WO2022001168A1 - Structure de bloc-batterie - Google Patents

Structure de bloc-batterie Download PDF

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Publication number
WO2022001168A1
WO2022001168A1 PCT/CN2021/080110 CN2021080110W WO2022001168A1 WO 2022001168 A1 WO2022001168 A1 WO 2022001168A1 CN 2021080110 W CN2021080110 W CN 2021080110W WO 2022001168 A1 WO2022001168 A1 WO 2022001168A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
circuit board
battery
cell
electrical connector
Prior art date
Application number
PCT/CN2021/080110
Other languages
English (en)
Chinese (zh)
Inventor
柯亨钊
戴建红
Original Assignee
浙江动一新能源动力科技股份有限公司
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 浙江动一新能源动力科技股份有限公司 filed Critical 浙江动一新能源动力科技股份有限公司
Publication of WO2022001168A1 publication Critical patent/WO2022001168A1/fr

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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • 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 utility model relates to the technical field of battery packs, in particular to a battery pack structure.
  • Power tools have the characteristics of easy portability, simple operation and diverse functions, which can greatly reduce labor intensity, improve work efficiency, and realize mechanization of manual operation. Therefore, they are widely used in construction, housing decoration, automobiles, machinery, electricity, bridges, gardening and other fields. , and into the family in large numbers.
  • the question of whether the battery pack is suitable or not and whether the assembly is firm is very important for power tools.
  • the existing power tool battery pack installation devices are generally directly fixed on the power tool, so it is not convenient to At the same time, due to the large volume and complex structure of the battery pack, charging and discharging are not convenient enough to be used as a mobile power supply.
  • the utility model proposes a battery pack structure, which solves the problems of complex structure and large volume of the prior battery pack.
  • the present utility model provides a battery pack structure, which includes a casing, a battery cell and a circuit board arranged inside the casing, and the battery pack structure also includes a support skeleton, which is used for the battery core and the circuit board. installation positioning;
  • the support frame is respectively provided with a first bayonet and a second bayonet with respect to the positive and negative poles of the battery cell;
  • a first electrical connector which is arranged at the first bayonet and connects one end of the positive and negative electrodes of the cell to the circuit board;
  • a second electrical connector which is arranged at the second bayonet and connects the other ends of the positive and negative electrodes of the battery cells to the circuit board;
  • the third electrical connector is provided at one end of the circuit board, and the third electrical connector is configured to be electrically connected to the electrical device, so that the power from the cell can be supplied to the electrical device through the third electrical connector.
  • the battery pack further includes a fourth electrical connector arranged at one end of the circuit board, and the fourth electrical connector is configured to be connectable to a charging source, so that electric charges can be supplied to the battery cells through the fourth electrical connector.
  • the fourth electrical connector is suitable for bidirectional charging and discharging.
  • the circuit board is supported on the support frame at intervals.
  • the supporting frame is provided with a positioning groove at the position of the installation groove corresponding to the arc-shaped surface of the battery cell, and the first electrical connector and the second electrical connector are respectively connected to the two battery cells at the first bayonet and the second bayonet. After being bent and extended, it is connected to the circuit board through the support frame, and the bent extension section is positioned in the positioning groove.
  • the minimum distance between the circuit board and the supporting frame is H, and H ⁇ 2mm.
  • the two sides of the bottom of the support frame are provided with a number of protruding support blocks and snap-fit buckle plates, the support blocks are used to separate the circuit board from the support frame, and the snap-fit buckle plates are used to fasten the circuit board and the support frame. fixed.
  • the width of the circuit board is Y
  • the diameter of the cell is D
  • Y ⁇ 0.95D the width of the circuit board
  • the circuit board width Y is 20mm
  • the cell diameter D is 21mm.
  • the two ends of the circuit board in the length direction are respectively close to the positive and negative ends of the battery cell, and the two ends of the circuit board and the positive and negative ends of the battery core are respectively provided with distances L1 and L2; L1 ⁇ 5mm, L2 ⁇ 5mm.
  • the length of the cell is L3
  • the length of the battery pack is L4, and L4 ⁇ 1.3L3.
  • the length of the cell is 70mm, and the length of the battery pack is 82mm.
  • the diameter of the cell is D
  • the height of the battery pack is M
  • M ⁇ 1.8D the diameter of the cell
  • the diameter of the cell is 21mm
  • the height of the battery pack is 36mm.
  • a battery pack structure includes a casing, a battery cell and a circuit board arranged inside the casing, and the battery pack structure further includes a support frame, which is used for the installation and positioning of the battery cell and the circuit board;
  • the support frame is provided with installation slots along the axis of the cell, and limit plates are respectively provided on both sides of the terminals of the cell.
  • the installation slot corresponds to the arc surface of the cell, and the length of the installation slot is basically the same as the length of the cell. Consistent.
  • the side of the housing opposite to the installation slot is arc-shaped, the arc-shaped surface is adapted to the outer surface of the cell, and the arc-shaped surface is combined with the installation slot and the limit plate to form the cell positioning area.
  • the battery pack structure of the present invention adopts a single-cell battery pack structure design, so that the battery pack structure is simpler and the volume is more compact.
  • the volume of the entire battery pack is greatly reduced, making the battery pack applicable to a wider range, including not only cordless hand-held power tools, but also garden tools, cordless vacuum cleaners, DC air compressors, etc. Power operating equipment with batteries as a power source;
  • the internal structure of the battery pack such as the battery cell is tightly and reliably fixed and installed.
  • the arrangement of the two bayonet openings and the positioning groove realizes the fixing of the first electrical connector and the second electrical connector.
  • FIG. 1 is a perspective view of a battery pack structure of the present invention
  • FIG. 2 is an exploded view 1 of the battery pack structure of the present invention
  • FIG. 3 is an exploded view 2 of the battery pack structure of the present invention.
  • Fig. 4 is the structural diagram of the circuit board of the utility model
  • Fig. 5 is the sectional view of the utility model
  • Fig. 6 is the directional view of the utility model
  • Fig. 7 is the perspective view of the support frame of the present invention.
  • a battery pack according to an embodiment of the present invention includes a casing 1 , a battery cell 2 and a circuit board built into the casing 1 . 3. Also includes:
  • a first electrical connector 4 which connects one end of the positive and negative electrodes of the battery cell 2 to the circuit board 3;
  • the second electrical connector 5 connects the other ends of the positive and negative electrodes of the battery cell 2 with the circuit board 3;
  • the first electrical connector 4 and the second electrical connector 5 preferably use metal conductive nickel sheets.
  • the third electrical connector 6 is disposed on the circuit board 3 and includes at least one first interface 10 , and the first interface 10 is used for electrical connection with external electrical equipment, so that The power from the battery cell 2 can be provided to the electrical equipment through the third electrical connector;
  • the fourth electrical connector 7 is arranged on the circuit board 3 and includes at least one second interface 12, and the second interface 12 is used for connecting with the external
  • the electrical equipment and the charging source are electrically connected, so that power can be provided to the electrical equipment through the second interface 12; and charge can be supplied to the battery cell 2 through the second interface 12.
  • the third electrical connection can be The device 6 and the fourth electrical connector 7 are arranged on the same side or opposite sides of the battery pack;
  • the second interface 12 can be used for both discharging and charging.
  • the second interface 12 is a type-C interface
  • the first interface 10 is a pinhole terminal
  • the first interface 10 is used for Power supply for various hand-held power tools, such as cordless vacuum cleaners, DC air compressors and other garden tools, etc., and the use of pinhole terminals can effectively improve the waterproof and sealing effect of the battery pack, and it is more convenient to plug in; the battery of this embodiment
  • the package has a compact structure and can also be used as a mobile power supply. At this time, mobile devices such as mobile phones and tablets can be charged through the second interface 12 using the type-C interface, and the battery cell 2 of the battery pack can also be charged through the type-C interface. to charge.
  • the above-mentioned pinhole terminal at least includes positive and negative discharge holes, and further preferably, at least one signal hole for signal transmission connection with various hand-held power tools in the outside world.
  • the battery pack in this embodiment further includes a support frame 8, which is used to install the battery cell 2 and the circuit board 3.
  • the battery cell 2 adopts a single-section 21700 battery cell, and the support frame 8
  • the upper part is an arc-shaped groove for setting the battery core 2, and an insulating pad 15 is provided between the support frame 8 and the battery core 2; it can play the role of leakage protection, especially when the skin of the battery core 2 is damaged, Guaranteed that there will be no leakage.
  • the support frame 8 is provided with installation grooves 24 along the axial direction of the cell 2 , and limit plates 25 are respectively provided on both sides of the ends of the cell 2 .
  • the surfaces correspond to each other, and the length of the installation slot 24 is basically the same as the length of the cell; specifically, the side of the housing 1 opposite to the installation slot 24 is arc-shaped, and its arc-shaped surface is adapted to the outer surface of the cell 2, and the arc-shaped surface is
  • the mounting slot 24 and the limiting plate 25 are combined to form the positioning area of the battery cell 2; that is, the cavity formed by the mounting slot 24 on the housing 1 and the supporting frame 8, and the limiting plates 25 at both ends of the mounting slot 24, the cavity is formed.
  • the support frame 8 is respectively provided with a first bayonet 22 and a second bayonet 23 relative to the positive and negative poles of the battery cell 2;
  • the limiting plates 25 at both ends of the groove 24 are provided with positioning grooves 11 at the positions of the supporting skeleton 8 corresponding to the installation grooves 24 on the arc-shaped surface of the battery core, and the positioning grooves 11 are also provided with bumps 26.
  • the connector 4 and the second electrical connector 5 are respectively connected to the two ends of the battery core 2 at the first bayonet 22 and the second bayonet 23; and after bending and extending, they are connected to the circuit board 3 through the support frame 8, and are bent and extended.
  • the segment is positioned in the positioning groove 11 , and the bending extension is also provided with a fixing hole, and the positioning of the first electrical connector 4 and the second electrical connector 5 is realized through the cooperation of the fixing hole and the bump 26 .
  • the first interface 10 and/or the second interface 12 extend outward along the axis of the positive and negative electrodes of the battery cell 2 ; the second interface 12 extends outward along the axis of the positive and negative electrodes of the battery cell 2
  • the insertion direction of the first interface 10 and the second interface 12 is set along the direction of the longest side of the battery pack, which is more convenient to use.
  • the casing 1 is provided with a second opening 19 corresponding to the second interface 12 ; the casing 1 is provided with a first opening 18 corresponding to the first interface 10 ; and the second interface 12 It is arranged side by side with the first interface 10 at the same end of the battery pack, that is, through the setting of the first interface 10 and the second interface 12, the problem of the multi-functional application of the battery pack in this embodiment is realized at the same time, and the overall structure is compact and easy to use. It's simple and convenient.
  • the fourth electrical connector 7 slightly protrudes from the third electrical connector 7.
  • the installation gaps between the electrical connector 6, the third electrical connector 6, the fourth electrical connector 7 and the support frame 8 are sealed by a waterproof gasket 9, and the waterproof gasket 9 is provided with the third electrical connector 6,
  • the slot corresponding to the fourth electrical connector 7, the waterproof gasket 9 is sleeved on the fourth electrical connector 7, and the waterproof gasket 9 is slightly squeezed and deformed between the support frame 8 and the housing 1, and the installation
  • the gap is completely sealed, and at the same time, it is completely in close contact with the side walls of the third electrical connector 6 and the fourth electrical connector 7 to further ensure the sealing effect, and at the same time, the fourth electrical connector 7 has a corresponding positioning and installation effect.
  • the battery pack in this embodiment is powered by the battery cell 2, and uses a single 21700 battery cell.
  • the suitable power tools are not limited to cordless hand-held power tools, but also garden tools, cordless vacuum cleaners, and DC air compressors.
  • first electrical connector 4 and the second electrical connector 5 at least include a longitudinal bending section extending along the axis of the positive and negative electrodes of the battery cell 2, that is, the first electrical connector 4 and the second electrical connection are bent at a right angle.
  • the device 5 is used to connect the positive and negative electrodes of the battery cell and the circuit board 3 respectively.
  • two protruding support blocks 16 are respectively provided on both sides of the bottom of the support frame 8; 8.
  • the width of the circuit board 3 is Y
  • the diameter of the cell 2 is D
  • the width Y is 95% or less of the width D; in this embodiment, the width Y of the circuit board 3 is 20mm, and the diameter D of the cell 2 is 21mm.
  • both ends of the circuit board 3 in the length direction are respectively close to the positive and negative ends of the battery cell 2, and the two ends of the circuit board 3 do not exceed the positive and negative ends of the battery core 2.
  • the length of the cell 2 is L3, the length of the battery pack is L4, and L4 is 1.3 times or less of L3; the cell diameter is D, the height of the battery pack is M, and M is 1.8 of D times or less; in this embodiment, the length of the battery cell 2 is 70mm, the length of the battery pack is 82mm; the diameter of the battery cell is 21mm, and the height of the battery pack is 36mm; the above-mentioned structure can effectively ensure the battery of this embodiment.
  • the structure of the bag is compact, and when used as a mobile power supply, it is easy to carry, and can be applied to various small electric tools at the same time.
  • At least two first ports 10 are further provided on the battery pack.
  • the first ports 10 are electrically connected to the circuit board 3 through the third electrical connector 6 , and the first ports 10 can be used
  • the power of the battery cell 2 can be provided to the electrical equipment through the first interface 10;
  • the first interfaces 10 are respectively arranged at both ends of the battery pack; wherein the two first interfaces 10 respectively include a pinhole terminal and a USB interface, the setting of the pinhole terminal is the same as that in Embodiment 1, and the USB interface is set On the side opposite the pinhole terminals on the battery pack.
  • the setting of the USB interface further improves the scope of application of the battery pack in this embodiment when used as a mobile power source.
  • the casing 1 includes a first casing 20 for accommodating the battery cell 2 , and at least one second casing 21 , and the second casing 21 is disposed on the battery core 2 .
  • positive and/or negative terminals, and the first casing 20 and the second casing 21 form a closed cavity for accommodating the battery cell 2; specifically, as shown in FIG. 3, in this embodiment, the first casing
  • the body 20 and the second shell 21 respectively have one and only one, the second shell 21 is arranged at the positive or negative end of the battery cell 2, and there is a curved and closed between the first shell 20 and the second shell 21.
  • the separation edge is located in the same plane; and the plane where the separation edge is located is parallel to the plane where the positive electrode and the negative electrode of the cell 2 are located, that is, the edge of the second shell 21 is the separation edge that cooperates with the first shell 20, and the second The plane where the casing 21 is located is perpendicular to the axis direction of the positive and negative electrodes of the battery cell 2, and the first casing 20 is barrel-shaped;
  • the casing 20 has an integrated structure, and the second casing 21 is embedded and fixed at the end of the first casing 20 . Specifically, the first casing 20 and the second casing 21 are fitted with each other through a snap-fit structure.
  • the separation edge of the first shell 20 and the second shell 21 is located at the outer end face of the shell 1; the structural side wall of the shell 1 in this embodiment has no visible separation edge, which reflects an integrated design. , it feels better to hold when used as a power bank.
  • first casing 20 and the second casing 21 are sealed and connected by ultrasonic welding, which further improves the overall sealing performance.
  • Embodiment 3 Compared with Embodiment 3, in this embodiment, there is one and only one first casing 20 , two second casings 21 , and the second casing 21 is fixed to the first casing by sealing connection.
  • the opposite ends of the body 20 that is, the first shell 20 is a barrel with two transparent ends, and the two second shells 21 are of the same shape and size, and are sealed and fixed with the two ends of the first shell 20 respectively, and are connected in a sealed manner.
  • the method is ultrasonic welding, which further improves the overall sealing.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne une structure de bloc-batterie se rapportant au domaine technique des blocs-batteries. La structure de bloc-batterie comprend un boîtier (1), et une cellule de batterie (2) et une carte de circuit imprimé (3) disposées à l'intérieur du boîtier (1). La structure de bloc-batterie comprend en outre un cadre de support (8), le cadre de support (8) étant utilisé pour le montage et le positionnement de la cellule de batterie (2) et de la carte de circuit imprimé (3), le cadre de support (8) étant pourvu d'un premier trou de serrage (22) et d'un second trou de serrage (23) correspondant respectivement aux électrodes positive et négative de la cellule de batterie (2) ; un premier connecteur électrique (4) disposé au niveau du premier trou de serrage (22), et connectant une extrémité des électrodes positive et négative de la cellule de batterie (2) à la carte de circuit imprimé (3) ; un deuxième connecteur électrique (5) disposé au niveau du second trou de serrage (23), et connectant l'autre extrémité des électrodes positive et négative de la cellule de batterie (2) à la carte de circuit imprimé (3) ; et un troisième connecteur électrique (6) disposé à une extrémité de la carte de circuit imprimé (3), le troisième connecteur électrique (6) étant configuré pour être connecté électriquement à un dispositif électrique. En adoptant une conception structurale compacte, la présente invention réduit considérablement le volume de l'ensemble du bloc-batterie, et permet une plus large plage d'applications du bloc-batterie.
PCT/CN2021/080110 2020-06-30 2021-03-11 Structure de bloc-batterie WO2022001168A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021255718.2 2020-06-30
CN202021255718.2U CN212659632U (zh) 2020-06-30 2020-06-30 一种电池包结构

Publications (1)

Publication Number Publication Date
WO2022001168A1 true WO2022001168A1 (fr) 2022-01-06

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Application Number Title Priority Date Filing Date
PCT/CN2021/080110 WO2022001168A1 (fr) 2020-06-30 2021-03-11 Structure de bloc-batterie

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CN (1) CN212659632U (fr)
WO (1) WO2022001168A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230005878A (ko) * 2020-06-30 2023-01-10 저지앙 레라 뉴 에너지 파워 테크놀로지 컴퍼니 리미티드 배터리 팩
CN212659632U (zh) * 2020-06-30 2021-03-05 浙江动一新能源动力科技股份有限公司 一种电池包结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140305602A1 (en) * 2013-04-15 2014-10-16 Lutron Electronics Co., Ltd. Integrated accessible battery compartment for motorized window treatment
CN207116564U (zh) * 2017-06-16 2018-03-16 深圳拓邦股份有限公司 一种导电装置以及电池包
CN207303253U (zh) * 2017-06-29 2018-05-01 吉安市优特利科技有限公司 锂离子电池
CN209312959U (zh) * 2018-12-20 2019-08-27 深圳市量能科技有限公司 一种电池ntc热敏电阻固定结构
CN111261950A (zh) * 2020-02-04 2020-06-09 张运杰 一种可复用的充电式锂电池
CN212659632U (zh) * 2020-06-30 2021-03-05 浙江动一新能源动力科技股份有限公司 一种电池包结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140305602A1 (en) * 2013-04-15 2014-10-16 Lutron Electronics Co., Ltd. Integrated accessible battery compartment for motorized window treatment
CN207116564U (zh) * 2017-06-16 2018-03-16 深圳拓邦股份有限公司 一种导电装置以及电池包
CN207303253U (zh) * 2017-06-29 2018-05-01 吉安市优特利科技有限公司 锂离子电池
CN209312959U (zh) * 2018-12-20 2019-08-27 深圳市量能科技有限公司 一种电池ntc热敏电阻固定结构
CN111261950A (zh) * 2020-02-04 2020-06-09 张运杰 一种可复用的充电式锂电池
CN212659632U (zh) * 2020-06-30 2021-03-05 浙江动一新能源动力科技股份有限公司 一种电池包结构

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