WO2018176296A1 - Cadre de fixation, module de batterie et bloc-batterie - Google Patents

Cadre de fixation, module de batterie et bloc-batterie Download PDF

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Publication number
WO2018176296A1
WO2018176296A1 PCT/CN2017/078699 CN2017078699W WO2018176296A1 WO 2018176296 A1 WO2018176296 A1 WO 2018176296A1 CN 2017078699 W CN2017078699 W CN 2017078699W WO 2018176296 A1 WO2018176296 A1 WO 2018176296A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat conducting
holder
conducting plates
frame
bulge
Prior art date
Application number
PCT/CN2017/078699
Other languages
English (en)
Chinese (zh)
Inventor
张上富
黄银成
蔡锦榕
项延火
Original Assignee
宁德时代新能源科技股份有限公司
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
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2017/078699 priority Critical patent/WO2018176296A1/fr
Publication of WO2018176296A1 publication Critical patent/WO2018176296A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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
    • 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 invention relates to the field of batteries, and in particular, to a mounting bracket, a battery module, and a battery pack.
  • the compressible elastic material is difficult to select.
  • the compressible elastic material used to solve the expansion of the battery pack needs to meet the following requirements: 1
  • the early elastic modulus is large, and the late elastic modulus is small.
  • the early elastic modulus can be used for a large amount.
  • Solve the requirements of the initial preload of the battery pack, and the small elastic modulus at the later stage can provide sufficient space for the expansion of the soft pack secondary battery; 2 due to the limitation of the size of the battery pack and the size of the soft pack secondary battery,
  • the space of the compressed elastic material tends to be different, which requires that the compressible elastic material used has a variety of different thicknesses to choose from; 3 should meet the requirements of heat insulation and insulation.
  • the compressible elastic materials currently on the market generally cannot meet the above requirements at the same time, and the selection of compressible elastic materials is extremely difficult.
  • the production cost of the battery pack is relatively high.
  • the compressible elastic materials available are HT800/HT870/BF1000, etc. These compressible elastic materials are expensive in terms of price, and in addition, it is necessary to increase the inefficiency in the production of battery packs.
  • the compressible elastomeric attachment process results in a higher overall cost of the battery pack.
  • the tolerance of the above-mentioned compressible elastic material is generally ⁇ 0.5 mm, and the compressible elastic material generates bubbles and wrinkles during the attaching process, thereby reducing the assembly dimensional accuracy of the entire battery pack, thereby reducing the finality.
  • an object of the present invention is to provide a holder, a battery module, and a battery pack that can solve the secondary electricity in the battery pack without using a compressible elastic material.
  • the expansion force problem of the pool eliminates the problems of difficult material selection, high cost, many processes, and poor precision due to the use of compressible elastic materials.
  • the present invention provides a fixing frame comprising: a frame body having an enclosed inner space; and at least one heat conducting plate fixed to the frame body and dividing the inner space of the frame body Two accommodating portions having openings on opposite sides of the thickness direction of the frame are formed together with the frame.
  • the side surface of the corresponding heat transfer plate constituting each of the accommodating portions is formed in a bulge that is located in each of the accommodating portions and that bulges toward the opening of each accommodating portion in the thickness direction of the casing.
  • the present invention provides a battery module including two secondary batteries.
  • the battery module further includes the fixing frame according to the first aspect of the present invention.
  • Each of the secondary batteries is received in a corresponding receiving portion and fixed to one side of the corresponding heat conducting plate and contacts the corresponding bulge.
  • the present invention provides a battery pack comprising a plurality of battery modules according to the second aspect of the present invention arranged side by side.
  • the advantageous effects of the present invention are as follows: due to the arrangement of the bulge, when the holder is used for the battery module and further for the battery pack, the expansion of the secondary battery can be effectively buffered, thereby eliminating the need for a compressible elastic material and eliminating The problem of difficult material selection, high cost, many processes, and poor precision due to the use of compressible elastic materials.
  • FIG. 1 is an exploded perspective view of a battery pack in accordance with the present invention, in which a battery module is separated from the remaining battery modules for clarity.
  • FIG. 2 is an assembled perspective view of an embodiment of a mounting bracket in accordance with the present invention.
  • Figure 3 is a partial cross-sectional view of Figure 2 .
  • Figure 4 is an exploded view of Figure 2.
  • Figure 5 is an exploded view of another angle of Figure 2.
  • Figure 6 is an exploded view of an embodiment of a battery module in accordance with the present invention in which the holder of Figure 2 is employed.
  • Figure 7 is an assembled perspective view of another embodiment of a holder in accordance with the present invention.
  • Figure 8 is a partial cross-sectional view of Figure 7.
  • Figure 9 is an exploded view of Figure 7.
  • Figure 10 is an exploded view of another angle of Figure 7.
  • FIG 11 is an exploded view of another embodiment of a battery module in accordance with the present invention in which the holder of Figure 7 is employed.
  • Figure 12 is an assembled perspective view of still another embodiment of a holder in accordance with the present invention.
  • Figure 13 is a partial cross-sectional view of Figure 12 .
  • Figure 14 is an exploded view of Figure 12 .
  • Figure 15 is an exploded view of another angle of Figure 12 .
  • Figure 16 is an exploded view of still another embodiment of a battery module in accordance with the present invention in which the holder of Figure 12 is employed.
  • Figure 17 is a partial perspective view of an embodiment of a mounting bracket in accordance with the present invention.
  • Figure 18 is a partial perspective view of another embodiment of a holder in accordance with the present invention.
  • Figure 19 is a partial perspective view of still another embodiment of a holder in accordance with the present invention.
  • Figure 20 is a partial perspective view of yet another embodiment of a holder in accordance with the present invention.
  • the fixing frame 62 comprises: a frame body 621 having an enclosed inner space 6211; and at least one heat conducting plate 622 fixed.
  • the housing 621 divides the internal space 6211 of the housing 621 to form two housing portions 623 having openings 6231 on opposite sides of the housing 621 in the thickness direction.
  • the side surface 6221 of the corresponding heat transfer plate 622 constituting each of the accommodating portions 623 is formed in a bulge 6222 that is located in each of the accommodating portions 623 and that bulges in the thickness direction of the housing 621 toward the opening 6231 of each accommodating portion 623.
  • the bulge 6222 refers to a shape integrally formed by the corresponding heat conducting plate 622 from one side of the corresponding heat conducting plate 622 and convex on the opposite side surface, thereby being recessed. A portion of the buffer space for expansion of the secondary battery 61 will be formed, thereby solving the problem of the expansion force of the secondary battery 61 in the battery pack P.
  • the bulge 6222 will be crushed (for example, elastically deformed or even plastically deformed) by the pressure generated by the expansion of the secondary battery 61, preferably in accordance with the material selection of the heat conducting plate 622, using elasticity. Deformation.
  • plastic deformation is also possible within the requirements of satisfying the buffer expansion.
  • the fixing frame 62 due to the arrangement of the bulge 6222, when the fixing frame 62 is used for the battery module 6 and further used for the battery pack P, the expansion of the secondary battery can be effectively buffered, thereby eliminating the need for
  • the compressed elastic material eliminates the problems of difficult material selection, high cost, many processes, and poor precision due to the use of compressible elastic materials.
  • the elasticity of the drum pack 6222 can provide the secondary battery 61 with the initial preload force when the battery pack P is assembled.
  • the number of the heat conducting plates 622 is not limited. Specifically, regardless of the number of the heat conducting plates 622, the side faces 6221 of the heat conducting plates 622 constituting the two receiving portions 623 are only two. The two side faces 6221 may belong to the same heat conducting plate 622, or belong to two heat conducting plates 622, respectively, or belong to the outermost two heat conducting plates 622 of the plurality of heat conducting plates 622.
  • the heat conducting plates 622 are disposed in two, the thickness of each of the two heat conducting plates 622 can be thinned, so that the two heat conducting plates 622 are reduced, with only one heat conducting plate 622 being used.
  • the strength and corresponding bulge 6222 are easily deformed, and the bulging space for each bulge 6222 for expansion is increased as compared to the case where only one heat conducting plate 622 is used.
  • the heat conducting plate 622 is one, and the two side surfaces 6221 of the heat conducting plate 622 are respectively configured to form two receiving portions 623 on the two sides 6221 of the heat conducting plate 622.
  • the drum packs 6222 are alternately arranged.
  • the bulge 6222 on each side surface 6221 of the heat conducting plate 622 covers the range of the heat conducting plate 622 within the frame 621 to provide as much buffering as possible for the expansion of the secondary battery 61.
  • the bulwarls 6222 on the side faces 6221 of the corresponding heat conducting plates 622 constituting the respective receiving portions 623 may be arranged in an array as shown in FIGS. 4 and 5.
  • the tops of the bulge 6222 on each side 6221 of the heat conducting plate 622 are in the same plane.
  • each heat conducting plate 622 there are two heat conducting plates 622 , and only one side surface 6221 of each heat conducting plate 622 is used to form a receiving portion 623 .
  • the number of the drum packs 6222 of the heat conducting plates 622 can be determined according to actual conditions.
  • the bulge 6222 of each of the heat conducting plates 622 is one and is centrally disposed within the range of the heat conducting plates 622 within the frame 621.
  • the peripheral edge of the bulge 6222 of each of the heat transfer plates 622 is close to the inner circumference of the frame 621.
  • the bulge packs 6222 of the two heat conducting plates 622 are aligned.
  • the opposing bulges 6222 of the two heat conducting plates 622 are mirror symmetrical.
  • the bulge packs 6222 of each of the thermally conductive plates 622 are multiple and arranged in an array.
  • the tops of the bulwarks 6222 of the heat conducting plates 622 are preferably in the same plane.
  • each drum bag 6222 can be circular (as shown in Figures 2, 4 and 5), elliptical (as shown in Figures 7, 9 and 10), rectangular ( Figure 12, Figure 14 and Figure 15). Shown) or stepped (not shown).
  • the present invention is not limited thereto, and each of the drum packs 6222 can be formed into various suitable shapes according to actual needs.
  • the thickness of the heat conducting plate 622 and the forming angle of the bulge 6222 ie, the angle between the side wall of the bulge 6222 and the side surface 6221 of the heat conducting plate 622) may be used.
  • the forming height and shape of the bulge bag 6222 are adjusted accordingly. The smaller the forming angle of the bulge bag 6222 and the higher the forming height, the better the elasticity of the bulge bag 6222, and the more advantageous the buffering of the expansion of the secondary battery 61 is.
  • each bulge 6222 is flat.
  • Each drum bag 6222 can be stamped and formed, so that the production efficiency of the heat conducting plate 622 can be greatly improved, and the existing stamping forming precision is much larger than the dimensional tolerance of the compressible elastic material (for example, silicone foam), thereby improving the battery pack.
  • the overall assembly dimensional accuracy of the P improves the dimensional accuracy of the outer contour of the final battery pack P.
  • Each of the heat conducting plates 622 can be a metal plate.
  • the metal plate can be, but is not limited to, an aluminum plate.
  • the precision of the aluminum plate stamping to form the bulge 6222 can reach ⁇ 0.05 mm, thereby improving the assembly dimensional accuracy of the battery pack P as a whole.
  • the dimensional accuracy of the outer contour of the final battery pack P is improved.
  • each of the heat transfer plates 622 has an exposed portion 6225 that is exposed outside the frame 621.
  • the exposed portion 6225 of each of the heat conducting plates 622 may be a straight plate shape (as shown in FIGS. 17 and 18), a corrugated plate shape (as shown in FIG. 19) or an arc plate shape (as shown in FIG. 20), and the latter two may be used. Increase the heat dissipation area.
  • the exposed portion 6225 of the heat transfer plate 622 is bent over the frame 621.
  • the heat conducting plates 622 are two. As shown in FIG. 8 and FIG. 13 , the exposed portions 6225 of the two heat conducting plates 622 are all located on the same side of the frame 621 and are bent back opposite to the frame 621 .
  • the frame body 621 may be plastic, and the peripheral portion of each heat conducting plate 622 is embedded in the plastic (for example, by insert molding).
  • the peripheral portion of each of the heat conducting plates 622 is provided with reinforcing ribs 6223, and the reinforcing ribs 6223 are embedded in the plastic. .
  • the reinforcing ribs 6223 can increase the local strength of the heat conducting plate 622 and improve the structural strength of the fixing frame 62.
  • each of the heat conducting plates 622 is provided with a positioning hole 6224, and the plastic filling positioning hole 6224 .
  • the strength and reliability of the integrally formed frame 621 and the heat conducting plate 622 of the plastic are greatly improved, and the heat conducting plate 622 is reliably connected with the frame 621 of the plastic through the positioning hole 6224, and the heat conducting plate 622 is firmly fixed.
  • the heat conducting plates 622 are two, and the peripheral portions of the two heat conducting plates 622 are fitted together, thereby improving the two heat conducting plates. The intensity of 622 at the peripheral portion.
  • the battery module 6 includes two secondary batteries 61.
  • the battery module 6 further includes a fixing bracket 62 according to the first aspect of the present invention.
  • Each of the secondary batteries 61 is received in a corresponding receiving portion 623 and fixed to one side of the corresponding heat conducting plate 622 and contacts the corresponding bulge 6222.
  • the battery module 6 further includes an adhesive material 63 , and each of the secondary batteries 61 is bonded and fixed to one side of the corresponding heat conducting plate 622 via an adhesive material 63 and indirectly via the bonding material 63 .
  • the bonding material 63 may be a double-sided tape. Of course, it can also be used Other suitable means (for example, fixing with a tape from the outside of the secondary battery 61) fix each secondary battery 61 and directly contact each secondary battery 61 with the corresponding bulge bag 6222.
  • the secondary battery 61 may be a flexible package battery.
  • the flexible packaging battery may be a lithium ion secondary battery, a sodium ion secondary battery, or a zinc ion secondary battery.
  • a battery pack P according to the present invention includes a plurality of side by side arrangements according to the present invention.
  • the battery pack P may further include: an outer frame 1 having a top plate 11 and two side plates 12 connected to the top plate 11 and surrounding upper and left and right sides of a plurality of battery modules 6 arranged side by side, and The exposed portion 6225 of the heat conducting plate 622 of each battery module 6 is at the opening of the metal outer frame 1; at least two elastic bodies 2, one side plate 12 and at least the outermost battery modules 6 arranged side by side are sandwiched at least An elastic body 2; a wire harness spacer assembly 3 disposed in front of a plurality of battery modules 6 arranged side by side and provided with a wire harness electrically connected to the secondary battery 61 of the plurality of battery modules 6; the inner front end plate 4A is located in the wire harness isolation The front side of the plate assembly 3 is disposed on the wire harness spacer assembly 3; the outer front end plate 4B is located in front of the inner front end plate 4A and is fixedly connected to the outer frame 1; the inner rear end plate 5A is located at a plurality of battery modules 6
  • outer rear end plate 5B is located behind the inner rear end plate 5A and fixedly connected to the outer frame 1, and the inner rear end plate 5A is clamped to the outer rear end plate 5B and the frame 621 of the plurality of battery modules 6. Between the back side.
  • the outer frame 1 is made of metal, which may be, but not limited to, stainless steel.
  • Each of the elastic bodies 2 may be a silica gel foam.
  • the inner front end plate 4A is made of plastic.
  • the outer front end plate 4B is made of metal, and the metal may be, but not limited to, stainless steel.
  • the inner rear end plate 5A is made of plastic.
  • the inner rear end plate 5A is made of metal, and the metal may be, but not limited to, stainless steel.
  • the outer front end plate 4B, the outer rear end plate 5B, and the outer frame 1 are fixedly joined together by laser penetration welding to provide the battery pack with sufficient strength against external impact.
  • the battery pack P further includes: a cooling device (not shown) that contacts the exposed portion 6225 of the heat conducting plate 622 of each of the battery modules 6. Thereby, the heat generated by the secondary battery 61 during the charge and discharge cycle can be radiated outward.

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

Abstract

La présente invention concerne un cadre de fixation, un module de batterie et un bloc-batterie. Le cadre de fixation comprend un corps de cadre comportant un espace interne entouré ; et au moins une plaque de conduction thermique fixée au corps de cadre et divisant l'espace interne du corps de cadre de sorte à former, conjointement avec le corps de cadre, deux parties de réception présentant des ouvertures au niveau de deux côtés en regard dans une direction d'épaisseur du corps de cadre. Les surfaces latérales de la plaque de conduction thermique correspondante, formant chacune des parties de réception, forment des saillies, chacune des saillies étant située dans des parties de réception respectives et faisant saillie vers les ouvertures des parties de réception respectives dans la direction de l'épaisseur du corps de cadre. Le module de batterie comprend deux accumulateurs et le cadre de fixation. Chacun des accumulateurs est reçu au niveau d'une partie de réception correspondante, fixé à un côté d'une plaque de conduction thermique correspondante, et vient en contact avec une saillie correspondante. Le bloc-batterie comprend une pluralité de modules de batterie disposés côte à côte. Ainsi, l'invention concerne un tampon efficace pour la dilatation des accumulateurs, et l'utilisation de matériaux élastiques compressibles n'est pas nécessaire, éliminant ainsi des problèmes tels que la difficulté du choix des matériaux, les coûts élevés, les multiples processus et la faible précision, qui résulte de l'utilisation de matériaux élastiques compressibles.
PCT/CN2017/078699 2017-03-30 2017-03-30 Cadre de fixation, module de batterie et bloc-batterie WO2018176296A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/078699 WO2018176296A1 (fr) 2017-03-30 2017-03-30 Cadre de fixation, module de batterie et bloc-batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/078699 WO2018176296A1 (fr) 2017-03-30 2017-03-30 Cadre de fixation, module de batterie et bloc-batterie

Publications (1)

Publication Number Publication Date
WO2018176296A1 true WO2018176296A1 (fr) 2018-10-04

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110289379A (zh) * 2019-06-06 2019-09-27 宁波利维能储能系统有限公司 一种软包电池模组及其制造方法
CN112526365A (zh) * 2020-11-26 2021-03-19 武汉飞恩微电子有限公司 电池状态检测的方法、设备、存储介质及装置
CN114388954A (zh) * 2020-10-16 2022-04-22 财团法人工业技术研究院 承载治具
US11563255B2 (en) * 2017-12-19 2023-01-24 Sanyo Electric Co., Ltd. Power supply device, and separator for power supply device
CN117039242A (zh) * 2023-08-08 2023-11-10 杭州重红科技有限公司 一种锂电池保护装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202092498U (zh) * 2011-05-11 2011-12-28 天通浙江精电科技有限公司 一种具有流线型整体强化换热板的换热器
CN202695676U (zh) * 2012-06-08 2013-01-23 上海通用汽车有限公司 车用动力电池
CN106328855A (zh) * 2016-11-29 2017-01-11 宁德时代新能源科技股份有限公司 电池组件及电池模组

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202092498U (zh) * 2011-05-11 2011-12-28 天通浙江精电科技有限公司 一种具有流线型整体强化换热板的换热器
CN202695676U (zh) * 2012-06-08 2013-01-23 上海通用汽车有限公司 车用动力电池
CN106328855A (zh) * 2016-11-29 2017-01-11 宁德时代新能源科技股份有限公司 电池组件及电池模组

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11563255B2 (en) * 2017-12-19 2023-01-24 Sanyo Electric Co., Ltd. Power supply device, and separator for power supply device
CN110289379A (zh) * 2019-06-06 2019-09-27 宁波利维能储能系统有限公司 一种软包电池模组及其制造方法
CN114388954A (zh) * 2020-10-16 2022-04-22 财团法人工业技术研究院 承载治具
CN112526365A (zh) * 2020-11-26 2021-03-19 武汉飞恩微电子有限公司 电池状态检测的方法、设备、存储介质及装置
CN117039242A (zh) * 2023-08-08 2023-11-10 杭州重红科技有限公司 一种锂电池保护装置

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