the battery module can use the bracket mounting holes and the side plate mounting holes to install the side plates with screws.
  • the end bracket and the middle bracket can be installed first, so that the tabs of each soft-packed cell extend out of the tab extension slot, and then Then connect each tab. Therefore, the end bracket and the middle bracket can play the role of limiting and supporting the tab rolling tool when the tab is bent.
  • Each side plate mounting hole on the side plate is adapted to the bracket mounting hole on the end bracket and the middle bracket, and can be connected by screws, and each side plate slot is respectively connected with the middle buckle (or side buckle) on the middle bracket Click to further improve the stability of installation.
  • the single soft-packed cells in the battery module are connected in parallel, and the series tabs are directly connected, thereby realizing the cascade connection between the various stacked modules. Therefore, the series and parallel copper bars between the stacks and the external installation structure are reduced, the module grouping accessories are reduced, the cost and weight are reduced, the space utilization rate is improved, and more pole groups can be accommodated in the battery pack, and the vehicle endurance can be improved. mileage.
  • the foldable battery pack reduces the use of external power connectors between modules, avoids bolt connections between modules, does not need to consider the connection stability and reliability of power connectors, reduces the internal resistance of the connection, and thus reduces the power battery The internal friction of the package in use.
  • the battery module according to the above-mentioned embodiments of the present disclosure may also have the following additional technical features:
  • each of the soft-packed batteries is bonded by structural glue.
  • the thickness of the structural adhesive is 0.05 to 0.2 mm.
  • the insulating flame-retardant material is selected from at least one of PP, ABS, PC, PA, and PA66.
  • a plurality of vertical connection holes are distributed on both sides of the side plate.
  • the end bracket and the intermediate bracket are made of insulating and flame-retardant materials.
  • the length of the battery module is not less than 600 mm.
  • the positive electrode connection part and the negative electrode connection part are connected in series by laser welding, ultrasonic welding or riveting.
  • the present disclosure proposes a battery pack.
  • the battery pack includes: the battery module of the above-mentioned embodiment. Therefore, the battery pack has all the features and advantages described above for the battery module, which will not be repeated here. In general, the battery pack has the advantages of lower cost and weight, higher space utilization and reliability.
  • the present disclosure proposes a vehicle.
  • the vehicle includes the battery module of the above-mentioned embodiment or the battery pack of the above-mentioned embodiment. Therefore, the vehicle has all the features and advantages described above for the battery module or battery pack, and will not be repeated here. In general, the vehicle has better reliability and cruising range.
  • Fig. 1 is a schematic structural diagram of a plurality of battery modules according to embodiments of the present disclosure
  • Fig. 2 is a schematic structural diagram of a laminated body in a battery module according to an embodiment of the present disclosure
  • Fig. 3 is a schematic structural diagram of a laminated body in a battery module according to an embodiment of the present disclosure
  • Figure 4 is a sectional view of A-A in Figure 3;
  • Fig. 5 is a schematic structural diagram of a soft-packed battery cell in a battery module according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of the structure of the stack 110a with the end bracket and the middle bracket installed in FIG. 3;
  • Figure 7 is an enlarged view of part A in Figure 6;
  • FIG. 8 is a schematic diagram of the structure of the stack 110b with the end bracket and the middle bracket installed in FIG. 3;
  • Figure 9 is an enlarged view of part B in Figure 8.
  • FIG. 10 is a schematic structural view of the stack 110c with the end bracket and the middle bracket installed in FIG. 3;
  • Fig. 11 is a schematic structural diagram of a side plate in a battery module according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a large-scale battery module group composed of two battery modules according to embodiments of the present disclosure
  • Fig. 13 is a schematic structural diagram of a top plate in a battery module according to an embodiment of the present disclosure
  • FIG. 14 is a schematic structural diagram of a battery module provided with a buffer foam insulation board according to an embodiment of the present disclosure
  • Figure 15 is an exploded view of Figure 14;
  • 16 is a schematic structural diagram of a buffer foam insulation board in a battery module according to an embodiment of the present disclosure
  • FIG. 17 is a schematic structural view from another perspective of a battery module provided with a buffer foam insulation board according to an embodiment of the present disclosure
  • Figure 18 is a sectional view of B-B in Figure 17;
  • Figure 19 is a cross-sectional view of C-C in Figure 17;
  • FIG. 20 is a schematic structural view from another perspective of a battery module provided with a buffer foam insulation board according to an embodiment of the present disclosure.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • fitting can be understood in a broad sense, or specifically refers to the arrangement positions of two or more structural units corresponding to each other, and they can be connected or fixed to each other; for example, the adaptation between the guide groove and the guide post can be understood Two structural units are correspondingly arranged, and the two structural units can be installed and fixed to each other.
  • the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch.
  • the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may be that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • the present disclosure proposes a battery module. 1-20, according to an embodiment of the present disclosure, the battery module includes:
  • the laminated body 100 includes a plurality of stacked bodies 110, and each of the stacked bodies 110 is formed by stacking a plurality of soft-packed cell stacks 111; in a stacked body 110, the positive ear of each soft-packed cell 111 Connected to form a positive electrode connection part, the negative electrode tabs of each soft-packed battery cell 111 are connected to form a negative electrode connection part, and the stacked body 110 passes through the positive electrode connection part/negative electrode connection part and the negative electrode connection part/positive connection part of another stacked body 110 adjacent to it.
  • the end support 200, the end support 200 is provided at the positive connection part or the negative connection part of the stack 110 at both ends; the end support 200 is provided with a first positioning structure 210 at both ends, and a tab extension groove 220 is provided in the middle;
  • the first positioning structure 210 includes a side guide post 211, a side guide slot (not shown in the drawings), a bracket mounting hole 213 and a side buckle 214, a side slot 215, a middle mounting hole 216, and a side guide
  • the posts 211 and the side guide grooves 212 are respectively located on both sides of the first positioning structure 210 and are adapted to each other; the side buckles 214 and the side latching grooves 215 are respectively located on both sides of the first positioning structure 210 and are adapted to each other ;
  • the middle bracket 300 is arranged between two adjacent stacked bodies 110, and a middle bracket 300 is arranged on the left and right sides of the adjacent two stacked bodies 110; one end of the middle bracket 300 is provided with a front guide post 310, the other end is provided with a second positioning structure 320, and the middle is provided with a tab extension groove 330;
  • the second positioning structure 320 includes a front guide groove 321, a side guide post 322, and a side guide groove (not shown in the figure) (Shown), the bracket mounting hole 324 and the middle buckle 325, the side guide posts 322 and the side guide grooves 323 are respectively located on both sides of the second positioning structure, and are adapted to each other; the front guide groove 321 and the front The guide post 310 is compatible;
  • the side plates 400 are provided on the left and right sides of the laminated body 100.
  • the side plates 400 are provided with a plurality of side plate mounting holes 430 and side plate clamping slots 440, side plate mounting holes 430 and bracket mounting holes 213 It is arranged coaxially with the bracket mounting hole 324, and the side plate slot 440 is matched with the middle buckle 325;
  • the top plate 500 is provided on the front and rear sides of the plurality of stacked bodies 110, and a plurality of top plate mounting holes 510 are distributed on the top plate 500, and the top plate mounting holes 510 are matched with the middle mounting holes 216.
  • each stack includes a plurality of soft-packed battery cells, and the positive ears in each soft-packed battery core gather to form a positive connection part, and the negative ears gather to form a negative connection part.
  • One stacked body is connected in series by a positive electrode connection portion and a negative electrode connection portion of another stacked body adjacent thereto, or one stacked body is connected in series by a negative electrode connection portion and a positive electrode connection portion of another stacked body adjacent thereto.
  • a middle bracket is arranged on the left and right sides of the two adjacent stacked bodies, and the positive connecting part or the negative connecting part of the stacked bodies at both ends are provided with end brackets.
  • the end bracket is provided with a first positioning structure.
  • the two sides of the first positioning structure are respectively provided with side guide grooves, side guide posts, side buckles and bracket mounting holes, so that two adjacent laminations are arranged side by side
  • the body can be installed and fixed by the side guide groove and the side guide post, and the installation stability is further improved by the side buckles on the two adjacent end brackets side by side; the two adjacent stacked bodies
  • a middle bracket is arranged between the left and right sides, and the two middle brackets are arranged in the opposite direction from top to bottom.
  • the front guide post on one middle bracket can be fitted and installed with the front guide groove on the other middle bracket to achieve Fixation of two adjacent stacked bodies in a laminated body; two adjacent laminated bodies side by side can be installed and fixed by side guide grooves and side guide posts, and through the middle clips on the two adjacent middle brackets side by side
  • the buckles are snapped to each other to further improve the installation stability;
  • the laminated body located on both sides of the battery module can use the bracket mounting holes and the side plate mounting holes to install the side plates with screws.
  • the end bracket and the middle bracket can be installed first, so that the tabs of each soft-packed cell extend out of the tab extension slot, and then Then connect each tab. Therefore, the end bracket and the middle bracket can play the role of limiting and supporting the tab rolling tool when the tab is bent.
  • Each side plate mounting hole on the side plate is adapted to the bracket mounting hole on the end bracket and the middle bracket, and can be connected by screws, and each side plate slot is respectively connected with the middle buckle (or side buckle) on the middle bracket Click to further improve the stability of installation.
  • the single soft-packed cells in the battery module are connected in parallel, and the series tabs are directly connected, thereby realizing the cascade connection between the various stacked modules. Therefore, the series and parallel copper bars between the stacks and the external installation structure are reduced, the module grouping accessories are reduced, the cost and weight are reduced, the space utilization rate is improved, and more pole groups can be accommodated in the battery pack, and the vehicle endurance can be improved. mileage.
  • the folding battery pack reduces the use of external power connectors between modules, avoids bolt connections between modules, does not need to consider the connection stability and reliability of power connectors, reduces the internal resistance of the connection, and thus reduces the power battery The internal friction of the package in use.
  • the battery module according to the embodiment of the present disclosure will be further described in detail below.
  • the soft-packed battery cell 111 includes a positive lug 111a and a negative lug 111b.
  • a packaging structure, such as aluminum plastic film, is also wrapped around the soft-pack battery core 111.
  • the tabs in each soft-packed battery cell may be connected to form a positive electrode connection part or a negative electrode connection part by means of ultrasonic welding, laser welding, argon arc welding, or the like.
  • the number of stacked bodies in a laminated body includes at least two, that is, two stacked bodies at the ends, and the number of stacked bodies in the middle of the laminated body is not particularly limited. , Can be set to 0, 1, 2, 3, etc. according to actual needs.
  • the laminated body shown in FIGS. 3 and 4 includes two stacked bodies (110a and 110c) at the ends and a stacked body (110b) at the middle. 6 to 10 specifically show the structural schematic diagrams of each stack in the laminated body and the end bracket and/or the middle bracket installed on it.
  • both ends of the end bracket 200 are respectively provided with a first positioning structure 210, the middle is provided with a lug extension groove 220;
  • the first positioning structure 210 includes a side guide post 211, a side guide groove 212,
  • the bracket mounting hole 213, the side buckle 214, the side buckle 215, the side guide post 211 and the side guide groove 212 are respectively located on both sides of the first positioning structure 210, and are adapted to each other;
  • the side buckles 214 and The side grooves 215 are respectively located on two sides of the first positioning structure 210 and are adapted to each other. Therefore, two laminated bodies adjacent to each other can be installed and fixed by the side guide groove and the side guide post.
  • the bracket 213 is used to install the side plate 400.
  • the middle bracket 300 is provided with a front guide post 310 at one end, a second positioning structure 320 is provided at the other end, and a tab protrusion groove 330 is provided in the middle;
  • the second positioning structure 320 includes a front guide groove 321, the side guide post 322, the side guide groove 323, the bracket mounting hole 324 and the middle buckle 325, the side guide post 322 and the side guide groove 323 are respectively located on both sides of the second positioning structure, and are compatible with each other Match;
  • the front guide groove 321 is matched with the front guide post 310.
  • the bracket mounting hole 324 is used for mounting the side plate 400.
  • the two middle buckles 325 with corresponding positions can be clamped to each other, thereby further improving the stability of the structure.
  • the front guide post 310 and the side guide post 322 used on the middle bracket 300 can also be configured as a snap structure, thereby further improving the relationship between the side guide post 322 and the side guide groove 323. Connection stability.
  • the number of tab protruding grooves is the same as the number of soft-packed cells in the stack to which it is installed, so as to ensure the poles of each soft-packed cell.
  • the ears can be guided to extend from the tab extension groove, and then connect to form a positive connection part or a negative connection part.
  • the use of the same number of tab extension slots as the soft-clad cell can also prevent welding slag from flying into the cell during the welding process of each tab.
  • the material of the side plate may be metal or plastic, and the metal may be, for example, aluminum, copper, iron, and alloy materials thereof.
  • the plastic is preferably a high-strength thermosetting plastic, such as SMC (sheet molding compound).
  • SMC sheet molding compound
  • the end bracket and the middle bracket can be connected in parallel for each soft-packed battery cell in the stack to obtain tabs for protection.
  • the above-mentioned end brackets and intermediate brackets are made of insulating and flame-retardant materials, such as PP, ABS, PC, PA, PA66, and the like.
  • a plurality of vertical connection holes 450 are distributed on both sides of the side plate.
  • the multiple battery modules can be connected by screws or screws through the vertical connection hole 450.
  • two or more battery modules can also be assembled side by side to assemble a large module.
  • the length of the aforementioned battery module is not less than 600 mm.
  • the above-mentioned positive electrode connection part and the negative electrode connection part are connected in series by laser welding, ultrasonic welding or riveting.
  • the tabs of each stacked body in the laminated body are connected individually or in combination in the above manner.
  • the top plate 500 is provided with a plurality of top plate mounting holes 510, and the top plate mounting holes 510 are matched with the middle mounting holes 216 on the end bracket 200 and are positioned oppositely. Therefore, the top plate 500 and the end bracket 200 can be installed and fixed with screws through the top plate mounting hole 510 and the middle mounting hole 216.
  • the battery module of the present disclosure may also be provided with a buffer foam insulation board 600.
  • the buffer foam insulation board 600 is arranged between the two laminated bodies 100. Therefore, the buffer foam insulation board can not only provide a fixed pre-tightening force for the initial assembly of the battery pack, but also The expansion force of the battery cell can be absorbed in the later stage of the battery pack.
  • the thickness of the above-mentioned multi-layer buffer foam insulation board may be 5-20% of the total thickness of the multi-layer soft-packed cells.
  • the structure of the buffer foam insulation board 600 is shown in Figure 16.
  • the buffer foam insulation board 600 is also provided with a plurality of escape holes 610. The position is corresponding, and the aperture is slightly larger than the above structure, which will not affect the installation between the two laminated bodies.
  • the cushion foam insulation board 600 may be made of cushion insulation materials such as PU and EVA.
  • the structural adhesive can be further used for bonding between the laminated body and the laminated body, and the thickness of the structural adhesive can be 0.05-0.2mm, for example, 0.05mm, 0.1mm, 0.15mm, 0.2mm, etc. As a result, the structural stability between the components can be further improved.
  • the folding battery pack according to the embodiments of the present disclosure has at least one of the following advantages:
  • the internal connection of the battery module has no additional conductive structures such as copper bars and aluminum bars, so the cost is low and the connection is fast;
  • the soft-packed cells in the stacked body are connected in parallel, and then the stacked bodies are connected in series to form a laminated body, and each laminated body is connected in series, thereby reducing the number of assembled parts;
  • the laminated bodies are connected by the side guide grooves and the side guide posts on the side of the end protective shell and the middle protective shell. According to the actual power requirements, multiple laminated bodies can be combined and installed, which is convenient and fast; at the same time, buckles are used. Card connection, higher connection stability.
  • the multiple stacks in the laminated body are connected by the front guide post and the front guide post of the middle protective shell, so the installation is fast and stable.
  • the laminated body and the side plate and the top plate are fixed by structural adhesive bonding and screws, and the connection reliability is higher.
  • the present disclosure proposes a battery pack.
  • the battery pack includes: the battery module of the above-mentioned embodiment. Therefore, the battery pack has all the features and advantages described above for the battery module, which will not be repeated here. In general, the battery pack has the advantages of lower cost and weight, higher space utilization and reliability.
  • the present disclosure proposes a vehicle.
  • the vehicle includes the battery module of the above-mentioned embodiment or the battery pack of the above-mentioned embodiment. Therefore, the vehicle has all the features and advantages described above for the battery module or battery pack, and will not be repeated here. In general, the vehicle has better reliability and cruising range.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Provided are a battery module, a battery pack and a vehicle. The battery module comprises: a lamination body, the lamination body comprising a plurality of laminated bodies, wherein each laminated body is formed by laminating a plurality of pouch cells; in each laminated body, positive and negative pole tabs of each pouch cell are respectively connected to form a positive pole connection portion and a negative pole connection portion; and each laminated body is in series connection with the negative pole connection portion/positive pole connection portion of another laminated body adjacent to the laminated body by means of the positive pole connection portion/negative pole connection portion thereof. The battery module further comprises: tail supports arranged at the positive pole connection portion or the negative pole connection portion of the laminated bodies at two ends; and middle supports arranged between every two adjacent laminated bodies.

Description

电池模块、电池包和车辆Battery modules, battery packs and vehicles
优先权信息Priority information
本公开请求于2020年4月30日向中国国家知识产权局提交的、专利申请号为202010366599.6、202020715667.0、申请名称为“电池模块、电池包和车辆”的中国专利申请的优先权，并且其全部内容通过引用结合在本公开中。This disclosure requests the priority of the Chinese patent application filed with the State Intellectual Property Office of China on April 30, 2020, with the patent application numbers 202010366599.6, 202020715667.0, and the application name "Battery Modules, Battery Packs and Vehicles", and its entire contents Incorporated in this disclosure by reference.
技术领域Technical field
本公开涉及新能源汽车领域，具体而言，本公开涉及电池模块、电池包和车辆。The present disclosure relates to the field of new energy vehicles. Specifically, the present disclosure relates to battery modules, battery packs, and vehicles.
背景技术Background technique
随着新能源汽车的不断普及，新能源汽车中动力电池的使用要求变得越来越高。特别是用户对新能源汽车续时里程的要求不断提高，常见的新能源汽车，动力电池包无论在长度还是宽度方向，都超过1m；而目前市面上，电池模块的长度一般在0.3m左右，所以在动力电池包中，需要设置至少三个，甚至更多电池模块。With the continuous popularization of new energy vehicles, the requirements for the use of power batteries in new energy vehicles have become higher and higher. In particular, users’ requirements for the continued mileage of new energy vehicles continue to increase. For common new energy vehicles, the power battery pack exceeds 1m in both the length and width directions; and currently on the market, the length of the battery module is generally around 0.3m. Therefore, at least three or even more battery modules need to be installed in the power battery pack.
设置多个电池模块，则需要对每个电池模块均添加固定结构，组装复杂。同时，相邻两个电池模块之间需要通过外设的动力连接件进行动力连接。电池模块安装结构较多，不仅导致成本提高，而且导致整体重量上升；同时，单个模组体积内，安装结构占用了较多的内部空间，造成动力电池模块，电池包整体容量降低，电池包内电池模块设置越多，空间浪费就越多。另外，因需要设置多个外置动力连接件进行动力连接，导致内阻、成本增加，提高了动力电池包在使用中的内耗和成本。To set up multiple battery modules, it is necessary to add a fixing structure to each battery module, and the assembly is complicated. At the same time, the power connection between two adjacent battery modules needs to be done through the power connector of the external device. There are many battery module installation structures, which not only increase the cost, but also increase the overall weight; at the same time, within the volume of a single module, the installation structure occupies more internal space, causing the power battery module and the overall capacity of the battery pack to decrease. The more battery modules are installed, the more space is wasted. In addition, because multiple external power connectors need to be provided for power connection, internal resistance and cost increase, and internal consumption and cost of the power battery pack in use are increased.
综上所述，现有的新能源汽车电池组仍有待改进。In summary, the existing battery packs for new energy vehicles still need to be improved.
公开内容Public content
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的一个目的在于提出电池模块、电池包和车辆。该电池模块中的单体软包电芯并联，串联极耳直接连接，实现了各个堆叠体模块之间的级联。从而，减少了堆叠体之间的串并联铜排以及外部安装结构，减少模块成组附件，降低成本和重量，提高空间利用率，进而可以在电池包能容纳更多的极组，提升车辆续航里程。The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an object of the present disclosure is to propose a battery module, a battery pack, and a vehicle. The single soft-packed cells in the battery module are connected in parallel, and the series tabs are directly connected, which realizes the cascade connection between each stacked body module. Therefore, the series and parallel copper bars between the stacks and the external installation structure are reduced, the module grouping accessories are reduced, the cost and weight are reduced, the space utilization rate is improved, and more pole groups can be accommodated in the battery pack, and the vehicle endurance can be improved. mileage.
在本公开的一个方面，本公开提出了一种电池模块。根据本公开的实施例，该电池模 块包括：In one aspect of the present disclosure, the present disclosure proposes a battery module. According to an embodiment of the present disclosure, the battery module includes:
叠片体，所述叠片体包括多个堆叠体，每个所述堆叠体由多个软包电芯堆叠而成；在一个所述堆叠体中，各个所述软包电芯的正极耳连接形成正极连接部，各个所述软包电芯的负极耳连接形成负极连接部，所述堆叠体通过正极连接部/负极连接部和与其相邻的另一个所述堆叠体的负极连接部/正极连接部串联连接；A laminated body, the laminated body includes a plurality of stacked bodies, and each of the stacked bodies is formed by stacking a plurality of soft-packed batteries; in one of the stacked bodies, the positive ears of each of the soft-packed batteries Are connected to form a positive electrode connection part, the negative electrode tabs of each of the soft-packed batteries are connected to form a negative electrode connection part, and the stacked body passes through the positive electrode connection part/negative electrode connection part and the negative electrode connection part of another adjacent stacked body/ The positive connection part is connected in series;
末端支架，所述末端支架设在位于两端的所述堆叠体的正极连接部或负极连接部；所述末端支架的两端分别设有一个第一定位结构、中部设有极耳伸出槽；所述第一定位结构包括侧部导向柱、侧部导向槽、侧部卡扣、侧部卡槽、支架安装孔和中部安装孔，所述侧部导向柱和所述侧部导向槽分别位于所述第一定位结构的两侧，且相互适配；所述侧部卡扣和所述侧部卡槽分别位于所述第一定位结构的两侧，且相互适配；An end support, the end support is arranged at the positive connection part or the negative connection part of the stack at both ends; the two ends of the end support are respectively provided with a first positioning structure, and the middle part is provided with a tab extension groove; The first positioning structure includes a side guide post, a side guide groove, a side buckle, a side catch groove, a bracket mounting hole, and a middle mounting hole. The side guide post and the side guide groove are respectively located The two sides of the first positioning structure are adapted to each other; the side buckle and the side snap groove are respectively located on both sides of the first positioning structure and are adapted to each other;
中间支架，所述中间支架设在相邻的两个所述堆叠体之间，且相邻的两个所述堆叠体之间左右各设置一个所述中间支架；所述中间支架的一端设有前部导向柱，另一端设有一个第二定位结构，中部设有极耳伸出槽；所述第二定位结构包括前部导向槽、侧部导向柱、侧部导向槽、中间卡扣和支架安装孔，所述侧部导向柱和所述侧部导向槽分别位于所述第二定位结构的两侧，且相互适配；所述前部导向槽与所述前部导向柱相适配；An intermediate support, the intermediate support is arranged between two adjacent stacked bodies, and one of the intermediate supports is arranged on the left and right sides of the adjacent two stacked bodies; one end of the intermediate support is provided with The other end of the front guide column is provided with a second positioning structure, and the middle part is provided with a lug extension groove; the second positioning structure includes a front guide groove, a side guide column, a side guide groove, a middle buckle and Bracket mounting holes, the side guide posts and the side guide grooves are respectively located on both sides of the second positioning structure, and are adapted to each other; the front guide groove is adapted to the front guide post ；
侧板，所述侧板设在所述叠片体的左右两侧，所述侧板上设有多个侧板安装孔和侧板卡槽，所述侧板安装孔与所述支架安装孔同轴设置，所述侧板卡槽与所述中间卡扣相适配；Side plate, the side plate is provided on the left and right sides of the laminated body, the side plate is provided with a plurality of side plate mounting holes and side plate clamping grooves, the side plate mounting hole and the bracket mounting hole Coaxially arranged, the side plate slot is adapted to the middle buckle;
顶板，所述顶板设在所述多个堆叠体的前后两侧，所述顶板上分布设有多个顶板安装孔，所述顶板安装孔与所述中部安装孔相适配。A top plate, the top plate is arranged on the front and back sides of the plurality of stacked bodies, a plurality of top plate mounting holes are distributed on the top plate, and the top plate mounting holes are matched with the middle mounting holes.
根据本公开实施例的电池模块中，每个堆叠体中包括多个软包电芯，各个软包电芯中的正极耳汇集形成正极连接部，负极耳汇集形成负极连接部。一个堆叠体通过正极连接部和与其相邻的另一个堆叠体的负极连接部串联连接，或者一个堆叠体通过负极连接部和与其相邻的另一个堆叠体的正极连接部串联连接。In the battery module according to the embodiment of the present disclosure, each stack includes a plurality of soft-packed battery cells, and the positive ears in each soft-packed battery core gather to form a positive connection part, and the negative ears gather to form a negative connection part. One stacked body is connected in series by a positive electrode connection portion and a negative electrode connection portion of another stacked body adjacent thereto, or one stacked body is connected in series by a negative electrode connection portion and a positive electrode connection portion of another stacked body adjacent thereto.
相邻的两个堆叠体之间左右各设置一个中间支架，位于两端的堆叠体的正极连接部或负极连接部设有末端支架。末端支架上具有第一定位结构，该第一定位结构的两侧分别设有侧部导向槽、侧部导向柱、侧部卡扣和支架安装孔，由此，并排相邻的两个叠片体可以通过侧部导向槽和侧部导向柱安装固定，并通过并排相邻的两个末端支架上的侧部卡扣相互卡接来进一步提高安装稳定性；相邻的两个所述堆叠体之间左右各设置一个中间支架，两个中间支架的按照上下相反的方向设置，由此，一个中间支架上的前部导向柱可以与另一中间支架上的前部导向槽适配安装，实现一个叠片体中相邻两堆叠体的固定；并排相邻 的两个叠片体可以通过侧部导向槽和侧部导向柱安装固定，并通过并排相邻的两个中间支架上的中间卡扣相互卡接来进一步提高安装稳定性；位于电池模块两侧的叠片体，则可以利用支架安装孔和侧板安装孔通过螺钉来安装侧板。另外，在叠片体生产阶段，可在将多个软包电芯堆叠为堆叠体后，先安装末端支架和中间支架，使各个软包电芯的极耳伸出极耳伸出槽，然后再对各个极耳进行连接。从而，末端支架和中间支架可以在极耳弯折时起到限位和支撑极耳辊压工装的作用。侧板上的各个侧板安装孔分别与末端支架和中间支架上的支架安装孔适配，可通过螺钉连接，各个侧板卡槽分别与中间支架上的中间卡扣(或侧部卡扣)卡接，进一步提高安装的稳定性。A middle bracket is arranged on the left and right sides of the two adjacent stacked bodies, and the positive connecting part or the negative connecting part of the stacked bodies at both ends are provided with end brackets. The end bracket is provided with a first positioning structure. The two sides of the first positioning structure are respectively provided with side guide grooves, side guide posts, side buckles and bracket mounting holes, so that two adjacent laminations are arranged side by side The body can be installed and fixed by the side guide groove and the side guide post, and the installation stability is further improved by the side buckles on the two adjacent end brackets side by side; the two adjacent stacked bodies A middle bracket is arranged between the left and right sides, and the two middle brackets are arranged in the opposite direction from top to bottom. Therefore, the front guide post on one middle bracket can be fitted and installed with the front guide groove on the other middle bracket to achieve Fixation of two adjacent stacked bodies in a laminated body; two adjacent laminated bodies side by side can be installed and fixed by side guide grooves and side guide posts, and through the middle clips on the two adjacent middle brackets side by side The buckles are snapped to each other to further improve the installation stability; the laminated body located on both sides of the battery module can use the bracket mounting holes and the side plate mounting holes to install the side plates with screws. In addition, in the production stage of the laminated body, after stacking multiple soft-pack batteries into a stacked body, the end bracket and the middle bracket can be installed first, so that the tabs of each soft-packed cell extend out of the tab extension slot, and then Then connect each tab. Therefore, the end bracket and the middle bracket can play the role of limiting and supporting the tab rolling tool when the tab is bent. Each side plate mounting hole on the side plate is adapted to the bracket mounting hole on the end bracket and the middle bracket, and can be connected by screws, and each side plate slot is respectively connected with the middle buckle (or side buckle) on the middle bracket Click to further improve the stability of installation.
由此，该电池模块中的单体软包电芯并联，串联极耳直接连接，实现了各个堆叠体模块之间的级联。从而，减少了堆叠体之间的串并联铜排以及外部安装结构，减少模块成组附件，降低成本和重量，提高空间利用率，进而可以在电池包能容纳更多的极组，提升车辆续航里程。同时，该折叠电池组减少了模块之间外部动力连接件的使用，避免模组之间螺栓连接，无需考虑动力连接件的连接稳定性及可靠性，降低了连接内阻，进而减少了动力电池包在使用中的内耗。As a result, the single soft-packed cells in the battery module are connected in parallel, and the series tabs are directly connected, thereby realizing the cascade connection between the various stacked modules. Therefore, the series and parallel copper bars between the stacks and the external installation structure are reduced, the module grouping accessories are reduced, the cost and weight are reduced, the space utilization rate is improved, and more pole groups can be accommodated in the battery pack, and the vehicle endurance can be improved. mileage. At the same time, the foldable battery pack reduces the use of external power connectors between modules, avoids bolt connections between modules, does not need to consider the connection stability and reliability of power connectors, reduces the internal resistance of the connection, and thus reduces the power battery The internal friction of the package in use.
另外，根据本公开上述实施例的电池模块还可以具有如下附加的技术特征：In addition, the battery module according to the above-mentioned embodiments of the present disclosure may also have the following additional technical features:
在本公开的一些实施例中，所述堆叠体中，各个所述软包电芯通过结构胶粘接。In some embodiments of the present disclosure, in the stacked body, each of the soft-packed batteries is bonded by structural glue.
在本公开的一些实施例中，所述结构胶的厚度为0.05～0.2mm。In some embodiments of the present disclosure, the thickness of the structural adhesive is 0.05 to 0.2 mm.
在本公开的一些实施例中，所述绝缘阻燃材质选自PP、ABS、PC、PA、PA66中的至少之一。In some embodiments of the present disclosure, the insulating flame-retardant material is selected from at least one of PP, ABS, PC, PA, and PA66.
在本公开的一些实施例中，所述侧板的两侧面分布设有多个竖直连接孔。In some embodiments of the present disclosure, a plurality of vertical connection holes are distributed on both sides of the side plate.
在本公开的一些实施例中，所述末端支架和所述中间支架为绝缘阻燃材质。In some embodiments of the present disclosure, the end bracket and the intermediate bracket are made of insulating and flame-retardant materials.
在本公开的一些实施例中，所述电池模块的长度不小于600mm。In some embodiments of the present disclosure, the length of the battery module is not less than 600 mm.
在本公开的一些实施例中，所述正极连接部和所述负极连接部之间通过激光焊接、超声波焊接或铆接串联连接。In some embodiments of the present disclosure, the positive electrode connection part and the negative electrode connection part are connected in series by laser welding, ultrasonic welding or riveting.
在本公开的另一方面，本公开提出了一种电池包。根据本公开的实施例，该电池包包括：上述实施例的电池模块。由此，该电池包具有前文针对电池模组所描述的全部特征和优点，在此不再一一赘述。总得来说，该电池包具有更低的成本和重量、更高的空间利用率和可靠性等优点。In another aspect of the present disclosure, the present disclosure proposes a battery pack. According to an embodiment of the present disclosure, the battery pack includes: the battery module of the above-mentioned embodiment. Therefore, the battery pack has all the features and advantages described above for the battery module, which will not be repeated here. In general, the battery pack has the advantages of lower cost and weight, higher space utilization and reliability.
在本公开的再一方面，本公开提出了一种车辆。根据本公开的实施例，该车辆包括上述实施例的电池模块或上述实施例的电池包。由此，该车辆具有前文针对电池模组或电池 包所描述的全部特征和优点，在此不再一一赘述。总得来说，该车辆具有更佳的可靠性和续航里程。In another aspect of the present disclosure, the present disclosure proposes a vehicle. According to an embodiment of the present disclosure, the vehicle includes the battery module of the above-mentioned embodiment or the battery pack of the above-mentioned embodiment. Therefore, the vehicle has all the features and advantages described above for the battery module or battery pack, and will not be repeated here. In general, the vehicle has better reliability and cruising range.
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。The additional aspects and advantages of the present disclosure will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present disclosure.
附图说明Description of the drawings
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:
图1是多个根据本公开实施例的电池模块的结构示意图；Fig. 1 is a schematic structural diagram of a plurality of battery modules according to embodiments of the present disclosure;
图2是根据本公开实施例的电池模块中一个叠片体的结构示意图；Fig. 2 is a schematic structural diagram of a laminated body in a battery module according to an embodiment of the present disclosure;
图3是根据本公开实施例的电池模块中一个叠片体的结构示意图；Fig. 3 is a schematic structural diagram of a laminated body in a battery module according to an embodiment of the present disclosure;
图4是图3中A-A剖面图；Figure 4 is a sectional view of A-A in Figure 3;
图5是根据本公开实施例的电池模块中软包电芯的结构示意图；Fig. 5 is a schematic structural diagram of a soft-packed battery cell in a battery module according to an embodiment of the present disclosure;
图6是图3中安装有末端支架和中间支架的堆叠体110a的结构示意图；FIG. 6 is a schematic diagram of the structure of the stack 110a with the end bracket and the middle bracket installed in FIG. 3;
图7是图6中A部位的放大图；Figure 7 is an enlarged view of part A in Figure 6;
图8是图3中安装有末端支架和中间支架的堆叠体110b的结构示意图；FIG. 8 is a schematic diagram of the structure of the stack 110b with the end bracket and the middle bracket installed in FIG. 3;
图9是图8中B部位的放大图；Figure 9 is an enlarged view of part B in Figure 8;
图10图3中安装有末端支架和中间支架的堆叠体110c的结构示意图；FIG. 10 is a schematic structural view of the stack 110c with the end bracket and the middle bracket installed in FIG. 3;
图11是根据本公开实施例的电池模块中侧板的结构示意图；Fig. 11 is a schematic structural diagram of a side plate in a battery module according to an embodiment of the present disclosure;
图12是两个根据本公开实施例的电池模块组成的大型电池模块组的结构示意图；FIG. 12 is a schematic structural diagram of a large-scale battery module group composed of two battery modules according to embodiments of the present disclosure;
图13是根据本公开实施例的电池模块中顶板的结构示意图；Fig. 13 is a schematic structural diagram of a top plate in a battery module according to an embodiment of the present disclosure;
图14是根据本公开实施例的设有缓冲泡棉绝缘板的电池模块的结构示意图；14 is a schematic structural diagram of a battery module provided with a buffer foam insulation board according to an embodiment of the present disclosure;
图15是图14的***图；Figure 15 is an exploded view of Figure 14;
图16是根据本公开实施例的电池模块中缓冲泡棉绝缘板的结构示意图；16 is a schematic structural diagram of a buffer foam insulation board in a battery module according to an embodiment of the present disclosure;
图17是根据本公开实施例的设有缓冲泡棉绝缘板的电池模块另一视角的结构示意图；FIG. 17 is a schematic structural view from another perspective of a battery module provided with a buffer foam insulation board according to an embodiment of the present disclosure;
图18是图17中B-B剖面图；Figure 18 is a sectional view of B-B in Figure 17;
图19是图17中C-C剖面图；Figure 19 is a cross-sectional view of C-C in Figure 17;
图20是根据本公开实施例的设有缓冲泡棉绝缘板的电池模块另一视角的结构示意图。FIG. 20 is a schematic structural view from another perspective of a battery module provided with a buffer foam insulation board according to an embodiment of the present disclosure.
具体实施方式Detailed ways
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are intended to explain the present disclosure, but should not be construed as limiting the present disclosure.
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” are based on the orientation shown in the drawings The or positional relationship is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
在本公开中，除非另有明确的规定和限定，“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。术语“适配”可以做广义理解，或具体指两个或多个结构单元之间的设置位置对应，且彼此之间可以相互连接或固定；例如导向槽与导向柱之间的适配可理解为两结构单元对应设置，且两结构单元可彼此安装固定。In the present disclosure, unless otherwise clearly defined and defined, terms such as "installation", "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection or a detachable connection. Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clear limited. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood according to specific circumstances. The term "fitting" can be understood in a broad sense, or specifically refers to the arrangement positions of two or more structural units corresponding to each other, and they can be connected or fixed to each other; for example, the adaptation between the guide groove and the guide post can be understood Two structural units are correspondingly arranged, and the two structural units can be installed and fixed to each other.
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present disclosure, unless otherwise clearly defined and defined, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than the second feature. The “below”, “below” and “below” of the second feature of the first feature may be that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
在本公开的一个方面，本公开提出了一种电池模块。参考图1～20，根据本公开的实施例，该电池模块包括：In one aspect of the present disclosure, the present disclosure proposes a battery module. 1-20, according to an embodiment of the present disclosure, the battery module includes:
叠片体100，叠片体100包括多个堆叠体110，每个堆叠体110由多个软包电芯堆111叠而成；在一个堆叠体110中，各个软包电芯111的正极耳连接形成正极连接部，各个软包 电芯111的负极耳连接形成负极连接部，堆叠体110通过正极连接部/负极连接部和与其相邻的另一个堆叠体110的负极连接部/正极连接部串联连接；The laminated body 100 includes a plurality of stacked bodies 110, and each of the stacked bodies 110 is formed by stacking a plurality of soft-packed cell stacks 111; in a stacked body 110, the positive ear of each soft-packed cell 111 Connected to form a positive electrode connection part, the negative electrode tabs of each soft-packed battery cell 111 are connected to form a negative electrode connection part, and the stacked body 110 passes through the positive electrode connection part/negative electrode connection part and the negative electrode connection part/positive connection part of another stacked body 110 adjacent to it. Series connection
末端支架200，末端支架200设在位于两端的堆叠体110的正极连接部或负极连接部；末端支架200的两端分别设有一个第一定位结构210、中部设有极耳伸出槽220；第一定位结构210包括侧部导向柱211、侧部导向槽(附图中未示出)、支架安装孔213和侧部卡扣214、侧部卡槽215、中部安装孔216，侧部导向柱211和侧部导向槽212分别位于第一定位结构210的两侧，且相互适配；侧部卡扣214和侧部卡槽215分别位于第一定位结构210的两侧，且相互适配；The end support 200, the end support 200 is provided at the positive connection part or the negative connection part of the stack 110 at both ends; the end support 200 is provided with a first positioning structure 210 at both ends, and a tab extension groove 220 is provided in the middle; The first positioning structure 210 includes a side guide post 211, a side guide slot (not shown in the drawings), a bracket mounting hole 213 and a side buckle 214, a side slot 215, a middle mounting hole 216, and a side guide The posts 211 and the side guide grooves 212 are respectively located on both sides of the first positioning structure 210 and are adapted to each other; the side buckles 214 and the side latching grooves 215 are respectively located on both sides of the first positioning structure 210 and are adapted to each other ；
中间支架300，中间支架300设在相邻的两个堆叠体110之间，且相邻的两个堆叠体110之间左右各设置一个中间支架300；中间支架300的一端设有前部导向柱310，另一端设有一个第二定位结构320，中部设有极耳伸出槽330；第二定位结构320包括前部导向槽321、侧部导向柱322、侧部导向槽(附图中未示出)、支架安装孔324和中间卡扣325，侧部导向柱322和侧部导向槽323分别位于所述第二定位结构的两侧，且相互适配；前部导向槽321与前部导向柱310相适配；The middle bracket 300 is arranged between two adjacent stacked bodies 110, and a middle bracket 300 is arranged on the left and right sides of the adjacent two stacked bodies 110; one end of the middle bracket 300 is provided with a front guide post 310, the other end is provided with a second positioning structure 320, and the middle is provided with a tab extension groove 330; the second positioning structure 320 includes a front guide groove 321, a side guide post 322, and a side guide groove (not shown in the figure) (Shown), the bracket mounting hole 324 and the middle buckle 325, the side guide posts 322 and the side guide grooves 323 are respectively located on both sides of the second positioning structure, and are adapted to each other; the front guide groove 321 and the front The guide post 310 is compatible;
侧板400，侧板400设在叠片体100的左右两侧，所述侧板400上设有多个侧板安装孔430和侧板卡槽440，侧板安装孔430与支架安装孔213和支架安装孔324同轴设置，侧板卡槽440与中间卡扣325相适配；The side plates 400 are provided on the left and right sides of the laminated body 100. The side plates 400 are provided with a plurality of side plate mounting holes 430 and side plate clamping slots 440, side plate mounting holes 430 and bracket mounting holes 213 It is arranged coaxially with the bracket mounting hole 324, and the side plate slot 440 is matched with the middle buckle 325;
顶板500，顶板500设在所述多个堆叠体110的前后两侧，顶板500上分布设有多个顶板安装孔510，顶板安装孔510与中部安装孔216相适配。The top plate 500 is provided on the front and rear sides of the plurality of stacked bodies 110, and a plurality of top plate mounting holes 510 are distributed on the top plate 500, and the top plate mounting holes 510 are matched with the middle mounting holes 216.
根据本公开实施例的电池模块中，每个堆叠体中包括多个软包电芯，各个软包电芯中的正极耳汇集形成正极连接部，负极耳汇集形成负极连接部。一个堆叠体通过正极连接部和与其相邻的另一个堆叠体的负极连接部串联连接，或者一个堆叠体通过负极连接部和与其相邻的另一个堆叠体的正极连接部串联连接。In the battery module according to the embodiment of the present disclosure, each stack includes a plurality of soft-packed battery cells, and the positive ears in each soft-packed battery core gather to form a positive connection part, and the negative ears gather to form a negative connection part. One stacked body is connected in series by a positive electrode connection portion and a negative electrode connection portion of another stacked body adjacent thereto, or one stacked body is connected in series by a negative electrode connection portion and a positive electrode connection portion of another stacked body adjacent thereto.
相邻的两个堆叠体之间左右各设置一个中间支架，位于两端的堆叠体的正极连接部或负极连接部设有末端支架。末端支架上具有第一定位结构，该第一定位结构的两侧分别设有侧部导向槽、侧部导向柱、侧部卡扣和支架安装孔，由此，并排相邻的两个叠片体可以通过侧部导向槽和侧部导向柱安装固定，并通过并排相邻的两个末端支架上的侧部卡扣相互卡接来进一步提高安装稳定性；相邻的两个所述堆叠体之间左右各设置一个中间支架，两个中间支架的按照上下相反的方向设置，由此，一个中间支架上的前部导向柱可以与另一中间支架上的前部导向槽适配安装，实现一个叠片体中相邻两堆叠体的固定；并排相邻 的两个叠片体可以通过侧部导向槽和侧部导向柱安装固定，并通过并排相邻的两个中间支架上的中间卡扣相互卡接来进一步提高安装稳定性；位于电池模块两侧的叠片体，则可以利用支架安装孔和侧板安装孔通过螺钉来安装侧板。另外，在叠片体生产阶段，可在将多个软包电芯堆叠为堆叠体后，先安装末端支架和中间支架，使各个软包电芯的极耳伸出极耳伸出槽，然后再对各个极耳进行连接。从而，末端支架和中间支架可以在极耳弯折时起到限位和支撑极耳辊压工装的作用。侧板上的各个侧板安装孔分别与末端支架和中间支架上的支架安装孔适配，可通过螺钉连接，各个侧板卡槽分别与中间支架上的中间卡扣(或侧部卡扣)卡接，进一步提高安装的稳定性。A middle bracket is arranged on the left and right sides of the two adjacent stacked bodies, and the positive connecting part or the negative connecting part of the stacked bodies at both ends are provided with end brackets. The end bracket is provided with a first positioning structure. The two sides of the first positioning structure are respectively provided with side guide grooves, side guide posts, side buckles and bracket mounting holes, so that two adjacent laminations are arranged side by side The body can be installed and fixed by the side guide groove and the side guide post, and the installation stability is further improved by the side buckles on the two adjacent end brackets side by side; the two adjacent stacked bodies A middle bracket is arranged between the left and right sides, and the two middle brackets are arranged in the opposite direction from top to bottom. Therefore, the front guide post on one middle bracket can be fitted and installed with the front guide groove on the other middle bracket to achieve Fixation of two adjacent stacked bodies in a laminated body; two adjacent laminated bodies side by side can be installed and fixed by side guide grooves and side guide posts, and through the middle clips on the two adjacent middle brackets side by side The buckles are snapped to each other to further improve the installation stability; the laminated body located on both sides of the battery module can use the bracket mounting holes and the side plate mounting holes to install the side plates with screws. In addition, in the production stage of the laminated body, after stacking multiple soft-pack batteries into a stacked body, the end bracket and the middle bracket can be installed first, so that the tabs of each soft-packed cell extend out of the tab extension slot, and then Then connect each tab. Therefore, the end bracket and the middle bracket can play the role of limiting and supporting the tab rolling tool when the tab is bent. Each side plate mounting hole on the side plate is adapted to the bracket mounting hole on the end bracket and the middle bracket, and can be connected by screws, and each side plate slot is respectively connected with the middle buckle (or side buckle) on the middle bracket Click to further improve the stability of installation.
由此，该电池模块中的单体软包电芯并联，串联极耳直接连接，实现了各个堆叠体模块之间的级联。从而，减少了堆叠体之间的串并联铜排以及外部安装结构，减少模块成组附件，降低成本和重量，提高空间利用率，进而可以在电池包能容纳更多的极组，提升车辆续航里程。同时，该折叠电池组减少了模块之间外部动力连接件的使用，避免模组之间螺栓连接，无需考虑动力连接件的连接稳定性及可靠性，降低了连接内阻，进而减少了动力电池包在使用中的内耗。As a result, the single soft-packed cells in the battery module are connected in parallel, and the series tabs are directly connected, thereby realizing the cascade connection between the various stacked modules. Therefore, the series and parallel copper bars between the stacks and the external installation structure are reduced, the module grouping accessories are reduced, the cost and weight are reduced, the space utilization rate is improved, and more pole groups can be accommodated in the battery pack, and the vehicle endurance can be improved. mileage. At the same time, the folding battery pack reduces the use of external power connectors between modules, avoids bolt connections between modules, does not need to consider the connection stability and reliability of power connectors, reduces the internal resistance of the connection, and thus reduces the power battery The internal friction of the package in use.
下面进一步对根据本公开实施例的电池模块进行详细描述。The battery module according to the embodiment of the present disclosure will be further described in detail below.
在本公开的电池模块中，采用本领域常见的软包电芯。参考图5，软包电芯111包括正极耳111a负极耳111b。软包电芯111外部还包裹有封装结构，例如铝塑膜等。In the battery module of the present disclosure, a soft-packed battery cell commonly used in the art is used. Referring to FIG. 5, the soft-packed battery cell 111 includes a positive lug 111a and a negative lug 111b. A packaging structure, such as aluminum plastic film, is also wrapped around the soft-pack battery core 111.
根据本公开的一些实施例，各软包电芯中的极耳可通过超声焊接、激光焊接、氩弧焊接等方式连接形成正极连接部或负极连接部。According to some embodiments of the present disclosure, the tabs in each soft-packed battery cell may be connected to form a positive electrode connection part or a negative electrode connection part by means of ultrasonic welding, laser welding, argon arc welding, or the like.
参考图2，根据本公开的一些实施例，一个叠片体中的堆叠体个数至少包括两个，即两个位于端部的堆叠体，位于叠片体中间的堆叠体个数没有特别限制，可以根据实际需要设置为0个、1个、2个、3个等。例如，图3和4示出的叠片体中包括两个位于端部的堆叠体(110a和110c)和一个位于中间的堆叠体(110b)。图6～10具体示出了叠片体中各堆叠体以及其上安装的末端支架和/或中间支架的结构示意图。2, according to some embodiments of the present disclosure, the number of stacked bodies in a laminated body includes at least two, that is, two stacked bodies at the ends, and the number of stacked bodies in the middle of the laminated body is not particularly limited. , Can be set to 0, 1, 2, 3, etc. according to actual needs. For example, the laminated body shown in FIGS. 3 and 4 includes two stacked bodies (110a and 110c) at the ends and a stacked body (110b) at the middle. 6 to 10 specifically show the structural schematic diagrams of each stack in the laminated body and the end bracket and/or the middle bracket installed on it.
参考图6和7，末端支架200的两端分别设有一个第一定位结构210、中部设有极耳伸出槽220；第一定位结构210包括侧部导向柱211、侧部导向槽212、支架安装孔213和侧部卡扣214、侧部卡槽215，侧部导向柱211和侧部导向槽212分别位于第一定位结构210的两侧，且相互适配；侧部卡扣214和侧部卡槽215分别位于第一定位结构210的两侧，且相互适配。由此，并排相邻的两个叠片体可以通过侧部导向槽和侧部导向柱安装固定。支架213用于安装侧板400。6 and 7, both ends of the end bracket 200 are respectively provided with a first positioning structure 210, the middle is provided with a lug extension groove 220; the first positioning structure 210 includes a side guide post 211, a side guide groove 212, The bracket mounting hole 213, the side buckle 214, the side buckle 215, the side guide post 211 and the side guide groove 212 are respectively located on both sides of the first positioning structure 210, and are adapted to each other; the side buckles 214 and The side grooves 215 are respectively located on two sides of the first positioning structure 210 and are adapted to each other. Therefore, two laminated bodies adjacent to each other can be installed and fixed by the side guide groove and the side guide post. The bracket 213 is used to install the side plate 400.
参考图8和9，中间支架300的一端设有前部导向柱310，另一端设有一个第二定位结构320，中部设有极耳伸出槽330；第二定位结构320包括前部导向槽321、侧部导向柱322、侧部导向槽323、支架安装孔324和中间卡扣325，侧部导向柱322和侧部导向槽323分别位于所述第二定位结构的两侧，且相互适配；前部导向槽321与前部导向柱310相适配。由此，一个中间支架上的前部导向柱可以与另一中间支架上的前部导向槽适配安装，实现一个叠片体中相邻两堆叠体的固定。支架安装孔324用于安装侧板400。另外，并排相邻的两个叠片体之间，位置对应的两个中间卡扣325可以相互卡接，从而进一步提高结构的稳定性。8 and 9, the middle bracket 300 is provided with a front guide post 310 at one end, a second positioning structure 320 is provided at the other end, and a tab protrusion groove 330 is provided in the middle; the second positioning structure 320 includes a front guide groove 321, the side guide post 322, the side guide groove 323, the bracket mounting hole 324 and the middle buckle 325, the side guide post 322 and the side guide groove 323 are respectively located on both sides of the second positioning structure, and are compatible with each other Match; The front guide groove 321 is matched with the front guide post 310. Thereby, the front guide post on one middle bracket can be fitted and installed with the front guide groove on the other middle bracket, so as to realize the fixation of two adjacent stacked bodies in one laminated body. The bracket mounting hole 324 is used for mounting the side plate 400. In addition, between the two adjacent laminated bodies side by side, the two middle buckles 325 with corresponding positions can be clamped to each other, thereby further improving the stability of the structure.
另外，根据本公开的一些实施例，中间支架300上所采用的前部导向柱310侧部导向柱322也可以设置为卡扣结构，从而进一步提高侧部导向柱322与侧部导向槽323的连接稳定性。In addition, according to some embodiments of the present disclosure, the front guide post 310 and the side guide post 322 used on the middle bracket 300 can also be configured as a snap structure, thereby further improving the relationship between the side guide post 322 and the side guide groove 323. Connection stability.
根据本公开的一些实施例，在每个末端支架和中间支架中，极耳伸出槽的个数和与其安装的堆叠体中软包电芯的个数相同，从而保证各个软包电芯的极耳都可以从极耳伸出槽中有导向地伸出，再连接形成正极连接部或负极连接部。另外，采用与软包电芯相同个数的极耳伸出槽，还可以避免各个极耳焊接过程中焊渣飞入电芯内部。According to some embodiments of the present disclosure, in each of the end bracket and the middle bracket, the number of tab protruding grooves is the same as the number of soft-packed cells in the stack to which it is installed, so as to ensure the poles of each soft-packed cell. The ears can be guided to extend from the tab extension groove, and then connect to form a positive connection part or a negative connection part. In addition, the use of the same number of tab extension slots as the soft-clad cell can also prevent welding slag from flying into the cell during the welding process of each tab.
根据本公开的一些实施例，侧板材质可以为金属或者塑料，金属例如可以为铝、铜、铁及其合金材料等。塑料优选为高强度的热固性塑料，如SMC(片状模塑料)。侧板采用金属材质时，可采用冲压等工艺成型，采用塑料材质时，可采用模具注塑等工艺成型。According to some embodiments of the present disclosure, the material of the side plate may be metal or plastic, and the metal may be, for example, aluminum, copper, iron, and alloy materials thereof. The plastic is preferably a high-strength thermosetting plastic, such as SMC (sheet molding compound). When the side plate is made of metal, it can be formed by stamping and other processes, and when it is made of plastic material, it can be formed by mold injection and other processes.
末端支架、中间支架可以为堆叠体中各软包电芯并联得到极耳进行保护。根据本公开的一些实施例，上述末端支架、中间支架为绝缘阻燃材质，例如PP、ABS、PC、PA、PA66等。The end bracket and the middle bracket can be connected in parallel for each soft-packed battery cell in the stack to obtain tabs for protection. According to some embodiments of the present disclosure, the above-mentioned end brackets and intermediate brackets are made of insulating and flame-retardant materials, such as PP, ABS, PC, PA, PA66, and the like.
参考图11，根据本公开的一些实施例，侧板的两侧面分布设有多个竖直连接孔450。多个电池模块上下堆叠组装大型模组时，可通过竖直连接孔450利用螺钉或螺杆将多个电池模块连接。另外，参考图12，两个多个电池模块也可以并排组装大型模组。Referring to FIG. 11, according to some embodiments of the present disclosure, a plurality of vertical connection holes 450 are distributed on both sides of the side plate. When multiple battery modules are stacked up and down to assemble a large-scale module, the multiple battery modules can be connected by screws or screws through the vertical connection hole 450. In addition, referring to FIG. 12, two or more battery modules can also be assembled side by side to assemble a large module.
根据本公开的一些实施例，上述电池模块的长度不小于600mm。According to some embodiments of the present disclosure, the length of the aforementioned battery module is not less than 600 mm.
根据本公开的一些实施例，上述正极连接部和所述负极连接部之间通过激光焊接、超声波焊接或铆接串联连接。叠片体中各个堆叠体的极耳通过以上方式单独或者复合连接。According to some embodiments of the present disclosure, the above-mentioned positive electrode connection part and the negative electrode connection part are connected in series by laser welding, ultrasonic welding or riveting. The tabs of each stacked body in the laminated body are connected individually or in combination in the above manner.
参考图13，根据本公开的一些实施例，顶板500上设有多个顶板安装孔510，顶板安装孔510与末端支架200上的中部安装孔216相适配，且位置相对。由此，可通过顶板安装孔510和中部安装孔216，利用螺钉将顶板500与末端支架200安装固定。Referring to FIG. 13, according to some embodiments of the present disclosure, the top plate 500 is provided with a plurality of top plate mounting holes 510, and the top plate mounting holes 510 are matched with the middle mounting holes 216 on the end bracket 200 and are positioned oppositely. Therefore, the top plate 500 and the end bracket 200 can be installed and fixed with screws through the top plate mounting hole 510 and the middle mounting hole 216.
参考图14～20，本公开的电池模块中还可以设有缓冲泡棉绝缘板600。根据本公开的一些实施例，缓冲泡棉绝缘板600设在相连两个叠片体100之间，由此，利用缓冲泡棉绝缘板既可以为电池组初期组装提供固定的预紧力，也可以在电池组使用后期对电芯膨胀力进行吸收。14-20, the battery module of the present disclosure may also be provided with a buffer foam insulation board 600. According to some embodiments of the present disclosure, the buffer foam insulation board 600 is arranged between the two laminated bodies 100. Therefore, the buffer foam insulation board can not only provide a fixed pre-tightening force for the initial assembly of the battery pack, but also The expansion force of the battery cell can be absorbed in the later stage of the battery pack.
根据本公开的一些实施例，上述多层缓冲泡棉绝缘板的厚度可以为多层软包电芯总厚度的5～20％。由此，可以为电池组提供适宜的缓冲，且不会过多地增大电池模块的体积。According to some embodiments of the present disclosure, the thickness of the above-mentioned multi-layer buffer foam insulation board may be 5-20% of the total thickness of the multi-layer soft-packed cells. As a result, suitable buffering can be provided for the battery pack without excessively increasing the volume of the battery module.
缓冲泡棉绝缘板600的结构如图16所示，缓冲泡棉绝缘板600上还设置有多个避让孔610，避让孔610的位置与支架安装孔213、支架安装孔324中间卡扣325的位置对应，且孔径稍大于以上结构，不会影响两叠片体之间的安装。根据本公开的一些实施例，缓冲泡棉绝缘板600可以采用PU、EVA等缓冲绝缘材质。The structure of the buffer foam insulation board 600 is shown in Figure 16. The buffer foam insulation board 600 is also provided with a plurality of escape holes 610. The position is corresponding, and the aperture is slightly larger than the above structure, which will not affect the installation between the two laminated bodies. According to some embodiments of the present disclosure, the cushion foam insulation board 600 may be made of cushion insulation materials such as PU and EVA.
根据本公开的一些实施例，在本公开的电池模块中，堆叠体中的各个软包电芯之间、叠片体与侧板之间、叠片体与顶板之间、缓冲泡棉绝缘板和叠片体之间都可以进一步采用结构胶粘接，结构胶的厚度可以为0.05～0.2mm，例如0.05mm、0.1mm、0.15mm、0.2mm等。由此，可以进一步提高各构件之间的结构稳定性。According to some embodiments of the present disclosure, in the battery module of the present disclosure, between each soft-packed battery cell in the stacked body, between the laminated body and the side plate, between the laminated body and the top plate, and buffer foam insulation board The structural adhesive can be further used for bonding between the laminated body and the laminated body, and the thickness of the structural adhesive can be 0.05-0.2mm, for example, 0.05mm, 0.1mm, 0.15mm, 0.2mm, etc. As a result, the structural stability between the components can be further improved.
综上可知，根据本公开实施例的折叠电池组具有下列优点的至少之一：In summary, the folding battery pack according to the embodiments of the present disclosure has at least one of the following advantages:
1、电池模块内部连接，没有铜排、铝排等导电的附加结构，成本低，连接快速；1. The internal connection of the battery module has no additional conductive structures such as copper bars and aluminum bars, so the cost is low and the connection is fast;
2、堆叠体中各软包电芯先并联，然后堆叠体之间再串联组成叠片体，各个叠片体之间再串联，从而减少了组装的零部件数量；2. The soft-packed cells in the stacked body are connected in parallel, and then the stacked bodies are connected in series to form a laminated body, and each laminated body is connected in series, thereby reducing the number of assembled parts;
3、叠片体之间通过末端保护壳和中间保护壳侧面的侧部导向槽和侧部导向柱连接，可根据实际电量要求，将多个叠片体组合安装，方便快速；同时采用卡扣卡接，连接稳定性更高。3. The laminated bodies are connected by the side guide grooves and the side guide posts on the side of the end protective shell and the middle protective shell. According to the actual power requirements, multiple laminated bodies can be combined and installed, which is convenient and fast; at the same time, buckles are used. Card connection, higher connection stability.
4、叠片体内的多个堆叠体通过中间保护壳的前部导向柱和前部导向柱连接，安装快速且稳定。4. The multiple stacks in the laminated body are connected by the front guide post and the front guide post of the middle protective shell, so the installation is fast and stable.
5、相比于传统模组每个模块都需四个螺栓固定和连接的传统电池模组，减少的每个模块固定螺栓和次数，大大提高生产效率；5. Compared with the traditional battery module in which each module needs four bolts to fix and connect, the number of fixing bolts and the number of fixing bolts for each module is reduced, which greatly improves the production efficiency;
6、相比于需四个螺栓固定的传统电池模组，相同数量的电芯的叠片体之间不需要预留用于安装、模组膨胀、外部连接的空间，能够大幅度提高叠片组在电池***中的体积利用率；6. Compared with the traditional battery module that requires four bolts to fix, there is no need to reserve space for installation, module expansion, and external connection between the laminated bodies of the same number of cells, which can greatly increase the laminated body. The volume utilization rate of the group in the battery system;
7、叠片体与侧板、顶板之间通过结构胶粘接和螺钉固定，连接可靠性更高。7. The laminated body and the side plate and the top plate are fixed by structural adhesive bonding and screws, and the connection reliability is higher.
在本公开的另一方面，本公开提出了一种电池包。根据本公开的实施例，该电池包包 括：上述实施例的电池模块。由此，该电池包具有前文针对电池模组所描述的全部特征和优点，在此不再一一赘述。总得来说，该电池包具有更低的成本和重量、更高的空间利用率和可靠性等优点。In another aspect of the present disclosure, the present disclosure proposes a battery pack. According to an embodiment of the present disclosure, the battery pack includes: the battery module of the above-mentioned embodiment. Therefore, the battery pack has all the features and advantages described above for the battery module, which will not be repeated here. In general, the battery pack has the advantages of lower cost and weight, higher space utilization and reliability.
在本公开的再一方面，本公开提出了一种车辆。根据本公开的实施例，该车辆包括上述实施例的电池模块或上述实施例的电池包。由此，该车辆具有前文针对电池模组或电池包所描述的全部特征和优点，在此不再一一赘述。总得来说，该车辆具有更佳的可靠性和续航里程。In another aspect of the present disclosure, the present disclosure proposes a vehicle. According to an embodiment of the present disclosure, the vehicle includes the battery module of the above-mentioned embodiment or the battery pack of the above-mentioned embodiment. Therefore, the vehicle has all the features and advantages described above for the battery module or battery pack, and will not be repeated here. In general, the vehicle has better reliability and cruising range.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , Structures, materials, or characteristics are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can comment on the foregoing within the scope of the present disclosure. The embodiment undergoes changes, modifications, substitutions, and modifications.

Claims (10)

  1. 一种电池模块，其中，包括：A battery module, which includes:
    叠片体，所述叠片体包括多个堆叠体，每个所述堆叠体由多个软包电芯堆叠而成；在一个所述堆叠体中，各个所述软包电芯的正极耳连接形成正极连接部，各个所述软包电芯的负极耳连接形成负极连接部，所述堆叠体通过正极连接部/负极连接部和与其相邻的另一个所述堆叠体的负极连接部/正极连接部串联连接；A laminated body, the laminated body includes a plurality of stacked bodies, and each of the stacked bodies is formed by stacking a plurality of soft-packed batteries; in one of the stacked bodies, the positive ears of each of the soft-packed batteries Are connected to form a positive electrode connection part, the negative electrode tabs of each of the soft-packed batteries are connected to form a negative electrode connection part, and the stacked body passes through the positive electrode connection part/negative electrode connection part and the negative electrode connection part of another adjacent stacked body/ The positive connection part is connected in series;
    末端支架，所述末端支架设在位于两端的所述堆叠体的正极连接部或负极连接部；所述末端支架的两端分别设有一个第一定位结构、中部设有极耳伸出槽；所述第一定位结构包括侧部导向柱、侧部导向槽、侧部卡扣、侧部卡槽、支架安装孔和中部安装孔，所述侧部导向柱和所述侧部导向槽分别位于所述第一定位结构的两侧，且相互适配；所述侧部卡扣和所述侧部卡槽分别位于所述第一定位结构的两侧，且相互适配；An end support, the end support is arranged at the positive connection part or the negative connection part of the stack at both ends; the two ends of the end support are respectively provided with a first positioning structure, and the middle part is provided with a tab extension groove; The first positioning structure includes a side guide post, a side guide groove, a side buckle, a side catch groove, a bracket mounting hole, and a middle mounting hole. The side guide post and the side guide groove are respectively located The two sides of the first positioning structure are adapted to each other; the side buckle and the side snap groove are respectively located on both sides of the first positioning structure and are adapted to each other;
    中间支架，所述中间支架设在相邻的两个所述堆叠体之间，且相邻的两个所述堆叠体之间左右各设置一个所述中间支架；所述中间支架的一端设有前部导向柱，另一端设有一个第二定位结构，中部设有极耳伸出槽；所述第二定位结构包括前部导向槽、侧部导向柱、侧部导向槽、中间卡扣和支架安装孔，所述侧部导向柱和所述侧部导向槽分别位于所述第二定位结构的两侧，且相互适配；所述前部导向槽与所述前部导向柱相适配；An intermediate support, the intermediate support is arranged between two adjacent stacked bodies, and one of the intermediate supports is arranged on the left and right sides of the adjacent two stacked bodies; one end of the intermediate support is provided with The other end of the front guide column is provided with a second positioning structure, and the middle part is provided with a lug extension groove; the second positioning structure includes a front guide groove, a side guide column, a side guide groove, a middle buckle and Bracket mounting holes, the side guide posts and the side guide grooves are respectively located on both sides of the second positioning structure, and are adapted to each other; the front guide groove is adapted to the front guide post ；
    侧板，所述侧板设在所述叠片体的左右两侧，所述侧板上设有多个侧板安装孔和侧板卡槽，所述侧板安装孔与所述支架安装孔同轴设置，所述侧板卡槽与所述中间卡扣相适配；Side plate, the side plate is arranged on the left and right sides of the laminated body, the side plate is provided with a plurality of side plate mounting holes and side plate clamping grooves, the side plate mounting hole and the bracket mounting hole Coaxially arranged, the side plate slot is adapted to the middle buckle;
    顶板，所述顶板设在所述多个堆叠体的前后两侧，所述顶板上分布设有多个顶板安装孔，所述顶板安装孔与所述中部安装孔相适配。A top plate, the top plate is arranged on the front and back sides of the plurality of stacked bodies, a plurality of top plate mounting holes are distributed on the top plate, and the top plate mounting holes are matched with the middle mounting holes.
  2. 根据权利要求1所述的电池模块，其中，所述堆叠体中，各个所述软包电芯通过结构胶粘接。The battery module according to claim 1, wherein, in the stacked body, each of the soft-packed cells is bonded by a structural glue.
  3. 根据权利要求1或2所述的电池模块，其中，所述结构胶的厚度为0.05～0.2mm。The battery module according to claim 1 or 2, wherein the thickness of the structural adhesive is 0.05 to 0.2 mm.
  4. 根据权利要求1～3中任一项所述的电池模块，其中，所述末端支架和所述中间支架为绝缘阻燃材质。The battery module according to any one of claims 1 to 3, wherein the end bracket and the intermediate bracket are made of insulating and flame-retardant materials.
  5. 根据权利要求1～4中任一项所述的电池模块，其中，所述绝缘阻燃材质选自PP、ABS、PC、PA、PA66中的至少之一。The battery module according to any one of claims 1 to 4, wherein the insulating and flame-retardant material is selected from at least one of PP, ABS, PC, PA, and PA66.
  6. 根据权利要求1～5中任一项所述的电池模块，其中，所述侧板的两侧面分布设有多个竖直连接孔。The battery module according to any one of claims 1 to 5, wherein a plurality of vertical connection holes are distributed on both sides of the side plate.
  7. 根据权利要求1～6中任一项所述的电池模块，其中，所述电池模块的长度不小于600mm。The battery module according to any one of claims 1 to 6, wherein the length of the battery module is not less than 600 mm.
  8. 根据权利要求1～7中任一项所述的电池模块，其中，所述正极连接部和所述负极连接部之间通过激光焊接、超声波焊接或铆接串联连接。The battery module according to any one of claims 1 to 7, wherein the positive electrode connection portion and the negative electrode connection portion are connected in series by laser welding, ultrasonic welding, or riveting.
  9. 一种电池包，其中，包括：权利要求1～8中任一项所述的电池模块。A battery pack, comprising: the battery module according to any one of claims 1 to 8.
  10. 一种车辆，其中，包括：权利要求1～8中任一项所述的电池模块或权利要求9所述的电池包。A vehicle comprising: the battery module according to any one of claims 1 to 8 or the battery pack according to claim 9.
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CN115275481A (en) * 2022-07-01 2022-11-01 力神（青岛）新能源有限公司 Battery system
CN115275481B (en) * 2022-07-01 2023-09-05 力神（青岛）新能源有限公司 Battery system
CN115084770A (en) * 2022-07-20 2022-09-20 天津市捷威动力工业有限公司 Combined battery module middle fixing device and battery module
CN115084770B (en) * 2022-07-20 2023-07-07 天津市捷威动力工业有限公司 Combined type battery module middle fixing device and battery module
CN115498368A (en) * 2022-09-20 2022-12-20 天津市捷威动力工业有限公司 Battery cell connecting structure and connecting method thereof, battery cell unit and battery module
CN115498368B (en) * 2022-09-20 2023-07-07 天津市捷威动力工业有限公司 Battery cell connection structure, connection method thereof, battery cell unit and battery module

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